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Ramp Test Set
TCAS-201-2
Operation Manual
1002-8505-200
Issue-2
OPERATION MANUAL
RAMP TEST SET
TCAS-201-2
PUBLISHED BY
Aeroflex
COPYRIGHT  Aeroflex 2004
A l l r i g h t s r e s e r v e d . N o p a r t o f t h i s p u b l i c a t i o n m a y b e r e p r o d u c e d , s t o r e d i n a r e t r i e v a l syst e m , o r
t r a n sm i t t e d i n a n y f o r m o r b y a n y m e a n s , e l e c t r o n i c , m e c h a n i c a l , p h o t o c o p y i n g , r e co r d i n g o r
o t h e r w i s e w i t h o u t t h e p r i o r p e r m i s s i o n o f t h e p u b l i sh e r .
Original Printing
Jun 1997
Revision 1
Dec 1998
R e vi si o n 2
Mar 1999
Revision 3
Ju l 2 0 0 0
I ssu e - 2
Jan 2004
1 0 2 0 0 W e s t Y o r k / W i c h i t a , K a n sa s 6 7 2 1 5 U . S . A . / ( 3 1 6 ) 5 2 2 - 4 9 8 1 / F A X ( 3 1 6 ) 5 2 4 - 2 6 2 3
O PERATIO N MANUAL
TCAS- 201
Cable Statement:
A double shielded and properly terminated external interface cable must be used with this
equipment when interfacing with the COMM Connector.
For continued EMC compliance, all external cables must be 3 meters or less in length.
Nomenclature Statement:
I n t h i s m a n u a l t h e I n t h i s m a n u a l t h e T C A S - 2 0 1 , T C A S - 2 0 1 T e st S e t , U n i t , T e st S e t o r T C A S - 2 0 1
R a m p T e s t S e t r e f e r s t o t h e T C A S - 2 0 1 - 2 R a m p T e st S e t .
O PERATIO N MANUAL
TCAS- 201
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 .
O PERATIO N MANUAL
TCAS- 201
SAFETY FIRST: TO ALL OPERATIONS PERSO NNEL
REFER ALL SERVICING OF UNIT TO QUALIFIED TECHNICAL PERSONNEL. THIS UNIT CONTAINS NO
OPERATOR SERVICEABLE PARTS.
WARNING: USING THIS EQUIPMENT IN A MANNER NOT SPECIFIED BY THE ACCOMPANYING
DOCUMENTATION MAY IMPAIR THE SAFETY PROTECTION PROVIDED BY THE EQUIPMENT.
CASE, COVER OR PANEL REMOVAL
Removing the Chassis Assembly from the Case Assembly exposes the operator to electrical hazards that
can result in electrical shock or equipment damage. Do not operate this Test Set with the Chassis Assembly
removed from the Case Assembly.
SAFETY IDENTIFICATION IN TECHNICAL MANUAL
This manual uses the following terms to draw attention to possible safety hazards, that may exist when
operating 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 OR DC TERMINAL: Terminal that may supply or be supplied with ac or dc voltage.
DC TERMINAL: Terminal that may supply or be supplied with dc voltage.
AC TERMINAL: Terminal that may supply or be supplied with ac or alternating voltage.
SWITCH ON/OFF (Push-Push): AC line power to the device is connected ON or disconnected OFF.
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 Test
Set 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, 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.
INTERNAL BATTERY
This unit contains a Sealed-Lead Battery, serviceable only by a qualified technician.
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.
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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 .
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RECORD OF REVISIONS
REV
NO.
ISSUE
DATE
DATE
INSERTED
BY
REV
NO.
ISSUE
DATE
DATE
INSERTED
BY
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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 .
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LIST O F EFFECTIVE PAG ES
CHAPTER/SECTION/SUBJECT
Title/Copyright Page
Statements
Safety Page
R e co r d o f R e v i s i o n s
L i st o f E f f e c t i v e P a g e s
Table of Contents
I n t r o d u ct i o n
1-Table of Contents
1 - L i st o f I l l u s t r a t i o n s
1 - L i st o f T a b l e s
1-1-1
1-2-1
1-2-2
1-2-3
1-2-4
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1-4-1
1-5-1
Appendix A
Appendix B
Appendix C
Appendix D
Appendix E
Appendix F
Index
Battery/Voltage Instructions Title Page
Battery/Voltage Instructions Warning Page
Battery/Voltage Instructions Caution Page
Battery/Voltage Instructions
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TABLE OF CONTENTS
Title
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Title Page
Copyright Page
Statements
Safety Page
Record of Revisions
List of Effective Pages
Table of Contents
I n t r o d u ct i o n
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Section
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Appendix
Appendix
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Description
Operation
Specifications
Shipping
Storage
1-1
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1-3
1-4
1-5
Connector Pin-Out Tables
Signal Formats
Auxiliary Equipment
M e t r i c / B r i t i s h I m p e r i a l C o n ve r si o n T a b l e w i t h N a u t i c a l D i s t a n c e C o n v e r s i o n s
Target Acquisition Time Probability Table
Abbreviations
Index
Battery/Voltage Instructions
TABLE OF CONTENTS
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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 .
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INTRO DUCTIO N - TCAS-201 RAMP TEST SET
T h i s m a n u a l c o n t a i n s T C A S - 2 0 1 o p e r a t i n g i n st r u ct i o n s f o r r a m p t e st i n g A T C R B S a n d M o d e S
T r a n s p o n d e r s a n d T C A S e q u i p p e d I n t e r r o g a t o r s. I t i s st r o n g l y r e co m m e n d e d t h a t p e r so n n e l b e
thoroughly familiar with the contents of this manual before attempting to operate this equipment.
Refer all servicing of the TCAS-201 Test Set to qualified technical personnel.
ORGANIZATION
This manual is divided into five sections as follows:
CHAPTER 1
- OPERATION
Section 1
- D E S C R I P T I O N ( p h ysi ca l d e scr i p t i o n o f t h e T C A S - 2 0 1 )
Section 2
- O P E R A T I O N ( i n s t a l l a t i o n ; d e scr i p t i o n o f co n t r o l s, co n n e ct o r s a n d i n d i ca t o r s;
performance evaluation and general operating procedures)
Section 3
- SPECIFICATIONS
Section 4
- SHIPPING
Section 5
- STORAGE
INTRODUCTION
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CHAPTER ONE
TCAS- 201 TEST SYSTEM
OPERATION MANUAL
TABLE OF CONTENTS
Title
C h a p t e r / S e ct i o n / S u b j e ct
SECTION 1 - DESCRIPTION
1. General Description and Capabilities
1.1
Description
1.2
Functional Capabilities
SECTION 2 - OPERATION
1 . I n st a l l a t i o n
1.1
General
1.2
Battery Operation
1.3
Battery Charging
1.4
Safety Precautions
1.4.1 Complying with Instructions
1.4.2 Grounding Power Cord
1.4.3 Operating Safety
1.4.4 CAUTION and WARNING Labels
1.5
AC Power Requirements
1.6
FAA Requirements
1.7
Battery Recharging
1.8
External Cleaning
2. Controls, Connectors And Indicators
2.1
Front Panel
2.2
Flat Antenna
3. Performance Evaluation
3.1
General
3.2
Self Test
3.3
Diagnostics
4. General Operating Procedures
4.1
General
4.2
Start-Up
4.2.1 General
4 . 2 . 2 S c e n a r i o T e s t O p e r a t i o n F r o m S t a r t - U p S cr e e n
4.3
Setup
4.3.1 Setup #1 Menu
4.3.2 Setup #2 Menu
4.3.3 Data Storage
4.3.4 RAM Reset
4.4
Scenario Test
4.5
Reply Test
4.5.1 ATCRBS Operation
4.5.2 Mode S Operation
4.6
Monitor
4.6.1 ATCRBS Operation
4.6.2 Mode S Operation
4.7
Power & Frequency
4.8
Recommended Test Operation
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Title
SECTION 3 - SPECIFICATIONS
Signal Generator (Reply Characteristics)
UUT Measurements (Interrogations)
Test Antenna
Battery Operation
Power Requirements
Fuse Requirements
Safety
Operational Environmental Considerations
SECTION 4 - SHIPPING
1. Shipping Test Sets
1.1
Information
1.2
R e p a c ki n g P r o c e d u r e
SECTION 5 - STORAGE
1. Storing Test Sets
C h a p t e r / S e ct i o n / S u b j e ct
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LIST OF ILLUSTRATIONS
Title
Battery Recharging
TCAS-201 Front Panel
Flat Antenna
Sample Self Test Screens
Sample Diagnostics Screen
Start-Up Screen
Sample Setup #1 Menu Screens
TCAS-201 Effective Test Coverage
Mode S Coverage Within 12 nmi Simulated Range
Sample Setup #2 Menu Screen
Sample Scenario Test Screens
S a m p l e I n t r u d e r F l i g h t P a t t e r n ( R a n g e F a ct o r )
S a m p l e I n t r u d e r F l i g h t P a t t e r n ( A l t i t u d e F a ct o r )
Sample ATCRBS Reply Test Screens
Sample Mode S Reply Test Screens
Sample ATCRBS Monitor Screens
Sample Mode S Monitor Screens
Sample Power & Frequency Screens
Suggested Layout to Reduce Multipath Errors
R e co m m e n d e d T e s t L o c a t i o n s
Default Scenario Test Screen
Repacking Procedure
C h a p t e r / S e ct i o n / S u b j e ct
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1-LIST OF ILLUSTRATIONS
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LIST O F TABLES
Title
S p e ci f i e d F u s e R a t i n g s
Self Test Error Code Definitions
D i a g n o st i c s S i g n a l D e f i n i t i o n s
SL: Field Valid Data
RI: Field (Acquisition) Valid Data
RI: Field (Tracking) Valid Data
CA: Field Valid Data
ARA: Field Valid Data
RAC: Field Valid Data
CVC: Field Display Data
VRC: Field Display Data
CHC: Field Display Data
HRC: Field Display Data
ESB: Field Display Data
C h a p t e r / S e ct i o n / S u b j e ct
1-2-1
1-2-3
1-2-3
1-2-4
1-2-4
1-2-4
1-2-4
1-2-4
1-2-4
1-2-4
1-2-4
1-2-4
1-2-4
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1-LIST OF TABLES
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SECTION 1 - DESCRIPTION
1. GENERAL DESCRIPTION AND CAPABILITIES
1.1 DESCRIPTION
T h e T C A S - 2 0 1 R a m p T e s t S e t i s a r u g g e d i ze d
simulator designed for ease of use, portability,
r e l i a b i l i t y a n d l o n g se r vi ce l i f e . P o w e r i s
derived from an internal battery. An ac input
connection is provided for battery charging,
b e n ch o p e r a t i o n o r se r vi ci n g u se . M o st
accessories (Flat Antenna, Antenna Cable,
O p e r a t o r ’s G u i d e , a c P o w e r C a b l e , F l e xi b l e
A n t e n n a , A n t e n n a S h i e l d a n d F u s e ) a r e ke p t i n
t h e S t o r a g e C o m p a r t m e n t ( C a s e A s se m b l y
L i d ) . T h e T r i p o d i s s t o r e d s e p a r a t e l y. R e f e r t o
A p p e n d i x C f o r d e s c r i p t i o n o f a c c e s so r i e s .
The TCAS-201 Ramp Test Set, simulating a
transponder with Mode C and Mode S
capabilities, allows the user to perform the
required ground tests for Follow-On
C e r t i f i c a t i o n s a s d e f i n e d i n t h e F A A A d vi so r y
Circular #20-131, Airworthiness and
Operational Approval of Traffic Alert and
Collision Avoidance Systems (TCAS II) and
M o d e S T r a n s p o n d e r s . T h e T C A S - 2 0 1 a l so
si m u l a t e s m a n y i n - f l i g h t c o n d i t i o n s r e q u i r e d f o r
F o l l o w - O n C e r t i f i c a t i o n s . T h e T C A S - 2 0 1 T e st
S e t ca n b e u s e d t o e l i m i n a t e m a n y c o s t l y h o u r s
of flying time.
1.2 FUNCTIONAL CAPABILITIES
The TCAS-201 has the following features and
c a p a b i l i t i e s:
N o n - vo l a t i l e m e m o r y f o r st o r i n g u p t o t e n
u se r - p r o g r a m m e d sce n a r i o s.
Selectable altitude levels to test inhibit
cl i m b R A s a n d l o w a l t i t u d e o p e r a t i o n .
B r o a d ca st I n t e r r o g a t i o n M o n i t o r w i t h
d i sp l a y o f I n t e r r o g a t i n g A i r cr a f t A d d r e ss.
S q u i t t e r g e n e r a t i o n w i t h se l e ct a b l e sq u i t t e r
address.
S e l e ct a b l e p e r ce n t r e p l y ( A T C R B S ) i n 1 0 %
steps.
L C D D i s p l a y w i t h a u t o m a t i c l i g h t se n si n g
illumination control.
R F , M o n i t o r , I n t e r r o g a t i o n V i d e o a n d S yn c
P u l s e o u t p u t s f o r u s e i n b e n c h t e st i n g .
Internal Battery allowing up to 1.5 hours of
operation before recharge.
A u t o m a t i c p o w e r sh u t d o w n a f t e r
a p p r o x i m a t e l y 1 5 m i n u t e s o f n o n - u se w h e n
ac power is not connected.
S i z e a n d u s a b i l i t y t o a l l o w o n e p e r so n
operation on the ramp.
S w i t ch a b l e T C A S I ( n o P 4 w i d t h d e t e ct i o n )
o r T C A S I I ( n o r m a l P 4 w i d t h d e t e ct i o n )
operation.
Accurate measurements of interrogator
transmitting frequency, output power and
Whisper-Shout accuracy (using Attenuation
co n t r o l ) .
S ce n a r i o t e s t i n g , s i m u l a t i n g p l a n n e d
encounters with Mode C or Mode S
intruders in order to activate aural and
vi su a l T r a f f i c A d v i s o r i e s ( T A s ) a n d
Resolution Advisories (RAs).
Ruggedized construction designed for the
co n d i t i o n s e n c o u n t e r e d i n t h e r a m p
e n vi r o n m e n t .
Soft-press key controls for easy operation.
B u i l t - I n - T e s t ( B I T ) f o r c o n f i d e n c e t e st i n g
and fault isolation.
1-1-1
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SECTION 2 - OPERATION
1. INSTALLATION
1.1
GENERAL
The TCAS-201 is powered by an internal
battery. The Test Set contains a battery
ch a r g i n g c i r c u i t w h i c h e n a b l e s t h e o p e r a t o r t o
recharge the battery when connected to ac
power.
NOTE:
The TCAS-201 can operate
co n t i n u o u s l y o n a c p o w e r f o r s e r v i c i n g
and/or bench tests.
Refer to 1-2-2, Figure 2 for location of
controls, connectors or indicators.
1.2
BATTERY OPERATION
The internal battery is equipped to power the
T C A S - 2 0 1 f o r 1 . 5 h o u r s o f c o n t i n u o u s u se
before needing recharging. When executing
t h e S e l f T e s t f u n c t i o n , t h e D I S P L A Y i n d i ca t e s
whether the battery is usable or in need of
recharging.
NOTE:
When battery is low during operation,
**LOW BATTERY** appears in the
right half of the fifth line on the
DISPLAY. An example is shown in 12-4, Figure 17. Continued operation
with a low battery results in an
automatic power shut down (based on
v o l t a g e d r o p ) a f t e r a f e w m i n u t e s.
The TCAS-201 contains an automatic time-out
t o c o n s e r ve p o w e r . I f a k e y i s n o t p r e sse d
w i t h i n a 1 5 - m i n u t e t i m e p e r i o d , t h e T e st S e t
shuts Off (only when using battery power).
1.3
BATTERY CHARGING
T h e b a t t e r y c h a r g e r o p e r a t e s w h e n e ve r a c
power is applied to the Test Set and the
P O W E R K e y i s p r e s s e d O f f . W h e n ch a r g i n g ,
the battery reaches an 80% charge in
approximately two hours. The battery should
be charged every three months (minimum) or
d i s c o n n e ct e d f o r l o n g t e r m i n a c t i v e s t o r a g e
periods of more than six months.
1.4
SAFETY PRECAUTIONS
T h e f o l l o w i n g s a f e t y p r e c a u t i o n s m u st b e
observed during installation and operation.
Aeroflex assumes no liability for failure to
comply with any safety precaution outlined in
this manual.
1.4.1
Complying with Instructions
Installation/operating personnel should not
a t t e m p t t o i n st a l l o r o p e r a t e t h e T C A S - 2 0 1
w i t h o u t r e a d i n g a n d c o m p l y i n g w i t h i n st r u ct i o n s
contained in this manual. All procedures
contained in this manual must be performed in
exact sequence and manner described.
1.4.2
Grounding Power Cord
WARNING:
USING A THREE-PRONG TO
TWO-PRONG ADAPTER PLUG
CREATES A SHOCK HAZARD
BETWEEN THE CHASSIS AND
ELECTRICAL GROUND.
F o r a c o p e r a t i o n , t h e p o w e r co r d , e q u i p p e d
w i t h s t a n d a r d t h r e e - p r o n g p l u g , m u st b e
co n n e ct e d t o a p r o p e r l y g r o u n d e d t h r e e - p r o n g
r e ce p t a cl e . I t i s t h e cu st o m e r ’s r e sp o n si b i l i t y
to:
H a v e a q u a l i f i e d e l e c t r i c i a n c h e ck
r e ce p t a cl e ( s) f o r p r o p e r g r o u n d i n g .
Replace any standard two-prong
r e ce p t a cl e ( s) w i t h p r o p e r l y g r o u n d e d t h r e e p r o n g r e ce p t a cl e ( s) .
1.4.3
Operating Safety
D u e t o p o t e n t i a l f o r e l e c t r i c a l s h o c k w i t h i n t e st
e q u i p m e n t , t h e C h a s s i s A s s e m b l y m u st n o t b e
r e m o ve d f r o m t h e C a se A sse m b l y. B a t t e r y/
V o l t a g e I n s t r u c t i o n s , c o m p o n e n t r e p l a ce m e n t
and internal adjustments must only be
p e r f o r m e d b y q u a l i f i e d s e r v i c e t e c h n i ci a n s.
1.4.4
CAUTION and WARNING Labels
E xe r ci se e xt r e m e ca r e w h e n p e r f o r m i n g
operations preceded by a CAUTION or
WARNING label. CAUTION labels appear
where possibility of damage to equipment
exists. WARNING labels denote conditions
w h e r e b o d i l y i n j u r y o r d e a t h m a y r e su l t .
1-2-1
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O PERATIO N MANUAL
TCAS- 201
1.5
AC POWER REQUIREMENTS
The TCAS-201 operates over a voltage range
of 100 to 120 VAC at 60 Hz or 220 to 240 VAC
a t 5 0 H z a cco r d i n g t o t h e i n t e r n a l L i n e S u p p l y
S w i t ch se t t i n g ( o n l y s e r v i c e a b l e b y a q u a l i f i e d
t e ch n i ci a n ) . R e f e r t o B a t t e r y / V o l t a g e
I n st r u c t i o n s .
T h e sp e ci f i e d f u se r a t i n g s a r e l i s t e d i n 1 - 2 - 1 ,
Table 1.
CAUTION:
FOR CONTINUOUS
PROTECTION AGAINST FIRE,
REPLACE ONLY WITH FUSES
OF THE SPECIFIED VOLTAGE
AND CURRENT RATINGS.
INPUT VOLTAGE
F1 AND F2 FUSES
100 to 120 VAC
1.0 A, 250 V
Fast Blo (Type F)
(Aeroflex 5106-4501-000)
(Bussman AGC1)
220 to 240 VAC
0.5 A, 250 V
Fast Blo (Type F)
(Aeroflex 5106-0000-016)
(Bussman AGC1/2)
1.6
FAA REQUIREMENTS
T h e F e d e r a l A vi a t i o n A d m i n i st r a t i o n ( F A A )
requires procedures for eliminating the
potential for interfering with TCAS-equipped
a i r cr a f t d u r i n g t r a n sp o n d e r t e st i n g . P r o b l e m s
arise when the transponder is operating with
the aircraft on the ground and the automatic
a l t i t u d e r e p o r t i n g syst e m " p u m p e d u p . " T h r e e
m e t h o d s o f F A A co m p l i a n ce a r e : sh i e l d i n g
transponder antenna(s), connecting the
T C A S - 2 0 1 d i r e ct l y t o t h e t r a n sp o n d e r u n d e r
test and testing in an anechoic enclosure. The
Antenna Shield provides a practical way of
co m p l yi n g w i t h t h e F A A r e q u i r e m e n t w h e n a
direct connection or anechoic enclosure is not
a va i l a b l e . R e f e r t o A p p e n d i x C f o r A n t e n n a
S h i e l d i n st a l l a t i o n . R e f e r t o p a r a 1 - 2 - 4 . 4 ,
1 - 2 - 4 . 5 a n d 1 - 2 - 4 . 6 f o r t e st i n g p r o ce d u r e s
when using the Antenna Shield.
Specified Fuse Ratings
Table 1
1-2-1
Page 2
Jan 1/04
O PERATIO N MANUAL
TCAS- 201
DO NOT TRANSMIT
INTO ANTENNA
TERMINAL
INTERR
REPLY
RED
(CHARGING)
CHARGE
1/2 WATT
MAX
TCAS-201
ANTENNA
RF I/O
MONITOR
SYNC
INTERR
VIDEO
COMM
AC PWR CONNECTOR
PWR
TEST
RUN
STOP
SET
CONT
E
SELF
TEST
SCEN
FUS
RPLY
TEST
SE F
USE
MON
E
SE F
FUS
SLEW
POWER
100-120VAC
220-240VAC
F2
1.0A @ 120 VAC
0.5A @ 220 VAC
TYPE F
USE
SELECT
GREEN
(CHARGED)
F1
60Hz
50Hz
8507041
B a t t e r y R e ch a r g i n g
Figure 1
1.7
BATTERY RECHARGING
Refer to 1-2-1, Figure 1.
STEP
PROCEDURE
1.
V e r i f y F U S E S a r e co r r e ct f o r n o r m a l
operating voltage. Refer to para 1-2-1.5.
2.
Connect ac power cable between AC
PWR Connector and normal operating
voltage power source according to Test
Set configuration. Refer to para 1-2-1.5.
3.
Verify DISPLAY is Off. If DISPLAY is
On, press POWER Key.
4.
Verify CHARGE Indicator illuminates red.
5.
Allow two hours for battery charge or
until CHARGE Indicator illuminates
green.
NOTE:
I f t h e b a t t e r y f a i l s t o a cce p t a
c h a r g e a n d t h e T C A S - 2 0 1 T e st
Set does not operate on battery
p o w e r , t h e b a t t e r y , s e r vi ce a b l e
only by a qualified technician,
requires replacement. Refer to
B a t t e r y / V o l t a g e I n s t r u ct i o n s.
1.8
EXTERNAL CLEANING
The following procedure contains routine
i n s t r u c t i o n s f o r c l e a n i n g t h e o u t s i d e o f t h e T e st
Set.
CAUTION:
STEP
DISCONNECT POWER FROM
TEST SET TO AVOID POSSIBLE
DAMAGE TO ELECTRONIC
CIRCUITS.
PROCEDURE
1.
C l e a n f r o n t p a n e l b u t t o n s a n d d i sp l a y
f a ce w i t h so f t l i n t - f r e e cl o t h . I f d i r t i s
difficult to remove, dampen cloth with
water and a mild liquid detergent.
2.
Remove grease, fungus and ground-in
d i r t f r o m su r f a ce s w i t h so f t l i n t - f r e e cl o t h
d a m p e n e d ( n o t s o a k e d ) w i t h i so p r o p yl
alcohol.
3.
R e m o ve d u st a n d d i r t f r o m co n n e ct o r s
w i t h so f t - b r i st l e d b r u sh .
4.
C o ve r co n n e ct o r s, n o t i n u se , w i t h
s u i t a b l e d u s t c o v e r t o p r e v e n t t a r n i sh i n g
o f co n n e ct o r co n t a ct s.
5.
C l e a n c a b l e s w i t h s o f t l i n t - f r e e cl o t h .
6.
P a i n t e x p o s e d m e t a l s u r f a c e t o a vo i d
co r r o si o n .
1-2-1
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TCAS- 201
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 .
1-2-1
Page 4
Jan 1/04
O PERATIO N MANUAL
TCAS- 201
2. CONTROLS, CONNECT ORS AND INDICATORS
18
19
21
20
1
22
2
DO NOT TRANSMIT
INTO ANTENNA
TERMINAL
17
INTERR
REPLY
3
1/2 WATT
MAX
TCAS-201
ANTENNA
MONITOR
16
CHARGE
SYNC
4
RF I/O
INTERR
VIDEO
COMM
5
15
14
PWR
TEST
RUN
STOP
E
SELF
TEST
SCEN
FUS
13
RPLY
TEST
SE F
USE
MON
6
SET
CONT
1.0A @ 120 VAC
0.5A @ 220 VAC
TYPE F
100-120VAC
220-240VAC
E
POWER
FUS
12
SLEW
SE F
USE
SELECT
F2
F1
60Hz
50Hz
7
11
10
9
8
8507040
TCAS-201 Front Panel
Figure 2
1-2-2
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O PERATIO N MANUAL
TCAS- 201
CONTROLS, CONNECTORS AND
INDICATORS IN NUMERIC ORDER
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
15.
16.
17.
18.
19.
20.
21.
22.
CHARGE Indicator
SYNC Connector (J10055)
COMM Connector (J10053)
PWR TEST Key
RUN/STOP Key
FUSES
SET/CONT Key
AC PWR Connector (J10050)
S L E W K e ys
SCEN Key
SELECT Keys
POWER Key
SELF TEST Key
MON Key
RPLY TEST Key
DISPLAY
RF I/O Connector (J10058)
ANTENNA Connector (J10057)
INTERR VIDEO Connector (J10054)
MONITOR Connector (J10056)
INTERR Indicator
R E P L Y I n d i ca t o r
CONTROLS, CONNECTORS AND
INDICATORS IN ALPHABETICAL ORDER
A C P W R C o n n e ct o r ( J1 0 0 5 0 )
A N T E N N A C o n n e ct o r ( J1 0 0 5 7 )
CHARGE Indicator
C O M M C o n n e ct o r ( J1 0 0 5 3 )
DISPLAY
FUSES
I N T E R R I n d i ca t o r
M O N I T O R C o n n e ct o r ( J1 0 0 5 6 )
MON Key
POWER Key
PWR TEST Key
R E P L Y I n d i ca t o r
I N T E R R V I D E O C o n n e ct o r ( J1 0 0 5 4 )
R F I / O C o n n e ct o r ( J1 0 0 5 8 )
RPLY TEST Key
RUN/STOP Key
SCEN Key
S E L E C T K e ys
SELF TEST Key
SET/CONT Key
S L E W K e ys
S Y N C C o n n e ct o r ( J1 0 0 5 5 )
8
18
1
3
16
6
21
20
14
12
4
22
19
17
15
5
10
11
13
7
9
2
1-2-2
Page 2
Jan 1/04
O PERATIO N MANUAL
TCAS- 201
2.1 FRONT PANEL
Refer to 1-2-2, Figure 2.
ITEM
1.
DESCRIPTION
CHARGE Indicator
ITEM
8.
LED indicates the charger is active (ac
a p p l i e d w i t h T e s t S e t O f f ) . R e d i n d i ca t e s
when battery is charging and green
indicates battery is more than 80%
charged.
2.
3.
9.
5.
zA d j u st va l u e s i n S ce n a r i o T e st , R e p l y
zS e l e c t S i g n a l T y p e a n d a d j u st
Enters Power & Frequency screen onto
the DISPLAY.
zS e t p a r a m e t e r s a n d se l e ct m e m o r y
A t t e n u a t i o n i n D i a g n o s t i c s scr e e n .
storage in Setup Menus.
RUN/STOP Key
Variable slew rates are available,
depending on item being edited.
K e e p i n g S L E W K e y p r e sse d p r o vi d e s
g r e a t e r r a t e o f ch a n g e , i n m o st
i n s t a n c e s , t h a n p r e s s i n g a n d r e l e a si n g .
10.
FUSES
Provide safe operation with ac input
power applied to the TCAS-201. Refer to
p a r a 1 - 2 - 1 . 5 f o r c o r r e c t f u s e s i ze a n d
type.
7.
Test and Monitor screens.
PWR TEST Key
I n i t i a t e s o r t e r m i n a t e s S c e n a r i o T e st ,
Reply Test or Monitor actions. The
R U N / S T O P K e y a l s o a ct i v a t e s t h e s t o r e
or recall operation in the Setup #1 Menu
scr e e n .
6.
S L E W K e ys
U se d t o :
COMM Connector (J10053)
LEMO type connector not used at this
time.
4.
A C P W R C o n n e ct o r ( J1 0 0 5 0 )
P r o vi d e s t h e i n p u t f o r a n e xt e r n a l a c
p o w e r so u r ce ( 1 0 0 t o 1 2 0 V A C a t 6 0 H z
o r 2 2 0 t o 2 4 0 V A C a t 5 0 H z) f o r
r e ch a r g i n g t h e b a t t e r y o r o p e r a t i n g t h e
Test Set. The operating voltage range
d e p e n d s o n t h e L i n e S u p p l y S w i t ch
Setting, only serviceable by a qualified
t e ch n i ci a n . R e f e r t o B a t t e r y/ V o l t a g e
I n st r u ct i o n s.
SYNC Connector (J10055)
BNC type connector provides
O sci l l o s c o p e S y n c . L o n g p u l s e g o e s
from low to high before a reply and from
high to low before an interrogation.
DESCRIPTION
E n t e r s S ce n a r i o T e st scr e e n ( f o r
p r o g r a m m i n g i n t r u d e r s c e n a r i o s) o n t o t h e
DISPLAY.
11.
S E L E C T K e ys
U se d t o se l e ct :
SET/CONT Key
Enters Setup Menus onto the DISPLAY.
P r e s s i n g o n c e f r o m a n y o t h e r scr e e n
enters the Setup #1 Menu onto the
DISPLAY. Setup #1 Menu allows the
user to set initial or default test
parameters and control data storage.
Pressing once from the Setup #1 Menu
enters the Setup #2 Menu onto the
DISPLAY. Setup #2 Menu allows the
u se r t o s e t D I S P L A Y c h a r a c t e r i st i cs a n d
Scenario Test Range and Altitude
limitations.
SCEN Key
zI t e m s t o e d i t i n S e t u p M e n u s,
Scenario Test screens and Reply
Test screens.
zD i a g n o s t i c s s c r e e n f r o m S e l f T e st
screen.
12.
POWER Key
A p p l i e s p o w e r t o t h e T e st S e t ; p u sh O n
( I ) o r p u sh O f f ( O ) .
NOTE:
When operating on battery
power, an internal automatic
t i m e - o u t r e m o ve s p o w e r f r o m
t h e T e st S e t f o l l o w i n g
1 5 m i n u t e s o f n o k e y a ct i vi t y.
1-2-2
Page 3
Ja n 1 / 0 4
O PERATIO N MANUAL
TCAS- 201
ITEM
13.
DESCRIPTION
SELF TEST Key
ITEM
19.
Enters Self Test screen onto the
DISPLAY.
14.
15.
16.
20.
M O N I T O R C o n n e ct o r ( J1 0 0 5 6 )
B N C t yp e co n n e ct o r p r o vi d e s
interrogation and reply pulses clipped at
50% amplitude point to preserve pulse
shape.
21.
I N T E R R I n d i ca t o r
Illuminates when the Test Set receives a
valid interrogation signal.
RPLY TEST Key
Enters Reply Test screen onto the
DISPLAY. The intruder selected in the
Setup #1 Menu determines whether the
TCAS-201 displays the ATCRBS or Mode
S Reply Test screen.
I N T E R R V I D E O C o n n e ct o r ( J1 0 0 5 4 )
B N C t yp e co n n e ct o r p r o vi d e s
demodulated (linearly detected)
interrogation (only when direct
connection with UUT is used) for use
with an Oscilloscope.
MON Key
Enters Monitor screens onto the
DISPLAY. When operating in ATCRBS,
the TCAS-201 displays the WhisperShout Monitor screen. When operating
in Mode S, the TCAS-201 displays the
Surveillance Monitor screen. Pressing
the MON Key from the Surveillance
Monitor screen enters the Broadcast
Monitor screen onto the DISPLAY.
DESCRIPTION
22.
R E P L Y I n d i ca t o r
Illuminates when the Test Set generates
a reply signal.
DISPLAY
LCD readout displays various test
scr e e n s.
17.
RF I/O Connector (J10058)
CAUTION:
MAXIMUM INPUT POWER
MUST NOT EXCEED
+58 DBM (631 W).
TNC type connector provides for RF input
and output when directly connected with
the UUT (Direct Connect).
18.
ANTENNA Connector (J10057)
CAUTION:
DO NOT TRANSMIT
DIRECTLY INTO ANTENNA
TERMINAL. MAXIMUM
OVER-THE-AIR INPUT
POWER MUST NOT
EXCEED 0.5 W.
BNC type connector is used with the Test
Set Antenna (Flat Antenna or Flexible
Antenna). Over-the-air testing of the
UUT is accomplished through this
connector. The connector cover, when
a t t a ch e d , p r o v i d e s t h e 5 0 Ω l o a d
required when connecting the RF I/O
C o n n e c t o r t o t h e U U T ( D i r e c t C o n n e ct ) o r
running the Self Test.
1-2-2
Page 4
Jan 1/04
P
S,
EM
ST
SY
Hz
0M Hz
103 090M
S/N
1
IN
GA AIN
G
.
INC
24.
U
23.
AN
TE
H NN
R OL A I
2. AN OT D A NS
A
T
D TE TE NT RU
3. PO EP NN . P EN C
R A O N T
S W ES U IN A IO
AN TA ER S ND T UP N F
D
R
4. (1 TE TI TE AN ER IR RIG OR
.
N S T
E
D 8 M NN G T EN TE C HT PO
PO EP ET A AT AV NA ST TL , D W
Y
S
W RE ER LO G ER S . A O ER
T NO T
ER SS S W RO AG W
AI T ES
). L U I IT
TE PO
R
Y N NG CH
T
C
U D . T
ST W
R
PW L
AF
E
O
EV
AV R
S
A
T
TA
R EL
ER SW
D ,
R
AG IT
6 M
T
FE O
IN CH
ET VE
G T
. O
ST
O
P
ITEM
1.
O PERATIO N MANUAL
TCAS- 201
2.2 FLAT ANTENNA
Refer to 1-2-2, Figures 2 and 3.
DESCRIPTION
ANTENNA PUSH BUTTON Switch
Starts or stops testing, same as the
RUN/STOP Key.
FLAT ANTENNA Connector (J29001)
BNC type connector is used to connect
Flat Antenna to TCAS-201 Test Set.
23
i
dB Bi
d
24
8507007
Flat Antenna
Figure 3
1-2-2
Page 5
Ja n 1 / 0 4
O PERATIO N MANUAL
TCAS- 201
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 .
1-2-2
Page 6
Jan 1/04
O PERATIO N MANUAL
TCAS- 201
3. PERFORMANCE EVALUATION
3.1 GENERAL
3.2 SELF TEST
T h e T C A S - 2 0 1 i s e q u i p p e d w i t h a S e l f T e st f o r
q u i ck p e r f o r m a n c e e v a l u a t i o n a n d D i a g n o s t i c s
f o r s i g n a l v e r i f i c a t i o n . S e l f T e s t c h e cks t h e
D i g i t a l M o d u l e ( D i g i t a l I F P C B o a r d A sse m b l y
a n d F r o n t P a n e l P u l s e P C B o a r d A s se m b l y
functions), Power Supply/Battery and RF
Module (RF Assembly functions) for
operational capability. Diagnostics are used to
v e r i f y t h e T C A S - 2 0 1 i s t r a n s m i t t i n g co r r e ct
replies and accurately reading incoming power
levels.
Refer to 1-2-3, Figure 4.
Refer to 1-2-2, Figure 2 for location of
c o n t r o l s , co n n e c t o r s a n d i n d i c a t o r s .
STEP
PROCEDURE
1.
Press POWER Key.
2.
P r e ss S E L F T E S T K e y t o e n t e r S e l f T e st
scr e e n . ( T h e T C A S - 2 0 1 d i sp l a ys r e su l t s
o f t h e l a st S e l f T e st . )
3.
T e r m i n a t e A N T E N N A C o n n e ct o r ( J1 0 0 5 7 )
w i t h 5 0 Ω l o a d co n n e ct o r co ve r .
4.
Press RUN/STOP Key to initiate Self
T e s t . ( T h e t o p l i n e d i s p l a y s t e st n a m e s
while testing and indicates PASSED or
F A I L U R E a t co m p l e t i o n . T h e T C A S - 2 0 1
d i s p l a y s a n e i g h t - d i g i t h e x a d e ci m a l e r r o r
c o d e w i t h a n y f a i l u r e i n d i c a t i o n s. A l so ,
t h e T C A S - 2 0 1 d i sp l a ys a P A S S E D o r
FAILED indication for each
module/assembly.)
5.
V e r i f y a l l m o d u l e s / a s s e m b l i e s p a sse d
t e st .
NOTE:
I f S e l f T e st i n d i ca t e s a f a i l u r e ,
refer to 1-2-3, Table 2 for error
c o d e d e f i n i t i o n s . I f b a t t e r y f a i l s,
refer to para 1-2-1.6 for Battery
R e ch a r g i n g . I f a n y o t h e r f a i l u r e
o ccu r s, r e f e r m a i n t e n a n ce t o
q u a l i f i e d s e r v i c e t e c h n i ci a n s.
1-2-3
Page 1
Ja n 1 / 0 4
O PERATIO N MANUAL
TCAS- 201
** SELF TEST – PASSED **
RF MODULE: PASSED
DIGITAL MODULE: PASSED
POWER SUPPLY/BATTERY: PASSED
Press run to start
** SELF TEST – FAILURE ØØØØØØØ2 **
RF MODULE: FAILED
DIGITAL MODULE: PASSED
POWER SUPPLY/BATTERY: PASSED
Press run to start
S a m p l e S e l f T e st S cr e e n s
Figure 4
TEST
LO Control
GROUP
RF
VERIFIES
FAILURE
CODE (H)
RUNNING
ORDER
Valid ON/OFF status
00000001
2
LO Detect
RF
LO is locked.
00000002
12
RF Detect
RF
TX level out/attenuation
00000004
13
Battery
Power Supply/
Battery
Voltage is within correct
voltage range.
00000010
1
Non-Volatile RAM
Battery
Power Supply/
Battery
Battery has sufficient power for
RAM to retain memory.
00000020
Only on
power-up
DSP Initialization
Digital
Handshake routine
00000040
14
UART
Digital
RS-232 loop back
00400000
8
RAM
Digital
Dual Port RAM (DPR)
01000000
3
Video RAM
02000000
4
Non-Volatile RAM
04000000
6
Display RAM
08000000
5
Attenuator #1
Digital
Level at endline diodes
10000000
9
Attenuator #2
Digital
Level at midline diodes
20000000
9
LO Compensation
Digital
DCXO control voltage
40000000
11
LED
Digital
Interrogation and reply drivers
80000000
7
NOTE:
Multiple failures are indicated by the sum of the error codes.
NOTE:
If the DPR Test fails, the Self Test does not run the subsequent RAM tests.
Self Test Error Code Definitions
Table 2
1-2-3
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O PERATIO N MANUAL
TCAS- 201
3.3 DIAGNOSTICS
Refer to 1-2-3, Figure 5.
** DIAGNOSTICS **
SIGNAL TYPE: MODE C REPLY
ATTENUATION: 1Ø.Ø dB
Press RUN to start
S a m p l e D i a g n o st i cs S cr e e n
Figure 5
CAUTION:
STEP
DO NOT OPERATE
DIAGNOSTICS WITH ANTENNA
CONNECTED TO TCAS-201
TEST SET. TRANSMISSION
SIGNALS USED IN
DIAGNOSTICS MAY INTERFERE
WITH OTHER AREA
TRANSPONDER OPERATION
AND/OR VIOLATE FCC RULES
AND REGULATIONS, PART 87,
GOVERNING SIGNAL
TRANSMISSIONS FOR LAND
TEST STATIONS.
P r e s s S E L F T E S T K e y t o e n t e r S e l f T e st
scr e e n .
2.
P r e s s e i t h e r o f t h e S E L E C T K e ys t o e n t e r
Diagnostics screen.
CAUTION:
SIGNAL TYPE:
S e t r e p l y o r t e st si g n a l t r a n sm i t t e d b y
T C A S - 2 0 1 . ( T h e sa m e r e p l y si g n a l i s
used in the Reply and Scenario
T e st s. ) R e f e r t o 1 - 2 - 3 , T a b l e 3 f o r
choice of signals.
NOTE:
S e t a t t e n u a t i o n o f i n c o m i n g si g n a l
and TCAS-201 output, from 0.0 to
5 0 . 0 d B . ( A si n g l e S L E W K e y
depression changes value by 0.5 dB.
C o n st a n t S L E W K e y d e p r e ssi o n
c h a n g e s v a l u e i n 1 . 0 d B s t e p s. )
5.
Reply generation may be tested
by running Diagnostics Test with
or without connecting anything
to the TCAS-201 Test Set.
Use SLEW Keys to change values or
si g n a l t y p e . U s e S E L E C T K e ys t o
change items. (Cursor line indicates
item selected.)
Reply type signals are
t r a n sm i t t e d w i t h a f i xe d P R F
o f 1 0 0 . T h e T e st S e t d o e s
not need to be interrogated
t o s e n d o u t r e p l i e s.
Information loaded into
r e s p e ct i v e R e p l y T e s t
screens determine the data
sent in replies.
ATTENUATION:
MAXIMUM INPUT TO THE RF I/O
CONNECTOR CANNOT EXCEED
+59 dBm (800 W).
Connect an interrogator to RF I/O
Connector, for testing TCAS-201
interrogation decoder.
NOTE:
4.
PROCEDURE
PROCEDURE
1.
3.
STEP
Press RUN/STOP Key to initiate test.
NOTE:
6.
I f S I G N A L T Y P E : i s se t t o D S P
MEASURE =, a number appears
a f t e r t h e = si g n co r r e sp o n d i n g t o
the incoming CW signal
amplitude as calculated by the
DSP.
Press RUN/STOP Key to terminate test.
1-2-3
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TCAS- 201
SIGNAL TYPE
DEFINITION
USED IN
MODE C REPLY
ATCRBS Reply
Scenario and Reply
Testing
DF0 ACQUISITION
Mode S Reply
Replies to UF0 or UF16,
when AQ=1 and RL=0
DF0 TRACKING
Mode S Reply
Replies to UF0 or UF16,
when AQ=0 and RL=0
DF11 SQUITTER
Mode S Squitter
Transmitting Squitters
DF16 ACQUISITION
Mode S Reply
Replies to UF0 or UF16,
when AQ=1 and RL=1
DF16 TRACKING
Mode S Reply
Replies to UF0 or UF16,
when AQ=0 and RL=1
CW
Continuous Wave
TCAS-201 Calibration
NULL
No Signal
TCAS-201 Calibration
DSP_MEASURE
(not an output signal) Average calculation
of input CW signal level
TCAS-201 Calibration
Diagnostics Signal Definitions
Table 3
1-2-3
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O PERATIO N MANUAL
TCAS- 201
4. GENERAL OPERATING PROCEDURES
4.1 GENERAL
T h i s se ct i o n c o n t a i n s o p e r a t i n g i n s t r u c t i o n s f o r
the TCAS-201 Ramp Test Set. The general
p r o ce d u r e s c o n t a i n e d i n t h e o p e r a t i n g
instructions identify the Controls, Connectors,
Indicators and Display Screens used in TCAS201 operation. Also included is a general
outline of what tests can be performed with the
T C A S - 2 0 1 T e s t S e t a n d a r e c o m m e n d e d t e st
p r o c e d u r e . F o r s p e c i f i c U n i t U n d e r T e st ( U U T )
Procedures, refer to the appropriate UUT
Manual.
R e f e r t o 1 - 2 - 2 , F i g u r e s 2 a n d 3 f o r l o ca t i o n o f
c o n t r o l s , co n n e c t o r s a n d i n d i c a t o r s .
The TCAS-201 Ramp Test Set tests the
operation and installation of the TCAS
i n t e r r o g a t o r i n a r a m p e n v i r o n m e n t . T h e T e st
S e t i n c o r p o r a t e s f o u r b a s i c f u n c t i o n s:
Hierarchy of Operation:
I n i t i a t i n g T e st S e t o p e r a t i o n f r o m S ce n a r i o
T e st scr e e n o r S t a r t - u p scr e e n a l so
e n a b l e s R e p l y T e s t a n d M o n i t o r f u n ct i o n s
( d yn a m i c o p e r a t i o n ) .
Initiating Test Set operation from Reply
Test screen also enables the Monitor
f u n ct i o n ( st a t i c o p e r a t i o n ) .
Initiating Test Set operation from any
Monitor screen enables only the Monitor
f u n ct i o n ( R e p l i e s a r e n o t g e n e r a t e d ) .
NOTE:
Any screen may be entered or
e xi t e d a s d e si r e d . E d i t s m a y b e
entered while the TCAS-201 is
p e r f o r m i n g a t e st o p e r a t i o n .
Scenario Test (SCEN Key) provides
si m u l a t e d e n c o u n t e r s w i t h i n t r u d i n g M o d e S
or Mode C aircraft.
4.2 START-UP
Reply Test (RPLY TEST Key) allows the
user to generate Mode S or Mode C replies
to TCAS interrogations. The TCAS-201
b e co m e s a p r o g r a m m a b l e R e p l y G e n e r a t o r .
4.2.1
M o n i t o r ( M O N K e y ) p r o v i d e s a co n ve n i e n t
way to look at Mode S interrogation
i n f o r m a t i o n , T C A S B r o a d c a s t M e ssa g e s
a n d A T C R B S W h i sp e r - S h o u t se q u e n ce s.
P o w e r & F r e q u e n c y ( P W R T E S T K e y)
accurately measures Peak Pulse Power or
Effective Radiated Power (ERP) and
Frequency of the interrogator.
Refer to 1-2-4, Figure 6.
General
P r e ssi n g t h e T C A S - 2 0 1 T e st S e t P O W E R K e y
ca u se s t h e S t a r t - U p scr e e n t o a p p e a r o n t h e
D I S P L A Y . I n f o r m a t i o n co n t a i n e d i n t h i s scr e e n
i n d i ca t e s so f t w a r e ve r si o n s o f t h e
M i cr o p r o ce ssi n g U n i t ( M P U ) a n d D i g i t a l S i g n a l
P r o ce sso r ( D S P ) u se d . T h e S t a r t - U p scr e e n
a l so p r o vi d e s e a sy a cce ss t o t h e S ce n a r i o T e st
f u n ct i o n ( p a r a 1 - 2 - 4 . 2 . 2 ) . A f t e r a p p r o xi m a t e l y
ten sec without any Keypad operation, the
T C A S - 2 0 1 r e p l a ce s t h e S t a r t - U p scr e e n o n t h e
D I S P L A Y w i t h t h e l a st scr e e n u se d b e f o r e
p o w e r w a s r e m o ve d .
** TCAS-2Ø1 RAMP TEST SET **
MPU VERS # 4.ØØ, DSP VERS # 1.ØØ
RECALL/RUN SCENARIO #Ø
SLEW scenario - RUN to recall/execute
S t a r t - U p S cr e e n
Figure 6
1-2-4
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TCAS- 201
4.3 SETUP
4.2.2
Scenario Test Operation From StartUp Screen
STEP
PROCEDURE
4.3.1
Setup #1 Menu
Refer to 1-2-4, Figure 7.
1.
Use SLEW Keys to select scenario from
0 to 9. (The default is the last scenario
stored or recalled.)
2.
Press RUN/STOP Key to recall selected
sce n a r i o f r o m s t o r a g e . ( T h e D I S P L A Y
shows the Scenario Test screen.)
3.
Position Test Set according to stored
information in Setup #1 Menu screen.
Refer to storage logs in TCAS-201
O p e r a t o r ’s G u i d e o r p r e s s S E T / C O N T
Key to view Setup #1 Menu screen.
4.
Press RUN/STOP Key to initiate Scenario
T e st .
The UUT distance and antenna information
established in Setup #1 Menu screen
determines the attenuation critical to power
m e a su r e m e n t s i n t h e P o w e r & F r e q u e n cy
f u n ct i o n ( 5 0 0 f t [ 1 5 2 . 4 m ] = 0 d B a t t e n u a t i o n ) .
The storage and recall of scenarios are also
accomplished from Setup #1 Menu screen.
** SETUP #1 **
INTRUDER TYPE: ATCRBS
UUT DIST: HORIZ=3Ø ft VERT=6 ft
ALT REPORTING:ON
STORE:Ø
RECALL:Ø
GAIN_1Ø3Ø= 9.3 dB LOSS=1.Ø dB
** SETUP #1 - MONITOR/REPLY RUNNING **
INTRUDER TYPE: MODE-S SQUITTERS: ON
UUT DIST: HORIZ=15Ø ft VERT=16 ft
ALT REPORTING: ON
STORE:Ø
RECALL:Ø
GAIN_1Ø3Ø= 9.3 dB LOSS=1.Ø dB
** SETUP #1 - SCENARIO RUNNING **
INTRUDER TYPE: MODE-S SQUITTERS: OFF
UUT DIST: HORIZ=15Ø ft VERT=16 ft
ALT REPORTING: ON
STORE:Ø
RECALL:Ø
GAIN_1Ø3Ø= 9.3 dB LOSS=1.Ø dB
S a m p l e S e t u p # 1 M e n u S cr e e n s
Figure 7
1-2-4
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O PERATIO N MANUAL
TCAS- 201
NOTE:
Setup information should be entered
before conducting test operations.
STEP
PROCEDURE
1.
Position TCAS-201 Test Set Antenna
within effective coverage area shown in
1-2-4, Figure 8; depending on mode of
o p e r a t i o n ( A T C R B S o r M o d e S ) . P o si t i o n
T e st S e t a s f o l l o w s :
STEP
P l a c e T e s t S e t i n a l i n e - o f - si g h t p a t h
from UUT Antenna to Test Set
Antenna.
For best power measurements, place
Test Set so large objects are not
b e t w e e n T e s t S e t a n d U U T a i r cr a f t .
Refer to 1-2-4, Figure 19.
PROCEDURE
D u e t o h i g h d e n s i t y p o w e r r e d u ct i o n
i n so m e T C A S i n t e r r o g a t o r s, M o d e S
effective coverage distance may be
dependent upon the TCAS-201
si m u l a t e d r a n g e . F o r t h o se u n i t s,
p l a ce T e st S e t a cco r d i n g t o 1 - 2 - 4 ,
F i g u r e 9 . F o r si m u l a t e d r a n g e s
within 1 nmi, position Test Set
Antenna within 50 ft (15.24 m) of
UUT Antenna.
To average out the ramp multipath
co m p o n e n t i n t h e P o w e r & F r e q u e n cy
function, place the Test Set at a
horizontal distance <12 times the
vertical distance (distances between
t h e T e st S e t A n t e n n a a n d U U T
A n t e n n a ) . ( I f n o t , t h e T e st S e t
d i sp l a ys * * B A D H O R I Z / V E R T * * i n
the fourth line of the Setup #1 Menu
scr e e n . )
500 FEET
(152 METERS)
250 FEET
(76 METERS)
130 FEET
(40 METERS)
ATCRBS
COVERAGE
MODE S
COVERAGE
8518013
T C A S - 2 0 1 E f f e ct i ve T e st C o ve r a g e
Figure 8
1-2-4
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TCAS- 201
600 (183)
MAXIMUM GROUND DISTANCE,
TEST SET TO UUT
IN ft (m)
550 (168)
500 (152)
450 (137)
400 (122)
350 (107)
300 (91)
250 (76)
MODE S
COVERAGE
200 (61)
150 (46)
100 (31)
50 (15)
0
1
2
3
4
5
6
7
8
9
10
11
12
SIMULATED RANGE IN nmi
8505001
Mode S Coverage Within 12 nmi Simulated Range
Figure 9
STEP
PROCEDURE
Multipath cancellation can reduce
e f f e ct i ve T e s t S e t r a n g e a t l o w a n g l e s
and low UUT Antenna height from the
ramp. For best results, the UUT
Antenna height from the ramp should
be >18 in (46 cm). Position Test Set
Antenna to set reflection angle (UUT
Antenna to Test Set Antenna to ramp)
>10°.
I f t e st i n g i s c o n d u c t e d i n s i d e a
building, position the Test Set
Antenna as close as possible to the
a p p l i ca b l e U U T A n t e n n a ( s ) .
Position Test Set Antenna ≤20 ft
(6.1 m) if covering UUT Antenna
being tested with Antenna Shield
(complying with FAA requirements
when UUT simulates altitude).
STEP
PROCEDURE
W h e n t e st i n g A T C R B S o p e r a t i o n
through bottom UUT Antenna,
position Test Set Antenna ≤94 ft
(28.65 m) from UUT Antenna. For
exclusive bottom antenna testing,
p o s i t i o n T e s t S e t A n t e n n a s o d i s t a n ce
t o t o p U U T A n t e n n a ( s) i s
approximately five times greater than
distance to bottom UUT Antenna.
U se a i r cr a f t b o d y t o sh i e l d t o p U U T
A n t e n n a ( s) f r o m T e st S e t A n t e n n a .
Approximately 5 ft (1.52 m) is the
suggested distance for testing the
bottom UUT Antenna.
F o r d i r e ct co n n e ct i o n , co n n e ct U U T t o
T C A S - 2 0 1 R F I / O C o n n e ct o r a n d a d j u st
Setup #1 Menu screen (HORIZ= field to
0 and LOSS: field according to cable
u se d ) . ( T e st S e t d i sp l a ys * * D I R E C T
CONNECT ** in the fourth line. The
T C A S - 2 0 1 si m u l a t e s 5 3 f t [ 1 6 . 1 5 m ] o f
distance and provides 19.5 dB
attenuation through a direct connection.)
1-2-4
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TCAS- 201
STEP
PROCEDURE
2.
With power On, press SET/CONT Key to
enter Setup #1 Menu screen. (TCAS-201
d i sp l a y s i n f o r m a t i o n f r o m l a s t S e t u p # 1
Menu.)
T h e t o p l i n e o f t h e D I S P L A Y i n d i ca t e s
when other functions are currently
operating. When the Monitor or Reply
Test function is operating, the Test Set
displays ** SETUP - MONITOR/REPLY
R U N N I N G * * . W h e n S c e n a r i o T e st
function is operating, the Test Set
displays ** SETUP - SCENARIO
RUNNING **.
3.
STEP
PROCEDURE
UUT DIST: VERT=
E n t e r ve r t i ca l d i st a n ce , i n f e e t ( 0 t o
1 0 0 f t ) , f r o m t h e T e st S e t A n t e n n a t o
U U T A n t e n n a . ( A si n g l e S L E W K e y
depression changes distance by 1 ft and
co n t i n u o u s d e p r e ssi o n ch a n g e s d i st a n ce
i n 5 f t i n cr e m e n t s. )
NOTE:
Use SELECT Keys to select items and
S L E W K e y s t o c h a n g e v a l u e s . ( C u r so r
line underneath indicates item selected.)
INTRUDER TYPE:
Enter mode, MODE-S or ATCRBS, of
si m u l a t e d i n t r u d e r a i r c r a f t ( T C A S - 2 0 1 ) .
(INTRUDER TYPE: field sets mode of
o p e r a t i o n f o r t h e S c e n a r i o , R e p l y T e st
and Monitor functions.)
T h e T C A S - 2 0 1 u se s b o t h U U T
distances to compute line of
si g h t d i st a n ce . T h e T e st S e t
d e t e r m i n e s o u t p u t p o w e r l e ve l
u s i n g t h e l i n e o f s i t e d i st a n ce
calculation. The resulting
o u t p u t p o w e r l e v e l i s su f f i ci e n t
t o o v e r c o m e r e d u c e d e f f e ct i ve
power caused by multipath and
p a t h l o ss. H i g h e r o r l o w e r
power levels may be obtained by
increasing or decreasing the
value entered in the UUT DIST:
HORIZ= field.
ALT REPORTING:
I f I N T R U D E R T Y P E i s s e t t o M O D E S , se t
SQUITTERS to ON to transmit DF11
squitters once every sec (normal
o p e r a t i o n ) o r O F F t o d e a c t i v a t e sq u i t t e r s.
S e t t o O N f o r r e p o r t i n g si m u l a t e d a i r cr a f t
altitude information in ATCRBS (Mode C)
or Mode S replies. Set to OFF for
sending replies without altitude
information, simulating transponders
without altitude encoders.
UUT DIST: HORIZ=
STORE:
E n t e r h o r i z o n t a l g r o u n d d i s t a n ce , i n f e e t ,
from TCAS-201 Antenna to UUT Antenna.
Set to 0 for a direct connection. Set
from 1 to 500 ft for Mode S. Set from
1 to 250 ft for ATCRBS. (Single SLEW
Key depressions change distance by 1 ft.
Continuous depression changes distance
in 10 ft increments.)
U se i n d a t a st o r a g e . R e f e r t o p a r a
1 - 2 - 4 . 3 . 3 f o r st o r i n g d a t a f r o m e ve r y
f u n c t i o n s c r e e n i n o n e o f t h e t e n st o r a g e
locations (0 to 9).
SQUITTERS:
RECALL:
U se i n r e ca l l i n g d a t a . R e f e r t o p a r a
1-2-4.3.3.
GAIN_1030=
Enter gain, from 0 to 20.9 dBi, of
a n t e n n a u s e d w i t h t h e T C A S - 2 0 1 T e st
S e t a t t h e 1 0 3 0 M H z r e c e i v e f r e q u e n cy.
F o r t h e F l a t A n t e n n a u se t h e g a i n n o t e d
o n t h e F l a t A n t e n n a . ( A si n g l e S L E W
Key depression changes gain by 0.1 dBi
and continuous depression changes gain
in 1.0 dBi increments.)
1-2-4
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TCAS- 201
4.3.2
STEP
PROCEDURE
Refer to 1-2-4, Figure 10.
LOSS=
Enter Coaxial Cable Loss, in dB, of
Antenna Cable used with the TCAS-201
T e s t S e t o r d i r e c t c o n n e c t c a b l e . L o ss i s
noted on Antenna Cable included with
t h e T e st S e t . A s i n g l e S L E W K e y
d e p r e ssi o n c h a n g e s l o s s b y 0 . 1 d B a n d
continuous depression changes loss in
0 . 5 d B i n cr e m e n t s . M a x i m u m l o s s i s
9.9 dB.
4.
Setup #2 Menu
If desired, perform procedure in para
1-2-4.3.2 to edit Setup #2 Menu screen
or press any key to exit Setup #1 Menu
scr e e n .
Setup #2 Menu allows the operator to control
vi su a l p e r f o r m a n ce o f t h e D I S P L A Y a n d
d y n a m i c o p e r a t i o n l i m i t s . V i s u a l p e r f o r m a n ce
co n t r o l i n cl u d e s a d j u st m e n t o f D I S P L A Y
ch a r a ct e r i st i cs f o r d i r e ct su n l i g h t , o ve r ca st
ski e s o r a s d e si r e d b y t h e o p e r a t o r . S e t u p # 2
Menu sets the dynamic operation limits for
range and altitude. Setting maximum and
minimum range and altitude limits provides for
repeatable scenarios that only run through the
l i m i t s r e q u i r e d f o r t h a t p a r t i cu l a r t e st .
STEP
PROCEDURE
1.
From Setup #1 Menu screen, press
SET/CONT Key to enter Setup #2 Menu
scr e e n . ( T C A S - 2 0 1 d i sp l a ys i n f o r m a t i o n
f r o m l a st S e t u p # 2 M e n u . I f p o w e r w a s
deactivated since the last Setup #2 Menu
operation, the TCAS-201 defaults the
CONTRAST: and BACKLIGHT: fields to
0.)
2.
E n t e r i n f o r m a t i o n u si n g S E L E C T K e ys t o
se l e ct i t e m s a n d S L E W K e ys t o ch a n g e
va l u e s. ( C u r so r l i n e u n d e r n e a t h
i n d i ca t e s i t e m se l e ct e d . )
CONTRAST:
A d j u st D I S P L A Y co n t r a st b y se t t i n g a n
o f f se t f r o m - 5 0 ( d a r ke st co n t r a st ) t o + 5 0
( l i g h t e st co n t r a st ) . ( A si n g l e S L E W K e y
depression changes contrast offset by
one and continuous depression changes
co n t r a st o f f se t i n i n cr e m e n t s o f f i ve . )
** SETUP #2 **
CONTRAST:+Ø
BACKLIGHT: +Ø
RANGE MAX: +3Ø nm
MIN: Ø nm
ALT MAX: +126,7ØØ ft
MIN: Ø ft
MODE: TCAS-II
S a m p l e S e t u p # 2 M e n u S cr e e n
Figure 10
1-2-4
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TCAS- 201
STEP
PROCEDURE
STEP
PROCEDURE
BACKLIGHT:
ALT MAX:
A d j u s t D I S P L A Y b a c k l i g h t b y se t t i n g a n
offset from -50 (darkest backlight) to +50
(brightest backlight). (A single SLEW
Key depression changes backlight offset
b y o n e a n d c o n t i n u o u s d e p r e s si o n
ch a n g e s b a c k l i g h t o f f s e t i n i n c r e m e n t s o f
f i ve . )
Set the maximum altitude limit from 1 0 0 0 t o 1 2 6 , 7 0 0 f t f o r S ce n a r i o T e st
o p e r a t i o n . ( W h e n t h e s c e n a r i o r e a ch e s
maximum altitude [climbing intruder], the
T C A S - 2 0 1 T e st S e t b e co m e s a
descending intruder starting at the
m a xi m u m a l t i t u d e . S i n g l e S L E W K e y
depressions change altitude by 100 ft
and continuous depression changes
altitude in 1000 ft increments.)
NOTE:
Offsetting backlight in the
p o si t i ve d i r e ct i o n i n cr e a s e s
current usage up to 10% and is
not recommended when
operating on battery power.
Setting BACKLIGHT: field to ≤0
reduces current drain.
ALT MIN:
Set the minimum altitude limit from
- 1 0 0 0 t o 1 2 6 , 7 0 0 f t f o r S ce n a r i o T e st
o p e r a t i o n . ( W h e n t h e s c e n a r i o r e a ch e s
minimum altitude [descending intruder],
t h e T C A S - 2 0 1 T e st S e t b e co m e s a
climbing intruder starting at the minimum
a l t i t u d e . S i n g l e S L E W K e y d e p r e ssi o n s
c h a n g e a l t i t u d e b y 1 0 0 f t a n d co n t i n u o u s
depression changes altitude in 1000 ft
i n cr e m e n t s. )
RANGE MAX:
Set the maximum range limit from 0 to
3 0 n m ( n a u t i c a l m i l e s ) f o r S c e n a r i o T e st
operation. (When the scenario reaches
maximum range [outgoing intruder], the
T C A S - 2 0 1 T e s t S e t b e c o m e s a n i n co m i n g
intruder starting at the maximum range
and returning to the UUT along the same
flight path. Single SLEW Key
depressions change range by 1 nmi and
co n t i n u o u s d e p r e s s i o n c h a n g e s r a n g e i n
5 nmi increments.)
NOTE:
RANGE MIN:
Set the minimum range limit from 0 to
30 nm for Scenario Test operation.
(When the scenario reaches minimum
range [incoming intruder], the TCAS-201
T e st S e t b e c o m e s a n o u t g o i n g i n t r u d e r
st a r t i n g a t t h e m i n i m u m r a n g e a n d
departing along the same flight path.
S i n g l e S L E W K e y d e p r e s s i o n s ch a n g e
range by 1 nmi and continuous
depression changes range in 5 nmi
increments.)
NOTE:
T h e S e t u p # 2 M e n u sc r e e n
prohibits an operator from
entering maximum settings
(range or altitude) below
minimum settings or minimum
settings above maximum
settings.
I n t h e S ce n a r i o T e st f u n ct i o n
(para 1-2-4.4), when range
r e a ch e s m i n i m u m o r m a x i m u m
limits, altitude direction
a u t o m a t i c a l l y r e v e r s e s. T h e
si m u l a t e d a l t i t u d e o f t h e T C A S 201 is the same each time the
m i n i m u m r a n g e i s r e a ch e d . T h e
U U T s i m u l a t e d a l t i t u d e ca n b e
a d j u s t e d a c c o r d i n g l y f o r t e st i n g
p u r p o s e s . T h e p r o c e ss
m a i n t a i n s t h e sa m e T C A S - 2 0 1
simulated flight path throughout
the running of one scenario
(unless edits are made while
running).
MODE:
Set to TCAS-II to detect and reply
accordingly to All-Call interrogations or
T C A S - I / S K Y t o r e p l y w i t h cu r r e n t l y
si m u l a t e d m o d e ( A T C R B S o r M o d e S ) t o
any All-Call interrogations.
3.
P r e ss a n y ke y t o e xi t S e t u p # 2 M e n u
screen.
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4.3.3
Data Storage
D a t a st o r a g e i s u s e d t o s a v e d a t a f r o m a l l
scr e e n s. S e t u p M e n u , R e p l y T e s t a n d
S ce n a r i o T e st d a t a c a n b e s t o r e d t o p r o v i d e u p
to ten different preset test operations.
A p p l i c a t i o n s v a r y w i t h o p e r a t o r p r e f e r e n c e s,
TCAS systems, aircraft and the ramp
e n vi r o n m e n t s. T h e n u m b e r o f a p p l i c a t i o n s i s
e xt e n si ve . G u i d e l i n e s s e t f o r t h i n a p p l i c a b l e
RTCA documents (DO-185), FAA Advisory
C i r cu l a r s ( # 2 0 - 1 3 1 ) a n d e a c h p a r t i c u l a r U U T
m a n u a l a r e r e co m m e n d e d . S o m e s u g g e s t e d
i t e m s t o b e co n si d e r e d w h e n s e t t i n g a n d
st o r i n g d a t a a r e :
STEP
ATCRBS or Mode S intruders (Setup #1
Menu)
4.3.4
Multiple UUT Antenna distances (Setup #1
Menu)
V a r i a b l e D i sp l a y c o n d i t i o n s ( S e t u p # 2
Menu)
D yn a m i c i n t r u d e r s w i t h v a r i a b l e c l o s i n g
r a t e s ( S ce n a r i o T e s t )
PROCEDURE
4.
U se S L E W K e ys t o se l e ct st o r a g e
location number from 0 to 9.
5.
P r e ss R U N / S T O P K e y t o i n i t i a t e st o r a g e
or recall action. (A period displayed to
t h e r i g h t o f t h e st o r a g e n u m b e r i n d i ca t e s
the desired action has occurred.)
6.
Using pencil or erasable marker,
a n n o t a t e st o r a g e i n f o r m a t i o n i n st o r a g e
l o g s l o ca t e d i n t h e T C A S - 2 0 1 O p e r a t o r ’s
Guide.
RAM Reset
R A M R e se t cl e a r s a l l st o r e d m e m o r y a n d
resets all parameters with default values.
To accomplish a RAM Reset, simultaneously
p r e ss b o t h S E L E C T K e ys a n d t h e P O W E R K e y.
NOTE:
All previously stored information is
lost when RAM Reset is accomplished.
Encounters with intruders descending or
c l i m b i n g a t v a r i a b l e r a t e s ( S c e n a r i o T e st )
Static intruders for bearing checks (Reply
Test)
Multiple Mode S addresses and variable
d i scr e t e sw i t c h s e t t i n g s d u r i n g R e p l y
Generation (Reply Test [Mode S])
D a t a r e ce i ve d f r o m t h e U U T c a n a l s o b e s a ve d .
Information currently in the Monitor and Power
& Frequency screens are stored each time the
st o r a g e p r o ce d u r e i s a c c o m p l i s h e d . I n
addition to manually storing received data, the
TCAS-201 automatically stores the latest test
i n f o r m a t i o n u n t i l a n e w t e st ( a n y f u n ct i o n ) i s
run.
T h e sa m e d e f a u l t i n f o r m a t i o n i s i n i t i a l l y s t o r e d
i n e a ch o f t h e t e n s t o r a g e l o c a t i o n s .
STEP
PROCEDURE
1.
Enter desired data into Setup, Scenario
T e st a n d R e p l y T e s t s c r e e n s .
2.
P r e ss S E T / C O N T K e y t o e n t e r S e t u p # 1
Menu screen.
3.
U s e S E L E C T K e ys t o se l e ct S T O R E : f i e l d
for storage or RECALL: field for recall.
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4.4 SCENARIO TEST
Refer to 1-2-4, Figure 11.
S ce n a r i o T e s t p r o v i d e s s i m u l a t e d p l a n n e d
e n c o u n t e r s w i t h M o d e C o r M o d e S i n t r u d e r s.
S c e n a r i o T e s t i s u s e d t o v e r i f y a u r a l a n d vi su a l
TCAS operation (Traffic and Resolution
A d vi so r i e s ) . D y n a m i c o p e r a t i o n a l l o w s
simulation of a complete and changeable flight
into and out of the TCAS range of operation.
Altering the range rate or altitude rate with the
sce n a r i o r u n n i n g s i m u l a t e s t w o - s t a g e
sce n a r i o s o r s e c o n d o r d e r d y n a m i c e n c o u n t e r s .
Intruding flight patterns, programmed from the
S ce n a r i o T e s t s c r e e n , c a n b e s a v e d i n d a t a
st o r a g e . I n i t i a l l y , t h e s a m e g e n e r a l d e f a u l t
sce n a r i o i s l o a d e d i n t o e a c h o f t h e t e n s t o r a g e
l o ca t i o n s.
STEP
PROCEDURE
1.
C o n n e ct U U T t o R F I / O C o n n e ct o r f o r
d i r e c t c o n n e c t i o n o r F l a t A n t e n n a ( f a ci n g
towards UUT Antenna) to Antenna
C o n n e ct o r .
2.
P e r f o r m S e t u p P r o ce d u r e a cco r d i n g t o
para 1-2-4.3.
3.
I f d i r e ct co n n e ct i o n i s n o t u se d , p e r f o r m
one of the following:
E i t h e r sh i e l d w i t h A n t e n n a S h i e l d
( r e f e r t o A p p e n d i x C ) o r d i sco n n e ct
and terminate UUT Antenna not being
t e st e d . D e a ct i va t e o t h e r a r e a
transponders or position
transponders at least three times the
S e t u p # 1 M e n u h o r i z o n t a l d i st a n ce
from Flat Antenna.
** SCENARIO TEST - RUNNING **
INTRUDER TYPE: ATCRBS
TIME:1:25;Ø:Ø4
RANGE: 12.8Ø nm
RATE:+54Ø kt
ALT: 8ØØØ ft
RATE:+15ØØ fpm
STATUS: NON-THREAT
W-S SEQUENCE INTERVAL: 1.00 sec
** SCENARIO TEST - RUNNING **
INTRUDER TYPE: ATCRBS
TIME:Ø:41;Ø:Ø6
RANGE: 3.95 nm
RATE:+35Ø kt
ALT: 1Ø,ØØØ ft
RATE:+Ø fpm
STATUS: PROXIMITY
W-S SEQUENCE INTERVAL: 1.ØØ sec
** SCENARIO TEST - RUNNING **
INTRUDER TYPE: MODE-S
TIME:Ø:39;Ø:46
RANGE: 5.86 nm
RATE:+54Ø kt
ALT: 9157 ft
RATE:+15ØØ fpm
STATUS: TRAFFIC
SURVEILLANCE INTERVAL: 1.00 sec
** SCENARIO TEST - RUNNING **
INTRUDER TYPE: MODE-S
TIME:Ø:23;1:Ø2
RANGE: 3.49 nm
RATE:+54Ø kt
ALT: 9552 ft
RATE:+15ØØ fpm
STATUS: RESOLUTION
SURVEILLANCE INTERVAL: 1.ØØ sec
S a m p l e S ce n a r i o T e st S cr e e n s
Figure 11
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STEP
PROCEDURE
STEP
ALT:
If UUT simulates altitude, shield UUT
Antenna being tested with Antenna
Shield. Refer to Appendix C. Either
shield with another Antenna Shield or
d i sco n n e c t a n d t e r m i n a t e U U T
Antenna(s) not being tested.
Deactivate other area transponders
or position transponders >50 ft
(15.24 m) from the Flat Antenna.
Position Flat Antenna ≤20 ft (6.1 m)
from UUT Antenna being tested.
4.
P r e s s S C E N K e y t o e n t e r S ce n a r i o T e st
scr e e n .
5.
Use SELECT Keys to select items and
S L E W K e ys t o c h a n g e v a l u e s . ( C u r s o r
line underneath indicates item selected.)
Enter simulated altitude, in feet above
se a l e ve l , o f t h e i n t r u d i n g a i r cr a f t ( T C A S 2 0 1 ) . ( I n A T C R B S m o d e , si n g l e S L E W
Key depressions change altitude by
1 0 0 f t . I n M o d e S , si n g l e S L E W K e y
depressions change altitude by 25 ft up
to 50,200 ft and by 100 ft for altitudes
≥50,200 ft. For all modes, continuous
depression changes altitude in 1000 ft
i n cr e m e n t s. )
ALT: RATE:
Enter simulated altitude change rate,
from 0 to r10,000 fpm, of intruding
a i r cr a f t . ( T h e si g n i n f r o n t o f t h e va l u e
indicates climbing [+] or descending [-].
S i n g l e S L E W K e y d e p r e ssi o n s ch a n g e
rate by 100 fpm and continuous
depression changes rate in 500 fpm
i n cr e m e n t s. )
RANGE:
E n t e r si m u l a t e d d i s t a n c e , i n n a u t i c a l
miles, between intruding aircraft (TCAS201) and UUT aircraft. (Single SLEW
K e y d e p r e ss i o n s c h a n g e r a n g e b y
0.1 nmi and continuous depression
ch a n g e s r a n g e i n 1 . 0 n m i i n c r e m e n t s . )
NOTE:
5.
P r e ss R U N / S T O P K e y t o i n i t i a t e S ce n a r i o
Test. (The top line indicates the
S ce n a r i o t e st i s r u n n i n g . T e st r u n s
continuously, repeating same flight
pattern as dictated by the values input in
the Scenario Test screen and limitations
set in the Setup #2 Menu screen. The
T C A S - 2 0 1 u se s t h e sa m e f l i g h t p a t h
going towards and moving away from the
UUT.)
6.
Monitor the following constantly changing
fields as desired:
Hardware limitations provide a
minimum range delay of 0.3 nmi.
RANGE: field values set
<0.3 nmi = 0.3 nmi.
RANGE: RATE:
Enter simulated velocity, from 0 to
50 kt, of intruding aircraft. (The sign in
front of the value indicates flight towards
the UUT [+] [closing] or away from the
UUT [-] [departing] and is changed
independently from the velocity value.
Single SLEW Key depressions change
ve l o ci t y b y 1 0 k n o t s a n d c o n t i n u o u s
d e p r e ssi o n c h a n g e s v e l o c i t y i n
50 knot increments.)
NOTE:
RANGE: and RANGE: RATE:
fields determine the first value
in the TIME: field (time until or
after simulated encounter).
PROCEDURE
TIME:
The Scenario Test screen displays two
d i f f e r e n t t i m e s, b o t h i n m i n u t e s a n d se c.
T h e f i r st t i m e i n d i ca t e s t i m e u n t i l o r a f t e r
simulated encounter (when the UUT and
TCAS-201 simulates occupying the same
a i r sp a ce ) . T h e st a r t i n g f i r st t i m e i s
dependent on the values inserted in the
R A N G E : a n d R A N G E : R A T E : f i e l d s. T h e
first time decreases when closing in on
the UUT and increases when departing
from the UUT.
The second time displayed is the total
r u n n i n g t i m e o f t h e cu r r e n t o r l a t e st
S ce n a r i o T e st o p e r a t i o n . F o r b o t h t i m e s,
the minimum time displayed is 0:00 and
the maximum time displayed is 9:59.
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STEP
PROCEDURE
STEP
PROCEDURE
RANGE:
ALT:
Range moves through the limits
e st a b l i sh e d i n t h e S e t u p # 2 M e n u scr e e n
a t t h e r a t e s e t i n t h e S c e n a r i o T e st
screen. The Scenario Test maintains the
same flight pattern for the incoming and
outgoing intruder throughout the running
of a single scenario (refer to 1-2-4,
Figure 12) and repeats continuously until
the test operation is terminated (Step 7).
Altitude moves through the limits
e s t a b l i s h e d i n t h e S e t u p # 2 M e n u scr e e n
a t t h e r a t e se t i n t h e S ce n a r i o T e st
scr e e n . S i m i l a r t o r a n g e , a l t i t u d e
changes are symmetrical, maintaining the
same levels with the outgoing pattern as
w i t h t h e i n co m i n g p a t t e r n ( r e f e r t o 1 - 2 - 4 ,
Figure 13).
NOTE:
T h e A L T : f i e l d m a y n o t r e a ch
limits established in Setup #2
Menu screen if the RANGE: field
r e a ch e s se t l i m i t s f i r st . T o
maintain set flight pattern, the
a l t i t u d e d i r e ct i o n r e ve r se s
automatically when the RANGE:
field reaches minimum or
maximum limits.
MAX
RANGE
START
MIN
8518019
S a m p l e I n t r u d e r F l i g h t P a t t e r n ( R a n g e F a ct o r )
Figure 12
MAX
ALT
MIN
MIN RANGE
REACHED
MAX RANGE
REACHED
TIME
8518020
S a m p l e I n t r u d e r F l i g h t P a t t e r n ( A l t i t u d e F a ct o r )
Figure 13
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STEP
PROCEDURE
STATUS:
Verify TCAS UUT visual operation with
the simulated TCAS-201 status (in
r e l a t i o n sh i p t o U U T ) s h o w n i n t h e
STATUS: field.
NOTE:
STEP
8.
PROCEDURE
P r e ss a n y ke y t o e xi t S ce n a r i o T e st
screen.
There are usually two to three
se c o f d e l a y ( t a r g e t a c q u i s i t i o n
time) between the start of
TCAS-201 operation and when
the UUT acquires the Test Set
as a target. When only one UUT
Antenna is being tested, the
target acquisition time
increases. Refer to Appendix E
for the target acquisition time
probabilities.
The TCAS-201 displays four different
st a t u s i n d i ca t i o n s :
NON-THREAT
Range is >4 nmi and time until
e n co u n t e r i s > 4 0 s e c .
PROXIMITY
Range is ≤4 nmi and time until
e n co u n t e r i s > 4 0 s e c .
TRAFFIC
T i m e u n t i l e n c o u n t e r i s ≤ 4 0 se c a n d
> 2 5 s e c.
RESOLUTION
Time until encounter is ≤25 sec.
INTERVAL:
Verify bottom line displays W-S
SEQUENCE INTERVAL (ATCRBS
intruders) or SURVEILLANCE INTERVAL
(Mode S intruders).
Verify time interval (start of one
sequence or interrogation to the start of
another sequence or interrogation).
If TCAS-201 displays: NO WHISPERSHOUT SEQUENCE or NO
SURVEILLANCE, no sequence or
interrogation was received within the
1.27 sec window for interval time.
7.
Press RUN/STOP Key to terminate test
operation.
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TCAS- 201
4.5 REPLY TEST
Refer to 1-2-4, Figure 14.
4.5.1
ATCRBS Operation
I n A T C R B S R e p l y T e s t , t h e T C A S - 2 0 1 b e co m e s
a Mode C Reply Generator or Transponder. If
ATCRBS Reply Test operation is initiated from
the ATCRBS Reply Test screen, the TCAS-201
si m u l a t e s a s t a t i o n a r y M o d e C T r a n sp o n d e r
( st a t i c o p e r a t i o n ) . I f A T C R B S R e p l y T e st
operation is initiated from the Scenario Test
s c r e e n , t h e T C A S - 2 0 1 s i m u l a t e s a m o vi n g o r
intruding aircraft, equipped with a Mode C
Transponder (dynamic operation). The
ATCRBS Reply Test can be used to evaluate
the ability of the UUT to receive and decode
A T C R B S r e p l i e s . T C A S b e a r i n g a c c u r a cy ca n
b e e va l u a t e d b y r u n n i n g t h e t e s t f r o m s p e c i f i c
t e st l o ca t i o n s . R a n g e c a n b e u s e d t o e v a l u a t e
t h e a b i l i t y o f t h e U U T t o a c c u r a t e l y se e t h e
delay and provide correct range information.
A l t i t u d e ca n b e u s e d t o v e r i f y t h e a b i l i t y o f t h e
UUT to decode Mode C replies. The TCAS-201
si m u l a t e s a t r a n s p o n d e r p r o v i d i n g i n c r e a s i n g l y
poor reception by decreasing the %REPLY:
field.
STEP
PROCEDURE
1.
C o n n e ct U U T t o T C A S - 2 0 1 R F I / O
C o n n e ct o r o r T C A S - 2 0 1 F l a t A n t e n n a
( f a ci n g t o w a r d s U U T A n t e n n a ) t o A n t e n n a
C o n n e ct o r .
2.
P e r f o r m t h e S e t u p P r o ce d u r e a cco r d i n g
to para 1-2-4.3. Set INTRUDER TYPE:
to ATCRBS.
3.
I f d i r e ct co n n e ct i o n i s n o t u se d , p e r f o r m
one of the following:
E i t h e r sh i e l d w i t h A n t e n n a S h i e l d
( r e f e r t o A p p e n d i x C ) o r d i sco n n e ct
and terminate UUT Antenna not being
t e st e d . D e a ct i va t e o t h e r a r e a
transponders or position
transponders at least three times the
S e t u p # 1 M e n u h o r i z o n t a l d i st a n ce
from Flat Antenna.
I f U U T s i m u l a t e s a l t i t u d e , sh i e l d U U T
Antenna being tested with Antenna
Shield. Refer to Appendix C. Either
shield with another Antenna Shield or
disconnect and terminate UUT
A n t e n n a ( s) n o t b e i n g t e st e d .
D e a ct i va t e o t h e r a r e a t r a n sp o n d e r s
or position transponders >50 ft
(15.24 m) from the Flat Antenna.
P o si t i o n F l a t A n t e n n a ≤ 2 0 f t ( 6 . 1 m )
f r o m U U T A n t e n n a b e i n g t e st e d .
** ATCRBS REPLY TEST **
RANGE: 12.8Ø nm
%REPLY: 1ØØ
ALTITUDE: 8,ØØØ ft
Press RUN to start
** ATCRBS REPLY TEST - RUNNING **
RANGE: 11.77 nm
%REPLY: 1ØØ
ALTITUDE: 8,172 ft
W-S SEQUENCE INTERVAL: 1.Ø1 sec
S a m p l e A T C R B S R e p l y T e st S cr e e n s
Figure 14
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TCAS- 201
STEP
4.
5.
PROCEDURE
P r e ss R P L Y T E S T K e y t o e n t e r A T C R B S
Reply Test screen. (The TCAS-201
d i sp l a ys i n f o r m a t i o n f r o m t h e l a s t M o d e
C reply transmitted.)
STEP
PROCEDURE
8.
Press RUN/STOP Key to terminate test
operation.
9.
P r e ss a n y ke y t o e xi t A T C R B S R e p l y T e st
screen.
Use SELECT Keys to select items and
S L E W K e ys t o c h a n g e v a l u e s . ( C u r s o r
line underneath indicates item selected.)
RANGE:
The RANGE: field is the same as in
S ce n a r i o T e s t . R e f e r t o p a r a 1 - 2 - 4 . 4 .
ALTITUDE:
Enter simulated altitude, in feet above
sea level, of the intruding aircraft (TCAS201). Single SLEW Key depressions
ch a n g e a l t i t u d e b y 1 0 0 f t a n d c o n t i n u o u s
d e p r e ssi o n c h a n g e s a l t i t u d e i n 1 0 0 0 f t
i n cr e m e n t s. M i n i m u m a l t i t u d e i s - 1 0 0 0 f t
a n d m a xi m u m a l t i t u d e i s 1 2 6 , 7 0 0 f t .
%REPLY:
Enter the desired ratio between the
number of replies transmitted by the
TCAS-201 and the number of valid
interrogations received.
6.
Press RUN/STOP Key to initiate ATCRBS
Reply Test.
W-S SEQUENCE INTERVAL:
The TCAS-201 displays time from the
start of one whisper-shout sequence to
the start of the next whisper-shout
sequence. The TCAS-201 looks for the
i n t e r va l b e t w e e n 0 . 5 3 s e c ( t i m e t o
d i sp l a y i n f o r m a t i o n ) a n d 1 . 2 7 s e c
(1.0 sec is nominal). If the interval is
> 1 . 2 7 se c, t h e b o t t o m l i n e i n d i c a t e s N O
WHISPER-SHOUT SEQUENCE was
r e ce i ve d .
7.
M o n i t o r T C A S f o r co r r e ct t h r e a t
i n d i ca t i o n s.
NOTE:
There are usually two to three
se c o f d e l a y ( t a r g e t a c q u i s i t i o n
time) between the start of
TCAS-201 operation and when
the UUT acquires the Test Set
as a target. When only one UUT
Antenna is being tested, the
target acquisition time
increases. Refer to Appendix E
for the target acquisition time
probabilities.
1-2-4
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O PERATIO N MANUAL
TCAS- 201
4.5.2
Mode S Operation
STEP
Refer to 1-2-4, Figure 15.
I n M o d e S R e p l y T e s t , t h e T C A S - 2 0 1 b e co m e s
a Mode S Reply (DF0, DF11 and DF16)
Generator or Transponder. Operating the
s a m e a s i n t h e A T C R B S R e p l y T e s t , t h e T e st
S e t h a s st a t i c o p e r a t i o n i f i n i t i a t e d f r o m t h e
Mode S Reply Test screen or dynamic
operation if initiated from the Scenario Test
scr e e n . T h e M o d e S R e p l y T e s t c a n b e u s e d
to evaluate the ability of the TCAS interrogator
to receive, decode and respond to Mode S
r e p l i e s. T h e m e s s a g e f i e l d s a l l o w t h e u s e r t o
program capability information and various
advisories to the TCAS interrogator.
STEP
3.
Connect UUT to TCAS-201 RF I/O
C o n n e ct o r o r T C A S - 2 0 1 F l a t A n t e n n a
(facing towards UUT Antenna) to
ANTENNA Connector.
2.
P e r f o r m t h e S e t u p P r o c e d u r e a cco r d i n g
to para 1-2-4.3. Set INTRUDER TYPE:
to MODE-S.
I f d i r e ct co n n e ct i o n i s n o t u se d , p e r f o r m
one of the following:
E i t h e r sh i e l d w i t h A n t e n n a S h i e l d
( r e f e r t o A p p e n d i x C ) o r d i sco n n e ct
and terminate UUT Antenna not being
t e st e d . D e a ct i va t e o t h e r a r e a
transponders or position
transponders at least three times the
S e t u p # 1 M e n u h o r i z o n t a l d i st a n ce
from Flat Antenna.
I f U U T s i m u l a t e s a l t i t u d e , sh i e l d U U T
Antenna being tested with Antenna
Shield. Refer to Appendix C. Either
shield with another Antenna Shield or
disconnect and terminate UUT
A n t e n n a ( s) n o t b e i n g t e st e d .
D e a ct i va t e o t h e r a r e a t r a n sp o n d e r s
or position transponders >50 ft
(15.24 m) from the Flat Antenna.
P o si t i o n F l a t A n t e n n a ≤ 2 0 f t ( 6 . 1 m )
f r o m U U T A n t e n n a b e i n g t e st e d .
PROCEDURE
1.
PROCEDURE
4.
P r e ss R P L Y T E S T K e y t o e n t e r M o d e S
R e p l y T e st scr e e n . ( T h e T C A S - 2 0 1
d i sp l a ys i n f o r m a t i o n f r o m t h e l a st M o d e S
r e p l y t r a n sm i t t e d . )
** MODE S REPLY TEST **
RANGE: 12.8Ø nm ALTITUDE: 8ØØØ ft
VS:Ø
SL:Ø RIa:8
RIt:3
CA:Ø
ARA:ØØØØ
RAC:Ø
CLI:Ø VDS:3Ø
AA:Ø1FF37
Press RUN to start
** MODE S REPLY TEST - RUNNING **
RANGE: 11.ØØ nm ALTITUDE: 83ØØ ft
VS:Ø
SL:Ø RIa:8
RIt:3
CA:Ø
ARA:ØØØØ
RAC:Ø
CLI:Ø VDS:3Ø
AA:Ø1FF37
SURVEILLANCE INTERVAL: 1.ØØ sec
S a m p l e M o d e S R e p l y T e st S cr e e n s
Figure 15
1-2-4
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O PERATIO N MANUAL
TCAS- 201
STEP
PROCEDURE
5.
Use SELECT Keys to select items and
S L E W K e ys t o c h a n g e v a l u e s . ( C u r s o r
line underneath indicates item selected.)
NOTE:
All Mode S reply information is
programmed by the operator and
is used in the Mode S replies
transmitted by the TCAS-201 in
S c e n a r i o T e s t a n d / o r R e p l y T e st
functions.
STEP
PROCEDURE
SL:
E n t e r si m u l a t e d T C A S - 2 0 1 S e n si t i vi t y
L e ve l ( r e f e r t o 1 - 2 - 4 , T a b l e 4 ) . ( T h e
T C A S - 2 0 1 t r a n sm i t s t h e S L : f i e l d i n D F 0
and DF16.)
NOTE:
RANGE:
The RANGE: field is the same as in
S ce n a r i o T e s t . R e f e r t o p a r a 1 - 2 - 4 . 4 .
The SL: field contains simulated
sensitivity level information and
d o e s n o t a ct u a l l y se t t h e T C A S 201 to a particular Sensitivity
Level.
INPUT
DATA
DEFINITION
ALTITUDE:
0
No Sensitivity Level reported
Enter simulated altitude, in feet above
sea level, of the intruding aircraft (TCAS201). Single SLEW Key depressions
ch a n g e a l t i t u d e b y 2 5 f t u p t o 5 0 , 2 0 0 f t
and by 100 ft for altitudes ≥50,200 ft.
Continuous depression changes altitude
in 1000 ft increments. Minimum altitude
is -1000 ft and maximum altitude is
126,700 ft.
1
Operates at Sensitivity Level 1
2
Operates at Sensitivity Level 2
3
Operates at Sensitivity Level 3
4
Operates at Sensitivity Level 4
5
Operates at Sensitivity Level 5
6
Operates at Sensitivity Level 6
7
Operates at Sensitivity Level 7
NOTE:
Refer to Appendix B for detailed
descriptions of the following
displayed Downlink Format (DF)
fields and subfields. All fields
a r e d i sp l a ye d i n h e xa d e ci m a l .
Unless otherwise specified, both
si n g l e a n d c o n t i n u o u s S L E W
Key depressions change values
by 1.
VS:
Enter Vertical Status. Enter 0 into VS:
field to indicate intruding aircraft (TCAS201) is airborne or 1 to indicate intruding
aircraft is on the ground. (The TCAS-201
transmits the VS: field in DF0 and DF16.)
SL: Field Valid Data
Table 4
RIa:
Enter air-to-air Reply Information for an
a cq u i si t i o n r e p o r t . S e t R I a : f i e l d ,
containing airspeed data, from 8 to E
a cco r d i n g t o 1 - 2 - 4 , T a b l e 5 . ( T h e T C A S 201 transmits the RIa: field in DF0 and
DF16 when interrogator requests an
a cq u i si t i o n r e p o r t . )
RIa: FIELD
INPUT DATA
DEFINITION
(AIRSPEED)
8
No data available
9
≤75 kts
A
>75 kts and ≤150 kts
B
>150 kts and ≤300 kts
C
>300 kts and ≤600 kts
D
>600 kts and ≤1200 kts
E
>1200 kts
R I : F i e l d ( A cq u i si t i o n ) V a l i d D a t a
Table 5
1-2-4
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O PERATIO N MANUAL
TCAS- 201
STEP
PROCEDURE
STEP
PROCEDURE
RIt:
ARA:
Enter air-to-air Reply Information for a
t r a c k i n g r e p o r t . S e t R I t : f i e l d , co n t a i n i n g
TCAS capability data, to 0, 3 or 4
according to 1-2-4, Table 6. (The TCAS201 transmits the RIt: field in DF0 and
D F 1 6 w h e n i n t e r r o g a t o r r e q u e st s a
t r a ck i n g r e p o r t . )
E n t e r si m u l a t e d T C A S r e so l u t i o n
a d vi so r y r e p o r t . R e f e r t o 1 - 2 - 4 , T a b l e 8
t o se t A R A : f i e l d , i n d i ca t i n g a l l cu r r e n t
A ct i ve R e so l u t i o n A d vi so r i e s b e i n g
t r a n sm i t t e d b y t h e i n t r u d i n g a i r cr a f t
(TCAS-201). The ARA: field for the
T C A S - 2 0 1 co n si st s o f t w o t w o - d i g i t
se ct i o n s. S e t f i r st se ct i o n ( l e f t ) f r o m 0 0
t o 3 F . S e t se co n d se ct i o n ( r i g h t ) f r o m 0 0
t o F F . S i n g l e S L E W K e y d e p r e ssi o n s
change value by 1 and continuous
depression changes value by 10h. (The
T C A S - 2 0 1 t r a n sm i t s t h e A R A : f i e l d i n
DF16 [part of MV field].)
RIt: FIELD
INPUT DATA
DEFINITION
(TCAS CAPABILITY)
0
No on-board TCAS
3
On-board TCAS has
vertical-only resolution
ability.
4
On-board TCAS has
vertical and horizontal
resolution ability.
RI: Field (Tracking) Valid Data
Table 6
INPUT
DATA
DEFINITION
0001
Don’t turn right.
0002
Don’t turn left.
0004
Turn right.
CA:
0008
Turn left.
Enter transponder Capability (refer to
1-2-4, Table 5). (The TCAS-201
t r a n s m i t s t h e C A : f i e l d i n D F 1 1 [ sq u i t t e r
transmissions].)
0010
Don’t climb faster than
2000 fpm.
0020
Don’t climb faster than
1000 fpm.
0040
Don’t climb faster than
500 fpm.
0080
Don’t climb.
INPUT
DATA
0
DEFINITION
No communications capability
(surveillance only)
0100
Descend.
Don’t descend faster than
2000 fpm.
1
Comm-A and Comm-B
capability
0200
2
Comm-A, Comm-B and CommC capability
0400
Don’t descend faster than
1000 fpm.
3
Comm-A, Comm-B, Comm-C
and Comm-D capability
0800
Don’t descend faster than
500 fpm.
1000
Don’t descend.
2000
Climb.
CA: Field Valid Data
Table 7
NOTE: Data codes are added together
t o i n d i c a t e m u l t i p l e a c t i ve
resolution advisories are being
t r a n sm i t t e d .
ARA: Field Valid Data
Table 8
1-2-4
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O PERATIO N MANUAL
TCAS- 201
STEP
PROCEDURE
STEP
RAC:
NOTE:
Enter simulated TCAS Resolution
A d vi so r y C o m p l e m e n t s . R e f e r t o 1 - 2 - 4 ,
Table 9 to set the RAC: field indicating
current active Resolution Advisory
Complements, if any, being received from
all other TCAS aircraft with on-board
resolution capability. (The TCAS-201
transmits the RAC: field in DF16 [part of
MV field].)
INPUT
DATA
PROCEDURE
6.
No resolution advisory
complements
1
Don’t turn right.
2
Don’t turn left.
4
Don’t climb.
8
Don’t descend.
T h e T C A S - 2 0 1 d i sp l a ys t i m e f r o m t h e
st a r t o f o n e i n t e r r o g a t i o n t o t h e st a r t o f
t h e n e xt i n t e r r o g a t i o n . T h e T C A S - 2 0 1
looks for the interval between 0.53 sec
(time to display information) and
1.27 sec (1.0 sec is nominal). If the
interval is >1.27 sec, the bottom line
i n d i ca t e s N O S U R V E I L L A N C E . I f
interrogation level is too low to be
decoded, SURVEILLANCE SIGNAL LOW
is displayed in the bottom line. If
interrogation level is too high to be
d e co d e d , S U R V E I L L A N C E S I G N A L
SATURATED is displayed in the bottom
line. If interrogation data is not found
(no SPR), SURVEILLANCE SPR NOT
FOUND is displayed in the bottom line.
NOTE: The sum of the Input Data
codes indicates multiple active
resolution advisories are being
r e ce i v e d .
RAC: Field Valid Data
Table 9
CLI:
7.
Enter Coordination Lock Indicator, 0 for
Off or 1 for On. (The TCAS-201
transmits the CLI: field in DF16 [part of
MV field].)
AA:
Enter TCAS-201 Aircraft Address. The
TCAS-201 AA: field contains three twod i g i t se ct i o n s . S e t e a c h s e c t i o n f r o m 0 0
to FF. Single SLEW Key depressions
c h a n g e v a l u e b y 1 a n d co n t i n u o u s
depression changes value in 10h
increments. (The TCAS-201 transmits
the AA: field in DF11 [squitter
transmissions].)
M o n i t o r T C A S f o r co r r e ct t h r e a t
indications.
NOTE:
VDS:
Enter MV message field content
d e f i n i t i o n . S i n g l e S L E W K e y d e p r e s si o n s
c h a n g e v a l u e b y 1 a n d co n t i n u o u s
depression changes value in 10h
increments. Set the VDS: field to 30 for
co o r d i n a t i o n r e p l y m e s s a g e s ( d e f a u l t
value). (The TCAS-201 transmits the
VDS: field in DF16 [part of MV field].)
Press RUN/STOP Key to initiate
M o d e S R e p l y T e st .
SURVEILLANCE INTERVAL:
DEFINITION
0
T h e a d d r e ss e n t e r e d i n t h e A A :
field combined with the
computed parity of DF0 and
DF16 forms the AP fields
transmitted in both DF0 and
DF16.
There are usually two to three
sec of delay (target acquisition
t i m e ) b e t w e e n t h e st a r t o f
TCAS-201 operation and when
t h e U U T a cq u i r e s t h e T e st S e t
as a target. When only one UUT
Antenna is being tested, the
target acquisition time
i n cr e a se s. R e f e r t o A p p e n d i x E
f o r t h e t a r g e t a cq u i si t i o n t i m e
probabilities.
8.
Press RUN/STOP Key to terminate test
operation.
9.
P r e ss a n y ke y t o e xi t M o d e S R e p l y T e st
screen.
1-2-4
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O PERATIO N MANUAL
TCAS- 201
4.6 MONITOR
4.6.1
ATCRBS Operation
Refer to 1-2-4, Figure 16.
STEP
W h e n i n A T C R B S m o d e , t h e T C A S - 2 0 1 T e st
S e t m o n i t o r s t h e W h i s p e r - S h o u t s e q u e n ce .
The Whisper-Shout Monitor screen provides
i n f o r m a t i o n u s e d t o v e r i f y w h i s p e r - s h o u t st e p s
and Side Lobe Suppression (SLS). By
co n d u ct i n g s e v e r a l t e s t s f r o m d i f f e r e n t p o i n t s
around the aircraft (refer to para 1-2-4.8), the
capabilities of the TCAS interrogator
co n ce r n i n g c o v e r a g e ( d i r e c t i o n a l a n d / o r o m n i d i r e ct i o n a l ) , w h i s p e r - s h o u t s e q u e n c e o p e r a t i o n
and interrogation timing are effectively
e va l u a t e d .
PROCEDURE
1.
C o n n e ct U U T t o T C A S - 2 0 1 R F I / O
C o n n e ct o r o r T C A S - 2 0 1 F l a t A n t e n n a
( f a ci n g t o w a r d s U U T A n t e n n a ) t o
A N T E N N A C o n n e ct o r .
2.
P e r f o r m t h e S e t u p P r o ce d u r e a cco r d i n g
to para 1-2-4.3. Set INTRUDER TYPE:
to ATCRBS.
3.
I f U U T s i m u l a t e s a l t i t u d e a n d d i r e ct
connection is not used, shield UUT
Antenna being tested with Antenna
S h i e l d . R e f e r t o A p p e n d i x C . P o si t i o n
Flat Antenna ≤20 ft (6.1 m) from UUT
Antenna being tested.
** WHISPER-SHOUT MONITOR **
RANGE: 12.8Ø nm
ALT: 1Ø,ØØØ ft
ATTEN: Ø.Ø dB
NO SUPP:
S1:
P2:
BOTH:
SPACING:
NO WHISPER-SHOUT SEQUENCE
** WHISPER-SHOUT MONITOR - RUNNING **
- MONITOR ONLY ATTEN: Ø.Ø dB
NO SUPP: 1
S1: Ø
P2: Ø
BOTH: Ø
SPACING: 4.3 ms
W-S SEQUENCE INTERVAL: 1.Ø1 sec
S a m p l e A T C R B S M o n i t o r S cr e e n s
Figure 16
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O PERATIO N MANUAL
TCAS- 201
STEP
PROCEDURE
STEP
4.
P r e ss M O N K e y t o e n t e r W h i s p e r - S h o u t
M o n i t o r s c r e e n . ( T h e T C A S - 2 0 1 d i s p l a ys
information from the last received or
r e ca l l e d w h i sp e r - sh o u t se q u e n ce . T h e
l a t e st se q u e n c e i s d i s p l a y e d i f T C A S - 2 0 1
is already in the running mode.)
6.
5.
PROCEDURE
Press RUN/STOP Key to initiate Monitor
m o d e . ( T h e T C A S - 2 0 1 d i sp l a ys l a t e st
w h i sp e r - sh o u t se q u e n ce i n f o r m a t i o n . )
Use SELECT Keys to select items and
S L E W K e ys t o c h a n g e v a l u e s . ( C u r s o r
line underneath indicates item selected.)
The top line indicates running Monitor by
displaying: ** WHISPER-SHOUT
MONITOR - RUNNING **. The second
line indicates operation initiated from the
A T C R B S M o n i t o r scr e e n b y d i sp l a yi n g :
- MONITOR ONLY-.
RANGE:
NO SUPP:
The RANGE: field is the same as in
S ce n a r i o T e s t . R e f e r t o p a r a 1 - 2 - 4 . 4 .
T h e T C A S - 2 0 1 d i sp l a ys t h e n u m b e r o f
processed interrogations, received in
latest sequence, without detected S1
( w h i sp e r - sh o u t su p p r e ssi o n ) a n d P 2
( S L S ) p u l se s. T h e se i n t e r r o g a t i o n s
solicit replies.
ALT:
The ALT: field is the same as the
A L T I T U D E : f i e l d i n A T C R B S R e p l y T e st .
Refer to para 1-2-4.5.1.
NOTE:
Range and altitude are only
shown when test operation is
initiated from Scenario Test or
Reply Test screens. When test
operation is initiated from any
Monitor screen, the TCAS-201
Test Set does not generate
replies. Range and altitude, not
being applicable, are not shown.
When it does apply, range and
a l t i t u d e e st a b l i s h e d i n a n y
screen is the same for the entire
TCAS-201 Test Set and may be
a d j u s t e d f r o m t h e S c e n a r i o T e st ,
R e p l y T e s t o r M o n i t o r s c r e e n s.
NOTE:
S1:
T h e T C A S - 2 0 1 d i sp l a ys t h e n u m b e r o f
processed interrogations, received in
latest sequence, containing a detected
S1 pulse, but without a detected P2
pulse.
NOTE:
ATTEN:
Set attenuation of incoming signals (UUT
interrogations). (The same attenuation is
set for outgoing signals [TCAS-201
replies] when Scenario Test or Reply
T e st f u n ct i o n s h a v e b e e n i n i t i a t e d . T h e
TCAS-201 sets a default value internally
b a se d u p o n t h e U U T d i s t a n c e i n f o r m a t i o n
entered in Setup #1 Menu.)
NOTE:
Attenuation may be changed
using the Whisper-Shout Monitor
scr e e n , b u t t h e d e f a u l t v a l u e i s
restored upon exit from the
scr e e n .
I f a S ce n a r i o o r R e p l y T e st h a s
b e e n a ct i va t e d , t h e T C A S - 2 0 1
sends the number of replies
i n d i ca t e d i n t h e N O S U P P : f i e l d .
S1: field added with NO SUPP:
field provides the number of
whisper-shout steps received in
latest sequence from the UUT
Antenna directed towards the
T e st S e t .
P2:
T h e T C A S - 2 0 1 d i sp l a ys t h e n u m b e r o f
interrogations, received in latest
sequence, containing a detected P2
pulse, but without a detected S1 pulse.
T h i s i n f o r m a t i o n ca n b e u se d t o ve r i f y
co r r e ct S L S o p e r a t i o n w h e n t h e T C A S 201 is positioned between the directional
antenna lobes. The P2: field indicates
interrogations not directed towards the
T e st S e t .
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O PERATIO N MANUAL
TCAS- 201
STEP
PROCEDURE
BOTH:
The TCAS-201 displays the number of
processed interrogations, received in
latest sequence, containing both
detected S1 and P2 pulses. The BOTH:
field added to the P2: field indicates the
number of total interrogations not
d i r e ct e d t o w a r d s t h e T e s t S e t ( f r o m t h e
other UUT Antennas).
SPACING:
The TCAS-201 displays the minimum
time spacing, in ms, between any two
su cc e s s i v e i n t e r r o g a t i o n s r e c e i v e d i n
latest sequence.
W-S SEQUENCE INTERVAL:
The W-S SEQUENCE INTERVAL: field is
t h e s a m e a s i n A T C R B S R e p l y T e st .
Refer to para 1-2-4.5.1.
7.
Press RUN/STOP Key to terminate test
operation.
8.
Press any key to exit Whisper-Shout
Monitor screen.
1-2-4
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Ju n 1 / 9 7
O PERATIO N MANUAL
TCAS- 201
4.6.2
Mode S Operation
Refer to 1-2-4, Figure 17.
When in Mode S, the TCAS-201 Test Set
monitors for Uplink Formats (UF) 0 or 16.
Mode S monitoring consists of two different
Monitor screens. The primary screen,
S u r ve i l l a n ce M o n i t o r , i s a g e n e r a l m o n i t o r i n g
scr e e n d i sp l a yi n g t h e c o n t e n t s o f t h e m a j o r
interrogation fields incorporated in UF0 and
UF16. Information is displayed in hexadecimal
and can be used to verify interrogator bit
a c c u r a c y . T h e s e c o n d a r y s c r e e n , B r o a d c a st
Monitor, verifies the TCAS Broadcast is
t r a n sm i t t e d i n U F 1 6 a p p r o x i m a t e l y e v e r y t e n
se c. T h e T e st S e t d e t e c t s a T C A S B r o a d c a st
when the AA address field decoded from the
A P f i e l d i n U F 1 6 h a s a l l o n e s.
UF:
RL:
CVC:
MID:
STEP
PROCEDURE
1.
C o n n e ct U U T t o T C A S - 2 0 1 R F I / O
C o n n e ct o r o r T C A S - 2 0 1 F l a t A n t e n n a
( f a ci n g t o w a r d s U U T A n t e n n a ) t o A n t e n n a
C o n n e ct o r .
2.
P e r f o r m t h e S e t u p P r o ce d u r e a cco r d i n g
to para 1-2-4.3. Set INTRUDER TYPE:
to MODE-S.
3.
If UUT simulates altitude and direct
connection is not used, shield UUT
Antenna being tested with Antenna
S h i e l d . R e f e r t o A p p e n d i x C . P o si t i o n
Flat Antenna ≤20 ft (6.1 m) from UUT
Antenna being tested.
4.
P r e ss M O N K e y t o e n t e r S u r ve i l l a n ce
M o n i t o r scr e e n . ( T h e T C A S - 2 0 1 d i sp l a ys
information from the last received or
r e ca l l e d M o d e S i n t e r r o g a t i o n . )
5.
U se S E L E C T K e ys t o se l e ct i t e m s a n d
S L E W K e ys t o ch a n g e va l u e s. ( C u r so r
line underneath indicates item selected.)
** SURVEILLANCE MONITOR **
RANGE: 12.8Ø nm ALT: 8ØØØ ft
AQ:
UDS:
LCK:
MTB:
VRC:
CHC:
HRC:
ESB:
Press RUN to start
** BROADCAST MONITOR **
UF:
RANGE: 12.8Ø nm ALT: 8ØØØ ft
RL:
AQ:
UDS:
MID:
INTERVAL:
COUNT: Ø
Press RUN to start
** BROADCAST MONITOR - RUNNING **
UF:
- MONITOR ONLY RL:
AQ:
UDS:
MID:
INTERVAL:
COUNT: Ø
** LOW BATTERY **
SURVEILLANCE INTERVAL: 1.ØØ sec
S a m p l e M o d e S M o n i t o r S cr e e n s
Figure 17
1-2-4
Page 22
Jun 1/97
O PERATIO N MANUAL
TCAS- 201
STEP
PROCEDURE
PROCEDURE
RANGE:
LCK:
The RANGE: field is the same as in
S ce n a r i o T e s t . R e f e r t o p a r a 1 - 2 - 4 . 4 .
I f s e t t o 1 , t h e L o c k f i e l d i n d i ca t e s
r e q u e st f o r t h e t r a n sp o n d e r ( T C A S - 2 0 1 )
t o se n d i n f o r m a t i o n f o r T C A S R e so l u t i o n
A d vi so r y ( t r a n sp o n d e r i s a co l l i si o n
t h r e a t t o t h e i n t e r r o g a t o r ) a n d i s r e ce i ve d
in UF16 (part of MU field).
ALT:
The ALT: field is the same as the
A L T I T U D E : f i e l d i n M o d e S R e p l y T e st .
Refer to para 1-2-4.5.2.
NOTE:
6.
STEP
Range and altitude operation
function the same as in ATCRBS
Monitor operation. Refer to
para 1-2-4.6.1.
Press RUN/STOP Key to initiate Monitor
m o d e . ( T h e T C A S - 2 0 1 d i s p l a ys
i n f o r m a t i o n f o r t h e l a t e s t r e c e i ve d
interrogation.)
The top line indicates running Monitor by
displaying: ** SURVEILLANCE
MONITOR - RUNNING **. The second
line indicates operation initiated from the
Mode S Monitor screen by displaying:
- MONITOR ONLY-.
Refer to Appendix B for detailed
d e s cr i p t i o n o f t h e f o l l o w i n g d i sp l a y e d
Uplink Format fields and subfields.
MTB:
I f se t t o 1 , t h e M u l t i p l e T h r e a t B i t ,
r e ce i ve d i n U F 1 6 ( p a r t o f M U f i e l d ) ,
i n d i c a t e s t h e i n t e r r o g a t o r i s r e ce i vi n g
more than one collision threat.
CVC:
R e f e r t o 1 - 2 - 4 , T a b l e 1 0 f o r t h e C a n ce l
V e r t i ca l R e s o l u t i o n A d v i s o r y
Complement, received in UF16 (part of
MU field).
CVC: FIELD
DEFINITION
0
No cancellation
1
Cancel, don’t descend.
2
Cancel, don’t climb.
CVC: Field Display Data
Table 10
UF:
VRC:
Uplink Format number, as received in the
M o d e S i n t e r r o g a t i o n , i s d i sp l a ye d i n
decimal form.
R e f e r t o 1 - 2 - 4 , T a b l e 1 1 f o r t h e V e r t i ca l
Resolution Advisory Complement,
r e ce i ve d i n U F 1 6 ( p a r t o f M U f i e l d ) .
RL:
Reply Length field, sent in UF0 and
U F 1 6 , i n d i c a t e s r e q u e s t f o r t r a n sp o n d e r
( T C A S - 2 0 1 ) t o r e p l y w i t h D F 0 i f se t t o 0
or DF16 if set to 1.
VRC: FIELD
0
No complement sent
1
Don’t descend.
2
Don’t climb.
VRC: Field Display Data
Table 11
AQ:
A cq u i s i t i o n f i e l d , s e n t i n U F 0 a n d U F 1 6 ,
indicates request for transponder (TCAS2 0 1 ) t o r e p l y w i t h c a p a b i l i t y ( t r a cki n g )
r e p o r t i f s e t t o 0 o r a i r s p e e d ( a cq u i si t i o n )
report if set to 1.
UDS:
The UDS: field, sent in UF16 (part of MU
field), defines the content of the MU
m e ss a g e f i e l d . T h e U D S : f i e l d i n d i c a t e s
TCAS Resolution Advisories Lock
Requests or Resolution Messages if set
t o 3 0 o r T C A S B r o a d c a s t M e s sa g e s i f se t
to 32.
DEFINITION
CHC:
R e f e r t o 1 - 2 - 4 , T a b l e 1 2 f o r t h e C a n ce l
H o r i zo n t a l R e so l u t i o n A d vi so r y
Complement, received in UF16 (part of
MU field).
CHC: FIELD
0
DEFINITION
No cancellation
1
Cancel, don’t turn left.
2
Cancel, don’t turn right.
CHC: Field Display Data
Table 12
1-2-4
Page 23
Ju n 1 / 9 7
O PERATIO N MANUAL
TCAS- 201
STEP
STEP
PROCEDURE
PROCEDURE
HRC:
MID:
Refer to 1-2-4, Table 13 for the
Horizontal Resolution Advisory
Complement, received in UF16 (part of
MU field).
The MID: field, received in UF16 (part of
M U f i e l d ) , d i sp l a ys t h e d i scr e t e M o d e S
a d d r e ss o f t h e T C A S i n t e r r o g a t o r .
HRC: FIELD
SURVEILLANCE INTERVAL:
DEFINITION
0
No complement sent
1
Intruder TCAS sense is
turn left/Don’t turn left.
2
Intruder TCAS sense is
turn left/Don’t turn right.
5
Intruder TCAS sense is
turn right/Don’t turn left.
6
Intruder TCAS sense is
turn right/Don’t turn right.
The SURVEILLANCE INTERVAL: field is
t h e sa m e a s i n M o d e S R e p l y T e st .
Refer to para 1-2-4.5.2.
7.
P r e ss M O N K e y t o e n t e r B r o a d ca st
M o n i t o r . ( T h e T C A S - 2 0 1 d i sp l a ys
i n f o r m a t i o n f r o m l a st r e ce i ve d T C A S
Broadcast. Unless specified, the
information and editing fields are the
same as in the Surveillance Monitor
scr e e n . )
The top line indicates running Monitor by
displaying: ** BROADCAST MONITOR RUNNING **. The second line indicates
operation initiated from the Mode S
Monitor screen by displaying:
- MONITOR ONLY-.
HRC: Field Display Data
Table 13
ESB:
Refer to 1-2-4, Table 14 for the
Encoded/Vertical Sense Bits, received in
UF16 (now VSB, part of MU field) to
v e r i f y V e r t i ca l R e s o l u t i o n A d v i s o r y
Complements.
INTERVAL:
T h e I N T E R V A L : f i e l d d i sp l a ys t h e t i m e
interval, in sec, between the latest two
T C A S B r o a d ca st M e ssa g e s r e ce i ve d
( n o m i n a l l y t e n se c f o r e a ch i n t e r r o g a t o r ) .
VALID
CVC: FIELD VRC: FIELD ESB: FIELD
0
0
0
0
1
E
0
2
7
0
3
9
1
0
B
1
1
5
1
2
C
1
3
2
2
0
D
2
1
3
2
2
A
2
3
4
3
0
6
3
1
8
3
2
1
3
3
F
NOTE:
T C A S B r o a d ca st M e ssa g e s a r e
jittered ±0.2 sec off the nominal
t e n se c i n t e r va l t i m e . T h e T C A S
Broadcast Message may also be
staggered between the
directional antennas causing
sh o r t e r i n t e r va l s, i f d e t e ct e d .
COUNT:
The COUNT: field displays the number of
T C A S B r o a d ca st M e ssa g e s r e ce i ve d
during the test operation.
8.
Press RUN/STOP Key to terminate test
operation.
9.
P r e ss a n y ke y t o e xi t M o n i t o r scr e e n .
ESB: Field Display Data
Table 14
1-2-4
Page 24
Jun 1/97
O PERATIO N MANUAL
TCAS- 201
4.7 POWER & FREQUENCY
Unless otherwise specified, refer to 1-2-4,
Figure 18.
T h e T e s t S e t a c c u r a t e l y m e a s u r e s E f f e ct i ve
Radiated Power (ERP) and transmitting
frequency of the TCAS interrogator. The
TCAS-201 uses Mode S squitters to obtain the
power and frequency readings. The TCAS-201
t r a n s m i t s s q u i t t e r s s t a r t i n g w i t h t h e a d d r e ss
l o a d e d i n t h e A A : f i e l d ( M o d e S R e p l y T e st
scr e e n ) a n d u s e s u p t o 5 1 2 d i f f e r e n t
addresses. Readings are figured from
d e t e ct e d i n t e r r o g a t i o n s r e c e i v e d f r o m t h e
sq u i t t e r s.
STEP
1.
6.
3.
Press PWR TEST Key to enter Power &
Frequency screen. (The TCAS-201
d i s p l a y s i n f o r m a t i o n f r o m t h e l a st P o w e r
& Frequency test operation.)
4.
Face Flat Antenna towards UUT Antenna.
If direct connection is used, terminate
ANTENNA Connector with 50 Ω load
(connector cover).
Press RUN/STOP Key or ANTENNA
PUSH BUTTON Switch to initiate Power
& F r e q u e n c y f u n c t i o n . I f d i r e ct
co n n e c t i o n i s u s e d , g o t o S t e p 7 .
T h e T C A S - 2 0 1 d i sp l a ys a ccu r a t e
power and frequency readings when
F l a t A n t e n n a f a ce s U U T A n t e n n a a t
t h e S e t u p P r o c e d u r e d i s t a n ce a n d
a cco r d i n g t o 1 - 2 - 4 , F i g u r e 1 9 . F o r
m o r e a ccu r a cy, p e r f o r m S t e p 6 t o
f u r t h e r r e d u ce m u l t i p a t h e r r o r s o n t h e
ramp.
S t a r t i n g f r o m g r o u n d l e ve l , m o ve F l a t
A n t e n n a u p w a r d 6 f t ( 1 . 8 m ) a t < 1 f t / se c
( 0 . 3 m / se c) .
D o n o t m o ve t o w a r d s o r a w a y f r o m
UUT or the Setup #1 UUT DIST:
HORIZ= becomes inconsistent.
Connect UUT to TCAS-201 RF I/O
C o n n e ct o r o r T C A S - 2 0 1 F l a t A n t e n n a t o
Antenna Connector.
P e r f o r m t h e S e t u p P r o c e d u r e a cco r d i n g
to para 1-2-4.3.
PROCEDURE
NOTE:
PROCEDURE
2.
5.
STEP
Do not rotate Flat Antenna or power
levels are reduced.
M o v e F l a t A n t e n n a b e l o w a n d a b o ve
t h e m e d i a n h e i g h t t h e s a m e d i st a n ce
f o r t h e sa m e a m o u n t o f t i m e t o o b t a i n
a n a ccu r a t e p o w e r a ve r a g e . ( M e d i a n
height is Flat Antenna height from the
ground, required to obtain Setup #1
UUT DIST: VERT= height between
t h e F l a t a n d U U T A n t e n n a s. )
7.
After ≥30 sec, press RUN/STOP KEY or
A N T E N N A P U S H B U T T O N S w i t ch t o
t e r m i n a t e t e st o p e r a t i o n .
8.
P r e ss a n y ke y t o e xi t P o w e r & F r e q u e n cy
screen.
** POWER & FREQUENCY **
ERP
FREQ
CURRENT: 49.4 dBm
1Ø3Ø.ØØØ MHz
AVERAGE: 5Ø.2 dBm
1Ø3Ø.ØØØ MHz
INTERRS: 1
Press RUN to start
** POWER & FREQUENCY - RUNNING **
ERP
FREQ
CURRENT: 49.4 dBm
1Ø3Ø.ØØØ MHz
AVERAGE:
dBm
MHz
INTERRS: 1
W-S SEQUENCE INTERVAL: 1.ØØ sec
S a m p l e P o w e r & F r e q u e n cy S cr e e n s
Figure 18
1-2-4
Page 25
Ju n 1 / 9 7
FLAT ANTENNA
≈
ANTENNA
TEST SET
X
IPATH
MULT
± 40 VERTICAL
AND HORIZONTAL
ANTENNA
PATTERN
BEAMWIDTH
FOR OPTIMUM PERFORMANCE:
BUILDINGS, VEHICLES AND OTHER
AIRCRAFT SHOULD BE LOCATED AT
RIGHT ANGLES TO OR BEHIND ANTENNA.
BUILDING
9’ CABLE TO
TEST SET
BNC CONNECTOR
HANDLE
PUSH BUTTON
SWITCH
8518002
FOR ACCEPTABLE PERFORMANCE:
OTHER AIRCRAFT SHOULD BE >3X
DISTANCE FROM TEST SET. BUILDINGS
SHOULD BE AT OBLIQUE ANGLES
OCCUPYING < 20 OF BEAMWIDTH.
AIRCRAFT
WITH UUT
U
M
H
AT
IP
T
L
BUILDING
O PERATIO N MANUAL
TCAS- 201
S u g g e s t e d L a y o u t t o R e d u ce M u l t i p a t h E r r o r s
Figure 19
1-2-4
Page 26
Jun 1/97
O PERATIO N MANUAL
TCAS- 201
4.8 RECOMMENDED TEST PROCEDURE
60° Y
45° Z
30° Y
90°
X
Y 120°
Z 135°
Y 150°
FORWARD
0° X
SECTOR
NOTE:
X, Y AND Z REPRESENT
TEST LOCATIONS.
(NUMBER)° IS BEARING.
X 180°
330° Y
315° Z
300° Y
X
270°
Y 210°
Z 225°
Y 240°
8518014
Recommended Test Locations
Figure 20
STEP
1.
2.
3.
PROCEDURE
STEP
PROCEDURE
INITIAL SETUP
7.
P o si t i o n T e s t S e t a t F o r w a r d S e ct o r T e st
Location, according to 1-2-4, Figure 20,
≤50 ft (15.24 m) from and in line of sight
with TCAS top antenna.
F o r a n e xa ct si m u l a t e d e n co u n t e r , se t
UUT for a simulated altitude equal to the
altitude of the TCAS-201 at minimum
range.
8.
Press RUN/STOP Key to initiate test
operation.
Press SET /CONT Key to enter Setup #1
Menu screen.
Select RECALL: field and slew to 0
(default scenario) or desired Mode S
Scenario Test number.
NOTE:
9.
ANTENNA PUSH BUTTON
S w i t ch ca n b e u se d f o r
RUN/STOP Key.
V e r i f y U U T vi su a l a n d a u r a l o p e r a t i o n :
4.
P r e s s R U N / S T O P K e y t o i n i t i a t e st o r a g e
r e ca l l a c t i o n .
V e r i f y T r a f f i c A d vi so r y a t 4 0 se c u n t i l
e n co u n t e r t i m e .
5.
U s e S E L E C T K e y s a n d S L E W K e ys t o
enter position, UUT Antenna and Test
Set Flat Antenna information.
Verify Resolution Advisory at 25 sec
until encounter time.
TCAS ADVISORY OPERATION AND
BEARING ACCURACY
6.
Verify TCAS bearing reads 0° (±15°).
10. Press RUN/STOP Key to terminate test
operation.
Press SCEN Key to enter SCENARIO
Test screen. See 1-2-4, Figure 21.
INTRUDER
RANGE:
ALT:
STATUS:
** SCENARIO TEST **
TYPE: MODE-S
TIME:1:ØØ;Ø:ØØ
1Ø.ØØ nm
RATE:+6ØØ kt
1ØØØØ ft
RATE:+5ØØ fpm
NO THREAT
Press RUN to start
D e f a u l t S ce n a r i o T e st S cr e e n
Figure 21
1-2-4
Page 27
Ju n 1 / 9 7
O PERATIO N MANUAL
TCAS- 201
STEP
PROCEDURE
TCAS BROADCAST OPERATION
STEP
PROCEDURE
TCAS BEARING ACCURACY
1 1 . P r e ss M O N K e y t w i c e t o e n t e r T C A S
Broadcast Monitor screen.
2 6 . P r e ss R P L Y T E S T K e y t o e n t e r A T C R B S
Reply Test screen.
12. Press RUN/STOP Key to initiate test
operation.
27. Press RUN/STOP Key to initiate test
operation.
13. Verify TCAS Broadcast Interval,
I N T E R V A L : i s 1 0 se c ( ± 0 . 2 s e c ) a n d M I D :
field contains correct UUT address.
2 8 . V e r i f y T C A S b e a r i n g i s co r r e ct ( ± 1 5 ° ) .
14. Press RUN/STOP Key to terminate test
operation.
TCAS OPERATES AT EVERY STEP IN
W-S SEQUENCE.
1 5 . P r e ss S E T / C O N T K e y t o e n t e r S e t u p # 1
Menu screen.
29. Press RUN/STOP Key to terminate test
operation.
30. Reposition Test Set to a "Z" Test
Location shown in 1-2-4, Figure 20. Stay
at same distance from UUT as
established in Steps 1 through 5.
SLS PATTERN AT CROSSOVER
16. Set INTRUDER TYPE: field to ATCRBS.
3 1 . P r e ss M O N K e y t o e n t e r A T C R B S M o n i t o r
screen.
17. Press MON Key to enter ATCRBS Monitor
scr e e n .
32. Press RUN/STOP Key to initiate test
operation.
18. Press RUN/STOP Key to initiate test
operation.
33. Verify NO SUPP: field is ≥2.
19. Starting at 0.0, slew ATTEN: field up in
1.0 dB steps, verifying NO SUPP: field is
≥ 1 a t e a ch s t e p . C o n t i n u e u n t i l S 1 : f i e l d
is 0.
20. Press RUN/STOP Key to terminate test
operation.
UUT POWER (ERP) AND FREQUENCY
2 1 . P r e ss P W R T E S T K e y t o e n t e r P o w e r &
F r e q u e n cy s c r e e n .
22. Press RUN/STOP Key to initiate test
operation. Run test for >30 sec.
23. Verify power (ERP) = 49.0 dBm (±2 dBm)
and frequency (FREQ) = 1030 MHz
( ± 0 . 0 1 M H z) .
24. Press RUN/STOP Key to terminate test
operation.
2 5 . R e p o si t i o n T e s t S e t T o a " Y " T e s t
Location shown in 1-2-4, Figure 20. Stay
at same distance from UUT as
e st a b l i sh e d i n S t e p s 1 t h r o u g h 5 .
34. Press RUN/STOP Key to terminate test
operation.
UUT ANTENNA PATTERN AT
CROSSOVER
3 5 . P r e ss P W R T E S T K e y t o e n t e r P o w e r &
Frequency screen.
36. Press RUN/STOP Key to initiate test
o p e r a t i o n . R u n t e st f o r > 3 0 se c.
37. Verify power (ERP) is ≤3 dB below the
g r e a t e r E R P o f t h e t w o a d j a ce n t " X " T e st
Locations.
3 8 . P r e ss R U N / S T O P K e y t o e n d t e st
operation.
39. Perform Steps 21 through 24 and 26
through 29 from all "X" Test Locations
sh o w n i n 1 - 2 - 4 , F i g u r e 2 0 . S t a y a t sa m e
distance from UUT as established in
Steps 1 through 5.
40. Perform Steps 25 through 29 from all
"Y" Test Locations shown in 1-2-4,
Figure 20.
41. Perform Steps 30 through 38 from all
"Z" Test Locations shown in 1-2-4,
Figure 20.
1-2-4
Page 28
Jun 1/97
O PERATIO N MANUAL
TCAS- 201
SECTION 3 - SPECIFICATIONS
NOTE:
Specifications are subject to change without notice.
SIGNAL GENERATOR (REPLY CHARACTERISTICS)
RF SIGNAL
Output Frequency:
1 0 9 0 M H z ( M* \ & % : 1 EQ P V T Q N N G F
Level (referenced to P1/F1):
- 6 7 . 3 5 d B m ( ± 2 d B ) a t R F I / O C o n n e ct o r ( 1 9 . 5 d B
Attenuation) manually adjustable from nominal in
0 . 5 d B st e p s
Attenuation:
Range:
0 to 50 dB (automatically set according to antenna
s e p a r a t i o n d i s t a n c e s p e c i f i e d i n S e t u p o r m a n u a l l y se t i n
0 . 5 d B st e p s [ W h i sp e r - S h o u t M o n i t o r ] )
Accuracy:
±0.5 dB (0 to 40 dB)
GENERATED REPLIES
Reply Modes:
C (with or without Altitude Reporting)
S (Downlink Formats [DF] 0, 16) (Squitter DF11)
PULSE CHARACTERISTICS (Measured at 50% Amplitude Points)
S p a ci n g :
ATCRBS:
F1
F1
F1
F1
F1
F1
F1
F1
F1
F1
F1
F1
F1
to
to
to
to
to
to
to
to
to
to
to
to
to
F2:
C1:
A1:
C2:
A2:
C4:
A4:
B1:
D1:
B2:
D2:
B4:
D4:
2 0 . 3 0 µ s ( ± 5 0 n s)
1 . 4 5 µ s ( ± 5 0 n s)
2 . 9 0 µ s ( ± 5 0 n s)
4 . 3 5 µ s ( ± 5 0 n s)
5 . 8 0 µ s ( ± 5 0 n s)
7 . 2 5 µ s ( ± 5 0 n s)
8 . 7 0 µ s ( ± 5 0 n s)
1 1 . 6 0 µ s ( ± 5 0 n s)
1 3 . 0 5 µ s ( ± 5 0 n s)
1 4 . 5 0 µ s ( ± 5 0 n s)
1 5 . 9 5 µ s ( ± 5 0 n s)
1 7 . 4 0 µ s ( ± 5 0 n s)
1 8 . 8 5 µ s ( ± 5 0 n s)
P2:
P3:
P4:
D1:
D(n=2 to 112):
1 . 0 0 µ s ( ± 5 0 n s)
3 . 5 0 µ s ( ± 5 0 n s)
4 . 5 0 µ s ( ± 5 0 n s)
8 . 0 0 µ s ( ± 5 0 n s)
( 1 . 0 µ s t i m e s [ n - 1 ] ) ( ± 5 0 n s)
Mode S:
P1
P1
P1
P1
D1
to
to
to
to
to
1-3-1
Page 1
Ja n 1 / 0 4
O PERATIO N MANUAL
TCAS- 201
SIGNAL GENERATOR (REPL Y CHARACTERISTICS) (cont)
PULSE CHARACTERISTICS (Measured at 50% Amplitude Points) (cont)
Widths:
ATCRBS:
0 . 4 5 µ s ( ± 5 0 n s)
Mode S:
P1 through P4:
0 . 5 0 µ s ( ± 5 0 n s)
D1 through D112:
0 . 5 0 µ s ( ± 5 0 n s ) p u l s e w i d t h i n a 1 . 0 0 µ s ( ± 5 0 n s)
chip (bit) width (PPM data:
f i r st h a l f = " 1 " ,
second half = "0".)
R i se a n d F a l l T i m e s :
Rise Time (All Modes):
50 to 100 ns
Fall Time (All Modes):
50 to 200 ns
A m p l i t u d e L e ve l s:
All Pulses:
± 1 d B r e l a t i ve t o F 1 ( A T C R B S ) o r P 1 ( M o d e S ) l e ve l
DISPLAYED FUNCTIONS
P e r ce n t R e p l y :
0 to 100%
Resolution:
10%
Accuracy:
±1%
Range Delay (Selected Range plus
Antenna Separation Distance):
Range:
0.5 to 30 nmi
R e so l u t i o n :
5 0 n s st e p s
Accuracy:
±0.02 nmi
Range Rate:
-1200 to +1200 kts
Resolution:
10 kts
Accuracy:
±10%
Altitude Range:
R e so l u t i o n :
Altitude Rate:
-1000 to +126,700 feet
100 feet
-10000 to +10000 fpm
R e so l u t i o n :
100 fpm
Accuracy:
±10%
Mode S Address:
S e l e ct a b l e
Squitter Control:
ON or OFF
Range:
0.8 to 1.2 seconds
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UUT MEASUREMENTS (INTERROGATIONS)
F r e q u e n cy ( M o d e S ) ( A v e r a g e
over 30 sec of Operation):
Range:
1029.9 to 1030.1 MHz
Accuracy:
±10 kHz
Resolution:
1 kHz
P o w e r ( M o d e S ) ( A ve r a g e o ve r
30 sec of Operation):
Direct Connection-Peak Pulse
Power:
Range:
+46 to +58 dBm (40 to 631 W)
Accuracy:
±1 dB
Resolution:
0.1 dB
Effective Radiated Power
(ERP) (Mode S):
Range:
Detectable Modes:
+48 to +56 dBm (63 to 398 W)
ATCRBS Only All-Call (Mode C)
Mode S Uplink Formats 0 and 16
P u l se S p a ci n g :
ATCRBS (Mode C All-Call):
S1 to P1:
Accepts:
Rejects:
2 . 0 µ s ( ± 2 0 0 n s)
±1.0 µs
P1 to P3:
Accepts:
Rejects:
2 1 . 0 µ s ( ± 2 0 0 n s)
±1.0 µs
P1 to P4:
Accepts:
Rejects:
2 3 . 0 µ s ( ± 2 5 0 n s)
±1.0 µs
Mode S:
P1 to P2:
Accepts:
Rejects:
2 . 0 µ s ( ± 1 0 0 n s)
±1.0 µs
P1 to SPR:
Accepts:
Rejects:
4 . 7 5 µ s ( ± 1 0 0 n s)
±1.0 µs
Simulated Transponder MTL:
+ 4 4 . 2 5 d B m ( ± 2 d B ) a t R F I / O C o n n e ct o r ( 1 9 . 5 d B
Attenuation) manually adjustable from nominal in
0 . 5 d B st e p s
ATCRBS Suppression Detection:
Rejects:
P 2 o r S 1 > 0 . 5 d B a b o v e L e v e l o f P 1 ( < 1 0 % r e p l i e s)
Accepts:
P2 or S1 >0.5 dB below MTL (>90% replies)
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TEST ANTENNA
Remote Antenna VSWR:
<1.5:1
Gain:
9.5 dB typically, specified on the antenna
Range:
6 ft (1.83 m) to 500 ft (152.4 m)
BATTERY OPERATION
Duration:
1 . 5 h o u r s b e f o r e r e ch a r g e a t 2 5 ° C
Automatic Shutoff:
A f t e r 1 5 m i n o f n o n - u se
PO WER REQ UIREMENT S
Source Voltage and Frequency:
100 to 120 VAC at 60 Hz
220 to 240 VAC at 50 Hz
Power Consumption:
3 7 W M a xi m u m
34 W Nominal at 115 VAC
26 W Nominal at 230 VAC
Nominal Input Current:
0.4 A at 115 VAC
0.2 A at 230 VAC
FUSE REQ UIREMENTS
F1 and F2:
100 to 120 VAC:
1 . 0 A , 2 5 0 V , T yp e F
220 to 240 VAC:
0 . 5 A , 2 5 0 V , T yp e F
SAF ETY
T h i s i n s t r u m e n t i s d e s i g n e d t o c o m p l y w i t h t h e r e q u i r e m e n t s o f E N 6 1 0 1 0 - 1 / I E C 1 0 1 0 - 1 , f o r C l a ss 1
portable equipment and is for use in a pollution degree 2 environment. The equipment is designed
to operate from an installation category II supply, to environmental conditions specified in para 1.4
of EN61010-1.
O PERATIO NAL ENVIRO NMENTAL CONSIDERATIONS
T h i s i n s t r u m e n t o p e r a t e s o v e r t e m p e r a t u r e e xt r e m e s o f - 2 0 ° t o + 5 0 ° C .
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SECTION 4 - SHIPPING
1. SHIPPING TEST SETS
1.1 INFORMATION
1.2 REPACKING PROCEDURE
Test Sets returned to factory for calibration,
service or repair must be repackaged and
sh i p p e d a c c o r d i n g t o t h e f o l l o w i n g co n d i t i o n s :
M a k e s u r e b o t t o m p a c k i n g m o l d i s se a t e d
on floor of shipping container.
A u t h o r i za t i o n
C a r e f u l l y w r a p T e s t S e t w i t h p o l ye t h yl e n e
sheeting to protect finish.
Do not return any products to factory without
f i r s t r e c e i vi n g a u t h o r i z a t i o n f r o m A e r o f l e x
Customer Service Department.
Place Test Set into shipping container,
ma ki n g su r e T e st S e t i s se cu r e l y se a t e d i n
bottom packing mold.
CONTACT: Aeroflex
Customer Service
P l a c e 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 st 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 so l i d l y i n
bottom packing mold.
Telephone:
FAX:
email:
(800) 835-2350
(316) 524-2623
service@aeroflex.com
Tagging Test Sets
C l o s e s h i p p i n g c o n t a i n e r l i d s a n d se a l w i t h
shipping tape or an industrial stapler. Tie
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 si st a n t
rope, twine or equivalent.
All Test Sets must be tagged with:
Identification and address of owner.
Nature of service or repair required.
Model Number.
Serial Number.
Shipping Containers
T e st S e t s m u s t b e r e p a c k a g e d i n o r i g i n a l
shipping containers using original packing
m o l d s. I f 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 a n d
materials are not available, contact Aeroflex
C u s t o m e r S e r v i c e f o r s h i p p i n g i n s t r u ct i o n s.
Freight Costs
All freight costs on non-warranty shipments are
assumed by the customer. (See “Warranty
Packet” for freight charge policy on warranty
claims.)
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TOP PACKING
MOLD
TEST INSTRUMENT
WRAPPED WITH
POLYETHYLENE
SHEETING
HOLD DOWN
STRAP
BOTTOM PACKING
MOLD
SHIPPING CONTAINER
Repacking Procedure
Figure 1
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SECTION 5 - STORAGE
1. STO RING TEST SETS
Perform the following storage precautions
w h e n e v e r t h e T e s t S e t i s s t o r e d f o r e xt e n d e d
periods:
D i s c o n n e c t T e s t S e t f r o m a n y e l e ct r i ca l
power source.
D i sco n n e c t a n d s t o r e a c p o w e r ca b l e a n d
other accessories with Test Set.
Cover Test Set to prevent dust and debris
f r o m co v e r i n g a n d e n t e r i n g T e s t S e t .
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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 .
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APPENDIX A - CONNECTOR PIN-OUT TABLES
1. TABLE OF I/O CONNECTORS
CONNECTOR
TYPE
SIGNAL NAME
SIGNAL TYPE
INPUT/OUTPUT
J10050
IEC-320
AC PWR
ac Line Power
INPUT
J10053
LEMO
COMM
RS-232C
INPUT/OUTPUT
Refer to Appendix A, Table 2 for COMM Connector Pin-Out description.
J10054
BNC
INTERR VIDEO
VIDEO (Direct
Connection
Only)
OUTPUT
J10055
BNC
SYNC
TTL
OUTPUT
J10056
BNC
MONITOR
TTL VIDEO
OUTPUT
J10057
BNC
ANTENNA
RF
INPUT/OUTPUT
J10058
TNC
RF I/O
RF
INPUT/OUTPUT
I / O C o n n e ct o r s
Table 1
2. CO MM CO NNECTO R ( J10053) PIN- O UT TABLE
PIN NO.
SIGNAL NAME
SIGNAL TYPE
INPUT/OUTPUT
POLARITY
1
EXT SYNC
TTL
OUTPUT
RISING EDGE
2
EXT PULSE
TTL
INPUT
ACTIVE LOW
3
EXT DPSK IN
TTL
INPUT
4
EXT DPSK OUT
CMOS
OUTPUT
5
SPARE
6
TXD
BIPOLAR
OUTPUT
7
DTR
BIPOLAR
OUTPUT
8
RXD
BIPOLAR
INPUT
9
CTS
BIPOLAR
INPUT
ACTIVE LOW
10
GND
OUTPUT
GROUND
ACTIVE LOW
P i n - O u t f o r C O M M C o n n e ct o r
Table 2
APPENDIX A
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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 .
APPENDIX A
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O PERATIO N MANUAL
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APPENDIX B - SIGNAL FORMATS
1. OPER A T ING GOAL S
M o d e S c o m b i n e s s e c o n d a r y s u r v e i l l a n ce r a d a r
a n d a g r o u n d - a i r - g r o u n d d a t a l i n k s y st e m t o
provide aircraft surveillance and
communications necessary for supporting
automated ATC in dense traffic environments.
Mode S provides common-channel
i n t e r o p e r a t i o n w i t h t h e A T C b e a c o n syst e m a n d
may be implemented over an extended
ATCRBS-to-Mode S transition period. In
supporting ATC automation, Mode S provides
t h e r e l i a b l e co m m u n i ca t i o n s n e ce ssa r y f o r d a t a
link services.
2. MO DE S MESSAG E CO NTENT
2.3 DATA LINK COMMUNICATIONS
T h e d i s c r e t e a d d r e s s i n g a n d d i g i t a l e n co d i n g
a l l o w M o d e S t r a n s m i s s i o n s t o b e u se d a s
digital data links. Interrogation and reply
f o r m a t s o f t h e M o d e S syst e m co n t a i n
s u f f i c i e n t c o d i n g s p a c e t o t r a n s m i t d a t a . M o st
Mode S data link transmissions are handled as
one 56-bit message included as part of long
1 1 2 - b i t i n t e r r o g a t i o n s o r r e p l i e s. T h e
transmissions include the message in addition
t o s u r v e i l l a n c e d a t a , a n d i s g e n e r a l l y u se d i n
place of a surveillance interrogation and/or
reply.
All discrete Mode S interrogations (56-bit or
112-bit) and replies (except the All Call reply)
co n t a i n t h e 2 4 - b i t d i s c r e t e a d d r e s s o f t h e M o d e
S t r a n s p o n d e r u p o n w h i c h 2 4 e r r o r - d e t e ct i n g
p a r i t y ch e ck b i t s a r e o v e r l a i d . I n t h e A l l C a l l
r e p l y, t h e 2 4 p a r i t y c h e c k b i t s a r e o v e r l a i d o n
the address of the Mode S interrogator. The
t e xt o f t h e r e p l y i n c l u d e s t h e d i s c r e t e a d d r e s s
of the transponder.
A n e f f i c i e n t t r a n s m i s s i o n o f l o n g e r m e ssa g e s i s
a c c o m p l i s h e d b y t h e e x t e n d e d l e n g t h m e ssa g e
( E L M ) ca p a b i l i t y ( U F 2 4 a n d D F 2 4 ) . U si n g t h i s
capability, a sequence of up to sixteen 80-bit
message segments (each with a 112-bit
t r a n sm i ssi o n ) i s t r a n sm i t t e d , e i t h e r g r o u n d - t o air or air-to-ground and is acknowledged with a
single reply/interrogation. ELMs do not
c o n t a i n s u r v e i l l a n c e d a t a a n d t h u s ca n n o t
su b st i t u t e f o r a su r ve i l l a n ce i n t e r r o g a t i o n - r e p l y
cycl e .
2.2 SURVEILLANCE
3. SIGNAL FORMATS
The primary function of Mode S is surveillance.
F o r t h e M o d e S t r a n s p o n d e r , t h i s f u n ct i o n i s
a cco m p l i sh e d b y u s i n g s h o r t ( 5 6 - b i t )
t r a n sm i ssi o n s i n b o t h d i r e c t i o n s . I n t h e s e
transmissions, the aircraft reports altitude
(DF04) or ATCRBS 4096 code as well as flight
s t a t u s ( a i r b o r n e , o n t h e g r o u n d , a l e r t , S p e ci a l
Position Identification [SPI], etc.).
Signal formats for uplink and downlink
messages are outlined in Chapter 2, RTCA DO181 and Chapter 2, Volume I of RTCA DO-185.
T a b l e s 1 , 2 , 3 , 4 a n d 5 i n A p p e n d i x B co n t a i n
the signal formats and definitions. Data is
e x p r e s s e d i n d e c i m a l u n l e s s o t h e r w i se
sp e ci f i e d . R e f e r t o A p p e n d i x B , T a b l e 6 f o r
c o n v e r s i o n t o h e x a d e c i m a l , o c t a l o r b i n a r y.
2.1 ADDRESS/PARITY (FIELD AP)
APPENDIX B
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FORMAT
NO.
UF
0 (0 0000)
 3  ( R L : 1 )  4  ( A Q : 1 ) ( B D : 8 )  1 0  ( A P : 2 4 ) . . . . . . . . . S h o r t A i r - A i r S u r ve i l l a n ce
1 (0 0001)  27 or 83  (AP:24)
2 (0 0010)  27 or 83  (AP:24)
3 (0 0011)  27 or 83  (AP:24)
4 (0 0100)
(PC:3)
(RR:5)
(DI:3)
(SD:16)
( A P : 2 4 ) . . S u r ve i l l a n ce , A l t i t u d e R e q u e st
5 (0 0101)
(PC:3)
(RR:5)
(DI:3)
(SD:16)
( A P - 2 4 ) . . S u r ve i l l a n ce , I d e n t i t y R e q u e st
6 (0 0110)  27 or 83  (AP:24)
7 (0 0111)  27 or 83  (AP:24)
8 (0 1000)  27 or 83  (AP:24)
9 (0 1001)  27 or 83  (AP:24)
10 (0 1010)  27 or 83  (AP:24)
11 (0 1011)
(PR:4) (II:4) 19  (AP:24) ................ Mode S Only All Call
12 (0 1100)  27 or 83  (AP:24)
13 (0 1101)  27 or 83  (AP:24)
14 (0 1110)  27 or 83  (AP:24)
15 (0 1111)  27 or 83  (AP:24)
1 6 ( 1 0 0 0 0 )  3  ( R L : 1 )  4  ( A Q : 1 )  1 8  ( M U : 5 6 ) ( A P : 2 4 ) . . . . . . . . . L o n g A i r - A i r S u r ve i l l a n ce
17 (1 0001)  27 or 83  (AP:24)
18 (1 0010)  27 or 83  (AP:24)
19 (1 0011)  27 or 83  (AP:24)
20 (1 0100)
( P C : 3 ) ( R R : 5 ) ( D I : 3 ) ( S D : 1 6 ) ( M A : 5 6 ) ( A P : 2 4 ) . . . . . . . . C o m m - A , A l t i t u d e R e q u e st
21 (1 0101)
( P C : 3 ) ( R R : 5 ) ( D I : 3 ) ( S D : 1 6 ) ( M A : 5 6 ) ( A P : 2 4 ) . . . . . . . . C o m m - A , I d e n t i t y R e q u e st
22 (1 0110)  27 or 83  (AP:24)
23 (1 0111)  27 or 83  (AP:24)
24 (1 1xxx)
(RC:2)
(NC:4)
( MC : 8 0 )
(AP:24) ........................Comm-C (ELM)
NOTE:
( X X : M ) r e p r e s e n t s a f i e l d d e s i g n a t e d X X co n t a i n i n g M n u m b e r o f a ssi g n e d b i t s.
NOTE:
 N  r e p r e s e n t s f r e e c o d i n g s p a c e w i t h N a v a i l a b l e b i t s , c o d e d a s Z e r o s f o r t r a n s m i s si o n .
NOTE:
F o r U p l i n k F o r m a t s ( U F ) 0 t h r o u g h 2 3 , t h e f o r m a t n u m b e r co r r e sp o n d s t o t h e b i n a r y co d e
in the first 5 bits of the interrogation. Format number 24 is arbitrarily defined as the
f o r m a t b e g i n n i n g w i t h O n e s i n t h e f i r s t t w o b i t p o s i t i o n s . T h e f o l l o w i n g t h r e e b i t s ( xxx)
vary with the interrogation content.
NOTE:
All formats are shown for completeness, although a number of them are unused.
Overview of Mode S Interrogation Formats
Table 1
APPENDIX B
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FORMAT
NO.
DF
0 ( 0 0 0 0 0 ) ( V S : 1 ) ( C C : 1 ) - 1 - ( S L : 3 ) - 2 - ( R I : 4 ) - 2 - ( A C : 1 3 ) ( A P : 2 4 ) . . . . . . . . S h o r t A i r - A i r S u r ve i l l a n ce
1 (0 0001)
 27 or 83  (P:24)
2 (0 0010)
 27 or 83  (P:24)
3 (0 0011)
 27 or 83  (P:24)
4 (0 0100)
(FS:3)
(DR:5)
(UM:6)
(AC:13)
( A P : 2 4 ) . . . . . S u r ve i l l a n ce , A l t i t u d e R e p l y
5 (0 0101)
(FS:3)
(DR:5)
(UM:6)
(ID:13)
( A P - 2 4 ) . . . . . S u r ve i l l a n ce , I d e n t i t y R e p l y
6 (0 0110)
 27 or 83  (P:24)
7 (0 0111)
 27 or 83  (P:24)
8 (0 1000)
 27 or 83  (P:24)
9 (0 1001)
 27 or 83  (P:24)
10 (0 1010)
 27 or 83  (P:24)
11 (0 1011)
(CA:3)
(AA:24)
( P I : 2 4 ) . . . . . . . . . . . . . A l l C a l l R e p l y/ S q u i t t e r
12 (0 1100)
 27 or 83  (P:24)
13 (0 1101)
 27 or 83  (P:24)
14 (0 1110)
 27 or 83  (P:24)
15 (0 1111)
16 (1 0000)
17 (1 0001)
 27 or 83  (P:24)
( V S : 1 ) - 2 - ( S L : 3 ) - 2 - ( R I : 4 ) - 2 - ( A C : 1 3 ) ( M V : 5 6 ) ( A P : 2 4 ) . . . . . . . . . L o n g A i r - A i r S u r ve i l l a n ce
(CA:3)
(AA:24)
(ME:56)
( P I : 2 4 ) . . . . . . . . . . . . . . . . . . . E xt e n d e d S q u i t t e r
18 (1 0010)
 27 or 83  (P:24)
19 (1 0011)
 27 or 83  (P:24)
20 (1 0100)
(FS:3) (DR:5) (UM:6) (AC:13) (MB:56) (AP:24) ...........Comm-B, Altitude Reply
21 (1 0101)
(FS:3) (DR:5) (UM:6) (ID:13) (MB:56) (AP:24) ........... Comm-B, Identity Reply
22 (1 0110)
 27 or 83  (P:24)
23 (1 0111)
 27 or 83  (P:24)
24 (1 1xxx)
(K E : 1 )
(ND:4)
(MD:80)
(AP:24) ....................... Comm-D (ELM)
NOTE:
( X X : M ) r e p r e s e n t s a f i e l d d e si g n a t e d X X co n t a i n i n g M n u m b e r o f a ssi g n e d b i t s.
NOTE:
( P : 2 4 ) r e p r e s e n t s a 2 4 - b i t f i e l d r e se r ve d f o r p a r i t y i n f o r m a t i o n .
NOTE:
 N  r e p r e s e n t s f r e e c o d i n g s p a c e w i t h N a v a i l a b l e b i t s , c o d e d a s Z e r o s f o r t r a n sm i ssi o n .
NOTE:
F o r D o w n l i n k F o r m a t s ( D F ) 0 t h r o u g h 2 3 , t h e f o r m a t n u m b e r co r r e sp o n d s t o t h e b i n a r y
c o d e i n t h e f i r s t 5 b i t s o f t h e r e p l y. F o r m a t n u m b e r 2 4 i s a r b i t r a r i l y d e f i n e d a s t h e f o r m a t
beginning with Ones in the first two bit positions. The following three bits (xxx) vary with
the reply content.
NOTE:
All formats are shown for completeness, although a number of them are unused.
O v e r vi e w O f M o d e S R e p l y F o r m a t s
Table 2
APPENDIX B
Page 3
Ja n 1 / 0 4
O PERATIO N MANUAL
TCAS- 201
NO. OF
BITS
BITS
POSITION
AA
24
9-32
X
The aircraft address announced in the clear,
used in DF=11, 17.
AC
13
20-32
X
The altitude code used in formats DF=0, 4,
16 and 20. All bits are Zeros if altitude
information is not available. Contains
metric altitude if M-bit (26) is One.
AP
24
24
33-56
89-112
X
AQ
1
14
X
Designates formats UF=0, 16 as acquisition
t r a n sm i ssi o n s. B i t 1 4 ( R I , D F = 0 , 1 6 ) ,
r e p e a t s A Q a s r e ce i ve d b y t r a n sp o n d e r .
BD
8
15-22
X
Contains the identity of the ground-initiated
C o m m - B r e g i st e r co n t e n t s t o a p p e a r i n t h e
MV field of the corresponding reply, used in
UF=0.
CA
3
6-8
X
U se d i n D F = 1 1 , S q u i t t e r o r A l l C a l l r e p l y, t o
r e p o r t t r a n sp o n d e r ca p a b i l i t y. C o d e s a r e :
0 = Level 1, no communications capability
( su r ve i l l a n ce o n l y, ) T r a n sp o n d e r a cce p t s
U F = 0 , 4 , 5 , 1 1 ; T r a n sp o n d e r t r a n sm i t s
DF=0, 4, 5, 11.
1 = L e ve l 2 , C o m m - A a n d C o m m - B
capability, Transponder accepts UF=0,
4 , 5 , 1 1 , 2 0 , 2 1 ; T r a n sp o n d e r t r a n sm i t s
DF=0, 4, 5, 11, 20, 21.
2 = L e ve l 3 , C o m m - A , C o m m - B a n d u p l i n k
ELM capability, Transponder accepts
U F = 0 , 4 , 5 , 1 1 , 2 0 , 2 1 , 2 4 ; T r a n sp o n d e r
t r a n sm i t s D F = 0 , 4 , 5 , 1 1 , 2 0 , 2 1 .
3 = Level 4, Comm-A, Comm-B, uplink and
downlink ELM capability, Transponder
a cce p t s U F = 0 , 4 , 5 , 1 1 , 2 0 , 2 1 , 2 4 ;
T r a n sp o n d e r t r a n sm i t s D F = 0 , 4 , 5 , 1 1 ,
20, 21, 24.
4 = Level 2, 3 or 4; ability to set code 7, and
is on the ground.
5 = Level 2, 3 or 4; ability to set code 7, and
is airborne.
6 = Level 2,3 or 4; ability to set code 7.
7 = DR≠0 or FS=3,4 or 5.
N O T E : C o d e s 4 - 7 a r e f o r sq u i t t e r s o n l y.
CC
1
7
FIELD
SUB
FIELD
FORMATS
UP DOWN
X
X
CONTENT
P a r i t y o ve r l a i d o n t h e A d d r e ss a p p e a r s a t
the end of all transmissions, uplink and
downlink, with the exception of format
DF=11.
Indicates transponder has ability to support
crosslink capability (decode the contents of
the UF=0 BD field and respond with the
contents of the specified ground-initiated
C o m m - B r e g i st e r i n t h e M V f i e l d o f t h e
corresponding DF=16 reply. Used in DF=0.
Overview of Format Definitions
Table 3
APPENDIX B
Page 4
Jan 1/04
O PERATIO N MANUAL
TCAS- 201
NO. OF
BITS
BITS
POSITION
DF
5
1-5
DI
3
14-16
DR
5
9-13
X
FS
3
6-8
X
FIELD
SUB
FIELD
FORMATS
UP DOWN
X
X
CONTENT
The first field in all downlink formats is the
transmission descriptor.
I d e n t i f i e s c o d i n g c o n t a i n e d i n t h e S D co d e s
are:
0 = SD has Interrogator Identifier (IIS).
1 = S D co n t a i n s ( I I S , M B S , M E S , L O S , R S S ,
TMS).
2 - 6 = N o t a ssi g n e d .
R e q u e s t s e x t r a c t i o n o f d o w n l i n k m e ssa g e s
f r o m t h e t r a n sp o n d e r b y t h e i n t e r r o g a t o r
and appears in formats DF=4, 5, 20, 21.
The codes are:
0 = No downlink request.
1 = R e q u e st t o se n d C o m m - B m e ssa g e ( B b i t
se t ) ,
2 = T C A S i n f o r m a t i o n a va i l a b l e .
3 = T C A S i n f o r m a t i o n a v a i l a b l e a n d r e q u e st
t o se n d C o m m - B m e ssa g e .
4 = Comm-B Broadcast #1 available.
5 = Comm-B Broadcast #2 available.
6 = TCAS information and Comm-B
Broadcast #1 available.
7 = TCAS information and Comm-B
Broadcast #2 available.
8-15 = Not assigned.
1 6 - 3 1 = R e q u e st t o se n d n - se g m e n t s,
signified by 15 + n.
C o d e s 1 - 1 5 t a ke p r i o r i t y o ve r co d e s 1 6 - 3 1 .
R e p o r t s f l i g h t st a t u s o f a i r cr a f t a n d i s u se d
in formats DF=4, 5, 20, 21. Codes are:
CODE ALERT
0
SPI
ON THE
AIRBORNE GROUND
no
no
yes
no
1
no
2
yes
no
no
yes
no
yes
3
yes
no
no
no
yes
4
yes
yes
either
5
no
yes
either
6, 7 are not assigned.
ID
13
2-32
II
4
10-13
X
X
T h e 4 0 9 6 i d e n t i f i c a t i o n c o d e , n u m b e r s , a s,
se t b y t h e p i l o t , i n D F = 5 , 2 1 .
Identifies the interrogator and appears in
UF=11, the Mode S Only All Call.
N O T E : T h e s a m e i n f o r m a t i o n m a y a l so
appear in the IIS subfields.
O ve r vi e w o f F o r m a t D e f i n i t i o n s
T a b l e 3 ( co n t )
APPENDIX B
Page 5
Ja n 1 / 0 4
O PERATIO N MANUAL
TCAS- 201
NO. OF
BITS
BITS
POSITION
KE
1
4
MA
56
33-88
X
M e ssa g e s d i r e ct e d t o t h e a i r cr a f t , p a r t o f
C o m m - A i n t e r r o g a t i o n s, U F = 2 0 , 2 1 .
ADS
8
33-40
X
Defines the content of the MA message field
in Comm-A requests and is expressed in two
g r o u p s o f 4 b i t s e a ch , A D S 1 ( 3 3 - 3 6 ) a n d
ADS2 (37-40).
ADS1
4
33-36
X
P a r t o f t h e A - D e f i n i t i o n S u b f i e l d a n d i s se t
t o 0 f o r T C A S S e n si t i vi t y L e ve l C o m m a n d s.
ADS2
4
37-40
X
P a r t o f t h e A - D e f i n i t i o n S u b f i e l d a n d i s se t
t o 5 f o r T C A S S e n si t i vi t y L e ve l C o m m a n d s.
SLC
4
41-44
X
56
33-88
X
S e n si t i vi t y L e ve l C o m m a n d f o r t h e T C A S
a i r cr a f t . T h e co d e s a r e :
0 = No command.
1 = N o t A ssi g n e d .
2 = S e l e ct T A _ O N L Y m o d e o f o p e r a t i o n .
3 = S e t T C A S S e n si t i vi t y L e ve l t o 3 .
4 = S e t T C A S S e n si t i vi t y L e ve l t o 4 .
5 = S e t T C A S S e n si t i vi t y L e ve l t o 5 .
6 = S e t T C A S S e n si t i vi t y L e ve l t o 6 .
7 = S e t T C A S S e n si t i vi t y L e ve l t o 7 .
8 - 1 4 = N o t A ssi g n e d .
15 = Cancel previous Sensitivity Level.
M e ssa g e s t o b e t r a n sm i t t e d t o i n t e r r o g a t o r ,
p a r t o f t h e C o m m - B r e p l i e s, D F = 2 0 , 2 1 .
The field contains Data Link, Capability
R e p o r t s o r A i r cr a f t I d e n t i f i ca t i o n R e p o r t s o r
T C A S R e so l u t i o n A d vi so r y R e p o r t s.
ACS
20
45-64
X
Comm-A capability subfield reports data link
service(s) supported by the installation. If
all bits are Zeros, no Comm-A data link
se r vi ce s a r e su p p o r t e d .
AIS
48
41-88
X
A i r cr a f t I d e n t i f i ca t i o n , r e p o r t e d w h e n a
su r ve i l l a n ce o r C o m m - A i n t e r r o g a t i o n
( U F = 4 , 5 , 2 0 , 2 1 ) co n t a i n s R R = 1 8 a n d
D I = a n yt h i n g b u t 7 . A I S co n t a i n s u p t o e i g h t
6-bit characters as defined in Table 4.
FIELD
SUB
FIELD
MB
FORMATS
UP DOWN
X
CONTENT
Defines the content of the ND and MD fields
in Comm-D replies, DF=24.
Overview of Format Definitions
T a b l e 3 ( co n t )
APPENDIX B
Page 6
Jan 1/04
O PERATIO N MANUAL
TCAS- 201
FIELD
SUB
FIELD
NO. OF
BITS
BITS
POSITION
FORMATS
UP DOWN
MB
ARA
14
41-54
X
BCS
16
65-80
X
BDS
8
33-40
X
D e f i n e s t h e c o n t e n t o f t h e M B m e ssa g e f i e l d
in reply to ground-initiated Comm-B and is
e x p r e s s e d i n t w o g r o u p s o f 4 b i t s e a ch ,
BDS1 (33-36) and BDS2 (37-40).
BDS1
4
33-36
X
BDS2
4
37-40
X
C o r r e sp o n d s w i t h R R i n U F = 4 , 5 , 2 0 , 2 1 .
The codes are:
0 = M B co n t a i n s A i r - i n i t i a t e d C o m m - B .
1 = MB contains Data Link Capability
Report.
2 = M B co n t a i n s A i r cr a f t I d e n t i f i ca t i o n .
3 = M B co n t a i n s T C A S R e so l u t i o n A d vi so r y.
4-15 = Not assigned.
B a si c r e p o r t u se s B D S 2 = 0 . M o r e co m p l e x
Mode S installations report additional
c a p a b i l i t i e s i n v a r i o u s f o r m a t s a s si g n e d t o
B D S 2 co d e s o t h e r t h a n 0 a s r e q u e st e d b y
i n t e r r o g a t o r , s p e c i f i e d i n t h e R R S su b f i e l d
of SD.
CFS
4
41-44
X
CONTENT
T C A S R e so l u t i o n A d vi so r y R e p o r t i n d i ca t i n g
cu r r e n t A ct i ve R e so l u t i o n A d vi so r i e s ( i f a n y)
g e n e r a t e d b y o w n T C A S u n i t a g a i n st o n e o r
m o r e t h r e a t a i r cr a f t . E a ch b i t i n d i ca t e s a
specific resolution advisory with One being
active and Zero being inactive. Bit
indications are:
41-Climb.
4 2 - D o n ’t d e s c e n d .
4 3 - D o n ’t d e s c e n d f a s t e r t h a n 5 0 0 F P M .
4 4 - D o n ’t d e s c e n d f a s t e r t h a n 1 0 0 0 F P M .
45-Don’t descend faster than 2000 FPM.
46-Descend.
47-Don't climb.
48-Don't climb faster than 500 FPM.
4 9 - D o n ' t cl i m b f a st e r t h a n 1 0 0 0 F P M .
5 0 - D o n ' t cl i m b f a st e r t h a n 2 0 0 0 F P M .
51-Turn left.
52-Turn right.
53-Don't turn left.
54-Don't turn right.
C o m m - B c a p a b i l i t y s u b f i e l d r e p o r t s i n st a l l e d
data sources that can be accessed by the
ground for transmission via a groundi n i t i a t e d C o m m - B . I f a l l b i t s a r e Z e r o s, n o
data is accessible by a ground-initiated
Comm-B.
Continuation subfield contains the BDS2
value of the next additional capability report
available from the installation.
O ve r vi e w o f F o r m a t D e f i n i t i o n s
T a b l e 3 ( co n t )
APPENDIX B
Page 7
Ja n 1 / 0 4
O PERATIO N MANUAL
TCAS- 201
FIELD
SUB
FIELD
NO. OF
BITS
BITS
POSITION
MB
ECS
8
81-88
X
Data Link Capability subfield reports ELM
capability of installation. No ELM data link
s e r v i c e s a r e s u p p o r t e d i f a l l b i t s a r e Z e r o s.
MTE
1
60
X
Multiple Threat Encounter bit indicates ≥2
si m u l t a n e o u s T C A S t h r e a t s.
RAC
4
55-58
X
RAT
1
59
X
Resolution Advisory Complements subfield
indicates currently active resolution,
advisory complements (if any) received from
a l l o t h e r T C A S a i r cr a f t w i t h o n - b o a r d
resolution capability. Bits are set to One
w h e n a ct i ve a n d Z e r o w h e n i n a ct i ve . B i t
indications are:
5 5 - D o n ’t d e s c e n d .
5 6 - D o n ’t c l i m b .
57-Don’t turn left.
58-Don't turn right.
R e so l u t i o n A d vi so r y T e r m i n a t e d i n d i ca t o r i s
se t t o O n e f o r 1 8 se co n d s ( ± 1 s e c o n d )
following termination of a previously
reported resolution advisory.
TID
26
33-88
X
Threat Identity Data subfield contains data
a cco r d i n g t o T T I f i e l d . I f T T I = 1 , T I D
co n t a i n s M o d e S a d d r e ss o f t h r e a t i n b i t s
63-85 (bits 87-88 are Zero). If TTI=2, TID
contains altitude, range and bearing data.
TIDA
13
63-75
X
Threat Identity Data, Altitude subfield
reports Mode C altitude code of the threat.
TIDB
6
83-88
X
T h r e a t I d e n t i t y, B e a r i n g su b f i e l d r e p o r t s
m o st r e ce n t b e a r i n g o f t h e t h r e a t .
TIDR
7
76-82
X
T h r e a t I d e n t i t y, R a n g e su b f i e l d r e p o r t s m o st
r e ce n t r a n g e o f t h e t h r e a t .
TTI
2
61-62
X
Threat Type Indicator subfield defines type
of data in TID field.
80
9-88
X
Comm-C field contains one segment of a
sequence of segments transmitted to the
t r a n sp o n d e r i n t h e E L M m o d e . M C i s p a r t o f
UF=24.
4
9-12 (if
RC=0 to 2)
or 25-28 (if
RC=3)
X
I n t e r r o g a t o r I d e n t i f i e r su b f i e l d r e p o r t s t h e
identity of the interrogator (See SD and UM
fields).
MC
IIS
FORMATS
UP DOWN
CONTENT
Overview of Format Definitions
T a b l e 3 ( co n t )
APPENDIX B
Page 8
Jan 1/04
O PERATIO N MANUAL
TCAS- 201
SUB
FIELD
NO. OF
BITS
BITS
POSITION
SRS
16
9-24
80
9-88
X
Comm-D field, part of DF=24, contains one
segment of a sequence of segments
t r a n sm i t t e d b y t h e t r a n sp o n d e r i n t h e E L M
m o d e . I t m a y co n t a i n a su m m a r y o f
received MC segments of an uplink ELM.
16
17-32
X
Reports segments received in a Comm-C
sequence. Starting with bit 17 denoting the
first segment, each successive bit is One if
t h e c o r r e s p o n d i n g s e g m e n t w a s r e ce i ve d .
T A S a p p e a r s i f K E = 1 i n t h e sa m e r e p l y.
R e f e r t o T a b l e 5 f o r va l u e s.
ME
56
33-88
X
E xt e n d e d sq u i t t e r m e ssa g e , p a r t o f D F = 1 7 ,
contains broadcast messages.
MU
56
33-88
X
F i e l d , p a r t o f t h e l o n g a i r - a i r s u r v e i l l a n ce
i n t e r r o g a t i o n U F = 1 6 , co n t a i n s i n f o r m a t i o n
u se d i n a i r - t o - a i r e xch a n g e s ( T C A S ,
R e so l u t i o n M e ssa g e s a n d T C A S B r o a d ca st
M e ssa g e s) .
CHC
3
47-49
X
CVC
2
43-44
X
C a n c e l H o r i z o n t a l R e s o l u t i o n A d v i so r y
C o m p l e m e n t . I n T C A S R e so l u t i o n
M e ssa g e s t r a n sm i t t e d b y T C A S w i t h o u t
h o r i zo n t a l r e so l u t i o n ca p a b i l i t y, C H C i s se t
t o 0 . T h e co d e s a r e :
0 = No cancellation.
1 = C a n ce l , d o n ’t t u r n l e f t .
2 = C a n ce l , d o n ’t t u r n r i g h t .
3 - 7 = N o t a ssi g n e d .
C a n ce l V e r t i ca l R e so l u t i o n A d vi so r y
Complement. The codes are:
0 = No cancellation.
1 = C a n c e l , d o n ’t d e s c e n d .
2 = Cancel, don’t climb.
3 = Not assigned.
FIELD
MD
TAS
FORMATS
UP DOWN
X
CONTENT
I f a C o m m - C i n t e r r o g a t i o n ( U F = 2 4 ) co n t a i n s
R C = 3 , t h e S R S su b f i e l d co n t a i n s a l i st o f
se g m e n t r e q u e st - a u t h o r i za t i o n s f o r D E L M s
i n t h e 1 6 - b i t ( 9 - 2 4 ) S R S su b f i e l d . S t a r t i n g
w i t h b i t 9 , d e n o t i n g t h e f i r s t s e g m e n t , e a ch
o f t h e f o l l o w i n g b i t s i s se t t o O n e i f t h e
t r a n sm i ssi o n o f t h e co r r e sp o n d i n g se g m e n t
i s r e q u e st e d . R e f e r t o T a b l e 5 .
O ve r vi e w o f F o r m a t D e f i n i t i o n s
T a b l e 3 ( co n t )
APPENDIX B
Page 9
Ja n 1 / 0 4
O PERATIO N MANUAL
TCAS- 201
FIELD
MU
SUB
FIELD
NO. OF
BITS
BITS
POSITION
FORMATS
UP DOWN
HRC
3
50-52
X
HSB
5
56-60
X
MID
24
65-88
X
CONTENT
H o r i zo n t a l R e so l u t i o n A d vi so r y C o m p l e m e n t .
I n T C A S R e so l u t i o n M e ssa g e s t r a n sm i t t e d
b y T C A S w i t h o u t h o r i zo n t a l r e so l u t i o n
ca p a b i l i t y, H R C i s se t t o 0 . T h e co d e s a r e :
0 = No horizontal resolution advisory
complement sent.
1 = I n t r u d e r T C A S se n se i s t u r n l e f t / d o n o t
turn left.
2 = I n t r u d e r T C A S se n se i s t u r n l e f t / d o n o t
turn right.
3 - 4 = N o t a ssi g n e d .
5 = I n t r u d e r T C A S se n se i s t u r n r i g h t / d o n o t
turn left.
6 = I n t r u d e r T C A S se n se i s t u r n r i g h t / d o n o t
turn right.
7 = Not assigned.
E n co d e d S e n se B i t s f o r H o r i zo n t a l
Resolution Complements provide a parity
coding field protecting the six horizontal
se n se b i t s ( C H C a n d H R C ) a n d a r e u se d i n
TCAS III Resolution Messages.
Contains discrete address of interrogating
a i r cr a f t a n d i s i n T C A S R e so l u t i o n
A d vi so r i e s L o ck R e q u e st s, T C A S R e so l u t i o n
M e ssa g e s a n d T C A S B r o a d ca st M e ssa g e s.
N O T E : T C A S B r o a d ca st M e ssa g e i s se n t a t
10-second intervals.
MTB
1
42
X
Multiple Threat Bit indicates more than one
T C A S t h r e a t w h e n se t t o O n e a n d n o m o r e
t h a n o n e t h r e a t w h e n se t t o Z e r o .
UDS
8
33-40
X
Defines the content of the MU message field
and is expressed in two 4-bit groups, UDS1
(33-36) and UDS2 (37-40).
UDS1
4
33-36
X
I s se t t o 3 f o r T C A S R e so l u t i o n M e ssa g e s
a n d T C A S B r o a d ca st M e ssa g e s.
UDS2
4
37-40
X
I s se t t o 0 f o r T C A S R e s o l u t i o n M e s s a g e s o r
se t t o 2 f o r T C A S B r o a d ca st M e ssa g e s.
VRC
2
45-46
X
V e r t i ca l R e so l u t i o n A d vi so r y, C o m p l e m e n t .
The codes are:
0 = No vertical resolution advisory
complement sent.
1 = Don’t descend.
2 = Don’t climb.
3 = Not assigned.
Overview of Format Definitions
T a b l e 3 ( co n t )
APPENDIX B
Page 10
Jan 1/04
O PERATIO N MANUAL
TCAS- 201
FIELD
SUB
FIELD
NO. OF
BITS
BITS
POSITION
MU
VSB
4
61-64
MV
ARA
FORMATS
UP DOWN
X
CONTENT
E n co d e d S e n se B i t s f o r V e r t i ca l R e so l u t i o n
Complements provide a parity coding field
t o p r o t e ct f o u r ve r t i ca l se n se b i t s ( C V C a n d
V R C ) i n a l l T C A S R e so l u t i o n M e ssa g e s. I f
bits 43-46 do not agree with bits 61-64, the
T C A S r e ce i ve r a ssu m e s a n e r r o r a n d
d i sr e g a r d s m e ssa g e . B i t s a r e a s f o l l o w s:
43
44
45
46
61
62
63
64
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
0
0
0
1
0
0
1
1
1
0
0
1
1
1
0
0
1
0
1
0
0
1
0
1
1
0
1
0
1
0
1
0
1
0
1
1
0
1
1
0
0
0
1
1
1
0
0
1
0
1
0
0
0
1
1
0
1
1
0
0
1
0
0
1
1
1
0
1
0
1
0
1
0
1
0
1
1
0
1
0
0
1
1
0
0
0
1
1
0
1
1
0
1
1
0
0
0
1
1
1
0
0
0
0
1
1
1
1
1
1
1
1
1
56
33-88
X
F i e l d , p a r t o f t h e l o n g a i r - a i r s u r v e i l l a n ce
r e p l y D F = 1 6 , c o n t a i n s i n f o r m a t i o n u se d i n
a i r - t o - a i r e xch a n g e s ( C o o r d i n a t i o n R e p l y
M e ssa g e ) .
14
41-54
X
Same as in MB field.
MTE
1
60
X
Same as in MB field.
RAC
4
55-58
X
Same as in MB field.
RAT
1
59
X
Same as in MB field.
VDS
8
33-40
X
D e f i n e s t h e c o n t e n t o f t h e M V m e ssa g e f i e l d
a n d i s e xp r e sse d i n t w o 4 - b i t g r o u p s, V D S 1
(33-36) and VDS2 (37-40).
VDS1
4
33-36
X
I s se t t o 3 f o r C o o r d i n a t i o n R e p l y M e ssa g e .
VDS2
4
37-40
X
I s se t t o 0 f o r C o o r d i n a t i o n R e p l y M e ssa g e .
NC
4
5-8
ND
4
5-8
X
P r o v i d e s t h e s e g m e n t n u m b e r t r a n sm i t t e d i n
an uplink ELM and is part of a Comm-C
interrogation, UF=24.
X
P r o v i d e s t h e s e g m e n t n u m b e r t r a n sm i t t e d i n
a downlink ELM and is part of a Comm-D
r e p l y, D F = 2 4 .
O ve r vi e w o f F o r m a t D e f i n i t i o n s
T a b l e 3 ( co n t )
APPENDIX B
Page 11
Ja n 1 / 0 4
O PERATIO N MANUAL
TCAS- 201
NO. OF
BITS
BITS
POSITION
PC
3
6-8
PI
24
33-56
PR
4
6-9
FIELD
SUB
FIELD
FORMATS
UP DOWN
X
X
X
CONTENT
Contains operating commands to the
transponder and is part of surveillance and
Comm-A interrogations UF=4, 5, 20, 21.
The codes are:
0 = No changes in transponder state.
1 = Non-selective All Call lockout.
2 = Not assigned.
3 = Not assigned.
4 = C a n ce l B .
5 = Cancel C.
6 = Cancel D.
7 = Not assigned.
Contains the parity overlaid on the
i n t e r r o g a t o r i d e n t i t y co d e . P I i s p a r t o f t h e
r e p l y, D F = 1 1 , t o t h e M o d e S O n l y A l l C a l l .
Field contains commands to the transponder
specifying the reply probability to the Mode
S Only All Call interrogation, UF=11
co n t a i n i n g t h e P R . A co m m a n d t o d i sr e g a r d
any lockout state can also be given. The
assigned codes are:
0 = Reply with probability = 1.
1 = Reply with probability = ½.
2 = Reply with probability = ¼.
3 = Reply with probability = 1/8.
4 = Reply with probability = 1/16.
5,6,7 = Do not Reply.
8 = Disregard lockout, reply with probability
= 1.
9 = Disregard lockout, reply with probability
= ½.
10 = Disregard lockout, reply with,
probability = ¼.
11 = Disregard lockout, reply with
probability = 1/8.
12 = Disregard lockout, reply with
probability = 1/16.
1 3 , 1 4 , 1 5 = D o n o t r e p l y.
NOTE: On receipt of a Mode S Only All Call
containing a PR code other than 0 or
8 , t r a n sp o n d e r e xe cu t e s a r a n d o m
process and makes a reply decision
for the interrogation in accordance
with the commanded probability.
Random occurrence of replies
enables interrogator to acquire
closely spaced aircraft when replies
would otherwise synchronously
garble each other.
Overview of Format Definitions
T a b l e 3 ( co n t )
APPENDIX B
Page 12
Jan 1/04
O PERATIO N MANUAL
TCAS- 201
NO. OF
BITS
BITS
POSITION
RC
2
3-4
RI
4
14-17
RL
1
9
FIELD
SUB
FIELD
FORMATS
UP DOWN
X
Designates transmitted segment as initial,
intermediate or final if coded 0, 1 or 2
r e sp e ct i ve l y. R C = 3 i s u se d t o r e q u e st
C o mm- D D E L M s b y the transponder. R C i s
part of Comm-C interrogation, UF=24.
X
X
CONTENT
I n f o r m a t i o n i n D F = 0 , 1 6 . T h e co d e s a r e :
0 = No on-board TCAS.
1 = Not assigned.
2 = O n - b o a r d T C A S w i t h r e so l u t i o n
capability inhibited.
3 = O n - b o a r d T C A S w i t h ve r t i ca l - o n l y
resolution capability.
4 = O n - b o a r d T C A S w i t h ve r t i ca l a n d
h o r i z o n t a l r e s o l u t i o n c a p a b i l i t y.
5 - 7 = N o t a ssi g n e d .
8 = No maximum airspeed data available.
9 = A i r sp e e d i s ≤ 7 5 kt s.
1 0 = A i r s p e e d i s > 7 5 k t s a n d ≤ 1 5 0 kt s.
1 1 = A i r s p e e d i s > 1 5 0 k t s a n d ≤ 3 0 0 kt s.
1 2 = A i r s p e e d i s > 3 0 0 k t s a n d ≤ 6 0 0 kt s.
1 3 = A i r s p e e d i s > 6 0 0 k t s a n d ≤ 1 2 0 0 kt s.
14 = Airspeed is >1200 kts.
15 = Not assigned.
C o m m a n d , s e n t i n U F = 0 , 1 6 ; s o l i ci t s D F = 0
reply if Zero and DF=16 reply if One (only
i f t r a n sp o n d e r i s a sso ci a t e d w i t h A i r b o r n e
C o l l i si o n A vo i d a n ce S yst e m [ A C A S ]
e q u i p m e n t ) . O t h e r w i se , i n U F = 0 , Z e r o
solicits DF=0 reply and One solicits no
reply. In UF=16, Zero solicits DF=16 reply
and One solicits no reply.
O ve r vi e w o f F o r m a t D e f i n i t i o n s
T a b l e 3 ( co n t )
APPENDIX B
Page 13
Ja n 1 / 0 4
O PERATIO N MANUAL
TCAS- 201
FIELD
SUB
FIELD
RR
NO. OF
BITS
BITS
POSITION
5
9-13
FORMATS
UP DOWN
X
CONTENT
Contains length and content of interrogator
requested reply. RR is part of surveillance
and Comm-A interrogations UF=4, 5, 20, 21.
RR
CODE
REPLY
LENGTH
0-15
Short
N/A
16
Long
Air initiated Comm-B
17
Long
Data link capability
18
Long
Aircraft Identification
19
Long
Resolution Advisories
20-31
Long
Not Assigned
MB CONTENT
N O T E : I f f i r st b i t o f R R co d e i s O n e ,
decimal equivalent of last four bits
of RR code designates code for
BDS1 in reply (ground initiated).
B D S 2 i s a ssu m e d t o b e Z e r o i f n o t
specified by DI=7 and RRS.
SD
16
17-32
X
Contains control codes, as specified by the
DI field affecting transponder protocol and
i s p a r t o f su r ve i l l a n ce a n d C o m m - A
interrogations UF=4, 5, 20, 21.
IIS
4
17-20
X
I n t e r r o g a t o r I d e n t i f i e r su b f i e l d co n t a i n s t h e
self-identification code of the interrogator
and is numerically identical to the II code
t r a n sm i t t e d b y t h e i n t e r r o g a t o r i n M o d e S
Only All Calls. IIS codes are 0 through 15;
I I S = 0 i s n o t a va l i d i n t e r r o g a t o r i d e n t i f i e r f o r
multisite purposes. IIS is sent only when
DI=0, 1 or 7.
LOS
1
26
X
Lockout subfield, if set to One, initiates a
multisite All Call lockout to Mode S Only All
Calls (UF=11) from the Interrogator
i n d i ca t e d i n I I S o f t h e i n t e r r o g a t i o n . I f L O S
is set to Zero, no change in lockout state is
co m m a n d e d . L O S i s se n t o n l y i f D I = 1 o r 7 .
MBS
2
21-22
X
Multisite Comm-B subfield, sent when DI=1,
is assigned the following codes:
0 = N o C o m m - B a ct i o n .
1 = C o m m - B r e se r va t i o n .
2 = C o m m - B cl o se o u t .
Overview of Format Definitions
T a b l e 3 ( co n t )
APPENDIX B
Page 14
Jan 1/04
O PERATIO N MANUAL
TCAS- 201
FIELD
SD
SUB
FIELD
NO. OF
BITS
BITS
POSITION
FORMATS
UP DOWN
MES
3
23-25
X
RRS
4
21-24
X
RSS
2
27-28
X
TMS
4
29-32
X
CONTENT
Multisite ELM subfield, sent when DI=1,
contains reservation and closeout
co m m a n d s f o r E L M a s f o l l o w s:
0 = N o E L M a ct i o n .
1 = C o m m - C r e se r va t i o n .
2 = Comm-C closeout.
3 = C o m m - D r e se r va t i o n .
4 = Comm-D closeout.
5 = C o m m - C r e se r va t i o n a n d C o m m - D
closeout.
6 = Comm-C closeout and Comm-D
r e se r va t i o n .
7 = C o m m - C a n d C o m m - D c l o s e o u t s.
Reply Request subfield, sent when DI=7,
contains coding corresponding to the
r e q u e st e d B D S 2 co d e .
Reservation Status subfield, sent when DI=1,
r e q u e st s t r a n sp o n d e r t o r e p o r t r e se r va t i o n
status in the UM field. The codes are:
0 = N o r e q u e st .
1 = R e p o r t C o m m - B r e se r va t i o n st a t u s.
2 = R e p o r t C o m m - C r e se r va t i o n st a t u s.
3 = R e p o r t C o m m - D r e se r va t i o n st a t u s.
T a ct i ca l Message subfield, sent when DI=1
or 7 , c o n t a i n s c o d i n g f o r l i n k i n g t h e C o m m A m e ssa g e se g m e n t s. T h e co d e s a r e :
0 = N o A ct i o n .
1 = U n l i n ke d , P r i o r i t y.
2 = Unlinked, Acknowledge.
3 = U n l i n ke d , P r i o r i t y, A ckn o w l e d g e .
4 = L i n ke d 1 st S e g m e n t , S i n g l e A D S .
5 = L i n ke d 1 st S e g m e n t , S i n g l e A D S
P r i o r i t y.
6 = L i n ke d 1 st S e g m e n t , S i n g l e A D S
Acknowledge.
7 = L i n ke d 1 st S e g m e n t , S i n g l e A D S ,
P r i o r i t y, A ckn o w l e d g e .
8 = L i n ke d 1 st S e g m e n t , M u l t i p l e A D S .
9 = L i n ke d 1 st S e g m e n t , M u l t i p l e A D S ,
P r i o r i t y.
1 0 = L i n ke d 1 st S e g m e n t , M u l t i p l e A D S ,
Acknowledge.
1 1 = L i n ke d 1 st S e g m e n t , M u l t i p l e A D S ,
P r i o r i t y, A ckn o w l e d g e .
1 2 = S e co n d S e g m e n t .
13 = Third Segment.
14 = Final Segment.
1 5 = N o t A ssi g n e d .
O ve r vi e w o f F o r m a t D e f i n i t i o n s
T a b l e 3 ( co n t )
APPENDIX B
Page 15
Ja n 1 / 0 4
O PERATIO N MANUAL
TCAS- 201
NO. OF
BITS
BITS
POSITION
SL
3
9-11
UF
5
1-5
UM
6
14-19
X
Contains transponder status readouts in
replies DF=4, 5, 20, 21.
IDS
2
18-19
X
IIS
4
14-17
X
I d e n t i f i e r D e si g n a t o r su b f i e l d r e p o r t s t h e
t yp e o f r e se r va t i o n m a d e b y t h e i n t e r r o g a t o r
identified in IIS and corresponds with the
R S S su b f i e l d o f S D . A ssi g n e d co d i n g i s:
0 = No information available.
1 = C o m m - B r e se r va t i o n a ct i ve .
2 = C o m m - C r e se r va t i o n a ct i ve .
3 = C o m m - D r e se r va t i o n a ct i ve .
I n t e r r o g a t o r I d e n t i f i e r su b f i e l d r e p o r t s t h e
identity of the interrogator that has made a
m u l t i si t e r e se r va t i o n .
1
6
X
FIELD
UM
VS
SUB
FIELD
FORMATS
UP DOWN
X
X
CONTENT
Reports the current operating sensitivity
l e ve l o f t h e T C A S u n i t a n d i s a p a r t o f a i r air surveillance replies, DF=0, 16. The
co d e s a r e :
0 = N o T C A S se n si t i vi t y l e ve l r e p o r t e d .
1 = T C A S o p e r a t e s a t se n si t i vi t y l e ve l 1 .
2 = T C A S o p e r a t e s a t se n si t i vi t y l e ve l 2 .
3 = T C A S o p e r a t e s a t se n si t i vi t y l e ve l 3 .
4 = T C A S o p e r a t e s a t se n si t i vi t y l e ve l 4 .
5 = T C A S o p e r a t e s a t se n si t i vi t y l e ve l 5 .
6 = T C A S o p e r a t e s a t se n si t i vi t y l e ve l 6 .
7 = T C A S o p e r a t e s a t se n si t i vi t y l e ve l 7 .
NOTE: The SL field has no meaning for
a i r cr a f t w i t h R I = 0 ( n o o n - b o a r d
capability to generate resolution,
advisories).
The first field in all uplink formats is the
t r a n s m i s s i o n d e s c r i p t o r i n a l l i n t e r r o g a t i o n s.
I n d i ca t e s a i r cr a f t i s a i r b o r n e w h e n Z e r o o r
a i r cr a f t i s o n t h e g r o u n d w h e n O n e . V S i s a
part of DF=0, 16.
Overview of Format Definitions
T a b l e 3 ( co n t )
APPENDIX B
Page 16
Jan 1/04
O PERATIO N MANUAL
TCAS- 201
B5
0
0
1
1
B6
0
1
0
1
P
SP
0
B4
B3
B2
B1
0
0
0
0
0
0
0
1
A
Q
1
0
0
1
0
B
R
2
0
0
1
1
C
S
3
0
1
0
0
D
T
4
5
0
1
0
1
E
U
0
1
1
0
F
V
6
0
1
1
1
G
W
7
1
0
0
0
H
X
8
1
0
0
1
I
Y
9
Z
1
0
1
0
J
1
0
1
1
K
1
1
0
0
L
1
1
0
1
M
1
1
1
0
N
1
1
1
1
O
SP=SPACE code
6 - B i t C h a r a ct e r S e t f o r A I S S u b f i e l d
Table 4
APPENDIX B
Page 17
Ja n 1 / 0 4
O PERATIO N MANUAL
TCAS- 201
SRS OR TAS SUBFIELD VALUE
OCTAL
HEXADECIMAL
NUMBER OF SEGMENTS
100000
8000
1
140000
C000
2
160000
E000
3
170000
F000
4
174000
F800
5
176000
FC00
6
177000
FE00
7
177400
FF00
8
177600
FF80
9
177700
FFC0
10
177740
FFE0
11
177760
FFF0
12
177770
FFF8
13
177774
FFFC
14
177776
FFFE
15
177777
FFFF
16
Valid Values for SRS and TAS Subfields
Table 5
APPENDIX B
Page 18
Jan 1/04
O PERATIO N MANUAL
TCAS- 201
BINARY
OCTAL
DECIMAL
HEXADECIMAL
000
0
0
0
001
1
1
1
010
2
2
2
011
3
3
3
100
4
4
4
101
5
5
5
110
6
6
6
111
7
7
7
1000
10
8
8
1001
11
9
9
1010
12
10
A
1011
13
11
B
1100
14
12
C
1101
15
13
D
1110
16
14
E
1111
17
15
F
10000
20
16
10
N u m b e r S yst e m s C o n ve r si o n
Table 6
APPENDIX B
Page 19
Ja n 1 / 0 4
O PERATIO N MANUAL
TCAS- 201
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 .
APPENDIX B
Page 20
Jan 1/04
O PERATIO N MANUAL
TCAS- 201
APPENDIX C - AUXILIARY EQUIPMENT
Refer to 1-2-2, Figure 2 for connectors and
indicators.
1. ST O RAG E COMPARTMENT
Refer to Appendix C, Figure 1.
ITEM
ITEM
DESCRIPTION
Flat Antenna:
DESCRIPTION
RF antenna used with Test Set when power
a c c u r a c y i s m o s t c r i t i ca l .
Antenna Clamp Assembly:
U s e d w i t h A n t e n n a S h i e l d P l a t e t o co ve r
UUT Antenna not being tested.
Antenna Cable:
B N C t o B N C c o a x i a l c a b l e u s e d t o co n n e ct
F L A T A N T E N N A C o n n e ct o r t o A N T E N N A
C o n n e ct o r .
F l e xi b l e A n t e n n a :
RF monopole antenna used with Test Set
when power accuracy is not critical and a
d i r e ct c o n n e c t i o n i s n o t c o n v e n i e n t .
TCAS-201 Operator’s Guide:
Weatherproof guide used in the ramp
environment.
ac Power Cable:
Used to connect ac power from an external
so u r ce t o A C P W R C o n n e c t o r .
F u se :
Spare FUSE.
Antenna Shield Plate:
U se d w i t h A n t e n n a C l a m p A s s e m b l y t o
c o v e r U U T A n t e n n a n o t b e i n g t e st e d .
FUSE
TCAS-201
OPERATOR’S GUIDE
ANTENNA CLAMP
ASSEMBLY
S,
INC
01 ID
-2 GU
AS ’S
TC OR
AT
R
TEM
PE
O
SYS
.
FLEXIBLE
ANTENNA
G
G
AI
AI N 10
N
10 30M
90 H
M z
H
z
S/
N
dB
dB i
i
E
ANTENNA
CABLE
INC.
SYSTEMS,
FLAT ANTENNA
ST
TE
WER T RAFT
T
NO RC
R PO
AR
FO
, DOAT AI
ST
ION GHT LY
TO
VE
CT
RI CT .
CH.
MO ET
RU A UP RE ST
DI TE SWITING VEL, 6 FE
ST
OP
A IN TENNINTDER NNA AG D LE ARD
ST
ER
NN
W
AN . PO
TO
TE
A UN TE AV ROUNUP
AN HOLDTATENN S ANST
G
LY
ITCH G.
SWAGIN
1. ROANTE PRESER TE ATSLOW.
S) WER ER
DE W
TING A
2. PO ARTENNETER S POST AV
ST
M
3. AN(1.8 PRESER TE
DE W
4. PO
UP
AC POWER CABLE
ANTENNA SHIELD
PLATE
8507005
A u xi l i a r y E q u i p m e n t
Figure 1
APPENDIX C
Page 1
Ja n 1 / 0 4
O PERATIO N MANUAL
TCAS- 201
2. TRIPO D
3. ANTENNA SHIELD PROCEDURE
The tripod holds the Test Set Antenna during
st a t i o n a r y r a m p t e s t i n g .
Refer to Appendix C, Figure 2.
STEP
PROCEDURE
1.
P o s i t i o n A n t e n n a C l a m p A s s e m b l y i n si d e
the slot in the Antenna Shield Plate,
aligning captive screws into the
respective screw holes.
2.
Tighten captive screws.
3.
C o ve r U U T A n t e n n a w i t h A n t e n n a S h i e l d .
Loosen Thumbscrews if necessary.
NOTE:
4.
I t m a y b e n e ce ssa r y t o r e m o ve
U U T A n t e n n a G u a r d i f a cce ss t o
U U T A n t e n n a i s r e st r i ct e d .
Secure Antenna Shield by tightening
thumbscrews.
ANTENNA CLAMP ASSEMBLY
ANTENNA SHIELD
PLATE
CAPTIVE SCREW
THUMB SCREW
8107007
Antenna Shield
Figure 2
APPENDIX C
Page 2
Jan 1/04
O PERATIO N MANUAL
TCAS- 201
APPENDIX D - METRIC/BRITISH IMPERIAL CONVERSION TABLE
WITH NAUTICAL DISTANCE CONVERSIONS
TO
CONVERT:
INTO:
MULTIPLY
BY:
TO
CONVERT:
INTO:
MULTIPLY
BY:
cm
feet
0.03281
meters
feet
cm
inches
0.3937
meters
i n ch e s
feet
cm
m / se c
f t / se c
3.281
feet
meters
0.3048
m/sec
km/hr
3.6
f t / se c
km/hr
1.097
m/sec
miles/hr
2.237
ft/sec
knots
0.5921
miles
feet
ft/sec
miles/hr
0.6818
miles
km
miles
meters
0.3048
miles
nmi
0.8684
30.48
ft/sec
2
cm/sec
ft/sec
2
m/sec
2
2
30.48
3.281
39.37
5280
1.609
1609
grams
ounces
0.03527
m i l e s/ h r
f t / se c
1.467
inches
cm
2.54
miles/hr
km/hr
1.609
kg
pounds
2.205
miles/hr
knots
0.8684
psi
0.0703
nmi
feet
nmi
km
kg/cm
2
3281
6080.27
1.8532
km
feet
km
miles
0.6214
nmi
meters
km
nmi
0.5396
nmi
miles
1.1516
km / h r
ft/sec
0.9113
ounces
grams
28.34953
km/hr
knots
0.5396
pounds
kg
km/hr
miles/hr
0.6214
psi
kg/cm
knots
ft/sec
1.689
100 ft
km
3.048
knots
km/hr
1.8532
100 ft
miles
1.894
knots
miles/hr
1.1516
100 ft
nmi
1.645
1853.2
0.4536
2
0.0703
APPENDIX D
Page 1
Ja n 1 / 0 4
O PERATIO N MANUAL
TCAS- 201
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 .
APPENDIX D
Page 2
Jan 1/04
O PERATIO N MANUAL
TCAS- 201
APPENDIX E - TARGET ACQUISITION TIME PROBABILITY TABLE
The following table shows the probability of
t a r g e t a cq u i s i t i o n t i m e i n c r e a s i n g b y m o r e t h a n
a sp e ci f i e d t i m e ( i n a d d i t i o n t o t h e n o r m a l t w o
t o t h r e e s e c o n d s ) . T h e t a b l e i n d i c a t e s, f o r
e xa m p l e , t h e r e i s a 1 0 % p r o b a b i l i t y t h e t a r g e t
a cq u i si t i o n t i m e i n c r e a s e s b y m o r e t h a n t e n
se co n d s.
NOTE:
T h e t a b l e o n l y a p p l i e s w h e n t e st i n g
one UUT Antenna. Other UUT
Antennas are shielded, disabled or
out of the line of sight path with the
TCAS-201.
INCREASE IN
TARGET
ACQUISITION TIME
PROBABILITY
PERCENTAGE
>3 seconds
91%
>4 seconds
76%
>5 seconds
59%
>6 seconds
44%
>7 seconds
31%
>8 seconds
22%
>9 seconds
15%
>10 seconds
10%
>11 seconds
7%
>12 seconds
4%
>13 seconds
3%
>14 seconds
2%
>15 seconds
1%
>16 seconds
0.7%
>17 seconds
0.4%
>18 seconds
0.3%
>19 seconds
0.2%
>20 seconds
0.1%
T a r g e t A cq u i si t i o n T i m e P r o b a b i l i t y
Table 1
APPENDIX E
Page 1
Ja n 1 / 0 4
O PERATIO N MANUAL
TCAS- 201
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 .
APPENDIX E
Page 2
Jan 1/04
O PERATIO N MANUAL
TCAS- 201
APPENDIX F - ABBREVIATIONS
A
A
AA
AC
AC
ac
ACAS
ACS
A/D
ADC
ADLP
ADS
AIS
ALT
AP
AQ
ASCII
ATC
ATC
ATCRBS
ATE
ATTEN
AUTO
AVG
Amperes
Announced Address
Altitude Code
Alternating Current
Alternating Current
A i r b o r n e C o l l i s i o n A v o i d a n ce
System
Comm-A Capabilitiy Subfield
Analog to Digital
A n a l o g t o D i g i t a l C o n ve r t e r
A i r b o r n e D a t a L i n k P r o ce sso r
A-Definition Subfield
Comm-A Capability Subfield
Altitude
Address Parity
Acquisition Special
American National Standard
Code for Information
Interchange
Air Traffic Control
A T C R B S ( s c r e e n a b b r e vi a t i o n )
Air Traffic Control Radar
Beacon System
Automatic Test Equipment
Attenuation
Automatic
Average
B
BCS
BD
BDS
BIT
bps
BR
BT
Comm-B Capability Subfield
Comm-B Data
B-Definition Subfield
Built In Test
Bits per Second
Bridge Rectifier
Battery
C
C
CA
CC
ccw
CFS
CHAN
CHC
CLI
CLOS
cm
Cont
CPU
CTS
CVC
CW
cw
Celsius or Centigrade
Transponder Capability
Crosslink Capability
Counterclockwise
Continuation Subfield
Channel
C a n ce l H o r i z o n t a l R e s o l u t i o n
A d vi so r y
C o o r d i n a t i o n L o c k I n d i ca t o r
Closeout
-2
C e n t i m e t e r ( 1 0 M e t e r s)
Continued
Central Processing Unit
Clear to Send
Cancel Vertical Resolution
Advisory Complement
Continuous Wave
Clockwise
D
D/A
DABS
DAC
dB
dBi
dBm
2
dB W/m
DCD
DCXO
DELM
DF
DI
DMM
DPSK
DR
DSP
DSR
DTR
Digital to Analog
D i scr e t e A d d r e ss B e a co n
S yst e m
D i g i t a l t o A n a l o g C o n ve r t e r
Decibel
Decibels above isotropic
Decibels above one milliwatt
Decibels above one watt per
sq u a r e m e t e r
Data Carrier Detect
D i g i t a l l y C o m p e n s a t e d C r yst a l
O sci l l a t o r
Downlink Extended Length
Message
Downlink Format
Designator Identification
Digital Multimeter
D i f f e r e n t i a l P h a se S h i f t K e yi n g
Downlink Request
D i g i t a l S i g n a l P r o ce sso r
Data Set Ready
Data Terminal Ready
APPENDIX F
Page 1
Ja n 1 / 0 4
O PERATIO N MANUAL
TCAS- 201
L
E
ECS
ELM
EMC
EMI
ERP
ESB
ESD
EXT
E xt e n d e d C a p a b i l i t y
Subfield
Extended Length Message
Electromagnetic Compatibility
Electromagnetic Interference
Effective Radiated Power
E n co d e d S e n se B i t s ( n o w V S B )
Electrostatic Discharge
External
LCA
LCD
LCK
LED
LF
LO
LOS
LSB
LSD
Logic Cell Array
Liquid Crystal Display
Coordination Lock Subfield
Light Emitting Diode
Line Feed
Local Oscillator
L o cko u t S u b f i e l d
L e a st S i g n i f i ca n t B i t
L e a st S i g n i f i ca n t D i g i t
F
FCC
FPM
fpm
FREQ
FS
FT
Ft
Federal Communications
Commission
Feet Per Minute
Feet Per Minute
Frequency
Flight Status
Foot/Feet
Foot/Feet
G
GEN
GND
Generator
Ground
H
h
Hz
HRC
H e xa d e ci m a l
Hertz
Horizontal Resolution Advisory
Complement
I
ID
IDS
IFF
II
IIS
Identification
Identifier Designators Subfield
Identification Friend or Foe
Interrogator Identification
Interrogator Identification
Subfield
Input
Interrogation
Input/Output
IN
INTERR
I/O
K
KE
kg
kH z
km
kt
kt s
Control, ELM
3
Kilogram (10 Grams)
3
Kilohertz (10 Hertz)
3
Kilometer (10 meters)
Knots (Velocity)
Knots (Velocity)
M
m
MA
MAX
MB
MBS
MC
MD
ME
MEAS
MES
MHz
µs
MID
MIN
MPU
ms
MTB
MTE
MTL
MU
MV
Meters
M e ssa g e , C O M M - A
Maximum
M e ssa g e , C O M M - B
M u l t i si t e C O M M - B S u b f i e l d
Message, COMM-C
Message, COMM-D
M e ssa g e , C O M M - E
M e a su r i n g
M u l t i si t e E L M S u b f i e l d
6
Megahertz (10 Hertz)
-6
M i c r o s e c o n d ( 1 0 S e co n d s)
M o d e S A d d r e ss
Minimum
Microprocessing Unit
-3
M i l l i s e c o n d ( 1 0 S e co n d s)
Multiple Threat Bit
M u l t i p l e T h r e a t E n co u n t e r
Minimum Threshold Level
Message, COMM-U
M e ssa g e , C O M M - V
N
N
N/A
NC
ND
nm
nmi
No
ns
Numerical
N o t A p p l i ca b l e
C-Segment Number
D-Segment Number
Nautical Miles
Nautical Miles
Number
-9
N a n o s e c o n d ( 1 0 S e co n d s)
O
o
OUT
Ω
Octal
Output
Ohm
APPENDIX F
Page 2
Jan 1/04
O PERATIO N MANUAL
TCAS- 201
P
PC
PC
PC
PI
PLCS
PN
PPM
ppm
PR
PRF
PROM
psi
PWM
PWR
Personal Computer
Printed Circuit
Protocol
Parity/Interrogator Identity
P l a ce s
Part Number
Pulse Position Modulation
Parts per Million
Probability of Reply
P u l s e R e p e t i t i o n F r e q u e n cy
Programmable Read Only
Memory
P o u n d s p e r S q u a r e I n ch
Pulse Width Modulation
Power
S
SCOPE
SCPI
SD
Sec
SL
SLM
SLS
SPI
SQTR
SRQ
SRS
SSR
SYNC
R
RAM
RAC
RAT
RC
RCI
RCVD
RCVR
Ref
RF
RI
RL
RMS
ROM
RR
RRS
RSS
RTCA
RTS
RX
RXD
Random Access Memory
Resolution Advisory
Complement
Resolution Advisory
Termination
Reply Control
R e m o t e C o n t r o l I n t e r f a ce
Received
Receiver
Reference
Radio Frequency
Reply Information Air-to-Air
Reply Length
Root Mean Square
Read Only Memory
Reply Request
Reply Request Subfield
Reservation Status Subfield
Requirements and Technical
Concepts for Aviation
organization
Request to Sent
Receive
R e c e i ve D a t a
O sci l l o sco p e
Standard Commands for
P r o g r a m m a b l e I n st r u m e n t s
organization
S p e ci a l D e si g n a t o r
S e co n d
Sensitivity Level
S t a n d a r d L e n g t h M e ssa g e
S i d e - L o b e S u p p r e ssi o n
S p e ci a l I d e n t i f i e r P u l se
Squitter
S e r vi ce R e q u e st
S e g m e n t R e q u e st S u b f i e l d
S e co n d a r y S u r ve i l l a n ce R a d a r
S yn ch r o n o u s
T
TAS
TCAS
TID
TMS
Trig
TTI
TTL
TX
TXD
T r a n sm i ssi o n A ckn o w l e d g m e n t
Subfield
T r a f f i c A l e r t a n d C o l l i si o n
A vo i d a n ce S yst e m
Threat Identity Data
Tactical Message Subfield
Trigger
T h r e a t T yp e I n d i ca t o r
T r a n si st o r - T r a n si st o r L o g i c
T r a n sm i t
T r a n sm i t D a t a
U
UDS
UELM
UF
UM
UUT
U-Definition Subfield
Uplink Extended Length
Message
Uplink Format
Utility Message
U n i t U n d e r T e st
V
V
VAC
VCO
Vdc
VDS
VERS
VRAM
VRC
Vrms
VS
VSB
VSWR
Volt
V o l t s, A l t e r n a t i n g C u r r e n t
V o l t a g e C o n t r o l l e d O sci l l a t o r
Volts, Direct Current
V-Definition Subfield
V e r si o n
V i d e o R a n d o m A cce ss M e m o r y
Vertical Resolution Advisory
Complement
Volts Root Mean Square
V e r t i ca l S t a t u s
V e r t i ca l S e n se B i t s
V o l t a g e S t a n d i n g W a ve R a t i o
APPENDIX F
Page 3
Ja n 1 / 0 4
O PERATIO N MANUAL
TCAS- 201
W
W
W-S
Watt
Whisper-Shout
X
XMTR
Xon/Xoff
XPDR
Transmitter
Software Handshake
Transponder
APPENDIX F
Page 4
Jan 1/04
O PERATIO N MANUAL
TCAS- 201
INDEX
Abbreviations
AC Power Requirements
AIS Subfield, 6-Bit Character Set
Antenna Shield Procedure
ARA: Field Valid Data
ATCRBS Operation
Monitor
Reply Test
Auxiliary Equipment
Battery
Charging
Operation
Recharging
Broadcast Monitor
CA: Field Valid Data
CHC: Field Display Data
COMM Connector (J10053) Pin-Out
Table
Connector Pin-Out Tables
Controls, Connectors and Indicators
Flat Antenna
Front Panel
Conversion Table
CVC: Field Display Data
Data Storage
Diagnostics
Screen
Signal Definition
App. F
1-2-1, p 2
App.B, p 17
App. C, p 2
1-2-4, p 17
1-2-4, p 19
1-2-4, p 13
App. C
Number Systems Conversion
1-2-1, p 1
1-2-1, p 1
1-3-1, p 4
1-2-1, p 3
1-2-4, p 22
1-2-4, p 17
1-2-4, p 23
App. A, p 1
App. A, p 1
1-2-2, p 2
1-2-2, p 5
1-2-2, p 3
App. D
1-2-4, p 23
1-2-4,
1-2-3,
1-2-3,
1-2-3,
p
p
p
p
8
3
3
4
ESB: Field Display Data
External Cleaning
1-2-4, p 24
1-2-1, p 3
FAA Requirements
Flat Antenna
Format Definitions, Overview of
Functional Capabilities
Fuse Ratings, Specified
Fuse Requirements
1-2-1,
1-2-2,
App. B,
1-1-1,
1-2-1,
1-3-1,
General Description and Capabilities
General Operating Procedures
Mode S Message Content
Mode S Operation
Monitor
Reply Test
Monitor
ATCRBS Operation
Sample Screens
Mode S Operation
Sample Screens
p
p
p
p
p
p
2
5
4
1
2
4
App. B, p 1
1-2-4,
1-2-4,
1-2-4,
1-2-4,
1-2-4,
1-2-4,
1-2-4,
p
p
p
p
p
p
p
22
15
19
19
19
22
22
App. B, p 19
Operation
Operational Environmental
Considerations
Overview of Format Definitions
Overview of Mode S Interrogation
Formats
Overview of Mode S Reply Formats
1-2-1, p 1
App. B, p 2
App. B, p 3
Performance Evaluation
Power Requirements
Power Requirements
Power & Frequency
Sample Screens
Pulse Characteristics
1-2-3, p 1
1-3-1, p 4
1-2-1, p 2
1-2-4, p 25
1-2-4, p 25
1-3-1, p 1
RAC: Field Valid Data
RAM Reset
Repacking Procedure
Reply Characteristics
Reply Formats, Mode S
Reply Test
ATCRBS Operation
Sample Screens
Mode S Operation
Sample Screens
RF Signal
RI: Field Valid Data
Acquisition
Tracking
1-2-4, p 18
1-2-4, p 8
1-4-1, p 1
1-3-1, p 1
App. B, p 3
1-2-4, p 13
1-2-4, p 13
1-2-4, p 13
1-2-4, p 15
1-2-4, p 15
1-2-4, p 1
1-3-1, p 4
App. B, p 4
1-2-4, p 16
1-2-4, p 17
1-1-1, p 1
1-2-4, p 1
HRC: Field Display Data
1-2-4, p 24
Installation
I/O Connectors
Interrogation Formats, Mode S
Interrogations
Intruder Flight Pattern, Sample
Altitude Factor
Range Factor
1-2-1, p
App.
App. B, p
1-3-1, p
1
A
2
3
1-2-4, p 11
1-2-4, p 11
INDEX
Page 1
Ja n 1 / 0 4
O PERATIO N MANUAL
TCAS- 201
Safety
Safety Precautions
Scenario Test
Default Screen
Operation From Start-Up Screen
Sample Screens
Self Test
Error Code Definitions
Sample Screens
Setup
Setup #1 Menu
Screens
Setup #2 Menu
Screen
Shipping
Signal Formats
Signal Generator
SL: Field Valid Data
Specifications
Specified Fuse Ratings
SRS and TAS Subfields, Valid
Values for
Start-Up
Storage
Storage Compartment
Surveillance Monitor
Target Acquisition Time Probability
Table
TAS Subfields, Valid Values for
SRS and
TCAS I/TCAS II
Test Antenna
Test Locations, Recommended
Test Procedure, Recommended
Tripod
UUT Measurements
Valid Values for SRS and TAS
Subfields
VRC: Field Display Data
Whisper-Shout Monitor
1-3-1, p 4
1-2-1, p 1
1-2-4, p 9
1-2-4, p 27
1-2-4, p 2
1-2-4, p 9
1-2-3, p 1
1-2-3, p 2
1-2-3, p 2
1-2-4, p 2
1-2-4, p 2
1-2-4, p 2
1-2-4, p 6
1-2-4, p 6
1-4-1, p 1
App. B, p 1
1-3-1, p 1
1-2-4, p 16
1-3-1, p 1
1-2-1, p 2
App. B, p 18
1-2-4, p 1
1-5-1, p 1
App. C, p 1
1-2-4, p 22
App. E
App. B, p 18
1-1-1, p 1
1-2-4, p 7
1-3-1, p 4
1-2-4, p 27
1-2-4, p 27
App. C, p 2
1-3-1, p 3
App. B, p 18
1-2-4, p 23
1-2-4, p 19
INDEX
Page 2
Jan 1/04
O PERATIO N MANUAL
TCAS- 201
FOR QUALIFIED SERVICE
PERSONNEL ONLY
BATTERY/VOLTAGE INSTRUCTIONS
O PERATIO N MANUAL
TCAS- 201
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 .
O PERATIO N MANUAL
TCAS- 201
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.
WARNING: USING THIS EQUIPMENT IN A MANNER NOT SPECIFIED BY THE ACCOMPANYING
DOCUMENTATION MAY IMPAIR THE SAFETY PROTECTION PROVIDED BY THE EQUIPMENT.
CASE, COVER OR PANEL REMOVAL
Removing the Chassis Assembly from the Case Assembly 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 OR DC TERMINAL: Terminal that may supply or be supplied with ac or dc voltage.
DC TERMINAL: Terminal that may supply or be supplied with dc voltage.
AC TERMINAL: Terminal that may supply or be supplied with ac or alternating voltage.
SWITCH ON/OFF (Push-Push): AC line power to the device is connected ON or disconnected OFF.
EQUIPMENT GROUNDING PRECAUTION
Improper grounding of equipment can result in electrical shock.
USE OF PROBES
Check specifications for the maximum voltage, current and power ratings of any connector on the Test Set
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, 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.
O PERATIO N MANUAL
TCAS- 201
WARNING: THE TCAS-201 USES A SEALED-LEAD-BATTERY PACK. THE FOLLOWING WARNINGS
CONCERNING LEAD-ACID BATTERIES MUST BE HEEDED:
DO NOT RECHARGE OUTSIDE THE TCAS-201.
DO NOT CRUSH, INCINERATE OR DISPOSE OF IN NORMAL WASTE.
DO NOT SHORT CIRCUIT OR FORCE DISCHARGE AS THIS MIGHT CAUSE THE BATTERY
TO VENT, OVERHEAT OR EXPLODE.
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:
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.
WHEN REMOVING DEVICES FROM THEIR CONTAINERS, GROUND THE HAND BEING USED
WITH A CONDUCTIVE WRISTBAND.
TIPS OF SOLDERING IRONS AND/OR ANY TOOLS USED MUST BE GROUNDED.
DEVICES MUST NEVER BE INSERTED INTO NOR REMOVED FROM CIRCUITS WITH
POWER ON.
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 BUILTIN POWER SOURCE, SUCH AS A BATTERY, BEFORE LAYING PC BOARDS ON A
CONDUCTIVE MAT OR STORING IN A CONDUCTIVE BAG.
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 ENSURE COMPLIANCE WITH
INSTRUCTIONS IN FAA CIRCULAR AC 170-6C, DATED FEBRUARY 19, 1981.
O PERATIO N MANUAL
TCAS- 201
FOR QUALIFIED SERVICE PERSONNEL ONLY
Refer to Figure 1.
BATTERY REPLACEMENT
STEP
PROCEDURE
STEP
PROCEDURE
1.
Verify TCAS-201 is Off and not
co n n e c t e d t o a c p o w e r .
11. Reinsert Chassis Assembly into Case
A s s e m b l y.
2.
Remove 12 securing screws and lift
C h a s s i s A s s e m b l y f r o m C a s e A s s e m b l y.
12. Reinstall 12 securing screws.
3.
Pull out battery connector from
underneath middle of Chassis Assembly
and disconnect.
4.
Remove two screws from bottom of
Chassis Assembly and remove PC board
retainer.
5.
Remove two screws from bottom of
C h a ss i s A s s e m b l y a n d r e m o v e b a t t e r y
cover.
6.
Pull ejector strap to remove battery from
Chassis Assembly.
WARNING:
CAUTION:
DISPOSE OF OLD
BATTERY ACCORDING TO
STANDARD SAFETY
PROCEDURES.
REPLACE ONLY WITH
THE BATTERY SPECIFIED
BY AEROFLEX. DO NOT
ATTEMPT TO INSTALL A
NON-RECHARGEABLE
BATTERY.
CAUTION:
REPLACING NYLON
WASHERS IS
RECOMMENDED TO
MAINTAIN WATER
RESISTANCE CAPABILITY
WHEN REINSTALLING
CHASSIS ASSEMBLY INTO
CASE ASSEMBLY.
LINE SUPPLY SWITCH
STEP
PROCEDURE
1.
Verify TCAS-201 is Off and not
connected to ac power.
2.
Remove 12 securing screws and lift
C h a s s i s A s s e m b l y f r o m C a s e A s s e m b l y.
3.
Position Chassis Assembly for access to
L i n e S u p p l y S w i t ch .
4.
I f p o w e r so u r ce i s 1 0 0 t o 1 2 0 V A C a t
6 0 H z, se t L i n e S u p p l y S w i t ch t o 1 1 5 .
I f p o w e r so u r ce i s 2 2 0 t o 2 4 0 V A C a t
5 0 H z, se t L i n e S u p p l y S w i t ch t o 2 3 0 .
7.
I n s t a l l n e w b a t t e r y i n f r o n t o f e j e ct o r
st r a p .
5.
Reinsert Chassis Assembly into Case
A s s e m b l y.
8.
Reinstall battery cover and two battery
c o v e r s c r e w s i n C h a s s i s A s s e m b l y.
6.
Reinstall 12 securing screws.
9.
Reinstall PC board retainer and two PC
board retainer screws in Chassis
Assembly.
1 0 . C o n n e c t b a t t e r y c o n n e c t o r a n d t u ck b a ck
underneath middle of Chassis Assembly.
CAUTION:
REPLACING NYLON
WASHERS IS
RECOMMENDED TO
MAINTAIN WATER
RESISTANCE CAPABILITY
WHEN REINSTALLING
CHASSIS ASSEMBLY INTO
CASE ASSEMBLY.
Page 1
Ja n 1 / 0 4
O PERATIO N MANUAL
TCAS- 201
SECURING SCREW
R
P
TO
AU ST
TE
LF
SE ST
TE
/
N
L
R VID
S
E
G
O
AR
H
M
C
R
EP
LY
BATTERY CONNECTOR
R
R
1
IN
R
TE
-20
AS
BATTERY
TC
A
R
PW ST
TE
O
R
U
O
ST
P
TU
SE
P
C
LE
SE
T
LF
SE ST
TE
T
SE NT
O
C
EW
SL
FU
AC
CHASSIS ASSEMBLY
1/2
MA WAT
X T
BATTERY COVER
PC BOARD
RETAINER
PC BOARD
RETAINER
SCREW
BATTERY
COVER
SCREW
CASE
ASSEMBLY
EJECTOR STRAP
LINE SUPPLY SWITCH
B
115V
BATTERY CONNECTOR
DETAIL
A
DETAIL
B
8507025
B a t t e r y R e m o v a l a n d L i n e S u p p l y S w i t ch L o ca t i o n
Figure 1
Page 2
Jan 1/04
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] (21) 6282 8001
Fax: [+86] (21) 6282 8002
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Fax: [+1] (316) 522 1360
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Our passion for performance is defined by three
attributes represented by these three icons:
solution-minded, performance-driven, customer-focused.