SERVICE MANUAL
AUTORANGING
SYSTEM DC POWER SUPPLY
AGILENT MODELS 6030A, 6031A,
6032A and 6035A
FOR INSTRUMENTS WITH SERIAL NUMBERS
Agilent Model 6030A; Serials US38320301 and above
Agilent Model 6031A; Serials US38310376 and above
Agilent Model 6032A; Serials US38321026 and above
Agilent Model 6035A; Serials US38320281 and above
For instruments with higher serial numbers, a change page may be included.
Agilent Part No. 5959-3344
Microfiche Part No. 5959-3345
5
Printed in USA
September, 2000
CERTIFICATION
Agilent Technologies certifies that this product met its published specifications at time of shipment from the factory. Agilent
Technologies further certifies that its calibration measurements are traceable to the United States National Bureau of
Standards, to the extent allowed by the Bureau's calibration facility, and to the calibration facilities of other International
Standards Organization members.
WARRANTY
This Agilent Technologies hardware product is warranted against defects in material and workmanship for a period of three
years from date of delivery. Agilent Technologies software and firmware products, which are designated by Agilent
Technologies for use with a hardware product and when properly installed on that hardware product, are warranted not to
fail to execute their programming instructions due to defects in material and workmanship for a period of 90 days from date
of delivery. During the warranty period Agilent Technologies will, at its option, either repair or replace products which
prove to be defective. Agilent Technologies does not warrant that the operation of the software, firmware, or hardware shall
be uninterrupted or error free.
For warranty service, with the exception of warranty options, this product must be returned to a service facility designated
by Agilent Technologies. Customer shall prepay shipping charges by (and shall pay all duty and taxes) for products returned
to Agilent Technologies for warranty service. Except for products returned to Customer from another country, Agilent
Technologies shall pay for return of products to Customer.
Warranty services outside the country of initial purchase are included in Agilent Technologies product price, only if
Customer pays Agilent Technologies international prices (defined as destination local currency price, or U.S. or Geneva
Export price).
If Agilent Technologies is unable, within a reasonable time to repair or replace any product to condition as warranted, the
Customer shall be entitled to a refund of the purchase price upon return of the product to Agilent.Technologies.
LIMITATION OF WARRANTY
The foregoing warranty shall not apply to defects resulting from improper or inadequate maintenance by the Customer,
Customer-supplied software or interfacing, unauthorized modification or misuse, operation outside of the environmental
specifications for the product, or improper site preparation and maintenance. NO OTHER WARRANTY IS EXPRESSED
OR IMPLIED. AGILENT TECHNOLOGIES. SPECIFICALLY DISCLAIMS THE IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
EXCLUSIVE REMEDIES
THE REMEDIES PROVIDED HEREIN ARE THE CUSTOMER'S SOLE AND EXCLUSIVE REMEDIES. AGILENT
TECHNOLOGIES SHALL NOT BE LIABLE FOR ANY DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR
CONSEQUENTIAL DAMAGES, WHETHER BASED ON CONTRACT, TORT, OR ANY OTHER LEGAL THEORY.
ASSISTANCE
The above statements apply only to the standard product warranty. Warranty options, extended support contracts, product
maintenance agreements and customer assistance agreements are also available. Contact your nearest Agilent
Technologies Sales and Service office for further information on Agilent Technologies' full line of Support Programs.
2
SAFETY SUMMARY
The following general safety precautions must be observed during all phases of operation, service and repair of this
instrument. Failure to comply with these precautions or with specific warnings elsewhere in this manual violates safety
standards of design, manufacture, and intended use of the instrument. Agilent Technologies Inc. assumes no liability for the
customer's failure to comply with these requirements.
BEFORE APPLYING POWER.
Verify that the product is set to match the available line voltage and the correct fuse is installed.
GROUND THE INSTRUMENT.
This product is a Safety Class 1 instrument (provided with a protective earth terminal). To minimize shock hazard, the instrument chassis
and cabinet must be connected to an electrical ground. The instrument must be connected to the ac power supply mains through a threeconductor power cable, with the third wire firmly connected to an electrical ground (safety ground) at the power outlet. For instruments
designed to be hard wired to the ac power lines (supply mains), connect the protective earth terminal to a protective conductor before any
other connection is made. Any interruption of the protective (grounding) conductor or disconnection of the protective earth terminal will
cause a potential shock hazard that could result in personal injury. If the instrument is to be energized via an external autotransformer for
voltage reduction, be certain that the autotransformer common terminal is connected to the neutral (earth pole) of the ac power lines
(supply mains).
INPUT POWER MUST BE SWITCH CONNECTED.
For instruments without a built-in line switch, the input power lines must contain a switch or another adequate means for disconnecting
the instrument from the ac power lines (supply mains).
DO NOT OPERATE IN AN EXPLOSIVE ATMOSPHERE.
Do not operate the instrument in the presence of flammable gases or fumes.
KEEP AWAY FROM LIVE CIRCUITS.
Operating personnel must not remove instrument covers. Component replacement and internal adjustments must be made by qualified
service personnel. Do not replace components with power cable connected. Under certain conditions, dangerous voltages may exist even
with the power cable removed. To avoid injuries, always disconnect power, discharge circuits and remove external voltage sources before
touching components.
DO NOT SERVICE OR ADJUST ALONE.
Do not attempt internal service or adjustment unless another person, capable of rendering first aid and resuscitation, is present.
DO NOT EXCEED INPUT RATINGS.
This instrument may be equipped with a line filter to reduce electromagnetic interference and must be connected to a properly grounded
receptacle to minimize electric shock hazard. Operation at the line voltage or frequencies in excess of those stated on the data plate may
cause leakage currents in excess of 5.0mA peak.
SAFETY SYMBOLS.
Instruction manual symbol: the product will be marked with this symbol when it is necessary for the user to refer to the
instruction manual (refer to Table of Contents) .
Indicates hazardous voltages.
Indicate earth (ground) terminal.
The WARNING sign denotes a hazard. It calls attention to a procedure, practice, or the like, which, if not correctly
performed or adhered to, could result in personal injury. Do not proceed beyond a WARNING sign until the
indicated conditions are fully understood and met.
The CAUTION sign denotes a hazard. It calls attention to an operating procedure, or the like, which, if not correctly
performed or adhered to, could result in damage to or destruction of part or all of the product. Do not proceed beyond
a CAUTION sign until the indicated conditions are fully understood and met.
DO NOT SUBSTITUTE PARTS OR MODIFY INSTRUMENT.
Because of the danger of introducing additional hazards, do not install substitute parts or perform any unauthorized modification to the
instrument. Return the instrument to an Agilent Technologies Sales and Service Office for service and repair to ensure that safety features
are maintained.
Instruments which appear damaged or defective should be made inoperative and secured against unintended operation until they can be
repaired by qualified service personnel.
3
Safety Symbol Definitions
Symbol
Description
Symbol
Description
Direct current
Terminal for Line conductor on permanently
installed equipment
Alternating current
Caution, risk of electric shock
Both direct and alternating current
Caution, hot surface
Three-phase alternating current
Caution (refer to accompanying documents)
Earth (ground) terminal
In position of a bi-stable push control
Protective earth (ground) terminal
(Intended for connection to external
protective conductor.)
Out position of a bi-stable push control
Frame or chassis terminal
On (supply)
Terminal for Neutral conductor on
permanently installed equipment
Off (supply)
Terminal is at earth potential
(Used for measurement and control
circuits designed to be operated with
one terminal at earth potential.)
Standby (supply)
Units with this symbol are not completely
disconnected from ac mains when this switch is
off. To completely disconnect the unit from ac
mains, either disconnect the power cord or have
a qualified electrician install an external switch.
Printing History
The edition and current revision of this manual are indicated below. Reprints of this manual containing minor corrections
and updates may have the same printing date. Revised editions are identified by a new printing date. A revised edition
incorporates all new or corrected material since the previous printing date. Changes to the manual occurring between
revisions are covered by change sheets shipped with the manual. Also, if the serial number prefix of your power supply is
higher than those listed on the title page of this manual, then it may or may not include a change sheet. That is because even
though the higher serial number prefix indicates a design change, the change may not affect the content of the manual.
Edition 1
Edition2
June, 1991
September, 2000
© Copyright 1991, 2000 Agilent Technologies, Inc.
This document contains proprietary information protected by copyright. All rights are reserved. No part of this document
may be photocopied, reproduced, or translated into another language without the prior consent of Agilent Technologies, Inc.
The information contained in this document is subject to change without notice.
4
TABLE OF CONTENTS
Introduction ............................................................................................................................................................................ 9
Scope .................................................................................................................................................................................... 9
Calibration and Verification ............................................................................................................................................. 9
Troubleshooting................................................................................................................................................................ 9
Principles of Operation ..................................................................................................................................................... 9
Replaceable Parts.............................................................................................................................................................. 9
Circuit Diagrams............................................................................................................................................................... 9
Safety Considerations ........................................................................................................................................................... 9
Manual Revisions................................................................................................................................................................ 10
Firmware Revisions ............................................................................................................................................................ 10
Calibration and Verification................................................................................................................................................ 11
Introduction......................................................................................................................................................................... 11
Test Equipment Required ................................................................................................................................................... 11
Operation Verification Tests............................................................................................................................................... 11
Calibration Procedure ......................................................................................................................................................... 11
Initial Setup..................................................................................................................................................................... 14
Voltage Monitor Zero Calibration .................................................................................................................................. 15
Common Mode Calibration ............................................................................................................................................ 15
Remote Readback Zero Calibration ................................................................................................................................ 15
Constant Voltage Full Scale Calibration......................................................................................................................... 17
Voltage Monitor and Remote Readback Full Scale Calibration ..................................................................................... 17
Constant Voltage Zero Calibration ................................................................................................................................. 18
Current Monitor Zero Calibration................................................................................................................................... 18
Constant Current Zero Calibration.................................................................................................................................. 18
Current Monitor Full Scale Calibration .......................................................................................................................... 19
Constant Current Full Scale Calibration ......................................................................................................................... 19
Power Limit Calibration.................................................................................................................................................. 20
Resistance Programming Full Scale Calibration............................................................................................................. 21
Performance Tests............................................................................................................................................................... 21
Measurement Techniques ............................................................................................................................................... 21
Constant Voltage (CV) Tests .......................................................................................................................................... 22
Constant Current (CC) Tests........................................................................................................................................... 28
Initialization Procedure....................................................................................................................................................... 31
Troubleshooting .................................................................................................................................................................... 33
Introduction......................................................................................................................................................................... 33
Initial Troubleshooting Procedures..................................................................................................................................... 33
Electrostatic Protection ....................................................................................................................................................... 34
Repair and Replacement ..................................................................................................................................................... 34
A2 Control Board Removal ............................................................................................................................................ 35
A4 FET Board Removal ................................................................................................................................................. 35
A5 Diode Board Removal............................................................................................................................................... 36
A8 GPIB Board Removal ............................................................................................................................................... 36
A3 Front-Panel Board Removal...................................................................................................................................... 36
A1 Main Board Removal ................................................................................................................................................ 36
Overall Troubleshooting Procedure.................................................................................................................................... 37
GPIB Section Troubleshooting ........................................................................................................................................... 39
Primary Interface Troubleshooting ..................................................................................................................................... 40
5
Secondary Interface Troubleshooting ................................................................................................................................. 41
Voltage and Current DAC............................................................................................................................................... 41
Readback DAC Circuits.................................................................................................................................................. 43
Readback Multiplexer (U20): ......................................................................................................................................... 43
Signature Analysis .............................................................................................................................................................. 45
Primary SA ..................................................................................................................................................................... 45
Front Panel SA................................................................................................................................................................ 45
Secondary SA ................................................................................................................................................................. 46
Power Section Troubleshooting .......................................................................................................................................... 51
Main Troubleshooting Setup........................................................................................................................................... 52
Troubleshooting No-Output Failures .............................................................................................................................. 53
Power Section Blocks ..................................................................................................................................................... 54
Troubleshooting AC-Turn-On Circuits........................................................................................................................... 57
Troubleshooting DC-To-DC Converter .......................................................................................................................... 57
Troubleshooting Bias Supplies ....................................................................................................................................... 58
Troubleshooting Down Programmer............................................................................................................................... 61
Troubleshooting CV Circuit ........................................................................................................................................... 61
Troubleshooting CC Circuit............................................................................................................................................ 62
Troubleshooting OVP Circuit ......................................................................................................................................... 62
Troubleshooting PWM & Clock..................................................................................................................................... 63
Principles of Operation ........................................................................................................................................................ 65
Introduction......................................................................................................................................................................... 65
GPIB Board ........................................................................................................................................................................ 65
Primary Microprocessor ................................................................................................................................................. 65
Address Switches ........................................................................................................................................................... 65
EEPROM ........................................................................................................................................................................ 67
Isolation .......................................................................................................................................................................... 67
Secondary Microprocessor ............................................................................................................................................. 67
Digital-to-Analog Converters.......................................................................................................................................... 67
Analog Multiplexer......................................................................................................................................................... 67
Status Inputs.................................................................................................................................................................... 67
Front Panel Board ............................................................................................................................................................... 68
Address Latches and Decoders ....................................................................................................................................... 68
Volts and Amps Output Ports and Displays.................................................................................................................... 68
RPG and Latches ............................................................................................................................................................ 68
Front-Panel Switches and Input Port............................................................................................................................... 68
Mode Indicators .............................................................................................................................................................. 70
OVP Adjust Control........................................................................................................................................................ 70
Power Clear .................................................................................................................................................................... 70
Power Mesh and Control Board.......................................................................................................................................... 70
Overview......................................................................................................................................................................... 70
Power Mesh .................................................................................................................................................................... 71
Control Board ................................................................................................................................................................. 73
Replaceable Parts.................................................................................................................................................................. 79
Introduction......................................................................................................................................................................... 79
Ordering Information .......................................................................................................................................................... 80
Component Location and Circuit Diagrams .................................................................................................................... 101
6
l00 Vac Input Power Option 100 ....................................................................................................................................... 119
General Information.......................................................................................................................................................... 119
Description.................................................................................................................................................................... 119
Scope of Appendix A.................................................................................................................................................... 119
Suggestions for Using Appendix A............................................................................................................................... 119
Chapter 1 Manual Changes ........................................................................................................................................... 119
Chapter 2 Manual Changes ........................................................................................................................................... 119
Chapter 3 Manual Changes:.......................................................................................................................................... 123
Chapter 4 Manual Changes:.......................................................................................................................................... 123
Chapter 5 and 6 Manual Changes ................................................................................................................................. 123
Blank Front Panel Option 001........................................................................................................................................... 125
Introduction....................................................................................................................................................................... 125
Troubleshooting............................................................................................................................................................ 125
Chapter 2 Manual Changes:.......................................................................................................................................... 125
Chapter 3 Manual Changes:.......................................................................................................................................... 126
Chapter 5 and 6 Manual Changes: ................................................................................................................................ 126
7
1
Introduction
Scope
This manual contains information for troubleshooting the Agilent 6030A, 6031A, 6032A, or 6035A 1000 W Autoranging
Power Supply to the component level. Wherever applicable, the service instructions given in this manual refer to pertinent
information provided in the Operation Manual (P/N 5959-3301). Both manuals cover Agilent Models
6030A/31A/32A/35A; differences between models are described as required.
The following information is contained in this manual.
Calibration and Verification
Contains calibration procedures for Agilent Models 6030A/31A/32A/35A. Also contains verification procedures that check
the operation of the supplies to ensure they meet the specifications of Chapter 1 in the Operating Manual.
Troubleshooting
Contains troubleshooting procedures to isolate a malfunction to a defective component on the main circuit board or to a
defective assembly (front panel, power transformer, or cable assembly). Board and assembly level removal and replacement
procedures are also given in this section.
Principles of Operation
Provides block diagram level descriptions of the supply's circuits. The primary interface, secondary interface, and the power
mesh and control circuits are described. These descriptions are intended as an aid in troubleshooting.
Replaceable Parts
Provides a listing of replaceable parts for all electronic components and mechanical assemblies for Agilent Models
6030A/31A/32A/35A.
Circuit Diagrams
Contains functional schematics and component location diagrams for all Agilent 6030A/31A/32A/35A circuits. The names
that appear on the functional schematics also appear on the block diagrams in Chapter 2. Thus, the descriptions in Chapter 2
can be correlated with both the block diagrams and the schematics.
Safety Considerations
This product is a Safety Class 1 instrument, which means that it is provided with a protective earth terminal. Refer to the
Safety Summary page at the beginning of this manual for a summary of general safety information. Safety information for
specific procedures is located at appropriate places in the manual.
9
Manual Revisions
Agilent Technologies instruments are identified by a 10-digit serial number. The format is described as follows: first two
letters indicate the country of manufacture. The next four digits are a code that identify either the date of manufacture or of a
significant design change. The last four digits are a sequential number assigned to each instrument.
Item
Description
US
The first two letters indicates the country of manufacture, where US = USA.
3648
This is a code that identifies either the date of manufacture or the date of a significant design change.
0101
The last four digits are a unique number assigned to each power supply.
If the serial number prefix on your unit differs from that shown on the title page of this manual, a yellow Manual Change
sheet may be supplied with the manual. It defines the differences between your unit and the unit described in this manual.
The yellow change sheet may also contain information for correcting errors in the manual.
Note that because not all changes to the product require changes to the manual, there may be no update information required
for your version of the supply.
Older serial number formats used with these instruments had a two-part serial number, i.e. 2701A-00101. This manual also
applies to instruments with these older serial number formats. Refer to Appendix G for backdating information.
Firmware Revisions
The primary and secondary interface microcomputer chips inside of your supply are identified with labels that specify the
revision of the supply's firmware. This manual applies to firmware revisions A.00.00, A.00.01, and A.00.02.
10
2
Calibration and Verification
Introduction
This section provides test and calibration procedures. The operation-verification tests comprise a short procedure to verify
that the unit is performing properly, without testing all specified parameters. After troubleshooting and repair of a defective
power supply you can usually verify proper operation with the turn-on checkout procedure in the Operating Manual. Repairs
to the A1 main board, the A2 control board and the A8 GPIB board can involve circuits which, although functional, may
prevent the unit from performing within specified limits. So, after A1, A2 or A8 board repair, decide if recalibration and
operation verification tests are needed according to the faults you discover. Use the calibration procedure both to check
repairs and for regular maintenance.
When verifying the performance of this instrument as described in this chapter, check only those specifications for which a
performance test procedure is included.
Test Equipment Required
Table 2-1 lists the equipment required to perform the tests of this section. You can separately identify the equipment for
performance tests, calibration and troubleshooting using the USE column of the table.
Operation Verification Tests
To assure that the unit is performing properly, without testing all specified parameters, first perform the turn-on checkout
procedure in the Operating Manual. Then perform the following performance tests, in this section.
Voltage Programming And Readback Accuracy
Current Programming And Readback Accuracy
CV Load Effect
CC Load Effect
Calibration Procedure
Calibrate the unit twice per year and when required during repair. The following calibration procedures should be
performed in the sequence given.
Note:
Some of the calibration procedures for this instrument can be performed independently, and some
procedures must be performed together and/or in a prescribed order. If a procedure contains no references
to other procedures, you may assume that it can be performed independently.
To return a serviced unit to specifications as quickly as possible with minimal calibration, the technician
need only perform calibration procedures that affect the repaired circuit. Table 2-2 lists various power
supply circuits with calibration procedures that should be performed after those circuits are serviced.
If the GPIB board (A8) has been replaced, you must first initialize the board before you can calibrate the
unit. Refer to Page 31.
11
Table 2-1. Test Equipment Required
TYPE
Oscilloscope
RMS Voltmeter
Logic Pulser
Multimeter
Signature Analyzer
GPIB Controller
Current Probe
Electronic Load
Current Shunt
Power Resistors*
Calibration and Test
Resistors
Terminating
Resistors (2)
Blocking
Capacitors (2)
Variable Voltage
Transformer
(autotransformer)
Isolation Transformer
Common-mode
Toroidal Core
DC Power Supply
REQUIRED CHARACTERISTICS
Sensitivity: 1 mV
Bandwidth: 20MHz & 100MHz
Input: differential, 50 Ω & 10MΩ
True rms, 10MHz bandwidth
Sensitivity: 1 mV Accuracy: 5%
4.5 to 5.5Vdc @ 35mA
Resolution: 100nV
Accuracy: 0.0035%, 6½ digit
-Full GPIB capabilities
No saturation at 100A
Bandwidth: 20Hz to 15MHz
USE
P,T
RECOMMENDED MODEL
Agilent 54504A
P
Agilent 3400B
T
P,C,T
Agilent 546A
Agilent 3458A
T
C,T,P
P
6030A 200 V/5 A
60 V/17A
6031A 20 V/50 A
7 V/120 A
6032A 60 V/17.5 A
20 V/50 A
6035A 500 V/2 A
200 V/5 A
0.1Ω/0.04%/15A/25W
0.01Ω/0.04%/100A/100W
0.001Ω/0.04%/300A/100W
6030A 3.5Ω/40Ω 1% 1000 W (min.)
6031A 0.069Ω/0.04Ω 1% 1000W (min.)
6032A 0.4Ω/3.5Ω 1% 1000W (min.)
6035A 40Ω/250Ω 1% 1000W (min.)
Value: 100Ω, 5%, 1W
1Ω, 5%, ½W
1KΩ, 5%, ¼W
2KΩ, 0.01%, ¼W
Value: 50Ω ±5%, noninductive
P,C
Agilent 5004A
HP Series, 200/300
Tek P6303 Probe
AM503 Amp
TM500 Power Module
6050A & 60503A (4)
6050A & 60503A (4)
6050A & 60504A (2)
6050A & 60504A (2)
6050A & 60504A (2)
6050A & 60504A (2)
Power Resistor 250Ω 1% 1KW
6050A & 60503A (4)
Guildline 9230/15
Guildline 9230/100
Guildline 9230/300
P,C
P,C
C,T
P
Value: 0.01µF, 100Vdc
P
Adjustable from -13% to +6% of input
voltage range, 4KVA minimum
P,C
4KVA minimum
≥3.7µH/turn2
≅23mm I.D.
T
P
Ferrox-Cube
500T600-3C8,
Agilent 9170-0061
Agilent 6024A
Voltage range: 0-60Vdc
C,T
Current range: 0-3Adc
P = performance testing C = calibration adjustments
T = troubleshooting
* Not required if using electronic load.
** Less accurate, and less expensive, current-monitor resistors can be used, but the accuracy to which current programming
and readback can be checked must be reduced accordingly.
12
Table 2-2. Guide to Recalibration After Repair
Printed Circuit
Board
Block Name
Ref.
Desig.
Perform These Procedures
A1 Main Board
R3
Current Monitor Full Scale Calibration
Constant Current Full Scale Calibration
A1 Main Board
T1, T2
Power Limit Calibration
A5 Diode Board
CR4
Power Limit Calibration
A2 Control Board
Constant Voltage Circuit
(All Except Current Source)
All
Voltage Monitor Zero Calibration
Common Mode Calibration
Remote Readback Zero Calibration
Constant Voltage Full Scale Calibration
Voltage Monitor and Remote Readback Full
Scale Calibration
Constant Voltage Zero Calibration
A2 Control Board
Constant Voltage Circuit
(Current Source)
All
Resistance Programming Full Scale Calibration
A2 Control Board
Constant Current Circuit
All
Current Monitor Zero Calibration
Constant Current Zero Calibration
Current Monitor Full Scale Calibration
Constant Current Full Scale Calibration
A2 Control Board
Power Limit Comparator
All
Power Limit Calibration
A2 Control Board
Bias Power Supplies
( + & -15V Supplies)
All
All Calibration procedures
A8 GPIB Board
Voltage Monitor Buffer
All
Voltage Monitor Zero Calibration
Remote Readback Zero Calibration
Constant Voltage Full Scale Calibration
Voltage Monitor and Remote Readback Full
Scale Calibration
Constant Voltage Zero Calibration
A8 GPIB Board
Analog Multiplexer
All
Remote Readback Zero Calibration
Constant Voltage Full Scale Calibration
Voltage Monitor and Remote Readback Full
Scale Calibration
Constant Voltage Zero Calibration
A8 GPIB Board
Readback DAC
All
Remote Readback Zero Calibration
Constant Voltage Full Scale Calibration
Voltage Monitor and Remote Readback Full
Scale Calibration
Constant Voltage Zero Calibration
13
Table 2-2. Guide to Recalibration After Repair (continued)
Printed Circuit
Board
Block Name
Ref.
Desig.
Perform These Procedures
A8 GPIB Board
Voltage DAC
All
Remote Readback Zero Calibration
Constant Voltage Full Scale Calibration
Voltage Monitor and Remote Readback Full
Scale Calibration
Constant Voltage Zero Calibration
A8 GPIB Board
Current DAC
All
Constant Current Zero Calibration
Constant Current Full Scale Calibration
U5
Remote Readback Zero Calibration
Constant Voltage Full Scale Calibration
Voltage Monitor and Remote Readback Full
Scale Calibration
Constant Voltage Zero Calibration
Constant Current Full Scale Calibration
A8 GPIB Board
Initial Setup
a.
b.
c.
d.
e.
f.
g.
h.
i.
Unplug the line cable.
Remove the top cover by removing the two top-rear screws. Slide the cover to the rear, and pull up.
Plug a control board test connector onto the A2J7 card edge fingers.
Turn OVERVOLTAGE ADJUST control A3R72 fully clockwise.
Disconnect all loads from output terminals.
Connect power supply for local sensing, and ensure that MODE switches are set as shown below.
Connect a GPIB controller to the power supply.
Reconnect line cable and turn on ac power.
Allow unit to warm up for 30 minutes with the internal cover on. The cover should remain in place during all
calibrations.
j. When attaching the DVM, the minus lead of the DVM should be connected to the first node listed, and the plus lead
should be connected to the second node listed.
k. At the beginning of each calibration procedure, the power supply should be in its power-on state (turn ac power off and
back on), with no external circuitry connected except as instructed.
l. The POWER LIMIT adjustment (A2R25) must be adjusted at least coarsely before many of the calibration procedures
can be performed. If you have no reason to suspect that the Power Limit circuit is out of adjustment, do not change its
setting. Otherwise, center A2R25 before you begin to calibrate the power supply.
m. Turn off ac power when making or removing connections to the power supply.
14
Maintenance described herein is performed with power supplied to the instrument, and protective covers
removed. Such maintenance should be performed only by service trained personnel who are aware of the
hazards involved (for example, fire and electrical shock). Where maintenance can be performed without
power applied, the power should be removed.
Voltage Monitor Zero Calibration
a.
b.
c.
d.
Send string "VSET 0; ISET 0; OUT OFF".
Short power supply output terminals.
Attach the DVM from M on the rear panel through a 1kΩ resistor to A2J7 pin 3 (V-MON buffered).
Adjust A2R22 (V-MON ZERO) to 0V ±20µV. ( ± 40µV 6035A).
Common Mode Calibration
a.
b.
c.
d.
e.
f.
g.
Send string ''VSET 0; ISET 0; OUT OFF".
Short power supply sense terminals ( + S to - S) at rear panel.
Attach the DVM from M on the rear panel through a 1kΩ resistor to A2J7 pin 3 (V-MON buffered).
Take initial reading from DVM.
Remove both local sensing straps from rear-panel terminal block, and connect a 1-volt external power supply with its +
lead to - S and its--lead to - Out. See Figure 2-1.
Adjust A2R21 (CV LOAD REG) to Initial Reading
±20µV (6030A)
±80µV (6031A)
±20µV (6032A)
±40µV (6035A)
Replace local sense straps after removing external power supply.
Note:
Common mode calibration is not required for Agilent Model 6035A.
Remote Readback Zero Calibration
Note:
a.
b.
c.
d.
e.
f.
This procedure and the following three procedures must be done as a set, without omitting any of the four
procedures. Also, the following four procedures require that V-MON ZERO (A2R22) be adjusted within
specifications. If it is not, perform the Voltage Monitor Zero Calibration before proceeding.
Connect an external supply to the power supply as shown in Figure 2-2.
Send string "VSET 0; ISET 5; OUT ON''.
Attach the DVM from M on the rear panel through a 1KΩ resistor to A2J7 pin 3 (V-MON buffered).
Adjust A8R40 (CV PROG ZERO) to 625µV ± 30µV.
Remove the DVM.
Enter and run the following program and begin noting the controller's display:
10 OUTPUT 705; "VOUT''
20 ENTER 705; A
30 DISP A
40 GOTO 10
50 END
15
g.
h.
Adjust A8R51 (READBACK ZERO) until the value displayed on the controller toggles between:
0 and 50mV (6030A)
0 and 5mV (6031A)
0 and 15mV (6032A)
0 and 125mV (6035A)
After adjusting A8R51 you must continue the calibration procedure through to the completion of Constant Voltage
Zero Calibration. Remember to disconnect the external power supply and resistor.
Figure 2-1. Common Mode Setup
Figure 2-2. Remote Readback Zero And CV Zero Calibration Setup
16
Constant Voltage Full Scale Calibration
Note:
a.
b.
c.
d.
e.
Perform this procedure only after completing Remote Readback Zero Calibration.
Remove all external test circuits.
Send string:
"VSET 200; ISET 5; OUT ON" (6030A)
''VSET 20; ISET 5; OUT ON" (6031A)
"VSET 60; ISET 5; OUT ON" (6032A)
"VSET 500; ISET 5; OUT ON" (6035A)
Attach the DVM from - S to + S terminals on rear panel.
Adjust A8R58 (CV PROG F.S.) to:
200.025 ±6mV (6030A)
20.0025 ±0.6mV (6031A)
60.0075 ±1.82mV (6032A)
500.063 ±6mV (6035A)
After adjusting A8R58 you must continue the calibration procedure through to the completion of Constant Voltage
Zero Calibration.
Voltage Monitor and Remote Readback Full Scale Calibration
Note:
a.
b.
c.
d.
e.
f.
g.
Perform this procedure only after completing Constant Voltage Full Scale Calibration.
Attach the DVM from M on the rear panel to A2J7 pin 3 (V-MON buffered). See DVM connection in Figure 2-1.
Send string:
''VSET 200; ISET 5; OUT ON'' (6030A)
''VSET 20; ISET 5; OUT ON'' (6031A)
''VSET 60; ISET 5; OUT ON'' (6032A)
''VSET 500; ISET 5; OUT ON" (6035A)
Adjust A8R75 (V-MON F.S.) to 5.000625V ±100µV.
Disconnect the DVM.
Enter and run the following program and begin noting the controller's display.
10 OUTPUT 705; ''VOUT?''
20 ENTER 705; A
30 DISP A
40 GOTO 10
50 END
Adjust A8R61 (READBACK F.S.) until the value displayed on the controller toggles between:
200.000 and 200.050 Vdc (6030A)
20.000 and 20.005 Vdc (6031A)
60.000 and 60.015 Vdc (6032A)
500.000 and 500.125 Vdc (6035A)
After adjusting A8R61 you must continue the calibration procedure through to the completion of Constant Voltage
Zero Calibration.
17
Constant Voltage Zero Calibration
Note:
a.
b.
c.
d.
Perform this procedure only after completing Voltage Monitor and Remote Readback Full Scale
Calibration.
Send string "VSET 0; ISET 5; OUT ON".
Connect an external supply to the power supply as shown in Figure 2-2.
Attach the DVM from - S to + S on the rear panel.
Adjust A8R40 (CV PROG ZERO) to 0 ±120µV.
Current Monitor Zero Calibration
a.
b.
c.
d.
e.
Send string "VSET 0; ISET 0; OUT OFF''.
Connect a short across power supply output terminals.
Attach the DVM from M to IM on the rear panel.
Allow several minutes (3 or more) to ensure thermal settling.
Adjust A2R8 (I-MON ZERO) to 0 ±100µV.
Constant Current Zero Calibration
a.
b.
c.
d.
Connect the test setup shown in Figure 2-3.
Send string ''VSET 5; ISET 0; OUT ON''.
Allow several minutes (3 or more) to ensure thermal settling.
Adjust A8R29 (CC PROG ZERO) to:
0V ±0.6mV (6030A, 6035A)
0V ±8.0mV (6031A)
0V ±1.7mV (6032A)
Figure 2-3. CC Zero Calibration Setup
18
Current Monitor Full Scale Calibration
Note:
a.
b.
c.
d.
e.
f.
This procedure requires that I-MON ZERO (A2R8) be adjusted within specifications. If it is not, perform
the Current Monitor Zero Calibration before proceeding.
Connect Rm current-monitoring shunt:
(1milliohm, 6031A)
(10 milliohm, 6030A, 6032A)
(100 milliohm, 6035A)
0.05% or better across power supply output terminals.
Send string:
"VSET 5; ISET 17; OUT ON" (6030A)
"VSET 5; ISET 120; OUT ON" (6031A)
"VSET 5; ISET 50; OUT ON" (6032A)
"VSET 5; ISET 5; OUT ON" (6035A)
Attach DVM from M to IM on the rear panel. Use six-digit display on Agilent 3458A DVM.
Take initial reading from DVM.
Attach DVM across Rm. Allow several minutes (3 or more) to ensure thermal settling. This can be noted as a stable
reading on the DVM.
Adjust A2R9 (I-MON F.S.) to:
0.034 * initial reading ±33.5µV (6030A)
0.024 * initial reading ±80.0µV (6031A)
0.100 * initial reading ±0.4mV (6032A)
0.100 * initial reading ±67.0µV (6035A)
Constant Current Full Scale Calibration
Note:
a.
b.
c.
d.
This procedure requires that CC PROG ZERO (A8R29) and I-MON F. S. (A2R9) be adjusted within
specifications. If they are not, perform Constant Current Zero and/or Current Monitor Full Scale
Calibration before proceeding.
Connect Rm current-monitoring shunt:
( 1 milliohm, 6031A)
( 10 milliohm, 6030A, 6032A)
(100 milliohm, 6035A)
0.05% or better across power supply output terminals.
Send string:
"VSET 5; ISET 17; OUT ON" (6030A)
"VSET 5, ISET 120; OUT ON'' (6031A)
"VSET 5, ISET 50; OUT ON" (6032A)
''VSET 5; ISET 5; OUT ON" (6035A)
Attach DVM across Rm. Allow several minutes (3 or more) to ensure thermal settling.
Adjust A8R55 (CC PROG F.S.) to:
1.70V ±0.1mV (6030A)
0.12V ±3.0µV (6031A)
0.50V ±30µV (6032A)
0.50V ±40µV (6035A)
19
Power Limit Calibration
Note:
a.
This procedure requires that CC PROG F. S. (A8R55) be adjusted within specifications. If it is not,
perform Constant Current Full Scale Calibration before proceeding.
Connect the power supply to the ac power line through a variable autotransformer. Connect a DVM across the input
power rails, with the + lead to the rear of A1R3 and the - lead to the rear of A1R1. Adjust the autotransformer for
240Vdc on the input power rail. The input power rail must be maintained at 240Vdc during calibration.
The top inside cover must be removed to connect the DVM. Disconnect the ac mains power cord before
connecting or disconnecting the DVM.
a.
Connect a electronic load across the output terminals, or use a:
3.8 ohm 1500W resistor (6030A)
0.066 ohm 1500W resistor (6031A)
0.44 ohm 1500 W resistor (6032A)
39 ohm 1500 W resistor (6035A)
b. Set the electronic load for:
17 amperes (6030A)
120 amperes (6031A)
51 amperes (6032A)
5 amperes (6035A)
in the constant Current mode.
c. Turn A2R25 (LOWER KNEE) fully counterclockwise.
d. Turn on power supply and send string:
"VSET 65; ISET 17.4; OUT ON" (6030A)
''VSET 8; ISET 121; OUT ON'' (6031A)
"VSET 22; ISET 51; OUT ON" (6032A)
''VSET 200; ISET 5.1; OUT ON'' (6035A)
e. Adjust A2R25 (LOWER KNEE) clockwise until CV LED on front panel turns on. Power supply output should be:
65 ±0.2V @17A in CV mode (6030A)
8 ±0.08V @120A in CV mode (6031A)
22 ±0.2V @50A in CV mode (6032A)
200 ±0.5V @5A in CV mode (6035A)
f. Turn off power supply. Reset the electronic load for:
5.25A in CC mode (6030A)
51A in CC mode (6031A)
18.2A in CC mode (6031A)
2.2A in CC mode (6035A)
or change the resistor to:
38ohm 1500W (6033A)
0.4ohm 1500W (6031A)
3.3ohm 1500W(6032A)
227ohm 1500W(6035A)
g. Turn A2R26 (UPPER KNEE) fully counterclockwise.
h. Turn on power supply. Send string
"VSET 200; ISET 5.5; OUT ON" (6030A)
"VSET 20.5; ISET 55; OUT ON" (6031A)
"VSET 60; ISET 19; OUT ON" (6032A)
"VSET 500; ISET 2.2; OUT ON" (6035A)
20
i.
Adjust A2R26 (UPPER KNEE) clockwise until front panel CV LED turns on. Power supply output should be:
200 ±0.4V @5.25A in CV mode (6030A)
20.5 ±0.5V @55A in CV mode (6031A)
60 ±0.4V @18.2A in CV mode (6032A)
500 ±0.4V @2.2A in CV mode (6035A)
Resistance Programming Full Scale Calibration
a.
b.
c.
Send string ''OUT OFF".
Connect a 2K ohm calibration resistor from P to VP on rear panel.
Set rear-panel MODE switches for resistance programming:
d.
e.
f.
Attach the DVM from P to VP on the rear panel.
Adjust A2R23 (R-PROG F.S.) to 2.5V ±4mV.
Remember to reset MODE switches to original settings.
Performance Tests
The following paragraphs provide test procedures for verifying the unit's compliance with the specifications of Table 1-1 in
the Operating Manual. Please refer to CALIBRATION PROCEDURE or TROUBLESHOOTING if you observe
out-of-specification performance. The performance test specifications are listed in the Performance Test Record in
Appendix C through F. You can record the actual measured values in the columns provided.
Measurement Techniques
Setup For All Tests. Measure the output voltage directly at the + S and - S terminals. Connect unit for local sensing, and
ensure that MODE switches are set as shown below. Select an adequate wire gauge for load leads using the procedures
given in the Operating Manual for connecting the load.
Electronic Load. The test and calibration procedures use an electronic load to test the unit quickly and accurately. If an
electronic load is not available, you may substitute:
40Ω 1000W load resistor (6030A)
0.4Ω 1000W load resistor (6031A)
3.5Ω 1000W load resistor (6032A)
250Ω 1000W load resistor (6035A)
for the electronic load in these tests:
CV Source Effect (Line Regulation)
CC Load Effect (Load Regulation)
21
You may substitute:
3.5Ω 1000W load resistor (6030A)
0.069Ω 1000W load resistor (6031A)
0.4Ω 1000W load resistor (6032A)
40Ω 1000W load resistor (6035A)
in these tests:
CV Load Effect (Load Regulation)
CV PARD (Ripple and Noise)
CC Source Effect (Line Regulation)
CC PARD (Ripple and Noise)
The substitution of the load resistor requires adding a load switch and making minor changes to the procedures. The load
transient recovery time test procedure is not amenable to modification for use with load resistors.
An electronic load is considerably easier to use than a load resistor. It eliminates the need for connecting resistors or
rheostats in parallel to handle the power, it is much more stable than a carbon-pile load, and it makes easy work of switching
between load conditions as is required for the load regulation and load transient-response tests.
Current-Monitoring Resistor. To eliminate output current measurement error caused by voltage drops in the leads and
connections, connect the current-monitoring resistor between -OUT and the load as a four-terminal device. Figure 2-4
shows correct connections. Connect the current-monitoring test leads inside the load-lead connections directly at the
monitoring resistor element.
Note:
A current-monitoring resistor with 1% accuracy is suitable for all tests except current programming
accuracy and current readback accuracy. For these tests, use the shunt listed in Table 2-1.
Figure 2-4. Current-Monitoring Resistor Setup
GPIB Controller. Most performance tests can be performed using only front-panel controls. However, a GPIB controller is
required to perform the voltage and current programming accuracy tests and the voltage and current readback accuracy tests.
Constant Voltage (CV) Tests
CV Setup. If more than one meter or a meter and an oscilloscope are used, connect each to the + S and - S terminals by a
separate pair of leads to avoid mutual coupling effects. Connect only to + S and -S because the unit regulates the output
voltage between + S and - S, not between + OUT and -OUT. Use coaxial cable or shielded 2-wire cable to avoid pickup on
test leads. For all CV tests set the output current at full output to assure CV operation.
Voltage Programming And Readback Accuracy. This procedure verifies that the voltage programming and readback
functions are within specifications. A GPIB controller must be used for this test.
a. Connect digital voltmeter between + S and - S.
b. Turn on ac power to the power supply.
c. Send string:
"VSET 0.5; ISET 17" (6030A)
22
''VSET 0.1; ISET 120'' (6031A)
''VSET 0.09; ISET 50" (6032A)
''VSET 1.0; ISET 5'' (6035A)
d. The DVM reading should be in the range:
0.354 to 0.645Vdc (6030A)
0.085 to 0.115Vdc (6031A)
0.050 to 0.130Vdc (6032A)
0.598 to 1.400Vdc (6035A)
Note the reading.
e. Enter and run the following program:
10 OUTPUT 705; "VOUT?"
20 ENTER 705;A
30 DISP A
40 GOTO 10
50 END
f. The value displayed by the controller should be the value noted in step d:
± 0.080Vdc (6030A)
± 0.007Vdc (6031A)
± 0.020 Vdc (6032A)
± 0.205 Vdc (6035A)
g. Send string:
"VSET 200; ISET 17" (6030A)
''VSET 20; ISET 120'' (6031A)
''VSET 60; ISET 50" (6032A)
''VSET 500; ISET 5" (6035A)
h. The DVM reading should be in the range:
199.785 to 200.215Vdc (6030A)
19.978 to 20.022Vdc (6031A)
59.939 to 60.061 Vdc (6032A)
498.350 to 501.650 Vdc (6035A)
Note the reading.
i. Run the program listed in step e. The value displayed by the controller should be the value noted in step h:
± 0.240Vdc (6030A)
± 0.023 Vdc (6031A)
± 0.068 Vdc (6032A)
± 2.700 Vdc (6035A)
Load Effect (Load Regulation). Constant-voltage load effect is the change in dc output voltage (Eo) resulting from a
load-resistance change from open-circuit to full-load. Full-load is the resistance which draws the maximum rated output
current at voltage Eo. Proceed as follows:
a. Connect the test equipment as shown in Figure 2-5. Operate the load in constant resistance mode (Amps/Volt) and set
resistance to maximum.
b. Turn the unit's power on, and, using DISPLAY SETTINGS pushbutton switch, turn up current setting to full output.
c. Turn up output voltage to:
60Vdc (6030A)
7.0Vdc (6031A)
20.0Vdc (6032A)
200Vdc (6035A)
as read on the digital voltmeter.
23
Figure 2-5. Basic Test Setup
d.
e.
f.
g.
h.
Reduce the resistance of the load to draw an output current of:
17.0Adc (6030A)
120Adc (6031A)
50 Adc (6032A)
5.0 Adc (6035A)
Check that the unit's CV LED remains lighted.
Open-circuit the load.
Record the output voltage at the digital voltmeter.
Reconnect the load.
When the reading settles, record the output voltage again. Check that the two recorded readings differ no more than:
± 0.011Vdc (6030A)
± 0.0037Vdc (6031A)
± 0.007 Vdc (6032A)
± 0.033 Vdc (6035A)
Source Effect (Line Regulation). Source effect is the change in dc output voltage resulting from a change in ac input
voltage from the minimum to the maximum value as specified in Input Power Requirements in the Specifications Table, in
the Operating Manual. Proceed as follows:
a. Connect the test equipment as shown in Figure 2-5. Operate the load in constant resistance mode (Amps/Volt) and set
resistance to maximum.
b. Connect the unit to the ac power line through a variable autotransformer which is set for nominal line voltage.
c. Turn the unit's power on, and, using DISPLAY SETTINGS pushbutton switch, turn up current setting to full output.
d. Turn up output voltage to:
200Vdc (6030A)
20.0Vdc (6031A)
60.0Vdc (6032A)
500Vdc (6035A)
as read on the digital voltmeter.
24
e.
f.
g.
h.
i.
Reduce the resistance of the load to draw an output current of:
5.0Adc (6030A)
50 Adc (6031A)
16.5 Adc (6032A)
2.0 Adc (6035A)
Check that the unit's CV LED remains lighted.
Adjust autotransformer to the minimum for your line voltage.
Record the output voltage at the digital voltmeter.
Adjust autotransformer to the maximum for your line voltage.
When the reading settles record the output voltage again. Check that the two recorded readings differ no more than:
± 0.011Vdc (6030A)
± 0.004Vdc (6031A)
± 0.009Vdc (6032A)
± 0.063Vdc (6035A)
PARD (Ripple And Noise). Periodic and random deviations (PARD) in the unit's output-ripple and noise-combine to
produce a residual ac voltage superimposed on the dc output voltage. Constant-voltage PARD is specified as the
root-mean-square (rms) or peak-to-peak (pp) output voltage in a frequency range of 20 Hz to 20 MHz.
RMS Measurement Procedure. Figure 2-6 shows the interconnections of equipment to measure PARD in Vrms. To ensure
that there is no voltage difference between the voltmeter's case and the unit's case, connect both to the same ac power outlet
or check that the two ac power outlets used have the same earth-ground connection.
Use the common-mode choke as shown to reduce ground-loop currents from interfering with measurement. Reduce noise
pickup on the test leads by using 50Ω coaxial cable, and wind it five turns through the magnetic core to form the
common-mode choke. Proceed as follows:
a. Connect the test equipment as shown in Figure 2-6. Operate the load in constant resistance mode (Amps/Volt) and set
resistance to maximum.
b. Turn the unit's power on, and, using DISPLAY SETTINGS pushbutton switch, turn up current setting to full output.
c. Turn up output voltage to:
60Vdc (6030A)
7Vdc (6031A)
20Vdc (6032A)
200Vdc (6035A)
d. Reduce the resistance of the load to draw an output current of:
17.0Adc (6030A)
120Adc (6031A)
50Adc (6032A)
5.0Adc (6035A)
Check that the unit's CV LED remains lighted.
e. Check that the rms noise voltage at the true rms voltmeter is no more than:
22mV rms (6030A)
8 mV rms (6031A)
6 mV rms (6032A)
50 mV rms (6035A)
25
Figure 2-6. RMS Measurement Test Setup, CV PARD Test
Peak Measurement Procedure. Figure 2-7 shows the interconnections of equipment to measure PARD in Vpp. The
equipment grounding and power connection instructions of Paragraph 2-36 apply to this setup also. Connect the
oscilloscope to the + S and - S terminals through 0.01µF blocking capacitors to protect the oscilloscope's input from the
unit's output voltage. To reduce common-mode noise pickup, set up the oscilloscope for a differential, two-channel voltage
measurement. To reduce normal-mode noise pickup, use matched-length, 1 meter or shorter, 50Ω coaxial cables with
shields connected to the oscilloscope case and to each other at the other ends. Proceed as follows:
a.
b.
c.
Connect the test equipment as shown in Figure 2-7. Operate the load in constant resistance mode (Amps/Volt) and set
resistance to maximum.
Turn the unit's power on, and, using DISPLAY SETTINGS pushbutton switch, turn up current setting to full output.
Turn up output voltage to:
60Vdc (6030A)
7Vdc (6031A)
20Vdc (6032A)
200 Vdc (6035A)
d.
Turn up output current setting to full output and reduce the resistance of the load to draw an output current of:
17.0Adc (6030A)
120Adc (6031A)
50Adc (6032A)
5.0Adc (6035A)
Check that the unit's CV LED remains lighted.
e.
Set the oscilloscope's input impedance to 50Ω and bandwidth to 20MHz. Check that the peak-to-peak is no more than:
50mV (6030A/31A)
40mV (6032A)
160mV (6035A)
26
Figure 2-7. Peak-To-Peak Measurement Test Setup, CV PARD Test
Load Transient Recovery Time. Specified for CV operation only; load transient recovery time is the time for the output
voltage to return to within a specified band around its set voltage following a step change in load.
Use the equipment setup of Figure 2-5 to display output voltage transients while switching the load between 10% with the
output set at:
60Vdc (6030A)
7Vdc (6031A)
20Vdc (6032A)
200Vdc (6035A)
Proceed as follows:
a.
b.
c.
d.
e.
f.
Connect the test equipment as shown in Figure 2-5. Operate the load in constant-current mode and set for minimum
current.
Turn the unit's power on, and, using DISPLAY SETTINGS pushbutton switch, turn up current setting to full output.
Turn up output voltage to:
60Vdc (6030A)
7Vdc (6031A)
20.0Vdc (6032A)
200Vdc (6035A)
as read on the digital voltmeter.
Set the load to vary the load current between:
15.3 and 17Adc (6030A)
108 and 120Adc (6031A)
45 and 50Adc (6032A)
4.5 and 5.0 Adc (6035A)
at a 30Hz rate for the 10% RECOVERY TEST.
Set the oscilloscope for ac coupling, internal sync and lock on either the positive or negative load transient.
Adjust the oscilloscope to display transients as in Figure 2-8.
27
.
Figure 2-8. Load Transient Recovery Waveform
g.
Check that the amplitude of the transient pulse at 1 ms is no more than:
150mV/2ms (6030A)
100mV/2ms (6031A)
100mV/2ms (6032A)
200mV/5ms (6035A)
Constant Current (CC) Tests
CC Setup. Constant-current tests are analogous to constant-voltage tests, with the unit's output short circuited and the
voltage set to full output to assure CC operation. Follow the general setup instructions of Pages 21 and 22.
Current Programming And Readback Accuracy. This procedure verifies that the current programming and readback
functions are within specifications. A GPIB controller must be used for this test. The accuracy of the current shunt resistor
(Rm) must be 0.02% or better. Proceed as follows:
a.
b.
c.
d.
e.
f.
28
Connect test setup shown in Figure 2-5, except replace the load with a short circuit.
Turn on ac power to the power supply.
Send string:
"VSET 200; ISET 0.5" (6030A)
"VSET 20; ISET 0.5" (6031A)
''VSET 60; ISET 0.5" (6032A)
''VSET 500; ISET 0.10" (6035A)
Check that the voltage across Rm is in the range:
4.75 to 5.25mV (6030A)
248 to 751µV (6031A)
4.14 to 5.86mV (6032A)
1.5 to 18.5mV (6035A)
Note the reading.
Enter and run the following program:
10 OUTPUT 705; "IOUT?''
20 ENTER 705; A
30 DISP A
40 GOTO 10
50 END
The value displayed by the controller should be the actual output current:
± 17mA (6030A)
± 102mA (6031A)
± 36mA (6032A)
± 50 mA (6035A)
g.
h.
i.
j.
Send string:
"VSET 200; ISET 17" (6030A)
''VSET 20; ISET 120" (6031A)
''VSET 60; ISET 50" (6032A)
''VSET 500; ISET 5" (6035A)
Check that the voltage across Rm is in the range:
169.72 to 170.28mV (6030A)
119.4 to 120.55mV (6031A)
498.1 to 501.8 mV (6032A)
490 to 510 mV (6035A)
Note the reading.
Run the program listed in step e.
The value displayed by the controller should be the actual output current:
± 76mA (6030A)
± 580mA (6031A)
± 215mA (6032A)
± 75mA (6035A)
Load Effect (Load Regulation). Constant current load effect is the change in dc output current (Io) resulting from a
load-resistance change from short-circuit to full-load, or full-load to short-circuit. Full-load is the resistance which develops
the maximum rated output voltage at current Io. Proceed as follows:
a. Connect the test equipment as shown in Figure 2-5. Operate the load in constant resistance mode (Amps/Volt) and set
resistance to minimum.
b. Turn the unit's power on, and, using DISPLAY SETTINGS pushbutton switch, turn up voltage setting to full output.
c. Turn up output current to:
5.0Adc (6030A)
50Adc (6031A)
16.5Adc (6032A)
2.0Adc (6035A)
d. Increase the load resistance until the output voltage at +S and -S decreases to:
200Vdc (6030A).
20Vdc (6031A).
60Vdc (6032A)
500Vdc (6035A)
Check that the CC LED is lighted and AMPS display still reads ≈ current setting.
e. Short-circuit the load and allow the voltage across Rm to stabilize.
f. Record voltage across Rm.
g. Disconnect short across load.
h. When the reading settles (≈ 10s), record the voltage across Rm again. Check that the two recorded readings differ no
more than:
± 10mA (6030A)
± 20mA (6031A)
± 11mA (6032A)
± 34mA (6035A)
Source Effect (Line Regulation). Constant current source effect is the change in dc output current resulting from a change
in ac input voltage from the minimum to the maximum values listed in the Specifications Table in the Operating Manual.
Proceed as follows:
a. Connect the test equipment as shown in Figure 2-5. Operate the load in constant resistance mode (Amps/Volt) and set
resistance to minimum.
b. Connect the unit to the ac power line through a variable autotransformer set for nominal line voltage.
c. Switch the unit's power on and turn up output voltage setting to full output.
29
d.
e.
f.
g.
h.
i.
Turn up output current to:
17.0Adc (6030A)
120Adc (6031A)
50Adc (6032A)
5.0 Adc (6035A)
Increase the load resistance until the output voltage between + S and - S decreases to:
60Vdc (6030A)
7.0Vdc (6031A)
20.0Vdc (6032A)
200 Vdc (6035A)
Check that the CC LED is still on.
Adjust autotransformer to the minimum for your line voltage.
Record the voltage across Rm.
Adjust autotransformer to the maximum for your line voltage.
When the reading settles record the voltage across Rm again. Check that the two recorded readings differ no more than:
6mA (6030A)
37mA (6031A)
15mA (6032A)
18 mA (6035A)
PARD Ripple And Noise. Periodic and random deviations (PARD) in the unit's output (ripple and noise) combine to
produce a residual ac current as well as an ac voltage super-imposed on the dc output. The ac voltage is measured as
constant-voltage PARD, Page 23. Constant-current PARD is specified as the root-mean-square (rms) output current in a
frequency range 20Hz to 20MHz with the unit in CC operation. To avoid incorrect measurements, with the unit in CC
operation, caused by the impedance of the electronic load at noise frequencies, use a:
3.5Ω (6030A)
0.069Ω (6031A)
0.4Ω (6032A)
40Ω (6035A)
load resistor that is capable of safely dissipating 1000 watts. Proceed as follows:
a. Connect the test equipment as shown in Figure 2-9.
Note: For Agilent 6031A units, use a 30Adc power supply in the test setup to subtract from the 120Adc of the Agilent
603lA unit under test. This will prevent the current probe specified in Table 2-1 from saturating. Make
sure the rms noise of the 30Adc supply is less than 10mA rms.
b.
c.
Switch the unit's power on and turn the output voltage all the way up.
Turn up output current to:
17.0Adc (6030A)
120Adc (6031A)
50 Adc (6032A)
5.0 Adc (6035A)
Check that the unit's CC LED remains lighted.
d. Check that the rms noise current measured by the current probe and rms voltmeter is no more than:
15mA rms (6030A).
120mA rms (6031A)
25mA rms (6032A)
50 mA rms (6035A)
30
Figure 2-9. CC PARD Test Setup
Initialization Procedure
Follow the procedure if either the GPIB assembly has been replaced, or the EEPROM (U70) has been replaced:
1. Install the GPIB assembly in the unit.
2. Turn the power on and depending on your unit's model number, send string:
"EEINIT 6030"
"EEINIT 6031''
"EEINlT 6032"
or
''EEINIT 6035"
3. Turn the power off, wait 5 seconds, then turn the power back on.
4. If the GPIB assembly has been replaced, calibrate the unit.
31
3
Troubleshooting
Maintenance described herein is performed with power supplied to the instrument, and protective covers
removed. Such maintenance should be performed only by service-trained personnel who are aware of the
hazards involved (for example, fire and electrical shock). Where maintenance can be performed without
power applied, the power should be removed.
Introduction
Before attempting to troubleshoot this instrument, ensure that the fault is with the instrument itself and not with an
associated circuit. The performance test enables this to be determined without having to remove the covers from the supply.
The most important aspect of troubleshooting is the formulation of a logical approach to locating the source of trouble. A
good understanding of the principles of operation is particularly helpful, and it is recommended that Chapter 4 of this
manual be reviewed before attempting to troubleshoot the unit. Often the user will then be able to isolate a problem simply
by using the operating controls and indicators. Once the principles of operation are understood, refer to the following
paragraphs.
Table 2-1 lists the test equipment for troubleshooting. Chapter 6 contains schematic diagrams and information concerning
the voltage levels and waveforms at many of the important test points. Most of the test points used for troubleshooting the
supply are located on the control board test "fingers", which are accessible close to the top of the board. See Table 3-9.
If a component is found to be defective, replace it and re-conduct the performance test. When a component is replaced, refer
to Calibration Procedure (Chapter 2). It may be necessary to perform one or more of the adjustment procedures after a
component is replaced.
Initial Troubleshooting Procedures
If a problem occurs, follow the steps below in sequence:
a.
b.
c.
d.
e.
Check that input power is available, and check the power cord and rear-panel circuit breaker.
Check that the settings of mode switch A2S1 are correct for the desired mode of operation. (See Operating Manual).
Check that all connections to the power supply are secure and that circuits between the supply and external devices are
not interrupted.
Check that the rear-panel GPIB address switch A8S1 is properly set. (See Operating Manual).
If the power supply fails turn-on self-test or gives any other indication of malfunction, remove the unit from the
operating system before proceeding with further testing.
Some circuits on the power mesh are connected directly to the ac power line. Exercise extreme caution
when working on energized circuits. Energize the supply through an isolation transformer to avoid
shorting ac energized circuits through the test instrument's input leads. The isolation transformer must
have a power rating of at least 4KVA. During work on energized circuits, the safest practice is to
disconnect power, make or change the test connections, and then re-apply power.
Make certain that the supply's ground terminal (┴) is securely connected to an earth ground before
applying power. Failure to do so will cause a potential shock hazard that could result in personal injury.
33
Electrostatic Protection
The following caution outlines important precautions which should be observed when working with static sensitive
components in the power supply.
This instrument uses components which can be damaged by static charge. Most semiconductors can
suffer serious performance degradation as a result of static charges, even though complete failure may
not occur. The following precautions should be observed when handling static-sensitive devices.
a.
b.
c.
d.
e.
f.
Always turn power off before removing or installing printed-circuit boards.
Always stored or transport static-sensitive devices (all semiconductors and thin-film devices) in conductive material.
Attach warning labels to the container or bag enclosing the device.
Handle static-sensitive devices only at static-free work stations. These work stations should include special conductive
work surfaces (such as Agilent Part No. 9300-0797) grounded through a one-megohm resistor. Note that metal table
tops and highly conductive carbon-impregnated plastic surfaces are too conductive; they can act as large capacitors and
shunt charges too quickly. The work surfaces should have distributed resistance of between 106and 10l2 Ω per square.
Ground all conductive equipment or devices that may come in contact with static-sensitive devices or subassemblies
containing same.
Where direct grounding of objects in the work area is impractical, a static neutralizer should be used (ionized air blower
directed at work). Note that this method is considerably less effective than direct grounding and provides less protection
for static-sensitive devices.
While working with equipment on which no point exceeds 500 volts, use a conductive wrist strap in contact with skin.
The wrist strap should be connected to ground through a one-megohm resistor. A wrist strap with insulated cord and
built-in resistor is recommended, such as 3M Co. No. 1066 (Agilent Part No. 9300-0969 (small) and 9300-0970
[large]).
Do not wear a conductive wrist strap when working with potentials in excess of 500 volts; the one-megohm
resistor will provide insufficient current limiting for personal safety.
g.
All grounding (device being repaired, test equipment, soldering iron, work surface, wrist strap, etc.) should be done to
the same point.
h. Do not wear nylon clothing. Keep clothing of any kind from coming within 12 inches of static-sensitive devices.
i. Low-impedance test equipment (signal generators, logic pulsers, etc.) should be connected to static-sensitive inputs
only while the components are powered.
j. Use a mildly activated rosin core solder (such as Alpha Metal Reliacor No. 1, Agilent Part No. 8090-0098) for repair.
The flux residue of this type of solder can be left on the printed circuit board. Generally, it is safer not to clean the
printed-circuit board after repair. Do not use Freon or other types of spray cleaners. If necessary, the printed-circuit
board can be brushed using a natural-bristle brush only. Do not use nylon-bristle or other synthetic-bristle brushes. Do
not use high-velocity air blowers (unless ionized).
k. Keep the work area free of non-conductive objects such as Styrofoam-type cups, polystyrene foam, polyethylene bags,
and plastic wrappers. Non-conductive devices that are necessary in the area can be kept from building up a static charge
by spraying them with an anti-static chemical (Agilent Part No. 8500-3397).
l. Do not allow long hair to come in contact with static-sensitive assemblies.
m. Do not exceed the maximum rated voltages specified for the device.
Repair and Replacement
Repair and replacement of most components in the power supply require only standard techniques that should be apparent to
the technician. The following paragraphs provide instructions for removing certain assemblies and components for which
the procedure may not be obvious upon inspection.
To avoid the possibility of personal injury, remove the power supply from operation before opening the
cabinet. Turn off ac power and disconnect the line cord, GPIB plug, load, and remote sense leads before
attempting any repair or replacement.
34
When replacing any heatsink-mounted components except thermostat, smear a thin coating of heatsink
compound between the component and heatsink. If a mica insulator is used, smear a thin coating of
heatsink compound on both sides of the mica insulator.
Do not use any heatsink compound containing silicone, which can migrate and foul electrical contacts
elsewhere in the system. An organic zinc oxide cream, such as American Oil and Supply Company
Heatsink Compound #100, is recommended.
Most of the attaching hardware in this unit is metric. The only non-metric (sometimes called English or
inch) fittings are listed below. Be careful when both types of screws are removed not to get them mixed
up.
a.
b.
c.
d.
e.
Screws that secure the input and output capacitors to A1 main board and output bus bars.
Rear-panel circuit breaker.
Rear-panel ground binding post.
Strap-handle screws (2).
Screws that secure side chassis to front-frame casting (4, 2 on top and 2 on bottom).
Top Outside Cover Removal. Remove the two top rear screws using a Size 2, Pozidriv screwdriver. A Phillips head
screwdriver does not fully seat into Pozidriv screws and risks stripping the heads. Remove the top cover by sliding it to the
rear and lifting at the front.
Bottom Cover Removal. Remove the handles from both sides of the unit and remove the bottom cover by sliding it to the
rear. Use a Phillips head #2 screwdriver to remove the handle screws. You do not need to remove the unit's feet.
Inside Top Cover Removal. The unit includes an inside cover which secures the vertical board assemblies. Remove the
inside cover for repair but not for calibration.
Remove the nine mounting screws (Pozidriv, M4x.7) -two on the left side, three on the right side, four on top. Remove the
inside cover by lifting at the front edge.
When installing the inside cover, insert it first at the right side. While holding it tilted up at the left, reach through the
cutouts in the cover and fit the top tabs of the A8 GPIB board into the mating slots in the cover. Then repeat the process for
the A2 control board, the A4 FET board, and the A5 Diode board. Press the inside cover down firmly while tightening
screws that secure cover to chassis. Be careful not to bend any boards or components.
A2 Control Board Removal
After removing the inside cover, unplug the W5 and W6 ribbon cables at the top edge of the A2 control board. Then unplug
the W7 and W8 ribbon cables from the lower center of the board. Remove the A2 board by lifting first at the front edge and
than pulling it up and out of the unit.
When installing the A2 board, insert it first at the rear of the unit. While holding it tilted up at the front, fit the A2TB1
terminal strip into the mating cutout in the rear panel. Then lower the A2 board's bottom connectors into the mating
connectors on the main board. Press the A2 board into the connectors, and reinstall the W5, W6, W7, and W8 ribbon
cables.
A4 FET Board Removal
After removing the inside cover, remove the A4 mesh board by lifting, using the large aluminum heatsink as a handle. One
connector and one tab holds the A4 board at its bottom edge.
35
When installing the A4 power mesh board, lower it vertically, placing its tab into the A1 board slot, align the connector and
press in place.
A5 Diode Board Removal
After removing the cover, remove the A5 Diode board by first removing the two screws (Pozidriv) that hold heatsinks to the
A1 board, then lift vertically to remove the A5 board from the connector.
When installing the A5 Diode board, lower it vertically into the mating connector on the A1 board, then install a screw
between each heatsink and Al board.
A8 GPIB Board Removal
Remove the A8 board as follows:
a. Remove the two screws (Pozidriv, M3x.5) which attach the A8 GPIB board to the rear panel. Remove the single screw
(Pozidriv, M4x.7) that secures the GPIB board to the side frame near the front corner.
b. After removing the inside cover, unplug the W5 and W6 ribbon cables at the top edge of the A8 board, the W2 3-wire
cable from connector A8J10 and the W1 ribbon cable from connector A8J9.
c. Remove the A8 board lifting it straight up.
Install the A8 board by reversing the above steps. Lower the rear side of the board into the unit first and fit the bottom tabs
into their mating slots.
A3 Front-Panel Board Removal
Remove the A3 front-panel board by first removing the entire front panel assembly. You do not need to remove the top
cover. Follow this procedure:
a. Remove the top plastic insert by prying up with a flat-blade screwdriver.
b. Remove the four front-panel assembly mounting screws (Pozidriv M4) on the top and bottom at the comers.
c. Gently pull the front-panel assembly away from the unit as far as permitted by the connecting cables.
d. Note the locations of the four power-wire connections to the power switch and then unplug the quick-connect plugs.
e. Unplug the W3 3-wire cable from connector A1J4 on the A2 control board, and unplug the W1 ribbon cable from
connector A8J9 on the A8 GPIB board.
f. Remove the A3 board from the front-panel assembly by removing the six mounting screws (Pozidriv, M4x.7)
Install the A3 Board by reversing the steps above.
A1 Main Board Removal
Removing the A1 main board requires removing the rear-panel, all boards except the A3 front-panel board, and 17 A1
board mounting screws, four standoffs, and two bus bar mounting screws. Component-access cutouts in the bottom inside
cover allow unsoldering most A1-board components for repair without removing the A1 board.
Proceed as follows
a.
b.
36
Remove the A2, A4, A5, and A8 boards according to the above instructions.
Remove the AC power cord from the cooling fan and the four AC Input Power wires.
AC Input Wire
from
L6 (chassis)
RFI filter
Circuit breaker
L6 (chassis)
c.
d.
color
white
white/gray
white/brown/gray
white
Terminal Destination
designator
location
P
left rear
N
behind A1K1
L
behind A1K1
A1K1 front armature
Remove the following mounting screws, all Pozidriv:
2 (1 each) from the output bus bars
7 from the A1 board
4 from transformer AlT2
4 from transformer AlT3
2 from relay AlK1
4 inside-cover mounting posts 5/16 hex
Lift the A1 board up and toward the rear, then remove the wires from the front panel switch A3S1.
A1 Designator
A
B
C
D
Wire color
white/gray
gray
white/brown/gray
white/red/gray
A3S1 Position (Rear View)
S1
B-|-A
C-|-D
Install the A1 board by reversing the above steps. Be careful to follow the wire color code.
Overall Troubleshooting Procedure
The overall troubleshooting procedure for the unit involves isolating the problem to one of several circuit blocks and
troubleshooting the block individually. The GPIB/microprocessor related circuit blocks are located on the A3 (front panel)
and the A8 (GPIB) boards. They are referred to collectively as the GPIB section. The power supply circuit blocks are on the
A1 (main), the A2 (control), the A4 (FET), and the A5 (diode) boards. They are referred to collectively as the power
section.
The flowchart of Figure 3-1 provides troubleshooting isolation procedures to guide you either to the appropriate circuit or to
one of the detailed troubleshooting procedures in this section. The purpose of the flowchart is only to isolate the problem to
a specific area of the power supply. If you have already isolated the problem, proceed directly to the applicable
troubleshooting section.
Table 3-1 lists the error codes that may appear on the front panel when the unit performs its internal selftest. Along with the
error codes, the table also identifies various circuits or components that may have caused that error code to appear.
In the Power Section Troubleshooting, Tables 3-10 and 3-11 give various power supply symptoms that identify the
corresponding board, circuit or components that may have caused that symptom. The symptoms in Table 3-10 may become
apparent when running the Performance Tests in Section 2.
GPIB Section Troubleshooting
The GPIB section troubleshooting consists of primary and secondary interface troubleshooting. Signature analysis is
required to troubleshoot the primary and secondary processor as well as the front panel board. Other circuits on the GPIB
board, such as the voltage and current DACs, can be checked using either signature analysis or the front panel controls. The
readback circuits cannot be checked using signature analysis. Figure 3-2 illustrates the test setup that allows access to the
GPIB board components for troubleshooting.
37
Figure 3-1. Troubleshooting Isolation
38
Figure 3-1. Troubleshooting Isolation (continued)
39
To remove the GPIB board, perform the GPIB board removal procedure discussed earlier in this section. Lay out the board
as shown in Figure 3-2 with a piece of insulating material under the board. Reconnect connectors W1, W2, W5, and W6
after the board is on the insulating material.
Note:
The GPIB board can be placed alongside the unit for troubleshooting by using extender cables provided in
service kit Agilent P/N 06033-60005.
Table 3-1. Selftest Error Code Troubleshooting
Error Code
ERROR 4
ERROR 5
ERROR 6
ERROR 7
ERROR 8
ERROR 10
ERROR 12
ERROR 13
ERROR 14
ERROR 15
ERROR 16
ERROR 17
ERROR 18
ERROR 19
ERROR 20
Description
External RAM Test
Internal RAM Test
External ROM Test
GPIB Test
GPIB address set to 31
Internal ROM Test
ADC Zero Too High
Voltage DAC Full Scale Low
Voltage DAC Full Scale High
Voltage DAC Zero Low
Voltage DAC Zero High
Current DAC Full Scale Low
Current DAC Full Scale High
Current DAC Zero Low
Current DAC Zero High
Check Functional Circuit
Replace A8U8
Replace A8U14
Replace A8U6
Replace A8U17
Replace A8U4
Check U11,20,24,66,67; go to Readback DAC Troubleshooting
┐
Check U2,7,64,69
│
Check U2,7,64,69
│
Check U2,7,64,69
│
Go to Secondary SA
Check U2,7,64,69
├─
Troubleshooting
Check U9,65,68
│
Check U9,65,68
│
Check U9,65,68
│
Check U9,65,68
┘
Primary Interface Troubleshooting
Primary interface troubleshooting checks for the presence of bias voltages, clock signals (see Figure 3-3), and activity on the
data lines. Primary signature analysis may be used to further troubleshoot these circuits, but since the address and data lines
go to so many IC's, it may not be cost-effective to narrow an incorrect signature to a specific chip. GPIB board replacement
may be the most cost-effective solution.
Note:
The initialization procedure in Page 31 must be performed when the GPIB board is replaced.
Figure 3-2. GPIB Board Test Setup
40
+5V and PCLR Circuits:
Node
U1-8
U1-2
U1-3
U1-4
U1-6
Measurement
≈ 3.5Vdc
= 4 Vdc
= 4.2Vdc
= 4.2Vdc
≈50mVdc
Clock Signals (see clock waveforms in Figure 3-3)
Node
C7+,C8+
J5-8
U35-12
Measurement
= 12MHz (see waveform)
= 6MHz (see waveform)
≈ 50mVdc (see waveform)
Source
Y2
U14
U35
Data Lines Check that all data and address lines are toggling. Address and data lines go to the following IC's:
Address Lines
U6: A0 to A15
U8: A0 to A15
U12: A0 to A4
U14: A8 to A15
U16: A0 to A7
U17: A0 to A2
U36: A7 to A15
Note:
Node
A0 to A15
D0 to D7
Data Lines
U6: D0 to D7
U8: D0 to D7
U12: D0 to D7
U14: D0 to D7
U16: D0 to D7
U17: D0 to D7
Data and address lines may not toggle if one line is shorted either high or low. If no short is found, replace
all socketed IC's. If the data lines still do not toggle, replace the GPIB (A8) assembly.
Measurement
Toggling
Toggling
Secondary Interface Troubleshooting
Secondary interface troubleshooting checks the operation of the voltage, current, and readback DACs as well as analog
multiplexer and secondary microprocessor. The analog multiplexer is checked in the Readback DAC troubleshooting
procedure. The secondary microprocessor can only be checked using secondary SA (refer to Signature Analysis).
Voltage and Current DAC
The voltage and current DACs can be checked either from the front panel or by secondary SA. Refer to Signature Analysis
to troubleshoot the voltage and current DACs in this manner.
Note:
To troubleshoot the voltage and current DACs from the front panel if the unit has failed selftest, place
jumper A8J5 in the skip selftest position (see Table 3-2). This lets you operate the unit even though it fails
the internal selftest.
41
Figure 3-3. Clock and Primary SA Waveforms
42
Use the front panel controls to vary the output voltage and current from zero to full-scale output. Remember to turn off the
unit and connect a short across the output before programming the current from zero to full scale. Use a DMM and check
the voltages at the following nodes:
CV DAC Circuits
Node
U69-6
Setup
Voltage set to 0.
Voltage set to max.
Measurement
0V
+ 5V
U64-6
Voltage set to 0.
Voltage set to max.
0V
-10V
CC DAC Circuits
Node
U68-6
Setup
Current set to 0.
Current set to max.
Measurement
0V
+ 5V
U65-6
Current set to 0.
Current set to max.
0V
-10V
Readback DAC Circuits
Refer to Figure 3-4 for the waveforms to troubleshoot the readback circuits.
The turn-on selftest waveform at U24-7 is obtained by toggling the on/off switch repeatedly to perform the selftest routine.
If this waveform is not correct, isolate the problem either to the readback DAC or the multiplexer.
Note:
To troubleshoot the readback DAC from the front panel if the unit has failed selftest, place jumper A8J5 in the
skip selftest position (see Table 3-2). This lets you operate the unit even though it fails the internal selftest.
Use the front panel controls to vary the output voltage from zero to full-scale output to obtain the waveforms at U67-6.
These waveforms check the operation of the readback DAC.
To check the multiplexer, use the front panel controls to obtain the waveforms at the output of the multiplexer (U24-2).
Remember to turn off the unit and connect a short across the output before programming the current from zero to full scale.
Press "OVP DISPLAY'' on the front panel to display the OV_MON portion of the waveforms.
If the waveforms are not correct, use the front panel controls and a DMM to check the multiplexer input voltages at the
following nodes:
Readback Multiplexer (U20):
Node
U20-9
Setup
Voltage set to 0.
Voltage set to max.
Measurement
0V
+ 5V
U20-10
Current set to 0.
Current set to max.
0V
+ 5V
U20-11
OV set to 0.
OV set to max.
0V
+2.2V
43
Figure 3-4. Readback and Secondary SA Waveforms
44
Signature Analysis
Perform the signature analysis only after you have completed the Primary Processor Troubleshooting.
The easiest and most efficient method of troubleshooting microprocessor-based instruments is signature analysis. Signature
analysis is similar to signal tracing with an oscilloscope in linear circuits. Part of the microcomputer memory is dedicated to
signature analysis and a known bit stream is generated to stimulate as many nodes as possible within the circuit. However,
because it is virtually impossible to analyze a bit stream with an oscilloscope, a signature analyzer is used to compress the
bit stream into a four-character signature that is unique for each node. By comparing signatures of the unit under test to the
correct signatures for each node, faults can usually be isolated to one or two components. Note that signature analysis
provides only go/no-go information; the signature provides absolutely no diagnostic information.
The following general notes apply to signature analysis of the power supply.
1.
2.
3.
4.
5.
6.
Be certain to use the correct setup for the signature being examined.
Most signatures are taken on the GPIB, and front panel assemblies.
Note the signatures for Vcc and ground on the I.C. being examined. If an incorrect signature is the same as that of Vcc
or ground, that point is probably shorted to Vcc or ground.
If two pins have identical signatures, they are probably shorted together. If two signatures are similar, it is only
coincidence. For example, if the signature at a certain point should be 65C4, a signature of 65C3 is not "almost right".
No diagnostic information can be inferred from an incorrect signature.
If a signature is incorrect at an input pin, but is correct at its source (output of previous I.C.), check for printed circuit
and soldering discontinuity.
An incorrect signature at an output could be caused by a faulty component producing that output; or, a short circuit in
another component or on the board could be loading down that node.
Tables 3-2 and 3-3 show the primary, front panel, and secondary signature analyzer connections that are required to perform
the SA tests in Tables 3-4 through 3-8. Remember that the primary and secondary circuits each reference a different circuit
common.
Primary SA
Place the unit in primary SA mode by moving the J5 jumper as shown in Table 3-2. Connect the signature analyzer as
shown in the table. The front panel display should indicate: ''SA SA", and all LED's will be on. If the display is different,
replace U14.
Note:
The power supply will not go into SA mode if one of the data and address lines is shorted either high or
low. Refer to Data Lines troubleshooting.
When the unit is in SA mode, check for the waveforms shown in Figure 3-3. Refer to Table 3-4 for the primary SA
signatures. Return the J5 jumper to its normal position when the primary signature analysis is complete.
Front Panel SA
To place the unit in SA mode for Front Panel SA troubleshooting, follow the procedure for Primary SA troubleshooting.
When the unit is in SA mode, check the signatures in Tables 3-5 through 3-7.
The signatures in Table 3-5 check the registers that drive the 7-segment LED displays. Most problems will involve only one
display or LED indicator. Table 3-6 checks the address latches and decoders. Address latch U15 forwards address data to
the address decoders, which enable the shift registers. Table 3-7 checks flip-flop U12, shift register U11, and gate U18. U12
decodes the output of the RPG. U11 and U18 are used by the microprocessor to read the status of the RPG and front panel
switches.
45
Return the J5 jumper to its normal position when the front panel signature analysis is complete.
Secondary SA
For secondary SA troubleshooting, connect the signature analyzer as shown in Table 3-3. Use a jumper wire and short U4
pin 21 to common (U4 pin 20). Check for the waveforms in Figure 3-4 and the signatures in Table 3-8 for the secondary
SA. When the secondary signature analysis is complete, disconnect the jumper on U4 pin 21.
Table 3-2. Primary and Front Panel Signature Analyzer Test Setups
SIGNATURE
EDGE
ANALYZER INPUT
SETTING
CLOCK
START
STOP
GROUND
A8J5 (in SA mode)
PRIMARY SA
CONNECTIONS
A8J5 pin 8
A8U37 pin 16
A8U37 pin 16
A8J5 pin 5
A8J5 JUMPER POSITIONS
Jumpering pins 1 and 2 skips the internal
selftest when the unit is turned on.
Jumpering pins 3 and 4 places U37 in SA mode.
Jumpering pins 5 and 6 is the normal/operating
position of the jumper.
Table 3-3. Secondary Signature Analyzer Test Setups
SIGNATURE
ANALYZER INPUT
CLOCK
START
STOP
GROUND
EDGE
SETTING
SECONDARY SA
CONNECTIONS
A8U4 pin 23
A8U4 pin 22
A8U4 pin 22
A8U4 pin 20
A8U4 JUMPER POSITIONS
Use a jumper wire and connect A8U4 pin 21 to pin 20 (ground).
Use a 40-pin test clip (Pomona Model 5240 or eq.) to facilitate test
connections to A8U4.
46
Table 3-4. Primary Processor Signature Table
(A8U6 = P/N 5080-2160 REV A.00.00, A.00.01, A.00.02 and A.00.04)
A(0)
A(1)
A(2)
A(3)
A(4)
A(5)
A(6)
A(7)
A(8)
A(9)
A(10)
A(11)
A(12)
A(13)
A(14)
A(15)
A.00.04
A46A
4148
72F5
PAU8
A4A7
45OP
C3UU
HOU4
4U39
45A8
278A
6OA3
7826
5850
F93H
79UA
A.00.02
A46A
UH8O
82H5
9899
3088
48H5
UF3H
HOU4
4U39
45A8
278A
6OA3
7826
5850
F93H
79UA
A.00.01
A46A
UH8O
UO39
HOPF
O7FA
5823
2682
F6OP
17AF
62H1
OOU3
6OA3
7826
5850
F93H
79UA
A.00.00
A46A
UH8O
4FU1
86C2
5A37
PHHO
3F6U
HFP3
17AF
62H1
OOU3
6OA3
7826
585O
F93H
79UA
U14-52
U14-51
U14-50
U14-49
U14-48
U14-47
U14-46
U14-45
D(0)
D(1)
D(2)
D(3)
D(4)
D(5)
D(6)
D(7)
PH2F
HU9O
U665
53PP
C9C2
C27C
HO18
P97H
48P2
6O84
74UH
16A9
196F
132C
4387
4FC3
48P2
6O84
96C5
UH79
AA13
8A9F
497F
33AO
48P2
6O84
HA6P
8OC2
U64C
89AP
2C5F
U44P
U14-60
U14-59
U14-58
U14-57
U14-56
U14-55
U14-54
U14-53
WR*
RD*
ALE
READY
FP65
unstable
U665
26C3
FP65
3PPH
4OAP
26C3
FP65
3PPH
4OAP
26C3
FP65
3PPH
4OAP
26C3
U14-40
U14-61
U14-62
U14-43
BANK_SEL
unstable
5AHH
unstable
unstable
U14-27
EE(0)
EE(1)
EE(2)
EE(3)
7CF1
AH32
HCCH
9P5F
7CF1
AH32
HCCH
9P5F
7CF1
AH32
HCCH
9P5F
7CF1
AH32
HCCH
9P5F
U14-19
U14-20
U14-21
U14-22
APC
UART
GPIB
ROM
RAM
9361
CHU5
2688
C95F
9UPU
9361
CHU5
2688
C95F
9UPU
9361
CHU5
2688
C95F
9UPU
9361
CHU5
2688
C95F
9UPU
U14-23
U16-12
U16-13
U16-14
U16-15
U16-16
U16-17
U16-18
U16-19
U6-12
U6-11
U6-10
U6-9
U6-8
U6-7
U6-6
U6-5
U6-27
U6-26
U6-23
U6-25
U6-4
U6-28
U6-29
U6-3
U8-12
U8-11
U8-10
U8-9
U8-8
U8-7
U8-6
U8-5
U8-27
U8-26
U8-23
U8-25
U8-4
U8-28
U8-3
U8-31
U12-11
U12-13
U12-9
U12-10
U12-8
U16-9
U16-8
U16-7
U16-6
U16-5
U16-4
U16-3
U16-2
U6-13
U6-14
U6-15
U6-17
U6-18
U6-19
U6-20
U6-21
U8-13
U8-14
U8-15
U8-17
U8-18
U8-19
U8-20
U8-21
U12-22
U12-21
U12-20
U12-19
U12-18
U12-17
U12-16
U12-15
U6-24
U8-29
U8-24
U17-21
U17-22
U17-23
U36-11
U36-9
U36-8
U36-7
U36-6
U36-5
U36-4
U36-3
U36-2
U36-1
U17-12
U17-13
U17-14
U17-15
U17-16
U17-17
U17-18
U17-19
U36-12
U36-13
U16-11
U36-15
U36-14
U70-1
U70-2
U70-3
U704
U15-22
U12-14
U6-22
U8-22
U36-16
U36-17
U36-19
U36-18
U17-8
47
Table 3-5. Front Panel LED Display and Indicator Drivers
(A8U6 = P/N 5080-2160 REV A.00.00, A.00.01, A.00.02 and A00.04 Inputs)
Inputs:
Node
U1 to U10-1
U1 to U10-9
U1 to U10-2,14
U1 to U10-7
U1-8
U2-8
U3-8
U4-8
U5-8
U6-8
U7-8
U8-8
U9-8
U10-8
Measurement
6H15
Cycle power to unit--Lo to Hi after approx. 160 ms
+5V
common
F05U
50A9
6F42
AH52
51U7
PHFF
5730
8U73
HU9C
5AHH
Outputs:
Current Display
Voltage Display
$KKKKKKK%KKKKKKKKK&
pin 3
pin 4
pin 5
pin 6
pin 10
pin 11
pin 12
pin 13
48
U1
5AHH
5AHH
5AHH
5AHH
5AHH
5AHH
5AHH
5AHH
U2
102A
92FF
4FUC
94F0
102A
92FF
4FUC
94F0
U3
4A3F
C665
5526
C4A9
A73P
PFP6
163C
lAP8
U4
5AHH
5AHH
5AHH
5AHH
5AHH
5AHH
5AHH
5AHH
$KKKKKKK%KKKKKKKKK&
U5
5AHH
5AHH
5AHH
5AHH
5AHH
5AHH
5AHH
5AHH
U6
4U91
31U5
739H
5724
4U91
31U5
739H
5724
U7
7499
4475
P7AH
OUC4
1467
U810
HA84
C4HC
U8
5AHH
5AHH
5AHH
5AHH
5AHH
5AHH
5AHH
5AHH
U9
CHP5
P3PP
H8HC
84PU
5UAU
U7A8
A60U
56PA
U10
0000
0000
0000
0000
0000
0000
0000
0000
Table 3-6. Front Panel Address Latches and Decoders
(A8U6 = P/N 5080-2160 REV A.00.00, A.00.01, A.00.02 and A.00.04 Inputs)
Inputs:
Node
U14-26
U14-35
U14-38
Measurements
Toggling (unstable)
37F8
1ABC
U15-9, U17-3,6
U17-4,5
Cycle power to unit--Lo to Hi after approx. 160 ms
Cycle power to unit--Hi to Lo after approx. 160 ms
Outputs:
U13-1, U14-1, U15-3
U13-2, U14-2, U15-4
U13-3, U14-3, U15-5
U13-4, U14-4, U17-11
U13-5, U16-3
U13-6, U14-6, U17-9
U13-7
U13-9
U13-10
U13-11
U13-12
U13-13
U13-14
U13-15
969U
C7AA
A372
Toggling
5C91
1ABC
8U73
5730
PHFF
51U7
AH52
6F42
50A9
F05U
U14-5, U16-6
U14-13
U14-14
U14-15
U15-1, U17-2
U15-2
U15-3
U15-6, U16-2, U17-3
U15-8, U16-11
U15-10, U16-1,4,10
F615
Toggling
5AHH
HU9C
6H15
+5V
U16-5, U17-12
U16-12, U17-8
U16-13, U17-10
U17-1
U17-2
9C3C
4056
Toggling
37F8
FlP6
P62F
9H84
49
Table 3-7. Front Panel RPG Latches and Input Port
(A8U6 = P/N 5080-2160 REV A.00.00, A.00.01 A.00.02, and A.00.04)
Inputs:
Node
U11-1
U11-2 U12-4,10
U16-10
Measurement
1ABC
Toggling (unstable)
9H84
Procedure:
Node
S1 LCL
S1 LCL
released
depressed
U11-13 Lo
U11-13 Hi
U11-7, U16-9
U11-7, U16-8,9
Lo
Toggling
U16-8 Hi
S2 OUTPUT ADJUST
S2 OUTPUT ADJUST
released
depressed
U11-14 Lo
U11-14 Hi
U11-7, U16-9
U11-7, U16-8,9
Lo
Toggling
U16-8 Hi
S3 DISPLAY OVP
S3 DISPLAY OVP
released
depressed
U11-3 Lo
U11-3 Hi
U11-7, U16-9
U11-7, U16-8,9
Lo
Toggling
U16-8 Hi
S4 DISPLAY SETTINGS
S4 DISPLAY SETTINGS
released
depressed
U11-4 Lo
U11-4 Hi
U11-7, U16-9
U11-7, U16-8,9
Lo
Toggling
U16-8 Hi
S5 FOLDBACK
S5 FOLDBACK
released
depressed
U11-5 Lo
U11-5 Hi
U11-7, U16-9
U11-7, U16-8,9
Lo
Toggling
U16-8 Hi
U12-5
Node toggles when RPG is rotated clockwise
U12-9
Node toggles when RPG is rotated in either direction
Set scope for dual trace operation, 2V/div, 10 ms/div, normal triggering, and positive edge on channel A.
Connect channel A to U12-3 and channel B to U12-2.
U12-3
Rotate RPG CW
U12-2
Rotate RPG CW
U12-3
Rotate RPG CCW
U12-2
Rotate RPG CCW
50
Table 3-8. Secondary Processor Signature Table
DS(0)
DS(1)
DS(2)
DS(3)
DS(4)
DS(5)
DS(6)
DS(7)
DS(8)
DS(9)
DS(10)
DS(11)
P36U
2280
4277
720F
6A31
662U
6020
6327
1377
FF99
236P
H495
U4-1
U4-2
U4-3
U4-4
U4-5
U4-6
U4-7
U4-8
U4-39
U4-38
U4-37
U4-36
U7-15
U7-14
U7-13
U7-12
U7-11
U7-10
U7-9
U7-8
U7-7
U7-6
U7-5
U7-4
WR*
WR*
WR*
9FU7
9FF7
9FHU
F817
36U7
0562
9F97
9FH6
9FH5
0000
AU68
9FA8
U4-12
U4-13
U4-14
U4-26
U4-27
U4-28
U4-11
U4-17
U4-16
U4-30
U4-35
U4-33,34
U7-17
ISTX
ALE
+ 5V
U9-15
U9-14
U9-13
U9-12
U9-11
U9-10
U9-9
U9-8
U9-7
U9-6
U9-5
U9-4
U11-15
U11-14
U11-13
U11-12
U11-11
U11-10
U11-9
U11-8
U11-7
U11-6
U11-5
U11-4
U2-16
U2-17
U2-18
U2-19
U9-17
U11-17
U20-1
U20-16
U20-15
U2-4, 14
U2-2
U2-11
U2-1
Power Section Troubleshooting
Table 3-9 describes the signals at each of the control board test points. The test connector provided in service kit P/N
5060-2865 allows easy connection to each test point. The measurements given here include bias and reference voltages as
well as power supply status signals. It provides conditions for these measurements and gives the components which are the
sources of the signals. Tables 3-10 and 3-11 describe possible symptoms in the power section. Both give lists of circuit
blocks or components which can cause the symptoms shown. The appropriate assembly is also given.
If the supply exhibits a symptom given in Table 3-10 or 3-11, go to the block which pertains to that symptom. If the exact
symptom seen is not in the tables, start with the symptom that seems to be closest to the one observed. The blocks are given
in the Power Section Blocks section starting in Paragraph 3-84. Troubleshooting information for each block will include a
brief description of the circuit. The columns provided are as follows:
NODE:
This column lists the nodes where the measurements should be taken. In some cases this will be
stated as NODE( + ) and NODE(-) where the first is the test node and the second is the reference.
SETUP:
If a certain setup is required for the measurement, it will be given in this column.
MEASUREMENT:
This column indicates what the expected measurement is for the given node.
SOURCE:
If applicable, the components which generate the signal will be provided in this column.
51
The A4 FET Board should only be raised on an extender when using the main troubleshooting setup.
NEVER use a FET Board extender when the unit is operated with its normal ( ≈ 320Vdc) bus voltage. To
do so is a personal shock hazard and can damage the power supply.
To troubleshoot the power supply the A4 power FET board and A2 control board can be raised out of the unit using
extender boards and cables provided in service kit P/N 5060-2865.
Main Troubleshooting Setup
Figure 3-5 shows the troubleshooting setup for troubleshooting all of the unit except the front panel and initial no-output
failures (see Paragraph 3-82). The external power supply provides the unit's internal bus voltage. The ac mains connects
directly to the unit's A1T3 bias transformer via the isolation transformer, thereby energizing the bias supplies, but it does not
connect to the input rectifier and filter to create the bus voltage. With the external supply the unit operates as a dc-to-dc
converter. The supply biases A4Q1, A4Q2, A4Q3, and A4Q4 PFETs with a low voltage rather than the 320Vdc bus
voltage. This protects the PFETs from failure from excess power dissipation if the power-limit comparator or the off-pulse
circuitry are defective. It also reduces the possibility of electrical shock to the troubleshooter.
Figure 3 5. Main Troubleshooting Setup
52
An isolation transformer provides ac voltage that is not referenced to earth ground, thereby reducing the
possibility of accidentally touching two points having high ac potential between them. Failure to use an
isolation transformer as shown in Figure 3-5 will cause the ac mains voltage to be connected directly to
many components and circuits within the power supply, including the FET heatsinks, as well as to the
terminals of the external dc power supply. Failure to use an isolation transformer is a definite personalinjury hazard.
The troubleshooting setup of Figure 3-5 connects high ac voltage to relay K1, fan B1, fuseholder A1F1, and
other components and circuits along the front of the A1 main board.
As a convenience in implementing the troubleshooting setup, modify a spare mains cord set as shown in Figure 3-6. This
facilitates connecting the unit's power receptacle to the external supply and connecting the bias transformer to the ac mains.
With the mains cord unplugged proceed as follows:
a.
Remove the top cover and the inside cover per Page 35. Remove fuse A1F1.
Failure to remove fuse AlF1 will result in damage to the power supply, damage to the external dc supply,
and is an electrical shock hazard to you.
a.
b.
c.
Install control board test connector onto the A2J7 card-edge fingers.
Connect a 50Ω 10-W load resistor to the unit's output terminals.
The external dc power supply can be connected to the unit in either of two ways (in either case, the front panel LINE
switch should be off):
1.
Remove white/gray wire from main board terminal marked "N'' (at left side, just behind relay at front left
corner), and remove white/brown, gray wire from terminal "L". Connect external dc power supply to terminals
"N" and "L''. Either polarity is correct.
OR
2.
Ensure that the rear-panel circuit breaker is on. Connect external dc power supply to ac input terminals ''N"
and ''L''. Either polarity is correct.
e.
Complete the setup of Figure 3-5 by attaching an ac mains cord to test points J8 (L, black wire) and J7 (N, white wire)
and connect the green ground wire to the unit's case ground terminal or a suitably grounded cabinet screw. Connect the
mains cord to an isolation transformer.
Troubleshooting No-Output Failures
No-output failures often include failure of the A4Q1, A4Q2, A4Q3, and A4Q4 PFETs and their fuses A4F1 and A4F2.
When either the off-pulses or the power-limit comparator fails, the PFETs can fail from excessive power dissipation. The
strategy for localizing no-output failures is to check the voltages and waveforms at the control board test connector to
predict if that circuit failure would cause the FETs to fail. This makes it possible to develop your troubleshooting approach
without an extensive equipment setup. Proceed as follows:
a.
b.
c.
d.
With the mains cord disconnected remove the A4 FET board per Page 36. Connect the mains cord and switch on
power.
Using Table 3-9 check the bias voltages, the PWM-OFF and PWM-ON Control signals and other signals of interest at
the A2 control board test fingers, A2J7.
Check for the presence of program voltages, VP and IP, at the rear panel.
Check for presence of the 320Vdc rail voltage with + at the rear facing end of AlR3 and - at the rear facing end of
AlR1. If there is no rail voltage, check AlU1.
53
AlR1, AlR3, and AlU1 connect to the ac mains voltage. Use a voltmeter with both input terminals floating
to measure the rail voltage.
a.
Select the functional circuit for troubleshooting based on your measurements and Table 3-11, which provides direction
based on the status of the PWM OFF and PWM ON signals.
Figure 3-6. Modified Mains Cord Set For Troubleshooting
Power Section Blocks
This section contains the blocks referenced in Tables 3-10 and 3-11.
54
Table 3-9. Control Board Test Connector, A2J7
PIN NO.
SIGNAL NAME
Digital-Circuits Bias & Reference Voltages
24
+5V
22
+ 20V(5V UNREG)
14
2.5V ref
6
0.5V ref
Analog-Circuits Bias Voltages
2
+ 15V
21
-15V
Vdc
5.0
20.0
2.50
0.50
WAVEFORM/CONDITIONS
with 120Hz & 45KHz ripple
15.0
-15.0
SOURCE
A2Q9 (emitter)
AlCR6, AlCR7
A2U7 (OUT)
A2R24,A2R84, A2R85
A2U11 (OUT)
A2U12 (OUT )
Status Signals
17
CV
16
CC
13
OV
11
AC FAULT
TTL Lo
TTL Lo
TTL Hi
TTL Hi
if in CV operation
if in CC operation
if not OVP shutdown
if ac mains okay
A2Q2 (collector)
A2Q1 (collector)
A2U15-13
A2U15-10
12
TTL Hi
if not overtemp shutdown
A4TS1,A5TS1
A2U16-5
A2U15-1
A2CR27 (cathode)
TTL Hi
1.2-3.0
10µs TTL pulses, 20KHz
1.7µs TTL pulses, 20KHz
1V pk, ½ sawtooth, 20KHz
(at full power only)
if not remotely inhibited
while not down programming
OT
Control Signals
25
PWM OFF
26
PWM ON
18
Ip MONITOR
8
15
INHIBIT
DOWN PROGRAM
7
OVP PROGRAM
5
OV CLEAR
19
PCLR
Commons & Current-Monitor
4
COMMON
9
10
COMMON
I-TEST
3
V-MON-BUF
20
Ip-SET
1/100 OVP (6030A)
1/10 OVP (6031A)
1/30 OVP (6032A)
1/250 OVP (6035A)
+5V
A2U18-9
A2CR17, CR31(anode)
e.g.: 2 Vdc if OVP set to full
voltage output
A3R72 (wiper)
inverted OV reset line
A8U4-35
+5V
if +5V bias OK
A2Q11-4
0.0
return for all bias voltages,
status and control signals
return for 2.5V and 0.5V ref
inboard-side monitoring res
0.0
≈0.013*I0UT(6030A/35A).
≈0.0017* IOUT (6031A)
≈0.0037* IOUT (6032A)
V-OUT/4 (6031A)
V-OUT/12 (6032A)
V-OUT/40 (6030A)
V-OUT/100 (6035A)
≈0.9
buffered V-MON for readback
A1R11,A1T2
(AlR13 (6032A))
A8U25-6
A2R25 wiper
55
Table 3-10. Performance Failure Symptoms
SYMPTOMS
unexplained OVP shutdowns
no current limit
max current < specified
max power < specified
max voltage < specified
cycles on & off randomly
DEFECTIVE
BOARD
A2
A2
A2
A2, A1
A2, A1
A2, A1
CV overshoots
output noise (<1KHz)
output noise (>1KHz)
A2
A2,A1
A1, A4
CV regulation, transient
response, programming time
CC regulation
CV oscillates with capacitive
loads
CC oscillates with inductive
loads
A2, A1
A2
A2
A2
CHECK FUNCTIONAL CIRCUITS
OVP circuit, CV circuit
CC circuit
CC Clamp, CC circuit
Power Limit, 20KHz clock, transformer AlT1
CV Circuit, diodes A1CR1-CR4
AC-Surge-&-Dropout Detector, Mains Voltage
Select switch A1S2
A2U5A, A2CR19, A2R62
CV circuit, input filter
transformer AlT2, Output Filter, snubbers A4R1 to
A4R11, A4R13 to A4R19, A4C1 to A4C4, A4CR2,
A4CR3, A2R15, A2C2
wrong sensing
low ac mains voltage, CV circuit
low ac mains voltage, CC circuit
A2R61, A2R60, A2R58, A2R59, A2C33, A2R64,
A2R68, A2C36, A2C37, A2U5, A2R65
A2R61, A2R60, A2R58, A2R57, A2C33, A2R19
A2C11, A2R28, A2C12, A2U4, A2R35, A2C20,
A2U4, A2R37, A2C17, A2R29, A2C18, A2R31
Table 3-11. No-Output Failures
(Bias supplies and AC turn-on circuit functioning)
Status of FET On/Off-Pulses
PWM-ON
PWM-OFF
DEFECTIVE
CHECK FUNCTIONAL CIRCUITS
A2J7-26
A2J7-25
BOARD
Lo
Lo
A2
Control ckts: CV & CC thru On- & Off-Pulse Oneshots *
Lo
Hi
A2&A4
PWM and DC-to-DC Converter: A4 PFETS probably failed
Hi
Lo
A2&A4
PWM and DC-to-DC Converter: A4 PFETS probably failed
Hi
Hi
A2&A4
PWM and DC-to-DC Converter: A4 PFETS probably failed
Lo
N
A2
A2U15A, On-Pulse Oneshot and Q11
N
Lo
A2&A4
Off-Pulse Oneshot and DC-to-DC: A4 PFETS probably failed
Hi
N
A2&A4
A2U15A, On-Pulse Oneshot & DC-to-DC: A4 PFETS probably failed
N
Hi
A2&A4
Off-Pulse Oneshot and DC-to-DC: A4 PFETS probably failed
N
N
A2&A4
Power-Limit Comparator and DC-to-DC: A4 PFETS probably failed
Lo= TTL low
Hi= TTL high
N= normal 20KHz pulse train, TTL levels
* Decide which to troubleshoot--the CV circuit, the CC circuit, or the PWM and Off-Pulse & On-Pulse Oneshots-- by
measuring the CV CONTROL (A2CR24, cathode) and the CC CONTROL (A2CR11 cathode) voltages. Troubleshoot
whichever is negative, and if neither is negative, troubleshoot the PWM. Make these voltage measurements after you
have implemented the Main Troubleshooting Setup.
56
Troubleshooting AC-Turn-On Circuits
Relay AlK1 closes at 2.5 seconds and AC FAULT goes high at 2.9 seconds after 21V UNREG reaches about 13Vdc.
AC FAULT high enables the PWM if OVERVOLTAGE , INHIBIT , and OVERTEMP are also high.
Circuits Included. High AC and AC Dropout Detectors, Bias Voltage Detector, Q11A, 3-Second Delay and Relay Driver-all on A2 control board.
Setup. The Main Troubleshooting Setup, Page 53. Apply the ac mains voltage to the isolation transformer, and set the
external supply to 0Vdc.
Inputs:
NODE (+) *
A2J7-24
A2J7-22
A2Q11-16
A2U20-13
SETUP
MEASUREMENT
5.0Vdc
≈ 21Vdc
f.w.rect,0.8V pk
TTL sq wave,20KHz
SOURCE
A209 (emit.)
A1CR2,A1CR5
A1CR3,A1CR4
A2U20-6
SETUP
cycle power
cycle power
cycle power
cycle power
cycle power
cycle power
cycle power
cycle power
MEASUREMENT
≈ 13.5Vdc
≈ 1.4Vdc
transition 0 to 5Vdc at 25 sec
Hi (5Vdc)
2.9 s burst 1.25KHz sq. wave
one 840ms pulse then Hi at 2.5 sec
three 420 ms pulses then Hi at 2.9 sec
transition Lo to Hi at 1.7 s
transition Lo to Hi at 2.9 s
cycle power
transition 5.0 to 0.3Vdc at 2.5 sec
Outputs:
NODE (+) *
A2U17-9
A2U17-14
A2Q11-14
A2Q11-4
A2U9-10
A2U9-15
A2U9-14
A2U9-1
A2U15-10
( AC FAULT )
A2Q7-C
RELAY ENABLE
*Node( - ) = A2J7-4
Troubleshooting DC-To-DC Converter
Parallel NOR gates A4U1, A4U2 and A4U3A act as drivers and switch on FETs A4Q1,Q2,Q3 and Q4 through pulse
transformer A4T1. NOR gate A4U3B turns off the FETs through pulse transformer A4T2 and transistors A4Q5 and A4Q6.
Circuits Included. On-Pulse Driver, Off-Pulse Driver, FET Switches and Drivers on A4 FET board.
Setup. The Main Troubleshooting Setup, Paragraph 3-40. Apply the ac mains voltage to the isolation transformer, set the
external supply to 40Vdc, and switch on the LINE switch. Set the unit's output voltage to 20Vdc and current to above 1Adc.
Using the DISPLAY SETTINGS switch. Verify that the OVERRANGE LED lights. See Figure 3-7 for waveforms.
57
Inputs:
NODE (+)
A2J7-26(PWM-ON)
A2J7-25(PWM-OFF)
NODE (-)
M
M
MEASUREMENT
1.7µs, 20KHz pulse(see Waveform #1)
10µs, 20KHz pulse(see Waveform #2)
SOURCE
A2Ul5-l,A2J5 11, A4P1-A3
A2U16-5,A2J5-13,A4P1-A2
NODE (+)
A4P1-C1
A4Q2-D
NODE (-)
A4P1-A1
A4Q4-S
MEASUREMENT
10.6Vdc
39Vdc
SOURCE
AlU3-2
A1C51 ( + ),A4P1-22 to 25
A1Cl( - ),A4P1-16 to 18
Outputs:
NODE (+)
A4Q1/Q2-G
A4Q3/Q4-G
A4Q2-S
A2J7-18
NODE (-)
A4Q2-S
A4Q4-S
A4Q4-D
A2J7-4
MEASUREMENT
(see Waveform #3)
(see Waveform #3)
(see Waveform #4)
(see Waveform #5)
If you replace the FETs, replace both the FETs and associated drive components as furnished in FET Service Kit. Agilent
Part No. 5060-2866.
The FETs are static sensitive and can be destroyed by relatively low levels of electrostatic voltage.
Handle the A4 FET board and the FETs only after you, your work surface and your equipment are
properly grounded with appropriate resistive grounding straps. Avoid touching the FET's gate and
source pins.
Troubleshooting Bias Supplies
+5V On A2 Control Board. The PWM A2U22 includes a clock generator (40KHz set by A2R170, A2C79 and A2Q10),
and a current limit (2Adc set by 0.15Vdc across A2R172). It turns off each output pulse using the difference between the
voltage at voltage divider A2R161-A2R163 and the 2.5Vdc set by voltage regulator A2U21.
Circuit Included. +5Vdc bias supply circuitry from connector pins A2J5-1,3 through jumper A2W3 on A2 control board.
Setup. The Main Troubleshooting Setup, Page 53. Apply the ac mains voltage to the voltage transformer, and set the
external supply to 0Vdc.
Input:
NODE (+)
A2J7-22
NODE (-)
A2J7-4
MEASUREMENT
≈ 21Vdc
SOURCE
A1CR2,A1CR5
Outputs:
NODE ( + )
NODE (-)
A2U22-7
A2J7-4
A2U22-12,13
"
A2Q9 (emit)
"
A2U21-2
"
A2R161, A2R163
"
To check if load on + 5V is shorted, remove jumper A2W3
58
MEASUREMENT
≈2 to 4Vdc sawtooth, 40KHz
≈ 19V pk, 15µs pulses, 40KHz
≈ 20V pk, 5µs pulses, 40KHz
2.5 Vdc
2.5 Vdc
Figure 3-7. Waveforms
59
+15V On A2 Control Board. Voltage regulator A2U11 regulates the voltage across resistor A2R99 to be 1.25Vdc. That
sets the current through zener diode A2VR3 at 7.5mAdc. The output voltage is 1.25Vdc plus 11.7Vdc across A2VR3 plus
the voltage across A2R100.
Circuit Included. +15Vdc bias supply circuitry from connector pin A2J5-5 through test point A2J7-2 on A2 control board.
Setup. The Main Troubleshooting Setup, Page 53. Apply the ac mains voltage to the isolation transformer, and set the
external supply to 0Vdc.
Input:
NODE (+)
A2C52 (+)
NODE (-)
A2C52 (-)
MEASUREMENT
≈ + 25Vdc
SOURCE
A1U4
Outputs:
NODE ( + )
A2J7-2
A2J7-2
A2J7-2
A2C50( + )
NODE (-)
A2U11-3 (ADJ)
A2VR3 (anode)
A2VR3 (anode)
A2C50( - )
MEASUREMENT
l.25Vdc
12.9Vdc
6.2Vdc
13.8Vdc
To check if load on +15V is shorted, remove jumper A2W1.
-15 V On A2 Control Board. Voltage regulator A2U12 regulates the voltage across resistor A2R103 to be 1.25Vdc.
Circuit Included. -15 Vdc bias supply circuitry from connector pin A2J5-6 through test point A2J7-21 on A2 control
board.
Setup. The Main Troubleshooting Setup, Page 53. Apply the ac mains voltage to the isolation transformer, and set the
external supply to 0Vdc.
Input:
NODE (+)
A2C55 (+)
Outputs:
NODE ( + )
A2J7-21
A2J7-21
A2C54( + )
NODE (-)
A2C55 (-)
MEASUREMENT
≈ - 25Vdc
NODE (-)
A2U12-3 (ADJ)
A2VR4 (cath)
A2C54( - )
SOURCE
A1U4
MEASUREMENT
- l.25Vdc
- 12.9Vdc
13.8Vdc
To check if load on -15V is shorted, remove jumper A2W2.
Refer to Down Programmer, for the + 10.6Vdc bias supply, and refer to OVP Circuit, for the + 2.5V bias supply.
60
Troubleshooting Down Programmer
The down programmer discharges the output when either PWM OFF is generated or CV ERROR is more negative than
about - 3Vdc. Comparator A5U1 triggers down programming when the voltage at A5U1-5 is less than about 4Vdc.
Circuit Included. Down programmer and 10.6V bias supply on A1 main board.
Setup. The Main Troubleshooting Setup, Page 53, except connect the external supply to the unit's + OUT ( + ) and - OUT (
- ) terminals. Apply the ac mains voltage to the isolation transformer. Set the external supply for an output voltage of 10Vdc
and set current limit for 2.5 Amps. Set the power supply under test for a voltage setting of 8.0Vdc and current setting of
2.0Adc using the ''DISPLAY SETTING" switch.
Outputs:
NODE ( + ) *
A5C1 ( + ) C3(6031A)
A5VR1(K)
A5U1-3
A5CR1( K ) CR2(6031A)
A5CR1( K ) CR2(6031A)
A5U1-1
A5U1-1
A5R20 + (6030A/35)
A5R20 + (6030A/35)
across A5R1(6031A)
across A5R1(6031A)
across A5R14(6032A)
across A5R14(6032A)
EXTERNAL SUPPLY
ON/OFF
ON/OFF
ON/OFF
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
MEASUREMENT
10Vdc
6.5Vdc
0.2Vdc
0.6Vdc
0.2Vdc
0.5Vdc
5.0Vdc
< 0.001Vdc
1.5Vdc
< 0.001Vdc
0.10Vdc
< 0.001Vdc
0.17Vdc
* NODE (-) = A2J7-4
Troubleshooting CV Circuit
V-MON, the output of CV Monitor Amp A2U2. is 1/40 (6030A); 1/4 (6031A); 1/12 (6032A); l/l00 (6035A) the voltage
between + S and - S. CV Error Amp A2U3 compares V-MON to CV PROGRAM. Innerloop Amp A2U5A stabilizes the
CV loop with input from A2U5B. The measurements below verify that the operational amplifier circuits provide expected
positive and negative dc voltage excursion when the CV loop is open and the power mesh shut down.
Circuits Included. Constant Voltage (CV) Circuit and buffer amplifier A2U5B.
Setup. The Main Troubleshooting Setup, Page 53. Apply the ac mains voltage to the isolation bias transformer, and
disconnect the external supply. Remove the + S jumper and connect A2J7-2 ( +15V) to + S. Set mode switch settings B4,
B5 and B6 all to 0. Set VP to 0Vdc by connecting to P or set VP to + 5Vdc by connecting to A2J7-24 according to SETUP
below. VP and P are on rear-panel terminal block.
61
Outputs:
NODE ( + )
VM
A2U5-1
A2U3-6
A2U5-1
A2U3-6
A2U5-7
NODE (-)
A2J7-4
"
"
"
"
"
SETUP
VP = 0
VP = 0
VP = 5
VP = 5
short A2J7-24 to A2U5-5
MEASUREMENT
3.75Vdc
-14Vdc
-14Vdc
4.7Vdc
5.1Vdc
+ 7.5Vdc
If the failure symptoms include output voltage oscillation, check if the CV Error Amp circuit is at fault by shorting A2U3-6
to A2U3-2. If oscillations stop, the CV Error Amp circuit is probably at fault.
Troubleshooting CC Circuit
I-MON, the output of CC Monitor Amp A2U1, in volts is 5/17 (6030A); 1/24 (6031A); 1/10 (6032A); equals (6035A) the
output current in amperes. CC Error Amp A2U4C compares l-MON to CC PROGRAM. Differentiator circuit A2U4A
differentiates the inboard voltage sense and stabilizes the CC loop. Its output is summed with CC PROGRAM at CC Error
Amp A2U4C.
The measurements below verify that the operational amplifier circuits provide expected positive and negative dc voltage
gain when the CC loop is open and the power mesh shut down.
Circuits Included. Constant Current (CC) Circuit on A2 control board.
Setup. The Main Troubleshooting Setup, Page 53, except connect the external supply with polarity reversed to the unit's +
OUT ( - ) and - OUT ( + ) terminals. Apply the ac mains voltage to the isolation transformer. Set the external supply to
3.0Adc constant current with a voltage limit in the range 5 to 20Vdc. Set IP to 0Vdc by connecting to P or set IP to +5Vdc
by connecting to A2J7-24 according to SETUP below. Set mode switches B1, B2, and B3 AU to 0.
Outputs:
NODE ( + )
IM
NODE (-)
A2J7-4
SETUP
A2U4-8
A2U4-8
"
"
IP = 0
IP = 5
MEASUREMENT
0.88Vdc (6030A)
0.125Vdc (6031A)
0.30Vdc (6032A)
1.00Vdc (6035A)
-14Vdc
+14Vdc
If the failure symptoms include output current oscillation, check if the differentiator circuit is at fault by removing resistor
A2R35. If oscillations stop, the differentiator is probably at fault.
Troubleshooting OVP Circuit
Flip-flop A2U8A-A2U8D is set by comparator A2U8C and reset by OV CLEAR. TTL low at A2U18-12 inhibits the PWM.
OVP Program Voltage on A2J7-7 is equal to Eout/250 (6035A), Eout/100 (6030A), Eout/30 (6032A), Eout/10 (6031A).
Circuit included. OVP Circuit and 2.5V bias supply on A2 control board.
62
Setup. The Main Troubleshooting Setup, Page 53, except connect the external supply to the unit's + OUT ( + ) and - OUT
(-) terminals. Apply the ac mains voltage to the isolation transformer. Adjust the unit's OVP limit to 10Vdc. Set the external
supply (EXTERNAL) as instructed below.
Outputs:
NODE ( - ) = A2J7-4
SET VOLTAGE
EXTERNAL (Vdc)
-
NODE ( + )
A2U7-2
A2J7-7
A2J7-5
A2J7-13
A2J7-13
A2J7-13
A2J7-13
Note:
5
15
5
5
SETUP
cycle power
MEASUREMENT
2.5Vdc
0.1V (6030A)
1.0V (6031A)
0.33V (6032A)
0.04V (6035A)
4.5Vdc
Hi
Lo
Lo
Hi
Connecting a test probe to either input of either comparator in the OV Flip Flop (pins A2U8-1, 6, 7,10,11
or 13 ) may cause the flip flop to change states and cause the probed input to be low.
Troubleshooting PWM & Clock
The inputs to gates A2U18A and A2U18B are the keys to PWM troubleshooting. The 20KHz Clock starts each PWM
output pulse, and the pulse stops when any of the inputs to A2U18A or A2U18B goes low. The PWM is inhibited and
prevented from initiating output pulses as long as any of the seven inputs is low.
Circuit Included. Pulse Width Modulator (PWM), Off-Pulse Oneshot, On-Pulse Oneshot, 20KHz Clock.
Setup. The Main Troubleshooting Setup, Page 53. Apply the ac mains voltage to the isolation transformer. Adjust the unit's
current setting above 1.0 Adc. Set the external supply (EXTERNAL) and adjust the unit's voltage setting (INTERNAL) as
instructed below.
Inputs:
NODE ( - ) = A2J7-4
NODE ( + )
A2J7-24
A2U18-9
A2U18-10
A2U18-12
A2U18-13
A2U18-5
A2U18-2
A2U18-1
SETUP
set OUTPUT
ADJUST for 1Vdc
MEASUREMENT
5.0Vdc
Hi
Hi
Hi
Hi
Hi
Hi
Hi
SOURCE
A2Q9, A2W3
Remote Inhibit
A2U15-10
A2U15-13
A5TS1, A4TS1
A2U18-8
A2U8-2
A2U10-7
63
Outputs:
NODE ( + )
A2U20-1
A2U20-5
A2U20-6
A2U19-5
A2U19-6
A2U16-5
A2U16-5
A2U16-4
A2U16-4
A2U15-1
A2U15-1
+OUT
+OUT
64
SET VOLTAGE (Vdc)
EXTERNAL
INTERNAL
0
0
0
0
0
0
0
2
0
2
40
2
40
0
40
20
40
0
40
20
40
0
40
20
40
2
MEASUREMENT
TTL sq wave, 320KHz
TTL sq wave, 40KHz
TTL sq wave, 20KHz
20KHz
20KHz
10µs pulse, 20KHz
Lo
48µs pulse, 20KHz
hi
1.7µs pulse, 20KHz
Lo
┐
≈ 40Vdc (6030A)
│
≈ 8Vdc (6031A)
├
≈ 14Vdc (6032A)
│
≈ 80Vdc (6035A)
┘
2.0Vdc (CV)
OVERRANGE
4
Principles of Operation
Introduction
This chapter contains block diagrams, simplified schematics, and related descriptions of the power supply. The instrument
can be thought of as comprising two major sections: the GPIB, microcomputer, and interface circuitry; and the power mesh
and control circuits. Block diagrams represent the GPIB board, the front panel board, and the power mesh and control
board. The descriptions associated with these block diagrams explain the function of each block without describing how
individual components within the circuit accomplish that function. Detailed descriptions are provided only for those
individual circuits whose operation may not be obvious to the user.
The circuit names and layouts of the block diagrams are the same as used on the complete schematics; however, some items,
such as bias supplies, are left off the block diagrams for clarity. In general, circuits are described as they appear on the
diagrams from left to right. Signal names that appear on the drawings are printed in capitals in the descriptions, as are
front-panel labels for indicators and controls. Signal names that describe an operating mode or condition are active when
that condition exists. For example, OT is high and OT is low if an overtemperature condition exists. Signal flow is from left
to right and top to bottom, unless arrows indicate otherwise.`
The following paragraphs describe the GPIB and the front-panel board. These circuits provide the interface between the
power mesh circuits and the controller and/or operator. The GPIB and front-panel boards are referenced to earth common.
Isolation is achieved by optical isolators on the GPIB board. Data is sent between boards serially.
GPIB Board
Circuits on the GPIB board, see Figure 4-1, provide the interface between the power supply and the user, generate the
fault/inhibit and relay controls signals (DFI/RI), and supply the analog control and reference signals for the power mesh and
readback circuit. Two microprocessors (primary and secondary) control all data communication between the power supply
and the user. Additional circuits on the GPIB board include the serial interface ports, address switches, an EEPROM, and
status registers.
Primary Microprocessor
The primary microprocessor controls the GPIB/serial link interface, the front panel data communication, and the DFI/RI
interface. It communicates with the secondary microprocessor through two serial link data lines that are optically coupled to
provide the proper isolation of the user interface from the power mesh. The GPIB board also has a ROM, which contains
the operating firmware, and a RAM, which stores variables such as programmed voltage and current and readback values.
Address Switches
The primary microprocessor determines the GPIB address by reading the address switch settings. Two of the address
switches determine the power-on SRQ state and the DFI/RI port setting.
65
Figure 4-1. GPIB Block Diagram
66
EEPROM
The primary microprocessor determines the power supply ID, start-up parameters, calibration constants and scale factors by
reading the factory-initialized EEPROM.
Isolation
Two optical isolators transmit serial data between the primary and secondary microprocessors while maintaining electrical
isolation between the controller/user-interface and the power mesh.
Secondary Microprocessor
The secondary microprocessor translates the serial data from the primary microprocessor into a parallel data bus and other
control signals. Values are loaded into the voltage, current, and readback DAC via the data bus. The secondary
microprocessor also controls the analog multiplexer, which is used when reading back the actual output.
Digital-to-Analog Converters
Output voltage and current are controlled by two 12-bit DACs whose digital inputs are directly connected to the secondary
microprocessor. The microprocessor programs the DACs according to data received over the GPIB or from the front panel
rotary pulse generator. The DAC circuits also include buffers and compensation amplifiers.
The 12-bit readback DAC is connected to the input of a comparator where it's output is compared to the unknown voltage
output of the analog multiplexer. The secondary microprocessor programs the output of the readback DAC starting with the
MSB and continuing down to the LSB. Each bit is programmed either on or off until the output of the DAC is closest to the
unknown voltage output of the multiplexer. At this point, the microprocessor returns the programmed value of the readback
DAC.
Analog Multiplexer
The analog multiplexer selects one of five input voltages to be compared to the readback DAC. This comparison allows the
microprocessor to determine the value of the input voltage. The five inputs of the multiplexer are: CV_PROG and
CC_PROG, which are only used during selftest, at power-on, or in response to the TEST? query when the supply is
disabled; OV_MON, which represents the overvoltage trip setting; and I_MON and V_MON, which represent the measured
values of output current and voltage.
Status Inputs
The status inputs from the main board provide the following status information to the secondary microprocessor. They are:
CC, which is set when the supply is operating in constant current mode; CV, which is set when the supply is in constant
voltage mode; AC_FAULT, which signals that ac power has dropped below the minimum operating voltage of the supply;
OT, which indicates an overtemperature condition has occurred on the supply; and OV, which indicates an overvoltage has
occurred on the supply.
67
Front Panel Board
The front-panel board, see Figure 4-2, contains the VOLTS and AMPS display circuits, the rotary pulse generator (RPG)
and RPG decoders, five pushbutton switches, mode indicators, and the OVP ADJUST potentiometer. Data from the
microprocessor is shifted to the display circuits via DATA DOWN , and data from the front-panel controls circuits is
shifted to the microprocessor via DATA UP. Circuits on the front-panel board operate from bias voltages supplied from the
GPIB board, and are referenced to the same common as the GPIB board (earth ground). The OVP ADJUST potentiometer
is part of the power mesh control circuitry (referenced to power supply negative output), and is not connected to any circuits
on the front-panel board.
Address Latches and Decoders
DATA DOWN bits received while D / A is low are latched and decoded in this circuit, which then steers clock pulses to
the addressed circuit when D / A goes high.
Volts and Amps Output Ports and Displays
These circuits display values sent by the microprocessor via DATA DOWN. Normally, these are the actual output voltage
and current readings. Pressing the DISPLAY SETTINGS switch causes the microprocessor to send the voltage and current
values that have been sent by the controller (remote) or RPG (local). If the unit is in CV mode, the voltage display should
show the same reading for actual and set values; the current display will switch from the actual value to the current limit. In
CC mode, the current readings will be the same and the voltage display will switch from actual value to the voltage limit.
Pressing the DISPLAY OVP switch causes the voltage display to show the OVP trip voltage that has been set.
The microprocessor also uses the readout to display the GPIB address switch settings, self test error messages, and readback
overrange conditions.
RPG and Latches
When rotated, the RPG products two pulse trains that are 90 degrees phase shifted from each other, with the phase
relationship determined by the direction of rotation. This circuit contains two flip-flops that monitor the RPG outputs. The
output of one flip-flop goes low to indicate that the RPG has been rotated, and the output of the other goes low to indicate
CW rotation or high to indicate CCW rotation. This data is loaded into an input port when D / A is low, and the flip-flops
are set back to their quiescent state by clock pulses from the address decoder when the input port is addressed.
Because the microprocessor reads the input approximately every millisecond, it can determine if the RPG is being turned
rapidly (for a large change) or slowly (for fine adjustment), and the microprocessor varies the rate it changes the DAC
inputs accordingly.
Front-Panel Switches and Input Port
Five front-panel pushbutton switches plus the two RPG flip-flop outputs are connected to this input port. Data is loaded
when D / A is low, and is shifted out by clock pulses from the address decoders. The microprocessor reads data in via
DATA UP approximately every millisecond, and checks the switches every 10 ms, thereby ensuring that even rapid switch
operations will be captured.
68
Figure 4-2. Front Panel Block Diagram
69
Mode Indicators
The front-panel mode indicators are controlled by the microprocessor via DATA DOWN and the mode indicator output
ports and latches. DATA DOWN signals are shifted in by clock pulses from the address decoders.
OVP Adjust Control
The OVP ADJUST potentiometer sets the voltage level at which the overvoltage protection (OVP) circuit trips.
Power Clear
The power clear signal ( PCLR ) from the GPIB board goes low when the unit is turned on, and remains low until the bias
power supplies have stabilized. This low level resets the display-circuit latches on the front panel board, causing all
indicators and display segments to turn on and remain on until the microprocessor updates the display (approximately one
second).
Power Mesh and Control Board
The basic operating concepts of the power mesh and control circuits are described in the following paragraphs. The
beginning paragraphs describe the basic difference between an autoranging power supply and a conventional CV/CC power
supply in terms of the available output, and provide an overview of the basic theory of operation. Later paragraphs describe
the functions of the individual circuits on the power mesh and control board.
Overview
The basic difference between an autoranging power supply and conventional types of Constant Voltage/Constant Current
(CV/CC) power supplies can be seen by comparing the maximum-output-power characteristics of each. A conventional
CV/CC power supply can provide maximum output power at only one combination of output voltage and current, as shown
in Figure 4-3a. The range of a power supply can be extended by designing an instrument with two or more switch-selectable
voltage/current ranges within the maximum power-output capability, as shown in Figure 4-3b. An autoranging power supply
provides maximum output power over a wide and continuous range of voltage and current combinations, as shown in Figure
4-3c, without the operator having to select the proper output range.
The unit is a flyback-type switching power supply, so-called from the flyback technique of generating high voltage in
television receivers. Energy is stored in the magnetic field within a transformer while current flows in the primary, and is
transferred to the secondary circuit when current flow in the primary is turned off. Current flow in the primary is controlled
by FET switches which are turned on and off at a 20KHz rate by a pulse width modulator. Regulation is accomplished by
controlling the on time of the FET switches. On pulses are initiated by a clock circuit. Off pulses are initiated when current
flow in the primary has stored enough energy for the output circuit, which is determined as follows.
Sense voltages representing the actual output voltage and current are compared to reference voltages set either by
front-panel controls or remote programming signals. These comparisons produce a control voltage, which represents the
amount of power required by the output circuit. Current flow in the primary circuit produces a ramp voltage that represents
the amount of energy being stored for transfer to the output circuit. An off pulse is generated when the ramp voltage exceeds
the control voltage. It can be seen that the power available in the output circuit corresponds to the duty cycle of the FET
switches.
Figure 4-4 shows the relationship of various signals associated with the FET on/off cycle.
70
Figure 4-3. Output Characteristics; Typical, Dual Range, and Autoranging Supplies
Figure 4-4. FET Control Signals Timing Diagram
Power Mesh
Figure 4-5 is a block diagram of the power mesh. These circuits convert the ac input power to approximately 320Vdc, and
convert this dc voltage to the proper dc output voltage.
71
Input Circuits. Primary power is connected through the AC Input Filter to the LINE switch and to the normally open
contacts of the Inrush-Limit relay. When LINE switch is closed, current flows through the inrush current limiting resistor
and the normally closed relay contacts to the Bridge Rectifier/Voltage Doubler. This circuit is jumper connected as a
voltage doubler for 100 or 115Vac operation and as a full-wave bridge charges to about 320Vdc for any input voltage.
Current also flows through the Voltage Select Switch to the Bias Power Supplies, which provide the operating voltages for
the power supply. The Voltage Select Switch connects the primary windings of the bias transformer for operation at 100,
120, 220, or 240Vac. The Voltage Select Switch also supplies 120 Vac to the fan and Relay Circuits.
The Inrush Limit relay is energized by RELAY ENABLE , which is generated on the control board after the unit has
checked that various operating voltages are within acceptable limits. After a delay of approximately 2-1/2 seconds, which
allows the Input Filter capacitors to charge, the relay is energized, bypassing the Inrush Limit resistor. A switch on the main
board switches in more Inrush Limit resistance for 220 or 240Vac operation.
DC To DC Conversion. Current flow from the input rails through the power transformer is controlled by FET switches. On
and off pulses for the FETs are generated on the control board, as will be described shortly. On pulses are applied through
the On Driver and pulse transformer T1 to the gates of both pairs of FETs. Although the on pulse is only about 1.7µs
duration, the FETs' input capacitance holds the FETs on after the on pulse has disappeared.
When the FETs are turned on, current flows through the primaries of Power Transformer T2 and Primary-Current Monitor
Transformer T1. The Output Diodes are reverse biased and block current flow in the T2 secondary. Consequently, energy is
stored in the field that builds around the T2 transformer windings. The longer that voltage is applied to the primary, the
more energy is stored. Current flow in the secondary of T1 is connected to the control board, where it generates a ramp
voltage. The amplitude of this linearly increasing voltage corresponds to the amount of current flow through the T2 primary;
therefore, it represents the amount of energy being stored in the field around T2. It is this ramp voltage that is compared to a
control voltage to determine when the FETs should be turned off.
Off pulses turn on Q5 and Q6, which discharge the FET gates, thereby turning the FETs off. When the FETs are turned off,
the collapsing magnetic field reverses the polarity across the T2 primary and secondary, and current flows from T2
secondary through output diodes to charge the output filter capacitors. The level to which the output capacitors are charged
corresponds to the length of time that the FETs are on and current flows in T2 primary.
Leakage inductance of T2 attempts to maintain current flow in the primary circuit when the FETs turn off. Flyback diodes in
the FET board protect the FETs by conducting this current around the FETs and back to the input filter.
Down Programmer. This circuit allows the output voltage to be lowered rapidly when required. In order to lower the
output voltage it is necessary to discharge the output filter capacitors (typically, through the load). In situations that require
the output voltage to drop more rapidly than can be accomplished through the load, the Down Programmer discharges the
capacitors and pulls the output line low. DOWN PROGRAM ENABLE is generated on the control board. Six conditions
can conditions can trigger down programming: programming of a lower output voltage, overvoltage, overtemperature,
remote disable, remote inhibit, or primary power failure.
The + 10.6Vdc bias supply for the Down Programmer stores enough energy in its input capacitor to operate the Down
Programmer after loss of primary power. This ensures that the Down Programmer will be able to discharge the output
circuit completely when primary power is turned off.
The Agilent 6030A/35A units contain an active bleed circuit, connected across the output, which allows regulation at low
output current and/or low output voltage levels. This circuit also minimizes dielectric absorption effects, which show up as
noise on the output of the supply.
Current Monitor Resistor. A highly stable resistance element in the -output line develops the CURRENT SENSE voltage,
which is proportional to the power supply output current. This signal is supplied to the CC Circuit on the control board.
72
Control Board
Figure 4-6 is a block diagram of the control board. These circuits monitor the power supply operation and provide the
signals that control the power mesh.
+ 5V Bias Supply. This circuit operates from the + 5V Unregulated voltage from the main board, and generates + 5V and
+ 2.5V used by circuits on the control board. Regulated + 5V is also supplied back to the main board for use by the relay
circuits, FET Drivers, and Down Programmer. The + 5V Bias Supply is regulated by a pulse width modulator chip that is
synchronized by the 40KHz clock signal to the main Pulse Width Modulator; this eliminates the possibility of frequency
modulated signals on common lines.
Bias Voltage Detector and Relay Driver. The Bias Voltage Detector monitors + 5V Unregulated to determine when bias
voltages are sufficient to ensure proper operation. After turn-on, as the output of the + 5V bias supply rises from 0Vdc
through approximately 1Vdc, three transistor switches in the Bias Voltage Detector turn on. They inhibit the relay driver
and the on-pulse driver, and generate the power-clear signal. The switches remain on until the + 5V Unregulated input
exceeds approximately 13 volts, which is sufficient to ensure both a stable + 5V output and adequate FET drive voltage.
PCLR holds various circuits reset until after the bias voltages stabilize and control circuits are certain to be working.
RELAY ENABLE , which is delayed for approximately 2 ½ seconds by the Time Delay Circuit, drives relay circuits on the
main board that short out inrush current limiting resistors after input filter capacitors are charged up. RELAY ENABLE
cannot occur until bias voltages have stabilized and time delay has expired. ON - PULSE INHIBIT shorts ON pulses to
ground whenever bias voltage is insufficient to ensure proper operation.
Note that Bias Voltage Detector inhibits power supply operation in two circumstances: while bias voltages are stabilizing
after turn-on, and when ac input drops below an adequate level (brownout).
+ 15V Bias Supply. This circuit produces the + 15V and +5.9V bias voltages. It also produces the reference voltage used
by the CC and CV Current Sources.
Time-Delay Circuit. This circuit generates the signal that delays RELAY ENABLE for approximately 2 ½ seconds after
cessation of an ac fault (Dropout or High AC). The AC FAULT signal is extended for the duration of the time delay and
supplied to: the 1.25KHz counter in the 20KHz Clock Circuit to reset the counter, so that the time delay output of the Time
Delay Circuit will remain set; the Pulse Width Modulator (PWM) to inhibit the PWM in case of an ac fault.
AC Dropout Detector. The AC Dropout Detector operates to shut down the power mesh when primary power is turned off
or lost. The circuit monitors the 120Hz signal (full-wave rectified 60 Hz ac) from the bias transformer on the main board.
Dropout is detected by a ramp circuit that is reset by the 120 Hz pulses. If the ramp is not reset within approximately 20
milliseconds of the previous reset, the circuit generates AC FAULT, which is supplied to the Time Delay Circuit to disable
RELAY ENABLE and the PWM.
High AC Detector. The High AC Detector protects the power supply from damage from ac power line surges. The circuit
contains a comparator that monitors the voltage level of the 120Hz signal. If this voltage exceeds a safe operating level, the
circuit generates the HIGH AC signal, which is ORED with AC DROPOUT . Either can cause generation of the AC
FAULT signal.
Turn-On Overshoot Control. The Turn-On Overshoot Control Circuit prevents output overshoot when the Pulse Width
Modulator is turned back on after having been turned off. The circuit monitors the PWM OFF signal from the Pulse Width
Modulator. If the PWM is turned off because of INHIBIT (from GPIB), AC FAULT , OT (overtemperature), or OV
(overvoltage), the power supply output will be down programmed to zero, and both the CC and CV Circuit outputs will
increase to maximum in an attempt to restore the output level. This circuit holds the CONTROL PORT at a low level to
prevent output overshoot when PWM OFF is removed.
73
Constant Current (CC) Circuit. The Constant Current Circuit compares the CURRENT SENSE voltage level to CC
PROGRAMMING VOLTAGE to produce CC CONTROL SIGNAL. CURRENT SENSE is developed across the
current-monitor resistor on the main board, and is proportional to the power supply output current. CC PROGRAMMING
VOLTAGE comes from one of a number of sources as selected by the rear-panel mode switches, and represents the desired
output current or current limit.
CC CONTROL SIGNAL varies from approximately -1 to +0.5 volts when the power supply is in constant current mode,
and is most positive when the CC Circuit is calling for maximum power supply output. CC CONTROL SIGNAL is
connected through an output diode, CR11, shown at the wired-OR gate that is the CONTROL PORT.
The amplified current-sense signal is brought out of the CC Circuit as I-MON (current monitor). I-MON is connected to the
rear-panel IM terminal, and varies from 0 to + 5 volts as the output current varies from zero to full scale.
A differentiator circuit in the CC Circuit block provides increased stability for highly reactive loads.
Constant Voltage (CV) Circuit. Operation of the CV Circuit is similar to the CC Circuit. The CV Circuit compares the
output SENSE voltage to the CV PROGRAMMING VOLTAGE to produce the CV CONTROL SIGNAL. + OUT and OUT are also supplied to the circuit as protection in case the sense leads are inadvertently disconnected. CV CONTROL
SIGNAL also varies between approximately -1 to + 0.5 volts, and is connected through diode CR24 to the CONTROL
PORT.
The buffered voltage-sense signal is brought out of the CV Circuit as V_MON (voltage monitor). V_MON is connected to
the rear-panel VM terminal, and varies from 0 to + 5 volts as the output voltage varies from zero to full scale. Both V-MON
and I-MON are referenced to monitor common ( M).
The CV Circuit also produces the DOWN PROGRAM ENABLE signal when the CV PROGRAMMING VOLTAGE is
changed quickly from a relatively high level to a relatively low level. This allows the power supply output voltage to be
lowered more rapidly than if the output filter capacitors had to be discharged solely through the load.
CC And CV Current Sources. This circuit generates constant currents that are connected to front-panel VOLTAGE and
CURRENT potentiometers of non-- GPIB units to develop the CC and CV programming voltages.
Mode Switches. The rear-panel mode switches select the source of the CC and CV PROGRAMMING VOLTAGES. For
GPIB units, the programming voltages are supplied via the GPIB board, and are connected through mode switches B1 and
B4 to the CC and CV Circuits. For non-- GPIB units, mode switches B2, B3, and B5, B6 are closed. The CC and CV
Current Source outputs are connected through B2 and B5 to the front-panel CURRENT and VOLTAGE potentiometers,
and the voltages developed across the potentiometers are connected through B3 and B6 to the CC and CV Circuits.
Remote analog programming voltages can be supplied to the CC and CV Circuits from the rear-panel IP and VP terminals.
IP and VP are referenced to program common ( P).
Primary Current Ramp. The output from the primary current-monitor transformer on the main board is developed across
R116 and R117 to produce a ramp voltage that represents the amount of energy being stored in the power transformer for
transfer to the power supply output circuits. This ramp voltage is connected to the Power Limit Comparator and to the
Control Voltage Comparator.
Power Limit Comparator. The power supply maximum output power curve (shown in Specifications Table in the
Operating Manual) is defined by this circuit. The PRIMARY CURRENT RAMP voltage, which represents the amount of
power being supplied to the power supply output, is compared to a voltage which represents the maximum amount of power
that the power supply can supply safely. If the ramp voltage exceeds the limit voltage, the POWER LIMIT signal is
produced to turn off the PWM.
The Power Limit Comparator Circuit includes a dynamic primary-current-limit circuit, which decreases the primary current
limit to maintain the output power curve at specified limits.
74
Control Voltage Comparator. This circuit compares the voltage at the CONTROL PORT (represents power required at
output) with PRIMARY CURRENT RAMP voltage (represents energy being stored for transfer to output). When RAMP
voltage exceeds CONTROL PORT voltage, the Control Voltage Comparator generates the CONTROL LIMIT signal to
turn the PWM off. The CONTROL PORT is biased to approximately + 1.3 volts. Whichever control signal, CC or CV, is
more negative (calling for less output power) forward biases its output diode and determines the voltage at the CONTROL
PORT.
As can be seen from the waveforms in Figure 4-4, there is a delay between the time when PRIMARY CURRENT RAMP
voltage exceeds the CONTROL PORT voltage and the time when the FETs turn off. This delay consists of the comparator
switching time, gate delays, transformer delay, and FET turn-off time, and it results in a certain amount of power being
transferred to the output after the desired off time. If the CONTROL PORT voltage is at a very low level (unit supplying
little or no output power), this power may exceed the amount required by the load. To eliminate the delay, the Control
Voltage Comparator includes an initial ramp circuit that generates a small ramp voltage before the FETs are turned on. The
added ramp voltage starts with the 20KHz clock pulse, and causes the combined-ramp voltage to exceed the CONTROL
PORT voltage earlier, thereby effectively eliminating the FET turn-off delay.
Status Drivers. Inputs from the CC and CV Circuits indicate which circuit, if either, is regulating the power supply output.
If neither circuit is regulating the output (load calling for more power than the power supply can deliver), logic circuits
within Status Driver block determine that output is unregulated.
In GPIB units, CC and CV signals go to the microcomputer, which will take appropriate action, including lighting
front-panel indicators. In non-- GPIB units, Status Driver outputs go to front-panel indicators.
20KHz Clock. This circuit contains a 320KHz crystal oscillator and dividers that produce 40KHz, 20KHz, and 1.25KHz
signals. Both the 320KHz and 20KHz signals are supplied to the PWM, with the 20KHz signal controlling the repetition
rate of the PWM.
The 40 KHz signal is supplied to the +5V Bias Supply Circuit to synchronize the PWM in that circuit to the main power
supply PWM. The 1.25KHz output is supplied to the Time Delay Circuit for generating the time delay used to control the
power supply turn-on sequence.
The 1.25KHz signal is subsequently disabled by the AC FAULT output from the Time Delay Circuit at the end of the time
delay.
Pulse Width Modulator (PWM). The PWM generates the ON and OFF pulses that control the power FETs in the power
mesh. ON pulses are generated at a 20KHz rate, and, as can be seen in Figure 4-4, are initiated by the first 320KHz dock
pulse after the start of the 20KHz clock pulse. When the FET switches turn on, current flows through the Primary Current
Monitor transformer on the main board, and the Primary CURRENT RAMP voltage starts to rise. OFF pulses are normally
initiated when CONTROL LIMIT becomes active (low), indicating that the ramp voltage has exceeded the CONTROL
PORT voltage. However, an off pulse can be initiated by any one of a number of other signals.
An overtemperature ( OT ), overvoltage ( OV ), remote inhibit, AC FAULT condition or an INHIBIT signal from GPIB
will initiate an OFF pulse, and will also trigger the Down Programmer to reduce output voltage to zero. These conditions
will also cause PWM OFF to be sent to the TurnOn Overshoot Control Circuit.
OFF pulses can also be initiated by POWER LIMIT and by the trailing edge of the 20KHz clock signal. The 20KHz clock
signal ensures that even if nothing else, such as CONTROL LIMIT or POWER LIMIT , initiates an OFF pulse, the FET
duty cycle will be limited to less than 50%.
Overvoltage Protection (OVP). The OVP circuit monitors the power supply output voltage and compares it to a preset
limit determined by a front-panel OVP ADJUST potentiometer. If the output voltage exceeds the limit, the OVP Circuit
initiates a PWM OFF pulse, which also triggers the Down Programmer. The OVP Circuit lathes itself until it receives OV
CLEAR or ac power is turned off.
75
Figure 4-5. Power Mesh Block Diagram
76
Figure 4-6. Control Board Block Diagram
77
5
Replaceable Parts
Introduction
This chapter contains information for ordering replacement parts. Table 5-1 lists parts in alpha-numeric order by reference
designators and provides the following information:
a.
b.
c.
d.
Reference Designators. Refer to Table 5-1.
Agilent Technologies model in which the particular part is used.
Agilent Technologies Part Number.
Description. Refer to Table 5-2 for abbreviations.
Parts not identified by reference designator are listed at the end of Table 5-4 under Mechanical and/or Miscellaneous.
Table 5-1. Reference Designators
A
B
C
CR
DS
F
FL
G
J
K
L
Q
RT
S
T
TB
TS
U
VR
W
X
Y
Assembly
Blower
Capacitor
Diode
Signaling Device (light)
Fuse
Filter
Pulse Generator
Jack
Relay
Inductor
Transistor
Thermistor Disc
Switch
Transformer
Terminal Block
Thermal Switch
Integrated Circuit
Voltage Regulator (Zener diode)
Wire Jumper)
Socket*
Oscillator
* Reference designator following "X" (e.g. XA2) indicates assembly or device mounted in socket.
79
Ordering Information
To order a replacement part, address order or inquiry to your local Agilent Technologies sales office. Specify the following
information for each part: Model, complete serial number, and any Option or special modification (J) numbers of the
instrument; Agilent Technologies part number; circuit reference designator; and description. To order a part not listed in
Table 5-4, give a complete description of the part, its function, and its location.
Table 5-2. Description Abbreviations
ADDR
ASSY
AWG
BUFF
CER
COMP
CONV
DECODER/DEMULTI
ELECT
EPROM
FET
FF
FXD
IC
INP
LED
MET
MOS
OP AMP
OPTO
OVP
PCB
PORC
POS
PRIOR
ROM
RAM
RECT
REGIS
RES
TBAX
TRlG
UNI
VAR
VLTG REG
WW
80
Addressable
Assembly
American Wire Gauge
Buffer
Ceramic
Carbon Film Composition
Converter
Decoder/Demultiplexer
Electrolytic
Erasable Programmable Read-Only Memory
Field Effect Transistor
Flip-Flop
Fixed
Integrated Circuit
Input
Light Emitting Diode
Metalized
Metal-Oxide Silicon
Operational Amplifier
Optical
Over Voltage Protection
Printed Circuit Board
Porcelain
Positive
Priority
Read-Only Memory
Random Access Memory
Rectifier
Register
Resistor
Tube Axial
Triggered
Universal
Variable
Voltage Regulator
Wire Wound
Table 5-3. Replaceable Parts List
Ref. Desig
Al
Agilent Model
Agilent Part Number
6030A
06030-61032
6031A
06031-61032
6032A
06032-61032
6035A
06030-61033
Cl,2,4,5,6,8
all
0180-4528
C9
all
0160-5932
C10
6030A,35A
0180-3699
6031A,32A
0180-0426
C11,12
6030A, 31A
0160-5895
6032A, 35A
0160-5933
C13,14
6030A
0180-3702
6031A
0180-3425
6032A*
0180-3492
6035A
0180-4240
C15,16
6030A,32A,35A
0180-3587
6031A
0180-3425
C17,18
6030A,32A,35A
0180-0291
6031A
0180-3587
C19
6030A*
0160-0269
6031A
0180-0291
6032A*
0160-5286
6035A*
0180-0904
C20
6030A,35A*
0160-6392
6031A
0180-0291
6032A*
0160-7732
C21
6030A,35A*
0160-6392
C22
6030A,35A*
0160-6392
6031A*
0160-5377
6032A*
0160-7732
C23
6030A,35A*
0160-6392
6031A*
0160-7732
C24
6032A*
0160-4281
C25
6030A*
0160-0269
6031A*
0160-5377
6032A*
0160-5286
6035A*
0180-0904
C26
6031A*
0160-5377
6032A*
0160-4281
C27
All
0160-6805
C27
6031A*
0160-4281
C28
6031A*
0160-7732
C29
6030A,32A,35A
0160-4323
6031A*
0160-4281
C30
6030A,32A,35A
0160-7606
C32
6031A
0160-4323
C33
6031A
0160-7606
C34
All
0160-6805
* Part of output filter, mounted on output bus bars.
Description
Main Board Assembly
"
"
"
cap 1800µF 200V
cap 0.47µF 250V
cap 470µF 20% 35V
cap 22µF 250V
cap 0.047µF
cap 0.022µF 10%
cap 1600µF 125V
cap 5500µF 40V
cap 2600µF 75V
cap 900µF 350V
cap 1000µF 50 V
cap 5500µF 40V
cap lµF 35V
cap 1000µF 50V
cap 0.047µF 20%
cap 1µF 35V
cap 0.47µF 20%
cap 0.05µF 1KV
cap 0.047µF 20%
cap 1µF 35V
cap 0.47µF
cap 0.047µF
cap 0.047µF 20%
cap 2.2µF 10% 63V
cap 0.47µF
cap 0.047µF
cap 0.47µF
cap 2200pF 20%
cap 0.047µF 20%
cap 2.2µF 10% 63V
cap 0.47µF 20%
cap 0.05µF 1KV
cap 2.2µF 10% 63V
cap 2200pF 20%
cap 0.01µF 400V
cap 2200pF 20%
cap 0.47µF
cap 0.047µF 20%, 250V
cap 2200pF 20%
cap 1µF 20%
cap 0.047µF 20%, 250V
cap lµF 20%
cap 0.01µF 400V
81
Table 5-3. Replaceable Parts List (continued)
Ref. Desig
CR1
CR2
CR3,4
CR5-13
DS1
F1
F2
J2
J5
J6
J7,8
J9,10
L,N,P
J11-14
K1, K2
L1
L2
Agilent Model
Agilent Part Number
all
1901-0731
all
1901-0731
all
1901-0050
all
1901-0731
all
1990-0517
all
2110-0001
all
2110-0671
all
1251-5384
all
5060-2877
all
5060-2878
all
1251-0600
all
1251-5613
all
1251-5613
all
1251-0600
all
0490-1834
all
9170-0707
6030A,32A,35A
9170-1267
6031A
06011-80092
L3
6030A
9140-1064
6031A
06011-80092
6032A
06012-80095
6035A
5080-2131
L4
6031A
9170-1267
Q1
6030A,31A,32A
1855-0456
6035A
1855-0456
Q2
all
1855-0665
R1-4
all
0811-1866
R5
all
0757-0418
R7
all
0698-5525
R8
all
0757-0765
R9
all
0811-3700
R10
all
0811-3699
R11
6030A,35A
5080-2079
6032A
06032-80001
R12
6030A,31A,32A
0699-0188
6035A
0698-3492
R13
6030A,32A
0699-0188
6031A
06011-80001
6035A
0698-3492
R14,15
6031A
7175-0057
6032A
0812-0100
R16,17
all
0683-1065
R18
all
0757-0921
R19
all
0757-0403
R20*
6031A
0699-0208
R21-22*
6032A
0699-0208
R23*
6031A
0699-0208
R24
all
0686-2015
R25
6031A,32A
0811-1869
* Part of output filter, mounted on output bus bars.
82
Description
power rectifier 400V
power rectifier 400V lA
diode, switching 80V 200mA
power rectifier 400V
LED, visible
fuse lAM, 250V
fuse 250mAM, 125V
connector, 3-pin
ribbon cable (W8)
ribbon cable (W7)
connector, single contact
connector, single contact
connector, single contact
connector, single contact
relay 1C 15Vdc-coil 30A 30Vdc
ferrite core (jumper 06012-80003)
magnetic core (jumper 5080-2040)
output choke
output choke
output choke
output choke (core 9170-0721)
output choke 18µH 5A
magnetic core (jumper 5080-2040)
MOSFET N-chan
MOSFET N-chan
MOSFET N-chan
res 10K 1% 5W
res 619 1% 1/8W
res 6.8 5% 1/2W
res 36.5K 1% 1/8W
res 20 10% 20W
res 6 10% 20W
current sensing resistor
current sensing resistor
res 2.2 5% 1/4W
res 26.1 ohms
res 2.2 5% 1/4W
current sensing resistor
res 26.1 ohms
solid tinned copper wire
res 2K 5% 5W
res 10M 5% 1/4W
res 750 1% 1/8W
res 121 1% 1/8W
res 1 5% 1/4W
res 1 5% 1/4W
res 1 5% 1/4W
res 200 5% 1/2W
res 30 3W
Table 5-3. Replaceable Parts List (continued)
Ref. Desig
R29,30
R31
R32
R33
R34
R35
R36,37
R38,39
R41
R43,44
R45
R46
R47, 48
R49
S1
S2
T1
T2
T3
U1
U3
U5
U6
VR1
XA4,5
Agilent Model
6030A
6035A
6030A
6035A
6030A
6035A
6030A
6035A
6030A,35A
6030A,35A
6030A
6035A
6030A,35A
6030A,35A
all
all
all
all
all
all
all
all
6030A
6031A
6032A
6035A
all
all
all
all
all
all
6030A,35A
6031A,32A
6030A
6031A
6032A
6035A
all
all
all
all
all
Agilent Part Number
0811-1887
0811-3557
0757-0367
0698-8959
0686-7535
0698-8959
0757-0451
0757-0471
0757-0438
0698-8827
0811-1909
0811-1913
0757-0467
0764-0041
0698-0085
0698-8827
0757-0419
0698-3622
0757-0401
3101-2046
3101-1914
9100-4350
06030-80090
06011-80090
06032-80090
9100-4827
9100-4864
1906-0389
1826-0393
1826-0643
1990-1074
1902-0955
1252-1052
1251-7891
5060-3520
5060-3524
5060-3523
5060-3521
A1 Mechanical
1205-0282
1205-0862
2110-0726
0403-0086
0380-1692
Description
res 0.05 5% 10W
res 0.5 5% 10W
res 100K 1% 1/2W
res 619K 1% 1/8W
res 75K 5% 1/2W
res 619K 1% 1/8W
res 24.3K 1% 1/8W
res 182K 1% 1/8W
res 5.11K 1% 1/8W
res 1M 1% 1/8W
res 500 5% 10W
res 1.5K 5% 10W
res 121K 1% 1/8W
res 30 5% 2W
res 2.61k 1% 1/8W
res 1M 1% 1/8W
res 681 1% 1/8W
res 120 5% 2W
res 100 1% 1/8W
switch, DPDT slide
switch, 2-DPDT slide
current transformer
power transformer
power transformer
power transformer
power transformer
bias transformer
rectifier bridge
IC, voltage regulator 1.2/37V
IC, voltage regulator 3/30V
IC, opto-isolator
diode, zener, 7.5V
connector 64-pin
connector 64-pin
Output filter board
Output filter board
Output filter board
Output filter board
heatsink (U3)
heatsink (U1)
fuse clips (F1)
bumper foot (R9,10)
standoff, 109mm (4)
83
Table 5-3. Replaceable Parts List (continued)
Ref. Desig
A2
C1-4
C5
C6-7
C8
C9
C10
C11
C12
C13-16
C17
C18
C19
C20
C21,22
C24
C25
C26
C27
C28
C29
C30
C31
C32
C33
C34
C35
C36
C37
C38-40
C41
C42
C43
C44
C45
C46
84
Agilent Model
6030A
6031A
6032A
6035A
all
all
all
all
all
all
all
all
all
6030A,32A,35A
6031A
all
6030A,31A,32A
6035A
6030A,32A,35A
6031A
all
6030A,32A,35A
6031A
6030A,32A,35A
all
6030A,32A,35A
6031A
6030A,32A,35A
6031A
all
all
all
6030A,32A,35A
6031A
6030A
6032A
6035A
6031A
6032A
all
all
6032A
all
all
all
all
all
all
6030A,31A,32A
6035A
Agilent Part Number
06030-60022
06011-60022
06032-60022
06030-60028
0160-5422
0160-4801
0160-5422
0160-5892
0160-5422
0160-4807
0160-5892
0160-4830
0160-5422
0160-4833
0160-4832
0160-5892
0160-5469
0160-5534
0160-5892
0160-5534
0160-5422
0160-0162
0160-0161
0160-4812
0160-4807
0160-5892
0160-5534
0160-4834
0160-4833
0160-5422
0160-4807
0160-5422
0160-5644
0160-4832
0160-4822
0160-4831
0160-4824
0160-4832
0160-4835
0160-5422
0160-4812
0160-4830
0160-5422
0160-4831
0160-4812
0160-4831
0160-5422
0160-4812
0160-5166
0160-4832
Description
Control Board Assembly
"
"
"
cap 0.047µF 20% 50V
cap 100pF 5% 100V
cap 0.047µF 20% 50V
cap 0.22µF 10%
cap 0.047 20% 50V
cap 33pF 5% 100V
cap 0.22µF 10%
cap 2200pF 10% 100V
cap 0.047µF 20% 50V
cap 0.022µF 10% 100V
cap 0.01µF 10% 100V
cap 0.22µF 10%
cap 1µF 10% 50V
cap 0.1µF 10% 63V
cap 0.22µF 10%
cap 0.1µF 10% 63V
cap 0.047µF 20% 50V
cap 0.022µF 10% 200V
cap 0.01µF 10% 200V
cap 220pF 5% 100V
cap 33pF 5% 100V
cap 0.22µF 10%
cap 0.1µF 10% 63V
cap 0.047µF 10% 100V
cap 0.022µF 10% 100V
cap 0.047µF 20% 50V
cap 33pF 5% 100V
cap 0.047µF 20% 50V
cap 0.033µF 10% 50V
cap 0.01µF 10% 100V
cap 1000pF 5% 100V
cap 4700pF 10% 100V
cap 680pF 5% 100V
cap 0.01µF 10% 100V
cap 0.1µF 10% 50V
cap 0.047µF 20% 50V
cap 220pF 5% 100V
cap 2200pF 10% 100V
cap 0.047µF 20% 50V
cap 4700pF 10% 100V
cap 220pF 5% 100V
cap 4700pF 10% 100V
cap 0.047µ F 20% 50V
cap 220pF 5% 100V
cap 0.015µF 20% 100V
cap 0.01µF 20% 100V
Table 5-3. Replaceable Parts List (continued)
Ref. Desig
C47
C48,49
C50
C51
C52
C53
C54
C55
C56,57
C58
C59
C60
C61
C62
C63
C64
C65
C66
C67
C68
C69,70
C71
C72
C73
C74,75
C76
C77
C78
C79
C80
C81
C82
C83
C84
C85
CR1-6
CR7,8
CR9,10
CR11
CR12
CR13,14
CR15,16
CR17,18
CR19
CR20-31
CR32
J1,2
J3
J4
Agilent Model
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
6030A,35A
6031A,32A
all
Agilent Part Number
0160-5422
0160-4835
0180-0291
0180-1731
0180-0230
0180-1731
0180-0291
0180-0230
0160-5422
0160-4801
0160-4835
0160-5422
0160-4812
0160-1835
0180-1980
0180-0116
0160-5422
0160-4801
0160-5422
0160-1822
0160-5422
0180-0376
0180-2624
0180-3407
0160-5098
0160-4835
0160-4833
0160-4832
0160-4830
0160-4813
0160-5422
0160-4812
0160-5422
0160-4812
0160-4832
1901-0033
1901-0050
1901-0033
1901-0050
1901-0033
1901-0050
1901-0033
1901-0050
1901-0033
1901-0050
1901-0992
1251-8417
1251-7743
1251-5927
1251-8676
Description
cap 0.047µF 20% 50V
cap 0.1µF 10% 50V
cap 1µF 10% 35V
cap 4.7µF 50V
cap 1µF 20% 50V
cap 4.7µF 50V
cap 1µF 10% 35V
cap 1µF 20% 50V
cap 0.047µF 20% 50V
cap 100pF 5% 100V
cap 0.1µF 10% 50V
cap 0.047µF 20% 50V
cap 220pF 5% 100V
cap 0.1µF 10% 50V
cap 1µF 5% 35V
cap 6.8µ F 10% 35V
cap 0.047µF 20% 50V
cap 100pF 5% 100V
cap 0.047µF 20% 50V
cap 1000pF 5% 100V
cap 0.047µ F 20% 50V
cap 0.47µF 10% 35V
cap 2000µF 10V
cap 2200µF 35V
cap 0.22µF 10% 50V
cap 0.1µF 10% 50V
cap 0.022µF 10% 100V
cap 0.01µF 10% 100V
cap 2200pF 10% 100V
cap 180pF 5% 100V
cap 0.047µF 20% 50V
cap 220pF 5% 100V
cap 0.047µF 20% 50V
cap 220pF 5% 100V
cap 0.01µF 10% 100V
gen prp 180V 200mA
switching 80V 200mA
gen prp 180V 200mA
switching 80V 200mA
gen prp 180V 200mA
switching 80V 200mA
gen prp 180V 200mA
switching 80V 200mA
gen prp 180V 200mA
switching 80V 200mA
schottky 40V 3A
connector 16-pin
connector 26-pin
connector 26-pin
connector 5-pin
85
Table 5-3. Replaceable Parts List (continued)
Ref. Desig
J5,6
J15
L1
Q1-3
Q4-6
Q7
Q8
Q9
Q10
Q11
R1,2
R3
R4
R5
R6
R7
R8
R9
R10
R11,12
R13
R14,15
R16
R17
R18
R19
R20
R21
R22
R23
R24
R25
R26
R27
R28
R29
R30
R31
R32
R33
R34
86
Agilent Model
all
6030A,35A
all
all
all
all
all
all
all
all
all
all
all
all
6030A
6031A
6032A
6035A
all
all
6030A,31A,32A
6035A
all
6030A,32A,35A
6030A,35A
6032A
all
all
all
all
all
6030A,35A
6031A,32A
6030A,35A
6031A
6032A
all
all
all
all
all
all
all
all
all
6030A,31A,32A
6035A
all
all
6030A,32A,35A
Agilent Part Number
1251-5240
1251-0600
06023-80090
1854-0823
1855-0413
1854-0823
1853-0012
1854-0635
1853-0036
1858-0023
0686-5125
0683-5125
0757-0483
0683-2015
0698-6615
0699-1011
0698-7631
0757-0424
0683-5125
2100-3353
2100-3352
2100-3351
0698-3433
0757-0465
0698-3430
0757-0379
0686-5125
0683-2015
0698-7082
0683-1025
0757-0442
0686-5135
0686-1025
2100-3274
2100-3350
2100-3273
2100-3353
2100-3273
2100-3350
2100-3273
2100-3274
0757-0470
0757-0464
0698-4509
0757-0280
0698-3260
0757-0741
0698-8827
0698-3449
0757-0458
Description
connector 20-pin
connector 1-pin
choke
transistor NPN Si
J-FET P-chan Si
transistor NPN Si
transistor PNP Si
transistor NPN Si
transistor PNP Si
transistor array
res 5.1K 5% 1/2W
res 5.1K 5% 1/4W
res 562K 1% 1/8W
res 200 5% 1/4W
res 3.75K 0.1%
res 3.32K 1% 1/8W
res 2.87K 1%
res 1.1K 1% 1/8W
res 5.1K 5% 1/4W
trimmer 20K 10%
trimmer lK 10%
trimmer 500 10%
res 28.7 1% 1/8W
res 100K 1% 1/8W
res 21.5 1% 1/8W
res 12.1 1% 1/8W
res 5.1K 1/2W
res 200 5% 1/4W
res 100K 1% 1/8W
res 1K 5% 1/4W
res 10K 1% 1/8W
res 51K 5% 1/2W
res 1K 5% 1/4W
trimmer 10K 10%
trimmer 200 10%
trimmer 2K 10%
trimmer 20K 10%
trimmer 2K 10%
trimmer 200 10%
trimmer 2K 10%
trimmer 10K 10%
res 162K 1% 1/8W
res 90.9K 1% 1/8W
res 80.6K 1% 1/8W
res 1K 1% 1/8W
res 464K 1% 1/8W
res 182K 1% 1/8W
res 1M 1% 1/8W
res 28.7K 1% 1/8W
res 51.1K 1% 1/8W
Table 5-3. Replaceable Parts List (continued)
Ref. Desig
R35
R36
R37
R38
R39
R40
R41
R42
R43
R44
R45
R46
R47
R48
R49
R50
R51
R52
R53
R54
R55
R56
R57
Agilent Model
6031A
6030A,35A
6031A
6032A
all
all
6030A,35A
6031A,32A
all
6030A,32A
6035A
6035A
6030A
6031A
6032A
6035A
6030A,35A
6031A
6032A
6030A,35A
6031A
6032A
all
all
6030A,32A,35A
6031A
6030A,32A,35A
6031A
all
6030A
6031A
6032A
6035A
6030A,35A
6031A,32A
6030A,32A,35A
6031A
6030A,35A
6031A
6032A
6030A,35A
6031A
6032A
all
6030A,35A
6031A
6032A
6030A,32A,35A
6031A
6030A,31A,32A
Agilent Part Number
0757-0442
0683-1055
0683-3355
0683-1555
0698-3455
0698-4536
0698-4536
0698-3455
0683-4725
0699-1210
0698-6979
0683-2055
0699-1744
0699-0118
0699-1210
0699-3104
0699-1742
0699-0059
0699-0642
0699-1743
0699-0118
0699-1211
0757-0199
0698-8816
0683-1255
0698-4539
0757-0470
0757-0458
0757-0458
0699-1745
7175-0057
0698-7496
0698-6369
0686-5135
0686-1025
7175-0057
0698-3433
0699-1742
0699-0059
0699-0642
0757-0451
0757-0462
0757-0458
0698-3450
0757-0451
0757-0462
0757-0458
0757-0199
7175-0057
0698-3155
Description
res 10K 1% 1/8W
res 1M 5% 1/4W
res 3.3M 5% 1/4W
res 1.5M 5% 1/4W
res 261K 1% 1/8W
res 340K 1% 1/8W
res 340K 1% 1/8W
res 261K 1% 1/8W
res 4.7K 5% 1/4W
res 80K 0.1% 0.1W
res 111.1K 1%
assembled
res 2M 1%
in parallel
res 280K 1% 0.1W
res 20K 0.1% 0.1W
res 80K 0.1% 0.1W
res 250K 0.1% 0.1W
res 70K 0.1% 0.1W
res 5K 0.1% 0.1W
res 10K 0.1% 0.1W
res 345K 0.1% 0.1W
res 20K 0.1% 0.1W
res 95K 0.1% 0.1W
res 21.5K 1% 1/8W
res 2.15 1% 1/8W
res 1.2M 5% 1/4W
res 402K 1% 1/8W
res 162K 1% 1/8W
res 51.1K 1%
res 51.1K 1%
res 560K 0.1% 1/4W
jumper
res 20K 0.1% 1/4W
2 - resistors 1M 1% (assembled in series )
res 51K 5% 1/2W
res 1K 5% 1/2W
jumper
res 28.7 1% 1/8W
res 70K 0.1% 0.1W
res 5K 0.1% 0.1W
res 10K 0.1% 0.1W
res 24.3K 1% 1/8W
res 75K 1% 1/8W
res 51.1K 1% 1/8W
res 42.2K 1% 1/8W
res 24.3K 1% 1/8W
res 75K 1% 1/8W
res 51.1K 1% 1/8W
res 21.5K 1% 1/8W
jumper
res 4.64K 1% 1/8W
├
87
Table 5-3. Replaceable Parts List (continued)
Ref. Desig
R57
R58
R59,60
R61
R62
R63
R64
R65
R66
R67
R68
R69
R70
R71
R72
R73
R74
R75
R76
R77
R78
R79,80
R81
R82
R83
R84
R85
R86
R87
R88
88
Agilent Model
6035A
6030A
6031A
6032A
6035A
6030A
6031A
6032A
6035A
6030A
6031A
6032A
6035A
all
all
6030A,32A,35A
6031A
6032A
all
6031A
6032A
all
all
all
all
all
6030A,35A
6031A
6032A
all
all
all
all
all
all
6030A,32A,35A
6031A
all
all
all
all
all
6030A
6031A
6032A
6035A
6030A
6031A
6032A
6035A
Agilent Part Number
0757-0124
0757-0344
0757-0449
0698-3572
0699-1630
0698-4486
0757-0442
0757-0438
0698-7668
0757-0344
0757-0449
0698-3572
0699-1630
0757-0124
0683-1015
0757-0124
0757-0270
0757-0473
0683-4725
0757-0459
0757-0123
0757-0270
0683-1015
0757-0449
0698-0085
0757-0452
0757-0289
0757-0442
0757-0461
0757-0460
0698-8827
0757-0438
0683-4715
0698-6322
0683-2035
0757-0419
0698-3444
0683-4715
0698-6322
0698-6320
0698-6983
0757-0465
0699-1741
0698-6322
0698-7933
0699-2850
0699-1745
0698-8695
0698-6979
0698-6950
Description
res 39.2K 1% 1/8W
res 1M 1% 1/4W
res 20K 1% 1/8W
res 60.4K 1% 1/8W
res 4M 0.25% 1/2W
res 24.9K 1% 1/8W
res 10K 1% 1/8W
res 5.11K 1% 1/8W
res 39.91K 1%
res 1M 1% 1/4W
res 20K 1% 1/8W
res 60.4K 1% 1/8W
res 4M 0.25% 1/2W
res 39.2K 1% 1/8W
res 100 5% 1/4W
res 39.2K 1% 1/8W
res 249K 1% 1/8W
res 221K 1% 1/8W
res 4.7K 5% 1/4W
res 56.2K 1% 1/8W
res 34.8K 1% 1/8W
res 249K 1% 1/8W
res 100 5% 1/4W
res 20K 1% 1/8W
res 2.61K 1% 1/8W
res 27.4K 1% 1/8W
res 13.3K 1% 1/8W
res 10K 1% 1/8W
res 68.1K 1% 1/8W
res 61.9K 1% 1/8W
res 1M 1% 1/8W
res 5.11K 1% 1/8W
res 470 5% 1/4W
res 4K 1% 1/8W
res 20K 5% 1/4W
res 681 1% 1/8W
res 316 1% 1/8W
res 470 5% 1/4W
res 4K 1% 1/8W
res 5K 0.1% 1/8W
res 20.4K 0.1% 1/8W
res 100K 1% 1/8W
res 5.657K 0.1% 1/8W
res 4K 1% 1/8W
res 3.83K 0.1% 1/8W
res 10.04K 0.1%
res 500 0.1% 1/8W
res 36K 0.1% 1/8W
res 111.1K 01% 1/8W
2 - resistors 1.25M .1% (assembled in series )
Table 5-3. Replaceable Parts List (continued)
Ref. Desig
R89-91
R92
R93
R94,95
R96
R97
R98
R99
R100
R101
R102
R103
R104,105
R106
R107
R108
R109
R110
R111
R112
R113
R114
R115
R116,117
R118
R119
R120
R121
R122
R123
R124
R125
R126
R127
R128
R129
R131
R132
R133
R134
R135
R136
R137
R138
Agilent Model
all
6030A,35A
6031A
6032A
all
all
all
all
all
all
all
all
all
all
all
6030A,35A
6031A,32A
6030A,35A
6031A,32A
6030A,35A
6031A,32A
6030A,35A
6031A,32A
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
Agilent Part Number
0683-2225
0898-4480
0757-0457
0757-0464
0683-3325
0683-2225
0757-0481
0757-0290
0757-0444
0698-4416
0757-0404
0698-4608
0698-4447
0698-4416
0683-4725
0757-0404
0683-2715
0757-0404
0683-1815
0757-0404
0683-2715
0757-0404
0683-1815
0683-5105
0683-2035
0757-0199
0757-0283
0683-2225
0757-0280
0757-0346
0698-3498
0757-0438
0683-4725
0683-2025
0683-1025
0683-4715
0757-0442
0757-0465
0757-0442
0698-8827
0698-3136
0698-4121
0757-0449
1810-0205
0683-5625
0683-1025
0683-1855
0757-0420
0698-4435
0757-0199
Description
res 2.2K 5% 1/4W
res 15.8K 1% 1/8W
res 47.5K 1% 1/8W
res 90.9K 1% 1/8W
res 3.3K 5% 1/4W
res 2.2K 5% 1/4W
res 475K 1% 1/8W
res 6.19K 1% 1/8W
res 12.1K 1% 1/8W
res 169 1% 1/8W
res 130 1% 1/8W
res 806 1% 1/4W
res 280 1% 1/8W
res 169 1% 1/8W
res 4.7K 5% 1/4W
res 130 5% 1/4W
res 270 5% 1/4W
res 130 5% 1/4W
res 180 5% 1/4W
res 130 5% 1/4W
res 270 5% 1/4W
res 130 5% 1/4W
res 180 5% 1/4W
res 51 5% 1/4W
res 20K 5% 1/4W
res 21.5K 1% 1/8W
res 2K 1% 1/8W
res 2.2K 5% 1/4W
res 1K 1% 1/8W
res 10 1% 1/8W
res 8.66K 1% 1/8W
res 5.11K 1% 1/8W
res 4.7K 5% 1/4W
res 2K 5% 1/4W
res 1K 5% 1/4W
res 470 5% 1/4W
res 10K 1% 1/8W
res 100K 1% 1/8W
res 10K 1% 1/8W
res 1M 1% 1/8W
res 17.8K 1% 1/8W
res 11.3K 1% 1/8W
res 20K 1% 1/8W
network, sip 4.7K X7
res 5.6K 5% 1/4W
res 1K 5% 1/4W
res 1.8M 5% 1/4W
res 750 1% 1/4W
res 2.49K 1% 1/8W
res 21.5K 1% 1/8W
89
Table 5-3. Replaceable Parts List (continued)
Ref. Desig
R139
R140
R141
R142
R143
R144
R145
R146
R147
R148
R149
R150
R151
R152
R153
R154
R155
R156
R157
R158
R159,160
R161
R162
R163
R164
R165
R166,167
R168
R169
R170
R171
R172
R173
R174
R175
R176
R177
R178,179
R180
R182
S1
U1-3
U4,5
U6
U7
U8
U9
U10
U11
90
Agilent Model
all
all
all
all
all
all
all
all
all
all
all
6030A,35A
6031A,32A
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
Agilent Part Number
0683-4725
0683-2025
0683-5135
0683-6835
0683-4725
0757-0415
0683-1005
0683-1035
0683-5115
0757-0422
0683-2025
0754-0404
0683-2715
0683-4725
0757-0442
0757-0443
0757-0451
0757-0444
0683-4725
0683-1005
0686-2005
0680-6215
0757-0283
0757-0442
0757-0283
0757-0434
0683-1035
0686-1315
0683-1515
0757-0124
0698-3136
0757-0280
0811-3174
0683-2225
0683-3625
0683-1525
0683-2225
0683-0335
0683-4725
0683-1045
0698-8827
3101-2097
1826-0493
1826-0161
1826-0346
1826-0544
1826-0138
1820-0935
1826-0065
1826-0393
Description
res 4.7K 5% 1/4W
res 2K 5% 1/4W
res 51K 5% 1/4W
res 68K 5% 1/4W
res 4.7K 5% 1/4W
res 475 1% 1/8W
res 10 5% 1/4W
res 10K 5% 1/4W
res 510 5% 1/4W
res 909 1% 1/8W
res 2K 5% 1/4W
res 130 5% 1/4W
res 270 5% 1/4W
res 4.7K 5% 1/4W
res 10K 1% 1/8W
res 11K 1% 1/8W
res 24.3K 1% 1/8W
res 12.1K 1% 1/8W
res 4.7K 5% 1/4W
res 10 5% 1/4W
res 20 5% 1/2W
res 620 5% 1/2W
res 2K 1% 1/8W
res 10K 1% 1/8W
res 2K 1% 1/8W
res 3.65K 1% 1/8W
res 10K 5% 1/4W
res 130 5% 1/2W
res 150 5% 1/4W
res 39.2K 1% 1/8W
res 17.8K 1% 1/8W
res 1K 1% 1/8W
res 0.07 5% 5W
res 2.2K 5% 1/4W
res 3.6K 5% 1/4W
res 1.5K 5% 1/4W
res 2.2K 5% 1/4W
res 3.3 5% 1/4W
res 4.7K 5% 1/4W
res 100K 5% 1/4W
res 1M 1% 1/8W
switch (6) lA
IC op amp Lo-bias Hi-impedance
IC op amp quad general purpose
IC op amp dual general purpose
IC voltage reference 2.5V
IC comparator quad
IC counter binary CMOS
IC comparator precision
IC voltage regulator 1.2/37V
Table 5-3. Replaceable Parts List (continued)
Ref. Desig
U12
U13
U15
U16
U17
U18
U19
U20
U21
U22
U23
VR1
VR2
VR3,4
VR5
VR6
W1-3
Y1
A3
C1-4
C5
C6-9
C10
C11-13
DS1-6
DS7-12
DS13-15
DS16-23
G1
J1
J2,3
L1
R1
R2
R3-5
R6-38
R40-64
R65-68
R69-71
R72
R73
S1-5
Agilent Model
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
Agilent Part Number
1826-0527
1820-1287
1820-1272
1820-1437
1826-0138
1820-1205
1820-1112
1820-2096
1826-0544
1826-0428
1826-0065
1902-3110
1902-0777
1902-0018
1902-0575
7175-0057
7175-0057
0960-0586
Description
IC voltage regulator 1.2/37V
IC buffer quad NAND
IC buffer quad NOR
IC multivibrator monostable dual
IC comparator quad
IC gate dual AND
IC flip flop D-type
IC counter binary dual
IC voltage reference 2.5V
IC voltage regulator 1/40V
IC comparator precision
diode, zener 5.9V 2%
diode, zener 6.2V
diode, zener 11.7V
diode, zener 6.5V 2%
jumper
jumper
resonator, ceramic
all
all
all
all
all
A2 Mechanical
1205-0282
1200-0485
1200-0181
0360-2195
0360-2192
heat sink (Q9, U11, U12)
IC socket (S1)
insulator, (Q8)
terminal block, 6-position
terminal block, 2-position
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
06031-60020
0160-5422
0180-0374
0160-5422
0180-0374
0160-5422
1990-0835
1990-0831
1990-0835
1990-0985
06032-60006
1251-8417
1251-8675
9100-1618
1810-0272
0683-2225
0683-3315
0683-4715
0683-4715
0683-2225
0683-3315
2100-1775
0683-1015
5060-9436
Front Panel Board
cap 0.047µF 20% 50V
cap 10µF 20%
cap 0.047µF 20% 50V
cap 10µF 20%
cap 0.047µF 20% 50V
LED
LED
LED
display-kit
rotary pulse generator
connector 16-pin
connector 5-pin
coil 5.6µH 10%
network, sip 330 X9
res 2.2K 5% 1/4W
res 330 5% 1/4W
res 470 5% 1/4W
res 470 5% 1/4W
res 2.2K 5% 1/4W
res 330 5% 1/4W
trimmer 5K 5%
res 100 5% 1/4W
switch, lighted pushbutton
91
Table 5-3. Replaceable Parts List (continued)
Ref. Desig
U1-4, 6-11
U5
U12
U13
U14
U15
U16
U17
A4
C1
C2
C3
C4
C5,6
C7
C8
CR1
CR2,3
CR4
CR5-11
F1,2
L14
P1
Q1-4
Q5,6
R1-4
R5-8
R9-11
R12
R13-16
R17-19
R20
R21
R22
R23,24
R25
R26
R27
R28
R29-33
R34
TS1
T1
T2
U1-3
VR1,2
92
Agilent Model
all
all
all
all
all
all
all
all
Agilent Part Number
1820-1433
1820-1216
1820-1216
1820-1112
1820-1199
1820-1197
1820-1433
1820-1975
all
A3 Mechanical
4040-1615
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
06011-60023
0160-4569
0160-5981
0160-4569
0160-5981
0160-4835
0180-0116
0180-0228
1901-1418
1901-1087
1901-1418
1901-0050
2110-0671
9100-1610
1252-1053
1855-0473
1854-0585
0811-1065
0698-3609
0698-5139
0757-0466
0698-3609
0698-5139
0757-0379
0683-1505
0683-1815
0686-2005
0757-0466
0683-1815
0757-0379
0683-1505
0683-0475
0683-0275
3103-0081
06011-80091
06011-80095
1820-1050
1902-0779
Description
IC shift register, 8-bit
IC decoder, 3-to-8 line
IC decoder, 3-to-8 line
IC flip flop, D-type
IC inverter, HEX
IC gate quad NAND
IC shift register, 8-bit
IC shift register, 8-bit
stand off (DS1-15)
FET Board
cap 0.01µF 10% 800Vdc
cap 0.047µF 10% 630Vdc
cap 0.01µF 10% 800Vdc
cap 0.047µF 10% 630Vdc
cap 0.1µF 10% 50V
cap 6.8µF 10% 35V
cap 22µF 10% 15V
power rectifier 600V
power rectifier 600V
power rectifier 600V
diode, switching 80V 200mA
fuse 125mAM, 125V
coil 0.15µH 20%
connector 64-pin
FET N-channel
transistor NPN Si
res 150 5% 10W
res 22 5% 2W
res 3.9 5% 5W
res 110K 1% 1/8W
res 22 5% 2W
res 3.9 5% 0.5W
res 12.1 1% 1/8W
res 15 5% 1/4W
res 180 5% 1/4W
res 20 5% 1/2W
res 110K 1% 1/8W
res 180 5% 1/4W
res 12.1 1% 1/8W
res 15 5% 1/4 W
res 4.7 5% 1/4W
res 2.7 5% 1/4W
switch, thermal +202F
transformer
transformer
IC driver dual NOR
diode, zener 11.8V 5%
Table 5-3. Replaceable Parts List (continued)
Ref. Desig
A5
C1
C2
C3
C4
C5
C7
CR1
CR2
CR3
CR4
CR5
CR6
F1
L1
L2
L3
P1
Agilent Model
Agilent Part Number
A4 Mechanical
Description
all
all
all
all
all
1205-0398
1252-0093
06032-20001
06032-20002
0380-1524
heatsink (CR1,4)
socket pin (Q1-4) (8)
heatsink (Q1,Q2)
heatsink (Q3,Q4)
standoff, hex (7)
6030A
6031A
6032A
6035A
6030A,32A,35A
6031A
6030A
6031A
6032A
6035A
6030A,32A,35A
6031A
6030A,32A
6031A
6035A
6030A
6031A
6035A
6035A
6030A,32A,35A
6031A
6030A,32A,35A
6031A
all
6030A
6031A
6032A
6035A
6030A
6031A
6035A
6030A,35A
6031A,32A
6030A
6031A
6032A
6035A
6030A
6031A
6035A
6030A, 35A
all
06030-60024
06011-60024
06032-60029
06030-60029
0180-3167
0160-4832
0160-5464
0160-5422
0160-4569
0160-7222
0160-5422
0180-3167
0160-4832
0160-6077
0160-4835
0160-5464
0160-6077
0160-7222
0160-5166
1901-0050
1901-1127
1901-0731
1901-0050
1901-0050
1901-1542
1901-0731
1901-0887
1901-1388
1901-1542
1901-1127
1901-1388
1902-3203
2110-0546
9170-1334
06011-80003
9170-0707
5080-2132
9170-1334
06011-80003
5080-2132
9170-0894
1252-1053
Diode Board
"
"
"
cap 1000µF 20% 25V
cap 0.01µF 10% 100V
cap 0.01µF 5% 1.5KVdc
cap 0.047µF 20% 50V
cap 0.01µF 10% 800Vdc
cap 0.0022µF 10% 1600Vdc
cap 0.047µF 20% 50Vdc
cap 1000µF 25V
cap 0.01µF 10% 100Vdc
cap 0.015µF 200V
cap 0.1µF 10% 50V
cap 0.01µF 5% 1.5KVdc
cap 0.015µF 200V
cap 0.0022µF 10% 1600Vdc
cap 0.015µF 10% 100Vdc
diode, switching 80V 200ma
power rectifier 150V 70A
power rectifier 400V lA
diode, switching 80V 200ma
diode, switching 80V 200mA
power rectifier 400V 50A
power rectifier 400V lA
power rectifier 300V 50A
power rectifier lKV 40A
power rectifier 400V 50A
power rectifier 150V 70A
power rectifier lKV 40A
diode, zener 14.7V 5%
fuse 5AM, 125V
ferrite core (jumper 5080-2065)
ferrite core (jumper 8150-4777)
ferrite core (jumper 06012-80003)
inductor L2
ferrite core (jumper 5080-2065)
ferrite core (jumper 8150-4777)
inductor
core shield bead (ref Q1)
connector 64-pin
93
Table 5-3. Replaceable Parts List (continued)
Ref. Desig
Q1
Q2
R1
R2
R3
R4
R5
R6
R7
R8
R9
R10
R11
R12
R13
R14
R15
R16
R17
R18
94
Agilent Model
6030A, 35A
6031A
6032A
6031A
6032A
6030A,32A,35A
6031A
6030A,32A,35A
6031A
6030A,32A,35A
6031A
6030A,32A,35A
6031A
6030A,32A,35A
6031A
6030A,32A,35A
6031A
6030A, 35A
6031A
6032A
6030A,32A,35A
6031A
6030A
6031A
6032A
6035A
6030A, 35A
6031A
6032A
6031A
6032A
6030A, 32A, 35A
6031A
6030A, 32A, 35A
6031A
6030A
6031A
6032A
6035A
6030A
6031A
6032A
6035A
6030A
6031A
6035A
6030A
6031A
6035A
6030A
Agilent Part Number
1855-0767
1854-0264
1855-0549
1855-0549
1854-0755
0683-1855
0811-3460
0698-3151
0686-1005
0757-0459
0683-1025
0698-3202
0757-0317
0757-0317
0698-4196
0683-1045
0698-4211
0683-2735
0757-0465
0683-1025
0698-7332
0757-0447
0698-8144
0757-0428
0757-0480
0683-2055
0698-3512
0698-3601
0698-4196
0698-3601
0686-1005
0757-0447
0698-3609
0683-1005
0698-3609
0811-1746
0757-0459
0811-3290
0811-0923
0811-3729
0683-1855
0811-1068
0811-3842
0811-3729
0698-7332
0811-3842
0811-3729
0698-4444
0811-3842
0811-3729
Description
FET N-channel
transistor NPN, Si
FET N-channel
FET N-channel
transistor NPN Si
res 1.8M 5% 1/4W
res 0.05 5% 5W
res 2.87K 1% 1/8W
res 10 5% 1/2W
res 56.2K 1% 1/8W
res 1K 5% 1/8 W
res 1.74K 1% 1/8W
res 1.33K 1% 1/8W
res 1.33K 1% 1/8W
res 1.07K 1% 1/8W
res 100K 5% 1/4W
res 158K 1% 1/8W
res 26K 5% 1/4W
res 100K 1% 1/8W
res 1K 5% 1/4W
res 1M 1% 1/8W
res 16.2K 1% 1/8W
res 787K 1% 1/8W
res 1.62K 1% 1/8W
res 432K 1% 1/8W
res 2M 5%
res 1.8K 1% 1/8W
res 10 5% 2W
res 1.07K 1% 1/8 W
res 10 5% 2W
res 10 5% 1/2W
res 16.2K 1% 1/8W
res 22 55% 2W
res 10 5% 1/4W
res 22 55% 2W
res 0.36 5% 2W
res 56.2K 1% 1/8W
res 0.1 5% 2W
res 0.91 5% 2W
res 250 5% 10W
res 1.8M 5% 1/4W
res 50 5% 10W
res 600 10% 10W
res 250 5% 10W
res 1M 1% 1/8W
res 600 10% 10W
res 250 5% 10W
res 4.87K 1% 1/8W
res 600 10% 10W
res 250 5% 10W
Table 5-3. Replaceable Parts List (continued)
Ref. Desig
R18
R20
T1
TS1
U1
VR1
Agilent Model
6031A
6035A
6030A, 35A
6031A
all
all
all
6030A,35A
6030A,35A
6030A,35A
6030A,35A
6031A
6031A
6031A
6031A
6031A
6032A
6032A
6032A
6032A
6032A
A6
C101
C102
C103
C104
C105
C106, 107
C108, 109
L101
R101
W101-103
6030A,31A,32A
6035A
6030A,31A,32A
6035A
6030A,31A,32A
6035A
6030A,31A,32A
6035A
6030A,31A,32A
6035A
all
6030A,31A,32A
6035A
all
all
all
all
all
Agilent Part Number
0683-1005
0811-3842
0811-3731
9170-0061
3103-0081
1826-0346
1902-0575
Description
res 10 10% 1/4W
res 600 10% 10W
res 1.2 K% 2W
magnetic-core (jumper 8150-4777)
switch, thermal +202F
IC op amp
diode, zener 6.5 V 2%
A5 Mechanical
5020-2877
5020-2878
0340-1123
1251-7600
06011-20001
1205-0520
1205-0398
0380-1524
06011-00001
06032-00018
1205-0398
1251-7600
0380-1524
06032-00017
heatsink (CR5)
heatsink (CR4, Q1)
insulator (L1,2) (6)
socket pin (Q1) (2)
heatsink (CR1,CR5)
heatsink (Q1)
heatsink (Q2)
standoff, hex (4)
bracket (CR1, CR5 heatsink)
heatsink (CR4,Q2)
heatsink (Q1)
socket pin (Q2) (2)
standoff, hex (4)
bracket (CR4, Q2 heatsink)
5060-3522
06011-60028
0160-4355
0160-4048
0160-4281
0160-4439
0160-4355
0160-4048
0160-4281
0160-4439
0160-4962
0160-4183
0160-4439
0160-4962
66000-80004
0686-3945
1251-5613
AC Input Filter
''
cap 0.01µF 10% 250Vac
cap 0.022µF 10% 250Vac
cap 2200pF 20% 250Vac
cap 0.0047µF 10% 250Vac
cap 0.01µF 10% 250Vac
cap 0.022µF 10% 250Vac
cap 2200pF 20% 250Vac
cap 0.0047µF 10% 250Vac
cap 1µF 20% 250Vac
cap 1000pF 20% 250Vac
cap 0.0047µF 10% 250Vac
cap 1µF 20% 250V
choke, input
res 390K 5% 0.5W
connector, single
A6 Mechanical
0360-2217
terminal block 3-position
95
Table 5-3. Replaceable Parts List (continued)
Ref. Desig
A8
C1
C2,3
C4
C5
C6
C7,8
C9
C10
C11,12
C13
C14
C15
C16
C22
C23
C24
C25,26
C27
C28-31
C32-37
C38
C39,40
C41,42
C43-47
C48
C49-51
C52
C53-58
C59,60
C61
C62,63
C64
C65
C66
C67-70
C71,73
C142
C143,144
D8,9
D13-17
D20,21
D22
F1,2
J1,2
J3
J4
J5
J6
J7,8
96
Agilent Model
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
Agilent Part Number
5063-3463
0160-5422
0160-4807
0160-5422
0160-4822
0180-0197
0160-4807
0160-5422
0160-4801
0160-5422
0160-4801
0160-4832
0160-5422
0160-4801
0180-3798
0180-4136
0180-0393
0160-5422
0180-0374
0160-5469
0160-5422
0180-0116
0160-5422
0160-4820
0160-5422
0180-0116
0160-5422
0160-4822
0160-5422
0160-4822
0160-4830
0160-4807
0160-5422
0180-0393
0160-5422
0160-4832
0160-4830
0160-4801
0160-5422
1901-0731
1901-1098
1901-1080
1901-1098
2110-0712
1251-7330
1200-0485
1252-0268
1251-4926
1251-4927
1251-8417
Description
GPIB Board
cap 0.047µF 20% 50V
cap 33pF 5% 100V
cap 0.047µF 20% 50V
cap 1000pF 100V
cap 2.2µF 10% 20V
cap 33pF 5% 100V
cap 0.047µF 20% 50V
cap 100pF 5% 100V
cap 0.047µF 20% 50V
cap 100pF 5% 100V
cap 0.01µF 10% 50V
cap 0.047µF 20% 50V
cap 100pF 5% 100V
cap 4700µF 25V
cap 10µF 10% 20V
cap 39µF 10% 10V
cap 0.047µF 20% 50V
cap 10µF 10% 20V
cap 1µF 10% 50V
cap 0.047µF 20% 50V
cap 6.8µF 10% 35V
cap 0.047µF 20% 50V
cap 1800pF 5% 100V
cap 0.047µF 20% 50V
cap 6.8µF 10% 35V
cap 0.047µF 20% 50V
cap 1000pF 100V
cap 0.047µF 20% 50V
cap 1000pF 100V
cap 2200pF 10% 250V
cap 33pF 5% 100V
cap 0.047µF 20% 50V
cap 39µF 10% 10V
cap 0.047µF 20% 50V
cap 0.01µF 10% 50V
cap 2200pF 10% 250V
cap 100pF 5% 100V
cap 0.047µF 20% 50V
diode, power rectifier
diode, switching
diode, 1N5817
diode, switching
fuse, 4AM, 125V
telephone jacks
right angle socket
GPIB connector
connector 8-contact
connector 16-contact
connector 16-contact
Table 5-3. Replaceable Parts List (continued)
Ref. Desig
J9
J10
L1
L2-4
Q1,4
R1
R2
R3
R4
R5
R6
R7
R8-11
R12
R14
R15-17
R18
R19
R20-22
R23
R24,26
R28
R29
R30
R32
R33
R34
R35
R36
R37
R39
R40
R41
R42
R43
R44
R45
R46
R48
R49
R50
R51
R52
R55,58
R59,60
R61
R62-64
R65
R66
R67
Agilent Model
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
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all
all
all
all
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all
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all
all
all
all
all
all
Agilent Part Number
1251-4927
1251-5384
9170-1680
9170-1454
1853-0089
0757-0457
0698-3155
0757-0442
0698-3155
0683-1065
0698-4037
0698-3155
0757-0401
0698-3155
0698-0082
0698-4037
0757-0280
0698-8827
0698-3155
0698-0082
0698-3156
0699-0059
2100-3353
0699-0642
0757-0457
0698-6360
0757-0401
0699-0059
0757-0316
0699-0642
0757-0270
2100-3353
0757-0401
0757-0411
0699-0059
0757-0316
0699-0642
0757-0411
0757-0457
0698-6360
0757-0401
2100-3353
0698-3156
2100-3732
0698-3558
2100-3732
0698-3558
0757-0280
0698-3558
0698-6320
Description
connector 16-contact
connector 3-contact
choke
core-shield bead
transistor 2N4917
res 47.5 1% 1/8W
res 4.64K 1% 1/8W
res 10K 1% 1/8W
res 4.64K 1% 1/8W
res 10M 5% 1/4W
res 46.4 1% 1/8W
res 4.64K 1% 1/8W
res 100 1% 1/8W
res 4.64K 1% 1/8W
res 464 1% 1/8W
res 46.4 1% 1/8W
res 1K 1% 1/8W
res 1M 1% 1/8W
res 4.64K 1% 1/8W
res 464 1% 1/8W
res 14.7K 1% 1/8W
res 5K 0.1% 1/10W
trimmer 20K 10%
res 10K 0.1% 1/10W
res 47.5K 1% 1/8W
res 10K 0.1% 1/8W
res 100 1% 1/8W
res 5K 0.1% 1/10W
res 42.2 1% 1/8W
res 10K 0.1% 1/10W
res 249K 1% 1/8W
trimmer 20K 10%
res 100 1% 1/8W
res 332 1% 1/8W
res 5K 0.1% 1/10W
res 42.2 1% 1/8W
res 10K 0.1% 1/10W
res 332 1% 1/8W
res 47.5K 1% 1/8W
res 10K 0.1% 1/8W
res 100 1% 1/8W
trimmer 20K 10%
res 14.7K 1% 1/8W
trimmer 500 10%
res 4.02K 1% 1/8W
trimmer 500 10%
res 4.02K 1% 1/8W
res 1K 1% 1/8W
res 4.02K 1% 1/8W
res 5K 0.1% 1/8W
97
Table 5-3. Replaceable Parts List (continued)
Ref. Desig
R68
R69
R70
R71
R72
R73
R74
R75
R76
R78
R79,80
R82
R83-88
R89
R90,98,99
R101
R102
R103
R106
R109,110
R111
R112
S1
TBl
U1
U2
U4
U5
U6
U7
U8
U9
U11
U12
U13
U14
U16
U19
U20
U24
U25
U28
U31
U32
U33
U35
U36
U37
U64-69
U70
98
Agilent Model
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all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
Agilent Part Number
0757-0400
0698-6320
0757-0400
0698-6320
0757-0400
0757-0451
0757-0199
2100-3273
0698-3455
0698-3156
8159-0005
0698-0082
0698-3155
0757-0280
0698-3155
0698-6360
0698-3558
0698-3455
1810-0206
0698-3155
0757-0316
1810-0305
3101-1973
0360-2312
1826-0468
5080-2157
1820-8773
1826-1369
5080-2624
1826-2187
1818-4134
1826-2187
1826-2187
1820-3210
1990-0543
1821-1479
1820-2724
1826-0161
1826-0609
1826-1475
1826-1896
1990-1387
1820-6789
1990-1387
1826-0536
5080-2156
5080-2625
1820-4185
1826-1896
1818-4932
Description
res 90.9 1% 1/8W
res 5K 0.1% 1/8W
res 90.9 1% 1/8W
res 5K 0.1% 1/8W
res 90.9 1% 1/8W
res 24.3K 1% 1/8W
res 21.5K 1% 1/8W
trimmer 2K 10%
res 261K 1% 1/8W
res 14.7K 1% 1/8W
res 0 ohm
res 464 1% 1/8W
res 4.64K 1% 1/8W
res 1K 1% 1/8W
res 4.64K 1% 1/8W
res 10K 0.1% 1/8W
res 4.02K 1% 1/8W
res 261K 1% 1/8W
network, sip 10K X7
res 4.64K 1% 1/8W
res 42.2 1% 1/8W
network, sip 4.7K X8
GPIB switch
terminal block 4-contact
IC MC3423P1 0V-level detect
IC GAL programmed
IC 80C51 microprocessor
IC LT1021 voltage regulator 10V
IC EPROM AM27512
IC converter PM-7545
IC RAM MCM6164C55
IC converter PM-7545
IC converter PM-7545
IC UART MC68B50P
IC opto-isolator
IC 80C196 microprocessor
IC latch 74HC373
IC LM324N quad op amp
IC 8-input multiplexer
IC LT1011 comparator
IC LT1001 op amp
IC opto-isolator
IC 75176B RS485 driver
IC opto-isolator
IC LM340AK-5 voltage regulator 5V
IC GAL programmed
IC GAL programmed
IC DS3658N interface
IC LT1001 op amp
IC EEPROM NMC9346
Table 5-3. Replaceable Parts List (continued)
Ref. Desig
U115
U116
U117
VR2
VR3,4
VR6,7,8
Y1,2
Agilent Model
all
all
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all
all
Agilent Part Number
1820-6045
1820-6170
1821-1740
1902-3172
1902-0049
1902-0766
0410-2109
Description
IC SN75ALS61610
IC SN75ALS6160
IC 9914 talker/listener
diode, zener 11V
diode, zener 6.19V
diode, zener 18.2V
oscillator 12MHz
A8 Mechanical
1205-0564
5001-6732
heat sink (U33)
GPIB mounting plate
A9
C1,2
C3
CR1
CR2,3
R1-4
6035A
6035A
6035A
6035A
6035A
6035A
5060-3401
0180-4231
0160-2569
1901-0325
1901-0759
0764-0027
B1
C6
C2
all
6030A
6030A
6031A
6032A
all
all
all
all
all
all
all
Chassis Electrical
3160-0097
0160-2569
0180-3703
0180-3493
0180-3491
3105-0126
5080-2307
3101-0402
06032-60003
8120-4352
06032-60002
8120-4356
all
all
all
all
all
6030A
6031A
6032A
6035A
all
all
all
all
all
all
all
Chassis Mechanical
06032-00025
5021-8403
5041-8802
5001-0539
06032-00015
06030-00012
06031-00013
06032-00023
06035-00001
01650-47401
2190-0736
5041-0309
5041-2089
4040-1954
06032-00011
06032-00012
CB1
L4
S3
W1
W2
W3
W5,6
Output Board
cap 750µF 350V
cap 0.02µF 2KV
diode 700V 35A
diode 600V 3A
res 75K 5% 2W
fan
cap 0.02µF 20% 2KVdc (output board)
cap 1500µF 250V (output board)
cap 10000µF 40V (output board)
cap 2600µF 75V (output board)
circuit breaker 25A 250Vac
choke (input line) 380µH
switch DPST (on/off)
ribbon cable (A3 to A8)
cable assembly, 3-pin (A1 to A8)
cable assembly, 5-pin (A2 to A3)
ribbon cable (A2 to A8)
chassis
front frame casting
top trim strip
side trim strip (2)
front sub-panel
front panel, screened
front panel, screened
front panel, screened
front panel, screened
knob, RPG adjust
spacer
plain key cap (4)
lettered key cap (LCL)
display window
fan baffle
dc output plate (lettered)
99
Table 5-3. Replaceable Parts List (continued)
Ref. Desig
Agilent Model
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100
Agilent Part Number
Chassis Mechanical
(cont)
06032-00010
0340-1095
0380-1362
1510-0044
0400-0086
5001-6739
5001-6738
06032-00024
5040-1626
5040-1627
5040-1625
5062-3703
5041-8819
5041-8820
5041-8801
Description
output buss bar (2)
insulator for bus bar (4)
standoff, 12mrn (buss bar) (2)
binding post, rear panel ground
insulated bushing (under A6) (2)
cover, top
cover, bottom
cover, internal (lettered)
cover, dc output
cover, ac input
strain relief (line cord)
strap handle (2)
handle retainer, front (2)
handle retainer, back (2)
foot (4)
6
Component Location and Circuit Diagrams
This chapter contains component location diagrams, schematics, and other drawings useful for maintenance of the power
supply. Included in this section are:
a.
b.
c.
Component location illustrations (Figures 6-1 through 6-9), showing the physical location and reference designators of
almost all electrical parts. (Components located on the rear panel are easily identified.)
Notes (Table 6-1) that apply to all schematic diagrams.
Schematic diagrams (Figures 6-10 through 6-13).
AC line voltage is present on the A1 Main Board Assembly whenever the power cord is connected to an ac
power source.
Table 6-1. Schematic Diagram Notes
1.
2.
.
denotes front-panel marking.
denotes rear-panel marking.
3.
Complete reference designator consists of component reference designator prefixed with assembly number (e.g.:
A2R14).
4.
Resistor values are in ohms. Unless otherwise noted, resistors are either 1/4W, 5% or 1/8W, 1%. Parts list provides
power rating and tolerance for all resistors.
5.
Unless otherwise noted, capacitor values are in microfarads.
6.
Square p.c. pads indicate one of the following:
a. pin 1 of an integrated circuit.
b. the cathode of a diode or emitter of a transistor.
c. the positive end of a polarized capacitor.
7.
Schematic components marked with an asterisk (*) indicate that different values are used in each model. Refer to the
parts list for the applicable values.
8.
Schematic components marked with a dagger († ) are listed under chassis, electrical in the parts list.
9.
This capacitor is only used on 6030A and 6035A units. C6 is mounted on the chassis on 6030A units. C3 is mounted
on the A9 board on 6035A units.
10.
11.
indicates multiple paths represented by only one line. Reference designators with pin
numbers indicate destination, or signal names identify individual paths. Numbers
indicate number of paths represented by the line.
Inter-board commons have letter identifications (e.g.:
identifications (e.g.:
).
); commons existing on a single assembly have number
101
Table 6-1. Schematic Diagram Notes (continued)
For single in-line resistor packages, pin 1 is marked with a dot. For integrated circuit packages, pin 1 is either marked with
a dot, or pin 1 is to the left (as viewed from top) of indentation on the integrated circuit package (except for A8U6 and
A8U8).
102
Figure 6-1. Top View, Top Covers Removed
103
Figure 6-2A. 6030A/35A Main Board (A1) and Output Filter Component Location
104
Figure 6-2B. 6031A Main Board (A1) and Output Filter Component Location
105
Figure 6-2C. 6032A Main Board (A1) and Output Filter Component Location
106
Figure 6-3. Control Board (A2) Component Location
Figure 6-4. Front Panel Board (A3)
Component Location
107
Figure 6-5. FET Board (A4) Component Location
108
Figure 6-6A. 6030A/35A Diode Board (A5) Component Location
Figure 6-6B. 6031A Diode Board (A5) Component Location
109
Figure 6-6C. 6032A Diode Board (A5) Component Location
Figure 6-7. AC Input Filter (A6) Component Location
110
Figure 6-8. GPIB Board (A8) Component Location
111
Figure 6-9. 6035A Output Board (A9) Component Location
112
Figure 6-13A. GPIB Board Schematic Diagram
Figure 6-13B. GPIB Board Schematic Diagram
A
l00 Vac Input Power Option 100
General Information
Description
Option 100 is a modification of Agilent 6030A/31A/32A/35A power supplies that involves changing resistors on the A2
board, recalibrating the supply, and changing the Front Panel. These changes allow the units to operate at a lower line
voltage of 87 to 106 Vac, while operating on the same line frequency of 48 to 63 Hz. The reduced input voltage limits the
output power to approximately 700 watts. Other specifications that change due to Option 100 include Programming
Response Time, Overvoltage Protection and Remote Analog Programming.
Scope of Appendix A
This appendix contains all the information necessary to support Agilent 6033A/31A/32A/35A power supplies that are
equipped with Option 100. The appendix describes only the changes pertaining to Option 100 and how they affect the other
portions of this manual. Unless otherwise specified in Appendix A, all other portions of the annual apply to both the
standard unit and the Option 100 unit.
Suggestions for Using Appendix A
The Option 100 changes are listed sequentially, starting with Chapter 1 in the main body of the manual and working back
through Chapter 6. It is recommended that the user mark all the necessary changes directly into his manual. This will update
the manual for Option 100 and eliminate the need for constant referrals back to Appendix A.
Chapter 1 Manual Changes
On Page 9, in Scope change the output power from 1000 to 700 watts.
Chapter 2 Manual Changes
On Page 17, in Constant Voltage Full Scale Calibration step b, and Voltage Monitor and Remote Readback Full Scale
Calibration step b, change the VSET values to:
VSET 170 (6030A)
VSET 50 (6032A)
VSET 425 (6035A)
119
On Page 17, in Voltage Monitor and Remote Readback Full Scale Calibration step d, change the A8R58 adjustment to:
170.025 ±6mV (6032A)
50.0075 ± 1.52mV (6032A)
425.063 ± 6µV (6035A)
On Page 17, in Voltage Monitor and Remote Readback Full Scale Calibration step c, change 5.000625V to:
4.250625V ± 100µV (6030A/35A)
4.167187V ± 100µV (6032A)
On Page 17, in Voltage Monitor and Remote Readback Full Scale Calibration step f, change the A8R61 adjustment to
between:
170.00 and 170.50Vdc (6030A)
50.00 and 50.025Vdc (6032A)
425.00 and 425.125Vdc (6035A)
On Page 20, in Power Limit Calibration step a, change 240 Vdc to 206 Vdc.
On Page 20, in Power Limit Calibration step b, change the load resistor as follows:
2.9 ohm 1500 W (6030A)
0.05 ohm 1500 W (6031A)
0.29 ohm 1500 W (6032A)
32 ohm 1500 W (6035A)
On Page 20, in Power Limit Calibration step e, change the VSET values to:
VSET 50 (6030A)
VSET 6 (6031A)
VSET 14.5 (6032A)
VSET 163 (6035A)
On Page 20, in Power Limit Calibration step f, change the output values to:
50 ± 1V (6030A)
6 ± 0.08V (6031A)
14.5 ± 0.1V (6032A)
163 ± 1V (6035A)
On Page 20, in Power Limit Calibration step g, change the current and resistor settings to:
32 ohm 1500W (6030A)
0.50 ohm 1500W (6031A)
2.8 ohm 1500W (6032A)
212 ohm 1500W (6035A)
On Page 20, in Power Limit Calibration step i, change the VSET or ISET values to:
VSET 170 (6030A)
ISET 40 (6031A)
VSET 50; ISET 18 (6032A)
VSET 425 (6035A)
On Page 21, in Power Limit Calibration step j, change the output values to:
170 ± 2V (6030A)
@40A (6031A)
50 ± 0.4V @17.5A (6032A)
425 ± 0.4V @2A (6035A)
120
On Page 21, in Electronic load, make the following resistor changes:
from 40 to 36 ohms (6030A)
from 0.4 to 0.57 ohms (6031A)
from 3.5 to 3 ohms (6032A)
from 250 to 300 ohms (6035A)
from 3.5 to 2.4 ohms (6030A)
from 0.069 to 0.043 ohms (6031A)
from 0.4 to 0.27 ohms (6032A)
from 40 to 30 ohms (6035A)
On Page 23, in Voltage Programming and Readback Accuracy step g, change the VSET values to:
VSET 170 (6030A)
VSET 50 (6032A)
VSET 425 (6035A)
On Page 23, in Voltage Programming and Readback Accuracy step h, change the range values to:
169.796 to 170.205Vdc (6030A)
49.9375 to 50.0525Vdc (6032A)
423.538 to 426.462Vdc (6035A)
On Page 23, in Voltage Programming and Readback Accuracy step i, change the values to:
± 0.216Vdc (6030A)
± 0.060Vdc (6032A)
± 2.325Vdc (6035A)
On Page 23, in Load Effect (Load Regulation) step c, change the output voltage to:
42Vdc (6030A)
5.2Vdc (6031A)
13.5Vdc (6032A)
150Vdc (6035A)
On Page 24, in Load Effect (Load Regulation) step h, change the values to:
0.009Vdc (6030A)
0.0035Vdc (6031A)
0.006Vdc (6032A)
0.028Vdc (6035A)
On Page 24, in Source Effect (Line Regulation) step d, change the output voltage to:
170Vdc (6030A)
50Vdc (6032A)
425Vdc (6035A)
On Page 25, in Source Effect (Line Regulation) step e, change the output current to:
4.7Adc (6030A)
35Adc (6032A)
16Adc (6035A)
1.38Adc (6035A)
On Page 25, in Source Effect (Line Regulation) step i, change the values to:
0.022Vdc (6030A)
0.008Vdc (6032A)
0.055Vdc (6035A)
121
On Pages 25-27, in RMS Measurement Procedure, Peak Measurement and Load Transient Recovery Time, change the
output voltage to
42Vdc (6030A)
5.2Vdc (6031A)
13.5Vdc (6032A)
150Vdc (6035A)
On Page 28 and 29, in paragraph Current Programming and Readback Accuracy steps c and g, change the VSET values to:
VSET 170 (6030A)
VSET 50 (6032A)
VSET 425 (6035A)
On Page 29, in Load Effect (Load Regulation) step c, change the output current to:
4.7Adc (6030A)
35Adc (6032A)
16Adc (6035A)
1.38Adc (6035A)
On Page 29, in Load Effect (Load Regulation) step cd change the output voltage to:
170Vdc (6030A)
50Vdc (6032A)
425Vdc (6035A)
On Page 30, in Source Effect (Line Regulation) step d, change the output current to:
17Adc (6030A)
120Adc (6032A)
50Adc (6035A)
5Adc (6035A)
On Page 30, in Source Effect (Line Regulation) step e, change the output voltage to:
42Vdc (6030A)
5.2Vdc (6031A)
13.5Vdc (6032A)
150Vdc (6035A)
On Page 30, in PARD Ripple and Noise, make the following resistor changes:
from 3.5 to 2.4 ohms (6030A)
from 0.069 to 0.043 ohms (6031A)
from 0.4 to 0.27 ohms (6032A)
from 40 to 30 ohms (6035A)
On Page 30, Initialization, change step 2 as follows:
2. Turn the power on, and depending on your unit's model number, send the following strings:
122
"EEINIT 6030"
"EEPROM 10,4,175.00"
''EEINIT 6031''
''EEPROM 10,4,17.5"
''EEINIT 6032"
"EEPROM 10,4,51.495"
"EEINIT 6035"
"EEPROM 10,4,437.50"
Chapter 3 Manual Changes:
On Page 45, in Readback Multiplexer (U20), change Node U20-9, Measurement from + 5V to:
+ 4.25V (6030A/31A/35A)
+ 4.167V (6032A)
On Page 53 in Main Troubleshooting and on Page 54 in Troubleshooting No-Out Failures step d, change 320Vdc to
250Vdc.
Chapter 4 Manual Changes:
On Page 74 In Power Mesh and Input Circuits, change 320Vdc to 250Vdc.
Chapter 5 and 6 Manual Changes
On Page 86, change the A2 board from:
06030-60022 to 06030-60026 (6030A)
06011-60022 to 06031-60026 (6031A)
06032-60022 to 06032-60026 (6032A)
06030-60028 to 06035-60020 (6035A)
On Page 91 and on the schematic diagram Figure 6-10, change R81 to:
1.82K, 1% 1/8W Agilent P/N 0757-0429 (6030A, 6035A only)
1.78K, 1% 1/8W Agilent P/N 0757-0278 (6032A only)
On Page 92 and on the schematic diagram Figure 6-10, change R92 to:
10K, 1% 1/8W Agilent P/N 0757-0442 (6030A, 6035A only)
34.8K, 1% 1/8W Agilent P/N 0757-0123 (6031A only)
11.5K, 1% 1/8W Agilent P/N 0698-5383 (6032A only)
On Page 94, add option 100 label (A2 board) 9320-5540.
On Page 102, change front panel from:
06030-00012 to 06030-00011 (6030A)
06031-00013 to 06031-00012 (6031A)
06032-00023 to 06032-00022 (6032A)
06035-00001 to 06035-00003 (6035A)
On Page 103, add line voltage label (rear panel) Agilent P/N 06032-81004.
123
B
Blank Front Panel Option 001
Introduction
This appendix describes the blank front panel option (Option 001) for the Agilent 6030A/31A/32A power supplies. Option
001 is designed for applications in which front panel operation and monitoring are unnecessary. It has no front-panel
controls and indicators except for the LINE switch and OVP ADJUST control found on the standard unit, and a pilot light
to indicate when ac input power is turned on. All other characteristics of the standard are retained.
Except for references to front-panel controls and indicators, most of the information in the manual applies to Option 001
units. No attempt has been made in this appendix to change every reference to front-panel controls and indicators. In
general, information in this appendix replaces only those procedures whose modification may not be obvious to the user.
When reading the manual, the user can usually skip over references to front-panel controls and indicators other than the
LINE switch and OVP ADJUST control.
Troubleshooting
The major difference between troubleshooting an Option 001 unit and a standard power supply is that the front panel is not
available to help you isolate the problem to a specific section in the power supply. If you know which section of the supply
is defective, simply go to that section in the troubleshooting procedure and troubleshoot as described in Chapter 3.
To help you isolate the problem to a specific area of the supply, use the flowchart provided in this section.
If you cannot isolate the problem using the flowchart, you could replace the blank front panel of your supply with a standard
front panel and then troubleshoot the unit. Part numbers for front panel assemblies are provided in Chapter 5.
Chapter 2 Manual Changes:
On Page 20 Power Limit Calibration, change step f to read: Connect a DVM to control board test connector A2J7 pin 16
(CC). Observe the DVM while adjusting A2R25 (POWER LIMIT) clockwise. Stop adjusting as soon as test point A2J7-16
goes from high to low.
Note:
You can also send an STS? query (or SCPI equivalent) in a looping program and monitor when the power
supply status changes to CC mode.
Under the Performance Tests section, any references to front panel control will have to be accomplished using GPIB
commands. Use the following guidelines:
1.
To set the voltage and current to specific values, use the VSET and ISET (or SCPI equivalent) commands.
2.
If the procedure says to check the CC or CV LED's, use an STS? query (or SCPI equivalent). A returned value of 1
indicates CV mode; a value of 2 indicates CC mode.
125
Chapter 3 Manual Changes:
Replace Figure 3-1 with the figure on the next page. SA Tables 3-5 through 3-7 do not apply to Option 001 units.
Chapter 5 and 6 Manual Changes:
On Page 94 under A3 Front Panel Board, the only part that applies to the Option 001 unit is R72, the OVP-adjust
potentiometer. Change R72 from 2100-1775 to 2100-4060.
On Page 102 under Chassis Electrical, add Neon Pilot Light, P/N 1450-0647. Also add OVP Cable (R72), P/N 0603260004. Under Chassis Mechanical, change screened front panel to:
06030-00010 (6030A)
06031-00011 (6031A)
06032-00021 (6032A)
On Figure 6-9, add the neon pilot light in series with R8, 33K, across pins 4 and 5 of transformer T3.
On Figure 6-12, the only part that applies to the Option 001 unit is R72, the OVP-adjust potentiometer.
126
Figure 3-1. Troubleshooting Isolation (option 001)
127
C
Agilent 6030A Test Record
Performance Test Record - Agilent 6030A POWER SUPPLY (Page 1 of 2)
Test Facility:
__________________________________________
__________________________________________
__________________________________________
__________________________________________
Report No.__________________________________________
Date_______________________________________________
Customer___________________________________________
Tested By___________________________________________
Model
Agilent 6030A
Serial No.__________________________________
Options ____________________________________
Firmware Revision ___________________________
Ambient Temperature _______________________________°C
Relative Humidity ___________________________________%
Nominal Line Frequency ____________________Hz (nominal)
Special Notes:
____________________________________________________________________________________________
____________________________________________________________________________________________
____________________________________________________________________________________________
____________________________________________________________________________________________
____________________________________________________________________________________________
____________________________________________________________________________________________
____________________________________________________________________________________________
____________________________________________________________________________________________
____________________________________________________________________________________________
Test Equipment Used
Description
1. AC Source
2. DC Voltmeter
3. RMS Voltmeter
4. Oscilloscope
5. Electronic Load
6. Current Probe
7. Current Shunt
_______________
_______________
_______________
_______________
_______________
Model No.
_______________
Agilent 3458A
Agilent 3400A
Agilent 54504A
Agilent 6050A and
Agilent 60503A
_______________
Guildline 9230/100
_______________
_______________
_______________
_______________
_______________
Trace No.
Cal. Due Date
_____________________________
_____________________________
_____________________________
_____________________________
_____________________________
_________________
_________________
_________________
_________________
_________________
_____________________________
_____________________________
_____________________________
_____________________________
_____________________________
_____________________________
_____________________________
_________________
_________________
_________________
_________________
_________________
_________________
_________________
129
Performance Test Record - Agilent 6030A POWER SUPPLY (Page 2 of 2)
MODEL Agilent 6030A
Page
No.
23
Test Description
Report No.______________
Minimum Spec.
Results
*
Constant Voltage Tests
Date_____________________
Maximum
Spec.
Measurement
Uncertainty
Voltage Programming
and Readback
Low Voltage (0.500V)
Front Panel Display
GPIB Readback
0.354
VOUT - 0.065
VOUT - 0.080
________V
________V
________V
0.645
VOUT + 0.065
VOUT + 0.080
7µV
7µV
7µV
High Voltage (200V)
Front Panel Display
GPIB Readback
199.785
VOUT - 0.72
VOUT - 0.24
________V
________V
________V
200.215
VOUT + 0.72
VOUT + 0.24
2.7mV
2.7mV
2.7mV
23
Load Effect (60.0V)
VOUT - 0.011
_______mV
VOUT + 0.011
40µV
24
Source Effect (200V)
VOUT - 0.011
_______mV
VOUT + 0.011
350µV
25
26
PARD (Ripple and Noise)
RMS
Peak-to-Peak
0
0
0
_______mV
_______mV
_______mV
0.022
0.050
0.150/2ms
3.3mV
1.5mV
18mV
27
Transient Recovery
(90% to 100% Full Load)
Constant Current Tests
28
Current Programming
and Readback
Low Current (0.50A)
Front Panel Display
GPIB Readback
________A
________A
________A
________A
________A
________A
________mA
0.525
IOUT + 0.017
IOUT + 0.017
17.059
IOUT + 0.081
IOUT + 0.076
IOUT + 0.010
220µA
220µA
220µA
7mA
7mA
7mA
2µA
29
Load Effect (5.0A)
0.475
IOUT - 0.017
IOUT - 0.017
16.941
IOUT - 0.081
IOUT - 0.076
IOUT - 0.010
29
Source Effect (17.0A)
IOUT - 0.006
________mA
IOUT + 0.006
15µA
30
PARD (Ripple and Noise)
0
________mA
0.015
2mA
High Current (17.0A)
Front Panel Display
GPIB Readback
130
D
Agilent 6031A Test Record
Performance Test Record - Agilent 6031A POWER SUPPLY (Page 1 of 2)
Test Facility:
__________________________________________
__________________________________________
__________________________________________
__________________________________________
Report No.__________________________________________
Date_______________________________________________
Customer___________________________________________
Tested By___________________________________________
Model
Agilent 6031A
Serial No.__________________________________
Options ____________________________________
Firmware Revision ___________________________
Ambient Temperature _______________________________°C
Relative Humidity ___________________________________%
Nominal Line Frequency ____________________Hz (nominal)
Special Notes:
____________________________________________________________________________________________
____________________________________________________________________________________________
____________________________________________________________________________________________
____________________________________________________________________________________________
____________________________________________________________________________________________
____________________________________________________________________________________________
____________________________________________________________________________________________
____________________________________________________________________________________________
Test Equipment Used
Description
1. AC Source
2. DC Voltmeter
3. RMS Voltmeter
4. Oscilloscope
5. Electronic Load
6. Current Probe
7. Current Shunt
_______________
_______________
_______________
_______________
_______________
Model No.
_______________
Agilent 3458A
Agilent 3400A
Agilent 54504A
Agilent 6050A and
Agilent 60504A
_______________
Guildline 9230/300
_______________
_______________
_______________
_______________
_______________
Trace No.
Cal. Due Date
_____________________________
_____________________________
_____________________________
_____________________________
_____________________________
_________________
_________________
_________________
_________________
_________________
_____________________________
_____________________________
_____________________________
_____________________________
_____________________________
_____________________________
_____________________________
_________________
_________________
_________________
_________________
_________________
_________________
_________________
131
Performance Test Record - Agilent 6031A POWER SUPPLY (Page 2 of 2)
MODEL Agilent 6031A
Page
No.
23
Test Description
Report No.______________
Minimum Spec.
Results
*
Constant Voltage Tests
Date_____________________
Maximum
Spec.
Measurement
Uncertainty
Voltage Programming
and Readback
Low Voltage (0.10V)
Front Panel Display
GPIB Readback
0.085
VOUT - 0.007
VOUT - 0.007
________V
________V
________V
0.115
VOUT + 0.007
VOUT + 0.007
3µV
3µV
3µV
High Voltage (20.0V)
Front Panel Display
GPIB Readback
19.978
VOUT - 0.028
VOUT - 0.023
________V
________V
________V
20.022
VOUT + 0.028
VOUT + 0.023
335µV
335µV
335µV
23
Load Effect (7.0V)
VOUT - 0.0037
_______mV
VOUT + 0.0037
1µV
24
Source Effect (20.0V)
VOUT - 0.004
_______mV
VOUT + 0.004
20µV
25
26
PARD (Ripple and Noise)
RMS
Peak-to-Peak
0
0
0
_______mV
_______mV
_______mV
0.008
0.050
0.100/2ms
1.2mV
1.5mV
12mV
27
Transient Recovery
(90% to 100% Full Load)
28
Current Programming
and Readback
Constant Current Tests
Low Current (0.50A)
Front Panel Display
GPIB Readback
________A
________A
________A
________A
________A
________A
________mA
0.751
IOUT + 0.303
IOUT + 0.102
120.550
IOUT + 1.140
IOUT + 0.580
IOUT + 0.020
220µA
220µA
220µA
50mA
50mA
50mA
25µA
29
Load Effect (50.0A)
0.248
IOUT - 0.303
IOUT - 0.102
119.450
IOUT - 1.140
IOUT - 0.580
IOUT - 0.020
29
Source Effect (120A)
IOUT - 0.037
________mA
IOUT + 0.037
136mA
30
PARD (Ripple and Noise)
0
________mA
0.120
18mA
High Current (120A)
Front Panel Display
GPIB Readback
132
E
Agilent 6032A Test Record
Performance Test Record - Agilent 6032A POWER SUPPLY (Page 1 of 2)
Test Facility:
__________________________________________
__________________________________________
__________________________________________
__________________________________________
Report No.__________________________________________
Date_______________________________________________
Customer___________________________________________
Tested By___________________________________________
Model
Agilent 6032A
Serial No.__________________________________
Options ____________________________________
Firmware Revision ___________________________
Ambient Temperature _______________________________°C
Relative Humidity ___________________________________%
Nominal Line Frequency ____________________Hz (nominal)
Special Notes:
____________________________________________________________________________________________
____________________________________________________________________________________________
____________________________________________________________________________________________
____________________________________________________________________________________________
____________________________________________________________________________________________
____________________________________________________________________________________________
____________________________________________________________________________________________
____________________________________________________________________________________________
Test Equipment Used
Description
1. AC Source
2. DC Voltmeter
3. RMS Voltmeter
4. Oscilloscope
5. Electronic Load
6. Current Probe
7. Current Shunt
_______________
_______________
_______________
_______________
_______________
Model No.
_______________
Agilent 3458A
Agilent 3400A
Agilent 54504A
Agilent 6050A and
Agilent 60504A
_______________
Guildline 9230/100
_______________
_______________
_______________
_______________
_______________
Trace No.
Cal. Due Date
_____________________________
_____________________________
_____________________________
_____________________________
_____________________________
_________________
_________________
_________________
_________________
________________
_____________________________
_____________________________
_____________________________
_____________________________
_____________________________
_____________________________
_____________________________
_________________
_________________
_________________
_________________
_________________
_________________
_________________
133
Performance Test Record - Agilent 6032A POWER SUPPLY (Page 2 of 2)
MODEL Agilent 6032A
Page
No.
Test Description
Report No.______________
Minimum Spec.
Results
*
Date_____________________
Maximum
Spec.
Measurement
Uncertainty
Constant Voltage Tests
23
Voltage Programming
and Readback
Low Voltage (0.090V)
Front Panel Display
GPIB Readback
0.050
VOUT - 0.020
VOUT - 0.020
________V
________V
________V
0.130
VOUT + 0.020
VOUT + 0.020
3µV
3µV
3µV
High Voltage (60.0V)
Front Panel Display
GPIB Readback
59.939
VOUT - 0.118
VOUT - 0.068
________V
________V
________V
60.061
VOUT + 0.118
VOUT + 0.068
845µV
845µV
845µV
23
Load Effect (20.0V)
VOUT - 0.007
_______mV
VOUT + 0.007
20µV
24
Source Effect (60.0V)
VOUT - 0.009
_______mV
VOUT + 0.009
40µV
25
26
PARD (Ripple and Noise)
RMS
Peak-to-Peak
0
0
0
_______mV
_______mV
_______mV
0.006
0.040
0.100/2ms
900µV
1.2mV
12mV
27
Transient Recovery
(90% to 100% Full Load)
Constant Current Tests
28
Current Programming
and Readback
Low Current (0.50A)
Front Panel Display
GPIB Readback
________A
________A
________A
________A
________A
________A
________mA
0.586
IOUT + 0.041
IOUT + 0.036
50.185
IOUT + 0.270
IOUT + 0.215
IOUT + 0.011
220µA
220µA
220µA
20mA
20mA
20mA
15µA
29
Load Effect (16.5A)
0.414
IOUT - 0.041
IOUT - 0.036
49.815
IOUT - 0.270
IOUT - 0.215
IOUT - 0.011
29
Source Effect (50.0A)
IOUT - 0.015
________mA
IOUT + 0.015
25µA
30
PARD (Ripple and Noise)
0
________mA
0.025
3.7A
High Current (50.0A)
Front Panel Display
GPIB Readback
134
F
Agilent 6035A Test Record
Performance Test Record - Agilent 6035A POWER SUPPLY (Page 1 of 2)
Test Facility:
__________________________________________
__________________________________________
__________________________________________
__________________________________________
Report No.__________________________________________
Date_______________________________________________
Customer___________________________________________
Tested By___________________________________________
Model
Agilent 6035A
Serial No.__________________________________
Options ____________________________________
Firmware Revision ___________________________
Ambient Temperature _______________________________°C
Relative Humidity ___________________________________%
Nominal Line Frequency ____________________Hz (nominal)
Special Notes:
____________________________________________________________________________________________
____________________________________________________________________________________________
____________________________________________________________________________________________
____________________________________________________________________________________________
____________________________________________________________________________________________
____________________________________________________________________________________________
____________________________________________________________________________________________
____________________________________________________________________________________________
Test Equipment Used
Description
1. AC Source
2. DC Voltmeter
3. RMS Voltmeter
4. Oscilloscope
5. Electronic Load
6. Current Probe
7. Current Shunt
8. Power Resistor
_______________
_______________
_______________
Model No.
_______________
Agilent 3458A
Agilent 3400A
Agilent 54504A
Agilent 6050A and
Agilent 60503A
_______________
Guildline 9230/15
250 ohms 1%
1KW (min.)
_______________
_______________
_______________
Trace No.
Cal. Due Date
_____________________________
_____________________________
_____________________________
_____________________________
_____________________________
_________________
_________________
_________________
_________________
_________________
_____________________________
_____________________________
_____________________________
_____________________________
_____________________________
_____________________________
_____________________________
_________________
_________________
_________________
_________________
_________________
_________________
_________________
135
Performance Test Record - Agilent 6035A POWER SUPPLY (Page 2 of 2)
MODEL Agilent 6035A
Page
No.
23
Test Description
Report No.______________
Minimum Spec.
Results
*
Constant Voltage Tests
Date_____________________
Maximum
Spec.
Measurement
Uncertainty
Voltage Programming
and Readback
Low Voltage (1.00V)
Front Panel Display
GPIB Readback
0.598
VOUT - 0.300
VOUT - 0.205
________V
________V
________V
1.400
VOUT + 0.300
VOUT + 0.205
12µV
12µV
12µV
High Voltage (500V)
Front Panel Display
GPIB Readback
498.350
VOUT - 3.500
VOUT - 2.700
________V
________V
________V
501.650
VOUT + 3.500
VOUT + 2.700
6.5mV
6.5mV
6.5mV
23
Load Effect (200V)
VOUT - 0.060
_______mV
VOUT + 0.060
350µV
24
Source Effect (500V)
VOUT - 0.063
_______mV
VOUT + 0.063
800µV
25
26
PARD (Ripple and Noise)
RMS
Peak-to-Peak
0
0
0
_______mV
_______mV
_______mV
0.050
0.160
0.200/5ms
7.5mV
4.8mV
24mV
27
Transient Recovery
(90% to 100% Full Load)
Constant Current Tests
28
Current Programming
and Readback
Low Current (0.10A)
Front Panel Display
GPIB Readback
________A
________A
________A
________A
________A
________A
________mA
0.185
IOUT + 0.060
IOUT + 0.050
5.100
IOUT + 0.085
IOUT + 0.075
IOUT + 0.034
56µA
56µA
56µA
2mA
2mA
2mA
2µA
29
Load Effect (2.0A)
0.015
IOUT - 0.060
IOUT - 0.050
4.900
IOUT - 0.085
IOUT - 0.075
IOUT - 0.034
29
Source Effect (5.0A)
IOUT - 0.018
________mA
IOUT + 0.018
2µA
30
PARD (Ripple and Noise)
0
________mA
0.050
5mA
High Current (5.0A)
Front Panel Display
GPIB Readback
136
G
Manual Backdating
This section describes changes that must be made to the manual so that it applies to instruments with serial numbers lower
than those listed on the title page. Look in the following table for the serial number of your instrument, and make only those
changes listed for your instrument. Note that for some changes you may be instructed to update the instrument if certain
components are being replaced during repair.
__________________________________________
__________________________________________
| Prefix | Serial Number | Make Changes
|
| Prefix | Serial Number | Make Changes
|
|
6030A
|
|
6032A
|
| 2934A | 01825-01829 | 1-7, 9, 10, 12, 14-18
|
| 3004A | 05881-05885 | 1, 3-7, 9-12, 14, 17, 18 |
| 3023A | 01925-02408 | 1-7, 9, 10, 12, 14-18
|
| 3023A | 06181-07180 | 1, 3-7, 9-12, 14, 17, 18 |
| 3123A | 02409-02538 | 1-7, 9, 10, 12, 14-18
|
| 3123A | 07181-07480 | 1, 3-7, 9-12, 14, 17, 18 |
| 3137A | 02539-02568 | 1-7, 9, 10, 12, 14-17
|
| 3138A | 07481-07880 | 1, 3-7, 9-12, 14, 17
|
| 3141A | 02569-02748 | 1-7, 9, 10, 12, 14-16
|
| 3211A | 07881-08020 | 1, 3-7, 9-12, 14, 17
|
| 3211A | 02749-02778 | 1-7, 9, 10, 12, 14-16
|
| 3221A | 08021-08200 | 1, 3-7, 9-12, 14
|
| 3215A | 02779-02808 | 1-7, 9, 10, 12, 14, 15
|
| 3232A | 08201-08480 | 1, 3-7, 9-12, 14
|
| 3220A | 02809-03068 | 1-7, 9, 10, 12, 14
|
| 3250A | 08481-08560 | 1, 3-7, 9-12
|
| 3251A | 03069-03108 | 1-7, 9, 10, 12
|
| 3304A | 08561-08780 | 1, 3-7, 9-11
|
| 3305A | 03109-03308 | 1-7, 9, 10
|
| 3319A | 08781-08820 | 1, 3-7, 9, 10
|
| 3332A | 03309-03568 | 1-7, 9
|
| 3304A | 08821-08860 | 1, 3-7, 9, 10
|
| 3415A | 03569-03648 | 1-7
|
| 3319A | 08861-08980 | 1, 3-7, 9, 10
|
| 3430A | 03649-03708 | 1-6
|
| 3323A | 08981-09580 | 1, 3-7, 9
|
| 3441A | 03709-03818 | 1-5
|
| 3415A | 09581-09900 | 1, 3-7
|
| 3506A | 03819-04088 | 1-4
|
| 3431A | 09901-10140 | 1, 3-6
|
| 3544A | 04089-04478 | 1-3
|
| 3440A | 10141-10580 | 1, 3-5
|
| 3702A | 04479-04848 | 1, 2
|
| 3510A | 10581-11160 | 1, 3-4
|
| US3702 | 0101-0260 | 1, 2
|
| 3542A | 11161-13020 | 1, 3
|
| US3832 | 0261-0300 | 1
|
| US3542 | 0101-0880
| 1, 3
|
|
|
|
|
| US3832 | 0881-1025
| 1
|
|
|
|
|
|
|
|
|
|
6031A
|
|
6035A
|
| 2934A | 01821-01825 | 1, 3-7, 9-12, 14, 16,17,18|
| 3038A | 00101-00177 | 1-10, 12-18
|
| 3026A | 01921-02280 | 1, 3-7, 9-12, 14, 16,17,18|
| 3124A | 00178-00217 | 1-10, 12-18
|
| 3121A | 02281-02410 | 1, 3-7, 9-12, 14, 16,17,18|
| 3140A | 00218-00297 | 1-10, 12-16
|
| 3137A | 02411-02430 | 1, 3-7, 9-12, 14, 16, 17 |
| 3211A | 00298-00317 | 1-10, 12-15
|
| 3140A | 02431-02520 | 1, 3-7, 9-12, 14, 16
|
| 3224A | 00318-00347 | 1-10, 12-14
|
| 3213A | 02521-02560 | 1, 3-7, 9-12, 14, 16
|
| 3239A | 00348-00387 | 1-10, 12, 13
|
| 3221A | 02561-02650 | 1, 3-7, 9-12, 14
|
| 3251A | 00388-00417 | 1-10, 12
|
| 3302A | 02651-02690 | 1, 3-7, 9-12
|
| 3308A | 00418-00477 | 1-10
|
| 3304A | 02691-02700 | 1, 3-7, 9-11
|
| 3330A | 00478-00517 | 1-9
|
| 3313A | 02701-02760 | 1, 3-7, 9-10
|
| 3330A | 00518-00537 | 1-9
|
| 3325A | 02761-02920 | 1, 3-7, 9
|
| 3351A | 00538-00597 | 1-8
|
| 3416A | 02921-02990 | 1, 3-7
|
| 3418A | 00598-00637 | 1-7
|
| 3429A | 02991-03020 | 1, 3-6
|
| 3432A | 00638-00682 | 1-5
|
| 3440A | 03021-03110 | 1, 3-5
|
| 3512A | 00683-00862 | 1-4
|
| 3506A | 03111-03280 | 1, 3, 4
|
| 3542A | 00863-01112 | 1-3
|
| 3543A | 03281-03890 | 1, 3
|
| 3702A | 01113-01342 | 1,2
|
| US3543 | 0101-0340 | 1, 3
|
| US3702 | 0101-0250
| 1,2
|
| US3831 | 0341-0375 | 1
|
| US3832 | 0251-0280
| 1
|
137
CHANGE 1:
Under A1 Main Board, change R45 to 82.5k p/n 07570563.
CHANGE 8:
Under A1 Main Board, change K1, K2 to p/n 0490-1746.
Change R47 and R48 150 ohms p/n 0761-0035.
CHANGE 2:
Under A8 GPIB Board.
Add:
R100 p/n 0698-4037.
U17 p/n 1820-2549
Delete: C67-70 0.01uF 10%, p/n 0160-4832, qty 4.
C71,73 2200pF 10%, p/n 0160-4830, qty 2.
L1 choke, p/n 9170-1680.
L2-4 core-shield bead, p/n 9170-1454, qty 3.
:
Q1 transistor 2N4917, p/n 1853-0089.
R1 47.5K 1%, p/n 0757-0457.
R2,12 4.64K 1%, p/n 0698-3155, qty 2.
R79,80 0 ohm, p/n 8159-0005, qty 2.
U117 IC-9914 talker/listener, p/n 1821-1740.
Change: A8, GPIB board to p/n 5060-3551.
C14 to 0.047uF, p/n 0160-5422.
C23 to 39uF, p/n 0180-0393.
C61 to p/n 0160-4281.
U6 to p/n 5080-2160.
U36 to p/n 5080-2158.
CHANGE 9:
Under A2 Control Board,
*********** For Model 6035A only ***********
Change R40 to 95k p/n 0699-1211 and 1.21M p/n 06991271. Change R41 to 200k p/n 0698-6376.
CHANGE 3:
Under A5 Diode Board, change CR4 and CR5 for model
6030A to p/n 1901-1182. Change CR4 and CR5 for
model 6035A to p/n 1901-1316. Change Q1 for model
6030A to p/n 1855-0486 and for model 6035A to p/n
1855-0802. Under A5 Mechanical, change heatsink
(CR5) for models 6030A,35A to p/n 06030-00003.
Change heatsink (CR4, Q1) for models 6030A,35A to
p/n 06030-00004.
CHANGE 4:
Under A4 FET Board, change CR1 and CR4 to p/n
1901-1137. Both diodes must be the same part number.
CHANGE 5:
Under A8 GPIB Board, change U33 to p/n 1820-0430.
CHANGE 6:
Under A8 GPIB Board, change U14 to p/n 1820-6721.
CHANGE 7:
Under A8 GPIB Board:
Add:
U15, p/n 1LH4-0001.
Delete: U115, SN75ALS61610, p/n 1820-6045.
U116, SN75ALS6160, p/n 1820-6170.
C142 100pF, p/n 0160-4801.
C143-144 .047uF, p/n 0160-5422.
Change: A8, GPIB board to p/n 5060-3305.
138
CHANGE 10:
Under A3 Front Panel, change G1 to p/n 06032-60005.
On page 5-18 under Chassis Mechanical, change Knob to
p/n 0370-1303. Delete Spacer, p/n 2190-0736.
CHANGE 11:
Under A1 Main Board,
Add:
C3, C7, 1400uF p/n 0180-3460
R6, 1.3k, p/n 0811-1803
U2, U4, rectifier, p/n 1906-0006
Delete: C27, 34, cap 0.01uF 400V, p/n 0160-6805
CR6-13, power rectifier 400V, p/n 1901-0731
R24, res 200 5% 1/2W, p/n 0686-2015
R43, 44, res 2.61k 1% 1/8W, p/n 0698-0085
R45, res 82.5k 1% 1/8W, p/n 0757-0463
R46, res 681 1% 1/8W, p/n 0757-0419
R47, 48, res 150 5% 1W p/n 0761-0035
R49, res 100 1% 1/8W, p/n 0757-0401
Q2, FET N-channel, p/n 1855-0665
VR1, diode zener 7.5V 5%, p/n 1902-0955
U6, opto-isolator, p/n 1990-1074
Change: A1 (6030A) to p/n 06030-60021
A1 (6031A) to p/n 06011-60021
A1 (6032A) to p/n 06032-60021
A1 (6035A) to p/n 06030-60027
C1,2,4-6,8 to 1400uF p/n 0180-3460
C10 to 22uF p/n 0180-3696
CR1 to 1901-0028
DS1 to display, p/n 1990-0325
K1 to relay p/n 0490-1457
K2 to relay p/n 0490-1341.
R5 to 300, p/n 0686-3015
R7 to 10, p/n 0686-1005
R8 to 33k, p/n 0686-3335
R41 to 30, p/n 0811-1869
Under A6 AC Input Filter, change the part number of the
board to 06011-60025 for models 6030A,31A,32A, and
06011-60028 for model 6035A.
Under Chassis Electrical at the end of the parts list,
change L4 to p/n 06011-80093.
CHANGE 12:
Under A1 Main Board,
*********** For Model 6031A only ***********
Change C23 and C28 to .047uF Agilent p/n 01605895.
Add C21 and C24, .047uF Agilent p/n 0160-5895.
Add R21 and R22, 1 ohm p/n 0699-0208.
*********** For Model 6032A only ***********
Change C20 and C22 to .047uF Agilent p/n 01605895.
Add C21 and C23, .047uF Agilent p/n 0160-5895.
Add R20 and R23, 1 ohm p/n 0699-0208.
CHANGE 13:
Under A8 GPIB Board, change U8 to p/n 1818-4111.
CHANGE 14:
Under A1 Main Board, change C11,12 to 0.047uF, p/n
0160-5895. On page 5-3, change R12 and R13 to 2.2
ohms, p/n 0699-0188.
CHANGE 15:
Under A8 GPIB Board, delete D22.
CHANGE 16:
Under A5 Diode Board, delete L3.
CHANGE 17:
Under A1 Main Board, change U1 to p/n 1906-0218.
CHANGE 18:
Under A6 AC Input Filter, change L1 to p/n 0601180094.
139
Manual Updates
The following updates have been made to this manual since the print revision indicated on the title page.
4/07/04
Pages 38, 104, 105, 106 and 107 have been corrected.