Tektronix 5440 Bedienungsanleitung

Inhaltsverzeichnis

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ι

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1

T

EK

T

R

O

N

IX

1

saao

OSCILLOSCOPE

1

ι

ι

ι

ι

I

N

STRU

CTIO

N

M

A

NU

A

L

Te

k

tronix,

Inc

.

Ρ

.

Ο

.

Box500

Beaverton,

Oregon

97077



Serial

Nu

m

b

er

070-2139-01



F

irst

P

ri

n

ti

ng

A

PR

1976

W

ARRANTY

All

TEKT

R

O

N

IX

instrume

nts

are

warra

n

ted

agai

n

st

d

efective

materials

andwor

k

ma

n s

h

ip

fo

r

one

year

.

Any

questions

wit

h

res

p

ect

to

t

h e

w

arranty

sh

oul

d

be

ta

k

en

up

wit

h

yourTE

K

TRON

IX F

ield

E

ngineeror

represe

n

tative

.

All re

q

uests

for

repairs

and

re

p

lacement

parts

s

h

ould

be

d

irecte

d

to

t

h

e

T

EK

T

R

O

N

IX

F

iel

d

Office

or

re pr

esen

tative

in

you

r

area

.

T

h

is

will

assure

you

t

h e

fastest

p

ossible

service

.

P

lease

i

n

clu

d

e

t

h e

instrument

Type

N

umber

or

P

art

N

um

b

er

and

Serial

N

umbe

r

wit

h

all

req

uests

for

parts

or

service

.

Sp

ecificatio

n s a

nd

price

c

h

ange

privileges

reserved

.

Copyrig

h

t

c

1976

by

Te

k

tro

n

ix,

Inc

.,

B

eaverto

n

,

O

r

egon

.

P

rinted

in

t

h

e

U

nite

d

States

of

America

.

All

rig

h

ts

reserved

.

Contents

of

t

h

is

pu

blication

may

n

ot

be

reproduced

in

any

form

wit

hout

permission

of

Te

k

tronix,

Inc

.

U

.S

.A

.

an

d

foreig

n

Te

k

tronix

productscovered

by

U

.S

.

and

foreign

patents

and/or

p

atents

pend

ing

.

T

EK

TRON

IX

is

α

registered

tra

d

emar

k

of

Te

k

tronix,

I

nc

.

TABLE

O

F

CO

N

T

EN

TS

SE

CTIO

N

1



O

PER

ATI

NG

I

NF

O

RM

ATIO

N

OPER

ATI

N

G

I

N

ST

RU

CTIO

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TA

BLE

OF

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EN

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P

age

F

I

R

ST

TIME

O

PER

ATIO

N

1-1

Calibratio

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Ch

eck



1-3

R

ead

out



1-3

B

eam

F

i

n

der



1-3

E

xter

n

al

Inte

n

sity

Input



1-3

G

ENER

AL

OPER

ATI

N

G

I

NF

O

RM

ATIO

N

1-3

Display F

ocus

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Trace

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t

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i

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or

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p

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xter

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ords

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Switch

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M

o

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aster

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n

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odulation

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Ph

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PER

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V

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L

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1-6

5400

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Cover)

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emoval

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ower

Transformer

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I

N

ST

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CO

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ACKM

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TI

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M

ou n

ti

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et

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o

d

1-8

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ack

Dimensions

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Installing

Th

e Slide-Out

Trac

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1-8

I

n

stallation

An

d

Ad

j

ustme

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t



1-11

Sli

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M

aintenance



1-11

O

PER

ATI

NG

T

EMPER

AT

URE



1-11

PLUG-IN

UN

ITS



1-11

Installation



1-11

Selectio

n

1-12

B

ASICOSCI

LL

OSCO

PE

APPL

ICATIO

N

S



1-12

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ea

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-to-

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M

easurements-AC

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n

stantaneous

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M

easurement-DC

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Com

p

arison

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ts

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1-14

Time

P

eriod

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1-15

Deter

m

ini

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re

q

uency

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1-15

R

isetime

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easu

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t

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ce

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easurements

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1-16

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ulti-trace

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eas

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reme

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t

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1-17

H

ig

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esolution

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ase

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1-18

5440

TA

BLE

O

F

CO

N

T

EN

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(cont

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

.

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PE

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Eq

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me

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e

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ERV

ICI

N

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ST

RU

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ENTS

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E

CTIO

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3

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ine

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inding

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S

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F

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EC

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K

P

age

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(cont

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SE

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AI

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PREVEN

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M

AI

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4-1

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B

I

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I

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4-3

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4-3

TR

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TR

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4-7

OB

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I

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REM

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V

A

L

A

N

D

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AC

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4-8

AD

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F

T

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R

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4-12

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AC

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4-12

SE

CTIO

N

5



AD

JUST

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T

I

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OD

U

CTIO

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5-1

Te

k

tro

n

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F

iel

d

Service



5-1

PREL

I

M

I

NA

RY

PR

OC

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DURE

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5-1

P

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L

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BR

ATO

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C

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T

DISPL

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VER

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(

U

si

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Calibration

F

ixture)



5-5

VER

TICA

L

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(

U

sing

5

Α

48)



5-7

H

O

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NTA

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SYST

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(

U

sing

Calibratio

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F

ixture)



5-8

H

O

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L

SYST

EM

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U

si

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5-10

RE

ADO

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T

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EM

5-12

SE

CTIO

N

6



OPTION

I

NF

O

RM

ATIO

N

SE

CTIO

N

7



REPL

AC

E

A

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CT

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L

P

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SE

CTIO

N

8



DIAG

R

AM

SAN

D

CI

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CU

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B

OA

RD

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ATIO

N

S

SE

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E

A

BLE

ME

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5440

ι

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5440

Oscillosco

p

e

Section

1-5440

O

PER

ATI

N

G

I

NF

O

R

M

ATIO

N

T

h

e

Te

k

tro

n

ix

5440

Oscilloscope

is

α

solid-state

instrument

designe

d

for

ge n

eral-

p

ur

p

ose

applications

.

T

h

is

i

n

strument

h

as

t

h

ree

p

lug-in

compartme

n

ts

t

h

at

acce

p

t

5000-series

plug-in

units

to

forma

com

p

lete

meas

u

rement

system

.

To

effectively

use

t

h

is

instrume

n

t,

t

h

e

o

p

eration

a

nd

capabilities of

t

h

e

i

n

strument

must

be

kn

ow

n

.

T

h

is

section describes

fro

n

t-

p

a

n

el

control

fu

n

ctions,

giving

first-time

and general operating

informatio

n

. I

n

formatio

n

or(

operating

voltage,

'



instrume n

t

co

n

version,

rac

k

mou

n

ti

n

g,

operating

tem

p

erature,

and

p

lug-i

n

i

n

stallation

is

also

include

d

.

ι

'



Steps

1 t

hroug h 19

of

t

he

followi

ng

procedure

p

rovi

de

an

op

eratio

n

al

check

to

verify

satisfactory

operation

of

t

he

oscilloscope

and

associate

dp

lug-ins

.

R

efer

to

F

ig

.

1-1 for

'



fro

n

t-panel

con

trol

a

nd

connector

locatio

ns

.

'



1

.

F

or

t

he

following

proce

d

ure,

α

5A-series

amplifier

plug-i

n sh

oul

d be

i

n

one

of

t

he

vertical

(left

o

r

center)



Time-

B

ase

Plug-in

pl

u

g-i

n

com

p

artments

and

α

513-series

time-

b

ase

p

lug-in

should

be

i

n

t

he

h

orizo

n

tal

(rig

h

t)

com

p

artment

.



Display



Alternate

(button

out)

P

osition



Ce

n

tere

d

M

ain

Sec/Div



5

ms

2

.

See

Operating

V

oltage

in

t

h

is

sectio

n

before



V

ariable

Seco

nds/Div



Cal

(f

u

lly

cloc

k

wise)

procee

d

i

ng

.

Set

t

h

eP

O

WER

switch

to

off

(

p

ushed

in)

a

nd



M

ag



Off

(button

out)

'



co nnect

t

he

5440

to

α

power

source

t

h

at

meets

t

hevoltage



M

ain

Trig

L

evel



Cou

n

tercloc

k

wise

an

d

fre

q

ue

ncy

re

q

uirements

of

t

h

is

i

n

str

u

me

n

t

.

Source



L

eft

(or

R

ig

h

t

if

t

h

e

am

p

lifier

p

lug-in

is in

t

he

'



3

.

Turn

t

h

e

I

N

T

EN

SITY

an

d

RE

ADO

U

T

I

N

T

EN

S

co

n

-



cen

ter

com

partment)

t r

ols

countercloc

k

wise

a

nd

pull

t

he

P

O

WER

switc

h

o

u

t

to



Cou

p

ling



Auto

T

r

ig,

AC

tur

n

t

h

e

i

n

str

u

me

n

t

on

.

Set

t

h

e

fro

n

t-

p

a

n

el

co

n

trols

as



Cou

p

l,

+Slo

p

e

follows

:



M

o

de



M

ai

n

Sweep

ι

ι

ι

ι

ι

ι

ι

ι

F

I

R

ST

TIME

O

PER

ATIO

N

Amplifie

r

Plug-in

Dis

p

lay



On

P

ositio

n

Centere

d

C

H

1

V

olts/Div



.1

C

H

1

V

ariable

V

olts/Div



Cal

(fully

cloc

kwise)

C

H

1

I

np

ut

Cou

p

li

ng



DC

Trigger



C

H

1

M

ode



C

H

1

O

p

erating

Information-5440

F

OC

U

S

Control



I

N

T

ENSITYCo

n

trol

Provides a

dju

st

m

en

t

to

Co

n

trols

d

isplay

brig

h

t-

obtai

n

α

well-

d

efine

d

d

is-



ness

.

play

.

ΕΧΤ

I

N

T

EN

SITY

I

NPUT

Con

nector

P

er

m

its

app

lication

of Z-

axis

signals

to

the

C

R

T

(DC

cou

p

le

d

) .

Positive-

going

signal

increases

i

n

ten-

sity

.

BEAM

F

I

N

D

ER

Pu

s

h

button

Br

ings

beam

on-screen

;

limits

intensifie

dd

isplay

to

area

insi

d

e graticule

.

F

ig

.

1-1

.

Fr

ont-

an

d

rea

r

-panel

cont

r

ols

an

d

connecto

r

s

.

RE

ADO

U

T

I

N

T

EN

S

Co

nt

r

ol

Co

n

trols

b

rig

h

t

n

ess

of the

rea

d

out

portionof the

C

R

T

d

isplay

.

In

t

h

e

f

u

lly

co

unterclock

wise

p

ositio

n

,

t

h

e

readout

system

is

in-

operative

.

G

R

AT

I

LLUM

Co

n

trol

Controls

Graticule

illumi-

nation

.

P

O

WER

Switc

h

Tu

rns

i

n

str

u

ment

p

ower

on

or

off

.

CA

L

I

BR

ATO

R

L

oop

Pr

ovides

positive-going

acc

u

rate

400-millivolt

and

4-

m

illia

mp

ere

s

quarewave

at αfrequ

ency

of

twice

t

h

e

li

ne

fre

quen

cy

for

cali

b

ra-

tio

n

and

probe

compensa-

tio

n

.

2139-02

Operating

I

n

formatio

n

-5440

4

.

Advance

t

he

I

N

T

EN

SITY

control

un

til

t

h

etrace

is

at



14

.



Set

t

h

e

time-

b

ase

unit

for

magnifie

d

o

p

eration

.

t

he d

esired

viewing

level

.

T

he

trace

s

houl

d

app

ear

near

t

he



N

otice

t

h

at

t

he read

out

d

is

p

lay

cha

n

ges

to

indicate

t

he

graticule

center

.



correct

magnified

sweep

rate

.

If

α

readout-co

d

ed 10

Χ

probe

is

available for

use

with

t

he

vertical

un

it,

install

it

on

t

he

i

np

ut

co

n

nector

of

t

he

vertical

p

lug-in

.

N

otice

th

at

t

he

5

.



Connect

a

1

Χp

robe,

or α

test

lea

d

from

t

h

e

amplifier



d

eflection

factor

i

n

dicate

d

by

t

he

readout

is

increase

d

by

p

lug-i

n

i

n

put

co

nn

ector

to

t

he

CA

L

I

BR

ATO

R

loop

.



10

times

w

h

en

t

he

probe

is

a

dd

ed

.

R

eturn

t

he

time-base

unitto

normal

sweep

op

eration

an

d

disco

nn

ectthe

p

robe

.

6

.

Tu

r

n

t

he

M

ain Trig Level

control

cloc

k

wise

un

til

α

stable d isplay

is

obtaine

d

.

Ad

j

ust

t

h

e

vertical

an

d horizon

-



15

.



N

otice

t

h

at

t

he

rea

d

out

from

αp

articular

p

lug-in

tal



P

osition



co

n

trols



so



t

h

at

t

he

display



is

centere

d

occupies

α

s

p

ecific

locatio

n

on

t

he d

is

p

lay

area

.

If

eit

her of

vertically

and

starts

at

t

he

left

edge

of

t

he

graticule

.



t

hevertical p

lug-in

units

is

α

dual-trace

u

n

it,

notice

t

h

at

t

he

read

out

for

C

han

nel

2 a

pp

ears

with

i

n

t

he

lower

division of

t

he

crt

below

t

he read

out

for

C

hann

el

1

.

7

.

A

dj

ust

t

he

F

OC

US

control

for

αsh

ar

p

,

well-define

d

disp

lay

over

t

he

e

n

tire

trace

le

ngth

.

8

.

Discon

n

ect

t

he

input

sig

n

al

and

position

t

he

trace

vertically

so

t

h

at

it

coin

cides

with

t

he

ce

n

ter

h

orizo

n

tal

line

of

t

he

graticule

.

9

.



If

t

he trace

is

not

parallel

with

t

he

center

h

orizo

n

tal

line,

see

Trace

Alignment

A

d

j

ustme

n

t

i

n

t

h

is

section

.

10

.

R

otate

t

he

G

R

AT

I

LLUM

control

t

h

roug

h

out

its

range

and

notice

t

h

at

t

h

e

graticule

lines

are

illuminate

d

as

t

he

control

is

turn

ed

cloc

k

wise

.

Set

t

he

control

so

graticule

lines

are

illumi

n

ated

as

desire

d

.

Calibration

C

h

ec

k

11

.



M

ove

t

h

e

trace

two

d

ivisions

below

graticulecenter

a

n

d

reconnect

t

he calibrator

sig

n

al

to

t

h

e

am

p

lifier

p

lug-in

in

put

connector

.

12

.

T

he disp

lay

s

h

ould

be

four

d

ivisio

ns in

am

p

litu

de

wit

h

six

complete

cycles

(five

complete

cyclesfor50-

h

ertz

li

ne

fre

q

ue

ncy) sh

ow

n h

orizontally

.

An

i

n

correct

d isplay

in

d

icates

t

h

at

t

h

e

oscillosoc

pe

mai

n

frame

or

p

lug-ins

nee

d

to

be

recalibrated

.

B

eam

F

inder

16

.

M

ove

t

he

display

off-screen

with

t

he

vertical

p

osition

co

n

trol

.

17

.

P

us

h

t

he

BEAM

F

I

ND

ER

button

and

observe

t

hat

t

h

e d

is

p

lay

compresses

i

nto

t

he

scree

n

area

.

R

epositio

n

t

h

e

d

is

p

lay

to

screen

ce

n

ter

an

d

release

t

he

BEAM

F

I

ND

ER

button

.

E

xternal

Inte

n

sity

In

p

ut

18

.

Co

nnect

α

5

volt,

1

kH

z

si

n

e-wave

or s

q

uare-wave

signal

to

t

he

ΕΧΤ

I

N

T

EN

SITY

I

NPU

T

connector

on

t

h

e

rear

p

anel

.

Also,

u

se

t

he sig

n

al to

externally

trigger

t

he

time-base

p

lug-i

n

.

19

.

Slowly

rotate

t

he

I

N

T

EN

SITY

co

n

trol

counter-

cloc

k

wise

until

t

h

e trace

appears

to

be

αseries of

dimme

d

and brighten

ed

segme

n

ts

.

T

he

brig

h

te

n

e

d

segments

correspo

nd with

t

he

to

p

s

of

t

he calibrator

squarewaves

.

G

ENER

A

L

O

PER

ATI

N

G

I

NF

O

RM

ATIO

N

Display

F

ocus

R

eadout



If

α

well-defined

disp

lay

cannot

be

obtai n

ed

with

t

h

e

13

.

Turn

t

he

RE

ADO

UT

I

N

T

EN

S

control

cloc

k

wise



F

OC

U

S

co

n

trol,

even

at

low

inte

n

sity

setti

n

gs,

ad

j

ustme

n

t

un

til

an

al

ph

anumeric

dis

p

lay

is

visible

wit

h

i

n

t

he

to

por



of

t

he

internal

astigmatism

co

n

trol

may

be

require

d

.

bottom

divisio

nof

t

h

e

crt

(reset

t

he

F

OC

U

S

a

dj

ustme

n

t if

n

ecessary

for

best

d

efi

n

itio

nof

th

e

readout)

.

C

han

ge

t

h

e

V

olts/Div switc hof

t

h

e

am

p

lifier

p

lug-in

t

h

at

is

selecte

d

for



To

c

h

ec

kfor

proper

setting of

t

he

Astig

control,

slowly

dis

p

lay

.

N

otice

t

h

at

t

he

readout

p

ortio

n

of

t

h

e d

isplay



tur

n

t

h

e

F

OC

US

control

t

h

roug

h

t

he

optim

u

m

setting with

ch

anges

as

t

h

e

deflection

factor

is

c

h

anged

.

L

i

k

ewise,



αsignal d isplayed

on

t

he

crt

scree

n

.

If t

h

e

Astig

co

n

trol

is

ch

ange

t

he

Sec/Div

switc

hof

t

he

time-base

un

it

t

hat

is



correctly

set,

t

he

vertical

and

h

orizontal

p

ortions

of

t

h

e

selecte

d for

d

is

play

.

N

otice

t

hat

t

he read

out

display forthe



trace

will

come

into

sharpest

focus

at

t

h

e

same

position of

time-base

u

nit

ch

anges

also

as

th

e

sweep

rate

is

ch

ange

d

.



t

he

F

OC

U

S

co

n

trol

.

Operati

n

g

I

n

formation-5440

Trace

Alignment

Ad

j

ustment



dis

p

laye

d

wit

h

i

n

t

he

to

p d

ivisio

n

of

t

he

gratic

u

le

and

t

he

If

α

free-run

n

i

n

g

trace

is

not

parallel

wit

h

t

h

e

h

orizontal



rea

d

out

from

C

ha

nn

el

2

is

dis

p

layed

directly

below

wit

h

i

n

gratic

u

le

lines,

set

t

he

Trace

R

otation

ad

j

ustme

n

t

(internal



the

bottom

division of

t

he

graticule

.

Only

t

herea

d

out

from

p

lug-i

n

ch

annels

t

h

at

are

selecte

d

by

d

is

p

lay

switc

h

es,

or

ad

j

ustme

n

t)

as

follows

:

P

ositio

n

th

e

trace

to

t

he cen

ter



by

t

h

e

mode

switc

h

es of

dual-c

hannel

p

lug-i

n

s,

ap pear

i

n

h

orizo

n

tal

li

ne an

d

ad

j

ust

t

he

Trace

R

otation

a

dj

ustment



t

he

readout

display

.

s

o

t

h

at

t

he

trace

is

parallel

wit

h

t

h

e

h

orizontal graticule

lines

.

B

eam

F

i

n

der

Th

e

BEAM

F

I

N

D

ER

switc

h

provides

α

mea

ns

of

locating

αd

is

p

lay

t

h

at

overscans

t

he

viewi

ng area

eit

h

er

vertically

or

h

orizontally

.

Wh

en

t

h

e

BEAM

F

I

ND

ER

switc

h

is

p

resse

d

,

t

h

e

display

is

com

p

resse

d

wit

h

in

t

he

graticule

area

and

t

he

display

intensity

is

i

n

creased

.

To

locate

and

re

p

osition

an

oversca

nn

e

dd

is

p

lay,

use

t

h

e

following

proce

d

ure

:

1

.

P

ress

t

he

BEAM

F

I

ND

ER

switc

h

,

h

ol

d

it

in,

t

hen

i

ncrease

t

he

vertical

a

nd

h

orizo

n

tal

d

eflectio

n

factors

un

til

t

he

d

isplay

is

wit

h

i

n

t

h

e

graticule

area

.

2

.

Ad

j

ust

t

h

e

vertical

and h

orizo

n

tal

p

osition

controls

to

ce

n

ter

t

he

d

is

p

lay

about

t

he

vertical

and

h

orizontal

centerlines

.

3

.

R

elease

t

he

BEAM

F

I

N

D

ER

switc

h

;

t

h

e

d

isplay

should remain

wit

h

in

t

he viewing area

.

R

eadout

(

W

orks

Only

W

it

h

5400-Series

Plug-in

U

nits)

Th

e

rea

dout

system

of

t

h

e

p

ower

su

pp

ly/amplifier

and

d

isplay

mo

d

ules

allows

alp

h

anumeric

d

is

p

lay

of

i

n

forma-

tio

n

on

t

h

e

crt,

alo

n

g

wit

h

t

he a

n

alog

waveform

displays

.

T

he

information

dis

p

laye

d

by

t

he rea

d

out

system

is

obtained

from

t

he

plug-in

units

t

h

at

are

installe

d

in

t

he

p

lug-in

compartments

.

T

he ch

aracters

of

t

h

e

readout

display

are

written

by

t

he

crt

beam

on

α

time-s

h

ared

basis

wit

h

t

h

e

signal

waveforms

.

T

he

R

eadout

System

o

p

erates

i

n

α

free-r

u

nn

ing

mo

de

to

i

n

terru

p

t

t

he

waveform

d

is

p

lay

to

p

resent

c

h

aracters

.

T

he

waveform

d

is

p

lay

is

interru

p

ted

for

only

about

20

microseconds

for

eac

h

c

h

aracter

t

h

at

is

d

is

p

laye

d

.

T

he

rea

d

out

information

fro

m

eac

h p

lug-in

is

called

α

word

.

U

p

to

six

(eig

h

t

wit

h

Op

tion

3)

words

of

rea

dout

information

can

be

d

is

p

layed

.

T

he

locatio

n

at

w

h

ic

h

eac

h

readout

word

is

p

resente

d

is

fixed

and

is

directly

relate

d

to

t

he p

lug-i

n

u

n

it

an

d

ch

annel

from

w

h

ic

h

it

originated

.

F

ig

.

1-2

s

h

ows

t

he area

of

t

h

e

g

raticu

le

w

here

t

herea

d

out

from

each p

lug-i

n

unit

ch

a

nn

el

is

dis

p

laye

d

(external

readout

programmi

n

g

is

available

only

wit

h

Op

tion

3)

.

N

otice

t

h

at

t

he

readout

from

C

han

nel

1

of

eac

h p

lug-in

un

it

is

T

h

e

RE

ADO

UT

I

NT

EN

S

control

determines

t

he

i

n

ten-

sity

of

only

t

h

e

r

eadout

p

ortio

n

of

t

he

display

i

nd

ependent

of

t

he

ot

h

er traces

.

T

he readout

system

is

i

nop

erative

in

t

h

e

fully

countercloc

kwise

O

FF

p

ositio

n

Th

is

may

be

desirable

w

h

en

t

he

to

p

and

b

ottom

divisions

of

t

he

graticule

are

to

be

use

d

for

waveform

d

is

p

lay,

or

w

hen

t

he

trace

interruptions

necessary

to

d

is

p

lay

ch

aracters

do

not

allow

α

satisfactory

waveform

display

to

be obtained

.

O

p

tion

3,

Exter

n

ally

P

rogrammed

Sevent

h

and

E

ig

h

t

h R

eadout

W

or

d

s

Th

is

op

tio

n adds α25-p

in

connectorto

t

he

rear-

p

anel

of

t

he

5440

t

hrough

wh

ic

h

two

ten-ch

aracter

readout

words

ca

n

be

dis

p

laye

d

on

t

he

crt,

see

F

ig

.

1-2

.

DisplaySwitc

h

i

ng

L

ogic

Th

e

electro

n

ic

switc

h

i

n

g

for

time-s

h

are

d d

isplays

is

p

roduced

at

t

he

plug-i

n

i

n

terface

wit

h

i

n

th

e

mai

n

frame

;

however,

t

h

e

switc

h

ing

logic

is

selecte

d

i

n

t

he p

lug-in

units

.

T

h

e

system

allows

any

combi

n

ation

of

p

lug-i

n

s

a

n

d

Dis

p

lay

switc

h

setti

n

gs

.

R

efer

to

t

h

e

indivi

d

ual

plug-in

ma

n

uals

for

specific capabilities

and

operati

n

g

procedures

.

L

eft

R

ig

h t

V

ertical

V

ertical

C

h

an

nel

1



C

h

a

nn

el

1

Horizontal

H

orizo

n

tal

Α

or

M

ai

n



Β

or

Delayed

L

eft

R

ig

h t

E

xter

n

al

E

xter

n

al

V

e

r

tical

V

ertical

W

or

d

W

ord

Channel

2



C

hann

el

2



(C

h

a

nn

el)

1



(C

h a

nn

el)

2

E

xter

n

al

rea

dou

t

i

n

formatio

n

w

h

e n

optio

n

is

i

n

stalle

d

.

2139-03

F

ig

.

1-2

.

L

ocatio

n

of

r

eadout

on

th

e

crt

identifyi

ng

t

he

origi-

n

ati

ng

pl

u

g-i

n un

it

and chann

el

(and

exte

r

nal,

if

Optio

n3

is

i

n

-

stalle

d

)

.