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TEKTRO

N

IX®

7

B

53A/7B53AN

DUAL

TIME

BASE

OPERATORS

INSTRUCTION

MANUAL

Tektronix,

Inc.

070-1252-00

P.O.

Box

500

Beaverton,

Oregon

97005

772

WARRANTY

Ait

T

E

KTRONIX

instru ents are warranted

against

defective aterials and

w

o

r

k anship

for one

year.

Any

questions

with

respect to

the

warrant

y should be

taken

up

with your

TEKTRONIX

Field

Engine

eer or representative.

A

ll r

equests

for

repairs and

replace ent

parts

should

b

e

directed

to

the

TEKTRONIX Fiield Office or representati

ve

in

your

area

.

This

will

assure

you

the fastest

possible

service. Please

include

the

instru ent

Type

Nu ber

or

Part

Nu ber

and

Serial

Nu ber

with

all

request

s for parts or service.

Specification

s

and

price

change

privileges

reserved.

Copyright

©

1972

by

Tektronix,

Inc.,

Beaverton,

Oregon.

Printed

in

the

United

States

of

A erica.

All

rights

reserved.

Contents

of

this

publication

ay

not

be

reproduced

in

any

for

without

per ission

of

Tektronix,

Inc.

U.S.A,

an

d

foreign

TEKTRONIX

products

covered

by

U.S.

and

foreign

patents

and/or

patents

pending.

TEKTRONIX

is

a

registered

trade ark

of

Tektronix,

Inc.

7B53A/7B53AN

Operators

TABLE

OF

CONTENTS

Page

SECTION

I

OPERATING

INSTRUCTIONS

Page

SECTION

I

OPERATING

INSTRUCTIONS

(cont)

7B53A/7B53AN

Features

1-1

General

1-1

Installation

1-1

Controls

and

Connectors

1

-3

Main

Triggering

Controls

1-3

Sweep

Controls

1-4

Delay

Ti e

Control

1-4

Delayed

Triggering

Controls

1-4

Input/Output

Connectors

1-4

Operating

Checkout

1-4

Introduction

1-4

Setup

Procedure

1-4

Sweep

Control

Functions

1-5

Sweep

Calibration

(front-panel)

1-5

Main

and

Delayed

Triggering

Functions

1-6

General

Operating

Instructions

1-7

Pushbutton

Switch

Logic

1-7

Triggered

Light

1-7

Main

Trigger

Mode

1-7

Main

Triggering

Coupling

1-8

Main

Triggering

Source

1-9

Trigger

Slope

1-9

Trigger

Level

1-11

Selecting

Sweep

Rates

1-11

Ti e

Measure ent

1-12

Sweep

Magnifier

1-12

Display

Modes

1-13

Delay

Ti e

Multiplier

1-13

Delayed

Sweep

Triggering

1-14

Input/Output

Connectors

1-14

X-Y

Operation

1-14

Mainfra e

Operating

Modes

1-15

Applications

1-15

General

1-15

Co parison

Measure ent

Techniques

1-15

Ti e

Duration

Measure ents

1-16

Deter ining

Frequency

1-16

Riseti e

Measure ents

1-17

Delayed

Sweep

Measure ents

1-18

Delayed

Sweep

Magnification

1-18

Triggered

Delayed

Sweep

Magnification

1-20

Displaying

Co plex

Signals

Using

Delayed

Sweep

1-20

Pulse

Jitter

Measure ents

1-21

SECTION

II

SPECIFICATION

Table

2-1,

Electrical

2-1

Main

Sweep

2-1

Delayed

Sweep

2-1

Mixed

Sweep,

Variable

Ti e

Delay

2-2

A plifier

2-2

Main

Triggering

2-3

Delayed

Triggering

2-4

Output

Signals

2-4

Table

2-2,

Environ ental

2-5

Table

2-3,

Physical

2-5

NOTE

Refer

to

the

7B53A/7B53AN

Service

Manual

for

circuit

description,

maintenance,

cali ration,

diagrams,

and

parts

replacement

information.

Fig.

1-1.

7B53A

and

7B53AN

Dual

Ti e

Base

Units.

7B53A/7B53AN

Operators

Section

1-7B53A/7B53AN

OPERATING

INSTRUCTIONS

7B53A/7B53AN

Feat res

The

7B53A

and

7B53AN

D al

Time

Base

nits

provide

Main,

Intensified,

Delayed,

and

Mixed

sweep

operation

for

TEKTRONIX

7000Series

Oscilloscopes.

Calibrated

sweep

rates

from

5

s/DIV

to

50

ns/DIV

(5

nanoseconds

with

X10

magnification)

and

triggering

to

100

megahertz

are

provided.

The

7B53A

and

7B53AN

are

electrically

identical

except

that

only

the

7B53A

is

compatible

with

the

alphan meric

reado t

system

provided

for

7000-Series

Oscilloscopes.

Before

proceeding

with

installation

it

is

necessary

to

check

the

settings

of

the

Variable

Selector

m lti-pin

connector

(P140)

and

the

Delayed

Sweep

Gate

O t

m lti-pin

connector

(P613).

The

Variable

Selector

m lti



pin

connector

(P140)

determines

whether

the

front-panel

VARIABLE

control

varies

main

sweep

rates,

delayed

sweep

rates,

or

main

sweep

holdoff;

the

Delayed

Sweep)

Gate

O t

m lti-pin

connector

(P613)

determines

whether

the

Delayed

Sweep

Gate

O t

signal

is

connected

to

the

front-panel

DLY'D

TRIG

IN

connector

(see

Fig.

1-3).

Refer

to

General

Operating

Instr ctions

in

this

section

for

VARIABLE

control

and

DLY'D

GATE

OUT

information.

Other

feat res

incl de

0

to

10

times

contin o s

sweep

delay,

variable

main

and

delayed

sweep

rates,

and

variable

main

sweep

holdoff.

Separate

triggering

controls

are

provided

for

main

and

delayed

sweep

triggering,

and

when

operating

in

the

AUTO

MAIN

TRIGGERING

MODE,

a

bright

base

line

is

displayed

in

the

absence

of

a

trigger

signal.

The

7B53A/7B53AN

can

also

be

sed

as

an

amplifier

for

X-Y

operation.

To

install

the

7B53A/7B53AN

in

a

pl g-in

compart



ment,

p sh

it

in

ntil

it

fits

firmly

into

the

compartment.

The

front

panel

of

the

7B53A/7B53AN

sho ld

be

fl sh

with

the

front

panel

of

the

indicator

oscilloscope.

Even

tho gh

the

gain

of

the

indicator

oscilloscope

is

standardized

to

minimize

adj stment

when

inserting

pl g-in

nits,

the

sweep

calibration

of

the

7B53A/7B53AN

sho ld

be

checked

when

installed.

The

proced re

for

checking

the

nit

is

given

nder

Sweep

Calibration

in

the

Operating

Checko t

proced re

in

this

section.

General

The

7B53A/7B53AN

operates

with

a

TEKTRONIX

7000-Series

Oscilloscope

and

a

7A-Series

Amplifier

nit

to

form

a

complete

oscilloscope

system.

To

effectively

se

the

7B53A/7B53AN

its

operation

and

capabilities

sho ld

be

known.

This

section

describes

the

operation

of

the

front



panel

controls

and

connectors,

provides

an

Operating

Checko t

proced re,

gives

general

operating

information,

and

basic

applications

for

this

instr ment.

Installation

The

7B53A/7B53AN

is

designed

to

operate

in

the

horizontal

compartment

of

the

indicator

oscilloscope.

This

instr ment

can

also

be

installed

in

the

Vertical

pl g-in

compartment

to

provide

a

sweep

that

r ns

vertically

on

the

CRT.

However,

when

sed

in

this

manner,

there

are

no

retrace

blanking

or

internal

triggering

provisions,

and

the

nit

may

not

meet

the

specifications

given

in

Section

2.

The

instr ctions

in

this

man al

are

written

for

se

of

the

7B53A/7B53AN

in

the

horizontal

pl g-in

compartment.

To

remove

the

7B53A/7B53AN,

p ll

the

release

latch

(see

Fig.

1-2)

to

disengage

the

nit

from

the

indicator

oscilloscope

and

p ll

it

o t

of

the

pl g-in

compartment.

Fig.

1-2.

Location

of

release

latch.

1-1

Operating

Instructions

—

7B53A/7B53AN

Operators

Variable

Selector

Connector

(P140)

Right

Side

Of

Instru ent

Variable

Delayed

Sweep

Rates

Variable

Main

Sweep

Rates

Variable

Main

Sweep

Holdoff

Delayed

Gate

Out

Connector

(P613)

Delayed

Gate

Out

Signal

Connected

.

to

DLY'D

TRIG

IN

Connector

Connector

(P613)

Left

Side

Of

Instru ent

Fig.

1-3.

Location

of

Delayed

Gate

Out

and

Variable

Selector

ulti-pin

connectors.

REV.

APR

1974

®I

1-2

Operating

Instructions

—

7B53A/7B53AN

Operators

Fig.

1-4.

Front-panel

controls

and

connectors.

CONTROLS

AND

CONNECTORS

General

All

controls

req ired

for

the

operation

of

the

7B53A/

7B53AN,

except

the

Variable

Selector

and

the

Dly'd

Sweep

Gate

O t

connector

(see

Fig.

1-3),

are

located

on

the

front

panel

of

the

instr ment.

To

make

f ll

se

of

the

capabilities

of

this

instr ment,

the

operator

sho ld

be

familiar

with

the

f nction

and

se

of

each

control.

A

brief

description

of

the

front-panel

controls

and

connectors

is

given

here.

More

detailed

information

is

given

nder

General

Operating

Information.

Fig.

1-4

shows

the

front

panel

and

external

controls

and

connectors

of

the

7B53A/7B53AN.

SLOPE.

Two-position

switch

permits

triggering

on

the

positive-going

or

negative-going

portion

of

the

main

trig



gering

signal.

TRIG'D.

Light

indicates

that

the

main

sweep

is

triggered

and

will

prod ce

a

display.

MODE.

P shb tton

switches

select

the

operating

mode

for

the

main

triggering

circ its.

COUPLING.

P shb tton

switches

select

the

method

of

co pling

the

triggering

signal

to

the

main

triggering

circ its.

1.

Main

Triggering

Controls

LEVEL.

Selects

the

amplit de

point

on

the

trigger

signal

where

sweep

triggering

occ rs.

SOURCE.

P shb tton

switches

select

the

so rce

of

the

main

triggering

signal.

13

Operating

Instructions

—

7B53A/7B53AN

Operators

2.

Sweep

Controls

TIME/DIV

OR

DLY

TIME.

Selects

the

sweep

rate

of

the

main

sweep

generator

(see

Fig.

1-7).

DLY'D

Time/Division.

Selects

the

sweep

rate

of

the

delayed

sweep

generator

and

selects

the

MAIN

SWP,

INTEN,

and

DLY'D

SWP

Display

Modes

(see

Fig.

1-7).

VARIABLE.

Provides

contin o sly

variable

main

sweep

rates,

contin o sly

variable

delayed

sweep

rates,

or

variable

main

sweep

holdoff;

depending

on

the

setting

of

the

Variable

Selector

m lti-pin

connector

(P140).

The

VARI



ABLE

control

also

selects

the

MIXED

Display

Mode

(see

Fig.

1-3,

Fig.

1-7).

SWP

CAL.

Screwdriver

adj stment

to

match

the

gain

of

the

7B53A/7B53AN

to

the

indicator

oscilloscope

for

calibrated

sweep

rates.

POSITION.

Controls

horizontal

position

of

display.

FINE.

Provides

precise

control

of

horizontal

position

adj stment.

MAG.

P shb tton

switch

selects

X1

or

X10

horizontal

magnification.

3.

Delay

Time

Control

DELAY

TIME

MULT.

Provides

variable

sweep

delay

between

0.00

and

10.0

times

the

delay

time

indicated

by

the

TIME/DIV

OR

DLY

TIME

switch.

4.

Delayed

Triggering

Controls

LEVEL.

Selects

the

RUNS

AFTER

DLY

TIME

or

Triggerable

After

Dly

Time

Modes,

and

the

amplit de

point

at

which

the

delayed

sweep

is

triggered.

SLOPE.

Two-position

switch

permits

triggering

on

the

positive-going

or

negative-going

portion

of

the

delayed

triggering

signal.

COUPLING.

Two-position

switch

selects

the

method

of

co pling

the

triggering

signal

to

the

delayed

triggering

circ its.

SOURCE.

Two-position

switch

to

select

the

so rce

of

the

delayed

triggering

signal.

5.

Inp t/O tp t

Connectors

MAIN

TRIG

IN

OR

AMP

IN.

Front-panel

BNC

connec



tor

serving

as

an

external

trigger

inp t

for

the

main

triggering

circ it

or

as

an

external

horizontal

inp t,

depending

pon

the

setting

of

the

TIME/DIV

OR

DLY

TIME

switch

and

the

MAIN

TRIGGERING

SOURCE

switch.

DLY'D

TRIG

IN.

Front-panel

BNC

connector

serving

as

an

external

trigger

inp t

for

the

delayed

triggering

circ its

or

as

a

delayed

sweep

gate

o tp t;

depending

pon

the

DLY'D

TRIG

SOURCE

switch,

the

position

of

P613,

and

the

DISPLAY

MODE.

OPERATING

CHECKOUT

Introd ction

The

following

proced re

checks

the

basic

operation

of

the

7B53A/7B53AN.

It

may

also

be

sed

for

familiarization

with

this

instr ment

or

as

an

incoming

inspection.

This

proced re

is

divided

into

two

parts.

Sweep

Control

F nctions,

and

Main

and

Delayed

Triggering

F nctions.

A

complete

operating

check

of

the

7B53A/7B53AN

control

f nctions

can

be

made

by

performing

both

parts,

or

each

part

may

be

performed

separately.

NOTE

For

optimum

performance,

the

7B53A/7B53AN

should

e

installed

in

an

oscilloscope

system

with

similar

frequency

and

sweep

rate

capa ilities.

Set p

Proced re

1.

Install

the

7B53A/7B53AN

in

the

right

horizontal

compartment

of

the

indicator

oscilloscope.

2.

Install

a

Vertical

Amplifier

nit

in

the

left

vertical

compartment.

3.

T rn

on

the

indicator

oscilloscope

and

allow

at

least

20

min tes

warm p.

4.

Set

the

7B53A/7B53AN

controls

as

follows:

MAIN

TRIGGERING

SLOPE

(+)

MODE

AUTO

COUPLING

AC

SOURCE

INT

1-4

Operating

Instructions

—

7B53A/7B53AN

Operators

DLY'D

TRIG

LEVEL

SLOPE

COUPLING

SOURCE

Sweep

Controls

POSITION

MAG

TIME/DIV

OR

DLY

TIM

DLY'D

Time/Division

VARIABLE

Variable

Selector

DELAY

TIME

MULT

RUNS

AFTER

DLY

TIME

(f lly

clockwise)

(+)

AC

INT

Midrange

X1-IN

1

ms

1

ms

CAL

(f lly

clockwise)

Main

Variable

1.00

5.

Set

the

indicator

oscilloscope

to

display

the

pl g-in

nits

and

adj st

for

a

well

defined

display.

See

indicator

oscilloscope

and

vertical

nit

instr ction

man als

for

detailed

operating

instr ctions.

5.

Rotate

the

POSITION

control

and

note

that

it

horizontally

positions

the

trace.

Rotate

the

FINE

control

and

note

that

it

provides

precise

horizontal

positioning.

Disconnect

the

calibrator

signal.

Sweep

Calibration

NOTE

For

accurate

sweep

timing,

apply

a

signai

of

known

frequency

or

time

period

(time-mark

signal,

cali rator

square

wave,

60

hertz

line

etc.)

to

the

associated

vertical

amplifier

unit

and

adjust

the

TIME/DIV

OR

DLY

TIME

switch

and

the

SWP

CAL

control

to

cali rate

the

signal

to

the

oscilloscope

graticule.

Be

sure

that

the

sweep

timing

signal

is

accurate

within

0.5%.

The

following

sweep

cali ration

procedure

uses

a

TEKTRONIX

Time-Mark

Generator.

Sweep

Control

F nctions

The

following

proced re

checks

the

operation

of

the

sweep

controls

and

checks

the

Display

Modes.

Normal

Sweep

1.

Perform

steps

one

thro gh

five

of

the

Set p

Proced re.

6.

Connect

a

1

millisecond

time-mark

signal

from

the

Time-Mark

Generator

with

a

50-ohm

BNC

coaxial

cable

and

50-ohm

BNC

termination

to

the

Inp t

of

the

associated

vertical

nit.

Adj st

the

vertical

Volts/Div

switch

for

abo t

fo r

divisions

of

display

and

rotate

the

MAIN

TRIG



GERING

LEVEL

control

for

a

stable

display.

Check

the

CRT

display

for

one

complete

time-mark

per

division

(position

as

necessary).

If

necessary,

adj st

the

SWP

CAL

screwdriver

adj stment

for

one

complete

time-mark

per

division

over

the

center

eight

divisions

of

display.

Dis



connect

the

Time-Mark

Generator.

NOTE

The

Time/Division

switch

selects

main

sweep

rates,

delayed

sweep

rates,

and

Display

Modes

(MAIN

SWP,

INTEN,

DLY'D

SWP,

and

MIXED).

Refer

to

Selecting

Sweep

Rates

and

Display

Modes

discussions

in

the

General

Operating

Instructions

for

further

information.

2.

To

select

the

MAIN

SWP

Display

Mode,

press

in

the

DLY'D

Time/Division

knob,

and

set

the

TIME/DIV

OR

DLY

TIME

switch

and

the

DLY'D

Time/Division

switch

to

the

same

sweep

rate

(1

ms).

3.

Connect

the

one-kilohertz

calibrator

signal

from

the

indicator

oscilloscope

to

the

vertical

amplifier

nit

Inp t.

Adj st

the

Calibrator

and

the

vertical

Volts/Division

switch

for

fo r

divisions

of

display.

4.

Rotate

the

MAIN

TRIGGERING

LEVEL

control

for

a

stable

MAIN

SWP

display

(non-delayed).

Rotate

the

DELAY

TIME

MULT

dial

and

note

that

it

has

no

effect

on

the

display.

Intensified,

Delayed,

and

Mixed

Sweep

7.

Reconnect

the

oscilloscope

Calibrator

signal

to

the

vertical

nit

and

adj st

for

abo t

fo r

divisions

of

vertical

display.

P ll

o t

the

DLY'D

Time/Division

knob

and

rotate

clockwise

to

.1

ms/DIV

for

the

INTEN

Display

Mode

(TIME/DIV

OR

DLY

TIME

switch

remains

at

1

ms/DIV).

Note

that

a

delaying

sweep

with

an

intensified

portion

(delayed

sweep)

is

displayed

on

the

CRT

(the

oscilloscope

Intensity

may

need

to

be

varied

to

view

the

intensified

display).

8.

Rotate

the

DELAY

TIME

MULT

dial

and

note

that

the

amo nt

of

delay

time

before

the

intensified

portion

of

display

is

controlled

by

the

DELAY

TIME

MULT

dial.

9.

Rotate

the

VARIABLE

control

co nterclockwise

o t

of

switch

detent

and

note

that

the

sweep

rate

indicated

by

the

TIME/DIV

OR

DLY

TIME

switch

can

be

varied

to

at

least

the

sweep

rate

of

the

next

adjacent

position

(2

ms/DIV).

The

internal

Variable

Selector

connector

m st

be

set

for

variable

main

sweep

rates.

Ret rn

the

VARIABLE

control

to

the

CAL

position.

1-5

Operating

lnstructions

—

7B53A/7B53AN

Operators

10.

Press

the

DLY'D

Time/Division

switch

to

the

inner

position

for

the

DLY'D

SWP

Display

Mode.

Note

the

magnified

display

with

sweep

rate

determined

by

the

DLY'D

Time/Division

switch.

The

oscilloscope

Intensity

may

need

to

be

increased

to

view

the

delayed

sweep

display.

11.

P ll

o t

the

VARIABLE

Time/Division

knob

for

the

MIXED

Display

Mode

(MIXED

Display

Mode

can

be

selected

when

operating

in

the

DLY'D

SWP

Display

Mode

only).

Note

that

the

main

sweep

is

displayed

at

a

rate

determined

by

the

TIME/DIV

OR

DLY

TIME

switch

followed

by

a

delayed

sweep

display

at

the

rate

determined

by

the

DLY'D

Time/Division

switch.

Rotate

the

DELAY

TIME

MULT

dial

and

note

that

the

amo nt

of

display

allocated

to

each

sweep

is

determined

by

the

DELAY

TIME

MULT

dial.

Main

and

Delayed

Sweep

Triggering

F nctions

The

following

proced re

checks

the

operation

of

the

main

and

delayed

triggering

controls:

Partial

Procedure.

To

begin

the

Operating

Checko t

with

triggering,

perform

steps

1

thro gh

5

of

the

Set p

Proced re

provided

at

the

beginning

of

the

Operating

Checko t.

Connect

the

1

-kilohertz

calibrator

signal

from

the

indicator

oscilloscope

to

the

vertical

nit

Inp t

and

adj st

for

abo t

fo r

divisions

of

vertical

display.

12.

Set

the

TIME/DIV

OR

DLY

TIME

switch

and

the

DLY'D

Time/Division

switch

to

1

ms

and

press

in

the

DLY'D

Time/Division

switch

and

the

Variable

control.

CHECK

—

that

a

stable

display

can

be

obtained

with

the

COUPLING

switch

for

MAIN

TRIGGERING

set

to

AC,

AC

HF

RE

J,

and

DC

for

both

the

positive

and

negative

positions

of

the

SLOPE

switch

(MAIN

TRIGGERING

LEVEL

control

may

be

adj sted

as

necessary

to

obtain

a

stable

main

sweep

display).

Remove

all

connections

from

the

oscilloscope

system.

13.

Connect

a

60

hertz

signal

(line

voltage,

etc.)

with

a

50-ohm

cable

or

voltage

probe

to

the

vertical

nit

Inp t

and

adj st

the

Volts/Div

switch

for

abo t

fo r

divisions

of

display.

Set

the

MAIN

TRIGGERING

COUPLING

switch

to

AC

LF

REJ

and

set

the

TIME/DIV

OR

DLY

TIME

switch

to

10

ms.

Rotate

the

MAIN

TRIGGERING

LEVEL

control

thro gho t

its

range

and

check

that

a

stable

display

cannot

be

obtained

(TRIG'D

light

off).

14.

Change

the

MAIN

TRIGGERING

SOURCE

switch

to

LINE

and

the

COUPLING

switch

to

AC.

Check

that

a

stable

main

sweep

display

can

be

obtained

with

the

MAIN

TRIGGERING

COUPLING

switch

set

to

AC,

AC

HF

REJ,

and

DC

(MAIN

TRIGGERING

LEVEL

control

may

be

adj sted

as

necessary).

Remove

all

connections

from

the

oscilloscope

system.

15.

Connect

the

indicator

oscilloscope

Calibrator

signal

to

the

vertical

nit

Inp t

connector

and

to

the

MAIN

TRIG

IN

connector.

Set

the

Calibrator

for

a

0.4

volt,

1

kilohertz

signal

and

adj st

the

vertical

nit

Volts/Div

switch

for

abo t

fo r

divisions

of

display.

Set

the

TIME/DIV

OR

DLY

TIME

switch

and

the

DLY'D

Time/Division

switch

to

1

ms.

Set

the

MAIN

TRIGGERING

SOURCE

switch

to

EXT

and

check

that

a

stable

display

can

be

obtained

with

the

COUPLING

switch

for

MAIN

TRIGGERING

set

to

AC,

AC

HF

REJ,

and

DC,

for

both

the

positive

and

negative

positions

of

the

SLOPE

switch

(MAIN

TRIGGERING

LEVEL

control

may

be

adj sted

as

necessary

for

a

stable

display).

16.

Change

the

MAIN

TRIGGERING

SOURCE

switch

to

EXT

-r

10.

Set

the

oscilloscope

Calibrator

for

4

volts

at

1

kilohertz

and

adj st

the

vertical

nit

Volts/Div

switch

for

abo t

4

divisions

of

display.

Check

that

a

stable

display

can

be

obtained

with

the

COUPLING

switch

for

MAIN

TRIGGERING

set

to

AC,

AC

HF

REJ,

and

DC,

for

both

the

positive

and

negative

positions

of

the

SLOPE

switch

(MAIN

TRIGGERING

LEVEL

control

may

be

adj sted

as

necessary

to

obtain

a

stable

delaying

sweep

display).

Remove

the

Calibrator

signal

from

the

MAIN

TRIG

IN

connector.

17.

Set

the

MAIN

TRIGGERING

COUPLING

switch

to

AC

and

the

SOURCE

switch

to

INT.

Adj st

the

MAIN

TRIGGERING

LEVEL

control

for

a

stable

display.

Set

the

MODE

switch

to

NORM

and

check

for

a

stable

display.

Change

the

MODE

switch

to

AUTO

and

adj st

the

LEVEL

control

for

a

free-r nning

display.

Change

the

MODE

switch

to

NORM

and

check

for

no

display.

18.

Adj st

the

MAIN

TRIGGERING

LEVEL

control

for

a

stable

display.

Change

the

MAIN

TRIGGERING

MODE

switch

to

SINGLE

SWP.

Press

the

RESET

b tton

and

check

for

one

sweep.

Remove

the

1

kilohertz

signal

from

the

vertical

nit

and

press

the

RESET

b tton.

CHECK

for

no

display

and

that

the

READY

light

is

on.

Connect

the

1

kilohertz

signal

to

the

vertical

nit

and

check

for

one

sweep

as

the

signal

is

applied.

19.

Set

the

MAIN

TRIGGERING

MODE

switch

to

AUTO.

With

theTIME/DIV

OR

DLY

TIME

switch

at

1

ms,

p ll

o t

the

DLY'D

Time/Division

switch

and

rotate

to

.2

ms

(Intensified

Display

Mode).

Rotate

the

MAIN

TRIG



GERING

LEVEL

control

for

a

stable

display

(oscilloscope

Intensity

may

need

to

be

varied

to

view

the

intensified

display).

Rotate

the

DELAY

TIME

MULT

dial

and

note

that

the

intensified

portion

of

display

is

contin o sly

variable.

1-6