Agilent 83711A Service Manual

Notice

Hewlett-Packard to Agilent Technologies Transition

This documentation supports a product that previously shipped under the Hewlett­Packard company brand name. The brand name has now been changed to Agilent
Technologies. The two products are functionally identical, only our name has changed. The
document still includes references to Hewlett-Packard products, some of which have been
transitioned to Agilent Technologies.

Printed in USA March 2000

Contacting Agilent

By internet, phone, or fax, get assistance with all your test and measurement needs.

Table 1-1 Contacting Agilent

Online assistance: www.agilent.com/find/assist
United States

(tel) 1 800 452 4844

New Zealand

(tel) 0 800 738 378
(fax) ([phone]

Latin America

(tel) [phone]
(fax) [phone]

Japan

(tel) ([phone]
(fax) ([phone]

Canada

(tel) 1 877 894 4414
(fax) [phone]

Australia

(tel) 1 800 629 485
(fax) ([phone]

Asia Call Center Numbers

Country Phone Number Fax Number

Singapore 1-800-375-8100 (65) 836-0252
Malaysia 1-800-828-848 1-800-801664
Philippines (632) 8426802

1-800-16510170 (PLDT
Subscriber Only)

Thailand [phone] (outside Bangkok)

[phone] (within Bangkok)
Hong Kong 800-930-871 (852) 2506 9233
Taiwan 0800-047-866 (886) 2 25456723
People’s Republic

of China

800-810-0189 (preferred)

10800-650-0021

(632) 8426809
1-800-16510288 (PLDT
Subscriber Only)

(66) 1-661-3714

10800-650-0121

Europe

(tel) ([phone]
(fax) ([phone]

India 1-600-11-2929 000-800-650-1101

Service Guide

This

HP

manual

83711A/12A

Synthesized

SERIAL

applies

directly

to

instruments

and

CW

NUMBERS

with

HP

Generators

serial number

83711B/12B

prex US3449

and

above

.

ABCDE

HP Part No. 83711-90134

Printed in USA July 1997 Supersedes April 1995

Notice.

The

information contained

in this

document

is

subject

to

change

without

notice

.

Hewlett-P

but

purpose

ackard makes

not limited

.

Hewlett-P

consequential

to,

the implied

ackard

damages

no warranty

warranties

shall

not

in

connection

be

of

liable

with

any

kind

of

merchantability

for

errors

the

furnishing,

with

regard

to

and

contained

performance

this

tness

herein

material,

for

or

for

,

or

use

including

a

particular

incidental

of

this

or

material.

c



Copyright Hewlett-Packard Company 1995, 1997

All Rights Reserved. Reproduction, adaptation, or translation without prior written permission

is prohibited, except as allowed under the copyright laws.

1400 Fountaingrove Parkway, Santa Rosa CA, 95403-1799, USA

Introduction

The

HP

83711A/12A

ranges

.

The

HP

83711A/11B

a

frequency

The

service

comes

The

HP

information

HP

83711B/12B

range

information

in

two

manuals

83711A/12A

needed

,

HP

Component-Level

individual

(CLIP

parts

s)

list,

for

instrument

selected

and

illustrations

and

HP

of

10

MHz

for

the

.

and

HP

to

repair

83731A/32A

Information

assemblies

assemblies.

for component

83711B/12B

has

a

frequency

to

20

GHz.

HP

83711A/12A

83711B/12B

the

synthesizer

and

HP

manual

.

The manual

Each CLIP

synthesized CW

range of

and

Synthesized

to

the

83731B/32B

provides

component-level

generators have

1to

HP

83711B/12B

CW

assembly level.

Synthesized Signal

contains Component-Level

contains component-level

location by

reference designator

dierent frequency

20 GHz,

and the

synthesized CW

Generators Service

The

HP

Generators

information

Information P

schematics,

.

HP 83712A/12B

generators

Guide

provides

83711A/12A,

for

the

repair of

ackets

a

component

has

Calibration

HP

83731B/32B

contains

The

the

service

information

Synthesized

performance

guide

is

what

is

in

the

Signal

tests

you

HP

83711A/12A, HP

Generators

and

adjustments

receive

when

Calibration

for

you

order

83711B/12B,

Guide

the

synthesizer

Option

HP 83731A/32A

.

The calibration

.

OBW

,

service

and

guide

documentation.

iii

In

The

This

service

Guide

guide

includes

the

following

chapters:

Chapter

failed

Chapter

1

major

2

,

,

83711A/12A

Chapter

3

,

assemblies

Chapter

4

,

instrument.

Chapter

major

Chapter

been

Chapter

5

,

assembly

6

,

made

7

,

generated

followed

Chapter

to recover

8

,

synthesizers

Chapter

as

Chapter

updates

etc

how

.

9

,

to

package

10

,

operating

\Troubleshooting,"

assembly

\Block

and

\Major

and

\P

arts

\Assembly

Diagrams

HP

Assembly

cable

List,"

.

83731B/32B

locations

contains

Replacement," contains

.

\P

ost-Repair Procedures

.

\Error

during

\Options

Messages

use

of

from

,"

contains

the

the

.

\Contacting

\Legal

and

and

Hewlett-P

ship

Regulatory

environment,

contains

,"

contains the

.

and

Cable

.

information

," contains

,"

contains

instrument.

error

condition.

a

description

ackard,"

the

instrument.

Information,"

storage

the

troubleshooting

block diagram

Locations

needed to

information needed

the procedures

a

list

of

all

Each

entry

of

the

provides

environment,

," contains

order assemblies

of

the

error

in

the

various

information

contains

ESD

information

that is

to be

drawings that

to remove

to be

messages

list

contains

options

on

the

information

precautions

needed to

used

and parts

followed

that

a

sequence

available

how

to

about

,

safety

isolate a

for

the

show the

or replace

after

a

might

be

that

for

use with

contact

HP

manual

considerations,

HP

major

for the

repair

can

as

a

has

be

the

well

Assumptions

The procedures

service task.

containing the

in this

To

nd what

task.

iv

About

guide

tools

Y

ou

assume

and

that

you

equipment

have

belong

the

tools

to

each

and

equipment

service

task,

to

perform

refer

to

the

each

chapter

Contents

1. Troubleshooting

Introduction .

Prior to

Safety Considerations

W

arnings

Before

After-Service

ESD

Recommended

Service A

TORX

Pozidrive

Hardware .

Major Assemblies

Test

Service

Other

Cleaning

Cleaning

Cleaning

12-Month

After

Main

Microprocessor

LO

YO Loop and Oset Synthesizer Assembly (A7) Troubleshooting . . . . . . . .

YIG Driver

ALC Assembly (A10) Troubleshooting . . . . . . . . . . . . . . . . . . . . 1-25

Beginning Troubleshooting

The Service

Power

ABUS

0.5

Data

ABUS

Oscillator Cold Error . . . . . . . . . . .

LO Synthesizer and Reference Unlocked/Divide V

Data Readback Errors

ABUS

Oset

Data Readback Errors

ABUS Errors ...... ...... ...... ..... ...... . 1-20

MSB Errors ...... ...... ...... ...... ..... .. 1-21

Low/High Band Voltage Errors ...................... 1-23

Data Readback Errors .... ...... ...... ...... .... 1-25

ABUS Error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-25

DAC Errors ............................... 1-26

Supply V

Applying

Precautions

ccessories

R



Screwdrivers .

P

oint

Aids

Service

.

Intervals

Solution

Repair

Troubleshooting

Errors

V/GHz

Synthesizer

Readback Errors

Errors

Error........................

Synthesizer Incorrect Frequency/Unlocked Errors . . . . . . . . . .

.

.

.

.

.

.

.

.

.

.

.

.

.

Position

and

Cautions

P

Safety

.

T

est

Screwdrivers

.

.

,

Locations

on

Printed

Documents

.

.

.

Cleaning

Calibration

Assembly

Output

and

Assembly (A9) Troubleshooting

.

.

.

.

.

erication

..

ower

Checks

.

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Equipment

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P

arts

,

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Errors .

Reference Assembly

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and

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Circuit

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Boards

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(A3)

Troubleshooting

.

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.... ...... ...... ......

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Locations

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(A6) Troubleshooting

..

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...... ...... ....

oltage Errors

...... ...... .....

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..

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. 1-4

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. 1-10

.

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..

. 1-11

.

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. 1-13

....

1-1

1-1

1-1

1-1

1-2

1-2

1-2

1-3

1-3

1-3

1-4

1-4

1-4

1-4

1-4

1-5

1-5

1-5

1-5

1-5

1-5

1-6

1-7

1-9

1-9

1-11

1-11

1-12

1-16

1-16

1-17

1-18

1-20

1-20

Contents-1

Integrator

Integrator

Leveled

Leveled

RF/Reference

Input/Output

Input/Output

Track

Track

Output

Combiner/High

SLPF

A

Input/Output

Y

O

Loop

Sampler

LO

Unlocked

Oset

Y

O

Loop

SLPF

A

Unleveled

Unleveled

Divider

Symptom

Checking

Checking

Checking

Checking

Checking

Checking

Checking

Checking

T

o

Troubleshoot

T

o

Troubleshoot

Checking

Errors .

Errors (Revision

Indicator Trip

Indicator Trip

Detector Errors

Switching Errors

Switching

and

Hold

Errors

and

Hold

Errors

Module

(A8A3)

(A8T1)

Synthesizer

(A8A3)

and

Troubleshooting

(A8A1)

Band/Low

Troubleshooting

Bias

and

Oset

Unlocked

at

at

Modulation

the

P

the

Front

the

Hewlett-P

the

Microprocessor

the

10

the

10

the

0.5V/GHz

the

Output

External ALC

Synthesizer

Troubleshooting

Errors

Troubleshooting

Minimum

Maximum

ower

P

MHz

MHz

the

the

Errors

Unlocked

Supply

..

..

..

10.01 and

Point

Errors

Point

Errors

Errors

.

(Revision

Troubleshooting

.

.

Errors

V

ernier

V

Assembly

.

anel

Display

ackard

Output .

Input

Output

P

ath

Option

Non-Option

.

(Revision

.

.

.

Band

.

.

.

.

Assembly

.

.

.

Errors

.

.

.

Errors

ernier

.

.

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.

Interface

.

.

.

..

.

.

..

..

1E1 Output

.

.

.

.

.

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Above

.

.

(Revision

..

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..

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10.01

and

.

Errors

.

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(A7)

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Errors

(A4)

Troubleshooting

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Bus

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Path

1E1 Output

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Only)

.

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10.01

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10.01

and

.

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..

Above

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(HP-IB)

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Only)

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..

Troubleshooting

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Path

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and

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Above

..

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..

1-27

1-27

1-27

.

1-27

. 1-27

. 1-29

.

1-29

.

1-29

. 1-29

. 1-30

1-30

.

1-31

.

1-31

. 1-34

.

1-41

.

1-41

.

1-42

.

1-42

.

1-50

.

1-50

.

1-51

1-52

.

1-56

.

1-57

.

1-57

.

1-58

.

1-58

.

1-59

.

1-59

.

1-60

.

1-60

.

1-60

.

1-61

.

1-62

2.

Block Diagrams

3.

Major

Introduction

4. Parts List

Introduction..........

Abbreviations . . . . . . . . . . . . . . . . . . . .

Replaceable P

Illustrated P

Ordering Information

Optional Congurations

Parts List Backdating

Parts Identication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3

Other Documentation .. ...... ...... ...... ..... ... 4-4

Exchange Assemblies . ...... ..... ...... ...... .... 4-5

Contents-2

Assembly

and

Cable

.

.

.

.

.

arts T

able F

arts Breakdowns . . . . . . . . . . . . . . . . . .

Locations

.

.

.

.

.

.

..

..

..

..

..

.... ...... ...... ...... .

ormat........ ...... .

...... ..... ...... ....

...... ...... ..... .....

.....................

..

..

.

.

.

.

.

...... ..... .

.........

...... .

...... .

.....

..... ..

.

.

.

3-1

4-1

4-1

4-1

4-2

4-2

4-3

4-3

5.

Assembly Replacement

Introduction

Assembly

Major

Service

T

ools .

Special

Safety

F

asteners

Cable

Semi-Rigid

Flexible

SMC

SMA

SMB

Multi-wire

Synthesizer

T

o

Remove

T

o

Remove

P

ower

T

o

Disconnect

T

o

Remove

Reassembly

Fuse

T

o

Remove

F

an

Assembly

T

o

Disconnect

T

o

Remove

Reassembly

Divider

T

o

A

ccess

T

o

Remove

Reassembly

Microprocessor

T

oA

ccess

T

o Disconnect

T

o Remove

Reassembly

Battery

T

o

A

ccess

To Remove the P

To Reassemble the Instrument

Crystal Oscillator (Option 1E5)

To Disconnect the Oscillator Cables

To Remove the Oscillator . . . . . . . . . . . . . . . . .

Reassembly Tips . . . . . . . . . . . . . . . . . . . . .

ALC Board Assembly (A10) . . . . . . . . . . . . . . . . . . . .

To Remove the Assembly . . . . . . . . . . . . . . . . . . . .

Reassembly Tips . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-33

YIG Driver Board Assembly (A9) .......... ...... ...... . 5-35

ToAccess the Service Position ...... ...... ...... ..... 5-35

To Remove the Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . 5-36

YO (YIG Oscillator) Loop/Oset Synthesizer Board Assembly (A7) . . . . . . . . 5-38

To Remove the Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . 5-38

Reassembly Tips . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-38

..

and P

art Locations

Assembly and

Position

..

.

T

echniques

.

.

.

.

(Screws

and

Connector

Coaxial

Coaxial

Connectors

Connectors

Connectors

Cables

Covers

the

the

Supply

.

and

(A3BT1)

(A11)

the

the

Tips

.

.

.

.

(and

.

the

the

Tips

Modulation

the

Service P

the

Tips

Board Assembly

the

Service

the

the Microprocessor

Tips .

the

Service

..

.

.

.

.

Cable Locations

..

.

.

.

.

.

.

.

.

.

.

.

.

.

.

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.

.

and

Nuts)

Identication

Cables

Cables

T

op

Bottom

P

ower

.

Replace)

.

Fan

Assembly

.

art ....

.

.

.

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.

.

Cover

.

P

ower

.

.

.

.

.

.

F

an

.

.

.

.

Cables

..

.

.

.

.

.

.

.

.

.

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.

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.

.

.

.

.

.

.

Cover

.

.

.

Supply

Supply

.

.

.

..

..

the

.

.

.

Cable

.

.

.

.

..

Board

osition .

..

.

..

P

osition

.

.

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P

osition

.

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Cables

.

.

.

.

..

.

.

Fuse

.

..

.

.

.

.

.

.

.

.

Assembly

..

..

.

(A3)

.

.

.

.

Assembly

.

.

.

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.

.

.

........................

......

........

.

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..

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(A4) .

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...... ...... .....

...... .

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..

..

.

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..

..

..

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..

..

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..

..

..

..

..

..

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.

.

.

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.

.

...... ...... ....

..............

.........

.........

......

......

.

..

.

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..

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..

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..

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.

.

.

5-1

5-7

. 5-7

.

5-7

.

5-7

.

5-9

.

5-9

.

5-9

.

5-9

.

5-10

.

5-11

.

5-11

.

5-11

.

5-11

.

5-11

.

5-13

.

5-13

.

5-15

.

5-17

.

5-17

.

5-18

.

5-19

. 5-20

.

5-20

.

5-21

.

5-21

.

5-22

5-23

.

5-23

. 5-23

. 5-23

5-24

. 5-26

.

5-26

.

5-26

5-27

.

5-27

.

5-29

.

5-29

5-29

5-30

5-31

5-31

5-31

5-32

5-33

5-33

Contents-3

LO

(Local Oscillator)

T

oA

ccess the

T

o Remove

Reassembly

Step

Attenuator,

T

o Remove

T

o

Reassemble

Sampler

T

T

YIG

T

T

YIG

T

T

Output

T

T

T

T

RF

T

T

HP-IB

T

Reassembly

Front

T

T

T

T

T

T

Reassembly

Microcircuit,

o

Remove

o

Reassemble

Oscillator(s)

o

Remove

o

Reassemble

Driver

o

Remove

o

Reassemble

Module

o

Remove

o

Remove

o

Remove

o

Reassemble

Output

o

o

o

o

o

o

o

o

o Remove

Connector/A

Remove

Reassemble

Cable

Remove

P

anel

Remove

Remove

Remove

Remove

Remove

Synthesizer/ Reference

Service

the Assembly

Tips .

A8AT1

the Assembly

the

Instrument

the

Subassembly

the

Instrument

.

.

the

P

art

the

Instrument

Cable

and

the

P

art

the

Instrument

,

SLPF

A

the

Subassemblies

the

Coupler

the

Output

the

Instrument

the

Assembly

the

Instrument

Interface

the

Assembly

Tips

.

(A1,

A2) .

the

Front

the

ALC

the

Front

the

Display

the

Keyboard

the

Dress

Tips .

P

osition

..

.

(Option

A8T1

.

.

.

.

.

T

emperature

.

.

Module

Detector

Module

dapter

Replacement

.

.

.

.

.

Panel

Cable/Connector .

Frame .

(A2) .

(A1) .

P

anel

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

1E1)

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

Transducer

.

.

.

.

.

.

.

,

and

Coupler

.

.

Subassembly

and

the

.

.

,

CP1

.

.

.

.

.

..

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

..

..

..

.

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.

.

.

.

.

.

.

Board Assembly

.

.

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.

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..

..

.

.

.

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.

.

..

..

.

.

.

.

.

Detector

.

.

.

.

.

SLPF

A

.

.

.

.

.

.

.

.

.

..

.

.

.

.

..

..

.

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..

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..

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..

.

Module

.

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.

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..

..

..

..

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..

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.

.

..

..

.

.

.

.

..

.

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..

..

.

.

..

.

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.

.

.

Subassemblies

.

.

..

.

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..

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..

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..

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(A6) .

..

..

..

..

..

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..

..

..

..

..

..

..

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..

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..

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..

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..

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.

.

.

5-40

.

5-40

.

5-41

.

5-42

5-44

.

5-44

.

5-44

.

5-46

.

5-46

.

5-48

.

5-49

.

5-49

.

5-50

.

5-53

.

5-53

.

5-54

.

5-55

.

5-55

.

5-56

.

5-58

.

5-58

.

5-60

.

5-60

.

5-62

.

5-64

.

5-64

.

5-65

.

5-66

5-66

.

5-66

.

5-68

.

5-69

.

5-69

.

5-69

.

5-71

6.

Post-Repair

Introduction

7.

Error

Introduction . . . . . . . . .

Error Messages List

Messages ...........

8. Options

Introduction......................

Electrical Options

Mechanical Options ........ ...... ...... ...... ... 8-3

Contents-4

Messages

Option 1E1 - A

Option 1E5 - Add High Stability Timebase . . . . . . . . . . . . . . . . . . 8-2

Option 1E8 - 1 Hz Frequency Resolution .................. 8-2

Option 1E9 - 3.5 mm RF Output Connector ................. 8-2

Option 1CM - Rack Mount Kit . . . . . . . . . . . . . . . . . . . . . . . . 8-3

Option 1CP - Rack Mount and Handle Kit .................. 8-3

Option 1CR - Rack Slide Kit .... ...... ...... ...... .. 8-3

Procedures

..

..

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

..

..

..

........................

...... ..

......................

dd Output Step Attenuator . . . . . . . . . . . . . . . . .

...... ...... ...... ...

.......................

...... .....

........

..

.

.

.

.

6-1

7-1

7-2

7-3

8-1

8-2

. 8-2

W

arranty Options

Option

Option

Documentation

Option

Option

Option

Option

Option

9.

Contacting

Introduction

Returning

Service

Original

Other

Sales

10.

Legal

Introduction

Safety

Before

Safety

Safety

Electrostatic

PC

T

ESD

Certication

W

arranty

Limitation

Exclusive

Assistance

W30 -

W32 -

OB0 -

OB1 -

OBV

OBW

OBX

Documentation

Hewlett-P

.

Instruments

T

ag

P

ackaging

P

ackaging

and

Service

and

Regulatory

.

Considerations

Applying

Earth

Symbols

Discharge

Board

est

Assemblies

Equipment

A

ccessories

.

.

.

of

Remedies

..

..

..

..

Two A

Three Y

Options .

Delete Operating

Extra Operating

-

-

-

.

.

.

Ground

.

.

W

.

dditional

ear

Return

..

Component-Level

Service

Component-Level

.

.

Oces

.

and

.

..

arranty

.

Documentation

.

.

.

ackard

.

.

.

.

for

Service

.

.

.

.

.

.

.

.

.

.

.

.

Information

.

.

.

.

.

.

P

ower

.

.

Notes

.

.

and

.

..

.

.

.

..

.

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Electronic

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Y

ears

Return-to-HP

to

HP

Calibration

.

.

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Documentation

Documentation

Information

.

Information

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P

acket

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P

acket

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Service

Service

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(CLIP)/Service

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. 8-3

. 8-3

. 8-3

. 8-4

8-4

8-4

8-4

.

8-4

.

8-4

.

9-1

.

9-2

.

9-2

.

9-2

.

9-2

.

9-3

.

10-1

.

10-2

.

10-2

.

10-2

.

10-3

.

10-4

.

10-4

.

10-5

.

10-5

.

10-6

.

10-6

. 10-6

.

10-6

.

10-6

Index

Contents-5

Figures

2. HP

3-1. Major

3-2. Major

3-3. Cable

3-4. Cable

4-1. Major

4-2. Major

4-3. Cable

4-4.

4-5.

4-6.

4-7. T

4-8. Front

4-9.

4-10.

4-11.

4-12.

4-13.

4-14.

4-15.

4-16.

5-1.

5-2.

5-3.

5-4.

5-5.

5-6.

5-7.

5-8.

5-9.

5-10.

5-11. F

5-12. F

5-13. Divider and Modulation Board Assembly Removal

5-14. Microprocessor Board Assembly Cable Location

5-15. Microprocessor Board Assembly Removal

5-16. Microprocessor Board Battery Removal

5-17. Crystal Oscillator Cables

5-18. Crystal Oscillator Removal

5-19. ALC Board Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-34

5-20. YIG Driver Board Service Position ..................... 5-35

5-21. YIG Driver Board Removal . . . . . . . . . . . . . . . . . . . . . . . . . 5-37

5-22. YO Loop and Oset Synthesizer Board Removal ...... ...... ... 5-39

5-23. LO Synthesizer and Reference Board Service Position .... ...... .. 5-41

5-24. LO Synthesizer and Reference Board Removal . . . . . . . . . . . . . . . . 5-43

5-25. Step Attenuator Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-45

83731A/B,

Assemblies {

Assemblies {

Assemblies {

Assemblies {

Assemblies

Assemblies

Assemblies

Cable

Assemblies

Figures

Figures

op and

Front

Front

T

op Side

F

an,

YIG,

Attenuator

Microwave

Microwave

Location

Location

Cable

Cable

T

op

Service

Service

P

ower

P

ower

Line

an Cable Location

an Assembly Removal .

Orientation

Orientation

Panel

Frame and

Dress P

P

ower

Crystal

Locations{T

Locations{Bottom

or

Bottom

P

P

Supply

Supply

Fuse

HP

83732A/B

T

Bottom

Top

Bottom View

Location

Location

Location

Location

Diagram,

Diagram,

Bottom Cover

Illustrated P

Display/Keyboard Illustrated

anel Illustrated

Circuit Board

Supply

,

Output

Deck

of

Major

of

Major

osition{T

osition{Bottom

Removal

,

and

Oscillator

Bottom

Side

and

Illustrated

Assemblies{T

Assemblies{Bottom

op

Cover

op

Cables

Screws

and

Overall

op

View

View

View

Diagram

Diagram

Diagram

Diagram

T

Bottom

Illustrated

arts Breakdown

P

Illustrated

Rear

P

,

and

Sampler

Circuit

SLPF

A

P

arts

View

Removal

Cover

................

.

View

Removed

Cover

.

.

..

..

..

Replacement

.........................

...............

................

Block

.

.

.

.

.

.

.

.

.

.

.

.

(T

op

(Bottom

(T

op

(Bottom

op

View

View

P

arts

arts

Breakdown

P

arts

anel

Connector

Microcircuit

Board,

Illustrated

Breakdown

op

View

.

.

.

.

.

.

.

.

.

.

Removed

..

..

..

..

Diagram

.

.

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.

.

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.

.

.

.

.

.

View)

View)

View)

View)

.

.

.

.

Breakdown

.

.

Breakdown

and

Rails

P

arts

.

.

.

View

.

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..

..

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..

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...

....

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F

oldout

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P

arts

Breakdown

.

.

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.

Illustrated

Illustrated

Illustrated

Breakdown

.

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..

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............

..............

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.............

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...... ...... ...

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P

arts

Breakdown

P

arts

Breakdown

P

arts

Breakdown

.

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...... .....

...... ...

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.

. 3-3

..

. 3-5

..

..

..

.

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.

.

.

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.

. 4-20

.

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.

. 5-18

..

.

.

. 5-22

2-3

3-2

3-4

4-8

4-10

4-12

4-14

4-15

4-16

4-18

4-22

4-24

4-26

4-28

4-30

4-32

4-34

4-36

5-3

5-4

5-5

5-6

5-12

5-14

5-16

5-19

5-20

5-21

5-25

5-27

5-28

5-30

5-31

5-32

Contents-6

5-26.

Sampler Removal

5-27.

YIG Oscillator

5-28.

Output Module

5-29.

Output Module

5-30.

RF Output

5-31.

RF Output

5-32.

HP-IB

5-33.

Front

5-34.

Front

5-35.

Display

5-36.

Dress

10-1.

Static-Safe

..

..

..

Removal .

, SLPF

, SLPF

A

Module

A

Module

.

.

Connector Removal{Standard

Connector Removal{Option

Cable

P

anel

Frame

and

P

anel

Removal

and

BNC

Removal

Keyboard

Removal

W

orkstation

.

.

.

Connector

.

.

.

Removal

.

.

.

.

.

.

.

.

.

.

.

.

,

and

,

and

.

.

.

Removal

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

Coupler

Coupler

1E1

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

Detector

Detector

.

.

.

.

.

.

.

.

.

.

.

.

.

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.

.

.

.

.

.

..

.

.

..

.

.

.

.

..

.

.

.

.

.

.

..

..

.

..

..

..

..

Removal

Separation

.

.

.

.

.

.

.

.

.

..

..

.

.

.

..

..

..

.

.

.

..

..

..

..

.

.

..

..

.

.

.

.

..

..

..

..

.

.

.

.

..

.

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.

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..

..

.

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.

.

.

..

.

..

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.

..

.

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..

.

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.

..

..

..

.

.

..

..

.

.

..

.

.

.

.

.

.

.

.

..

.

..

.

. 5-57

. 5-61

. 5-62

.

.

.

.

.

.

.

.

.

.

.

.

5-46

5-51

5-56

5-64

5-67

5-68

5-70

5-71

10-4

Contents-7

T

ables

1-1. Recommended

1-2. YIG

1-5. A2J1

4-1. P

4-2. Reference

4-3. Abbreviations

4-4. Multipliers

4-5.

4-6.

4-7.

4-8.

4-9.

5-1. T

5-2. F

9-1. Hewlett-P

Continuity

V

oltages

art Numbers

Major

Major

Cable

Cable

Illustrated

Assemblies

Assemblies

Assemblies

Assemblies

ools .

astener T

.

Designations .

Replaceable

.

orque

ackard

Test

.

for

..

..

.

.

V

Equipment .

.

.

.

.

.

.

.

.

Exchange

.

.

.

.

.

.

.

,

T

op

View

,

Bottom

,

T

op

View

,

Bottom

P

arts .

.

.

.

.

alues

.

Sales

and

.

.

.

.

.

.

.

.

Assemblies

.

.

.

.

.

.

.

.

.

.

.

.

.

View

.

.

.

View

.

..

.

.

.

.

.

.

.

.

Service

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

..

.

.

.

.

Oces

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

..

. 1-6

.

.

.

.

.

.

.

.

..

..

..

.

.

.

.

.

.

1-39

.

.

.

.

.

.

..

..

..

.

.

.

.

.

.

.

.

1-57

.

.

.

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.

.

.

.

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.

.

.

..

..

. 4-5

.

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..

..

..

..

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..

..

..

..

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..

..

..

..

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..

..

..

..

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..

..

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..

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..

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..

..

..

..

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.

.

..

4-6

.

4-6

.

4-7

.

4-8

.

4-9

.

4-11

.

4-13

.

4-17

.

5-8

.

5-9

9-4

Contents-8

Troubleshooting

Introduction

This

chapter

Always

start

of

on

the

detected

can

have

procedures

These

procedures

contains

begin

troubleshooting

the

main troubleshooting

error

messages returned

error

condition.

an

eect on

at the

end of

are

troubleshooting procedures

These procedures

the detected

this

referenced

by following

procedure,

by the

self test

error.

chapter

veries

by

symptom.

that isolate

the procedure

run the

synthesizer internal

routine,

are self-contained

If the

self

test

circuits

that

problems to

titled \Main

follow

the

and also

does

not

are

not

the

assembly

Troubleshooting." At

self

test.

procedures

that

verify the

detect

checked

any

errors

with

the

level.

Depending

verify

inputs

,

a

self

set

the

that

of

tests

1

the

.

Prior

The

to

Beginning

following

paragraphs

troubleshooting.

troubleshooting.

The

Service

T

o

access

in

the

service

instructions

grouped

install

P

ower

an

Supply

Occasionally

specication

On

the end

LEDs

. When

o,

the

many

on

by

assembly

assembly

,an

on the

of the

an LED

supply

P

position.

Troubleshooting

present

This

information

osition

of

the

measurement

Refer

how

to

install

.

The

individual

in

the

service

V

erication

apparent failure

power supply

power supply

is on,

that supply

has

failed

or

the

information

is

to

procedures

a

given

position.

on

assembly.

facing

supply

that

important

points

assembly

on

in

to

an

Chapter

in

troubleshooting

an

assembly

the

front

of

is operating

is

being

loaded

must

be

know

regardless

assembly

the

,

5,

\Assembly

service

procedures note

might

be

the

synthesizer

within

caused

its

down

understood

of

the

assembly

position.

by

,

there

specied

by

one

of

prior

to

beginning

the

path

taken

must be

Replacement,"

These

when it

a

voltage

procedures

is

are

seven

tolerance

the

assemblies

necessary

that

.

by

the

installed

for

is

out

green

If

the

.

are

of

LED

to

is

Troubleshooting 1-1

Troubleshooting

Safety

W

arnings

P

ay

attention

avoid

damage

Before

Caution

Warning

Considerations

and

Cautions

to

W

ARNINGS

to

the

equipment.

Applying P

V

and

must

terminals

erify

that

that

be

ower

the

the

provided

or

Maintenance

instrument

should

of

the

be

hazards

maintenance

should

Any

outside

will

be

interruption of

the instrument)

cause a

(Grounding

protection.)

this

instrument

and CA

UTIONS. They

instrument

correct

power

fuse

from

cable

the

described

and

with

performed

involved

can

be

removed.

potential

one conductor

In

addition, verify

and

is

set

to

is

installed.

main

power

.

herein

protective

only

by

service-trained

(for

example,

performed

the

protective

or

disconnecting

shock

hazard

of

the

test

equipment

must be

match

An

is

performed

covers

without

a

two

that

followed for

the

available

uninterrupted

source

to

the

with power

removed.

personnel

re and

power supplied,

(grounding)

the

that

could

conductor

a

common

prior

your protection

line

(mains)

safety

instrument

earth

input

supplied to

Such

maintenance

who

electrical shock).

the power

conductor

protective

result

outlet

ground

to

energizing

earth

in

personal

is

not

exists

(inside

sucient

either

and to

voltage

ground

wiring

are

aware

Where

or

terminal

injury

between

unit.

the

.

Whenever

instrument

unintended

If

this

reduction)

(that

Servicing

avoid

qualied

Energy

it

is

must

operation.

instrument

make

is

,

the

grounded

instructions

dangerous

to

do so

available

likely

be

is

sure

electric

.

at

that

made

to

be

that

side

are

many

the

protection

inoperative

energized

the

common

of

the

mains

for

use

shock,

points

do

may

has

and

be

via

an

autotransformer

terminal

supply).

by

service-trained

not

perform

,

if

contacted,

been

impaired,

secured

is

connected

any

against

personnel

servicing

result

in

the

any

(for voltage

to

unless

personal

injury.

Capacitors inside the instrument may still be charged even if the

instrument has

For continued

only with 250 V

normal blow

circuited fuse holders

been disconnected from its source of supply

.

protection against re hazard, replace the line fuse(s)

fuse(s) of the same current rating and type (for example

, time

delay, etc.). Do not use repaired fuses or short

.

neutral

only

.

T

o

1-2 Troubleshooting

Troubleshooting

Caution

After-Service

Visually

heat,

of

Using

pin

while

Check

Check

the

acceptable

Check

inspect the

such as

discolored printed

arcing. Determine

a suitable

on the

on/o

power

making

any

indicated

the

resistance

switch in

this

resistance

the

line

fuse

Unplug the

boards

the

power

There

be

damaged

straps

sockets

contain

is

are

several

when

.

instrument

by

servicing

Safety Checks

interior of

the instrument

and remedy

ohmmeter

cord

,

plug.

check

The

measurement

rear-panel

from

the

instrument

the ON

to verify

(

j

) position

is

two

megohms.

that a

before

devices

that

on.

components

electrostatic

sensitive

circuit boards

the cause

the

resistance

reading

to

determine

ground

must

terminals

and

Replace any

correctly

disconnecting

can

including

discharge

components

for

or

components

of

any

from

be

whether

that

enclosure

the

power

rated

be

damaged

.

any

signs

such

condition.

the

less

than

intermittent

are

to

line

source

component

fuse

is

or

removing

if

the

MOS

and

CMOS devices

Use

conductive foam

.

Carefully

of

abnormal

,

damaged

instrument

one

ohm.

discontinuities

marked,

and

using

neutral (tied

disconnected.

that

installed.

board is

unplug

internally

insulation,

enclosure

Flex

the

the

results

any

boards

.

removed when

that can

and grounding

ICs

in high-grip

generated

or

evidence

to

the

ground

power

cable

exist.

above

procedures

together) with

The

minimum

in

a

failure

.

Some

.

ESD

There

damaged

container

wrist strap

Precautions

are

several components

by

electrostatic discharge

whenever

. Refer

it is

to Chapter

including MOS,

(ESD). A

not installed.

10, \Legal

Use

and

CMOS,

sensitive

a

static

Regulatory

and

assembly

free

work

Information,"

microwave

should

area

and

devices

be

stored

a

properly

for

more

that

information.

Recommended

T

est

Equipment

Test equipment and accessories required to maintain the instrument are listed in

\Recommended T

critical specications listed in the table

est Equipment." Equipment other than that listed may be used if it meets the

.

can

be

in

an

antistatic

grounded

detailed

Table 1-1,

Troubleshooting 1-3

Troubleshooting

Service

R

TORX

Most

screwdriver

number



Screwdrivers

of

the

.

of

the

screwdriver

Pozidrive

Some screws

the screw

Pozidrive

head slots

is

Hardware

The

instrument

are

dened

National

Major

The

locations

for

selected

the

accompanying

in

nut,

Assemblies

Synthesized

the

Component-Level

and

schematic

A

ccessories

screws

is

The

#15

HP

in

the

part

number

R



TORX

8710-1617.

synthesizer

Screwdrivers

in the

HP

instrument

Signal

instrument appear

,P

ozidrive

8710-0899

has

a

mixture

Industrial

or

a

metric

,

P

of

individual

assemblies

HP

83711A/12A,

Generators

.

F

asteners

nut

arts

Information

for

that

specied assembly

are

of

the

#10

screwdriver

screwdrivers

The

part

number

of

Unied

publication

with

a Unied

,

and

Cable

components

.

The

HP

Component-Level

manual

R



TORX

R



TORX

is

HP

8710-1622.

to

be

Phillips

should

of

the

National

(IFI

National screw

Locations

mounted

information

83711B/12B

contains

.

screws

.

Remove

screwdriver

The

type

,

but

be

used.

No

.

2

P

ozidrive

(inch)

on

500).

printed

for

,

HP

and

Do

these

83731A/32A

Information

the

parts

these

screws

is

HP

8710-1623.

part

number

are

not.

T

o

The

part

number

is

HP

metric

not

use

screws

a

metric

because thread

circuit boards

assemblies

and

manual.

list,

Each

component-location

with

a

The

part

of

the

#25

TORX

avoid

damage

of

the

No

8710-0900

.

The

screw

damage

.

metric

in

will

a

are available

is provided

in

HP 83731B/32B

tabbed

section

diagram,

TORX



to

.

1

screws

Unied

occur

in

R



.

R

The

part

reference

example

information,

Chassis and

,

A6R9

see

frame

parts breakdowns

The procedures

Figures 3-1

gures are

Test P

to 3-4

located in

oint Locations

designation

is

R9 on

the parts

parts

in

Chapter

in this

show

the A6

list in

,

as

well

4.

chapter

where

Chapter 3.

is the

assembly designation

assembly

.

F

or

specic

the Component-Level

as

mechanical

reference

the

assemblies

cables

parts

and

and

component

Information P

and

cables

assemblies

cables

are

plus

located

the

descriptions

(W),

by

Most test points are indicated on the actual circuit-board assemblies

points called out in the troubleshooting procedures are shown

on the component-location

diagrams in the Component-Level Information manual.

part

designation.

and

acket

for

that

are

identied

their

reference

in

the

synthesizer

.T

est and measurement

designator

F

or

ordering

board.

in

illustrated

.

The

.

1-4 Troubleshooting

Troubleshooting

Service

Service

Aids

aids

designations

Other

Service

Service Documents

notes

information,

Cleaning

Cleaning

W

arning

Caution

on

Printed

on

printed

,

and

assembly

and

other service

contact

your

Intervals

Before

source

In

procedures

blower

throughout

circuit

part

nearest

cleaning,

.

This

or

compressed

the

Circuit

boards

include

numbers

literature are

Hewlett-P

make

is

to

eliminate

that

call

air

instrument.

Boards

test

.

available through

ackard oce

sure

the

the

for a

vacuum cleaner

.

Doing

points

,

indicator

.

instrument

possibility

so

will

cause

lights

, some

Hewlett-Packard.

is

disconnected

of

electrical

to

remove

the

dust

dust,

to

be

reference

F

or

from

shock.

do

not

transferred

further

the

use

a

power

Hewlett-P

instrument.

The

Cleaning

Hewlett-P

board

solution

the

solution

you

ackard

But,

instrument

Solution

ackard

edge

connectors

(NH4OH,

use

of

gloves

of

isopropyl

do

not

want

recommends

cleaning

should

be

recommends

.

F

or

29.5%

,

eye

NH3

goggles

alcohol

to

use

ammonium

a

12-month

intervals

cleaned

using

best

by

,

and

and

interval

are

more

either

cleaning

weight).

mostly

often

if

of

two

results

But,

dependent

a

proper ventilation.

water

hydroxide

(IP

A/H

O).

2

.

between

upon

it

is

in

a

dusty

cleaning

,

we

recommend

concentrated

The second

This

should

cleaning

where

or

solutions

an

solution

serve

for

some

parts

the

instrument

very

humid

on

printed

ammonium

of

area.

circuit

hydroxide

ammonia

recommendation is

as

a

satisfactory

of

the

is

used.

(PC)

requires

an

80:20

cleaner

12-Month Cleaning

At 12-month intervals the instrument covers should be removed to gain access to the cooling

fan.

Wipe the instrument fan with a clean cloth or tissue

Remove each printed circuit board, and clean the component side of

compressed air

. Set the air pressure to 20 psi maximum. T

, or vacuum for dust.

the board with

o remove the boards

, refer to

Chapter 5, \Assembly Replacement." Return the boards to the instrument.

After cleaning, reinstall the covers.

if

Troubleshooting 1-5

Troubleshooting

After

Once

the

Generators

and

The

Repair

the

synthesizer

HP

83711A/12A,

Calibration

adjustments

following

table

troubleshooting.

Equipment Critical

Frequency

Counter

Function

Generator

Multimeter No

Oscilloscope HP

P

ower

Meter

Calibration

is

repaired,

HP

83711B/12B

Guide

.

Chapter

6,

contains

T

Frequency

Frequency:

Amplitude:

A

Frequency

it

to

determine

\P

ost-Repair

the

list

able

1-1.

substitute

ccuracy:

may be

,

necessary to

HP

83731A/32A

when

Procedures

of recommended

Recommended

Specications

Range:

100

0

0.02

range: 100

to

kHz

5

dB

1

to

Vp-p

20

MHz

calibrate the

and HP

it

is

necessary to

," should

test equipment

T

est

Equipment

GHz

instrument. Refer

83731B/32B Synthesized

use the

be referred

that can

performance tests

to as

well.

be used

Recommended

Model

HP

5343A

HP

3325A

HP

3458A

54111D

HP

437B

to

Signal

for

P

ower

Sensor

P

ower Supply

Signal

Generator

Spectrum

Analyzer

P

ower

Meter

Range:

0

10

Frequency

Amplitude:

compatible

V

to

+10

Range:

0

10

dBm

1

V

MHz

to

to

+10

25

dBm

MHz

HP

HP

HP

HP

8482A

6235A

8663A

8566B

1-6 Troubleshooting

Troubleshooting

Main

1. Run

Troubleshooting

the

a.

Press

b.

Press

c.

T

erminate

When

4

SPCL

on

the

synthesizer

run.

Pressing

As

the

self

appear

passed

If

momentarily

the

the

the

troubleshooting

a

failed.

If

continue

on

the

self

4

MSG

self

display

unique number

The self

no

failure

instrument

the

4

SPCL

5

on

4

the

5

the

5

5

,

,

4

5

any

test

is

the

display

will

appear

test

does

,

and

5

key

,

and

test,

and

,

be

prepared

purposes.

. \Y"

test aborts

is detected,

.

If

a failure

self

5

key

.

numeric

entry

5

(ENTER)

4

Hz

display

key

other

running,

.

on

detect

then

a

message

\XX"

is the

is detected,

test.

keypad.

by

pressing

is

pressed,

.

Pressing

than

the

messages

If

the

self

test

the

display

a

failure,

the

self

test

will

be displayed

represents

to

write

down

\X" references

hexadecimal sum

upon completion

go to

the

continue

5

(ENTER)

4

Hz

the

5

(ENTER)

4

Hz

5

will

4

Hz

PRESETTING

does

.

the display

will stop

the

failed

the

procedure

text

cause

not

.At

group

error

atest

of

of a

entitled

with

SELF

will

the

self

detect a

will show

this point,

in the

. Rerun

code

group

all

test

the

next

form of

test

group

\Symptom

TEST?,

then

test

INSTRUMENT

failure,

numbers in

\X

=

.

Each

numbers

step

PRESS

cause

not

the message

the

MSG

\40XX". \40"

the self

Y",

as

test

that

reports

.

ENTER

all

self

to

run.

and

SELF TESTING!

the

LED

test.

this

will

within

within

Troubleshooting"

test

segments

Self Test

form

will

represents

As

you

be

a

test

a

test

test

failures

will

\X

be

monitor

used

group

group

lit.

to

be

=

for

.

shown

to

will

Y"

Press

is

given

that

be

2.

Decode

by

Note

a.

b.

c. T

d. Continue this subtraction process until the result is zero

the

numerical

the

result.

It is

information.

resultant

from

Search through

the

procedures on

(\X"

in

\X

=

F

or

example

the

tables in

If

the

lists included in the procedure

number does not

o decode

largest number that can be

example,if22=fc

number from the list of \22

errors is 22 = 80 and the result of the subtraction leaves 7c

when fully decoded, will yield 22 = 80, 22 = 40, 22 = 20, 22 = 10, 22 = 8, and 22 = 4.

,

the following

second

the error display

self

test

result

to

not

necessary

error

LO

Assembly").

the tables

the following

Y").

if

22

=

fc

number

of

match, it must be decoded.

is displayed, subtract 80 from fc (80 is the largest hexadecimal

to

decode

F

or

example

text

for

all

titled \Error

pages to

is

displayed

procedures

the

error

display

, that is the only error message reported. If the second

, nd the number in the list of error messages that is the

subtracted from the displayed number and subtract it. F

= Y" errors that can be subtracted from fc). One of the

determine

the

,

if

multiple

error

Groups

nd

as

the

and

matches

the

error

messages

errors

numbers

Covered"

the

result

nd

the

component

in

would

rst

number

of

running

error

any

of

.F

error

if

doing

error

group

be

identical

that

are

of

the

self

messages

the

error

.

or example

messages

so

provides

8

(\Data

at

the

the

error

test,

that

numbers

, the result

are

beginning

search through

begin

indicated

no

further

decoded,

Readback

display

with

in

the

22 = fc

the

of

22.

error

or

,

If the message returned was 36 = 550, 550 would have to be decoded in order to

determine the failure conditions.To decode 36 = 550, review the list of codes for table

36. Find the largest number from the list that can be subtracted from 550. In table 36,

this number would be 400. 36 = 400 is one of the tests that failed. Take the remainder

from the rst subtraction and once again subtract the largest number from the list that is

Troubleshooting 1-7

Troubleshooting

smaller

to

determine each

550

0

150

0

50

0

40

10

0

10

These

1.65,

2.75,

3.

Carry

out

troubleshooting.

than the

400

=150.

100

=50.

=10.

=

0.

codes

4.8,

the

procedure

remainder.

test that

Unleveled

Unleveled

Unleveled at

Unleveled

indicate

and

8.0

Begin

at

that

that

the

Continue with

failed.

at

at

4.8

2.75

at

1.65

this

instrument

GHz.

follows

procedure

8.0

GHz.

GHz.

GHz.

the

GHz.

this process

failed

applicable

appropriate

4

tests

list

for

of

the

until

in

table

error

messages

the

remainder

36.

It

messages

reported.

was

and

is

0

in

unleveled

continue

order

at

1-8 Troubleshooting

Troubleshooting

Microprocessor

The

following

Note

error

Prior

are

ABUS

1.

Errors

Measure

shown

(connect

the suspected

in

the

following

the

voltmeter

Assembly

groups

pertain

Error Group Description

4=

6

7

to

replacing

within

specication

Error

4

=

1

4

=

2

4

=

4

4

=

8

voltage at

table.

ground

(A3)

Y

=

Y

=

Y

Group

Do

Troubleshooting

to

the

microprocessor

ABUS Errors

0.5

V/GHz

an

assembly

the

not

lead to

at

6

Digital

Analog

Digital

disconnect

the

15

V

pin

number

A3TP4).

or

power

on

+5

+5

Ground

assembly

Output

module

,

verify

connection

Description

CPU

Assy

V

on

the

CPU

V

on

the

on

the

of

J1

on

W8

from

.

Errors

that

to

the

Assy

CPU

Assy

CPU

Assy

the

microprocessor

J1

when

the

power

assembly or

making

supply

module.

assembly

the

measurement

voltages

(A3)

+15

Digital

+5.2

0

+5

2.

If

the

voltage

one

or

more

3. On the end of the

is

present and

voltages

are

failing,

power supply facing the front of the synthesizer

LEDs. When the LEDs are

the LED for the failing voltage is

Suspect

V

oltage

V

Ground

V

digital

15

V

V

analog

within tolerance

continue

on, the supplies are operating within their specied tolerance

on, replace W8. If the LED is o, continue with the next

J1

Pin

Number

4 +15

13 0

6 +4.8

12

8 +5

at J1,

with

the

0

replace the

next

step.

4. One of the assemblies is loading down the power supply

one assembly at a time to locate the failing assembly

.

V

oltage

V

6

1

V

V

6

0.1

V

V

to

+5.4

V

15

V

6

1

V

V

6

0.6

V

step

microprocessor assembly

.

.If

, there are seven green

.If

. Disconnect W8 from each assembly

Troubleshooting 1-9

Troubleshooting

0.5

V/GHz Output

Errors

1.

Connect

voltmeter

2.

Set

more

specied).

3.

Verify

a

the

synthesizer

than

that the

voltmeter

ground

one

lead

frequency

voltage

to

pin 5

to

output

at

Error

6

=

6

=

6

=20

6

=

6

=

6

=800

6

=

6

=

7

=

of J1

A3TP4).

frequency

point

failed,

J1

is

within

Group

2

8

80

200

2000

8000

2

on the

to

set

the

Description

F

ailure

F

ailure

F

ailure at

F

ailure

F

ailure

F

ailure at

F

ailure

F

ailure

F

ailure

microprocessor assembly

the

frequency

the

output

tolerance

Frequency V

1.0

GHz

0.5

3.0 GHz 1.5 V

6.0

9.0

12.0

15.0

18.0

20.0

0.01

GHz

GHz

GHz

GHz

GHz

GHz

GHz

3.0

4.5

6.0

7.5

9.0

10

5

mV

at 1.0

at

at

at

at

at

at

shown

oltage

V

6

6

V

6

V

6

V

6

V

6

V

6

V

6

6

GHz

3.0

GHz

6.0 GHz

9.0

GHz

12.0

GHz

15.0 GHz

18.0

GHz

20.0

GHz

0.01 GHz

specied

frequency

in

0.50 V

0.50

V

0.50

V

0.50

V

0.50

V

0.50

V

0.50

V

0.50

V

0.5 V

in

to

the

(A3)

(connect

the

error

the

lowest

following

message

frequency

table

.

the

(if

If

the

voltage

0.5V/GHz

continue

4. P

erform the adjustment procedure \0.5 V/GHz Output A

is within

tolerance,

output connector

with

the

next

step

check the

and replace

.

continuity of

it if

necessary.

W8

If the

between

voltage is

J1

pin

out of

5

and

tolerance

djustment" in the Calibration Guide

If the 0.5 V/GHz output cannot be adjusted using the procedure or the self test still fails

replace the microprocessor assembly

ensure

that the 0.5 V/GHz output is functioning at all tested frequencies

. If it can be adjusted successfully

, rerun the self test to

.

1-10 Troubleshooting

the

,

.

,

LO

Synthesizer

The

following

Note

Data

Readback

and

error

groups

Reference

pertain

Assembly

to

the

LO

synthesizer

(A6)

Troubleshooting

and

Error Group Description

8=

9

=

10

=

11 =

12

=

Y

Y

Y

Y

Y

Prior

are

within

Data Readback

ABUS

Oscillator

Errors

Cold

LO Synthesizer/Reference

to

replacing

an

assembly

specication at

Errors

Error

or

the power

Unlocked/Divide V

module,

verify that

connection to

Errors

reference

the assembly

assembly

oltage

Errors

the power

Troubleshooting

.

supply voltages

or

module

.

1.

Install

procedure

this

2.

Using

and

timebase

activity

activity

3.

Sequentially probe

the

replace

ABUS

the

LO

\LO

manual.

an

oscilloscope

reference

to

is

not

is seen

instrument while

the microprocessor

Errors

Error

8

8

8

8

synthesizer

(Local

assembly

10



s/division).

seen

on all

pins 6,

Group

=

1

=

2

=

4

=8

and

Oscillator)

,

sequentially

(A6)

Preset

on

one

or

pins,

replace

8, 10,

probing each

assembly.

Data

Readback

Data

Readback

Data

Readback

Data

Readback from

reference

Synthesizer/Reference

probe

(connect

more of

the

the

and

the

instrument

these pins

LO

12

pin. If

If activity

Description

assembly

pins 6,

oscilloscope

, continue

synthesizer

of

J2

on

activity is

from

from

from

in

8, 10,

while

the

is seen,

Error Group Description

9=1 LO Assy ABUS:

9=2 LO Assy ABUS: +5 V

9=4 LO Assy ABUS: +13 V

the

LO

Assembly

the

LO

Assembly

the

LO

Assembly

the LO

the

Board

and 12

ground

service

Assembly

position.

Assembly

of

P1

lead

probing each

with the

and

reference

microprocessor

not

seen

on

one

replace

the

Analog Gnd

Refer

A6"

on

the

to A3TP4

pin. If

next

step

assembly

assembly

or

more

data

cable

to

in

Chapter

LO

synthesizer

and set

TTL

.

If

TTL

.

(A3).

of

these

(W9).

the

the

level

Preset

5

level

pins

of

,

1. Install the LO synthesizer and reference assembly in the service position. Refer to the

procedure \LO (Local Oscillator) Synthesizer/Reference Board Assembly A6" in Chapter 5 of

this manual.

2. Preset the synthesizer.

Troubleshooting 1-11

Troubleshooting

3. Measure

the voltmeter

the next

4. Use

and reference

control information

For

F

or

and

a.

b.

c.

d.

5.

Measure

tolerance

tolerance

the voltage

step.

the direct

future reference

example

reference

Press

4

SPCL

Press

Press

Press

5

4

60

5

4

on the

3

5

4

on the

4

the

shown

,

continue

at TP6

ground lead

If the

voltage is

control function

assembly (A6)

for use

, the

V

Analog

+13

,

to switch

assembly:

5

.

on

the

voltage

in

+5 V

numeric

numeric

numeric

at

TP6

the

table

with

on the

to A3TP4).

to switch

with the

acronyms

ABUS

oltage

Ground

+5

V

V

to the

keypad,

keypad,

keypad,

on

,

replace

the

next

microprocessor assembly

If the

voltage is

a

negative

to cause

the

microprocessor

step

voltage

the

the suspected

direct control

HW

and

HW

CTRL

ADDRESS

3 1 0

3 4 1.2

3 6 1.3

output of

then

terminate

then

terminate

then

terminate

the

microprocessor

.

analog

CTRL

HW

the

,

V

analog

between 0

continue

multiplexer

ABUS

function is

stand

for

CTRL

ALUE

multiplexer

the

entry

the

entry

the

entry

assembly

assembly

(A3) using

to

with

step

(U20)

voltage

shown

hardware

V

oltage

V

6

0.5

V

6

V

6

by

pressing

by

pressing

by

pressing

.

If

the

.

a

5

volts

7.

on

to

its

in

the

and

V

0.12

V

0.2

V

on

the

voltage

If

it

is

voltmeter

,

continue

the

LO

synthesizer

output.

following

control.

LO

synthesizer

5

(ENTER).

4

Hz

5

(ENTER).

4

Hz

5

(ENTER).

4

Hz

is

within

missing or

(connect

with

Direct

table

the

out of

.

6.

Measure

should

replace

continuity

7.

Use

reference

a.

b.

c.

d.

8. Measure

assemblies

cable is removed from the assembly that is loading the ABUS down.

that is loading the ABUS down. If no change is noted after the ABUS cable has been

disconnected from all assemblies

Oscillator Cold Error

1. Probe J8 pin 13 on the LO synthesizer and reference assembly (A6) with a voltmeter

(connect the voltmeter ground lead to A3TP4).

the

Press

Press

Press

Press

the

voltage

be

within

the

LO

of

the

direct

control

assembly

5

.

4

SPCL

5

on

4

60

5

on

4

3

5

on

4

0

the voltage

(one

at

TP13

the

tolerance

synthesizer

ABUS

the

the numeric

the numeric

at

function

to

switch

numeric

at TP13

a

time).

cable

on

the

LO

synthesizer

shown

and

reference

(W9)

to

the

keypad,

keypad, then

keypad, then

while disconnecting

The

voltage

Error Group Description

10 = 1 Oscillator Oven Cold

in

the

table

assembly

with

an

ohmmeter

cause

the

analog

\no

connect"

then

terminate

terminate the

terminate the

will

change

, replace the ABUS cable

and

reference

.

If

it

is

.

If

it

and

multiplexer on

input

to

its

the

entry

entry by

the ABUS

to

a

non-negative

missing

is

within

replace it

output.

entry

.

assembly

or

tolerance

if

the LO

by

pressing

by

pressing

pressing

cable from

.

The

voltage

isn't

within

necessary

synthesizer

4

4

each of

value

Replace the assembly

,

check

5

4

Hz

5

(ENTER).

Hz

5

(ENTER).

Hz

when

tolerance,

.

(ENTER).

the

the

the

and

other

ABUS

2. Verify that the voltage at J8 pin 13 is less than 3 volts.

1-12 Troubleshooting

If

the voltage

volts

.If

the voltage

at

W8 pin

LO

Synthesizer and

is greater

13 is

less

at

than

than 3

W8

3

pin

volts

volts,

13

is

,

replace

ensure

greater

Reference Unlocked/Divide

the

that

than

LO

synthesizer

the

3

voltage

volts

V

oltage

,

trace

at

W8

it to

and

reference

Errors

pin

13

is

its source

assembly.

Troubleshooting

less

than

3

.If

the voltage

Error

11

=

11

=

11

=

11

=

11

=

11 =

11

=

11

=

11

=

11

=

11

=

11

=

11

=

11 =

11

=

12

=

12

=

12

=

12

=

12

=80

12

=

12

=

12

=

12

=

12

=

12 =

12

= 40000

Group

2

8

10

40

80

200

400

1000

2000

8000

10000

40000

80000

200000

400000

2

4

10

20

100

400

800

2000

4000

10000

Description

LO

Synth/Ref

LO

Synth

LO

Synth/Ref

LO

Synth

LO

Synth/Ref

LO Synth

LO

Synth/Ref

LO

Synth

LO

Synth/Ref

LO

Synth

LO

Synth/Ref

LO

Synth

LO

Synth/Ref

LO Synth

LO

Synth/Ref

LO

Synth

LO

Synth/Ref

LO

Synth

LO

Synth/Ref

LO

Synth Divide

LO

Synth/Ref

LO

Synth

LO

Synth/Ref

LO

Synth

LO

Synth/Ref

LO Synth/Ref

LO

Synth/Ref Unlocked

Unlocked at

Divide

Unlocked

Divide

Unlocked

Divide V

Unlocked

Divide

Unlocked

Divide

Unlocked

Divide

Unlocked

Divide V

Unlocked

Divide

Unlocked

Divide

Unlocked

Unlocked

Divide

Unlocked

Divide

Unlocked

Unlocked at

V

oltage

V

oltage

oltage at

Voltage

V

oltage

V

oltage

oltage

V

oltage

V

oltage

Voltage

V

oltage

V

oltage

2.0 GHz

at

2.385

at

2.385

at

2.121

at

2.121

2.156

at

2.156

at 2.191

at

2.191

at

2.226

at

2.226

at

2.261

at

2.261

at

2.296

at

2.296

at

2.023

at

2.023

at

2.025

at

2.025

at

2.055

at

2.055

at

2.085

at

2.085

at

2.115

at

2.115

2.385 GHz

at 2.115

GHz

GHz

GHz

GHz

GHz

GHz

GHz

GHz

GHz

GHz

GHz

GHz

GHz

GHz

GHz

GHz

GHz

GHz

GHz

GHz

GHz

GHz

GHz

GHz

GHz

To Troubleshoot an LO Synthesizer/Reference Unlocked Condition

1. Install the LO synthesizer and reference assembly in the service position. Refer to the

procedure \LO (Local Oscillator) Synthesizer/Reference Board Assembly A6" in Chapter 5

of this manual.

2.

Connect a 10 MHz time base to the external reference inputs of the synthesizer and a

frequency counter

. Make sure the time base output power is between 0 dBm and +10

dBm.

3. Disconnect W10 from J4 on the LO synthesizer and reference assembly (A6) and connect J4

to the input of the frequency counter through a 20 dB attenuator.

4. Verify that the frequency at J4 is 3 MHz plus-or-minus one count.

Troubleshooting 1-13

Troubleshooting

If

the frequency

ohmmeter

If

W12 is

procedure

5.

Disconnect the

connector

6.

Using

If

the

reference

7.

Disconnect

output

8.

P

erform

If

steps

.If

opened, replace

.

.

an

oscilloscope

voltage

assembly

the

of

the

steps

3

through

synthesizer

W10

to

J4,

and

9.

Disconnect

the

10.

Connect

voltmeter

input

W1

of

a

voltmeter

ground

at J4

is incorrect

W12 has

continuity

frequency counter

,

verify

at

the

tee

connector

,

otherwise

external

10

synthesizer

3

through

6

fail

with

and

reference

continue

from

J7

on

the

frequency

to

P1

lead

to

W12.

that

,

MHz

to

the

6

again.

the

assembly

with

the

the

counter

pin

A3TP4).

or missing,

,

replace

If

the

from

the

is

continue

time

reference

external

,

otherwise

next

LO

synthesizer

through

2

on

the

the

frequency

J4

and

voltage

incorrect

with

base

from

input

10

step

.

a

LO

synthesizer

check

LO

synthesizer

at

reconnect

at

the

or

missing,

this

procedure

the

of

MHz

time

,

remove

and

reference

20

dB

the

continuity

J4

is

correct,

W10

tee

connector

replace

synthesizer

the

frequency

base

the

SMC

attenuator

and

reference

of

W12

and

reference

continue

to

J4

through

is

4.5

the

LO

.

and

connect

counter

disconnected,

tee

connector

assembly

and

.

assembly

with

an

assembly

with

this

an

Vp-p

6

0.5

synthesizer

the

.

replace the

,

reconnect

connect

(connect the

.

SMC

tee

Vp-p.

and

reference

LO

J7

to

11.

Set

the

the

self

Output

synthesizer

test

and

Frequency

(GHz)

2.000 331

2.385 300

2.121 305

2.156 310

2.191 315

2.226 320

2.261 325

output

measure

frequency

the

frequency

Measured

Frequency

(MHz)

to

the

at

failing

J7

for

frequency or

each

suspected frequency

Output

(GHz)

2.023 335

2.025 340

2.055 345

2.085 350

2.115 355

2.385 300

2.115 355

frequencies indicated

Frequency

.

Measured

Frequency

(MHz)

2.296 330

12. V

erify that the measured frequency is exactly as shown in the

and that the voltage at P1 pin 2 remains at a TTL low level.

second column of the table

If the suspected frequency

or frequencies as well as the voltage level is correct, continue with the next step

suspected frequency or the TTL voltage level is incorrect, replace the LO synthesizer and

reference assembly

13.

Disconnect the frequency counter from J7 and connect a power meter and sensor to it.

.

by

.Ifa

14. Measure the power at J7 at the suspected output frequency. The power level should be

+14 dBm61dB. If the power level is correct, the LO synthesizer and reference assembly

is functioning correctly. If the power level is incorrect, replace the LO synthesizer and

reference assembly.

1-14 Troubleshooting

Troubleshooting

Note

T

o Troubleshoot

1.

Install the

procedure

this

manual.

2.

Connect

the

3.

Connect a

4.

Set

5.

V

erify

a

voltmeter ground

the

synthesizer

that

suspected

remains

and

replace

at

reference

the

Note

If this

troubleshooting

reference

only

malfunction

optionally

an Incorrect

LO synthesizer

\LO

(Local

voltmeter

Oscillator)

to

lead

frequency

counter

output

the

frequency

frequency

a

TTL

low

as

level.

assembly

LO

synthesizer

If

this

troubleshooting

reference

only

malfunction

optionally

test

functionality

assembly

replace

Synthesizer

and

P1

pin

to

A3TP4).

to

frequency

at

the

measured

If

is

functioning

and

assembly

replace

.

procedure

is

functioning

on

the

assembly

the

microprocessor

has

correctly

is

Divide

reference

assembly

synthesizer/Reference

2

on

the

LO

synthesizer

the

RF

to

synthesizer

on

a

the

frequency

reference

procedure

is

functioning

on

the

assembly

the

LO

output

the

frequency

correctly

synthesizer

connector

suspected

RF

output

and

.

assembly

has

correctly

is

determined

likely

in

assembly

V

oltage

in

the

Board

and

failing

connector

counter

TTL

level

If

the

frequency

.

determined

likely

in

and

reference

that

but

the

the

self test

to

restore

Condition

service

Assembly

reference

of

the

frequency

and

that

are

correct,

that

but

the

the

self

the

LO

self

test

still fails

circuitry.

self

position.

A6"

assembly

synthesizer

.

is

within

the

voltage

the

or

TTL

level

the

LO

self

test

still

test

circuitry

assembly

synthesizer

, the

You

test

functionality

Refer

to

in

Chapter

(A6)

.

one

count

at

P1

LO

synthesizer

is

incorrect,

synthesizer

fails

,

.

Y

ou can

to

restore

and

can

the

5

(connect

of the

pin

and

the

self

.

of

2

Troubleshooting 1-15

Troubleshooting

Y

O

The

Loop

following

and

error

Error Group Description

13 =

14

=

15

=

Note

Data

Readback

Oset

Y

Y

Y

Prior

are

Synthesizer

groups

pertain

Data Readback

ABUS

Oset

to

replacing

within specication

Errors

Assembly

to

the

Y

O

Errors

Error

Synthesizer

an assembly

at the

(A7)

loop

and

oset

Incorrect

or module

Frequency/Unlocked

, verify

power connection

Troubleshooting

synthesizer assembly

Errors

that

the

power

to

the

assembly

.

supply

or

module

voltages

.

1.

Using an

Y

and set

O

oscilloscope,

loop

and

oset

the timebase to 10

Error

13

13

13

13

13 =

13

13

13

13

13

13

13 =

13

13 =

13

13

Group

=

1

=

2

=

4

=

8

10

=

20

=

40

=

80

=

100

=

200

=

400

800

=

1000

2000

=

4000

=

8000

sequentially probe

synthesizer

assembly



s/division). Preset the instrument while probing each pin. If

Data

Readback

Data

Readback

Data

Readback

Data

Readback

Data Readback

Data

Readback

Data

Readback

Data

Readback

Data

Readback

Data

Readback

Data

Readback

Data Readback

Data

Readback

Data Readback

Data

Readback

Data

Readback

pins 12,

(A7)

(connect

TTL level activity is not seen on one or more of these

TTL level activity is seen on all pins

, go to step

Description

from

the

from

the

from

the

from

the

from the

from

the

from

the

from

the

from

the

from

the

from

the

from

the

from

the Y

from the

from

the

from

the

13,

14,

the

pins, continue with the next step

3 to continue

Y

O/Oset

Y

O/Oset

Y

O/Oset

Y

O/Oset

Y

O/Oset

Y

O/Oset

YO/Oset

Y

O/Oset

Y

O/Oset

Y

O/Oset

Y

O/Oset

Y

O/Oset

O/Oset Assy

YO/Oset

Y

O/Oset Assy

Y

O/Oset

15,

16,

17,

oscilloscope

.

Assy

Assy

Assy

Assy

Assy

Assy

Assy

Assy

Assy

Assy

Assy

Assy

Assy

Assy

18,

and

ground

19

of

lead

J3

to

on

the

A3TP4

.If

2. Sequentially probe pins 12, 13, 14, 15, 16, 17, 18, and 19

assembly (A3). Preset the instrument while probing each pin. If activity is not seen

or more of these pins

, replace the microprocessor assembly

of J2 on the microprocessor

. If activity is seen

on all pins

on one

,

replace the data cable (W9).

3. Using an oscilloscope, sequentially probe pins 5, 6, 8, 20, 21, 22, 24, and 26 of J3 on the

YO loop and oset synthesizer assembly. Preset the instrument while probing each pin. If

activity is not seen on one or more of these pins, continue with the next step. If activity is

seen on all pins, replace the YO loop and oset synthesizer assembly.

4. Sequentially probe pins 5, 6, 8, 20, 21, 22, 24, and 26 of J2 on the microprocessor assembly.

Preset the instrument while probing each pin. If activity is not seen on one or more of these

1-16 Troubleshooting

pins

cable

, replace

(W9).

the microprocessor

assembly.

If activity

is

seen

on

all

pins

Troubleshooting

,

replace

the

data

ABUS

1.

2.

3.

4. Measure

5.

Error

Preset the

Measure the

the

voltmeter ground

the

next step

Use

the

oset

synthesizer

a.

Press

b.

Press

c.

Press

d. Press

V,

replace the

continue with

Measure

should

synthesizer

with

an

synthesizer

voltage

.If

direct

be

ohmmeter

control

5

.

4

SPCL

5

on

4

60

5

on

4

66

5

on

4

the numeric

3

the voltage

microprocessor

the next

the

voltage

2.5

V

assembly

at

the

voltage

assembly

the

numeric

the

numeric

at TP6

at

6

1

V

.

.

and

Error

14

.

TP6

lead to

function

step

.

J3

pin

If

it

is

If

it

is

replace

Group

=

1

on

the

A3TP4).

is

a

negative

to

(A7)

to

keypad,

keypad,

keypad,

on

the

assembly

4

on

missing

within

it

if

Description

Y

O/Oset

microprocessor

If

the

voltage

voltage

cause

the

analog

switch

microprocessor

the

tolerance

necessary

then

then

then

.

Y

or

the

terminate

terminate

terminate

If

the

O

loop

isn't

within

,

.

6

check

ABUS:

assembly

,

continue

multiplexer

5

V

input

the

assembly

voltage

and

oset

tolerance

is

between

the

entry

the

entry

entry

is

missing

the

continuity

6

5

V

(A3)

with

0

to

with

step

(U69)

to

its

output.

by

pressing

by

pressing

by

pressing

.

If

the

or

synthesizer

,

replace

a

voltmeter

5

volts

6.

on

the

voltage

out

of

assembly

the

of

the

,

continue

Y

O

loop

5

(ENTER).

4

Hz

5

(ENTER).

4

Hz

5

(ENTER).

4

Hz

is

1.35

tolerance

.

The

YO

loop

ABUS

cable

(connect

with

and

V

6

0.65

,

voltage

and

oset

(W9)

6.

Use

the

synthesizer

a.

Press

b.

Press

c.

Press

d.

Press

7.

Measure

assemblies

cable

that

is

disconnected

direct

4

SPCL

4

60

4

66

5

4

0

the

is

removed

loading

control

assembly

5

.

5

on

the

5

on

the

on

the

voltage

(one

at

the

from all assemblies

function

to

switch

numeric

numeric

numeric

at

J3 pin

a

time).

from the

ABUS

down.

to

cause

the

analog

the

\no

connect"

keypad,

keypad,

keypad,

4 while

The voltage

assembly that

then

terminate

then

terminate

then terminate

disconnecting the

will change

is loading

If

no

change

, replace the ABUS cable

is

input

noted

multiplexer

to

the

entry

the

entry

the entry

ABUS cable

to a

non-negative value

the ABUS

after

on

its

output.

by

by

by pressing

down. Replace

the

.

the

pressing

pressing

ABUS

YO

from

cable

loop

and

5

(ENTER).

4

Hz

5

(ENTER).

4

Hz

5

(ENTER).

4

Hz

each

of

when

the assembly

has

been

oset

the

the

other

ABUS

Troubleshooting 1-17

Troubleshooting

Oset

Synthesizer Incorrect

Error

15

15

15

15

15

15 =

15

15

15

15

15 =

15

15

15

15

15 =

15

15

15

15

Group

=

4

=

8

=

20

=40

=

100

200

=

800

=

1000

=

4000

=

8000

20000

=

40000

=

100000

=

200000

=

800000

1000000

=

4000000

=

8000000

=

20000000

=

40000000

Frequency/Unlocked Errors

Description

Oset

Oset

Oset

Oset

Oset

Oset Synth

Oset

Oset

Oset

Oset

Oset Synth

Oset

Oset

Oset

Oset

Oset Synth

Oset

Oset

Oset

Oset

Synth

Synth

Synth

- incorrect

unlocked

-

incorrect

Synth unlocked

Synth

-

incorrect

unlocked at

Synth

Synth

Synth

Synth

Synth

Synth

Synth

Synth

-

incorrect

unlocked

-

incorrect

unlocked

-

incorrect

unlocked

-

incorrect

unlocked

-

incorrect

unlocked at

Synth

Synth

Synth

Synth

-

incorrect

unlocked

-

incorrect

unlocked

freq at

at

13

MHz

freq

at 14.749

at

14.749

freq

at

14.75

freq

at

at 19.499

freq

at

at

19.5

freq

at

at

26.5

freq

at

at

13

MHz

freq

at

26.5 MHz

freq

at

at

19.5

freq

at

at

19.499

13 MHz

MHz

14.75

MHz

19.499

MHz

19.5

MHz

26.5

MHz

13

26.5

19.5

MHz

19.499

MHz

MHz

MHz

MHz

MHz

MHz

MHz

MHz

MHz

MHz

T

o

Troubleshoot

1.

Connect

a

frequency

2.

Disconnect

W10

to the

3.

Verify

If

that

the frequency

ohmmeter

If

W10

has

frequency at W10 is correct, continue with the next step

4. Disconnect the frequency counter from W10 and reconnect W10 to J9

an

the

rear

counter

W10

input

the

.If

W10 is

continuity

Oset

panel

.

from J9

of

the

signal

at

at W10

opened, replace

,

replace

Synthesizer Incorrect

10 MHz

on the

frequency

W10

is

output of

YO

is

3

MHz

incorrect

the

loop and

counter

plus-or-minus

or

missing,

through

W10.

the

LO

synthesizer

Frequency/Unlocked

synthesizer

oset

synthesizer

check

and

to

a

20

dB

one

count.

the

reference

the

attenuator

continuity

.

external

assembly

of

assembly

Condition

reference

(A7)

and

input

connect

.

W10

with

an

(A6).

If

the

through an SMC tee

connector.

5. Using an oscilloscope

If the voltage at the tee connector is incorrect or missing, go to the procedure \T

, verify that the voltage at the tee connector is 4.5 Vp-p

6

0.5 Vp-p

o

Troubleshoot a LO Synthesizer/Reference Unlocked Condition" under \LO Synthesizer and

Reference Assembly Troubleshooting," otherwise, continue with this procedure.

6. Disconnect W3 from J1 on the YO loop and oset synthesizer assembly and connect J1 to

the input of the frequency counter through a 20 dB attenuator.

7. Connect a voltmeter to J3 pin 2 on the YO loop and oset synthesizer assembly (connect

the voltmeter ground lead to A3TP4).

of

.

1-18 Troubleshooting

Troubleshooting

8. Change

by the

For

example,

a. Press

b. Press

c.

Press

d.

Press

9.

V

erify

one

count

frequency

step

.

and

oset

the oset

self test

4

SPCL

4

63

4

13

4

MHz

that

and

or

If

a

suspected

synthesizer

synthesizer frequency

using

to

set

5

.

5

on

the numeric

5

on

the

5

.

the

measured

that

frequencies

the

oset

the

oset

numeric

frequency

the

voltage

as

frequency

assembly

Oset

13.000

14.749

14.750

19.499

19.500

freq

function.

synthesizer

keypad,

then

keypad.

is

at

J3

pin

well

as

the

or

the

.

Synthesizer

Frequency

MHz

MHz

MHz

MHz

MHz

to the

frequency

exactly

2

voltage

TTL

voltage

failing

terminate

as

shown

remains

level

level

Oset

26.500

13.000

26.500

19.500

19.499

frequency

to

13.000

the

entry

in

the

at

a

TTL

is

correct,

is

incorrect,

Synthesizer

Frequency

MHz

MHz

MHz

MHz

MHz

or

MHz:

by

following

high

level.

continue

frequencies

pressing

table

If

with

replace the

indicated

5

(ENTER).

4

Hz

plus-or-minus

the suspected

the

next

YO

loop

10.

Disconnect

11.

V

erify

be

assembly

synthesizer

Note

the output

TTL

levels

the

frequency counter

levels

of

.

If the

output

is

functioning

assembly

If this

correctly

.

troubleshooting

synthesizer assembly

malfunction on

Y

O

loop

and

oset

can

optionally

assembly

or

microprocessor

from

the

signal

levels

are

.

If the

procedure

is

functioning

the assembly

synthesizer

isolate

and

J1

at

J1

at

TTL

levels

is

replace

assembly

and

connect

at

the

suspected

levels

are

has

determined

correctly

likely

in

assembly

either

to

an

,

the

Y

O

incorrect,

but

the

self-test

or

the

the

Y

O

restore

oscilloscope

oset

loop

replace

that

the

to

frequency

and

oset

the

the

Y

O

self

test

circuitry

microprocessor

loop

and

oset

self

test

functionality

it.

.

They

synthesizer

Y

O

loop

loop

and

still

fails

on

either

assembly

synthesizer

should

and

oset

,

the

the

.

.

oset

only

Y

ou

Troubleshooting 1-19

Troubleshooting

YIG

The

Driver

following

Assembly

error

Note

Data

Readback

groups

Prior

are

within

Errors

(A9)

Troubleshooting

pertain

to

the

YIG

Driver

Error Group Description

16 =

17

18

19 =

to

replacing

specication

=

=

Y

Y

Y

Y

Data Readback

ABUS

MSB

Low/High Band

an

assembly

at

the

Errors

Errors

or

module

power

assembly

.

Errors

Voltage

,

verify

connection

Errors

that

to

the

the power

assembly

supply voltages

or module

.

1.

Install

Board

2.

Using

and

A3TP4

pin. If

step

3.

Sequentially

the

Assembly

an

26

of J4

and

TTL level

.

If TTL

YIG

Driver

A9"

oscilloscope

on the

set the

level activity

probe pins

microprocessor assembly

not seen

seen on

on

one

all pins

or

, replace

ABUS Errors

Error

16

16

16

16

16

16

=

=

=

=

=

=

Group

1

2

4

8

10

20

assembly

in

Chapter

,

sequentially

YIG

Driver

timebase to

activity is

5, 6,

more

of

the

not seen

is seen

8, 14,

(A3).

these

data

Data

Readback

Data

Readback

Data

Readback

Data

Readback

Data

Readback

Data

Readback

in

the

5

of

this

probe

assembly

10



s/division).

on

on

all

15,

Preset

pins

,

cable

service

manual.

pins

(A9)

one

pins

16,

17,

the

instrument

replace

(W9).

Description

from

the

from

the

from

the

from

the

from

the

from

the

position. Refer

5,

6,

8, 14,

(connect

Preset

or

more

,

replace

18,

19,

the

of

the

20,

while

the

microprocessor

YIG

Driver

YIG

Driver Assy

YIG

Driver

YIG

Driver

YIG

Driver

YIG

Driver

15, 16,

the

oscilloscope

instrument

these

pins

YIG

Driver

21,

probing

to

22,

Assy

Assy

Assy

Assy

Assy

the

procedure

17,

18,

,

continue

Assembly

24,

and

each

assembly

19,

ground

while

pin.

20,

probing

with

26

of

.

If

\YIG

21,

lead

the

.

J2

If

activity

activity

Driver

22,

to

each

on

24,

next

the

is

is

Error Group Description

17 = 1 YIG Driver ABUS: +42 V

17 = 2 YIG Driver ABUS: Digital Gnd

1. Install the YIG Driver assembly in the service position. Refer to the procedure \YIG Driver

Board Assembly A9" in Chapter 5 of this manual.

2. Preset the synthesizer.

3. Measure the voltage at TP6 on the microprocessor assembly (A3) with a voltmeter (connect

the voltmeter ground lead to A3TP4). If the voltage is between 0 to 5 volts, continue with

the next step. If the voltage is a negative voltage, continue with step 7.

1-20 Troubleshooting

Troubleshooting

4. Use

5.

6.

the direct

assembly (A9)

information is

F

or

example

assembly:

a.

Press

b.

Press

c.

Press

d.

Press

Measure

tolerance

tolerance

Measure

tolerance

assembly

ohmmeter

control function

to switch

shown in

,

to

switch

5

.

4

SPCL

5

on

60

5

on

4]8

5

on

the

5

voltage

shown

continue

voltage

shown

If

it

is

and

replace

the

the

4

4

4

the

,

the

.

+42

Digital

numeric

numeric

numeric

at

in

the

with

at

in

the

within

to cause

the suspected

the following

ABUS

V

oltage

V

Ground

+42

V

to

keypad,

keypad,

keypad,

TP6

on

the

table

,

replace

the

next

TP4

on

the

table

.

If

it

tolerance

it

if

necessary

the

analog

ABUS voltage

table.

HW

CTRL

ADDRESS

48 5 1.24

48 7 0

the

output

then

then

then

microprocessor

the

step

.

YIG

is

missing or

,

check

.

of

terminate

terminate

terminate

microprocessor

Driver

the continuity

multiplexer

to

HW

CTRL

V

ALUE

the

analog

the

the

the

assembly

assembly

isn't within

.

its

entry

entry

entry

assembly

The

of the

(U22)

output.

V

multiplexer

.

tolerance

V

oltage

V

6

6

0.5

by

pressing

by

pressing

by

pressing

If

the

.

voltage

ABUS

Direct

0.14 V

voltage

If

on

V

on

it

is

should

,

replace

cable

the

control

the

4

Hz

4

Hz

5

4

Hz

is

missing

(W9)

YIG

Driver

YIG

Driver

5

(ENTER).

5

(ENTER).

(ENTER).

within

or

be within

the

YIG

with

the

out

the

Driver

an

of

7.

Use

the

to

switch

a.

Press

b.

Press

c.

Press

d.

Press

8.

Measure

assemblies

cable

that

is loading

disconnected

MSB

Errors

direct

is removed

the

4

SPCL

5

on

4

60

5

on

4

48

5

on

4

0

the

voltage at

(one at

control

\no

5

.

the

from all

function

connect"

the

numeric

the

numeric

the

numeric

TP4 while

a

time).

from

the

ABUS

assemblies,

Error Group Description

18 = 100 YIG Driver MSB check, value = 256

18 = 1000 YIG Driver MSB check, value =

18 = 10000 YIG Driver MSB check, value = 1024

18 = 100000 YIG Driver MSB check, value = 2048

18 = 1000000 YIG Driver MSB check, value = 4096

18 = 10000000 YIG Driver MSB check, value = 8192

input

keypad,

keypad,

keypad,

The

assembly

down.

to

cause

the

analog

to

its

output.

then terminate

then terminate

then terminate

disconnecting the

voltage

If

that

no

change

replace

will

is

change

loading

the

is

noted

ABUS

multiplexer

the

entry

the entry

the entry

ABUS cable

to

a

non-negative

the

ABUS

after

the

cable

.

on the

by

by

by

down.

pressing

pressing

pressing

from

ABUS

512

YIG

Driver

4

4

4

Hz

each

value

Replace

cable

5

(ENTER).

Hz

5

(ENTER).

Hz

5

(ENTER).

of

the

when

the

has

been

assembly

other

the

ABUS

assembly

1. Install the YIG Driver assembly in the service position. Refer to the procedure \YIG Driver

Board Assembly A9" in Chapter 5 of this manual.

Troubleshooting 1-21

Troubleshooting

2. Use

the direct

Driver assembly

shown in

P

For

example,

a. Press

b.

Press

c.

Enter

the

entry

d.

Enter

the

entry

e.

Press

f. Press

g. Enter

pressing

h.

Enter the

pressing

control function

(A9) high

the following

Bit

osition

256 57 96 49 256

512 57 96 49 512

1024 57 96 49 1024

2048 57 96 49 2048

4096 57 96 49 4096

8192 57 96 49 8192

to

set

5

.

4

SPCL

5

on

oset

by

oset

by

5

on

D

4Hz5

D

4

Hz

5

the

pressing

pressing

.

the

A

C

(ENTER).

A

C

5

(ENTER).

4

60

the

the

4

SPCL

4

60

the

table.

Oset

A

the

512

numeric

disconnect

4

disconnect value

4

numeric

address

value

by

to set

while setting

Disconnect

ddress

bit

position

keypad,

address

5

(ENTER).

Hz

5

(ENTER).

Hz

keypad,

by

typing

typing

4

the suspected

all other

Oset

on

the

then

terminate

by

typing

by typing

then

terminate

5

on

5

on the

the

512

4

49

failing bit

DA

C bits

Disconnect

V

alue

D

A

C

high

the

5

on

4

57

5

on

4

96

numeric

numeric

the

the

low

D

A

while

entry

the

numeric

numeric

entry

keypad,

keypad,

of

the

.

Direct

C

A

ddress

setting

by

pressing

keypad, then

by

pressing

then

then

D

A

C

(U8)

control

D

A

all

other

4

Hz

keypad,

4

Hz

terminate

terminate

C

on

the

addresses

V

alue

bits

low:

5

(ENTER).

then

terminate

terminate

5

(ENTER).

the

entry

the

entry

YIG

are

by

by

3.

Measure

the

the

4.

Use

line

a.

b.

c.

d.

5. Measure the voltage at TP6 on the microprocessor assembly

tolerance shown in the following table

or out of tolerance

the

voltmeter

next

step

the

direct

to

its

Press

4

SPCL

Press

4

60

Press

4

48

Press

4

1

voltage

ground

.

If

control

output.

5

.

5

on

5

on

5

on

the

at

TP6

on

the

microprocessor

lead

to

A3TP4).

the

voltage

the

numeric

the

numeric

numeric

, continue with the next step

is

function

keypad,

keypad,

keypad,

a

to

Position

256 0.12 V/00.07 V

512 0.168 V/0 V

1024 0.24 V/0.048 V

2048 0.336 V/0.12 V

4096 0.673 V/0.288 V

8192 1.202 V/0.841 V

If

negative

cause

the

then

then

then

, replace the microprocessor assembly

Bit

MUX Output V

the

voltage

voltage

analog

terminate

terminate

terminate

.

(max/min)

assembly

is

between

,

continue

multiplexer

the

the

the

entry

oltage

entry

entry

(A3)

with

0

to

with

step

(U22)

by

pressing

by

pressing

by pressing

. If the

a

voltmeter

5

volts

,

7.

to

switch

4

Hz

4

Hz

4

Hz

voltage is within the

.Ifit

(connect

continue

the

5

(ENTER).

5

(ENTER).

5

(ENTER).

is missing

with

SENSE

1-22 Troubleshooting

6.

Measure the

tolerance

assembly

ohmmeter

7.

Use

the

to

switch the

voltage at

shown in

.If

it is

and

the table

within tolerance

replace

direct control

\no connect"

TP4 on

the YIG

.If

it if

necessary.

function to

input to

it is

missing or

, check

cause the

its output.

Driver assembly

isn't within

the continuity

analog multiplexer

.The

voltage should

tolerance,

of the

replace

ABUS cable

on the

YIG Driver

Troubleshooting

be

within

the

(W9)

YIG

with

the

Driver

an

assembly

a.

Press

b.

Press

c.

Press

d.

Press

8.

Measure the

assemblies

cable

is removed

that

is loading

disconnected

Low/High

1.

Install

2.

Board

Set

Assembly

the

pertinent

5

.

4

SPCL

5

on

4

60

5

on

4

48

5

on

the

4

0

voltage at

(one at

the ABUS

from all

Band

the

YIG

synthesizer

error

the

numeric keypad,

the

numeric keypad,

numeric keypad,

TP4 while

a time).

from the

assembly that

down. If

assemblies,

V

oltage

Errors

The voltage

then terminate

then terminate

then terminate

disconnecting

will

change

is

loading

no

change

replace the

is

noted

ABUS

Error Group Description

19

19

Driver

A9"

output

=4

=

20

assembly

in

Chapter

frequency

in

5

YIG

YIG

the

of

Driver Low

Driver

service

this

manual.

to

the

frequency

High Band

position.

reported.

Error

Number

19

=

19

=

Message

4

20

Output

Frequency

4

GHz

12

GHz

the entry

the

ABUS

to

the

cable

Band

D

0.314

0.915

the entry

the entry

cable

a

non-negative

ABUS

after

the

.

voltage

voltage check

Refer

shown

A

C

Output

(max/min)

V/0.237

V/0.766

by

pressing

by

pressing

by

pressing

from

down.

ABUS

check

to

the

in

the

V

oltage

V

V

4

Hz

4

Hz

5

4

Hz

each

of

value

when

Replace

cable

has

procedure

following

5

(ENTER).

5

(ENTER).

(ENTER).

the

other

the

the

assembly

been

\YIG

table

for

ABUS

Driver

the

3.

Use

the

direct

a.

Press

b.

Press

c. Enter the oset disconnect address by typing

the entry by pressing

d. Enter the oset disconnect value by typing

the entry by pressing

4. Measure the

the voltmeter ground lead

the next step

4

SPCL

4

60

5

on

control

5

.

the

function

numeric

4

Hz

4

Hz

to

keypad,

5

(ENTER).

5

(ENTER).

disconnect

then

terminate

the

oset

voltage

the

entry

5

on the numeric keypad, then terminate

4

57

5

on the numeric keypad, then terminate

4

96

from

by

pressing

the D

AC.

4

Hz

5

(ENTER).

voltage at TP6 on the microprocessor assembly (A3) with a voltmeter (connect

to A3TP4). If the voltage is between 0 to 5 volts

.If

the voltage is a negative voltage

, continue with step 8.

, continue with

5. Use the direct control function to cause the analog multiplexer (U22) to switch the SENSE

line to its output.

a. Press

b. Press

c. Press

d. Press

4

5

.

SPCL

4605

on the numeric keypad, then terminate the entry by pressing

4485

on the numeric keypad, then terminate the entry by pressing

415

on the numeric keypad, then terminate the entry by pressing

4Hz5

4Hz5

4Hz5

(ENTER).

(ENTER).

(ENTER).

Troubleshooting 1-23

Troubleshooting

6.

Measure

tolerance

tolerance

7.

Measure

tolerance

assembly

ohmmeter

8.

Use

to

the

switch

the

voltage at

shown

,

continue

the

voltage

shown

.If

it is

and

direct

the

TP6 on

in

the table

with the

at

TP4 on

in

the

table

within tolerance

replace

control

\no

it if

function to

connect"

the microprocessor

, replace

next step

.If

the YIG

it is

missing or

the microprocessor

.

Driver assembly

,check

necessary.

cause the

input to

its output.

assembly.

isn't within

the continuity

analog multiplexer

If the

assembly.

. The

voltage should

tolerance,

of the

voltage is

If it

is missing

replace the

ABUS cable

on

the

YIG

within the

be within

(W9)

with

Driver

or out

the

YIG

Driver

an

assembly

of

a.

Press

b.

Press

c.

Press

d.

Press

9.

Measure the

assemblies

cable

that

is

disconnected

5

4

.

SPCL

5

4

on the

60

5

4

on the

48

5

4

on the

0

voltage at

(one at

is removed

loading

the

from

numeric keypad,

numeric keypad,

numeric keypad,

TP4 while

a time).

from

ABUS

all

The

the

assembly

down.

assemblies

then terminate

then terminate

then terminate

disconnecting the

voltage

If

,

that

no

change

replace

will

is

change

loading

the

is

noted

ABUS

the entry

the entry

the entry

ABUS

to

a

non-negative

the

ABUS

after

cable

.

by

cable

down.

the

by

pressing

by

pressing

pressing

from

ABUS

4

4

4

Hz

each

value

Replace

cable

5

(ENTER).

Hz

5

(ENTER).

Hz

5

(ENTER).

of

the

when

the

has

been

other

the

ABUS

assembly

1-24 Troubleshooting

ALC

The

following

Note

Assembly

error

Prior

are

(A10)

groups

Troubleshooting

pertain

to

the

ALC

assembly

Error Group Description

20 =

Y

21

=

Y

22

=

Y

23 =

Y

24

=

Y

25

=

Y

26/27 Input/Output

28 =

Y

to

replacing

within

specication

Data Readback

ABUS

D

A

C

Errors

Error

Integrator Errors

Leveled

RF/Reference

Track and

an

assembly

at

the

Indicator

Detector Errors

Switching

Hold Errors

or

module

power

.

Errors

Trip

P

oint

Errors

,

verify that

connection

Errors

to

the

the power

assembly

Troubleshooting

supply voltages

or module

.

Data Readback

1.

Install

the

Assembly

2.

Using

an

(A10)

(connect



s/division).

on one or more of these pins

If TTL level activity is seen on all pins

3. Sequentially probe pins 6, 8, 10, and 13 of

Errors

ALC

assembly

A10"

in

Chapter

oscilloscope

the

oscilloscope

Preset

Error

20 =

20

20

20

20

20

20

20

=

=

=

=

=

=

=

Group

1

2

4

8

10

20

40

80

in

5

,

sequentially

the

instrument

Description

Data Readback

Data

Readback

Data

Readback

Data

Readback

Data

Readback

Data

Readback

Data

Readback

Data

Readback

the

service

of

this

ground

,

continue with the next step

position. Refer

manual.

probe

pins

lead

while

probing

to A3TP4

6, 8,

from

from

from the

from

from

from

from

from

10, and

each

, replace the ALC assembly

J2 on the microprocessor assembly (A3). Preset

the instrument while probing each pin. If activity is not seen

replace the microprocessor assembly

. If activity is seen, replace the data cable (W9).

the

the

the

the

the

the

the

to the

13 of

and set

pin.

.

ALC

Assy

ALC

Assy

ALC

Assy

ALC

Assy

ALC

Assy

ALC

Assy

ALC

Assy

ALC

Assy

procedure \ALC

J4 on

the

the timebase

If

TTL

level

activity

ALC

to 10

Board

assembly

is

not

.

on one or more of these pins

seen

,

ABUS Error

1. Preset the synthesizer.

Error Group Description

21 = 1 ALC Assy ABUS: +8 V

Troubleshooting 1-25

Troubleshooting

2. Measure

the voltmeter

the next

3. Use

4. Measure

5.

6.

the direct

(A10) to

a. Press

b. Press

c. Press

d. Press

V and

and 1.874

Measure

and

1.874

If

it

is

ohmmeter

Use

the

switch the

a. Press

b. Press

c. Press

d.

Press

the voltage

step.

switch the

5

4

SPCL

5

on

4

60

5

on

4

11

5

on

4

2

the

voltage

1.874 V

V,

continue

the

voltage

V

.

If

between

and

direct

\no

5

4

SPCL

5

on

4

60

5

on

4

11

5

on

4

0

at TP6

ground lead

If the

control function

scaled +8

.

the numeric

the

numeric

the

numeric

,

replace

it

is

missing

2.301

replace

control

connect"

.

the

numeric

the

numeric

the

numeric

to A3TP4).

voltage is

at

TP6

the

microprocessor

with

the

at

TP9

V

and

it

if

necessary

function

input

on the

keypad,

on

on

or

1.874

keypad,

microprocessor assembly

a

negative

to cause

V input

keypad, then

keypad,

isn't

to

keypad,

keypad,

then

then

the

microprocessor

next

step

the

ALC

between

V

,

check

.

to

cause

its

output.

then

then

then

If the

voltage

the

to

its

terminate

terminate

terminate

assembly

.

assembly

the

the

terminate

terminate

terminate

voltage is

,

continue

analog

output.

assembly

.

The

2.301

V

continuity

analog

(A3) with

between 0

with

multiplexer

the

entry

the

entry

the

entry

.

.

If

the

voltage

voltage

and

1.874

of

multiplexer

the

entry

the

entry

the

entry

(U35)

by

by

by

If

the

should

V

the

on

by

by

by

step

pressing

pressing

pressing

,

ABUS

pressing

pressing

pressing

a

voltmeter

to

5

volts

,

6.

on

the

4

Hz

4

Hz

4

Hz

voltage

is

replace the

the

not

be

cable

ALC

is

between

between

4

Hz

4

Hz

4

Hz

(connect

continue

ALC

assembly

5

(ENTER).

5

(ENTER).

5

(ENTER).

between

2.301

2.301

ALC assembly

(W9) with

assembly

5

(ENTER).

5

(ENTER).

5

(ENTER).

to

with

2.301

V

V

.

an

7.

Measure

assemblies

cable

that

disconnected

D

A

C

1. Install the ALC assembly in the service position. Refer to the

Assembly A10" in Chapter 5 of this manual.

2. Using an oscilloscope

22, and 26 of J4 on the ALC assembly (A10) (connect the oscilloscope ground lead to A3TP5

and set the timebase to 10s/division). Preset the instrument while probing each pin. If

TTL level activity is not seen on one or more of these pins, continue with the next step.If

TTL level activity is seen on all pins, replace the ALC assembly.

is

removed

is

loading

Errors

the

voltage

(one

the

from

at

TP9

while

disconnecting

at

a

time).

from

ABUS

all

Error

22

22

22

22

22 = 80 ALC D

22 = 100 ALC DACP

The

voltage

the

assembly

down.

assemblies

=

8

=10

=

20

=

40

, sequentially probe pins 5, 6, 8, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21,

If

,

Group

that

no

change

replace

ALC

ALC

ALC

ALC

will

is

the

D

A

DA

D

A

D

A

AC MSB check, value = 512

the

change

loading

is

noted

ABUS

Description

C

MSB

C

MSB

C

MSB

C

MSB

olarity

ABUS

to

a

the

after

cable

check,

check,

check,

check,

cable

from

non-negative

ABUS

down.

the

ABUS

.

value

= 8192

value

=

value

=

value

=

procedure \ALC Board

4096

2048

1024

each

value

Replace

cable

of

the

when

the

has

other

the

assembly

been

ABUS

3. Sequentially probe pins 5, 6, 8, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, and 26 of J2 on the

microprocessor assembly (A3). Preset the instrument while probing each pin. If activity is

1-26 Troubleshooting

not

seen

seen on

on all

one or

pins,

more of

replace

these pins

the

data

cable

,

replace

(W9).

the

microprocessor

assembly

Troubleshooting

.

If

activity

is

Integrator

Errors

Integrator Errors

If

these

T

o

remedy

Leveled

errors

are

generated,

the

failure

Indicator

Error

23 =

23

=

Group

10

100

(Revision 10.01

Integrator/External Mode

Integrator/Shutdown

and

Description

Above

Only)

Error Group Description

23

23

,

replace

Trip

Error

24

24

24

24

=

=

P

=

=

=

=

40

1000

the

the

oint

Group

8

100

2000

10000

Integrator/External

Integrator/Shutdown

self

test

has

isolated

ALC

assembly

.

Errors

Leveled

Leveled

Leveled

Leveled

indicator

indicator

indicator

indicator

the

Description

control

Mode

control

failure

trip

point

trip

point check

trip

point

trip

point

check

check

check

check

to

check

check

check

the

ALC

assembly

(A10).

Leveled

Indicator

Trip P

Error

24

24

24

24

oint Errors

Group

=

8

=

200

=

4000

=

20000

(Revision

Leveled

Leveled

Leveled

Leveled

10.01

Description

indicator

indicator

indicator

indicator

trip

trip

trip

trip

and

point

point

point

point

Above

check

check

check

check

Only)

If these errors are generated, the self test has isolated the failure to the ALC assembly (A10).

To remedy the failure

, replace the ALC assembly

.

RF/Reference Detector Errors

Error Group Description

25 = 8 RF Detector check

25 = 40 Reference detector/Ref osc. check

Troubleshooting 1-27

Troubleshooting

T

o Troubleshoot

1.

Install the

Assembly

2.

Set the

3.

Measure the

in

the

4.

Measure

a

voltmeter

space

5.

The

RF

volts

ALC assembly

A10" in

synthesizer frequency

power at

space

provided:

the

ALC

(connect

provided:

OUTPUT

and

0

3.1

the RF

Chapter 5

CTRL

should

V

.

Refer

Detector Check

in

the

service

of

this

to

2

the RF

OUTPUT

dBm

SIG

OUT

(1

the

voltmeter

V

be

>

8

dBm

to

the

following

position.

manual.

GHz

and

connector

to

20

ground

and

Error

set

GHz)

lead

the

table

the

at

to

ALC

to

determine

Refer

output

of

the

J3

pin

A3TP4).

CTRL

to

the

procedure

power

synthesizer

32

on

the

Record

SIG

OUT should

what

level

to

.

Record

ALC

assembly (A10)

the

voltage

be between

action to

\ALC

+10

take.

the

Board

dBm.

power

level

level

with

in

the

+1.85

Signal

RF

Within

OUTPUT

T

olerance?

ALC

CTRL

SIG

(Y/N)

OUT

A

Y Y Continue

Y N Replace

N Y Continue

N N Replace

6.

Measure

The

within

continue

7.

Check

ribbon

opened,

T

o

Troubleshoot

1.

Install

Assembly

2.

Set

3. Measure the reference oscillator output signal at J3

the

signal

tolerance

with

the

cable

replace

the

the

synthesizer

voltage

should

be

,

replace

the

continuity

has

continuity

the

the

ALC

assembly

A10"

in

at

J3

pin

between

the

next

step

of

W28,

ribbon

Reference

in

Chapter

frequency

8

with

a

voltmeter

0

0.200

volts

ALC

assembly

.

pin

8,

between

,

replace

cable

the

output

.

Detector/Reference

the

5

of

to

service

this

2

position.

manual.

GHz and

and

.

If

both

set the

(connect

0

0.020

the

signal

ends

module

the

volts

.

at

J3

of

the

(A8A1).

Oscillator

Refer to

the procedure

output power

pin 2 on the ALC assembly (A10) with

an oscilloscope (connect the oscilloscope ground lead to A3TP5). The

output signal should be 0.25 Vp-p

6

0.2 Vp-p at 1.2

MHz60.10 MHz.

ction.

with

procedure

ALC assembly

with

procedure

ALC

assembly

ground

If

pin

ALC

Check

the

If

signal

8

is

ribbon

the

lead

not

ribbon

Error

\ALC Board

level to

reference oscillator

.

.

.

.

to

A3TP4).

at

J3

pin

8

is

within tolerance

cable

.

If the

cable

is

+10 dBm.

,

If the reference oscillator output signal (J3 pin 2) is within tolerance

next step

. If the reference oscillator output signal is not within tolerance

, continue with the

, replace the ALC

assembly.

4. Measure the signal at J3 pin 5 with a voltmeter

. The signal should be between

0

0.1 volts

and 0.080 volts. If the signal at J3 pin 5 is within tolerance, replace the ALC assembly.If

the signal at J3 pin 5 is not within tolerance, continue with the next step.

5. Check the continuity of W28, pin 2, between both ends of the ALC ribbon cable and pin

5 between both ends of the cable. If the ribbon cable has continuity, replace the output

module (A8A1). If the ribbon cable is opened, replace the ribbon cable.

1-28 Troubleshooting

Troubleshooting

Input/Output

Input/Output

If

these

errors

T

o

remedy

Track

the

and

Hold Errors

Switching Errors

Error

Group

26/27 ALC

26/27 ALC input/output

26/27 ALC

Switching

are

generated,

failure

,

Error

26

=

26

=40

27

=

replace

Error

28 =

28

=

28

=

Errors

Group

8

8

the

the

Group

40

100

10000

(Revision

ALC

ALC

ALC

self

test

ALC

assembly

Track and

Track

Track

Description

input/output

switching check

switching check

input/output

10.01

switching

and

Above

Description

input/output

switching

input/output switching

input/output

has

isolated

switching

the

failure

.

Description

Hold Comparator

and

Hold

Comparator

and

Hold

Capacitor

check

Only)

check

check

check

to

check

check

check

the

ALC

assembly

(A10).

Track

If

T

o remedy

and Hold

these errors

Errors

are generated,

the failure

(Revision

Error

28

=

28

=

28

=

, replace

Group

40

4000

20000

the self

the ALC

10.01

Track

Track

Track

test

has

assembly.

and

Above

Description

and

Hold

and

Hold

and

Hold

isolated

Only)

Comparator

Comparator

Capacitor

the

failure

check

check

check

to

the

ALC

assembly

(A10).

Troubleshooting 1-29

Troubleshooting

Output

The

Module

following

error

Combiner/High

(A8A1)

groups

pertain

Band/Low

Troubleshooting

to

the

output

module

Error Group Description

29 =

Band

Error

29

=2

29

=

29 =

29

=

29

=

29

=80

29

=

29

=

29

=

Y

Errors

Group

4

8

20

40

200

400

800

Combiner Errors

High

Band

Low

Band

Description

1

GHz Combiner

1

GHz

Low

1 GHz

3

3

3

11

11

11

High

GHz

Combiner

GHz

Low

GHz High

GHz

Combiner

GHz

Low

GHz

High

.

Errors

Errors

check

Band

check

Band

check

check

Band

check

Band check

check

Band

check

Band

check

If

these

T

o

remedy

Note

errors

the

are

generated,

failure

Prior

within

the

,

replace

to

replacing

specication

self test

the ALC

the

at

has

assembly

ALC

assembly

the

power

isolated

.

,

connection

the

verify

failure

that

the power

to

the assembly

to

the

ALC

assembly

supply

.

(A10).

voltages

are

1-30 Troubleshooting

SLPF

The

following

A

(A8A3)

Troubleshooting

error

groups

pertain

to

the

switched

low

pass

lter

assembly

Troubleshooting

(SLPFA).

Input/Output

Bias

Error

30 =

31 =

Group

Y

or

Y

Description

Input Bias

Output Bias

Errors

Error Group Description

30

=

30

=

30

=10

30

=

30

=

30

=

30 =

30

=

30

=

30

=

30

=

30

=

30

=

30

=

31

=

31

=4

2

4

20

80

100

400

800

2000

4000

10000

20000

80000

100000

2

F

ailure

F

ailure

F

ailure at

F

ailure

F

ailure

F

ailure

Failure

F

ailure

F

ailure

F

ailure

F

ailure

F

ailure

F

ailure

F

ailure

F

ailure

F

ailure at

at

1.0

at

1.0 GHz,

1.65 GHz,

at

1.65

at

2.75

at

2.75

at 4.8

at

4.8

at

8.0 GHz,

at

8.0

at

10.0

at

10.0

at

12.8

at

12.8

at

.01

.01

GHz,

GHz, input

GHz,

GHz,

GHz,

GHz,

Errors

Errors

input

output bias

GHz,

GHz,

GHz,

output

input bias

output

GHz,

GHz,

GHz,

GHz,

input

output

input

output

input

output

input

output

input

output

bias

bias

bias

bias

bias

bias

bias

bias

bias

bias

bias

bias

bias

bias

1.

Install

Assembly

2. Set

3. Measure

voltmeter (connect

tolerance for each pin

the

the

synthesizer

the

ALC

A10"

voltage

assembly

in

Chapter

output

on

the

the voltmeter

is shown in the table

in

the

service

5

of

this

frequency

following

position.

manual.

to

the

pins

of

ground lead

.

Pin

failing

J3

on

to

Voltage

Refer

to

frequency

the

ALC

A3TP4).

the

procedure

indicated

assembly

The

expected

\ALC

by

(A10)

voltage

the

with

Board

self

a

and

Number

15

26

27 +7 V

28 +7 V

31

0

5.5 V

6

0.30 V

0

1.55 V

0

0.75 V60.75 V

6

6

0.30 V

6

0.30 V

0.35 V

If all voltages are within tolerance, continue with the next step. If any of the voltages are

out of tolerance, replace the ALC assembly.

Troubleshooting 1-31

test.

Troubleshooting

4. Check

the continuity

ribbon cable

cable,

If the

pin 26

ribbon cable

opened, replace

5. Set

the

synthesizer

the error

(W28). F

between both

the ribbon

number

received

of the

or example

has

continuity

frequency

and

Error

30

30 =

30

30

30

30

30

30

30 =

30

30

30

30

30

pins shown

, check

ends of

cable

to

.

the

the

,

continue

measure

F

ailed

Number

=

2

4

=

10

=

20

=

80

=

100

=

400

=

800

2000

=

4000

=

10000

=

20000

= 80000

=

100000

in

the

the

continuity

cable

,

with

frequency

the

voltage

Frequency Pin

1.0

1.0 GHz 39

1.65

1.65

2.75

2.75

4.8

4.8

8.0 GHz 25

8.0

10.0

10.0

12.8

12.8

above

etc

.

the

shown

GHz

GHz

GHz

GHz

GHz

GHz

GHz

GHz

GHz

GHz

GHz

GHz

table

next

in

at

between

of

pin

step

the

the

pin

Number

39

30

30

13

13

14

14

25

25

25

23

23

both

15

between

.

If

the

following

of

J3

indicated

ends

both

ribbon

table

of

the

ALC

ends

of

cable

is

depending

in

the

table

the

on

.

The

voltage

If

the

tolerance

6. Check

ribbon

13

between

If

the

opened,

7.

Measure

The voltage on both pins 21 and 22 should be between 10 V and 16 V

If the voltages are within tolerance

of tolerance

on

the

J3

pin

should

voltage

the

cable

ribbon

is

,

replace

continuity

.

F

both

cable

replace

the

voltages

within

the

or

example

ends

the

tolerance

ALC

between

of

has

continuity

ribbon

on

assembly

,

if

the

cable

pins

, continue with the next step

be

between

,

continue

10

with

V

the

and

next

16

V

step

at

.

the

If

the

indicated

voltage

frequency

.

the

pin

error

cable

shown

number

,

etc

.

,

continue

in

\30

with

the

=

80"

the

above

next

table

at

is reported,

step

.

If the

both

ends

check continuity

ribbon cable

.

21

and

22

of

J3

on

the

ALC

assembly

.

.

, continue with step 9. If either of the voltages are out

.

is

of

out

the

.

of

ALC

of pin

is

8. Check the continuity of W28, pin 21, between both ends of the ALC ribbon cable and pin

22 between both ends of the

If the ribbon cable is opened, replace

cable. If the ribbon cable has continuity

the ribbon cable

.

, replace the SLPF

A.

9. Use the direct control function to cause the analog multiplexer (U35) on the ALC assembly

(A10) to switch the suspected SLPFA switching voltage to its output. Direct control

information is shown in the following table.

1-32 Troubleshooting

Troubleshooting

F

a.

b.

c.

d.

or

Press

Press

Press

Press

example,

4

SPCL

4

60

4

11

5

4

6

if error

5

.

5

on

5

on

on

the

the

the

F

Error

30

=2

30

=

30 =

30

=20

30

=

30 =

30

=

30

=

30 =

30

=

30

=

30

=

30

=

30

=

31

=

31 =

number

numeric

numeric

numeric

ailed

Number

4

10

80

100

400

800

2000

4000

10000

20000

80000

100000

2

4

keypad,

keypad,

keypad,

HW

CTRL

ADDRESS

HW

V

CTRL

ALUE

(max/min)

11 6 2.415

11 7 2.415

11 6 2.415 V/1.509

11 7 2.415

11 6 2.415

11 7 2.415 V/1.509

11 6 2.415

11 7 2.415

11 6 2.415 V/1.509

11 7 2.415

11 6 2.415

11 7 2.415

11 6 2.415

11 7 2.415

11 6 0.301

11 7 2.415 V/1.509

30

=

2

was

then

then

then

returned

terminate

terminate

terminate

in

response

the

the

the

entry

entry

entry

V

oltage

V/1.509 V

V/1.509

V/1.509 V

V/1.509

V/1.509

V/1.509

V/1.509

V/1.509

V/1.509

V/1.509

V/1.509

V/

0

0.30

to

the

by

pressing

by

pressing

by

pressing

self

V

V

V

V

V

V

V

V

V

V

V

V

V

V

test:

4

5

4

Hz

5

4

Hz

5

(ENTER).

Hz

(ENTER).

(ENTER).

10.

Measure

tolerance

tolerance

11.

Measure

tolerance

assembly

ohmmeter

Note

the

voltage

shown

,

continue

the

voltage

shown

.

If

it

and

Prior

are

in

the

with

in

the

is

within

replace

to

replacing

within

at

TP6

on

table

,

the

next

at

TP9

on

table

.

tolerance

it

if

necessary

specication

the

microprocessor

replace

step

the

ALC

If

it

is

missing

,check

.

an

assembly

at

the

microprocessor

.

assembly

or

the continuity

or

module

the

power

assembly

assembly

.

The

voltage

isn't

within

of the

,

verify that

connection to

.

If

the

.

should

tolerance,

ABUS

the power

the assembly

voltage

If

it

is

missing

be

within the

replace the

cable

is

within

the

or out

ALC

(W9)

with

an

supply voltages

or module

.

of

Troubleshooting 1-33

Troubleshooting

Y

O

The

Loop

following

and

error

Note

Oset

groups

Prior

to

replacing an

are within

Synthesizer

pertain

to

the

Assembly

Y

O

loop

and

(A7)

oset

Error Group Description

32 =

Y

33

=

Y

34

=

Y

specication at

YO

Loop Unlocked

LO

Synthesizer

assembly or

the

power

Unlocked

module,

connection

Errors

verify

Troubleshooting

synthesizer assembly

Errors

that

the

power

to

the

assembly

.

supply

or

module

voltages

.

1-34 Troubleshooting

Troubleshooting

Error

32

=

32 =

32 =

32

=

32

=400

32

=

32 =

32

=

32

=

32

=

33

=

33 =

33

=

33

=

33

=

33

=100

33

=

33

=

33

=

33

=

33

=

33

= 20000

33

=

33

=

34

=

34

=

34

=

34

=

34 =

34

=100

34

=

34

=800

Group

4

10

40

100

1000

4000

10000

40000

100000

2

4

10

20

80

400

800

2000

4000

10000

80000

100000

2

4

10

20

80

400

Y

O

Loop

YO

Loop unlocked

YO

Loop

Y

O

Loop

Y

O Loop

Y

O

Loop

YO

Loop unlocked

Y

O

Loop

Y

O

Loop

Y

O

Loop

Y

O

Loop

LO Synth

Y

O

Loop

LO

Synth

Y

O

Loop

LO

Synth Unlocked

Y

O

Loop

LO

Synth

Y

O

Loop

LO

Synth

Y

O

Loop

LO

Synth Unlocked

Y

O

Loop

LO

Synth

Y

O

Loop

LO

Synth

Y

O

Loop

LO

Synth

YO

Loop

LO

Synth Unlocked

Y

O

Loop

LO

Synth Unlocked

Description

unlocked

at

at 14.749

unlocked

unlocked

at

at

unlocked at

unlocked

at

at 13

unlocked

unlocked

unlocked

at

at

at

Unlocked

Unlocked at

Unlocked

Unlocked

Unlocked

Unlocked

Unlocked

Unlocked

Unlocked

Unlocked

Unlocked

Unlocked

Unlocked

Unlocked

Unlocked

Unlocked

Unlocked

Unlocked

13

MHz

14.75

19.499 MHz

19.5

MHz

26.5

MHz

MHz

26.5

MHz

19.5 MHz

19.499

at

2.385

2.385

at

2.121

at 2.121

at

2.156

at 2.156

at 2.191

at

2.191

at

2.226

at

2.226

at

2.261

at

2.261

at

2.296

at

2.296 GHz

at

2.023

at

2.023

at

2.025

at

2.025

at

2.055

at 2.055

at

2.085

at 2.085

MHz

MHz

MHz

GHz

GHz

GHz

GHz

GHz

GHz

GHz

GHz

GHz

GHz

GHz

GHz

GHz

GHz

GHz

GHz

GHz

GHz

GHz

GHz

GHz

34 = 2000 YO Loop Unlocked at 2.115 GHz

34 = 4000 LO Synth Unlocked at 2.115 GHz

34 = 10000 YO Loop Unlocked at 2.385 GHz

34 = 20000 LO Synth Unlocked at 2.385 GHz

34

= 80000

Y

O Loop Unlocked at 2.115 GHz

34 = 100000 LO Synth Unlocked at 2.115 GHz

Troubleshooting 1-35

Troubleshooting

T

o Troubleshoot

1.

If the

error number

etc

.) go

to the

in

this chapter

(33

=2,

33 =

2.

Set

the

output

3.

Set

the

oset

message

F

or

received

example

aY

OLoop

procedure

.If

the

10,

etc

frequency

synthesizer

(14.749

,

to

set

Unlocked Condition

received

error

.)

the

is

\LO

number

go

to

step

of

the

frequency

MHz

oset

synthesizer

for

Synthesizer

synthesizer

if

the

an

LO

received

5,

otherwise

of

the

error

-

General

synthesizer

and

Reference

is

for

,

continue

to

1

GHz.

synthesizer

message

frequency

Procedure

Unlocked

Assembly

a

\Y

O

with

to

received

to

14.749

Loop

the

frequency

is

error

(A6)

unlocked

the

next

32

=

MHz:

(33

=

4,

33 =

Troubleshooting"

at

XXX

step.

10,

shown

etc

in

.).

20,

GHz" error

the

error

a.

b.

c.

d.

4.

Go

5.

Set

received

6.

Clear

When

a.

b.

c.

d.

7.

Connect

(connect

8.

V

erify

high,

in

9.

Open the

Driver

Press

4

SPCL

Press

4

63

Press

4

14.749

Press

4

MHz

to

step

6

the

output

(2.385

any

unlock

the

frequency

Press

4

SPCL

Press

4

60

Press

4

74

Press

the

5

4

1

a

voltmeter

the

that

continue

Y

O

loop

connection

assembly using

5

.

5

on

the

5

on

5

to

to

continue

frequency

GHz

5

.

5

on

the

5

on

the

on

the

voltmeter

the

voltage at

with

and oset

numeric

the

numeric

complete

.

if

the

condition.

is

changed,

numeric

numeric

numeric

to J3

ground

the

next

between

the

keypad,

the

of

the

error

keypad,

keypad,

keypad,

pin

2

J3 pin

step.

synthesizer assembly

the

following

then

keypad.

entry

.

synthesizer

message

an

undesirable

then

then

then

on

the

lead

to A3TP4).

2

remains

If the

Y

O

loop

steps:

terminate

to

received

terminate

terminate

terminate

Y

O

loop

at

TTL

and

the

frequency

is

unlock

and

a

TTL

voltage

or

anywhere

oset

the

entry

33

=

2,

condition

the

entry

the

entry

the

entry

oset

synthesizer

low

level.

level

is

synthesizer

by

pressing

shown

etc

.).

can

by pressing

by

pressing

by

pressing

If

the

low

,

there

else

in

the

assembly

in

the

occur

4

assembly

TTL

voltage

is

no

Y

O

5

(ENTER).

4

Hz

error

message

momentarily

5

(ENTER).

4

Hz

5

(ENTER).

4

Hz

5

(ENTER).

Hz

(A7)

level

trouble

loop

.

and

the

YIG

.

is

found

a.

Press

b.

Press

c.

Press

d.

Press

10. Disconnect W2 from J106 on the Y

11. Using a spectrum analyzer

MHz and the power level is between

>014 dBc

If the signal at W2 is correct, continue with step 14. If the signal is incorrect or missing,

continue with the next step

12. Disconnect W2 from the sampler (A8T1) IF OUTPUT.

13. Measure the signal at the sampler IF OUTPUT using the spectrum analyzer. The

fundamental signal should be between 5 and 140 MHz and the power level should be

between036 and +2 dBm with all harmonics>0

If the signal is correct, replace W2. If the signal is incorrect, continue with the next step.

1-36 Troubleshooting

4

SPCL

4

60

4

57

4

98

.

5

5

on the

5

on

5

on

.

numeric keypad,

the

numeric

the

numeric

then

terminate

keypad,

keypad,

, verify that the fundamental signal at

.

then

terminate

then

terminate

O loop and

0

36 and +2 dBm. Also

oset synthesizer assembly

the

the

the

14 dBc.

entry

entry

entry

check that all harmonics are

5

.

4

Hz

5

4

Hz

5

4

Hz

(ENTER).

(ENTER).

(ENTER).

by

pressing

by

pressing

by

pressing

W2 is between 5 and 140

Troubleshooting

14. Disconnect

analyzer.

15. V

erify that

between 11

If the

signal at

Unlocked Condition

continue with

16.

Disconnect

17.

Measure

and

If

the

350

signal

the

MHz

synthesizer

W1 from

the

frequency

and 13

W1

the

next

W1

from

signal

and

the

at

J7

is

and

reference

the sampler

at

dBm.

is

correct,

-

Output

step

J7

on

at

J7

using

power

correct,

assembly

LO INPUT

W1

is

between

continue

Frequencies

.

the

LO

synthesizer

the

spectrum

level

should

replace

.

W1.

with

be

If

and

300

the

<

10

analyzer

between

the

connect

and

350

procedure

GHz."

and

reference

.

signal

If

The

11

at

it

MHz

the

and

J7

to

the

and

\T

o

Troubleshoot

signal

assembly

signal

should

13

dBm.

is

incorrect,

input

of

the power

at

W1

is

(A6).

be

replace

a

spectrum

level is

a

Y

O

incorrect,

between

the LO

Loop

300

Troubleshooting 1-37

Troubleshooting

T

o Troubleshoot

1.

Reconnect W1

2.

Disconnect W40

3.

Measure the

0

23.5 dBm.

If

the

signal

continue

4.

Disconnect

5.

Measure

level

If

the

If

the

6.

Disconnect

7.

Measure

If

the

the

8.

Disconnect

should

signal

signal

signal

next

with

W40

the

W39

the

step

W39

aY

OLoop

between J7

from the

signal at

at

W40

the

next

from

signal

be

at

at

signal

is

between

the

the

from

correct,

.

from

at

SAMPLER

SAMPLER

at

Unlocked Condition

and

the

sampler

W40

using

a

is

correct,

step

the

the

the

W39

replace

the

replace

.

SAMPLER

SAMPLER

0

and

0

OUT

OUT

2

-

10

GHZ

using

the

output

23.5

a

of

sampler

RF

INPUT

power

connector

connector

power

output

the

OUT

OUT

dBm.

IN

the

meter

connector

connector

connector

meter

2

to 10

-

LO

INPUT

.

.

sampler

is

correct,

is

incorrect,

.

module

GHz YIG

Output

.

The

power

.

If

on

using

on

the output

The

power

.

If

the

Frequencies

level

the

signal

the

output

the

power

replace

continue

level

signal

oscillator

should

at

W40

module

meter

W40.

with

module.

should

is

incorrect,

(A8G1).

<

10

GHz

be

between

is incorrect,

(A8A1).

.

The power

the

next

be

>

15

continue with

step.

dBm.

0

and

9.

Measure

analyzer

front

T

ake

two

10. Turn on FM:

a. Press

b. Press

c.

d.

e. Press

11. Set FM coupling to DC:

the

signal

.

The

panel

and

the

action

columns

Frequency P

Correct Incorrect Check

Incorrect Incorrect Check

Correct Correct Continue

Incorrect Correct Continue

4

SPCL

5

on the numeric keypad, then terminate the entry by pressing

4

60

Use the keys to select

5

Press

on the numeric keypad, then terminate the entry by pressing

4

62

5

for

4

1

at

frequency

the

power

shown in

of

the

table

ower

Level

5

.

the hardware control value and press

the

output

should

the

.

HCA

of

the

2to

10 GHz

be

within

level

should

following

power

oscillator

power

oscillator

(hardware control address) from the display

plus-or-minus

be

>

15

table

to

,

power

to

,

power

with

the

with

step

depending

the

cable

the

cable

dBm.

2

2

next

26.

YIG

oscillator

8

MHz

on

A

ction

to

10

GHz

,

or

power

to

10 GHz

,

or

power supply

step

.

5

(ENTER).

4

Hz

the

YIG

YIG oscillator

using

of

the frequency

conditions

oscillator

supply

if

if necessary

a

spectrum

shown

and

necessary

and replace

5

(ENTER).

4

Hz

.

5

(ENTER).

4

Hz

set

via

in

the

replace

.

.

the

rst

a. Press

b. Use the up/down arrow keys to select

c. Press

d. Press

12. Connect a function generator to A7J101 (FM IN).

1-38 Troubleshooting

4605

on the numeric keypad, then terminate the entry by pressing

HCA

(hardware control address) from the display.

4645

on the numeric keypad, then terminate the entry by pressing

415

for the hardware control value and press

4Hz5

(ENTER).

4Hz5

4Hz5

(ENTER).

(ENTER).

Troubleshooting

13. Set

14. Connect

15. Disconnect

16.

17.

18.

19.

20.

21.

22.

the function

a spectrum

The spectrum

go to

step 24.

synthesizer

Disconnect

voltage

Measure

If

tolerance

Set

Measure

If

tolerance

Disconnect

Check

the

Disconnect

with

Replacement."

the

the

voltage

the

voltage

the

next

the

source

the

,

voltage

the

,

step

next

generator to

analyzer

analyzer display

If

an

FM

W5 from

assembly

the

voltage

is

replace

voltage

is

replace

W4

continuity

.

the

step

.

function

to

+2

at

within

the

source

at

within

the

from

If

W4

2

to

10

.

Disassembly

generate a

to

the

should

pattern

J103 and

generator

Vdc

.

J104.

tolerance

Y

O

to

J104.

tolerance

Y

O

J2

on

of

W4

is

opened, replace

GHz

is

disconnect

The

,

loop

and

0

2

Vdc

.

The

,

loop

and

the

Two

with

YIG oscillator

of

output

show

not

displayed,

and

connect

voltage

continue

oset

voltage

continue

oset

YIG

an

ohmmeter

the

YIG

sine

wave

of

the

an

FM

W4

from

a

should

with

synthesizer

should

with

synthesizer

assembly

.

W4.

from the

oscillator is

at

100

2

to

pattern.

continue

J104

voltage

be

0.45

the

next

assembly

be

0

0.45

the

next

assembly

(A8A4)

If

the

cable

Two

kHz

10

GHz

If

with

on

the

source

volts

step

.

volts

step

.

and

has continuity

YIG

assembly

described

at

2

Vp-p

YIG

oscillator.

an

FM

the

next

Y

O

loop

to

A7J101

6

0.05

If the

.

6

0.05

If

the

.

continue

in

.

pattern

step

and

volts

.

voltage is

volts.

voltage

with the

, continue

(A8A4)

Chapter

is

displayed,

.

oset

(FM

IN).

out of

is

out

and

5,

\Assembly

Set

of

next step

with

continue

the

.

23.

Check

(details

If

If

24. Turn o FM:

a. Press

b. Press

c. Use the up/down arrow keys to select

d. Press

e. Press

25. Set FM coupling to A

a. Press

b. Use the up/down arrow keys to select

c. Press

d. Press

the continuity

are

shown

the connections

the connections

5

.

4

SPCL

5

on the numeric keypad, then terminate

4

60

5

on the numeric keypad, then terminate the entry by pressing

4

62

5

for the hardware control value and press

4

0

4605

on the numeric keypad, then terminate the entry by pressing

4645

on the numeric keypad, then terminate the entry by pressing

405

for the hardware control value and press

of

in the

on the

on the

C:

the

connections

following

Two YIG

Two YIG

on

table).

T

able

1-2.

J2

(center

J2

(outer

assembly

assembly are

the

Two

YIG

assembly

YIG Continuity

From T

conductor)

conductor)

have

continuity

opened, replace

HCA

(hardware control address) from the display

HCA

(hardware control address) from the display.

o

E6

E5

,

the entry by pressing

5

(ENTER).

4

Hz

4Hz5

(ENTER).

with

continue

the

with

Two

an

ohmmeter

the

YIG

4

Hz

4

Hz

4Hz5

4Hz5

assembly

5

(ENTER).

5

(ENTER).

(ENTER).

(ENTER).

next

step

.

.

.

26. Connect a signal generator to J106 on the YO loop and oset synthesizer assembly.

Troubleshooting 1-39

Troubleshooting

27. Set

the oset

frequency to

28. Probe

TP27 (under

a voltmeter

continue with

synthesizer assembly

29. Set

30. Probe

the

external

TP27.

continue with

synthesizer assembly

31.

32.

33.

Check

W8

Set

Open

Driver

a.

b. Press

c. Press

d. Press

the

has

the

the

assembly

Press

continuity

continuity

synthesizer

connection

4

SPCL

4

60

4

57

4

98

Note

synthesizer frequency

25 MHz

.The

the next

at a

YO

Loop shield)

voltage at

step.

power level

TP27 should

.

signal

The

the

generator

voltage

next

at

step

TP27

.

.

of

W8,

,

replace

output

the

frequency

between

using

the

following

5

.

5

on

the

numeric

5

on

the numeric

5

on

the numeric

Before

for two

making

hours

the

.

If the

frequency

should

If

the

pin

1,

YIG

the

Y

keypad,

keypad,

keypad,

following

to 20

of

0

on

the

be

voltage

be

voltage

between

Driver

to

2

GHz.

O

loop

steps:

then

then

then

measurement,

MHz and

10 dBm.

Y

O

loop

+10

volts

is

incorrect,

to

15

MHz.

0

10

volts

is

incorrect,

both

ends

assembly

and

oset

terminate

terminate

terminate

set the

and

oset

6

1

volt.

replace

6

1

volt.

replace

of

the

.

If

W8

synthesizer

the

entry

the

entry

the

entry

allow

external

signal

synthesizer

If

the

voltage

the

Y

O

If

the

voltage

the

Y

O

cable

with

is

opened,

assembly

by

pressing

by

pressing

by

pressing

the synthesizer

generator

assembly

loop

loop

an

replace

and

4

Hz

4

Hz

4

Hz

with

is

correct,

and

oset

is

correct,

and

oset

ohmmeter

W8.

the

YIG

5

(ENTER).

5

(ENTER).

5

(ENTER).

to warm-up

.If

34.

Measure

6

0.14

If

the

the

35.

Set

36.

Open

Driver assembly

37. Measure

6

0.47

If

the

the

V

.

voltage

YIG

Driver

the

synthesizer

the

the voltage

V.

voltage

voltage

is

correct,

assembly

connection

.

is

correct,

at

TP5

on

the

YIG

continue

with the

.

output frequency

between

at TP5

on

check

the

the

the

YO

YIG

Driver

next step

to 9

GHz.

loop and

Driver

continuity

assembly

.

oset synthesizer

assembly

of

W27

ends of the cable with an ohmmeter and replace it if necessary

replace the YIG Driver assembly

Note

If this troubleshooting procedure has determined that an assembly or module

.

is functioning correctly but the self test still fails

the assembly

replace the assembly

or module is likely in the self-test circuitry

or module to restore self test functionality

.

If

.

pin

The

voltage should

the

The

13

voltage

voltage

and

is

incorrect,

assembly

should

W27

pin

and

14

. If the voltage is incorrect,

, the only malfunction on

.Y

ou can optionally

.

be

37.7

replace

the

be

32.2

between

V

YIG

V

both

1-40 Troubleshooting

Troubleshooting

Sampler

The

following

Note

LO

Unlocked

(A8T1)

error

Prior

are

Errors

Troubleshooting

groups

pertain

to

the

Sampler:

Error Group Description

35 =

to

replacing

within

Y

specication

LO Unlocked

Oset

Y

O

Loop

an

assembly

at

Synthesizer

Unlocked

or

module,

the

power

Errors

connection to

Error Group Description

35

=

35

=

35

=

35 =

35

=

4

40

400

4000

40000

LO

unlocked

LO

unlocked

LO

unlocked

LO unlocked

LO

unlocked

Unlocked

Errors

verify that

at

5.0

GHz

at

9.9

GHz

at

10.0 GHz

at 15.0

at

20.0

Errors

the power

the assembly

GHz

GHz

supply

voltages

or module

.

1.

Install

procedure

this

2.

Connect

voltmeter

3.

Set

more

specied).

4.

V

erify

2

remains

correctly

assembly

Note

the

manual.

a

the

synthesizer

than

that

.

.

LO

synthesizer

\LO

(Local

voltmeter

ground

lead

output

one

frequency

the

voltage

at

a

TTL

high

If

the

voltage

If

this

reference assembly is functioning correctly but the self test still

only malfunction on the assembly is likely in the self-test

and

reference

Oscillator)

to

P1

to

A3TP4).

Synthesizer/Reference

pin

2

on

frequency

point

failed,

at

P1

pin 2

level,

the

at

P1

pin

troubleshooting

assembly

the

LO

synthesizer

to

the

frequency

set

the

output

remains at

aTTL

LO synthesizer

2is

incorrect, replace

procedure

has

in

the

service

Board

and

reference

specied

frequency

high

level.

and reference

the LO

determined

position.

Assembly

Refer

A6"

assembly

in

the

error

to

the

lowest

If

the

voltage

assembly is

synthesizer and

that

the

LO

circuitry.Y

to

the

in

Chapter

(connect

message

frequency

at

P1

pin

functioning

reference

synthesizer

fails, the

ou can

optionally replace the microprocessor assembly to restore self test functionality

(if

5

the

and

of

.

Troubleshooting 1-41

Troubleshooting

Oset

1.

Install

procedure

this

2.

Connect

voltmeter

3.

Set

more

specied).

4.

V

erify

remains

correctly

assembly

Synthesizer Unlocked

the

Y

\Y

O

loop

O

Error

35

35

35

35

35

(YIG

Group

=

8

=

80

=

800

= 8000

=

80000

and

oset

Oscillator)

manual.

a

the

synthesizer

than

that

at

.

voltmeter

ground

one

the

a

TTL

If

the

to

lead

to

output

frequency

voltage

high

at

level,

voltage

J3

A3TP4).

point

J3

at

.

Errors

Oset

Oset

Oset

Oset

Oset

synthesizer

Loop/Oset

pin

2

on

frequency

failed,

pin

2

remains

the

Y

O

J3

pin

2

Description

Synthesizer

Synthesizer

Synthesizer

unlocked at

unlocked

unlocked

Synthesizer unlocked

Synthesizer

assembly

unlocked

in

Synthesizer

the

Y

O

loop

and

to

the

frequency

set

the

output

at

a

TTL

loop

and

oset

synthesizer

is

incorrect,

replace

5.0 GHz

at

9.9

GHz

at

10.0

at

15.0

at

20.0

the

service

Board

position.

Assembly

oset synthesizer

specied

frequency

high

level. If

in

the

to

the

the voltage

assembly

the

Y

O

loop

GHz

GHz

GHz

Refer

to

A7"

in

Chapter

assembly (connect

error

message

lowest

frequency

at J3

is

functioning

and

oset synthesizer

the

(if

pin 2

5

of

the

Note

Y

O Loop

troubleshooting

synthesizer

assembly

malfunction

Y

O

loop

and

can

optionally

assembly

or

Unlocked Errors

Error

35

35

35

on

the

oset

isolate

microprocessor

Group

=

10

=

100

=

1000

procedure

is

functioning

assembly

synthesizer

and

replace

assembly

Y

O

Loop

Y

O

Loop

Y

O

Loop

has

determined

correctly

is

likely

in

assembly or

either

to

Description

unlocked

unlocked

unlocked

the

self-test

the

the Y

restore

at

at

at

that

the

but

the

self

circuitry

microprocessor

O

loop

and

self test

5.0

9.9

10.0

GHz

GHz

functionality.

GHz

Y

O

test

oset

loop

and

still

fails

on

either

assembly

synthesizer

If

this

35 = 10000 YO Loop unlocked at 15.0 GHz

35 = 100000 YO Loop unlocked at 20.0 GHz

To Troubleshoot a Y

1. Set the output frequency of the synthesizer to the frequency

received (5.0 GHz if the error message received is 35 =

O Loop Unlocked Condition

- General Procedure

shown in the error message

10, etc

.).

2. Clear any unlock condition.

When the frequency is changed, an undesirable unlock condition can occur momentarily.

oset

,

the

the

.

Y

only

ou

a. Press

b. Press

c. Press

d. Press

4

SPCL

4605

4745

415

on the numeric keypad, then terminate the entry by pressing

1-42 Troubleshooting

5

.

on the numeric keypad, then terminate the entry by pressing

on the numeric keypad, then terminate the entry by pressing

4Hz5

4Hz5

4Hz5

(ENTER).

(ENTER).

(ENTER).

3.

Connect

(connect

4.

V

high,

in

5.

Open

Driver

erify

the

a

voltmeter to

the

voltmeter

that the

continue

Y

O

the

assembly

voltage at

with

loop

and oset

connection between

.

J3 pin

ground lead

the

next

2on

J3 pin

synthesizer assembly

2 remains

step.

the Y

the Y

Oloop

to A3TP4).

If the

TTL voltage

O loop

and oset

and oset

at a

TTL low

or anywhere

synthesizer assembly

level. If

level is

synthesizer

low,

else in

the

there is

assembly

TTL

the Y

Troubleshooting

(A7)

voltage

no

Oloop

and

level

trouble

.

the

found

YIG

is

a.

Press

b.

Press

c.

Press

d.

Press

6.

Disconnect W2

7.

Using a

MHz

>

0

14

If

the

continue

8.

Disconnect

9.

Measure

fundamental

between

If

the

10.

Disconnect

analyzer

11.

V

erify

between

If

the

continue with

5

.

4

SPCL

5

on

4

4

4

spectrum analyzer

and the

dBc

signal

with

the

0

signal

.

that

11

signal

the

60

5

on the

57

5

on the

98

from J106

power level

.

at

W2

the

next

W2

from

signal

signal

36

and

+2

is

correct,

W1

from the

the frequency

and

13

at

W1

the

next

numeric

numeric keypad,

numeric keypad,

is

correct,

the

at

the

should

dBm

dBm.

is

correct,

keypad,

on the

, verify

is between

step

.

sampler

sampler

be

with

replace

sampler

at

W1

step

.

YO

continue

(A8T1)

between

all

W2.

LO

is

continue

then terminate

then terminate

then terminate

loop

and

that the

IF

harmonics

If

between

fundamental

0

36

and

with

IF

OUTPUT

OUTPUT using

5

and

the

signal

INPUT

300

with

oset

+2

dBm.

step

10.

140

MHz and

>

0

14

is incorrect,

and

connect

and

step

14.

the entry

the

the entry

synthesizer

signal

Also

If

the

.

the spectrum

dBc

.

350

If

the

by pressing

entry

by

by

at

check

signal

the power

continue

it

to

the

MHz

and

signal

pressing

pressing

assembly

W2

is

between

that

is

incorrect

analyzer

level

with

input

the

power

at

W1

4

Hz

4

Hz

4

Hz

.

all

harmonics

.

The

should

the

of

a

spectrum

is

incorrect,

5

(ENTER).

5

(ENTER).

5

(ENTER).

5

and

or

missing,

be

next

level

is

140

are

step

.

12. Disconnect

13. Measure

and 350

If

the

synthesizer

14. If the output frequency is less than 10

aYO Loop Unlocked Condition - Output Frequencies

greater than or equal to 10 GHz, continue with the procedure \T

Unlocked Condition - Output Frequencies

To Troubleshoot a Y

1. Reconnect W1 between J7 and the sampler LO INPUT

2. Disconnect W40 from the sampler RF INPUT.

3. Measure the signal at W40 using a power meter. The power level should be between 0 and

0

23.5 dBm.

If the signal at W40 is correct, replace the sampler. If the signal at W40 is incorrect,

continue with the next step.

the signal

MHz and

signal

W1

from

J7

on

the

LO

synthesizer

at

J7

using

the

spectrum

the

power

at

J7

is

correct,

and

reference

O Loop Unlocked Condition - Output Frequencies

level

replace

assembly

should

W1.

.

GHz, continue with the procedure \T

and

analyzer

be

between

If

the



10 GHz."

reference

.

The

11

signal at

<

10 GHz." If the output frequency is

.

assembly

signal

and

J7 is

should

13

dBm.

incorrect, replace

o Troubleshoot a Y

(A6).

be

between

the LO

o Troubleshoot

<

10 GHz

Troubleshooting 1-43

300

O Loop

Troubleshooting

4. Disconnect

5. Measure

the signal

level should

If the

signal at

If the

signal at

6. Disconnect

7. Measure

If the

the next

the

signal

step.

8. Disconnect

9.

Measure

analyzer

front

T

ake

two

the

.

panel

the

action

columns

Frequency P

Correct Incorrect Check

Incorrect Incorrect Check

Correct Correct Continue

Incorrect Correct Continue

W40 from

be between

the SAMPLER

the SAMPLER

W39 from

signal

is

correct,

W39 from

signal

The

frequency

and

the

shown

of

the

the SAMPLER

at the

SAMPLER OUT

0 and

the 2

at

W39

using

replace

the

output

at

the

output

should

power

table

in

level

the

.

ower

Level

OUT connector

0

23.5

dBm.

OUT connector

OUT connector

-

10

GHz

IN

a

power

the

output

of

the

of

the

be

within

should

following

power

oscillator

,

power

power to

oscillator

,power

with

with

connector using

is

correct,

is incorrect,

connector

meter

module

2

to

2

to

10

10

.

The

GHz

GHz

on

.

plus-or-minus

be

>

15

dBm.

table

depending

to

the

2

to

cable

,

the

2

to

cable

,

the

next

step

26.

on the

the

power

If

the

YIG

YIG

10

or

10

or

step

output module

the power

replace

continue

output

level

signal

oscillator

oscillator

8

MHz

on

the

conditions

A

ction

GHz

YIG

power

power

GHz

supply

YIG

supply

.

W40.

with

module

should

is

incorrect,

(A8G1).

using

of

the

oscillator

oscillator

(A8A1).

meter

.

the

.

be

>

a

spectrum

frequency

shown

and

if

necessary

and

if

necessary

The

power

next

step

15

dBm.

continue

set

in

replace

.

replace

.

via

the

.

with

the

rst

10. Turn

11. Set

12. Connect a function

13. Set the function generator to generate a sine wave at 100 kHz at

14. Connect a spectrum analyzer to the output of the 2 to 10 GHz YIG

on FM:

a. Press

b. Press

c.

Use

the

d.

Press

e.

Press

FM coupling

a. Press

b.

Use the up/down arrow keys to select

c. Press

d. Press

5

.

4

SPCL

5

on

4

60

4

62

4

1

4

60

4

64

4

1

the numeric

up/down

5

on

5

for

5

on the numeric keypad, then terminate the entry by pressing

5

on

5

for

arrow

the

numeric

the

hardware

to

DC:

the numeric keypad, then terminate the entry by pressing

the hardware control value and press

keypad, then

keys

to

keypad,

control

generator to A7J101 (FM IN).

select

then

value

5

terminate

HCA

(hardware

terminate

and

HCA

(hardware control address) from the display

press

the

the

4

Hz

4

Hz

entry

by

control

entry

by

5

(ENTER).

5

(ENTER).

pressing

address)

pressing

2 Vp-p

.

4

Hz

from

4

Hz

4

Hz

4

Hz

(ENTER).

the

5

(ENTER).

5

(ENTER).

5

(ENTER).

oscillator.

The spectrum analyzer display should show an FM pattern. If an FM pattern is displayed,

go to step 24. If an FM pattern is not displayed, continue with the next step.

15. Disconnect W5 from J103 and disconnect W4 from J104 on the YO loop and oset

synthesizer assembly.

display

.

.

1-44 Troubleshooting

Troubleshooting

16. Disconnect

voltage source

17. Measure

If the

tolerance,

18. Set

19. Measure

If the

tolerance,

20. Disconnect

21.

Check

the

22.

Disconnect

with

Replacement."

23. Check

(details are

the voltage

voltage is

the voltage

the

voltage

the

next

step

the

next

the

the function

to +2

within tolerance

replace the

source to

voltage

is

within

replace

W4 from

continuity

the

continuity

shown in

.

If

2

step

the

W4

to

.

generator and

Vdc.

at J104.

YO

at

J104.

Y

J2

of

is

opened,

10

GHz

Disassembly

of

the

The voltage

loop and

0

2

Vdc

The

tolerance

O

loop

on

the

W4

with

YIG

the

connections

following

, continue

oset

.

voltage

,

continue

and

oset

Two

YIG

an

ohmmeter

replace

oscillator

of

the

table).

Table

J2

(center

J2

(outer

connect a

should

synthesizer

should

synthesizer

assembly

W4.

from

YIG

on

1-3.

From T

conductor)

voltage source

be

with

the

be

with

the

(A8A4)

.

If

the

the

oscillator

the

Two

YIG

Continuity

conductor)

0.45

next

assembly

0

0.45

next

assembly

cable

Two

YIG

is

described

YIG

E6

E5

volts

6

step

.

If

.

volts

step

.

If

.

and

continue

has

continuity

assembly

assembly

o

to A7J101

0.05

volts

the

voltage

6

0.05.

the

voltage

with

(A8A4)

in

Chapter

with

an

(FM

IN).

.

is

out

is

out

the

next

,

continue

and

5,

\Assembly

ohmmeter

Set

the

of

of

step

with

continue

.

If

the

connections

If the

connections

24. Turn

25.

26. Connect a signal generator to J106 on the

27. Set the oset synthesizer frequency to 20 MHz and

28. Probe TP27 (under the YO Loop shield) on the YO loop and oset synthesizer assembly with

29. Set the external signal generator frequency to 15 MHz.

o

FM:

a.

Press

4

SPCL

b.

Press

c.

Use

d.

Press

e.

Press

Set

FM

a. Press

b. Use the up/down arrow keys to select

c. Press

d. Press

frequency to 25 MHz at a power level of

a voltmeter. The voltage at TP27 should be +10 volts61 volt. If the voltage is correct,

continue with the next step. If the voltage is incorrect, replace the YO loop and oset

synthesizer assembly.

5

4

60

the

up/down

5

4

62

5

for

4

0

coupling

5

4

60

5

4

64

5

for the hardware control value and press

4

0

on

the

Two

YIG

assembly

on

the

Two

YIG

assembly

5

.

on

the

numeric

arrow

on

the

numeric

the

hardware

to

A

C:

on the numeric keypad, then terminate the entry by pressing

on the numeric keypad, then terminate the entry by pressing

keypad,

keys

keypad,

control

to

then

select

then

value

have

continuity

are

opened,

terminate

HCA

(hardware

terminate

and

HCA

(hardware control address) from the display

YO loop and oset synthesizer assembly

0

10

dBm.

the

the

press

4

4

set the external signal generator

replace

entry

control

entry

5

(ENTER).

Hz

5

(ENTER).

Hz

,

continue

the

by

address)

by

with

Two

pressing

pressing

the

YIG

4

Hz

from

4

Hz

4

Hz

4

Hz

next

assembly

5

(ENTER).

the

display

5

(ENTER).

5

(ENTER).

5

(ENTER).

.

step

.

.

.

.

Troubleshooting 1-45

Troubleshooting

30. Probe

TP27. The

continue with

synthesizer assembly

31. Check

the continuity

has continuity

32. Set

33. Open

the synthesizer

the

connection

Driver assembly

a. Press

b. Press

c.

d.

Press

Press

4

SPCL

4

60

4

57

4

98

Note

34.

35.

Measure

6

0.14

If

the

the

Set

the

V

.

voltage

YIG

Driver

the

synthesizer

voltage at

the next

.

of W8

, replace

the YIG

output frequency

between

using

the

5

.

5

on

the numeric

5

on

the

numeric

5

on

the

numeric

Before making

for two

voltage

is

correct,

hours.

at

assembly

output

TP27 should

step.

If the

pin 1

the

following

keypad,

keypad,

keypad,

the following

TP5

on

the

continue

.

frequency

be

0

voltage is

between

incorrect, replace

both

Driver assembly

to

2

GHz.

Y

O

loop

and

steps:

then

terminate

then

terminate

then

terminate

measurement, allow

YIG

Driver

with

the

next

to

9

GHz.

10 volts

ends

.

If

W8

oset

assembly

step

.

6

1

volt.

of

the

cable

is

opened,

synthesizer

the

entry

the

entry

the

entry

the synthesizer

.

The

voltage

If

the

voltage

If

the

the

with

replace

assembly

by

pressing

by

pressing

by

pressing

voltage

Y

O

loop

an

should

is

incorrect,

is

correct,

and

oset

ohmmeter

W8.

and

the

5

(ENTER).

4

Hz

5

(ENTER).

4

Hz

5

(ENTER).

4

Hz

to

warm-up

be

37.7

replace

.

YIG

V

If

W8

36.

Open

the

connection

Driver

37.

Measure

6

If

ends

replace

T

o

Troubleshoot

1. Reconnect

2. Disconnect

3. Measure

0

0.47

the

23.5

assembly

the

V

.

voltage

of

the

the

the signal

dBm.

voltage

is

cable

YIG

a

W1 between

W40 from

If the signal at W40 is correct, replace the sampler

continue with the next step

between

using

the

at

TP5

correct,

with

Driver

Y

O

check

an

ohmmeter and

assembly.

Loop Unlocked

J7

the sampler

at W40

the

Y

procedure

on

the

the continuity

and

the

RF

using a

power meter

.

O

loop

and

described

YIG

Driver

replace it

Condition -

sampler

LO

INPUT

oset

synthesizer

in

step

38.

assembly

of W27

.

pin

if

necessary

The

13

Output Frequencies

INPUT

.

.

.

The

power

.Ifthe

signal at W40 is incorrect,

assembly and

voltage

and

W27

.

If

level

should

should be

pin

the

voltage



10

14

GHz

be

between

between

4. Disconnect W40 from the SAMPLER OUT connector on the output module (A8A1).

5. Measure the signal at the SAMPLER OUT connector using the power meter

level

should be between 0 and

If the

signal at the SAMPLER OUT connector is correct, replace W40.

0

23.5 dBm.

. The power

If the signal at the SAMPLER OUT connector is incorrect, continue with the next step.

the

YIG

32.2

V

is

incorrect,

both

0

and

6. Disconnect W38 from the 10|20 GHZ IN connector on the output module.

7. Measure the signal at W38 using a power meter. The power level should be>15 dBm.

1-46 Troubleshooting

If

the signal

the

next step

8.

Disconnect W38

9.

Measure the

analyzer

front

T

ake

two

. The

panel

the

columns

is correct,

.

from the

signal at

frequency should

and

the

action

of

shown

the

replace the

the

power

in

the

table

.

output

output

level

following

output module

of

the

10

of

the

10

be

within

should

be

table

.

If

the

to

20

GHz

YIG

to

20

GHz

YIG

plus-or-minus

>

15

dBm.

depending

signal

oscillator

oscillator

8

MHz

on

the

is

incorrect,

(A8G2).

using

of

the

frequency

conditions

Troubleshooting

continue

a

spectrum

shown

set

in

via

the

with

rst

the

10.

11.

Frequency P

ower

Level

Correct Incorrect Check

oscillator

Incorrect Incorrect Check

oscillator

Correct Correct Continue with

Incorrect Correct Continue

Turn

on

FM:

a. Press

b. Press

c. Use

d.

Press

e.

Press

Set

FM

a.

Press

b.

Use

c.

Press

5

4

SPCL

5

on

4

60

the

up/down

5

4

on the

62

5

for

4

1

coupling

5

on

4

60

the

up/down

5

on

4

64

.

the

the

to

the

the

numeric

arrow

numeric

hardware

DC:

numeric

arrow

numeric

keypad,

keys

keypad,

control

keypad,

keys

keypad,

to

to

power

,

power

power

,

power cable

with

then

select

HCA

then

value

then

select

HCA

then

to

the

10

to

20

cable

,

or

power

to the

10 to

,or

the

next

step

26.

terminate

20 GHz

power supply

step

the

(hardware

terminate

and

terminate

press

the

4

the

Hz

(hardware control

terminate

the

A

ction

GHz

.

entry

control

entry

5

(ENTER).

entry

entry

YIG

oscillator

supply

if

necessary

YIG oscillator

if necessary

by

pressing

address)

by

pressing

by

pressing

address) from

by

pressing

and

and

4

Hz

from

4

Hz

4

Hz

4

Hz

replace

.

replace

.

5

(ENTER).

the

display

5

(ENTER).

5

(ENTER).

the display

5

(ENTER).

.

.

5

4

Hz

100

(ENTER).

kHz

at

2

YIG oscillator

Vp-p

.

.

12.

13.

d.

Press

Connect

Set

the

5

for

4

1

a

function

function

the

hardware

generator

generator

control

to

to

generate

value

A7J101

a

(FM

sine

and

IN).

wave

press

at

14. Connect a spectrum analyzer to the output of the 10 to 20 GHz

The spectrum analyzer display should show an FM pattern. If an FM pattern is displayed,

go to step 24. If an FM pattern is not displayed, continue with the next step

15.

Disconnect W5 from J103 and disconnect W4 from J104 on the Y

synthesizer assembly

16. Disconnect the

.

function generator and connect a voltage source to A7J101 (FM IN). Set the

O loop and oset

.

voltage source to +2 Vdc.

17. Measure the voltage at J103. The voltage should be 0.45 volts60.05 volts.

If the voltage is within tolerance, continue with the next step. If the voltage is out of

tolerance, replace the YO loop and oset synthesizer assembly.

18. Set the voltage source to02 Vdc.

Troubleshooting 1-47

Troubleshooting

19. Measure

If the

the voltage

voltage is

tolerance,

20. Disconnect

21. Check

the next

the continuity

step

22. Disconnect

the next

23. Check

step

the

(details are

If

the

connections

If

the

connections

24.

Turn

o FM:

within tolerance

replace the

W5 from

.

If

W5

the

10

to

.

continuity

shown in

on

on

at J103.

YO

loop and

J3 on

of W5

is

opened,

20

GHz

of

the

the

following

the

Two

the

Two

The voltage

, continue

oset

the Two

YIG

with an

replace

YIG

oscillator

connections

table).

T

able

J3 (center

J3

(outer

YIG

assembly

YIG

assembly

should be

with

synthesizer

assembly

ohmmeter.

W5.

from

on

the

1-4.

YIG

From T

conductor)

conductor)

have continuity

are opened,

0

0.45

the

next

assembly

(A8A4)

If

the

cable

the

Two

Two

YIG

Continuity

E12

E13

volts

6

0.05

step

.

If

the

.

and

continue

has

continuity

YIG

assembly

assembly

o

, continue

replace the

volts

voltage

with

with

with the

Two YIG

.

the

,

continue

and

continue

an

ohmmeter

is

out

of

next

next step

assembly.

step

with

with

.

.

a.

b.

c.

d.

e. Press

25. Set

a.

b.

c.

d.

26.

Connect

Press

Press

Use

Press

FM

Press

Use

Press

Press

the

the

5

4

SPCL

5

on

4

60

up/down

5

on

4

62

5

for

4

0

coupling

5

on

4

60

up/down

5

on

4

64

5

for

4

0

a

signal

.

the

numeric

the

numeric

the

hardware

to

A

the

numeric

the

numeric

the

hardware

generator

arrow

C:

arrow

keypad, then

keys

to

select

keypad,

control

keypad,

keys

keypad,

control

to

J106

to

then

value

then

select

then

value

on

HCA

HCA

the

terminate

(hardware

terminate

and

press

terminate

(hardware

terminate

and

press

Y

O

loop

and

the

the

4

Hz

the

the

4

Hz

oset

entry

by

control

entry

by

5

(ENTER).

entry

by

control

entry

by

5

(ENTER).

synthesizer

pressing

address)

pressing

pressing

address)

pressing

5

(ENTER).

4

Hz

from

the

5

(ENTER).

4

Hz

5

(ENTER).

4

Hz

from

the

5

(ENTER).

4

Hz

assembly

.

27. Set the oset synthesizer frequency to 20 MHz and set the external signal generator

frequency to 25 MHz at a power level of

28. Probe TP27 (under the Y

a voltmeter

. The voltage at TP27 should be

continue with the next step

O Loop

. If the voltage

shield) on the Y

0

10 dBm.

O loop and oset synthesizer assembly with

+10 volts

6

1 volt. If the voltage is correct,

is incorrect, replace the Y

O loop and oset

synthesizer assembly.

29. Set the external signal generator frequency to 15 MHz.

display

display

.

.

30. Probe TP27. The voltage at TP27 should be010 volts61 volt. If the voltage is correct,

continue with the next step. If the voltage is incorrect, replace the YO loop and oset

synthesizer assembly.

31. Check the continuity of W8 pin 1 between both ends of the cable with an ohmmeter.IfW8

has continuity, replace the YIG Driver assembly. If W8 is opened, replace W8.

1-48 Troubleshooting

Troubleshooting

32. Set

33. Open

the synthesizer

the connection

Driver assembly

a. Press

b. Press

c. Press

d. Press

Note

34.

Measure

6

0.51

If the

voltage is

the YIG

35.

Set

the

36.

Open

the

Driver

37.

Measure

6

1.0

V

using the

5

.

4

SPCL

5

on

4

4

4

60

57

98

5

on

5

on

the numeric

the

the

Before making

for two

the voltage

V.

correct, continue

Driver assembly

synthesizer

connection

assembly

the

.

voltage

.

output frequency

between the

YO

following

keypad,

numeric

numeric

keypad,

keypad,

the following

hours

.

at TP5

on the

YIG Driver

with

.

output

between

at

TP5

frequency

the

Y

on

the

YIG

to 10

GHz.

loop

and

oset

steps:

then

terminate

then

terminate

then

terminate

measurement, allow

assembly

the

next

step

to

20

GHz.

O

loop

and

oset

Driver

assembly.

synthesizer

the

entry

the

entry

the

entry

.

The

.

If

the

voltage

synthesizer

The voltage

assembly

by

pressing

by

pressing

by

pressing

the

synthesizer

voltage

assembly

should

is

incorrect,

should

and

4

Hz

4

Hz

4

Hz

be

and

be

5

5

5

to

the

YIG

(ENTER).

(ENTER).

(ENTER).

warm-up

31.5

V

replace

the

YIG

23.0

V

If

the

ends

of

replace

voltage

the

the

is

cable

YIG

correct,

with an

Driver

check

ohmmeter

assembly

the

continuity

.

and

of

replace

W27

it

if

pin

4

and W27

necessary

pin

5

between

.

If

the

voltage

both

is

incorrect,

Troubleshooting 1-49

Troubleshooting

SLPF

A

(A8A3)

The

following

error

Note

Troubleshooting

groups

pertain

to

the

SLPF

A.

Error Group Description

Prior

are

36 =

38

to

replacing

within

Y

=

Y

specication

Unleveled at

Unleveled

an

assembly

at

the

at

or

power

Minimum V

Maximum

module

,

verify

connection

ernier

Vernier

that

to

Errors

Errors

the

power

the

assembly or

supply

module.

voltages

Unleveled

1.

Preset the

2.

Set the

more

than one

specied).

3.

Set

the

4.

Probe

J4

ground

If

J4 pin

at

Minimum

synthesizer

synthesizer

frequency

output

lead

pin

2

2

to

is

at

power

on

A3TP4).

a

output

the

TTL

V

.

level

ALC

If

low

ernier

Error

36

=

36

=

36

=

36

=

36

=

36

=

36

=

36

=

36

=

36

=

frequency

point

failed,

to

0

23.9

assembly

J4

pin

level,

Errors

Group

4

10

40

100

400

1000

4000

10000

40000

100000

to

dBm.

(A10)

2

is

at

continue

Unleveled

Unleveled

Unleveled

Unleveled

Unleveled

Unleveled

Unleveled

Unleveled

Unleveled

Unleveled

the

frequency

set

the

with

a

TTL

with

Description

at

1.0

at

1.65

at

2.75

at

4.8

at

8.0

at

9.9

at

10.0

at

12.8

at

18.0

at

20.0

specied

output

high

an

oscilloscope

level,

the

next

frequency

step.

GHz

GHz

GHz

GHz

GHz

GHz

GHz

GHz

GHz

GHz

replace

in

the

to

the

(connect

the

SLPFA

error

message

lowest

the

oscilloscope

(A8A2/A8A3).

(if

frequency

5. Probe J2 pin 2 on the microprocessor assembly (A3) with the oscilloscope

.IfJ2pin2isata

TTL high level, replace the ABUS cable (W9). If J2 pin 2 is at a TTL low level, replace the

microprocessor assembly (A3).

1-50 Troubleshooting

Troubleshooting

Unleveled

1.

2.

Preset

Set

more

the

the

than

specied).

3.

Set

the

4.

Lock the

at Maximum

synthesizer

synthesizer

one

frequency

output

power

synthesizer

Vernier

.

output

level to

step

Errors

Error

38

38

38 =

38

38

38 =

38

38

38 =

38

Group

=4

=

10

40

=100

=

400

1000

=

4000

=

10000

40000

=

100000

frequency

point

failed, set

0

28

attenuator

to

dBm.

.

Description

Unleveled

Unleveled

Unleveled at

Unleveled

Unleveled

Unleveled at

Unleveled

Unleveled

Unleveled at

Unleveled

the

frequency

the output

at 1.0

GHz

at

1.65 GHz

2.75

GHz

at 4.8

GHz

at

8.0

GHz

9.9

GHz

at

10.0

GHz

at

12.8

GHz

18.0 GHz

at

20.0

GHz

specied

frequency to

in

the

the

error

lowest

message

frequency

(if

a.

Press

b.

Press

c.

Press

5.

Set

the

6.

Probe

J4

ground

If

J4

pin

7.

Probe

TTL

J2

high

microprocessor

4

SPCL

5

4

on the

2

4

MHz

output

pin

lead

to

2

is

pin

level,

5

.

5

.

power

2

on

A3TP4).

at

a

TTL

2

on

replace

assembly

numeric

the

the

keypad,

level

to

ALC

assembly

If

J4

low

level,

microprocessor

the

ABUS

(A3).

0

22

pin

2

continue

then

dBm.

(A10)

is

at

cable

terminate

with

a

TTL

with

assembly

(W9).

an

oscilloscope

high

the

next

(A3)

If

J2

the

entry

level,

step

with the

pin

2

is at

by

(connect

replace

.

oscilloscope.

aTTL

pressing

the

SLPF

low level,

5

(ENTER).

4

Hz

the

oscilloscope

A

(A8A2/A8A3).

If J2

pin 2

replace

is

at

the

a

Troubleshooting 1-51

Troubleshooting

Divider

The

following

Note

and

Modulation

error

Prior

are

groups

Assembly

pertain

to

the

(A4)

Divider

Troubleshooting

and

Modulation

Error Group Description

45 =

Y

46

=

Y

47

=

Y

48

=

Y

to replacing

within specication

Low Band

Low

Band

Low

Band High

Low

Band

an assembly

at the

Low V

ernier/Low

Low

V

ernier/High

Vernier/Low

High

V

ernier/High

or module

, verify

power connection

assembly

Freq

T

Freq

Freq

Freq

that

to the

.

ests

T

ests

T

ests

T

ests

the

power

assembly

supply

or

module

voltages

.

1-52 Troubleshooting

Troubleshooting

Error

45

=

4

45 =

10

45

=

40

45

=

100

45

=

400

45

=

1,000

45

=

4,000

45

= 10,000

45

=

40,000

45

=

100,000

45

=

400,000

45

=

1,000,000

45

=

4,000,000

45

=

10,000,000

46

=

2

46

=

8

46 =

20

46

=

80

46

=

200

46

=

800

46

=

2,000

46

=

8,000

46 =

20,000

46

=

80,000

46

=

200,000

46

=

800,000

46

=

2,000,000

46

= 8,000,000

47

=

4

47

=

10

47 =

40

47

=100

Group

Description

Unleveled

at

Unleveled at

Unleveled

Unleveled

Unleveled

Unleveled

Unleveled

Unleveled

Unleveled

Unleveled

Unleveled

Unleveled

Unleveled

Unleveled

Unleveled

Unleveled

at

at

at

at

at

at 90.5

at

at

at

at

at

at

at

at

Unleveled at

Unleveled

Unleveled

Unleveled

Unleveled

Unleveled

at

at

at

at

at

Unleveled at

Unleveled

Unleveled

Unleveled

Unleveled

Unleveled

Unleveled

Unleveled

at

at

at

at

at 999.9

at

at

Unleveled at

Unleveled

at 22.6

10

MHz

11.3 MHz

16

MHz

22.6

MHz

32 MHz

45.4

MHz

64

MHz

MHz

128

MHz

181

MHz

256 MHz

362

MHz

500

MHz

700

MHz

11.2

MHz

15.9

MHz

22.5 MHz

31.9

MHz

45.3

MHz

63.9

MHz

90.4

MHz

127.9

MHz

180.9

MHz

255.9

MHz

361.9

MHz

499.9

MHz

699.9

MHz

MHz

10

MHz

11.3

MHz

16 MHz

MHz

47 = 400 Unleveled at 32 MHz

47 = 1,000 Unleveled at 45.4 MHz

47 = 4,000 Unleveled at 64 MHz

47 = 10,000 Unleveled at 90.5 MHz

47 = 40,000 Unleveled at 128 MHz

47 = 100,000 Unleveled at 181 MHz

47 = 400,000 Unleveled at 256 MHz

47 = 1,000,000 Unleveled at 362 MHz

47 = 4,000,000 Unleveled at 500 MHz

47 = 10,000,000 Unleveled at 700 MHz

Troubleshooting 1-53

Troubleshooting

1. Install

\Divider and

Note

the Divider

Modulation Board

When

position

Error

48

48 =

48

48

48

48

48

48

48

48

48

48

48

48

Group

=

4

10

=

40

=

100

=

400

=

1,000

=

4,000

= 10,000

=

40,000

=

100,000

=

400,000

=

1,000,000

=

4,000,000

=

10,000,000

and Modulation

installing

the

the

instrument

Unleveled

Unleveled at

Unleveled

Unleveled

Unleveled

Unleveled

Unleveled

Unleveled

Unleveled

Unleveled

Unleveled

Unleveled

Unleveled

Unleveled

assembly

in

Assembly (A4)"

Divider

and

with its

Modulation

left side

Description

at

11.2

15.9 MHz

at

22.5

at

31.9

at

45.3 MHz

at

63.9

at

90.4

at 127.9

at

180.9

at

255.9

at

361.9 MHz

at

499.9

at

699.9

at

999.9

the

service

in Chapter

assembly

toward

MHz

MHz

MHz

MHz

MHz

MHz

MHz

MHz

MHz

MHz

MHz

position.

5

of

this

the

work

Refer

manual.

in

the

to

service

surface

the

procedure

position,

.

2.

Using

an

Modulation

10



s/division).

seen

on

all

3.

Sequentially

the

instrument

replace

4.

Set

the

more

oscilloscope

on

one

pins

,

go

the

synthesizer

than

one

assembly

or

to

probe

microprocessor

,

sequentially

(connect

Preset

more

step

the

of

4

pins

while

probing

output

frequency

instrument

these

to

continue

6,

8,

10,

assembly

frequency

point

probe

the

oscilloscope

pins

,

and

each

failed,

pins

while

continue

.

14

of

pin.

If

.

If

activity

to

the

set

6,

8,

ground

probing

with

the

J2

on

the

activity is

is

frequency

the

output

10,

each

next

microprocessor

not seen

seen,

frequency to

specied).

5.

Set

the

synthesizer

depending on the value of the error group

power

level

to

the

power

.

level

indicated

Error Group Power Level

45 =

46 =

47 =

48 =

Y

Y

Y

Y

0

2dBm

+8 dBm

6. Connect a power meter to the synthesizer RF OUTPUT.

and

14

of

lead

to

TP1

pin.

If

step

.

on one

replace the

specied in

in

the

J2

on

and

TTL

level

If TTL

assembly

or more

data cable

the error

the lowest

following

the

Divider

set

the

timebase

activity

level activity

(A3).

of

these

(W9).

message (if

frequency

table

and

is

not

is seen

Preset

pins

to

,

7. Verify that the power level at the RF OUTPUT is either +8 dBm61.0 dB or02 dBm61.0

dB, depending on the value of the error group. If the power level is incorrect, continue

1-54 Troubleshooting

with

the next

and

Modulation assembly

8.

Disconnect W21

9.

Probe J3

make

the measurement).

10.

V

ary

the

varies

If

the

assembly

continue

11.

Check

has

continuity

12.

Connect

13.

Disconnect

meter

14.

V

ary

the

between

If

the

W33

with

Low

Band

vary

between

step.

from J2

pin 11

voltage

between

voltage

.

with

the

the

to

J10.

voltage

0

power

on

<

at

J3

If

the

voltage

the

continuity

,

continue

voltage

W33

from

10

dBm

level

an

ohmmeter

Coupler/Detector

0

10

If the

the

source

0

25

pin

next

of

source

source

and

at

J10

dBm

power level

or anywhere

on

the

ALC

assembly

from

mV

and

11

varies

at

J3

step

.

W21

with

to

J10

on

from

+20

dBm.

varies

.

If

W33

(A8A5).

and

+20

ALC

0

10

>

0

between

pin

with

the

J6

the

0

10

between

is

is

assembly

with

V

to

0.5

V

.

11

does

an

ohmmeter

next

step

on

the

Divider

V

to

opened,

If

dBm,

correct,

else

in

the

a

voltmeter

+10

V

<

0

25

not

vary

.

Divider

and

Modulation

+10

V

0

10

dBm

replace W33.

the

power

continue

there

(A10)

and

mV

.

If

and

and

with

is

output

and

(do

verify

and

between

W21

is

Modulation

verify

and

+20

level

at

the

no

trouble

leveling

connect

not

disconnect

that

the voltage

>

0

0.5

<

0

25

opened,

assembly

that

the

dBm,

If W33

J10 is

next step

found

loop

.

a

voltage

V

, replace

mV

and

replace W21.

assembly

and

connect a

power

check

has

continuity

out of

range

.

Troubleshooting

in

the

Divider

source

W28

at J3

the ALC

>

.

level

the continuity

0

0.5 V

at

,

or

from

pin 11

to

J3

,

If W21

power

J10

varies

replace

does

W21.

not

to

of

the

15.

Disconnect

meter

16.

V

erify

If

the

power

opened,

level

17.

Disconnect W25

meter

18.

Verify

If

the

power

opened, replace W25.

If W25 has continuity

range, continue with the next step

19. Disconnect W23 from J3 on the Divider and Modulation assembly and connect a power

meter to W23.

20. V

erify that the power level at W23 is between 0 dBm and +4 dBm.

If the power level at W23 is correct, replace the Divider and Modulation assembly. If the

power level at W23 is missing, check the continuity of W23 with an ohmmeter.IfW23is

opened, replace W23. If W23 has continuity, replace the output module (A8A1). If the

power level at W23 is out of range, replace the output module.

to

W26.

that

power

level

replace

at W26

to W25.

that the

power

level

W26

from

the

power level

level

at

W26

W26.

is

out

from

power

level

at

W25

J5

on

the

Divider

at

W26

at

W26 is

is

of

range

J5

at

W25

is

, continue with the next step

correct, replace

missing, check

If

W26

has continuity

,

continue

on

the

Divider

level

at

W25

is

correct,

missing,

check

and

is

between

the continuity

with

and

is

0

dBm

replace

the

continuity

.

the

Modulation

0

2

dBm

the

Divider

of

, continue

next

step

Modulation

6

2

dB

.

the

Divider

of

.If

assembly

and

and

W26

with

.

assembly

and

W25

the power level at W25 is out of

and connect

+2

dBm.

Modulation

with

an

the

next

(A4)

Modulation assembly

with

an

assembly

ohmmeter

step

.

If

and

connect

ohmmeter

the

a

.

If

.

If

power

.

If

W26

power

a

.If

W25

the

is

power

the

is

Troubleshooting 1-55

Troubleshooting

Symptom

The

following

the

instrument

Begin

with

procedures

the

troubleshooting.

1.

Refer

to

the

failing.

The

Front

Remote

The

10

MHz

10

MHz

Find

synthesizer

P

anel

Display

interface

power-up

output

input

Troubleshooting

are

used

when

but

a

failure

following

following

the

symptom

is

observed.

procedure

table

of

in

the

,

which

symptoms

rst

Symptom Procedure

appears

dead.

not functioning.

does

not

function.

self

test

fails

.

not

functioning.

not

functioning.

the internal

will

that might

column

F

ailure

self test

refer you

be observed

that matches

Symptoms

does not

to another

the symptom

Checking

Checking

Display

Checking

Interface

Checking

Checking

Checking

detect a

procedure to

when the

synthesizer

you are

the

P

the

Front

the

Hewlett-P

Bus

(HP-IB)

the

Microprocessor

the

10

the

10

problem with

continue

observing.

ower

Supply

P

anel

ackard

MHz

Output

MHz

Input

is

0.5 V/GHz

Wrong

External

2.

Go

to

or

no

ALC

the

output

output

(diode

procedure

not

functioning.

power

or

power

in

.

the

meter)

second

not

functioning.

column of

the table

to

continue

Checking the

Checking

Checking

the

External

troubleshooting.

0.5

V/GHz

Output

P

ALC

Output

ath

1-56 Troubleshooting

Troubleshooting

Checking

The

following

the

assemblies

The

P

ower

P

ower

Supply

1.

+5.2D

2.

+5.5A

3.

0

4.

+45.0

5.

0

6.

+8.1

7.

+15.6

On

the

LEDs

o,

1.

If

loaded

2.

Disconnect the

cable

3.

If

15.8

5.5

.

the

an

the

V

V

V

V

V

V

V

end

When

supply

LED

down by

after the

LED

Supply

Supply

the

information

is

Supply

V

of

the

an

has

is

o

comes

is

operating

has

failed.

P

ower

loading

down

consists

oltages

P

ower Supply

LED

is

on, that

failed

or

indicating

one of

dc cable

assembly has

back

properly

Replace

Supply

will

help

the

of

seven

facing the

supply is

the

supply

that

the

assemblies

(W8) at

been

on

there

.

If

the

to

determine

power

supplies:

a

supply

each

checked.

is

a

the

P

ower

if

supply

.

front of

operating within

is being

loaded down

has

failed,

.

assembly

problem

LED

Supply

stays

one

with

o

.

the

P

ower

Supply

the synthesizer

its specied

by

make

sure

assembly

one

after

at

of

the

checking

has failed,

,

there

tolerance

one

of

the

that

the

a

time

.

assemblies

each

or if

are

seven

.

assemblies:

supply

Reconnect

,

and

the P

assembly

is

If

,

not

the

one of

green

the

being

the

ower

P

LED

dc

ower

is

Checking

The

following

board,

1.

Turn

can

step

2.

V

erify

board

the

display

the

be

seen

4.

Otherwise

that

assembly

the

Front

procedure

board,

synthesizer

through

,

the

voltages

.

P

anel

will

or

the

on.

V

an

opening

continue

shown

Display

help

cabling.

erify

with

to

that

in

in

T

isolate

the

the

the

able

a

front

the

RST

back

next

step

following

1-5.

A2J1 V

of

LED

the

.

table

panel

on

the

board. If

are

oltages

display

A2 Display

the LED

present

problem

at A2J1

to

the

Board is

is o,

on the

microprocessor

o.

The

LED

continue with

display

Pin Voltage

5 +45 V

6 +5.2 V

3. If the voltages are not present, continue with \Checking the P

supply is operating properly

, replace the cable connected to A2J1. If the voltages are

6

0.2 V

ower Supply

."

If the power

present, replace the A2 display board. The problem should be xed.

4. Turn the synthesizer o. Set theDswitch on the back of the A2 display board to1.

5. Turn the synthesizer back on. The front panel diagnostics will run. Information is displayed

indicating if the ROM, RAM, and display RAM are operating properly. The displays will start

Troubleshooting 1-57

Troubleshooting

scanning

with

the next

6.

Turn the

7.

Turn the

when

any of

If

activity

next

step

8.

On

the

A3J4-Pin

(W18).

Checking

If

there

seems

the

A3

microprocessor

Disconnect

the

cable

.

Checking

1.

Turn

the

one digit

at a

step.

synthesizer o,

synthesizer on.

the numeric

is

seen,

replace

.

A3

microprocessor

26

when

If

no

activity

the

Hewlett-P

to

be

an

the

HP-IB

Otherwise

the

power

,

Microprocessor

to

time,

Otherwise

and

V

keys

any

of

the

is

seen,

HP-IB

board

cable

(W24)

replace

the

synthesizer

and the

,

replace

reset

erify

that

is

pressed.

the

A2

board,

verify

numeric

replace

ackard

problem,

assembly

and

the

A3

LEDs

will

the

A2

display

the

switch

activity

display

keys

the

back

can

board.

that

activity

is

pressed.

A3

microprocessor

Interface

there

are two

.

check

the

cable

microprocessor

o.

begin

counting.

board.

to

0

.

be

seen

at

If

no

activity

can

If

Bus

(HP-IB)

possible causes:

continuity

board

assembly

A2J2-Pin

is

be

seen

activity

board.

.

If

this

seen,

at

is

the HP-IB

If

the

.

happens

4

and

continue

A3J4-pin

seen,

replace

cable

,

continue

A2J2-Pin

with

20

and

cable

cable (W24)

is

bad,

replace

10

the

or

2.

Disconnect

3.

Turn

If

the

replace

4.

Turn

5.

Reconnect

assemblies

6.

Turn

If

the

replace

7.

Perform

the

the

power

power-up

the

microprocessor

the

power

W9

.

the

power

power-up

W9.

the following

data

to

self

to

to

to

self

cable

(W9)

the

synthesizer

test

passes

assembly

the

synthesizer

J2

on

the

microprocessor

the

synthesizer

test

passes

steps sequentially

from

on.

,

continue

.

o.

on.

,

continue

J2

on

the

with

assembly

with

for each

instrument.

a. Turn power to the synthesizer o.

b. Reconnect W9 to one of the remaining assemblies

c. Turn power to the synthesizer on.

When the power-up self test fails

, replace the last assembly that W9 was connected to

microprocessor

the

next

step

.

and

disconnect

the next

of

step.

the

remaining

.

assembly

If

the

If the

assemblies

(A3).

power-up

W9

from

power-up

self test

all

of

the

self

test

in

the

fails

fails

.

,

other

,

1-58 Troubleshooting

Troubleshooting

Checking

1.

Connect

synthesizer

2.

V

erify

MHz

frequency

3.

Disconnect

meter

4.

V

erify

MHz

the

5.

Disconnect W11

6.

Measure the

J3,

reading

level

Checking the

1.

Connect

timebase

the

a

frequency counter

that

6

1

Hz (Option

is

to

it.

that

OUT is

next step

such as

should

is

incorrect

an

source

through

the

the

the

HP

external

10

MHz

frequency counter

incorrect

frequency

power meter

functioning correctly

.

from J3

power at

part

be

4.5

or

10 MHz

to

Output

a

10

1E5). If

or missing,

J3 with

number

dBm

missing,

Input

timebase

output

to the

dB

attenuator.

the frequency

counter

reading is

on the

the power

83711-60022,

6

0.5

replace

source to

a

10 MHz

10 MHz

reading is

continue with

from the

.If

the power

LO synthesizer

dB

.

If

the

6

100

OUT connector

10 MHz

is correct,

10 MHz

4.3 dBm

meter

and

the

power

LO

synthesizer

the rear

Hz

step 5.

6

0.5

level

and

(you

adapters

level

panel

CW

signal

on the

6

50

Hz (standard

continue with

OUT connector

dB

.

If

the

power

is

incorrect

reference

can

is

10

assembly

use

a

short

as

appropriate).

correct,

and

reference

MHz

IN

at

0

to

+10

rear panel

instrument) or

the next

and

connect

level

or

missing,

(A6).

SMC

The

replace

assembly

connector

dBm.

of the

step

is

correct,

continue

coaxial

power

W11.

and

If

.

.

If

a

power

cable

the

set

10

the

the

with

at

meter

power

the

10

2.

V

erify

that

the

text

EX

REF

appears

If

EX

REF

appears

not appear

3.

Disconnect W12

4.

Connect the

If

EX

continue

5.

Reconnect

6.

Using

connecting

oscilloscope

activity

P1 pin 2,

7. Probe J2 pin

reconnecting the external timebase

cable (W9). If activity is seen, replace the microprocessor assembly

in

REF

appears

with

W12

an

oscilloscope

the

is

seen

replace the LO synthesizer and reference assembly

in

the

display

the

display

from

external timebase

the

next

to

external

ground

on

2 on the microprocessor assembly (A3) while disconnecting and then

in

J2.

P1

J2

the

,

probe

lead

pin

,

continue

on

the

display

step

.

P1

timebase

to

A3TP4

2,

continue

in

the

display

,

the

10

MHz

with

the

LO

synthesizer

source

to

J2.

,

replace

pin

to

W12.

2

on

the

the

rear

and

set

the

with

the

. If activity is not seen on J2 pin 2, replace the data

.

input

is

next

step

and

reference

If

EX

LO

synthesizer

panel

10

timebase to

next

step

functioning

.

REF

does

MHz

IN

10

.

If

correctly

assembly

not

appear

and

reference

connector



s/division). If

TTL

level

.

.

.

If

(A6).

in

assembly

(connect

activity

EX

REF

the

display,

the

TTL level

is

not

does

while

seen

on

Troubleshooting 1-59

Troubleshooting

Checking

1.

Connect

voltmeter

2.

Set

the

3.

V

erify

that the

(limits

limit

limit

If

pin

If

4.

Perform

If

are

upper

lower

the voltage

5and

the voltage

the 0.5

assembly

OUT

is

Checking

Note

the

0.5V/GHz

a

voltmeter to

ground

frequency

lead

of

voltage at

in

millivolts).

=(frequency

=(frequency

is within

the center

is not

the adjustment

V/GHz

.

If

OUT

it

can

be

functioning

the

Output

If

the

try

a

calibration

Calibration"

Calibration

with this

Output

pin 5

of J1

to

A3TP4).

the synthesizer

J1 is

(MHz)

4

2)+0.5

(MHz)

4

2)

the limits

conductor of

within the

procedure \0.5

cannot

be

adjusted

at

all

tested

P

ath

power

level

of

and

\1

Guide

.

procedure

on the

to the

within the

0

0.5

, disconnect

the 0.5

limits,

continue

V/GHz Output

adjusted

using

successfully

frequencies

is

close,

approximately 2

the

instrument. Refer

-

20

GHz

If

the

power

.

microprocessor assembly

frequency at

limits

determined

W8

from

V/GHz

OUT

with

the

,

run

the

which the

J1

and

connector

the

next

A

djustment"

procedure

self

test

by

check

step

,

replace

to

the

ensure

.

dB

or

less

Attenuator

level

is

to the

Calibration" (Option

not

close

procedure

,

o

(A3) (connect

failure is

following

the

continuity

and

replace

.

in

the

the

that

from

what

\1

by

2

dB

the

observed.

equations

between

it

if

necessary

Calibration

Guide

microprocessor

the

0.5

V/GHz

it

should

-

20

GHz

V

ernier

1E1)

in

the

or

more

,

continue

be

.

.

,

1.

Set

the synthesizer

2.

Set

the

synthesizer

3.

Check

If

the

the

UNL

status

VL

Troubleshooting"

the

UNL

VL

annunciator

4.

If

the

instrument

the

Option

1E1

continue with the procedure

To Troubleshoot the Option 1E1 Output P

1. Disconnect W37 from the input of the attenuator

2. Connect a power meter to W37 at the output module COUPLER OUT connector

3. V

erify that the power meter reading is

output

frequency

of

the

UNL

annunciator

procedure

has

Option

Output

P

power

is

is

o,

ath."

to

VL

LED

on,

there

at

the

continue

1E1

If

to

0.0

3

GHz.

annunciator

is

beginning

installed,

the

instrument

dBm.

a

problem

with

continue

.

of

this

the

does not

in

next

the

ALC

chapter

step

.

with

the

have Option

circuitry

to

continue

procedure \T

\To Troubleshoot the Non-Option 1E1 Output P

ath

.

0

0.3 dBm

6

0.9 dB

.

.

Go

to

the

troubleshooting.

o Troubleshoot

1E1 installed,

ath."

.

\Main

If the power level is correct, continue with the next step. If the power level is incorrect or

missing, replace W37.

4. Reconnect W37 to the input of the attenuator and disconnect W34 from the attenuator

output.

5. Connect a power meter to the output of the attenuator.

If

1-60 Troubleshooting

6. V

erify that

continue with

dBm

6

value (

the power

1.5 dB

0

13.7

step 13.

,etc

.), continue

dBm, for

meter reading

If the

power level

with

is 0

the

example), replace

dBm

next

the

6

is o

step

attenuator

0.6

by a

.

If

dB

.

factor

the

If

the

of

power

.

power

ten

(

level

0

level

10

is

o

Troubleshooting

is

correct,

dBm

6

1.5

dB

by any

other

,

0

20

7. Disconnect

8. Set

the synthesizer

9. Measure

ground lead

(1=TTL high;

If

the voltage

level

on any

10.

Set

the

11.

Measure

should

If

the

voltage

level

on

W19 from

the

voltage

to

A3TP4).

0=TTL

levels on

of the

synthesizer

the

voltage

be

as

shown

levels

any

of

the

J6 on

the microprocessor

output power

levels

The

on

selected

voltage

to

0

90

pins

levels

dBm.

of

J6

should

assembly

with

a

be

as

(A3).

voltmeter

shown

in

(connect

the

following

low).

Pin1Pin2Pin4Pin5Pin6Pin7Pin8Pin

1 0 1 1 1 0 0 0

all pins

pins

are

output

levels

in

the

are

incorrect,

power

on

to

selected

following

correct,

replace

0

dBm.

pins

table

continue

the

of

J6

(1=TTL

with

the

microprocessor

with

a

voltmeter

high;

0=TTL low).

next

step

.

assembly

.

The

Pin 1 Pin 2 Pin 4 Pin 5 Pin 6 Pin 7 Pin 8 Pin 9

0 1 0 0 0 1 1 1

on all

pins

are

pins

are

incorrect,

correct,

continue

replace

with

the

microprocessor

the

next

step

.

assembly

the

9

If

the

(A3).

voltage

If

the

(A3).

voltmeter

table

voltage

levels

voltage

12.

Check

attenuator

13.

Disconnect

14.

Connect

15.

V

replace

T

o

Troubleshoot

1.

Disconnect

erify

the

continuity

.

a

power

that

CP1.

W34

If

W19

W34

the

If

of

is

opened,

from

CP1.

meter

power

the

the

from

meter

power

Non-Option

CP1.

W19

to

with

replace

W34.

reading

level

an

is

is

incorrect

1E1

ohmmeter

W19.

0

dBm

or

Output

.

If

W19

6

1.0

dB

missing,

P

ath

has

.If

the power

replace

continuity

level is

W34.

,

replace

correct,

2. Connect a power meter to W34 at the output module COUPLER OUT connector

3. V

erify that the power meter reading is

If the power level is correct,

replace CP1. If the power level is incorrect or missing, replace

0

0.3 dBm60.9 dB

.

W34.

the

.

Troubleshooting 1-61

Troubleshooting

Checking

1.

Disconnect

2.

Check

the

assembly

External

W31

from J1

continuity

.

If

W31

ALC

on the

of

W31 with

is

opened, replace

ALC assembly

an ohmmeter

W31.

(A10).

.If

W31 has

continuity,

replace the

ALC

1-62 Troubleshooting

2

Block

This chapter

HP 83731B/32B

Diagrams

contains the

block

synthesizers.

diagram

for

use

with

the

HP

83731A/32A

and

the

Block Diagrams 2-1

3

Major

Assembly and

Introduction

This

when

This

Major

Major

Cable

Cable

chapter

performing

chapter

contains

contains

Assemblies{T

Assemblies{Bottom

Assemblies{Top

Assemblies{Bottom

the major

the

troubleshooting procedures

the following

op

View

assembly and

drawings:

View

View

View

Cable Locations

cable location

described in

drawings

this service

that

should

guide.

be

used

Major Assembly and Cable Locations 3-1

Major

Assembly

and

Cable

Locations

Figure

3-1.

Major

Assemblies

{

T

op

View

3-2 Major Assembly and Cable Locations

Major

Assembly

and

Cable

Locations

Figure 3-2. Major Assemblies { Bottom View

Major Assembly and Cable Locations 3-3

Major

Assembly

and

Cable

Locations

Figure 3-3. Cable Assemblies { Top View

3-4 Major Assembly and Cable Locations

Major

Assembly

and

Cable

Locations

Figure

3-4. Cable

Assemblies

{

Bottom

View

Major Assembly and Cable Locations 3-5

P

arts List

Introduction

This

chapter

assemblies

HP

83711B/12B synthesized

The

parts lists

are

available separately

HP

83731B/32B Synthesized

contains

,

mechanical

, schematic

Abbreviations

T

ables

4-2

diagrams

letters

.

letters

.

through

,

and

However

Thus

,

4-4

throughout

,

the

abbreviations

information

parts

,

and additional

CW generators

diagrams,

in the

HP 83711A/12A,

Signal Generators

list

reference

the

manual.

replaceable

in

the

for

identifying and

documentation for

.

and component

designations

Standard

parts

lists

are

replaceable

ordering major

location

diagrams

HP 83711B/12B

the HP

,

HP

83731A/32A

assemblies,

cable

83711A/12A and

for

board

assemblies

and

Component-Level-Information Manual

and

abbreviations

abbreviations

computer

parts

lists

printouts

are

in

,

used

may

be

in

using

uppercase

in

the

upper

only

letters

parts

or

uppercase

only

.

list,

block

lowercase

.

4

Replaceable

T

ables 4-5

and

1.

Assembly

or

2.

Hewlett-P

3.

Part

to

through

mechanical or

the

reference

number

assure

P

4-18

electrical part

reference

number

ackard

check

that

the

arts

T

list

designation.

part

number

digit

part

number

able

the

of

the

(CD).

F

ormat

following

that

is

This

assembly

.

This

digit

you

order

information

not

part

of

column

is

or

used

has

lists

part

been

for

a

major

the

shown

by

HP

written

each

major

assembly:

reference

in

the

to

perform a

correctly

assembly

designator

applicable

checksum test,

.

,

cable

assembly

for

the

illustration.

assembly

helping

4. Quantity used. The total quantity of parts used in the illustration or in a specic area of the

illustration is listed in this column.

5.

Description of the assembly

Parenthetical

information may be included to indicate optional parts or parts deleted when

an option is added. Reference designators may also appear in parentheses

another illustration will appear in this column where a part is shown

. A brief description of the assembly or part is given.

. References to

in more than one

illustration.

,

Parts List 4-1

P

arts

List

6.

Manufacturer's code

of

each part,

Cataloging

handbook

Handbook H4/H8:

is available

Commander

Defense

F

ederal Center

74

Battle

7.

Manufacturer's part

Logistics Services

North W

Creek MI

number.

with the

ashington

49017-3084

number.

This column

exception of

Commercial and

from:

Center

lists a

ve-digit code

common hardware

Government Entity

. The

for the

codes are

(CAGE)

manufacturer

listed in

F

ederal

Publications.

This

Illustrated

Figures 4-7

an

exploded

identied

in

P

arts

through

illustration

each

gure

Breakdowns

4-16

are

Illustrated

of

a

section

.

Ordering Information

T

o

order

a

part

listed

in

any

replaceable

the

check

oce

Inclusion

Note

digit,

and

the

quantity

.

of

the

check

Within

P

P

your

ackard

arts

Center

nearest

digit

the

P

(CD)

USA,

arts

is

HP

System."

required.

will

it

is

Center

open

oce

P

arts

of

the

parts

ensure

most

by

calling

Monday

for

Breakdowns

instrument

table,

include

A

ddress

the

accurate

expedient

the

toll-free

through

information

along

order to

and

to

order

Friday

and

of

the

with

the

timely

directly

number:

,

6

forms

synthesizer

a

listing

Hewlett-P

the

nearest

processing

from

1-800-227-8164.

AM

to 5PM

for

the

.

Each

of

the

ackard

Hewlett-P

of your

the

(Pacic

\Direct

IPB

parts

that

part

number

ackard

order

Hewlett-

The

Time). Ask

Mail Order

contains

are

,

.

HP

4-2 Parts List

P

arts

List

Optional

Several

generators

throughout

P

The

used

prexes

P

options

.

this

Option

a

Option

Option

Option

1E1.

programmable110

1E5.

1E8.

1E9.

arts List

replaceable

in

all

instrument

.

arts

Identication

Congurations

are

The

available

option

for

numbers

manual:

A

dds

a

programmable

dB

microwave

A

dds

internal

Substitutes

Substitutes

1

a

high

Hz

3.5

Backdating

parts

lists

contain

congurations

the

HP 83711A/12A

listed

below

90

dB

attenuator

stability

frequency

mm

RF

output

the

parts

,

this

are

used in

microwave

.

(HP 83711B/12B

timebase

resolution

connector for

for

all

is

indicated

and HP

the replaceable

attenuator

.

for

the standard

instrument

with

a

83711B/12B synthesized

parts lists

.(HP

83711A/12A Only)

Only)

frequency resolution.

the standard

congurations

serial

number

Type-N connector

.

If

a

part

prex

or

and

a

CW

is

not

range

Adds

.

of

T

o

identify

Hewlett-P

number

,

a part

ackard

and

to

describe

not

shown,

service

center

the

part

contact

.

Be

by

the

parts

prepared

type

,

function,

identication

to

identify

and

section

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instrument

location

of

within

your

by

model

the

synthesizer

nearest

and

serial

.

Parts List 4-3

P

arts

List

Other

The

following

and

service:

Quick

User's

Programming

Calibration

Service

Component

Start

Guide

Calibration

Calibration

Documentation

manuals

Guide

:

Guide

Kit

Software

Guide

Guide

Level

or

:

:

:

:

:

:

::

::

:

:

:

:

:

:

:

::

:

(Option

Information

kits

:

:

::

::

::

:

:

:

::

:

:

::

OBW)

::

are

::

::

:

:

:

:

:

:

::

::

:

:

:

:

:

:

::

::

available for

::

::

::

:

:

:

:

:

:

:

:

:

::

::

:

:

:

:

:

:

:

:

:

:

:

:

:

::

::

::

:

:

:

:

:

:

:

::

::

::

::

(Option

:

:

:

:

:

:

:

:

:

:

:

:

:

:

:

:

:

:

:

:

:

:

HP 83711A/12A

:

:

:

:

:

:

:

:

:

:

::

::

::

:

:

:

:

:

:

:

:

:

:

:

:

:

:

:

::

::

:

:

:

:

:

:

:

:

:

:

:

:

:

:

:

:

::

:

:

:

:

:

:

:

:

:

OBV)

:

::

::

::

:

and HP

::

::

::

::

::

:

:

:

:

:

:

:

:

:

:

:

:

:

:

:

:

:

:

:

:

:

:

:

:

::

::

::

:

:

:

:

:

:

:

:

:

::

:

:

:

:

:

:

:

:

:

:

:

:

:

:

:

:

:

:

:

:

::

::

::

:

:

:

:

:

::

::

::

:

:

:

:

:

:

:

:

:

:

:

:

:

:

:

:

:

::

::

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::

:

:

:

:

::

::

:

:

:

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:

:

:

:

:

:

:

:

:

83711B/12B operation

:

:

:

:

:

:

:

::

::

::

::

:

::

::

::

::

:

:

:

:

:

:

:

:

:

:

:

:

:

:

:

:

::

::

::

:

:

:

:

:

::

::

::

:

:

:

:

:

:

:

:

:

:

:

:

:

:

:

:

:

:

::

:

:

:

:

:

:

::

::

::

::

:

:

:

:

:

:

:

:

:

:

:

:

:

:

::

:

:

:

:

::

::

::

::

:

:

:

::

. 83711-90133

:

:

.

83711-90131

:

.

83711-90132

:

:

:

:

:

.

5063-1635

::

::

.

5010-7723

:

:

.

83731-90125

::

. 83711-90134

:

:

.

83731-90126

4-4 Parts List

P

arts

List

Exchange

T

able

4-1

lists

F

actory

Defective

must

repaired

be

ordered

assemblies

Assemblies

assemblies

and

by

Reference

tested

must

the

T

able

within

be

new

4-1.

the synthesizer

exchange

returned

assembly

Description P

Designator

A3 Microprocessor

board

A4 Divider

Modulation

assembly

83712A/12B

A6 LO

Synthesizer/

Reference

assembly

A7 Y

O

Loop/Oset

board

83711A/12A

assemblies

P

art

Numbers

assembly

and

(HP

board

assembly

for

part

board

ONL

Only)

that can

credit.

number.

for

Y)

(HP

be replaced

are

available only

Assemblies

Exchange

Exchange

required for

art Number

Assy New

on an

on a

trade-in basis

Assemblies

1

exchange basis

spare parts

83711-69105 83711-60105

83732-69002 83732-60002

83711-69002 83711-60002

83711-69038 83711-60038

.

.

stock

Assy

A7 Y

O

Loop/Oset

board

assembly

83711B/12B

A8A1 Output

A8A3 Switched

Filter

assembly

(Includes

A9 YIG

Driver board

assembly

83711A/12A

A9 YIG

Driver

Only)

Module

Low

A8A2)

(HP

Only)

board

P

(HP

ass

83711-69117 83711-60117

83711-69006 83711-67006

83711-69003 83711-67003

83711-69104 83711-60104

83711-69118 83711-60118

assembly (HP

83711B/12B Only)

A10 ALC board

83711-69107 83711-60107

assembly (HP

83711A/12A Only)

A10 ALC board

83711-69343 83711-60343

assembly (HP

83711B/12B Only)

1

When ordering extra assemblies for spare parts stock, use new assembly part number

only. Exchange orders require return of the defective part.

Parts List 4-5

P

arts

List

A

.

.

..

..

..

..

..

..

..

.

.

A

T.

..

..

. attenuator;

B

.

.

..

..

..

BT

C

.

CP

CR

DC

DL

DS

A.

ac

A

CCESS

ADJ

A/D

AF .

AFC .

A

GC

AL .

ALC

AM

AMPL

APC

ASSY

A

UX

avg

A

WG

B

AL

BCD

BD

BE

BFO

BH

BKDN

BP

BPF

BRS

BWO

CAL

ccw

CER

CHAN

cm .... ........ ... centimeter

CMO .....

COAX .. ........ ...... coaxial

COEF . . . . . . . . . . . . . coecient

COM .. ....... ...... common

COMP ...... ..... composition

COMPL

CONN . . . . . . . . . . . . . connector

CP ..........

CRT . . . . . . . . cathode-ray tube

CTL complementary transistor

CW . . . . . . . . . continuous wave

cw ................ clockwise

..

..

..

..

..

.

.

CU

..

..

..

..

..

..

.

.

..

..

..

..

..

..

diode; diode

.

.

..

..

..

directional

.

.

.

.

..

..

..

.

.

..

annunciator; signaling

device

(audible or

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

alternating

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

..

..

automatic

.

.

.

automatic

.

.

.

.

.

.

.

.

.

.

automatic

.

.

.

.

.

amplitude

.

.

.

.

.

.

.

.

automatic

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

American

.

.

.

.

.

.

.

.

.

.

.

.

binary

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

beat

frequency

.

.

.

.

.

.

.

.

..

.

.

.

.

..

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

..

.

.

..

..

..

backward-wave

.

.

..

..

..

..

..

..

..

..

..

..

..

.

.

.

.

.

.

cabinet mount only

. . . . . . . . . . . . . complete

assembly

isolator;

termination

..

..

.

.

fan;

.

.

.

.

.

.

..

.

.

.

capacitor

.

.

.

.

.

.

coupler

thyristor;

varactor

.

.

.

.

delay

lamp;

.

.

.

.

.

. ampere

.

.

.

.

accessory

.

.

.

adjustment

frequency

frequency

gain

.

.

.

.

aluminum

level

modulation

.

.

.

.

.

amplier

phase

.

.

.

.

.

assembly

.

.

.

.

.

auxiliary

.

..

.

.

.

average

wire

.

.

..

.

.

balance

coded

decimal

.

.

..

..

.

oscillator

..

binder head

..

breakdown

..

..

.

bandpass

.

.

.

.

.

.

.

oscillator

.

.

.

.

.

calibrate

..

.

.

.

ceramic

.

.

.

.

.

.

channel

motor

battery

coupler

line

visual);

LED

current

control

control

control

control

gauge

.

board

copper

lter

.

brass

logic

..

..

.

.

.

.

.

.

.

.

.

.

.

.

.

.

analog-to-digital

.

audio

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

beryllium

..

..

..

.

..

..

. bandpass

.

.

.

..

.

counterclockwise

..

..

.

.

.

. cadmium plate

T

able 4-2.

E

miscellaneous

F

..

..

..

..

..

..

FL

.

.

H

.

.

..

HY

..

J

.

.

..

K

..

..

L

.

.

.

.

M

.

.

..

MP

.

miscellaneous

cm .

.

D/A

.

dB

.

.

dBm

.

dc

.

.

.

deg .

.



..

..



C

degree



F.

.



K

.

.

DEPC

DET

.

diam

DIA

.

DIFF

AMPL

div

.

.

DPDT

DR

.

.

DSB

.

DTL

.

DVM

ECL

.

EMF

EDP

electronic

ELECT

ENCAP

EXT

..

F

..

..

FET

.

F/F . . . . . . . . . . . . . . . . . . ip-op

FH . . . . .

FIL H . . . . . . . . . . . llister head

FM . . . . frequency modulation

FP . . . . . . . . . . . . . . . front panel

FREQ . . . . . . . . . . . . . frequency

FXD

....................xed

g ..... ........ ....

GE ........ ..

GHz . . . . . . . . . . . . . . . . gigahertz

GL . . . . . . . . . . . . . . . . . . . . . glass

GRD . . . . . . . . . . . . . . ground(ed)

H .....................henry

h .......................hour

..

.

.

..

..

..

..

..

..

..

..

..

..

..

..

..

..

..

. electrical

(stationary

..

..

.

.

.

.

..

..

..

.

.

.

..

..

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

decibel

referred

.

.

.

.

.

.

.

.

.

.

.

.

.

degree

interval or

.

.

.

.

degree

Celsius

.

.

.

.

.

.

degree

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

deposited

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

diameter

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

..

.

.

.

.

.

..

. double

.

.

.

.

diode

.

.

.

.

..

..

digital voltmeter

.

.

.

emitter

.

.

.

.

.

electromotive

.

.

.

.

.

.

..

.

.

..

..

..

..

..

..

.

.

..

..

..

..

..

.

.

.

.

eld-eect

. . . . . . . . . . . . at head

. . . . . germanium

Reference Designations

electrical

.

.

..

..

.

.

.

portion);

.

.

.

.

.

coil;

.

.

.

T

able

.

.

.

digital-to-analog

.

.

.

.

direct

(temperature

(plane

.

degree

.

.

.

.

.

.

(used

.

.

.

.

.

.

.

.

. double-pole

double-throw

..

transistor

coupled

data

..

. encapsulated

.

.

.

.

.

part

.

.

.

.

.

.

.

fuse

..

.

.

.

.

.

lter

.

.

hardware

.

.

circulator

connector

jack

.

.

.

.

.

.

.

relay

inductor

.

.

.

.

.

.

meter

mechanical

part

4-3.

.

centimetre

.

.

..

. decibel

to

1

mW

current

dierence)

angle)

(centigrade)

F

ahrenheit

Kelvin

carbon

.

.

.

detector

.

.

.

diameter

in

P

arts

List)

.

dierential

amplier

..

.

.

division

.

.

.

.

.

.

drive

sideband

logic

logic

force

processing

. electrolytic

.

.

.

external

.

.

.

.

.

.

farad

transistor

. . . . . . gram

P

electrical

Q

R

..

RT

S

.

T

..

TB

TC

TP

U

Abbreviations

HET .

HEX

HD

HDW

HF

HG .

HI .

HP .

HPF

HR .

HV

Hz

IC

ID

IF

IMPG

in

INCD

INCL

,

INP

INS

INT

kg

kHz

k

kV

lb

LC

LED

LF

LG

LH

LIM

LIN linear taper (used in P

lin . . . . . . . . . . . . . . . . . . . . linear

LK W

LO . . . . . . . low; local oscillator

LOG logarithmic taper (used in

log . . . . . . . . . . . . . logarithm(ic)

LPF . ........ .

LV . . . . . . . . . . . . . . low voltage

m . . . . . . . . . . . metre (distance)

mA ...............millampere

MAX .............. maximum

M ... ....... ....... megohm

connector

.

.

.

.

. transistor;

..

..

..

.

.

..

..

.

..

..

..

..

..

..

.

.

.

.

..

.

.

..

..

.

.

.

.

..

.

.

..

..

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

..

..

.

..

.

.

.

.

.

.

.

.

hour

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

intermediate

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

..

.

.

.

.

.

.

.

.

.

.

.

.

.

. inductance-capacitance

.

.

.

.

.

.

..

..

..

..

..

..

..

..

.

.

.

.

ASH . . . . . . . . lock washer

portion);

SCR; triode

..

..

.

.

.

.

.

..

..

.

..

..

..

..

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

..

.

.

..

.

.

..

.

.

..

..

..

.

.

.

..

..

..

. thermistor

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

transformer

..

.

terminal

.

.

.

.

thermocouple

..

.

.

.

.

.

.

.

integrated

microcircuit

.

.

.

.

.

.

.

.

heterodyne

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

high

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

Hewlett-P

.

.

.

.

high-pass

(used

in

.

.

.

.

.

.

.

high

.

.

.

.

.

.

.

..

.

.

integrated

.

.

.

.

inside

.

.

.

.

.

.

impregnated

.

.

.

.

.

..

.

.

.

.

.

.

.

.

incandescent

.

.

.

.

.

.

.

.

.

.

.

.

.

..

.

.

.

.

.

.

.

.

.

.

..

.

.

.

.

..

..

.

..

.

.

.

.

.

.

.

.

.

..

..

..

..

..

..

.

.

.

.

.

.

.

..

..

..

..

..

.

.

.

.

.

light-emitting diode

..

.

.

low

.

.

.

.

.

.

.

.

..

..

..

.

.

.

.

.

.

.

.

.

.

.

. low pass lter

(movable

plug

thyristor

.

.

resistor

.

.

.

switch

board

test

point

circuit;

hexagonal

..

..

.

head

hardware

frequency

.

mercury

.

.

.

.

.

high

ackard

lter

P

arts

List)

voltage

..

.

.

Hertz

circuit

diameter

frequency

.

.

.

.

.

inch

include(s)

.

.

.

.

input

insulation

.

.

internal

.

kilogram

kilohertz

.

.

.

kilohm

.

.

kilovolt

.

.

.

pound

frequency

.

.

.

.

.

long

.

left

hand

.

.

.

.

.

limit

arts

List)

P

arts List)

V

.

.

..

..

..

..

..

..

VR

..

..

..

W

.

.

.cable;

X

.

.

..

..

Y

crystal

Z

.

.

tuned

MEG .

meg

MET

FLM

MET

OX

MF

.

.

.

.

.

microfarad (used

MFR .

..

..

mg .

..

.

.

MHz

.

.

.

.

mH .

.

.

.

.

mho

.

.

.

.

MIN

.

.

.

.

min

.

.

.

.

'

.

.

.

.

.

.

.

MINA

T

.

mm

.

.

.

.

MOD

.

.

.

MOM

.

.

.

MOS

.

.

.

.

ms

.

.

.

.

.

MTG

.

.

.

MTR

.

meter

mV

.

.

.

.

.

mV

ac

.

.

.

mVdc

.

.

mVpk

.

.

mVp-p

.

millivolt,

mVrms

.

mW

.

.

..

MUX

..

..

MY

..

..

..



A

.

.

.

.

.



F . . . . . . . . . . . . . . . microfarad



H....

. . . . . . . . . . microhenry



umho . . . . . . . . . . . . micromho



s ..............



V . . . . . . . . . . . . . . . . microvolt



Vac . . . . . . . . . . . microvolt, ac



Vdc . . . . . . . . . . . microvolt, dc



Vpk . . . . . . . . microvolt, peak



Vp-p microvolt, peak-to-peak



Vrms . . . . . . . . . microvolt, rms



W . . . . . . . . . . . . . . . . microwatt

electron tube

..

.voltage

breakdown

transmission path;

..

..

..

..

..

.

unit

cavity;

.

.

.

.

.

.

.

medium

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

minute

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

..

..

.

.

.

.

.

.

.

.

.

..

..

..

..

.

.

.

.

(piezoelectric or

tuned circuit

6

) (used

(10

.

.

.

.

.

.

.

.

metal

.

.

.

.

metallic

frequency;

in

.

.

.

.

manufacturer

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

megahertz

.

.

.

.

.

.

.

.

millihenry

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

. minimum

.

.

.

.

minute

(plane

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

millimetre

.

.

.

.

.

.

.

. modulator

.

.

.

.

.

.

.

momentary

.

.

.

.

.

.

metal-oxide

semiconductor

.

.

.

.

.

.

. millisecond

.

.

.

.

..

..

(indicating

..

..

..

..

.

..

..

.

millivolt,

.

.

.

.

.

. millivolt,

.

..

. millivolt,

peak-to-peak

.

.

..

. millivolt,

..

.

.

.

.

.

.

..

.

.

.

.

.

.

..

..

..

.

.

.

.

.

.

.

.

microampere

. microsecond

regulator;

diode

.

.

socket

quartz)

in

oxide

P

arts

milligram

.

.

..

(time)

angle)

miniature

mounting

device)

millivolt

milliwatt

multiplex

.

.

.

mylar

wire

P

arts

List)

lm

List)

mho

dc

peak

rms

ac

4-6 Parts List

nA

.

.

.

.

.

.

.

.

.

.

..

NC .

.

.

.

N/C

.

.

.

NE

.

.

.

.

NEG

.

.

nF

.

.

.

.

NI

PL

.

N/O

.

.

.

NOM

.

.

NORM

.

NPN

negative-positive-negative

NPO

.

.

.

zero

.

.

.

NRFR

.

NSR

.

.

.

ns

.

.

.

.

.

nW

.

.

.

.

OBD

.

.

.

OD

.

.

.

.

OH

.

.

.

.

OP

AMPL

OPT

.

.

.

OSC

..

..

OX

.

.

.

.

oz

.

.

..

..



..

.

.

.

.

P

.

.

..

peak (used

P

AM .

.

.

PC

..

.

.

PCM

.

.

pulse-count

PDM

.

.

pF

.

.

.

.

PH

BRZ

PHL

.

.

.

PIN

.

.

.

..

.

.

.

.

.

.

.

.

no connection

.

.

.

.

.

.

normally

.

.

.

.

.

.

..

..

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

..

..

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

normally

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

negative-positive

.

.

.

.

(zero

.

not

recommended

eld

.

.

.

.

.

..

.not

.

.

.

..

..

..

.

.

..

..

..

..

.

.

order

by

.

.

.

.

. outside

.

.

.

.

.

.

.

.

.

operational

.

..

..

..

.

.

..

..

.

.

.

.

..

..

..

..

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

pulse-amplitude

.

.

.

.

.

.

.

.

printed

pulse-code

.

.

.

.

.

.

.

.

pulse-duration

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

phosphor

.

.

.

.

.

.

.

.

.

.

.

.

.

.

positive-intrinsic-

.

.

.

.

. nanosecond

.

.

.

.

.

.

in

.

.

nanoampere

closed

..

..

..

. neon

..

. negative

..

nanofarad

nickel

plate

open

..

..

nominal

.

.

.

..

normal

temperature

coecient)

replacement

.

.

.

.

.

.

.

.

.

for

separately

replaceable

.

nanowatt

description

diameter

.

oval

head

amplier

.

.

.

.

option

.

.

oscillator

.

.

.

.

.

oxide

.

.

.

.

.

ounce

.

.

.

.

.

.

ohm

P

arts

List)

modulation

circuit

modulation;

modulation

modulation

.

picofarad

bronze

.

..

Phillips

negative

T

able 4-3.

PIV

.

.

.

.

.

peak

pk .

.

.

PL

.

.

.

PLO

.

.

PM

.

.

.

PNP

positive-negative-positive

P/O

.

.

POL

Y

.

PORC

POS

positive;

POSN

.

POT

.

.

p-p

.

.

.

PP

peak-to-peak

PPM

pulse-position

PREAMPL

PRF

pulse-repetition

PRR

.

.

ps

.

.

.

.

PT

.

.

.

PTM

.

.

PWM

.

PWV

.

RC

..

..

RECT

.

REF

.

.

REG

..

REPL

.

RF

..

.

RFI

.

.

.

RH

.

.

.

RLC

.

..

RMO

.

rms

.

.

RND

.

.

RAM

.

ROM

.

inverse

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

..

.

.

.

.

.

.

.

.

..

.

.

.

.

.

.

.

.

..

.

.

phase

.

.

.

.

.

phase

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

position(s)

.

.

.

.

.

.

.

.

..

.

.

.

.

.

.

.

.

.

.

.

.

.

.

..

. peak-to-peak

.

.

.

.

.

.

.

.

pulse

repetition rate

.

.

.

.

.

..

..

.

.

.

.

..

..

.

pulse-time

pulse-width

.

peak

working voltage

resistance-capacitance

.

.

..

..

..

..

..

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

..

..

.

.

.

.

.

.

.

.

.

.

.

radio

..

.

.

.

.

radio

round

head;

resistance-inductance-

.

.

.

.

.

.

rack

.

.

.

.

.

root-mean-square

.

.

.

.

.

.

.

.

.

random-access

.

.

.

.

read-only

Abbreviations (continued)

R&P

.

.

.

.

.

.

.

.

voltage

..

..

..

. peak

. phase

lock

.

. polystyrene

.

potentiometer

(used

.

.

.

.

.

.

.

lock

oscillator

modulation

.

..

..

part of

.

..

porcelain

(used

in

P

arts

List)

..

..

position

in

P

arts

List)

modulation

preamplier

frequency

.

picosecond

.

.

.

.

.

.

point

modulation

modulation

.

.

.

.

rectier

.

.

reference

.

.

regulated

.

replaceable

frequency

frequency

interference

right

hand

capacitance

mount

only

.

.

.

.

.

.

round

memory

memory

RWV reverse

S

.

.

.

s

.

.

.

.

.

.

"

S-B

.

SCR

SE

.

SECT

SEMICON

SHF

SI

.

.

SIL

.

SL

.

SNR

SPDT

SPG

SR

.

SPST

SSB

SST

STL

SQ

.

SWR

SYNC

T

.

.

..

T

A.

TC

temperature

TD

..

TERM

TFT

TGL

THD

THRU

TI

.

.

TOL

TRIM

TSTR

TTL

.

.

.

.

.

.

scattering

.

.

.

.

.

.

.

..

.

.

.

second

.

.

.

.

.

.

.

.

.

(used

silicon

controlled

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

super-high

.

.

.

.

.

.

.

.

..

.

.

.

.

.

.

.

..

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

signal-to-noise

single-pole

.

.

.

.

.

.

.

.

..

.

.

.

.

.

..

..

single-pole

.

.

.

.

.

.

.

.

..

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

..

..

..

..

..

. standing-wave

.

.

.

.

..

..

..

timed

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

..

.

..

.

.

.

.

.

thin-lm

.

.

.

.

.

.

.

.

.

.

..

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

transistor-transistor

.

rack and

working

..

slow-blow (fuse)

.

.

.

.

.

.

semiconductor

..

..

..

,

..

..

single sideband

.

.

.

.

.

.

..

(slow-blow

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

panel

voltage

parameter

. second

(time)

(plane

angle)

in

P

arts

List)

rectier;

screw

.

.

..

. selenium

.

.

..

..

sections

frequency

..

..

.

.

silicon

..

..

.

.

.

.

silver

..

..

..

.

.

.

slide

ratio

double-throw

..

..

.

.

.

spring

..

.

.

.

split

,

stainless

.

.

.

.

..

.

.

compensating

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

ring

single-throw

steel

.

.

.

.

.

.

.

steel

.

.

.

.

.

square

ratio

synchronize

fuse)

.

.

.

tantalum

.

time

delay

.

.

.

terminal

transistor

.

.

.

.

.

.

toggle

.

.

.

.

.

thread

.

.

.

.

through

.

.

.

titanium

.

.

.

tolerance

.

.

.

.

trimmer

.

.

transistor

logic

TV

.

.

.

.

TVI .

.

.

TWT

.

.

U.

..

..

UF .

microfarad (used

UHF .

..

UNREG .

V

.

.

.

.

.

VA

.

.

.

.

V

ac

.

.

.

.

V

AR

.

.

.

VCO

.

.

.

Vdc

.

.

.

VDCW

volts

V(F)

.

.

.

VFO

.

.

.

VHF

.

.

.

Vpk

.

.

.

Vp-p

.

.

Vrms .

.

VSWR

.

VTO

.

.

voltage-tuned

VTVM

vacuum-tube

V(X)

.

.

.

W

.

.

.

.

.

W/

.

.

.

.

WIV

.

.

working

WW

.

.

.

W/O

.

.

.

YIG

.

.

.

Zo.

.

.

characteristic

P

arts

.

.

.

.

.

.

..

..

..

television

.

.

traveling

.

.

.

.

(used in

.

.

ultra-high

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

,

.

.

.

.

.

.

.

variable-frequency

.

.

very-high

.

.

.

.

.

.

.

.

volts

.

.

.

.

.

voltage

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

yttrium-iron-garnet

television

interference

wave

.

.

.

.

.

micro

Parts

frequency

.

.

.

.

.

unregulated

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

voltampere

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

..

voltage-controlled

.

.

.

.

.

.

.

..

dc

,

working

in

P

.

.

.

.

.

volts,

frequency

.

.

.

.

.

.

volts

,

peak-to-peak

.

.

.

.

.

.

.

volts

standing-wave

voltmeter

.

.

.

volts,

.

.

.

.

.

..

..

.

.

.

.

..

.

.

.

inverse

.

.

.

.

.

..

wirewound

.

.

..

.

.

.

.

.

impedance

List

tube

0

(10

List)

in P

arts

List)

..

..

. volt

volts,

variable

oscillator

volts,

dc

(used

arts

List)

ltered

oscillator

,

peak

,

rms

ratio

oscillator

switched

.

.

.

.

watt

.

.

.

.

with

voltage

.

without

6

)

ac

T

able

4-4.

Multipliers

Abbreviation Prex Multiple

T tera 10

G giga 10

M mega 10

k kilo 10

da deka 10

d deci 10

c centi 10

m milli 10



n nano 10

p pico 10

f femto 10

a atto 10

micro 10

12

9

6

3

0

1

0

2

0

3

0

6

0

9

0

12

0

15

0

18

Parts List 4-7

P

arts

List

T

able 4-5.

Major Assemblies

,T

op View

Reference

DesignationHPPart

No.

A1 83711-60001 2 1 FRONT

A2 83711-60224 5 1 DISPLA

CDQty Description Mfr

PANEL

Y

BO

ARD

ASSEMBLY

ASSEMBL

A3 83711-60105 2 1 MICROPROCESSOR BO

A3BT1 1420-0338 0 1 B

A4 83732-60002 3 1 DIVIDER

A6 83711-60002 8 1 LO/SYN

A7 83711-60038 0 1 Y

A7 83711-60117 0 1 Y

B1 3160-0521 3 1 F

A

TTERY 3V

AND

& REF

O

LOOP/OFFSET

O

LOOP/OFFSET

AN-TB

AX

1.2A-HR LITHIUM

MOD

BD ASSEMBL

BD ASSEMBL

BD

(INCLUDES A2)

Y

ARD ASSEMBL

BD

ASSEMBL

Y

Y(HP

ASSEMBL

Y

Y

POLY

CARBON

Y

(HP

83712A

83711A/12A ONL

(HP

83711B/12B

ONLY)

ONL

Y)

Y)

Manufacturer

Code

Part

Number

28480 83711-60001

28480 83711-60224

28480 83711-60105

28480 83732-60002

28480 83711-60002

28480 83711-60038

28480 83711-60117

4-8 Parts List

Figure 4-1. Major Assemblies

Location Diagram (T

op View)

T

able 4-6.

Major Assemblies

, Bottom

View

P

arts

List

Reference

DesignationHPPart

A8A1 83711-67006 1 1 OUTPUT

A8A2 P/O

A8A3 83711-67003 6 1 SLPF

A8A4 83711-60109 6 1 TWO

CDQty Description Mfr

No.

MODULE

A8A3

A

YIG

BD

ASSEMBL

A8A5 83732-60105 8 1 DETECTOR COUPLER

NOT

A8A

T1

83711-60014 2 1 A

INCLUDE

TTN

PROG

CO

90DB

VER,

(OPTION

0905-0111 2 O-RING .239-IN 28480 0905-0111

A8AT1 33322-60012 2 1 ATTN

A8G1 0955-0520 4 1 YIG

A8G2 0955-0526 0 1 YIG

A8T1 83711-60037 3 1 SAMPLER

A9 83711-60104 1 1 YIG

A9 83711-60118 1 1 YIG

A10 83711-60107 4 1 ALC

A10 83711-60343 4 1 ALC

A11 0950-2315 2 1 POWER

F1 2110-0703 1 FUSE

G1 83711-60341 1 CRYST

PROG 110DB

OSCILLA

TOR

OSCILLATOR

KIT

DRVR

BO

ARD

DRVR

BO

ARD

BO

ARD

ASSEMBL

BO

ARD

ASSEMBL

SUPPL

Y

MI

6.3

250

AL

OSCILLA

(OPTION 1E1,

2-10

10-20

ASSEMBL

ASSEMBL

N

(not shown)

TOR

Y

ASSEMBLY

SEE

(HP 83712A)

FIGURE

1E1, HP83711A/12A

HP83711B/12B ONL

GHz

GHz

Y

Y

(83711B/12B)

Y

Y

(83711B/12B)

4-15.)

(DOES

ONLY)

Code

28480 83711-67006

28480 83711-67003

28480 83711-60109

28480 83732-60105

28480 83711-60014

28480 33322-60012

Y)

24539 Y088-4258

24539 Y090-4060

28480 83711-60037

28480 83711-60104

28480 83711-60118

28480 83711-60107

28480 83711-60343

28480 0950-2315

Manufacturer

Part

Number

Parts List 4-9

P

arts

List

4-10 Parts List

Figure 4-2. Major Assemblies Location Diagram (Bottom View)

T

able 4-7.

Cable Assemblies

,T

op View

P

arts

List

Reference

DesignationHPPart

W1 83711-60016 4 1 CABLE

W2 83711-60018 6 1 CABLE

W3 83711-60019 7 1 CABLE

W4 83711-60020 0 1 CABLE

CDQty Description Mfr

No.

ASSEMBLY-300M

ASSEMBLY-10-26.5Mz

ASSEMBL

ASSEMBL

W5 83711-60025 5 1 CABLE ASSEMBL

W7 83711-60015 3 1 CABLE

W8 83711-60006 2 1 CABLE

W9 83732-60029 4 1 CABLE

W10 83711-60022 2 1 CABLE

W11 83711-60013 1 1 CABLE

W12 83711-60012 0 1 CABLE

W13 83711-60017 5 1 CABLE

ASSEMBL

ASSEMBL

D

A

T

A

uP

ASSEMBLY

ASSEMBL

ASSEMBL

ASSEMBL

W18 83711-60007 3 1 CABLE ASSEMBL

W19 83711-60011 9 1 CABLE

W21 83732-60019 2 1 CABLE

W23 83732-60014 7 1 CABLE

W24 83711-60010 8 1 CABLE

W25 83732-60013 6 1 CABLE

ASSEMBL

ASSEMBL

ASSEMBL

ASSEMBL

ASSEMBLY-AM

Y-FM

YIG

Y

FM

2-8

YFM

8-20

Y-30

MHz

Y-

MAIN

OTH

30 MHz

Y-10

MHz OUT

Y-10

MHz

Y-10Mz

Y-uP BD

Y

A

TTEN

Y

CNTL

Y

SMA-SMC

Y-HPIB

2

I/O

DC

I/O

DSPL

SIG

I/O

IN

Manufacturer

Code

Part

Number

28480 83711-60016

28480 83711-60018

28480 83711-60019

28480 83711-60020

28480 83711-60025

28480 83711-60015

28480 83711-60006

28480 83732-60029

28480 83711-60022

28480 83711-60013

28480 83711-60012

28480 83711-60017

28480 83711-60007

28480 83711-60011

28480 83732-60019

28480 83732-60014

28480 83711-60010

28480 83732-60013

Parts List 4-11

P

arts

List

4-12 Parts List

Figure 4-3. Cable Assemblies Location Diagram (Top View)

T

able 4-8.

Cable Assemblies

, Bottom

View

P

arts

List

Reference

DesignationHPPart

W1 SEE

W2 SEE

W4 SEE

W5 SEE

W8 SEE T

W9 SEE

W11 SEE

W12 SEE

W13 SEE

W19 SEE

W21 SEE

W27 70340-60024 4 1 CABLE

CDQty Description Mfr

No.

TABLE

TABLE

T

ABLE

T

ABLE

ABLE 4-7

T

ABLE

T

ABLE

T

ABLE

TABLE

T

ABLE

T

ABLE

A

W28 83711-60031 3 1 CABLE A

W29 10811-60151 6 1 CABLE

W30 83711-60026 6 1 CABLE

W31 83711-60009 5 1 CABLE

W32 83711-20007 9 1 CABLE

W33 83732-20011 0 1 S/R

ASSEMBL

ASSEMBL

A

ASSEMBL

CABLE ASSEMBL

W34 83711-20008 0 1 CABLE-S/R

83711-20042 2 1 CABLE-S/R

W35 83711-20006 8 1 CABLE-S/R

W36 70340-20016 4 1 CABLE

S/R

W37 83711-20009 1 1 CABLE-S/R

W38 83711-20039 7 1 CABLE

S/R

W39 83711-20003 5 1 CABLE-S/R

W40 83711-20004 6 1 CABLE-S/R

W45 83711-60116 1 CABLE

(OPT

4-7

4-7

4-7

4-7

4-7

4-7

4-7

4-7

4-7

4-7

Y-OS

DR-YIG

Y-ALC-OM

Y-DC

Y

Y-ALC

Y

A

TTN

NO-A

TTN

1-20

CP/MOD

OUTPUT

10-20

2-10

2-20

1E5

ON/OFF

S/R

Y

(OPTION

(83712A

and

POWER

PW

1E1)

only)

SUPPL

Y

0950-2315

ONL

Code

28480 70340-60024

28480 83711-60031

28480 10811-60151

28480 83711-60026

28480 83711-60009

28480 83711-20007

28480 83732-20011

28480 83711-20008

28480 83711-20042

28480 83711-20006

28480 70340-20016

28480 83711-20009

28480 83711-20039

28480 83711-20003

28480 83711-20004

28480 83711-60116

Y)

Manufacturer

Part

Number

Parts List 4-13

P

arts

List

4-14 Parts List

Figure

4-4. Cable

Assemblies

Location

Diagram

(Bottom

View)

P

arts

List

Figure 4-5. Figures Orientation Diagram, Top View

Parts List 4-15

P

arts

List

4-16 Parts List

Figure 4-6. Figures Orientation Diagram, Bottom View