Tektronix 7B52 Manuel utilisateur

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1

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ΙΝ

ST

RU

CTI

ΟΝ

ΜΑΝ

V

A

L

7

Β52

Serial

Nu

mber

DUAL

TIME

BASE

Tek

tro

n

ix,

Inc

.

*

Ρ

.

Ο

.

Box

500

"

B

eaverton,

Oregon

97005

"

Ph

one

644-0161

"

Cables

:

Te

k

tronix

070-1043-00



670

TABLE

OF

CONTENTS

Abbreviations

and

symbols

used

in

this

manual

are

based

on

or

taken

directly

from

IEEE

Standard

260

"Standard

Symbols

for

Units",

MIL

STD-12B

and

other

standards

of

the

electronics

industry

.

Change

information,

if

any,

is

located

at

the

rear

of

this

manual

.

71352

SECTION

1

SPECIFICATION

Page

Preventive

Maintenance

4-1

Introduction

1-1

General

4-1

Electrical

Characteristics

1-1

Cleaning

4-1

Main

Sweep

(Table

1-1)

1-1

Transistor

FET,

and

Integrated

Dly'd

Sweep

(Table

1-2)

1-1

Circuit

Checks

4-1

Triggering

(Table

1-3)

1-2

Recalibration

4-1

Mixed

Sweep,

Variable

Time

Delay

Troubleshooting

4-2

(Table

1-4)

1-2

Introduction

4-2

Amplifier

(Table

1-5)

1-3

Troubleshooting

Aids 4-2

Environmental

Characteristics

Troubleshooting

Equipment

4-3

(Table

1-6)

1-3

Troubleshooting

Techniques 4-3

Corrective

Maintenance

4-4

SECTION

2

OPERATING

INSTRUCTIONS

Obtaining

Replacement

Parts

4-4

Soldering

Techniques

4-5

General

2-1

Component

Replacement

4-5

Installation

2-1

Front

Panel

Controls

and

Connectors

2-2

SECTION5

PERFORMANCE

CHECK/CALIBRATION

Test

Set-up

Chart

2-9

First-Time

Operating

Instructions

2-9 Introduction 5-1

Sweep

Calibration

Check

2-9

Test

Equipment

Required

5-1

Simplified

First-Time

Operation 2-9 Short

Form

Procedure 5-2

General

5-5

SECTION3

CIRCUIT

DESCRIPTION

Procedure 5-5

Introduction

3-1

Simplified

Block

Diagram

3-1

SECTION

6

ELECTRICAL

PARTS

LIST

Main

Sweep

Mode

3-1

Abbreviations

and

Symbols

Delayed

Sweep

Mode

3-1

Parts

Ordering Information

Mixed

Sweep

Mode

3-3

Index

of

Electrical

Parts

List

External

Horiz Input

3-3

Circuit

Description

3-4

SECTION

7

DIAGRAMS

AND

MECHANICAL

PARTS

Introduction

3-4

ILLUSTRATIONS

Main

Trigger

Generator

3-5

Main

Sweep

Generator 3-7

Diagrams

Delayed

Trigger

Preamp

3-10

Mechanical

Parts

Illustrations

(on

Delayed

Trigger

Generator

3-11

reverse

side

of

Diagrams)

Delayed

Sweep

Generator

3-11

Horizontal

Preamp

3-13

SECTION

8

MECHANICAL

PARTS

LIST

Time/Div

Readout

Switching

3-14

Mechanical

Parts

List

Information

Index

of

Mechanical

Parts

Illustrations

SECTION4

MAINTENANCE

Mechanical

Parts

List

Introduction

4-1

Accessories

F

ig

.

1-1

.

7Β52

Du

al

Time

B

ase

.

Introduction

T

he 71352

D

u

al

Time

Base

is

designed

s

p

ecifically

for

use

wit

h

t

h

e

7503

In

d

icato

r

Oscilloscope

;

h

owever,

it

is

com-

p

ati

b

le

wit

h

all

7000-Series

Indicator

Oscillosco

p

es

.

T

he

71352

features

cali

b

rated

swee

p

s

from

5

s/div

to

50

n

s/

d

iv

(0

.5

s/

d

iv

to

5

n

s/

d

iv

wit

h

Χ

10

M

agnification), triggering

to

100

MHz,

an

d

fo

u

r

d

is

p

lay

mo

d

es

.

Ot

h

er

featu

r

es

incl

ude

lig

h

te

d

p

u

s

hbu

tto

n

switc

h

es,

0

to

10

times

continuou

s

sweep

d

elay,

brig

h

t

b

ase

line

in

A

U

TOmo

d

e

in

a

b

se

n

ce of

a

d

e

q

uate

triggering

signals,

an

dan

A

MPL

p

osition

fo

r

Χ

-

Υ

operation

.

Display

mo

d

es

i

n

clu

de

MAIN

S

WEEP,

I

NT

EN

SI

F

I

E

D

S

WEEP,

D

EL

AY

E

D

S

WEEP,

an

d

M

IX

E

D

S

WEEP

.

In

t

h

e

M

IX

E

D

mo

d

e,

t

h

e Main

Swee

p

is

d

is

p

laye

d

to

αp

oint

selec-

te

d

by

t

he

D

EL

AY

TIME

MUL

T,

after

w

h

ic

h

t

he

sweep

rate

is

determine

d

by

D

L

Y'D

S

WEEP

setti

ng

.

T

h

is

mo

d

e

p

ermits

sweep

magnificatio

n

of

any

p

oint

on

t

he

n

ormal

(

M

ain)

sweep

selected

by

t

he

D

EL

AY

TIME

M

UL

T

control

.

T

he Performance

C

h

eck

p

rocedure

given

in

Section

5

provi

d

es

α

convenient

met

h

od

of

c

h

ec

k

ing

p

erformance

of

t

h

is

instr

u

ment

.

T

he

followi

ng

electrical

ch

aracteristics

apply

over

α

calibration

i

n

terval

of

1000

h

ours

o

r

six

-

mo

n

t

h

s

(wh

ic

h

ever

occurs

first)

at

an

am

b

ient

temperatu

r

e

of

0

°

C

to

+50

°

C,

unless

oth

erwise

note

d

.

W

a r

mup

time

for

given

accuracy

is

20

minutes

.

T

he

instrument

m

u

st

be

operating

in

α

cali

b

rate

d

in

d

icator

oscillosco

p

e

for

given

accu

racy

.

ELE

CT

R

ICA

L

C

H

A

R

ACT

ER

ISTICS

MAIN

S

WP

E

lect

r

ical

C

ha

r

acteristics

Time

Interval

Ce

n

ter

8

Divisions

50

ms/Div

to

.5

μ

s/Div

Ch

ange

infor

mation,

if

any,

affecti

n

g

t

h

is

section

will

be

fou

n

d

at

t

h

e rear

of

t

h

is

manual

.

TA

BLE

1-1

Differential

Sweep



M

easured

in

7500-Series

Accuracy'

Ι

Oscillosco

p

e

'T

h e

term

"Diffe

r

en

tial

Sweep"

r

efe

rs

to

Sweep d

is

p

lay

meas

u

re

d

over

t

he

cente

r

8

divisions

of

t

h

e g r

atic

u

le

.

2

Meas

u

re

Mag

acc

ur

acies

betwee

n

fi

r

st

a

nd

ni

n

t

h

segme

n t

of

un-

magnified

sweep

.

S

E

CTIO

N

l

S

PE

CI

F

I

CA

ΤΙΟΝ

TA

BLE

1-1

(co

n

t)

TA

BLE

1-2

D

L

Y'D

S

W

Ρ

Elect

r

ical

Characteristics

Perfo

r

ma

n

ce

Re

qu

i

r

eme

n

t

M

easured

i

n

7500-Series

Oscilloscope

71352

Cha

r

acte

r

istic

Perfo

r

ma

n

ce

R

e

q

uirement

5

s/Div

to

3%

3

.5%

4% 5%

.1

s/Div

and

.2

μ

s/Div

to

.05

μ

s/Div

Any

two

Divi-

5%

of

7%

of

sions

with

in

Ce

n

-

meas

u

rement

measurement

ter

8

Divisions

Swee

p

R

ate

MAIN

Continuo

u

sly

varia

b

le

between

cali-

V

A

R

IA

BLE

R

ange

b

rate

d

sweep

rates

.

Exten

ds

sweep

rate

to

at least

12

.5

s/Div

.

Swee

p

L

engt

h

10

.4

Divisio

ns with

in

0

.3

Divisio

n

at

1

ms/Div

.

(Ad

j

uste

d

at

t

h

is

rate

.)

10

.0

to

13

.0

Divisio

ns

at

all

ot

h

er

swee

p

rates

.

Swee

pHold

off

Time

5

s/Div

to

1

times

t

h

e

ΤΙΜΕ

/DI

V

switc

h

10

μ

s/Div

setting

or

less

.

5

μ

s/Div

to

2

.5

μ

s

or

less

.05

μ

s/Div

N

ormal/

M

ag

W

it

h

i

n

0

.5

Division

.

R

egistration

Specification-7B52

C

ha

r

acteristic



Ι



Performance

R

equiremen

t

Any

two

Divi-

sions

wit

h

in

Cen-

ter

8

Divisions

C

h

aracteristic

Trigger

Sensitivity

Cou

p

li

n

g

3

Jitter

AC

DC

Single

Swee

p

(

M

ain

Only)

.5

s

/Div to

.1

s

/Div

and

.2

μ

s/Div

to

.05

μ

s

/Div

Internal

Trigger

TA

BLE

1-2

(cont)

10

.4

Divisions

with

in

0

.3

Divisio

n

at

1

ms/Div

.

10

.0

to

13

Divisions

at

all

oth

er

swee

p

rates

.

Determine

d

by

MAIN

SWP

TIME/

DI

V

switc

h

setti

ng

.

TA

BLE

1-3

Trigge

r

ing

Electrical

C

h

aracteristics

AC

LF

REJ

4

(

M

ain

Only)

AC

HF

REJ

(

M

ai

n

Only)

1

ns or

less

at

75

MHz

.

ment

mum

ηαΙ

υ

ice

d

Performance

R

eq

uire

Triggering

Frequency

R

ange

30 Hz-10

MHz

10

MH

z-100

MH

z

30

kH

z-10

MHz

150

kH

z-10

MH

z

10

MH

z-100

MH

z

30

Hz-50

kH

z

DC

-

10

MH

z

10

MH

z-100

MHz

M

ini

Sig

R

e

q

ΙΝΤ

0

.3

Div

1

.5

Div

0

.3

Div

1

.5

Div

0

.3

Div

0

.3

Div

1

.5

Div

Triggeri

n

g

re

qu

irements

same

as

M

ain

Swee

p

.

Wh

en

triggere

d

,

sweep

generator

p

ro

d

uces

1

swee

p

.

ΕΧΤ

150

m

V

750

m

V

150

m

V

750

m

V

150

m

V

150

mV

750

m

V

3

Οη

I

n

ter

n

al

T

r

iggeri

ng

Only,

t

he

s

p

ecifie

d upp

er

-3

d

B

f

r

equen

cy

of

the

Vertical

System

re

p

laces

any

f

r

e

qu

encies

i

n

t

h

e

ab

ove

ta

b

le

w

h

e n

t

h

e

numb

e

r

i

n

t

h

e

table

is

greater

t

ha

n

t

h

e upp

er

-3

dB

f

r

e

qu ency

of

t

he

i

n

d

icator

oscilloscope

V

e

r

tical

Am

p

lifier

.

4

W

ill

not

trigger

on

sine

waves

of

3

Divisions or

less

i

n

te rn

al,

or

1

.5

volts

exte

r

nal,

below

120

Hz

.

TA

BLE

1-3

(cont)

TA

BLE

1-4

M

ixe

d

Swee

p

,

V

ariable

Time

Delay

Electrical

C

h

a

r

acteristics

C

h

aracteristic

Performance

R

e

q

uirement

Exter

n

al

Trigger

Input

M

axim

um

I

n

p

ut

500

volts

(DC

p

l

u

s

p

ea

k

AC)

.

500

Voltage

volts

(pea

k

-to-

p

ea

k

AC

to

1

kH

z

or

less)

.

Input

R

esistance

1

mego

h

m

with

in

2°/

ο

.

In

pu

t

Ca

p

acitance

20

picofara

dwit

h

in

2

p

icofara

d

.

L

evel

R

ange

ΕΧΤ

At

least

+3

.5

volts

to

-3

.5

volts

.

ΕΧΤ

-

10

At

least

+35

volts

to

-35

volts

.

(

M

ai

n Only)

Auto

Brig

h

t

Base

L

ine

Swee

p

free-runs

in

ab

sence

of

tr

ig-

(

M

ain

Only)

gering

signal

in

AU

TO

.

C

h

aracteristic

Performance

R

equirement

Mixed

Swee

p

Swee

p

Accuracy

2°/

ο

p

lus

measure

d

MAIN

S

WP

error

.

Exclu

de

following

portions

of

M

ixe

d

Swee

p

;

first

0

.5

Divisio

n

s

of

M

ain

Swee

p

an

d0

.2

Division

or

0

.1

μ

s,

w

h

ic

h

ever

is

greater,

after

tran-

sition

of

Main

Sweep

to

Dly'd

Swee

p

.

Varia

b

le

Time

Delay

Differential

Delay

Accuracy

Center

8

Divi-

sions

5

s/Div

to

W

it

h

i

n

2°/

ο

1

s/Div

.5

s/Div

to

W

it

h

in

1%

1

μ

s/Div

Multi

p

lier

L

inearity

W

it

h

in

0

.2%

of

full

scale

(1

mi

n

or

d

ivision)

.

Jitter

1

p

a rt

or

less

in

20,000

of 10

times

t

he

TI

ΜΕ

/DI

V

switc

h

setti

n

g

.

TABLE

1-5

Am

p

lifier

Electrical

Characteristics

Transportation

Specification-71352

TABLE

1-6

ENVIRONMENTAL

C

HARACTERISTICS

T

his

instrument

will

meet

the

electrical

characteristics

given

over

the following

environmental

limits

.

C

haracteristic

Altitude

Non-Operating

P

erformance

R

e

quirement

To

50,000

feet

and

-55

°

C

.

Qualified

un

d

er

N

ational

Safe

Tran-

sit

Committee

test

p

roce

d

ure

1

Α

,

category

ΙΙ .

C

h

aracteristic

P

erformance

R

equirement

Deflection

F

actor

ΕΧΤ

,

Χ

10

M

AG

10

millivolts/division

within

10%

.

ΕΧΤ

100

millivolts/division

within

10%

.

ΕΧΤ

-

10

1

volt/

d

ivision

within

10%

.

F

re

q

uency

R

es

p

onse

System

-3

dB

p

oints

in

75-Series

Oscilloscope

L

ower

-3

dB

Up

p

er

-3

d

B

AC

40

H

z 2

MHz

AC

LF

REJ

16

kHz

2

MHz

ACHF

REJ

40

H

z

100

kHz

DC DC

2

MHz

General

T

h

e

71352

Dual

Ti

m

e

Base

U

nit

is

designe

d

s

p

ecifically

for

use

wit

h

Te

ktronix

7500-Series

I

nd

icator

Oscillosco

p

es

having

one

h

orizontal

p

lug-in

com

p

artment

;

h

owever,

it

is

compati

b

le

wit

h

all

Te

ktronix

7000-Series

In

d

icator

Oscillosco

p

es

.

To

effectively

use

t

he

71352,

its

o

p

eratio

n

and

ca

p

abilities

s

hould

be

k

nown

.

T

h

is

section d

escribes

t

h

e

o

p

eration of

t

he

front-

p

anel

controls,

gives first-time

an

d

general

o

p

erating

information,

lists

someb

asic

a

pp

lications

and

tells

h

ow

to

ma

k

e

t h e

instrument

co

mp

ati

b

le

with

all

7000-Series

oscillosco

p

es

.

Installation

T

h

e

71352

is

designe

d

to

o

p

erate

in

t

h

e

h

orizontal

p

lug-in

comp

artment

of

t

he

oscillosco

p

e

.

T

he

71352

can

also

be

installe

d

in

α

vertical

p

lug-in

co

mp

artment

to

p

rovi

d

e

α

swee

p

t

h

at

runs

vertically

on

t

h

e

C

R

T

.

H

owever,

w

hen

use

d

in t

h

is

manner,

t

here

is

no

retrace

blank

ing

or

internal

trig-

gering

p

rovisions,

an

d

t

h

e

unit

may

not

meet

t

he

s

p

ecifica-

tions

gi

v

en

in

Section

1

.

T

h

e

instructions

in t

h

is

manual

are

written for use of

t

h

e

71352

in t

h

e

horizo

n

tal

p

lug-in

comp

artment

.

Before procee

d

ing

w

it

h

installation,

it is

necessary

to

set

two

internal

71352

switc

hes

w

h

ic

h

p

rovide pro

p

er

triggering

SECTION

2

O

P

E

R

A

TI

N

G

I

N

ST

RU

CTIO

N

S

C

h

ange

info

r

mation,

if

any,

affecting

t

h

is

section

will

be

found

at

t

h

e

r

ear

of

t

h

is

manual

.

F

ig

.

2-1

.

L

ocation

of

DE

L

AY

E

D

T R

IGG

ER

SO

UR

C

E

and

MAIN-

FRAME

D

EL

AYI

N

G

M

OD

E

switc

h

es

.

signals

from

wit

h in

or

to

t

he

in

d

icator

oscillosco

p

e

main-

frame

.

T

he

D

EL

AY

E

D

T

RIGG

ER SO

UR

C

E

and

MAIN-

FRAME

D

EL

AYI

NG M

OD

E switch

es

p

erform

t

h

ese

functions

;

see

F

ig

.

2-1

.

Table

2-1

lists t

h

e

SOUR

C

E

an

d

M

OD

E

switc

h

p

ositions

for

using

t

h

e

71352

in

any

7000-Series

Indicator Oscillosco

p

e

.

TA

BLE

2-1

I

wwttc

h

m

ust

be

in

t

h

is

p

osition

to obtain

intensified

sweep

.

71352

2

Fun

ctio

n

al

only

wh

e

n

71352

is

place

d

in

Α

H

O

R

IZ

compartme

n

t

of

7504

or

7704

.

In

d

icator

Oscillosco

p

e

an

d

H

orizontal

Plug-in

Com

p

artment

U

se

d

Switc

h

7503

7504-7704 7504-7704

P

osition

Α

H

O

R

IZ

Β

H

O

R

IZ

D

EL

AY

E

D

T

RIGG

ER

SO

UR

CE

MAIN

H

orizontal

Α

H

orizontal

ΒH

orizontal

Trig Selector Trig

Selector

Trig

Selector

A

U

X

L

eft

V

ertical

Β

H

orizo

n

tal

Α

H

orizontal

Signal

Trig

Selector

Trig

Selector

MAIN-

FRAME

D

EL

AYI

NG

M

OD

E

In

d

e

p

en

d

ent

N

ormal

N

ormal

N

ormal

(

R

ear)

Ru

ns

After

------

Delaying

Sw

p

------

(Center

)2

(

Β

H

orizontal

R

uns

After

Delay

Interval)

Triggerable

------

Delaying

Sw

p

------

After

(

F

ront)

2

(

Β

H

orizontal

Triggerable

After

Delay

Interval)

O

p

erating

Instructions-71352

To

install

t

he 71352

into

α

plug-in

com

p

artme

n

t,

push

it

in

until

it

fits

firmly

into

t

he

com

p

artment

.

To

remove,

pull

t

he

release

latc

h

(see

F

ig

.

2-2)

to d

isengage

t

he unit

from

t

he

in

d

icator

oscillosco

p

e

an

d

pull

it

out

of

t

hep

lug-in

com

p

artment

.

E

ven

t

h

oug

h

t

heh

orizontal

gain

of

t

h

ein

d

i-

cator

oscillosco

pe

is

stan

d

ar

d

ize

d

to

minimize

a

d

j

ustment

w

hen

inserting

p

lug-ins,

t

he

swee

p

calibratio

nof

t

he

71352

sh

oul

d

be

ch

ec

ked

.

T

heprocedure

for

ch

ec

k

ing

t

he unit

is

given

under

Swee

p

Calibratio

n

C

hec

k

i

n

t

he

F

irst-Time

O

p

erating

Instructions

of

t

h

is

section

.

F

ig

.

2-2

.

L

ocatio

n

of

release

latc

h

.

FR

O

N

T-

P

A

NEL

CO

NTR

O

LS

an

d

CO

NNE

CTO

RS

General

All

controls

require

dfor

t

he o

p

eration of

t

h

e

7

Β

52

are

locate

d

on

th

efront

p

anel

of

t

he unit

(see

F

ig

.

2-3)

wit

h

t

he

exce

p

tion

of

t

h

e

internal

D

EL

AY

E

D T

RIGG

ER

SO

UR

CE

an

d

MAIN-FRAME

D

EL

AYI

N

GM

OD

Eswitches

.

Toma

k

efull

use of

t

h

e

ca

p

ab

ilities

of

t

h

is

instrument,

the

o

p

erator

s

h

o

u

l

d

be

familiar

with

t

he

function

and

use of

eac

hof

t

hese controls

.

Α

d

etailed

descri

p

tion

of

t

he

front-

p

anel

controls and

connectors

is

given h

ere

.

M

ain

Triggering

Controls

LEVEL

/S

L

O

PE

2-2

T

he

LEVEL

/S

L

O

PE

control d

eter-

mines

w

h

et

her

t

he

trigger circuit

responds

on

t

h

e

p

ositive-going

or

negative-going

portion

of

t

he

trigger

signal

.

Wh

en

t

h

e

indicator

line

on

t

he outer

ring

of

t

h

e

LEVEL

/

S

L

O

PE

control

is

to

th

e

left

of

center,

t

h

e

d

is

p

lay

starts

on

t

he

p

ositive-going

portion of

t

he

wave-

form

(notice

p

ositive-going

wave-

form

symbol

to

left

of

control)

.

To



TR

IG'D

L

A

MP

t

h

e rig

h

t

of

center,

t

he

dis

p

lay

starts

on

t

he

negative-going

p

ortion

of

the

waveform

(notice

negative-

going

waveform

symbol)

.

Wh

en

several

cycles

of

α

signal

app

ear

in

t

he

dis

p

lay,

t

he

selection

of

t

h

e

trigger

slo

p

e

is

often

unim

portant

.

H

owever,

if

only

α

certain

p

ortio

n

of αcycle

is

to

be

d

is

p

layed,

correct

setting

of

t

h

e

LEVEL

/S

L

O

PE

con-

trol

is

im

portant to

p

rovi

de

α

dis-

play

w

h

ic

h

starts

on

t

hed

esire

d

slo

pe of

the in

p

ut signal

.

T

he

LEVEL

/S

L

O

PE

control

deter-

mines

t

he

voltage

level

on

t

he

trig-

ger signal

at

w

h

ic

h

t

he

dis

p

lay

is

triggered,

as

well as

selecting

t

he

trigger

slo

pe

.

T

h

e

center

k

no

bof

t

h

e

LEVEL

/SL

O

PE

control

p

ro-

vi

des

about

α

3

:1

re

d

uction

in

rela-

tion

to

t

h

e

outer

in

d

icator

ring,

to

allow

p

recise

level

selection

.

T

h

is

control

can

also

be

turne

d

t

h

roug

h

-

out

t

he

com

p

lete

360

°

rotation

to

allow contin

uous

triggering

over

t

he

selecte

d

slo

p

e

.

Wh

en

t

h

e

LEVEL

/

SL

O

PE

control

is

set

to

t

he

line

on

eit

h

er

t

hep

ositive-going

or nega-

tive-going

waveform

sym

b

ol

t

he

swee

p

is

triggere

d

near

t

h

e

zero-volt

level

of

t

he

trigger

signal

(AC

cou

p

le

d

only)

.

As

t

he

LEVEL

/

S

L

O

PE

control

is

rotate

d

away

from

t

h

e

zero

line,

t

h

e

d

is

p

laye

d

waveform

starts at

α

point

corre-

s

p

ond

ing

to

t

he

p

osition

of

t

he

in

d

icator

line

on

t

h

e

associate

d

slo pe

waveform

symbol

.

For

exam

p

le,

if

t

he

LEVEL

/S

L

O

PE

control

is

turned

clockwise

from

t

he zero

line

on

t

hep

ositive-going

slo

pe

symbol,

t

hed

is

played

wave-

form

starts at

α

morep

ositive

level

.

B

efore

setting

t

h

e

triggering

level,

select

t

he

T

RIGG

ER

I

N

G

M

OD

E

,

CO

UPL

I

N

G

an

d

SO

UR

CE

.

T

h

en

ad

j

ust

t

he

LEVEL

/SL

O

PE

control so

t

hed

is

p

laye

d

waveform

starts at

t

he

desire

d point

.

T

h

e trig-

gering

slo

pe

can

be c

h

ange

d

at

any

time by

rotating

t

h

e

LEVEL

/

SL

O

PE

control

to

t

h

e

corre-

sp

on

ding p

oint

on

th

e

ot

h

er slope

waveform

symbol

.

The

TR

IG'D

lam

p

provides α

con-

venient

in

d

ication

of

t

he

condition

of

t

h

e

trigger

circuits

.

If

t

h

e

MAIN

TR

IGG

ER

I

NG

M

OD

E

,

CO

U

-

PL

I

N

G, an

d

SO

UR

CE

switc

h

es

are

correctly

set

an

d

α

suitable

trigger

signal

is

a

pp

lie

d

,

t h

e

T

R

IG'D

lam

p

is

on

.

U

n

d

er

certain

con

d

itions,

t

h

e

T

R

IG'D

lam

pmay

be

off, in

d

i-

cating

t

h

at

t

h

e

swee

p

is

not

trig-

gered

.

T

h

e

cause

mig

h

t

be

α

mis-

ad

j

ustment

of

t

he

LEVEL

/S

L

O

PE

control,

incorrectly

set

CO

UPL

I

NG

or

SO

UR

C

E switch

es,

low

trigger

MAIN

TRt

Γ

,

Γ

,f

:

R

I

NG

C,

ON'

ί

P

,

Ω

IS

Ω

tε;{

`

t- Ι!

Υ

"ι

'?

Q

ς

:ιF

_

(

:

ΠΝΤ

R

Πι

S

OF

LAY

Γ)

ΝΤί3

Π

γ

.



...

.~

.

C

.

αι

:e~

.

α

.

Τιπ

1

Ε

;D

Ι

V o

t

τ

DU

Y

TIME

F

ig

.

2-3

.

F ro

n

t-

Pa

n

el

co

n

trols

a n

d

conn

ectors

.

Operating

Instructions-711352

signal

am

p

litu

d

e,

or α

trigger

signal

re

p

etition

rate

outside

t

h

e

acce

p

t-

able

fre

q

uency

range

.

T

h

is

feature

can

be

use

d

as

α

general

indication

of

correct

triggering

.

It

is

p

artic-

ularly useful

w

hen

setting

up

t

he

trigger

circuits

w

hen

α

trigger

signal

is

available

wit

h

out

α

dis

p

lay

on

t

h

e

CRT

.

It

also

indicates

t

h

at

t

h

is

unit

is

correctly

triggere

d

w

h

en

o

p

er-

ating

as

α

D

L

Y'D

S

WEEP

.

lil

Υ

Π

TM

,i

;I

N

i,

GC),

.

.

:1

esζ

jL

~,

INPUT

CONNECTORS

2-

3

Ope

r

ating

Instructions-71352

M

OD

E

2-

4

A

U

TO

N

O

RM

T

he pu

s

hb

uttons

locate

dund

er

the

M

OD

E

title

select

t

he

mode

i

n

w

h

ic

h

t

he sweep

is

triggere

d

.

T

he

selected

mo

d

e

i

n

w

h

ic

h

t

he swee

p

is

triggered

.

T

he

selected

mo

de

is

i

n

di-

cate

d

by

α

lig

h

te

d

p

u

s

hb

utton

.

Wh

en

t

he

AU

TO

p

us

hb

utto

n

is

illumi

n

ated,

α

triggere

d d

isplay

is

p

rese

n

te

d

with

t

h

e

correct

setti

ng

of

t

h

e

LEVEL

/S

L

O

PE

control

w

heneve

r

an a

d

e

qu

ate

trigger

sig

n

al

is

a

pp

lied

.

T

he

ra

n

ge of

t

he

LEVEL

/S

L

O

PE

control

i

n

t

h

is

mo

de

is

±8

vertical

divisio

n

s

.

T

h

e

TR

IG'D

lig

h

t

i

n

d

icates

w

hen

t

h

e

d

isplay

is

triggere

d

.

Wh

en

t

h

e

trigger

repetition

rate

is

below

abo

u t

30

h

ertz

(or

outsi

d

e

t

he

freque

ncy

range

selecte

d

by

t

h

e

CO

UPL

I

N

G

switc

h

)

or

w

hen

t

he

trigger

signal

is

i

n

a

de

q

u

ate,

t

he

sweep

free-ru

n

s

at

t

he

swee

p

rate

in

d

icate

d

b

y

t

h

e

ΤΙΜΕ

/DIV

or

DL

'

Υ

TIME

switc

h

to

produce α

refere

n

ce

trace

(T

R

IG'D

lig

h

t

off)

.

Wh

en an adeq

uate

trigger

signal

is

again

a

pp

lie

d

,

t

he

free-r

unn

ing

con-

dition

en

d

s

and α

trigge

r

ed d

isplay

is

p

roese

n

ted

.

Wh

en

t

h

e

LEVEL

/

SL

O

PE

co

n

trol

is

at

α

setting

o

u

t-

si

de the

am

p

litude

range

of

t

h

e

t

r

igger

sig

n

al,

t

h

e

swee

p

also

free-

runs

at

t

he

sweep

rate

in

d

icate

dby

t

he

ΤΙΜΕ

/DI

V

or

DL'Y

TIME

switc

h

.

T

h

is

type

of

free-r

u

nni

n

g

dis

p

lay

can

be

u

sef

u

l

to

measure

only

t

h

e

maximum

peak

-to-pea

k

am

p

litu

de

of

α

sig

n

al

without ob

-

serving

t

he

waves

hap

e

(suc

h

as in

ban

d

width

measurements)

.

Wh

en

the

N

O

RM

p

us

hbu

tton

is

p

ressed,

α

triggere

d

d

isplay

is

p

re-

se

n

te

d wit

h

t

he

correct

setting

of

t

he

LEVEL

/S

L

O

PE

con

trol

w

h

en-

ever

an adeq

uate

trigger

signal

is

ap

p

lied

.

T

he

range

of

t

he

LEVEL

/

SL

O

PE

control

in

t

h

is

mo

d

e

is

±8

vertical

d

ivisions

.

Th

e

TR

IG'D

lig

h

t

in

d

icates

w

h

en

t

h

e

d

is

p

lay

is

trig-

gere

d

.

T

h

e

N

O

RM

trigger

mo

d

e

must

be

u

se

d

to

p

ro

duce

triggered

d

is

p

lays

with

trigger

repetitio

n

rates

below

SI

NG

LE

S

WP

30

h

ertz

.

Wh

en the

LEVEL

/S

L

O

PE

con

trol

is

at

α

setting

o

u

tsi

de the

amplit

ude

range

of

t

he

trigger

sig-

nal,

w

hen

t

h

e

trigge

r

repeition

rate

is

ou

tsi

de the

fre

quency

ra

n

ge

selecte

d

by

t

he

CO

UPL

I

N

G

switc

h

,

or

w

hen

t

h

e

trigger

signal

is

i

na

d

e-

q

u

ate,

t

h

ere

is

no

trace

(T

R

IG'D

lig

h

t

is

off)

.

Non-repetitive,

ran

d

om

signals

can

be

d

is

p

layed

i

n

t

h

e

single-sweep

mo

de

b

y

first

obtaining

t

he

b

est

p

ossi

b

le

d

is

p

lay

in

t

he N

O

RM

M

OD

E

with α

sig

n

al

w

h

ic

h

is

a

b

out

the

same

am

p

litu

d

e

a

nd

fre

q

uen

cy

as

t

he

random

signal

.

T

hen with

o

u

t

ch

angi

ng

t

h

e

ot

h

er

T

R

IGG

ER

I

N

G

controls,

press

t

he

SI

N

G

LE

S

WP

p

us

hbutton

.

Wh

en

ready

for

t

h

e

ran

d

om

sig

n

al,

p

ress

t

he

RE

S

ET-

RE

ADY

pu

s

hbu

tton

.

T

he

RE

S

ET-

RE

ADY

pus

hb

utton

remains

lig

h

ted

to

i

nd

icate

t

h

at

t

h

e

u

n

it

h

as

b

een

reset

a

nd

is

rea

dy

to pr

o

duce

α

sweep

.

T

he

lig

h

t

goes

ou

t

after

t

h

e

ra

n

dom

signal

triggers

t

h

e

u

nit

.

To

p

re

pa

r

e

t

he

unit

fo

ra

n

ot

h

er single-

sweep

dis

p

lay,

p

r

ess

t

he

RE

S

ET-

RE

ADY

pu

s

hbu

tton

agai

n

.

Wh

en

u

sing

t

h

e

si

n

gle-swee

p

mo

d

e

to

ph

otogra

ph

waveforms,

t

h

e

grati-

cule

must

be ph

otogra

phed

sepa-

rately

i

n

t

he normal

manner

to

preve

n

t

over-exposi

ng

t

he

film

.

B

e

sure

t

h

e

camera

system

is

well pro-

tecte

d

agai

n

st

stray

lig

h

t,

or

operate

t

he

system

in

α

d

ar

ken

e

d

room

.

F

o

r

r

epetitive

wavefo

r

ms,

p

ress

t

h

e

RE

S

ET-

RE

ADY

p

us

hb

utto

n

only

once

for

each

waveform

un

less

t

h

e

signal

is

com

p

letely

symmet

r

ical

.

Ot

h

erwise,

multi

p

le

waveforms

may

a

p

pear

on

t

he

film

.

F

o

r

ra

n

dom

sig

n

als,

the

came

r a

le

ns can be

left

o

p

en

until

t

h

e

ra

nd

om

signal

trig-

gers

t

he

unit

(

RE

S

E

T-

RE

ADY

p

us

hbu

tton

lig

h

te

d

)

.

Fu

rt

h

er

i

n

for-

mation

on ph

otograp

h

ic

tec

h

ni

qu

es

is

given

in

t

h

e

camera

instruction

ma

n

ual

.

Wh

en

t

he

signal

to

be

d

is

p

layed

is

not

re

p

etitive

or

varies

in

am

p

li-

t

u

d

e,

waves

h

ape

or

re

p

etition

rate,

αcon

ventional

repetitive

type

dis-

play

may

p

ro

duce

an

un

sta

b

le

pre-