Tektronix 2235 Manuale utente

2235

OSCILLOSCOPE

SERVICE

INSTRUCTION

MANUAL

Ictro

ηά

THE

NG S

ERV

ICI

CTIONS

R US

PER

NNEL

ONL

O A

OID

PER

NJUR

DO NOT

PER-

ORM

ANY

SERV

ICI

GOTHERTHAN

THAT

TAI

OPER

ATI

NST

CTIONS

UNLE

REFER

OP-

ERATORS

UMM

RY A

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ERV

UMM

RY PR

PERF

ANY

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tro

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for

uct

Information,

call

1-800-426-2200

ext

ego

call

collect

(503)627-9000

ext

atio

eti

Box

500 D/S

6-088,

eaverto

97077

PLE

ATIO

THE

2235

OSCILLOSCOPE

ERV

CTIO

tronix,

Inc

Box

500

eaverto

Oregon



97077



Serial

umber

ITT

ELLEN

070-4206-00



irst

rinting

1982

uct

Gro



evised

MAY

1983

Copy

1982

k tro n

ix,

All rig

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tents

publicatio n

may

not

e re pr

oduce

any

form

wit

out

itten

missio

n of

tronix,

Inc

Prod

cts

tronix,

and

its

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sidia

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are

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atents

and

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ate

IX,

ΤΕΚ

SCO

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imited

Printe

ecificatio

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ange

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are

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NST

RUMEN

NUMBER

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

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2235

Service

LIST

ILLUSTRATIONS



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



iii



SECTION



THEORYOF

OPERATION

LIST

TABLES



. .

....

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



iii



INTRODUCTION

........

.....

...



3-1

OPERATORS

SAFETY

SUMMARY



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



GENERAL

DESCRIPTION



........



3-2

SERVICING

SAFETY

SUMMARY

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

...



DETAILEDCIRCUIT

DESCRIPTION



3-3

VERTICAL

ATTENUATORS

.....



3-3

SECTION



SPECIFICATION



Coupling

....

.........



3-3

INTRODUCTION

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



1-1



uffer

Amplifier

and

Gain

ACCESSORIES

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

...

1-1



Switching

Network

..........

3-4

PERFORMANCE

CONDITIONS

....



1-1



Paraphase

Amplifier

........



3-4

VERTICAL

PREAMPLIFIERS



. . .

3-5

SECTION2



OPERATING

INSTRUCTIONS



CHANNEL

SWITCH

PREPARATION

FOR

USE



....



2-1



VERTICAL

OUTPUT



........



3-5

SAFETY

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

....

2-1



Delay

ine

Driver

.........

3-6

INE

VOLTAGE



.........

....



2-1



ertical

Output

Amplifier

...

. .



3-6

POWER

CORD

........

. .....

2-1



Sweep

Separation

Circuit

3-7

INE

FUSE

.........

....

.....



2-1



TRIGGER

AMPLIFIERS

AND

INSTRUMENT

COOLING

.......



2-2



SWITCHING

.........

.......



3-7

CONTROLS,



CONNECTORS,



AND



Internal

Trigger

.....

.......



3-7

INDICATORS

...

.....

...........



2-2



Internal

Trigger

Amplifier



.....



3-8

POWER,

DISPLAY,

AND

PROBE



External

Trigger

lifier

...



3-8

ADJUST



...

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



2-2



ine

Trigger

Amplifier

........



3-8

VERTICAL



....

...........



2-3



TRIGGER

GENERATOR

......



3-9

HORIZONTAL

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



2-4



Trigger Level

Circuit

.......



3-9

TRIGGER



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



2-6



Trigger

evel

Comparator



. .



3-9

REAR

PANEL

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



2-7



Schmitt

Trigger

and

OPERATING

CONSIDERATIONS

...



2-8



Trigger

Circuit



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



3-9

GRATICULE

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

...



2-8



SWEEP

GENERATOR

AND

GROUNDING

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

...

2-8



OGIC

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

3-9

SIGNAL

CONNECTIONS

...



2-8



iller

Sweep

Generator

...



3-10

INPUT

COUPLINGCAPACITOR



Sweep

ogic



.........

. .



3-11

PRECHARGING

..........

...

2-8



ALTERNATE

SWEEP

......

3-11

OPERATOR'S

ADJUSTMENTS

...



2-9



iller

Sweep

Generator

...



3-12

INTRODUCTION



......

...

....



2-9



Trigger

evel

Comparator



3-12

TRACE

ROTATION

...

....

.....



2-9



Runs

After

Delay

.....



3-12

PROBE

COMPENSATION

. .

....



2-9



Delay

Time

Position

OSCILLOSCOPE

DISPLAYS

......

2-10



Comparator

........

......

3-12

INTRODUCTION



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

2-10



Swee

ogic



. .

...

.......

3-12

ASELINE

TRACE

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



2-10



Alternate

Dis

lay

Switching

SIGNAL

DISPLAY



. .

..........

2-11



ogic



........

...........

3-13

AGNIFIED-SWEEP

DISPLAY



. .



2-11



ΒΖ

-Axis

ogic

.....

.......



3-13

DELAYED-SWEEP

DISPLAY

....

2-11



HORIZONTAL

...

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

3-13

DELAYED-SWEEP



Horizontal

Pream

lifier

.......

3-14

MEASUREMENTS

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



2-11



Amplifier



........



3-14

SINGLE-SWEEP

DISPLAY

......



2-12



Horizontal

Output

Amplifier

...



3-15

DISPLAY

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

2-12



Z-AXIS

AMPLIFIER

...........

3-15

SIGNAL

DISPLAYS



....... .

2-12



Restorer

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

3-16

2235

Service

Page



Page

SECTION



THEORYOF

OPERATION

(cont)



SECTION



AINTENANCE

(cont)

POWER

SUPPLY

AND

PROBE



NTRODUCTION



...........

. .



6-2

ADJUST

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

.....

. .



3-17



GENERAL

CARE

...........



6-2

Power

Input

........

.....

. .

3-17



INSPECTION

AND

CLEANING



6-2

Preregulator

........

.....

. .

3-17



LUBRICATION

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

. .

6-4

Inverter

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

.....

. .

3-18



SEMICONDUCTOR

CHECKS

. .

6-4

Crt

Supply

.........

.....

. .

3-18



PERIODIC

READJUSTMENT



. .

6-4

Focus

Circuit

.......

.....

. .



3-18



TROUBLESHOOTING

.........

. .



6-5

ow-Voltage

Supplies



.....

. .



3-19



INTRODUCTION



...........

. .



6-5

Probe

Adjust



......

. .



3-19



TROUBLESHOOTING

AIDS



. .



6-5

TROUBLESHOOTING

EQUIPMENT

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

...

6-6

SECTION



PERFORMANCE

CHECK



TROUBLESHOOTING

PROCEDURE



TECHNIQUES

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

. .

6-6

INTRODUCTION

..........

.....

4-1



CORRECTIVE

MAINTENANCE

. .

6-10

PURPOSE

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

...

. .

4-1



INTRODUCTION

..........

...

6-10

STRUCTURE

..........

.....

4-1



AINTENANCE

PRECAUTIONS



6-10

TEST

EQUIPMENT

.....

4-1



OBTAINING

REPLACEMENT

IMITS

AND

TOLERANCES

...



4-1



PARTS



. .

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

. .



6-10

PREPARATION

FOR

CHECKS



4-2



AINTENANCE

AIDS



......

...



6-10

INTRODUCTION



NTERCONNECTIONS

......

. .

6-10

PERFORMANCE

CHECK

STEPS



4-3



TRANSISTORS

AND

VERTICAL



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

.....



4-4



INTEGRATED

CIRCUITS

... ....



6-11

HORIZONTAL

..........

....



4-8



SOLDERING

TECHNIQUES



....



6-12

TRIGGER



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

.....



4-12



REMOVAL

REPLACEMENT

EXTERNAL

Z-AXIS

AND

PROBE



NSTRUCTIONS

.........

....



6-13

ADJUST

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

....

4-15



Cabinet

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

....

6-13

Cathode-Ray

Tube

...... ....



6-13

SECTION5



ADJUSTMENT

PROCEDURE



Power-Supply

Shield

...

....



6-14

INTRODUCTION

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



5-1



ilter

Circuit

oard

. .

....



6-14

PURPOSE



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



5-1



Alt

Sweep

Circuit

oard



....



6-15

STRUCTURE



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



5-1



Attenuator

Circuit

oard



....



6-15

TEST

EQUIPMENT

...........

5-1



Timing

Circuit

oard

...

....

6-16

IMITS

AND

TOLERANCES



....



5-1



ottom

Shield,

Attenuator

ADJUSTMENT

INTERACTION



. .



5-1



Timing

Circuit-Board

odule

. .



6-17

PREPARATION

FOR



Front-Panel

Circuit

oard



....



6-17

ADJUSTMENT

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

5-1



ain

Circuit

oard

. .

.......

6-18

INDEX

TOADJUSTMENT



REPACKAGING

SHIPMENT



6-20

PROCEDURE

STEPS



.........



5-3



SELECTABLE

COMPONENTS



. .



6-20

POWER

SUPPLY

AND

CRT

DISPLAY

5-4

VERTICAL

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



5-6



SECTION



OPTIONS

ORIZONTAL

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

5-14

TRIGGER



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



5-20



SECTION8



REPLACEABLE

ELECTRICAL

PARTS

EXTERNAL

Z-AXIS

AND

PROBE



SECTION



DIAGRAMS

ADJUST

. .

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

5-24

SECTION

REPLACEABLE

MECHANICALPARTS

SECTION



AINTENANCE



Accessories

STATIC-SENSITIVE

COMPONENTS



6-1

PREVENTIVE

MAINTENANCE

.....

6-2



CHANGE

INFORMATION

ιι

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(cont)

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age

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.........

.....

. .



2-7

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ear-

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

. .



2-7

1-1



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2-8

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2-8

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

. .



2-10

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..... ..

...

. .



1-7



3-1



loc

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3-4

2-1



oltage,

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fuse

data

....

. .



2-1

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3-2



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circ

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.......

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

.....

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3-6

2-3

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3-3

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loc

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...

. .

.......

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2-3

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...........

.......

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3-10

2-4

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........

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2-4



3-4



loc

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

3-14

2-5



orizontal

controls



......

.....

........

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2-5



3-5



Sim

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diagram

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2-6



Trigger

controls,

connector,

and

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

2-6



circuitry



......

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



3-16

6-1



ulti-co

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older

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

.......



6-6

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2235

Service



age



age

1-1



lectrical

aracte

istics

. .

.....

........



1-2



5-4



Attenuator

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

5-9

1-2



nvironmental

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...

.......



1-8



5-5



Settings

for

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

.........

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5-12

1-3



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istics



. .

.....

........



1-9



5-6



Settings

Timing

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

5-17

4-1



Test

ment

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

......

.......



4-2



5-7



Setti

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5-18

4-2

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imits

.....

.......



4-4



5-8



Switch

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

........

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4-6



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

.........

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5-21

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4-9



6-1



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

Setti

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Acc

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

Damage

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



6-1

4-6



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. .

.........

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6-3

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

.....

........

4-12

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.........

6-3

5-1

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. .

.....

........

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5-2

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6-4

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.........

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6-8

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.....

........

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5-4



6-5



ance

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......

.....

.........

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6-11

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.....

........

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5-8



6-6

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

. .

........



6-20

2235

Service

Symbols

Manual

PER

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UMM

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safety

information

art

of t

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1-3

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