2001A
200KHz Function Generator
Instruction Manual
WARRANTY
Global Specialties certifies that all products manufactured conform
to published specifications and are free from defects in materials
and workmanship for a period of Three (3) years from the date of
delivery when used under normal operating conditions and within
the service conditions for which they were furnished.
The obligation of Global Specialties arising from a Warranty claim
shall be limited to repairing, or at its option, replacing without charge,
any product which in Global Specialties's sole opinion proves to be
defective within the scope of the Warranty.
Global Specialties must be notified in writing of the defect or
nonconformity within the Warranty period and the affected product
returned to Global Specialties within (30) days after discovery of
such defect or nonconformity.
Although Quick Servicing Guidelines are provided in the manual, the
unit doesn't contain any user serviceable parts. Global Specialties
shall have no responsibility hereunder for any defect or damage
caused by improper storage, improper installation, unauthorized
modification, neglect, inadequate maintenance, accident or for any
product which has been repaired or altered by anyone other than
Global Specialties.
EXCLUSION OF OTHER WARRANTIES
The Warranty described above is Buyer's sole and exclusive remedy
and no other warranty, whether written or oral, is expressed or
implied. Global Specialties specifically desclaims the implied warranties
of merchantability and fitness for a particular purpose. No statement,
representation, agreement, or understanding, oral or written, made
by an agent, distributor, representative, or employee of Global
Specialties, which is not contained in the foregoing Warranty will be
binding upon Global Specialties, unless made in writing and executed
by an authorized Global Specialties employee. Under no circumstances
shall Global Specialties be liable for any direct, indirect, special,
incidental, or consequential damages, expenses, losses, or delays
(including loss of profits) based on contract, tort, or any legal theory.
MODEL NO.
:
2001A
SR. NO.
:
.........................................
Contents
Section
Description
Section 1
General Description
Page No.
1
GENERAL DESCRIPTION
1
1.1
Introduction
1
1.2
Applications
1
1.3
Specifications
1
1.4
Accessories
2
2
INSTALLATION
3
2.1
Inspection
3
2.2
Power Requirements
3
2.3
Safety Considerations
3
3
OPERATION
4
3.1
Front Panel Controls
4
3.2
Rear Panel Controls
5
3.3
Precautions
6
3.4
Operating Procedure
6
4
MAINTENANCE
8
4.1
Maintenance
8
4.2
Servicing
8
5
CIRCUIT DIAGRAMS
9
6
MANUAL CHANGES
14
1.1
INTRODUCTION
The Model 2001A is a very useful instrument for any test
requirement. It is a easy to use, compact 0.2Hz to 200KHz
Function Generator.
This manual contains information pertaining to the specifications,
installation and operation of 200KHz Function Generator
Model 2001A.
1.2
APPLICATIONS
The function generator can be used to test the frequency
response of low frequency amplifiers, attenuators, filters, etc
besides being a source of the most commonly used waveforms.
TTL output is provided to synchronise other circuitry or for
direct use with logic circuits. SWEEP IN terminal can be used
to sweep the output frequency using external voltage.
1.3
SPECIFICATIONS
FUNCTION GENERATOR
Waveform
: Sine, Triangle, Square.
Frequency Range
: 0.2Hz to 200KHz in 6 decade ranges.
Frequency
: ±5% of the setting at 10Hz, 100Hz,
Indication Accuracy
1KHz & 10KHz spot.
Function Out
: 1mV to 10V p-p (with 4 selectable
ranges; into open circuit).
TTL Out
: Standard TTL level squarewave.
Rise/Fall Time : <25ns.
DC Offset
: ±5V DC into open circuit.
AC (signal) + DC (offset) =
±10V p-p open circuit
±5V p-p into 600 ohms.
Level Fine
: 20dB variable (approx.).
1
Level Ranges
:
Sine wave Distortion :
Squarewave
:
Triangle Linearity
Sweep Input
Sweep Range
:
:
:
Input Impedance
:
GENERAL
Power
Consumption
Dimensions (mm)
:
:
:
Weight
1.4
ACCESSORIES
1. BNC to BNC
2. Operation Manual
3. Power Cord
:
1mV - 10mV p-p,
10mV - 100mV p-p,
100mV - 1V p-p &
1V p-p - 10V p-p.
<2% upto 100KHz (<1% typical)
<3% above 100KHz.
Time symmetry : ±1.5% (typical <1%)
Rise/Fall Time : <100ns
(into 600 ohms +20pf).
Better than 1%.
0 to +10V DC.
100:1 approx. (For external input at
SWEEP IN).
30K ohms approx.
115 / 230V AC ±10%,47- 63Hz.
5VA.
245 (W) x 76 (H) x 185 (D) mm
(approx.).
9½” x 3” x 7¼”
2 Kg. / 4.5 lbs (approx.).
-
2
1
1
1
Section 2
Installation
2.1
INSPECTION
The instrument is packed in a corrugated sheet box. As soon
as the unit is received, carefully open the box and inspect it
for any damage that may have occurred during transit. Save
all packing material. If any damage is found, notify the
carriers and our authorised representatives or ourselves
immediately. Also check whether all the specified accessories
are present.
2.2
POWER REQUIREMENTS
The instrument operates over a nominal 115V ±10%, 60Hz or
230V AC ±10% 50Hz AC line. A power cord has been provided
to connect the instrument to proper source.
2.3
SAFETY CONSIDERATIONS
2.3.1 Prior to applying power to the instrument, ensure that earth is
extended to the mains socket.
Intentional interruption of the grounding system, by use of
two-wire plug adapters or two wire extension cords must be
considered an unsafe practice.
2.3.2 Be sure that only correct fuse with proper V & A ratings is
installed for replacement purposes. INCORRECT FUSE
RATING CAN RESULT IN FIRE &/OR SERIOUS DAMAGE
OR HARM TO HUMAN LIFE & PROPERTY.
3
Section 3
Operation
3.1
6. LEVEL FINE
This is a continuously variable level control with approx.
20dB range.
7. DC OFFSET
Zero when feature not selected, ±5V DC into open circuit
when selected.
FRONT PANEL CONTROLS
The front panel controls are functionally grouped and clearly
designated for ease of operation. Their functions are described
below :
8. TTL OUT CONNECTOR
Square wave output (TTL) is available at this connector.
The TTL signal is in phase with function output.
1. FREQUENCY DIAL
This is frequency setting with a calibrated dial. The output
frequency is multiplication of the reading on dial and
FREQ. MULT (Frequency multiplier) setting.
9. SWEEP IN
DC voltage input to control function generator frequency
(VCG). Input voltage should be with range of 0 to ±10V
DC.
2. FREQ. MULT. SWITCH
This switch selects the desired frequency range of the
function generator, in decades.
3. FUNCTION SWITCH
Selects Sine, Triangle or Square wave output of the
Function Generator. The TTL output is not affected by this
switch position.
4. LEVEL RANGE
This is 4 position output attenuator switch. The ranges
from 1mV - 10mV, 10mV - 100mV, 100mV - 1V & 1V - 10V
p-p can be selected.
5. OUTPUT CONNECTOR
This is a BNC connector for the function output.
10. POWER ON LED
This LED indicate that power is on.
3.2
REAR PANEL CONTROLS
1. POWER ON/OFF SWITCH
The Function Generator can be turned ON/OFF by this
rear panel switch.
2. FUSE
This is a fuse in series with mains supply (for 230V 100mA & for 115V - 250mA).
Fig. 3.1 Front Panel Controls
Fig. 3.2 Rear Panel Controls
4
5
3. MAINS SELECTOR
This switch select the mains input as either 115V or 230V.
Factory set to 115V.
4. MAINS IN
This is the AC mains input to the Function Generator.
Power input required is 115V ±10%, 60Hz or 230V ±10%,
50Hz.
5. EARTH TERMINAL
This terminal for connection of external earth to the
instrument.
3.3
Note :
1) To get full sweep range from DC voltage input applied at
SWEEP IN terminal ensure frequency dial at minimum
position for 0 to +10V input and keep frequency dial at
maximum position for 0 to -10V input. A bipolar ac signal
will produce a sweep up & down from the set frequency.
2) Total sweep range is function of frequency dial position
and input voltage at SWEEP IN terminal.
3) Frequency dial sweep range is 10:1 while frequency
sweep range of 100:1 is possible by means of external
sweep input 0 to ±10V as per specification given above.
PRECAUTIONS
To obtain the optimum performance of the 2001A, the following
procedure should be adopted.
1. Select a location free from dust and humidity.
2. Do not operate the instrument where mechanical vibrations
are excessive or near a instrument which generates
strong electric or magnetic fields.
3. Although the output is short circuit protected, DO NOT
intentionally short the output.
3.4
OPERATING PROCEDURE
After power ON, set RANGE switch to desired frequency
range. The frequency can be set by using the frequency dial.
The function switch selects the desired waveform.
The generator output level is set by LEVEL FINE control and
LEVEL RANGE. The RANGE control directly indicates the
output level in p-p.
The variable LEVEL FINE control has a range of approximate
20dB.
The TTL output is available at all times in phase with the
Function generator output. This can be used for various
applications like trigerring an oscilloscope sweep or as a
independent output to measure the frequency more accurately
on a Frequency counter or directly interfacing to digital
circuits.
6
7
Section 4
Maintenance
4.1
Section 5
Circuit Diagrams
MAINTENANCE
The instrument has a rugged mechanical construction and will
withstand normal handling and wear easily. As such, the unit
needs very little maintenance. The unit may be cleaned with
a soft dry cloth. No solvents should be used to clean the unit.
While operating the unit, make sure that air circulation around
the unit is not obstructed and the slits for ventilation are not
closed.
Every time you change a fuse, make sure that fuse is of proper
type & rating.
4.2
SERVICING
The unit has no user servicable parts. So get the unit serviced
from GLOBAL SPECIALTIES only.
We suggest the following procedure while returning the unit
for service :
To ensure safe handling, preserve original packing material
and use it.
Call Global Specialties Customer Service at 1-800-572-1028
& get a RMA no. Be sure to attach a label to the unit, specifying
the owner and the fault observed with a brief description.
Fig. 5.1 Function & Range Selection Circuit
8
9
Fig. 5.2 Osc. & Function Generator Circuit
Fig. 5.3 100KHz Function Generator Output Amp. Circuit
10
11
Fig. 5.4 Sine to Square Convertor Circuit
Fig. 5.5 Power Supply Circuit
12
13
Section 6
Manual Changes
14
SERVICE AND WARRANTY INFORMATION
For up-to-date product information, please visit www.globalspecialties.com.
For instructions on how to obtain a return merchandise authorization number (RMA),
please visit our website, or call our customer service department.
GLOBAL SPECIALTIES
22820 Savi Ranch Parkway
Yorba Linda, CA 92887
800-572-1028
globalspecialties.com
Global Specialties will service and repair this instrument free of charge for a period of 3
full years, subject to the warranty conditions below.
WARRANTY
Global Specialties warrants the PB-503 to be free from defective material or
workmanship for a period of 3 full years from date of original purchase. Under this
warranty, Global Specialties is limited to repairing the defective device when returned to
the factory, shipping charges prepaid, within 3 full years from date of original purchase.
Units returned to Global Specialties that have been subject to abuse, misuse, damage
or accident, or have been connected, installed or adjusted contrary to the instructions
furnished by Global Specialties, or that have been repaired by unauthorized persons will
not be covered by this warranty.
Global Specialties reserves the right to discontinue models, change specifications, price
or design of this device at any time without notice and without incurring any obligation
whatsoever.
The purchaser agrees to assume all liabilities for any damages and/or bodily injury
which may result from the use or misuse of this device by the purchaser, his employees,
or agents.
This warranty is in lieu of all other representations or warranties expressed or implied
and no agent or representative of Global Specialties is authorized to assume any other
obligation in connection with the sale and purchase of this device.
All rights reserved. No Part of this book shall be reproduced, stored in a retrieval
system, or transmitted by any means, electronic, mechanical, photocopying recording,
or otherwise, without written permission from the publisher. No patent liability is
assumed with respect to the use of the information contained herein. While every
precaution has been taken in the preparation of this book, the publisher assumes no
responsibility for errors or omissions. Neither is any liability assumed for damages
resulting from the use of the information contained herein.