Agilent Technologies Ventilation Hood 6610XA User Manual

SERVICE GUIDE

for Agilent 6610xA

Power Modules

Serial Numbers:

Agilent Model 66101A: US34440101 and up

Agilent Model 66102A: US34210101 and up

Agilent Model 66103A: US34210101 and up

Agilent Model 66104A: US34450101 and up

Agilent Model 66105A: US34210101 and up

Agilent Model 66106A: US34210101 and up

For instruments with higher serial numbers,

a change page may be included.

For instruments with lower serial numbers,

refer to Appendix A.

Agilent Part No. 5959-3364

Printed in USA

Microfiche Part No. 5959-3365

Update: June, 2000

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SAFETY SUMMARY

The following general safety precautions must be observed during all phases of operation of this power module.

Failure to comply with these precautions or with specific warnings elsewhere in this guide violates safety

standards of design, manufacture, and intended use of the power module. Agilent Technologies assumes no

liability for the user’s failure to comply with these requirements.

GROUND THE POWER MODULE.

When installed in a properly wired mainframe, this product is a Safety Class 1 instrument (provided with a protective earth

terminal). To minimize shock hazard, the mainframe must be connected to an electrical ground. The mainframe must be

connected to the ac power supply mains through a three-conductor power cable, with the third wire firmly connected to an

electrical ground (safety ground) at the power outlet. 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.

DO NOT EXCEED INPUT RATINGS.

The mainframe is equipped with a power line filter to reduce electromagnetic interference and must be connected to a

properly grounded receptacle to minimize electric shock hazard. Operation at line voltages or frequencies in excess of those

stated on the line rating label may cause leakage currents in excess of 5.0 mA peak.

DO NOT OPERATE IN AN EXPLOSIVE ATMOSPHERE.

Do not operate the power module in the presence of flammable gases or fumes.

BEFORE APPLYING POWER.

Verify that the power module line voltage switch is set to match the available line voltage.

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.

Power modules that appear damaged or defective should be made inoperative and secured against unintended operation

until they can be repaired by qualified service personnel.

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Printing History

The current edition of this guide is indicated below. Reprints of this guide containing minor corrections and updates may

have the same printing date. New editions are identified by a new printing date and, in some cases, by a new part number.

A new edition incorporates all new or corrected material since the previous edition. Changes to the guide occurring

between editions are covered by change sheets shipped with this guide. Also, if the serial number prefix of your power

module is higher than those listed on the title page of this guide, then it may or may not include a change sheet. That is

because even though the higher serial prefix indicates a design change, that change may not affect the content of the guide.

Edition 1 . . . . October, 1993 (Agilent Model 6610xA)

Update . . . . . June, 2000

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 prior consent of Agilent Technologies The

information contained in this document is subject to change without notice.

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Table of Contents

Overview.................................................................................................................................................................................. 7

About This Manual............................................................................................................................................................... 7

Related Documents........................................................................................................................................................... 8

Revisions and Updates.......................................................................................................................................................... 8

Manual.............................................................................................................................................................................. 8

Firmware........................................................................................................................................................................... 8

Safety Considerations ........................................................................................................................................................... 9

Electrostatic Discharge ......................................................................................................................................................... 9

Service Tools and Equipment............................................................................................................................................... 9

Verification and Performance Tests.................................................................................................................................... 11

Operation Verification Tests............................................................................................................................................... 11

Performance Tests .............................................................................................................................................................. 11

Measurement Techniques ............................................................................................................................................... 12

Setup for Most Tests................................................................................................................................................... 12

Current-Monitoring Resistor....................................................................................................................................... 12

Programming .................................................................................................................................................................. 12

Constant Voltage (CV) Tests.......................................................................................................................................... 13

CV Setup..................................................................................................................................................................... 13

Voltage Programming/Readback Accuracy................................................................................................................ 13

CV Load Effect........................................................................................................................................................... 13

CV Source Effect........................................................................................................................................................ 14

CV Noise (PARD)...................................................................................................................................................... 14

Transient Recovery Time............................................................................................................................................ 14

Constant Current (CC) Tests........................................................................................................................................... 15

CC Setup..................................................................................................................................................................... 15

Current Programming/Readback Accuracy................................................................................................................. 15

CC Load and Line Regulation .................................................................................................................................... 15

CC Load Effect........................................................................................................................................................... 16

CC Source Effect ........................................................................................................................................................ 16

CC Noise (PARD) ...................................................................................................................................................... 17

Troubleshooting.................................................................................................................................................................... 25

Troubleshooting Sequence.................................................................................................................................................. 25

Accessing the Flowcharts.................................................................................................................................................... 25

If You Experienced a Selftest Failure or RunTime Error Message................................................................................. 26

If You Experienced Other Problems With the Module................................................................................................... 26

Test Points .......................................................................................................................................................................... 48

Built-In Test Functions....................................................................................................................................................... 48

EEPROM Troubleshooting and Initialization..................................................................................................................... 51

Troubleshooting.............................................................................................................................................................. 51

Initialization.................................................................................................................................................................... 51

Disassembly Procedures ..................................................................................................................................................... 56

Removing the Module and Module Connector............................................................................................................... 56

Removing the Cover ....................................................................................................................................................... 56

Removing the Fan........................................................................................................................................................... 56

Removing the Front Panel Assembly.............................................................................................................................. 57

Removing the Power Board............................................................................................................................................ 57

Removing the Bias Board............................................................................................................................................... 57

Removing the Front Panel Board.................................................................................................................................... 57

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Installing the Power Board ............................................................................................................................................. 58

Installing the Bias Board ................................................................................................................................................ 58

Installing the Front Panel Board and Front Panel Assembly .......................................................................................... 59

Installing the Fan ............................................................................................................................................................ 59

Installing the Cover......................................................................................................................................................... 59

Theory of Operation............................................................................................................................................................. 61

AC Input and Bias Supplies................................................................................................................................................ 61

Microprocessor Circuits...................................................................................................................................................... 61

CV/CC DACs ..................................................................................................................................................................... 61

CV Amplifier...................................................................................................................................................................... 63

CC Amplifier ...................................................................................................................................................................... 63

OR Gates ............................................................................................................................................................................ 63

Pulse-Width Modulator, FETS, and Isolation Transformer................................................................................................ 64

Downprogrammer Circuit................................................................................................................................................... 64

Readback Multiplexer......................................................................................................................................................... 64

OV Circuit .......................................................................................................................................................................... 65

Replacement Parts................................................................................................................................................................ 67

Diagrams ............................................................................................................................................................................... 83

Schematic Sheets ................................................................................................................................................................ 83

Component Location Diagrams .......................................................................................................................................... 83

Schematic Notes ................................................................................................................................................................. 84

Manual Backdating ............................................................................................................................................................ 97

Index .................................................................................................................................................................................... 99

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Overview

About This Manual

This manual is a complete guide for servicing the Agilent 6610xA Power Modules. Troubleshooting information for the

Agilent 66000A MPS Mainframe is provided in the mainframe service manual (see "Related Documents"), which should be

used with this manual.

Note

Troubleshooting the Agilent 6610xA Power Modules requires the use of one working Agilent 66000A

MPS Mainframe.

This manual is organized into the following major sections:

■ Overview discusses safety and equipment considerations to be aware of when troubleshooting. It also lists the tools and

equipment required for troubleshooting.

■ Verification and Performance consists of a series of tests that are used to verify....

■ Troubleshooting procedures systematically verify selected circuits to isolate the cause of a problem. Suggestions for

remedying the problem are also provided. The following troubleshooting procedures are provided:

❏

Overall

Microprocessor

Error Messages

Overvoltage Circuit

Output Circuit

CV and CC Circuits

Downprogrammer Circuits

DAC Circuit

Readback Circuit

Disassembly procedures are provided at the end of the chapter.

■ Theory of Operation provides a brief description of the overall operation of the power module.

■ Replacement Parts lists part numbers for electrical components and miscellaneous chassis parts.

■ Schematics and component location diagrams are provided as an aid in troubleshooting and repair.

Overview

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Related Documents

The following documents are related to this manual:

Manual

Part Number

Description

Agilent 66000A MPS Mainframe

Installation Guide

66000-90001

5959-3386

Provides product specifications, installation, and

connection information.

Agilent Series 6610xA MPS Power

Modules User’s Guide

Describes the operation of the MPS Power Modules.

Agilent Series 6610xA MPS Power

Modules Programming Guide

5959-3362

Describes SCPI programming commands, status

reporting.

Agilent Series 66000A MPS

Mainframe Service Manual

66000-90003

Provides replaceable-parts lists, circuit diagrams, and

verification procedures for the Agilent Series 66000A

MPS Mainframe.

Revisions and Updates

Manual

Agilent Technologies instruments are identified by a two-part, ten-character serial number, such as 3246A-00517. The first

five characters (e.g. 3246A) are the serial prefix, which is the same for all identically made instruments. The last five digits

(e.g. 00517) are a unique serial number assigned to each instrument. If a significant design change is made, the prefix

changes but the last five numbers continue in sequence.

This manual applies to Agilent 6610xA Power Modules with the same serial prefixes and serial numbers equal to or higher

than the ones shown on the title page. If the prefix number on your power module is higher than the one on the title page,

then the module was made after publication of the manual and may have hardware and/or firmware differences not covered

in the manual. If there are such differences, they are documented in one or more "Manual Changes" sheets sent with the

manual.

If the prefix number on your power module is lower than the one on the title page, then the module was made before the

publication of the manual and may have differences not covered in the manual. These differences are documented in

appendix A.

Firmware

This manual applies to power modules that run on software revision A.00.01 through A.00.04. Firmware revision A.00.04 is

backward compatible with all previous revisions. The ROM chip (U2) has a label that specifies the firmware revision.

Overview

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Safety Considerations

The Agilent 6610xA Power Modules are Safety Class 1 instruments that connect to a protective earth terminal when

properly installed in an Agilent 66000A MPS Mainframe. Refer to the Safety Summary page at the beginning of this manual

for general safety procedures and the meaning of safety symbols appearing in the manual and on the module.

Electrostatic Discharge

The Modular Power System has components that can be damaged by ESD (electrostatic discharge).

Failure to observe standard anti-static practices can result in serious degradation of performance even

when complete failure does not occur.

When working on the Modular Power System, observe all anti-static work practices. This includes, but is not limited to:

■ Working at a static-free station, such as a table covered with static-dissipative laminate or with a conductive table mat

(Agilent p/n 9300-0797).

■ Using a conductive wrist strap (Agilent p/n 9300-0969 or 9300-0970).

■ Grounding all metal equipment at the station to a single, common ground.

■ Connecting low-impedance test equipment to static sensitive components only when those components have power

applied to them.

■ Removing power from the Modular Power System before removing or installing printed circuit boards.

Service Tools and Equipment

The following tools are required to repair the Agilent 6610xA MPS Modules:

■ T10 TORX driver

■ 7mm HEX NUT drivers

■ #2 POZI driver

■ Slot-head screwdriver - medium

■ DIP component removal tool

■ Soldering iron and solder

■ De-solder removal tool

■ Needle-nose pliers

■ Anti-static work mat and wrist strap

Overview

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The following equipment is required to verify and troubleshoot the Agilent 6610xA Power Modules:

Table 1-1. Service Test Equipment

Equipment Required

GPIB Controller

Critical Specifications

Full GPIB capabilities

Recommended Model

HP Series 200/300 computer

Agilent 54504A

Use¹

Oscilloscope

Sensitivity: 1mV

Bandwidth Limit: 20MHz

Probe: 1:1 with RF tip

Rms Voltmeter

True RMS Bandwidth: 20MHz

Agilent 3400B

Sensitivity: 100µV

Digital Voltmeter

Resolution: 10nV @ 1V (8 1/2 digit)

Agilent 3458A Accuracy: 20 ppm

V,T

Variable Voltage

Transformer

Adjustable from- 13% to + 6% of input

range. 1KVA min.

CC RMS Noise

Resistor (R_M)

Guildline 9230/100

Guildline 9230/15

V,T

Agilent 66101A,102A - 100A (.01 Ω) ±

0.04%²

Agilent 66103A,106A - 15A (.01 Ω) ±

0.04%³

Electronic Load

Voltage and current range must exceed range Agilent 6050A Load mainframe

V,T

of module under test.

Power Range: 600W minimum

and Agilent 60503A module

(240V) or Agilent 60507A module

(120V).

Load Resistor (R_L)

Ohmite C300KR10

Ohmite C300KIR0

Agilent 66101A- 0.1 Ω ± 5% 300W

Agilent 66102A-106A- 1.0 Ω ± 5% 300W

MPS Mainframe

MPS Keyboard⁴

Agilent 66000A

Agilent 66001A

V,T

1 V = Verification; T = Troubleshooting.

2 Guildline Shunt Accuracy determined by Power Coefficient ( ± 0.01% + (0.0004%/watt))

3 Guildline Shunt Accuracy determined by Power Coefficient ( ± 0.01% + (0.002%/watt))

4 Use of the keyboard is recommended for displaying selftest error messages.

Overview

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Verification and Performance Tests

This chapter contains test procedures to check the operation of the Agilent 6610xA Power Modules. The required test

equipment is specified in Chapter 1. Sample performance test record sheets are included at the end of the chapter.

Instructions are given for performing the tests either from a GPIB controller or the MPS keyboard. Two types of procedures

are provided: Operation Verification tests and Performance tests.

Operation Verification

Performance

These tests do not check all parameters, but comprise a short procedure to verify that the

power module is performing properly.

These test all the Performance Specifications (not Supplementary Characteristics) listed in

Table 1-1 of the Power Module User’s Guide.

If you encounter failures or out-of-specification test results, see "Troubleshooting Procedures" in Chapter 3 of this manual.

Those procedures will determine if repair and/or calibration is required.

Note

The power module must pass the selftest at power-on before the following tests can be performed. If the

module fails selftest, refer to the overall troubleshooting procedures in Chapter 3.

SHOCK HAZARD The tests should only be performed by qualified personnel. During the performance of

these tests, hazardous voltages may be present at the output of the module.

Operation Verification Tests

To assure that the module is operating properly, without testing all specified parameters, perform the following test

procedures:

1. Perform the turn-on and checkout procedures given in Chapter 3 of the Power Module User’s Guide.

2. Perform the Voltage Programming/Readback Accuracy and the Current Programming/Readback Accuracy Performance

Tests in this chapter.

Performance Tests

The following paragraphs provide test procedures for verifying the module’s compliance with the specifications listed in

Table 1-1 of the Power Module User’s Guide. All of the performance test specifications are listed in the Performance Test

Records at the end of this chapter. You can record the actual measured values in the column provided.

Verification and Performance Tests 11

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Measurement Techniques

Setup for Most Tests

Most tests are performed at the rear terminals as shown in the following figure. Measure the dc voltage directly at the + S

and - S terminals. Set the connector sense switch for local sensing and use adequate wire gauge for load leads as described

in Chapter 2 of the Power Module User’s Guide.

Figure 2-1. Performance Test Setup

Many of the test procedures require the use of a variable load capable of dissipating the required power (see Table 1-1). If a

variable resistor is used, switches must be used to connect, disconnect, and short the load resistor. For most tests, an

electronic load can be used. The electronic load is considerably easier to use than load resistors but some may not be fast

enough to test transient recovery time and may be too noisy for the noise (PARD) tests. Fixed load resistors may be used in

place of a variable load, with minor changes to the test procedures in this chapter. Also, if computer controlled test setups

are used, the relatively slow (compared to computers and system voltmeters) settling time and slew rates of the power

module may have to be taken into account. WAIT statements can be used in the test program if the test system is faster than

the module.

Current-Monitoring Resistor

To eliminate output current measurement error caused by voltage drops in the leads and connections, connect the current

monitoring resistor between the output and the load as a four-terminal device (see R_Min Figure 2-1). Connect the current

monitoring leads inside the load lead connections directly at the monitoring points on the resistor element.

Programming

Table 2-1 lists the programming and current values for each module. You may program the module from the MPS Keyboard

or from a GPIB controller when performing the tests. The test procedures are written assuming that you know how to do

either or both. Complete instructions for remote and local programming are given in the module Power Module

Programming Guide and Power Module User’s Guide.

12 Verification and Performance Tests

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Table 2-1. Power Module Voltage and Current Values

Agilent

Model

Full-Scale

Voltage

Max. Prog.

Voltage

8.190V

20.475V

35.831V

61.425V

122.85V

204.75V

Full-Scale

Current

16A

Max. Prog.

Current

16.380A

7.678A

Max. Prog.

Overvoltage

10V

66101A

66102A

66103A

66104A

66105A

66106A

20V

35V

60V

120V

200V

7.5A

4.5A

2.5A

1.25A

0.75A

24V

42V

72V

144V

4.607A

2.559A

1.280A

0.768A

240V

Constant Voltage (CV) Tests

CV Setup

If more than one meter or a meter and an oscilloscope are used, connect each to the terminals by a separate pair of leads to

avoid mutual coupling effects. For constant voltage dc tests, connect only to + S and - S because the module regulates the

output voltage that appears between those terminals, not between the + and - output terminals. Use coaxial cable or shielded

2-wire cable to avoid noise pickup on the test leads.

Voltage Programming/Readback Accuracy

This test verifies that the voltage programming, readback, and front panel display functions are within specifications. Note

that the values read back over the GPIB should be identical to those displayed on the keyboard display.

1. Turn off the power module and connect a digital voltmeter between the + S and--S terminals (see Figure 2-1).

2. Turn on the module and program it for zero volts and the maximum programmable current (see Table 2-1) with the load

off.

3. Record the output voltage readings on the DVM and the keyboard display. The readings should be within the limits

specified in the Performance Test Record Tables under CV PROGRAMMING @ 0 VOLTS, for the particular model

being tested. The CV annunciator should be on and the output current reading should be approximately zero.

4. Program the output voltage to full scale (see Table 2-1).

5. Record the output voltage readings on the DVM and the keyboard display. The readings should be within the limits

specified in the Performance Test Record Tables under CV PROGRAMMING @ FULL SCALE, for the particular

model being tested.

CV Load Effect

This test measures the change in output voltage resulting from a change in output current from full-load to no-load.

1. Turn off the module and connect the output as shown in Figure 2-1 with the DVM connected between the + S and - S

terminals.

2. Turn on the module and program the current to the maximum programmable value and the voltage to the full-scale

value (see Table 2-1).

3. Adjust the load for the full-scale current (see Table 2-1) as indicated on the keyboard display. The front panel CV

annunciator must be on. If it is not, adjust the load so that the output current drops slightly until the annunciator comes

on.

4. Record the output voltage reading on the DVM connected to + S and - S.

5. Open the load and again record the DVM voltage reading.

6. The difference between the DVM readings in steps (4) and (5) is the load effect voltage and should not exceed the

value listed in the Performance Test Record Tables under CV LOAD EFFECT, for the model being tested.

Verification and Performance Tests 13

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CV Source Effect

This test measures the change in output voltage that results from a change in ac line voltage from the minimum to maximum

value within the line voltage specifications.

1. Turn off the module and connect the ac power line through a variable-voltage transformer.

2. Connect the output as shown in Figure 2-1 with the DVM connected between the + S and - S terminals. Set the

transformer to nominal line voltage (either 115Vac or 230Vac).

3. Turn on the module and program the current to the maximum programmable value and the output voltage to the

full-scale value (see Table 2-1).

4. Adjust the load for the full-scale current value (see Table 2-1) as indicated on the keyboard display. The front panel CV

annunciator must be on. If it is not, adjust the load so that the output current drops slightly until the annunciator comes

on.

5. Adjust the transformer to the LOW line voltage (e.g., 87Vac for a 115Vac nominal input, or 174Vac for a 230Vac

nominal input).

6. Record the output voltage reading on the DVM.

7. Adjust the transformer to the HIGH line voltage (e.g., 132Vac for a 115Vac nominal input, or 250Vac for a 230Vac

nominal input).

8. Record the output voltage reading on the DVM.

9. The difference between the DVM readings in steps (6) and (8) is the source effect voltage and should not exceed the

value listed in the Performance Test Record Tables under CV SOURCE EFFECT, for the model being tested.

CV Noise (PARD)

Periodic and random deviations (PARD) in the output (ripple and noise) combine to produce a residual ac voltage

superimposed on the dc output voltage. This test measures CV PARD, specified as the rms or peak-to-peak output voltage

over the frequency range of 20Hz to 20MHz.

1. Turn off the module and connect the output as shown in Figure 2-1 to an oscilloscope (ac coupled) between the + and--

terminals. Set the oscilloscope’s bandwidth limit to 20MHz (30MHz on the Agilent 54504A) and use an RF tip on the

oscilloscope probe.

2. Turn on the module and program the current to the maximum programmable value and the output voltage to the

full-scale value (see Table 2-1).

3. Adjust the load for the full-scale current value (see Table 2-1) as indicated on the keyboard display.

4. The waveform on the oscilloscope should not exceed the peak-to-peak limits in the Performance Test Record Tables

under CV NOISE (PARD), for the model being tested.

5. Disconnect the oscilloscope and connect an ac rms voltmeter in its place. The rms voltage reading should not exceed

the rms limits in the Performance Test Record Tables under CV NOISE (PARD) for the model being tested.

Transient Recovery Time

This test measures the time for the output voltage to recover to within the specified value following a 10% change in the

load current.

1. Turn off the module and connect the output as shown in Figure 2-1 with the oscilloscope across the + S and -S

terminals.

2. Turn on the module and program the output voltage to the full-scale value and the current to the maximum

programmable value (see Table 2-1).

3. Set the load to the Constant Current mode and program the load current to 90% of the power module full-scale rated

current.

4. Set the electronic load’s transient generator frequency to 100Hz and its duty cycle to 50%.

5. Program the load’s transient level to the module’s full-scale current value and turn the transient on.

6. Adjust the oscilloscope for a waveform similar to that in Figure 2-2.

7. The output voltage should return to within 100mV of the nominal value in less than 1ms. Check both loading and

14 Verification and Performance Tests

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unloading transients by triggering on the positive and negative slope.

Figure 2-2. Transient Response Waveform

Constant Current (CC) Tests

CC Setup

Follow the general setup instructions in the Measurement Techniques paragraph and the specific instructions given in the

following paragraphs.

Current Programming/Readback Accuracy

This test verifies that the current programming and readback are within specification. The accuracy of the current

monitoring resistor is determined by the power coefficient (see Table 1-1).

1. Turn off the module and connect the current monitoring resistor directly across the output and a DVM across the

resistor. Refer to the "Current Monitoring Resistor" paragraph.

2. Turn on the module and program the output voltage to 5V and the current to zero.

3. Divide the voltage drop (DVM reading) across the current monitoring resistor by its resistance to convert to amps and

record this value as (Io). The actual current (Io) and the reading on the keyboard display should be within the limits

specified in the Performance Test Record Tables under CC PROGRAMMING @ 0 AMPS, for the particular model

being tested.

4. Program the output voltage to 5V and the current to full-scale (see Table 2-1).

5. Divide the voltage drop (DVM reading) across the current monitoring resistor by its resistance to convert to amps and

record this value as (Io). The actual current (Io) and the reading on the keyboard display should be within the limits

specified in the Performance Test Record Tables under CC PROGRAMMING @ FULL SCALE, for the particular

model being tested.

CC Load and Line Regulation

These tests (CC Load Effect and CC Source Effect given below) are tests of the dc regulation of the power module’s output

current. To insure that the values read are not the instantaneous measurement of the ac peaks of the output current ripple,

several dc measurements should be made and the average of these readings calculated.

Verification and Performance Tests 15

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The following steps show how to set up an Agilent 3458A System Voltmeter from its front panel to take a statistical average

of 100 readings. represents the unlabeled shift key in the FUNCTION/RANGE group.

1. Program 10 power line cycles per sample by pressing

2. Program 100 samples per trigger by pressing

3. Set up the voltmeter to take measurements in the statistical mode as follows:

4. a. Press

b. Press

until the MATH function is selected; then press

c. Press

until the STAT function is selected; then press

5. Now set up the voltmeter to read the average value of the measurements as follows:

6. a. Press

b. Press

until the RMATH function is selected; then press

until the MEAN function is selected; then press

c. Press

7. Execute the average reading program by pressing

8. Wait for 100 readings and then read the average measurement by pressing

To repeat the measurement, perform steps (7) and (8).

CC Load Effect

. Record this as your result.

This test measures the change in output current for a change in the load from full-scale output voltage to short circuit.

1. Turn off the module and connect the output to be tested as shown in Figure 2-1 with the voltmeter connected across the

current monitoring resistor.

2. Turn on the module and program the current to the full-scale current value and the output voltage to the maximum

programmable voltage value (see Table 2-1).

3. Adjust the load in the CV mode for full-scale voltage as indicated on the keyboard display. Check that the CC

annunciator is on. If it is not, adjust the load to drop the output voltage slightly until the annunciator comes on.

4. Record the output current reading (DVM reading ÷ current monitor resistance value in ohms).

Note

You may want to use the average reading program described previously.

5. Short the load switch and record the output current reading.

6. The difference in the current readings in steps (4) and (5) is the load effect and should not exceed the limit specified in

the Performance Test Record Tables under CC LOAD EFFECT, for the particular model being tested.

CC Source Effect

This test measures the change in output current that results when the ac line voltage changes from the minimum to the

maximum value within the specifications.

1. Turn off the module and connect the ac power line through a variable-voltage transformer.

2. Connect the output terminals as shown in Figure 2-1 with the voltmeter connected across the current monitoring

resistor. Set the transformer to the nominal line voltage.

3. Turn on the module and program the current to the full-scale value and the output voltage to the maximum

programmable value (see Table 2-1).

4. Adjust the load in the CV mode for full-scale voltage as indicated on the front panel display. Check that the CC

annunciator is on. If it is not, adjust the load to drop the output voltage slightly until the annunciator comes on.

5. Adjust the transformer to the LOW line voltage (e.g., 87Vac for a 115Vac nominal input, or 174Vac for a 230Vac

nominal input).

6. Record the output current reading (DVM reading ÷ current monitoring resistor in ohms).

16 Verification and Performance Tests

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Note You may want to use the average reading program described previously.

7. Adjust the transformer to the HIGH line voltage (e.g., 132Vac for a 115Vac nominal input, or 250Vac for a 230Vac

nominal input), and record the output current reading.

8. The difference in the current readings in steps (6) and (7) is the CC source effect and should not exceed the values

listed in the Performance Test Record Tables under CC SOURCE EFFECT, for the particular model being tested.

CC Noise (PARD)

Periodic and random deviations (PARD) in the output (ripple and noise) combine to produce a residual ac current as well as

an ac voltage superimposed on the dc output. Constant current (CC) PARD is specified as the rms output current in a

frequency range 20Hz to 20MHz with the module in CC operation.

1. Turn off the module and connect the load resistor (R_L) and rms voltmeter as shown in Figure 2-1. Use only a resistive

load for this test. Keep leads as short as possible to reduce noise pickup.

2. Check the test setup for noise with the module turned off. Other equipment (e.g. computers, DMM, etc.) may affect the

reading.

3. Turn on the module and program the current to full-scale and the output voltage to the maximum programmable value

(see Table 2-1).

4. The output current should be at the full-scale rating with the CC Mode on.

5. Divide the reading on the rms voltmeter by the shunt resistance to obtain rms current. It should not exceed the values

listed in the Performance Test Record Tables under CC NOISE (Rms) for the particular unit being tested.

Verification and Performance Tests 17

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Table 2-2. Performance Test Record for Model Agilent 66101A (8V, 16A)

Pre Cal_____________Post Cal______________

Temperature___________________________Test Performed

Model Agilent 66101A

By_______________________

Serial Number_______________________Humidity________________________Date__________________________

Test Description

Specification

Measurement

Uncertainty

Actual

CV PROGRAMMING @ 0 volts

Output Accuracy (DVM Reading)

Display and Readback Accuracy

________

0 ± 3mV

DVM ± 2mV

1.5µV

CV PROGRAMMING @ full-scale

Output Accuracy (DVM Reading)

Display and Readback Accuracy

________

8V ± 5.4mV

DVM ± 3.6mV

88µV

CV LOAD EFFECT

1mV

________

1µV

CV SOURCE EFFECT

0.5mV

CV NOISE (PARD)

Peak to Peak

Rms

5mV

2mV

0.87mV

150µV

________

TRANSIENT RECOVERY in 1 ms

100mV

15mV

________

CC PROGRAMMING @ 0 amps

Output Accuracy (Io)

Display and Readback Accuracy

________

0 ± 6mA

Io ± 6mA

150µA

CC PROGRAMMING @ full-scale

Output Accuracy (Io)

Display and Readback Accuracy

2.1mA

________

16A ± 10.8mA

Io ± 9.2mA

CC LOAD EFFECT

CC SOURCE EFFECT

CC NOISE (RMS)

0.5mA

0.75mA

8mA

________

15µA

0.9mA

18 Verification and Performance Tests

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Table 2-3. Performance Test Record for Model Agilent 66102A (20V, 7.5A)

Pre Cal_____________Post Cal______________

Temperature___________________________Test Performed

Model Agilent 66102A

By______________________

Serial Number_______________________Humidity________________________Date__________________________

Test Description

Specification

Measurement

Uncertainty

Actual

CV PROGRAMMING @ 0 volts

Output Accuracy (DVM Reading)

Display and Readback Accuracy

________

0 ± 8mV

DVM ± 3mV

1.6µV

CV PROGRAMMING @ full-scale

Output Accuracy (DVM Reading)

Display and Readback Accuracy

________

20V ± 14mV

DVM ± 7mV

335µV

CV LOAD EFFECT

1mV

________

20µV

CV SOURCE EFFECT

0.5mV

CV NOISE (PARD)

Peak to Peak

Rms

7mV

3mV

0.872mV

500µV

________

TRANSIENT RECOVERY in 1 ms

100mV

15mV

________

CC PROGRAMMING @ 0 amps

Output Accuracy (Io)

Display and Readback Accuracy

________

0 ± 3mA

Io ± 3mA

150µA

CC PROGRAMMING @ full-scale

Output Accuracy (Io)

Display and Readback Accuracy

1mA

________

7.5A ± 5.3mA

Io ± 4.5mA

CC LOAD EFFECT

CC SOURCE EFFECT

CC NOISE (RMS)

0.2mA

0.5mA

4mA

________

9µA

0.7mA

Verification and Performance Tests 19

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Table 2-4. Performance Test Record for Model Agilent 66103A (35V, 4.5A)

Pre Cal_____________Post Cal______________

Temperature___________________________Test Performed

Model Agilent 66103A

By______________________

Serial Number_______________________Humidity________________________Date__________________________

Test Description

Specification

Measurement

Uncertainty

Actual

CV PROGRAMMING @ 0 volts

Output Accuracy (DVM Reading)

Display and Readback Accuracy

________

0 ± 13mV

DVM ± 8mV

1.7µV

CV PROGRAMMING @ full-scale

Output Accuracy (DVM Reading)

Display and Readback Accuracy

________

35V ± 23.5mV

DVM ± 15mV

526µV

CV LOAD EFFECT

1mV

________

28µV

CV SOURCE EFFECT

CV NOISE (PARD)

Peak to Peak

Rms

10mV

5mV

0.90mV

500µV

________

TRANSIENT RECOVERY in 1 ms

100mV

15mV

________

CC PROGRAMMING @ 0 amps

Output Accuracy (Io)

Display and Readback Accuracy

________

0 ± 2mA

Io ± 2mA

15µA

CC PROGRAMMING @ full-scale

Output Accuracy (Io)

Display and Readback Accuracy

0.7mA

________

4.5A ± 3.4mA

Io ± 2.9mA

CC LOAD EFFECT

CC SOURCE EFFECT

CC NOISE (RMS)

0.2mA

0.3mA

2mA

________

3µA

250µA

20 Verification and Performance Tests

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Table 2-5. Performance Test Record for Model Agilent 66104A (60V, 2.5A)

Pre Cal_____________Post Cal______________

Temperature___________________________Test Performed

Model Agilent 66104A

By______________________

Serial Number_______________________Humidity________________________Date__________________________

Test Description

Specification

Measurement

Uncertainty

Actual

CV PROGRAMMING @ 0 volts

Output Accuracy (DVM Reading)

Display and Readback Accuracy

________

0 ± 27mV

DVM ± 16mV

1.8µV

CV PROGRAMMING @ full-scale

Output Accuracy (DVM Reading)

Display and Readback Accuracy

________

60V ± 45mV

DVM ± 28mV

845µV

CV LOAD EFFECT

2mV

________

40µV

CV SOURCE EFFECT

CV NOISE (PARD)

Peak to Peak

Rms

15mV

9mV

1.0mV

1.5mV

________

TRANSIENT RECOVERY in 1 ms

100mV

15mV

________

CC PROGRAMMING @ 0 amps

Output Accuracy (Io)

Display and Readback Accuracy

________

0 ± 0.6mA

Io ± 0.6mA

15µA

CC PROGRAMMING @ full-scale

Output Accuracy (Io)

Display and Readback Accuracy

________

2.5A ± 1.4mA

Io ± 1.1mA

323µA

CC LOAD EFFECT

CC SOURCE EFFECT

CC NOISE (RMS)

0.1mA

1mA

________

2µA

0.2mA

1 18mV Rms when the ac input is between 87 and 104Vac.

Verification and Performance Tests 21

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Table 2-6. Performance Test Record for Model Agilent 66105A (120V, 1.25 A)

Pre Cal_____________Post Cal______________

Temperature___________________________Test Performed

Model Agilent 66105A

By______________________

Serial Number_______________________Humidity________________________Date__________________________

Test Description

Specification

Measurement

Uncertainty

Actual

CV PROGRAMMING @ 0 volts

Output Accuracy (DVM Reading)

Display and Readback Accuracy

________

0 ± 54mV

DVM ± 32mV

2.1µV

CV PROGRAMMING @ full-scale

Output Accuracy (DVM Reading)

Display and Readback Accuracy

1.7mV

________

120V ± 90mV

DVM ± 56mV

CV LOAD EFFECT

4mV

3mV

________

230µV

CV SOURCE EFFECT

CV NOISE (PARD)

Peak to Peak

Rms

25mV

18mV

1.0mV

1.5mV

________

TRANSIENT RECOVERY in 1 ms

100mV

15mV

________

CC PROGRAMMING @ 0 amps

Output Accuracy (Io)

Display and Readback Accuracy

________

0 ± 0.6mA

Io ± 0.6mA

15µA

CC PROGRAMMING @ full-scale

Output Accuracy (Io)

Display and Readback Accuracy

________

1.25A ± 975µA

Io ± 850µA

157µA

CC LOAD EFFECT

CC SOURCE EFFECT

CC NOISE (RMS)

________

50µA

1mA

1.4µA

0.2mA

22 Verification and Performance Tests

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Table 2-7. Performance Test Record for Model Agilent 66106A (200V, 0.75A)

Pre Cal_____________Post Cal______________

Temperature___________________________Test Performed

Model Agilent 66106A

By______________________

Serial Number_______________________Humidity________________________Date__________________________

Test Description

Specification

Measurement

Uncertainty

Actual

CV PROGRAMMING @ 0 volts

Output Accuracy (DVM Reading)

Display and Readback Accuracy

________

0 ± 90mV

DVM ± 54mV

2.6µV

CV PROGRAMMING @ full-scale

Output Accuracy (DVM Reading)

Display and Readback Accuracy

2.7mV

________

200V ± 150mV

DVM ± 94mV

CV LOAD EFFECT

7mV

5mV

________

350µV

CV SOURCE EFFECT

CV NOISE (PARD)

Peak to Peak

Rms

50mV

30mV

1.5mV

5.0mV

________

TRANSIENT RECOVERY in 1 ms

100mV

15mV

________

CC PROGRAMMING @ 0 amps

Output Accuracy (Io)

Display and Readback Accuracy

________

0 ± 0.4mA

Io ± 0.3mA

15µA

CC PROGRAMMING @ full-scale

Output Accuracy (Io)

Display and Readback Accuracy

________

0.75A ± 625µA

Io ± 450µA

100µA

CC LOAD EFFECT

CC SOURCE EFFECT

CC NOISE (RMS)

________

10µA

30µA

1mA

1µA

0.2mA

Verification and Performance Tests 23

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Troubleshooting

This chapter provides troubleshooting and repair information for the Agilent 6610xA Power Modules. Before attempting to

troubleshoot the modules, ensure that the problem is not with an external circuit or application, the mainframe, the GPIB

controller, the application program, or the input power line.

SHOCK HAZARD Most of the troubleshooting procedures given in this chapter are performed with power

applied and protective covers removed. Such maintenance should be performed only by trained

service personnel who are aware of the hazards (for example, tire and electrical shock).

Hazardous voltages are present throughout the Power and Bias board assemblies. Ac line voltage is present

on some connectors even when the module is not turned on. The dc rail voltage to the module is 310 volts

when the unit is turned on.

Troubleshooting Sequence

1. Verify that the module is at fault.

2. Use the flowcharts to locate the functional block at fault.

3. Troubleshoot the functional block per flowchart instructions.

Selftest routines built into firmware are provided to help isolate a problem to a particular circuit on the board. Once a

problem has been isolated to a circuit, suggestions are given in the appropriate flowchart as to what component may be at

fault.

This instrument uses components that can be damaged or suffer serious performance degradation as a

result of ESD (electrostatic discharge). Observe the standard anti-static precautions discussed in

Chapter 1 to avoid damage to components.

Accessing the Flowcharts

The following troubleshooting flowcharts are provided to help you identify and isolate a problem to a specific circuit. Once

a problem has been narrowed down, suggestions are provided as to the components that may be responsible for the problem.

Refer to the schematic diagrams for detailed information on circuit wiring and component function.

Figure 3-1 - Overall Troubleshooting

Figure 3-2 - Troubleshooting Microprocessor Circuits

Figure 3-3 - Troubleshooting Error Messages

Figure 3-4 - Troubleshooting Overvoltage at Turn-on

Troubleshooting 25

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Figure 3-5 - Troubleshooting No Output

Figure 3-6 - Troubleshooting High Output

Figure 3-7 - Troubleshooting Will Not Overvoltage

Figure 3-8 - Troubleshooting CV Accuracy

Figure 3-9 - Troubleshooting CC Accuracy

Figure 3-10 - Troubleshooting Downprogrammer

Figure 3-11 - Troubleshooting DAC Circuit

Figure 3-12 - Troubleshooting Readback Circuits

Oscilloscope waveforms are provided on some flowcharts along with the settings required to generate the waveforms.

Connect the module to ac mains through an isolation transformer when making measurements with an

oscilloscope or any equipment that has the measuring input grounded.

If You Experienced a Selftest Failure or RunTime Error Message

If you experienced a selftest failure or runtime error message as described in Chapter 3 of the Power Module User’s Guide,

disassemble the module and proceed directly to the flowchart in Figure 3-3 "Troubleshooting Error Messages".

If You Experienced Other Problems With the Module

If you experienced problems other than a selftest failure or a runtime error message, disassemble the module and proceed

directly to Figure 3-1 "Overall Troubleshooting".

26 Troubleshooting

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Figure 3-1. Overall Troubleshooting (Sheet 1 of 3)

Troubleshooting 27

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Figure 3-1. Overall Troubleshooting (Sheet 2 of 3)

28 Troubleshooting

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Figure 3-1. Overall Troubleshooting (Sheet 3 of 3)

Troubleshooting 29

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Figure 3-2. Troubleshooting Microprocessor Circuits (Sheet 1 of 2)

30 Troubleshooting

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Figure 3-2. Troubleshooting Microprocessor Circuits (Sheet 2 of 2)

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Figure 3-3. Troubleshooting Error Messages

32 Troubleshooting

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Figure 3-4. Troubleshooting Overvoltage at Turn-On (Sheet 1 of 2)

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Figure 3-4. Troubleshooting Overvoltage at Turn-On (Sheet 2 of 2)

34 Troubleshooting

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Figure 3-5. Troubleshooting No Output (Sheet 1 of 5)

Troubleshooting 35

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Figure 3-5. Troubleshooting No Output (Sheet 2 of 5)

36 Troubleshooting

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Figure 3-5. Troubleshooting No Output (Sheet 3 of 5)

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Figure 3-5. Troubleshooting No Output (Sheet 4 of 5)

38 Troubleshooting

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Figure 3-5. Troubleshooting No Output (Sheet 5 of 5)

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Figure 3-6. Troubleshooting High Output

40 Troubleshooting

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Figure 3-7. Troubleshooting Will Not Overvoltage

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Figure 3-8. Troubleshooting CV Accuracy

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Figure 3-9. Troubleshooting CC Accuracy

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Figure 3-10. Troubleshooting Downprogrammer

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Figure 3-11. Troubleshooting DAC Circuit

Troubleshooting 45

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Figure 3-12. Troubleshooting Readback Circuits (Sheet 1 of 2)

46 Troubleshooting

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Figure 3-12. Troubleshooting Readback Circuits (Sheet 2 of 2)

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Test Points

The following test points are referenced in the troubleshooting flowcharts. Refer to the component locations diagram in

Chapter 6 for the actual location of the test points on the pc board.

Table 3-1. Test Points

Test Point

TP 0

Description

Output circuit common (located on inboard side of R303)

+5V (4.8 to 5.2 volts)

TP 1

TP 2

+12V (11.4 to 12.6 volts)

TP 3

+7V (6.7 to 7.3 volts)

TP 4

+2.5V (2.4 to 2.6 volts)

TP 5

-12V (-11.4 to -12.6 volts)

TP 6

TP 7

TP 8

TP 9

+15V (14.25 to 15.75 volts, referenced to the-rail)^l

+5V (4.75 to 5.25 volts, referenced to frame common)

+24V (24.3 to 27.3 volts, referenced to frame common)

+28V (unregulated, referenced to frame common)

TP 10

Frame common \F /

TP 11

TP 12

TP 13

TP 14

TP 15

TP 16

TP 17

TP 18

TP 19

TP 20

TP 21

TP 22

PCLR* (goes low for 175ms at turn-on)

6MHz (microprocessor clock out)

3MHz (A/D clock in)

+ output

-output

0 to-6V (CVPROG)

0 to-6V (CCPROG)

0 to 2V (A/D INPUT)

0 to 2V (VMON)

0 to 2V (IMON)

0 to 4V (OVREF)

-3.4 to -4V (OR GATE, output dependent)

1 Test Equipment must be isolated from ground.

Built-In Test Functions

To aid in troubleshooting, the module configuration switch (S3) can be set to run various test routines as described in the

Overall Troubleshooting flowchart. To start the test, set all switches to 0 (down) and turn on ac power. Then set the switch

to perform the selected test as shown in the following table.

48 Troubleshooting

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Table 3-2. S3 Test Settings

Test Description

S3 Setting

8 7 6 5 4 3 2 1

0 0 0 0 0 0 0 0

0 0 0 1 0 0 0 0

0 0 0 0 0 0 0 1

0 0 0 1 0 0 0 1

0 0 0 0 0 0 1 0

0 0 0 1 0 0 1 0

0 0 0 0 0 0 1 1

0 0 0 1 0 0 1 1

0 0 0 0 0 1 0 0

0 0 0 1 0 1 0 0

0 0 0 0 0 1 0 1

0 0 0 1 0 1 0 1

0 0 0 0 0 1 1 0

0 0 0 1 0 1 1 1

0 0 0 0 1 0 0 0

0 0 0 0 1 0 0 1

0 0 0 1 1 0 0 1

0 0 0 0 1 0 1 0

0 0 0 0 1 0 1 1

0 0 0 0 1 1 0 0

0 0 0 0 1 1 0 1

0 0 0 0 1 1 1 0

Start with blank front panel

Front panel with all segments on

VDAC minimum (TP16 = 0V)

VDAC maximum (TP16 = -VREF)

IDAC minimum (TP17 = 0V)

IDAC maximum (TP17 = -VREF)

OVPDAC minimum (TP21 = 0V)

OVPDAC maximum (TP21 = 4V)

VDAC ramp slow (TP16, see waveform B)

VDAC ramp fast (TP16, see waveform C)

IDAC ramp slow (TP17, see waveform B)

IDAC ramp fast (TP17, see waveform C)

OVPDAC ramp (TP21, see waveform A)

MUX/AD (Toggle S3 switch 5 to select input)

SRST* and OVPRST$ pulse

PWMENhigh

PWMEN low

DOCAL pulse

TRIGOUT (TOUT) pulse

EEPROM read (U22 pin 4)²

Relay sequence (toggle S3 switch 5 to select relay)³

Tx pulses

Tests multiplexer inputs. First measure voltage at Ul5 pin 4. Toggle S3 switch 5 until voltage at Ul5 pin 8 equals the

voltage at U15 pin 4. Now each time S3 switch 5 is toggled, the multiplexer will sequence through its inputs. The input

of the A/D (Ul2-9) will be equal to the output of the multiplexer. Because the A/D is continually reading, its output

(Ul2-20) should pulse.

Continuously reads the contents of location 0 of EEPROM. Check pulses at U22 pin 4.

Tests relays K601-K606. Toggling S3 switch 5 sequences through the relays. A relay is off when both ends of the coil

are at +12V. A relay is on when one end is pulled low. A particular relay will energize every 5th toggle on S3 switch 5.

Note that K607 is not tested.

Troubleshooting 49

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Figure 3-13. S3 Switch Setting Waveforms

50 Troubleshooting

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EEPROM Troubleshooting and Initialization

Troubleshooting

The power module can detect an EEPROM checksum error. This error is not identified by number, but causes the following

symptoms:

The power module starts up with both the VOLTS and AMPS full-scale programming and metering ranges accepting

values up to 1000.

Selftest error code 330 is stored in the SCPI error queue where it can be read by the controller (see Chapter 5 in the

Power Module Programming Guide).

The *IDN? query returns 0A in the model field.

The calibration password is set to 0.

An EEPROM checksum error can occur if there has been an excessive number of write cycles to an EEPROM. This

condition is not recoverable and requires a new EEPROM.

An EEPROM checksum error can also occur due to loss of ac power during a checksum calculation. This condition is very

unlikely, but may be recoverable by performing the following steps from the controller:

Enable calibration mode (CAL:STAT ON,0)

Save an operating state to EEPROM. (for example, *SAV 2)

Initialization

EEPROM U22 on the power board stores the module’s GPIB address, model number, and other operating and calibration

constants. The EEPROM was initialized with the proper constants at the factory. If you need to re-initialize the module with

the proper operating constants, run the following program.

After you have initialized the module by running the initialization program, you must calibrate the module as described in

Appendix A of the Power Module User’s Guide.

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Program to initialize EEPROM or move factory preset data in 66101A,

66102A, 66103A, 66104A, 66105A and 66106A power supply modules.

Rev A.00.00 dated May 27, 1993

DIM Init_data(1:39),Model$[6],Idn$[21],Cal_data$[40]

INTEGER Addr(1:39),Length(1:39)

ASSIGN @Ps TO 70500

! Supply must be at address 70500

CLEAR SCREEN

100 Eprom_data_addr:

! Data address

110

120

130

140

150

DATA 2,6,10,14,18,19,20,24,28,32

DATA 36,37,38,42,46,50,55,56,57,58

DATA 62,66,70,74,,110,l11,112,114,118,119

DATA l20,121,122,124,125,126,127,128,130

160 Eprom_data_len:

! Data for word length

! EEPROM data for 66101A

! EEPROM data for 66102A

170

180

190

200

210

DATA 4,4,4,4,1,1,4,4,4,4

DATA 1,1,4,4,4,4,1,1,1,4

DATA 4,4,4,4,1,1,2,4,1,1

DATA 1,1,2,1,1,1,1,1,2

220 Eprom_data_101a:

230

240

250

260

270

DATA 409,668,32.2818,8.19,0,66,0,221.586,33.0533,16.38,0

DATA 66,4,23.5,19,10,0,255,100,20,66101

DATA 3277.35,-1.74536,1772.04,-1.50366,0,0,4,66101,20,150

DATA 20,150,28321,40,20,10,83,83,0

280 Eprom_data_102a:

290

300

310

320

330

DATA 164.035,32.3969,20.475,0,66,0,440.367,30.0918,7.678,0

DATA 66,4,9,5.25,24.0,0,255,100,20,66102

DATA 1311.8,.248047,3523.12,-28.4202,0,0,4,66102,20,150

DATA 20,150,28321,40,20,10,83,83,0

340 Eprom_data_103a:

! EEPROM data for 66103A

! EEPROM data for 66104A

! EEPROM data for 66105A

350

360

370

380

390

DATA 93.7474,32.2944,35.831,0,66,0,735.971,26.127,4.607,0

DATA 66,4,4,.93986,5.50002,42,0,255,100,20,66103

DATA 749.745,-.725342,5885.92,-54.0496,0,0,4,66103,20,150

DATA 20,150,28321,40,20,10,83,83,0

400 Eprom_data_104a: !

410

420

430

440

450

DATA 54,32.3969,61.425,0,66,0,1320,30.0918,2.559,0

DATA 66,4,3,5.25,72.0,0,255,100,20,66104

DATA 437,.248047,10569,-28.4202,0,0,4,66104,20,150

DATA 20,150,28321,40,20,10,83,83,0

460 Eprom_data_105a: !

470

480

490

500

DATA 27,32.3969,122.85,0,65,0,2640,30.0918,1.28,0

DATA 66,4,1.5,5,5.25,144,0,255,100,20,66105

DATA 219,.248047,21000,-28.4202,0,0,4,66105,20,150

DATA 20,150,28321,40,20,10,82,83,0

Figure 3-14. EEPROM Initialization Program (Sheet 1 of 5)

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510

520 Eprom_data_106a: !

DATA 16.4035,32.3969,204.75,0,65,0,4403.67,30.0918,0.768,0

! EEPROM data for 66106A

530

540

550

560

570

580

590

600

610

620

630

640

650

660

670

680

690

700

710

720

730

740

750

760

770

780

790

800

810

820

830

840

850

860

870

880

890

900

910

920

930

940

950

960

970

980

990

1000

DATA 67,4,0.9,5.25,240,0,255,100,20,66106

DATA 131.18,.248047,35231.2,-28.4202,0,0,4,66106,20,150

DATA 20,150,28321,40,20,10,82,84,0

INPUT “Input Power Supply model number. Example:""66101A""",Model$

Model$=TRIM$(UPC$(MODEL$))

CLEAR SCREEN

PRINT "The Power Supply Module must be in slot 0. Press ""Continue"""

PRINT "to resume program."

PAUSE

CLEAR SCREEN

RESTORE Eprom_data_addr

FOR I=l T0 39

READ Addr(I)

NEXT I

RESTORE Eprom_data_len

FOR I=l T0 39

READ Length(I)

NEXT I

SELECT Model$

CASE "66101A"

RESTORE Eprom_data_101a

CASE "66102A"

RESTORE Eprom_data_102a

CASE "66103A"

RESTORE Eprom_data_103a

CASE "66104A"

RESTORE Eprom_data_104a

CASE "66105A"

RESTORE Eprom_data_105a

CASE "66106A"

RESTORE Eprom_data_106a

CASE ELSE

PRINT "Model number not found. Program is for Agilent models"

PRINT "66101A through 66106A ONLY"

STOP

END SELECT

FOR I=l T0 39

! Read model dependent data

READ Init_data(I)

Figure 3-14. EEPROM Initialization Program (Sheet 2 of 5)

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1010

1020

1030

1040

1050

1060

1070

1080

1090

1100

1110

1120

1130

1140

1150

1160

1170

1180

1190

1200

1210

1220

1230

1240

1250

1260

1270

1280

1290

1300

1310

1320

NEXT I

OUTPUT @Ps;"*CLS"

OUTPUT @Ps;"CAL;STATE ON,"

GOSUB Ps_error

IF Err THEN

! Clears power supply registers

! Turn on cal mode, "0" passcode

! Error if passcode is not "0"!

! Get data from model # location

OUTPUT @Ps;"*IDN?"

ENTER @Ps;Idn$

Model=VAL(Idn$[POS(Idn$,”,”)+1] )

ELSE

GOTO Start

END IF

OUTPUT @Ps;"CAL:STATE ON,";Model

! Turn on cal mode, passcode =

! data at model number location

GOSUB Ps_error

! Error if passcode is not same as

! data at model # location

IF Err THEN

OUTPUT @Ps;"CAL:STATE ON,";Model$[l,4]

! Turn on cal mode, passcode =

! model #

GOSUB Ps_error

IF Err THEN

PRINT "Change pass code to the power supply model # or zero. Restart program."

STOP

ELSE

GOTO Start

END IF

1330 Start:

1340

1350

1360

1370

1380

1390

1400

1410

1420

1430

1440

1450

1460

INPUT “Select Initialization (I) or Factory preset replacement (F).”,Sel$

CLEAR SCREEN

SELECT (UPC$(Sel$))

CASE "I"

GOTO Init_eeprom

CASE "F"

GOTO Fact_preset

CASE ELSE

BEEP

! Select Initialization

! Select install new factory data

GOTO Start

END SELECT

1470 Init_eeprom:

1480

1490

1500

PRINT “Initializing EEPROM”

FOR I=1 TO 39

Figure 3-14. EEPROM Initialization Program (Sheet 3 of 5)

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1510

1520

1530

1540

OUTPUT @Ps;"DIAG:EEPR ’’;Addr(I);’’,’’;Length(I);’’,’’;Init_data(I)

NEXT I

GOTO Cal_off

1550 Fact_preset:

1560

1570

1580

1590

1600

1610

1620

1630

1640

1650

1660

1670

CLEAR SCREEN

PRINT "This program should ONLY be completed if your power supply”

PRINT "EEPROM has been replaced or a component that will effect"

PRINT "the calibration AND the alignment of voltage, overvoltage"

PRINT "and current is complete AND unit has passed the performance"

PRINT "test.

INPUT Cont_prog$

IF (UPC$(Cont_prog$))< >"C" THEN GOTO Cal_off

CLEAR SCREEN

PRINT "Transferring calibration data to factory preset locations."

Enter C to continue, any other key to abort.”

1680 Fact_cal_sour:

! Address of factory calibration data source

1690

1700

DATA 2,6,62,66,20,24,70,74

1710 Fact_cal_dest

! Address of factory calibration data destination

1720

1730

DATA 78,82,86,90,94,98,102,106

1740 Fact_cal_len:

! Length of factory calibration data

1750

1760

1770

1780

1790

1800

1810

1820

1830

1840

1850

1860

1870

1880

1890

1900

1910

1920

DATA 4,4,4,4,4,4,4,4,

RESTORE Fact_cal_sour

FOR I=1 TO 8

READ Cal_sour_addr(I)

NEXT I

RESTORE Fact_cal_dest

FOR I=1 T0 8

READ Cal_dest_addr(I)

NEXT I

FOR I=1 T0 8

! Locations of good data

Read good data

! Enter good data

OUTPUT @Ps;"DIAG:EEPR? ";Cal_sour_addr(I);",";4

ENTER @Ps;Cal_data$

OUTPUT @Ps;"DIAG:EEPR";Cal_dest_addr(I);",";4;",";Cal_data$ ! Write data

NEXT I

1930 Cal_off

1940

1950

1960

1970

1980

1990

2000

CLEAR SCREEN

OUTPUT @Ps;"CaL:STATE OFF"

GOSUB Ps_error

IF Err THEN

! Turn off cal mode

! Check for errors

PRINT "An error occurred during the EEPROM read/write, Check for"

PRINT "programming errors. Initialization data may be incorrect."

Figure 3-14. EEPROM Initialization Program (Sheet 4 of 5)

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2010

2020

2030

2040

2050

2060

STOP

END IF

PRINT "Operation complete. Program stopped."

STOP

2070 Ps_error:

! Error handling subroutine

! Check for errors

2080

2090

2100

2110

2120

OUTPUT @Ps;"SYST:ERR?"

ENTER @Ps;Err

RETURN

END

Figure 3-14. EEPROM Initialization Program (Sheet 5 of 5)

Disassembly Procedures

This section describes how to disassemble and reassemble the Agilent 6610xA Power Modules. Refer to Chapter 5 for the

component descriptions. Refer to Chapter 1 for the tools required to disassemble and reassemble the unit.

Most of the attaching hardware is metric. Using the wrong fasteners will damage threaded inserts.

Observe all standard anti-static procedures when removing the pc boards from the chassis (see

Chapter 1).

Removing the Module and Module Connector

Before you can disassemble the module, you must first remove the power modules from the mainframe.

1. Use the slot-head screwdriver and release the pull tab at the front of each module.

2. Pull the power module out of the mainframe.

3. To remove the module connector, use the Pozi driver and disconnect the module connectors from the back of the

mainframe.

Removing the Cover

1. Use the T10 driver and remove the seven screws that connect the chassis cover to the chassis.

2. Lift the cover off.

Removing the Fan

1. Carefully unplug the fan cable from the J102 connector on the Power board.

2. Use the T10 driver and 7mm nut driver and remove the two screws that connect the fan to the fan bracket.

3. Remove the fan.

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Removing the Front Panel Assembly

1. Carefully unplug the front panel cable from the J3 connector on the Power board.

2. Spread the bottom of the chassis away from the front panel assembly and lift the assembly out of the chassis.

Removing the Power Board

1. Carefully unplug the front panel cable from the J3 connector, the bias board cables from the J301 and J302 connectors,

and the fan cable from the J102 connector on the Power board.

2. Use the T10 driver and remove the four screws (two toward the back and two near the center) that attach the Power

board to the chassis.

3. Lift up on the top edge of the Power board and carefully remove the board from the chassis.

Removing the Bias Board

Removing the Front Panel assembly first makes it easier to remove the Bias board.

1. Carefully unplug the bias board cables from the J401 and J402 connectors on the Bias board. If you have not already

done so, carefully unplug the front panel cable from the J3 connector on the Power board.

2. Use the T10 driver and remove the two screws at the front that attach the Bias board to the chassis.

3. Lift up on the front edge of the Bias board and carefully remove the board from the chassis.

Removing the Front Panel Board

You must first remove the Front Panel assembly before you can remove the Front Panel board.

1. Separate the two halves of the front panel assembly by releasing the four locking tabs with the flat-bladed screwdriver

(see figure 3-15).

2. Insert the screwdriver into the areas indicated on the figure and press against the tabs to release them.

3. Once separated, you can easily remove the front panel board from the front panel assembly.

4. You can also easily remove the latching mechanism once the front panel assembly is separated.

Troubleshooting 57

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Figure 3-15. Front Panel Assembly Locking Tabs

Installing the Power Board

1. Insert the tabs along the bottom edge of the board in the corresponding slots on the bottom of the chassis and carefully

install the board in the chassis.

2. Use the T10 driver and insert the four screws (two toward the back and two near the center) that attach the Power board

to the chassis.

3. Connect the front panel cable into the J3 connector, the bias board cables into the J301 and J302 connectors, and the

fan cable into the J102 connector on the Power board.

4. Insert the front panel cable and the bias board cables into the appropriate cable cutout on the fan bracket.

5. To prevent the cover from pinching the cables, route the front panel cable, the longer bias board cable, and the fan

cable between T201 and L201.

Installing the Bias Board

1. Carefully install the Bias board so that T401 is positioned up against the fan bracket.

2. Use the T10 driver and insert the two screws at the front that attach the Bias board to the chassis.

3. Connect the bias board cables into the J401 and J402 connectors on the Bias board.

4. Insert the bias board cables into the appropriate cable cutout on the fan bracket. Route the longer bias cable in between

T201 and L201.

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Installing the Front Panel Board and Front Panel Assembly

1. Install the front panel, the front panel board, and the latch assembly in one of the front assembly halves.

2. Make sure that the front panel board is positioned in the slot closest to the front panel.

3. Carefully snap the other half of the front panel assembly together.

4. Insert the tab on the top of the front panel assembly in the corresponding notch on the chassis and position the front

panel assembly into the chassis. The two tabs on the side of the assembly should be positioned in the corresponding

notches on the side of the chassis.

5. Connect the front panel cable into the J3 connector on the Power board. Route the cable through the cutout on the fan

bracket and in between T201 and L201.

Installing the Fan

1. Position the fan up against the fan bracket.

Make sure that the arrow on the fan is pointing to the BACK of the module. The airflow must be from

the front of the module to the back of the module.

2. Use the T10 driver and 7mm nut driver and insert the two screws and nuts that connect the fan to the fan bracket. Place

the locking nuts against the fan bracket.

3. Connect the fan cable into the J102 connector on the Power board. Route the cable in between T201 and L201.

Installing the Cover

1. Position the cover over the chassis so that the screw holes and the notches on the front panel assembly notches line up

with the corresponding openings in the cover. Make sure that no cables are being pinched by the cover.

2. Use the T10 driver and insert the seven screws that connect the chassis cover to the chassis

Troubleshooting 59

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Theory of Operation

This chapter provides a brief theory of operation for the Agilent 6610xA Power Modules. Figure 4-1 is a block diagram of

the primary circuit functions of the power modules. The diagram references the schematic sheets where the circuits are

located.

AC Input and Bias Supplies

AC input power is distributed to each module through the backplane connector board on the mainframe. A turn-on relay

inside the module applies ac power from the mainframe to the power module. This relay receives its bias power from the

mainframe and is opened and closed by a control signal from the mainframe.

The ac input is rectified and filtered in the power module, producing the + and - dc rail. In addition to the dc rail, the ac

input is also applied to a bias transformer, which provides the following bias voltages:

+ 15V (primary)

+ 5V (secondary)

± 12V (secondary)

Microprocessor Circuits

All communication between the modules and the controller or keyboard except for the trigger signals is processed by U44

on the mainframe. The primary function of this microprocessor is to distribute the digital signals from controller or

keyboard to the correct module slot in the mainframe.

Microprocessor Ul on the modules communicates with U44 through two data lines -a transmit and a receive line (Tx and

Rx). Associated with Ul is ROM chip U2, RAM chip U3, and EEPROM chip U22.

At turn-on, microprocessor Ul first transfers the calibration constants that are stored in the EEPROM chip of each module

into RAM. It then applies the calibration correction factors in RAM to the voltage or current setting information and

calculates a bit count that it sends to the DACs. The microprocessor directs the data either to the CV or the CC DAC. It is

able to send sixteen data bits to each DAC by first strobing in the upper byte, and then strobing in the lower byte.

CV/CC DACs

Upon receiving data from the microprocessor, the CC and CV DACS output the correct analog output voltage. Both the CC

and the CV DACs output an analog signal in the range of 0 to minus 6 volts (calibrated), which corresponds to the zero to

full-scale output range of the power module’s voltage and current. The DACs are referenced to a regulated 7V bias.

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Figure 4-1. Block Diagram

62 Thoery Of Operation

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CV Amplifier

The CV amplifier controls the output of the power module when the module is operating in constant voltage mode. The CV

amplifier consists of two stages: an error amplifier stage and a voltage monitor stage. The calibrated CVPROG* signal from

the CV DAC pulls current out of the negative input of the error amplifier at a rate determined by the DAC’s programmed

value. The error amplifier in turn, controls the output of the module.

The output of the module is monitored by the voltage monitor stage. It reduces the module’s output voltage so that the 0 to

full-scale output voltage of the module is represented by a range of 0 to 2 volts at the output of the voltage monitor

amplifier. The voltage monitor amplifier’s output (VMON) is fed through a resistor to develop a current. This current is fed

into the negative input of the error amplifier stage at the same time that current is being pulled out of this input by the

CVPROG* signal from the CV DAC.

When the current pulled out of the error amplifier input by the CV DAC exceeds the current fed into the input by the

voltage monitor, the error amplifier turns on, which turns the output of the module on. When the current pulled out of the

error amplifier input by the CV DAC is less than the current fed into the input by the voltage monitor, the error amplifier

turns off, which turns off the output of the module. When the current pulled out of the error amplifier input by the CV DAC

is equal to the current fed into the input by the voltage monitor, the net current into the error amplifier is zero. At this point,

there is no change on the output voltage of the power module because the output voltage equals the programmed voltage

value.

CC Amplifier

The CC amplifier controls the output of the power module when the module is operating in constant current mode. The CC

amplifier also consists of two stages: an error amplifier stage, and a current monitor stage. The calibrated CCPROG* signal

from the CC DAC pulls current out of the negative input of the error amplifier at a rate determined by the DAC’s

programmed value. The error amplifier in turn, controls the output of the module.

The current monitor stage monitors the current at the output of the module by sensing the voltage drop across current

monitor resistor (RM). The current monitor amplifies this voltage (which is typically in the range of 0 to 50mV) so that the

0 to full-scale current output of the module is represented by a range of 0 to 2 volts at the output of the current monitor

amplifier. The current monitor amplifier’s output (IMON) is fed through a resistor to develop a current. This current is fed

into the negative input of the error amplifier stage at the same time that current is being pulled out of this input by the

CCPROG* signal from the CC DAC.

When the current pulled out of the error amplifier input by the CC DAC exceeds the current fed into the input by the current

monitor, the error amplifier turns on, which turns on the output of the module. When the current pulled out of the error

amplifier input by the CC DAC is less than the current fed into the input by the current monitor, the error amplifier turns off,

which turns off the output of the module. When the current pulled out of the error amplifier input by the CC DAC is equal to

the current fed into the input by the current monitor, the net current into the error amplifier is zero. At this point, there is no

change on the output current of the power module because the output current equals the programmed current value.

OR Gates

The outputs of the CV and CC amplifiers are "or"ed through two diodes, producing a single pulse-width modulator control

signal (VCNTRL). Whichever of the two signals (CC or CV) is the most negative, with respect to the output of the module,

controls the pulse-width modulator. The pulse-width modulator in turn controls the FETS. The more negative that the

controlling signal is with respect to the output, the harder it causes the pulse-width modulators to turn on the FETs.

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Pulse-Width Modulator, FETS, and Isolation Transformer

The pulse-width modulator controls the FETS. The FETS are arranged in an "H" bridge configuration with the + and - dc

rail at the top and bottom of the H. The 4 FETS are located on each leg of the "H", and the isolation transformer is located

on the horizontal bar of the H. The FETS located diagonally across from each other are alternately turned on and off (Q201

and Q204 are turned on, then off; followed by Q202 and Q203 being turned on, then off).

In this way current flows from the + dc rail through the primary of T201 to the - dc rail. When Q201 and Q204 are on,

current flows through the primary of T201 in one direction. When Q202 and Q203 are on, current flows through the primary

of T201 in the opposite direction. This generates the positive and negative pulses on the secondary winding of T201. The

output of T201 is then rectified and filtered to produce the dc output.

T202, located in series with T201, is part of the peak current limit circuit, which limits the amount of current that can flow

through the FETs. This protects the internal and external circuits from excessive currents that may result when the output of

the module is shorted.

Downprogrammer Circuit

The downprogrammer circuit internally draws current through the output rectifier and filter to keep the FET circuits turned

on when the module is programmed to a low or zero output. The maximum current that flows through the downprogrammer

is 10% of the total output current .

The downprogrammer circuit monitors the current at the output of the module and turns off when the output current reaches

1/2 of its full-scale rating.

Additionally, when voltage is programmed to a low value or programmed off, the downprogrammer helps to pull down the

output of the supply to speed up downprogramming time.

Readback Multiplexer

The readback multiplexer and the readback A to D are used to read back information from the module during normal

operation and during selftest. The microprocessor selects an input on the readback multiplexer and reads back data on that

input. The following signals comprise the inputs to the multiplexer:

IMON

VMON

+12V reference

+5V reference

temperature reference

power turn-on switch setting

CV DAC output

CC DAC output

The multiplexer inputs are between 2.5 volts and -2.5 volts, which is the voltage range of the 16-bit readback A to D

converter. The IMON and VMON signals are in the range of 0 to 2 volts, which represents the 0 to full-scale output of the

supply. The readback A to D converter converts the analog signal from the multiplexer to a digital signal, which is returned

to the microprocessor. The microprocessor in turn sends the corrected (calibrated) data to the display.

64 Thoery Of Operation

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OV Circuit

The OV circuit consists of a comparator that compares the output voltage of the module with an overvoltage reference

signal and shuts down the output when the output of the supply exceeds the overvoltage reference level.

The microprocessor generates the overvoltage reference by putting out a pulse-width modulated signal that is filtered to

produce a 0 to 4 volts reference (OVREF). This reference is proportional to an overvoltage setting of about 0 to 110% of

full scale output and is applied to the + input of the overvoltage comparator.

The output of the supply goes to a voltage divider which steps down the output to a proportional voltage that also ranges

from 0 to 4 volts. This signal is applied to the negative input of the overvoltage comparator. When the voltage at the

negative input exceeds the voltage at the positive input, the output of the comparator changes state, informing the

microprocessor that an overvoltage condition has occurred. The microprocessor then turns off the pulse-width modulators,

which turns off the FETs.

Theory Of Operation 65

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Replacement Parts

Table 5-1 lists the electrical components of the Agilent 6610xA Power Modules’main, bias, and front panel boards. Table

5-2 lists the mechanical components of the module. Table 5-3 lists all of the components of the connector assembly. These

tables provide the following information:

Reference designation

Agilent Technologies part number

Description of part

You can order parts from your local Agilent Technologies sales office. A list of the regional sales offices is given at the

back of this manual. When ordering parts, include the following information:

Agilent Technologies part number

Description of the part

Quantity desired

MPS model number (e.g. Agilent 66101A)

Note

The test point and locations diagrams in Chapter 6 identify the location of the electrical components on

the circuit boards.

Replacement Parts 67

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Table 5-1. Agilent 6610xA Power Modules Parts List - Electrical

Reference

Model

Part Number

Description

Designators

66101A

66102A

66103A

66104A

66105A

66101-61022

66102-61022

66103-61022

66104-61022

66105-61022

66106-61022

5060-3358

0160-5422

0180-4136

0160-5422

0180-4136

0160-4807

0160-4822

0180-4136

0160-5422

0160-4281

0160-5422

0160-4830

0160-4808

0160-4183

0160-4259

0180-4393

0160-7578

0160-4814

0160-5422

0180-4136

0160-7578

0160-5422

0160-4803

0160-5422

0160-4801

0160-7578

0180-3680

0160-4830

0160-4833

0160-5098

0160-4439

0160-7568

0160-7522

0160-7639

0160-6838

0160-7639

0160-7640

ASSEMBLY-POWER BOARD

ASSEMBLY-FAN (REF J102)

CAP .047uF 20%

CAP l0uF 20V

CAP .047uF 20%

CAP l0uF 20V

CAP 33pF 5% l00V

CAP l000pF 5%

CAP l0uF 20V

CAP .047uF 20%

CAP 2200pF 20%

CAP .047uF 20%

CAP 2200pF 10%

CAP 470pF 5%

CAP l000pF 20%

CAP .22uF 10%

CAP 560uF 250V

CAP 330pF 630VDC

CAP 150pF 5%

CAP .047uF 20%

CAP l0uF 20V

CAP 330pF 630VDC

CAP .047uF 20%

CAP 68pF 5% 100V

CAP .047uF 20%

CAP l00pF 5%

CAP 330pF 630VDC

CAP l0uF 50V

CAP 2200pF 10%

CAP .022uF 10%

CAP .22uF 10%

CAP 4700pF 20%

CAP 4700pF 250V 5%

CAP l000pF 630V

CAP 470pF 1600V

CAP 2200pF

66106A

All Models

66101A

Cl, C2

C4-C10

C11, C12

C13, C14

C15-C17

C18

C20-C24

C27

C28

C192

C201

C202

C203, C204

C206

C207, C208

C209

C210

C211, C212

C213

C214

C215

C217-C221

C222

C223

C224

C225, C226

C227

C228

C229

C230

C232

C301

66102A

66103A

66104A

66105A

CAP 470pF 1600V

CAP 330pF 1600V

66106A

68 Replacement Parts

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Table 5-1. Agilent 6610xA Power Modules Parts List - Electrical (continued)

Reference

Model

Part Number

Description

Designators

C303

66101A

66102A

66103A

66104A

66105A

66106A

66101A

66102A

66103A

0180-4398

0180-4400

0180-4397

0180-3649

0180-3648

0180-3169

0180-4398

0180-4400

0180-4397

0180-3649

0180 3696

0180-3648

0160-4323

0160-4259

0160-4323

0160-7562

Not Used

CAP 470uF 63V

CAP 220uF 63V

CAP l00uF 63V

CAP 47uF l00VDC

CAP l0uF 250V

CAP 4.7uF 250VDC

CAP 470uF 63V

CAP 220uF 63V

CAP l00uF 63V

CAP 47uF 100V

CAP 22uF 250V

CAP l0uF 250V

CAP .047uF 20%

CAP .22uF 10%

CAP .047uF 20%

CAP 6.8uF 63V

C304

66104A

66105A

66106A

C305

C306, C307

C307

C308

C309A

All Models

66101A-66103A

66104A-66106A

66101A

66102A, 66103A

66104A-66106A

All Models

66101A, 66104A

66102A, 66103A

66105A

C309B

0160-7562

Not Used

CAP 6.8uF 63V

0160-5050

0160-4808

0160-4831

0160-7001

0160-4830

0160-7001

0160-4281

0160-4808

0160-4795

0160-4831

0160-6616

0160-4832

0160-5166

0160-4795

0160-5467

0160-4791

0160-5892

0160-5468

0160−4807

0160−5892

0160−4808

0160-5422

0160-4822

0160 5422

0160-4832

0160-4787

0160-4805

CAP l.0uF 250V

CAP 470pF 5%

CAP 4700pF 10%

CAP 3300pF 100V

CAP 2200pF 10%

CAP 3300pF 100V

CAP 2200pF 20%

CAP 470pF 5%

CAP 4.7pF

CAP 4700pF 10%

CAP 6800pF 100V

CAP .0luF 10%

CAP .015uF 20%

CAP 4.7pF

CAP 0.0luF 63V

CAP l0pF 5% 100V

CAP .22uF 10%

CAP 0.47uF 50V

CAP 33pF 5% 100V

CAP .22uF 10%

CAP 470pF 5%

CAP .047uF 20%

CAP l000pF 5%

CAP .047uF 20%

CAP .0luF 10%

CAP 22pF 5% 100V

CAP 47pF 5% 100V

C310

C311

66106A

C312, C313

C314, C315

C316

All Models

66101A, 66102A

66103A, 66104A

66105A

C317

66106A

C318

C319

C320

C321

All Models

66101A

66102A-66106A

All Models

66101A, 66102A

66103A-66106A

C322

C323

C324, C325

C326, C327

C328

C329

C330

C331

Replacement Parts 69

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Table 5-1. Agilent 6610xA Power Modules Parts List - Electrical (continued)

Reference

Model

Part Number

Description

Designators

C332, C333

C334

C335

All Models

66101A

0160-5422

0160-4807

0160-4831

0160-4830

0160-4787

0160-4805

0160-4830

0160-5422

0160-5892

0160-4831

0160-4833

0160-7001

0160-4832

0160-6616

0160-4832

0160-4833

0160-4832

0160-4801

0160-4803

0160-4813

0160-4803

0160-4812

0160-4808

0160-4830

0180-4129

0160-7578

0160-4835

0160-4183

0160-5422

0180-4136

0180-4129

0160-4835

0160-4822

0160-4808

0160-5422

0160-4835

0160-4834

Not Used

CAP .047uF 20%

CAP 33pF 5% 100V

CAP 4700pF 10%

CAP 2200pF 10%

CAP 22pF 5% 100V

CAP 47pF 5% 100V

CAP 2200pF 10%

CAP .047uF 20%

CAP .22uF 10%

CAP 4700pF 10%

CAP .022uF l0%

CAP 3300pF 100V

CAP .0luF 10%

CAP 6800pF 100V

CAP .0luF 10%

CAP .022uF 10%

CAP .0luF 10%

CAP l00pF 5%

CAP 68pF 5% 100V

CAP 180pF 5%

CAP 68pF 5% 100V

CAP 220pF 5%

CAP 470pF 5%

CAP 2200pF 10%

CAP luF 35V

CAP 330pF 630VDC

CAP .luF 10% 50V

CAP l000pF 20%

CAP .047uF 20%

CAP l0uF 20V

66102A-66106A

66101A, 66102A

66103A-66106A

All Models

66101A-66104A

66105A

C336

C337

C338-C341

C342

C343

66106A

66101A

66102A

C346

66103A, 66104A

66105A

66106A

66101A

66102A-66104A

66105A

66106A

66101A-66105A

66106A

C347

C349

C358

C395

C396

C397

C403

C404

C407

C408-C410

C411-C413

C414, C415

C416

C418

C420-C425

C427A

All Models

66101A-66103A

66104A

66105A, 66106A

66101A-66103A

66104A

66105A, 66106A

66101A-66104A

66105A, 66106A

66101A-66106A

All Models

CAP luF 35V

CAP .luF 10% 50V

CAP l000pF 5%

CAP 470pF 5%

CAP .047uF 20%

CAP .luF 10% 50V

CAP .047uF 10%

C427B

Not Used

0160-4834

0160-0269

Not Used

0160-0269

Not Used

CAP .047uF 10%

CAP .luF 20%

C427B

C428, C429

CAP .luF 20%

C430

C431, C432

0160-5422

CAP .047uF 20%

70 Replacement Parts

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Table 5-1. Agilent 6610xA Power Modules Parts List - Electrical (continued)

Reference

Designators

C433

C434, C435

D201-D204

D205, D206

D207, D208

D210-D212

D215

Model

Part Number

Description

CAP l0pF 5% 100V

CAP .047uF 20%

DIODE-PWR RECT

DIODE-lN4150

DIODE-PWR RECT

All Models

66101A-66103A

66104A-66106A

66101A-66103A

66104A

66105A-66106A

66101A-66105A

66106A

All Models

66101A-66103A

66104A

66105A-66106A

66101A-66105A

66106A

All Models

66101A-66103A

66104A

0160-4791

0160-5422

1901-1087

1901-1214

1901-1098

1901-1214

Not Used

1901-1383

1901-1199

Not Used

1901-1199

1901-1098

5060-3378

1901-1383

1901-1199

Not Used

1901-1199

1901-1098

1901-0880

Not Used

1901-1383

1901-1199

Not Used

D216, D217

D301

DIODE-PWR RECT

D301A

DIODE-PWR RECT

DIODE-lN4150

ASSY-HS, DIODE (1901-1383)

DIODE-PWR RECT

D302

D303, D304

D303A, D304A

DIODE-PWR RECT

DIODE-lN4150

DIODE GEN PRP

D314-D316

D317, D318

D324, D325

D326

DIODE-PWR RECT

66105A-66106A

66101A-66105A

66106A

D326A

1901-1199

2110-0671

2110-0716

2110-0056

2110-0716

1252-1152

1252-0063

1251-8410

1252-0056

1251-8676

0490-1781

9100-1610

5080-2179

5080-2180

9140-0137

5080-2251

66101-80001

66102-80001

66103-80001

66104-80001

66105-80001

66106-80001

DIODE-PWR RECT

All Models

66101A

FUSE .125A 125V

FUSE-SUBMIN .5A

FUSE 6A 250V, CLIPS (2110-0726)

FUSE-SUBMIN .5A

CONNECTOR, To FRONT PANEL

CONNECTOR, To FAN

CONNECTOR, To MAINFRAME AC

CONNECTOR, To BIAS BOARD

RELAY 2C 24VDC

COIL 150nH 20%

CHOKE-LINE

CHOKE-INPUT

COIL lmH 5%

BEAD-FERRITE

CHOKE-OUTPUT

F201

F202

J102

J103

J301

J302

K201

L201

L202

L203

L204-L211

L301

66102A

66103A

66104A

66105A

CHOKE-OUTPUT

66106A

Replacement Parts 71

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Table 5-1. Agilent 6610xA Power Modules Parts List - Electrical (continued)

Reference

Designators

L302, L303

L304

Model

Part Number

Description

CHOKE-OUTPUT

BEAD-FERRITE

All Models

66101A-66103A

66104A-66106A

66101A

66102A-66106A

66101A

5080-2219

9140-1064

5080-2252

5080-2251

Not Used

5080-2251

Not Used

5080-2251

Not Used

L305, L306

L307

BEAD-FERRITE

66102A-66105A

66106A

BEAD-FERRITE

L308

66101A

66102A-66106A

All Models

66101A-66104A

66105A, 66106A

All Models

66101A-66106A

All Models

66101A-66103A

66104A-66106A

All Models

P301

Q201-Q204

Q208

1252-0167

5060-3457

1854-0087

5060-3382

5060-3466

1854-0828

1853-0086

5060-2942

5060-2948

5060-2942

0757-0447

0699-2246

1810-0483

0699-3414

0698-3155

1810-0355

0757-0346

0698-4123

0698-6619

0757-0346

0757-0442

1810-0206

0757-0280

0698-0082

0698-4202

0698-3155

0757-0346

8159-0005

0698-3155

0757-0430

1810-0279

1810-0280

0699-0486

0698-3445

CONNECTOR, HOOD

ASSY-FET, HS (1855-0510)

TRANSISTOR NPN SI

ASSY-FET, HS (1866-0670)

ASSY-FET, HS (1855-0631)

TRANSISTOR NPN SI

TRANSISTOR PNP Sl

ASSY-REGULATOR, HS (1826-0393)

ASSY-REGULATOR, HS (1826-0122)

ASSY-REGULATOR, HS (1826-0393)

RES 16.2K 1%

RES 25K .05%

NETWORK-RES SIP

RES 45K .lW .05%

RES 4.64K 1%

NETWORK-RES SIP

RES 10 1% .125W

Q301, Q302

Q303

Q305

Q401

Q403

Q404

R5, R6

RES 10 1% .125W

RES 499 1% .125W

RES 15K .1%

R10

R11

R12

R13

R15

R16

R18, R19

R20

R21

R22

RES 10 1% .125W

RES l0K 1% .125W

NETWORK-RES SIP

RES lK 1% .125W

RES 464 1% .125W

RES 8.87K 1%

RES 4.64K 1%

RES 10 1% .125W

RES-ZERO OHMS

RES 4.64K 1%

R23

R24

R25

R26

R27

R28

RES 2.21K 1%

NETWORK-RES SIP

RES 2K .1% .lW F

RES 348 1% .125W

72 Replacement Parts

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Table 5-1. Agilent 6610xA Power Modules Parts List - Electrical (continued)

Reference

Designators

Model

Part Number

Description

RES 464 1% .125W

R29

All Models

66101A-66103A

66104A-66106A

All Models

66101A-66103A

66104A-66106A

All Models

66101A, 66102A

66103A

0698-0082

0764-0045

0698-3430

0757-0403

0683-0335

0698-3445

0757-0407

0698-3631

0698-3430

0683-0335

0757-0403

0757-0442

0698-3432

1810-0203

0698-4470

0757-0290

0757-0449

0698-3446

0757-0442

0757-0279

0757-0442

0757-0401

0698-3279

0757-0430

0698-3631

0757-0442

0698-4406

0757-0283

0698-3159

0698-8827

0757-0280

0757-0462

0698-4099

0811-3896

0811-3897

0811-3896

0811-3891

0811-3892

5080-2217

5080-2218

5080-2224

0811-3771

0811-3772

0698-3279

R201, R202

R203

R204

R205

R206, R208

RES 22K 5% 2W Mo

RES 21.5 1% .125W

RES 121 1% .125W

RES 3.3 5% .25W

RES 348 1% .125W

RES 200 1% .125W

RES 330 5% 2W Mo

RES 21.5 1%

RES 3.3 5% .25W

RES 121 1% .125W

RES l0K 1% .125W

RES 26.1 1%

R210, R211

R212

R213

R214

R215-R217

R218, R219

R220

NETWORK-RES SIP

RES 6.98K 1%

RES 6.19K 1%

R221

R222

R223

R224

R225

R228, R229

R232

R234

R235

R236

R237, R238

R239

R240

R241

R244

R245, R246

R247

R249

R250

R301, R302

RES 20K 1% .125W

RES 383 1% .125W

RES l0K 1% .125W

RES 3.16K 1%

RES l0K 1% .125W

RES 100 1% .125W

RES 4.99K 1%

RES 2.21K 1%

RES 330 5% 2W Mo

RES l0K 1% .125W

RES 115 1% .125W

RES 2K 1% .125W

RES 26.1K 1%

RES lM 1% .125W

RES lK 1% .125W

RES 75K 1% .125W

RES 139 1% .125W

RES 20 5% l0W

RES 62 5% l0W

RES 20 5% l0W

RES 75 5% l0W

RES 300 5% l0W

SHUNT .005 OHMS

SHUNT .01 OHMS

SHUNT .035 OHMS

RES .25 OHM 1%

RES .50 OHM 1%

RES 4.99K 1%

66104A

66105A

66106A

66101A

R303

R304

66102A

66103A, 66104A

66105A

66106A

All Models

Replacement Parts 73

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Table 5-1. Agilent 6610xA Power Modules Parts List - Electrical (continued)

Reference

Model

Part Number

Description

Designators

R305

66101A

66102A

66103A

66104A

66105A

66106A

66101A

66102A

66103A

0757-0441

0757-0449

0757-0123

0698-3572

0757-0467

0757-0472

0757-0441

0757-0449

0757-0123

0698-3572

0757-0467

0698-6358

0698-3279

0757-0472

0757-0270

0757-0472

Not Used

RES 8.25K 1%

RES 20K 1% .125W

RES 34.8K 1%

RES 60.4K 1%

RES 121K 1%

RES 200K 1%

RES 8.25K 1%

RES 20K 1% .125W

RES 34.8K 1%

RES 60.4K 1%

RES 121K 1%

RES 100K .1%

RES 4.99K 1%

RES 200K 1%

RES 249K 1%

RES 200K 1%

R306

66104A

66105A

66106A

R307

R308

All Models

66101A-66104A

66105A

66106A

66101A-66104A

66105A

R309

R310

0811-1732

Not Used

RES 1 3W 5%

66106A

66101A

66102A

66103A

66104A

66105A

66106A

66101A

66102A

66103A

66104A

66105A

66106A

All Models

66101A

66102A

66103A

0757-0441

0757-0446

0757-0444

0757-0946

0698-4444

0698-3498

0757-0458

0757-0462

0757-0458

0757-0349

0698-4486

0757-0449

0699-0070

0698-0085

0698-0084

0757-0279

0757-0427

0757-0279

0757-0442

0698-3162

0757-0458

0757-0449

0757-0461

0757-0469

0698-4435

0757-0439

0698-3153

0698-4435

0757-0440

RES 8.25K 1%

RES 15K 1% .125W

RES 12.1K 1%

RES 8.2K 2%

RES 4.87K 1%

RES 8.66K 1%

RES 51.1K 1%

RES 75K 1% .125W

RES 51.1K 1%

RES 22.6K 1%

RES 24.9K 1%

RES 20K 1% .125W

RES 3.16M 1%

RES 2.61K 1%

RES 2.15K 1%

RES 3.16K 1%

RES 1.5K 1%

RES 3.16K 1%

RES l0K 1% .125W

RES 46.4K 1%

RES 51.1K 1%

RES 20K 1% .125W

RES 68.1K 1%

RES 150K 1%

RES 2.49K 1%

RES 6.81K 1%

RES 3.83K 1%

RES 2.49K 1%

RES 7.5K 1%

R311

R312

R313

66104A, 66105A

66106A

R314

R315

66101A

66102A

66103A

66104A

66105A

66106A

66101A

66102A

66103A

66104A, 66105A

66106A

74 Replacement Parts

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Table 5-1. Agilent 6610xA Power Modules Parts List - Electrical (continued)

Reference

Designators

R316

R317

R318

R319, R320

R321

R322

R323

Model

Part Number

Description

RES lM 1% .125W

RES 200K 1%

RES 22.6K 1%

RES 25K .05%

RES 47.5K .05%

RES 3.16M 1%

RES 1 1% 3W

RES 2 1% 3W

All Models

66101A

0698-8827

0757-0472

0757-0349

0699-2246

0699-2248

0699-0070

0811-2568

0811-2455

Not Used

0698-3433

Not Used

0698-8822

0698-4356

0757-0382

Not Used

66102A

66103A-66105A

66106A

66101A,66102A

66103A

RES 28.7 1%

R323A

R323B

RES 6.81 1%

RES 12.7 1%

RES 16.2 1%

66104A

66105A

66106A

66101A,66102A

66103A

Not Used

0698-8822

0698-4356

Not Used

RES 6.81 1%

RES 12.7 1%

66104A

66105A,66106A

All Models

66101A-66105A

66106A

R324

R325

0757-0283

0699-3415

0699-3417

0699-3415

0699-3103

0699-2248

0699-2879

0699-3446

0699-3104

0699-3448

0757-0280

0698-6362

0698-6631

0698-8184

0699-2246

0698-6353

0699-3447

0698-6362

0698-6631

0698-8184

0699-2246

0698-6353

0698-6358

0698-3159

0757-0442

0757-0443

0757-0441

0757-0447

RES 2K 1% .125W

RES 5K .lW .05%

RES 3.85K .lW

RES 5K .lW .05%

RES 19K .05%

RES 47.5K .05%

RES 80K .05% 5PPM .lW

RES 125K .05%

RES 250K .125W

RES 300K .05%

RES lK 1% .125W

RES lK .1% .125W

RES 2.5K .1%

RES 7.5K 1%

RES 25K .05%

RES 50K .1%

RES 85K .1%

RES lK .1% .125W

RES 2.5K .1%

RES 7.5K 1%

RES 25K .05%

RES 50K .1%

R326

R327, R328

All Models

66101A

66102A

66103A

66104A

66105A

66106A

All Models

66101A

66102A

66103A

66104A

66105A

66106A

66101A

66102A

66103A

66104A

R329, R330

R331

R332

R333

66105A

66106A

66101A

RES 100K .1%

RES 26.1K 1%

RES l0K 1% .125W

RES 11K 1% .125W

RES 8.25K 1%

66102A, 66103A

66104A

66105A

66106A

RES 16.2K 1%

Replacement Parts 75

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Table 5-1. Agilent 6610xA Power Modules Parts List - Electrical (continued)

Reference

Model

Part Number

Description

Designators

R334

66101A-66103A

66104A

66105A

66106A

66101A-66103A

66104A

66105A

66106A

All Models

66101A, 66102A

66103A

0698-7933

0698-8607

0698-7933

0698-8607

0699-3417

0699-3449

0699-3417

0699-3449

1810-0483

0699-3416

0699-2248

0699-3416

0699-2246

0698-3430

0811-2568

0811-2455

Not Used

RES 3.83K .1%

RES 4.5K .1%

RES 3.83K .1%

RES 4.5K .1%

RES 3.85K .lW

RES 4.5K .05%

RES 3.85K .lW

RES 4.5K .05%

NETWORK-RES SIP

RES 100K .lW

RES 47.5K .05%

RES 100K .lW

RES 25K .05%

RES 21.5 1%

R336

R337

R338

66104A

66105A, 66106A

All Models

66101A

66102A

66103A-66105A

66106A

R339

R340

RES 1 1% 3W

RES 2 1% 3W

0698-3433

Not Used

0698-8822

0698-4356

0757-0382

Not Used

RES 28.7 1%

R340A

R340B

66101A, 66102A

66103A

RES 6.81 1%

RES 12.7 1%

RES 16.2 1%

66104A

66105A

66106A

66101A, 66102A

66103A

Not Used

0698-8822

0698-4356

Not Used

RES 6.81 1%

RES 12.71%

66104A

66105A, 66106A

All Models

66101A

66102A

66103A, 66104A

66105A

R341

R342

0698-3430

0757-0462

0698-3450

0757-0470

0757-0463

0757-0470

0757-0441

0757-0288

0757-0441

0757-0447

0757-0446

0757-0447

0698-3450

0698-4509

0757-0280

0699-2248

8159-0005

0699-3416

RES 21.5 1%

RES 75K 1% .125W

RES 42.2K 1%

RES 162K 1%

RES 82.5K 1%

RES 162K 1%

RES 8.25K 1%

RES 9.09K 1%

RES 8.25K 1%

RES 16.2K 1%

RES 15K 1% .125W

RES 16.2K 1%

RES 42.2K 1%

RES 80.6K 1%

RES lK 1% .125W

RES 47.5K .05%

RES-ZERO OHMS

RES 100K .lW

66106A

66101A

66102A

66103A

66104A

66105A

66106A

66101A

R343

R344

66102A-66106A

All Models

66101A-66105A

66106A

R345

R346

R347

76 Replacement Parts

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Table 5-1. Agilent 6610xA Power Modules Parts List - Electrical (continued)

Reference

Model

Part Number

Description

Designators

R348

66101A, 66102A

66103A, 66104A

66105A

0757-0441

0757-0444

0698-3136

0698-3159

0757-0472

8159-0005

0698-6358

0699-2246

0683-2255

0698-4443

0757-0349

0757-0467

0698-6376

Not Used

0757-0283

0757-0442

0698-6360

0698-6320

0698-6360

0698-8061

0698-4196

8159-0005

0698-0064

8159-0005

0698-7841

0698-6376

0698-6619

0699-2248

0698-6359

0698-7841

0698-8050

0757-0465

0699-2246

0698-3279

0698-6358

0698-8812

Not Used

RES 8.25K 1%

RES 12.1K 1%

RES 17.8K 1%

RES 26.1K 1%

RES 200K 1%

RES-ZERO OHMS

RES 100K .1%

RES 25K .05%

RES 2.2M 5% .25W

RES 4.53K 1%

RES 22.6K 1%

RES 121K 1%

66106A

R349

R350

All Models

66101A-66105A

66106A

R351

R352

R353

All Models

66101A

66102A

66103A

66104A

RES 200K .1%

66105A, 66106A

All Models

66101A-66103A

66104A

R354

R355

R359

RES 2K 1% .125W

RES l0K 1% .125W

RES l0K .1%

RES 5K .1% .125W

RES 10K .1%

RES 8.25K .1%

RES 1.07K 1%

RES-ZERO OHMS

RES 9.31K 1%

RES-ZERO OHMS

RES 164K .1%

RES 200K .1%

RES 15K .1%

RES 47.5K .05%

RES 80K 0.l%

RES 164K .1%

RES 256K .1%

RES 100K 1%

RES 25K .05%

RES 4.99K 1%

RES 100K .1%

RES 1 1% .125W

66105A

66106A

66101A

66102A

66103A

66104A

66105A

66106A

R360

R361

66101A

66102A

66103A, 66104A

66105A

66106A

R362

R363

R364

R365

R367

All Models

66101A, 66102A

66103A-66105A

66106A

66101A, 66102A

66103A-66106A

All Models

AU Models

All Models

0757-0346

0698-8812

Not Used

0699-1069

0699-0486

0757-0437

0757-0407

0757-0280

8159-0005

0757-0449

RES 10 1% .125W

RES 1 1% .125W

R368, R369

R401

R402

R406

R407, R408

R409-R411

R416

RES 229 .1%

RES 2K .1% .lW F

RES 4.75K 1%

RES 200 1% .125W

RES lK 1% .125W

RES-ZERO OHMS

RES 20K 1% .125W

R419

Replacement Parts 77

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Table 5-1. Agilent 6610xA Power Modules Parts List - Electrical (continued)

Reference

Model

Part Number

Description

Designators

R420

66101A, 66102A

66103A

0698-6358

0699-2248

0698-6358

0699-2246

0698-3155

0757-0346

0698-8812

0757-0280

0698-8812

Not Used

RES 100K .1%

RES 47.5K .05%

RES 100K .1%

RES 25K .05%

RES 4.64K 1%

RES 10 1% .125W

RES 1 1% .125W

RES lK 1% .125W

RES 1 1% .125W

66104A

66105A, 66106A

All Models

66101A-66103A

66104A-66106A

66101A-66105A

66106A

R421

R422

R423

R424

R427

R428

R429

0698-8812

Not Used

0698-8812

Not Used

RES 1 1% .125W

66101A-66103A

66104A, 66105A

66106A

0757-0346

0757-0280

0837-0397

3101-2243

3101-2966

9100-5020

9100-5021

9100-5022

9100-5001

9100-5002

9100-5003

9140-0974

1821-1479

5080-2529

1818-4134

1820-2724

5080-2236

5080-2530

1826-2402

1826-2284

1826-2484

1820-3399

1826-1409

1826-1021

1990-1502

1820-2110

1818-4792

1820-2110

1826-1896

1990-1502

1826-2341

1820-8433

RES 10 1% .125W

R430

RT301

S201

T201

All Models

66101A

66102A

66103A

66104A

66105A

RES lK 1% .125W

THERMISTOR

SWITCH 8-lA

SWITCH DPDT

TRANSFORMER-POWER

INDUCTOR-FIXED

MICROPROCESSOR, SOCKET (1200-1274)

PROGRAMMED-ROM, SOCKET (1200-0567)

IC-MEMORY, 64K

66106A

T202

U11

U12

U13

U14

U15

U17-U20

U21

U22

U23

U24

U25

U26

U201, U202

All Models

AU Models

All Models

IC SN74ALS573BN

PROGRAMMED-GAL, SOCKET (1200-0639)

IC-CONVERTOR AD7837BN

IC-CONVERTOR

IC MC74HC273N

IC 1013

ANALOG MULTIPLEXER

OPTO ISOLATOR

IC-INTERFACE

IC-EEPROM

IC-INTERFACE

IC-LINEAR

OPTO ISOLATOR

IC-VOLTAGE SENSE

IC PULSE WIDTH MODULATOR

78 Replacement Parts

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Table 5-1. Agilent 6610xA Power Modules Parts List - Electrical (continued)

Reference

Model

Part Number

Description

Designators

U203

All Models

66101A-66103A

66104A-66106A

All Models

1826-2075

1990-1502

1858-0069

1826-0175

1826-0346

1826-0962

1826-1896

1826-1370

1826-1895

1826-1553

1990-1502

1826-0346

1902-0968

1902-0951

1902-0018

0410-2109

IC UC3825N

U204

U205

U206

U301

OPTO ISOLATOR

TRANSISTOR ARRAY 18P-DIP

IC 319

IC OP-AMP

IC-LINEAR

IC 365

PRECISION OP-AMP

IC-LINEAR

OPTO ISOLATOR

IC OP-AMP

U302

U303

U304

U305

U306

U307

VR201

VR302

VR304, VR305

DIODE-ZENER 27V 5%

DIODE-ZENER

DIODE-ZENER lN941 11.7V

CRYSTAL 12.000 MHZ

All Models

5060-3455

0180-3587

0180-4273

0160-5422

0180-3587

0180-4389

0180-4129

0160-4835

1901-0731

2110-0820

1252-0056

1251-8676

1826-0527

5060-2942

0699-0486

0699-1069

0698-3447

0757-0437

3101-2966

9100-4932

1906-0006

ASSEMBLY-BIAS BOARD

CAP 1000uF 50V

CAP 1000uF

CAP .047uF 20%

CAP 1000uF 50V

C401

C402

C404

C405

C406

C408, C410

C411

D401, D402

D402

F401

J401

J402

Q402

Q404

R403

R404

R405

R406

CAP 6800uF 25V

CAP luF 35V

CAP .luF 10% 50V

DIODE-PWR RECT

FUSE .5A 250V, HOLDER (2110-0714)

CONNECTOR, TO POWER BOARD

IC LM337T

ASSY-HS, TO-220

RES 2K .1% .lW F

RES 229 .1%

RES 422 1% .125W

RES 4.75K 1%

S402

T401

U401, U402

SWITCH DPDT

TRANSFORMER-BIAS

DIODE BRIDGE 400V

All Models

5060-3454

0160-5422

0160-4833

1990-1554

1990-1553

1990-1492

1902-3110

1252-3844

ASSEMBLY-FRONT PANEL BOARD

CAP .047uF 20%

CAP .022uF 10%

LED GREEN

LED YELLOW

DISPLAY, LED

DIODE-ZENER 5.9V 2%

CONNECTOR, TO POWER BOARD

C501, C502

C503, C504

CR501-CR503

CR504-CR506

D501-D508

D509

J501

Replacement Parts 79

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Table 5-1. Agilent 6610xA Power Modules Parts List - Electrical (continued)

Reference

Designators

R501

Model

Part Number

Description

NETWORK RES SIP

All Models

1810-0405

1810-0636

1810-0483

1821-0045

1858-0069

1820-3344

R502

R503

R504

R505

R506

R507

U501

U502

U503

U504

NETWORK RES SIP

IC DISPLAY DRIVE

TRANSISTOR ARRAY 18P-DIP

IC MC74HC595N

Table 5-2. Agilent 6610xA Power Modules Parts List - Mechanical

Description

Model

Part Number

0403-0086

0515-1946

0515-0430

0515-1038

0535-0031

1460-2307

5001-6759

5001-6760

5001-6761

5001-6762

5040-1677

5040-1678

5040-1680

5040-1681

5080-2193

5080-2194

5080-2195

5080-2223

66101-40001

66102-40001

66103-40001

66104-40001

66105-40001

66106-40001

All Models

66101A

BUMPER FOOT PRESS-IN

SCREW-MACH, M3 X 0.5 6MM LG, TORX T10 FLT, (REF COVER)

SCREW-MACH, M3 X 0.5 6MM LG, TORX T10 PAN, (REF PC BD)

SCREW-MACH, M3 X 0.5 35MM LG, TORX T10 PAN, (REF FAN)

NUT-HEX W/LKWR, M3 X 0.5, (REF FAN)

SPRING (REF LATCH)

CHASSIS

COVER

BRACKET-FAN

INSULATOR

BEZEL-LEFT

BEZEL-RIGHT

LATCH-PLASTIC

PULLER

ASSEMBLY-FRONT PANEL CABLE (REF J501/J3)

ASSEMBLY-BIAS BOARD CABLE (REF J402/J302)

ASSEMBLY-BIAS BOARD CABLE (REF J401/J301)

LABEL, AC/S3 SWITCH CONFIG

PANEL-FRONT

66102A

66103A

66104A

66105A

66106A

PANEL-FRONT

80 Replacement Parts

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Table 5-3. Output Connector Assembly Parts List

Reference

Part Number

Description

Designators

5060-3470

0160-5422

0160-4281

1810-1379

1251-8410

1252-4311

0757-0442

3101-3133

0360-2423

1902-0968

ASSEMBLY-OUTPUT CONNECTOR BOARD

CAP .047uF 20%

CAP 2200pF 20%

C602, C603

C604

C605

J601

J602, J603

R601

SW1

TB601

VR601-VR603

NETWORK-CAP SIP

CONNECTOR, TO POWER BOARD

CONNECTOR, TO CONNECTOR BOARD

RES l0K 1% .125W

SWITCH, SLIDE

TERMINAL BLOCK

DIODE-ZENER 27V 5%

5060-3351

0180-4136

2110-0757

0490-1670

0490-1405

1252-4310

0686-3305

ASSEMBLY-OUTPUT RELAY BOARD

CAP l0uF 20V

FUSE .062A

PWR RELAY

RELAY 2C 12 VDC

C601

F601, F602

K601-K604

K605-K607

P602, P603

R601-R603

CONNECTOR, TO CONNECTOR BOARD

RES 33 5% .5W CC

5060-3386

5060-3387

1400-0307

5040-1682

5040-1683

5080-2220

OUTPUT ASSEMBLY-without relays

OUTPUT ASSEMBLY-with relays

Cable Tie

Hood Base

Hood Cover

Hood Label

Replacement Parts 81

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Diagrams

This chapter contains test point and component location diagrams and schematics for troubleshooting the Agilent 6610xA

Power Modules.

SHOCK HAZARD Hazardous voltages are present throughout the Power and Bias board assemblies. Ac line voltage is

present on some connectors even when the module is not turned on. The dc rail voltage to the module is 310 volts when the

unit is turned on.

Schematic Sheets

Foldout #1

Foldout #2

Foldout #3

Foldout #4

Foldout #5

Foldout #6

front--Power board sheet 1 of 5

back--Power board sheet 2 of 5

front--Power board sheet 3 of 5

back--Power board sheet 4 of 5

front--Power board sheet 5 of 5

back--Front panel schematic and component locations

front--Output connector board schematic and component locations

back--Relay board schematic and component locations

front--Bias board schematic and component locations

back--Power board component locations and test points

front--Main board Component coordinates

back--blank

Component Location Diagrams

Component location diagrams are provided for all of the module circuit boards.

The component location diagram for the power board is located on the back of the last foldout sheet (the bias board

schematic) foldout sheet. The diagram is divided into columns and rows designated "x coordinates" and "y coordinates".

The table on the facing page lists all of the components on the Power board and gives the coordinate location of each

component. For example, resistor R201 is located at x coordinate 3.9 and y coordinate 1.4. Refer to Chapter 5 for the part

number and description of each electrical part.

The test points shown on the component location diagram for the power board correspond with the test points that are used

in the troubleshooting procedures of Chapter 3.

The component location diagrams for the bias, front panel, connector, and relay boards are located on the same sheets as

their schematic diagrams.

Diagrams 83

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Schematic Notes

Notes that apply to all schematic sheets are as follows:

All resistors are in ohms +/-1%, 1/8 W, unless otherwise specified.

All capacitors are in microfarads unless otherwise specified.

Refer to the parts list (Table 5-1) for the values of the resistors and capacitors that are enclosed by a heavy rectangle

on the schematic. Their values differ from model to model. The schematic shows only the values used by Model

66105A.

An asterisk negates a signal name. For example, WR appears on the schematic as WR*.

Signal line destinations are given inside the parentheses at the end of the signal lines. For example, PCLR* (S02C5)

on Power board schematic sheet 1 of 5, indicates that the PCLR* signal continues on schematic sheet 2 of 5 at grid

coordinates C, 5. Coordinates are labeled on the schematic border.

Signal lines that are terminated by flags

direction.

continue onto other sheets. Note that flags do NOT indicate signal flow

Signal lines without flags go to another location of the same schematic sheet.

Test points on the schematic sheets (e.g. TP22) identify the location of the test points used in the troubleshooting

procedures in Chapter 3.

Voltages and waveforms shown on the schematics are obtained when following the troubleshooting procedures in

Chapter 3.

84 Diagrams

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L305

L306

R309

L308

L307

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+5V

13 20 33 53 74

VCC

R501

I/O79

I/O78

I/O77

I/O76

I/O75

I/O73

I/O72

I/O71

D505

HDSP-A103

D506

D507

D508

470.0 5%

1810-1979

R501

HDSP-A103

R501

470.0 5%

1810-1979

R507

470.0 5%

1810-1979

R501

MODE

4.7K 5%

1810-1670

470.0 5%

1810-1979

4.7K 5%

1810-1670

R507

R502

I/O70

I/O69

I/O67

I/O66

I/O65

I/O64

I/O63

I/O62

+5V

SDATA

SCLK

J501

I/O51

CLK

1990-1492

4.7K 5%

1810-1670

R502

R507

1252-3844

470.0 5%

1810-1979

U501

R508

R502

470.0 5%

1810-1979

4.7K 5%

1810-1670

IDISP

A40MX02

I/O44

I/O46

I/O45

4.7K 5%

1810-1670

R508

470.0 5%

1810-1979

R502

VDISP

ADISP

R508

470.0 5%

1810-1979

4.7K 5%

1810-1670

U502

4.7K 5%

1810-1670

ULN2003AD

10 PIN

RT < POST

I/O5

I/O6

I/O8

I/O9

+5V

SDI

DCLK

PRA

PRB

COM

1858-0104

I/O48

I/O49

I/O80

R503

I/O23

I/O24

I/O25

I/O26

I/O28

I/O29

I/O30

I/O31

D501

HDSP-A103

D502

HDSP-A103

D503

HDSP-A103

D504

HDSP-A103

R503

5% 470.0

1810-1979

R503

5% 470.0

1810-1979

R503

5% 470.0

1810-1979

5% 470.0

1810-1979

R504

I/O32

I/O34

I/O35

I/O36

I/O37

I/O38

I/O39

I/O40

1990-1492

R504

5% 470.0

1810-1979

R509

100K

I/O16

I/O21

R504

5% 470.0

1810-1979

0699-3993

C503

R504

5% 470.0

1810-1979

0.1 10%

16V X7R

0160-7828

5% 470.0

1810-1979

U503

ULN2003AD

R510

+5V

I/O22

I/O1

I/O10

I/O11

I/O12

I/O14

I/O15

10K

0699-3970

CR501

R505

ADDR

UNR

DIS

220.0 5%

1810-1659

1990-1554

CR502

PROT

R505

COM

1858-0104

GND

27 47 68

220.0 5%

1810-1659

1990-1554

CR503

R505

220.0 5%

1810-1659

1990-1554

CR504

R505

220.0 5%

1810-1659

1990-1553

CR505

R506

220.0 5%

1810-1659

1990-1553

CR506

R506

220.0 5%

1810-1659

1990-1553

MODULE FRONT PANEL

5020-2935

04/01/99

SHEET 1 OF 1

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10 22

- I

- OUT

+ OUT

SENSE

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Main Board Component Coordinates

8.1

7.3

8.5

7.9

9.1

9.7

9.1

6.5

7.4

8.5

9.3

10.7

8.5

9.8

8.0

5.9

6.9

7.3

7.4

5.6

6.7

1.1

0.5

10.6

7.1

4.1

1.6

2.3

0.5

1.6

1.1

2.9

2.3

1.5

5.0

1.1

0.5

1.0

0.0

1.0

0.0

2.3

3.2

11.3

0.5

0.0

5.8

4.0

5.0

3.3

5.7

10.3

5.6

5.2

6.6

8.5

15.7

15.6

13.5

8.5

15.5

15.7

7.1

9.1

15.5

15.7

3.7

2.9

1.6

2.6

0.5

2.6

2.4

7.3

1.5

3.9

2.3

2.6

2.1

1.6

2.2

2.6

3.0

2.8

2.1

1.5

1.9

0.0

0.5

1.7

1.9

9.8

0.5

6.4

0.5

0.0

0.5

1.1

0.0

10.4

2.8

3.0

0.5

10.3

0.0

0.6

0.5

0.0

0.5

3.9

4.4

3.7

10.6

7.1

6.7

6.4

6.7

7.2

7.7

13.5

12.1

8.0

14.1

8.5

13.5

14.1

13.5

13.6

13.5

14.1

14.7

15.4

14.9

14.5

15.4

14.8

15.4

14.0

12.1

13.7

12.2

14.8

12.7

13.7

13.2

11.0

12.1

13.6

11.0

12.2

14.2

6.0

7.6

8.0

9.6

9.0

8.4

9.6

7.2

7.8

10.5

9.9

10.3

9.9

10.2

10.8

5.2

10.8

10.0

10.3

7.2

1.4

1.0

5.6

9.6

l.0

7.6

15.4

10.9

13.1

12.9

5.5

14.6

10.9

9.1

9.8

12.1

3.4

9.1

4.4

2.2

2.0

3.1

3.0

3.4

2.1

3.7

3.6

4.0

2.7

2.4

0.4

0.3

0.4

0.9

0.6

2.5

2.4

1.9

0.7

1.9

2.7

2.3

3.5

2.6

0.9

0.0

1.8

0.6

1.8

4.8

2.3

4.4

3.9

2.2

4.1

3.3

2.8

1.1

2.5

C220

C221

C222

C223

C224

C225

C226

C227

C228

C229

C230

C232

C301

C302

C303

C304

C305

C306

C307

C308

C309A

C309B

C310

C311

C312

C313

C314

C315

C316

C317

C318

C319

C320

C321

C322

C323

C324

C325

C326

C327

C328

C329

C330

2.1

3.2

2.9

2.1

2.4

3.7

3.3

2.3

2.0

1.3

3.3

2.2

3.5

4.3

4.5

3.3

4.6

4.7

3.4

2.5

3.6

2.9

3.3

3.6

3.9

4.0

3.7

3.5

2.5

3.9

3.1

3.3

4.2

3.2

4.1

2.8

3.3

3.9

C331

C332

C333

C334

C335

C336

C337

C338

C339

C340

C341

C342

C343

C345

C346

C347

C349

C358

C395

C396

C397

C403

C407

C409

C412

C413

C414

C415

C416

C418

C420

C421

C422

C425

C427A

C427B

C428

C429

C430

C431

C432

C433

C434

12.7

13.7

13.4

13.2

10.9

12.2

14.2

14.9

15.4

12.2

12.7

12.2

13.6

11.0

14.1

7.2

11.6

14.7

10.9

9.6

7.3

6.l

8.5

6.4

8.0

10.2

15.4

7.9

9.1

7.5

8.2

7.1

15.8

12.0

5.7

9.8

14.7

9.8

13.5

13.1

3.7

3.6

4.1

3.8

3.7

3.9

3.3

4.1

4.0

3.4

3.3

3.0

2.8

3.8

2.9

4.1

3.6

2.7

2.2

4.1

2.0

3.3

4.2

2.4

2.5

3.5

3.9

3.8

3.5

1.9

0.7

0.6

3.4

3.3

4.1

4.7

4.9

4.5

3.3

1.7

2.9

2.7

C435

C436

C437

D201

D202

D203

D204

D205

D206

D207

D208

D210

D211

D212

D215

D216

D217

D301

D302

D303

D304

D314

D315

D316

D317

D318

D324

D325

D326

4.1

2.0

1.8

2.0

1.8

4.8

3.7

4.3

3.1

3.2

2.4

2.5

3.1

4.5

2.8

4.7

2.5

4.4

4.7

3.1

4.2

3.2

4.2

2.5

3.3

3.4

4.5

2.1

2.0

0.1

2.5

0.6

2.2

0.0

0.7

2.9

0.4

0.1

0.3

0.0

L301

L302

L303

L304

P301

Q201

Q202

Q203

Q204

Q208

Q301

Q302

Q303

Q305

Q401

Q403

R10

R11

R12

R13

R15

R16

R18

R19

R20

R21

R22

R23

R24

R25

R26

R27

R28

R29

5.4

6.3

13.4

8.9

16.2

2.2

2.1

6.7

14.3

14.9

11.1

5.5

7.9

6.7

7.4

9.7

7.9

8.5

8.0

9.1

8.6

9.7

8.0

8.5

9.1

9.7

10.1

8.6

10.7

10.4

7.3

6.8

6.4

6.8

10.7

5.6

12.5

8.6

7.1

8.5

3.5

4.3

4.2

4.5

4.6

3.9

3.5

2.9

3.1

3.7

4.6

1.9

2.5

3.7

2.4

3.0

2.9

0.8

2.8

2.1

1.9

2.0

3.5

4.1

2.3

2.6

3.8

3.7

2.8

3.3

0.8

1.8

2.2

2.1

2.3

3.0

1.0

0.5

2.9

3.9

4.4

0.5

R201

R202

R203

R204

R205

R206

R208

R210

R211

R212

R213

R214

R215

R216

R217

R218

R219

R220

R221

R222

R223

R224

R225

R228

R229

R232

R234

R235

R236

R237

R238

R239

R240

R241

R242

R244

R245

R246

R247

R249

R250

R301

R302

1.4

0.6

4.2

4.3

4.4

3.3

4.8

3.1

3.2

2.7

2.5

2.6

2.7

4.0

2.6

1.8

2.2

1.6

2.2

1.9

3.0

2.8

1.5

1.8

2.7

3.2

2.3

3.8

3.1

1.7

0.7

1.2

0.6

1.0

0.7

0.5

1.4

1.1

0.5

4.0

R303

R304

R305

R306

R307

R308

R310

R311

R312

R313

R314

R315

R316

R317

R318

R319

R320

R321

R322

R323

R324

R325

R326

R327

R328

R329

R330

R331

R332

R333

R334

R336

R337

R338

R339

R340

R341

R342

R343

R344

R345

R346

R347

4.6

3.7

4.1

4.3

3.8

4.0

3.3

2.6

3.2

3.5

3.7

2.6

2.7

4.0

2.8

3.1

3.0

3.3

4.0

2.6

2.7

3.0

3.5

2.8

4.2

2.9

3.6

3.8

3.9

4.0

2.5

3.8

3.7

4.0

3.5

3.0

3.2

3.0

3.6

3.4

R348

R349

R350

R351

R352

R353

R354

R355

R359

R360

R361

R362

R363

R364

R365

R367

R368

R369

R401

R402

R407

R408

R409

R410

R411

R416

R419

R420

R421

R422

R423

R424

R427

R428

R429

R430

RT301

11.5

6.6

12.7

16.3

11.0

14.7

8.0

11.0

13.9

14.0

10.9

13.5

12.1

7.7

3.4

2.9

4.2

3.5

2.5

3.6

2.8

3.3

4.8

4.3

4.0

3.4

3.1

3.9

4.8

3.9

3.8

3.9

0.3

2.1

2.0

4.0

3.2

3.4

3.0

1.7

1.9

2.3

4.8

2.5

2.7

0.0

2.5

2.7

0.7

0.4

U11

U12

U13

U14

U15

U17

U18

U19

U20

U21

U22

0.4

0.8

2.0

2.9

3.1

0.8

2.2

2.8

2.4

1.2

2.0

0.8

1.1

0.5

1.5

3.2

0.3

2.6

4.0

2.9

2.3

1.8

2.0

1.4

3.4

3.6

2.8

3.6

2.4

1.3

2.9

2.4

3.4

2.9

3.2

3.7

0.3

3.9

0.3

C10

C11

C12

C13

C14

C15

C16

C17

C18

C20

C21

C22

C23

C24

C27

C28

C192

C201

C202

C203

C204

C206

C207

C208

C209

C210

C211

C212

C213

C214

C215

C217

C218

C219

9.8

9.6

9.5

8.5

2.5

3.4

14.7

4.6

U23

U24

U25

U26

8.0

10.9

9.8

5.9

11.0

12.9

14.1

13.5

10.9

9.7

9.4

9.9

5.8

8.0

12.4

0.1

4.7

3.2

U201

U202

U203

U204

U205

U206

U301

U302

U303

U304

U305

U306

U307

VR201

VR302

VR304

VR305

11.5

7.7

11.5

10.4

14.1

12.1

3.4

10.4

5.3

15.4

5.4

11.0

11.3

0.8

6.3

8.0

9.1

2.6

4.7

2.1

6.7

7.1

12.1

13.5

12.8

13.0

12.0

15.4

12.9

15.4

14.3

11.0

14.1

11.0

F201

F202

J102

J103

J301

J302

K201

S201

T201

T202

L201

L202

L203

8.4

8.6

6.7

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Manual Backdating

This appendix describes the changes that must be made to this manual to make it comply with module serial numbers lower

than those on the title page. Look for the serial number of your module on the table and make only those changes listed for

that serial number.

Agilent

Model

66101A

Prefix

Number

3444A

3421A

3231A

3151A

3147A

3139A

3421A

3226A

3204A

3151A

3147A

3139A

3421A

3226A

3204A

Serial Number

Make

Changes

Agilent

Model

66103A

Prefix

Number

3151A

3147A

3139A

3445A

3421A

3306A

3207A

3421A

3218A

3207A

3421A

3207A

Serial Number

Make

Changes

1,5-7

1,5-8

1,5-8,10

1,2

1-3

1-3,5

1-3,5,11

03900-03271

03270-01394

01393-01354

00516-00360

00359-00151

00150-00141

00140-00101

05364-04131

00597-00420

00419-00195

00194-00153

00152-00141

00140-00101

04175-03501

00444-00273

00272-00156

00155-00149

00148-00141

00140-00101

02435-01778

01777-00840

00839-00795

00421-00395

00394-00101

01030-00811

00810-00403

00215-00126

00126-00101

00927-00761

00760-00369

00222-00101

1,4

1,4,5

1,4-6

1,4-9

1,4-10

66104A

66102A

66103A

1,5

66105A

66106A

1,5,6

1,5-7

1,5-9

1,5-10

1,2

1,2,5,12

1,2,5,12,13

1,2

1,2,5

1,5

1,5,6

CHANGE 1:

In the parts list on page 78 and in the table on schematic sheet 3 of 5, change the part number of U2 to

5080-2235 and U6 to 5080-2237.

CHANGE 2:

CHANGE 3:

In the parts list on page 79, change the part number of U301 to 1826-0346.

In the parts list on page 73 and in the table on schematic sheet 3 of 5,change R301 and R302 to 25

ohms , part number 0811-3890.

In the parts list on page 68 and in the table on schematic sheet 3 of 5,change C301 to 1500pF, part

number 0160-7638.

In the parts list on page 71, change the part number of D301, 303, 304 and 326 to 1901-1199.

In the parts list on page 77 and in the table on schematic sheet 3 of 5,change R360 to zero ohms, part

number 8159-0005.

CHANGE 4:

In the parts list on page 70 and in the table on schematic sheet 3 of 5,change C335 to 2200pF, part

number 0160-4830.

In Table 2-1 on page 13, change the maximum programmable overvoltage to 9.6V.

In the program listing on page 52, change line 240 to read:

DATA 66,4,25,9.25002,9.6,0,255,100,20,66101

CHANGE 5:

CHANGE 6:

CHANGE 7:

In the parts list on page 62, change the part number of the power boards from 6610xA-61022 to

6610xA-61020.

In the parts list on page 75, change the part number of the output connector board from 5060-3470 to

5060-3350.

In the parts list on page 74, delete bumper foot, part number 0403-0086. Indicate that software revision

A.00.02 applies to these and earlier models.

Backdating 97

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CHANGE 8:

CHANGE 9:

In the parts list on page 65, change L204 through L211 from part number 5080-2251 to 9170-0442.

On page 67, change R204, R214 to 61.8 ohms, part number 0757-0397. On page 65, delete D216,

D217, part number 1901-1214.

CHANGE 10:

CHANGE 11:

Indicate that software revision A.00.01 applies to these and earlier models.

In the parts list on page 63, change C311 from 0160-4831 to 2200pF, part number 0160-4830. On page

68, change R311 from 0757-0349 to 51.1K part number 0757-0458.

CHANGE 12:

CHANGE 13:

In the parts list on page 68, change R308 from 249K to 200K part number 0757-0472. Delete R309.

In the parts list on page 63, change C303 from 0180-3648 to 0180-4497. On page 71, change R348

from 17.8K to 12.1K part number 0757-0444. Delete R333.

98 Backdating

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Index

backdating....................................................................................................................................................................89

component locator .......................................................................................................................................................83

constant current (cc) tests ............................................................................................................................................15

constant voltage tests ...................................................................................................................................................13

current monitoring .......................................................................................................................................................12

disassembly

bias board .............................................................................................................................................................57

cover.....................................................................................................................................................................56

fan.........................................................................................................................................................................56

front panel.............................................................................................................................................................57

front panel board ..................................................................................................................................................57

modules ................................................................................................................................................................56

power board..........................................................................................................................................................57

documents - related........................................................................................................................................................8

electrostatic discharge....................................................................................................................................................9

equipment ......................................................................................................................................................................9

initialization.................................................................................................................................................................51

installing

bias board .............................................................................................................................................................59

cover.....................................................................................................................................................................59

fan.........................................................................................................................................................................59

front panel board ..................................................................................................................................................59

power board..........................................................................................................................................................58

mainframe......................................................................................................................................................................7

parts

Bias board - electrical...........................................................................................................................................79

Front Panel board - electrical ...............................................................................................................................79

mechanical............................................................................................................................................................80

output connector...................................................................................................................................................81

Power board - electrical...............................................................................................................................................68

Index 99

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performance tests.........................................................................................................................................................11

programming values - modules....................................................................................................................................12

revision number .............................................................................................................................................................8

run-time error message ................................................................................................................................................26

S3 switch settings.........................................................................................................................................................49

schematic

notes .....................................................................................................................................................................84

schematics....................................................................................................................................................................83

bias board .............................................................................................................................................................83

connector board....................................................................................................................................................83

front panel board ..................................................................................................................................................83

power board..........................................................................................................................................................83

relay board............................................................................................................................................................83

selftest failure ..............................................................................................................................................................26

serial number .................................................................................................................................................................8

service manual ...............................................................................................................................................................8

shock hazard ................................................................................................................................................................25

switch setting waveforms.............................................................................................................................................50

test points.....................................................................................................................................................................48

test record - 66101A....................................................................................................................................................18

test record - 66102A....................................................................................................................................................19

test record - 66103A....................................................................................................................................................20

test record - 66104A....................................................................................................................................................21

test record - 66105A....................................................................................................................................................22

test record - 66106A....................................................................................................................................................23

theory...........................................................................................................................................................................61

ac input .................................................................................................................................................................61

bias supplies .........................................................................................................................................................61

CC DAC ...............................................................................................................................................................61

CCPROG*............................................................................................................................................................62

CV DAC...............................................................................................................................................................61

CVPROG*............................................................................................................................................................62

downprogrammer..................................................................................................................................................64

FETS ....................................................................................................................................................................64

IMON .............................................................................................................................................................63, 64

isolation transformer.............................................................................................................................................64

microprocessor .....................................................................................................................................................61

OR Gates ..............................................................................................................................................................63

OV comparator.....................................................................................................................................................65

readback multiplexer ............................................................................................................................................64

turn-on ..................................................................................................................................................................61

VCNTRL..............................................................................................................................................................63

VMON............................................................................................................................................................63, 64

tools ...............................................................................................................................................................................9

troubleshooting............................................................................................................................................................25

cc accuracy ...........................................................................................................................................................43

100 Index

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cv accuracy...........................................................................................................................................................42

DAC .....................................................................................................................................................................45

downprogrammer..................................................................................................................................................44

error messages ......................................................................................................................................................32

flowcharts .............................................................................................................................................................25

high output............................................................................................................................................................40

microprocessor .....................................................................................................................................................30

no output...............................................................................................................................................................35

no overvoltage ......................................................................................................................................................27

overall...................................................................................................................................................................27

overvoltage...........................................................................................................................................................33

readback ...............................................................................................................................................................46

Troubleshooting

EEPROM..............................................................................................................................................................51

verification tests...........................................................................................................................................................11

Index 101

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