Tektronix P6231 User manual

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]

TEK

INSTRUCTION

MANUAL

First

Printing

MAY

1986

Revised

SEP

1987

P6231

PROBE

Please Check

for

Part

No.

070-6027-00

Product

Group

CHANGE

INFORMATION

at the Rear

This Manual

Contents of this publication may not

reproduced

any

form without the written permission

Tektronix, Inc.

Products

Tektronix, Inc. and its subsidiaries are covered

by U.S. and foreign patents and/or pending patents.

TEKTRONIX, TEK, SCOPE.MOBILE, and 8 are

registered trademarks

Tektronix, Inc. TELEQUIPMENT

is a registered trademark

Tektronix U.K. Limited.

Printed

U.S.A. Specification and price change privileges

are reserved.

TABLE

CONTENTS

LIST

ILLUSTRATIONS

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

.iii

liST

TABlES............................................................v

OPERATORS

SAFETY

SUMMARY

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

SERVICING

SAFETY

SUMMARY

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

vii

SECTION

SPECIFICATION

DESCRIPTION

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

1.1

ACCESSORIES

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

1-1

PERFORMANCE

CONDITIONS

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

1-2

SECTION

OPERATING

INSTRUCTIONS

INTRODUCTION

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

2·1

OPERATING

CONSIDERATIONS.................

2-1

Probe

Handling

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

2.1

Input

Dynamic

Range

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

2-1

Probe

Grounding

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

2-2

CONTROLS

AND

CONNECTORS

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

2-4

PROBE

ACCESSORIES

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

2-4

OPERATION

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

2-7

P6231

SECTION

PERFORMANCE

CHECK

PURPOSE

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

3-1

TEST

EQUIPMENT

REQUIRED

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

3-1

LIMITS

AND

TOLERANCES

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

3-1

PREPARATION

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

3-1

PROCEDURE

STEPS

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

3-3

Offset

Check

........................................3-3

Bandwidth/Rise

Time

High-Frequency Aberrations

Check

...........3-5

WAit"'''.

The following servicing instructions are

for

use by

qualified personnel only. To avoid personal injury, do

not perform any servicing other than that contained in

operating instructions unless you are qualified to do

so.

TABLE

CONTENTS

(cont)

SECTION

ADJUSTMENT

PROCEDURE

PURPOSE

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

4-1

TEST

EQUIPMENT

REQUIRED

..............•...•.

4-1

ADJUSTMENT

SEQUENCE

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

4-1

ADJUSTMENT

LOCATIONS

.......•.................

4-1

PREPARATION

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

4-2

PROCEDURE

STEPS

••.....•••....................•...•.

4-4

Check/Adjust

Offset

NulI..

.......•....•.............

4-4

Check/Adjust

Attenuation

Aoouracy

and

Mid-Frequency

Response

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

4-4

SECTION

THEORY

OPERATION

INTRODUCTION

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

5-1

GENERAL

CIRCUIT

DESCRIPTION

.......•.....

5-1

DETAILED

CIRCUIT

DESCRIPTION

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

5-1

SECTION

MAINTENANCE

INTRODUCTION

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

6-1

STATIC-SENSITIVE

COMPONENTS

...........

6-1

PREVENTIVE

MAINTENANCE

.....................6-3

Cleaning......................................................6-3

Vlsuallnspection..•.......•...•...••..•...........•.•...

6-4

Semiconductor

Checks

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

6-4

TROUBLESHOOTING

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

6-4

Troubleshooting

Techniques

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

6-9

CORRECTIVE

MAINTENANCE

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

6-10

Maintenance

Precautions

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

6-10

Obtaining

Replacement

Parts

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

6-10

PROBE

DISASSEMBL

y................................

6-11

Control

Box.

Disassembly..........................

6-11

Cable

Assembly

Replacement

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

6-12

Probe

TIP

Replacement

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

6-13

Button

Replacement

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

6-13

READJUSTMENT

AFTER

REPAIR

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

6-13

INSTRUMENT

REPACKING

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

6-13

SECTION

REPLACEABLE

PARTS

DIAGRAMS

REPLACEABLE

ELECTRICAL

PARTS

REPLACEABLE

MECHANICAL

PARTS

OPTIONAL

ACCESSORIES

P6231

]

LIST

ILLUSTRATIONS

Figure Page

The

P6231

Probe

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

viii

1-1

Typical

input

impedance

versus

frequency

..........................................................1-6

2-1

Damaging

effects

of ground-

lead

Inductance

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

2-2

Reducing

the effects of

ground-lead

inductance....................................2-3

2-3

Controls.

connectors,

and

probe

accessories

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

2-5

2-4

Example

reduced

loading ............................

2-7

P8231

iii

LIST

ILLUSTRATIONS

(cont)

Page

Figure

3-1

Offset-check setup...........................................3-4

3-2

High-frequency

check setup ............................

3-4

4-1

P6231

adjustment locations ............................4-5

5-1

Functional block diagram.................................5-2

6-1

Disassembly of control box .............................6-12

7-1

Main circuit-board layout.

7-2 Flexible circuit-board layout.

7-2 Component layout for trouble shooting.

P6231

._t

LIST OF TABLES

Table

Page

1-1

Electrical Characteristics..................................1-2

1-2 Environmental Characteristics .........................1-5

1-3

Physical Characteristics...................................

1-5

2-1

Typical Performance

Effects

Grounding COnftgurations............................2-6

3-1

Test Equipment

Required

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

3-2

4-1

Test Equipment

Required

................................4-2

6-1

Relative Susceptibility To Static

Discharge

Damage

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

6-2

6-2 Troubleshooting Equipment.............................

6-5

6-3 Fault Indication

and

Probable Cause ..............

6-5

P8231 v

OPERATORS

SAFETY

SUMMARY

The general safety information in this part

the summary is

for

both operating and servicing personnel. Specific warnings and

cautions will be found throughout the manual where they apply. but may not appear in this summary.

Terms

This

Manual

WARNING

statements identify conditions or practices that

could

result

personal

injury or loss of life.

CAUTION

statements identify conditions or practices that

could

result

damage

the

equipment

or other property.

Not

Operate

Explosive

Atmospheres

avoid

explosion,

not operate this product

any

ex-

plosive atmosphere

unless

has

been specifically certified

for

such

operation.

Not

Remove

Covers

avoid

personal

injury, do not

remove

the

product cov-

ers.

not operate

the

product without

the

covers

prop.

erly installed.

P8231

;

SERVICE

SAFETY

SUMMARY

FOR QUALIFIED

SERVICE

PERSONNEL

ONLY

Refer a/so to the preceding Operators Safety Summary.

Not Service Alone

Use

Care When Servicing With Power

not perform internal service or adjustment of this pro-

aVoid

personal injury, do not touch exposed connec-

duct unless another person

present and capable of tions

and

components while power is

on.

rendering

first aid

and

resuscitation.

P6231

vii

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