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Re]

OPERATING

AND

SERVICE

MANUAL

MODEL

211B

SQUARE

WAVE

GENERATOR

SERIALS

PREFIXED:

G

621

COPYRIGHT

HEWLETT-PACKARD

GMBH

!I966

BOBLINGEN,

WESTERN

GERMANY

PRINTED:

JUNE

,

66

o02iI

-

90000

Table

of

Contents

TABLE

OF

CONTENTS

Section

;

Page

I

GENERAL

INFORMATION.

.........

1-1

1-1.

Description.

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

1-1

1-4.

Manual

Identification.

........

1-1

II

INSTALLATION.

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

2-1

2-1.

InitialInspection...........

2-1

2-4.

Claims

and

Repacking........

2-1

2-7.

Preparation

for

Use.........

2-1

2-10.

Installation.

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

2-1

2-12.

Rack

Mounting.

...........

2-1

II

OPERATION.

.........-2+082806458

3-1

3-1.

Introduction.

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

3-1

3-3.

Duty

Cycle.

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

3-1

3-6.

Operating

Procedures........

3-1

3-8.

Free

Running

Mode........

3-1

3-10.

Sync

Signals.

...........

3-1

3-12.

Trigger

Output..........

3-1

IV.

PRINCIPLES

OF

OPERATION.

.......

4-1

4-1,

Introduction.

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

4-1

4-3.

General

Description.

........

4-1

4-9,

Schematic

Theory.........

4-2

4-10.

Frequency

Control

Network.

.

. .

4-2

4-12.

Current

Source.

..........

4-2

4-13.

Switching

Circuit..........

4-2

4-14.

Ramp

Capacitor

Amplifier.

....

4-2

4-15,

Schmitt

Trigger.

.........

4-3

ii

Model

211B

Section

Page

4-16.

Syne

Input

Cirevit.........2..

4-3

4-17.

Trigger

Output

Circuit........

4-4

4-18.

6002

Amplifier.

...........

4.4

4-19.

502

Amplifier...

..........

4-4

4-20.

Power

Supply.

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

4-4

MAINTENANCE.

............0..

5-1

5-1.

Introduction.

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

5-1

5-3.

Test

Equipment............

5-1

5-5.

Instrument

Cover

Removal.

.....

5-1

0-7.

Performance

Check..........

5-1

5-9.

Repetition

Rate.

..........

5-1

5-10.

Symmetry

Control

Check.

....

5-3

5-11.

Output

Pulse

Characteristics.

. .

5-3

5-13.

902

Output...

..

Hes

atl

oe

Shs

hs

0-4

5-16.

6002

Output...

......04,

5-4

5-19.

Synchronization...

........

5-5

5-21.

Trigger

Output.

..........

5-5

5-23.

Power

Supply.

...........

5-6

5-25.

Troubleshooting.

...........

5-6

5-28.

Repair

and

Replacement.

......

5-6

5-30.

Component

Identification.

....

5-6

5-34.

Servicing

Etched

Circuit

Boards:

.

06

ses

ee

See

ee

5-6

REPLACEABLE.

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

.

6-1

6-1.

Introduction..............

6-1

6-3.

Ordering

Information.........

6-1

List

of

Illustrations

and

Tables

LIST

OF

ILLUSTRATIONS

Model

211B

Number

Title

Page

"1-1.

Model

211B

Square

Wave

Generator,

...

1-1

2-1.

The

Combining

Case............

2-0

2-2.

Steps

to

Place

Instrument

in

Combining

CASE?

ie

ave

fark

Geko

ar

els

sel

dS

2-0

2-3,

Adapter

Frame

Instrument

Combinations.

.2-1

2-4.

Two

Half

Modules

in

Rack

Adapter.

....

2-2

3-1.

Definition

of

Output

Pulse

Characteristics.

3-1

3-2,

Front

Panel

Description.

.........

3-2

4-1.

Basic

Block

Diagram.

...........

4-1

4-2.

Simplified

Current

Source

Operation.

. . .

4-2

4-3.

Ramp

Capacitor Amplifier

Block

Diagram.

4-3

4-4.

Synchronizing

Operation..........

4-3

Number

Title

Page

5-1.

Definition

of

Output

Pulse

Characteristics.

5-1

5-2.

Dial

Accuracy

Check.

...........

5-3

5-3.

502

Output

Pulse

Check.

..........

5-4

5-4,

6002

Output

Pulse

Check..........

5-4

5-5.

External

Pulse

Synchronization.

.....

5-5

5-6.

Trigger

Output

Pulse

Check........

5-5

5-7.

Component.

Location

on

A2

Board.

...,

5-8

5-8.

Repetition

Rate,

Synchronizing

and

Trigger

Output

Circuit

Schematic

Diagram.

5-9/5-10

5-9.

Power

Supply

Circuit

Schematic

Diagram.

5-11

5-10.

Component

Location,

top

view......

5-12

5-11.

Output

and

Attenuator

Circuits

Schematic

Diagrams

i350

es

bs

wow

eee

ke.

So

we

5-13

LIST

OF

TABLES

Number

Title

Page

1-1.

Model

211B

Specifications.

........

1-0

5-1.

Required

Test

Equipment..........

5-2

5-2.

Dial

Accuracy.

........6.2.50+02e005

5-3

Number

Title

Page

5-3.

Schematic

Diagram

Notes..........

5-7

6-1.

Reference

Designation

Index........

6-2

6-2.

Replaceable

Parts............

.

.6-8

Hii

Specifications

Model

211B

Specifications

50

and

600

ohm

Outputs

SYMMETRY

CONTROL:

Continuously

variable

from

25%

-

75%

duty

cycle.

POLARITY:

Negative

6

PHASE

DIFFERENCE:

180°

between

502

and

600Q

outputs

at

50%

duty

cycle.

50

ohm

Output

SOURCE

IMPEDANCE:

approximately

15pF.

PULSE

SHAPE:

(Measured

at

5

V

across

502)

RISE

AND

FALL

TIMES:

<

5ns

.

OVERSHOOT

AND

RINGING:

<

5%

peak

of

pulse

amplitude.

PRESHOOT:

<5%

502

+*3%

shunted

by

AMPLITUDE

MAXIMUM

OUTPUT:

5V

across

502,

10V

across

an

open

circuit.

Output

circuit

protec-

ted,

cannot

be

damaged

by

shorting.

ATTENUATOR:

Provides

7

steps

from

0.05

to

5

Vinal,

2.5,

5

sequence.

VERNIER:

Provides

continuous

adjustment

be-

tweenranges,

minimum

output

less

than

0.02V

across

502.

Rotating

vernier

to

minimum

(ccw)

may

increase

preshoot

to

10%.

600

ohm

Output

SOURCE

IMPEDANCE:

6002

410%

PULSE

SHAPE

RISE

AND

FALL

TIMES:

<

70ns

across

6002,

less

than140ns

across

anopencircuit.

Decreased

amplitude

setting

will

improve

rise

time.

OVERSHOOT

AND

RINGING:

<

5%

AMPLITUDE

MAXIMUM

OUTPUT:

30

V

across

6002,

60

V

across

an

open

circuit.

ATTENUATOR:

Providescontinuous

adjustment

from

full

output

to

less

than

0.3

V

across

6002.

1-0

Repetition

Rate

and

Trigger

Output

FREE

RUN

REPETITION

RATE

502

output:

1

Hz

to

10

MHz,

7

ranges

6002

output:

1

Hzto

1MHz,

6

ranges

DIAL

CALIBRATION:

1

-

10

(linear)

DIAL

ACCURYCY:

+5%

to

10

MHz

at

50%

duty

cycle.

Variation

of

symmetry

control

may

change

frequency

and

additional

+5%

(10%

on

10

MHz

range).

PERIOD

JITTER:

<

0.2%

at

any

duty

cycle

and

repetition

rate

setting.

SYNCHRONIZATION

SYNC

INPUT:

DC

coupled,

sine

waves

or

positive

pulses

from

1

Hz

to

10

MHz.

Frequency

of

synchronizing

signal

must

be

105%

-

140%

of

dial

setting.

SENSITIVITY:

Willsynchronizeon

positive

pulses

of

at

least

1

V,

sine

waves

of

at

least

2V

peak

to

peak.

INPUT

IMPEDANCE:

Approximately

5002

TRIGGER

OUTPUT

PULSE:

(suitable

for

synchroni-

zation

with

another

211B).

WIDTH:

10

(+5)

ns

at

50%

points.

AMPLITUDE:

At

least

2

V

across

502

TIMING:

Coincident

with

leading

edge

of

502

pulse

POLARITY:

Positive

or

Negative

General

POWER:

115

or

230

V

10%

-

15%,

50

Hzto

400

Hz,

23

W.

DIMENSIONS:

WEIGHT:

Net,

9ibs

(4kg).

Shipping

11

lbs

(5kg)

Model

211B

Section

I

Paragraphs

1-1

to

1-5

SECTION

|

GENERAL

INFORMATION

1-1.

DESCRIPTION.

1-2.

The

-hp-

Model

211B

Square

Wave

Generator

(shown

in

Figure

1-1)

is

a

compact,

general

purpose

instrument

providing

negative

pulses

of

variable

fre-

quency,

symmetry

and

amplitude.

Complete

specifi-

cations

of

performance

are

given

in

Table

1-1.

Two

independent

outputs

are

available.

The

502

source

supplies

pulses

with

5ns

rise

and

fall

times

and

a

peak

output

of

5

volts

across

502.

Simultaneously,

a

6002

source

provides

pulses

of

30

volts

across

6002

having

a

rise

and

fall

time

of

70ns.

Matched

output

impedance

provide

twice

the

voltage

across

an

open

circuit.

Amplitude

for

both

pulses

is

seperately

controllable.

The frequency

range

of

the

instrument,

1

Hz

to

10

MHz,

is

covered

in

7

decade

ranges

with

a

linearly

calibrated

dial

for

continuous

adjustment

on

all

positions.

The

502

output

oper

-

ates

to

10

MHz,

the

6002

output

to

1

MHz.

The

duty

cycle

can

be

varied

from

25%

to

75%.

1-3.

Trigger

output

pulses,

for

synchronizing

exter

-

nal

circuits

or

instruments,

have

a

pulse

width

of

less

than

20ns,

reversible

polarity

and

an

amplitude

of

at

ro.

Fal

218

SQUARE

WAVE

HEWLETT

PACKER

least

2

volt

across

502.

The

trigger

output

is

coin-

cident

with

the

leading

edge

of

the

502

output.

The

211B

operates

free

running

or

may

be

synchronized

with

external

signals

of

either

sinewaves

or

positive

pulses,

1-4.

MANUAL

IDENTIFICATION.

1-5.

Information

in

this

manual

applies

directly

to

Modell

211B

instruments

with

serial

prefix

of

G-

621

The

serial

prefix

is

the

first

three

digits

of

the

eight-

digit

serial

number

(e.

g.

000-00000)

used

to

indentify

each

-hp-

instrument.

If

the

serial

prefix

of

a

Model

211B

is

not

G-621,

a

manual

change

sheet

supplied

with

the

manual

will

define

the

differences

between

that

Model

211B

and

the

one

described

in

this

manual,

or

a

different

manual

will

provide

correct

informa-

tion.

Corrections

to

this

manual,

due

to

errors

that

existed

when

it

was

printed,

are

called

Errata

and

appear

only

on

the

change

sheet

supplied.

To

obtain

correct

manual

information

for

any

instrument,

con-

tact

the

nearest

Hewlett-Packard

Company

Sales/Serv-

ice

Office

and

always

specify

the

model

number

and

serial

number.

Figure

1-1

Model

211B

Square

Wave

Generator

1-1

Model

211B

Section

II

Figure

2-1

and 2-2

DIVIDER

ASSEMBLY

DIVIDER

LATCH

RETAINER

Figure

2-1

The

Combining

Case

oO

INSERT

DIVIDER,

ENGAGING

TABS

IN

TOP

AND

BOTTOM

MOUNTING

SLOTS

@

PUSH

RETAINER

DOWN

TWIST

DIVIDER

TO

VERTICAL

TORELEASE

POSITION

©

SLIDE

INSTRUMENT

©)

:

mee

INTO

CASE

PUSH

IN

TO

LIMIT

@

TO

SET

RETAINER

BACK

IN

PLACE,

ENGAGE

HOOKS

FIRST

4)

ON

ONE

SIDE

OF

DIVIDER,

THEN

ON

OTHER

SLIDE

LATCH

TO

LOCK

DIVIDER

PUSH

RETAINER

UP TO

LOCK

Figure

2-2

Steps

to

Place

Instrument

in

Combining

Case

Model

211B

Section

IT

Paragraphs

2-1

to

2-13

SECTION

Il

INSTALLATION

2-1.

INITIAL

INSPECTION.

2-2.

MECHANICAL

INSPECTION.

If

external

damage

to

the

shipping

carton

is

evident,

ask

the

carrier’s

agent

to

be

present

when

the

instrument

is

unpacked.

Check

the

instrument

for

external

dam-

age

such

as

broken

controls

or

connectors,

and

dents

or

scratches

on

the

panel

surfaces.

If

damage

is

evident,

see

Paragraph

2-4

for

recommended

claim

procedure

and

repackaging

information.

If

the

ship-

ping

carton

is

notdamaged,

check

the

cushioning

mat-

erial

and

note

any

signs

of

severe

stress

as

an

in-

dication

of

rough

handling

in

transit.

If

the

instru-

ment

appears

undamaged,

perform

the

electrical

check

given

in

the

following

paragraph.

2-3.

ELECTRICAL

CHECK.

Check

the

electrical

performance

of

the

Model

211B

as

soon

as

possible

after

receipt.

Paragraph

5-7

through

5-22contain

performance

check

procedured

which

will

verify

in-

strument

operation

within

the

specification

listed

in

Table

1-1.

This

check

is

also

suitable

for

incoming

quality

control

inspection.

If

the

Model

211B

does

not

perform

within

the

specifications

when

received,

refer

to

Paragraph

2-4

for

recommended

claim

pro-

cedure

and

repacking

information.

2-4.

CLAIMS

AND

REPACKING.

2-5.

Ifphysical

damage

is

evident

or

if

the

instru-

ment

does

not

meet

specifications

when

received,

no-

tify

the

carrier

and

the

nearest

Hewlett-Packard

Sales/Service

Office

(see

list

at

rear

of

this

manual).

Refer

to

inside

front

cover

of

this

manual

for

the

Warranty

statement

applicable

of

all

Hewlett-Packard

instruments

and

products.

The

Sales/Service

Office

will

arrange

for

repair

or

replacement

of

the

instru-

ment

without

waiting

for

settlement

of

the

claim

against

the

carrier.

2-6.

The

original

shipping

carton

and

packing

mate-

rial,

with

theexception

of

the

accordian-pleated

pads,

should

beused

for

reshipment.

The

accordian-pleated

pads

are

fatiqued

with

one

use

and

are

not

reusable.

The

Hewlett-Packard

Sales/Service

Office

will

also

provide

information

and

recommendations

on

materials

to

be

used

if

the

original

packing

material

is

not

available

or

is

not

reusable.

Materials

used

should

include:

(1)

a

double

walled

carton

(check

with

a

freight

carrier

for

test

strength

required),

(2)

heavy

paper

or

sheets

of

cardboard

to

protect

all

instrument

surfaces;

use

extra

material

around

projecting

parts

of

the

instrument,

(3)

at

least

four

inches

of

tightly-packed

shock-absorbing

material

surrounding

the

instrument.

Close

the

carton

securely

with

heavy

paper

tape.

If

the

instrument

is

to

be

shipped

to

a

Hewlett-Packard

Sales/Service

Office

for

repair,

attach

a

tag

showing

owner,

model,

serial

number

and

repairs

required.

2-7.

PREPARATION

FOR

USE.

2-8.

POWER

SOURCE

REQUIREMENTS.

The

Model

211B

may

be

operated

from

an ac

source

of

115

or

230

volts

(+10%,

-15%)

at|50

to

400

Hz!Pow-

fer

dissipation

is

approximately

25

watts.

With

the

instrument

power

cord

disconnected,

move

the

slide

switch

(located

on

rear

panel)

until

the

desired

volt-

age

numbers

(115

or

230)

arevisible.

A

narrow

blade

screwdriver

is

recommended

to

position

the

slide

switch.

The

instrument

power

line

fuse

(located

at

the

rear

of

the

instrument

above

the|power

cord

re-

ceptalcle)

is

a

0.5

ampere,

slow-blow

type

for 115

v.

operation

and

a

0.25

ampere,

slow-blow

type

for

230

v.

operation.

2-9.

THREE

CONDUCTOR

POWER

CABLE.

To

protect

operating

personnel,

the

National

Electrical

Manufacturers’

Association

(NEMA)

recommends

that

the

instrument

and

cabinet

be

grounded.

The

centre

pin

on

the

power

cable

is

the

ground

connec-

tion.

To

retain

the

protection

when

operating

the

instrument

from

a

two-contact

outlet,

use

a

three-

conductor

to

two-conductor

adapter

and

connect

the

adapter

wire

to

a

suitable

ground.

2-10.

INSTALLATION.

2-11.

The

Model

211B

is

fully

transistorized;

there-

fore

no

special

cooling

is

required.

However

the

in-

strument

should

not

be

operated

where

the

ambient

temperature

exceeds

55°

C,

2-12.

RACK

MOUNTING.

2-13.

The

Model

211B

is

a

submodular

unit that

when

used

alone

can

be

bench

mounted

only.

However

when

used

incombination

with

other

submodular

units

it

can be

bench

and/or

rack

mounted.

The

-hp-

com-

bining

case

and

adapter

frame

are

designed

specif-

ically

for

this

purpose.

FILLER

PANEL

Figure

2-3

Adapter

Frame

Instrument

Combinations

2-1

Section

IT

Paragraphs

2-14

and

2-15

2~2

oO)

ADAPTER

SPACER

CLAMP

RETAINING

SCREWS

Figure

2-4

Two

Half

Modules

in

Rack

Adapter

Model

211B

2-14.

COMBINING

CASE.

The

combining

case

is

a

full-module

unit

which

accepts

varying

combina-

tions

of

submodular

units.

Being

a

full-module

unit,

it

can

be

bench

or

rack

mounted

analogous

to

any

full

module

instrument,

An

illustration

of

the

combining

case

is

shown

in

Figure

2-1

.

Instructions

for

in-

stalling

the

Model

211B

in

a

combining

case

are

given

graphically

in

Figure

2-2.

2-15,

ADAPTER

FRAME.

The

adapter

frame

isa

rack

frame

that

accepts

any

combination

of

sub-mod-

ular

units.

It

can

be

rack

mounted

only.

An

illustration

of

the

adapter

frame

is

given

in

Figure

2-3.

To

as-

semble,

refer

to

Figure

2-4

and

proceed

as

follows

a.

Place

the

adapter

frame

(1)

on

edge

of

bench

as

illustrated.

b.

Stack

the

submodular

units

(2)

in

the

frame.

Place

the

spacer

clamps

(3)

between

instru-

ments.

;

d.

Place

the

spacer

clamps

(4)

on

the

two

end

instruments.

e.

Push

the

combination

into

the

frame.

Insert

screws

(5)

on

both

sides

of

frame,

and

tighten

until

submodular

instruments

are

se-

cure

in

frame.

g.

The

complete

assemble

is

ready

for

rack

mounting.

Model

211B

Section

III

Paragraphs

3-1

to

3-13

SECTION

Ill

OPERATION

3-1.

INTRODUCTION.

3-2.

This

section

contains

the

operating

instructions

for

the

Model

211B

Square

Wave

Generator.

This

in-

strument

has

been

designed

for

general

purpose

lab-

oratory

requirements

withthe

ease-of-use

as

a

prime

consideration.

Therefore

the

operating

procedure

is

quite

simple.

Figure

3-2

identifies

and

briefly

describes

the

pupose

of

each

panel

control

and

connector

on

the

instrument.

3-3.

DUTY

CYCLE.

3-4.

Duty

cycle

is

defined

as

the

ratio

of

duration

of

pulse

(i.e.

pulse

width)

to

the

total

duration

of

one

complete

cycle.

Figure

3-1

shows

the

relationship

which

determines

the

duty

cycle.

The

time

for

one

cycle

is

defined

as

the

period,

and

the

period

is

re-

lated

to

repetition

rate

by:

ae

1

Period

=

Re5-

Rate

Thus

the

product

of

pulse

width

and

frequency

mul-

tiplied

by

100

determines

the

duty

cycle

percentage.

3-5.

The

SYMMETRY

control

is

responsible

for

the

duty

cycle

setting;

the

variability

being

25

-

75

%

of

the

period.

The

duty

cycle

remains

unchanged

when

external

synchronizing

signals

are

applied

to

the

Model

211B.

PULSE

[~

WIDTH

|

AMPLITUDE

|

PERIOD

=

!

FREQUENCY

4

.

-PULSE_WIDTH

%*DUTY

CYCLE

Sena

ot

PULSE

WIDTH

x

FREQUENCY

x

100

Figure

3-1

Definition

of

Output

Pulse

Characteristics

3-6.

OPERATING

PROCEDURES.

3-7.

The

Model

211B

canbe

operated

in

two

different

modes,

free-running

or

synchronized

with

external

signals.

The

procedures

are

detailed

in

Paragraphs

3-8

through

3-13.

3-8.

FREE-RUNNING

MODE

3-9.

The

Model

211B

will

generate

internally

any

repetition

rate

from

1

Hz

to

10

MHz

(1

MHz

at

600

2

output).

The

repetition

rate

is

established

by

setting

the

MULTIPLIER

selector

to

any

of

the

seven

inter-

nal

ranges

and

then

adjusting

the

FREQUENCY

(Hz)

control

to

the

specific

rate

desired.

To

operate

proceed

as

follows

:

(a)

Push

instrument

LINE

switch

on.

(b)

Set

MULTIPLIER

to

desired

range

and

adjust

FREQUENCY

(Hz)

to

exact

position

for

frequency

desired.

(c)

Adjust

SYMMETRY

for

desired

duty

cycle.

(d)

502

OUTPUT.

Select

AMPLITUDE

range

and

VERNIER

setting

desired.

Note

that

the

cw

position

of

the

VERNIER

yields

at

least

that

indicated

voltage

on

the

AMPLITUDE

selector

switch.

(e)

6002

OUTPUT.

Adjust

AMPLITUDE

setting

as

desired.

Note

that

the

specified

amplitude

is

across

a

6002

load.

Twice

the

voltage

will

be

obtained

across

an

open

circuit.

3-10

SYNC

SIGNALS

3-11.

The

Model

211B

may

be

synchronized

by

ex-

ternal

signals

of

either

1

volt

positive

pulses

or

2

V

peak

to

peak

sinewaves

applied

to

the

SYNC

INPUT

connector.

External

signals

with

frequencies

of

105%

to

140%

of

the

internal

setting

of

the

211B

can

be

synchronized.

If

the

211B

is

not

in

synchronism

with

an

external

signal

compare

dial

and

range

settings

with

the

frequency

of

the

external

signal.

3-12.

TRIGGER

OUTPUT.

3-13.

Trigger

pulses

are

available

at

the

front

panel

of

the

Model

211B.

A

positive

or

negative

pulse,

selected

by

TRIGGER

POLARITY

switch

and

coin-

cident

with

the

leading

edge

of

the

502

output

pulse,

is

available

at

the

trigger

output

connector.

3-1

Section

II

Figure

3-2

®

3-2

211B

SQUARE

WAVE

GENERATOR

HEWLETT

PACKARD

Ke)

|

FREQUENCY

(Hz)

100

LINE

PUSH

ON/OFF

SYNC.INPUT

(i2)

W)

LINE

switch.

Controls

AC

power

to

instrument

and

indicates

"on"

position

by

glowing

red.

FREQUENCY

dial.

Provides

continuous

cal-

ibrated

control

of

the

output

frequency

within

the

range

determined

by

the

MULTIPLIER

setting.

FREQUENCY

MULTIPLIER

switch.

Selects

the

operating

range

of

the

FREQUENCY

dial.

SYMMETRY

control.

Provides

adjustment

of

duty

cycle

of

output

pulses.

AMPLITUDE

selector

switch.

Selects

amplitude

range

of

the

502

output

pulse.

AMPLITUDE

VERNIER

control.

Provides

contin-

uous

adjustment

of

the

502

output

pulse

between

settings

of

the

AMPLITUDE

selector

switch.

Maximum

CW

position

gives

at

least

the

voltage

shown

on

the

AMPLITUDE

selector

switch.

Figure

3-2

SYMMETRY

MULTIPLIER

IK

0

_j-

TRIGGER

OUTPUT

Model

211B

AMPLITUDE

(VACROSS

50.0;

AMPLITUDE

VERNIER

OUTPUT

OUTPUT

600n

5302

6

0)

@)

@

OUTPUT

-50

connector.

pulse.

Supplies

502

output

AMPLITUDE

control.

Provides

uncalibrated

control

of

600Q

output

amplitude.

C*

[TPUT-6002

connector.

Supplies

6002

output

pulse.

TRIGGER

POLARITY

switch.

Selects

either

pos-

itive

or

negative

TRIGGER

OUTPUT

pulse.

TRIGGER

OUTPUT

connector.

Supplies

trigger

output

pulse.

SYNC

INPUT

connector.

Input

connector

for

external

synchronizing

signals.

Front

Panel

Description