Tektronix P6231 User manual

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INSTRUCTION Part No. 070-6027-00

TEK

MANUAL

Product Group 60

PROBE

Please Check

for

CHANGE

INFORMATION

at the Rear

This Manual

First Printing

MAY

1986

Revised

MAR

1987

1986

Tektronix, Inc.

All

rights reserved.

Contents of this

publication may not be reproduced in any

form without the written permissionof Tektronix, Inc.

Products of Tektronix, Inc. and its subsidiaries are covered

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

TEKTRONIX, TEK, SCOPE-MOBILE, and are

registered trademarks

Tektronix, Inc. TELEQUIPMENT

is a registeredtrademark of Tektronix U.K. Limited.

Printed in

U.S.A.

Specification and price change privileges

are reserved.

TABLE

CONTENTS

...

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

LIST OF ILLUSTRATIONS

111

LIST OF TABLES

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

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

OPERATORS SAFETY SUMMARY

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

SERVICING SAFETY SUMMARY

vii

SECTION

SPECIFICATION

DESCRIPTION

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

1-1

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

ACCESSORIES

1-1

PERFORMANCECONDITIONS

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

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

SECTION

PERFORMANCE

CHECK

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

PURPOSE 3-1

TEST EQUIPMENT REQUIRED

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

.3-1

LIMITS AND TOLERANCES

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

3-1

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

PREPARATION

3-1

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

PROCEDURESTEPS 3-3

DC Offset Check

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

3-3

BandwidthIRise Time

High-FrequencyAberrations Check

...........

3-5

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

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

CheckIAdjust Offset Null

4-4

CheckIAdjust Attenuation Accuracy

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

and Mid-Frequency Response

4-4

SECTION

THEORY OF OPERATION

INTRODUCTION

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

5-1

GENERALCIRCUIT DESCRIPTION

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

5-1

DETAILEDCIRCUIT DESCRIPTION

............5-1

TROUBLESHOOTING

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

6-4

Troubleshooting Techniques

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

6-9

CORRECTIVEMAINTENANCE

..................6-10

MaintenancePrecautions

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

6-10

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

Obtaining ReplacementParts

6-10

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

PROBE DISASSEMBLY

6-11

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

Control Box Disassembly

6-11

CableAssembly Replacement

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

6-12

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

Probe Tip Replacement

6-13

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

Button Replacement

6-13

READJUSTMENTAFTER REPAIR

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

6-13

INSTRUMENTREPACKING

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

6-13

SECTION

MAINTENANCE SECTION

REPLACEABLE PARTS

INTRODUCTION

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

6-1

DIAGRAMS

STATIC-SENSITIVECOMPONENTS

...........

6-1

REPLACEABLEELECTRICALPARTS

PREVENTIVE MAINTENANCE

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

6-3

REPLACEABLEMECHANICAL PARTS

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

Cleaning

6-3

OPTIONAL ACCESSORIES

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

Visual Inspection

6-4

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

SemiconductorChecks

6-4

LIST

ILLUSTRATIONS

Figure

Page

...

The P6231 Probe

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

VIII

Typical input impedance versus

frequency..

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

.I-6

Damaging effects of ground-

lead inductance

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

2-2

Reducing the effects of

ground-leadinductance

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

2-3

Controls, connectors, and

probe accessories

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

2-5

Example of reducedloading

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

2-7

iii

LIST

ILLUSTRATIONS

(cont)

Figure

Page

3-1 Offset-check setup

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

3-4

3-2 High-frequency check setup

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

3-4

4-1 P6231 adjustment locations

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

4-5

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

5-1 Functionalblock diagram 5-2

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

6-1 Disassembly of control box 6-12

7-1 Main circuit-boardlayout.

7-2 Flexible circuit-boardlayout.

7-2 Component layout for trouble shooting.

LIST

TABLES

Table

Page

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

ElectricalCharacteristics

..I-2

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

Environmental Characteristics

1-5

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

PhysicalCharacteristics.

..I-5

Typical Performance Effects

of Grounding Configurations

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

2-6

Test Equipment Required

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

3-2

Test Equipment Required

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

4-2

RelativeSusceptibility To Static

Discharge Damage

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

6-2

Troubleshooting Equipment

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

6-5

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

Fault Indication and Probable Cause 6-5

OPERATORS SAFETY SUMMARY

The general safety information in this part of the summary isfor both operating and servicing personnel. Specijic warnings and

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

Terms In This Manual Do Not Operate In ExplosiveAtmospheres

WARNING

statements identify conditions or practices that TOavoid explosion, do not operate this product in any ex-

could result in personal injury or loss of life. plosive atmosphere unless it has been specifically certified

for such operation.

Do Not Remove Covers

CAUTION

statements identify conditions or practices that

avoid personal injury, do not remove the product cov-

could result in damage to the equipment or other property. ers. Do not operate the product without the covers prop-

erly installed.

SERVICE

SAFETY

SUMMARY

FOR

QUALIFIED

SERVICE PERSONNEL ONLY

Refer

also

to [he preceding Operators Safety Summary.

Do Not Service Alone Use Care When Servicing With

Power

Do not perform internal service or adjustment of this pro- To avoid personal injury, do not touch exposed connec-

duct unless another person is present and capable

tions and components while power is on.

renderingfirst aid and resuscitation.

vii

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