Tektronix 7B53A Manuale utente

Tektronix, Inc.

P.O.

Box 500

Beaverton, Oregon 97077

070-1342-01

Product Group 42

lI!ktron~

COMMITTED TO EXCELLENCE

PLEASE CHECK FOR CHANGE INFORMATION

AT THE REAR OF THIS

MANUAl.

7B53A/7B53AN

DUAL TIME BASE

INSTRUCTION

MANUAL

/;<

1/:;-"

t?~

,)'-

First Printing SEP 1980

Revised MAY 1988

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Dave & Lynn Henderson

Artek Med

1972,

1980

Tektronix, Inc.

All

rights reserved.

Contents of this publication may not

reproduced

any

form without the written permission of Tektronix, Inc.

Products of Tektronix, Inc.

and

its subsidiaries

are

covered

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

TEKTRONIX, TEK, SCOPE-MOBILE, and " are

registered trademarks

Tektronix, Inc. TELEQUIPMENT

a registered trademark

Tektronix U.K. Limited.

Printed

U.S.A. Specification

and

price change privileges

are reserved.

INSTRUMENT SERIAL NUMBERS

Each instrument has a serial number on a panel insert, tag,

or stamped

the chassis. The first number or letter

designates the country of manufacture. The last five digits

of the serial number are assigned sequentially

and

are

unique to each instrument. Those manufactured

the

United States have six unique digits. The country of

manufacture is identified

follows:

BOOOOOO

100000

200000

300000

700000

Tektronix, Inc., Beaverton, Oregon, USA

Tektronix Guernsey, Ltd., Channel Islands

Tektronix United Kingdom, Ltd., London

Sony/Tektronix, Japan

Tektronix Holland,

NV,

Heerenveen,

The Netherlands

7B53A/7B53AN

TABLE OF CONTENTS

Page

LIST

ILLUSTRATIONS

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

. iii

LIST

TABLES

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

. iv

OPERATORS SAFETY SUMMARY

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

. v

SERVICE SAFETY SUMMARY

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

. vii

Section 1 SPECIFICATION. . . . . . . . . . . . . . . .

1-1

Section 2 OPERATING INSTRUCTIONS. . . . . .

2-1

Controls and Connectors

....

. . . . .

2-1

Operating Checkout

.....

. . . . . . . .

2-3

General Operating Instructions. . . . .

2-6

Applications. . . . . . . . . . . . . . . . . . . .

2-13

Repackaging for Shipment . . . . . . . .

2-20

WARNING

The

remaining portion

this

Table

Contents lists the

servicing instructions. These servicing instructions are for

use

qualified personnel only.

avoid electrical shock,

not

perform anyservicing otherthan that called

out

the

operating instructions unless qualified to do so.

Section 3 THEORY

OPERATION

3-1

Simplified Block Diagram. . . . . . . . .

3-1

Circuit Operation

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

3-3

Main Trigger

Preamp.

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

3-4

Main Trigger Generator

(SN

B210000

& Up 7B53A Only) . . . . . . . . . . . . . . .

3-4

Main Trigger Generator (SN B209999

& Below) . . . . . . . . . . . . . . . . . . . . . . .

3-7

Main Sweep

Generator.

. . . . . . . . . .

3-9

Delayed Trigger Generator

(SN

B210000 & Up 7B53A Only) . . .

3-12

REV

DEC

1982

Section 3 THEORY

OPERATION

(cont'd)

Delayed Trigger Generator

Page

(SN

B209999 & Below). . . . . . . . . . .

3-12

Delayed Sweep Generator . . . . . . . .

3-12

Horizontal Preamp. . . . . . . . . . . . . . .

3-17

Readout Switching

....

. . . . . . . . . .

3-18

Section 4 CALIBRATION. . . . . . . . . . . . . . . . . .

4-1

Test Equipment Required

. . . . . . .

4-1

PART 1 PERFORMANCE

CHECK.

4-6

Trigger System Check. . . . . . . . . . . .

4-7

Horizontal System Check . . . . . . . . .

4-13

PART 2 ADJUSTMENT

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

4-20

Trigger System Adjustment.

........

4-21

Horizontal System Adjustment. . . . .

4-24

Section 5

MAINTENANCE.

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

5-1

Preventive

Maintenance.

. . . . . . . . .

5-1

Troubleshooting. . . . . . . . . . . . . . . . .

5-2

Corrective Maintenance

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

5-4

Section 6 OPTIONS. . . . . . . . . . . . . . . . . . . . . .

6-1

Section 7 REPLACEABLE ELECTRICAL PARTS

Section 8 DIAGRAMS AND CIRCUIT BOARD

DESCRIPTIONS

Section 9 REPLACEABLE MECHANICAL PARTS

7B53AJ7B53AN

LIST

ILLUSTRATIONS

Fig.

No.

2-1

2-2

2-3

2-4

2-5

2-6

2-7

2-8

2-9

2-10

2-11

2-12

2-13

2-14

2-15

2-16

3-1

3-2

3-3

3-4

3-5

3-6

3-7

3-8

3-9

4-1

Page

7B53A17B53AN Dual

Time

Base

........

viii

Location

release latch.

...........

2-1

Front-panel

controls

and connectors. .

2-2

Frequency

range

each

COUPLING

switch

position.

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

2-7

Effect

LEVEL

control

and

SLOPE

switch

CRT

display. . . . . . . . . . . . . . . . .

2-9

Composite

Time/Division

switch

.......

2-10

Area

graticule

used

for

accurate

time

measurements. . . . . . . . . . . . . . . . . .

2-11

Operation

Sweep

Magnifier.

.......

2-11

(A)

Intensified

Sweep display; (B) Delayed

Sweep

display

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

" 2-12

Typical

Mixed

Sweep

display

(DELAYTIME

MUL

T dial set

3.55)

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

2-12

DELAY

TIME

MUL

T dial. Reading

shown

3.55

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

2-12

Measuring

the

time

duration

between

points on a waveform. . . . . . . . . . . . .

2-15

Measuring

risetime

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

2-16

Measuring

time

difference

using delayed

sweep

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

" 2-17

Using delayed sweep

for

magnification.

2-18

Displaying

complex

signal using delayed

sweep. . . . . . . . . . . . . . . . . . . . . . . .

2-19

Measuring

pulse jitter.

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

2-20

7B53A17B53AN

Simplified

Block

Diagram. 3-2

Trigger

Preamp and

Input

Switching

Block

Diagram. . . . . . . . . . . . . . . . . . . . . .

3-5

Main

Trigger

Generator

Block

Diagram

(SN B210000 and up 7B53A only)

......

3-6

Main

Trigger

Generator

Block

Diagram

(SN B209999 and below).

...........

3-8

Main Sweep

Generator

Block

Diagram. 3-10

Delayed

Trigger

Generator

Block

Diagram

(SN B210000 and up 7B53A only)

......

3-13

Delayed

Trigger

Generator

Block

Diagram

(SN B209999 and below)

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

3-14

Delayed Sweep

Generator

Block

Diagram. 3-15

Horizontal

Preamp

Block

Diagram

.....

3-17

Location

Delayed Gate

Out

and Variable

Selector

mUlti-pin

connectors

.........

4-2

JUN

1980

Fig.

No. Page

4-2

4-3

4-4

4-5

Typical

delay

time

error

measurement.

4-16

Typical

Delay

Time

Error Figures

......

4-17

Allowable

Delay

Time

Error

..........

4-17

Typical

CRT

display

when

checking

sweep

length. . . . . . . . . . . . . . . . . . . . . . . .

4-25

4-6

5-1

5-2

Typical CRT

display

for

adjIIIstment of Dly'd

Sweep Start and

Dly'd

Sweep Stop. . .

4-26

Location

of pins on

interface

connector

5-3

Cam

Switch

Removal. . . . . . . . . . . . .

5-7

The

illustrations

Section

8 are

located

near

their

associated

diagrams

the

foldout

page.

8-1

Electrode

configuration

for

semiconductors

the

instrument.

8-2

Location

circuit

boards

the

7B53A17B54AN.

8-3 Partial

A1-lnterface

circuit

board

component

locator

(SN B090000 and up).

8-4 Partial A

1-lnterface

circuit

board

component

locator

(SN B089999 and

below).

8-5

A2-Source

Switch

circuit

board

8-6

8-7

8-8

8-9

8-10

8-11

8-12

8-13

8-14

component

locator.

A3-Coupling

Switch

circuit

board

component

locator.

Partial

A4-

Trigger

circuit

board

component

locator

7B53A

only

(SN B210000 and up).

Partial

A4-

Trigger

circuit

board

component

locator

(SN B209999 and

below).

Partial

A6-Sweep

circuit

board

component

locator

(SN B090000 and up).

Partial

A6-Sweep

circuit

board

component

locator

(SN B089999 and

below).

A5-Mode

Switch

circuit

board.

Partial

A4-

Trigger

circuit

board

component

locator

7B53A

only

(SN B210000 and up).

A7-Delayed

Trigger

Switch

circuit

board

com

ponent

locator.

Partial

A4-

Trigger

circuit

board

component

locator

(SN B209999 and

below).

iii

7B53A17B53AN

Fig.

No.

8-15

8-16

8-17

8-18

8-19

8-20

LIST

ILLUSTRATIONS

(cont)

Fig.

No.

Partial

A6-Sweep

circuit

board

component

locator

(SN 8090000 and up).

Partial

A6-Sweep

circuit

board

component

locator

(SN 8089999 and

below).

8-21

Partial

A6-Sweep

circuit

board

component

locator

(SN 8089999 and

below).

Partial

A1-lnterface

circuit

board

(7853A

only)

component

locator.

Partial

A1-lnterface

circuit

board

(7853AN

only)

com

ponent locator.

A8-Readout

circuit

board

(7853A

only)

component

locator.

8-22

8-23

8-24

Partial

A6-Sweep

circuit

board

component

locator

(SN 8090000 and up).

Location

adjustments

the

7853A17853AN (SN 8209999 and below).

Location

adjustments

the

7853A

(SN 8210000 and up).

8-25

Location

adjustments

the

7853A17853AN.

Partial

A6-Sweep

circuit

board

component

locator

(SN 8090000 and up).

LIST

TABLES

Table

No.

1-1

1-2

1-3

2-1

2-2

4-1

4-2

4-3

4-4

4-5

5-1

Page

Electrical

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

1-1

Environmental

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

1-6

Physical

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

1-6

Deflection

Factor of

the

X Signal

......

2-13

Risetime Measurements

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

2-16

Test

Equipment

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

4-3

Main Sweep

Timing

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

4-13

Delayed Sweep

Timing

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

4-14

Main Sweep

Magnifier

Accuracy

......

4-15

Delayed Sweep

Magnifier

Accuracy

....

4-15

Relative

Susceptibility

Static

Discharge

Damage

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

5-2

JUN

1980

OPERATORS

SAFETY

SUMMARY

The

general

safety

information

this

part

the

summary

for

both

operating

and

servicing

personnel.

Specific

warnings

and

cautions

will

found

throughout

the

manual

where

they

apply,

but

may

not

appear

this

summary.

TERMS

THIS

MANUAL

CAUTION

statements

identify

conditions

practices

that

could

result

damage

the

equipment

other

property.

WARNING

statements

identify

conditions

practices

that

could

result

personal

injury

loss of

life.

MARKED

EQUIPMENT

CAUTION

indicates

personal

injury

hazard

not

immediately

accessible

one

reads

the

marking,

a hazard to

property

including

the

equipment

itself.

DANGER

indicates

personal

injury

hazard

immediately

accessible

one

reads

the

marking.

SYMBOLS

THIS

MANUAL

Static-Sensitive Devices.

This

symbol

indicates

where

applicable

cautionary

other

information

found.

MARKED

EQUIPMENT

DANGER-High

voltage.

ffi_

'-:::=:)

Protective

ground

(earth)

terminal.

ATTENTION-refer

manual.

WARNINGS

POWER

SOURCE

This

product

intended

operate

in a

mainframe

connected

power

source

that

will

not

apply

than

250

volts

rms

between

the

supply

conductors

between

either

supply

conductor

and

ground.

protective

ground

connection

way

the

grounding

conductor

the

mainframe

power

cord

essential

for

safe

operation.

GROUNDING

THE

PRODUCT

This

product

grounded

through

the

grounding

conductor

the

mainframe

power

cord. To avoid

electrical

shock,

plug

the

mainframe

power

cord

into

properly

wired

receptacle

before

connecting

the

product

input

output

terminals.

protective

ground

connection

way

the

grounding

conductor

the

mainframe

power

cord

essential

for

safe

operation.

REV JAN 1985 v

7B53A17B53AN

DANGER

ARISING

FROM

LOSS OF

GROUND

Upon

loss of

the

protective-ground

connection,

all

accessible

conductive

parts

(including

knobs

and

controls

that

may

appear

insulating),

can

render

electric

shock.

NOT

OPERATE

EXPLOSIVE

ATMOSPHERES

avoid

explosion,

not

operate

this

product

atmosphere

explosive

gases

unless

has

been

specifically

certified

for

such

operation.

NOT

OPERATE

PLUG-IN

UNIT

WITHOUT

COVERS

avoid

personal

injury,

not

operate

this

product

without

covers

panels

installed.

not

apply

power

the

plug-in

unit

via a

plug-in

extender.

JUN

1980

7B53A17B53AN

SERVICING

SAFETY

SUMMARY

FOR QUALIFIED

SERVICE

PERSONNEL

ONLY

Refer

also to the preceding Operators

Safety

Summary

NOT

SERVICE

ALONE

not

perform

internal

service

adjustment

this

product

unless

another

person

capable

rendering

first

aid

and

resuscitation

present.

USE

CARE

WHEN

SERVICING

WITH

POWER

Dangerous

voltages

exist

several

points

this

product.

avoid

personal

injury.

not

touch

exposed

connections

and

components

while

power

is on.

Disconnect

power

before

removing

protective

panels.

soldering.

replacing

components.

POWER

SOURCE

This

product

intended

operate

mainframe

connected

power

source

that

will

not

apply

than

250

volts

rms

between

the

supply

conductors

between

either

supply

conductor

and

ground.

protective

ground

connection

way

the

grounding

conductor

the

mainframe

power

cord

essential

for

safe

operation.

JUN

1980 vii

7B53A/7B53AN

---

-• •

iii

-•

iii

• -.

---

1342

The 7B53

7B53AN Duat

Tlm

e Base.

viii

JUN

1980

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