Radio Test Set
IFR 2975
Maintenance Manual
1002-4250-4P0
Issue-3
MAINTENANCE MANUAL
RADIO TEST SET
IFR 2975
PUBLISHED BY
Aeroflex
COPYRIGHT © Aeroflex 2006
All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or
transmitted in any form or by any means, electronic, mechanical, photocopying, recording or
otherwise without the prior permission of the publisher.
Original Printing
Jul 2004
Issue-2
Apr 2005
Issue-3
Jul 2006
10200 West York / Wichita, Kansas 67215 U.S.A. / (316) 522-4981 / FAX (316) 524-2623
WARNING:
HIGH VOLTAGE EQUIPMENT
THIS EQUIPMENT CONTAINS CERTAIN CIRCUITS AND/OR
COMPONENTS OF EXTREMELY HIGH VOLTAGE POTENTIALS,
CAPABLE OF CAUSING SERIOUS BODILY INJURY OR DEATH. WHEN
PERFORMING ANY OF THE PROCEDURES CONTAINED IN THIS
MANUAL, HEED ALL APPLICABLE SAFETY PRECAUTIONS.
SAFETY FIRST: TO ALL SERVICE PERSO NNEL
REFER ALL SERVICING OF UNIT TO QUALIFIED TECHNICAL PERSONNEL.
CASE, COVER OR PANEL REMOVAL
Removing protective covers, casings or panels from this unit exposes the technician to electrical hazards that
can result in electrical shock or equipment damage.
SAFETY IDENTIFICATION IN TECHNICAL MANUAL
This manual uses the following terms to draw attention to possible safety hazards, that may exist when
operating or servicing this equipment.
CAUTION:
THIS TERM IDENTIFIES CONDITIONS OR ACTIVITIES THAT, IF IGNORED, CAN RESULT IN
EQUIPMENT OR PROPERTY DAMAGE (e.g., FIRE).
WARNING: THIS TERM IDENTIFIES CONDITIONS OR ACTIVITIES THAT, IF IGNORED, CAN RESULT IN
PERSONAL INJURY OR DEATH.
SAFETY SYMBOLS IN MANUALS AND ON UNITS
CAUTION: Refer to accompanying documents.
AC TERMINAL: Terminal that may supply or be supplied with ac or alternating voltage.
SWITCH OFF: AC line power to the device is OFF.
SWITCH ON: AC line power to the device is ON.
DANGEROUS VOLTAGE: Indicates electrical shock hazard due to high voltage levels.
EQUIPMENT GROUNDING PRECAUTION
Improper grounding of equipment can result in electrical shock.
USE OF PROBES
Check the specifications for the maximum voltage, current and power ratings of any connector on the unit
before connecting it with a probe from a terminal device. Be sure the terminal device performs within these
specifications before using it for measurement, to prevent electrical shock or damage to the equipment.
POWER CORDS
Power cords must not be frayed or broken nor expose bare wiring when operating this equipment.
USE RECOMMENDED FUSES ONLY
Use only fuses specifically recommended for the equipment at the specified current and voltage ratings.
CAUTION:
INTEGRATED CIRCUITS AND SOLID STATE DEVICES SUCH AS MOS FETS, ESPECIALLY CMOS
TYPES, ARE SUSCEPTIBLE TO DAMAGE BY ELECTROSTATIC DISCHARGES RECEIVED FROM
IMPROPER HANDLING, THE USE OF UNGROUNDED TOOLS AND IMPROPER STORAGE AND
PACKAGING. ANY MAINTENANCE TO THIS UNIT MUST BE PERFORMED WITH THE FOLLOWING
PRECAUTIONS:
O
BEFORE USE IN A CIRCUIT, KEEP ALL LEADS SHORTED TOGETHER EITHER BY THE USE OF
VENDOR-SUPPLIED SHORTING SPRINGS OR BY INSERTING LEADS INTO A CONDUCTIVE
MATERIAL.
O
WHEN REMOVING DEVICES FROM THEIR CONTAINERS, GROUND THE HAND BEING USED
WITH A CONDUCTIVE WRISTBAND.
O
TIPS OF SOLDERING IRONS AND/OR ANY TOOLS USED MUST BE GROUNDED.
O
DEVICES MUST NEVER BE INSERTED INTO NOR REMOVED FROM CIRCUITS WITH POWER
ON.
O
PC BOARDS, WHEN TAKEN OUT OF THE SET, MUST BE LAID ON A GROUNDED CONDUCTIVE
MAT OR STORED IN A CONDUCTIVE STORAGE BAG. REMOVE ANY BUILT-IN POWER
SOURCE, SUCH AS A BATTERY, BEFORE LAYING PC BOARDS ON A CONDUCTIVE MAT OR
STORING IN A CONDUCTIVE BAG.
O
PC BOARDS, IF BEING SHIPPED TO THE FACTORY FOR REPAIR, MUST BE PACKAGED IN A
CONDUCTIVE BAG AND PLACED IN A WELL-CUSHIONED SHIPPING CONTAINER.
CAUTION
THIS EQUIPMENT CONTAINS PARTS
SENSITIVE TO DAMAGE
BY ELECTROSTATIC DISCHARGE (ESD)
CAUTION:
SIGNAL GENERATORS CAN BE A SOURCE OF ELECTROMAGNETIC INTERFERENCE (EMI) TO
COMMUNICATION RECEIVERS. SOME TRANSMITTED SIGNALS CAN CAUSE DISRUPTION AND
INTERFERENCE TO COMMUNICATION SERVICES OUT TO A DISTANCE OF SEVERAL MILES.
USERS OF THIS EQUIPMENT SHOULD SCRUTINIZE ANY OPERATION THAT RESULTS IN
RADIATION OF A SIGNAL (DIRECTLY OR INDIRECTLY) AND SHOULD TAKE NECESSARY
PRECAUTIONS TO AVOID POTENTIAL COMMUNICATION INTERFERENCE PROBLEMS.
CAUTION:
KEEP ALL VENT OPENINGS CLEAR AND UNOBSTRUCTED FOR PROPER EQUIPMENT COOLING
AND CONTINUED RELIABILITY. DO NOT OPERATE EQUIPMENT IN THE VERTICAL POSITION ON
PLUSH CARPET OR UPHOLSTERY TO AVOID IMPAIRING THE AIR EXHAUST. WHEN OPERATING
THE TEST SET IN THE NORMAL HORIZONTAL OR TILT BAIL POSITION, MAINTAIN AT LEAST
1.6 INCHES (FOUR CENTIMETERS) OF CLEARANCE BETWEEN THE EQUIPMENT REAR EXHAUST
FAN SCREEN AND OBJECTS OR WALLS.
PREFACE
SCO PE
T h i s m a n u a l co n t a i n s m a i n t e n a n c e i n s t r u ct i o n s f o r t h e 2 9 7 5 . T h e i n f o r m a t i o n i n t h i s m a n u a l e n a b l e s
se r vi ci n g t e ch n i c i a n s t o :
O
S e r v i c e , t e s t o r r e p l a c e a n y m a j o r a sse m b l y w i t h i n t h e 2 9 7 5 .
O
Maintain operating conditions of the 2975 to the expected performance standards.
O
Understand principles of operation, relating to the overall operation of the 2975 as well as
functional operation within the major assemblies.
ORGANIZATION
T h e 2 9 7 5 M a i n t e n a n c e M a n u a l i s c o m p o se d o f t h e f o l l o w i n g s e c t i o n s :
SECTION 1 - THEORY OF OPERATION
D e scr i b e s h o w t h e 2 9 7 5 o p e r a t e s o n t h r e e l e v e l s o f c o m p l e x i t y : syst e m l e ve l , f u n ct i o n a l l e ve l
a n d f u n ct i o n a l l y a t a m o d u l e ( a s s e m b l y ) l e v e l .
SECTION 2 - CALIBRATION/VERIFICATION
Provides the step by step procedures for calibrating and verifying the performance of the
2975.
SECTION 3 - REPLACEMENT PROCEDURES
P r o vi d e s s t e p b y s t e p p r o c e d u r e s f o r r e m o v i n g a n d i n s t a l l i n g m a j o r a s s e m b l i e s w i t h i n t h e
2975.
SECTION 4 - PARTS LIST
Provides part lists and diagrams for ordering replaceable parts within the 2975.
SECTION 5 - ASSEMBLIES
Contains the 2975 system interconnect diagram and diagrams of all major assemblies.
i
TABLE OF CONTENTS
PARAGRAPH
TITLE
PAGE
SECTIO N 1 - THEO RY O F O PERATIO N
1-1
General ................................................................................................
1-1
1-2
System Overview ...................................................................................
1-1
1-3
M o d u l e O ve r vi e w . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1-5
1-3-1
Backplane PCB Assy (42A1A1A1) ......................................................
1-13
1-3-2
Front Panel Audio PCB Assy (42A1A1A2) ...........................................
1-14
1-3-3
CPU Adapter Assy (42A1A1A5) ..........................................................
1-15
1-3-4
Power Supply Assy (42A1A1A6) .........................................................
1-16
1-3-5
Power Termination Assy (42A1A1A7) ..................................................
1-17
1-3-6
Disk I/O PCB Assy (42A1A1A9) ..........................................................
1-20
1-3-7
Attenuator Assy (42A1A3) .................................................................
1-21
1-3-8
Generator Assy (42A1A4) ..................................................................
1-22
1-3-9
IF/Video PCB Assy (42A1A5) .............................................................
1-23
1-3-10
Multifunction I/O PCB Assy (42A1A6) .................................................
1-24
1-3-11
Receiver Assy (42A1A7) ...................................................................
1-25
1-3-12
CAI PCB Assy (42A1A8) ....................................................................
1-26
SECTION 2 - CALIBRATION
2-1
General ................................................................................................
2-1
2-1-1
C a l i b r a t i o n / V e r i f i c a t i o n S ch e d u l e . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2-1
2-1-2
C o n t r o l s a n d C o n n e ct o r s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2-1
2-1-3
Test Equipment Requirements ...........................................................
2-1
2-1-4
Test Record.....................................................................................
2-1
Precautions ..........................................................................................
2-2
2-2-1
Safety .............................................................................................
2-2
2-2-2
ESD................................................................................................
2-2
2-3
Disassembly Requirements .....................................................................
2-2
2-4
Verification Procedures ..........................................................................
2-3
2-4-1
Initial Setup ....................................................................................
2-3
2-4-2
G e n e r a t o r O u t p u t F r e q u e n cy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2-4
2-4-3
Generator Output Power ...................................................................
2-5
2-4-4
G e n e r a t o r L e v e l F l a t n e ss . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2-6
2-4-5
G e n e r a t o r T / R P o w e r L e ve l A ccu r a cy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2-7
2-2
ii
TABLE OF CONTENTS (cont)
PARAGRAPH
TITLE
PAGE
SECTION 2 - CALIBRATION (cont)
2-4-6
G e n e r a t o r T / R P o w e r L e ve l F l a t n e ss . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2-8
2-4-7
R F P o w e r M e t e r A ccu r a cy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2-9
2-4-8
R S S I M e t e r A ccu r a cy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2-10
2-4-9
A n a l y z e r L e v e l A c c u r a cy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2-11
2-4-10
Generator FM Residual .....................................................................
2-13
2-4-11
Generator AM Residual .....................................................................
2-14
2-4-12
G e n e r a t o r F M D e v i a t i o n A ccu r a cy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2-15
2-4-13
Generator FM Modulation Rate ..........................................................
2-16
2-4-14
G e n e r a t o r F M M o d u l a t i o n D i st o r t i o n . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2-17
2-4-15
G e n e r a t o r A M M o d u l a t i o n A ccu r a cy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2-18
2-4-16
R F E r r o r M e t e r A ccu r a cy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2-19
2-4-17
AF Meter Accuracy ...........................................................................
2-20
2-4-18
F M D e v i a t i o n M e t e r A ccu r a cy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2-21
2-4-19
A M M o d u l a t i o n M e t e r A ccu r a cy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2-22
2-4-20
A n a l y z e r F r e q u e n c y a n d S p a n A ccu r a cy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2-23
2-4-21
A n a l y z e r B a n d w i d t h S w i t ch i n g E r r o r . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2-24
2-4-22
O s c i l l o s c o p e A m p l i t u d e A ccu r a cy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2-25
2-4-23
D i g i t a l V o l t m e t e r D C A ccu r a cy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2-27
2-4-24
D i g i t a l V o l t m e t e r A C A ccu r a cy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2-28
2-4-25
F u n c t i o n G e n e r a t o r L e ve l A ccu r a cy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2-29
2-4-26
F u n c t i o n G e n e r a t o r F r e q u e n cy A ccu r a cy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2-30
2-4-27
F u n c t i o n G e n e r a t o r T o t a l H a r m o n i c D i st o r t i o n . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2-31
2-4-28
A F C o u n t e r A c c u r a cy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2-32
2-4-29
S I N A D / D i s t o r t i o n M e t e r A ccu r a cy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2-33
2-5
Verification Data Sheet ..........................................................................
2-34
2-6
Calibration Procedures ..........................................................................
2-41
2-6-1
Power Supply Voltages .....................................................................
2-41
2-6-2
Generator / Analyzer / TCXO .............................................................
2-44
Calibration Data Sheet ...........................................................................
2-46
2-7
iii
TABLE OF CONTENTS (cont)
PARAGRAPH
TITLE
PAGE
SECT IO N 3 - REPLACEMENT PRO CEDURES
3-1
General ................................................................................................
3-1
3-1-1
S a f e t y P r e ca u t i o n s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3-1
3-1-2
ESD Precautions ..............................................................................
3-1
3-2
Tool Requirements ................................................................................
3-1
3-3
Replacement Procedures........................................................................
3-2
3-3-1
Remove Case Assy ...........................................................................
3-3
3-3-2
Replace Handle ...............................................................................
3-4
3-3-3
R e p l a ce A t t e n u a t o r A ssy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3-5
3-3-4
R e p l a ce G e n e r a t o r A ssy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3-6
3-3-5
R e p l a ce R e ce i ve r A ssy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3-7
3-3-6
R e p l a c e I F / V i d e o P C B A ssy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3-8
3-3-7
R e p l a ce M u l t i f u n ct i o n I / O P C B A ssy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3-9
3-3-8
R e p l a c e C A I P C B A ssy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3-10
3-3-9
R e p l a c e C P U A d a p t e r A ssy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3-11
3-3-10
R e p l a c e R e a r P a n e l A ssy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3-12
3-3-11
R e p l a c e R e a r P a n e l P C B A ssy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3-13
3-3-12
R e p l a c e P o w e r S u p p l y A ssy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3-16
3-3-13
Replace Disk I/O Assy ......................................................................
3-19
3-3-14
R e p l a c e F r o n t P a n e l A ssy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3-20
3-3-15
R e p l a c e F r o n t P a n e l A u d i o P C B A ssy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3-23
3-3-16
R e p l a c e P o w e r T e r m i n a t i o n A ssy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3-24
3-3-17
R e p l a c e F l o p p y D r i ve A ssy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3-26
3-3-18
R e p l a ce B a ckp l a n e P C B A ssy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3-27
SECTIO N 4 - PARTS LIST
4-1
General ...............................................................................................
4-1
4-2
Parts Lists ...........................................................................................
4-2
4-2-1
Accessories .....................................................................................
4-2
4-2-2
Composite Assy ...............................................................................
4-3
4-2-3
Chassis Assy ...................................................................................
4-4
4-2-4
CPU Adapter Assy ............................................................................
4-5
iv
TABLE OF CONTENTS (cont)
PARAGRAPH
TITLE
PAGE
SECTIO N 5 - ASSEMBLIES
APPENDIX A - I/O CONNECTORS AND PIN-OUT TABLES
A-1
Table of I/O Connectors .........................................................................
A-1
A-2
P i n - O u t T a b l e f o r M I C C o n n e ct o r . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
A-2
A-3
P i n - O u t T a b l e f o r A U D I O I / O C o n n e ct o r . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
A-3
A-4
Pin-Out Table for GPIB Connector ...........................................................
A-4
A-5
P i n - O u t T a b l e f o r R S - 2 3 2 C o n n e ct o r . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
A-5
A-6
Pin-Out Table for PRINTER Connector .....................................................
A-6
A-7
Pin-Out Table for TEST PORT Connector .................................................
A-7
A-8
Pin-Out Table for VGA Connector ............................................................
A-8
A-9
Pin-Out Table for MOUSE Connector .......................................................
A-9
A-10
P i n - O u t T a b l e f o r K E Y B O A R D C o n n e ct o r . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
A-10
A-11
P i n - O u t T a b l e f o r U S B C o n n e ct o r . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
A-11
A-12
P i n - O u t T a b l e f o r E T H E R N E T C o n n e ct o r . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
A-12
APPENDIX B - REPACKING FO R SHIPMENT
B-1
Shipping Information .............................................................................
B-1
B-1-1
Authorization ...................................................................................
B-1
B-1-2
Tagging Test Sets ............................................................................
B-1
B-1-3
Shipping Containers .........................................................................
B-1
B-1-4
Freight Costs ...................................................................................
B-1
Repacking Procedure .............................................................................
B-1
B-2
APPENDIX C - CONTRO LS AND CONNECTORS
C-1
Controls ...............................................................................................
C-1
C-2
Connectors ...........................................................................................
C-3
C-2-1
2975 Front Panel .............................................................................
C-3
C-2-2
2975 Rear Panel ..............................................................................
C-5
APPENDIX D - SPECIFICATIO NS
v
TABLE OF CONTENTS (cont)
PARAGRAPH
TITLE
PAGE
APPENDIX E - TEST EQ UIPMENT REQ UIREMENTS
E-1
General ................................................................................................
E-1
E-2
Recommended Test Equipment ...............................................................
E-1
APPENDIX F - ETHERNET CROSSOVER CABLE
vi
LIST OF ILLUSTRATIONS
FIGURE NO.
TITLE
PAGE
1-1
2975 System Overview ...........................................................................
1-3
1-2
2975 Module Overview ...........................................................................
1-7
1-3
Front Panel Audio PCB Assy Block Diagram .............................................
1-14
1-4
Power Supply Assy Block Diagram ..........................................................
1-16
1-5
Power Termination Assy Block Diagram ...................................................
1-18
1-6
Disk I/O PCB Assy Block Diagram ...........................................................
1-20
1-7
Attenuator Assy Block Diagram ...............................................................
1-21
1-8
Multifunction I/O Assy Block Diagram ......................................................
1-24
1-9
CAI PCB Assy Block Diagram..................................................................
1-26
2-1
Power Supply Voltages ..........................................................................
2-43
2-2
Calibration Test Equipment Configuration ................................................
2-47
2-3
Generator Calibration Setup ...................................................................
2-48
2-4
Analyzer Calibration Setup .....................................................................
2-49
2-5
TCXO Calibration Setup .........................................................................
2-50
4-1
Accessory Kit Contents ..........................................................................
4-3
4-2
2975 Composite Assy ............................................................................
4-9
4-3
2975 Chassis Assy ................................................................................
4-11
4-4
CPU Adapter Assy .................................................................................
4-12
5-1
2 9 7 5 S y s t e m I n t e r c o n n e ct . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-3
5-2
Chassis Assy ........................................................................................
5-4
5-3
Backplane PCB Assy .............................................................................
5-5
5-4
F r o n t P a n e l A u d i o P C B A ssy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-10
5-5
Rear Panel PCB Assy ............................................................................
5-11
5-6
Front Panel Assy ...................................................................................
5-12
5-7
CPU Adapter Assy .................................................................................
5-13
5-8
Power Supply Assy ................................................................................
5-14
5-9
Power Termination Assy .........................................................................
5-15
5-10
F l o p p y D r i ve A ssy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-16
5-11
D i sk I / O P C B A ssy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-17
5-12
Rear Panel Assy ...................................................................................
5-18
5-13
Attenuator Assy ....................................................................................
5-19
5-14
Generator Assy .....................................................................................
5-20
5-15
IF/Video PCB Assy ................................................................................
5-21
vi i
LIST OF ILLUSTRATIONS (cont)
FIGURE NO.
TITLE
PAGE
5-16
M u l t i f u n c t i o n I / O P C B A ssy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-22
5-17
Receiver Assy .......................................................................................
5-23
5-18
C A I P C B A ssy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-24
5-19
Handle Assy .........................................................................................
5-25
B-1
Repacking for Shipment .........................................................................
B-2
viii
SECTION 1 - THEORY OF OPERATION
1-1
GENERAL
T h e 2 9 7 5 d i g i t a l r a d i o t e s t p l a t f o r m i n t e g r a t e s o v e r 2 0 r a d i o - t e s t i n g i n s t r u m e n t s i n t o a s i n g l e u se r f r i e n d l y i n s t r u m e n t t h a t o f f e r s t h e i n t e r c o n n e ct i vi t y n o r m a l l y e xp e ct e d f r o m a p e r so n a l co m p u t e r .
The 2975 digital test platform, created with modular design, is simple to support and upgrade. The
2975 provides comprehensive transmitter and receiver testing, while the full-range spectrum analyzer
a n d t r a cki n g g e n e r a t o r m a k e p o s s i b l e b a s e s i t e c o m p o n e n t t e s t i n g . T h e d u a l c h a n n e l o s c i l l o sco p e
and internal DEMOD scope provide comprehensive viewing of signals.
T h i s f o l l o w i n g s e c t i o n s , S y s t e m O v e r v i e w a n d M o d u l e O v e r v i e w , p r o v i d e t h e m a i n t e n a n c e t e ch n i ci a n
w i t h a co n ce p t o f h o w t h e 2 9 7 5 o p e r a t e s .
1-2
SYSTEM OVERVIEW
RECEIVE SYSTEM OVERVIEW
T h e 2 9 7 5 i s ca p a b l e o f r e c e i v i n g m o d u l a t e d o r u n m o d u l a t e d s i g n a l s r a n g i n g f o r m 1 M H z t o 2 . 7 G H z.
S i g n a l s a r e r e c e i v e d t h r o u g h t h e P o w e r T e r m i n a t i o n A s s y a t t h e A N T C o n n e c t o r ( l o w p o w e r si g n a l s,
< - 1 0 d B m ) o r T / R C o n n e c t o r ( h i g h p o w e r si g n a l s, > - 1 0 t o + 5 0 d B m ) . A d i o d e d e t e ct o r se r ve s t o
m e a s u r e R F p o w e r a p p l i e d t o t h e T / R C o n n e ct o r . T h e A N T C o n n e ct o r a n d G E N C o n n e ct o r a r e
p r o t e c t e d f r o m h i g h p o w e r l e v e l s b y a l i m i t e r c i r c u i t . R e f e r t o t h e G e n e r a t e S yst e m O ve r vi e w f o r
m o r e d e t a i l s o n t h e G E N C o n n e c t o r . T h e R F s i g n a l i s r o u t e d t o t h e R e c e i v e r A ssy.
The Receiver Assy has selectable attenuators and provides reference signals of 10, 40, 80 and
4 0 0 M H z t o t h e s y s t e m . E x t e r n a l 1 0 M H z I / O i s r o u t e d f r o m t h e R e c e i ve r A s s y t o t h e R e a r P a n e l
Assy. In the Receiver Assy, the incoming signal is converted to an IF (immediate frequency) of
10.7 MHz and signal conditioning is started. The 10.7 MHz IF signal is passed on to the Video/IF
PCB Assy.
The IF/Video PCB Assy has selectable 10.7 MHz IF filtering of 30 kHz, 300 kHz and 6 MHz. Both the
C A I ( C o m m o n A i r I n t e r f a c e ) P C B A s s y a n d t h e I F / V i d e o P C B A s s y w o r k t o g e t h e r t o p r o vi d e t h e A G C
( a u t o m a t i c g a i n c o n t r o l ) f o r t h e R e c e i v e r A s s y . T h e C A I P C B A s s y se n d s d a t a t o t h e I F / V i d e o P C B
A s s y t o i n c r e a s e o r d e c r e a s e t h e g a i n a u t o m a t i ca l l y, p r o vi d i n g t h e c o r r e c t l e v e l t o t h e C A I P C B A s s y .
The IF/Video PCB Assy also is responsible for Analyzer resolution bandwidth filters in the “Look and
L i st e n ” m o d e o f 3 0 0 H z , 3 k H z a n d 6 0 k H z . W h e n t h e d e d i c a t e d A n a l y z e r m o d e i s s e l e c t e d , a l l
co m b i n a t i o n s o f I F f i l t e r i n g a r e u s e d t o p r o v i d e a f u l l y f u n c t i o n a l S p e c t r u m A n a l y z e r . A d d i t i o n a l
f u n c t i o n s o f t h e I F / V i d e o P C B A s s y a r e : 1 0 . 7 M H z I F o u t p u t t o t h e R e a r P a n e l A ssy, V i d e o o u t p u t t o
t h e R e a r P a n e l A s s y a n d I F C o u n t t o t h e M u l t i f u n ct i o n P C B A ssy. T h e f i n a l d e st i n a t i o n o f t h e
1 0 . 7 M H z I F s i g n a l i s r o u t e d t o t h e C A I P C B A ssy.
T h e C A I P C B A s s y r e c e i v e s t h e 1 0 . 7 M H z I F s i g n a l a n d d i g i t a l l y p e r f o r m s t h e d e m o d u l a t i o n p r o ce ss.
D e m o d u l a t i o n t y p e s i n c l u d e F M , A M , P 2 5 a n d P 2 5 E n c r . D u r i n g t h e d e m o d u l a t i o n p r o c e s s , t h e si g n a l
i s m e a s u r e d f o r c o r r e c t p o w e r s t r e n g t h . I f t h e i n co m i n g p o w e r i s i n co r r e ct , d a t a i s p r o vi d e d b a ck t o
t h e I F / V i d e o P C B A s s y f o r A G C c o n t r o l a s p r e vi o u sl y d i s c u s s e d i n t h e I F / V i d e o P C B se ct i o n a b o ve .
T h e C A I P C B A s s y p r o v i d e s d i g i t a l l y d e m o d u l a t e d s i g n a l s t o t h e s y s t e m f o r m e t e r f u n ct i o n s s u c h a s:
R e c e i v e r L e v e l M e t e r , D e v i a t i o n M e t e r , C 4 F M M e t e r , D e m o d O u t p u t , I n t e r n a l D e m o d S co p e a n d
S p e a k e r . O t h e r C A I P C B A s s y f u n c t i o n s a r e d i s c u s s e d i n t h e G e n e r a t e S yst e m O ve r vi e w .
1-1
GENERATE SYSTEM OVERVIEW
T h e G e n e r a t e S y s t e m p a t h s t a r t s w i t h t h e C A I P C B A s s y . T h e C A I P C B A s s y d i g i t a l l y mo d u l a t e s a n
1 1 . 4 M H z I F si g n a l . T h e M o d u l a t i o n s o u r c e s a r e M 1 , M 2 , M i c a n d A u d i o . T h e M o d u l a t i o n t y p e s
include FM, AM, P25 and P25Encr.
P r i m a r i l y D i g i t a l a u d i o s o u r c e s b e g i n i n t h e M u l t i f u n c t i o n P C B A ssy a n d a r e t r a n sf e r r e d t o t h e C A I
P C B A s s y , h o w e ve r ; t h e C A I P C B A s s y p r o vi d e s P 2 5 a n d P 2 5 E n cr ( e n cr yp t e d ) d i g i t a l a u d i o so u r ce s.
T h e 1 1 . 4 M H z I F s i g n a l i s r o u t e d t o t h e G e n e r a t o r A ssy.
T h e G e n e r a t o r A s s y i s d e s i g n e d t o c o n v e r t t h e 1 1 . 4 M H z I F s i g n a l t o t h e d e s i r e d o u t p u t f r e q u e n cy
b e t w e e n 1 M H z t o 2 . 7 G H z . T h e v a r i a b l e a t t e n u a t o r i n t h e G e n e r a t o r A ssy p r o vi d e s 9 . 9 d B
a t t e n u a t i o n i n 0 . 1 d B s t e p s b e t w e e n t h e 1 0 d B st e p s o f t h e A t t e n u a t o r A ssy. T h e si g n a l i s a m p l i f i e d
t o a l e ve l h i g h e n o u g h t o o v e r c o m e t h e l o s s e s o f t h e A t t e n u a t o r A ssy a n d P o w e r T e r m i n a t i o n A ssy
and to meet the specified maximum output power level. The desired RF signal is then routed to the
Attenuator Assy.
The Attenuator Assy consists of six relay-attenuator sections and a driver board. One relaya t t e n u a t o r s e c t i o n i s 1 0 d B a n d t h e o t h e r f i ve r e l a y- a t t e n u a t o r se ct i o n s a r e 2 0 d B f o r a t o t a l
a t t e n u a t i o n o f 1 1 0 d B . A f t e r t h e A t t e n u a t o r A s s y , t h e R F s i g n a l g o e s t o t h e P o w e r T e r m i n a t i o n A ssy.
T h e R F s i g n a l c a n b e r o u t e d o u t t h e G E N C o n n e ct o r o r t h e T / R C o n n e ct o r i n t h e P o w e r T e r m i n a t i o n
A s s y . T h e G E N C o n n e c t o r p r o v i d e s a m a x i m u m o u t p u t s i g n a l o f + 1 0 d B m a n d t h e T / R C o n n e ct o r
p r o vi d e s a m a xi m u m o u t p u t si g n a l o f - 3 0 d B m o ve r t h e 1 M H z t o 2 . 7 G H z r a n g e .
1-2
Generator Assy
VAR
Atten
Shielded
Coaxial Cables
20 dB
Mixer
CAI PCB Assy
(Common Air Interface)
3411.7 MHz IF
20 dB
20 dB
Mixer
20 dB
Mixer
10 dB
11.4 MHz
Mixer
Harris Up
Convertor
Mixer
IF/Video PCB Assy
Mixer
40 MHz
3410.7 MHz IF
Ant Connector
Attenuation
Parametric
DSP
40 MHz
Layer 1
DSP
10.7 MHz IF
I
5.3 MHz
IF
300 Hz
3 kHz
60 kHz
Receiver Assy
ADC
Mixer
Q
10.7 MHz
Mixer
T/R Connector
I
I
30 kHz
300 kHz
6 MHz
LOG AMP
ADC
10 MHz
Front Panel
Keypad PCB
Assy
Q
Q
Harris
Down
Convertor
Digitized Audio In
Digitized Audio Out
10.7 MHz
ADC
IF Count
210.7 MHz IF
Gen Connector
External 10 MHz I/O
400 MHz
80 MHz
10 MHz
Power Termination
Assy
Track LO
90.7 MHz IF
Front Panel Assy
Q Out
DAC
I Out
DAC
DAC
610.7 MHz IF
I/O BUS
110 dB Step
Attenuator
20 dB
External 10 MHz I/O
10.7 MHz Out
Analyzer Video Out
I/O BUS
Programable
Resistor
Bal or
Unbal
Filter
ADC
Filter
ADC
DAC
O-Scope Channel 1
DAC
DVM
Loads
10 MHz
Dual
DAC
Ref
Control
Backlight
Control
3.5" Disk
Control
Audio
DAC
Audio
Volume
Control
Disk I/O PCB Assy
Electric or
Dynamic
DSP
DVM/Scope
Control
Signal
Conditioning
Voltage
Reg
FPGA
Signal
Conditioning
Mic In
Audio In +/-
RJ-11 and Test Connector
Tone or Data
Filter
Audio Out 2
Test Connector I/O
DSP
Signal
Conditioning
Bal or Unbal
Bal /1 or /10
DAC
Tone or
Data Filter
Audio Out 1
Front Panel Audio PCB Assy
Display and
Inverter Supply
Multifunction I/O PCB Assy
IF Count
Display Power Supply
Video
Hard Disk
Drive
CPU
CPU
ADAPTER
PCB ASSY
Parallel
GPIB
Battery
Sense
EXT
Keyboard
EXT
REF I/O
RS-232
SA IF
Power Supply
Interface
Ethernet
SA
Video
Power Supply
USB
Mouse
Battery Sense
+15 V
+5 V Digital
+5 V Analog
Ground
Power Entry
Fan
CPU and
CPU Adapter Assy
O-Scope Channel 2
Power
On / Off
VGA
Rear Panel Assy
Power Supply Assy
DVM
3.5" Disk Drive
Ribbon Cable
042M-037
Figure 1-1 2975 System Overview
1-3
T H I S P A G E I N T E N T I ON A L L Y L E F T B L A N K .
1- 4
1-3
MODULE OVERVIEW
Page
B a c kp l a n e P C B A s s y ( 4 2 A 1 A 1 A 1 ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 - 1 3
Front Panel Audio PCB Assy (42A1A1A2) ............................................ 1-14
CPU Adapter Assy (42A1A1A5) .......................................................... 1-15
Power Supply Assy (42A1A1A6) ......................................................... 1-16
Power Termination Assy (42A1A1A7) .................................................. 1-17
Disk I/O PCB Assy (42A1A1A9) .......................................................... 1-20
Attenuator Assy (42A1A3) .................................................................. 1-21
Generator Assy (42A1A4) .................................................................. 1-22
IF/Video PCB Assy (42A1A5) ............................................................. 1-23
Multifunction I/O PCB Assy (42A1A6) .................................................. 1-24
R e c e i ve r A s s y ( 4 2 A 1 A 7 ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 - 2 5
CAI PCB Assy (42A1A8) .................................................................... 1-26
1-5
T H I S P A G E I N T E N T I ON A L L Y L E F T B L A N K .
1-6
Receive Module
(Cal - Not
Used)
W9
210.7 MHz BPF
50 dB
Step
Atten
Power Termination
40 MHz - Not Used
LNA_BIAS
RXBIAS_IN
4.8 MHz
DDS
RXT/R_IN
ANT
A1A1A7J2
Divide
by 4
Input
Protect
Broadband
Power Detector
20 dB
125 W
Power
Pad
Temp
Detector
Ambient
Temp
TEMP-2
10 MHz
LPF
Step Loop
W6
15 MHz LPF
W4
200 MHz
3rd LO
Divide
by 8
12 Bit
A/D
670 MHz
Clean Loop
Osc
Divide
by N
Output
Protect
W10
180 to 185 MHz
Sythesizer
To Multifunction
I/O Assy
10 MHz
Input
TXT/R_IN
Cal On/Off
GENAMP_BIAS
Divide
by 2
Disk I/O
Internal
10MHz
TCXO
Internal
Open-Loop
Temp
Comp
X5
Mult
Freq
Cal
DAC
40 MHz - Not Used
80 MHz (to 16 MHz Channel Analyzer Sweep DDS)
80 MHz (to Receive 1st LO YIG)
80 MHz (to Generator Assy)
Frequency Distribution
EXTERNAL REF I/O
A1A2J11
Receive System
Hardware Gain
Cal
80 MHz
High
Power
Detector
Low
Power
Detector
20 dB
Splitter
TXOLDET_OUT
(TX Overload
Sense)
3200 MHz
2nd LO
YIG Crossfeed
to Tracking Generator
Sweep Circuit
To 110 dB Step Attentuator Output
GEN
A1A1A7J3
3410.7 MHz
1st LO
Null Ckt
YIG
Driver
TEMP-1
TXBIAS_IN
3410.7
MHz IF
10.7 MHz IF
(To IF/Video Block)
Snap Diode
Comb Ckt
RXOLDET_OUT
(RX Overload
Sense)
T/R
A1A1A7J1
3410.7 to
6110.7 MHz
YIG 1st LO
Wide-Span
Sweep
10.7 MHz IF
Divide
by 2
3rd LO - 200 MHz
X8
Mult
2nd LO - 3200 MHz
W8
W7
400 MHz (to Generator Assy)
10 MHz
CrossFeed
80 MHz
System
Clock
40 MHz (to Common Air Interface)
40 MHz (to Receive IF)
40 MHz (to Multifunction Board)
Divide
by 2
Divide
by 4
10 MHz (to Recieve 1st LO YIG Step Loop)
10 MHz (to Generator YIG)
042M-021
Figure 1-2 2975 Module Overview
1-7
IF/Video PCB Assy
DAC
12 Bit
14 MHz LPF
14 MHz LPF
7.5 MHz HPF
R_AMP-B_20 dB
BW=300 kHz
2 of 6 Poles
R_AMP-C_20 dB
R_AMP-A_20 dB
BW=30 kHz
6 Poles
BW=300 kHz
4 of 6 Poles
R_AMP-D_10 dB
Gates
TEMP
SENSOR
12 Bit
A/D
IF Count
Line Driver
A/D OUT
Line Driver
10.7 MHz IF Out
(to Rear Panel Assy)
W1
10.7 MHz IF Out
(to CAI PCB Assy)
W5
Line Driver
Video
W2
Log Gain/Offset
W4
Video Out
TOS
+6 dBm
10.7 MHz IF
(From Rec Block)
[-20 dBm
Top of Scale]
BW=60 kHz
2 of 6 Poles
7.5 MHz HPF
14 MHz LPF
Logarithmic
Amplifier
Line Driver
Video Filter
12 Bit
A/D
A_AMP-B_20dB
A/D OUT
A_AMP-C_20dB
A_AMP-D_10dB
40 MHz
DDS
[+7 dBm]
14 MHz LPF
DAC
12 Bit
BW=3 kHz
6 Poles
[-20 dBm]
14 MHz LPF
7 MHz LPF
BW=60 kHz
4 of 6 Poles
A_AMP-A_20 dB
BW=300 Hz
6 Poles
042M-022
Figure 1-2 2975 Module Overview (cont)
1-8
W6
Tracking Generator
Sweep Input from
YIG Crossfeed
4.8 MHz
DDS
3.4 to 6.2 GHz
YIG Osc
Divide
by 4
YIG
Driver
Generator Assy
80 MHz from
Reciever Assy
10MHz
LPF
W8
180 to 185 MHz
Synthesizer
Step Loop
Divide
by N
10 MHz
Input
Divide
by 8
W3
11.4 MHz IF
from CAI PCB Assy
- Track
Snap Diode
670MHz
Comb Ckt
Clean Loop
Osc
Generate System
Hardware
Gain Adjust
91.4MHz
IF
611.4
MHz IF
110 dB
Step
Attenuator
W10
Generate Output
to Power Termination
3411.4
MHz IF
520 MHz
BPF
400 MHz
from Receiver Assy
Divide
by 2
A=1/5
W7
2800 MHz
BPF
X7
Mult
Analog/
Digital
Control
Gen
Level
ADC
Gen
Level
DAC
042M-023
Figure 1-2 2975 Module Overview (cont)
1-9
Serial Buses and Latch Lines
from Disk I/O PCB Assy
Battery
Sense
A/D
Dual
DAC
4 kHz
Speech
Audio
LPF
Volume
Control
Low-Pass
Filter
SPEAKER
23 kHz
Data
LPF
Floppy Drive
DISK I/O PCB ASSY
GPIB
CONTROLLER
GPIB
A1A1W5J1
ROM
USB
A1A1A1J23
FAN ON/OFF
Hard Drive
RS-232, DB-9
A1A1A1J21
CPU
CPU
(PC104)/
SYSTEM
Interconnect
POWER ON/OFF
FITS BUS (Backplane)
Printer, DB-25
A1A1A1J21
VGA, HDB-15
A1A1A1J21
CPU ADAPTER ASSY
CPU
Temp
Sensor
PS2 Mouse
6 Pin MiniDIN
A1A1A1J22
LCD
Power/
Backlight
ON/OFF
+24 V
REG
TO
YIG
PS2 Keyboard
6 Pin MiniDIN
A1A1A1J22
EtherNet
RJ-45
A1A1A1J25
To
Display
042M-024
Figure 1-2 2975 Module Overview (cont)
1-10
I OUT
A1A2J9
W5
Q OUT
A1A2J10
10.7 MHz IF
from Receiver Assy
W3
SCOPE IN
CH 1
A1A1A4J1
DVM In
A1A1A4J3
REC Serial
Control
GEN Serial
Control
IF Serial
Control
EXT TRIGGER IN
A1A2J7
SCOPE IN
CH 2
A1A1A4J2
11.4 MHz IF
to Generator Assy
W12
I OUT
DAC
DAC
ADC
Digital Up
Converter
Digital Down
Converter
W11
W13
Q OUT
DAC
DVM
Scope/DVM
Control
ADC
ADC
Serial Buses and Latch Lines
to Front Panel Audio PCB Assy
10 MHz
FPGA
Layer 1 and
Vocoder DSP
40 MHz
I
Serial Buses and Latch Lines
to Disk I/O PCB Assy
SCOPE
DSP
10 MHz
Q
Parallel Bus
to Test Connector
(Front Panel Audio
PCB Assy)
40 MHz
40 MHz
40 MHz
Crystal
Osc
Select 10 MHz
Divide
by 4
CAI PCB ASSY
10 MHz
Parametric
DSP
40 MHz
Crystal
Osc
Select
Divide
by 4
10 MHz
On Board/
System Clk
Switch
10 MHz
MULTIFUNCTION I/O PCB ASSY
Audio
DSP
On Board/System Clk
Switch
FITS BUS (Backplane)
042M-025
Figure 1-2 2975 Module Overview (cont)
1-11
Serial Buses and
Latch Lines to
Multifunction I/O PCB Assy
LP FILTER
and AMP
Divider and
Balanced/
Unbal
Select
FGEN OUT
FGEN/DEMOD
RJ-45 Connector
A1A1A2J3
Dual
DAC
DEMOD OUT
LP FILTER
& AMP
ADC
AMP &
LP Filter
Direct/
Balanced/
Unbalanced
Select
SINAD IN
MIC/SINAD
RJ-45 Connector
A1A1A2J3
ADC
AMP and
LP Filter
MIC
Bias
Select
Parallel Bus
from Multifunction I/O PCB Assy
MIC IN
Prog
Voltage
Ref
Vout
TEST Connector
A1A1A2J2
Front Panel Audio PCB Assy
042M-026
Figure 1-2 2975 Module Overview (cont)
1-12
1- 3- 1
BACKPL ANE PCB ASSY ( 42A1A1A1)
Refer to Figure 1-2.
T h e B a c k p l a n e P C B A s s y p r o v i d e s t h e m e c h a n i s m t h a t r o u t e s e l e c t r i c a l s i g n a l s b e t w e e n t h e va r i o u s
system assemblies:
3 2 - P i n C o n n e c t o r p r o v i d e s c o n n e ct i o n t o t h e P o w e r T e r m i n a t i o n A ssy
1 0 P i n H e a d e r p r o v i d e s r i b b o n c a b l e c o n n e c t i o n t o t h e F r o n t P a n e l A ssy
1 0 P i n H e a d e r p r o v i d e s r i b b o n c a b l e c o n n e c t i o n t o t h e A t t e n u a t o r A ssy
24 Pin Header provides ribbon cable connection to the GPIB Connector
40 Pin Header provides ribbon cable connection to the CRYPTION Connector
4 4 P i n H e a d e r p r o v i d e s c o n n e c t i o n t o t h e F r o n t P a n e l A u d i o P C B A ssy
48 Pin DIN Connectors for:
Disk I/O PCB Assy
Rear Panel PCB Assy
IF/Video PCB Assy
Generator Assy
Receiver Assy
96 Pin DIN Connectors for:
Power Supply Assy
CAI PCB Assy
CPU Adapter Assy (3)
Multifunction IO PCB Assy (3)
T h e B a c k p l a n e P C B A s s y l a y o u t u t i l i ze s R F t e c h n i q u e s o n a l l s i g n a l s > 3 3 M H z a n d o n a l l l o w l e ve l
si g n a l s.
1-13
1- 3- 2
FRO NT PANEL AUDIO PCB ASSY ( 42A1A1A2)
Refer to Figures 1-2 and 1-3.
T h e F r o n t P a n e l A u d i o P C B A s s y p l u g s i n t o t h e B a ckp l a n e P C B A ssy a n d s u p p o r t s t h e R J - 1 1 a n d T e st
C o n n e c t o r o f t h e 2 9 7 5 F r o n t P a n e l . T h e F r o n t P a n e l A u d i o P C B A ssy co n ve r t s a n a l o g a u d i o si g n a l s
f r o m t h e R J - 1 1 C o n n e c t o r ( A u d i o I n p u t ) t o d i g i t a l si g n a l s f o r t h e syst e m . T h e F r o n t P a n e l A u d i o P C B
A s s y a l s o p r o v i d e s o u t p u t a n a l o g a u d i o s i g n a l s t o t h e R J - 1 1 C o n n e c t o r ( A u d i o O u t p u t ) b y c o n ve r t i n g
d i g i t a l si g n a l s f r o m t h e s y s t e m . S i g n a l T o n e o r D a t a f i l t e r i n g , i n a d d i t i o n t o t h e b a l a n c e d o r
u n b a l a n ce d sw i t c h e s , a r e p r e f o r m e d b y t h e F r o n t P a n e l A u d i o P C B A s s y . O u t p u t s i g n a l s f r o m t h e
Front Panel Audio PCB Assy are the audio function generator signals and the demodulated audio
si g n a l ( D e m o d ) . A u d i o I n p u t s i g n a l s t o t h e F r o n t P a n e l A u d i o P C B A s s y a r e t h e m i c r o p h o n e a n d
S i n a d I n si g n a l s .
The Front Panel Audio PCB Assy generates a digitally controlled output voltage for the Test
Connector and routes input/output signals to/from the Test Connector.
CLOCK
DATA
PROGRAMABLE
RESISTOR
LATCH
REGULATOR
VOLTAGE
1.5 to 12 Vdc
FUNCTION
GENERATOR
AUDIO
8 POLE
20 kHz LPF
8 POLE
50 kHz LPF
CLOCK
DATA
LATCH
12 BIT D/A
CONVERTER
8 POLE
20 kHz LPF
DEMOD AUDIO
8 POLE
50 kHz LPF
SERIAL DATA
SERIAL CLOCK
12 BIT ADC
CONVERTER
8 POLE
20 kHz LPF
SINAD AUDIO +
SINAD AUDIO REFERENCE
VOLTAGE
SERIAL DATA
SERIAL CLOCK
12 BIT ADC
CONVERTER
+V
8 POLE
20 kHz LPF
MIC AUDIO
042M-038
Figure 1-3 Front Panel Audio PCB Assy Block Diagram
1-14
1- 3- 3
CPU ADAPT ER ASSY ( 42A1A1A5)
Refer to Figure 1-2.
T h e C P U A d a p t e r P C B A s s y p r o v i d e s a c o n ve n i e n t m e c h a n i s m b y w h i c h a l l C P U g e n e r a t e d s i g n a l s
a r e d i s t r i b u t e d t h r o u g h t h e B a c k p l a n e P C B A ssy t o o t h e r syst e m a sse mb l i e s. A si n g l e b o a r d
co m p u t e r i s m o u n t e d t o t h e C P U A d a p t e r P C B A ssy. F l a t r i b b o n c a b l e s a r e u s e d t o i n t e r c o n n e ct t h e
P C B a sse m b l i e s t o g e t h e r . T h e B a c k p l a n e P C B A s s y i n t e r f a c e c o n s i s t s o f t h r e e 9 6 P i n D I N
Connectors.
1-15
1- 3- 4
PO WER SUPPLY ASSY ( 42A1A1A6)
Refer to Figures 1-2 and 1-4.
A C p o w e r f o r t h e P o w e r S u p p l y A s s y i s p r o vi d e d b y a n I E C u n i ve r sa l 3 - p r o n g p o w e r e n t r y m o d u l e w i t h
an integrated power switch, fuses and EMI filter. This feeds the 225 W power supply with an input
r a n g e o f 8 5 t o 2 6 4 V A C a t a 4 7 t o 6 3 H z r a t e . T h e P o w e r S u p p l y A sse m b l y i s r e sp o n si b l e f o r
generating all internal voltages required to operate the 2975.
F o u r d i f f e r e n t v o l t a g e s a r e g e n e r a t e d b y t h e P o w e r S u p p l y A ssy a n d d i s t r i b u t e d t h r o u g h t h e
Backplane PCB Assy:
+5 V (Analog and Digital)
+12 V
-12 V
+ 5 . 1 V A ( a ‘ k e e p a l i v e ’ v o l t a g e f o r t u r n - o n ci r cu i t r y)
T h e f i l t e r a r r a y o n t h e V 1 ( 5 V ) p o w e r s u p p l y o u t p u t i so l a t e s t h e d i g i t a l a n d a n a l o g + 5 V ci r cu i t r y.
FAN
ON/OFF
BATTERY SENSE
+15 V
POWER
ENTRY
POWER
SUPPLY
INTERFACE
POWER
SUPPLY
-15 V
+5 V (Digital)
+5 VA (Analog)
POWER ON
POWER OFF
042M-039
Figure 1-4 Power Supply Assy Block Diagram
1-16
1- 3- 5
PO WER TERMINATIO N ASSY ( 42A1A1A7)
Refer to Figures 1-2 and 1-5.
The Power Termination Assy consists of four PCB Assemblies: LNA, GEN Buffer, RF Power and
C o n t r o l l e r . T h e a s s e m b l y h o u s i n g p r o v i d e s c i r c u i t i s o l a t i o n , w h i c h m u s t b e v e r y h i g h f o r t h e t r a cki n g
g e n e r a t o r f u n ct i o n , a s w e l l a s p r o v i d i n g h e a t s i n k c o o l i n g f o r t h e h i g h p o w e r R F i n p u t . T h e co o l i n g
fan is turned on and off by the processor control based on the temperature of the Power Termination
Assy.
The Power Termination Assy provides the focal point through which RF signals pass between the UUT
a n d t h e 2 9 7 5 . T h e r e a r e t h r e e R F u s e r i n t e r f a c e co n n e ct o r s ( o n t h e f r o n t o f t h e u n i t ) ( A N T E N N A I N ,
G E N O U T , T / R ) a n d t w o i n t e r n a l c o a x i a l c a b l e c o n n e c t i o n s ( R e c e i v e r A ssy a n d G e n e r a t o r A ss y) .
POWER TERMINATION RF I/O
The Power Termination Assy has three RF inputs, one output and one bi-directional connector. The
m a i n R F T / R ( t r a n s m i t / r e c e i v e ) c o n n e c t o r i s a t yp e “ N ” co n n e ct o r w h i ch ca n b e u se d f o r f u l l d u p l e x
o p e r a t i o n a n d i s t h e p r i m a r y p o w e r m e a s u r e m e n t co n n e ct o r . T h e A N T ( o r A n t e n n a ) a n d G E N ( o r
G e n e r a t o r ) c o n n e c t o r s a r e T N C c o n n e c t o r s. T h e T / R C o n n e ct o r i s d e si g n e d t o a cce p t i n p u t R F
si g n a l s f r o m D C t o 2 . 7 G H z a t p o w e r l e v e l s u p t o 1 5 0 W . A t p o w e r l e v e l s > 5 0 W , t h e i n p u t p o w e r
must maintain a duty cycle of 20% on and 80% off.
The ANT Connector provides low signal level operation through a LNA (Low Noise Amplifier) which
i m p r o ve s t h e se n s i t i v i t y a n d c a n b e u s e d t o m o n i t o r l o w l e v e l s i g n a l s w i t h t h e a p p l i c a t i o n o f a n
e xt e r n a l a n t e n n a . T h e A N T C o n n e c t o r i s p r o t e ct e d f r o m h i g h p o w e r l e ve l s b y a l i m i t e r ci r cu i t .
T h e G E N C o n n e c t o r p r o v i d e s a n o u t p u t s i g n a l o f + 1 0 d B m o v e r t h e 1 t o 2 7 0 0 M H z r a n g e , a n d ca n b e
used in conjunction with the ANT Connector to do scalar measurements in the tracking generator
operation mode.
T h e f i n a l t w o R F S S M B c o n n e c t o r s a r e t h e r e ce i ve o u t p u t t o t h e R e ce i ve I F A ssy a n d t h e i n p u t f r o m
the Generator Assy.
RF POWER DETECTOR
A d i o d e d e t e ct o r o n t h e R F P o w e r P C B A ssy a t t h e o u t p u t o f a f o u r - w a y p o w e r sp l i t t e r se r ve s t o
m e a su r e R F p o w e r a p p l i e d t o t h e T / R C o n n e c t o r .
TEMPERATURE SENSORS
T h e r e a r e t w o t e m p e r a t u r e s e n s o r s o n t h e R F P o w e r P C B A s s y . S e n so r 1 i s u se d t o m o n i t o r t h e
temperature of the 20 dB RF power attenuator. Sensor 2 is used to monitor the ambient temperature
o f t h e d i o d e d e t e c t o r t o e n a b l e t e m p e r a t u r e co r r e ct i o n o f t h e p o w e r m e t e r .
1-17
POWER TERMINATION - RF SECTION
+6.3 V
-5 V
VCC
CONTROL
+5 V
DET-B
ANT
LIMITER
RXOUT_SSMBCOAX
LNA
RXSWB_PIN6
RXSWA_PIN5
RXBIAS_IN
RXOLDET_OUT
LNA_BIAS
T/R
20 dB
125 W
ATTENUATOR
3 WAY
POWER
DIVIDER
POWER
DETECTOR
DC
AMP
DET-L
DET-H
GENAMP_BIAS
TEMP SENSOR
TEMP SENSOR
TXBIAS_IN
TXOLDET_OUT
VCC
CONTROL
TXSWA_PIN5
TXSWB_PIN6
GEN
LIMITER
BUFFER
AMP
RF
SWITCH
TXOUT_SSMBCOAX
TEMP-1
TEMP-2
DET_SLO
042M-040
Figure 1-5 Power Termination Assy Block Diagram
1-18
SPARE
SPARE
FAN_A0
FAN_A1
FAN_A2
POWER TERMINATION - CONTROLLER SECTION
FAN_DRIVE
FAN
DRIVER
POWER
SUPPLY
FAN
FAN_RETURN
TX_OVLD_OUT
SWITCHING
CONTROLLER
RX_OVLD_OUT
TXT/R_IN
RX SWITCH AND LIMITER
CONTROL
OVLD_RESET_IN
+6.3 V
-5 V
-6.3 V
D-OUT
SCLK
PWR
DETECT
AMP
D-IN
A/D
AD791AP-2
RFS
TFS
GEN SWITCH AND LIMITER
CONTROL
CS
EEPROM
CLK
S-IN
S-OUT
SWITCHING
CONTROLLER
+15 V
-15 V
+5 V
DET_SLO
GND
F i g u r e 1 - 5 P o w e r T e r m i n a t i o n A s s y B l o c k D i a g r a m ( co n t )
1-19
GND
042M-041
1- 3- 6
DISK I/O PCB ASSY ( 42A1A1A9)
Refer to Figures 1-2 and 1-6.
C P U I / O si g n a l s a r e r o u t e d t o t h e D i s k I / O P C B A ssy p l u g - i n sl o t t h r o u g h t h e B a ckp l a n e P C B A ssy.
T h e f l o p p y si g n a l s g o d i r e c t l y t o a 2 6 - p i n f l e x c a b l e h e a d e r , p r o v i d i n g a c o n v e n i e n t c o n n e c t i o n t o a
3 . 5 ” h a l f - h e i g h t f l o p p y d i s k d r i v e . L o c a t e d o n t h e D i sk I / O P C B A s s y i s t h e O C X O o s c i l l a t o r ,
p r o v i d i n g a v e r y s t a b l e a n d a c c u r a t e 1 0 M H z r e f e r e n c e f r e q u e n c y f o r t h e s y s t e m . A D A C , d r i ve n b y
t h e M u l t i f u n ct i o n I / O P C B A s s y p r o v i d e s v o l t a g e t u n i n g o f t h e O C X O . A se r i a l E E P R O M st o r e s t h e
factory calibrated tuning voltage for the oscillator. A dual DAC drives the speaker amplifier after it is
f i l t e r e d b y a 4 . 6 k H z f i l t e r . A d i f f e r e n t i a l A - D c o n ve r t e r , d r i ve n b y t h e M u l t i f u n ct i o n I / O P C B A s s y
monitors the battery voltage.
Audio D/A Convertor
Volume Control
Power Amp
Audio Latch
Clock Data
Volume Latch
Int/Ext
Reference Adjust DAC
10 MHz
Reference Oscillator
REF/BACKLIGHT
BackLight DAC
0 to 1.36 V
BackLight Control
E2_DOUT
E2_CS
EEPROM
Battery +
Data Out
Battery -
ADC
ADC_ENABLE
042M-042
Figure 1-6 Disk I/O PCB Assy Block Diagram
1-20
1- 3- 7
ATTENUAT O R ASSY ( 42A1A3)
Refer to Figures 1-2 and 1-7.
T h e a t t e n u a t o r c o n s i s t s o f s i x r e l a y - a t t e n u a t o r se c t i o n s a n d a d r i v e r b o a r d . O n e r e l a y - a t t e n u a t o r
se ct i o n i s 1 0 d B , a n d t h e o t h e r f i ve r e l a y- a t t e n u a t o r s e c t i o n s a r e 2 0 d B ; f o r a t o t a l a t t e n u a t i o n o f
1 1 0 d B . T h e d r i v e r b o a r d c o n t a i n s a s e r i a l t o p a r a l l e l co n ve r t e r a n d si x t r a n si st o r d r i ve r st a g e s,
which drive the attenuator relays with the required current. The module uses 5 V for the supply and
relay drives.
E a ch i n d i vi d u a l s t a g e h a s a n a c c u r a c y ( ± 0 . 5 d B ) t o i t s r a t e d va l u e . T h e a t t e n u a t o r h a s a f r e q u e n cy
r e s p o n s e f l a t n e s s ( s l o p e ) f r o m 0 t o 2 . 7 G H z o f < 3 d B . T h i s sl o p e r e m a i n s co n st a n t ( ± 0 . 5 d B ) w i t h
different stages of attenuation on or off. This error is removed when the 2975 is calibrated.
10 Pin Header
1
2
Data
3
4
5
6
Latch
7
8
+5 VA
9
10
Clock
GND
Shift Register with Latch
6
Attenuator Switches
GND
GND
042M-043
Figure 1-7 Attenuator Assy Block Diagram
1-21
1- 3- 8
G ENERATO R ASSY ( 42A1A4)
Refer to Figure 1-2.
T h e C A I P C B A s s y p r o v i d e s 1 1 . 4 M H z I F t o t h e G e n e r a t o r A ssy f o r f r e q u e n c y c o n v e r s i o n t o t h e
d e s i r e d o u t p u t f r e q u e n c y . T h e G e n e r a t o r A s s y p r o vi d e s 0 . 1 d B s t e p s b e t w e e n t h e 1 0 d B s t e p s o f t h e
st e p a t t e n u a t o r a t t a c h e d t o t h e t o p o f t h e G e n e r a t o r A s s y . T h e G e n e r a t o r A ssy i s a l so u se d a s t h e
t r a c k i n g g e n e r a t o r , a l l o w i n g f o r s w e p t m e a su r e m e n t s su ch a s f i l t e r r e sp o n se . T h e G e n e r a t o r A ssy
co n si st s o f t w o s e p a r a t e P C B A s s e m b l i e s: R F / M i cr o w a ve P C B A ssy a n d t h e S yn t h e si ze r / C o n t r o l P C B
A s s y . T h e l o w e r f r e q u e n c y f u n c t i o n s r e s i d e o n t h e S yn t h e si ze r / C o n t r o l P C B A s s y , w h i l e t h e h i g h e r
f r e q u e n c y f u n c t i o n s r e s i d e o n t h e R F / M i cr o w a ve P C B A ssy.
RF/MICROWAVE PCB ASSY
The RF/Microwave PCB Assy is designed to convert a 11.4 MHz IF input to any frequency from 1 MHz
t o 2 . 7 G H z. T h e 1 1 . 4 M H z I F s i g n a l i s c o n v e r t e d t o 3 i n c r e a s i n g l y h i g h e r I F f r e q u e n c i e s : 9 1 . 4 , 6 1 1 . 4
and 3411.4 MHz respectively. At each IF, a considerable amount of filtering is performed in order to
r e m o ve t h e i m a g e s r e s u l t i n g f r o m t h e p r e v i o u s u p - c o n v e r s i o n . F i n a l l y , t h e 3 4 1 1 . 4 M H z s i g n a l i s
d o w n - co n ve r t e d t o t h e d e s i r e d f r e q u e n c y . T h e s i g n a l i s t h e n l e v e l e d a n d a m p l i f i e d u p t o a l e ve l h i g h
e n o u g h t o o ve r c o m e t h e l o s s e s o f t h e s t e p a t t e n u a t o r a n d p o w e r t e r m i n a t i o n a n d s t i l l m e e t t h e
s p e ci f i e d m a xi m u m o u t p u t p o w e r l e v e l .
POWER AMPLIFIER / POWER DETECTION
The output of the ALC gain control element serves as input to the power amplifier. The total gain
a c r o ss t h e p o w e r a m p l i f i e r s t r i p i s a p p r o xi m a t e l y 4 6 d B . R o u g h l y - 2 6 d B m o u t o f t h e v o l t a g e va r i a b l e
a t t e n u a t o r p r o d u c e s f u l l p o w e r ( + 2 0 d B m ) a t t h e o u t p u t co n n e ct o r o f t h e R F / M i cr o w a ve P C B A ssy.
T h e r e si st i ve t a p j u s t b e f o r e t h e o u t p u t a t t e n u a t o r p r o v i d e s t h e s a m p l e p o i n t f o r o u t p u t p o w e r
d e t e ct i o n . T h e d e t e c t e d p o w e r v o l t a g e u n d e r g o e s a n i n v e r s i o n a n d i s p a s s e d t h r o u g h a l o g
l i n e a r i za t i o n ci r c u i t . T h e p o w e r d e t e c t o u t p u t i s p a s s e d o v e r t o t h e A L C f u n c t i o n s o n t h e
Synthesizer/Control PCB Assy for generator output leveling.
SYNTHESIZER/CONTROL PCB ASSY
T h e S y n t h e si ze r / C o n t r o l P C B A s s y c o n s i s t s o f 3 m a j o r l o o p s : D D S , m a i n a n d c o m b d r i v e r . T h i s
s t r u c t u r e l o c k s a Y I G o s ci l l a t o r b y m i x i n g t h e o u t p u t w i t h t h a t o f t h e c o m b f r e q u e n c y c o m i n g f r o m t h e
cl e a n l o o p . T h e c o m b m o v e s i n a p p r o x i m a t e l y 0 . 4 M H z s t e p s p r o v i d i n g a c o a r s e t u n e . T h e D D S ,
w h i ch i s t u n a b l e i n e x t r e m e l y f i n e s t e p s , d r i v e s t h e m a i n l o o p , g i v i n g t h e S y n t h e s i z e r / C o n t r o l P C B
A s s y s u b - h e r t z r e s o l u t i o n . T h e c o m b d r i ve r h a s 2 l o o p s t h a t g e n e r a t e a n e x c e p t i o n a l l y c l e a n si g n a l
t h a t i s m u l t i p l i e d u p t o t h e Y I G f r e q u e n c y . T h e s t e p l o o p p r o v i d e s a l l o f t h e s t e p s i z e f o r t h e co m b
d r i ve r a n d i s f o l l o w e d b y t h e c l e a n l o o p w h i c h t r a cks t h e st e p l o o p c h a n g e s .
T h e f r e q u e n ci e s o f 8 0 a n d 4 0 0 M H z t h a t e x i s t i n t h e R e c e i v e r A ssy a r e r e u se d t o g e n e r a t e t h e L O s
u s e d f o r t h e u p - c o n v e r t e r b l o c k . T h i s i s w h a t d e t e r m i n e d t h e ch o i ce o f I F f r e q u e n ci e s. I n o r d e r t o
co n ve r t 1 1 . 4 t o 9 1 . 4 M H z , 1 1 . 4 M H z i s m i x e d w i t h 8 0 M H z a n d t h e s u m p r o d u c t t a k e n . T h e 5 2 0 M H z
LO needed for the 611.4 MHz IF is generated by dividing 400 MHz by 2. This 200 MHz signal is
m i x e d w i t h t h e 8 0 M H z i n a m i x e r t h a t h a s p o o r t h i r d o r d e r L O p e r f o r m a n ce . T h e 3 r d L O m i n u s t h e I F
p r o d u ce s 6 0 0 M H z . S u b t r a c t 8 0 M H z f o r a s u m o f 5 2 0 M H z . F i n a l l y , t h e 2 8 0 0 M H z L O n e e d e d t o
co n ve r t 6 1 1 . 4 t o 3 4 1 1 . 4 M H z i s g e n e r a t e d b y m u l t i p l y i n g 4 0 0 M H z b y 7 .
1-22
1- 3- 9
IF/VIDEO PCB ASSY ( 42A1A5)
Refer to Figure 1-2.
T h e I F / V i d e o P C B A s s y co n d i t i o n s i n c o m i n g s i g n a l s f r o m t h e R e c e i v e I F A s s y f o r t h e C A I P C B A s s y
a n d p r o v i d e s a s q u a r e d I F s i g n a l t o t h e M u l t i f u n ct i o n I / O P C B A ssy f o r f r e q u e n cy co u n t e r ci r cu i t r y.
T h e I F / V i d e o P C B A s s y p r o v i d e s t h e a n a l y z e r g a i n a d j u s t m e n t w h e n a d j u s t i n g t h e R e f e r e n c e l e ve l
d B m o n t h e S p e c t r u m A n a l y z e r , a n d a c t s a s t h e r e ce i ve r A u t o m a t i c G a i n C o n t r o l ( A G C ) w h e n i n t h e
R e ce i ve r m o d e . A s w e l l , p r o v i d i n g a d i g i t i z e d l o g a r i t h m i c r e p r e s e n t a t i o n o f t h e i n c o m i n g s i g n a l
a m p l i t u d e f o r b o t h t h e “ c h a n n e l ” a n d “ w i d e sca n ” a n a l yze r m o d e s.
The IF/Video PCB Assy also provides a buffered 10.7 MHz IF signal and spectrum analyzer video to
t h e r e a r o f t h e 2 9 7 5 . F i n a l l y , t h e I F / V i d e o P C B A ssy p r o vi d e s a t e mp e r a t u r e se n so r f o r se n si n g t h e
internal ambient unit temperature.
IF/VIDEO - 10.7 MHZ IF FILTERS
T h e 1 0 . 7 M H z I F p a t h p r o v i d e s g a i n a d j u s t m e n t a n d h a r d w a r e b a n d w i d t h r e s t r i c t i o n o f t h e i n co m i n g
si g n a l f r o m t h e R e c e i v e I F A s s y t o b e u s e d b y t h e C A I P C B A s s y D i g i t a l S i g n a l P r o ce sso r ( D S P ) .
F r o m t h i s p a t h , a l l s i g n a l p r o c e s s i n g , d e c o d i n g a n d m e t e r i n g f u n c t i o n s a r e p e r f o r m e d . T h e I F i s a l so
sq u a r e d u p f o r t h e I F f r e q u e n c y c o u n t e r ci r cu i t r y f o r t h e M u l t i f u n ct i o n I / O P C B A s s y . T h e 1 0 . 7 M H z
f i l t e r b a n d w i d t h s e l e c t i o n s i n c l u d e : 6 M H z, 3 0 0 k H z a n d 3 0 k H z .
IF/VIDEO - 5.3 MHZ IF FILTERS “CHANNEL” IF
The Spectrum Analyzer 5.3 MHz IF functions to provide a fixed frequency down-conversion of the CAI
10.7 MHz IF signal for the “Look and Listen Mode” in the Channel Analyzer screens. The 5.3 MHz
filter bandwidth selections include: 60 kHz, 3 kHz and 300 Hz.
1-23
1- 3- 10
MULTIF UNCT IO N I/O PCB ASSY ( 42A1A6)
Refer to Figures 1-2 and 1-8.
T h e M u l t i f u n ct i o n I / O P C B A s s y c o n s i s t s o f t w o i n d e p e n d e n t s u b syst e m s: S co p e / D V M S u b syst e m a n d
A u d i o S u b s y s t e m . T h e M u l t i f u n ct i o n I / O P C B A s s y p e r f o r m s t h e f o l l o w i n g f u n ct i o n s:
O
Two Channel Scope with external trigger capability
O
Digital Voltmeter
O
D i g i t a l A u d i o t o F r o n t P a n e l P C B A s s y f o r t h e F u n ct i o n G e n e r a t o r a n d D E M O D o u t p u t s
O
Speaker Driver circuit
O
D i g i t a l A u d i o i n p u t s f r o m F r o n t P a n e l P C B A ssy
O
RF Subsystem Control I/O
O
Digital Function Generator for modulation formats
The main components of the Multifunction I/O module are two Motorola DSP’s. One is an Altera
F P G A , w h i ch p e r f o r m s t h e a c t u a l c o n t r o l o f t h e R F s u b s y s t e m s . T h e o t h e r i s a d u a l c h a n n e l sco p e .
O n e D S P f u n c t i o n s a s t h e S c o p e / D V M s u b syst e m a n d t h e o t h e r p e r f o r m s t h e A u d i o a n d R F c o n t r o l
su b s y s t e m s .
T h e p r i m a r y p u r p o s e o f t h e m a s t e r D S P i s t o co n t r o l a n d r e a d t h e R F su b yst e m s. I t m u st a l so a ct a s
t h e i n t e r f a c e t o t h e h o s t C P U f o r i t s e l f a n d t h e S co p e / D V M D S P . A b i - d i r e ct i o n a l , h i g h sp e e d se r i a l
d a t a c h a n n e l t o t h e C A I P C B A s s y i s a l s o p r o vi d e d f o r d e m o d u l a t e d a u d i o d a t a i n p u t a n d a u d i o d a t a
output that is to be modulated.
DVM
128K x 8
SRAM
DVM
128K x 8
SRAM
DVM
LOADS
DSP
DSP56301
80 MHz
SCOPE 1
SIGNAL
CONDITIONING
12 BIT
DAC
SCOPE 2
SIGNAL
CONDITIONING
12 BIT
DAC
DSP
DSP56301
80 MHz
2975
BUS
DEMOD AUDIO DATA
SCOPE/DVM
CONTROL
FUNC GEN/MIC AUDIO DATA
TRIGGER
SCOPE SAMPLING UP TO 10 MHz
CRYPTO CONTROL
AUDIO I/O DATA
FPGA
UUT DIG I/O
RF CONTROL
042M-044
F i g u r e 1 - 8 M u l t i f u n ct i o n I / O P C B A s s y B l o c k D i a g r a m
1-24
1- 3- 11
RECEIVER ASSY ( 42A1A7)
Refer to Figure 1-2.
T h e R e c e i v e r A s s y i s a s e l f c o n t a i n e d w i d e b a n d t r i p l e c o n v e r s i o n r e c e i v e r t h a t i s d e s i g n e d t o co n ve r t
i n co m i n g f r e q u e n c i e s ( 9 k H z t o 2 . 7 G H z ) t o a n o u t p u t I F f r e q u e n c y o f 1 0 . 7 M H z . T h e m o d u l e co n si st s
o f t w o s e p a r a t e P C B A s s e m b l i e s : R e c e i v e r P C B A ssy a n d t h e S yn t h e si ze r P C B A ssy.
RECEIVER PCB ASSY
T h e R e c e i v e r P C B A s s y c o n ve r t s i n c o m i n g f r e q u e n c i e s ( 9 k H z t o 2 . 7 G H z ) t o a n o u t p u t I F f r e q u e n cy
o f 1 0 . 7 M H z . T h e R e c e i ve r P C B A s s y p r o vi d e s a l l t h e n e ce s s a r y L O ’ s f o r t h e c o n ve r s i o n t o 1 0 . 7 M H z
I F . T h e 1 0 . 7 M H z I F i s r o u t e d t o t h e I F / V i d e o P C B A ssy f o r a d d i t i o n a l f i l t e r i n g a n d s i g n a l
co n d i t i o n i n g .
SYNTHESIZER PCB ASSY
T h e S y n t h e si ze r P C B A s s y c o n s i s t s o f 3 m a j o r l o o p s: t h e D D S , m a i n , a n d co m b d r i ve r . T h i s st r u ct u r e
l o c k s a Y I G o s ci l l a t o r b y m i x i n g i t s o u t p u t w i t h t h a t o f t h e c o m b f r e q u e n c y c o m i n g f r o m t h e c l e a n
l o o p . T h e co m b i t s e l f m o v e s i n a p p r o x i m a t e l y 0 . 4 M H z s t e p s p r o v i d i n g a c o a r s e t u n e . T h e D D S
w h i ch i s t u n a b l e i n e x t r e m e l y f i n e s t e p s , d r i v e s t h e m a i n l o o p g i v e s t h e s y n t h e s i z e r i t s s u b - h e r t z
r e so l u t i o n . T h e c o m b d r i v e r h a s 2 l o o p s t h a t g e n e r a t e a n e x c e p t i o n a l l y c l e a n s i g n a l t h a t i s m u l t i p l i e d
up to the YIG frequency. The step loop provides all of the step size for the comb driver and is
f o l l o w e d b y t h e c l e a n l o o p w h i c h t r a c k s t h e st e p l o o p c h a n g e s . T h e s y n t h e s i z e r / c o n t r o l b o a r d p r o vi d e
both 80 MHz and 400MHz reference for the Generator Module.
1-25
1- 3- 12
CAI PCB ASSY ( 42A1A8)
Refer to Figures 1-2 and 1-9.
The CAI (Common Air Interface) PCB Assy contains two DSP’s and the digital up/down converter
ch i p s e t . T h e m a i n r e s p o n s i b i l i t y o f t h e C A I P C B A s s y i s t o p r o vi d e t h e i n t e r f a ce b e t w e e n t h e I F a n d
t h e h o st C P U .
O
Digitally perform modulation and demodulation of IF signal using chipset and DSP.
O
P e r f o r m p a r a m e t r i c m e a s u r e m e n t s f r o m t h e I a n d Q d a t a t h a t i s g e n e r a t e d b y t h e c h i p se t .
O
P e r f o r m v o i c e E n c o d e r / D e c o d e r f u n ct i o n i n t h e M o t o r o l a D S P .
O
Generate received I and Q outputs.
O
Controlled by the host CPU over the ISA bus in which part of the address decoding has been
performed external to the CAI PCB Assy.
I OUT
DAC
Q OUT
DAC
128K x 24
SRAM
PARAMETRIC
DSP
I
10.7 MHz
FROM
IF/VIDEO
PCB ASSY
11.4 MHz
OUT TO
GENERATOR
ASSY
BUS
Q
DOWN
CONVERTER
I
ADC
Q
DAC
UP
CONVERTER
I
Q
LAYER 1
AND
VOCODER
DSP
GENERAL PURPOSE
SYNC (4) TO
MULTI-FUNCTION
PCB ASSY
128K x 24
SRAM
DIGITIZED AUDIO IN
DIGITIZED AUDIO OUT
TO MULTI-FUNCTION
PCB ASSY
042M-045
Figure 1-9 CAI PCB Assy Block Diagram
1-26
SECTION 2 - CALIBRATION/VERIFICATION
2-1
GENERAL
This section provides the maintenance technician with Calibration and Verification Procedures.
The Calibration/Verification Procedures should only be performed by Technicians familiar with the
setup and operation of the recommended test equipment.
2-1-1
CALIBRATION/VERIFICATION SCHEDULE
The Calibration/Verification Procedures should be performed as a result of one or more of the
following conditions:
O
The 2975 fails to meet the performance specifications
O
One or more assemblies are replaced
O
The recommended 12 month calibration interval is due
2-1-2
CONTROLS AND CONNECTORS
Refer to Appendix C for the location of the controls and connectors specified in the Calibration/
Verification Procedures.
2- 1- 3
TEST EQ UIPMENT REQ UIREMENT S
Appendix E contains a list of Test Equipment suitable for performing the Calibration/ Verifications
Procedures. Other equipment meeting the Test Equipment specifications listed in Appendix E may be
substituted in place of the recommended models.
2-1-4
TEST RECORD
Make copies of the Calibration and Verification Data Sheets to record results obtained while
performing the Calibration and Verification Procedures.
NOTE:
Calibration Results for the Generator and Analyzer Calibration process are stored in an
electronic file on the PC.
2- 1- 5
VERIF ICAT IO N SET UP F IL ES
There are 28 Verification Setup Files stored in the 2975. When performing the Verification
Procedures, the Recall feature of the 2975 is used to recall the Verification Setup File needed.
NOTE:
The Verification Setup Files are also included on the Calibration Software CD-ROM.
2-1-6
CALIBRATION SO FTWARE
The Calibration Software CD-ROM includes the Calibration Software, Verification Setup Files and
System Software.
NOTE:
The 2975 should be running System Software Version 1.9 or higher before the Calibration is
performed.
2-1
2-2
2- 2- 1
PRECAUTIONS
SAFET Y
A s w i t h a n y p i e c e o f e l e c t r o n i c e q u i p m e n t , t a ke e xt r e m e ca u t i o n w h e n w o r ki n g w i t h “ l i ve ” ci r cu i t s.
Observe the following precautions when performing the Calibration/Verification Procedures:
WARNING:
REMOVE ALL JEWELRY OR OTHER COSMETIC APPAREL BEFORE PERFORMING
ANY PROCEDURES INVOLVING “LIVE” CIRCUITS.
WHEN WORKING WITH LIVE CIRCUITS OF HIGH POTENTIAL, KEEP ONE HAND IN
POCKET OR BEHIND BACK TO AVOID SERIOUS SHOCK HAZARD.
USE ONLY INSULATED TROUBLESHOOTING TOOLS WHEN WORKING WITH LIVE
CIRCUITS.
FOR ADDED INSULATION, PLACE RUBBER BENCH MATS UNDER ALL POWERED
BENCH EQUIPMENT AND TECHNICIAN CHAIRS.
HEED ALL WARNINGS AND CAUTIONS CONCERNING MAXIMUM VOLTAGES AND
POWER INPUTS.
2- 2- 2
ESD
CAUTION:
ONLY PERFORM CALIBRATION/VERIFICATION PROCEDURES IN AN ESD
E N V I R O N M E N T . A L L P E R S ON N E L P E R F O R M I N G T H E C A L I B R A T I O N / V E R I F I C A T I O N
PROCEDURES SHOULD HAVE KNOWLEDGE OF ACCEPTED ESD PRACTICES AND/OR
BE ESD CERTIFIED.
CAUTION
THIS EQUIPMENT CONTAINS PARTS
SENSITIVE TO DAMAGE
BY ELECTROSTATIC DISCHARGE (ESD)
2-3
DISASSEMBLY REQUIREMENTS
R e m o v e t h e C a s e A s s y f r o m t h e 2 9 7 5 t o p e r f o r m t h e P o w e r S u p p l y V o l t a g e s C a l i b r a t i o n P r o ce d u r e s.
Refer to the individual Calibration Procedures for additional disassembly requirements.
T h e C a s e A s s y sh o u l d b e r e a s s e m b l e d p r i o r t o p e r f o r m i n g t h e T X C O a n d G e n e r a t o r / A n a l yze r
Calibration Procedures.
2-2
2-4
VERIFICATION PROCEDURES
To perf orm a Calibration Verificat ion, perf orm para 2- 4- 2 through 2- 4- 9.
To perf orm a Syst em Verificat ion, perf orm para 2- 4- 2 through 2- 4- 29.
2- 4- 1
INITIAL SETUP
PREREQUISITES:
None
EQUIPMENT REQUIRED:
1 0 M H z F r e q u e n cy S t a n d a r d
STEP
PROCEDURE
1. Connect the 2975 to an appropriate external power source.
2 . S e t t h e M A I N P O W E R S w i t c h ( R e a r P a n e l ) t o t h e O N p o si t i o n .
3 . C o n n e c t t h e 1 0 M H z F r e q u e n cy S t a n d a r d t o t h e E X T E R N A L R F I / O C o n n e ct o r .
4 . W h e n t h e O p e n i n g S c r e e n i s d i s p l a y e d , p r e s s M O D E K e y, “ 7 ” K e y a n d “ 1 ” K e y t o d i sp l a y
the Configuration Screen.
5 . P r e ss M O D E K e y, “ 7 ” K e y a n d “ 7 ” K e y t o d i s p l a y t h e R e c a l l M e n u .
The 2975 syst em paramet ers are now ready t o be verif ied.
2-3
2-4-2
GENERATOR OUTPUT FREQ UENCY
PREREQUISITES:
2-4-1
Initial Setup
EQUIPMENT REQUIRED:
Universal Counter
STEP
PROCEDURE
1.
Recall Verification Setup File #1.
2.
Disconnect the 10 MHz Frequency Standard from the EXTERNAL RF I/O Connector.
3.
Connect the Universal Counter to the GEN Connector.
4.
Verify 1 GHz (±10 Hz) on the Universal Counter.
5.
•
If reading is correct, go to Step 5.
•
If reading is out of tolerance, perform the 2975 Calibration Procedures (para 2-6).
Perform one of the following:
•
If this procedure is performed as a stand-alone procedure, perform the following key
sequences to reset Factory Default Settings, then remove power from the Unit and
disconnect the test equipment.
Press MODE Key, 7 Key, 1 Key to display the Configuration Screen.
Press 10 MHz REFERENCE to select Internal reference.
Press FACTORY DEFAULT (F2) to restore the Unit to Factory Defaults.
•
If this procedure is performed as part of a complete Verification, reconnect the
10 MHz Frequency Standard to the EXTERNAL RF I/O Connector and proceed with
the next Verification Procedure.
2-4
2-4-3
GENERATOR OUTPUT PO WER
PREREQUISITES:
2-4-1
Initial Setup
EQUIPMENT REQUIRED:
Power Meter
STEP
PROCEDURE
1.
Recall Verification Setup File #2.
2.
Connect the Power Meter to the GEN Connector.
3.
Set the Power Meter to 501 MHz at +10.0 dBm.
4.
Verify the following levels on the Power Meter:
2975 GENERATOR LEVEL
5.
POWER METER LEVEL
+10 dBm
+10 dBm (±1.5 dB)
0 dBm
0 dBm (±1.5 dB)
-10 dBm
-10 dBm (±1.5 dB)
-20 dBm
-20 dBm (±1.5 dB)
-30 dBm
-30 dBm (±1.5 dB)
-40 dBm
-40 dBm (±1.5 dB)
-50 dBm
-50 dBm (±1.5 dB)
-60 dBm
-60 dBm (±1.5 dB)
•
If all readings are correct, go to Step 5.
•
If any reading is out of tolerance, perform the 2975 Calibration Procedures
(para 2-6).
Perform one of the following:
•
If this procedure is performed as a stand-alone procedure, perform the following key
sequences to reset Factory Default Settings, then remove power from the Unit and
disconnect the test equipment.
Press MODE Key, 7 Key, 1 Key to display the Configuration Screen.
Press 10 MHz REFERENCE to select Internal reference.
Press FACTORY DEFAULT (F2) to restore the Unit to Factory Defaults.
•
If this procedure is performed as part of a complete Verification, proceed with the
next Verification Procedure.
2-5
2- 4- 4
G ENERAT O R LEVEL FL AT NESS
PREREQUISITES:
2-4-1
Initial Setup
EQUIPMENT REQUIRED:
Power Meter
STEP
PROCEDURE
1.
Recall Verification Setup File #3.
2.
Connect the Power Meter to the GEN Connector.
3.
Set the 2975 to the following frequencies and verify 0 dBm (±1.5 dB) on the Power
Meter:
170 MHz
220 MHz
270 MHz
320 MHz
370 MHz
420 MHz
470 MHz
520 MHz
570 MHz
620 MHz
670 MHz
720 MHz
770 MHz
820 MHz
870 MHz
920 MHz
970 MHz
1020 MHz
1070 MHz
1120 MHz
1170 MHz
1220 MHz
1270 MHz
1320 MHz
1370 MHz
1420 MHz
4.
1470 MHz
1520 MHz
1570 MHz
1620 MHz
1670 MHz
1720 MHz
1770 MHz
1820 MHz
1870 MHz
1920 MHz
1970 MHz
2020 MHz
2070 MHz
2120 MHz
2170 MHz
2220 MHz
2270 MHz
2320 MHz
2370 MHz
2420 MHz
2470 MHz
2520 MHz
2570 MHz
2620 MHz
2670 MHz
2700 MHz
•
If all readings are correct, go to Step 4.
•
If any reading is out of tolerance, perform the 2975 Calibration Procedures
(para 2-6).
Perform one of the following:
•
If this procedure is performed as a stand-alone procedure, perform the following key
sequences to reset Factory Default Settings, then remove power from the Unit and
disconnect the test equipment.
Press MODE Key, 7 Key, 1 Key to display the Configuration Screen.
Press 10 MHz REFERENCE to select Internal reference.
Press FACTORY DEFAULT (F2) to restore the Unit to Factory Defaults.
•
If this procedure is performed as part of a complete Verification, proceed with the
next Verification Procedure.
2-6
2- 4- 5
G ENERAT O R T /R PO WER L EVEL ACCURACY
PREREQUISITES:
2-4-1
Initial Setup
EQUIPMENT REQUIRED:
Power Meter
STEP
PROCEDURE
1.
Recall Verification Setup File #4.
2.
Connect the Power Meter to the T/R Connector.
3.
Verify the following levels on the Power Meter:
2975 POWER LEVEL
4.
POWER METER LEVEL
-30.0 dBm
-30 dBm (±1 dB)
-40.0 dBm
-40 dBm (±1 dB)
-50.0 dBm
-50 dBm (±1 dB)
-60.0 dBm
-60 dBm (±1 dB)
•
If all readings are correct, go to Step 4.
•
If any reading is out of tolerance, perform the 2975 Calibration Procedures
(para 2-6).
Perform one of the following:
•
If this procedure is performed as a stand-alone procedure, perform the following key
sequences to reset Factory Default Settings, then remove power from the Unit and
disconnect the test equipment.
Press MODE Key, 7 Key, 1 Key to display the Configuration Screen.
Press 10 MHz REFERENCE to select Internal reference.
Press FACTORY DEFAULT (F2) to restore the Unit to Factory Defaults.
•
If this procedure is performed as part of a complete Verification, proceed with the
next Verification Procedure.
2-7
2- 4- 6
G ENERAT O R T/R PO WER L EVEL FLATNESS
PREREQUISITES:
2-4-1
Initial Setup
EQUIPMENT REQUIRED:
Power Meter
STEP
PROCEDURE
1.
Recall Verification Setup File #5.
2.
Connect the Power Meter to the T/R Connector.
3.
Set the 2975 to the following frequencies and verify -30 dBm (±1 dB) on the Power
Meter:
50 MHz
100 MHz
150 MHz
200 MHz
250 MHz
300 MHz
350 MHz
400 MHz
450 MHz
500 MHz
550 MHz
600 MHz
650 MHz
700 MHz
750 MHz
800 MHz
850 MHz
900 MHz
950 MHz
1000 MHz
1050 MHz
1100 MHz
1150 MHz
1200 MHz
1250 MHz
1300 MHz
1350 MHz
4.
1400 MHz
1450 MHz
1500 MHz
1550 MHz
1600 MHz
1650 MHz
1700 MHz
1750 MHz
1800 MHz
1850 MHz
1900 MHz
1950 MHz
2000 MHz
2050 MHz
2100 MHz
2150 MHz
2200 MHz
2250 MHz
2300 MHz
2350 MHz
2400 MHz
2450 MHz
2500 MHz
2550 MHz
2600 MHz
2650 MHz
2700 MHz
•
If all readings are correct, go to Step 4.
•
If any reading is out of tolerance, perform the 2975 Calibration Procedures
(para 2-6).
Perform one of the following:
•
If this procedure is performed as a stand-alone procedure, perform the following key
sequences to reset Factory Default Settings, then remove power from the Unit and
disconnect the test equipment.
Press MODE Key, 7 Key, 1 Key to display the Configuration Screen.
Press 10 MHz REFERENCE to select Internal reference.
Press FACTORY DEFAULT (F2) to restore the Unit to Factory Defaults.
•
If this procedure is performed as part of a complete Verification, proceed with the
next Verification Procedure.
2-8
2-4-7
RF PO WER METER ACCURACY
PREREQUISITES:
2-4-1
Initial Setup
EQUIPMENT REQUIRED:
RF Generator
STEP
PROCEDURE
1.
Recall Verification Setup File #6.
2.
Press ZERO on the 2975 Power Meter.
3.
Connect the RF Generator to the T/R Connector.
4.
Set the RF Generator to 500 MHz at 10.5 dBm.
5.
Verify 10.5 dBm (±1.05 dB) on the 2975 Power Meter.
6.
•
If reading is correct, go to Step 5.
•
If reading is out of tolerance, perform the 2975 Calibration Procedures (para 2-6).
Perform one of the following:
•
If this procedure is performed as a stand-alone procedure, perform the following key
sequences to reset Factory Default Settings, then remove power from the Unit and
disconnect the test equipment.
Press MODE Key, 7 Key, 1 Key to display the Configuration Screen.
Press 10 MHz REFERENCE to select Internal reference.
Press FACTORY DEFAULT (F2) to restore the Unit to Factory Defaults.
•
If this procedure is performed as part of a complete Verification, proceed with the
next Verification Procedure.
2-9
2-4-8
RSSI METER ACCURACY
PREREQUISITES:
2-4-1
Initial Setup
EQUIPMENT REQUIRED:
RF Generator
STEP
PROCEDURE
1.
Recall Verification Setup File #7.
2.
Calibrate the 2975 RSSI Meter (press the RSSI Meter CAL Button and follow the
on-screen prompts).
3.
Connect the RF Generator to the ANT Connector.
4.
Verify the following levels on the 2975 RSSI Meter:
RF GENERATOR SETTINGS
5.
2975 RSSI METER
10 MHz at -70 dBm
-70.0 dBm (±2.5 dB)
10 MHz at -60 dBm
-60.0 dBm (±2.5 dB)
10 MHz at -50 dBm
-50.0 dBm (±2.5 dB)
10 MHz at -40 dBm
-40.0 dBm (±2.5 dB)
10 MHz at -30 dBm
-30.0 dBm (±2.5 dB)
10 MHz at -20 dBm
-20.0 dBm (±2.5 dB)
•
If all readings are correct, go to Step 5.
•
If any reading is out of tolerance, perform the 2975 Calibration Procedures
(para 2-6).
Perform one of the following:
•
If this procedure is performed as a stand-alone procedure, perform the following key
sequences to reset Factory Default Settings, then remove power from the Unit and
disconnect the test equipment.
Press MODE Key, 7 Key, 1 Key to display the Configuration Screen.
Press 10 MHz REFERENCE to select Internal reference.
Press FACTORY DEFAULT (F2) to restore the Unit to Factory Defaults.
•
If this procedure is performed as part of a complete Verification, proceed with the
next Verification Procedure.
2-10
2- 4- 9
ANAL YZ ER L EVEL ACCURACY
PREREQUISITES:
2-4-1
Initial Setup
EQUIPMENT REQUIRED:
RF Generator
STEP
PROCEDURE
1.
Recall Verification Setup File #8.
2.
P r e ss N O R M A L ( F 5 ) o n t h e 2 9 7 5 S p e ct r u m A n a l yze r t o n o r m a l i ze t h e 2 9 7 5 S p e ct r u m
A n a l y z e r . ( T h i s m a y t a k e a f e w m i n u t e s. )
3.
C o n n e c t t h e R F G e n e r a t o r t o t h e A N T C o n n e ct o r .
4.
Set the RF Generator to 1 MHz at -30.0 dBm.
5.
Set the RF Generator and the 2975 to the following frequencies and verify -30 dBm
( ± 2 d B ) A n a l y z e r p e a k l e v e l o n t h e 2 9 7 5 S p e ct r u m A n a l yze r :
1 MHz
50 MHz
100 MHz
150 MHz
200 MHz
250 MHz
300 MHz
350 MHz
400 MHz
450 MHz
500 MHz
550 MHz
600 MHz
650 MHz
700 MHz
750 MHz
800 MHz
850 MHz
900 MHz
950 MHz
1000 MHz
1050 MHz
1100 MHz
1150 MHz
1200 MHz
1250 MHz
1300 MHz
1350 MHz
1400 MHz
1450 MHz
1500 MHz
1550 MHz
1600 MHz
1650 MHz
1700 MHz
1750 MHz
1800 MHz
1850 MHz
1900 MHz
1950 MHz
2000 MHz
2050 MHz
2100 MHz
2150 MHz
2200 MHz
2250 MHz
2300 MHz
2350 MHz
2400 MHz
2450 MHz
2500 MHz
2550 MHz
2600 MHz
2650 MHz
2700 MHz
•
I f a l l r e a d i n g s a r e c o r r e ct , g o t o S t e p 5 .
•
I f a n y r e a d i n g i s o u t o f t o l e r a n ce , p e r f o r m t h e 2 9 7 5 C a l i b r a t i o n P r o ce d u r e s
(para 2-6).
2-11
STEP
6.
PROCEDURE
Perform one of the following:
•
If this procedure is performed as a stand-alone procedure, perform the following key
sequences to reset Factory Default Settings, then remove power from the Unit and
disconnect the test equipment.
Press MODE Key, 7 Key, 1 Key to display the Configuration Screen.
Press 10 MHz REFERENCE to select Internal reference.
Press FACTORY DEFAULT (F2) to restore the Unit to Factory Defaults.
•
If this procedure is performed as part of a complete Verification, proceed with the
next Verification Procedure.
2-12
2-4-10
GENERATOR FM RESIDUAL
PREREQUISITES:
2-4-1
Initial Setup
EQUIPMENT REQUIRED:
Modulation Analyzer
STEP
PROCEDURE
1.
Recall Verification Setup File #9.
2.
Connect the Modulation Analyzer to the GEN Connector.
3.
Set the Modulation Analyzer for 300 Hz to 3 kHz post-detection filtering. Measure FM
level.
4.
Verify <15 Hz RMS on the Modulation Analyzer. Record level.
5.
•
If reading is correct, go to Step 5.
•
If reading is out of tolerance, this indicates a hardware failure in the 2975.
Probable source of failure: Generator Assy. Return the 2975 to Aeroflex for repair.
Perform one of the following:
•
If this procedure is performed as a stand-alone procedure, perform the following key
sequences to reset Factory Default Settings, then remove power from the Unit and
disconnect the test equipment.
Press MODE Key, 7 Key, 1 Key to display the Configuration Screen.
Press 10 MHz REFERENCE to select Internal reference.
Press FACTORY DEFAULT (F2) to restore the Unit to Factory Defaults.
•
If this procedure is performed as part of a complete Verification, proceed with the
next Verification Procedure.
2-13
2-4-11
GENERATOR AM RESIDUAL
PREREQUISITES:
2-4-1
EQUIPMENT REQUIRED:
Modulation Analyzer
STEP
Initial Setup
PROCEDURE
1.
Recall Verification Setup File #10.
2.
Connect the Modulation Analyzer to the GEN Connector.
3.
Set the Modulation Analyzer for 300 Hz to 3 kHz post-detection filtering. Measure AM
level.
4.
Verify <0.1% on the Modulation Analyzer. Record level.
5.
•
If reading is correct, go to Step 5.
•
If reading is out of tolerance, this indicates a hardware failure in the 2975.
Probable source of failure: Generator Assy. Return the 2975 to Aeroflex for repair.
Perform one of the following:
•
If this procedure is performed as a stand-alone procedure, perform the following key
sequences to reset Factory Default Settings, then remove power from the Unit and
disconnect the test equipment.
Press MODE Key, 7 Key, 1 Key to display the Configuration Screen.
Press 10 MHz REFERENCE to select Internal reference.
Press FACTORY DEFAULT (F2) to restore the Unit to Factory Defaults.
•
If this procedure is performed as part of a complete Verification, proceed with the
next Verification Procedure.
2-14
2-4-12
GENERATOR FM DEVIATION ACCURACY
PREREQUISITES:
2-4-1
2-4-5
EQUIPMENT REQUIRED:
Modulation Analyzer
STEP
Initial Setup
Generator FM Residual
PROCEDURE
1.
Recall Verification Setup File #11.
2.
Connect the Modulation Analyzer to the GEN Connector.
3.
Set the Modulation Analyzer to measure FM with the 15 kHz LP Filter selected.
4.
Record the FM deviation shown on the Modulation Analyzer.
5.
Subtract the reading recorded in para 2-4-10 from the reading recorded in Step 4.
Verify FM deviation is 10 kHz (±0.30 kHz).
6.
•
If reading is correct, go to Step 5.
•
If reading is out of tolerance, this indicates a hardware failure in the 2975.
Probable source of failure: Multifunction I/O PCB Assy or Generator Assy. Return
the 2975 to Aeroflex for repair.
Perform one of the following:
•
If this procedure is performed as a stand-alone procedure, perform the following key
sequences to reset Factory Default Settings, then remove power from the Unit and
disconnect the test equipment.
Press MODE Key, 7 Key, 1 Key to display the Configuration Screen.
Press 10 MHz REFERENCE to select Internal reference.
Press FACTORY DEFAULT (F2) to restore the Unit to Factory Defaults.
•
If this procedure is performed as part of a complete Verification, proceed with the
next Verification Procedure.
2-15
2-4-13
GENERATOR FM MODULATION RATE
PREREQUISITES:
2-4-1
EQUIPMENT REQUIRED:
Modulation Analyzer
STEP
Initial Setup
PROCEDURE
1.
Recall Verification Setup File #12.
2.
Connect the Modulation Analyzer to the GEN Connector.
3.
Set the Modulation Analyzer to measure FM with the 15 kHz LP Filter selected.
4.
Record the FM deviation level for the following AF Field settings. Subtract the FM
Residual reading recorded in para 2-4-10 and verify the FM deviation for the following
AF Field settings on the Modulation Analyzer:
2975 (M1) AF FIELD
5.
FM DEVIATION
50.0 Hz
6 kHz (±0.18 kHz)
300.0 Hz
6 kHz (±0.18 kHz)
10000.0 Hz
6 kHz (±0.18 kHz)
•
If all readings are correct, go to Step 5.
•
If reading is out of tolerance, this indicates a hardware failure in the 2975.
Probable source of failure: Multifunction I/O PCB Assy or Generator Assy. Return
the 2975 to Aeroflex for repair.
Perform one of the following:
•
If this procedure is performed as a stand-alone procedure, perform the following key
sequences to reset Factory Default Settings, then remove power from the Unit and
disconnect the test equipment.
Press MODE Key, 7 Key, 1 Key to display the Configuration Screen.
Press 10 MHz REFERENCE to select Internal reference.
Press FACTORY DEFAULT (F2) to restore the Unit to Factory Defaults.
•
If this procedure is performed as part of a complete Verification, proceed with the
next Verification Procedure.
2-16
2-4-14
GENERATOR FM MODULATION DIST ORTION
PREREQUISITES:
2-4-1
EQUIPMENT REQUIRED:
Modulation Analyzer
Audio Analyzer
STEP
Initial Setup
PROCEDURE
1.
Recall Verification Setup File #13.
2.
Connect the Modulation Analyzer to the GEN Connector.
3.
Set the Modulation Analyzer to measure FM with the 3 kHz LP Filter selected.
4.
Connect the Audio Analyzer to the Modulation Analyzer Modulation Output Connector.
5.
Verify the modulation distortion is <1% on the Audio Analyzer.
6.
•
If reading is correct, go to Step 6.
•
If reading is out of tolerance, this indicates a hardware failure in the 2975.
Probable source of failure: Multifunction I/O PCB Assy or Generator Assy. Return
the 2975 to Aeroflex for repair.
Perform one of the following:
•
If this procedure is performed as a stand-alone procedure, perform the following key
sequences to reset Factory Default Settings, then remove power from the Unit and
disconnect the test equipment.
Press MODE Key, 7 Key, 1 Key to display the Configuration Screen.
Press 10 MHz REFERENCE to select Internal reference.
Press FACTORY DEFAULT (F2) to restore the Unit to Factory Defaults.
•
If this procedure is performed as part of a complete Verification, proceed with the
next Verification Procedure.
2-17
2-4-15
GENERATOR AM MODULATION ACCURACY
PREREQUISITES:
2-4-1
2-4-6
EQUIPMENT REQUIRED:
Modulation Analyzer
STEP
Initial Setup
Generator AM Residual
PROCEDURE
1.
Recall Verification Setup File #14.
2.
Connect the Modulation Analyzer to the GEN Connector.
3.
Set the Modulation Analyzer to measure AM.
4.
Record the AM Modulation shown on the Modulation Analyzer.
5.
Subtract the reading recorded in para 2-4-11 from the reading recorded in Step 4.
Verify the AM Modulation is 30% (±5%).
6.
•
If reading is correct, go to Step 6.
•
If reading is out of tolerance, this indicates a hardware failure in the 2975.
Probable source of failure: Multifunction I/O PCB Assy or Generator Assy. Return
the 2975 to Aeroflex for repair.
Perform one of the following:
•
If this procedure is performed as a stand-alone procedure, perform the following key
sequences to reset Factory Default Settings, then remove power from the Unit and
disconnect the test equipment.
Press MODE Key, 7 Key, 1 Key to display the Configuration Screen.
Press 10 MHz REFERENCE to select Internal reference.
Press FACTORY DEFAULT (F2) to restore the Unit to Factory Defaults.
•
If this procedure is performed as part of a complete Verification, proceed with the
next Verification Procedure.
2-18
2-4-16
RF ERROR METER ACCURACY
PREREQUISITES:
2-4-1
Initial Setup
EQUIPMENT REQUIRED:
RF Generator
STEP
PROCEDURE
1.
Recall Verification Setup File #15.
2.
Connect the RF Generator to the T/R Connector.
3.
Set the RF Generator to the following settings and verify the following readings on the
2975 RF Error Meter:
4.
RF GENERATOR SETTINGS
2975 RF ERROR METER
1000.01 MHz at -20 dBm
+10000 Hz (±1 Hz)
999.99 MHz at -20 dBm
-10000 Hz (±1 Hz)
•
If all readings are correct, go to Step 4.
•
If reading is out of tolerance, this indicates a hardware failure in the 2975.
Probable source of failure: Multifunction I/O PCB Assy or Receiver Assy. Return the
2975 to Aeroflex for repair.
Perform one of the following:
•
If this procedure is performed as a stand-alone procedure, perform the following key
sequences to reset Factory Default Settings, then remove power from the Unit and
disconnect the test equipment.
Press MODE Key, 7 Key, 1 Key to display the Configuration Screen.
Press 10 MHz REFERENCE to select Internal reference.
Press FACTORY DEFAULT (F2) to restore the Unit to Factory Defaults.
•
If this procedure is performed as part of a complete Verification, proceed with the
next Verification Procedure.
2-19
2-4-17
AF METER ACCURACY
PREREQUISITES:
2-4-1
EQUIPMENT REQUIRED:
RF Generator
STEP
Initial Setup
PROCEDURE
1.
Recall Verification Setup File #16.
2.
Connect the RF Generator to the ANT Connector.
3.
Set the RF Generator to 100 MHz at -10.0 dBm.
4.
Set the RF Generator to output a 6 kHz FM signal at a 1 kHz rate.
5.
Verify 1000 Hz (±1 Hz) on the 2975 AF Counter.
6.
•
If reading is correct, go to Step 6.
•
If reading is out of tolerance, this indicates a hardware failure in the 2975.
Probable source of failure: Multifunction I/O PCB Assy or Receiver Assy. Return the
2975 to Aeroflex for repair.
Perform one of the following:
•
If this procedure is performed as a stand-alone procedure, perform the following key
sequences to reset Factory Default Settings, then remove power from the Unit and
disconnect the test equipment.
Press MODE Key, 7 Key, 1 Key to display the Configuration Screen.
Press 10 MHz REFERENCE to select Internal reference.
Press FACTORY DEFAULT (F2) to restore the Unit to Factory Defaults.
•
If this procedure is performed as part of a complete Verification, proceed with the
next Verification Procedure.
2-20
2-4-18
FM DEVIATION METER ACCURACY
PREREQUISITES:
2-4-1
EQUIPMENT REQUIRED:
RF Generator
STEP
Initial Setup
PROCEDURE
1.
Recall Verification Setup File #17.
2.
Connect the RF Generator to the ANT Connector.
3.
Set the RF Generator to 100 MHz at -10.0 dBm.
4.
Record the level on the 2975 Deviation Meter.
5.
Set the RF Generator to output a 10 kHz FM signal at a 1 kHz rate.
6.
Record the level on the 2975 Deviation Meter.
7.
Subtract the deviation level in Step 4 from the deviation level in Step 6 and verify the
deviation level is 10 kHz (±0.52 kHz).
8.
•
If reading is correct, go to Step 8.
•
If reading is out of tolerance, this indicates a hardware failure in the 2975.
Probable source of failure: Multifunction I/O PCB Assy or Receiver Assy. Return the
2975 to Aeroflex for repair.
Perform one of the following:
•
If this procedure is performed as a stand-alone procedure, perform the following key
sequences to reset Factory Default Settings, then remove power from the Unit and
disconnect the test equipment.
Press MODE Key, 7 Key, 1 Key to display the Configuration Screen.
Press 10 MHz REFERENCE to select Internal reference.
Press FACTORY DEFAULT (F2) to restore the Unit to Factory Defaults.
•
If this procedure is performed as part of a complete Verification, proceed with the
next Verification Procedure.
2-21
2-4-19
AM MODUL ATION METER ACCURACY
PREREQUISITES:
2-4-1
EQUIPMENT REQUIRED:
RF Generator
STEP
Initial Setup
PROCEDURE
1.
Recall Verification Setup File #18.
2.
Connect the RF Generator to the ANT Connector.
3.
Set the RF Generator to 100 MHz at -20.0 dBm.
4.
Record the level on the 2975 Modulation Meter.
5.
Set the RF Generator to output an AM signal at 50% depth.
6.
Record the level on the 2975 Modulation Meter.
7.
Subtract the modulation level in Step 4 from the modulation level in Step 6 and verify
the modulation level is 50% (±5%).
8.
•
If reading is correct, go to Step 8.
•
If reading is out of tolerance, this indicates a hardware failure in the 2975.
Probable source of failure: Multifunction I/O PCB Assy or Receiver Assy. Return the
2975 to Aeroflex for repair.
Perform one of the following:
•
If this procedure is performed as a stand-alone procedure, perform the following key
sequences to reset Factory Default Settings, then remove power from the Unit and
disconnect the test equipment.
Press MODE Key, 7 Key, 1 Key to display the Configuration Screen.
Press 10 MHz REFERENCE to select Internal reference.
Press FACTORY DEFAULT (F2) to restore the Unit to Factory Defaults.
•
If this procedure is performed as part of a complete Verification, proceed with the
next Verification Procedure.
2-22
2-4-20
ANALYZ ER FREQ UENCY AND SPAN ACCURACY
PREREQUISITES:
2-4-1
EQUIPMENT REQUIRED:
RF Generator
STEP
Initial Setup
PROCEDURE
1.
Recall Verification Setup File #19.
2.
Connect the RF Generator to the ANT Connector.
3.
Set the RF Generator to 1.5 GHz at -20.0 dBm.
4.
Measure the 20 dB bandwidth of the displayed signal; calculate the center frequency
and record the peak frequency of the displayed signal.
5.
Subtract 1.5 GHz from the peak frequency in Step 4 and verify the peak frequency is
0 kHz (±2.5 kHz).
•
If reading is correct, go to Step 6.
•
If reading is out of tolerance, this indicates a hardware failure in the 2975.
Probable source of failure: IF/Video PCB Assy or Receiver Assy. Return the 2975
to Aeroflex for repair.
6.
Adjust the RF Generator frequency until the -30 dBm point on the left side of the signal
response rests on the 1st major division from the left of the display.
7.
Increase the RF Generator frequency 80 kHz and verify the -30 dBm point is within 1/2
minor division of the 9th major division from the left of the display.
8.
•
If reading is correct, go to Step 8.
•
If reading is out of tolerance, this indicates a hardware failure in the 2975.
Probable source of failure: IF/Video PCB Assy or Receiver Assy. Return the 2975
to Aeroflex for repair.
Perform one of the following:
•
If this procedure is performed as a stand-alone procedure, perform the following key
sequences to reset Factory Default Settings, then remove power from the Unit and
disconnect the test equipment.
Press MODE Key, 7 Key, 1 Key to display the Configuration Screen.
Press 10 MHz REFERENCE to select Internal reference.
Press FACTORY DEFAULT (F2) to restore the Unit to Factory Defaults.
•
If this procedure is performed as part of a complete Verification, proceed with the
next Verification Procedure.
2-23
2-4-21
ANALYZ ER BANDWIDTH SWITCHING ERROR
PREREQUISITES:
2-4-1
EQUIPMENT REQUIRED:
RF Generator
STEP
Initial Setup
PROCEDURE
1.
Recall Verification Setup File #20.
2.
Press NORMAL (F5) on the 2975 Spectrum Analyzer to normalize the 2975 Spectrum
Analyzer. (This may take a few minutes.)
3.
Connect the RF Generator to the ANT Connector.
4.
Set the RF Generator to 500 MHz at -30.0 dBm.
5.
Set the AUTO/MAN Field to MAN (to switch the 2975 Spectrum Analyzer to Manual
Mode.
6.
Using the following settings, record the peak level of the trace data for each RBW Filter
and verify the absolute difference between the maximum and minimum levels is ≤2 dB:
7.
SPAN
RBW
VBW
5 kHz
50 kHz
500 kHz
1 MHz
5 MHz
20 MHz
300 Hz
3 kHz
30 kHz
60 kHz
300 kHz
6 MHz
100 Hz
100 Hz
3 kHz
3 kHz
3 kHz
3 kHz
•
If all readings are correct, go to Step 7.
•
If reading is out of tolerance, this indicates a hardware failure in the 2975.
Probable source of failure: IF/Video PCB Assy or Receiver Assy. Return the 2975
to Aeroflex for repair.
Perform one of the following:
•
If this procedure is performed as a stand-alone procedure, perform the following key
sequences to reset Factory Default Settings, then remove power from the Unit and
disconnect the test equipment.
Press MODE Key, 7 Key, 1 Key to display the Configuration Screen.
Press 10 MHz REFERENCE to select Internal reference.
Press FACTORY DEFAULT (F2) to restore the Unit to Factory Defaults.
•
If this procedure is performed as part of a complete Verification, proceed with the
next Verification Procedure.
2-24
2-4-22
OSCILLOSCOPE AMPLITUDE ACCURACY
PREREQUISITES:
2-4-1
Initial Setup
EQUIPMENT REQUIRED:
A r b i t r a r y W a ve f o r m G e n e r a t o r
STEP
PROCEDURE
1.
Recall Verification Setup File #21.
2.
C o n n e c t t h e A r b i t r a r y W a v e f o r m G e n e r a t o r t o t h e S C O P E C H 1 C o n n e ct o r .
3.
S e t t h e A r b i t r a r y W a v e f o r m G e n e r a t o r f r e q u e n cy t o 1 kH z S i n e w a ve .
4.
U s i n g t h e f o l l o w i n g s e t t i n g s , v e r i f y t h e p e a k t o p e a k l e v e l o n t h e 2 9 7 5 O s c i l l o s co p e i s
b e t w e e n 7 t o 9 m a j o r d i v i s i o n s. S e l e ct V P O S ( V e r t i ca l P o si t i o n ) a n d u se t h e S p i n n e r t o
position the no-signal trace on the center graticule.
ARBITRARY WAVEFORM
GENERATOR LEVEL
2975 OSCILLOSCOPE
VOLTS/DIV
160 mVp-p
400 mVp-p
800 mVp-p
1.6 Vp-p
4 Vp-p
8 Vp-p
16 Vp-p
0.02 V/Div
0.05 V/Div
0.1 V/Div
0.2 V/Div
0.5 V/Div
1.0 V/Div
2.0 V/Div
•
I f a l l r e a d i n g s a r e c o r r e ct , g o t o S t e p 5 .
•
If reading is out of tolerance, this indicates a hardware failure in the 2975.
P r o b a b l e s o u r c e o f f a i l u r e : M u l t i f u n ct i o n I / O P C B A s s y . R e t u r n t h e 2 9 7 5 t o A e r o f l e x
for repair.
5.
D i s c o n n e c t t h e A r b i t r a r y W a ve f o r m G e n e r a t o r f r o m t h e S C O P E C H 1 C o n n e ct o r .
C o n n e c t t h e A r b i t r a r y W a v e f o r m G e n e r a t o r t o t h e S C O P E C H 2 C o n n e ct o r .
6.
S e t t h e S O U R C E F i e l d o n t h e 2 9 7 5 O sci l l o sco p e t o C H 2 .
2-25
STEP
7.
8.
PROCEDURE
Using the following settings, verify the peak to peak level on the 2975 Oscilloscope is
between 7 to 9 major divisions. Select VPOS (Vertical Position) and use the Spinner to
position the no-signal trace on the center graticule.
FUNCTION GENERATOR
LEVEL
2975 OSCILLOSCOPE
VOLTS/DIV
160 mVp-p
400 mVp-p
800 mVp-p
1.6 Vp-p
4 Vp-p
8 Vp-p
16 Vp-p
0.02 V/Div
0.05 V/Div
0.1 V/Div
0.2 V/Div
0.5 V/Div
1.0 V/Div
2.0 V/Div
•
If all readings are correct, go to Step 8.
•
If reading is out of tolerance, this indicates a hardware failure in the 2975.
Probable source of failure: Multifunction I/O PCB Assy. Return the 2975 to Aeroflex
for repair.
Perform one of the following:
•
If this procedure is performed as a stand-alone procedure, perform the following key
sequences to reset Factory Default Settings, then remove power from the Unit and
disconnect the test equipment.
Press MODE Key, 7 Key, 1 Key to display the Configuration Screen.
Press 10 MHz REFERENCE to select Internal reference.
Press FACTORY DEFAULT (F2) to restore the Unit to Factory Defaults.
•
If this procedure is performed as part of a complete Verification, proceed with the
next Verification Procedure.
2-26
2-4-23
DIGITAL VO LTMETER DC ACCURACY
PREREQUISITES:
2-4-1
EQUIPMENT REQUIRED:
Voltage Calibrator
STEP
Initial Setup
PROCEDURE
1.
Recall Verification Setup File #22.
2.
Connect the Voltage Calibrator to the DVM Connector.
3.
Set the Voltage Calibrator to 200 mV.
4.
Verify 200 mV (±10 mV) on the 2975 Digital Voltmeter.
5.
•
If reading is correct, go to Step 5.
•
If reading is out of tolerance, this indicates a hardware failure in the 2975.
Probable source of failure: Multifunction I/O PCB Assy. Return the 2975 to Aeroflex
for repair.
Perform one of the following:
•
If this procedure is performed as a stand-alone procedure, perform the following key
sequences to reset Factory Default Settings, then remove power from the Unit and
disconnect the test equipment.
Press MODE Key, 7 Key, 1 Key to display the Configuration Screen.
Press 10 MHz REFERENCE to select Internal reference.
Press FACTORY DEFAULT (F2) to restore the Unit to Factory Defaults.
•
If this procedure is performed as part of a complete Verification, proceed with the
next Verification Procedure.
2-27
2-4-24
DIGITAL VO LTMETER AC ACCURACY
PREREQUISITES:
2-4-1
EQUIPMENT REQUIRED:
Voltage Calibrator
STEP
Initial Setup
PROCEDURE
1.
Recall Verification Setup File #23.
2.
Connect the Voltage Calibrator to the DVM Connector.
3.
Set the Voltage Calibrator to 200 mV.
4.
Set the Voltage Calibrator to the following levels and verify 200 mV (±30 mV) on the
2975 Digital Voltmeter.
50 Hz
100 Hz
1 kHz
10 kHz
20 kHz
5.
•
If all readings are correct, go to Step 5.
•
If reading is out of tolerance, this indicates a hardware failure in the 2975.
Probable source of failure: Multifunction I/O PCB Assy. Return the 2975 to Aeroflex
for repair.
Perform one of the following:
•
If this procedure is performed as a stand-alone procedure, perform the following key
sequences to reset Factory Default Settings, then remove power from the Unit and
disconnect the test equipment.
Press MODE Key, 7 Key, 1 Key to display the Configuration Screen.
Press 10 MHz REFERENCE to select Internal reference.
Press FACTORY DEFAULT (F2) to restore the Unit to Factory Defaults.
•
If this procedure is performed as part of a complete Verification, proceed with the
next Verification Procedure.
2-28
2- 4- 25
FUNCT IO N G ENERATO R L EVEL ACCURACY
PREREQUISITES:
2-4-1
EQUIPMENT REQUIRED:
Microphone Adapter
Digital Multimeter
10 kΩ Load
STEP
Initial Setup
PROCEDURE
1.
Recall Verification Setup File #24.
2.
Connect the Microphone Adapter to the MIC Connector and AUDIO I/O Connector.
3.
Connect the Digital Multimeter, through a 10 kΩ Load, to the Microphone Adapter
AUDIO OUT 1 Connector.
4.
Set the Digital Multimeter to measure AC Volts.
5.
Verify the level is 7.070 Vrms (±350 mVrms) on the Digital Multimeter.
6.
•
If reading is correct, go to Step 6.
•
If reading is out of tolerance, this indicates a hardware failure in the 2975.
Probable source of failure: Front Panel Audio PCB Assy. Return the 2975 to
Aeroflex for repair.
Perform one of the following:
•
If this procedure is performed as a stand-alone procedure, perform the following key
sequences to reset Factory Default Settings, then remove power from the Unit and
disconnect the test equipment.
Press MODE Key, 7 Key, 1 Key to display the Configuration Screen.
Press 10 MHz REFERENCE to select Internal reference.
Press FACTORY DEFAULT (F2) to restore the Unit to Factory Defaults.
•
If this procedure is performed as part of a complete Verification, proceed with the
next Verification Procedure.
2-29
2-4-26
FUNCTION GENERATOR FREQ UENCY ACCURACY
PREREQUISITES:
2-4-1
EQUIPMENT REQUIRED:
Microphone Adapter
Universal Counter
10 kΩ Load
STEP
Initial Setup
PROCEDURE
1.
Recall Verification Setup File #25.
2.
Connect the Microphone Adapter to the MIC Connector and AUDIO I/O Connector.
3.
Connect the Universal Counter, through a 10 kΩ Load, to the Microphone Adapter
AUDIO OUT 1 Connector.
4.
Verify the frequency is 5000 Hz (±1 Hz) on the Universal Counter.
5.
•
If reading is correct, go to Step 5.
•
If reading is out of tolerance, this indicates a hardware failure in the 2975.
Probable source of failure: Front Panel Audio PCB Assy. Return the 2975 to
Aeroflex for repair.
Perform one of the following:
•
If this procedure is performed as a stand-alone procedure, perform the following key
sequences to reset Factory Default Settings, then remove power from the Unit and
disconnect the test equipment.
Press MODE Key, 7 Key, 1 Key to display the Configuration Screen.
Press 10 MHz REFERENCE to select Internal reference.
Press FACTORY DEFAULT (F2) to restore the Unit to Factory Defaults.
•
If this procedure is performed as part of a complete Verification, proceed with the
next Verification Procedure.
2-30
2-4-27
FUNCTION GENERATOR TOTAL HARMONIC DIST ORTION
PREREQUISITES:
2-4-1
EQUIPMENT REQUIRED:
Microphone Adapter
Audio Analyzer
10 kΩ Load
STEP
Initial Setup
PROCEDURE
1.
Recall Verification Setup File #26.
2.
Connect the Microphone Adapter to the MIC Connector and AUDIO I/O Connector.
3.
Connect the Audio Analyzer Audio Input, through a 10 kΩ Load, to the Microphone
Adapter AUDIO OUT 1 Connector.
4.
Verify the total harmonic output is <0.5%.
5.
•
If reading is correct, go to Step 5.
•
If reading is out of tolerance, this indicates a hardware failure in the 2975.
Probable source of failure: Front Panel Audio PCB Assy. Return the 2975 to
Aeroflex for repair.
Perform one of the following:
•
If this procedure is performed as a stand-alone procedure, perform the following key
sequences to reset Factory Default Settings, then remove power from the Unit and
disconnect the test equipment.
Press MODE Key, 7 Key, 1 Key to display the Configuration Screen.
Press 10 MHz REFERENCE to select Internal reference.
Press FACTORY DEFAULT (F2) to restore the Unit to Factory Defaults.
•
If this procedure is performed as part of a complete Verification, proceed with the
next Verification Procedure.
2-31
2-4-28
AF COUNTER ACCURACY
PREREQUISITES:
2-4-1
EQUIPMENT REQUIRED:
Microphone Adapter
Arbitrary Waveform Generator
STEP
Initial Setup
PROCEDURE
1.
Recall Verification Setup File #27.
2.
Connect the Microphone Adapter to the MIC Connector and AUDIO I/O Connector.
3.
Connect the Arbitrary Waveform Generator to the Microphone Adapter AUDIO IN
Connector.
4.
Set the Arbitrary Waveform Generator to 5 Vp-p at 5000 Hz.
5.
Verify the frequency is 5000 Hz (±1 Hz) on the 2975 AF Counter.
6.
•
If reading is correct, go to Step 6.
•
If reading is out of tolerance, this indicates a hardware failure in the 2975.
Probable source of failure: Front Panel Audio PCB Assy. Return the 2975 to
Aeroflex for repair.
Perform one of the following:
•
If this procedure is performed as a stand-alone procedure, perform the following key
sequences to reset Factory Default Settings, then remove power from the Unit and
disconnect the test equipment.
Press MODE Key, 7 Key, 1 Key to display the Configuration Screen.
Press 10 MHz REFERENCE to select Internal reference.
Press FACTORY DEFAULT (F2) to restore the Unit to Factory Defaults.
•
If this procedure is performed as part of a complete Verification, proceed with the
next Verification Procedure.
2-32
2-4-29
SINAD/DIST ORTION METER ACCURACY
PREREQUISITES:
2-4-1
EQUIPMENT REQUIRED:
Microphone Adapter
Arbitrary Waveform Generator
NOTE:
STEP
Initial Setup
If an Arbitrary Waveform Generator is used other than the model specified In
Appendix B, an residual measurement needs to be accomplished prior to verifying
the Distortion level in Step 7.
PROCEDURE
1.
Recall Verification Setup File #28.
2.
Connect the Microphone Adapter to the MIC Connector and AUDIO I/O Connector.
3.
Connect the Arbitrary Waveform Generator to the Microphone Adapter AUDIO IN
Connector.
4.
Set the Arbitrary Waveform Generator for a 1 kHz sinewave carrier at 10.0 Vp-p. Set
the AM Modulation on the Arbitrary Waveform Generator to 37% at a 1500.0 Hz rate.
5.
Verify the level is 12 dB (±1.1 dB) on the 2975 SINAD Meter.
•
If reading is correct, go to Step 6.
•
If reading is out of tolerance, this indicates a hardware failure in the 2975.
Probable source of failure: Front Panel Audio PCB Assy. Return the 2975 to
Aeroflex for repair.
6.
Switch OFF the AM Modulation on the Arbitrary Waveform Generator and record the
Residual Distortion on the 2975 Distortion Meter.
7.
Set the AM Modulation on the Arbitrary Waveform Generator to 7% at a 1500.0 Hz rate.
8.
Subtract the Residual Distortion reading in Step 6 from the level on the Arbitrary
Waveform Generator and verify the level is 5% (±0.09%) on the 2975 Distortion Meter.
9.
•
If reading is correct, go to Step 9.
•
If reading is out of tolerance, this indicates a hardware failure in the 2975.
Probable source of failure: Front Panel Audio PCB Assy. Return the 2975 to
Aeroflex for repair.
If this procedure is performed as a stand-alone procedure or as part of a complete
Verification, perform the following key sequence to reset Factory Default Settings, then
remove power from the Unit and disconnect the test equipment.
Press MODE Key, 7 Key, 1 Key to display the Configuration Screen.
Press 10 MHz REFERENCE to select Internal reference.
Press FACTORY DEFAULT (F2) to restore the Unit to Factory Defaults.
2-33
2-5
VERIFICATION DATA SHEET
TECHNICIAN:
DATE:
2975 S/N:
STEP
DATA
RESULT
GENERATOR OUTPUT FREQUENCY (2-4-2)
4.
1 GHz (±10 Hz)
_______
GENERATOR OUTPUT POWER (2-4-3)
4.
+10 dBm
0 dBm
-10 dBm
-20 dBm
-30 dBm
-40 dBm
-50 dBm
-60 dBm
+10 dBm (±1.5 dB)
0 dBm (±1.5 dB)
-10 dBm (±1.5 dB)
-20 dBm (±1.5 dB)
-30 dBm (±1.5 dB)
-40 dBm (±1.5 dB)
-50 dBm (±1.5 dB)
-60 dBm (±1.5 dB)
_______
_______
_______
_______
_______
_______
_______
_______
GENERATOR LEVEL FLATNESS (2-4-4)
3.
170 MHz
220 MHz
270 MHz
320 MHz
370 MHz
420 MHz
470 MHz
520 MHz
570 MHz
620 MHz
670 MHz
720 MHz
770 MHz
820 MHz
870 MHz
920 MHz
970 MHz
1020 MHz
1070 MHz
1120 MHz
1170 MHz
1220 MHz
1270 MHz
1320 MHz
1370 MHz
1420 MHz
0 dBm (±1 dB)
0 dBm (±1 dB)
0 dBm (±1 dB)
0 dBm (±1 dB)
0 dBm (±1 dB)
0 dBm (±1 dB)
0 dBm (±1 dB)
0 dBm (±1 dB)
0 dBm (±1 dB)
0 dBm (±1 dB)
0 dBm (±1 dB)
0 dBm (±1 dB)
0 dBm (±1 dB)
0 dBm (±1 dB)
0 dBm (±1 dB)
0 dBm (±1 dB)
0 dBm (±1 dB)
0 dBm (±1 dB)
0 dBm (±1 dB)
0 dBm (±1 dB)
0 dBm (±1 dB)
0 dBm (±1 dB)
0 dBm (±1 dB)
0 dBm (±1 dB)
0 dBm (±1 dB)
0 dBm (±1 dB)
_______
_______
_______
_______
_______
_______
_______
_______
_______
_______
_______
_______
_______
_______
_______
_______
_______
_______
_______
_______
_______
_______
_______
_______
_______
_______
2-34
STEP
DATA
RESULT
G E N E R A T O R L E V E L F L A T NE S S ( 2 - 4 - 4 ) ( c o n t )
3.
1470 MHz
1520 MHz
1570 MHz
1620 MHz
1670 MHz
1720 MHz
1770 MHz
1820 MHz
1870 MHz
1920 MHz
1970 MHz
2020 MHz
2070 MHz
2120 MHz
2170 MHz
2220 MHz
2270 MHz
2320 MHz
2370 MHz
2420 MHz
2470 MHz
2520 MHz
2570 MHz
2620 MHz
2670 MHz
2700 MHz
0 dBm (±1 dB)
0 dBm (±1 dB)
0 dBm (±1 dB)
0 dBm (±1 dB)
0 dBm (±1 dB)
0 dBm (±1 dB)
0 dBm (±1 dB)
0 dBm (±1 dB)
0 dBm (±1 dB)
0 dBm (±1 dB)
0 dBm (±1 dB)
0 dBm (±1 dB)
0 dBm (±1 dB)
0 dBm (±1 dB)
0 dBm (±1 dB)
0 dBm (±1 dB)
0 dBm (±1 dB)
0 dBm (±1 dB)
0 dBm (±1 dB)
0 dBm (±1 dB)
0 dBm (±1 dB)
0 dBm (±1 dB)
0 dBm (±1 dB)
0 dBm (±1 dB)
0 dBm (±1 dB)
0 dBm (±1 dB)
_______
_______
_______
_______
_______
_______
_______
_______
_______
_______
_______
_______
_______
_______
_______
_______
_______
_______
_______
_______
_______
_______
_______
_______
_______
_______
GENERATOR T/R POWER LEVEL ACCURACY (2-4-5)
3.
-30 dBm
-40 dBm
-50 dBm
-60 dBm
-30 dBm (±1 dB)
-40 dBm (±1 dB)
-50 dBm (±1 dB)
-60 dBm (±1 dB)
_______
_______
_______
_______
GENERATOR T/R POWER LEVEL FLATNESS (2-4-6)
3.
50 MHz
100 MHz
150 MHz
200 MHz
250 MHz
300 MHz
350 MHz
400 MHz
450 MHz
500 MHz
550 MHz
600 MHz
650 MHz
700 MHz
750 MHz
800 MHz
-30 dBm (±1 dB)
-30 dBm (±1 dB)
-30 dBm (±1 dB)
-30 dBm (±1 dB)
-30 dBm (±1 dB)
-30 dBm (±1 dB)
-30 dBm (±1 dB)
-30 dBm (±1 dB)
-30 dBm (±1 dB)
-30 dBm (±1 dB)
-30 dBm (±1 dB)
-30 dBm (±1 dB)
-30 dBm (±1 dB)
-30 dBm (±1 dB)
-30 dBm (±1 dB)
-30 dBm (±1 dB)
_______
_______
_______
_______
_______
_______
_______
_______
_______
_______
_______
_______
_______
_______
_______
_______
2-35
STEP
DATA
RESULT
GENERATOR T/R POWER LEVEL FLATNESS (2-4-6) (cont)
3.
850 MHz
900 MHz
950 MHz
1000 MHz
1050 MHz
1100 MHz
1150 MHz
1200 MHz
1250 MHz
1300 MHz
1350 MHz
1400 MHz
1450 MHz
1500 MHz
1550 MHz
1600 MHz
1650 MHz
1700 MHz
1750 MHz
1800 MHz
1850 MHz
1900 MHz
1950 MHz
2000 MHz
2050 MHz
2100 MHz
2150 MHz
2200 MHz
2250 MHz
2300 MHz
2350 MHz
2400 MHz
2450 MHz
2500 MHz
2550 MHz
2600 MHz
2650 MHz
2700 MHz
-30 dBm (±1 dB)
-30 dBm (±1 dB)
-30 dBm (±1 dB)
-30 dBm (±1 dB)
-30 dBm (±1 dB)
-30 dBm (±1 dB)
-30 dBm (±1 dB)
-30 dBm (±1 dB)
-30 dBm (±1 dB)
-30 dBm (±1 dB)
-30 dBm (±1 dB)
-30 dBm (±1 dB)
-30 dBm (±1 dB)
-30 dBm (±1 dB)
-30 dBm (±1 dB)
-30 dBm (±1 dB)
-30 dBm (±1 dB)
-30 dBm (±1 dB)
-30 dBm (±1 dB)
-30 dBm (±1 dB)
-30 dBm (±1 dB)
-30 dBm (±1 dB)
-30 dBm (±1 dB)
-30 dBm (±1 dB)
-30 dBm (±1 dB)
-30 dBm (±1 dB)
-30 dBm (±1 dB)
-30 dBm (±1 dB)
-30 dBm (±1 dB)
-30 dBm (±1 dB)
-30 dBm (±1 dB)
-30 dBm (±1 dB)
-30 dBm (±1 dB)
-30 dBm (±1 dB)
-30 dBm (±1 dB)
-30 dBm (±1 dB)
-30 dBm (±1 dB)
-30 dBm (±1 dB)
_______
_______
_______
_______
_______
_______
_______
_______
_______
_______
_______
_______
_______
_______
_______
_______
_______
_______
_______
_______
_______
_______
_______
_______
_______
_______
_______
_______
_______
_______
_______
_______
_______
_______
_______
_______
_______
_______
RF POWER METER ACCURACY (2-4-7)
5.
10.5 dBm (±1.05 dB)
_______
RSSI METER ACCURACY (2-4-8)
4.
-70 dBm
-60 dBm
-50 dBm
-40 dBm
-30 dBm
-20 dBm
-70.0 dBm (±2.5 dB)
-60.0 dBm (±2.5 dB)
-50.0 dBm (±2.5 dB)
-40.0 dBm (±2.5 dB)
-30.0 dBm (±2.5 dB)
-20.0 dBm (±2.5 dB)
2-36
_______
_______
_______
_______
_______
_______
STEP
DATA
RESULT
ANALYZER LEVEL ACCURACY (2-4-9)
5.
1 MHz
50 MHz
100 MHz
150 MHz
200 MHz
250 MHz
300 MHz
350 MHz
400 MHz
450 MHz
500 MHz
550 MHz
600 MHz
650 MHz
700 MHz
750 MHz
800 MHz
850 MHz
900 MHz
950 MHz
1000 MHz
1050 MHz
1100 MHz
1150 MHz
1200 MHz
1250 MHz
1300 MHz
1350 MHz
1400 MHz
1450 MHz
1500 MHz
1550 MHz
1600 MHz
1650 MHz
1700 MHz
1750 MHz
1800 MHz
1850 MHz
1900 MHz
1950 MHz
2000 MHz
2050 MHz
2100 MHz
2150 MHz
2200 MHz
2250 MHz
2300 MHz
2350 MHz
2400 MHz
2450 MHz
-30.0 dBm (±2 dB)
-30.0 dBm (±2 dB)
-30.0 dBm (±2 dB)
-30.0 dBm (±2 dB)
-30.0 dBm (±2 dB)
-30.0 dBm (±2 dB)
-30.0 dBm (±2 dB)
-30.0 dBm (±2 dB)
-30.0 dBm (±2 dB)
-30.0 dBm (±2 dB)
-30.0 dBm (±2 dB)
-30.0 dBm (±2 dB)
-30.0 dBm (±2 dB)
-30.0 dBm (±2 dB)
-30.0 dBm (±2 dB)
-30.0 dBm (±2 dB)
-30.0 dBm (±2 dB)
-30.0 dBm (±2 dB)
-30.0 dBm (±2 dB)
-30.0 dBm (±2 dB)
-30.0 dBm (±2 dB)
-30.0 dBm (±2 dB)
-30.0 dBm (±2 dB)
-30.0 dBm (±2 dB)
-30.0 dBm (±2 dB)
-30.0 dBm (±2 dB)
-30.0 dBm (±2 dB)
-30.0 dBm (±2 dB)
-30.0 dBm (±2 dB)
-30.0 dBm (±2 dB)
-30.0 dBm (±2 dB)
-30.0 dBm (±2 dB)
-30.0 dBm (±2 dB)
-30.0 dBm (±2 dB)
-30.0 dBm (±2 dB)
-30.0 dBm (±2 dB)
-30.0 dBm (±2 dB)
-30.0 dBm (±2 dB)
-30.0 dBm (±2 dB)
-30.0 dBm (±2 dB)
-30.0 dBm (±2 dB)
-30.0 dBm (±2 dB)
-30.0 dBm (±2 dB)
-30.0 dBm (±2 dB)
-30.0 dBm (±2 dB)
-30.0 dBm (±2 dB)
-30.0 dBm (±2 dB)
-30.0 dBm (±2 dB)
-30.0 dBm (±2 dB)
-30.0 dBm (±2 dB)
_______
_______
_______
_______
_______
_______
_______
_______
_______
_______
_______
_______
_______
_______
_______
_______
_______
_______
_______
_______
_______
_______
_______
_______
_______
_______
_______
_______
_______
_______
_______
_______
_______
_______
_______
_______
_______
_______
_______
_______
_______
_______
_______
_______
_______
_______
_______
_______
_______
_______
2-37
STEP
DATA
RESULT
ANALYZER LEVEL ACCURACY (2-4-9) (cont)
5.
2500 MHz
2550 MHz
2600 MHz
2650 MHz
2700 MHz
-30.0 dBm (±2 dB)
-30.0 dBm (±2 dB)
-30.0 dBm (±2 dB)
-30.0 dBm (±2 dB)
-30.0 dBm (±2 dB)
_______
_______
_______
_______
_______
GENERATOR FM RESIDUAL (2-4-10)
4.
<15 Hz rms
_______
GENERATOR AM RESIDUAL (2-4-11)
4.
<0.1%
_______
GENERATOR FM DEVIATION ACCURACY (2-4-12)
4.
Record FM deviation
_______
5.
Subtract reading in para 2-4-10 from reading in Step 4
_______
FM deviation is 10 kHz (±0.31 kHz)
_______
GENERATOR FM MODULATION RATE (2-4-13)
4.
50.0 Hz
300.0 Hz
10000.0 Hz
6 kHz (±0.18 kHz)
6 kHz (±0.18 kHz)
6 kHz (±0.18 kHz)
_______
_______
_______
GENERATOR FM MODULATION DISTORTION (2-4-14)
5.
Modulation Distortion is <1%
_______
GENERATOR AM MODULATION ACCURACY (2-4-15)
4.
Record AM Modulation
_______
5.
Subtract reading in para 2-4-11 from reading in Step 4
_______
AM Modulation is 30% (±5%)
_______
RF ERROR METER ACCURACY (2-4-16)
3.
1000.01 MHz
999.99 MHz
+10000 Hz (±1 Hz)
-10000 Hz (±1 Hz)
_______
_______
AF METER ACCURACY (2-4-17)
5.
1000 Hz (±1 Hz)
_______
FM DEVIATION METER ACCURACY (2-4-18)
4.
Record deviation level
_______
6.
Record deviation level
_______
7.
Subtract Step 4 from Step 6
_______
D e vi a t i o n l e ve l i s 1 0 kH z ( ± 0 . 5 2 k H z )
_______
2-38
STEP
DATA
RESULT
AM MODULATION METER ACCURACY (2-4-19)
4.
Record modulation level
________
6.
Record modulation level
________
7.
Subtract Step 4 from Step 6
________
Modulation level is 50% (±5%)
________
ANALYZER FREQUENCY AND SPAN ACCURACY (2-4-20)
4.
5.
7.
Measure 20 dB bandwidth of displayed signal
________
Calculate center frequency
________
Record peak frequency of displayed signal
________
Subtract 1.5 GHz from peak frequency in Step 4
________
Peak frequency is 0 kHz (±2.5 kHz)
________
-30 dBm point is within 1/2 minor division of 9th major division from left
________
ANALYZER BANDWIDTH SWITCHING ERROR (2-4-21)
6.
SPAN
RBW
VBW
TOLERANCE
5 kHz
50 kHz
500 kHz
1 MHz
5 MHz
20 MHz
300 Hz
3 kHz
30 kHz
60 kHz
300 kHz
6 MHz
100 Hz
100 Hz
3 kHz
3 kHz
3 kHz
3 kHz
≤2 dB
≤2 dB
≤2 dB
≤2 dB
≤2 dB
≤2 dB
________
________
________
________
________
________
OSCILLOSCOPE AMPLITUDE ACCURACY (2-4-22)
4.
7.
GEN LEVEL
2975 OSC
TOLERANCE
160 mVp-p
400 mVp-p
800 mVp-p
1.6 Vp-p
4 Vp-p
8 Vp-p
16 Vp-p
0.02 V/Div
0.05 V/Div
0.1 V/Div
0.2 V/Div
0.5 V/Div
1.0 V/Div
2.0 V/Div
7 to 9 major divisions
7 to 9 major divisions
7 to 9 major divisions
7 to 9 major divisions
7 to 9 major divisions
7 to 9 major divisions
7 to 9 major divisions
GEN LEVEL
2975 OSC
TOLERANCE
160 mVp-p
400 mVp-p
800 mVp-p
1.6 Vp-p
4 Vp-p
8 Vp-p
16 Vp-p
0.02 V/Div
0.05 V/Div
0.1 V/Div
0.2 V/Div
0.5 V/Div
1.0 V/Div
2.0 V/Div
7 to 9 major divisions
7 to 9 major divisions
7 to 9 major divisions
7 to 9 major divisions
7 to 9 major divisions
7 to 9 major divisions
7 to 9 major divisions
________
________
________
________
________
________
________
________
________
________
________
________
________
________
DIGITAL VOLTMETER DC ACCURACY (2-4-23)
4.
200 mV (±10 mV)
________
2-39
STEP
DATA
RESULT
DIGITAL VOLTMETER AC ACCURACY (2-4-24)
4.
50 Hz
100 Hz
1 kHz
10 kHz
20 kHz
200 mV (±30 mV)
200 mV (±30 mV)
200 mV (±30 mV)
200 mV (±30 mV)
200 mV (±30 mV)
_______
_______
_______
_______
_______
FUNCTION GENERATOR LEVEL ACCURACY (2-4-25)
5.
7.070 Vrms (±350 mVrms)
_______
FUNCTION GENERATOR FREQUENCY ACCURACY (2-4-26)
4.
5000 Hz (±1 Hz)
_______
FUNCTION GENERATOR TOTAL HARMONIC DISTORTION (2-4-27)
4.
Total harmonic output is <0.5%
_______
AF COUNTER ACCURACY (2-4-28)
5.
5000 Hz (±1 Hz)
_______
SINAD/DISTORTION METER ACCURACY (2-4-29)
5.
12 dB (±1.1 dB)
_______
6.
Record Residual Distortion
_______
8.
5% (±0.09%)
_______
2-40
2-6
CALIBRATION PROCEDURES
2- 6- 1
PO WER SUPPLY VO LTAG ES
PREREQUISITES:
None
EQUIPMENT REQUIRED:
Digital Multimeter
STEP
1.
PROCEDURE
Remove Case Assy (para 3-3-1).
VERIFY RESISTANCE
2.
U s i n g t h e D i g i t a l M u l t i m e t e r , v e r i f y r e s i s t a n c e b e t w e e n t h e l o c a t i o n s s h o w n a n d ch a ssi s
ground.
RESISTANCE
LOCATION
>100 Ω
4 2 A 1 A 1 A 1 J1 9 , P i n B 2
>12 Ω
4 2 A 1 A 1 A 1 J1 9 , P i n B 2 5
>12 Ω
4 2 A 1 A 1 A 1 J1 9 , P i n B 2 8
>400 Ω
4 2 A 1 A 1 A 1 J1 9 , P i n B 3 1
>2 kΩ
4 2 A 1 A 1 A 1 J1 9 , P i n C 1 4
•
If readings are correct, go to Step 3.
•
If any of the resistance measurements are out of tolerance, return the 2975 to the
f a c t o r y f o r f a u l t d i a g n o si s a n d r e p a i r .
3.
Remove CPU Adapter Assy (para 3-3-9).
4.
Using the Digital Multimeter, verify the battery voltage on the back side of the CPU
Adapter Assy is ≥2.8 Vdc.
•
I f r e a d i n g i s c o r r e c t , r e i n st a l l C P U A d a p t e r A ssy ( p a r a 3 - 3 - 9 ) a n d g o t o S t e p 5 .
•
I f r e a d i n g i s o u t o f t o l e r a n ce , r e p l a ce t h e C P U B a t t e r y a n d g o t o S t e p 5 .
(BACK SIDE)
(TOP SIDE)
(7005-4243-500)
(7005-4243-500)
Measure Battery Voltage Here
(TOP SIDE)
(7010-4238-800)
2-41
CPU Battery
STEP
PROCEDURE
VERIFY VOLTAGES
5.
A p p l y p o w e r t o t h e 2 9 7 5 f r o m a n a p p r o p r i a t e p o w e r so u r ce .
6.
U s i n g t h e D i g i t a l M u l t i m e t e r , v e r i f y t h e f o l l o w i n g v o l t a g e s b e t w e e n t h e l o c a t i o n s sh o w n
and chassis ground.
7.
VOLTAGE
LOCATION
14.8 to 15.2 Vdc
4 2 A 1 A 1 A 1 J1 9 , P i n B 2
4.9 to 5.3 Vdc
4 2 A 1 A 1 A 1 J1 9 , P i n B 2 5
4.9 to 5.3 Vdc
4 2 A 1 A 1 A 1 J1 9 , P i n B 2 8
14.8 to 15.2 Vdc
4 2 A 1 A 1 A 1 J1 9 , P i n B 3 1
4.9 to 5.3 Vdc
4 2 A 1 A 1 A 1 J1 9 , P i n C 1 4
•
If readings are correct, go to Step 7.
•
I f a n y o f t h e s u p p l y v o l t a g e s a r e o u t o f t o l e r a n ce , r e t u r n t h e 2 9 7 5 t o t h e f a ct o r y f o r
fault diagnosis and repair.
A l l o w a 1 5 - m i n u t e w a r m - u p p e r i o d b e f o r e p r o c e e d i n g w i t h t h e C a l i b r a t i o n P r o c e d u r e s.
2-42
B31
B28
B25
C14
B2
J19
042M-046
Figure 2-1 Power Supply Voltages
2-43
2-6-2
GENERATOR / ANALYZER / TCXO
PREREQUISITES:
2-6-1
Power Supply Voltages
EQUIPMENT REQUIRED:
PC w/ Ethernet Card and GPIB Card
Power Meter
P o w e r M e t e r S e n so r H e a d “ A ”
P o w e r M e t e r S e n so r H e a d “ B ”
Signal Generator
Universal Counter
E t h e r n e t C r o sso ve r C a b l e
GPIB Cables
N O T E : T h e C a s e A s s y sh o u l d b e r e a sse m b l e d p r i o r t o p e r f o r m i n g t h e G e n e r a t o r / A n a l yze r
Calibration Procedure.
N O T E : R e f e r t o F i g u r e s 2 t h r o u g h 5 f o r t h e C a l i b r a t i o n T e st E q u i p m e n t C o n f i g u r a t i o n S e t u p s,
including cable hookups and GPIB addresses.
STEP
PROCEDURE
ETHERNET CARD SETUP
1.
W i t h t h e P C o p e r a t i n g i n W i n d o w s 9 5 , 9 8 , 2 0 0 0 o r N T , r i g h t c l i c k o n t h e N e t w o r k i co n
a n d se l e ct P r o p e r t i e s .
2.
Select TCP/IP and Specify An IP Address.
3.
Enter PC IP Address: 10, 200, 126, 77
4.
E n t e r P C S u b n e t M a sk: 2 5 5 , 2 5 5 , 0 , 0
5.
A f t e r t h e P C r e b o o t s , c o n n e ct t h e E t h e r n e t C r o sso ve r C a b l e t o t h e 2 9 7 5 a n d t h e P C
Ethernet Card.
6.
Power up the 2975.
7.
Enter 2975 IP Address: 10, 200, 126, 76
8.
Enter 2975 Subnet Mask: 255, 255, 0, 0
CALIBRATION SOFTWARE SETUP
9.
I n se r t C a l i b r a t i o n S o f t w a r e C D - R O M i n t o P C .
10.
Run “Setup” to install the Calibration Software onto the PC.
N O T E : T h e d r i v e d e s i g n a t i o n c a n b e c h a n g e d t o t h e d e s i r e d d r i v e l e t t e r b y t h e u se r .
D O N O T u s e “ X ” a s t h e d r i ve l e t t e r .
11.
Follow the on-screen prompts through the installation process.
RUNNING THE CALIBRATION SOFTWARE
12.
Select the 2975 Auto Calibration icon.
13.
Enter the following when prompted: Badge - 1112
14.
With the Calibration Main Screen displayed, select Test Menu, IFR-2975 (FITS) and
Complete Calibration.
15.
Select Run All Tests.
2-44
P a ssw o r d - 1 1 1 2
STEP
16.
PROCEDURE
Follow the on-screen prompts through the Calibration process.
N O T E : W h e n t h e “ C o n n e c t T o U U T ” p o p - u p w i n d o w i s d i sp l a ye d , t h e I P A d d r e ss
e n t e r e d m u s t m a t c h t h e I P A d d r e ss o f t h e 2 9 7 5 .
NOTE: The Calibration process can be halted at anytime by selecting Pause/Abort on
t h e C a l i b r a t i o n M a i n S cr e e n .
17.
When the Calibration is completed, the Calibration Results for the Generator and
Analyzer Calibration process are stored in an electronic file on the PC, accessed by
selecting Report.
2-45
2-7
CALIBRATION DATA SHEET
TECHNICIAN:
DATE:
2975 S/N:
STEP
DATA
RESULT
POWER SUPPLY VOLTAGES (2-6-1)
>100 Ω at 42A1A1A1J19, Pin B2
_______(√)
>12 Ω at 42A1A1A1J19, Pin B25
_______(√)
>12 Ω at 42A1A1A1J19, Pin B28
_______(√)
>400 Ω at 42A1A1A1J19, Pin B31
_______(√)
>2 kΩ at 42A1A1A1J19, Pin C14
_______(√)
4.
Battery Voltage is ≥2.8 Vdc
_______
6.
1 4 . 8 t o 1 5 . 2 V d c a t 4 2 A 1 A 1 A 1 J1 9 , P i n B 2
_______(√)
4 . 9 t o 5 . 3 V d c a t 4 2 A 1 A 1 A 1 J1 9 , P i n B 2 5
_______(√)
4 . 9 t o 5 . 3 V d c a t 4 2 A 1 A 1 A 1 J1 9 , P i n B 2 8
_______(√)
1 4 . 8 t o 1 5 . 2 V d c a t 4 2 A 1 A 1 A 1 J1 9 , P i n B 3 1
_______(√)
4 . 9 t o 5 . 3 V d c a t 4 2 A 1 A 1 A 1 J1 9 , P i n C 1 4
_______(√)
2.
GENERATOR / ANALYZER / TCXO (2-6-2)
C a l i b r a t i o n R e s u l t s f o r t h e G e n e r a t o r / A n a l yze r / T C X O C a l i b r a t i o n p r o ce ss a r e st o r e d i n
an electronic file on the PC when the Calibration is completed.
EXAMPLE: C:\2975CALIBRATIONV1.8\TESTREPORT\442215.RPT
2-46
2975 Calibration Test Equipment Configuration
Storm Coaxial Cable
Splitter Assembly
N-Female to TNC-Male
Adapter
Weinschel 10 dB Attenuator
Model 1
IN
HP Power Splitter
(P/N 11667A)
Substitute this Sensor when prompted to determine
ECP-18A offsets below 10 MHz
OUT
1
N-Male to N-Male
Adapter
OUT
2
HP 8482A
Power Sensor
Weinschel 50 Ohm Load
Model 1424-4
(Connected as required)
Ethernet to/from UUT
(Crossover Cable)
CH A
Ethernet to Network
(if applicable)
PC
GPIB
SENSOR CABLE
Power Meter
HP-EPM-441A**
GPIB::4
HP ECP-18A***
Power Sensor
Command Set, set to SCPI
GEN
T/R
ANT
IFR 2975
Unit Under Test
EXT REF IO
Minimum PC Requirements:
Processor: Pentium 166 MHz
Memory: 64 MB
Operating System: Windows 95/98/NT
Video: 16 Bit Color, 1024 x 768
GPIB: National Instruments GPIB Interface Card
and Software (GPIB0, Primary 0,
Secondary None)
1 Network Adapter (2 if running on a Network)
10 MHz Out
RF Generator
HP ESG-3000A*
GPIB::9
10 MHz FREQUENCY STANDARD HOOKUP
10 MHz In
10 MHz
Frequency Standard
* The following models can be
substituted:
HP ESG-4000A
HP ESG-D3000A
HP ESG-D4000A
HP E4421B
HP E4422B
HP E4432B
HP E4433B
BNC-Male to BNC-Male Coaxial Cable
The EXTERNAL RF I/O Connector is a 10 MHz Input when External Reference is selected and a 10 MHz Output
when Internal Reference is selected. At the end of the Generator Calibration, during the TXCO Calibration, the
EXTERNAL RF I/O Connector is changed from External Reference to Internal Reference. This can cause an
unstable Reference Clock when the 2975 EXTERNAL RF I/O Connector is connected with a T-Connector to the
10 MHz Frequency Standard and the Universal Counter Reference input, causing the TXCO Calibration to fail.
* *The following models can be
substituted:
HP E4418A
HP E4418B
***The following models can be
substituted:
CH C
To 2975 GEN OUT for TXCO Calibration
Universal Counter
w/ Option 030
HP53131A
GPIB::13
042M-047
HP E4412A
Figure 2-2 2975 Calibration Test
Equipment Configuration
2-47
Generator Calibration Setup
HP 8482A
Power Sensor
Ethernet to/from UUT
(Crossover cable)
SENSOR CABLE
Ethernet to Network
(if applicable)
PC
GPIB
Power Meter
HP-EPM-441A
GPIB::4
HP ECP-18A
Power Sensor
GEN
T/R
Move Sensor here for T/R
Connector Calibration
IFR 2975
Unit Under Test
ANT
EXT REF IO
10 MHz Out
RF Generator
ESG-3000A
GPIB::9
10 MHz In
10 MHz Frequency Standard
042M-048
Figure 2-3 Generator Calibration Setup
2-48
Analyzer Calibration Setup
Ethernet to/from UUT
(Crossover Cable)
CH. A
Ethernet to Network
(if applicable)
PC
GPIB
Power Meter
HP-EPM-441A
GPIB::4
SENSOR
CABLE
HP ECP-18A
Power Sensor
GEN
T/R
IFR 2975
Unit Under Test
Splitter Assembly
IN
OUT
2
ANT
EXT REF IO
OUT
1
RF
OUTPUT
10 MHz Out
RF Generator
ESG-3000A
GPIB::9
10 MHz In
10 MHz Frequency Standard
042M-049
Figure 2-4 Analyzer Calibration Setup
2-49
TCXO Calibration Setup
Ethernet to/from UUT
(Crossover cable)
Ethernet to Network
(if applicable)
PC
GPIB
Universal Counter
w/ Option 030
HP53131A
GPIB::13
CH C
GEN
T/R
IFR 2975
Unit Under Test
ANT
10 MHz In
10 MHz Frequency Standard
10 MHz FREQUENCY STANDARD HOOKUP
The EXTERNAL RF I/O Connector is a 10 MHz Input when External Reference is selected and a 10 MHz Output
when Internal Reference is selected. At the end of the Generator Calibration, during the TXCO Calibration, the
EXTERNAL RF I/O Connector is changed from External Reference to Internal Reference. This can cause an
unstable Reference Clock when the 2975 EXTERNAL RF I/O Connector is connected with a T-Connector to the
10 MHz Frequency Standard and the Universal Counter Reference input, causing the TXCO Calibration to fail.
042M-050
Figure 2-5 TCXO Calibration Setup
2-50
SECTION 3 - REPLACEMENT PROCEDURES
3-1
GENERAL
T h i s se ct i o n co n t a i n s i n s t r u c t i o n s f o r r e p l a c e m e n t o f a n y a s s e m b l y c o n t a i n e d i n t h e 2 9 7 5 . T h e
i n st r u ct i o n s g i ve n a r e f o r r e m o v a l o f e a c h a s s e m b l y . P r e r e q u i s i t e i n s t r u c t i o n s a r e l i s t e d a s n e e d e d .
Reassembly is in reverse order of removal instructions unless otherwise noted.
3-1-1
SAFETY PRECAUTIONS
Power should be removed from the unit before any replacement procedure is initiated.
WARNING:
3-1-2
DANGEROUS VOLTATES ARE PRESENT WITH CASE ASSEMBLIES REMOVED IF
POWER IS PRESENT.
ESD PR ECAUTIONS
CAUTION:
THE REPLACEMENT PROCEDURES FOR THE 2975 SHOULD ONLY BE PERFORMED IN
A N E S D E N V I R O N M E N T A N D A L L P E R S ON N E L P E R F O R M I N G T H E R E P L A C E M E N T
PROCEDURES SHOULD HAVE KNOWLEDGE OF ACCEPTED ESD PRACTICES AND/OR
BE ESD CERTIFIED.
CAUTION
THIS EQUIPMENT CONTAINS PARTS
SENSITIVE TO DAMAGE
BY ELECTROSTATIC DISCHARGE (ESD)
3-2
TOOL REQUIREMENTS
TOOL
SIZE
WRENCH, OPEN END
5/16”
RATCHET / SOCKET
3/16”
RATCHET / DEEP SOCKET
9/16”
SCREWDRIVER
Phillips
3-1
1/4”
3-3
REPLACEMENT PROCEDURES
Page
3-3-1
Remove Case Assy .............................................................. 3-3
3-3-2
Replace Handle ................................................................... 3-4
3-3-3
R e p l a c e A t t e n u a t o r A ssy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 - 5
3-3-4
R e p l a c e G e n e r a t o r A ssy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 - 6
3-3-5
R e p l a c e R e c e i v e r A s sy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 - 7
3-3-6
R e p l a c e I F / V i d e o P C B A ssy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 - 8
3-3-7
R e p l a c e M u l t i f u n c t i o n I / O P C B A ssy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 - 9
3-3-8
R e p l a ce C A I P C B A ssy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 - 1 0
3-3-9
R e p l a c e C P U A d a p t e r A ssy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 - 1 1
3-3-10
R e p l a c e R e a r P a n e l A ssy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 - 1 2
3-3-11
R e p l a c e R e a r P a n e l P C B A ssy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 - 1 3
3-3-12
R e p l a c e P o w e r S u p p l y A ssy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 - 1 6
3-3-13
R e p l a c e D i s k I / O P C B A ssy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 - 1 9
3-3-14
R e p l a c e F r o n t P a n e l A ssy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 - 2 0
3-3-15
R e p l a c e F r o n t P a n e l A u d i o P C B A ssy. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 - 2 3
3-3-16
R e p l a c e P o w e r T e r m i n a t i o n A ssy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 - 2 4
3-3-17
R e p l a c e F l o p p y D r i v e A ssy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 - 2 6
3-3-18
R e p l a c e B a c k p l a n e P C B A ssy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 - 2 7
3-2
3- 3- 1
REMO VE CASE ASSY
PRELIMINARY PROCEDURES:
WARNING:
None
DANGEROUS VOLTAGES ARE PRESENT WITH CASE ASSY REMOVED IF POWER IS
PRESENT.
STEP
PROCEDURE
1 . R e m o ve e x t e r n a l p o w e r s o u r c e s a n d a l l e x t e r n a l c a b l e s f r o m t h e 2 9 7 5 .
2 . R e m o v e t w o s c r e w s ( 1 ) f r o m e a c h co r n e r se cu r i n g t h e R e a r P a n e l A s s y ( 2 ) t o t h e C a s e A s s y
(3).
3. Remove six screws (4) securing the Rear Panel Assy (2) to the Chassis Assy (5).
4. Remove the Case Assy (3).
1
4
2
3
5
3-3
3-3-2
REPLACE HANDLE
PRELIMINARY PROCEDURES:
STEP
Remove Case Assy (para 3-3-1)
PROCEDURE
1.
R e m o v e w a s h e r s ( 1 ) s e c u r i n g t h e H a n d l e ( 2 ) t o t h e C a se A ssy ( 3 ) .
2.
R e m o v e t h e H a n d l e ( 2 ) f r o m t h e C a se A ssy ( 3 ) .
1
3
2
042M-029
3-4
3- 3- 3
REPLACE ATTENUATO R ASSY
PRELIMINARY PROCEDURES:
STEP
Remove Case Assy (para 3-3-1)
PROCEDURE
1.
D i sco n n e c t t h e c o a x i a l c a b l e f r o m e a c h e n d o f t h e A t t e n u a t o r A ssy.
2.
R e m o v e t w o s c r e w s s e c u r i n g t h e A t t e n u a t o r A s s y t o t h e G e n e r a t o r A ssy.
3.
R e m o ve t h e A t t e n u a t o r A s s y .
3-5
3- 3- 4
REPLACE G ENERAT O R ASSY
PRELIMINARY PROCEDURES:
STEP
Remove Case Assy (para 3-3-1)
R e m o ve A t t e n u a t o r A ssy ( p a r a 3 - 3 - 1 )
PROCEDURE
1.
D i s c o n n e c t f o u r c o a x i a l c a b l e s f r o m t h e G e n e r a t o r A ssy.
2.
Remove two screws securing the Generator Assy to the Chassis Assy.
3.
Remove the Generator Assy.
3-6
3- 3- 5
REPL ACE RECEIVER ASSY
PRELIMINARY PROCEDURES:
STEP
Remove Case Assy (para 3-3-1)
PROCEDURE
1.
D i s c o n n e c t f o u r c o a x i a l c a b l e s f r o m t h e R e c e i v e r A ssy.
2.
D i sco n n e c t t h e c o a x i a l c a b l e f r o m t h e G e n e r a t o r A ssy.
3.
R e m o v e t w o s c r e w s s e c u r i n g t h e R e c e i ve r A s s y t o t h e C h a s s i s A s s y .
4.
Remove the Receiver Assy.
3-7
3- 3- 6
REPL ACE IF /VIDEO PCB ASSY
PRELIMINARY PROCEDURES:
STEP
Remove Case Assy (para 3-3-1)
PROCEDURE
1.
D i s c o n n e c t f o u r c o a x i a l c a b l e s f r o m t h e I F / V i d e o P C B A ssy.
2.
L i f t u p o n t h e c a r d e j e c t o r s a n d r e m o ve t h e I F / V i d e o P C B A s s y f r o m t h e C h a s s i s A s s y .
1
2
3-8
3- 3- 7
REPL ACE MUL T IF UNCT IO N I/O PCB ASSY
PRELIMINARY PROCEDURES:
STEP
Remove Case Assy (para 3-3-1)
PROCEDURE
1.
D i s c o n n e c t t h e c o a x i a l c a b l e f r o m t h e I F / V i d e o P C B A ssy.
2.
D i s c o n n e c t t h r e e c o a x i a l c a b l e s f r o m t h e M u l t i f u n ct i o n I / O P C B A ssy.
3.
L i f t u p o n t h e c a r d e j e c t o r s a n d r e m o ve t h e M u l t i f u n ct i o n I / O P C B A s s y f r o m t h e C h a s s i s A s s y .
3-9
3- 3- 8
REPLACE CAI PCB ASSY
PRELIMINARY PROCEDURES:
STEP
Remove Case Assy (para 3-3-1)
PROCEDURE
1.
D i s c o n n e c t t w o c o a x i a l c a b l e s f r o m t h e C A I P C B A ssy.
2.
L i f t u p o n t h e c a r d e j e c t o r s a n d r e m o ve t h e C A I P C B A s s y f r o m t h e C h a s s i s A s s y .
3-10
3- 3- 9
REPLACE CPU ADAPTER ASSY
PRELIMINARY PROCEDURES:
STEP
Remove Case Assy (para 3-3-1)
PROCEDURE
1.
D i s c o n n e c t t h e w i r e c a b l e a n d r i b b o n ca b l e f r o m t h e C P U A d a p t e r P C B A ssy.
2.
L i f t u p o n t h e c a r d e j e c t o r s a n d r e m o ve t h e C P U A d a p t e r P C B A s s y f r o m t h e C h a s s i s A s s y .
3-11
3- 3- 10
REPLACE REAR PANEL ASSY
PRELIMINARY PROCEDURES:
Remove Case Assy (para 3-3-1)
STEP
PROCEDURE
1 . R e m o ve e x t e r n a l p o w e r s o u r c e s a n d a l l e x t e r n a l c a b l e s f r o m t h e 2 9 7 5 .
2 . R e m o v e t w o s c r e w s ( 1 ) f r o m e a c h co r n e r se cu r i n g t h e R e a r P a n e l A s s y ( 2 ) t o t h e C a s e A s s y
(3).
3. Remove six screws (4) securing the Rear Panel Assy (2) to the Chassis Assy (5).
4. Remove the Rear Panel Assy (2).
1
4
2
3
5
042M-028
3-12
3- 3- 11
REPL ACE REAR PANEL PCB ASSY
PRELIMINARY PROCEDURES:
STEP
Remove Case Assy (para 3-3-1)
PROCEDURE
1 . R e m o v e t w o c o a x i a l c a b l e s f r o m t h e R e a r P a n e l P C B A ssy.
2 . R e m o v e t h e n u t a n d w a s h e r f r o m t h e se ve n co a xi a l co n n e ct o r s o n t h e R e a r P a n e l P C B A ssy.
3-13
STEP
PROCEDURE
3. Remove five screws.
4 . R e m o v e n u t s ( 2 e a c h ) f r o m t h r e e co n n e ct o r s.
3-14
STEP
PROCEDURE
5 . R e m o ve t h e w i r e c a b l e ( F a n ) f r o m t h e R e a r P a n e l P C B A ssy.
6. Remove the Rear Panel PCB Assy.
3-15
3- 3- 12
REPLACE PO WER SUPPL Y ASSY
PRELIMINARY PROCEDURES:
STEP
Remove Case Assy (para 3-3-1)
R e m o ve A t t e n u a t o r A ssy ( p a r a 3 - 3 - 3 )
PROCEDURE
1.
R e m o v e t h e s c r e w s e c u r i n g t h e P o w e r S u p p l y A s s y t o t h e C a r d ca g e A ssy.
2.
Remove five screws.
3-16
STEP
PROCEDURE
3.
R e m o v e n u t s ( 2 e a c h ) f r o m t h r e e co n n e ct o r s.
4.
Fully loosen the captive screw securing the Power Supply Assy to the Chassis Assy.
3-17
STEP
PROCEDURE
5.
D i s c o n n e c t t h e w i r e c a b l e a n d r i b b o n c a b l e f r o m t h e P o w e r S u p p l y A ssy.
6.
R a i s e t h e P o w e r S u p p l y A s s y s t r a i g h t u p a n d o u t o f t h e C h a s s i s A ssy.
3-18
3- 3- 13
REPLACE DISK I/O PCB ASSY
PRELIMINARY PROCEDURES:
STEP
Remove Case Assy (para 3-3-1)
R e m o ve P o w e r S u p p l y A ssy ( p a r a 3 - 3 - 1 2 )
PROCEDURE
1.
R e m o v e t w o s c r e w s s e c u r i n g t h e D i s k I / O P C B A s s y t o t h e P o w e r S u p p l y A ssy.
2.
Remove the Disk I/O PCB Assy.
3-19
3- 3- 14
REPL ACE F RO NT PANEL ASSY
PRELIMINARY PROCEDURES:
STEP
Remove Case Assy (para 3-3-1)
PROCEDURE
3.
R e m o v e t w o s c r e w s f r o m e a c h c o r n e r o f t h e F r o n t P a n e l A ssy.
4.
Remove two nuts from connector.
3-20
STEP
PROCEDURE
5.
Separate the Front Panel Assy from the Chassis Assy.
6.
D i s c o n n e c t t h e w i r e c a b l e a n d r i b b o n ca b l e f r o m t h e C P U A d a p t e r P C B A ssy.
3-21
STEP
7.
PROCEDURE
D i s c o n n e c t t h r e e c o a x i a l c a b l e s f r o m t h e F r o n t P a n e l A ssy.
3-22
3- 3- 15
REPLACE FRO NT PANEL AUDIO PCB ASSY
PRELIMINARY PROCEDURES:
STEP
Remove Case Assy (para 3-3-1)
R e m o ve F r o n t P a n e l A ssy ( p a r a 3 - 3 - 1 4 )
PROCEDURE
1.
Remove six screws securing the Front Panel Audio PCB Assy to the Chassis Assy.
2.
R e m o ve t h e F r o n t P a n e l A u d i o P C B A ssy.
3-23
3- 3- 16
REPLACE PO WER TERMINATIO N ASSY
PRELIMINARY PROCEDURES:
STEP
1.
Remove Case Assy (para 3-3-1)
R e m o ve P o w e r S u p p l y A ssy ( p a r a 3 - 3 - 1 2 )
PROCEDURE
R e m o v e t h e w i r e c a b l e a n d t w o c o a x i a l c a b l e s f r o m t h e P o w e r T e r m i n a t i o n A ssy.
3-24
STEP
PROCEDURE
2.
Remove four screws securing the Power Termination Assy to the Chassis Assy.
3.
Remove the Power Termination Assy.
3-25
3- 3- 17
REPLACE FLO PPY DRIVE ASSY
PRELIMINARY PROCEDURES:
STEP
Remove Case Assy (para 3-3-1)
R e m o ve F r o n t P a n e l A ssy ( p a r a 3 - 3 - 1 4 )
PROCEDURE
1.
R e m o ve t w o s c r e w s s e c u r i n g t h e F l o p p y D r i v e A s s y t o t h e C h a s s i s A s s y .
2.
R e m o ve t w o s c r e w s ( t h r o u g h t h e a c c e s s h o l e s ) s e c u r i n g t h e F l o p p y D r i v e A s s y t o t h e C h a s s i s
Assy.
3.
R e m o ve t h e F l o p p y D r i v e A s s y .
3-26
3- 3- 18
REPLACE BACKPLANE PCB ASSY
PRELIMINARY PROCEDURES:
STEP
Remove Case Assy (para 3-3-1)
R e m o ve A t t e n u a t o r A ssy ( p a r a 3 - 3 - 3 )
R e m o ve G e n e r a t o r A ssy ( p a r a 3 - 3 - 4 )
R e m o v e R e c e i ve r A s s y ( p a r a 3 - 3 - 5 )
R e m o ve I F / V i d e o P C B A ssy ( p a r a 3 - 3 - 6 )
R e m o v e M u l t i f u n ct i o n I / O P C B A s s y ( p a r a 3 - 3 - 7 )
Remove CAI PCB Assy (para 3-3-8)
R e m o ve C P U A d a p t e r A ssy ( p a r a 3 - 3 - 9 )
R e m o ve P o w e r S u p p l y A ssy ( p a r a 3 - 3 - 1 2 )
Remove Power Termination Assy (para 3-3-16)
PROCEDURE
1.
Remove screw.
2.
R e m o v e f o u r s c r e w s s e c u r i n g t h e C a r d ca g e A s s y t o t h e C h a s s i s A s s y .
3-27
STEP
PROCEDURE
3.
R e m o v e f o u r s c r e w s s e c u r i n g t h e C a r d ca g e A s s y t o t h e C h a s s i s A s s y .
4.
Remove the Cardcage Assy from the Chassis Assy.
5.
R e m o v e s e v e n s c r e w s s e c u r i n g t h e B a ckp l a n e P C B A s s y t o t h e C h a s s i s A s s y .
6.
R e m o ve t h e B a c k p l a n e P C B A s s y f r o m t h e C h a s s i s A s s y .
3-28
SECTION 4 - PARTS LIST
4-1
GENERAL
T h i s se ct i o n co n t a i n s t h e p a r t n u m b e r s a n d d e s c r i p t i o n s f o r r e p l a c e a b l e p a r t s i n t h e 2 9 7 5 .
Page
A cc e s s o r i e s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 - 2
Composite Assy ................................................................................ 4-4
Chassis Assy ................................................................................... 4-5
CPU Adapter Assy ............................................................................ 4-7
4-1
4-2
PARTS LISTS
4- 2- 1
ACCESSO RIES ( F ig u re 4- 1)
REFERENCE
DESIGNATOR
PART
NUMBER
MFR
CODE
1
1002-4250-4P0
51190
2
1002-4250-4C0
51190
CD-ROM, MANUAL, MAINTENANCE, 2975
3
1002-4202-2P0
51190
MANUAL, OPERATION, 2975
4
1002-4202-2C0
51190
CD-ROM, MANUAL, OPERATION, 2975
5
1412-4752-000
51190
ACCESSORY POUCH
6
1412-4400-500
51190
CASE, SOFT-PADDED, CARRYING
7
1414-4452-900
51190
COVER, LID
8
1412-4200-300
51190
CASE, TRANSIT w/ WHEELS
9
6041-0001-200
51190
CORD,AC,NEMA5-15,IEC320-C13,RA
DESCRIPTION
MANUAL, MAINTENANCE, 2975
10
2113-0000-004
51190
CONN,ADAPT BNC JACK/N PLUG
11
2200-0410-700
51190
C O N N , A D A P T B N C JA C K - T N C P L U G
12
1201-0909-900
51190
ANTENNA
13
5106-0000-055
51190
FUSE,3AMP,FAST,5MMX20MM,250V
14
2113-0000-013
51190
CONN,ADAPT,M2F BNC,RT.ANGLE
15
6045-4283-300
51190
C A B L E , R J1 2 , 6 C O N D , F L A T , 1 - 1
16
6041-4201-200
51190
CABLE ASSY, OPT12 KVL INTERFACE
17
7005-4247-800
51190
MICROPHONE
4-2
1
2
3
4
5
6
8
7
17
9
10
16
11
13
15
14
F i g u r e 4 - 1 A cce sso r i e s
4-3
12
4- 2- 2
CO MPO SIT E ASSY ( 7003- 4248- 500) ( Figure 4- 2)
(REV C)
REFERENCE
DESIGNATOR
PART
NUMBER
1
1412-4254-900
CASE,WRAP
2
2803-0188-012
SCREW,4-40 X 3/16 PPHM,BLACK
3
2803-0188-006
SCREW,4-40 X 3/16 PPHM
4
2803-0563-012
SM,4-40X9/16,PPH,SS,BK
DESCRIPTION
5
2840-0000-034
WASHER, FLAT .505ID,.6850D,.02
6
2400-9924-600
LABEL,S/N,RCTS-P25
A1
7005-4243-900
MECH ASSY,CHASSIS
A2
7005-4248-400
MECH ASSY,REAR PANEL
A3
7005-4243-100
MECH ASSY,ATTENUATOR
A4
7005-4442-500
MECH ASSY,GENERATOR
A5
7010-4236-800
PCB ASSY,IF VIDEO
A6
7010-4236-700
PCB ASSY,MULTIFUNCTION I/O
A7
7005-4248-100
MECH ASSY,RECEIVER
A8
7010-4232-900
PCB ASSY,CAI
A9
7110-4246-800
MOLDED HANDLE
W1
6050-1990-500
COAX ASSY,316,RFSSMB/RFSSMB
W2
6050-1990-350
COAX ASSY,316,RFSSMB/RFSSMB
W3
6050-1990-600
COAX ASSY,316,RFSSMB/RFSSMB
W4
6050-1990-950
COAX ASSY,316,SSMB RA/SSMB RA
W5
6050-1990-300
COAX ASSY,316,RFSSMB/RFSSMB
W6
6061-1990-300
COAX ASSY,100,RFSSMB/RFSSMB
W7
6061-1990-300
COAX ASSY,100,RFSSMB/RFSSMB
W8
6061-1990-300
COAX ASSY,100,RFSSMB/RFSSMB
W9
6042-4283-100
COAX ASSY,ATT/GEN
( R E V D ) C O N T A I N S A L L P A R T S I N RE V C W I T H T H E F O L L O W I N G E X C E P T I O N S :
REFERENCE
DESIGNATOR
PART
NUMBER
A4
7005-4444-200
DESCRIPTION
MECH ASSY,GENERATOR
( R E V E ) C O N T A I N S A L L P A R T S I N RE V D W I T H T H E F O L L O W I N G E X C E P T I O N S :
REFERENCE
DESIGNATOR
PART
NUMBER
A4
7005-4249-000
DESCRIPTION
MECH ASSY,GENERATOR
4-4
4- 2- 3
CHASSIS ASSY ( 7005- 4243- 900) ( Figure 4- 3)
(REV G)
REFERENCE
DESIGNATOR
PART
NUMBER
1
1403-4255-000
DESCRIPTION
CHASSIS,MAIN
2
1400-4266-700
BRACKET,CARD CAGE
3
1405-4266-800
PANEL,CHASSIS REAR
4
1400-4259-300
BRACKET,SPEAKER
5
1400-4259-400
BRACKET,POWER SUPPLY MTG
6
2803-0188-003
SCREW,4-40 X 3/16 PFHM
7
2803-0250-003
SCREW,4-40 X 1/4 PFHM
8
2803-0250-006
SCREW,4-40 X 1/4 PPHM
9
2803-0188-006
SCREW,4-40 X 3/16 PPHM
10
1400-4255-500
BRACKET,FAN
11
2850-1692-600
SCREW,.340L35-6.25HH,4-40X.410
12
2850-7866-300
STANDOFF,HEX,MALE-FEMALE
13
2840-7873-000
WASHER, LOCK .50ID INT STAR
14
2807-0157-006
SM,M2.5X4MM,PPH,SS,PA
15
2803-0563-012
SM,4-40X9/16,PPH,SS,BK
16
2850-7800-100
N U T , JA M 1 / 2 " S M A L L P R O F I L E
17
2803-1000-006
SCREW 4-40 X 1 PBHMS
18
2845-0000-008
FINGERSTOCK,97-0611-17
19
4503-0002-010
RETAINER CLIP,10P RIBBON CONN
20
2525-4269-400
GASKET, POWER TERM/FT PNL
21
2525-4269-200
GASKET, REAR PANEL I/O
A1
7010-4236-100
PCB ASSY,BACKPLANE
A2
7010-4238-700
PCB ASSY,FRONT PANEL AUDIO
A3
7010-4233-800
PCB ASSY,REAR PANEL
A4
7005-4243-700
MECH ASSY,FRONT PANEL
A5
7005-4243-500
MECH ASSY,CPU ADAPTER
A6
7005-4243-400
MECH ASSY,POWER SUPPLY
A7
7005-4242-500
MECH ASSY,POWER TERM
A8
7110-4244-400
PURCH,ASSY,FLOPPY DRIVE
A9
7010-4232-800
PCB ASSY,DISK I/O
B1
7005-4244-600
MECH ASSY,FAN
LS1
7007-4282-700
WIRE HARN ASSY,SPEAKER
W1
6045-4282-600
RIBBON CA ASSY,10-C,8.3LG
W2
6045-4282-600
RIBBON CA ASSY,10-C,8.3LG
W4
6045-4282-800
RIBBON CA ASSY,TYPE 1
W5
6045-4282-900
RIBBON CA ASSY,GPIB
W6
6044-2111-400
COAX ASSY,CONF,SMSMA/RFSSMB
W7
6044-2101-100
COAX ASSY,CONF,RFSSMB/RFSSMB
W8
6050-2081-650
COAX ASSY,316,RFSSMB/SFSMB
W9
6050-2081-650
COAX ASSY,316,RFSSMB/SFSMB
4-5
4- 2- 3
CHASSIS ASSY ( 7005- 4243- 900) ( Figure 4- 3) ( cont )
(REV G) (cont)
REFERENCE
DESIGNATOR
PART
NUMBER
W10
W11
6050-2081-650
6048-0000-100
DESCRIPTION
COAX ASSY,316,RFSSMB/SFSMB
CABLE ASSY,FFC,TYPE D,38MM
( R E V H ) C O N T A I N S A L L P A R T S I N RE V G W I T H T H E F O L L OW I N G E X C E P T I O N S :
REFERENCE
DESIGNATOR
PART
NUMBER
A5
7010-4238-800
DESCRIPTION
PCB ASSY,CPU ADAPTER
( R E V J ) C O N T A I N S A L L P A R T S I N RE V H W I T H T H E F O L L O W I N G E X C E P T I O N S :
REFERENCE
DESIGNATOR
PART
NUMBER
22
W4
1414-9950-500
6045-4282-800
DESCRIPTION
PLATE,37P,D-SUB
RIBBON CA ASSY,TYPE 1
4-6
(Removed)
4- 2- 4
CPU ADAPTER ASSY ( Figure 4- 4)
(7005-4243-500) (REV F)
REFERENCE
DESIGNATOR
PART
NUMBER
BT1
4000-0014-000
DESCRIPTION
BATTERY, LITHIUM, 3 V
(7010-4238-800) (REV C)
REFERENCE
DESIGNATOR
PART
NUMBER
BT1
4000-0014-000
DESCRIPTION
BATTERY, LITHIUM, 3 V
4-7
T H I S P A G E I N T E N T I ON A L L Y L E F T B L A N K .
4-8
CAUTION:
X10
X8
X2
CONTAINS PARTS AND ASSEMBLIES
SUSCEPTIBLE TO DAMAGE BY
ELECTROSTATIC DISCHARGE (ESD).
2
4
5
1
6
A3
X2
3
X4
3
A2
A1
A6
A8
A5
A7
A4
P/O (A9)
A9
042M-036
Figure 4-2 2975 Composite Assy
4-9
042M-035
Figure 4-2 2975 Composite Assy (cont)
4-10
Figure 4-3 2975 Chassis Assy
4-11
BT1
BT1
(7005-4243-500)
(7010-4238-800)
Figure 4-4 CPU Adapter Assy
4-12
SECTION 5 - ASSEMBLIES
FIGURE
TITLE
5-1
5-2
5-3
2975 System Interconnect
Chassis Assy
Backplane PCB Assy
5-4
Front Panel Audio PCB Assy
5-5
5-6
5-7
Rear Panel PCB Assy
Front Panel Assy
CPU Adapter Assy
5-8
5-9
5-10
5-11
5-12
5-13
5-14
Power Supply Assy
Power Termination Assy
Floppy Drive Assy
Disk I/O PCB Assy
Rear Panel Assy
Attenuator Assy
Generator Assy
5-15
5-16
5-17
5-18
5-19
IF/Video PCB Assy
Multifunction I/O PCB Assy
Receiver Assy
CAI PCB Assy
Handle Assy
NOTE:
(0000-4242-000)
(7005-4243-900)
(7010-4236-100)
(0000-4234-000)
(7010-4234-000)*
(7010-4238-700)
(7010-4233-800)
(7005-4243-700)
(7005-4243-500)*
(7010-4238-800)
(7005-4243-400)
(7005-4242-500)
(7110-4244-400)
(7010-4232-800)
(7005-4243-800)
(7005-4243-100)
(7005-4242-600)*
(7005-4442-500)*
(7005-4444-200)*
(7005-4249-000)
(7010-4236-800)
(7010-4236-700)
(7005-4248-100)
(7010-4232-900)
(7110-4246-800)
PAGE
(42)
(42A1A1)
(42A1A1A1)
5-3
5-4
5-5
(42A1A1A2)
(42A1A1A2)
(42A1A1A3)
(42A1A1A4)
(42A1A1A5)
(42A1A1A5)
(42A1A1A6)
(42A1A1A7)
(42A1A1A8)
(42A1A1A9)
(42A1A2)
(42A1A3)
(42A1A4)
(42A1A4)
(42A1A4)
(42A1A4)
(42A1A5)
(42A1A6)
(42A1A7)
(42A1A8)
(42A1A9)
5-10
5-10
5-11
5-12
5-13
5-13
5-14
5-15
5-16
5-17
5-18
5-19
5-20
5-20
5-20
5-20
5-21
5-22
5-23
5-24
5-25
A s t e r i c k ( * ) i n d i c a t e s a n A s s y t h a t i s o b so l e t e o r h a s b e e n r e p l a c e d .
5-1
T H I S P A G E I N T E N T I ON A L L Y L E F T B L A N K .
5-2
( REV D, E, F )
( REV E )
( REV F )
Figure 5-1 2975 System Interconnect
(0000-4242-000-G)
5-3
CAUTION:
CONTAINS PARTS AND ASSEMBLIES
SUSCEPTIBLE TO DAMAGE BY
ELECTROSTATIC DISCHARGE (ESD).
042-005
Figure 5-2 Chassis Assy
(7005-4243-900-G) (42A1A1)
5-4
J7
J11
J13
J12
J19
J5
J9
J2
J21
J1
J22
J23
J25
J10
J3
J26
J14
J6
J4
J15
J16
J18
J24
J20
J8
J17
042M-030
Figure 5-3 Backplane PCB Assy
(7010-4236-100-B) (42A1A1A1)
5-5
+15V
-15V
+5VA
+24V
CAI_40MHZ
RX_CHANGE
RX_CLEAR
IF_40MHZ
10MHZ_GEN
HS_REF
RX_SPARE_1
RX_SPARE_2
RX_DOUT
MF_40MHZ
EXT_REF_IO
RX_SPARE_3
RX_SPARE_4
RX_DIN
RX_DCLK
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
A12
A13
A14
A15
A16
B1
B2
B3
B4
B5
B6
B7
B8
B9
B10
B11
B12
B13
B14
B15
B16
C1
C2
C3
C4
C5
C6
C7
C8
C9
C10
C11
C12
C13
C14
C15
C16
J3
J2
Rx
-15V
+15V
+5VA
+24V
GEN_CHANGE
GEN_CLEAR
10MHZ_GEN
GEN_SPARE_1
GEN_SPARE_2
GEN_DOUT
GEN_SPARE_3
GEN_SPARE_4
ST 48 PIN DIN F
GEN_DIN
GEN_DCLK
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
A12
A13
A14
A15
A16
B1
B2
B3
B4
B5
B6
B7
B8
B9
B10
B11
B12
B13
B14
B15
B16
C1
C2
C3
C4
C5
C6
C7
C8
C9
C10
C11
C12
C13
C14
C15
C16
-15V
+15V
+5VA
Gen
ST 48 PIN DIN F
+24V
IF_CHANGE
IF_SRST
IF_40MHZ
IF_SPARE_1
IF_SPARE_2
IF_DOUT
IF_COUNT
IF_A/D_BUSY
J28
SIGNAL1
SIGNAL3
4 spares
4 spares
SIGNAL5
SIGNAL7
SIGNAL9
SIGNAL11
SIGNAL13
SIGNAL15
LVDS1LVDS3LVDS5LVDS7LVDS9LVDS11LVDS13LVDS15LVDS1+
LVDS3+
LVDS5+
LVDS7+
LVDS9+
LVDS11+
LVDS13+
LVDS15+
SIGNAL2
SIGNAL4
SIGNAL6
SIGNAL8
SIGNAL10
SIGNAL12
SIGNAL14
SIGNAL16
LVDS2LVDS4LVDS6LVDS8LVDS10LVDS12LVDS14LVDS16LVDS2+
LVDS4+
LVDS6+
LVDS8+
LVDS10+
LVDS12+
LVDS14+
LVDS16+
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
A12
A13
A14
A15
A16
B1
B2
B3
B4
B5
B6
B7
B8
B9
B10
B11
B12
B13
B14
B15
B16
C1
C2
C3
C4
C5
C6
C7
C8
C9
C10
C11
C12
C13
C14
C15
C16
IF_SDIN
IF_SCLK
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
A12
A13
A14
A15
A16
B1
B2
B3
B4
B5
B6
B7
B8
B9
B10
B11
B12
B13
B14
B15
B16
C1
C2
C3
C4
C5
C6
C7
C8
C9
C10
C11
C12
C13
C14
C15
C16
IF/Video
IF_CHANGE
IF_SDIN
IF_SRST
RX_CHANGE
RX_DOUT
RX_SPARE_1
RX_SPARE_2
GEN_CLEAR
GEN_DOUT
GEN_SPARE_3
ATT_LATCH
PT_RXT/R_IN
PT_RX_OVLD_OUT
PT_TXT/R_IN
PT_RFS
PT_TFS
PT_TX_OVLD_OUT
PT_DET_SLO
NC
NC
IF_COUNT
IF_SCLK
IF_A/D_BUSY
RX_DCLK
GEN_DCLK
GEN_SPARE_1
GEN_SPARE_2
ATT_DATA
PT_OVLD_RESET_IN
PT_D_OUT
ST 48 PIN DIN F
PT_SCLK
6.
ST 48 PIN DIN F
2 spares
PT_EEPROM_CS
PT_EEPROM_S_IN
PT_EEPROM_S_OUT
EXT_TRIG
IF_DOUT
IF_SPARE_1
IF_SPARE_2
RX_DIN
RX_CLEAR
RX_SPARE_3
RX_SPARE_4
GEN_DIN
GEN_CHANGE
GEN_SPARE_4
ATT_CLOCK
NC
PT_D_IN
PT_CLK
PT_FAN
D
J4
A1
Multi-I/O
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
A12
A13
A14
A15
A16
A17
A18
A19
A20
A21
A22
A23
A24
A25
A26
A27
A28
A29
A30
A31
A32
B1
B2
B3
B4
B5
B6
B7
B8
B9
B10
B11
B12
B13
B14
B15
B16
B17
B18
B19
B20
B21
B22
B23
B24
B25
B26
B27
B28
B29
B30
B31
B32
C1
C2
C3
C4
C5
C6
C7
C8
C9
C10
C11
C12
C13
C14
C15
C16
C17
C18
C19
C20
C21
C22
C23
C24
C25
C26
C27
C28
C29
C30
C31
C32
+15V
+5VA
-15V
PT_OVLD_RESET_IN
PT_RX_OVLD_OUT
PT_RXT/R_IN
PT_DET_SLO
PT_CLK
PT_EEPROM_CS
PT_RFS
PT_SCLK
PT_TX_OVLD_OUT
PT_TXT/R_IN
PT_FAN
PT_EEPROM_S_IN
PT_EEPROM_S_OUT
PT_TFS
PT_D_IN
PT_D_OUT
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
A12
A13
A14
A15
A16
B1
B2
B3
B4
B5
B6
B7
B8
B9
B10
B11
B12
B13
B14
B15
B16
J5
Power
Term
RA 32 PIN DIN M
ATT
ATT_DATA
ATT_CLOCK
ATT_LATCH
+5VD
+15V
1
2
3
4
5
6
7
8
9
10
J9
ST 10 PIN RBN M
J1
NOTES:
(UNLESS OTHERWISE SPECIFIED)
1. ALL RESISTORS ARE 1%, 1/16 W.
2. ALL RESISTANCE IS EXPRESSED IN OHMS.
3. ALL CAPACITANCE IS EXPRESSED IN MICROFARADS.
4. ALL INDUCTANCE IS EXPRESSED IN MICROHENRIES.
CAUTION:
CONTAINS PARTS AND ASSEMBLIES SUSCEPTIBLE
TO DAMAGE BY ELECTROSTATIC DISCHARGE (ESD).
ST 96 PIN DIN F
042M-017
Figure 5-3 Backplane PCB Assy (cont)
(0000-4236-100-A) (42A1A1A1)
5-6
ST 96 PIN DIN F
J26
FPA_VOUT_DISABLE
+5VD
FPA_VOUT_CLK
FPA_VOUT_DATA
FPA_VOUT_LATCH
FPA_VOUT_DISABLE
FPA_A/D_CONV
FPA_A/D_CLK
FP_UUT_DIG_OUT1_OC
FP_UUT_DIG_OUT2_OC
FPA_SPARE1
FPA_SPARE2
FPA_SINE_SQUARE
PTT
FPA_BUSY
FPA_SINAD_DATA
FPA_MIC_DATA
FPA_SINE_SQ
FP_UUT_DIG_IN1
FP_UUT_DIG_IN2
FP_UUT_DIG_IN3
FP_UUT_DIG_IN4
FP_UUT_SERIAL_IN1
FP_UUT_SERIALOUT1_OC
FP_UUT_DIG_OUT3_OC
FP_UUT_DIG_OUT4_OC
FPA_DEMOD_UNBAL
FPA_FGEN_UNBAL
FPA_MIC_BIAS
FPA_DATA_OUT_LATCH
FPA_DATA_OUT_B
FPA_DIO_DATA_CLK_B
+15V
+5VD
-15V
Disk I/O
RA 44 PIN 2MM HDR M
FPA_A/D_CLK
FPA_SINE_SQUARE
FPA_SINE_SQ
DIO_E2_DOUT
DIO_E2_CS
DIO_VOL_LATCH
DIO_REFBACK_LATCH
CRY_CT_OUT_CLK_B
CRY_CT_OUT_DATA_B
CRY_CT_OUT_SYNC_B
CRY_PT_OUT_CLK_B
CRY_PT_OUT_DATA_B
CRY_PT_OUT_SYNC_B
CRY_PT_IN_CLK
CRY_PT_IN_DATA
CRY_PT_IN_SYNC
CRY_CT_IN_CLK
CRY_CT_IN_DATA
CRY_CT_IN_SYNC
CRY_HST_IN_CLK
CRY_HST_IN_DATA
CRY_HST_IN_SYNC
CRY_HST_OUT_CLK_B
CRY_HST_OUT_DATA_B
CRY_HST_OUT_SYNC_B
CRY_KEYED_ALC
CRY_SYSTEM_CLK_B
CRY_ALARM_ALP
CRY_RESET_B
CRY_ZERO_B
CRY_BIT_ALP_OK
CRY_SPARE_1
CRY_SPARE_2
CRY_SPARE_3
DIO_SPEAKER_CLOCK
DIO_AUD_LATCH
FPA_MIC_BIAS
D
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
CRY_CT_OUT_CLK_B
CRY_CT_OUT_DATA_B
CRY_CT_OUT_SYNC_B
CRY_PT_OUT_CLK_B
CRY_PT_OUT_DATA_B
CRY_PT_OUT_SYNC_B
CRY_PT_IN_CLK
CRY_PT_IN_DATA
CRY_PT_IN_SYNC
CRY_CT_IN_CLK
CRY_CT_IN_DATA
CRY_CT_IN_SYNC
CRY_HST_IN_CLK
CRY_HST_IN_DATA
CRY_HST_IN_SYNC
CRY_HST_OUT_CLK_B
CRY_HST_OUT_DATA_B
CRY_HST_OUT_SYNC_B
CRY_KEYED_ALC
CRY_BIT_ALP_OK
CRY_ALARM_ALP
CRY_RESET_B
CRY_ZERO_B
CRY_SPARE_1
CRY_SYSTEM_CLK_B
+5VD
J14
CPU
-15V
FLPY:DENS
FLPY:DS1
FLPY:MTR1
FLPY:DIR
FLPY:HDSEL
FLPY:WP
FLPY:DSKCHG
DIO_CLOCK
DIO_DATA
BATTERY+
+5VA
FLPY:TRK0
FLPY:DS0
FLPY:MTR0
FLPY:STEP
FLPY:WD
FLPY:WG
BEEP
DIO_SPARE1
DIO_SPARE2
DIO_E2_DOUT
BATTERYHS_REF
+5VD
DIO_E2_CS
DIO_REFBACK_LATCH
DIO_VOL_LATCH
DIO_AUD_LATCH
DIO_SPEAKER_CLOCK
DIO_SPEAKER_DATA
BACKLIGHT
+5VD
W6
W7
CRY_BATTERY
+15V
FLPY:INDEX
FLPY:RD
NC
ST 48 PIN DIN F
R1
D
RP CRYPTION
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
A12
A13
A14
A15
A16
B1
B2
B3
B4
B5
B6
B7
B8
B9
B10
B11
B12
B13
B14
B15
B16
C1
C2
C3
C4
C5
C6
C7
C8
C9
C10
C11
C12
C13
C14
C15
C16
6.
6.
R2
PTT
J8
J7
R3
FPA_FGEN_UNBAL
FPA_DEMOD_UNBAL
FPA_SPARE1
FPA_SPARE2
DIO_SPARE1
DIO_SPARE2
DIO_DATA
DIO_SPEAKER_DATA
DIO_CLOCK
+15V
Front Panel Audio
1M
FP_UUT_DIG_IN1
FP_UUT_DIG_IN2
FP_UUT_DIG_IN3
FP_UUT_DIG_IN4
FP_UUT_DIG_OUT1_OC
FP_UUT_DIG_OUT2_OC
FP_UUT_DIG_OUT3_OC
FP_UUT_DIG_OUT4_OC
FPA_DATA_OUT_LATCH
FPA_DATA_OUT_B
FPA_VOUT_LATCH
FPA_DIO_DATA_CLK_B
FPA_VOUT_DATA
FPA_A/D_CONV
FPA_BUSY
FPA_MIC_DATA
FPA_SINAD_DATA
FPA_VOUT_CLK
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
-15V
10.0K
FP_UUT_SERIAL_IN1
FP_UUT_SERIALOUT1_OC
10.0K
Multi-I/O
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
A12
A13
A14
A15
A16
A17
A18
A19
A20
A21
A22
A23
A24
A25
A26
A27
A28
A29
A30
A31
A32
B1
B2
B3
B4
B5
B6
B7
B8
B9
B10
B11
B12
B13
B14
B15
B16
B17
B18
B19
B20
B21
B22
B23
B24
B25
B26
B27
B28
B29
B30
B31
B32
C1
C2
C3
C4
C5
C6
C7
C8
C9
C10
C11
C12
C13
C14
C15
C16
C17
C18
C19
C20
C21
C22
C23
C24
C25
C26
C27
C28
C29
C30
C31
C32
ST 40 PIN RBN M
J6
D
CRY_1.3-3V_MEM
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
A12
A13
A14
A15
A16
A17
A18
A19
A20
A21
A22
A23
A24
A25
A26
A27
A28
A29
A30
A31
A32
B1
B2
B3
B4
B5
B6
B7
B8
B9
B10
B11
B12
B13
B14
B15
B16
B17
B18
B19
B20
B21
B22
B23
B24
B25
B26
B27
B28
B29
B30
B31
B32
C1
C2
C3
C4
C5
C6
C7
C8
C9
C10
C11
C12
C13
C14
C15
C16
C17
C18
C19
C20
C21
C22
C23
C24
C25
C26
C27
C28
C29
C30
C31
C32
ST 96 PIN DIN F
J18
+5VD
FLPY:WG
FLPY:WP
FLPY:DS1
FLPY:DS0
FLPY:HDSEL
AUDIO_OUT_R
AUDIO_OUT_L
MIC_BIAS
MIC
AUDIO_IN_R
+15V
AUDIO_IN_L
+24V
+5VD
FLPY:DIR
FLPY:MTR1
FLPY:MTR0
FLPY:TRK0
FLPY:DENS
To/From RECEXT_REF_IO
From CAI IOUT
GPIO0
To MF I/O EXT_TRIG
From CAI QOUT
From CAI SYNC_TDMA
J24
GPIB_D1
GPIB_D5
GPIB_D2
GPIB_D6
GPIB_D3
GPIB_D7
GPIB_D4
GPIB_D8
GPIB_EOI
GPIB_REN
GPIB_DAV
GPIB_NRFD
FLPY:INDEX
FLPY:STEP
FLPY:RD
FLPY:WD
FLPY:DSKCHG
GPIB_D1
GPIB_SRQ
GPIB_D2
GPIB_ATN
GPIB_D3
GPIB_D4
GPIB_D5
GPIB_NDAC
GPIB_IFC
GPIB_SRQ
GPIB_ATN
RP
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
A12
A13
A14
A15
A16
B1
B2
B3
B4
B5
B6
B7
B8
B9
B10
B11
B12
B13
B14
B15
B16
C1
C2
C3
C4
C5
C6
C7
C8
C9
C10
C11
C12
C13
C14
C15
C16
ST 48 PIN DIN F
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
ST 24 PIN RBN M
GPIB Cable Header
GPIB_EOI
GPIB_D6
GPIB_DAV
GPIB_D7
GPIB_NRFD
GPIB_D8
GPIB_NDAC
GPIB_REN
GPIB_IFC
+5VD
D
042M-018
Figure 5-3 Backplane PCB Assy (cont)
(0000-4236-100-A) (42A1A1A1)
5-7
+15V
D
ST 96 PIN DIN F
+15V
D
ST 96 PIN DIN F
SA8
SA5
SA2
SA0
IOCS16
MEMCS16
SD0
SD2
SD5
SD8
SD10
SD13
RESET1
DRQ6
DACK6
TC
IOCHCK
+15V
D
20
19
18
17
16
15
14
13
12
11
20
19
18
17
16
15
14
13
12
11
1
2
3
4
5
6
7
8
9
10
1
2
3
4
5
6
7
8
9
10
6
5
10 Amps
+5VD
+5VD
3
FL4
BNX002-01
4
+15V
+5D
2
6
5
+24V
1
ST 10 PIN RBN M
5 Amps
+5VA
3
FL2
BNX002-01
4
2
6
5
Power Supply
Test Points
1
1 Amp
-15V
3
FL3
BNX002-01
4
1
-15
2
6
5
DACK7
+5VA
D
+5VD
+5VA
+5.1VAUX
+15V
-15V
EMI Filters
+24V
CR10-NR
RESET2
+15V
Spare
Spare
Gnd
Gnd
+5V
+5VA
-15V
-15V
R9
SBHE
IOCHRDY
B2
B5
B8
B11
B22
B25
B28
B31
Gnd
5.62K
1/10W
IRQ10
1
2
3
4
5
6
7
8
9
10
2
ST 48 PIN DIN F
2
Pwr On
Pwr Off
-15V
-15V
AC Power Fail
N/C
N/C
N/C
BATTERY+
BATTERY-15V
-15V
N/C
Gnd
Gnd
Fan ON/OFF
Spare
+5.1Vaux
R.I.
DC OK
N/C
J12
DS6
LVDS16+
SD11
SD14
1
LVDS14+
1
A13
A14
A15
A16
A17
A18
A19
A20
B13
B14
B15
B16
B17
B18
B19
B20
C13
C14
C15
C16
C17
C18
C19
C20
ST DIN TYPE M 24/8 M
CR10-NR
LVDS15+
LVDS12+
SD3
SD6
R.I.
+5A
R5
LVDS13+
LVDS10+
IORD
GMEMR
3.32K
LVDS11+
LVDS8+
SA6
SA3
3
FL1
BNX002-01
4
1
LVDS9+
LVDS6+
+15V
DS5
LVDS7+
LVDS4+
DRQ7
+5.1VAUX
2
LVDS5+
LVDS2+
GPIO1
5 Amps
CR10-NR
LVDS3+
LVDS16-
+5VA
RSTDRV
R4
CAI_AUDIO_CLK
CAI_AUDIO_DATA
CAI_AUDIO_SYNC
CAI_DEMOD_CLK
CAI_DEMOD_DATA
CAI_DEMOD_SYNC
TC
IOCHCK
LVDS1+
LVDS14-
3.32K
CAI_40MHZ
LVDS15-
LVDS12-
BATTERY+
SD8
SD9
SD10
SD11
SD12
SD13
SD14
SD15
MEMCS16
2
CAI_AUDIO_CLK
CAI_AUDIO_DATA
CAI_AUDIO_SYNC
CAI_DEMOD_CLK
CAI_DEMOD_DATA
CAI_DEMOD_SYNC
TC
IOCHCK
SA8
SA5
SA2
SA0
IOCS16
MEMCS16
SD0
SD2
SD5
SD8
SD10
SD13
LVDS13-
BALE
0WS
SA1
SA0
AEN
BALE
0WS
IOWR
IORD
SBHE
IOCHRDY
DS4
MF_40MHZ
DACK7
LVDS11-
LVDS8LVDS10-
AEN
1
SA8
SA5
SA2
SA0
IOCS16
MEMCS16
SD0
SD2
SD5
SD8
SD10
SD13
RESET2
LVDS9-
LVDS6-
750
DACK6
SBHE
IOCHRDY
LVDS7-
LVDS4-
PWR_ON
PWR_OFF
BATTERY-
CR10-NR
RESET1
SYNC0
SYNC1
SYNC2
SYNC3
LVDS5-
LVDS2-
J19 Power
Supply
Interface
RCN2
50 Ohm/50PF
R11
SBHE
IOCHRDY
SD11
SD14
LVDS3-
SIGNAL16
RCN1
50 Ohm/50PF
2
SYNC0
SYNC1
SYNC2
SYNC3
SD3
SD6
LVDS1-
SIGNAL14
DS3
SD11
SD14
IORD
GMEMR
SIGNAL15
SIGNAL12
1
SD3
SD6
SA6
SA3
SIGNAL13
SIGNAL10
CR10-NR
IORD
GMEMR
DRQ7
SIGNAL11
SIGNAL8
750
SA6
SA3
+5VA
RSTDRV
SIGNAL9
SIGNAL6
IOCS16
SD0
SD1
SD2
SD3
SD4
SD5
SD6
SD7
R10
DRQ6
BALE
0WS
SIGNAL7
SIGNAL4
IOCHCK
SA9
SA8
SA7
SA6
SA5
SA4
SA3
SA2
2
RSTDRV
AEN
SIGNAL5
SIGNAL2
+5VD
IRQ11
SA9
SA7
SA4
SA1
IOWR
GMEMW
SD1
SD4
SD7
SD9
SD12
SD15
J17
CPU
DS2
+5VA
SYNC_TDMA
SIGNAL3
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
A12
A13
A14
A15
A16
B1
B2
B3
B4
B5
B6
B7
B8
B9
B10
B11
B12
B13
B14
B15
B16
C1
C2
C3
C4
C5
C6
C7
C8
C9
C10
C11
C12
C13
C14
C15
C16
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
A12
A13
A14
A15
A16
A17
A18
A19
A20
A21
A22
A23
A24
A25
A26
A27
A28
A29
A30
A31
A32
B1
B2
B3
B4
B5
B6
B7
B8
B9
B10
B11
B12
B13
B14
B15
B16
B17
B18
B19
B20
B21
B22
B23
B24
B25
B26
B27
B28
B29
B30
B31
B32
C1
C2
C3
C4
C5
C6
C7
C8
C9
C10
C11
C12
C13
C14
C15
C16
C17
C18
C19
C20
C21
C22
C23
C24
C25
C26
C27
C28
C29
C30
C31
C32
1
BALE
0WS
IOUT
SIGNAL1
-15V
750
NC
NC
AEN
QOUT
IRQ11
SA9
SA7
SA4
SA1
IOWR
GMEMW
SD1
SD4
SD7
SD9
SD12
SD15
CAI
J27
CR10-NR
NC
+5VD
J16
CAI
R12
NC
CRY_BATTERY
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
A12
A13
A14
A15
A16
A17
A18
A19
A20
A21
A22
A23
A24
A25
A26
A27
A28
A29
A30
A31
A32
B1
B2
B3
B4
B5
B6
B7
B8
B9
B10
B11
B12
B13
B14
B15
B16
B17
B18
B19
B20
B21
B22
B23
B24
B25
B26
B27
B28
B29
B30
B31
B32
C1
C2
C3
C4
C5
C6
C7
C8
C9
C10
C11
C12
C13
C14
C15
C16
C17
C18
C19
C20
C21
C22
C23
C24
C25
C26
C27
C28
C29
C30
C31
C32
-15V
2
IRQ10
SA9
SA7
SA4
SA1
IOWR
GMEMW
SD1
SD4
SD7
SD9
SD12
SD15
J15
Multi-I/O
Bus
Interface
DS1
+5VD
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
A12
A13
A14
A15
A16
A17
A18
A19
A20
A21
A22
A23
A24
A25
A26
A27
A28
A29
A30
A31
A32
B1
B2
B3
B4
B5
B6
B7
B8
B9
B10
B11
B12
B13
B14
B15
B16
B17
B18
B19
B20
B21
B22
B23
B24
B25
B26
B27
B28
B29
B30
B31
B32
C1
C2
C3
C4
C5
C6
C7
C8
C9
C10
C11
C12
C13
C14
C15
C16
C17
C18
C19
C20
C21
C22
C23
C24
C25
C26
C27
C28
C29
C30
C31
C32
1
-15V
ST 96 PIN DIN F
042M-019
Figure 5-3 Backplane PCB Assy (cont)
(0000-4236-100-A) (42A1A1A1)
5-8
10
9
8
7
6
5
4
3
2
1
COM2:TX
COM2:RX
LPT:PE
LPT:SLCT
LPT:AFD
LPT:D1
LPT:D4
LPT:D7
VGA:HSYNC
J13
VGA:VSYNC
GPIO4
GPIO2
GPIO3
ETH:LINK_LED
ETH:TX_LED
ETH:TX+
ETH:TXETH:RX+
ETH:RXCOM1:CTS
COM1:DSR
COM1:DCD
COM2:CTS
COM2:DSR
COM2:DCD
LPT:INIT
LPT:SLIN
LPT:STROBE
LPT:D0
LPT:D3
LPT:D6
VGA:RED
VGA:GREEN
VGA:BLUE
GPIO0
GPIO1
ETH:PU_6
ETH:PU_8
D
ST 96 PIN DIN F
R.I.
C1
C2
C3
C4
C5
C6
C7
C8
C9
C10
C11
C12
C13
C14
C15
VGA:RED
VGA:GREEN
VGA:BLUE
VGA:HSYNC
VGA:VSYNC
mntg M1
mntg M2
PWR_ON
PS2_KEYCLK
PS2_KEYDATA
KEY:CLK
KEY:DATA
+5.1VAUX
RSTDRV
R6
ETH:LINK_LED
D
W3
USB1USB1+
A1
A2
A3
A4
USB2USB2+
B1
B2
B3
B4
SHLD
USB
+5VD
ETH:TX_LED
ETH:10/100
RA 4 PIN DUAL USB
ETH:TX+
ETH:TXETH:RX+
ETH:PU_6
W4
J23
SHLD
MTG
MTG
MTG
MTG
MTG
1
2
3
4
5
6
7
8
9
10
+5VD
RA 25F/9M/15HDF DSUB
+5VD
B6
B4
B2
J10
FP
13
ST 10 PIN RBN M
COM1:TX
COM1:RX
COM1:DSR
COM1:RTS
COM1:CTS
COM1:RI
RSVD
W5
6.
R7
ETH:RXETH:PU_8
511
10
9
1
2
3
4
5
6
7
8
12
11
SHLD
G
RA RJ45 W/LEDS
TEST POINTS
W1
+5V
DATA
J25
RP
ETH
Y
SHLD
14
USB1+
USB1USB2+
USB2-
B1
B2
B3
B4
B5
B6
B7
B8
B9
COM1:DCD
COM1:RX
COM1:TX
COM1:DTR
RSVD
GND
M5
M4
M3
M2
M1
ETH:10/100
CLK
ST 10 PIN RBN M
GPIO5
C80
GPIO6
B5
B3
B1
MOUSE:CLK
MOUSE:DATA
C79
47PF
GPIO7
C78
BACKLIGHT
J22 KEY&
MOUS
RA 6 PIN DUAL PS2 F
A5 CLK
A6
RSVD
A3 GND
A4
+5V
A1 DATA
A2
RSVD
47PF
PWR_OFF
W2
+5VD
C77
47PF
BEEP
LPT:STROBE
LPT:D0
LPT:D1
LPT:D2
LPT:D3
LPT:D4
LPT:D5
LPT:D6
LPT:D7
LPT:ACK
LPT:BUSY
LPT:PE
LPT:SLCT
LPT:AFD
LPT:ERR
LPT:INIT
LPT:SLIN
PARALLEL
COM1
VGA
47PF
COM1:RTS
COM1:DTR
COM1:RI
COM2:RTS
COM2:DTR
COM2:RI
LPT:ACK
LPT:BUSY
LPT:ERR
LPT:D2
LPT:D5
J21
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
A12
A13
A14
A15
A16
A17
A18
A19
A20
A21
A22
A23
A24
A25
M3 mntg
M4 mntg
KEY:CLK
KEY:DATA
MOUSE:CLK
MOUSE:DATA
J20
CPU
M1
M2
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
A12
A13
A14
A15
A16
A17
A18
A19
A20
A21
A22
A23
A24
A25
A26
A27
A28
A29
A30
A31
A32
B1
B2
B3
B4
B5
B6
B7
B8
B9
B10
B11
B12
B13
B14
B15
B16
B17
B18
B19
B20
B21
B22
B23
B24
B25
B26
B27
B28
B29
B30
B31
B32
C1
C2
C3
C4
C5
C6
C7
C8
C9
C10
C11
C12
C13
C14
C15
C16
C17
C18
C19
C20
C21
C22
C23
C24
C25
C26
C27
C28
C29
C30
C31
C32
M3
M4
+5VD
511
R8
511
6.
J11
COM2:DCD
COM2:DSR
COM2:RX
COM2:RTS
COM2:TX
COM2:CTS
COM2:DTR
COM2:RI
1
2
3
4
5
6
7
8
9
10
ST 10 PIN RBN M
042M-020
Figure 5-3 Backplane PCB Assy (cont)
(0000-4236-100-A) (42A1A1A1)
5-9
CAUTION:
CONTAINS PARTS AND ASSEMBLIES
SUSCEPTIBLE TO DAMAGE BY
ELECTROSTATIC DISCHARGE (ESD).
(7010-4234-000)
(7010-4238-700)
042M-010
Figure 5-4 Front Panel Audio PCB Assy
(7010-4234-000-H) (7010-4238-700-A) (42A1A1A2)
5-10
CAUTION:
CONTAINS PARTS AND ASSEMBLIES
SUSCEPTIBLE TO DAMAGE BY
ELECTROSTATIC DISCHARGE (ESD).
042M-011
Figure 5-5 Rear Panel PCB Assy
(7010-4233-800-B) (42A1A1A3)
5-11
CAUTION:
CONTAINS PARTS AND ASSEMBLIES
SUSCEPTIBLE TO DAMAGE BY
ELECTROSTATIC DISCHARGE (ESD).
042M-013
Figure 5-6 Front Panel Assy
(7005-4243-700-F) (42A1A1A4)
5-12
(7005-4243-500)
(7010-4238-800)
Figure 5-7 CPU Adapter Assy
(7005-4243-500-F) (7010-4238-800-C) (42A1A1A5)
5-13
CAUTION:
CONTAINS PARTS AND ASSEMBLIES
SUSCEPTIBLE TO DAMAGE BY
ELECTROSTATIC DISCHARGE (ESD).
042M-013
Figure 5-8 Power Supply Assy
(7005-4243-400-D) (42A1A1A6)
5-14
CAUTION:
CONTAINS PARTS AND ASSEMBLIES
SUSCEPTIBLE TO DAMAGE BY
ELECTROSTATIC DISCHARGE (ESD).
042M-013
Figure 5-9 Power Termination Assy
(7005-4242-500-K) (42A1A1A7)
5-15
042M-032
Figure 5-10 Floppy Drive Assy
(7110-4244-400-A) (42A1A1A8)
5-16
CAUTION:
CONTAINS PARTS AND ASSEMBLIES
SUSCEPTIBLE TO DAMAGE BY
ELECTROSTATIC DISCHARGE (ESD).
BAR CODE
042M-012
Figure 5-11 Disk I/O PCB Assy
(7010-4232-800-D) (42A1A1A9)
5-17
CAUTION:
CONTAINS PARTS AND ASSEMBLIES
SUSCEPTIBLE TO DAMAGE BY
ELECTROSTATIC DISCHARGE (ESD).
042M-007
Figure 5-12 Rear Panel Assy
(7005-4243-800-D) (42A1A2)
5-18
CAUTION:
CONTAINS PARTS AND ASSEMBLIES
SUSCEPTIBLE TO DAMAGE BY
ELECTROSTATIC DISCHARGE (ESD).
042M-006
Figure 5-13 Attenuator Assy
(7005-4243-100-F) (42A1A3)
5-19
CAUTION:
CONTAINS PARTS AND ASSEMBLIES
SUSCEPTIBLE TO DAMAGE BY
ELECTROSTATIC DISCHARGE (ESD).
042M-009
Figure 5-14 Generator Assy
(7005-4242-600-E) (7005-4442-500-A) (7005-4444-200-A) (7005-4249-000-A) (42A1A4)
5-20
CAUTION:
CONTAINS PARTS AND ASSEMBLIES
SUSCEPTIBLE TO DAMAGE BY
ELECTROSTATIC DISCHARGE (ESD).
042M-004
Figure 5-15 IF/Video PCB Assy
(7010-4236-800-D) (42A1A5)
5-21
CAUTION:
CONTAINS PARTS AND ASSEMBLIES
SUSCEPTIBLE TO DAMAGE BY
ELECTROSTATIC DISCHARGE (ESD).
042M-003
Figure 5-16 Multifunction I/O PCB Assy
(7010-4236-700-D) (42A1A6)
5-22
CAUTION:
CONTAINS PARTS AND ASSEMBLIES
SUSCEPTIBLE TO DAMAGE BY
ELECTROSTATIC DISCHARGE (ESD).
042M-008
Figure 5-17 Receiver Assy
(7005-4248-100-B) (42A1A7)
5-23
CAUTION:
CONTAINS PARTS AND ASSEMBLIES
SUSCEPTIBLE TO DAMAGE BY
ELECTROSTATIC DISCHARGE (ESD).
(REV F)
ID LABEL
BAR CODE
(REV F)
042M-002
Figure 5-18 CAI PCB Assy
(7010-4232-900-K) (42A1A8)
5-24
CAUTION:
CONTAINS PARTS AND ASSEMBLIES
SUSCEPTIBLE TO DAMAGE BY
ELECTROSTATIC DISCHARGE (ESD).
042M-001
Figure 5-19 Handle Assy
(7110-4246-800-C) (42A1A9)
5-25
T H I S P A G E I N T E N T I ON A L L Y L E F T B L A N K .
5-26
APPENDIX A - I/O CONNECTORS AND PIN-OUT TABLES
A-1
TABLE OF I/O CONNECTORS
CONNECTOR NAME
CONNECTOR TYPE
SIGNAL IN/OUT
SIGNAL TYPE
MIC/ACC
8 Pin DIN
IN/OUT
See Pin-Out Table
AUX RF OUT
BNC
OUT
RF
ANTENNA
TNC
IN
RF, 0.25 W CW MAX
AC LINE IN
AC Power
IN
120/240 VAC
OUT
1 2 V d c, 2 4 t o 3 0 V d c
DC IN
GPIB (IEEE-488)
24 Pin Champ
IN/OUT
See Pin-Out Table
SA IF
BNC
OUT
SPECTRUM ANALYZER IF
SA VIDEO
BNC
OUT
SPECTRUM ANALYZER
DETECTOR OUT
Q OUT
BNC
OUT
NOT USED
I OUT
BNC
OUT
NOT USED
SYNC
BNC
IN
EXT TRIG
BNC
IN
AUX OSCILLOSCOPE
TRIGGER IN
EXT REF IO
BNC
IN/OUT
FREQ STD IN/OUT
A-1
A-2
PIN-OUT TABLE FOR MIC CONNECTOR
PIN NUMBER
SIGNAL NAME
SIGNAL TYPE
I/O
1
GND
GND
GND
2
GND
GND
GND
3
MIC IN
IN
DYNAMIC/ELECTRET
4
PTT
IN
GND=PUSH
5
AUDIO 2(+)
OUT
AUDIO FREQ OUT #2
6
AUDIO 2 GND
GND
AUDIO FREQ OUT #2 GND
1
A-2
A-3
PIN-OUT TABLE FOR AUDIO I/O CONNECTOR
PIN NUMBER
SIGNAL NAME
SIGNAL TYPE
I/O
1
AUDIO IN (+)
IN
AUDIO FREQ IN,
BAL/UNBAL, (+)
2
AUDIO IN (-)
IN/GND
AUDIO FREQ IN,
BAL/UNBAL, (-)/GND
3
AUDIO 1 (+)
OUT
AUDIO FREQ OUT #1,
BAL/UNBAL, (+)
4
AUDIO 1 (-)
OUT/GND
AUDIO FREQ OUT #1,
BAL/UNBAL, (-)/GND
5
AUDIO 2 (+)
OUT
AUDIO FREQ OUT #2
6
AUDIO 2 GND
GND
AUDIO FREQ OUT #2 GND
1
A-3
A-4
PIN-OUT TABLE FOR GPIB CONNECTOR
PIN NUMBER
ASSIGNMENT
PIN NUMBER
ASSIGNMENT
1
DIO 1
13
DIO 5
2
DIO 2
14
DIO 6
3
DIO 3
15
DIO 7
4
DIO 4
16
DIO 8
5
EOI
17
REN
6
DAV
18
DIGITAL GND
7
NFRD
19
DIGITAL GND
8
NDAC
20
DIGITAL GND
9
IFC
21
DIGITAL GND
10
SRO
22
DIGITAL GND
11
ATN
23
DIGITAL GND
12
DIGITAL GND
24
DIGITAL GND
1
13
12
24
A-4
A-5
PIN-OUT TABLE FOR RS-232 CONNECTOR
PIN NUMBER
ASSIGNMENT
SIGNAL NAME
1
INPUT
DATA CARRIER DETECT (DCD)
2
INPUT
RECEIVE DATA (RX)
3
OUTPUT
TRANSMIT DATA (TX)
4
OUTPUT
DATA TERMINAL READY (DTR)
5
POWER
DIGITAL GND
6
INPUT
DATA SET READY (DSR)
7
OUTPUT
REQUEST TO SEND (RTS)
8
INPUT
CLEAR TO SEND (CTS)
9
INPUT
RING INDICATOR (RI0)
1
5
6
9
A-5
A-6
PIN-OUT TABLE FOR PRINTER CONNECTOR
PIN NUMBER
ASSIGNMENT
SIGNAL NAME
1
BI-DIRECTIONAL
/STROBE
2
BI-DIRECTIONAL
PD0
3
BI-DIRECTIONAL
PD1
4
BI-DIRECTIONAL
PD2
5
BI-DIRECTIONAL
PD3
6
BI-DIRECTIONAL
PD4
7
BI-DIRECTIONAL
PD5
8
BI-DIRECTIONAL
PD6
9
BI-DIRECTIONAL
PD7
10
INPUT
/ACK
11
INPUT
BUSY
12
INPUT
PE
13
INPUT
SLCT
14
BI-DIRECTIONAL
/AFD
15
INPUT
/ERR
16
BI-DIRECTIONAL
/INIT
17
BI-DIRECTIONAL
/SLIN
18
POWER
GND
19
POWER
GND
20
POWER
GND
21
POWER
GND
22
POWER
GND
23
POWER
GND
24
POWER
GND
1
13
14
25
A-6
A-7
PIN-OUT TABLE FOR TEST PORT CONNECTOR
PIN NUMBER
ASSIGNMENT
PIN NUMBER
ASSIGNMENT
1
DIGITAL IN 1
9
DIGITAL OUT 1
2
DIGITAL IN 2
10
DIGITAL OUT 2
3
DIGITAL IN 3
11
DIGITAL OUT 3
4
DIGITAL IN 4
12
DIGITAL OUT 4
5
DIGITAL IN 5
13
SERIAL OUT
6
N/C
14
N/C
7
GND
15
GND
8
PGM V+ OUT
1
88
9
15
A-7
A-8
PIN-OUT TABLE FOR VGA CONNECTOR
PIN NUMBER
ASSIGNMENT
PIN NUMBER
ASSIGNMENT
1
RED VIDEO
9
N/C
2
GREEN VIDEO
10
SYNC RETURN
3
BLUE VIDEO
11
MONITOR ID 0
4
MONITOR ID 2
12
MONITOR ID 1
5
GND
13
HORIZONTAL SYNC
6
RED RETURN
14
VERTICAL SYNC
7
GREEN RETURN
15
MONITOR ID 3
8
BLUE RETURN
5
1
6
10
15
11
A-8
A-9
PIN-OUT TABLE FOR MOUSE CONNECTOR
PIN NUMBER
SIGNAL NAME
SIGNAL TYPE
I/O
1
MDATA
B i - D i r e ct i o n a l
M o u se D a t a
2
N/C
3
GND
Power
GND
4
+5 V
Power
Supply Voltage
5
MCLK
Bi-Directional
Mouse Clock
6
N/C
Shell
Earth Ground
5
3
1
6
4
2
A-9
Chassis Ground
A-10
PIN-OUT TABLE FOR KEYBOARD CONNECTOR
PIN NUMBER
SIGNAL NAME
SIGNAL TYPE
I/O
1
KBDATA
B i - D i r e ct i o n a l
K e yb o a r d D a t a
2
N/C
3
GND
Power
GND
4
+5 V
Power
Supply Voltage
5
KBCLK
B i - D i r e ct i o n a l
K e yb o a r d C l o ck
6
N/C
Shell
Earth Ground
5
3
1
6
4
2
A-10
Chassis Ground
A-11
PIN-OUT TABLE FOR USB CONNECTOR
PIN NUMBER
SIGNAL NAME
SIGNAL TYPE
1
VCC
PWR
2
(-) DATA
DATA
I/O
3
(+) DATA
DATA
I/O
4
GND
PWR
5
VCC
PWR
6
(-) DATA
DATA
I/O
7
(+) DATA
DATA
I/O
8
GND
PWR
5
1
A-11
I/O
A-12
PIN-OUT TABLE FOR ETHERNET CONNECTOR
PIN NUMBER
SIGNAL NAME
SIGNAL TYPE
I/O
1
TX (+)
DATA
OUT
2
TX (-)
DATA
OUT
3
RX (+)
DATA
IN
4
RX (-)
DATA
IN
5
GND
GND
GND
6
GND
GND
GND
7
GND
GND
GND
8
GND
GND
GND
1
A-12
APPENDIX B - REPACKING FOR SHIPMENT
REPACKING FOR SHIPPING
A e r o f l e x T e s t S e t s r e t u r n e d t o f a c t o r y f o r ca l i b r a t i o n , se r vi ce o r r e p a i r m u st b e r e p a cka g e d a n d
sh i p p e d su b j e ct t o t h e f o l l o w i n g c o n d i t i o n s :
AUTHORIZATION
D o n o t r e t u r n a n y p r o d u c t s t o f a c t o r y w i t h o u t a u t h o r i za t i o n f r o m A e r o f l e x C u st o m e r S e r vi ce
Department.
CONTACT:
Aeroflex
C u s t o m e r S e r v i ce D e p t .
10200 West York Street
Wichita, Kansas 67215
Telephone:
FAX:
Email:
(800) 835-2350
(316) 524-2623
se r vi ce @ a e r o f l e x. co m
TAGGING TEST SETS
All test sets must be tagged with:
O
O w n e r ’ s i d e n t i f i c a t i o n a n d a d d r e s s.
O
Nature of service or repair required.
O
Model No. and Serial No.
SHIPPING CONTAINERS
T e st S e t s m u st b e r e p a c k a g e d i n o r i g i n a l s h i p p i n g c o n t a i n e r s u s i n g A e r o f l e x p a c k i n g m a t e r i a l s. I f
o r i g i n a l sh i p p i n g c o n t a i n e r s a n d m a t e r i a l s a r e n o t a v a i l a b l e , c o n t a c t A e r o f l e x C u s t o m e r S e r v i ce
Department for shipping instructions.
FREIGHT COSTS
A l l f r e i g h t c o s t s o n n o n - w a r r a n t y s h i p m e n t s a r e a ssu m e d b y t h e cu st o m e r . ( S e e “ W a r r a n t y P a cke t ”
f o r f r e i g h t c h a r g e p o l i c y o n w a r r a n t y c l a i m s. )
REPACKING PROCEDURE
O
M a ke su r e b o t t o m p a c k i n g m o l d i s s e a t e d o n f l o o r o f s h i p p i n g c o n t a i n e r .
O
A d j u st h a n d l e t o l a y u n l o c k e d a g a i n s t T e s t S e t a s s h o w n .
O
Carefully wrap Test Set with polyethylene sheeting.
O
Place Test Set into shipping container, making sure Test Set is securely seated in bottom
p a cki n g m o l d .
O
P l a ce t o p p a c k i n g m o l d o v e r t o p o f T e s t S e t a n d p r e s s d o w n u n t i l m o l d r e s t s s o l i d l y o n
bottom packing mold.
O
C l o se sh i p p i n g c o n t a i n e r l i d s a n d s e a l w i t h s h i p p i n g t a p e o r a n i n d u s t r i a l s t a p l e r . T i e a l l
s i d e s o f c o n t a i n e r w i t h b r e a k r e s i st a n t r o p e , t w i n e o r e q u i va l e n t .
B-1
TOP PACKING
MOLD
TEST INSTRUMENT
WRAPPED WITH
POLYETHYLENE
SHEETING
HOLD DOWN
STRAP
BOTTOM PACKING
MOLD
SHIPPING CONTAINER
F i g u r e B - 1 R e p a cki n g f o r S h i p m e n t
B-2
APPENDIX C - CONTROLS AND CONNECTORS
C-1
CONTROLS
4
1
15
5
17
14
6
13
2
16
12
7
9
10
11
8
3
1
HELP Key
2
SOFT FUNCTION Keys
3
RETURN Key
4
MODE Key
5
TAB
6
SHIFT Key
7
BKSP
8
HOLD Key
F u t u r e U s e : C o n t e x t S e n si t i ve H e l p o n S cr e e n .
F1 through F7, screen dependent keys whose functions are displayed immediately
adjacent to each key on the LCD.
Used in field select mode to return to the previous menu.
D i s p l a y s a l i s t o f m a j o r t e st se t o p e r a t i o n s f o r t h e u se r t o se l e ct .
M o v e s t h e f i e l d c u r s o r t o t h e n e x t e d i t a b l e f i e l d o n t h e s c r e e n w h e n f i e l d s e l e ct i o n i s
active.
Allows the alternate value of a key to be selected. Shift LED illuminates when
alternative value is active.
Backspaces the present cursor position and deletes one space.
F u t u r e U se
C-1
9
ESC Key
10
ENTER Key
11
POWER
12
SQUELCH KNOB
13
VOLUME KNOB
14
SPINNER KNOB
15
ARROW Keys
16
DATA ENTRY Keys
17
SHIFT, MODE KEY combination
Escapes the active edit field without saving the new data entry.
Generates a new line when pressed in a text entry field. If pressed in a data edit
field, the data value is evaluated, set and the edit process is ended.
P o w e r s t h e 2 9 7 5 O N / O F F w h e n t h e M a i n P o w e r S w i t ch i s i n t h e O N p o si t i o n .
A d j u s t t h e t h r e s h o l d f o r r e ce i ve r sq u e l ch .
Rotate clockwise (cw) or counterclockwise (ccw) to adjust audio volume level on the
speaker.
Used to increment and decrement data values in an active edit field and change
c u r s o r f i e l d s . R o t a t e s c l o ckw i se ( cw ) a n d co u n t e r cl o ckw i se ( ccw ) .
Moves the cursor to a new field when pressed in field select mode. Up and down
a r r o w k e y s i n c r e m e n t s o r d e c r e m e n t s t h e c u r r e n t d i g i t i n e d i t m o d e r e s p e c t i v e l y.
L e f t a n d r i g h t k e y s m o v e t h e se l e ct e d ch a r a ct e r cu r so r l e f t o r r i g h t r e sp e ct i ve l y.
Used to enter valid data entry depending on the field being edited.
Accesses a pull-down menu for display option selection.
C-2
C-2
CONNECTORS
C- 2- 1
2975 FRO NT PANEL
10
9
1
2
2
1
TEST
2
SCOPE CH1 and CH2
3
5
6
7
8
Future Use: Custom Radio Interfacing
Inputs to the Oscilloscope
100V maximum input!
connect to AC line!
3
4
Use caution when probing live circuits! DO NOT
DVM
Input to the Digital Voltmeter
100V maximum input!
connect to AC line!
4
MIC
5
AUDIO I/O
6
GEN
Use caution when probing live circuits! DO NOT
Input to the 2975 Audio System
Input and Output to the 2975 Audio System
R F G e n e r a t o r O u t p u t . L E D i n d i ca t e s p o r t se l e ct e d f o r g e n e r a t o r o u t p u t .
D O N O T t r a n s m i t R F i n t o t h i s co n n e ct o r !
7
T/R
R F G e n e r a t o r O u t p u t a n d R F R e ce i ve r I n p u t ( F u l l D u p l e x) . L E D i n d i ca t e s T / R
Connector selected for generator output.
DO NOT exceed 50 W continuous RF power!
high power transmitters!
C-3
U s e c a u t i o n w h e n c o n n e ct i n g
8
ANT
R F R e c e i v e r I n p u t ( 5 0 W f o r 3 0 se co n d s m a xi m u m )
D O N O T t r a n s m i t R F i n t o t h i s co n n e ct o r !
9
FLOPPY DISK DRIVE
10
LCD
3 ½ ” f l o p p y d i s k d r i v e f o r co p y i n g d a t a a n d p r o g r a m f i l e s t o / f r o m t h e 2 9 7 5 syst e m .
Liquid Crystal Display for user displays and feedback
C-4
C-2-2
2975 REAR PANEL
17
18
16
14
15
(Later versions only)
6
1
2
10
3
4
11
12
13
5
7
8
9
1
MAIN POWER SWITCH
System AC Input
2
BATTERY SENSE
Future Use
3
PARALLEL
Future Use
4
RS-232
Serial I/O Connection with the IFR 2975
5
VIDEO
External VGA Monitor Connector
6
MOUSE
Control connection designed for PS-2 compatible mouse. Mouse controls cursor for
point and click control of screen items in addition to front panel keyboard operation.
7
KEYBOARD
Control connection designed for PS-2 compatible keyboard. Keyboard controls
function of unit in addition to front panel keyboard operation.
8
USB
Future Use: Serial connection with the IFR 2975
9
ETHERNET
Network connection with the IFR 2975
10
SYNC
Future Use
C-5
11
EXT TRIG
12
EXTERNAL RF I/O
13
GPIB
14
A
15
B
16
TYPE I INTERFACE
17
SPECTRUM ANALYZER IF
18
SPECTRUM ANALYZER VIDEO
External Oscilloscope Trigger
10 MHz Timebase In and Out
F u t u r e U se
F u t u r e U se
F u t u r e U se
Not Used
I n t e r m e d i a t e F r e q u e n c y O u t p u t ( 1 0 . 7 M H z)
Video Output
C-6
APPENDIX D - SPECIFICATIONS
D-1
O
A w a r m - u p t i m e o f 5 m i n u t e s i s r e q u i r e d f o r t h e f o l l o w i n g p e r f o r m a n ce
requirements.
O
RF measurements are referenced to 50 Ω.
O
Accuracy and Resolution stated in percent are referenced to measured or
se l e c t e d v a l u e u n l e s s o t h e r w i s e s t a t e d .
O
Where resolution exceeds accuracy, resolution takes precedence.
O
Specifications and features are subject to change without notice.
GENERATOR (Receiver Test)
FREQUENCY:
D-2
Range:
1 MHz to 2.7 GHz
Resolution:
1 Hz
Accuracy:
Same as Time Base
AMPLITUDE
GEN CONNECTOR:
Range:
+10 to -110 dBm
R e so l u t i o n :
0.1 dB
Accuracy:
±1.5 dB
T/R CONNECTOR:
Range:
-30 to -137 dBm
R e so l u t i o n :
0.1 dB
A ccu r a c y :
±1 dB (<1.3 GHz >-120 dBm, >1.3 GHz >-110 dBm)
SPECTRAL PURITY:
Harmonic Spurious:
-25 dBc max
N o n - H a r m o n i c S p u r i o u s:
-50 dBc max <1.5 GHz
-30 dBc max >1.5 GHz
Residual FM:
< 1 5 H z r m s ( P o st D e t e ct i o n B W = 3 0 0 H z t o 3 kH z)
S S B P h a s e N o i s e ( 2 0 k H z o f f se t ) :
- 1 0 0 d B c/ H z t yp i ca l
- 9 2 d B c/ H z m a x
Residual AM:
0 . 1 % ( P o st D e t e ct i o n B W = 3 0 0 H z t o 3 kH z)
FREQUENCY AGILITY:
1 0 m s < 1 0 0 M H z st e p ( t o < 1 0 0 H z f r e q u e n cy e r r o r )
GEN Connector:
Connector Protection:
5 0 W ( + 4 7 d B m ) f o r 3 0 se c.
Threshold:
+20 dBm (nominal)
D-1
D-3
GENERATOR MODULATOR
FM:
D-4
Deviation Accuracy:
3 % , + r e si d u a l , ± L S D ( 1 kH z t h r o u g h 2 0 kH z
deviation, 1 through 10 kHz rate)
5 % , + r e si d u a l , ± L S D ( > 2 0 kH z d e vi a t i o n ,
1 t h r o u g h 2 0 kH z r a t e )
D e vi a t i o n R a n g e :
Off, 10 Hz - 40 kHz deviation
Deviation Resolution:
10 Hz
Modulation Rate Bandwidth:
DC to 20 kHz (MOD 1, MOD 2, and Audio in
[ S I N A D ] u n b a l a n ce d )
5 0 H z t o 2 0 kH z ( A u d i o i n [ S I N A D ] b a l a n ce d
and Mic in)
Modulation Distortion (THD):
1% (1 to 10 kHz, 6 kHz dev.)
2% (10 to 20 kHz, 6 kHz dev.)
E xt e r n a l M o d u l a t i o n S e n si t i vi t y:
1 V p p = 4 kH z D e vi a t i o n ± 1 0 %
D i g i t a l M o d u l a t i o n F o r m a t s:
C 4 F M a t 9 . 6 kb i t s/ s
FSK Error:
< 1 % t yp i ca l , < 2 % m a x
Project 25 Compliant Signals:
1011 Hz tone
5 % B E R ca l i b r a t i o n t o n e
S p e e ch ( r e p e a t e d t e st p h r a se s)
Silence
Voice from audio inputs
RECEIVER (Transmitter Test)
T/R CONNECTOR:
VSWR - T/R Connector:
< 1 . 2 : 1 t o 1 G H z, < 1 . 2 5 : 1 ( t yp i ca l ) > 1 G H z t o
2.7 GHz, 1.3:1 max
M a xi m u m P o w e r :
50 W continuous, 125 W 1 min/4 min off
Alarm:
A l e r t so u n d s a t 1 0 0 ° C P a d T e m p o r 1 3 5 W
BROADBAND POWER METER FUNCTIONS
(T/R CONNECTOR):
Frequency Range:
1 MHz to 2.7 GHz
Accuracy:
10% ±LSD
D yn a m i c R a n g e :
10 mW to 125 W
R e so l u t i o n :
3 digits
NARROWBAND POWER METER
FUNCTIONS (T/R CONNECTOR):
Frequency Range:
1 MHz to 2.7 GHz
Range:
1 µW (-30 dBm) to 125 W (+53 dBm)
R e so l u t i o n :
3 digits
Alarm:
A l e r t so u n d s a t 1 0 0 ° C P a d T e m p o r 1 3 5 W
D-2
ANT CONNECTOR
ANT Connector Protection:
+ 5 0 d B m f o r 3 0 se c.
Threshold:
+20 dBm (nominal)
ANTENNA RECEIVE LEVEL METER:
Range:
-100 to -10 dBm (25 kHz BW, no input attenuation
selected - +10 dBm max)
-80 to -10 dBm (200 kHz BW, no input attenuation
selected - +10 dBm max)
R e so l u t i o n :
0.1 dB
A ccu r a c y :
± 1 . 5 d B ( a f t e r C A L a n d n o U N C A L i n d i ca t i o n )
Frequency Range:
10 MHz to 2.7 GHz
FILTERS
IF Filters:
200 kHz wide band
25 kHz medium band
12.5 kHz narrow band
FREQUENCY COUNTER/FREQUENCY
ERROR METER:
Accuracy:
S a m e a s t i m e b a se ± L S D
In-Band Frequency Range:
½ selected receive bandwidth
R e so l u t i o n :
1 Hz
DYNAMIC RANGE LEVEL:
ANT Connector:
I n p u t L e ve l > - 6 0 d B m
T/R Connector:
I n p u t L e ve l > - 2 0 d B m
Broadband Frequency Response:
10 MHz to 2.7 GHz
FM DEVIATION METER:
Resolution:
10 Hz
Accuracy:
± 5 % , ± 2 L S D + r e si d u a l ( 1 2 . 5 kH z I F , 1 kH z r a t e ,
deviation >1 kHz and ≤5 kHz)
± 5 % , ± 2 L S D + r e si d u a l ( 2 5 kH z I F , 1 kH z r a t e ,
deviation >1 kHz and ≤10 kHz)
± 7 % , ± 2 L S D + r e si d u a l ( 2 0 0 kH z I F , 5 0 t o 2 0 kH z
rate, deviation >5 kHz and ≤40 kHz)
DYNAMIC RANGE:
Meter Ranges:
5 kHz, 10 kHz, 20 kHz, 50 kHz, 100 kHz
LEVEL:
T/R Connector:
I n p u t L e ve l > - 2 0 d B m
ANT Connector:
I n p u t L e ve l > - 6 0 d B m
Audio Frequency Bandwidth:
DC to 20 kHz
RF Bandwidth:
10 MHz to 2.7 GHz
Demod Output Sensitivity:
5 kHz deviation = 1 Vpp ± 15%
D-3
RECEIVE AUDIO FREQUENCY COUNTER
INPUT LEVEL RANGE:
ANT Connector:
I n p u t L e ve l > - 6 0 d B m
T/R Connector:
I n p u t L e ve l > - 2 0 d B m
MODULATION LEVEL RANGE:
FM:
500 Hz to 40 kHz deviation
FREQUENCY RANGE:
FM:
5 0 H z t o 2 0 kH z
Accuracy:
S a m e a s t i m e b a se ± 1 co u n t
R e so l u t i o n :
0.1 Hz/1 Hz
RECEIVE SINAD METER INPUT LEVEL
RANGE:
ANT Connector:
I n p u t L e ve l > - 6 0 d B m
T/R Connector:
I n p u t L e ve l > - 2 0 d B m
MODULATION LEVEL RANGE:
FM:
500 Hz to 40 kHz deviation
T e st F r e q u e n c y :
1000 Hz
Meter Range:
20 and 40 dB full scale
A ccu r a c y :
± 1 d B ± 1 L S D a t 1 kH z r a t e a n d 1 2 d B S I N A D
R e so l u t i o n :
0.1 dB
RECEIVE DISTORTION METER INPUT
LEVEL RANGE:
ANT Connector:
I n p u t L e ve l > - 6 0 d B m
T/R Connector:
I n p u t L e ve l > - 2 0 d B m
MODULATION LEVEL RANGE:
FM:
500 Hz to 100 kHz deviation
T e st F r e q u e n c y :
1000 Hz
Meter Range:
5%, 10%, 20%, 50%, 100% full scale ranges
Accuracy:
± 1 . 5 % ± 1 L S D a t 1 kH z r a t e a t 5 % d i st o r t i o n
R e so l u t i o n :
0.1%
DIGITAL DEMODULATION METERS (C4FM
FSK ERROR) INPUT LEVEL RANGE:
ANT Connector:
I n p u t L e ve l > - 6 0 d B m
T/R Connector:
I n p u t L e ve l > - 2 0 d B m
FSK Error:
< 2 % f r o m i d e a l , 3 % t o 1 0 % r e a d i n g , 4 0 0 sym b o l s
D-4
D-5
AUDIO FREQUENCY GENERATOR
WAVE SHAPE FORMATS:
W a ve S h a p e s :
Sine, Square, Triangle, Ramp
Amplitude Level:
( T h e co m b i n a t i o n o f F G E N 1 a n d F G E N 2 ca n n o t
e x c e e d t h e f o l l o w i n g c o n n e c t o r l i m i t a t i o n s. )
Unbalanced:
0 to 20 Vpp into 10 kΩ (Audio Out 1 [FGEN] and
Audio Out 2 [DEMOD])
Balanced - High Range:
0 t o 6 V r m s i n t o 1 0 k Ω ( A u d i o O u t 1 [ F G E N ] o n l y)
Balanced - Low Range:
0 to 600 mVrms into 10 kΩ (Audio Out 1 [FGEN]
only)
RESOLUTION:
High Range:
1 mV (Audio Out 1 [FGEN] and Audio Out 2
[DEMOD])
Low Range:
0.1 mV (Audio Out 1 [FGEN] only)
ACCURACY (SINE WAVE):
Unbalanced:
3 % ( 2 0 H z t h r o u g h 3 k H z ) ( A u d i o 1 o r 2 , l e ve l
>0.5 Vpp)
Balanced:
High Range:
10% (frequency at 1 kHz, level >0.5 Vpp)
Low Range:
10% (frequency at 1 kHz, level >0.05 Vpp)
Distortion (THD, sine wave):
< 0 . 5 % ( 1 kH z, 3 V p p )
<2% (20 Hz to 20 kHz, 1 through 15 Vpp)
Distortion (THD):
< 0 . 5 % ( 1 kH z, 3 V p p )
<2% (20 Hz to 20 kHz, 1 through 15 Vpp)
FREQUENCY RANGE:
D-6
Unbalanced:
DC to 20 kHz (Audio Out 1 [FGEN] and Audio
Out 2 [DEMOD])
Balanced:
5 0 H z t o 2 0 k H z ( A u d i o O u t 1 [ F G E N [ o n l y)
R e so l u t i o n :
0.1 Hz
Accuracy:
±0.1 Hz
BASE-BAND AUDIO FUNCTIONS
Input Level Range:
100 mVpp to 20 Vpp
Frequency Range:
Audio IN (SINAD) input:
5 0 H z t o 2 0 kH z ( u n b a l a n ce d )
Audio IN (SINAD) input:
50 Hz to 20 kHz (balanced)
Mic (MIC) input:
5 0 H z t o 2 0 kH z ( u n b a l a n ce d )
Input Impedance:
A u d i o I n ( S I N A D ) L o w i m p e d a n ce i n p u t : 6 0 0 Ω
(balanced)
High Impedance Input:
10 kΩ (unbalanced)
D-5
MIC IN (MIC) HIGH IMPEDANCE ONLY:
Phantom Power
+5 V through 5 kΩ
AUDIO FREQUENCY COUNTER INPUT
LEVEL RANGE (DEMOD SELECTED):
ANT Connector:
I n p u t L e ve l > - 6 0 d B m
T/R Connector:
I n p u t L e ve l > - 2 0 d B m
Input Sources:
Demodulated Audio, MIC Input, Audio (SINAD)
Input
Ranges:
200, 500, 1 k, 2 k, 5 k, 10 k, 20 k
Accuracy:
± 1 co u n t
R e so l u t i o n :
0.1 Hz
MICROPHONE AUDIO INPUT:
Modes:
D-7
E l e ct r e t - + 5 V t h r o u g h 5 k Ω
Dynamic
SPECTRUM ANALYZER FUNCTIONS
SWEEP (HORIZONTAL) ACCURACY:
Frequency Range:
1 MHz to 2.7 GHz
Frequency Resolution:
1 Hz
FREQUENCY SPAN WIDTH RANGE:
Analyzer Screen:
Z e r o S p a n , 1 kH z t o 2 G H z i n a 1 / 2 / 5 se q u e n ce ,
plus Full Span
Generate and Receive Screens:
Z e r o S p a n , 1 k H z t o 5 M H z i n a 1 / 2 / 5 s e q u e n ce
Span Accuracy:
±1% of (total) Span Width
Frequency Display:
S p a n a ccu r a cy + F r e q u e n cy S t a n d a r d a ccu r a cy +
50% of RBW
Sweep Rate Range:
1 0 m s t o 5 se c.
Sweep Rate Accuracy:
1%
1 dB Compression:
> - 1 0 d B m ( A N T C o n n e ct o r , N o i n p u t a t t e n u a t i o n )
Harmonic Spurious:
- 5 5 d B c a t - 4 0 d B m ( A N T C o n n e ct o r , N o i n p u t
attenuation)
Non-Harmonic Spurious:
-60 dBc (10 MHz to 2.7 GHz) (ANT Connector,
No input attenuation)
Residual Spurious:
≤ 8 5 d B m ( I n p u t t e r m i n a t e d , A N T C o n n e ct o r ,
No input attenuation)
AMPLITUDE (VERTICAL):
Level Accuracy:
± 1 . 5 d B a t - 2 0 d B m , A N T C o n n e ct o r , N o i n p u t
attenuation (typical)
Scales:
2 d B / d i v, 5 d B / d i v, 1 0 d B / d i v
LOG Linearity:
±2 dB
Reference Level Resolution:
1 dB
D-6
ATTENUATOR:
Range:
0 to 50 dB (Selectable manually or auto coupled
t o r e f e r e n ce l e ve l . )
A ccu r a c y :
± 0 . 5 d B / st e p , u p t o ± 1 d B m a x
DYNAMIC RANGE:
ANT Connector:
<-70 dBm
T/R Connector:
<-30 dBm
T y p i c a l N o i s e F l o o r P e r f o r m a n ce :
-110 dBm, 10 MHz to 2.7 GHz
(300 Hz Resolution Bandwidth selected)
Residual Phase Noise:
-92 dBc/Hz at 20 kHz offset
RESOLUTION BANDWIDTH:
Analyzer Screen:
3 0 0 H z, 3 kH z, 3 0 kH z, 6 0 kH z, 3 0 0 kH z, 3 M H z
Generate and Receive Screens:
300 Hz, 3 kHz, 60 kHz
Selectivity:
60 dB/3 dB ratio <15:1
Bandwidth Switching Error:
±1 dB
Video Bandwidths:
None, 10 Hz to 3 MHz in 1-3-10 steps
SPECIAL FUNCTIONS:
Display Modes:
Live, Coupled/Uncoupled (span/sweep time/RBW)
SPECTRUM ANALYZER VIDEO OUTPUT:
D-8
Reference Level:
= +5 V
Bottom-of-Screen:
= -5 V
OSCILLOSCOPE FUNCTIONS
Vertical Inputs:
2 i n p u t ch a n n e l s ( C H 1 a n d C H 2 ) , M I C I n p u t ,
Audio I/O Input, Internal Demodulation
I n p u t I m p e d a n ce :
1 MΩ
E xt e r n a l C o u p l i n g :
AC, DC, GND
Range:
20 mV to 20 V/div in a 1, 2, 5 sequence
Accuracy:
10% of full scale (DC to 50 kHz)
Bandwidth:
500 kHz usable
HORIZONTAL SWEEP:
Range:
1 0 µ s t o 1 se c p e r d i vi si o n
Accuracy:
1 % o f f u l l sca l e
Trigger Source:
C h a n n e l 1 , C h a n n e l 2 , I n t e r n a l o r E xt e r n a l T r i g g e r
E xt e r n a l T r i g g e r : e xp e ct s a T T L l e ve l ( 2 V - t r i g g e r
level)
S p e ci a l F u n c t i o n s :
Modes:
L i ve , T r i g g e r e d M o d e ( A u t o , N o r m a l , S i n g l e sh o t
trigger)
D-7
D-9
DVM FUNCTIONS
AC:
Input Impedance:
1 MΩ
600 Ω
150 Ω
Range:
400 mV to 100 V in a 1, 2, 4 sequence
R e so l u t i o n :
1 mV through 5 V scale, 10 mV on the 10 through
1 0 0 V sca l e s
Accuracy:
6% of full scale (50 Hz to 20 kHz) ±1 LSB
Range:
400 mV to 100 V in a 1, 2, 4 sequence
R e so l u t i o n :
0.1 m
0 . 4 V sca l e
10 MV
1 0 V , 2 0 V a n d 4 0 V sca l e s
1 mV
1 V , 2 V a n d 4 V sca l e s
100 mV
100V scale
Accuracy:
2 % o f f u l l sca l e ± 1 L S B
Input Impedance:
10 MΩ
DC:
D-10
TIME BASE
ACCURACY:
Output Frequency:
10 MHz
Time Base Stability:
±0.01 ppm
Time Base Aging:
± 0 . 1 p p m p e r ye a r
LEVEL:
D-11
Output Level:
1 to 5 Vpp into 10 kΩ
Warm-Up:
<5 min.
Time Base Capture:
1 t o 5 V p p i n p u t ( si n e o r sq u a r e w a ve )
DIGITAL I/O
Parallel Printer Connector
Serial Connector (RS-232)
Video Monitor Connector (VGA)
Mouse Connector (PS2 Compatible)
Keyboard Connector
Ethernet Connector (10T/100T)
Front Panel Test Connector
3.5 inch Floppy Drive
D-8
D-12
D-13
D-14
AC POWER
Input Range:
1 0 0 t o 1 2 0 V A C , 6 0 H z,
220 to 240 VAC, 50 Hz
Maximum Power Consumption:
220 W
Main Supply Fluctuations:
<10% of nominal voltage
Transient Over-Voltage Installation:
Category II
ENVIRONMENTAL/MECHANICAL
Weight:
33 lbs.
Volume:
7.75” (H) x 14” (W) x 19” (D)
Operating Temperature Range:
0° to 40°C
Storage Temperature Range:
-25° to 70°C
Pollution:
Pollution Degree 2
Altitude:
3000 meters
MISCELLANEOUS
Warranty
2 ye a r s
( E x t e n d e d W a r r a n t y a v a i l a b l e u p o n r e q u e st )
D-9
T H I S P A G E I N T E N T I ON A L L Y L E F T B L A N K .
D-10
APPENDIX E - TEST EQUIPMENT REQUIREMENTS
This Appendix contains a list of test equipment suitable for performing all testing procedures
co n t a i n e d i n t h i s m a n u a l . O t h e r e q u i p m e n t m e e t i n g s p e c i f i c a t i o n s l i s t e d i n t h i s A p p e n d i x m a y b e
su b st i t u t e d i n p l a c e o f r e c o m m e n d e d m o d e l s . E q u i p m e n t l i s t e d i n t h i s A p p e n d i x m a y e x c e e d m i n i m u m
r e q u i r e d sp e ci f i c a t i o n s f o r s o m e p r o c e d u r e s c o n t a i n e d i n t h i s m a n u a l .
TYPE
Digital Multimeter (DMM)
Universal Counter
MODEL
HP 34401A
HP 53131A w/ Option 030
Voltage Calibrator (AC/DC)
Fluke 5100B
Modulation Analyzer
HP 8901A
Audio Analyzer
HP 8903A
Power Meter
HP EPM-441A
Power Meter Sensor Head
HP 8482A
Power Meter Sensor Head
HP ECP-18A
Arbitrary Waveform Generator
HP 33120A
10 MHz Standard
RF Generator
Personal Computer
Attenuator
MIC/AUDIO Adapter
Power Splitter
RF Coaxial Cable
Frequency: 30 GHz
Resolution: 10 digits
HP E4418A
HP E4418B
HP E4412A
N/A
HP ESG-3000A
HP ESG-4000A
HP ESG-D3000A
HP ESG-D4000A
HP E4421B
HP E4422B
HP E4432B
HP E4433B
N/A
Pentium 166
64 MB RAM
Windows 95/98/NT
16-Bit Color
GPIB Interface Card
Ethernet Card
Network Adapter
Weinschel Model 1
10 dB
10 kΩ Load
50 Ω Load
EQUIVALENT / SPECS
Weinschel Model 1424-4
Aeroflex AC25007
HP 11667A
STORM A90-2000-001
GPIB Cables
Ethernet Crossover Cable
(See Appendix F)
Calibration Software CD-ROM
Aeroflex AC25031
E-1
T H I S P A G E I N T E N T I ON A L L Y L E F T B L A N K .
E-2
APPENDIX F - ETHERNET CROSSOVER CABLE
T h i s ca b l e ca n b e u s e d t o c a s c a d e h u b s o r f o r c o n n e c t i n g t w o E t h e r n e t s t a t i o n s b a c k - t o - b a c k w i t h o u t
a hub.
NOTE:
I t i s i m p o r t a n t t h a t e a c h p a i r i s ke p t a s a p a i r : T X + a n d T X - m u st b e i n a p a i r a n d R X + a n d
RX- must be together in another pair. (See following table)
NOTE:
The “+” side of each pair is called the "tip" and the “-“ side of each pair is called the "ring."
TO NETWORK INTERFACE CARD 1
TO NETWORK INTERFACE CARD 2
COMMON COLOR
SIGNAL NAME
PIN
PIN
SIGNAL NAME
COMMON COLOR
WHT/ORN
TX+
1
3
RX+
WHT/GRN
ORN
TX–
2
6
RX–
GRN
WHT/GRN
RX+
3
1
TX+
WHT/ORN
BLU
4
4
BLU
WHT/BLU
5
5
WHT/BLU
6
2
WHT/BRN
7
7
WHT/BRN
BRN
8
8
BRN
GRN
RX–
F-1
TX–
ORN
T H I S P A G E I N T E N T I ON A L L Y L E F T B L A N K .
F-2
INDEX
C
2975 Front Panel Connectors
2975 Rear Panel Connectors
2975 System Interconnect
C-3
C-5
5-3
A
Assemblies
Attenuator Assy
Backplane PCB Assy
CAI PCB Assy
Chassis Assy
CPU Adapter Assy
Disk I/O PCB Assy
Floppy Drive Assy
Front Panel Assy
Front Panel Audio PCB Assy
Generator Assy
Handle Assy
IF/Video PCB Assy
Multifunction I/O PCB Assy
Power Supply Assy
Power Termination Assy
Rear Panel Assy
Rear Panel PCB Assy
Receiver Assy
System Interconnect
Attenuator Assy
Assembly
Module Overview
Replacement Procedure
AUDIO I/O Connector, Pin-Out Table for
5-1
5-19
5-5
5-24
5-4
5-13
5-17
5-16
5-12
5-10
5-20
5-25
5-21
5-22
5-14
5-15
5-18
5-11
5-23
5-3
5-19
1-21
3-5
A-3
CAI PCB Assy
Assembly
Module Overview
Replacement Procedure
Calibration Data Sheet
Calibration Procedures
Generator / Analyzer / TCXO
Power Supply Voltages
Chassis Assy
Assembly
Parts List
Replacement Procedure
Composite Assy
Assembly
Parts List
Replacement Procedure
Connectors, 2975 Front Panel
Connectors, 2975 Rear Panel
Controls
CPU Adapter Assy
Assembly
Module Overview
Parts List
Replacement Procedure
4-11, 5-4
4-5
5-3
4-9
4-4
5-3
C-3
C-5
C-1
4-12, 5-13
1-15
4-7
3-11
D
Disk I/O PCB Assy
Assembly
Module Overview
Replacement Procedure
B
Backplane PCB Assy
Assembly
Module Overview
Replacement Procedure
5-24
1-26
3-10
2-46
2-41
2-44
2-41
5-17
1-20
3-19
E
5-5
1-13
3-27
ETHERNET Connector, Pin-Out Table for
ETHERNET Crossover Cable
A-12
F-1
F
Floppy Drive Assy
Assembly
Replacement Procedure
Front Panel Assy
Assembly
Replacement Procedure
Front Panel Audio PCB Assy
Assembly
Module Overview
Replacement Procedure
Front Panel Connectors, 2975
INDEX-1
5-16
3-26
5-12
3-20
5-10
1-14
3-23
C-3
G
General System Overview
Generator Assy
Assembly
Module Overview
Replacement Procedure
GPIB Connector, Pin-Out Table for
P
1-1
5-20
1-22
3-6
A-4
H
Handle Assy
Assembly
Replacement Procedure
5-26
3-4
I
IF/Video PCB Assy
Assembly
Module Overview
Replacement Procedure
5-21
1-23
3-8
K
KEYBOARD Connector, Pin-Out Table for
A-10
M
MIC Connector, Pin-Out Table for
Module Overview
Attenuator Assy (42A1A3)
Backplane PCB Assy (42A1A1A1)
CAI PCB Assy (42A1A8)
CPU Adapter Assy (42A1A1A5)
Disk I/O PCB Assy (42A1A1A9)
Front Panel Audio PCB Assy (42A1A1A2)
Generator Assy (42A1A4)
IF/Video PCB Assy (42A1A5)
Multifunction I/O PCB Assy (42A1A6)
Power Supply Assy (42A1A1A6)
Power Termination Assy (42A1A1A7)
Receiver Assy (42A1A7)
MOUSE Connector, Pin-Out Table for
Multifunction I/O PCB Assy
Assembly
Module Overview
Replacement Procedure
Parts Lists
Accessories
Chassis Assy
Composite Assy
CPU Adapter Assy
Pin-Out Table for
AUDIO I/O Connector
ETHERNET Connector
GPIB Connector
KEYBOARD Connector
MIC Connector
MOUSE Connector
PRINTER Connector
RS-232 Connector
TEST PORT Connector
USB Connector
VGA Connector
Power Supply Assy
Assembly
Module Overview
Replacement Procedure
Power Termination Assy
Assembly
Module Overview
Replacement Procedure
PRINTER Connector, Pin-Out Table for
A-2
1-5
1-21
1-13
1-26
1-15
1-20
1-14
1-22
1-23
1-24
1-16
1-17
1-25
A-9
5-22
1-24
3-9
INDEX-2
4-2
4-5, 4-11
4-4, 4-9
4-7, 4-12
A-3
A-12
A-4
A-10
A-2
A-9
A-6
A-5
A-7
A-11
A-8
5-14
1-16
3-16
5-15
1-17
3-24
A-6
R
Rear Panel Assy
Assembly
Replacement Procedure
Rear Panel Connectors, 2975
Rear Panel PCB Assy
Assembly
Replacement Procedure
Receiver Assy
Assembly
Module Overview
Replacement Procedure
Repacking for Shipping
Authorization
Freight Costs
Repacking Procedure
Shipping Containers
Tagging Test Sets
Replacement Procedures
Attenuator Assy
Backplane PCB Assy
CAI PCB Assy
Case Assy
CPU Adapter Assy
Disk I/O PCB Assy
Floppy Drive Assy
Front Panel Assy
Front Panel Audio PCB Assy
Generator Assy
Handle
IF/Video PCB Assy
Multifunction I/O PCB Assy
Power Supply Assy
Power Termination Assy
Rear Panel PCB Assy
Rear Panel Assy
Receiver Assy
RS-232 Connector, Pin-Out Table for
V
5-18
3-13
C-5
5-11
3-12
5-23
1-25
3-7
B-1
B-1
B-1
B-1
B-1
B-1
3-2
3-5
3-27
3-10
3-3
3-11
3-19
3-26
3-20
3-23
3-6
3-4
3-8
3-9
3-16
3-24
3-13
3-12
3-7
A-5
Verification Data Sheet
Verification Procedures
AF Counter Accuracy
AF Meter Accuracy
AM Modulation Meter Accuracy
Analyzer Bandwidth Switching Error
Analyzer Frequency and Span Accuracy
Analyzer Level Accuracy
Digital Voltmeter AC Accuracy
Digital Voltmeter DC Accuracy
FM Deviation Meter Accuracy
Function Generator Frequency Accuracy
Function Generator Level Accuracy
Function Generator Total Harmonic
Distortion
Generator AM Modulation Accuracy
Generator AM Residual
Generator FM Deviation Accuracy
Generator FM Modulation Distortion
Generator FM Modulation Rate
Generator FM Residual
Generator Level Flatness
Generator Output Frequency
Generator Output Power
Generator T/R Power Level Accuracy
Generator T/R Power Level Flatness
Initial Setup
Oscilloscope Amplitude Accuracy
RF Power Meter Accuracy
RF Error Meter Accuracy
RSSI Meter Accuracy
SINAD/Distortion Meter Accuracy
VGA Connector, Pin-Out Table for
S
Specifications
System Interconnect, 2975
System Overview
Generate System
Receive System
D-1
5-3
1-1
1-2
1-1
T
Table of I/O Connectors
Test Equipment Requirements
TEST PORT Connector, Pin-Out Table for
A-1
E-1
A-7
U
USB Connector, Pin-Out Table for
A-11
INDEX-3
2-34
2-3
2-32
2-20
2-22
2-24
2-23
2-11
2-28
2-27
2-21
2-30
2-29
2-31
2-18
2-14
2-15
2-17
2-16
2-13
2-6
2-4
2-5
2-7
2-8
2-3
2-25
2-9
2-19
2-10
2-33
A-8
T H I S P A G E I N T E N T I ON A L L Y L E F T B L A N K .
INDEX-4
As we are always seeking to improve our products, the information in
this document gives only a general indication of the product capacity,
performance and suitability, none of which shall form part of any
contract. We reserve the right to make design changes without notice.
CHINA
Tel: [+86] (10) 6467 2716
Fax: [+86] (10) 6467 2821
FRANCE
Tel: [+33] 1 60 79 96 00
Fax: [+33] 1 60 0177 69 22
HONG KONG
Tel: [+852] 2832 7988
Fax: [+852] 2834 5364
SCANDINAVIA
Tel: [+45] 9614 0045
Fax: [+45] 9614 0047
Tel: [+34] (91) 640 11 34
Fax: [+34] (91) 640 06 40
Tel: [+44] (0) 1438 742200
Fax: [+44] (0) 1438 7276
SPAIN
UNITED KINGDOM
Toll Free: 0800 282388 (UK only)
USA
Tel: [+1] (316) 522 4981
Fax: [+1] (316) 522 1360
Toll Free: 800 835 2352 (US only)
Our passion for performance is defined by three
attributes represented by these three icons:
solution-minded, performance-driven, customer-focused.