HP 4396b schematic

Agilent

4396B Network/Spectrum/Impedance

Service Manual

Analyzer

This

number

F

manual

or

additional

numbers

applies

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SERIAL

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serial

1.00.

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A.

Agilent Part No. 04396-90121

Printed in Japan March 2001

Third Edition

Notice

The

information

This

document

reserved.

language

contains

No

part

without

contained

proprietary

of

this

the

prior

in

this

document

written

document

information

may

be

consent

is

subject

that

is

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of

the

Agilent

to

change

protected

reproduced,

T

echnologies.

without

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copyright.

or

notice

.

All

translated

rights

to

another

are

Agilent

T

echnologies

Component

1-3-2,

Hyogo

Murotani,

,

651-2241

T

est

Japan,

PGU-Kobe

Nishi-ku,

Japan

Ltd.

Kobe-shi,

c



Copyright Agilent Technologies Japan, Ltd. 1997, 2000, 2001

Manual Printing

The

manual's

changes

at

reprint

technical

May

1997

June

when

do

changes

2000

printing

a

new

not

cause

:

::

:

::

edition

are

incorporated.

::

:

::

History

date

and part

is

the

date to

:

number indicate

printed. (Minor

change.)

:

::

:

::

corrections and

The manual

::

:

::

:

its current

part number

:

First

Second

edition. The

updates that

Edition

printing date

are incorporated

changes when

(part

number:

(part

number:

extensive

04396-90121)

March

2001

:

::

:

::

:

Third

Edition

(part

number:

04396-90121)

iii

Safety Summary

The

following

service

W

ARNINGS

In

addition

,

and

elsewhere

it

general

repair

violates

of

safety

this

safety

instrument.

The

A

gilent

requirements

T

echnologies

.

precautions must

instrument. F

in

this

manual

standards

assumes

ailure to

may impair

of design,

no liability

be observed

comply with

the protection

manufacture,

for the

customer's failure

during all

phases of

these precautions

provided by

and intended

operation,

or with

the equipment.

use of

to

comply

the

with

specic

these

Note

4396B

in

Note

LEDs

CLASS

Ground

To

avoid

safety earth

DO

Do not

electrical

Keep

The

electric

NOT

Operate

operate

instrument in

Away

Instrument

shock

ground

the

From

Operating personnel

adjustments

with

the

with

the

circuits

power

before

must

cable

touching

be

comply

IEC1010-1.

in 4396B

1

LED

hazard,

by

the

supplied

In

An

instrument

such

Live

must not

made

by

connected.

removed.

them.

with

INST

4396B

are

Class

PRODUCT

the

instrument

power

Explosive

in

the

presence

an

environment

Circuits

remove

qualied

Under

T

o

avoid

ALLA

TION

INDOOR

1

in

accordance

chassis

cable

Atmosphere

of

constitutes

instrument

maintenance

certain

injuries

CA

TEGORY

USE

product.

and

with

earth

ammable

covers

.

personnel.

conditions

,

always

II

with

IEC825-1.

cabinet

blade

.

gasses

a

denite

Component

Do

,

dangerous

disconnect

and

POLLUTION

must

be

or

fumes

safety

replacement

not

replace

voltages

power

connected

.

Operation

hazard.

components

may

and

discharge

DEGREE

to

a

of

and

internal

exist

2

any

even

DO

NOT Service

Or

A

djust

Alone

Do not attempt internal service or adjustment unless another person, capable of rendering rst

aid and resuscitation, is present.

DO NOT Substitute P

Because of the danger of introducing additional hazards

arts Or Modify Instrument

, do not install substitute parts or

perform unauthorized modications to the instrument. Return the instrument to a Agilent

T

echnologies Sales and Service Oce for service and repair to ensure that safety features are

maintained.

iv

Dangerous

W

arnings

this

,

manual.

Procedure

such

as

the

Instructions

W

example

contained

arnings

below

in

,

precede

the

warnings

potentially dangerous

must

be followed.

procedures throughout

W

arning

Safety

General

Dangerous voltages

instrument. Use

this instrument.

Symbols

denitions

Instruction

necessary

Alternating

Direct

On

O

In

Out

of

safety

current.

(Supply).

position

symbols

manual

for

the

current.

of

push-button

of

push-button

, capable

of

extreme caution

used

on

equipment

symbol:

user

to

the

refer

product

to

switch.

causing

death,

when handling,

or

in

is

marked

the

instruction

are

manuals

with

manual.

present

testing,

are

listed

this

in

this

and

below

symbol

adjusting

.

when

it

is

Frame

equipment

This

condition

result

This

condition

result

This

procedure, practice

(or

chassis)

which normally

Warning

or the

in injury

Caution

or

in

damage

Note

sigh

terminal.

sign denotes

like,

which, if

or death

sign

the

like

to

to personnel.

denotes

,

which,

or

destruction

denotes important

, condition or the like

A

connection

include all

a

hazard.

not

correctly

a

hazard.

if

not

correctly

of

information.

exposed

It

calls

It

calls

part

or

, which

to

the

frame

metal

attention

performed

attention

performed

all

of

It

(chassis) of

structures

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or

to

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the

product.

calls

attention

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.

procedure

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Axed to product containing static sensitive devices use anti-static handling

procedures to prevent electrostatic discharge damage to component.

,

v

Certication

Agilent

of

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International

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During

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with

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General

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repair

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Agilent T

the

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echnologies further

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one

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Information

period, Agilent

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be defective

product

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Institute of

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to

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Agilent

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Agilent

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The

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Of

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vi

Exclusive Remedies

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remedies

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Assistance

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vii

Typeface Conventions

Bold

Italics

Computer

4

HARDKEYS

N

NN

N

SOFTKEYS

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are

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viii

Documentation Map

The

following

manuals

are

available for

the analyzer

.

User's

Guide

The User's

make

basic

Guide walks

measurements,

measurement

T

ask

Reference

T

ask

Reference

step-by-step

instructions

Function Reference

The

Function

softkeys

system

Programming

The

analyzer

GPIB

Command

The

also

features

HP

Instrument

The

.

It

also

performance

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Programming

and

Reference

GPIB

Command

provides

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ASIC

HP

Instrument

programming

provide

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ASIC

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general

Programming

B

examples

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Guide

describes

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information

to

the

Manual

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ASIC

language

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programming

T

ASIC

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you through

explains commonly

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After

you receive

to

learn

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describes

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all

information

some

topics

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how

HP

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provides

on

the

status

SCPI

standard).

Set,

User's

provide

Handbook

some

reference

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HP

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eference

system setup

used features

your analyzer

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accessories available

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ASIC

with

all

you

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into

Interface

features.

available

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to

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power-on, shows

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application

this

manual.

provides

front panel

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the

analyzer

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trigger

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and

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erformance

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erformance

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(Option 0B

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est

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verify

The Service Manual explains how to adjust, troubleshoot, and

This manual is option 0BW only

.

conformance

repair the instrument.

to

published

ix

Contents

1.

General

INTRODUCTION

ORGANIZATION

TABLE

2.

A

djustments

Introduction

Safety

Required

W

arm-up

Instrument Cover

Order

Updating

A

Controller

Updating

40

Required

Procedure

520

Required

Procedure

CAL

Required

Procedure

Comb

Required

Procedure

Step

Required

Procedure . . . . . . . . . . . . .

Second Local PLL Lock A

Required Equipment . . . . . . . . . . . . . . . . . . . . . .

Procedure . . . . . . . . . . . . . . . . . . . . . . . .

DC

Required

Procedure .

0/90Tracking A

Required Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-23

Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-23

Band Pass Filters Adjustments . ..... ...... ...... ...... 2-26

Required Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-26

Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-26

Information

.

..

.

OF

SERVICE

OF

SERVICE

and

.

Considerations

Equipment

for

A

djustments

Of

A

djustments

Correction

djustments

Keyboard

MHz

Reference

MHz

OUT

Generator

Pretune Correction

Oset and Hold Step A

3 MHz Band Pass Filter Adjustment.... ...... ...... .... 2-26

1 MHz BPF Band Width Adjustment . . . . . . . . . . . . . . . . . . . . 2-27

and

Requirement

Correction

Equipment

.

Level

Equipment

.

Level

Equipment

.

Equipment .

..

Equipment

Equipment........................

TEST

Correction

.

Removal .

.

Constants

Program

Mouse

Constants

Oscillator

.

A

djustment

.

A

djustment

.

A

djustment

..

.

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

djustment ...... ...

MANU

EQUIPMENT

.

and

..

.

Operation

.

Frequency

.

..

.

..

.

..

.

Constants .

.

djustment.. ...... ...... ...

djustment ...................

AL

Constants

.

Correction

.

using

the

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.

Constants

.

A

djustments

.

A

djustment

.

..

.

..

.

..

.

..

.

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

.

..

.

Program

.

..

.

..

.

..

.

..

.

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

.

..

.

..

.

..

.

..

.

..

.

..

.

.........

.......

.

..

.

..

.

.....

......

.

..

.

..

.

....

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.

1-1

. 1-1

. 1-3

.

2-1

.

2-1

.

2-2

.

2-2

.

2-2

.

2-3

.

2-3

.

2-3

.

2-4

.

2-5

.

2-6

.

2-6

.

2-6

.

2-8

.

2-8

.

2-10

.

2-10

.

2-12

.

2-12

2-15

.

2-15

2-16

2-18

2-23

Contents-1

Final

Gain A

Required

Procedure

Source

RF

Spectrum

Network

Crystal

IF

Network

10

Mixer Local

Required

Procedure

OUT

Required

Procedure

Required

Procedure

Required

Procedure

Required

Procedure

Gain

Required

Procedure

Required

Procedure

MHz

Required

Procedure

djustment .

Equipment .

..

Equipment .

..

Level

Correction

Equipment

.

Analyzer

Equipment

.

Analyzer

Equipment

.

Filter

Correction

Equipment

.

Errors

Reference

Correction

Equipment

.

Analyzer

Equipment

.

Equipment

.

Leakage

.

Absolute

.

Absolute

.

Constants

.

Magnitude

.

..

Oscillator

.

..

.

A

djustment

.

Constants

.

Magnitude

.

Magnitude

.

..

Constants

.

Ratio/Phase

.

..

.

Frequency

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.

..

Correction

.

..

Correction

.

..

.

..

.

..

Correction

.

Adjustment

.

..

.

..

.

..

.

Constants

..

.

..

.

Constants

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.

Constants

.

(Option 1D5

.

..

.

..

.

Only)

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.

..

2-29

.

2-29

.

2-29

. 2-31

.

2-31

.

2-31

.

2-33

.

2-33

.

2-33

.

2-34

.

2-34

.

2-34

2-35

.

2-35

.

2-35

.

2-36

.

2-36

.

2-36

.

2-37

.

2-37

.

2-37

. 2-39

.

2-39

.

2-41

.

2-41

3.

Troubleshooting

INTRODUCTION

TROUBLESHOOTING

ST

ART HERE

INSPECT

Check

OPERA

T

est

Procedure

INSPECT

Check the GPIB Interface

Check the P

Check the mini DIN Keyboard Connector

4. Isolate F

INTRODUCTION . . . . . . . . . . . . . . . . . . . . . .

OPERATOR'S CHECK F

Check RF OUT Frequency

Check RF OUT Power Level ........................ 4-2

PERFORMANCE TESTS FAILURE TROUBLESHOOTING ...... ...... 4-3

Perform Adjustments and Correction Constants ..... ...... .... 4-3

Troubleshoot Suspicious Functional Group . . . . . . . . . . . . . . . . . . 4-4

THE

the

Error

TOR'S

Equipment

THE

aulty Group Troubleshooting

..

.

SUMMARY .

..

.

POWER

F

an

Front

Message

CHECK

.

REAR

arallel Interface

ON

.

P

anel

LEDs

.

P

ANEL

AILURE TROUBLESHOOTING

.

..

.

..

SEQUENCE

.

and

.

..

FEA

TURE

......

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

.

Displays

.

..

.

..

.

..

.

..

.

..

.

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

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

......

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

...... ...

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

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.

....

.

3-1

.

3-1

.

3-3

.

3-4

.

3-4

.

3-4

.

3-4

.

3-5

.

3-5

. 3-5

.

3-9

4-1

4-2

Contents-2

5.

Power

INTRODUCTION

ST

ART HERE

1.

Check Error

2.

Check the

3.

Check the

A50

4.

Check

Measure

5.

Check

6.

Run

Internal

FIND

OUT

1.

Check

2.

Check

FIND

OUT

1.

Disconnect

2.

Disconnect

3.

Disconnect

4.

Remove

FIND

OUT

1.

Check

2.

Check

3.

Disconnect

4.

Remove

TROUBLESHOOT

1.

Troubleshoot

2. Troubleshoot

TROUBLESHOOT

1.

Check the

2.

Check the

3.

Remove Assemblies

4.

Measure the

Supply Troubleshooting

..

.

F

an

A50

Shutdown

the

A1

the

A1

the

A2

the

Internal

T

est

WHY

THE

the

Line

the

A50

WHY

THE

the

Assemblies

WHY

THE

the

A40

the

A50

Cables

Assemblies

A40

A50 DC-DC

Messages

is

SHUTDOWN

LED

+5

Eight

4:

A2

V

SHUTDOWN

Cable

Pre-Regulator

DC-DC

THE

the

THE A2

Pre-Regulator

A2 P

.

Rotating

.

VD

LED

VD

V

oltage

LEDs

T

est

4:

A2

POST

REGULA

F

AN

IS

NOT

oltage

,

Selector

A50

SHUTDOWN

from

.

A1

+5

VD

Converter .

on

the

A1 CPU

.

..

F

AN

AND

F

an

.

A50

DC-DC

POST-REGULA

Converter

..

.

ost

Regulator

.

LED

.

POST

ROT

Switch

LED

the

A50J1

the

A51J2

the

A1J10

.

LED

.

..

THE

..

.

Converter

.

Output

.

..

.

..

.

..

.

..

.

REGULA

TOR

A

TING

.

LED

.

IS

NOT

.

..

.

A50

.

TOR

.

TOR

.

..

Setting,

.

..

IS

OFF

.

..

.

ON

STEADILY

.

..

.

DC-DC CONVERTER

.

V

oltages

..

.

..

.

..

.

..

and

..

.

..

.

..

.

..

.

..

.

..

Fuse

..

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.

5-1

.

5-3

.

5-3

.

5-3

. 5-3

.

5-4

.

5-5

.

5-5

.

5-5

.

5-6

.

5-7

.

5-8

.

5-8

.

5-8

.

5-9

.

5-9

.

5-9

.

5-9

.

5-9

.

5-10

.

5-10

.

5-10

.

5-11

.

5-12

.

5-13

.

5-13

.

5-14

.

5-16

. 5-16

5-16

.

5-16

6.

Digital

INTRODUCTION

A1

FIRMW

START HERE

TROUBLESHOOT THE A51 GSP and A52 LCD . . . . . . . . . . . . . . . . . 6-13

Control

CPU

Replacement

ARE

Ordering

Installing

1. Check the P

Check the

Check the A1 Eight LEDs

2.CheckErrorMessages........ ...... ....

Check the P

3. Check the A1 DRAM and Flash Memory

4. Check the A1 V

5. Check the A30 Front Keyboard ... ..... ...... ...... . 6-11

6. Check the A53 FDD . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-11

7. Check the A32 I-BASIC Interface and the mini DIN Keyboard ....... 6-12

1. Run the Internal Test 3: A51 GSP .... ...... ..... ..... 6-13

2. Check the A52 LCD(Liquid Crystal Display) . . . . . . . . . . . . . . . . 6-13

Troubleshooting

.

..

.

..

INST

ALLA

TION

the

Firmware

the

Firmware

.......

ower On Sequence . . . .

5

and

4

Ch 1

owerOnSelftest .................

olatileMemory..................

.

..

Diskette

.

5

4

Ch 2

.

..

.

..

.

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

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

Operations . . . . . . . . . .

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

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

..

.

..

.

..

.

..

.

...... ...

...... .

...... ..

......

.

....

.

6-1

.

6-3

.

6-4

.

6-4

.

6-4

6-6

6-7

. 6-10

6-11

Contents-3

7.

Source Group

INTRODUCTION

SOURCE

Start

Check

ST

ART

CHECK

1.

Check

2.

Check

3.

Check

4.

Check

5.

Check

6.

Check

CHECK

1.

Check

2.

Check

CHECK

1.

Check

CHECK

1.

Check

2. Check

CHECK

1.

Check the

CHECK

1.

Check A7

CHECK

Troubleshooting

..

.

GROUP TROUBLESHOOTING

Here .

A5 Synthesizer

A4A1 1st

an

A3A2

an

A7

A60

HERE

A5

A4A1

AN

A3A2

AN A3A3

A7 OUTPUT

THE A60

.

LO

Outputs

A3A1

ALC

2nd

LO

Outputs

A3A3

Source

Output

SYNTHESIZER

the

A3A1

the

Attenuator

High

Stability

.

CAL

OUT

CAL

OUT's

INT

REF

FRA

C

N

STEP

OSC

520

MHz

EXT

REF

1ST

LO

OUTPUTS

1st

LO

OSC

1st

LO

OSC Signal

ALC

21.42

MHz

2ND

LO

OUTPUTS

2nd

Local

2.05858

SOURCE

A3A3

Control Signals

RF

ATTENU

HIGH ST

.

Outputs

Output

Frequency

.

OUTPUTS

Signal

Spurious

Signal

OSC

Signal

Operation

Signal

OUTPUT

Signal .

Oscillator

GHz

Signal

OUTPUT

Signal

A

ABILITY

.

Control

.

TOR

.

SUMMARY

.

..

.

Signals

Reference

..

.

..

.

at

A4A1J3

at A4A1J4

..

.

..

.

..

.

Signal

.

CONTROL

.

FREQUENCY

..

.

(Option

.

..

.

..

.

..

.

..

.

SIGNALS

.

REFERENCE

..

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.

1D5)

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.

. 7-3

.

. 7-3

.

..

.

. 7-4

.

. 7-32

.

7-1

7-3

7-4

7-5

7-7

7-8

7-9

7-11

7-13

7-16

7-18

7-19

7-21

7-23

7-26

7-27

7-30

7-32

7-34

8.

Receiver

INTRODUCTION

RECEIVER

Start

Check

Check Signal Inputs to A4A2 Receiver RF . . .

START HERE

CHECK A8 INPUT A

CHECK A9 INPUT MUL

CHECK SIGNAL INPUTS TO THE A4A2 RECEIVER RF . . . . . . . . . . . . .

Check the Input Signal to A4A2J3

Check the Input Signal to A4A2J12 . . . . . . . . . . . . . . . . . .

Contents-4

Group

Here

A8

A9

Troubleshooting

.

GROUP

.

Output

Input

TROUBLESHOOTING

.

Attenuator

Multiplexer

........

TTENUATOR CONTROL SIGNALS

.

..

.

SUMMARY

.

..

Control

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

TIPLEXER CONTROL SIGNALS . . . . . . . . . . . . .

Signals

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

.

..

.

..

.

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

...

..........

.

..

.

..

.

..

.

....

...

8-1

8-3

8-4

8-5

8-7

8-9

9.

Accessories

INTRODUCTION

VERIFY

Using

Large

Odd

INSPECT

V

erify

Inspect

10.

Service

INTRODUCTION

SERVICE

N

TESTS

N

SERVICE

N

FIRMWARE

TESTS MENU

N

NN

EXECUTE TEST

NN

N

INTERNAL

N

EXTERNAL

N

ADJUSTMENT

N

DISPLAY

N

NN

N

ALL

N

MISC

T

est

Diagnostic

T

est Descriptions

Troubleshooting

..

.

..

.

9-1

OPERATIONS

75 

Connectors

Spurious Signals

Appearing Opens

THE

CONNECTORS

THE

A

CCESSORIES

the

Probe

the

T

est

the

Calibration

V

erify

Shorts

K

ey

Menus

MENU

N

NN

.

N

NN

N

NN

N

NN

N

NN

N

NN

N

NN

N

NN

N

EXT

N

NN

TESTS

Status

N

NN

N

INTERNAL

0: ALL

1: A1

2: A1

3: A51

4: A2

5: A6

6: A5 REFERENCE OSC

7: A5 FRA

8: A5 STEP OSC . . . . . . . . . . . . . . . . . .

9: A4A1 1ST LO OSC

10: A3A2 2ND LO OSC . . .

11: A3A1 DIVIDER

12: A6 3RD LO OSC

13: A3A1 SOURCE OSC

14: A6 3RD IF DC OFFSET . . . . . . . . . . . . . . . . . . . . . . . . 10-9

15: A6 SEQUENCER . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-9

16: A3A1 ALC .. ...... ..... ...... ...... .... 10-9

NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN

EXTERNAL TESTS

17: FRONT PANEL DIAG. ........................ 10-12

18: DSK DR FAULTISOL'N........................ 10-12

19: POWER SWEEP LINEARITY ..................... 10-12

N

CPU .

VOLA

POST REGULA

A/D

.

N

NN

MODES

N

NN

REVISION

..

N

NN

N

NN

N

TESTS

N

TESTS

N

NN

TESTS

N

NN

N

TESTS

N

NN

N

TESTS

N

(

:DIAG:TEST

.

T

ests

N

TESTS

INT .

TILE MEMORY

GSP .

CONVERTER

CTIONAL N OSC . . . . . . . . . . . . . . .

.

..

with

50



Connectors

in

the

Spectrum

and

Shorts

.

P

ower

Set

and

.

N

(

:DIAG:SERV:MODE

N

.

(

:DIAG:TEST:EXET

N

(

:DIAG:TEST

N

NN

(

:DIAG:TEST

N

(

:DIAG:TEST 48

N

(

:DIAG:TEST

.

..

N

NN

N

.

..

.

Kit

.

Opens

.

N

.

N

(

:DIAG:TEST

.

..

(

:DIAG:FREV?

.

0

)

17

)

53

)

58

)

.

..

.

..

.

..

.

TOR .

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

.....

....

............................ 10-9

..

.

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

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

......

Measurement

in

the

Network

.

..

.

..

{ON|1}

)

.

).

.

)

.

41

)

.

..

.

..

.

..

.

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

.

..

.

Measurement

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.

)

.

..

.

..

.

..

.

..

.

..

.

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

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.

..

...... ..

...... ...

.........

........

.

..

.

..

.

..

.

..

.

..

.

..

.

9-2

. 9-2

.

9-3

.

9-4

.

9-4

.

9-5

.

9-5

.

9-5

.

10-1

.

10-3

.

10-3

.

10-3

.

10-4

. 10-4

.

10-4

.

10-5

.

10-5

.

10-5

.

10-5

.

10-5

. 10-5

.

10-6

.

10-7

.

10-7

.

10-7

.

10-7

. 10-7

.

10-8

.

10-8

10-9

Contents-5

20:

OUTPUT A

21:

INPUT A

22:

RF TO

23:

STO

24:

S INPUT

25:

S INPUT

26:

S

INPUT

27:

FRA

CTION

28:

RF

TO

29:

NA

CROSST

30:

R

INPUT

31:

RANGING

32:

A/R

RA

33:

A

INPUT

34:

B/R

RA

35:

B

INPUT

36:

RESOLUTION

37:

IF

GAIN

38:

PHASE

39:

SPURIOUS

40:

X'T

N

ADJUSTMENT

41:

42:

43:

44:

45:

46:

47: 1

N

DISPLAY TESTS

48:

49:

50:

51:

52:

N

ALL

53:

54:

55:

56:

57: ALL EXT 5

NNNNNN

N

MISC TESTS

58: IMPED

SERVICE MODES MENU . . . . . . . . . . . . . . . . . . . .

NNNNNNNNNNNNNNN

N

BUS MEAS [OFF]

NNNN

NNNNNNNNNNNNNNNNNNNNNNNNN

CORRECTION CONSTANTS

NNNNNNNN

IF

NNNNNNN

NNNNNNNNNN

SYNTH

NNNNNNNNNNNNNNNNNNNN

SOURCE

Service Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-20

BUSMEASUREMENTMENU.... ..... ...... ...... .... 10-21

NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN

BUS MEAS on OFF(:DIAG:SERV:BUS:STAT {ON|OFF}

NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN

DC BUS [OFF](:DIAG:SERV:BUS:DC<numeric>) .. ..... ...... 10-21

AL

N

NN

N

DC

OFFST/HLD

0/90

FINAL

2nd

LO

SOURCE

3

MHZ

N

NN

N

TEST

N

NN

N

EXT

ALL EXT

ALL

NNNNNNNNNNNNNNNNNNNNNNNNN

..........

.................................. 10-19

.................................. 10-20

TTENUA

TTENU

S

L

VL

A

CROSST

COMPRESSION

RESIDU

NOISE

SPURIOUS

R

L

VL

ALK

COMPRESSION

.

TIO

A

COMPRESSION

TIO

A

CCURA

COMPRESSION

.

NOISE

.

FIL

TER

N

NN

TESTS

DEG

TRA

GAIN

PLL

LOCK

MIXER

BPF

ADJ

BPF

N

EXT

NNNNNNNNNNNNNNNNNNNNNNNNN

ADJ

N

NN

N

P

A

TTERN

P

A

TTERN

P

A

TTERN

P

A

TTERN

P

A

TTERN

N

NN

TESTS

1 .

2 .

3 .

4

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

ANCE TEST KIT . . . . . . . . . . . . . . . . .

NNN

TOR .

A

TOR

&

FL

TNESS

ALK

&

.

CCURA

B

.

RESPONSE

NN

N

CKING ADJ

ADJ

.

..... .....

.....

.

ALS

LEVEL

FL

TNESS

&

NOISE

.

CY

ANDWIDTH

.

N

.

STEP

..

ADJ

LEAK

.

1

.

2

.

3

.

4

..

5

.

..

.

..

.

..

.

NNNNNNNN

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

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

.

..

.

ADJ .

..

ADJ

.

..

.

..

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

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.

..

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

)............ 10-21

..

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.

...... ...

...... .

......

. 10-12

.

. 10-13

.

. 10-16

.

. 10-17

.

. 10-17

.

. 10-19

10-13

10-14

10-15

10-16

10-17

10-18

10-19

Contents-6

N

NN

N

NN

FREQ

N

Bus

DC

Frequency

CORRECTION CONST

NNNNNNNNNNNNNNN

NNNN

NNNNNNNNNNNNNNNNNN

NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN

Correction Constants . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-33

IF CONTROL MENU .. ...... ...... ..... ...... .... 10-35

NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN

BUS

N

NN

N

AZ

SWITCH

N

NN

WAIT

Measurement

Bus

0:

1:

2:

3:

4:

5:

6:

7:

8:

9:

10:

11:

12:

13:

14:

15:

16:

17:

18:

19: STEP

20:

21:

22:

23:

24:

25:

26:

0:

1:

2:

3:

4: FN OSC (Fractional N Oscillator) . . . . . . . . . . . . .

5: REF OSC (Reference Oscillator)

6: 3RD LO OSC (Third Local Oscillator)

7: SAMPLE HOLD . . . . . . . . . . . . . . . . . . .

FRQ RSP CC ON/off

NNNNNNNNNNNNNNNNNNNNNNNNN

XTAL CC ON/off

IF GAIN CC ON/off(:DIAG:SERV:CCON:IFG {OFF|ON|0|1}

SOURCE CC ON/off(:DIAG:SERV:CCON:SOUR {OFF|ON|0|1}

3rd LO [ ](:DIAG:SERV:IF:TLOC:MODE {AUTO|AC|DC}

IF BPF [ ](:DIAG:SERV:IF:BPF:MODE {AUTO|BW3M|BW1M|XTAL}

N

NN

N

COUNT

Node

NONE

+5

V

(A

0

15

V

0

12.6

0

5

V

(

+5

V

(2.025

+5.3

V

+8.5

V

+15

V

+15

V

+22

F

AN

+65

SRC

VTUNE

2ND

DET

L

VL

CONT

D

A

C

1ST

LO

FN

VTUNE

FN

INTEG

REF

3RD

2ND

AD

VREF

GND

OFF

SOURCE

DIVIDER

STEP

NNNNNNNNNNNNNNNNNNNNNNNNN

NNNNNNNNNNNNNNNNN

NNNN

N

[OFF]

N

NN

(

V

0

(A

(1.92

V

POWER

V

LO

OUT

VTUNE

LO

IF

(Ground)

Bus

.

OSC

NNNNNNNNNNNNNNN

(

N

on

N

0

(2.1465

(1.8955

:DIAG:SERV:BUS:FREQ

NN

N

OFF

(

:DIAG:SERV:BUS:AZER {OFF|ON|0|1}

(

:DIAG:SERV:BUS:WAIT

.

Procedure

V

alues

.

Descriptions

.

UX)

(2.025

1.92

U)

(

0

2.124

2.025

U)

UX)

(1.92

U)

(2.002

(2.0605 U)

.

U)

.

(Source Oscillator

VTUNE

(Detector

(Level

VTUNE

(Step

(Fractional

OUT

(Reference

VTUNE

L

VL

(Second

(A/D

Node

Descriptions

.

OSC

(Source

OUT

(Divider

(Step

Oscillator)

ANTS MENU

NNNNNNNNNNNNN

(

:DIAG:SERV:CCON:XTAL {OFF|ON|0|1}

NNNNNNNNNNNNNN

.

U)

.

U)

.

..

.

..

.

U)

.

..

.

..

(Second

Output)

V

ernier

D

A

C

Output

(First

Local

Oscillator

(Fractional

(Third

IF

Converter

.

..

Oscillator)

Output)

(

:DIAG:SERV:CCON:FRES {OFF|ON|0|1}

..

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.

VCO

Local Oscillator

.

Control

N

Oscillator

Local

Signal

V

.

..

V

oltage)

Oscillator

V

CO

N

Oscillator

V

Oscillator

Level)

oltage

Reference)

.

..

.

..

.

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

..

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

<

numeric

..

.

..

.

..

.

..

.

Tuning V

.

oltage)

.

V

CO

Turning

V

CO

Integrator

CO

Tuning

V

.

..

.

..

.

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

..

.

..

.

..

.

oltage) .

VCO

Tuning

.

Turning

V

oltage)

Turning

CO

Tuning

.

..

.

..

.

..

>

) .

..

).

..

.

..

.

..

.

..

.

V

oltage)

.

V

oltage)

.

V

oltage)

Output

V

oltage)

V

oltage)

.

..

.

..

.

..

.

) .........

).......... 10-36

.

V

oltage)

.

..

.

..

.

..

.

.......

.........

). . . . . . . .

) ........ 10-33

) ..... 10-36

..

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.....

....

..

.

..

.

..

.

. 10-25

.

..

. 10-26

.

10-21

10-22

10-23

10-24

10-25

10-26

10-27

10-28

10-29

10-30

10-31

10-32

Contents-7

N

NN

N

IF

GAIN

N

NN

IF

N

IF

N

S/H

N

A/D

SYNTHESIZER

N

1st

N

FN

N

STEP

N

FREQUENCY

SOURCE

N

SOURCE

N

ALC

N

OUTPUT

N

LVL

N

LVL

N

NN

GAIN

N

GAIN

BOOTLO

N

SYSTEM

N

SYSTEM

N

PREVIEW

N

REBOOT

NN

RANGE

N

NN

N

LPF

{AUTO|BW5K|BW15K|BW50K|BW150K|THR}

N

NN

N

BW

N

NN

N

MUX [

N

NN

LO

N

NN

N

OSC

N

NN

N

OSC

N

NN

N

CONTROL

N

NN

N

NN

N

LOOP

N

NN

N

{AUTO|DB0|DB10|DB20|DB30|DB40|DB50|DB60}

N

DAC

N

NN

N

DAC VALUE

NN

N

DAC

N

DAC

ADER

N

NN

N

NN

N

NN

N

[

NN

N

[

N

NN

[

]

N

NN

[]

N

NN

N

OSC

N

[

]

N

[

N

NN

N

AUTO

N

open

N

ATT

N

AUTO

N

NN

AUTO

N

NN

N

VALUE

N

UPDATE

N

BACKUP

N

NN

DISK

N

.

N

]

.

..

.

..

.

..

.

..

.

..

.

N

NN

]

.

..

N

(

:DIAG:SERV:IF:LPF:MODE

N

(

:DIAG:SERV:IF:SHBW:MODE

NN

N

]

(

:DIAG:SERV:IF:ADMX:MODE {AUTO|ALT|DEG0|DEG90}

CONTROL

N

NN

[

]

(

N

NN

OFFSET

N

NN

N

:DIAG:SYNT:FLOC:MODE

(

:DIAG:SERV:STNT:FN:MODE

NN

]

.

..

NN

N

(

MENU

N

NN

N

man

(

N

NN

N

NN

[

N

NN

N

MENU

N

NN

N

.

:DIAG:SERV:SOUR:MODE

NN

N

CLOSE

NN

N

]

(

:DIAG:SERV:SOUR:ATT

N

man

NN

N

(

N

(

:DIAG:SERV:SOUR:LEV:DAC:VAL

N

NN

man

N

(

:DIAG:SERV:SYNT:STEP:DAC:VAL

N

NN

N

.

N

.

N

.

..

MENU

..

:DIAG:SERV:SYNT:FREQ:OFFS

.

N

(

:DIAG:SERV:SOUR:ALCL:

:DIAG:SERV:SOUR:LEV:DAC:MODE

(

:DIAG:SERV:SOUR:GAIN:DAC:MODE

.

..

.

..

.

..

.

).

..

.

{AUTO|NARR|MIDD|WIDE}

.

..

.

{AUTO|SING|TRIP}

{AUTO|NARR|WIDE}

.

<

numeric

..

.

{AUTO|MAN}

.

..

.

..

)

.

{OPEN|CLOSE}

)

.

{AUTO|MAN}

<

numeric

<

.

>

{AUTO|MAN}

numeric

.

)

>

.

)

..

.

)

.

)

>

.

..

.

..

.

..

).

.

)

.

)

..

) .

.

..

.

..

.

).

.

)

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.

. 10-38

.

. 10-41

.

..

.

. 10-43

.

..

.

10-36

10-37

10-38

10-39

10-40

10-41

10-42

10-43

10-44

10-45

10-46

11.

Theory

ANAL

POWER

DIGITAL CONTROL OPERATION . ...... ..... ...... ..... 11-10

of

Operation

YZER OPERA

Spectrum

Network

T

est Sets

Line

A40

A50 DC-DC

Switching Regulator 1

Switching Regulator 2

Regulated +5V Digital Supply (+5 VD)

A50 Shutdown LED

A2 P

Shutdown Circuit

Seven Status LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-8

A7 Input and A8 Output Attenuator Drive Circuit . . . . . . . . . . . . . 11-9

A1CPU........ ...... ...... ..... ...... ... 11-12

A30 Front-Panel Keyboard . . . . . . . . . . . . . . . . . . . . . . . . . 11-12

A31 I/O Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-12

A32 I-BASIC Interface .... ...... ...... ...... ..... 11-12

Analyzer Operation

YZER FUNCTIONAL

SUPPLY

P

ower

Preregulator ........................

ost-Regulator .. ...... ....

TION .

..

OPERATION

Module .

Converter ........................

..

.

..

.

..

.

..

.

..

GROUPS .

..

.

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

.

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

...........

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

..

.

..

.

..

.

..

.

..

.

..

.

..

.

...... .

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

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

...........

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

.

..

.

..

.

..

.

.....

..

.

..

.

...

. 11-1

.

. 11-2

.

..

.

. 11-7

11-2

11-3

11-4

11-5

11-7

11-8

Contents-8

A51

GSP .

A54

Inverter .

A52

LCD (Liquid

A53

FDD .

SOURCE

A5

Synthesizer .

REF

OSC

Leveler

FRA

C

STEP

Multiplier

A4A1

A3A1

A3A2

A3A3

A7

RECEIVER

A8

A9 Input

A4A2

A6

1st

Local

Single-Loop

Triple-Loop

Digital

ALC

Divider

Source

ALC

2nd

Local

Source

Output

Input

Receiver RF

Receiver IF

IF

BPFs and

3rd

Converter and

Sample/Hold,

Gains

..

.

THEORY .

.

N

OSC

.

(X

13)

LO

.

OSC

Circuit

Operation

Control

.

OSC

.

LO

.

OSC

First

Mixer

.

Attenuator

THEORY

Attenuator

Multiplexer

LPFs .

A/D Converter

W

,

X,

Y

,

..

.

Crystal

.

Signals

.

Circuit

.

..

.

3rd LO

and

Z

.

Display)

.

at

for

.

..

.

and

.

Frequency

the

A4A2

.

..

.

..

.

..

.

..

.

..

.

..

.

,and

Ranges

.

..

.

..

.

..

.

..

.

..

.

..

Spans

Receiver

..

.

..

.

..

.

Sequencer

F

and

.

..

.

..

.

R

..

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.

..

>



RF

..

.

..

.

45

..

.

..

.

..

MHz

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.

11-13

.

11-13

. 11-13

.

11-13

.

11-14

.

11-16

.

11-16

.

11-16

.

11-16

.

11-17

.

11-18

.

11-18

.

11-18

11-19

.

11-19

.

11-19

.

11-19

.

11-19

.

11-20

.

11-20

.

11-20

. 11-21

.

11-21

.

11-23

.

11-25

.

11-25

.

11-25

.

11-26

.

11-26

. 11-27

.

11-27

.

11-27

12.

Replaceable

Introduction

Ordering

Direct

Exchange

Replaceable P

13. Post Repair Procedures

INTRODUCTION . . . . . . . . . . . . . . . . . . . . .

POST REP

P

arts

.

Information

Mail

Order

Assemblies

arts List

AIR PROCEDURES . . . . . . . . . . . . . . . . . .

.

System

.

......

.

..

.

..

.

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

..

.

..

.

..

.

..

.

..

.

..

.

..

.

...... ....

...... .

.

12-1

.

12-1

.

12-1

.

12-2

13-1

Contents-9

A.

Manual Changes

Introduction

Manual

Serial

Number .

B

. A20

C.

Motherboard

P

ower

..

.

Changes .

.

Requirement

.

Assignment

.

..

.

A

-1

.

..

.

A

-1

.

..

.

A

-2

Replacing Fuse

Fuse

Selection

P

ower Requirements

P

ower Cable

.

Messages

Error

Messages

in

Index

..

.

Alphabetical

Numerical

.

Order

.

Order

.

..

.

C-1

.

..

.

C-1

.

..

.

C-2

.

..

.

C-2

.

..

.

Messages-1

.

..

.

Messages-9

Contents-10

Figures

2-1. Updating

2-2. 40

2-3. 40

2-4. 520

2-5. 520

2-6.

2-7.

2-8.

2-9.

2-10. Comb

2-11.

2-12. Second

2-13. Plug

2-14. DC

2-15. DC

2-16. DC

2-17.

2-18.

2-19.

2-20.

2-21.

2-22.

2-23.

2-24.

2-25.

2-26.

2-27.

2-28.

2-29.

2-30.

2-31. Network

2-32. Crystal Filter Correction Constants Setup

2-33. IF Gain Errors Correction Constants

2-34. IF Gain Errors Correction Constants Setup

2-35. Network Analyzer Magnitude Ratio/Phase Correction Constants Setup

2-36. Network Analyzer Magnitude Ratio/Phase Correction Constants Setup

2-37. 10 MHz Reference Oscillator Frequency A

2-38. 10 MHz Reference Oscillator Frequency A

3-1. Troubleshooting Organization . . . . . . . . . . . . . . . . .

3-2. ALL EXT 1 Test Setup ........................... 3-5

3-3. Displayed Result of ALL EXT Test .. ...... ...... ..... .. 3-6

3-4. ALL EXT 2 Test Setup ........................... 3-6

3-5. ALL EXT 3 Test Setup ........................... 3-7

3-6. ALL EXT 4 Test Setup ........................... 3-7

3-7. ALL EXT 5 Test Setup ........................... 3-8

4-1. Recommended Adjustments and Correction Constants.. ...... ..... 4-3

MHz

CAL

Comb

Second

Hold

Plug



/90Tracking

0



/90Tracking

0

Plug

Band

Final

Second

RF

OUT

Spectrum Analyzer

Correction

Reference

MHz Level

OUT

Level

OUT

Level

Generator

Local

PLL

Local

PLL

Locations .

Oset

and

A

djustment

Step

A

djustment

Locations

P

ass

Filters

P

ass

Filters

Gain

A

djustment

Gain

A

djustment

Local

Leakage A

Local

Leakage A

Level Correction

Analyzer

Constants

Oscillator

A

djustment

A

djustment

A

djustment

A

djustment

A

djustment

A

djustment

Output

A

djustment

A

djustment

.

Hold

Step

Hold

Step

.

A

djustment

A

djustment

.

A

djustments

A

djustment

Absolute Magnitude

Absolute

Location

Setup

.

A

djustment

A

djustment

W

aveform

W

aveform

.

Setup

Location

djustment Location

djustment Setup

Constants Setup

Setup

Frequency

.

Setup

Location

Setup

Location

.

Setup

Locations

.

Locations

.

Magnitude

.

Location

Setup

.

..

Setup

.

..

.

Setup1.......... ...... .

.

A

djustment

A

djustment

.

Setup

Locations

.

..

.

..

.

..

.

..

Correction Constants

Correction

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

2.................

djustment Location

djustment Setup

.

..

.

..

.

..

.

..

Constants

Setup

Location

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.

Setup .

Setup

...... ...

..........

.......

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.

1. . . .

2. . . .

..

.

..

.

..

.

..

. 2-19

.

. 2-19

.

..

.

. 2-35

...

2-10

2-11

2-12

2-13

2-14

2-16

2-17

2-18

2-20

2-21

2-22

2-23

2-24

2-25

2-26

2-27

2-29

2-30

2-31

2-32

2-33

2-34

2-36

2-37

2-38

2-39

2-40

2-41

2-42

2-5

2-6

2-7

2-8

2-9

3-2

Contents-11

5-1.

Power

5-2.

A50 SHUTDOWN

5-3.

A1 +5

5-4.

A2 Eight

5-5.

Displayed T

5-6.

Removing Line

5-7.

A40J1

5-8.

A1

5-9.

F

5-10.

A50

5-11.

A2

5-12.

P

5-13.

P

5-14.

P

6-1.

Digital

6-2.

A1

6-3.

Firmware

6-4.

Bootloader

6-5.

A1

6-6.

Bootloader

7-1.

Source

7-2.

External

7-3.

A5

7-4.

CAL

7-5.

Typical

7-6.

INT

7-7.

Typical

7-8. Typical

7-9.

FRAC

7-10.

FRAC

7-11.

STEP OSC

7-12.

Typical STEP

7-13.

Typical 520

7-14.

520

7-15.

EXT

7-16.

1st

7-17.

Typical

7-18.

Typical

7-19.

1st

7-20.

ALC

7-21. Typical 21.42 MHz Signal . . . . .

7-22. 2nd LO OSC T

7-23. Typical 2nd Local Oscillator Signal

7-24. Source IF T

7-25. Typical Source IF

7-26. A3A3 RF Signal T

7-27. A7 Output Attenuator Control Signals . . . . . . . . . . . . . . . . . .

8-1. Receiver Group

8-2. A8 Input Attenuator Control Signals .. ...... ...... ...... 8-5

8-3. A9J13 Location and Pin Assignments . . . . . . . . . . . . . . . . . . . . 8-7

9-1. Probe Power Connector Voltages ...................... 9-5

10-1. Service Key Menus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-1

10-2. Service Menu .... ...... ...... ...... ...... ... 10-3

10-3. Tests Menu ................................ 10-4

10-4. Test Status on the Display ......................... 10-5

Supply Lines

VD

LED

est

Output

CPU

Connector

an

Troubleshooting

DC-DC

Output

ower

EEPROM

Eight

Connector

OUT

REF

MHz

REF

LO

Outputs

Converter

V

Supply

Control

Revision

Menu

LEDs'

Display

Group

T

est

T

est

CAL

T

est

INT

FRA

C

N

OSC

N

OSC

Test

MHz Signal

Signal

T

est

OSC

Signal

1st

LO

1st

LO

OSC

Typical

estSetup...... .

Simplied Block

LED

Location

Locations

Result

Fuse

V

oltage

REF

Measurement

Block

Group

Location

Label

Display

P

attern

Block

20

Setup

Locations

Setup .

OUT

Signal

Setup

Signal

N

OSC

Signal

Typical

Setup

OSC Signal

T

est

Setup

T

OSC

T

est

Setup

est Setup . . . .

estSetup. ...... ...... ...

, Simplied Block Diagram . . . . . . . . . . . . . . . . . .

.

Locations

Setup

Troubleshooting

Diagram

Simplied

.

Diagram

.

..

.

..

.

Signal

Level

Signal

.

Setup

.

est

Setup

Signal

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

.

..

.

..

.

..

in

T

est

.

at

Center

.

(Single

(Triple

(Single

.

..

.

1

2

3

.

..

.

Frequency

.

Diagram

.

Setup

.

Block

.

..

.

Setup

.

Mode)

.

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

.

Diagram

.

..

.

..

.

0

Hz

.

at

at A4J4

.

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

......

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

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.

Bus

Measurement

.

A4A1J3

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.

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

...... .....

.........

..

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.

. 7-9

..

.

..

.

. 7-20

. 7-21

.

..

5-2

5-4

5-5

5-6

5-8

5-10

5-11

5-13

5-14

5-17

5-19

5-20

5-21

6-2

6-3

6-4

6-5

6-6

6-10

7-2

7-6

7-8

7-10

7-11

7-12

7-13

7-14

7-16

7-17

7-18

7-19

7-22

7-23

7-24

7-26

7-27

7-28

7-29

7-30

7-32

8-2

Contents-12

10-5.

Sample Program

10-6.

External T

10-7.

External T

10-8.

External T

10-9.

External T

10-10.

10-11.

10-12.

10-13.

10-14.

10-15.

10-16.

10-17.

10-18.

10-19.

10-20.

10-21.

10-22.

10-23.

12-10.

12-11.

12-12.

12-13. Rear Assembly P

12-14. Rear Assembly P

12-15. Rear Assembly P

12-16. Rear Assembly P

12-17. Rear Assembly P

12-18. Rear Assembly P

12-19. Rear Assembly P

12-20. Main Frame Assembly P

12-21. Main Frame Assembly Parts 2/19 (A3 Assemblies) .... ...... .... 12-25

12-22. Main Frame Assembly Parts 3/19 .... ...... ..... ...... . 12-26

12-23. Main Frame Assembly Parts 4/19 (A9 Input Multiplexer Assembly) ...... 12-27

12-24. Main Frame Assembly Parts 5/19 (ATT & Angle Assemblies) .... ..... 12-28

12-25. Main Frame Assembly Parts 6/19 (A53 FDD Assembly) . . . . . . . . . . . . 12-29

12-26. Main Frame Assembly Parts 7/19 (A20 Motherboard Assembly) ........ 12-30

12-27. Main Frame Assembly Parts 8/19 (A4 First LO/Receiver RF Assembly) . . . . . 12-31

External T

External

Service

Bus

F

an

DET

1st

LO

FN

VTUNE

FN

INTEG

Correction

IF

Control

Synthesizer

Source

Bootloader

11-1.

Simplied

11-2.

85046A/B

11-3.

P

ower

11-4.

A2

Eight

11-5.

Digital

11-6.

Source

11-7.

Receiver

11-8.

4396B

11-9. 4396B

12-1.

Top

12-2.

Bottom View

12-3.

Angle Assembly

12-4.

Angle Assembly

12-5.

Angle Assembly

12-6.

A

TT

12-7.

A

TT

12-8.

Front

12-9.

Front

est

T

est

Modes

Measurement

P

ower

OUT

,

VTUNE

Control

Analyzer

S-P

Supply

Status

Control

Simplied

Source

Receiver

View

(Major

Assembly

Using

:DIAG:TEST:RES?

Setup

Typical

L

VL

Typical

OUT

Constants

Menu

Control

Menu

arameter

(Major

1

.

2

.

3

.

4

.

5

.

6

.

Menu

CONT

Typical

Menu

Functional

Group

P

.

Menu

Trace

Typical

.

LED

Block

Group

Assemblies)

Parts

arts

P

arts

P

arts

P

arts

P

arts

P

arts

arts 1/7

arts 2/7

arts 3/7

arts 4/7

arts 5/7 ...... ...... ....

arts 6/7 ...... ...... .....

arts 7/7

.

,

and

D

A

C

OUT

Trace

Menu

.

Menu

.

Block

T

..

,

Simplied Block

Block

Assemblies)

1/3

2/3

3/3

1/2

2/2

1/5

2/5

3/5

4/5

5/5

arts 1/19 (A3 Assemblies)

.

Trace

.

est

Group

..

Diagram

.

..

.

..

.

Diagram

Set

.

Diagram

.

..

....

.....

......

...... .

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

.

Simplied

,

Simplied

.

..

.

..

.

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

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

..

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.

..

Typical

Traces

.

..

.

..

.

..

.

..

.

..

.

..

.

Block

.

Diagram .

..

.

..

.

..

.

..

.

..

.

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

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

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.

Diagram

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.

...... ....

.........

...... ..

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

..

.

..

.

..

.

. 10-6

.

10-10

.

10-10

.

10-11

.

10-11

.

10-12

.

10-18

.

10-19

.

10-21

.

10-25

.

10-26

.

10-27

.

10-28

.

10-29

.

10-32

.

10-35

.

10-40

.

10-43

.

10-45

.

11-1

.

11-3

.

11-6

. 11-9

.

11-11

.

11-15

.

11-24

.

11-29

. 11-30

.

12-4

. 12-6

.

12-7

.

12-8

.

12-9

.

12-10

.

12-11

.

12-12

.

12-13

.

12-14

.

12-15

.

12-16

12-17

12-18

12-19

12-20

12-21

12-22

12-23

12-24

Contents-13

12-28.

12-29.

12-30.

12-31.

12-32.

12-33.

12-34.

12-35.

12-36.

12-37.

12-38.

12-39.

A

-1.

B-1.

B-2.

C-1.

Main Frame

Main

Frame

Main

Frame

Main

Frame

Main

Frame

Main

Frame

A9

N

Type

Serial

Number

Connector

Assignment

P

ower

Cable

Assembly P

Assembly

Connector

Plate

Locations

On

Supplied

arts 9/19

P

arts

P

arts

P

arts

P

arts

P

arts

P

arts

P

arts

P

arts

P

arts

P

arts

Replacement

.

On

the

A20

.

(RF

Cable

10/19

(A1

CPU

11/19

(A40

12/19

(A50

13/19

(A51

14/19

(Front

15/19

(A2

P

16/19

(A5

and

17/19

18/19

19/19

.

A20

.

(RF

Cable

(Option

.

..

Motherboard

.

..

Assemblies)

Assembly)

Pre-regulator

DC-DC

GSP

ost

.

Assembly)

Bezel

Regulator

A6

Assemblies)

.

Converter

Assembly)

.

Assemblies)

1D5)

.

..

.

..

.

..

Circuit

..

Side

..

.

Assembly)

.

Assembly)

.

..

.

..

.

Side

.

..

.

..

Assembly)

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.

. 12-32

12-33

. 12-34

.

12-35

12-36

12-37

. 12-38

. 12-39

.

12-40

. 12-41

.

12-42

.

12-43

.

A

-2

. B-2

.

B-3

.

C-3

Contents-14

T

ables

1-1. Recommended

2-1.

Required

4-1.

Functional

5-1. A50

5-2. P

6-1. Troubleshooting

7-1. STEP

7-2.

7-3.

8-1.

8-2.

8-3. A9J13

8-4.

10-1.

10-2.

11-1.

11-2.

11-3.

11-4.

11-5.

12-1.

12-2.

12-3.

12-4.

12-5.

12-6.

12-7.

12-8.

12-9.

12-10.

12-11.

12-12. Front Assembly P

12-13. Front Assembly P

12-14. Front Assembly P

12-15. Rear Assembly P

12-16. Rear Assembly P

12-17.

12-18. Rear

12-19. Rear

12-20. Rear Assembly Parts 6/7 .. ...... ...... ...... ...... 12-22

12-21. Rear Assembly Parts 7/7 .. ...... ...... ...... ...... 12-23

12-22. Main Frame Assembly Parts 1/19 (A3 Assemblies) .... ...... .... 12-24

12-23. Main Frame Assembly Parts 2/19 (A3 Assemblies) .... ...... .... 12-25

12-24. Main Frame Assembly Parts 3/19 .... ...... ..... ...... . 12-26

12-25. Main Frame Assembly Parts 4/19 (A9 Input Multiplexer Assembly) ...... 12-27

12-26. Main Frame Assembly Parts 5/19 (ATT & Angle Assemblies) .... ..... 12-28

P

ower

Supplies

OSC

A3A3

A7

Suspicious

A8

A9

T

Typical

STEP

RF

Stop

Measurement

Gains

Manufacturers

List

T

Bottom

Angle

A

ATT

Front Assembly

Rear Assembly P

Source

Attenuation

Control

Pin Description

Control

est

Status

STEP

OSC

OUT

P

ower

and

of

Abbreviations

op

View

Assembly

TT

Assembly

Assembly P

Test

Binaries

Group

Supplies

on

Information

Frequency

T

est

T

est

Assembly

Signal

T

erms

VTUNE

Frequency

ower

,

A3A3

,

A7

Attenuation,

Setting,

Ranges

Code

(Major

Assemblies)

(Major

P

arts

arts 2/2

Parts

arts 1/7

arts 2/7

arts 3/7

arts 4/7

arts 5/7

Equipment

.

to

Suspect

.

A2

P

ost-Regulator

.

Settings

When

T

est

Settings

..

T

est

Settings

.

V

alues

.

Output,

Used

Settings

List

.

Assemblies)

arts

1/3 .

arts

2/3 .

arts

3/3

1/2

1/5 .

2/5 .

arts 3/5 . . . . . . .

arts 4/5 . . . . . . . .

arts5/5..................

.

..

When

.

for

.

an

.

Filter

.

..

.

..

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

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

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

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

.

ALL

.

and

.

..

.

Internal

.

,

.

..

a

P

erformance

.

Diagnostic

.

EXT

T

est

.

A7

Attenuator

Allowable

and

Sampling

.

..

.

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

T

est

F

ails

.

..

.

..

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est

F

ailure

.

..

.

..

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ails

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Start

P

Mode

.

..

.

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(P

ower Sweep)

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.

..

........

...... ..

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......

.....

. 1-3

.

. 4-4

.

..

.

..

.

. 12-7

.

. 12-8

.

. 12-10

.

..

2-4

5-15

5-18

6-9

7-15

7-31

7-33

8-4

8-6

8-8

10-6

10-27

11-17

11-22

11-26

11-28

12-2

12-3

12-5

12-6

12-9

12-11

12-12

12-13

12-14

12-15

12-16

12-17

12-18

12-19

12-20

12-21

Contents-15

12-27.

12-28.

12-29.

12-30.

12-31.

12-32.

12-33.

12-34.

12-35.

12-36.

12-37.

12-38.

12-39.

12-40.

13-1.

A

-1.

A

-2.

B-1.

C-1.

Main Frame

Main

Frame

Main

Frame

Main

Frame

Main

Frame

Main

Frame

Main

Frame

Main

Frame

A9

N

Type

P

ost

Repair

Manual

Signal

Fuse

Changes

Name

Selection

Assembly P

Assembly

Connector

Procedures

by

Serial

by

Firmware

.

arts 6/19

P

arts

7/19

P

arts

8/19

P

arts

9/19

P

arts

10/19

P

arts

11/19

P

arts

12/19

P

arts

13/19

P

arts

14/19

P

arts

15/19

P

arts

16/19

P

arts

18/19

P

arts

19/19

Replacement

.

Number

V

ersion

.

..

.

(A53

(A20

(A4

(RF

(A1

(A40

(A50

(A51

(Front

(A2

(A5

(RF

(Option

.

..

.

FDD

Assembly)

Motherboard

First

LO/RReceiver

Cable

Assemblies)

CPU

Assembly)

Pre-regulator

DC-DC

GSP

P

ost

and

Cable

.

..

.

Converter

Assembly)

Bezel

Assembly)

Regulator

A6

Assemblies)

1D5)

.

..

.

..

.

..

.

..

.

Assembly)

.

..

.

RF

Assembly)

.

Assembly)

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.

..

. 12-32

..

.

. 12-34

..

. 12-38

. 12-39

.

12-29

12-30

12-31

12-33

12-35

12-36

12-37

12-41

12-42

12-43

13-1

A

-1

A

-1

B-4

C-1

Contents-16

1

General

Information

INTRODUCTION

This

Service

There

04396-90120)

performance

provided

and

repairing the

ORGANIZA

This

manual

section

A

djustments

repair

stored

adjustment

Note

Manual

are

two

in this

consists

describes

or

replacement

into

is a

manuals required

and this

manual. The

testing the

manual. This

analyzer.

TION

of

the

names

and

Correction

the

EEPROM

program

The

analyzer.

manual contains

OF

SERVICE

major

chapters

of

an

assembly

on

the

(PN

04396-18030).

seven,

servicing the

to service

Performance

The other

listed

the

tabs

Constants

.

A1

CPU

gray-tabbed

4396B

the analyzer

information

MANUAL

below

and

the

content

provides

Some

of

.

The correction

chapters

Network/Spectrum/Impedance

,

P

T

est

Manual

.

The

procedures

the

adjustments

are

erformance

provides

required

about

chapters

of

each

constants

the

core

T

est

information

to

servicing

adjusting,

are

divided

chapter

for

.

adjusting

updates

is

updated

troubleshooting

Analyzer

Manual

(PN

about

the

analyzer

troubleshooting,

by

tabs.

This

the

analyzer

correction

by

constants

using

chapters

.

is

after

the

.

Troubleshooting.

analyzer

chapter

analyzer

The

Isolate F

analyzer

fault to

,

and

is

the

independent

Operator's

aulty Group Troubleshooting

functional groups: Source

one of the two functional groups in the analyzer

thus

rst

Check

The

troubleshooting

narrow

of

a

series

of

down

system

is located

strategy

the

cause

of

troubleshooting

peripherals

in this

chapter.

is used after a problem has been shown to be in two

, and Receiver

is

to

of

,

a

and

systematically

problem

procedures

suggests

to

the

.

how

verify

portions

defective assembly

It

checks

to

the operation

remedy

system

. This section suggests how to isolate the

.

of

the

. This

of the

problems

Power Supply Troubleshooting

Digital Control Troubleshooting

Source Troubleshooting

Receiver Troubleshooting

Accessories Troubleshooting

Each of the ve functional group chapters above veries its constituent assemblies until

the faulty assembly is identied.

and calibration kit devices.

Accessories Troubleshooting

veries external RF cables

is the last of the gray-tabbed

troubleshooting chapters.

General Information 1-1

.

Note

The

following

chapters

are

,

for

the

most part,

reference material.

Service

N

SERVICE

the

Theory

functional

R

eplaceable

NN

N

analyzer

K

ey

N

MENU

of

Operation

N

NN

groups

miscellaneous

P

ost-R

epair

adjustments

assembly

.

Appendices

compatible

assignment

Messages

with

list,

contains

Menus

NN

N

documents

. These

.

GPIB

service

,

and

P

arts

provides

chassis

Procedures

and

verication

contains

earlier

and

the power

the

menus let

mnemonics

explains

the

parts

the

operation

part

,

together

contains

numbers

the

procedures

the

manual

shipment

requirement.

service related

functions of

the operator

are

included.

overall

of

operation

each

functional

and

with

ordering

table

of

related service

to

be

changes

information

congurations

error message

the menus

test, verify

of

the

group

illustrations

information.

performed

(required

of

the

analyzer),

list.

accessed from

,

adjust,

analyzer

control,

,

.

of

the

replaceable

procedures.

after

repair or

to

make

the

4

System

and

the

division into

assemblies and

It is

a table

replacement of

this

manual

motherboard

5

,

troubleshoot

of

each

1-2 General Information

TABLE

The

rst

the

analyzer

OF SERVICE

part

specications

recommended

specications

In

addition

T

orx

P

ozidriv

P

ozidriv

IC

extractor

to

screwdriver

Open-end

Hex

socket,

Flat

edge

screwdriver

of

Table

and

perform

of

each

models

.

test

equipment

wrench,

7/32 inch

1-1 lists

item,

may

,

T15

,

1/4 inch

5/16 inch

the

operator's

and

be

substituted

listed

pt

size

pt

size

(5.5 mm)

T

able

TEST EQUIPMENT

all of

the equipment

check. The

the

recommended models

if

the equipment

in T

able 1-1

required to

,the

table also

following

#1 (small)

#2 (medium)

1-1.

Recommended

T

est

verify,

notes the

. Equipment

meets or

tools

Equipment

adjust, and

use and

other than

exceeds the

are

also

required:

troubleshoot

critical

the

critical

Equipment Critical

Computer HP 9000

B

ASIC

Mass

Operating

Storage

System

Revision

3.5

inch

Program 4396B

Frequency

Counter

Frequency

Error:

Frequency

Spectrum

Network

P

ower Meter

P

ower

Sensor

P

ower Sensor

Standard

Analyzer

4

Frequency:

6

1

2

10

Frequency

No

substitute

Frequency

+5

dBm

Frequency

0

60 dBm to

Series 200/300

5.0

or

Microoppy

A

djustments

Range:



6

1.9

10

0

10

/year

Range:

to

0

Range: 50

0

above

2

10

MHz,

20

dBm

20 dBm

0

Specications

2

Disk

Drive

Program

20

7

/year

Time

100

300

20

MHz to

Base

kHz

MHz

(3.5

1

to

1.8

to

1.8

inch)

GHz,

Error:

4

GHz

1.8 GHz

GHz, P

GHz,

Time



P

Function Genarator Frequency Range: 10 Hz to 10 kHz, Level

Accuracy:60.2 dB

Function Genarator Frequency Range: 20

6

0.15 dB

, Return loss:

MHz, Level A

>

20 dB

ccuracy:

Base

ower:

Recommended

Agilent

P

art

Model/

Number

Qty Use

1 A

PN

04396-18030

5343A

Opt.

001

3

1 A

1 P

5061B 1 P

8566A/B 1 P

8753A/B/C 1 P

436A

Opt. 022

, 437B

,or

1 P

438A

8482A 1 P

8481D 1 P

3325A 1 P

3335A 1 A

,

A

,

A,

,A

,

A

,A

1

T

1

P: Performance T

2

Excluding HP 9826A

3

Option 001 (optional time base) is not required, when a frequency standard in Table 1-1 is available.

4

Required for testing an analyzer equipped with Option 1D5 (High Stability Frequency Reference).

ests,A:A

djustments and Correction Constants

, T: Troubleshooting

General Information 1-3

T

able 1-1.

Recommended T

est Equipment

(continued)

Equipment Critical

Signal Generator Frequency Range:

Phase

Noise

at

SSB

Phase

1

Noise

dBc/Hz, Harmonics:

Signal

Generator

Frequency

Range:

Specications

100 kHz

kHz

oset:

at 10

kHz oset:

<

0

30

100

kHz

to 2.14

<

0

dBc

to

1.82

110

<

GHz,

dBc/Hz,

0

GHz

119

SSB

Recommended

Agilent P

8663A or

8663A

or

8642B

art

Model/

Number

Qty Use

1 P,

1 P

Oscilloscope 54600B 1 A

Oscilloscope

Step

Step Attenuator

Probe

Attenuator

1

Attenuator/Switch

Impedance:

Attenuation

VSWR:

1

M

Range:



1.02

Attenuation Range:

VSWR:



1.02

No

substitute

0

dB

0dB

to

70

dB,

Step: 10

to

10

dB

,

Step:

10431A 1 A

dB,

1

dB

,

8496A/G

H60

8494A/G Option

H60

11713A

Option

001

2

3

and

001 and

4

1 P

Driver

50

Type-N

Calibration

No

substitute

85032B 1 P

Kit

T/R

T

est

Sets

Frequency

Directivity:

50

MHz

T

ermination

6

dB

Fixed

6

dB

Fixed

Two-W

ay

Low

P

ass

Attenuation

P

ower

Filter

Splitter

Rejection

50

T

50

,

50

,

Frequency

Tracking:

Cables Type-N

RF

cable

BNC

Range:



at

75

ermination

N(m)-N(f)

N(m)-N(f),

Range:



0.15

cable

,

kit

cable

,

61

cable

,

122

40

MHz:

VSWR

dB

50



cm,

cm, 50

dB

300

100

50





kHz

60



kHz



to

dB

1.015

to

1.8

GHz,

Output

85044A 1 P

PN

0955-0306

909C

85032B

8491A

Opt

5

Opt

012

006

or

part

of

&

Opt

H60

1 P

3 P

2 P

6

2 P

11667A 1 P

7

11500B

or

part

of

11851B

4 P

11851B 1 P

PN

8120-1839

PN

8120-1840

1 P

2 P

GPIB cable 10833A/B/C 3 A

1

A

,

A

,

A,

T

,

A,

T

,

A,

T

,

A

,

A,

T

,

A,

T

1

Calibration

P

erformance T

2

An 8496A/G step attenuator with required low VSWR (

3

An 8494A/G step attenuator with

4

Required when an 8494G or 8496G step attenuator is used in the tests

5

The 85032B includes a type-N(m) 50  termination.

6

An 8491A Opt. 006 xed attenuator with required low VSWR (

7

The 11851B includes three N(m)-N(m) cables of 61 cm and a N(m)-N(m) cable of

values

est Manual

at

50

MHz

are

required

in

the

tests

.

See the

Calibration

.



1.02) can be purchased by

required low VSWR (



1.02) can be purchased by specifying option H60.

.



1.015) can be purchased by specifying Opt. H60.

1-4 General Information

Data

R

equired

for

Step

specifying option H60.

88 cm.

Attenuators

in

T

able 1-1.

Recommended T

est Equipment

(continued)

Equipment Critical

Adapters BNC(f)-BNC(f) adapter

BNC(f)-SMA(f)

T

ee

BNC(m)-(f)-(f)

SMB(m)-SMB(m)

SMC(f)-BNC(f)

SMB(f)-BNC(f)

N(f)-BNC(f)

N(m)-N(m)

N(m)-BNC(f) adapter

N(f)-BNC(m)

adapter

adapter,

adapter

,

50 

,50

,

SMA(m)-BNC(f) adapter

SMA(m)-SMA(f) right

APC3.5(m)-APC3.5(f)

1

The 85032B

includes

APC7.5-N(f)

BNC(f)-SMA(m)

two

APC7.5-N(f)

adapter

adapters

,

Specications

,50



,

50



,

50



,

50



,

50



,

50



50



50



,

50



angle adapter

adapter

,

50



50



50



.

Recommended

Agilent P

art

Model/

Number

Qty Use

1

PN 1250-0080 1 P

PN

1250-0562

PN

1250-0781

PN

1250-0813

PN

1250-0832

PN

1250-1236

PN

1250-1474

PN

1250-1475

PN 1250-1476 1 P,

PN

1250-1477

1 P

1 T

1 A

1 P

,

A

,

A

,A,

A, T

,

A,

T

PN 1250-1548 1 T

,

50



PN 1250-1741 1 A, T

PN

1250-1866

11524A

PN

1250-1548

or

part

of

85032B

1 P

,

1

1 P

1 A

A

General Information 1-5

A

djustments and

Introduction

This

chapter describes

that

the 4396B

adjustments

optimum

operating condition.

performance

are

performed, see

Note

Network/Spectrum/Impedance Analyzer

should be

cannot be

The

and

the A

performed along

achieved after

Chapter 3.

correction

then

operation.

Correction Constants

djustments and

The recommended

constants

recalled

to

rene

Correction

with periodic

the A

djustments and

are

empirically

the

analyzer's

Constants

is within

its specications

maintenance to

calibration period

Correction

derived

data

measurement

procedures

keep

is 12

months

Constants

that

is

and

required

the

analyzer

stored

to

dene

to

.

These

.

If

proper

procedures

in

memory

its

2

ensure

in

Safety

This

safety

adjustments

W

arning

The

accessible

Remember

Considerations

manual

of

contains

the

must

operator

be

Any

analyzer)

instrument

system

removal

by

that

or

opening

hand

the

NOTEs

and

,

to

performed

interruption

or

dangerous

for

any

of

covers

will

expose

capacitors

CA

UTIONs,

keep

by

of

and

the

instrument

qualied

the

protective

disconnection

.

Intentional

reason

circuits

in

the

is

for

adjustment,

containing

analyzer

W

ARNINGs

in

a

service

of

personnel.

the

protective

prohibited.

or

dangerous

can remain

that

safe

ground

interruption

removal

charged

through you have turned the analyzer OFF and unplugged it.

Warning

The adjustments described in this chapter are performed with power

applied and the protective covers removed. Dangerous voltage levels exist

at many points and can result in serious personal injury or death if you

come into contact with them.

must

and

serviceable

conductor

ground

of parts

voltage

be

followed

of

the

other than

levels

for

several

condition.

(inside

terminal

protective

.

minutes

to

ensure

The

or

outside

can

make

ground

those that

,

even

the

are

Adjustments and Correction Constants 2-1

Required Equipment

T

able

1-1

lists

the equipment

procedures

analyzer

are

equal

W

arm-up

W

arm-up

A

djustments

instrument

described

.

If

the

to

,

the

operation.

in

recommended

or

surpasses

for

Adjustments

analyzer

and

Correction

this

for

chapter

those of

at

least

Constants

required to

.

Use only

test

equipment is

the recommended

and Correction

30

minute

procedures

perform the

calibrated test

not available

before

to

Adjustments

equipment when

, equipment

test equipment

Constants

performing

ensure

proper

and the

any of

results

Correction Constants

adjusting the

whose specications

may be

used.

the following

and

correct

Instrument

T

o

gain

access

covers

.

Order

When

in

the

40

520

CAL

Comb

Step

Second

DC

Of

performing

order

MHz

Reference

MHz

OUT

Generator A

Pretune

Local

Oset

0/90Tracking

Band

P

ass

Final

Gain

Source Mixer

RF OUT Level

Spectrum Analyzer Absolute Magnitude

Network Analyzer Absolute Magnitude

Cover

to

the

adjustment

A

djustments

more

than

they

appear

Oscillator

Level

A

djustment

Level

A

djustment

Correction

PLL

Lock

and

Hold

Step

A

djustment

Filters

A

djustments

djustment

Local Leakage A

Correction Constants

Removal

components

one A

in

this

chapter

Frequency

Constants

A

djustment

A

djustments

djustment

djustments

.

The

A

djustment

Correction Constants

,

you

need

or

Correction

procedures

to remove

are

Crystal Filter Correction Constants

IF Gain Errors Correction Constants

Network Analyzer Magnitude Ratio/Phase Correction Constants

10 MHz Reference Oscillator Frequency A

djustment (Option 1D5 Only)

the top

Constants

presented

cover and

procedure

in

the

following

the

,

perform

side

them

order:

2-2 Adjustments and Correction Constants

Updating Correction

This

section

adjustments

A

djustments Program

The

adjustments program

Agilent

provides

program.

part number

general

of

the

is

provided

adjustement

follows:

Constants using

information on

on

how to

one

double-sided

program.

the A

update the

The

les

djustments Program

Correction Constants

diskette

contained

.

Refer

on

to

the

T

able

diskette

using the

1-1

for

are

the

as

ADJ4396B

TE A4396B

Note

Keyboard

The menus

and mouse

Keyboard

1.

Press

2.

Choose

Nimitz

N

NN

If

N

QUIT

3.

press

displays another

Note

A

djustments

Equipment

T

o

prevent

copies

only

for

and

Mouse

in \ADJ4396B"

operations

as

Operation

5

,

4

9

the

highlighted

keys

4

8

Keyboard).

N

NN

N

45

N

or

EXIT

(

4

CONTINUE

N

menu.

Press

4

?

highlighted.

Program

Conguration

accidental

of

the furnished

for

daily use

making

Operation

use

a

follows:

until

your

item

is

displayed

5

,

if

Nimitz

5

to

access

Help

deletion

master diskette

.Keep

working

window

preference

by

pressing

in

a

menu,

Keyboard)

on-screen

information

Program

or

the master

copies.

format.

is

highlighted.

4

RETURN

select

to

help

appears

destruction of

(HFS or

diskettes in

The

window

5

or

4

SELECT

one

of

these

exit.

When

you

information

in

a

display

the program,

SRM system).

a

safe

format

for

5

(

to

exit

the

menu

4

ENTER

exit

menus

selection

window

make working

Use

place

and

supports

5

or

4

EXECUTE

the

menu.

,

the

you

.

the

working

use

them

keyboard

5

,

if

Otherwise

program

have

,

Mouse

Press

the

Operation

4

RETURN

help

5

screen.

or

4

SELECT

5

(

4

ENTER

5

or

4

EXECUTE

5

,

if

Nimitz

1. Slide the mouse up or down until your preference is highlighted.

2. Choose the highlighted item by pressing left-hand button on the mouse

to the right.

NNNNNNNNNNNNNN

3.

If

QUIT

slide the mouse to the left to exit. When you exit menus

or

NNNNNNNNNNNNNN

EXIT

is displayed in a menu, select one

of these to exit the menu. Otherwise

, the program displays

menu.

Note

Press the right-hand mouse button to access on-screen help information for the

selection you have highlighted. Help information appears in a display window.

Press the left-hand mouse button to turn o the help screen.

Adjustments and Correction Constants 2-3

Keyboard)

to

turn

, or slide the mouse

another

o

,

Controller

The

following

Requirement

controller

system

is

required

to

run

the

adjustments

program.

Controller

Mass

Storage

The

controller

language

HP

Excluding

Must

At

HFS

must

extension

9000

Series

have

least

4

least

one

formatted

be

equipped

les

listed

Name V

HP

9826A

inverse

M

bytes

3.5

in T

200/300

video

of

inch

hard

disk

with

able 2-1

T

able

ersion

computer

computers

capability

RAM

GPIB

Flexible Disk

system

HP

B

ASIC versions

.

2-1.

Required

or

SRM

Binaries

Description

Drive

system

between 5.1

GRAPH 5.2 Graphics

GRAPHX 5.2 Graphics

Extensions

IO 5.1 I/O

MA

T

5.1 Matrix

Statements

PDEV 5.0 Program Development

KBD 5.1 Keyboard

Extensions

CLOCK 5.0 Clock

MS 5.1 Mass

ERR 5.1 Error

DISC 5.0 Small

CS80 5.0 CS80

GPIB 5.0 GPIB

FGPIB 5.0 GPIB

CRTB 5.2 Bit-mapped CRT

CRT

A

5.1 Alpha

CRTX 5.1 CRT

EDIT 5.1 List

SRM 5.1 Shared

DCOMM 5.0 Datacomm

HFS 5.3 Hierarchical File

Storage

Message

Disc Driver

Disc

Driver

Interface

CRT

Driver

Extensions

and

Edit

Resource

Interface

Driver

Management

System

COMPLEX 5.1 Complex Arithmetic

are supported.

and 5.13,

Driver

and the

2-4 Adjustments and Correction Constants

Updating

Correction

Constants

Correction

1.

Connect

Constants

the

equipment

are

Figure

updated

as

shown

2-1.

using

in

Updating

the

following

Figure

procedure:

2-1

Correction

Constants

Setup

Steps

2

to

5

are

used

to

select

the

Note

2.

Locate the

the

3.

Set the

where

4.

Load

When

steps

\TE A4396B"

GPIB

Equipment

directly where

mass storage

A4396B"

\TE

and

run

\TE

you

perform

to

select

address

Conguration

the

A

unit

is located.

A4396B".

the

equipment

program

.

djustment

specier

A

djustments

only

Program

(MSUS)

equipment

and

the

when

you

\TE

\ADJ4396B"

to

the

Program

GPIB

want

A4396B"

address

5. Follow the instructions on the controller's screen until the program ends

and

the

rst

address

to

change

in the

will

of

the

to

set

time

.

After that,

the

address

be

run.

drive

their

GPIB

, perform

equipment

or

the

.

addresses

these

perform

of

the

directory

the

or the

drive

6. Set the mass storage unit specier (MSUS) to the address of the drive or the directory

where the A

djustment Program \ADJ4396B" is located.

7. Load and run \ADJ4396B".

8. A window format menu is displayed.

9. Choose \INITIAL SETUP" if you want to

update the Calibrated V

alue for the power sensor

10. Choose the item that you want to perform.

11. Follow the instruction on the controller's screen until the program ends. The equipment

connections are shown in each Correction Constants procedure in this chapter.

.

or

.

Adjustments and Correction Constants 2-5

40 MHz

The

purpose

Reference Oscillator

of

this

procedure is

to adjust

Frequency A

the 40

MHz reference

djustment

oscillator frequency

.

Required

Frequency

BNC

cable

Procedure

1.

Connect the

Equipment

Counter

,

61

cm

:

equipment as

:

::

shown in

:

::

:

::

:

5343A

:

::

:

::

Figure

2-2

.

:

PN

Option

8120-1839

001

2.

Set

the

Input

Frequency

Figure

frequency

Impedance

2-2.

counter

Range

40

50

10

MHz



Hz

Reference

as follows:

-

500 MHz

Oscillator

Frequency

A

djustment

3. Adjust A5 \40 MHz FREQ ADJ" until the frequency counter reading is within

20 MHz

6

2 Hz. The adjustment location is shown in Figure 2-4.

2-6 Adjustments and Correction Constants

Setup

Figure 2-3.

40 MHz

Reference Oscillator

Frequency A

djustment

Location

Adjustments and Correction Constants 2-7

520 MHz

The

purpose

Level A

of

this

procedure is

djustment

to adjust

the 520

MHz output

level.

Required

Spectrum

SMC(f)-BNC(f)

N(m)-BNC(f)

BNC

cable

Procedure

1.

Turn the

2.

Remove the

shown

in Figure

Equipment

Analyzer

:

adapter

,

61

cm

analyzer

\J"

:

OFF

cable

2-4

.

:

.

from

:

::

:

::

:

::

:

8566A/B

:

::

:

::

:

PN

1250-0832

:

::

:

::

:

PN

1250-1476

:

::

:

::

:

::

:

PN

8120-1839

the

A5

\520

MHz

OUT"

connector

.

The

connector

location

is

Figure

3.

Connect the equipment as shown in Figure 2-5.

2-4. 520

MHz Level

2-8 Adjustments and Correction Constants

Adjustment

Location

4.

Set

the

spectrum

Figure 2-5.

analyzer

as

follows:

520 MHz

Level A

djustment Setup

CENTER

SP

AN

RBW

5.

Turn

the

6.

A

djust

level

is

7.

Turn the

8.

Reconnect the

4396B

A5

\520

within

4396B

Frequency

analyzer

MHz LEVEL

0

15

6

0.2

analyzer

\J"

cable

520

MHz

1

MHz

100

kHz

ON.

ADJ" until

dBm.

OFF

.

to

the

The

A5

\520

the

spectrum

adjustment

MHz

OUT"

location

connector

analyzer

is

shown

reading

.

in

for

Figure

520

2-4

MHz

.

signal

Adjustments and Correction Constants 2-9

CAL OUT

The

purpose

Level A

of

this

procedure is

djustment

to adjust

the CAL

OUT level.

Required

P

ower

Meter

P

ower

Sensor

N(f)-BNC(m)

Procedure

1.

Connect the

sensor

.

2.

Connect the

Equipment

:

adapter

:

power sensor

equipment

:

::

:

::

:

as

::

:

to the

shown

:

::

:

::

power

in

:

::

:

Figure

:

meter

:

2-6

:

::

:

.

Calibrate

.

::

:

::

:

::

:

436A

::

:

::

:

8482A

:

::

:

PN

1250-1477

the

power

meter

for

the

power

Figure

3. A

djust A5 \CALIBRA

0

2060.2 dBm . The adjustment location is shown in Figure 2-7.

TOR LEVEL ADJ" until the power meter reading is within

2-6.

CAL

OUT

Level

A

2-10 Adjustments and Correction Constants

djustment

Setup

Figure 2-7.

CAL OUT

Level A

djustment Location

Adjustments and Correction Constants 2-11

Comb Generator

The

purpose

of

this

procedure is

Adjustment

to adjust

the comb

generator output

level.

Required

Spectrum

SMB(f)-BNC(f)

N(m)-BNC(f)

BNC

cable

Procedure

1.

Turn the

2.

Connect the

shown

in Figure

Equipment

Analyzer

:

adapter

,

122

4396B

cm

:

analyzer

:

equipment

2-9

:

as

:

::

OFF

shown

:

::

:

::

:

::

:

::

:

8566A/B

:

::

:

::

:

PN

1250-1236

:

::

:

::

:

PN

1250-1476

::

:

::

:

::

PN

8120-1840

.

in

Figure

2-8

.

A5

\COMB

OUT"

connector

location

is

Figure

2-8.

2-12 Adjustments and Correction Constants

Comb

Generator

A

djustment

Setup

3.

Set

the

Start

Stop

RBW

Reference

Scale

4.

Turn

the

5.

Adjust

requirements:

spectrum

Frequency

Level

4396B

A5

\COMB

Figure 2-9.

analyzer

400

1

GHz

1

MHz

0

5

dB/div

analyzer

DC

BIAS

20

as

MHz

dBm

ON.

ADJ"

Comb Generator

follows:

until

the

spectrum

Adjustment

analyzer

Location

display

meets

the

following

720 MHz

480 MHz

480

Signal Level

to 920

MHz

to

MHz Flatness

920

MHz

The adjustment location

shown in Figure

2-10.

Signal

Level

between

<

8

>

0

dB

51

0

dBm

46

and

0

37

dBm

is shown in Figure 2-9. The typical spectrum analyzer display is

Adjustments and Correction Constants 2-13

Figure 2-10.

Comb Generator

Output

2-14 Adjustments and Correction Constants

Step Pretune

The

the

purpose

step

loop

of

this

oscillator

Correction Constants

procedure is

to generate

the correction

.

constants that

are used

to pretune

Required

None

Procedure

1.

Run the

Constants

2.

Choose the

3.

F

ollow

the

Equipment

adjustment program

using the

Step Pretune

adjustment

Adjustments

Correction

program

and

display

Program

Constants

instructions

the

").

main

.

to

menu

update

(see

the

correction

\Updating

constants

Correction

.

Adjustments and Correction Constants 2-15

Second Local

The

purpose

of

this

PLL Lock

procedure is

Adjustment

to lock

the second

local Phase

Lock Loop

(PLL).

Required

Equipment

Spectrum Analyzer

BNC(f)-SMA(m) adapter

N(m)-BNC(f)

BNC

cable

adapter

,

122

cm

Procedure

1.

Turn

the

4396B analyzer

2.

Remove the

A3A2

\Second Local

\D" cable

:

::

OFF.

from the

Out" connector

:

::

A3A1

::

:

::

:

.The

::

:

::

:

\ALC

::

:

::

:

Out"

connector

:

::

locations

:

::

:

::

:

::

:

.

Remove

are

::

:

::

:

::

:

::

:

::

:

the

shown

:

::

:

8566A/B

:

PN

1250-1548

:

PN

1250-1476

:

::

PN 8120-1840

\I"

cable

from

the

in

Figure

2-11

.

Figure 2-11.

Second Local

3. Connect the equipment as shown in Figure 2-12.

2-16 Adjustments and Correction Constants

PLL

A

djustment

Location

4.

Set

the

spectrum

Figure 2-12.

analyzer

as

follows:

Second Local

PLL A

djustment Setup

Center

Span

RBW

5.

Turn

6.

Press

4

PRESET

7.

A

djust

display

rotate

counterclockwise

8.

Turn

9. Reconnect the \I" cable to

the

4396B

the

following

5

,

4

SYSTEM

A3A2

and

\Second

the

analyzer

Frequency

analyzer

N

5

,

\Second

the

4396B

Local

.

The

OFF

2.08

400

1

MHz

ON.

keys

to execute

N

NN

N

SERVICE

Local

analyzer

A

dj"

adjustment

.

GHz

MHz

N

NN

MENU

A

dj"

reading

clockwise

the A3A2 \Second Local Out" connector

cable to the A3A1 \ALC Out" connector

adjust test

N

NN

N

TESTS

,

until

2.08

.

If

location

NN

N

,

4

GHz

is

between

1.92 GHz

is

.

No

.44:

5

,

4

appears

appears,

shown

N

EXECUTE

5

,

4

x1

constantly

the limit

in

Figure 2-11

N

NN

N

NN

TEST

on

lines.

If 2.24

rotate \Second

.

. Reconnect the \D"

N

the

GHz

Local A

spectrum

appears

dj"

analyzer

,

Adjustments and Correction Constants 2-17

DC Oset

The

purpose

output.

and Hold

of

this

procedure is

Step A

to minimize

djustment

the hold

step and

DC oset

of the

sample hold

Required

Oscilloscope

10:1

Divider

Procedure

1.

Turn the

2.

To

gain

side

.

3.

Pull

the

upward.

4.

Remove

5.

Pull

the plugs

going

to

Equipment

:

Probe

,

1

analyzer

access

A6

board

the

to

shield

OFF

the

out.

case

that block



do the

/90tracking

0

:

::

M

:

.

adjustment

Place

from

the \DC

:

::

components

the

board

the

board.

OFFSET ADJ"

adjustment,

:

::

:

::

:

54600B

:

::

:

::

:

10431A

,

on

remove

the

analyzer

pull the

holes

other two

the

out

side

with

(see

panel

the

component

Figure

plugs out.

on

2-13

the

control

side

).

If

facing

you

keys

are

also

Figure 2-13. Plug Locations

6. Replace the shield case on the A6 board. Replace the A6 board into

the slot.

7. Connect the equipment as shown in Figure 2-14 to monitor the sample hold output signal.

Test pins locations are shown in Figure 2-15 .

2-18 Adjustments and Correction Constants

Figure 2-14.

DC Oset

and Hold

Step A

djustment

Setup

Figure 2-15. DC Oset

8. Set the oscilloscope as follows:

INPUT

TIMBASE

9. Turn the analyzer ON.

10. Press the following keys to execute adjust test No.41:

Range: 400 mV

Coupling: DC, 1 M

Range: 50S

and Hold Step A

djustment Locations

Adjustments and Correction Constants 2-19

4

PRESET

11. A

is within

Figure 2-15

Note

5

djust \0

,

4

SYSTEM

deg DC

0

6

25 mV

.

If

the

oscilloscope

N

NN

SERVICE

5

,

NN

OFFSET ADJ"

as shown

waveform

range

N

NN

N

MENU

until the

in Figure

doesn't

setting

N

TESTS

,

appear

to

N

NN

N

,

5

,

4

1

4

,

4

x1

N

EXECUTE

5

,

oscilloscope waveform's

2-16.

The

adjustment

on

the

oscilloscope

4

V

to

adjust

coarsely

N

NN

location

display

.

N

TEST

longer

N

NN

N

step

is

shown

,

change

voltage

in

the

12.

A

djust

shorter

shown

\0

step

in

deg

HOLD

is

Figure

smaller

2-15

Figure

STEP

than

.

2-16.

ADJ"

50

mV

DC

until

,

as

Oset

the

voltage

shown

A

djustment

dierence

in

Figure

2-17

W

aveform

between

.

The

the

longer

adjustment

step and

location

is

2-20 Adjustments and Correction Constants

13.

Press

14.

A

djust

adjustments

15.

Press

Note

16.

Turn

17.

Pull

upward.

N

CONT

to

\90

deg

.

N

CONT

to

Steps

going

the analyzer

the A6

board out.

proceed

HOLD

nish

the

16

to

do

OFF.

Figure 2-17.

to

the

adjustments

STEP

ADJ"

adjustment.

19

replace



/90tracking

the

0

Place the

Hold Step

and

\90

the

plugs

board on

Adjustment



into

90

DC

the \DC

.

OFFSET

for

deg

adjustment,

the

analyzer

Waveform

ADJ"

OFFSET

skip

these

with

the

component

same

ADJ"

steps

holes

.

as

the

.

side

If

you

facing

0

deg

are

18. Replace

the plugs

into the

\DC

OFFSET

ADJ"

holes

see

Figure

2-18

.

Adjustments and Correction Constants 2-21

19.

Replace

the

A6

board

into

Figure 2-18.

the slot.

Plug Locations

2-22 Adjustments and Correction Constants

0/90Tracking A

The

purpose

measurement

of

this

circuit

procedure is

and

Required Equipment

djustment

to minimize



measurement

90

the dierence

circuit.

between the

third IF



0

N(m)-BNC(f)

BNC

cable

Procedure

1.

Turn

the

2.

T

o

gain

side

.

Note

3.

Pull

the

upward.

4.

Remove

5.

Pull

the

adapter

,

61

analyzer

access

Steps

plugs

A6

board

the

shield

plugs

cm

to

that

:

::

OFF

the

adjustment

3

to

are

out.

case

block

:

::

:

.

6

pull the

already

Place

from

the

::

:

out,

the

\TRA

::

:

components

plugs that

skip

these

board

on

board.

CKING

ADJ"

:

::

:

::

:

,

remove

block

the

steps.

the analyzer

holes

::

:

the

\TRA

with the

(see

:

side

CKING

Figure

:

::

panel

on

ADJ"

component side

2-19

).

:

::

the

:

::

PN 1250-1476

:

PN

control

holes

out.

8120-1839

keys

If

these

facing

Figure 2-19. Plug Locations

6. Replace the shield case on the A6 board. Replace the A6 board into the slot.

7. Turn the analyzer ON.

8. Connect the equipment as shown in Figure 2-20

Adjustments and Correction Constants 2-23

9.

10.

Press

4

PRESET

A

djust

reading

shows

the

following

5

,

4

SYSTEM

\PHASE"

of

magnitude

the

adjustments

Figure 2-20.

keys

N

NN

N

SERVICE

5

,

and

\GAIN"

is

smaller

limit.)

0

to

execute adjust

N

NN

N

MENU

,

of

\0/90

than

A

djustment



/90Tracking A

N

NN

TESTS

deg

0.1

test No

NN

N

,

TRA

U

.

5

4

(The

.42:

5

,

4

2

CKING

smallest

locations

djustment Setup

N

NN

N

EXECUTE

5

,

4

x1

ADJ"

until

circle

are

shown

in

N

TEST

the

of the

Figure

N

NN

N

analyzer's

analyzer

2-21

marker

display

.

Figure 2-21. 0/90Tracking Adjustment Locations

Press

NNNNNNNNNNNNNN

CONT

to nish the adjustment.

11.

2-24 Adjustments and Correction Constants

12.

Turn the

13.

Pull the

upward.

14.

Replace the

\DC

analyzer OFF

A6 board

plugs into

OFFSET ADJ"

.

out. Place

the \TRA

are out,

the

board

CKING

replace the

on

the

ADJ"

plugs

analyzer

holes

.

(see

with

Figure

the

component

2-22

side

facing

).

If

the

plugs

for

the

15.

Replace

the

A6

board

into

the

Figure

slot.

2-22.

Plug

Locations

Adjustments and Correction Constants 2-25

Band P

The

purpose

ass Filters

of

this

procedure is

Adjustments

to optimize

the 1

MHz and

3MHz

Band P

ass Filters

.

Required

N(m)-BNC(f)

BNC

cable

Procedure

3

MHz

Band

1.

Turn

the

2.

T

o

gain

side

.

3.

Connect

Equipment

adapter

,

61

cm

:

P

ass

Filter

analyzer

access

the

OFF

to

the

equipment

:

::

A

djustment

.

adjustment

as

shown

:

::

:

::

:

components

in

Figure

:

2-23

:

,

remove

:

::

:

PN

1250-1476

::

:

::

:

PN

8120-1839

the

side panel

on the

control keys

Figure 2-23. Band P

4. Turn the analyzer

ON.

5. Press the following keys

NNNNNNNNNN

SERVICE MENU

5

4

PRESET

6. A

djust \BW"s of

5

,

4

SYSTEM

,

\3 MHz BPF ADJ" until the analyzer measurement trace is within the

to execute adjust test No

NNNNNNNNNNNNNNNNNNNNNNNNN

NNN

ass Filters A

NNNNNNNNNN

NNNNNNN

TESTS

,

djustments Setup

.46:

NNNNNNNNNN

,

4

x1

6

NNNNNNNNNNNNNNNNNNNNNNNNN

EXECUTE TEST

5

,

5

,

5

,

NNN

limits and \PASS" is displayed. The adjustment locations are shown in Figure 2-24.

2-26 Adjustments and Correction Constants

7.

8.

Press

A

djust

width)

N

CONT

\BW"s

and

N

to

marker

Figure 2-24.

continue

of

the

\3

frequency

the

MHz

3

BPF

MHz

meet

Band P

band

ADJ"

the

ass Filters

pass

lter

until

the

following

Adjustment

adjustment.

analyzer

readings

requirements

Locations

of

\BW"

and

\P

ASS"

(

0

3

dB band

is displayed.

BW

Marker

9.

Press

10.

A

djust

between

Figure

11.

Press

1

MHz

BPF

12. Press the

4

PRESET

13. A

djust \BW"s of \1 MHz BPF ADJ" until the analyzer measurement trace is within the

limits and \P

14.

Press

Frequency

N

NN

N

CONT

to

continue

\GAIN"

0

2-24

N

NN

N

CONT

1

6

.

N

to

Band

of

0.1

nish

Width A

following keys to execute adjust test No

5,4

SYSTEM

ASS" is displayed. The adjustment locations are shown in

NNNNNNN

CONT

to continue the 1 MHz band pass lter adjustment.

3

MHz

20

MHz

the

\3

MHz

BPF

dBm

and

the

3

MHz

djustment

NNNNNNN

NNNNNNNNNNNNNNNNNNNNNNNNN

SERVICE MENU

5

,

6

0.27

6

0.18

3

MHz band

ADJ"

\P

ASS"

band

NNNNNN

MHz

until

is

displayed.

pass

NNNNNNN

NNNNNNNNNN

TESTS,4

,

pass lter

the

analyzer

lter

adjustment.

5,4

4

adjustment.

reading

The

adjustment

.47:

NNNNNNN

5

,

5,4

x1

7

of

marker

location

NNNNNNNNNNNNNNNNNNNNNNNNN

NNNNNN

EXECUTE TEST

magnitude

is

shown

Figure 2-24.

is

in

15. Adjust \BW"s of the \1 MHz BPF ADJ" until the analyzer readings of \BW" (03dBband

width) and marker frequency meet the following requirements and \PASS" is displayed.

BW 1 MHz60.12 MHz

Marker Frequency 20 MHz60.06 MHz

Adjustments and Correction Constants 2-27

16.

17.

18.

N

NN

N

CONT

Press

Adjust

between

Figure

NN

CONT

Press

NN

to continue

\GAIN" of

0

1

6

0.1

2-24.

NN

N

to

nish the

the 1

\1 MHz

dBm and

MHz band

BPF

\P

1MHz

ADJ"

until

ASS"

is

band pass

pass lter

the

analyzer

displayed.

lter

adjustment.

reading

The

adjustment

adjustment.

of

marker

location

magnitude

is

shown

is

in

2-28 Adjustments and Correction Constants

Final Gain

The

purpose

of

Adjustment

this

procedure is

to adjust

the total

gain of

the receiver

.

Required

Signal

BNC

Generator

cable

N(m)-BNC(f)

Procedure

1.

Connect the

Equipment

:

,

61

cm

(2

required)

adapter

:

equipment as

:

::

:

shown in

::

:

::

:

::

:

3335A

:

::

:

::

:

PN

8120-1839

:

::

:

::

:

PN

1250-1476

Figure

2-25

.

2.

Press

4

PRESET

the

5

,

following

4

SYSTEM

keys

NN

N

SERVICE

5

,

Figure

N

to

NN

execute

NN

N

MENU

2-25.

N

adjust

NN

N

,

Final

N

TESTS

N

NN

test

NN

,

Gain

No

5

,

4

A

djustment

.43:

5

,

4

3

3. Set the signal generator as follows:

Frequency

Amplitude

4. A

djust \FINAL GAIN ADJ" until the analyzer reading is

20 MHz

0dBm

displayed. The adjustment location is shown in Figure 2-26.

Setup

NN

N

NN

N

x1

5

,

EXECUTE

N

TEST

between the limit lines and P

Adjustments and Correction Constants 2-29

ASS is

Figure 2-26.

Final Gain

Adjustment

Location

2-30 Adjustments and Correction Constants

Source Mixer

The

purpose

of

this

Local Leakage

procedure is

to minimize

Adjustment

the source

mixer local

leakage.

Required

Signal

N(m)-BNC(f)

BNC(f)-SMA(m)

T

SMA(m)-SMA(f)

BNC

Type-N

Procedure

1.

2.

Generator

ee

BNC(m)-(f)-(f)

cable

Cable

Turn

the

Remove

shown

the

in

Equipment

1

:

2

:

adapter

,

61

cm

,

122

,

61

analyzer

\C"

Figure 2-27

adapter

right

angle

:

cm

(2

cm

(2

OFF

cable

.

:

required)

:

adapter

:

::

required)

.

from

the

:

::

:

::

:

::

:

::

:

::

:

::

:

::

:

::

:

::

:

::

A3A3

::

:

::

:

::

:

::

rst

:

::

:

::

:

8642B

:

::

:

::

:

8663A

:

::

:

PN

1250-1476

:

::

:

PN

1250-1548

:

::

:

PN

1250-0781

:

::

:

::

:

PN

1250-1741

:

::

:

::

PN

8120-1839

:

::

:

PN

8120-1840

::

:

::

:

local

input connector

11500B

. The

or

part

of

11851B

connector location

is

Figure 2-27. Second Local Leakage A

3. Connect the equipment as shown in Figure 2-28.

djustment Location

Adjustments and Correction Constants 2-31

Figure

2-28.

Second

Local

Leakage

A

djustment

Setup

4. Turn

5.

6.

7. A

8. Reconnect the

the analyzer

Press

4

PRESET

Set

the

Frequency

Amplitude

the

following

5

,

4

SYSTEM

signal generators

ON.

keys

to

NN

N

SERVICE MENU

5

,

Signal

Generator

Setting

100

0 dBm

execute

N

NN

N

as follows:

MHz

adjust

NN

N

TESTS

,

1

NN

N

Signal

test

No

N

,

5

,

4

Generator

Setting

2.18

GHz

0

4 dBm

.45:

5

NN

N

NN

N

,

EXECUTE TEST

5

,

4

x1

N

2

djust second local leakage adjustments until the analyzer's marker reading of magnitude

is

smaller than 5 mU and \P

shows the

adjustments limit.) The adjustment locations are shown in Figure 2-27.

\C" cable to the A3A3 rst local input connector

ASS" is displayed. (The smallest circle of the analyzer display

.

2-32 Adjustments and Correction Constants

RF OUT

The

purpose

signal

linearity

Level Correction

of

this

procedure is

and

atness

to obtain

.

Constants

the correction

constants that

correct the

RF OUT

Required

P

ower

Meter

P

ower

Sensor

Procedure

1.

Run

the

Constants

2.

3.

Choose

F

ollow

shows

the

Equipment

:

adjustment

using

the

RF

OUT

adjustment

equipment

:

::

:

::

program

A

djustments

Level

Correction

program

setup

::

:

and

display

Program

instructions

for

the

:

the

").

Constants

Correction

:

::

main

to

update

Constants

.

:

::

:

menu

:

(see

the

correction

.

:

\Updating

:

::

:

::

Correction

constants

::

:

::

:

.

Figure

:

436A

:

8482A

2-29

Figure 2-29. RF OUT Level Correction Constants Setup

Adjustments and Correction Constants 2-33

Spectrum Analyzer

The

purpose

analyzer

of

absolute

this

procedure is

magnitude

Absolute Magnitude

to obtain

measurement.

the correction

Correction Constants

constants that

correct the

spectrum

Required

Signal

P

Two-W

N(m)-N(m)

Type-N

Procedure

1.

2.

3.

Generator

ower

Meter

ower

Sensor

ay

Cable

Run

the

Constants

Choose

F

ollow the

shows

the

Equipment

:

::

:

::

P

ower

Splitter

adapter

,

adjustment

using

SA

adjustment program

equipment setup

:

61

cm

the

Adjustments

Absolute

:

program

:

::

:

::

:

::

:

::

:

::

and

Magnitude

instructions to

for the

::

:

::

:

::

:

::

:

::

:

display

Program

the

main

").

Correction

Correction Constants

Constants

update the

:

::

:

::

:

::

menu

:

::

:

::

(see

.

::

:

::

:

::

:

\Updating

correction

:

::

:

::

:

11500B

constants

:

::

:

::

:

::

or

Correction

::

:

::

:

PN

part

.

Figure

:

::

:

8663A

:

::

:

11667A

1250-1475

of

11851B

:

436A

8482A

2-30

Figure 2-30. Spectrum Analyzer

2-34 Adjustments and Correction Constants

Absolute Magnitude Correction Constants Setup

Network Analyzer

The

purpose

analyzer

of

absolute

this

procedure is

magnitude

Absolute Magnitude

to obtain

measurement.

the correction

Correction Constants

constants that

correct the

network

Required

Signal

P

Two-W

N(m)-N(m)

Type-N

Procedure

1.

2.

3.

Generator

ower

Meter

ower

Sensor

ay

Cable

Run

the

Constants

Choose

F

ollow the

shows

the

Equipment

:

::

:

::

P

ower

Splitter

adapter

,

adjustment

using

NA

adjustment program

equipment setup

:

61

cm

the

Absolute

:

program

Adjustments

:

::

:

::

:

::

:

::

:

::

and

Magnitude

instructions to

for the

::

:

::

:

::

:

::

:

::

:

display

Program

the

main

").

Correction

Correction Constants

Constants

update the

:

::

:

::

menu

:

::

:

::

:

::

:

::

:

::

:

(see

\Updating

.

correction

.

:

11500B

:

::

:

::

:

or

Correction

constants

:

::

:

::

:

::

:

PN

part

.

Figure

:

::

:

8663A

:

8482A

::

:

11667A

1250-1475

of

11851B

:

436A

2-31

Figure 2-31. Network Analyzer

Absolute Magnitude Correction Constants Setup

Adjustments and Correction Constants 2-35

Crystal Filter

The

purpose

frequency

of

this

response

Correction Constants

procedure is

to obtain

the correction

.

constants that

correct the

crystal lter

Required

Signal

Type-N

Generator

Cable

Procedure

1.

Run the

Constants

2.

Choose the

3.

F

ollow

the

shows

the

Equipment

:

,

61

cm

adjustment

using the

Crystal

Filter

adjustment

equipment

:

program

A

djustments

Correction

program

setup

::

:

::

and

instructions

for

the

:

display

Program

Constants

Correction

:

the

").

:

to

:

main

:

::

:

::

menu

.

update

Constants

::

the

::

.

:

(see

:

\Updating

correction

:

11500B

constants

:

::

:

or

part

Correction

.

Figure

:

of

11851B

8663A

2-32

Figure 2-32. Crystal Filter Correction Constants Setup

2-36 Adjustments and Correction Constants

IF Gain

The

purpose

changing

Errors Correction

of

this

procedure is

errors

for

network

analysis

Constants

to obtain

and

the correction

constants that

spectrum analysis

correct the

IF gain

.

Required

Signal

Type-N

Generator

Cable

Procedure

1.

Run the

Constants

2.

Choose the

3.

F

ollow

the

and

Figure

Equipment

:

,

61

cm

:

adjustment program

using the

IF

adjustment

2-34

Gain

Errors

show the

A

djustments

Correction

program

equipment

:

::

:

::

:

and display

Program

instructions

:

the

").

Constants

setups

:

to

for

:

main

:

menu

.

update

the

:

::

:

::

:

(see

the

correction

Correction

:

\Updating

Constants

:

11500B

constants

:

or

Correction

.

::

part

.

Figure

::

of

:

8663A

11851B

2-33

Figure 2-33. IF Gain Errors Correction Constants Setup 1

Adjustments and Correction Constants 2-37

Figure 2-34.

IF Gain

Errors Correction

Constants Setup

2

2-38 Adjustments and Correction Constants

Network Analyzer

The

purpose

analyzer

of

this

magnitude

procedure is

ratio

and

Magnitude Ratio/Phase

to obtain

phase

measurement

the correction

for A/R

constants that

and B/R.

Correction Constants

correct the

network

Required

Two-W

ay

N(m)-N(m)

Type-N

Cable

Procedure

1.

Run the

Constants

2.

Choose the

3.

F

ollow

the adjustment

Figure

2-35

measurements

correct

the

Equipment

P

ower

Splitter

adapter

,

61

cm

:

(2

:

required)

adjustment program

using the

NA

Adjustments

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Ratio/Phase

program

and

Figure

are

done

2-36

for

dierence between

:

::

:

and display

Program").

instructions

show

the

each

of

the power

::

:

::

the

Correction

equipment

A/R

and

:

::

:

main

menu

Constants

to

update

setups

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changing

splitter arms

:

::

:

the

.

:

::

:

(see

for

:

::

:

::

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.

correction

the

Correction

the power

:

::

:

11500B

or

Correction

constants

Constants

splitter connection,

:

PN

part

.

:

::

:

11667A

1250-1475

of

11851B

.

Two

to

Figure 2-35. Network Analyzer Magnitude Ratio/Phase Correction Constants Setup 1

Adjustments and Correction Constants 2-39

Figure 2-36.

Network Analyzer

Magnitude Ratio/Phase

Correction Constants

Setup

2

2-40 Adjustments and Correction Constants

10 MHz

1D5

The

1D5)

Only)

purpose of

frequency.

Reference Oscillator

this procedure

is to

adjust the

Frequency A

10 MHz

high

stability

djustment (Option

reference

oscillator

(Option

Required

Frequency

APC3.5(m)-APC3.5(f)

BNC(f)-SMA(f)

N(m)-BNC(f)

BNC

Procedure

1. Turn

2. Pull

A60 location

Equipment

Counter

Standard

cable

,

61

the

analyzer

the

A60

adapter

cm

assembly

is shown

:

adapter

:

(3

required)

OFF

:

::

.

out.

in

:

::

:

::

:

::

Place

Figure

:

::

:

::

:

::

:

::

:

::

2-37

:

::

:

::

:

::

:

5343A

:

::

:

::

:

5061B

:

::

:

::

:

PN

1250-1866

::

:

::

:

::

PN 1250-0562

:

::

:

::

PN

1250-1476

::

:

::

:

::

:

PN

8120-1839

it

on

the

analyzer

.

with

the

bracket

facing

upward.

The

Figure 2-37. 10 MHz Reference Oscillator Frequency A

Note

3. Allow the analyzer to remain ON continuously for at least 24 hours to ensure that both the

temperature and frequency of A60 can stabilize.

4. Connect the equipment as shown in Figure 2-38.

The analyzer must be ON continuously for at least 24 hours immediately prior

to the oscillator adjustment. This warm-up time allows both the temperature

and frequency of the oscillator to stabilize

stabilization time could result in oscillator misadjustment.

.F

ailure

Adjustments and Correction Constants 2-41

djustment Location

to allow sucient

Figure

2-38.

10

MHz

Reference

Oscillator

Frequency

A

djustment

Setup

5. Press

6.

Set

the

5

Preset

to

4

Control

Analyzer

Center

Frequency

Source

frequency

initialize the

Settings

Type:

Network

Frequency:

Span:

P

ower:

0

counter

analyzer

1.8

0

Hz

20 dBm

as

follows:

GHz

.

Then

K

4

ey

Meas

Center

Span

Source

set

the

analyzer

Strokes

N

NN

N

ANALYZER TYPE

5

,

5

,

4

1

N

ZERO

5

,

N

POWER

5

,

N

5

,

4

.

8

N

NN

SPAN

N

NN

N

,

N

5

4

N

,

NN

0

NN

4

G/n

N

5

controls

N

5

N

5

,

4

2

N

,

4

as

N

NN

N

NETWORK ANALYZER

5

,

4

x1

0

follows:

N

NN

N

Input Impedance 50 

Frequency Range 500 MHz - 26.5 GHz

7. Remove the dust cap screw on the A60 assembly to gain

8. A

djust the A60 adjustment screw until the frequency counter reading is

1.8 GHz

6

1Hz

.

access to the adjustment screw

within

9. Turn the analyzer OFF.

10. Replace the dust cap screw into the A60 assembly, and replace the A60 assembly into the

slot.

.

2-42 Adjustments and Correction Constants

Troubleshooting

INTRODUCTION

This

chapter describes

determine

whether the

troubleshooting

of this

overall troubleshooting

analyzer is

manual.

faulty,

summary and

or not.

The

provides

procedure

the

is

performed

procedure

rst

in

3

to

the

TROUBLESHOOTING

The

troubleshooting

approach.

of

accessories

splitters

keyboards

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refers

digital

the

Theory

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of

two

the

faulty

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,

cables

,

chapter

the

technician

control,

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aulty

functional

group

for

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identies

of

Operation

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procedures

Figure 3-1

Each of

time,

employ

.

diagrams the

the ve

the assemblies

more

lengthy

Post-Repair Procedures

strategy

chapter's

or

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and

instance

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calibration

,

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one

to

the

source

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groups:

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and

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troubleshooting

chapters following

within a

,

complicated

, is the last chapter of the troubleshooting portion of the manual.

is organized by assembly and notes what adjustment to perform and

SUMMARY

of

this

step

kits

which

remedies

or

some

appropriate

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source

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technician to

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aulty Group

group until

procedures

manual

is

to

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ccessories

.

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eripherals

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how to verify proper instrument operation following the replacement of an assembly

, power

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Troubleshooting 3-1

Figure

3-1.

Troubleshooting

Organization

3-2 Troubleshooting

START

A

system

analyzer

perform

1.

Disconnect

power

2.

P

erform

3.

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erform

4.

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erform

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a

the

,

and

the

analyzer has

measurements

interconnect

problems

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can

be caused

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following

everything

RF

cables.

INSPECT

OPERA

INSPECT

or

programming).

procedure

from

THE

TOR's

THE

passed all

or

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cables

, calibration

by a

problem in

.

the

analyzer:

POWER

CHECK

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of the

ON SEQUENCE

in

this chapter

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checks in

, suspect

and verication

the analyzer

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verify the

All

test

TURE

steps

the accessories

kit devices

and its

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set interconnect,

in this

chapter

.

in

this chapter

2

through

4

but

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,test

set

accessories or

the analyzer

GPIB cable

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it

still

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or a

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audible.

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with the

for

the

analyzer

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the fan

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with

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annotation

chapter

on the

power to

rear panel.

the analyzer

or

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events

displays

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.

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listed

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Control

message

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this

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the

line

order:

est

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should

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voltage

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the

.

for

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panel,

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one

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commands

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self

tests

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an

other

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message

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,

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continue

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.

3-4 Troubleshooting

OPERATOR'S

The

Operator's

This

is

an

When

you

accordance

continue

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est Equipment

with

Check

excellent

want

to

with

the

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erformance

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Faulty

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some of

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performance test

the performance

properly.

tests

fail,

in

Two-W

50

Type-N

BNC

N(m)-N(m)

N(m)-BNC(f)

Procedure

1.

2.

3.

4.

ay

T

ermination

Cable

cable

Turn

the

Press

4

PRESET

Press

4

SYSTEM

\TEST

The connection

Figure 3-2

53

P

ower

,

61

,

30

cm

adapter

analyzer

5

ALL

.

Then

Splitter

(two

required)

cm

(two

:

::

:

power

to

initialize the

N

SERVICE

5

,

EXT

1"

instruction

press

:

::

:

N

appears

N

CONT

:

::

:

required)

::

:

::

:

::

on.

analyzer.

NN

N

MENU

is

displayed

N

NN

N

.

::

:

::

N

TESTS

,

on

:

N

::

:

N

the

:

N

:

N

:

::

:

N

LCD

:

N

:

::

:

,

on

:

::

:

::

:

11667A

::

:

909C

Opt 012

::

:

::

:

11500B

:

::

:

::

:

::

:

::

:

5

4

3

,

4

x1

LCD

5

to

access

N

NN

EXECUTE

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Connect

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N

TEST

N

the

ALL

N

.

equipment

4

5

,

press

the

::

:

::

:

EXT

::

:

::

:

::

or part

:

PN

::

:

PN

::

:

PN

1

test.

as

shown

of 85032B

of 11851B

8120-1838

1250-1475

1250-1476

When

in

Figure 3-2. ALL EXT 1 Test Setup

5. Wait until the analyzer displays the test result. The analyzer displays the test results,PASS

or FAIL, as shown in Figure 3-3 .

Troubleshooting 3-5

If the

ALL EXT

1 test

fails

,

continue

with

step

18.

6.

7.

Press

At

5

4

to

access

*

the prompt,

Figure

the

connect

ALL

the

3-3.

Displayed

EXT

2

test.

equipment

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as

Result

press

shown

of ALL

N

EXECUTE

in

Figure

EXT T

N

NN

N

3-4

N

TEST

.

Then

est

N

to

execute

press

N

NN

N

CONT

the

N

test.

N

.

Figure 3-4. ALL EXT 2 T

8. W

ait until

If the ALL EXT 2 test fails

9.

Press

10.

At the prompt, connect the equipment as shown in Figure 3-5. Then press

the analyzer displays P

ASS or F

AIL.

, continue with step 18.

4*5

to access the ALL EXT 3 test. Then press

est Setup

N

NNNNNNNNNNNNNNNNNNNNNNNNN

NNNNNNNNNNNN

EXECUTE TEST

3-6 Troubleshooting

to execute the test.

NNNNNNNNNNNNNN

CONT

.

11.

12.

13.

W

ait

If the

Press

At the

until

ALL

5

4

to

*

prompt,

the

access

analyzer

EXT

3

the

connect

displays P

test

fails

ALL

the

Figure 3-5.

ASS or

,

continue

EXT

4

test.

equipment

ALL EXT

F

AIL.

with

step

Then

press

as

shown

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18.

N

EXECUTE

in

Figure

est Setup

N

NN

N

3-6

N

TEST

.

Then

N

.

N

NN

N

CONT

press

.

Figure 3-6. ALL EXT 4 Test Setup

14. Wait until the analyzer displays PASS or FAIL.

Troubleshooting 3-7

15.

16.

If the

Press

4

*

At

the prompt,

ALL EXT

5

to

access

4 test

fails,

the ALL

connect the

continue with

EXT 5

test. Then

equipment as

step

18.

press

shown in

N

NN

EXECUTE

Figure

NN

N

3-7

N

TEST

N

.

N

NN

N

Then

.

press

N

NN

CONT

NN

N

.

17.

18.

W

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ait

until

the

one

or

some

Recheck

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that

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the

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of

the

equipment

the

power

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displays

ALL

EXT

conguration

splitter

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continue

3-7.

P

ASS

or

tests

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terminations

the

connectors

with the

ALL

EXT

F

AIL.

and

connections;

Isolate F

5

T

est

,

and

cables

.

If

necessary

aulty Group

Setup

if

necessary

meet

their

,

retest.

Troubleshooting

,

retest.

published

chapter

.

3-8 Troubleshooting

INSPECT THE

If

the

Control

analyzer

Troubleshooting

is

operating unexpectedly

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chapter

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after these

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TURE

checks are

veried, continue

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Digital

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perform

the GPIB

the unexpected

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ASIC

system.

GPIB

interface

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the

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I/O

and

GPIB

Select

GPIB

code

cables

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ASIC

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arallel

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mini

operations

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hardware

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see

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9000

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to

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of

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eyboard

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at

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of

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Connector

Chapter

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the

is

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in

the

controller

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B

system.

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ASIC

system.

at the

Chapter 3,

the display

1, Installation

4396B.

analyzer

with

manuals

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ASIC

.

and

with

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see

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manuals

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controller

system.

Network Analyzer

Setup

guide

of

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and

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T

our

4396B

the

controller

of

the

User's

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Troubleshooting 3-9

4

Isolate

Faulty

INTRODUCTION

Use

these procedures

two

procedures:

OPERA

TOR'S CHECK

PERFORMANCE

These

and

Use

are procedures

receiver.

the

Descriptions

OPERA

Troubleshooting

when

any

of

the

group

.

TOR'S

after you

TEST F

to determine

CHECK

chapter

performance

Group Troubleshooting

have read

FAILURE

TROUBLESHOOTING

AILURE TROUBLESHOO

which group

of

these

groups

FAILURE

fails

.

Use

the

tests

fail.

the

Troubleshooting

TING

is faulty

are

provided

TROUBLESHOO

PERFORMANCE

These

procedures

in

the

in

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TING

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isolates

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when

F

chapter

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the

AILURE

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.

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Operator's

TROUBLESHOO

most

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chapter

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TING

faulty

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in

Isolate Faulty Group Troubleshooting 4-1

OPERATOR'S

P

erform

chapter

the

fails

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CHECK F

AILURE TROUBLESHOOTING

procedures sequentially

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Operator's Check

in

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when

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A5

synthesizer

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P

erform

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measurement

set

the

accuracy

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erform

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erformance

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frequency

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the

A5

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OUT

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power

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veries

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04396-90120).

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particular

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troubleshooted

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section.

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power

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level

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04396-90120).

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actual

frequency

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frequency

CY

TEST

in

appears

measurement

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sensor

to

A3

source

accuracy

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measure the

meets

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frequency

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measurement

accuracy

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at

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module

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frequency

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actual power

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analyzer

problem.

its

specication,

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erformance

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this

test

level

of A3A1

the

A3

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erformance

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OUT

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or

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frequency

passes

of

the

ALC,

source

with

the

signal

purposes

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est

controls

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to

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OUT

A3A2

module

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est

,

is

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the

measurement

controls,

set the

Then verify

If this

receiver.

test fails

test passes

Continue

the RF

problem

analyzer

OUT

,

continue

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with

troubleshooted

to

the

power

with

the

making

the

R

eceiver

4-2 Isolate Faulty Group Troubleshooting

particular

level

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operator's

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PERFORMANCE TESTS

P

erform

P

erform A

the

following

djustments and

procedure sequentially

Correction

FAILURE

when any

Constants

TROUBLESHOOTING

of performance

tests fail.

Figure

test

4-1 gives

fails.

correction

few

cases,

The

following

the

recommended

If

a

performance

constants function

other

adjustments

table

lists

some

test

and

fails

as

shown

correction

typical

adjustments

,

you

should

in

Figure

constants

cases

.

and

correction

perform

4-1

.

If

may

constants

the

corresponding

the

tests

bring

still

the

fail,

tests

when

a

adjustments

see

T

able

into

specication.

performance

or

4-1

.

In

a

Figure 4-1. Recommended Adjustments and Correction Constants.

Isolate Faulty Group Troubleshooting 4-3

Troubleshoot

T

able

4-1

lists

the

performance

following

table

T

able

test

Suspicious

functional

fails

,

you

lists

some

4-1.

Functional

groups

should

typical

Functional

to

suspect

check

cases

Group

.

the

In

to

a few

Suspect

Group

rst

when a

function groups

cases,

other groups

When

performance test

as shown

in the

may actually

a

P

erformance T

fails.

table.

est F

If a

The

be faulty

ails

.

Frequency

Source

Accuracy

Level

Non-Sweep P

P

ower

Sweep

Harmonics

Receiver

Input

Absolute

Magnitude

Calibrator

Displayed

Amplitude

Input

Resolution

IF

Gain

Noise

Frequency

Second

Third

Other

Residual

and Non-Harmonics

Noise

Crosstalk

Impedance

Amplitude

Ratio/Phase

Amplitude

A

Fidelity

Attenuator

Bandwidth

Switching

Sideband

Response

Harmonics

Order

Spurious

Response

T

est

A

ccuracy/Flatness

ower Linearity

Linearity

Level

A

ccuracy

Dynamic

Frequency

A

ccuracy

verage

Noise

Level

Switching

A

ccuracy/Selectivity

Switching Uncertainty

Uncertainty

Distortion

Intermodulation

.

A

ccuracy

Response

Uncertainty

Distortion

Source Receiver Most

p

p p

p

A9

p

p p

A5

p

p p

A8

A6

p

Suspicious

Assembly

4-4 Isolate Faulty Group Troubleshooting

P

ower Supply

INTRODUCTION

Use

this procedure

the

power supply

power

The

All

is

form.

Figure

If

chapter

supply functional

power supply

A40

Pre-Regulator

A50

DC-DC Converter

A2

P

ost-Regulator

assemblies

supplied

F

or

5-12

an

assembly

in

replacing

to

more

,

this

any

Figure

only if

.The

functional group

,

however

each

assembly

information

5-13

is

replaced,

manual.

assembly

Troubleshooting

you have

procedure is

group in

read

Troubleshooting

designed to

the shortest

possible time

consists of:

,

are

,

It

and

see

tells

Figure

about

Figure

T

able

what

to

the

5-1

shows

the

signal

5-14 at

13-1

additional

power

paths

the end

P

ost R

all

.

let

supply

power

epair

tests

,

and

you

identify

.

functional

lines

in

and

specic

of

this

chapter

Procedures

or

adjustments need

you

believe

the

bad

group

simplied

connector

.

in

the

problem

assembly

because

block diagram

numbers

P

ost

R

epair

to

be

done

is

within

the

power

,see

Procedures

after

5

in

Power Supply Troubleshooting 5-1

Figure 5-1. Power Supply Lines Simplied Block Diagram

5-2 Power Supply Troubleshooting

START

1.

Check

Turn

the

follow

continue

the

HERE

Error

analyzer

instruction

with

the

Messages

power

the

Check

on. If

one of

displayed

the

Fan

error messages

error message

is R

otating.

listed below

.If

no error

appears on

message is

the display

displayed,

,

Error

These

indicate

protect

information

Note

Messages

POWER

POWER FAILED

FAILED

messages

the

them

ON

-

ON PostRegHot

are

associated

A2

protective

from

over

about

the

These

of

these

power

supplies

displays

operation,

analyzer

--

shutdown

current,

A2

shutdown

messages

message

on

sequence

,

+15

an

error

any

is

turning

Instruction

One or

+5

V

displayed

on

the

EIGHT

This indicates

+5

V

on

A2

minutes

still

with

the

circuit

over

voltage

circuit,

are

displayed

is

displayed,

,

the

V

,

+5

V

,

message

front

key

the

some of

,

-5

V,

-15 V

power

A2

post-regulator

LEDs

in

,-5

V,

-15

post-regulator

.

Then

displayed,

power

analyzer

-5

analyzer

supplies

is

shutting

,

under

see

the

only

the

V

,

-15 V

and

stops

operations

power

A2

power

are displayed

supplies

this

START

A2 power

V

,

are

shut

.

Cool

turn

the

replace

functional

down

voltage

Figure

after

analyzer's

checks

.

If

a

power

its

operation.

are

disabled.

o.

supplies

are

shut down

. Continue

HERE.

supplies

down

analyzer

A2

post-regulator

some

,

and

5-13

P

the

power

front

the

shutdown

supply

,

in

-

,

+15

due

the

power

group

of

too

ower

on

keys

Once

The

+15

V

-

of

with the

V

,

to

too

analyzer

on.

.

These

A2

power

hot

conditions.

Supply

sequence

are

status

is

shut

the

only

,

+8.5V

the

message

due to

way

the trouble

CHECK THE

+8.5

V

hot

heat

for about

If

this

messages

supplies

Block

.

When

disabled.

of

the

down,

analyzer

to

,

+5.3

.

,

+5.3

sink

message

to

For

Diagram 2.

one

In

the

A2

power

the

analyzer

stops the

reset the

V

,

The

A2

V

,

30

more

is

2.

Check the

Look

at

the

If

the fan

this

chapter

If

the fan is rotating, continue with the next

3. Check the A50 SHUTDO

There is

procedure to check

a. Turn the analyzer

b. Remove the analyzer's top cover and shield plate.

c. Turn the analyzer power on.

d. Look at the A50 SHUTDOWN LED. The LED is normally on. The SHUTDOWN LED location

a LED

on A50 DC-DC Converter is shown in Figure 5-2.

Fan

is Rotating

fan

on

the

rear

is not

rotating,

.

, SHUTDOWN LED

it. The SHUTDOWN LED is described in the next

power o.

panel.

continue

Check

WN LED

, on the A50 DC-DC Converter

with

the

fan

is

the

FIND

Check the A50 SHUTDO

rotating.

OUT

WHY

THE

F

AN

IS

NOT

ROT

ATING

WN LED

.P

erform the following

A50 SHUTDO

Power Supply Troubleshooting 5-3

.

WN LED

in

.

If the

A50 SHUTDOWN

If the

connection is

IS OFF

If the

in this

A50 SHUTDOWN

procedure.

good, continue

chapter.

LED is

o, check

with the

on,

continue

the cable

FIND OUT

with

connection

WHY

the

Check

between

THE

the

A1

A50

+5

A50J2

SHUTDO

VD

LED

and

WN

in

A2J4.

LED

this

A50

Shutdown

The

A50

SHUTDOWN

A50

shutdown

There

o.

condition

condition,

shut

shutdown

For

are

two

When

the

on

though

down,

circuit

more information

circuitry

F

fan

the

LED

AN

conditions

is rotating,

power

the

F

an

P

ower +24

is

probably

LED

A50

about the

Supply Block Diagram 1.

Note

Once the A50 shutdown circuit is activated, the only way to reset the circuit is

turning the analyzer power o. W

Then turn it on.

.

lines

Figure

turning

5-2.

,

rotating

o

the shutdown

in

the A50

power

supplies

Vis

activated

A50 shutdown

A50

SHUTDO

indicates

and

not

some

rotating

circuit is

DC-DC Convereter

,+24

V,

still supplied

by

the F

AN LOCK

circuit operation,

WN

LED

Location

of

A50

power

when

probably activated

or the

+5 VD

to the

,

fan.

+18

When

supply

the

SHUTDOWN

A2

V

,

+7.8

the

P

ost

V

fan

is

shut

by

the

Regulator

,

-7.8

V

is

not

down by

LED turns

over

current

.

In

,

and

-18

rotating,

this

V

signal missing.

see

the

Figure

5-12

P

ower

ait a minute after turning the analyzer o.

the

are

the

5-4 Power Supply Troubleshooting

4.

Check

a.

Remove the

b.

Turn

c.

Look

LED

If

the

ON

If

the

Continue

5%

the

A1

analyzer's bottom

the

analyzer power

at

the +5

is normally

+5

VD LED

STEADIL

+5

VD LED

with

uncertainty,

+5

VD LED

on.

is o,

Y

in this

is on,

the

Check A2

perform steps

VD

LED

cover.

on.

. The

+5 VD

continue with

chapter.

the +5

Eight LEDs

LED location

VD

power

in the

in this

Measure

FIND

supply

procedure

on A1

OUT

is

veried

the

CPU

WHY

.

A1

If

+5

is

shown

THE

with

you

VD

A1

95%

want

V

oltage

+5

in

Figure

VD

LED

condence

to

conrm

.

5-3

.

The

IS

NO

level.

the

T

last

Figure 5-3.

Measure

reading

the

the DC

is within

A1

+5

voltage on

4.59 V

VD

to 5.61

V

oltage

a test

point

V.

If the voltmeter reading is out of the limits

IS NO

T ON STEADIL

Y

.

If the voltmeter reading is within the limits

A1 +5

A1TP8

VD LED

(+5

VD)

Location

using

, continue with the

, continue with the next step

a

voltmeter

.

Check

the

voltmeter

FIND OUT WHY THE A1 LED

.

5. Check the A2 Eight LEDs

a. Remove the analyzer's top cover and shield.

b. Turn the analyzer power on.

c. Look at the A2 eight LEDs. The A2 eight LED locations are shown in Figure 5-4. Check the

LEDs are correctly on.

If two or more LEDs are o, continue with the

TROUBLESHOOT A2 POST-REGULATOR

this chapter.

Power Supply Troubleshooting 5-5

in

If the

LEDs are

REGULATOR.

correctly on,

continue with

the next

Run

the

Internal

T

est

4:

A2

POST

6.

Run

The

internal

procedure

T

est

4:

A2

Press

4

System

4:

A2

POST

Figure

5-5

the

Internal

test

4:

to

check

POST

REGULA

N

NN

N

SERVICE MENU

5

,

REGULA

.

A2

the

Figure

T

est

4:

POST

REGULA

A2

post-regulator

A2

5-4.

POST

TOR

.

A2

Eight

veries

The

internal

LED

REGULA

the

A2

test

Locations

TOR

post-regulator

4

is

described

.

P

in

erform

the

Internal

TOR.

N

NN

N

NN

N

,

TOR.

After

TESTS

the

N

,

5

,

4

test

completed,

NN

N

EXECUTE TEST

5

,

4

x1

N

NN

N

to

the

test

result

execute

is

the

displayed

internal

as shown

test

in

Figure 5-5. Displayed Test Result

If \PASS" is displayed, the power supply function group are working properly with a 95%

condence level. To conrm the last 5% uncertainty of the A2 power supplies, measure the

all A2 power supply voltages.Seethe

MEASURE A2 POST-REGULATOR OUTPUT VOLTAGE

at the end of this chapter.

5-6 Power Supply Troubleshooting

If \F

a.

Press

power

b.

Continue

check

AIL" is

N

RETURN

the

displayed, perform

N

NN

,

is

faulty

N

NN

SERVICE

displayed

the

TROUBLESHOO

power

N

NN

supply

with

NN

N

supply

the following

N

NN

MODES

on

,

the

.

N

NN

BUS

LCD

T

steps.

NN

N

MEAS

NN

[ON]

.

A2

POST-REGULA

N

NN

DC

,

BUS

TOR

NN

.

Then the

in this

abbreviated faulty

chapter.

In particular

,

Internal

The

internal

power

supply

receiver

the

test

BUS,

see

T

est

IF

.

If

result

the

4:

test

4:

voltages

a

power

as

shown

Service

A2

POST

within

supply

K

ey

in

Menu

Figure

REGULA

the

limits

failure

5-5

is

.

chapter

TOR

is

a

built-in

using

the

found, the

For

more information

in

this manual.

diagnostics

DC

BUS and

analyzer stops

about the

test.

the A/D

the test

The test

checks all

converter on

process

internal

test

and

the

A6

displays

the

A2

DC

Power Supply Troubleshooting 5-7

FIND OUT

If

the

fan

is

not rotating,

Converter

1.

,

the

Check the

WHY THE

the problem

A2

post-regulator

Line V

oltage,

FAN

may be

,

or the

Selector

IS NOT

in the

fan.

Switch

ROTA

TING

A40 pre-regulator

Setting,

and

,the

Fuse

A50 DC-DC

Check

correct.

pry

R

the main

Figure 5-6

o the

equirements

fuse

in

power line

shows how

holder

.

F

Appendix

cord, line

or

more

C.

fuse

to remove

information

,

the

and

actual

line

about

fuse

the

line

,

using

voltage

line

a

cord

to

small

and

see

that

at-bladed

line

fuse

they

are

screwdriver

,

see

the

all

P

ower

to

2.

Check

When

the

Diagram 1.

circuit in

the F

AN LOCK

LED

turned

the

fan

stops

The fan

the A50

SENSE circuit

o.

Figure 5-6.

A50

SHUTDOWN

,

the

A50 SHUTDOWN

generates a

DC-DC converter

activates the

F

AN

.

LOCK

If

Removing Line

LED

LED is

signal.

the

F

AN

stops

A50 shutdown

o. See

The

signal

,

the

Fuse

the

Figure

is

fed

F

AN

LOCK

circuitry

5-12

into

signal

,

resulting

P

the

ower

F

AN

is

missing.

the

Supply

LOCK

SENSE

Then

SHUTDOWN

Perform the following procedure to check the A50 SHUTDOWN LED on.

a. Remove the analyzer's top cover and shield plate

.

b. Make sure the A2 post-regulator is rmly seated and the cables are connected properly

c. Turn the analyzer power on.

d. Look at the A50 SHUTDOWN LED

. The LED location is shown in Figure 5-2.

If the SHUTDOWN LED is on, replace the A50 DC-DC Converter.

If the SHUTDOWN LED is o, check the cable connection between A50J2 and A2J4. If

the connection is good, continue with the

DC-DC Converter

in this chapter.

TROUBLESHOOT THE FAN AND THE A50

Block

.

5-8 Power Supply Troubleshooting

FIND OUT

Use

this

procedure

THE

F

AN

IS

NO

If

the

fan

is

rotating,

is

protecting

may

be

DC-DC

VD

supply

1.

Disconnect

Turn

the

shorted

Converter

and

analyzer

on.

If

the

A50

SHUTDOWN

If

the

A50

SHUTDOWN

analyzer

the

2.

Disconnect the

Turn

power

Cable

from

the analyzer

on.

If

the

A50

SHUTDOWN

If

the

A50

SHUTDOWN

and

reconnect

A1J10

.

WHY THE

when

the fan

T

ROT

ATING

the

A50 SHUTDOWN

+5

VD

power

with

one of

,

the

A2

post-regulator

the

higher

the

power

Cable

o.

LED

o

and

reconnect

the

A51J2

.

Cable from

power

o.

LED

the

cable

to

A50 SHUTDO

is rotating.

.

supply

power lines

from

higher than

, and

supplies.

from

Disconnect

is

goes

still

o,

on,

the

replace

the

cable

the

Disconnect

goes

is

still

the

A51J2.

on,

o,

the

replace

the

Continue

WN LED

If the

fan is

LED turning

the over

voltage condition.

+5 V

any of

assemblies obtaining

A50J1

cable

from

the

A50

DC-DC

to

the

A50J1.

A51J2

cable

from

the

A51

GSP

with

not rotating,

o indicates

.

The

problem

the

A50J1.

DC-DC

Converter

Continue

the

A51J2.

GSP

.

is

veried.

the

see the

the A50

The +5

may

the

Turn

the

Converter

is

veried.

with

Turn

the

Turn

the

Disconnect

FIND OUT

shutdown circuit

VD power

be

in

the

A50

power

from

analyzer

power

.

Turn

the

analyzer

the

Cable

power

from

WHY

line

+5

o

the

3.

Disconnect

Turn

the

analyzer

If

the

A50

If

the

A50

and

reconnect

4. Remove

a.

Turn

the

b.

Remove the assemblies

c. Turn

the analyzer power on.

If the A50 SHUTDOWN LED is still o, the A2 post-regulator is

Replace the A2 post-regulator

the

Cable

power

o.

SHUTDOWN LED

SHUTDOWN

the

cable

LED

to

Assemblies

analyzer power

, A3, A4, A5, and A6. Don't remove the A2 post-regulator

from

Disconnect

goes on,

is still

the A1J10.

the

A1J10

the

cable

replace the

o, the

A1 CPU

Continue with

from

A1 CPU

is

the next

A1J10.

.

veried.

o.

. If the SHUTDOWN LED is still o after

Turn

the

Turn

the

R

emove

A

probably faulty

analyzer

ssemblies

power on.

power

.

replacing the A2

post-regulator, inspect the A20 motherboard for soldering bridges and shorted traces on

the F

AN POWER and the F

AN LOCK signal paths

.

If the A50 SHUTDOWN LED goes on, the A2 post-regulator and the A20 motherboard are

veried. Continue with the next step.

d. Reinstall each assembly one at a time. Turn the analyzer power on after each is installed.

The assembly that causes the A50 SHUTDOWN LED to go on is the most probable faulty

assembly. Replace the assembly.

o

Power Supply Troubleshooting 5-9

FIND OUT

If

the

+5

VD

power

the

1.

a.

b.

c.

d.

the

analyzer

A1

CPU

,

and

Check the

Turn

the

analyzer

Disconnect

Turn

the

analyzer

Check

V

using

If

the

If

the

a

voltmeter

voltage

analyzer

Check

the

WHY THE

LED is

not on

.

The

any

of assemblies

problem

A1 +5

steadily,

A40 Pre-Regulator

a

cable

power

A50

power

between

reading

o

DC-DC

form

with

and

o.

the

A50J1.

on.

the

a

small

is

out

is

within

reconnect

Converter

VD LED

the +5

may be

in the

obtaining the

The

1

and

probe

.

of

the

limits

the

limits

the

cable

section.

VD line

voltage is

A40 pre-regulator

power from

A50J1

location

6(GND)

,

replace

,

the

to

the

A40

A50J1.

IS NOT

missing or

+5 VD

is

shown

of

the

cable within

the

A40

pre-regulator

Then

ON STEADIL

is

not

enough

,the

A50 DC-DC

supply.

in

Figure

5-7

.

+22.0 V

pre-regulator.

is

veried.

continue with

Y

to

Converter,

to +27.0

Turn

the

the next

Figure 5-7. A40J1

Output V

oltage

2. Check the A50 DC-DC Converter

a. Turn the analyzer power o.

b. Disconnect a cable form the A50J3. The

A50J3 location is shown in Figure 5-7 .

c. Turn the analyzer power on.

d. Check the voltage between the A50J3 pin 1 and pin 6(GND) within +4.59 V to +5.61 V

using a voltmeter with a small probe.

If the voltmeter reading is out of the limits, replace the A50 DC-DC Converter.

5-10 Power Supply Troubleshooting

If the

Turn the

the next

3.

Disconnect

voltmeter reading

analyzer power

Disconnect Cables

Cables

is within

o and

on the

the

limits

reconnect

A1

CPU

A1 CPU

,

the

A50

the

cable

section.

+5

to

VD

the

power

A50J3.

supply

Then

is

veried.

continue

with

a. Turn

the analyzer

b. Disconnect

connector

power

cables from

locations

are

o.

the

A1

shown

CPU's

in

Figure

connectors

5-8

,

J10,

J11,

J12,

J13,

J14,

J15,

and

J17.

The

c.

d.

Turn

If

Turn

on.

the

analyzer

the

LED

the

LED

the

analyzer power

Look at

the A1

is

still

goes

power

o,

on,

the

+5 VD

Figure

on.

the

A1

o. Reconnect

Look

A1

CPU

LED.

5-8.

CPU

A1

at

the

is

probably

is

veried.

CPU

Connector

A1 +5

faulty.

Continue

the cable

VD LED

to the

Locations

.

Replace the

with the

A1J10.

If the +5 VD LED goes out, the problem may be in the analog assemblies

the next

If the + 5 VD LED is still on, continue with the next step

e. Reconnect one of the disconnected cables to

power on after each cable is connected. The assembly

VD LED o is probably faulty

Remove Assemblies

.

. Replace the

.

its connector at a time

related with the cable turning the +5

assembly.

A1 CPU

next step

Turn

the

.

analyzer

. Continue with

. Turn the analyzer

power

Power Supply Troubleshooting 5-11

4.

Remove

a.

Turn the

remove

b.

Turn

If

replacing

If

with

c.

Reinstall

is

installed. The

assembly

Assemblies

analyzer power

the

A2

the

analyzer power

the LED

the A2

the

LED

the

. Replace

post-regulator.

is still

o, replace

post-regulator,

goes on,

the A2

step.

of the

removed assemblies

assembly that

the assembly

o. Remove

on. Look

at the

the A2

inspect the

post-regulator and

turns the

.

the assemblies

A1 +5

VD LED

post-regulator

A20 motherboard.

the

at a

time

.

Turn

A1

+5

VD

,A3,

.

If

the

A20

motherboard

the

LED

on

A4, A5,

+5

analyzer

is

the

A6 and

VD

most

LED

are

power

probable

A60.

is

still

veried.

on

Do

o

after

faulty

not

after

Continue

each

5-12 Power Supply Troubleshooting