Tektronix 576 User manual

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CONTENTS

Section

1



S

p

ecification

Section

2



Operating

Instructions

Sectio

n

3



Circuit

Descri

p

tion

Section

4



M

aintenance

Section

5



P

erformance

C

h

ec

k

/Cal

ibratio

ηP

roce

d

ure

Abbreviations

and

Symbols

P

arts

Or

d

ering

Information

Section

6



E

lectrical

P

arts

L

ist

M

ec

h

anical

Parts

L

ist

Information

Section

7



Mechanical

P

arts

L

ist

Section

8



Diagrams

M

ec

h

anical

P

arts

L

ist

Illustrations

Accessories

Abbreviations

an

d

symbols

use

d

in

t

h

is

manual

are

base

d

on

or

ta

k

en

d

irectly

from

IEEE

Stan

d

ar

d

260

"Stan

d

ar

d

Symbols

for

Units",

MIL-STD-12B

an

d

ot

her

stan

d

ar

d

s

of

t h

e

electronics

in

d

ustry

.

Change

infor

m

ation,

if

any,

is

locate

d

at

t h

e

rear

of

t

h

is

manual

.

Type

576

Fig

.

1-1

.

Type

576

Curve

Tracer

.

The

Ty

pe

576

Curve

Tracer

is

α

dynamic

semicond

ucto

r

tester

w

h

ic

h

allows

d

is

p

lay

a n

d

meas

u

rement

of

c

h

aracte

r

is-

tic

curves of

α

variety

of

two

an

d

t

h

ree

terminal

d

evices

i

n

clu

d

ing

bi

p

olar

transisto

r

s,

fiel

d

effect

t

r

ansistors,

M

OS-

FE

Ts,

silicon

controlle

d

rectifiers

and

uni

j

unction

transis-

tors

.

Α

va

r

iety

of

possible

measurements

is

available

using

eit

h

er

groun

d

ed

emitter

or

g r

ounde

d

base

conf

ί

g

ιι

rations

.

T

he

instrument

has

available

eit

h

er

an

AC

or

α

DC

collecto

r

su

pp

ly

voltage

rangi

n

g from 0

to

±1500

volts

.

T

h

e

ste

p

generator

prod

uces

eit

h

er

cur

r

ent

or

voltage

ste

p

s,

w

h

ic

h

may

be app

lie

d

to

eit

h

er

t

h

e

base terminal or

t

he

emitter

terminal of

t

he

device un

d

er

test

.

Ste

p

generator

out

p

uts

range

f

r

om

5

ηΑ

to

2

Α

in

t

he cur

r

ent

mo

d

e,

an

d

from

5

mV

to

40

V

in

t

he

voltage

mo

de

.

T

h

e

ste

p

s

may

also

be

pro

duced

as

s

h

ort

d

uration

pulses

.

Calibrate

d

ste

p

offset

allows

offsetting

t h

e

ste

p

generato

r

outp

ut

eit

h

er

positive

or negative

.

T

he

vertical

dis

p

lay

am

p

lifier

measures

eit

h

er

collector

current

or

leakage

current

with α

maximum

d

eflection

factor of

1

ηΑ

/

d

ivision

w

h

en

making

α

leakage

TA

BLE

1-1

ELE

CT

R

ICA

L

C

H

A

R

ACT

ER

ISTICS

Collector

Sup

p

ly

I

Collector

S

upp

ly

Maxi

mu

m

Con

ti

nuou

s

P

ea

k

C

urr

en

t

O

p

e

r

ating

Ti

m

e

vs

D

u

ty

Cycle

a

nd

Ambient

Tem

p

erature

.

W

it

h

t

he

PEAK

P

O

WER

W

ATTS

at

50

only,

t

he

followi

ng

limitatio

n

s

apply

:

Maxi-

mum

co

n

tin

u

ou

s

op

erati

n

g

ti

m

e

at

r

ated

c

urr

e

n

t

(100%

duty

cycle)

i

n

to

α

sh

ort

ci

r

c

u

it is

20

nii

n

utes

at

25

C

am

b

ie

n

t,

o

r

10

m

i

nu

tes

at

40

°

C

a

m

bie

n

t

.

Alte

rn

atively

d

ur

y

cycle

may

be

li

m

ited

to

50%

at

25

°

C

a

mb

ie

n

t

o

r

25%

at

40

°

C

a

mb

ie

n

t

.(

Α

no

r

mal

fa

m

ily

of

cu

rves

fo

r

α

tra

n

sisto

r

will

pr

o

du

ce

α

du

ty

cycle

effect

to

50%

o

r

less

eve

n

if

o

p

erate

d

co

n

ti

nu

o

u

sly

.)

Ove

r

dissipation of

t

he

collector

supply

will

te

mp

o

ra

r

ily

s

hu

t

it

off

and

t

urn

on

t

he

yellow

CO

LLE

CTO

R

S

UPPL

Y

VO

L

TAG

E

DISA

BLE

D

lig

h

t

.

Νο

d

a

m

age

will

res

u

lt

.

S

E

CTIO

N

1

S

PE

CI

F

I

CA

ΤΙΟΝ

C

hange

information,

if

any,

affecting

t

h

is

section

will

be

found

at

t

he

rear

of the

manual

.

measureme

n

t

.

T

h

e

horizontal

d

is

p

lay

am

p

lifier

allows

meas-

urement

of

both

collector

an

d

base

voltage

.

T

he

following

electrical

and

environmental

c

h

aracteris-

tics

are

vali

d

fo

r

instruments

op

erate

d

at

an

ambient

tem-

pe

r

atu

r

e

of

from

+1

ρ

°C

to

+40

°

C

after

an

initial

ωα

r

Μιιρ

p

erio

d

of

5

minutes,

w

hen p

r

eviously

calibrate

d

at

α

tem-

p

erat

ιι

re

of

+25

°

C

±5

°

C

.

Section

5,

P

er

formance

C

h

eck

an

d

Calibration

P

roce

d

ure,

gives

αproce

d

ure

for

ch

ecking

an

d

adjusting

t

he

Ty

pe

576

with

res

p

ect

to

t

he

following

s

p

eci

f

ication

.

T

he

Ty

p

e

576

MOD

301W

is

α

stan

d

ar

d

Ty

pe

576

wit

h

-

o

u

t t

he

R

ea

dout

Assembly

.

All

t

h

e

information

contained

in

t

h

is

manual pe

r

taini

n

g

to

t

heR

ea

do

u

t

Assem

b

ly

a

nd

its

o

p

e

r

ation

s

h

ould

be

dis

r

ega

r

d

ed

w

h

en

use

d

i

n co

nj

unction

wit

h

α

mo

d

ifie

d

inst

r

ument

.

Maximum

P

ea

k

Cu

r

rent

(

N

ormal

Mo

d

e)

ι

P

ea

k

Cur

r

ent

(Ste

p

Ge

n

erator

i

nP

ulse

d

Ste

ps

Mo

d

e)

Min

imum

Series

Resistance

Maximum

Se

r

ies

R

esistance

Series

R

esistance

Available

P

ea

k

P

ower

W

atts

Settings

Safety

Inte

r

loc

k

Type576

10

Α



2

Α



0

.5

Α



0

.1

Α

At

least

At

least

At

least

At

least

20A



4

Α



1

Α



0

.2

Α

0

.3

Ω



6

.5

0



140

Ω



3 k

Ω

65 k

Ω



1

.4

ΜΩ

6

.5

ΜΩ

6

.5

ΜΩ

0

.3

Ω

,

1

.4

Ω

,6

.5

Ω

,30

Ω

,140

Ω

,

650

Ω

,

3

k

Ω

,

14 k

Ω

,

65

k

Ω

,

300

k

Ω

,

1

.4

ΜΩ

and

6

.5

ΜΩ

,

all

with

in

5°/

ο

or

0

.1

Ω

.

0

.1

W, 0

.5

W,

2

.2

W,

10

W,

50

W

and

220

W

.

Derived

f r

om

nominal

peak op

en

circuit

collector

voltages

and nominal

series

r

esistance

values

at

n

omi

n

al

li

ne

voltage

.

Wh

en

MAX

PEAK

VO

L

TS

switc

h

is

set

to

eit

he

r

75,

350

or

1500,

α

p

ro-

tective

box

must

be

in

place

ove

r

test

termi

n

als

and

its

li

d

closed

be-

Ch

a

r

acteristic

P

erforma

n

ce

Swee

p

Modes

Normal

mo

de

:

AC

(at

line

fre-

q

uency)

;

positive-or

negative-going

full

wave

rectified

AC

.

DCmo

de

:

positive

o

r

negative

DC

.

DC

Mo

d

e

R

i

pp

le

Νο

-loa

d

:

2°/

ο

or

less

of

voltage,

or

0

.1

%

or

less

of

f u

ll

range

voltage

.

Voltages

Acc

u

racy

Peak op

en

circuit

voltages

on

all

r

anges

wit

h

in

+35%

and

-5%

.

R

anges

15

V

75

V

350

V

1500

V

Sp

ecification-Ty

p

e

576

L

oo p

ing

Com

p

ensation

fo

r

e

voltage

can be

a

pp

lie

d

.

Amber

lig

h

t

on

i

nd

icates

i

n

terloc

k

is

open

;

R

ed

lig

h

t

on

in

d

icates

voltage

is

be-

ing

a

pp

lie

d

to

test te

r

mi n

als

.

Cancels

st

r

ay

ca

p

acitance

between

collector

test

termi

n

al

an

dg

r

oun

d

i

n Stand

a r

d

Test

F

ixt

u

re

an

d

all

Standa

r

d

Test

Fixt

u

re

Accessories

.

Step

Gene

r

ato

r

2

Co

n

tin

u

oυ

s

DC

O

u

tp

u

t

vs

Ti

m

e,

Tem

p

erat

ur

e a

nd

D

u

ty

Cycle

.

2

Α

co

n

ti

nu

o

u s

DC

ou

t

pu

t

can

be

ac

h

ieve

d

fo

r

an un

limite

dpe

r

io

d up

to

30

°

C

amb

ie

n

t

.

Betwee

n30

0

C

a

nd

40

°

C

a

mb

ient,

2

Α

co

n

ti

n

uo

u

s

DC

op

eratio

n

s

hou

l

d

b

e

li

m

ite

d

to

15

m

i

nu

tes

or

li

m

ite

d

to

α

50%

du

ty

cycle

o

r

less

.

Α

fa

m

ily

of

ste

p

s

(suc

h

as

10

ste

p

s

at

200

mA

per

ste

p

)

will

a u

tomatically

r

e

du

ce

t

h

e

du

ty cycle to

50%

even

if

ge

n

era-

te

d

co

n

ti

nu

o

u

sly

.

E

xcee

d

i

n

gt

he

rati

ng

will

tem

p

o

r

a

r

ily

s

h

ut

off

powe

r

to

t

hee

n

tire

instrument

bu

t

no da

m

age

will

r

es

u

lt

.

R

ipple

Plus

N

oise

0

.5%

ο

o

r

less

of

A

MPL

IT

U

D

E

switc

h

setting

or

4

ηΑ

,

p

ea

k

to

pea

k

.

V

oltage

M

ode

AM

PL

IT

U

D

E 50

m

V

to

2

V,

i

n

1-2-5

se

q

uence

.

Switch

R

ange

M

axim

u

m

Voltage

20

times

A

MPL

IT

U

D

E

switc

h

set-

(Ste

p

s

andAid

i

n

g

ting

.

Offset)

Maximum

Cur

r

ent

At

least

2

Α

at

10

V

o

r

less,

d

e-

(Ste

p

sa

nd

Aiding

r

ating

linearly

to

10

mA

at

40

V

.

Offset)

S

ho

rt

Circuit

Cur-

20

mA,

100

mA,

500

mA,

+100%-

rent

L

imiti

n

g

(Ste

p

s

0°/

ο

;

2

Α

+50%

ο

-0°/

ο

;

as

selecte

d

by

andAid

i

ng

Offset)

C

URREN

T

L

I

M

IT

switc

h

.

Maxim

u

m

Op

p

osi

n

g

10

times

A

MPL

IT

U

D

E

switc

h

set-

Offset

V

oltage

i

ng

.

Maxim

u

m

Opp

osi

n

g

L

imite

d

betwee

n

10

mA

and

20

Current

mA

R

i

pp

le

P

lus

N

oise

0

.5%

ο

or

less

of

A

M

PL

IT

U

D

E

switc

h

setting,

or

2

m

V

,

p

ea

k

to

peak

.

Ste

p

R

ates

(

Fr

ont

p

a

n

el

R

AT

E button

labels

in

pa

r

ent

h

eses

.)

1

times

(

.5

Χ

),

2

times

(N

O

R

M

)

and

4

times

(2

Χ

)

line

f

r

e-

quency

.

Steps

occ

u

r

at

zero

collec-

tor

voltage

w

h

en

.5

Χ

or

N

O

R

M

R

AT

E bu

tto

n

s

a

r

e

p

r

esse

d

,

an

d

also

at

peak

voltage

w

hen 2

Χ

R

AT

E

button

is

p

resse

d

.

Ste

p

s

occ

u

r

at

collector

voltage

p

eak and

at

normal

r

ate

w

h

en

.5

Χ

a

nd2

Χ

.

R

AT

E

buttons

a

r

e

p

r

esse

d

toget

h

er

.

P

ulse

d

Step

s

Pu

lse

d

ste

p

s

80

μ

s

o

r

300

μs wide

wit

h

in

+20°/

ο

,

-5°/

ο

p

ro

duced

w

he

n-

eve

r

one

of

t

he

PUL

SE

D

ST

EP

S

buttons

is

p

r

esse

d

.

P

ulse

d

ste

p

s

can

be

p

r

o

d

u

ce

donly

at

normal

an

d

.5

times

normal

rates

.

Collector

Supply

mode

automatically

be-

comes

DC

w

h

en

eit

h

er

t

h

e

300

μ

s

or

80

μ

s

PUL

SE

D

ST

EP

S

button

is

p

resse

d

unless

P

O

L

A

R

ITY

switc

h

is

set

to

AC

.

If

t

he

300

μ

s

and

80

μs

PUL

SE

D

ST

EP

S

buttons

are

p

r

ess-

ed

toget

h

er,

300

μ

s

pulse

d

steps

a

r

e

p

r

od

uce

d

,

but

collecto

r

su

pp

ly

mo

d

edoes not c

h

an

ge

.

4ccuracy

(Cu

rrent

o

r

V

oltage

Ste

p

s,

I

n

cl

ud

-

ng

Offset)

Incremental

W

it

h

in

5%

b

etween

any

two

ste

p

s,

Accuracy

withou

t

.1

Χ

ST

EP

MUL

T

button

pr

esse

d

;

wit

h

in

10%

ο

wit

h

.1

Χ

ST

EP

Μ

UL

T

bu

tton

p

r

esse

d

.

Absolute

W

it

h

i

n

2°/

ο

of

total

out

p

ut,

incl

ud

-

Accu

r

acy

ing

any

amou

n

t

of

offset,

or

1°/

ο

of

A

MPL

IT

U

D

E

switch

setting,

w

h

ic

h

-

ever

is

g r

eater

.

Ste

p

(Current or

One

times

or

0

.1

times

(wit

h .1X

Voltage)

Am

p

litu

d

es

ST

EP

MUL

T

bu

tton

p

resse

d

)

t

he

AM

PL

IT

U

D

E

switc

h

setting

.

D

FF

S

ET

MU

L

T

Con-

Co

n

tinuously

va

r

iable

f

r

om

CI

to

10

trol

R

ange

times

A

MPL

IT

UD

E

switc

h

setting,

eit

h

er

ai

d

i

ng

or

op

p

osing

the

ste

p

ge

n

erator

p

ola

r

ity

.

C

ur

re

n

t

Mode

AM

PL

IT

U

D

E

200

mA

to

50

ηΑ

,

in

1-2-5

se-

Switch

R

ange quence

.

M

aximum

Cu

rr

ent

20

times

A

MPL

IT

U

D

E

switc

h

set-

(Ste

p

s a

nd

Ai

d

ing

ting,

exce

p

t

10

times

switc

h

setting

Offset

)

2

w

h

en

switc

h

is

set

to

200

mA,

an

d

15

times

switc

h

setting

w

he

n

t

he

switc

h

is

set

to

100

mA

.

Maximum

Voltage

At

least

10

V

.

(Ste

psand

Ai

d

ing

Offset)

M

aximum

Opp

osing

A

Wh

ic

h

ever

is

less

:

10

times

A

MPL

I-

Offset

C

u

rrent

TUD

E

switc

h

setting,

or

between

10

mA

an

d

20

mA

.

M

aximum

O

p

posing

Between

1

V

an

d3

V

.

Voltage

Ste

ps

an

d

Offset

P

olarity

Step

Families

N

umber

of

Ste

ps

Correspon

d

s

wit

h

collecto

r

sup

ply

pola

r

ity

(positive

going

w

hen

PO-

LAR

ΙΤΥ

switc

h

is

set

to

AC)

w

hen

t

heP

O

L

A

R

ITY

I

NVER

T

button

is

release

d

.

Is

o

p

posite

collector

su p

-

p

ly

p

ola

r

ity

(negative-going

in

AC)

w

hen

eit

he

r

t

he

POLARITY

IN-

VERT

butto

n

is

p

ressed

o

r

t

he

L

ea

d

Selector

switc

h

is

set

to

BAS

E

G

RO

UN

D

E

D

.

If

L

ea

d

Selector

switc

h

is

set

to

BAS

E

GR

O

UN

D-

E

D,

P

O

L

A

R

ITY

I

NVER

T

button

h

as

no

effect

on

ste

p

s

an

d

offset

polarity

.

R

ep

etitive

families

of

c

h

aracteristic

curves

gene

r

ated

with

REP

ST

EP

FAMILY

bu

tto

np

resse

d

.

Single

family

of

c

h

aracteristic

curves gen-

e

r

ate

d

eac

h time

SI

NG

LE

ST

EP

F

AM

I

L

Y

bu

tton

is

p

resse

d

.

R

an

ges

from

1

to

10

as

selecte

d

by

t

he

NUMBER

O

F

ST

EP

S

switc

h

.

For

zero

ste

p

s,

p

r

ess

SI

NG

LE

ST

EP

F

AM

Ι

L

Y

bu

tton

.

Dis

p

lay

Am

p

lifiers

Sp

ecificatio

n

-Type

576

E

xternal

H

ori-

2

ο

/

ο

3

ο

/

ο

4

ο

/

ο

3

ο

/

ο

zontal

(T

h

roug

h

I

n

te

r

face)

Leakage

Collecto

r

Su

pp

ly

M

o

d

e

Vertical

E

mitter

2

ο

/

ο

±1

3

ο

/

ο

±1

4

ο

/

ο

±1

3

ο

/

ο

±1

Cu

r

rent

(VER

T-

ηΑ ηΑ ηΑ ηΑ

ICA

L

Switch

set

between

10

ηΑ

and

2

mA)

Vertical

Emitter

Not

A

pp

licable

5

ο

/

ο

±1

ηΑ

Current

(VER

T-

ICA

L Switch

set

to

5

ηΑ

,

2

ηΑ

or

1

ηΑ

)

Η

ο

r

ί

z

οη

t

αΙ

Collecto

r

or

Base Volts

VER

TICA

L

switc

h

set

to

:

1

μΑ

o

r

mo

r

e

2%

ο

3

ο

/

ο

4

ο

/

ο

3

ο

/

ο

100

ηΑ

,

10

N

ot

A

pp

licable

3%

ο

plus

πΑ

or

1

ηΑ

0

.025

V

fo

r

eac

h

vertical

d

ivision

of

deflection

ο

η

t

he

CRT

500

ηΑ

,

50

N

ot

A

pp

licable

3%

ο

plus

ηΑ

or

5

ηΑ

0

.125

V

for

eac

h

vertical

division

of

d

eflection

ο

π

t

h e

CR

T

200

ηΑ

,

20

Not

A

pp

licable

3%

ο

plus

ηΑ

or

2

ηΑ

0

.050

V

for

eac

h

vertical

d

ivision

of

d

eflection

of

t

h e

C

R

T

Ste

p

Generator

Display

Dis

p

lay

Acc

u

racies

Dis

p

lay

magnifie

d

(DIS-

Dis

p

lay

(οι '

οο

f

H

ig

h

est

On-

PL

AY

O

FF

S

E

T

Selec-

Unmag-

Sc

r

een

Value)

f

or

switc

h

set

to

eit

h

er nifie

d

VER

TΧ

10

or

HO

R

IZ

X10)

an

d

offset

be-

tween

100

and

35

and10 and

40

divi-

15

d

ivi-

0

d

ivi-

sions

ions

sions

N

ormal and

DC

Collecto

r

Su

pp

ly

Mo

d

es

Vertical

Col-

2%

ο

3% 4%

3

ο

/

ο

lecto

r

Cu

r

re

n

t

E

xte

r

nal

Ve

r

t-

2%

ο

3%

ο

4%

ο

3%

ical

(Through

Ι

nterface)

H

orizontal

Col-

2%

ο

3

ο

/

ο

4%

ο

3

ο

/

ο

lector

V

olts

H

orizontal

B

ase

2%

3%

ο

4%

ο

3%

V

olts

S

p

ecificatio

n

-Type

576

C

R

T

and

Rea

d

out

Ve

r

tical

Ste

p

3

ο

/

ο

4

ο

/

ο

5

ο

/

ο

4

ο

/

ο

Generator

H

orizo

n

tal

Step 3

ο

/

ο

4

ο

/

ο

5

ο

/

ο

4

ο

/

ο

Generator

Deflection

Facto

rs

Vertical

Collector

Current

1

μΑ

/division

to

2

Α

/

d

ivision

in

1-2-5

se

q

uence

.

E

mitter

Current

1

ηΑ

/

d

ivision

to

2

mA/

d

ivision

in

1-2-5

se

q

uence

.

Step

Generato

r 1

ste

p

/

d

ivision

.

H

orizo

n

tal

Collector

Volts

50

mV

/

d

ivisio

n

to

200

V/divisio

n

in

1-2-5

se

q

uence

Base

V

olts

50

mV

/division

to

2

V/

d

ivision

in

1

25

se

q

uence

.

In

p

ut

Im

p

e

d

-

At

least

100

ΜΩ

wit

h

H

O

R

IZO

N

-

ance

TA

L

switc

h

set

to

50

mV,

100

m

V

an

d

200

m

V

B

AS

E

;

1

ΜΩ

wit

hin

2

ο

/

ο

wit

h

switc

h

set

to

.5

V,

1

V

an

d

2

V

.

Step

Gene

r

ato

r

1

ste

p/d

ivision

M

aximum

Dis

playe

d

N

oise

1

ο

/

ο

or

less,

or

MAX

PEAK

V

O

L

TS

Switch

15

75

350

1500

Vertical

CO

LLE

CTO

R

1

Α

1

μΑ

2

μΑ

5

μΑ

E

M

ITT

ER

1

ηΑ

1

ηΑ

2

ηΑ

5

ηΑ

H

orizo

n

tal

CO

LLE

CTO

R 5

m

V

5

m

V

20

mV

200

m

V

B

AS

E 5

mV

5

m

V

5

mv

5

m

V

Calibration

C

h

ec

k

W

it

h

DIS

PL

AY

O

FF

S

E

T

Selector

switc

h

set

to

N

O

RM

(O

FF

),

s

p

ot

is

d

eflecte

d10

d

ivisions

both

vert-

ically

and

h

orizontally

with

i

n

1

.5

ο

/

ο

w

h

enever

the

CA

L

button

is

p

r

es-

se

d

.

W

it

h

DIS

PL

AY

O

FF

S

E

T

Selecto

r

switc

h

set

to

Χ

10

M

AG

N

I

F

I

ER

(eit

h

er

axis)

the

calib

r

ation

s

p

ot

is

with

i

n

0

.5

ο

/

ο

of ze

r

o

s

p

ot

(

p

revious

Ιγ

set

to

C

R

T

graticule

cen

te

r

)

w

hen

CA

L

button

is

p

ressed

.

Vertical

and

Ηο

r

ί

z-

Coarse

positioni

ng

in

5d

ivisio

n

in-

ontal

P

osition

Control

c

r

eme

n

ts

wit

h

in

0

.1

d

ivision

;

con

-

tinuous

fine

p

ositioning

over

at

least

5

d

ivisions

for

each

coarse

pos-

ition

.

Dis

p

lay

Offset

Vertical

or

H

o

r

izontal

offset

of

d

is-

p

lay

centerline

value

up

to

10

d

ivis-

io

n

s

in

21

half

d

ivision

ste

p

s

.

Display

Positioning

Sp

ot

p

ositioning

wit

h

ch

ange

in

Accuracy

U

sing

P

O

L

A

R

ITY

switc

h

setting

(usi

ng

P

O

L

A

R

ITY

Switch

AC

p

osition

as

r

eference),

wit

h

in

0

.1

d

ivision

of

:

V

ertically

H

orizontally

AC

Centere

dCen

te

r

ed

+(

ΝΡΝ

)

-5

d

ivisions

-5

d

ivisions

-(

ΡΝΡ

)

+5

d

ivisio

n

s

+5

d

ivisions

CRT

Ty

p

e

E

lectrostatic

deflectio

n

.

Sc

r

een

Size

Calibrate

d

area

of

10

d

ivisions

by

10

d

ivisions

;

12

u

sable

divisions

h

orizontally

(1 d

ivision

eq

uals

1

cm)

.

Ty

pical

Accel-

4000

V

lerating

P

oten-

tial

R

ea

d

o

u

ts

Automatic

d

igitally

lig

h

ted

dis

p

lay

.

R

ea

dout

is

automatically blan

ked

if

rea

d

ings

wo

u

l

dbe

outside

t

he

avail-

able

r

anges

or

would

give

er

r

oneous

d

is

p

lay

.

PER

VER

T

DI

V

1

ηΑ

to

20

Α

calculate

d

from

VER-

TICA

L

switc

h

setting,

DIS

PL

AY

O

FF

SE

T

Selector

switc

h

setting

and

M

OD

E

switc

h

setting

(o

r

Χ

10

Vertical

Interface

I

np

ut)

.

PER

H

O

R

IZ DI

V

5

m

V

to

200

V

calc

u

late

d

from

H

O

R

IZO

N

TA

L

switc

h

setting

and

DIS

PL

AY

O

FF

S

E

T

Selecto

r

switc

h

setting

PER

STEP

S

5

ηΑ

to

2

Α

and5

mV

to

20

V

cal-

cu

late

d

from

A

MPL

IT

U

D

E

switc

h

setting

an

d

.1

Χ

ST

EP

MUL

T

b

ut-

ton p

osition

(or

X10

Step

I

n

terface

In

p

ut)

.

βο

rg

m

PER

DI

V

Ch

aracteristic

Tem

p

erature

N

ono

p

erating

1

μ

to

500

k

calculated

from

VER-

TICA

L

switc

h

setting,

DIS

PL

AY

O

FF

S

E

T

Selector

switc

h

setting,

A

MPL

IT

U

D

E

switc

h

setting,

.1X

ST

EP

MUL

T

button

position,

Χ

10

V

ertical

Interface

In

p

ut an

d

Χ

10

Ste

p

Interface

In

p

ut

.

P

ower

R

equiremen

ts

Table

1-2

ENV

I

RO

NMEN

TA

L

C

H

A

R

ACT

ER

ISTICS

-40

0

C

to

+65

°

C

Information

Specification-Ty

p

e

576

TA

BLE

1-3

ME

C

HAN

ICA

L

C

H

A

R

ACT

ER

ISTICS

U

seful

O

p

eration

0

°

C

to

+50

°

C

Specifie

d

Op

eration

+10

°

C

to

+40

°

C

Altitu

de

N

ono

p

erating

To

50,000

feet

Operati

n

g

To

10,000

feet

V

ib

r

ation

O

p

erating

15 minutes

along

each

axis

at

0

.015

inc

h with

fre

q

ue

ncy

varie

d

from

10-50-10

c/s

in

1-minute

cycles

.

T

h

ree

minutes

at

any

resonant

point

o

r

at

50

c/s

.

Shock

N

ono

p

erating

30

g's,

1/2

si

n

e, 11

ms

d

uration,

1

s

hock

p

er

axis

.

Total

of

6

shock

s

Transp

ortatio

n

12

inc

h

p

ac

k

age

d

ro

p

.

Q

u

alifie

d

un-

der

t

h

eN

ational

Safe

Tran

sit

Com-

mittee

test

p

roce

d

ure

1

Α

.

P

ower

Connection

T

h

is

instrument

is

d

esigne

d

for

o

pe

r

ation

f r

om

p

owe

r

source wit

h

its

neu

tral

at or

n

ear

groun

d

(eart

h

)

p

otential

.

It is

not

inten

ded

fo

r

o

p

eration

f r

om

two

ph

ases

of

multi-

ph

ase

system,

or

across

legs

of

single-

ph

ase,

t

hr

ee wi

r

e

system

.

It is

p

r

ovi

de

d

with α

t

h

ree-wire

p

owe

r

cor

d with

three-terminal

p

olarize

d

plug

for

connectio

n

to

t

he p

ower

source

.

T

h

ir

d

wire

is

d

i

r

ectly

connecte

d

to

instrument

fr

ame,

and

is

inten

de

d

to

groun

d

t

he

inst

r

ument

to

p

r

otect

op

erating

personnel,

as

recommen

de

d

by

national

an

d

inte

r

national

safety

co

d

es

.

L

ine

V

oltage

R

anges

115

V

AC

230

V

AC

L

ow

90

V

to

110

V

180

V

to

220

V

M

e

d

ium

104

V

to

126

V

208

V

to

252

V

H

ig

h112

V

to

136

V

224

V

to

272

V

L

ine

F

re

quency

R

ange

48

to

66

H

z

M

axim

u

m

P

ower

305

W,3

.2

Α

Consum

p

tion

at

115

V

AC,

60

H

z

C

h

aracteristic

Descri

p

tio

n

Dimensions

H

eig

h

t

-15

i

nch

es

W

idt

h

-11

3/4

inc

h

es

De

p

t h

-23

1/4

inc

h

es

W

eig

h

t

-69

lbs

.

F

inis

h

F

ront

P

anel

(Ty

p

e

576

an

d

Stan

d

ar

d

Test

Fixture)

Ano

d

ize

d

Aluminum

Cabin

et

lue

vi

n

yl

p

ainte

d

aluminum

Trim

and

R

ear

Pan

el

Oatin

finis

h

e

d

c

hr

ome

General

T

h

is

section

of

t

he

instr

u

ction

manual

p

rovi

d

es

informa-

tio

n

necessary for operating

t

he

Ty

p

e

576

and

for

using

it

to

test

va

r

ious

semicond

uctor

d

evices

.

Include

d

are

set

u

p

p

r

ocedu

res,

α

d

escription

of

t

he

Type

576

controls

an

d

con

n

ecto

r

s,

α

d

iscussion

of

t

he

t

heory

of

t

he

i

n

st

r

ume

n

t,

α

first

time

o

p

eration

p

roce

du

r

e,

a

n

d

general

op

erating

info

r

-

mation

.

Also

i

n

clu

d

ed

is

α

section

d

esc

r

ibing

t

he

use

of

t

he

Ty

p

e

576

for

measu

r

ing

t

he ch

aracte

r

istics

of

various semi-

con

d

ucto

r

d

evices

.

Cooling

S

E

CTIO

N

2

O

PER

A

TI

N

G

I

N

ST

RU

CTIO

N

S

C

h

ange

info

r

mation,

if

any,

affecti

ng th

is

section

will

b

e found

at

t

h

e

rear

of

t

he

ma

n

ual

.

I

N

ITIA

L

CO

N

SID

ER

ATIONS

T

he

Ty

p

e

576

maintains

α

safe

op

e

r

ating

tem

p

e r

atu

r

e

w

h

en

op

erate

d

in

an

ambient

tem

p

e

r

atu

r

e

of

0

°

C

(122

°

F)

.

A

d

e

q

uate

clearance

on

all

si

d

es

of

t

he

instrume

n

t

s

hou

l

d be p

r

ovide

d

to

ass

u

re

f r

ee

air

flow

a

nd

d

issi

p

atio

n

of

h

eat

away

f r

om

t

h

e

instrument

.

Α

t

h

ermal

cu

tout

in

t

he

instrument

p

r

ovides

t

he

r

mal

p

rotection

by d

isconnecting

t

h

e

p

owe

r

to

t

he

i

n

strument

if

t

h

e

i

n

ternal

tem

p

eratu

r

e

excee

d

sα

safe

op

e

r

ating

level

.

Power

is

au

tomatically

resto

r

e

d

w

h

en

t

he

tem

p

eratu

r

e

r

et

u

rns

to

α

safe

level

.

It

shou

ld

be

noted

t

h

at

t

he

instrument

will

tur

n

off

un

d

e

r

ce

r

tain

conditions

of

h

ig

h

collector

su

pp

ly

cur

r

ent ou

t

p

ut

or

h

ig

h

ste

p

gene

r

ator

cu

r

rent

Output

even

t

h

oug

h

t

he

inst

r

ume

n

t

is

being

op

erate

d

in

an

ambient

tem

p

erature

w

h

ic

h

is

wit

h

in

t

he

s

p

ecifie

d

r

ange

.

See

footnotes

in

t

he

Specification

section

for

furt

h

er

info

r

mation

.

O

p

erating

V

oltage

an

d

F

re

q

uency

T

he

Ty

pe

576

ca

n be ope

r

ate

d

fr

om

eit

h

er

α

115-volt

or

α

230-volt

line

voltage

source

.

T

he

L

I

NE

VO

L

TAG

E

S

E-

LE

CTO

R

assembly,

locate

d

on

t

he

rear

panel,

allows

con

-

version

of

t

he

instrument

so

t

h

at

it

may

be o

p

erate

d

from

one

line

voltage

or

t

he

ot

h

er

.

In

a

dd

ition,

t

h

is

assembly

c

h

anges

t

he

connectio

n

s

of

t

h

e

p

ower

transformer

p

rima

r

y

to

allow

selectio

n

of

one

of

t

h

ree

regulating

ranges

(see

Table

2-1)

.

T

he assembly

also includes

t

he

two

line

f

u

ses

.

Wh

en

t

h

e

i

nstrument

is

converte

d

from

115-volt

to

230-volt

ope

r

atio

n

or

vice

versa,

t

h

e assembly

selects

t

he

p

ro

p

er fuse

to

p

r

ovi

de

t

he

correct

p

rotection

for

t

he

inst

r

ument

.

T

he

Ty

p

e

576

may

be

ope

r

ate

d

f r

om

eit

he

r

α50 Hz

or

α

60 Hz

line

fr

eq

uency

.

In

o

r

der

to

sync

hr

onize

th

e

ste

p

ge

ne

r

ato

r

wit

h

t

he

collecto

r

su

p

ply,

t

he

60

H

z-50

Hz

switc

h

,

locate

d

on

t

he

Ty

pe

576

r

ea

r

p

anel

below

the L

I

NE

Ty

pe

576

V

O

L

TAG

ES

ELE

CTO

R

assembly,

must

be

set

to

t

he

posi-

tion

w

h

ic

h

corres

pon

d

s

to

t

he

line

fre

q

uency

being

u

se

d

.

U

se

t

he

following

p

r

oce

d

u

re

to

conve

r

t

t

h

is

instrument

between

line

voltages,

regulating

ranges or

line

fre

que

n

cies

:

1

.

Disconn

ect

t

h

e

inst

r

ument

from

t

he

p

ower

source

.

TA

BLE

2-1

R

egulati

ng

R

anges

F

ig

.

2-1

.

Line

V

o

l

tage

Selector

assembly

an

d

60

H

z

-50

Hz

sw

i

tc

h

on

t

h

e

rear

panel

(s

h

own

wit

h

cover

removed)

.

R

eg

u

lati

ng

R

an

ge

R

an

ge

Selecto

r

115

V

olts

230

V

olts

Switch

P

ositio

n

N

omi

n

al

N

omi

n

al

_

L

O

(switc

h

bar

in

90

to

110

volts

180

to

220

volts

left

h

oles)

Μ

(switc

h

ba

r

in

104

to

126

volts

208

to

252

volts

mi

dd

le

h

oles)

Η

Ι

(switc

h

bar

i

n

112

to

136

volts

224

to

272

volts

rig

h

t

holes)

OperatingInstructions-Type

576

2-2

Fig

.

2-2

.

Front-panel

controls,

connectors

and

readout

.