HP 425A Service manual

SA

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ETER

.

.®

CERTIFICATION

THE
THAT

TESTED

MEET

IT

I)FURTHER

MEASUREMENTS
NATIONAL

EXTENT
BRATION

HEWLETT-PACKARD

THIS

ITS

WAS

ALLOWED

INSTRUMENT

AND

PUBLISHED

SHIPPED

CERTIFIES

BUREAU

FACILITY

INSPECTED

FROM

ARE

OF

BY

.

COMPANY

WAS

SPECIFICATIONS

THE

THAT

TRACEABLE

STANDARDS

THE

THOROUGHLY

AND

FACTORY

ITS

CALIBRATION

BUREAU'S

CERTIFIES

FOUND

WHEN

.

TO

TO

THE
THE

CALI-

TO

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



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OPERATING

MODEL

SERIALS

AND

SERVICE

PREFIXED

425A

:

142

MANUAL

-

DCMICROVOLT-AMMETER

001304

Copyright

1501

PAGE

HEWLETT-PACKARD

MML

ROAD,

PALO

ALTO,

-i"

COMPANY

CALIFORNIA,U.S.A.

1958

Printed:DEC

1963



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To

adapt

changes

Instrument

142-

ERRATA

this

manualtoinstruments

shownintables

Serial

Prefix

:

.

#

MANUAL

DC

MICROVOLT-AMMETER

Manual

Manual

with

other

Make

Manual

ERRATA

Figure

Table

Table

5-12,
R12:Change
R13:Change

6-1,

CR1,

CR2:Change

J2:Changetofollowing

5060-0625
5060-0633
0340-0087

0340-0091

J3:Changetofollowing

5060-0632
5060-0633

0340-0087
0340-0091

M1:Change

R68:Change

V7,

V8

:

replaceable

XV7,

XV8:Delete

replaceable

Under

MISCELLANEOUS,
Change
Change
Change

6-2,
Change~StockNo.
Change~WStockNo.
ChangeStockNo.
ChangeStockNo.
ChangeStockNo.

G30A,
Change

Change
ChangeStock

ChangeStockNo.
ChangeStockNo.

G-83P:Delete
0727-0077:Change

9110-0038:Change
9110-0039:Change

G30B:Delete

Cep

Changes

Schematic

value
value

IndexbyReference

Binding

Binding
Insulator,
Insulator,

Binding
Binding
Insulator,
Insulator,

G-81Eto(~W

resistor

Delete

stock

."

stock

."

G74to(~W
G74D

toStock

G74N

toStock

Replaceable

StockNo.
StockNo.

No

entire

CHANGES

MODEL

Serial

serial

to 0.953
to 0.28

G-29A-74

tolerance

number

StockNo.

AC-10C
AC-10D
AC-54B

AC-54F
G-29A-74to1902-0108

entire
G-74to0370-0025

G-74Dto0370-0026

.

G-74Nto0370-0035
G-76Jto5060-0625
G-81Eto1120-0306

listing

resistor
descriptionto"60
description

425A

Prefixed:142-

Printed:12/63

prefixes

Instrument

Diagram,

ohms

ohms

Designator,
to

description,

description,

StockNo.

number

Parts

Cep

post

and ground

post:red

triple:black,
triple:black,

post:black
post

:

red
triple:black,
triple:black,

from

and

and

0370-0025
No.0370-0026
No.0370-0035

.

to

5060-0632

to

5060-0633

to

0340-0087

to

0340-0091

listing

.

tolerance

to

"50

check

StockNo.

(rmo)

(rmo)

1120-0306

10%to1%

change

change

.

from

cycle
cycle."

for

errata below,

Serial

Prefix

1902-0108

link:black

internal
external

internal
external

descriptionto"Part

descriptionto"Part

.

.
.

.
.

.
.

.

.

.
.

.

.

10%

.

"

(rmo)

(rmo)

to1%.

and

make

Make

Manual

.

ofA5;

ofA5;

Changes

not

separately

not

separately

5/5/64

L

SupplementAfor

425A-902

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Model

425A

ListsofIllustrations

Table

of

Contents

and

Tables

Section
I

GENERAL

1-1.Description
1-3.Applications
1-5

.

II

PREPARATION

2-1.Introduction.. . . . . .

2-3

.

2-6.Power
2-10.Power
2-13.Installation
2-15.Repackaging

II

OPERATING
3-1.Introduction
3-3.Preliminary
3-4

.

3-7

.

3-9

.

3-12

.

3-14.Isolating
3-16

.

V CIRCUIT

4-1.General

V

MAINTENANCE
5-1

.
5-3.Test
5-6.Mechanical

INFORMATION

... . . . . .

... . . . .

Differences

Unpacking

Low-Level
Ground

AC

Operating
Operation

DESCRIPTION

Introduction.. . . . . . . . .

Equipment

between

FOR

USE

and

Inspection
Requirements
Cable

. . .

for

INSTRUCTIONS

Considerations

Electrical

Currents

Voltages

Procedure

the

Chassis

withaRecorder

.

. . . . .

.

. . . ... ... .

AdjustmentofMeter

. .

. ...

Instruments

. . .

. . . .

.

. ... . . .

Shipment

. . . . . .

Phenomena

.

. . . . . .

. ...

. ... . . .

.

.

. . . . . . .

. . . . . . .

.

. . . . . . .

TABLE

. . .

.

. .
. .
. . .

. . .

Zero

.
.

.
.

.
.
.

Page

1-1
1-1

2-1
2-1

2-1
2-1

2-1
2-1
2-1

3-1
3-1
3-1
3-1

3-1

3-1
3-1

3-2

4-1

4-1

5-1
5-1
5-1

5-1

. . ..1-1

. ...

.

. . . .

. .

. ...

. .
.

. . . .

. . . . .

.

. . . .

. . . ..3-1

... . .

OF

CONTENTS

Section

V

VI

MAINTENANCE

5-8

.

Troubleshooting

5-9

.

Introduction

5-11

.

Amplifier-Power

5-13

.

Chopper

5-15

.

Modulator

5-18

.

Demodulator
5-20.Repair
5-21

.
5-23
5-24
5-26
5-28
5-30

5-33
5-35

5-37
5-38

5-40

5-42
5-44
5-46

5-47
5-49
5-53

REPLACEABLE
6-1
6-4.Ordering

Introduction

.

Cabinet

.

Modulator

.

DemodulatorReplacement

.

Range

.

Disconnecting

Resistor

.

Replacement

Resistor

.

Servicing
..Adjustments
.

Introduction
.

Adjustment

Bias

.

Adjustment

.

Meter

.

Performance

.

Introduction

.

Voltmeter

.

Ammeter

.

Introduction

(Cont~d)

. . . . . . . .

. . . .

Assembly

Assembly

and

. .

Calibration

Assembly

Replacement

. . .

Removal

Replacement

Switch

Information.. . . .

Replacement.. . .

Input-Shunting

of

Input-Shunting

.

Etched

.

. . . . . .

.

of

Cathode

. . .

of

Twin-T

Check

. .

Check

Check

PARTS

. . .

. . . . .

Supply

. . . ...

. . . . . .

.

. .

. . .

.

. . ...

. . . .

. .

Circuit

. . . .

.

. . . .

.
. . .

. . . . . ...

. . . . . .

. . . .

Follower

. .

. . . .

Filters..

. .

. . . .

. . .
. .

. . .
. . .

. .

. . . .

. . . .

. ...

. . . .

Boards

. .
. .

. .

. .

. . .

. .

.

.

. .
. .

. .
. .

. .
. .

.

.

.
.

.
.

.
.

Page

.
.

5-1
5-1
5-1
5-1
5-2
5-3
5-3

5-3

5-3
5-3

5-4
5-4

5-6
5-6

5-6
5-6

5-6
5-6

5-7
5-8
5-8
5-8
5-8
5-10

6-1
6-1
6-1

Number

1-1

.Model

3-1

.

4-1

.Block

.

5-1

5-2

.

5-3

.Modulator

5-4

.Right

5-5

.Range

5-6

.Connection

5-7

.Left

Number

1-1.Specifications
5-1

.Equipment

5-2

.

Troubleshooting

5-3

.Voltmeter

00130-

4

425A

Operating

Diagram

A6,

Chopper

Modulator

Side

Switch

Resistor

Side

.3

MILLIVOLTS

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Waveform
View

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Calibration(1VOLTS

LIST

Title

DC

Microvolt-Ammeter

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425A

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. . . . . . .

.

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425A

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425A. .

ranges). . . . .

. . . . .

. . . .

. . . .

. . . .

through

OFILLUSTRATIONS

Page

. .

1-1
3-0
4-1

.

5-1
5-3
5-3

. .

5-4
5-5

5-6
5-7

LIST

OF

Page

. .

1-0

. . .

5-0

. .

.

5-2

.

5-9

Number

5-8

.Voltmeter

5-9

5-10.Ammeter
5-11.Voltage

5-12.Model
5-13.Function
5-14.Exploded

TABLES

Number

5-4
5-5

6-1
6-2

through

.Voltmeter

(100

VOLTS

and

.

Voltmeter

through
.Ammeter
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.3

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MICROVOLTS

ranges)

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and

425A

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11021A

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Title

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Setup(1VOLTS

MILLIVOLT

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Resistance
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:1

Title

MICROVOLTS

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Parts

ranges)

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Diagram

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.. . . . ....

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. .

. . . . . . .

. ...

. . . .

. . .

. .

...5-9
. ..6-2

Page

.

Page

5-8

5-10
5-12
5-13
5-14

5-14

5-10

6-8

Section
Table

I

1-1

1-1.Specifications

Table

Model

425A

VOLTMETER
Voltage

Accuracy

Input

MICROAMMETER
Current

Accuracy

Input

Range

Positive
end

scale

10

1,

3,

:
Within
variations

1

Positive
microamperes

scaleinan

Within
variationsof±

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_+3%

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megohm

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10pl.a
30

100l.A

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10m1a
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1

3

:

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to1volt

sequence

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of

+5cps

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on

range, 1

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ma

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ma

voltages

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1, 3,10sequence

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to0.33ohm

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edanc

e

1

.000

megohm

1

.000

megohm

1.000

megohm

.000

megohm

1

megohm

1

.000

0.333

megohm

0.100

megohm

0

.033

megohm
megohm

0.010
3300

ohms
ohms

1000

333

ohms

100

ohms

33

ohms

10

ohms

3.3

ohms

1.0

ohms

0.33

ohm

10

microvolt

eleven-step,

frequency

less

than2%.

10

micro-

end

frequency

less than2%.

AMPLIFIER
Output

:

0to1

volt

ohm

shunt

output

Output

Noise

Drift

GENERAL
Power

Dimensions

Impedance
Depends
ohms

when

output

:

Less

than 0

peak-to-peak)

:

After15minutes

perday

115or230

50-cycle

Cabinet

referredtothe input

:

Mount:7-3/8in.

in.(29.83

(Cont'd)

for

end

potentiometer)1ma

:

on

settingofoutput

potentiometer

.2liv

referred

volts

operation

:

cqi)

scale

rms

warmup,

+10%,

also

high,

reading,

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to

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60

available

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12 in.(30

adjustable (5000-

maximum

potentiometer;10

is

set for

the

input

cps,40watts

cm)

less

than1.2

than±4l

wide,

.48cm)

maximum

at

11-3/4

deep

1-volt

pv

.v

AMPLIFIER
Gain:100,

Rejection

AC

At

least
proximately
line

or

greater

000

maximum

:

3

dbat1.0

60dbor

twice-power-line

than

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more

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above60cps;a

frequency

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cps

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power-

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than1%error

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Weight

:
Cabinet
Rack

Accessory

11021A
Probe

volts.Division

10

Mount:Net17lb (7.718

Mount

Available

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increases

megohms

:Net21lb (9

:

425A-21B)

range

of

accuracyt2%,

kg)

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534

kg)

1000:1Divider

Model425A

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1000

resistance

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Model425A

1-1.DESCRIPTION
1-2.The

extremely
voltages
1

picoampere

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due
measurements

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recorders.It

1-3.APPLICATIONS

1-4.The
example,inengineering:itisan
tor ordoamplifier,

Model

sensitive

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on

circuit

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the

chassis

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425A

many

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device

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volt

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input

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425A

are

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ground

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provides

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galvanometer

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INFORMATION

an

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The
page
this
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apply
serial

1

grid

currents

capacitors;in
nerve

potentials

and

chemistry:the
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1-5.DIFFERENCES
1-6

.

TheModel

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manual

changes

directly

number

and
medicine

measurements

actions

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only

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then,isan

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to

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BETWEEN

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Section

Paragraphs

currentsininsulators

and

biology:it

cell

potentials;andinphysics

425Aisusefulinionization

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identifier,
indicate

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INSTRUMENTS

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manual

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1-1to1-6

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Figure 1-1

3

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Z-1.INTRODUCTION
2-2

This

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2-3.UNPACKING

2-4

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2-5.An
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section contains

repacking

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the

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page
electrical

knobs,
the

at

5-46.These

.

and

AND

damage

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with

the

rearofthis

inspection

after

receipt.To

quality-control

SECTION

PREPARATION

informationonunpacking,

installationofthe

INSPECTION

upon

receipt

suchasscratched

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carrier

procedures

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manual

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makeagood

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II

Paragraphs

Section

2-1to2-16

11

FOR

Z-10.POWER
2-11

withathree-conductor

ged

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ment
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2-12.To
erating

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2-13.INSTALLATION
2-14

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POWER

2-7

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2-8

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slow-blow

5-13, for

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REQUIREMENTS

425Aisnormally

power

details

425A
synchronous

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425A

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number

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motor

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9110-0039

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small

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use

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Paragraphs

Section

3-1to3-15

III

3-1.INTRODUCTION
3-2.This

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Paragraphs

Section

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4-1to4-3

4-1.GENERAL

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Table-5-1

V

Table

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Voltmeter

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Paragraphs

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5-14

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INTRODUCTION

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5-2.This
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circuit

Model

output

waveform

of1megohm

amplitudeapproximately

and

test

.

. .

defective

.

RANGE

resistor

toado

oscilloscopetopoint

board.Connect

chassis.See

425A

on

oscilloscope
on

oscilloscope

.

The

frequency

signal

assembly

.

switch

open

signal

and

waveform

5/6

and

defective

.

between1and

where

common

figure

observe

.

power-line

oscilloscope.Replace

.

5-2

modulator

Figure 5-3

having

should

equaltotest

frequency

.

lead

.

input

C4

shows

im-

have

5

is
of

.

5-2

00130-3









Model

INNER

CHASSIS

425A

REAR

SECURING MOUNTING

COLLARS

Figure 5-2

SCREWS

CONNECT

.Modulator

OSCILLOSCOPE

HERE

Assembly

Section

of1megohm
amplitude
and

frequency

located on

.

.

A4,asa

components

modulator

end

closesttoVl

pink

(to

screws

are

located

enter

input-circuit

5-17to5-25

.

repair

the

which

Paragraphs

on

oscilloscope

Waveform

C4

imately

equaltotest

power-line

5-20

.

REPAIR

5-21.INTRODUCTION

.

5-22

This

lems

in the

5-23.CABINET

a.Remove

of

cabinet

b.Slide

remains

ring

5-24.MODULATOR
5-25

.Replace

do

not

attempttorepair

figure

bly

5-2

DisconnectC4

a

.

circuit
the following order,
brown,
point),

letters

red,
yellow,
along

b.Remove
assembly
and

below

container

having

should

frequency

have

peak-to-peak

signal

.

AND

input

impedance

voltage

REPLACEMENT

.

sectionisintendedtosimplify

Model

the

425A

REMOVAL
two

retaining

.

.

screws

.

iDstrument

attachedtofront

forward

outofcabinet

panel

REPLACEMENT

the

modulatorassembly,

individual

and

proceed

as follows

:

andleadsfrom

board;they

C4,

black, black,

starting

orange,

are

connectedtothe

from

input

and

and

black.(Note

edgeofboard.)

the

two

mounting

in

place.These

two

plastic

from

rear

.

rods

screws

which

approx-

5/6

prob-

rear

.Bezel

unit

.See

assem-

board

same

coded

hold

above

V

.

;

in

:

.To

check

outlinedinparagraph

5-17
instructions

5-18.DEMODULATOR
5-19.To

follows

a.Remove
b.Locate

straight
tor

board

c.Remove
sembly.The
terminals

check

:

back

(see figure

in

cabinet

demodulator

from

all

leads

the
lead)toterminal
white

(one

lead)tomiddle

to

terminal

d

.Connect

assembly

e.Connect

and

either

present

measurement

f

.

oscilloscope

(the

outer

a do path

Energize

nearest

adc

two
oscilloscope

.

.Figure

modulator

input

resistance

5-52

ASSEMBLY

demodulator

(paragraph

operation,

5-23)

assembly

the

RANGE

5-4)

connectedtoterminalsofas-

leads

color-coded

are
following
farthest

switch

.

order

frommain

:

purple-white

terminal;and

main

voltage

outer

chassis

between

terminals)

.

land.5volts

.

between
terminal.Oscilloscope
between

Model

its

input

425A

and

5-3

showsatypical

terminals

observe

follow

.

.

proceed

.

.

Itismounted

abovearesis-

and connected

chassis;blue-

blue (one

middle

terminal

must

for

waveform

waveform

the

(one

lead)

across

not

this

as

on

to

Figure5-3

.Modulator

G-S-45

Waveform

00130-4

5-

3





Section
Paragraphs

V

5-26to5-29

Model

425A

c

.

Carefully

force

it
moval
securing

instrument

with
rodsifthey

cuit

paragraph

5-4

out,

.

If

d.Place

the

two

e.Connect

board

Use

heat
Cleanboard

finished

f

.

Check

lift

for

you

must

collars

.

new

mounting

were

external leads

.Use

small

soldering

when

.

Be

new

5-15

.

out the

the

and

assembly

moved

only

solderingtothe

carefully
suretoremove

modulator

modulator

plastic

move

slide

screws.Reposition

rosin-core

the rods,

.

Note

iron

rods

the

in

position

and

and

and

assembly

Figure

assembly

may

hinder

spread

rods

toward

and

C4

to

assembly

solder

.

apply

minimum

circuit

thoroughly

all

solder

as

5-4

.Right

;donot

its

their

rear

secure

the

plastic

board

when

flux

described

.
.

re-

rear

cir-

in

of

it

Side

View

5-26.DEMODULATOR
5-27.To

as

follows

a.Disconnect
b.Remove

assembly

instrument

c.Place

with the

d.Reconnect

5-28

5-29

wire

switch
rect

paragraph

Model

425A

replace

:

the

in

place

.

new

two

mounting

.

RANGE

.Figure5-5

destinations

.The

calibration

5-46

SWITCH

Model

.)

REPLACEMENT

demodulator

the

three

leadstothe

two

mounting

;

remove

assembly

the

three leadstothe

shows

for the

425A

after

the

in

screws

REPLACEMENT

the

replacement
shouldbechecked

replacing

.

assembly,

demodulator

screws

demodulator

position

.

locationofall

this

and

demodulator

.

of

switch

A5,

which

parts

the

proceed

from

secure

RANGE

for

.(See

00130-3

.

hold

the

it

.

and

cor-





Model

425A

Section

V

Figure 5-5

GROUND

00130-3

Figure

5-5.Range

Switch Detail

YEL-RED

GRN-ORN

BLK-WHT
MODULATOR

TO

TO

SI

TO

A4

PIN

3OFVI

LD-M-578

5-5





Section
Paragraphs

V

5-30to5-41

5-30.DISCONNECTING

RESISTOR

.

On

5-31

ped

from

resistor

ing

resistance
megohms

performed

special order,

the

on

.

factory with

disconnected

of

the

all

voltage

in

the

Calibrationofthe

of

the

modified

the

inputisexternally

megohm

5-32.To

as

follows

a.Remove
b.Remove

assembly

c

.Locate

ulator

assembly

the

stripislocated

the

undersideofthe

d

.Cut
not cut
diately

razor

as

a

TO

RESISTOR,
OF

resistor

disconnect

:

.

theindicated

the

narrow

into

the

around

blade

DISCONNECT

REMOVE

CONDUCTOR

cabinet

the

circuit

eyeletsofconducting

the

.

INPUT-SHUNTING

the

Model

the1megohm

from

the

modified

instrument

ranges.Modification

field

.

Note

nine

lowest current

instrumentisaltered

shunted

.

input-shunting

(paragraph 5-23)

cover

plate

from

conductor

boardinfigure
between
board

conducting

two

.

leads

stripateach

leads.Useasharp

INPUT

THIS

SHUNTING

STRIP

425A

willbe
input-shunt-

circuit.Input

exceeds

ranges

unless

with a 1.0

resistor,

proceed

.

the

input-circuit

strip

onthe

5-5.Note

coming

end.Do

material

cutting

tool

ship-

can

mod-

that

from

imme-

such

100

be

e

.

Lift

out the

Be

careful nottolift

material

off

the

narrow

board

5-33.REPLACEMENT

RESISTOR

5-34.The

in

the

instrument

whetheratthe

.

input-shunting

when

factoryorin the

instrumenttostandard,

a.Remove
b.Remove

assembly

c.Locate

assembly

d

.Connect

wire

.Solder

solder

.

5-35.SERVICING

Excessive
conductors

5-36.To

on

component
then be
or the leads
moved,
(metal

clean

awlsorsoldering

conductor)

cabinet

the

cover

.

the indicated

circuit

boardinfigure 5-6

these

two

both

ends

ETCHED

heat or

from

remove

components

sideofboard.New

solderedtothe

can

be

removed

holes with a toothpick or

before

inserting leads

stripofconducting

anyofthe

remaining

.

OF

INPUT-SHUNTING

resistor

the

modification

field.To

proceed

as follows

(paragraph

plate

from

points

points

with a

neatly,

using

CIRCUIT

Note

pressure

etched

circuit

from

leads

extending

.

If

aids

may

.

Model

remains

restore

5-23)

.

the

input-circuit

on

the

.

pieceofcopper

only

BOARDS

can

lift

copper

boards
board,

components

from

the

leads

wooden

destroy

425A

material

conducting

physically

is

made,

the

:

modulator

rosin

core

.

.

leads

clip

can

the

board

are

re-

splinter

the

copper

.

TO

RECONNECT

RESISTOR,

POINTS

Figure

Input-Shunting

5-6

INPUT

CONNECT

.

Connection

SHUNTING

THESE

Point

Resistor

TWO

of

MP-S-1131

5-37.ADJUSTMENTS
5-38.INTRODUCTION

5-39.The

ment
been
of

adjustment

following

procedure

definitely

and

determined

.

5-40.ADJUSTMENT

F

OLLOWER

5-41.The

when

the

cathode

Model

425Aisreceived

alcheckisnecessary

Turn

a

.
b.Set
c.Set

d.Observe

(+5%oofend

e.If

adjust
ure

5-4),toapproximately

response

instrumenton.

FUNCTION

RANGE

meter

scale)

the

meter

R47,

BIAS

to this

does
adjustment

adjustment

.

.

section

should

OF

BIAS

follower

be

that

CATHODE

.

bias

isacomplete

the

thereafter

Allow15minutes

switchtoVOLTAGE

switch

to

.003

.Ifitreads

the

checkiscomplete

not

read

potentiometer

zero
is

slow

made

only

Model

425Aisout

should

.

Onlyan

be

.

.

MILLIAMPERES

approximately

.

approximately

meter.The

.

adjust-

if it

has

checked

occasion-

warmup

zero

zero,

(see

fig-

meter

.

.

5-6

00130-

3

Model

425A

Paragraphs

Section

5-42to5-43

V

5-42.ADJUSTMENT
5-43

.The
in unit
filter
line

may

a.Remove

filter,

b.Connect

between

source
line
power
determinedby

Parts
00130-

twin

which

for

remove

for an

frequency

line

tableinSectionVI.

4

should

eithera60

be adjustedasfollows

two

aharmonic-free

pins 6

frequency

Figure 5-7

OFTWIN-T

filters

screws

cover

and8(ground)offilter.Set

output

for

which

stock

containedina

are

be

removed

cps

power

holding shield-cover

and

pull

frequency

filterisdesigned

foraparticular

number

FILTERS

single

for

adjustment

a

line

:

filter

sinewave

which

as

showninReplaceable

50

or

outofsocket

signalsource

is

5/6ofpower

filter

.Left

.

plug-

.

cps

power

over

signal

.Correct

may

be

.

A

Side

View

c.Connectanoscilloscope or

7

and8of
amplitude
least

d.Maximum
nately adjusting
for

e.Connect
pins3and8on

Model

425A

Instrument
test

signalisnot set

to

correct

filter.Compare

of

60 db

.

minimum

performance

frequency

applied

attenuation

R39

output

between

same

test

filter

Note

may

be

degraded

as

closely as possible

.

vtvm

ac

signal

signal.Attenuation

andR41

signal

.

amplitude here

may

be

obtainedbyalter-

(blue-colored

pins 7

and8.

usedinstep

between

must

controls)

b

between

if

pins

with

be

at

5-7

Section

V

Paragraphs

f .

Connect
and8of
amplitude
least

60 db

g.Maximum

nately

for

adjusting

minimum

h.Plug

cover

.

5-44to5-51

filter

.Compare

of

applied

.

output

filter

oscilloscope

signal

attenuation

R50

and

between

unit into

or ac

vtvm

between

signal

amplitude

.Attenuation

may

be obtainedbyalter-

R52

(red-colored

pins 2

and8.

socket

and

replace

pins 2

here

must

be

controls)

shield

Model425A

with

at

5-44.METER
5-45.To

a.Remove

b.Set

paragraph

c.Turn

warmup

.

d.Check

paragraph

e.Set
f.Set

.

Connect

g
h.Adjust

meter

pointertoexactly+1.0.

i.To

Voltmeter

calibrate

cabinet

mechanical

the

5-6)

.

the

cathode

5-40)

FUNCTION

RANGE

probe

R67

check

Check

CALIBRATION

instrument

.

the

5-46.PERFORMANCE

5-47.INTRODUCTION

.

The

the

instrument

asafinal

following

Model

incoming

Adjustment

5-48
operationofthe

with

be

made

partofthe

complete
5-36

.

.

theModel

(see

425A

paragraph

proceedasfollows

5-23)

adjustmentofmeter

on

and

allow

follower bias

adjustment

switchtoVOLTAGE

1-volt

volt

range

f1%

see

.

do

source

paragraph

switch

to

to

1.0

METER

calibration,

CAL.(see figure 5-4)toset

.

CHECK

.

procedure

425A

the

in

test

for routine

quality

istoverify

and

shouldbeperformed

cabinet.This

maintenance

control inspection

Procedureisgiveninparagraph

.

15

.

check

zero

minutes

.

5-49,

proper

or as

.A

(see

(see

may

:

Figure

g

.Zero

trol

.If

graph

h.Check
rangesby
and
calibrator
IBRATE
will

i.Set
to

DC+,

PLIER

j.Connect

using

5-8.Voltmeter

(1

VOLTS

Model

3-8

meter

.

through.3

of

Model

425A

the1VOLTS

setting

Model

425A

switchesofthe

as

shown

FUNCTION

position.The

remain

in

the

VOLTAGE

voltmeter

FUNCTION

switch

to0,and

Model

the

100:1dividerasshowninfigure

Calibration

MILLIVOLTS

425A

cannot

be zeroed,

through0.3MILLIVOLTS

intable

switch

Mode1425A

calibrator

switchtoCALIBRATE,

RANGE

425A

with

voltmeter

will

position

OUTPUT

switchto1

to

voltmeter

MICROVOLT-

Test

ranges)

panel

ZERO

refertopara-

5-3.The

remaininthe

FUNCTION

.

SELECTOR

5-9

MODEL

AMMETER

Setup

con

calibrator

voltmeter

CAL-

switch

MULTI-

.

calibrator

.

425A

VOLTMETER

5-49

.

5-50.CALIBRATION
as follows

a

.Adjust

5-6)

b.Adjust

5-40)

c.Turn

half-hour

d.Set

to

DC+,

PLIER

e.Connect

:

mechanical

.

Cathode

.

voltmeter

warmup

voltmeter

FUNCTION

switchto0,

Model

showninfigure

f

.Set

Model

and

RANGE

switch

5-8

CHECK

.

.Tocheck

meter

Follower Bias

calibrator

.

calibrator

switchtoCALIBRATE,

and

RANGE

425Atovoltmeter

5-8

.

425A

FUNCTION

to 10

MICROVOLTS

calibration,

zero (see

(see

on

and

OUTPUT

switchto1

switchto

.

proceed

paragraph

paragraph

allowaone-

SELECTOR

MULTI-

.

calibrator

VOLTAGE

as

Figure

(100

MICROVOLTS

k.Repeat

m.Check

VOLTS

ranges

calibrator

voltmeter
the

CALIBRATE

switch

will

5-51.METER

ing,

proceed

a.Connect

as

shown

5-9

.Voltmeter

through10MICROVOLTS

stepsfandg.

100

MICROVOLTS

by

setting

and

Mode1425A

calibrator

FUNCTION

position.The

remain

in

TRACKING

as follows

Model425Atothe

in

figure

5-8

the

:

.

VOLTAGE

.Tocheck

Calibration

through

the

switches

as

shown

switch

Model

voltmeter

Test

10

of

intable

willremainin

425A

FUNCTION

position

the

meter

Setup

ranges)

MICRO-

voltmeter

5-4.The

.

track-

calibrator

00130-

4

Model

425A

(1

Table

VOLTS

5-3.Voltmeter

through.3

MILLIVOLTS

Calibration

ranges)

Section

Paragraph

V

5-52

OUTPUT

SELECTOR

DC+
DC­DC+
DC­DC+
DC-

DC+
DC­DC+
DC­DC+

DC­DC+
DC­DC+
DC-

b.Set

and

voltmeter
TRACKING,

d.Reduce

volt

meter

e.Check

voltmeter

f.Reduce

stepsbyrotating

should

5-52.INPUT

pedance,

Model

RANGE

c.Check

stepsbyrotating

switch

the

calibrator

and

should

the

calibrator

voltmeter

indicate

proceed

the
indicate

IMPEDANCE

425A

FUNCTION

to1VOLTS

positive

FUNCTION

OUTPUT

voltmeter

TRACKING

negative

OUTPUT

the

TRACKING

TRACKING

as

follows

Voltmeter

section

SELECTOR

the

sectiontracking bysettingthe

calibrator

.

Calibrator

MULTIPLIER

1

.

1

.
.1
.1

.1
.1

.01
.01
.01

.01
.001

.001
.001
.001
.001
.001

switchtoVOLTAGE,

.

trackingbysetting

switch

to

calibrator

TRACKING

SELECTOR

voltages

To

:

outputin0.1­control

voltages

output

control.The

+3%

.

check

the

to

1

VOLTS

DC+

.

. The

±3%

.

to

DC-

in 0.1-volt

meter

input

im-

the

.

RANGE

(VOLTS)

1

1

3
3

1

1

3
3
1
1

3
3
1
1 1
.

3

.

3

a.Connecta1M±0.1%resistor
of
calibrator

b.Set

c

DC+,
to2.

d
ZERO

e
1

position

f.The
within
425A

.3VOLT
.3VOLT

.1VOLT

.1VOLT
30
30
10

10

3
3

1

.3MILLIVOLT
.3MILLIVOLT

Model

425A

.
Model

.

Setvoltmeter

MULTIPLIER

.Zero

control

.

Set

voltmeter

.

Model

0 .03

meets

Model

425A

RANGE

I

VOLTS

1

VOLTS

MILLIVOLTS
MILLIVOLTS
MILLIVOLTS

MILLIVOLTS
MILLIVOLTS
MILLIVOLTS
MILLIVOLTS +1
MILLIVOLTS

and

the

upper

terminal

425A

RANGE

calibrator

switchto0,

meterofModel

.

calibrator

425A

volts.This

its1megohm

425A

meter
check determines

+3%

Meter

(+3%of

betweenthe probe

of the

switch

OUTPUT

and

RANGE

with

the

MULTIPLIER

should

specification

indicate

Reading

end

scale)

1

+

-

1

+3

-3

+1

-1

+

3

-

3
1

+

- 1

+

3

- 3

-1
3

+

-

3

voltmeter

to 1

VOLTS

SELECTOR

front

if

the

.

to

switch

panel

to

the

1

volt

Model

.

00130-

OUTPUT

SELECTOR

DC+
DC-

DC+
DC­DC+
DC-

2

(100

Voltmeter

MULTIPLIER

Table

MICROVOLTS

Calibrator

.01
.01
.001
.001
.001
.001

5-4.Voltmeter

through10MICROVOLTS

RANGE

(VOLTS)

Calibration

1
1
3
3
1
1

RANGE

100

MICROVOLTS

100

MICROVOLTS

30

MICROVOLTS

30

MICROVOLTS

10

MICROVOLTS

10

MICROVOLTS

ranges)

Model

425A

Meter

(±3%

of

+

-1

+

- 3

+

- 1

Reading

end

scale)

1
3

1

5-9



Section
Paragraph

OUTPUT

SELECTOR

DC+
DC-

DC+
DC-

DC+
DC­DC+
DC­DC+

DC­DC+
DC­DC+
DC­DC+
DC­DC+

DC­DC+
DC­DC+
DC­DC+
DC­DC+

DC-

V

5-53

Voltmeter

Calibrator

MULTIPLIER

100
100
100
100
100
100
100

100

10
10
10
10

1 3
1 3
1 1
1 1

.
.

.
.
.01
.01
.O1
.01
.001
.001

Table

RANGE

(VOLTS)

1 3

1

1

1

5-5.Ammeter

3
3
3
3
3
3
1

1
3
3
1
1

3
1

1
3
3

1
1
3
3

Series

Resistance

Resistance

100K
100K
300K
300K

1M
1M

1M
1M

1M
1M
1M

1M

1M
1M
1M
1M

997K
997K

990K
990K
967K
967K
900K
900K

667K
667K

Calibration

3

MILLIAMPERES

3

MILLIAMPERES

1

MILLIAMPERES

1

MILLIAMPERES

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MILLIAMPERE
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.1MILLIAMPERE

1

MILLIAMPERE

.

.03

MILLIAMPERE

.03

MILLIAMPERE

01

MILLIAMPERE

.01MILLIAMPERE

.003

MILLIAMPERE

.003

MILLIAMPERE

1

MICROAMPERES

1

MICROAMPERES
MICROAMPERE

.3
.3MICROAMPERE
.1MICROAMPERE
.1MICROAMPERE

30

MILLI-MICROAMPERES

30

MILLI-MICROAMPERES

10

MILLI-MICROAMPERES

10

MILLI-MICROAMPERES

3

MILLI-MICROAMPERES

3

MILLI-MICROAMPERES

RANGE

Model

425A

Meter

(+

3°%ofend

Model

Reading

+3

- 3
1

+

-1

+3

-

3

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- 1

+3

-

3

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- 1

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-

3

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-

1

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-

3

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1

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1

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425A

scale)

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are

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five

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MODEL738AR

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967K=0
900K-0
667K~-0

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Calibration

ranges(1MILLI-MICROAMPERES

check

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IW

I/2W

one-megohm

425A

MICROVOLT-

AMMETER

Test

Setup

input

MODEL

LD-5-612

check

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5-53.AMMETER

a.Setvoltmeter

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Model

DC+,
PLIER

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CROAMPERES

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.

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CALIBRATE,

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voltmeter

Model

ranges

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calibrator

resistorsasshowninfigure 5-10

probe

to

667K

425A

3

MILLIAMPERES

ranges

test

position.The

remain

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425A

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Model

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dashed

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425A

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COPYRIGHT

425A

1957

BY

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425A

A4

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CONTAINER

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4,3,51,53
54

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5-12

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Model

425A

INTRODUCTION

6-1

.

6-2

.This
replacement
numerical

indicates
part,

together

lists

parts
numbers
each

part

section contains

parts

orderoftheir

description

the

with

alpha-numerical

in

and

provides

:

a.Descriptionofthe

below)

.

b

.Typical

code;see

manufacturer

listofmanufacturers

c.Manufacturer's

d.Total

quantity

.

.Table

any

applicable

the following

part

stock

used

inthe

REPLACEABLE

information

6-1

lists

parts

reference

andQ)stock

(see

of

number

instrument(TQ

designators

number

notes

orderoftheirQ)stock

information

listofabbreviations

the

partina

appendix

in

.

SECTION

for

ordering

in

of

.Table

five-digit

.

column)

alpha-

and

each

6-2

on

Paragraphs

Section

6-1to6-7

VI

VI

PARTS

for

order

office

.

each

6-1are

or

(see

part

:

.

6-3.Miscellaneous
listedatthe

endofTable

6-4.ORDERING
6-5.To

orderareplacement

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mapatrearofthis

6-6

.Specify

Model

a

.

b

.

and

Hewlett-Packard

c.Circuit

.

d.Description

parts

INFORMATION

local

Hewlett-Packard

manual

the

following

complete

reference

.

not

indexedinTable

6-2

.

for

information

serial

stock

number

designator

.

part,

address

field

addresses)

numberofinstrument

.

.

e.Recommended
maintenance
(RS

column)

A=
B=
C=
CR=
DL

DS=
E=

a=
by=

bwo=backward

c=
cer=ceramic
cmo=
coef=coefficient

com=common
comp=composition
conn=connection
crt=

dap=

EIA

.y.
°

.'

o

.

assembly
motor
capacitor

diode

=

delay

line

device

signaling

misc

electronic

amperes
bandpass

oscillator

carbon
cabinet

cathode-ray

deposited

=

Tubesortransistors

meeting
Industries'
tion

standards

normally

instrument
within

tubes

and

selected for best
performance

suppliedifordered
by~stock

spare

during

(lamp)

part

wave

only

mount

tube

Electronic

Associa-

will

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in

operating

specifications

transistors

will

be

numbers

one

.

6-7

.To

part

year

quantity

of

for

isolated

complete

service

give
function

REFERENCE

= fuse
=

filter
= jack
=

relay
= inductor

=

meter
=

mechanical

elect=electrolytic

encapsulated

encap=

= farads

f
fxd= fixed

=

germanium

grd=

ground
henries

=
=

mercury

impg=impregnated
incd =

incandescent

ins=

insulation

=

kilo

lin= linear
log=

logarithmictaper

=

;

milli
=

megohms
=

milliamperes

=

micro=10-6

minat=

miniature
mfgl=metal
mfr=

manufacturer

part

(ed)

(ed)

= 1000

taper

3

= 10

film on glass

DESIGNATORS

ABBREVIATIONS

P=
Q=
R= resistor
RT=
S=
T=

mtg=mounting
my=

NC=
Ne=
NO=
NPO

nsr= not

obd=

p=

pc=
pf=

pp
piv

pos=
poly
pot=

rect=rectifier

orderapart

a

complete

and

location

plug

transistor

thermistor
switch
transformer

mylar
normally

neon
normally

negative positive

=

(zero

temperature

coefficient)

separately

replaceable
orderbyde-

scription
peak

printed
board

picofarads

-12

1012farads
peak-to-peak
peak

inverse
voltage
position(s)

polystyrene

=

potentiometer

closed
open

circuit

not

listedinTables

descriptionofthe part

.

V=
W=

X=
XF=

XDS=lampholder
Z=

rot= rotary
rms=root-mean-square

rmo=rack
s-b=

Se=

zero

=

sect =

Si=

sil=
sl=

TiO

2 =

tog=
tol=
trim

twt= traveling
var=

who

6-1

and

and

include

vacuum

tube,

bulb,

photocell,
cable
socket
fuseholder

network

mount

only

slow-blow
selenium

section(s)
silicon
silver

slide

=

time

delay

titanium dioxide
toggle

tolerance

=

trimmer

variable

=

with

=

watts

=

wirewound

= without

optimum

=

selectedatfactory,
average
shown
be omitted)

value

value

(part

wave

may

6-2,

its

neon

etc

tube

.

00130-1



Section
Table

Circuit

Reference

Al,

A3

A4

A5

VI

-6-1

A2

(~W

StockNo.

9110-0039
9110-0038

425A-58B

425A-23C

425A-23B

Table

6-1

.

Index

Assy,

For
For

Assy,

A4

C1
C6thruC8
CRl,CR2

R14

Assy,

Assy,

V7,

by

Reference

Description

"T"

Twin
50

cycle

60

cycle

input

thru

C3

modulator

demodulator:includes,
V8,

XV7

Filter

power
power

amplifier:includes,

Designator

:

operation
operation

#

R18
R73

R81

VRl

thru
thru

Model425A

Note

R20
R79

A6

A7 425A-19A

B1
C1

thru

C3

C4
C5A/B

C6
C7

C8

C9
C10
C11

C12

thru

C14

425A-97A

3140-0013
0170-0030

0150-0014
0180-0012

0170-0017

0170-4021
0170-0017

0160-0013
0160-0005
0160-0054

Assy,

Assy, range

Motor,

C:fxd,
C:fxd,
C:fxd,

C:fxd,

C:fxd,
C:fxd,

C:fxd,
C

C:fxd,
Not

chopper:includes,

B1
DS2

thru

XD

S2

thru

Rl

thru

R22

thru

synchronous

poly,
cer,

elect,2sect,

my,
my,

my,
my,

fxd,

:

my,

paper,

assigned

DS5

XD

S5

switch

R13

R32

0.1pf

0.005

0.01 pf
4700

0.01gft5%,

0.1 pf

0.047

0.01 pf

:

includes,

type:6

±10%,

pf,

20

f5%,

pf

±10%,

t10%,

1Af

±10%,

50

500

vdcw

pf/sect,

400

400

400

400

f20%,

R57
S2

.3V,

vdcw

vdcw

vdcw
vdcw

600

400

AC

vdcw

vdcw

450

vdcw

vdcw

6-2

#

See

introduction

to this

section

00130-2





Model

Reference

C15,
C17
C20

C21
C22

C23
C24
C25

C26A/B
C27

C28
C29,
C31

425A

Circuit

C16

thru

C30

C19

Table

(~W

StockNo.

0160-0026

0160-0030
0160-0039

0170-0019

0160-0007
0170-0022

0180-0024
0180-0028

0160-0004

0170-0022
0150-0073

6-1.Index

C:fxd,
Not

C:fxd,
C:fxd,

C

:

C:fxd,
C:fxd,

C:fxd,
C:fxd,
C:fxd,

C:fxd,
Not

C

:

by

Reference

my,

0.027 p.f±10%,

assigned

paper,2pf

my,

0.27 pf

fxd,

my,0.1
my,

2200

my,0.1
aluminum

elect,2sect,1.
my,0.033

my,0.1

assigned

fxd,

cer,

100

Designator

Description

±20%,

±10%,

1Af

t5%,

200

pf

±10%,

1Af

±20%,

elect,40pf,

lcf

1Af

±20%,

pf

f10%,

600

5K

f10%,

(Cont'd)

#

600

vdcw

200

vdcw

200

vdcw

vdcw

600

vdcw

vdcw

450

vdcw

/Af/sect,15vdcw

600

vdcw

600

vdcw

500

vdcw

Section

Table

Note

VI

6-1

CR1,
CR3

DS1
F1

J1
J2

J3

CR2

thru

DS5

G-29A-74
1882-0005

2140-0012

2110-0007
2110-0008

1250-0039

AC-76J
AC-10C

AC-10D

AC-54B

AC-54F

AC-76J
AC-10D

AC-54B
AC-54F

Diode,
Rectifier,

Lamp,

Fuse,
Fuse,

Connector,

Binding
Binding

Binding
Insulator
Insulator:outside

Rack
Binding
Binding
Insulator:inside

Insulator

zener

metallic

minat:0

cartridge:s-b,1amp

(for

115

V

operation)

cartridge

(for

230Voperation)

input

receptacle

post
post:black (rmo)

post:red

:

Mount

post

post:red

:

:

triaxial

and

inside

Only

and

outside

.15

amp,

s-b,

panel

ground

ground

6.3

V

1/2

amp

jack

:

link:black (cmo)

link:black

M1

00130-2

G-81E

#

Meter,

See

introduction

calibrated

to this

section

6-3





Section
Table-6-1

VI

Table

Circuit

Reference

p1

Rl
R2

R3
R4

R5
R6

R7
R8 425A-26H

R9
R10

R11
R12

R13

R14

R15

(~W

Stock

8120-0050
0757-0015

0757-0013
0757-0008
425A-26A

425A-26D

425A-26F
425A-26G

425A-26I
425A-26J

425A-26K
425A-26L

425A-26M
0687-3321

6-1

No

.

.

Index

Cord,

R:fxd,
R:fxd,
R

:

R:ww
R

:

R:ww
R

:

R

:

R

:

R:ww

R

:

R

:

R

:

R

:

Not

by

Reference

power

mfgl,
mfgl,

fxd,

mfgl,34.5K

ww

ww
ww
ww

ww
ww

ww

fxd,

comp,3.3K

assigned

Designator

Description

500K

ohms

111K

ohms

ohms

ohms

(Cont'd)

#

fl/2%, 1/2
tl/2%, 1/2

fl/2%, 1/2

±10%,

1/2

Model

W
W

W

W

425A

Note

R16
R17

R18
R19

R20
R21

R22

R23

R24
R25

R26
R27
R28

R29
R30

R31

R32
R33

0687-6851

0727-0240

0687-2251
0687-4741

0687-1531
0687-5641
0687-2741

0687-1541
0687-4731

0687-1531
0687-4721

0687-1521
0687-4711
0687-2211

0687-6811
0687-3311
0687-4741

fxd,

R

:

Not

assigned

R:fxd,

fxd,

R

:

fxd,

R

:

R:fxd,

fxd,

R

:

R:fxd,

fxd,

R

:

R:fxd,

fxd,

R

:

fxd,

R

:

R:fxd,

fxd,

R

:

fxd,

R

:

fxd,

R

:

fxd,

R

:

R:fxd,

comp,6.

c,

dep

comp,2.2M
comp,

comp,
comp,

comp,
comp,150K
comp,

comp,
comp,4.7K

comp,1.5Kohms
comp,
comp,

comp,
comp,

comp,

405K
470K

15K
560K

270K
47K

15K

470

220

680
330

470K

8M

f10%,

ohms

f10%,

ohms

ohms

ohms
ohms
ohms

ohms

ohms

ohms

ohms
ohms

ohms
ohms

ohms

1/2

tl%,

1/2

±10%,

f10%,

±10%,
±10%,

±10%,

±10%,
±10%,

±10%,
±10%,

±10%,
±10%,

±10%,
±10%,

±10%,

W

1/2

W

1/2

1/2
1/2

1/2

1/2

1/2
1/2

1/2

1/2
1/2

1/2

1/2

1/2

1/2

W

W

W

W
W

W

W
W

W

W
W
W

W
W

W

6-4

to

this

#

See

introduction

section

00130-1





Model

Reference

R34
R35

R36
R37

R38
R39

R40

R41
R42,

R44
R45

R46

425A

Circuit

R43

Table

(~W

StockNo.

0687-4731
0687-5621

0687-1061
0687-4741
0687-2251

0687-1021
0687-1041

0687-3921

6-1.Index

R

:

R:fxd,
R:fxd,

R:fxd,
R:fxd,

R:var,
Not

R

:

Not
R:fxd,
R:fxd,

R:fxd,

by

Reference

fxd,

comp,
comp,5.6K

comp,
comp,
comp,2.2M

partofAl

assigned

var, partofAl

assigned

comp,
comp,

comp,3.9K

47K

IOM

470Kohms

1K

100K

Designator

Description

ohms

ohms

±10%,

ohms

f10%,

f10%,

f10%,

ohms
ohms

(Cont'd)

#

f10%,
1/2

+10%,

1/2

±10%,
±10%,

W

1/2

1/2

W

1/2

1/2

1/2
1/2

Section

Table

W

W

W

W

W
W

VI

6-1

Note

R47
R48

R49
R50
R51

R52
R53,

R55,
R57

R58
R59

R60
R61

R62
R63

R64
R65
R66

R67
R68

R54
R56

2100-0053
0687-6851
0687-8231

0687-2261
0687-6841

0757-0017

0757-0014
0757-0010

0757-0007
425A-26C

425A-26E

425A-26B
425A-26H

0687-2221
2100-0005
0727-0077

var,

R

:

R:fxd,
R:fxd,

var,

R

:

Not

assigned

R:var,

assigned

Not

fxd,

R

:

R:fxd,
R:fxd,

R:fxd,
R:fxd,

fxd,

R

:

R:ww

ww

R

:

R:ww
R:ww

R:fxd,
R:var,
R:fxd,

ww,

10K

ohms
comp,6.8M
comp,

part

partofA2

comp,
comp,

mfgl,

mfgl,
mfgl,

mfgl,32.3K

comp,2.2K

ww,

dep

of

lin,

c,

82K

A2

22M
680K

1M

332K
99K

500

fl/2%,

2K

f10%,

ohms

±10%,

ohms

ohms

ohms

ohms

ohms

ohms

ohms

1/2

W

±10%,

1/2
±10%,

1/2
tl/2%,

fl/2%, 1/2

±10%,

±10%,

1/2

W

1/2

W

1/2

fl/2%,

1/2

±10%,2W

1/2

W

1/2

W

W

W

W

W

W

00130-1

#

See

introduction

to this

section

6-5



Section
Table.6-1

R69
R70

R71
R72

R73

R74,
R76

R77
R78

R79

R80
R81
R82
R83

R84

VI

Circuit

Reference

R75

Table

~

StockNo.

2100-0006
0687-1031
0770-0002
0693-8211

0687-8231

0686-1055
0687-2221
0686-8225

0686-1035

0686-2245
2100-0074

0687-1051

0693-1801
0687-4741

0693-1521

6-1

.

Index

R:var,
R:fxd,

R:fxd,2.4K
R

:

fxd,

R:fxd,

R:fxd,
R:fxd,

R:fxd,
R

:

fxd,

R:fxd,

R:var,

R:fxd,
R:fxd,
R:fxd,
R:fxd,

by

Reference

ww,

comp,
comp,

comp,
comp,

comp,2.2K
comp,

comp,

comp,

comp,

comp,

comp,
comp,
comp,

Designator

Description

5K

ohms

1OK

ohms

ohms

t5%,4W

820

ohms

82K

ohms

1M

f5%,

8

.2K

1OK

ohms

220K

lin,

1M

1M

f10%,

18

ohms

470Kohms
1

.5K

±10%,

1/2

ohms

ohms
ohms

t30%,

±10%,2W

ohms

f10%,

±10%,

±10%,

W
±10%,
t5%,

f5%,

f5%,

1/2

±10%,
±10%,

(Cont'd)

#

3

W

1/2

2

W

1/2

1/2

1/2

1/2

1/2

W

1/4

W

1/2

2

W

Mode1425A

Note

W

W

W

W

W

W

W

R85
R86

S1
S2

S3
TI

V1
V2
V3

V4
V5

V6
V7,

VR1

XD

S1

XDS5

V8

thru

0687-1021

0727-0158

3100-0157

3100-0158
3101-0001

9100-0094
1932-0033

1932-0030

1932-0027
1930-0016
1940-0007

1940-0004
G-30B

2140-0008

1450-0022

R:fxd,
R:fxd,

Switch,
Switch,

Switch,
Transformer,
Tube,

Tube,
Tube,

Tube,
Tube,

Tube,
Cell,

Lamp,

Lampholder

comp,
dep

rot:2
rot:18

tog

electron:9
electron

electron:9
electron:7

electron:7
electron:7

photoconductive

neon

1K

c,10.1K

pos,1sect

pos,

:

SPST,

power

:9pin,

ohms

250

pin,
pin,

pin,
pin,

pin,

ohms

5

sect

5751WA
12AX7

12AT7
6X4
OB2

OA2

±10%,

V, 3

±1%,

amp

1/2

1/2

W

W

6-6

#

See

introduction

to this

section

00130-1





Model

Reference

XF1
XV1

XV4
XV7

XV8
XV9

425A

Circuit

thru

thru

XV3
XV6

Table

1400-0084
1200-0003

1200-0017

G-83P

1200-0005

G-74
G-74D

G-74N

6-1.Index

StockNo.

by

Reference

Fuseholder
Socket,

Socket,
Holder,

Not
Socket,

Knob,
Knob,

Knob,
Knob,

Knob,

tube:9
tube:7

photocell

assigned

tube:8 pin

ZERO

AMPLITUDE

FUNCTION
RANGE

FUNCTION

Designator

Description

minat

pin,
pin,

minat

MISCELLANEOUS

3/4"

bar,

:
:

black

:

3/4"
bar,

3/4"

skirted,

:

:

(Cont'd)

#

black (rmo)

black,
skirted

w/arrow

w/arrow

(rmo)

(cmo)

Section

Table

Note

VI

6-1

425A-21A

10010A

425A-97A-5
1450-0020

Assy,
Assy,

(See

of

Light

Jewel

probe

probe,

Figure

other

rod:modulator

(complete)

outer

5-14

probe

parts)

sleeve

for

and

identification

jaw

assembly

00130-2

# See

introductiontothis

section

6-7





Section
Table

Stock

AC-10C

AC-10D

AC-54B
AC-54F

AC-54F

G-29A-

G-30A
G-30B

VI

6-2

No

74

.

Binding
Binding
Binding

Insulator:inside
Insulator

Insulator:outside
Insulator:outside

Diode,

Cell,
Cell,

post:black (rmo)
post:red
post

:

zener

photoconductive
photoconductive

Table

Description

(rmo)

:

red

(cmo)

(cmo)

inside

(rmo)

(cmo)
(rmo)

6-2.Replaceable

#

Parts

Mfr

28480
28480

28480

28480
28480

28480
28480

28480

28480

28480

.

Mfr.Part

AC-10C
AC-10D

AC-10D

AC-54B
AC-54B

AC-54F
AC-54F

G-29A-74

G-30A
G-30B

No

Model

.

T

1
4

2
1

2 1
1

2 1

2 2

2
2

425A

RS

1
2

1
1
1

2

1

G-74
G-74D
G-74N

G-76J

G-81E

G-83P

425A-19

425A-21

Knob,
Knob,

Knob,

Knob,
Binding

Meter,

Holder,

Assy, range

Assy,

ZERO

AMPLIFIER

FUNCTION

w/arrow

RANGE

calibrated

thru

R1

thru

R22

probe

(See

Figure

probe

of

post

photocell

:

3/4"

black

3/4'1black(rmo) 28480

:

:

3/4"

(cmo)

bar,

:

and
(cmo)
(rmo)

switch, includes

R13 R57

R32

(complete)

5-14

parts)

skirted,

ground

S2

for

black,

w/arrow

:

link

identification

black

:

28480
28480

28480
28480

28480

28480

28480
28480

28480

G-74
G-74

G-74D

G-74N
G-76J

G-81

G-83P

425A-19A

425A-21A

425A-21A-95

1
1
1

1
1 0

1

2 1
1

1 1
1 1

1 1

0
0

0

0

1

1

425A-23B

6-8

Assy,

V9,

demodulator

V10

:

See

#

includes,

XV9

introduction

to this

28480

section

425A-23B

1

1

00130-2





Model

Stock

425A-23C

425A-26A
425A-26B

425A-26C
425A-26D
425A-26E

425A-26F
425A-26G

425A-26H
425A-26I
425A-26J

425A

No

Section

Table

Table

.

Assy,

C101
R101

R:ww

ww

R

:

R:ww

ww

R

:

ww

R

:

ww

R

:

ww

R

:

R:ww

ww

R

:

R:ww

Description

modulator

thru

C103

thru

R106

6-2.Replaceable

#

includes,

:

V7,

V8

Parts

28480

28480
28480
28480

28480
28480

28480
28480
28480

28480
28480

Mfr

(Cont'd)

.

Mfr.Part

425A-23C

425A-26A
425A-26B

425A-26C
425A-26D
425A-26E

425A-26F
425A-26G

425A-26H
425A-26I

425A-26J

No

.

T RS

1

1 0
1 0
1

1
1

1
1
2 0

1
1

1

0
0

0

0
0

0
0

VI

6-2

425A-26K
425A-26L

425A-26M
425A-26N

425A-58B

425A-97A

425A-97A-

5

0150-0014
0150-0050

0150-0073
0160-0004

0160-0005

ww

R

:

R:ww
R:ww

ww

R

:

Assy,

C1
C6

CR1,
R14

Assy,

B1
DS2

XDS2

Light

C:fxd,
C:fxd,

fxd,

C

:

C:fxd,

fxd,

C

:

amplifier:includes,

input

thru

C3

thru

C8

CR2

chopper:includes,

thru

DS5

thru

XDS5

modulator

rod

:

033

pf

pf,

pf,

f10%,

j,f

cer,0.005

1000

cer,
cer,

100

my,0.
my,0.0471.f

R18
R73

R81

V

R1

500

600

±10%,
±10%,

thru
thru

vdcw

vdcw

500

600
600

R20
R79

vdcw

vdcw
vdcw

28480
28480

28480
28480

28480

28480

28480

04222
OOORR

56289

56289

56289

425A-26K
425A-26L

425A-26M
425A-26N

425A-58B

425A-97A

425A-97A-5

D1-4
Type

40C20OA2
160P33396

160P47396

E

1 0
1 0
1 0

1

1 1

1

2 1

1 1
1

2
1 1
1

0

1

1
1

1

00130-1

See

#

introduction

to

this

section

6

-9





Section
Table

Stock

0160-0007
0160-0013

0160-0026
0160-0030

0160-0039
0160-0054

0170-0017
0170-0019

0170-0021

0170-0022
0170-0029

0170-0030
0180-0012

0180-0024 C:fxd,

0180-0028

6-2

No

VI

.

C:fxd,
C:fxd,
C:fxd,

C:fxd,
C:fxd,

C:fxd,

C:fxd,

fxd,

C

:

C:fxd,
C:fxd,
C:fxd,

C:fxd,
C:fxd,

450

450

C:fxd,

15

Table

Description

my,0.022
my,0.1

my,0.027

paper,

my,0.27

paper,0.01

my,0.01pf
my,0.1
my,
my,

poly,0.01
poly,

elect,2sect,

vdcw

aluminum

vdcw

elect,2sect,

vdcw

2

4700

0.1 pf

0.1 pf

6-2.Replaceable

#

pf

pf

pf

pf

pf

1Af

pf

1Af

elect,

f10%,

f10%,

f10%,

t20%,

±10%,

pf
f5%,

t5%,

f10%,

t20%,

f10%,

±10%,

20

1.5K

400

200

f20%,

400

200

600

pf/sect,

40

600

600

200

vdcw

400

50

50

IA,

pf/sect,

vdcw

vdcw

vdcw

400

vdcw

vdcw

vdcw

vdcw

vdcw

vdcw

vdcw

vdcw

Parts

56289
56289

56289
82376

56289

56289
84411
56289

84411
09134
56289

56289
00853

56289

56289

Mfr

(Cont'd)

.

160P22296
160P10494

160P27396
MQCS-2-2M

160P27492

114P
PL1

D32441

D32442

Mfr.Part

109P10304
6205

192P10452
620S
27

1141P039R5S2

No

Model

.

T RS

1
1

2

1 1
1 1

1
2

1 1
1
2

1

3

1

1

1

425A

1
1
1

1
1

1
1
1

1
1

1

1

0686-1035
0686-1055

0686-2245
0686-8225

0687-1021

0687-1031
0687-1041

0687-1051
0687-1061

0687-1521

0687-1531
0687-1541
0687-1841

0687-2211
0687-2221

0687-2251
0687-2261

R:fxd,

fxd,

R

:

R:fxd,
R:fxd,

R:fxd,

R:fxd,

fxd,

R

:
R:fxd,
R:fxd,

R:fxd,

fxd,

R

:
R:fxd,

R:fxd,

fxd,

R

:
R:fxd,

R:fxd,
R:fxd,

comp,
comp,
comp,

comp,
comp,

comp,
comp,

comp,
comp,
comp,

comp,
comp,
comp,

comp,
comp,

comp,
comp,

10K

ohms

1M

f5%,

220K

8

.2K

1Kohms

10K

ohms

100K
1M

±10%,

10M

±10%,

1

.5K

15K

ohms

150K

180K
220

ohms

2

.2K

2

.2M

22M

±10%,

ohms

ohms

ohms

ohms

ohms
ohms

ohms

±10%,

f5%,

1/2

f5%,
t5%,

±10%,

±10%,

±10%,

1/2

1/2

±10%,

±10%,

±10%,
±10%,

±10%,

±10%,

1/2

W

1/2

1/2

W

01121
01121

1/2

W

01121

1/2

W

01121

1/2

W

01121

1/2

W

01121

1/2W

W

W

1/2W

1/2

1/2W
1/2W

1/2

1/2W

W

W

01121
01121

01121
01121

W

01121
01121

01121

W

01121
01121

01121
01121

EB1035
EB1055

EB2245
EB8225
EB1021

EB1031
EB1041

EB1051
EB1061
EB1521

EB1531
EB1541

EB1841
EB2211
EB2221

EB2251
EB2261

1
2

1
1

2

1

1 1

1
1
1

2
1

1 1

1 1

2

2
2

1
1

1
1
1

1

1
1

1

1
1

1

1
1

6-10

See

#

introduction

to this

section

00130-2





Model

0687-2741
0687-3311

0687-3321

0687-3341

0687-3921
0687-4711
0687-4721

0687-4731
0687-4741

0687-5621
0687-5641
0687-5651

0687-6811

425A

StockNo.

fxd,

R

:

R:fxd,

fxd,

R

:

R:fxd,

fxd,

R

:

R:fxd,
R:fxd,
R:fxd,

R:fxd,

fxd,

R

:

R:fxd,
R:fxd,

fxd,

R

:

Table

Description

comp,270K
comp,

comp,

comp,330K
comp,3.9K

comp,
comp,4.7K

comp,

comp,
comp,

comp,
comp,5.6M

comp,

330

3.3K

470
47K

470K
5

.6K

560K
680

6-2.Replaceable

#

ohms

ohms

ohms
ohms

ohms

ohms

ohms

ohms

ohms
ohms

ohms

±10%,

ohms

±10%,

f10%,

f10%,

±10%,
±10%,

±10%,

±10%,

±10%,

t10%,
f10%,

f10%,

1/2

±10%,

1/2W

1/2

1/2W
1/2W

1/2W

1/2

1/2W

1/2W

1/2W

1/2W

1/2W
W
1/2

W

W

W

Parts

Mfr

01121
01121

01121
01121

01121
01121

01121
01121

01121
01121

01121
01121
01121

(Cont'd)

.

Mfr.Part

EB2741
EB3311

EB3321

EB3341
EB3921

EB4711
EB4721

EB4731
EB4741

EB5621
EB5641

EB5651
EB6811

No

Section

Table

.

T

RS

1 1

1

1

1

1

2

1

1

1

1

1

1

1

2

1

4

1

1 1
1 1
1 1

1 1

VI

6-2

0687-6841
0687-6851
0687-8231
0693-1521

0693-1801

0693-8211
0727-0077
0727-0158

0727-0240
0727-0274

0757-0007
0757-0008
0757-0010
0757-0013

0757-0014

fxd,

R

:

R:fxd,
R:fxd,
R:fxd,

R:fxd,

R:fxd,
R:fxd,

R:fxd,
R:fxd,
R:fxd,

R:fxd,

1/2

R:fxd,

1/2

fxd,

R

:

1/2

R:fxd,

1/2

R:fxd,

1/2

comp,

comp,
comp,
comp,1.5K

comp,

comp,
dep

dep
dep
dep

mfgl, 32

W

mfgl,34.5K

W

mfgl,

W

mfgl,

W

mfgl,

W

680K
6

82K
18

820

c,

500
c,10.1K
c,

405Kohms

c,

1M

99K

111K
332K

.8M

.3K

ohms

ohms

ohms
ohms

fl%,

ohms

ohms
ohms

ohms

f10%,

ohms

f10%,

ohms

ohms
ohms

±10%,

1/2

±10%,

t10%,2W

2

±10%,2W
±10%,

fl%,

fl%,

1/2

W
fl/2%,
±1/2%,

fl/2%,

±1/2%,

fl/2%,

1/2W

W

1/2W

W

1/2W

1/2W

1/2

W

01121
01121

01121
01121

01121
01121

19701
19701

19701
19701

65092
65092
65092
65092

65092

EB6841
EB6851
EB8231

HB1521
HB1801

HB8211
DC1/2BR5

DC1/2CR5
DC1/2CR5

DC1/2AR5

9851
9851
9852B

9852B
9852B

obd#
obd#
obd#

obd#

obd#

obd#
obd#
obd#

obd#

1 1
2 1

2

1
1 1

1
1

1
1

1

1
1

1 1
1
1

1
1

1
1

1
1
1

1

1

1
1

00130-1

# See

introduction

to this

section

6-11



Section
Table

6-2

Stock

0757-0015

0757-0017
0770-0002

1200-0003
1200-0005

1200-0017
1250-0039

1400-0084
1450-0020

VI

No

.

R:fxd,
R:fxd,

R:fxd,2.4K
Socket,

Socket,

Socket,

Connector,

Fuseholder

Jewel

mfgl,

1/2

W

mfgl,

tube:9
tube:8 pin

tube:7

Table

Description

triaxial
input

500K

f1/2%, 1/2

1M

ohms

pin,
pin,

receptacle

6-2

ohms

f5%,4W

panel

.

Replaceable

#

f1/2%,

minat

minat

jack

Model

Parts

W

:

Mfr

65092
65092

07115

71785
71785

71785

91737

75915
72765

(Cont'd)

.

Mfr.Part

9852B
9851

LPI-4

121-39-12-013
101-29-11-024

111-39-11-014

5632B

342014
14L-15

No

obd#

obd#

.

T

1 1
1 1

1 1

3

1
3 1

1

1 1
1

425A

RS

1

1
1

0

1450-0022

1882-0005

1930-0016
1932-0027

1932-0030
1932-0033

1940-0004
1940-0007

2100-0005
2100-0006

2100-0053
2100-0074

2110-0007

110-0008
140-0008

140-0012

Lampholder

Rectifier,
Tube,

Tube,
Tube,
Tube,

Tube,
Tube,

R
R
R

R

Fuse,

Fuse,

Lamp,
Lamp,

electron:7

electron

electron
electron:9

electron
electron

var,

:

var,

:

var,

:

var,

:

cartridge:s-b,1amp

(for

cartridge:s-b,

(for

Ne

minat

metallic

pin,

9

pin,

:
:9pin,

pin,

:7pin,

7

pin,

:

ww,

lin,

2K
ww, 5K
ww,

comp,

115

230Voperation)

ohms

IOK

lin,

operation)

V

0.15

:

ohms

1M

amp,

6X4
12AT7

12AX7
5751WA

OA2
OB2

ohms

±10%,

1/2

f10%,2W

t30%,

amp

6.3

3

1/4

V

72765
81483

86684

33173

86684

33173

86684
86684
11237

W

71590 21-010-357
11237

W

11237
71400
75915

24455
24455

2020-AE
61-6911

6X4
12AT7

12AX7
5751WA
OA2

OB2

252

252

45

MDLl
obd#

NE2
GE-12

5

1 1

1
1 1

1

1 1
1 1

1 1

1 1
1 1

1 1
1 1

1

1 1
5 5

1

1

1

10

6-

12

#

introduction

See

to this

section

00130-1





Model425A

StockNo.

3100-0157

3100-0158
3101-0001

3140-0013

8120-0050

9100-0094 Transformer,
9110-0038

9110-0039

Switch,
Switch,

Switch,

Motor,

Cord,

Assy,

Assy,

rot:2 pos, 1 sect
rot:18
tog:SPST,

synchronous

power

Twin
for

Twin"T"

for

Table

Description

pos,

power

"T"

Filter

cycle

50

Filter

60 cycle

6-2.Replaceable

#

5 sect

250

type:6.3

power

power

V,

:

operation

:

operation

3

amp

V,

AC

Parts

Mfr

76854
76854

04009

73061

70903

98734

71590

71590

(Cont'd)

.

Mfr.Part

188051-JlC
187980-DL5X

AH&H

Synchron

CS-9941/PH-

7637

obd#

obd#

No

80994-H

model

610

(6

.3 V)

151/7.5ft.

Section

Table

.

T

RS

1 1
1 1

1 1

1 0

1

1

1

1

1 1

1

1

VI

6-2

10010A

Assy,

probe, outer sleeve

and

jaw

28480

10010A

1

1

00130-2

#

See

introduction

to this

section

6-13

















































































Model

Appendix

425A

APPENDIX

The
and

the

following

H4-2

(CodetoName)

bottom

of

code

numbers

each

page.Alphabetical

are

and

CODE

from
their

LIST

the

Federal

supplements.The

latest

codes

MANUFACTURERS

OF

Supply

have been

Code

for

date

arbitrarily

(Sheet1of 2)

Manufacturers

of revision

assignedtosuppliers

Cataloging

and

the

Handbooks

dateofthe

not

appearingintheH4handbooks

H4-1

supplements

(NametoCode)

used

appear

at

.

CODE

NO.MANUFACTURER

0 3

3 4HumidialCo.

0
00335

Westrez

Corp

0 0 373Garlock
00

00779
00781

00815

00853
00866

00891
01121
01255

01281
01

01
01561

01
01930

01
02114

02286
02660

02735

0
02777
03508G.E.Semiconductor
03705

03797
0
0 3

03954
04009

04062
0422

04298
04404
04651
04713
04732
04773

04796
04870

05006
05277
05347

05593
05624

05729
05783

06004
06555

0 681

Electronic

Aerovox

656

Amp,
Aircraft

Northern
Sangamo

Ordill

Goo
Carl

Allen

Litton

Pacific

295

Texas

Transistor

349

The
Chassi-Trek

589

Pacific Relays,

Amerock

961

Pulse
Ferroxcube

Cole
Amphenol-Borg

Radio

Semiconductor

2771VocalineCo.ofAmerica,

Hopkins

Apex
Eldema

3877

Transitron Electronic

688

Pyrofilm
Air

Arrow,
Elmenco

2Hi-Q

Elgin

Electronics Division

Dymec

Hewlett-PackardCo.Palo

Sylvania

Electronic

Motorola,

Prod.Div

FiltronCo.,

Western

Automatic
SeGuoia

Company

P.M.Motor
Twentieth

Westinghouse

Semi-Conductor

Ultronix,
Illumitronic

Barber
Metropolitan

Metro

Stewart

The

Beside

2Torrington

.

PackingCo.,

Products

Corp

.

Inc

.

Radio

Corp

Engineering
Electric

Company,

Division

EngineeringCo.Los

E.Holmes

Alliance

EngineeringCo.

Mfg.Co

Marine

National

BassickCo.

Corp

BradleyCo.

Industries,

Instruments,

Corp.of

Machine3ToolCo.

Division

Electrical

Inc.Beverly

Semiconductors,

Products

Mfg.Co

Corp

.

Inc

Corp

.

Corp.of

.

Electronics

America

and

EngineeringCo.

Corp

.

ResistorCo.

Motors,

Hart and

Hegeman

ProductsCo.New

Aerovox

of

WatchCo.,

Division of

Electric

Prods.,Inc

Tube

Inc.,Semiconductor

.

Inc

.

DivisionCulver

ElectricCo.

&

Cable

Wire

.

Co

Century

Electric

Inc

.

EngineeringCo.

ColmanCo.

Telecommunications

Cap.Div

EngineeringCo.Santa

InstrumentCo.,

Mfg

.Co.,

ADDRESS

Colton,

York,N.Y

New

Div

.Camden,N.J

New

Bedford,

Harrisburg,Pa.

.

(Capacitors)Marion,

Inc

.

America

Products

Corp.Wakefield,

Inc.Los

Div

Plastics, Inc

Dept

.

Boonton,N.J

Laboratories,

.Los

Inc

.

Div

.

.

Materials Div

Old

San Fernando,

.Mountain

Redwood

Corp

.Youngwood,Pa.

West

Inc

Burlington,

Angeles,

Angeles,

Milwaukee,

Hills,

.

Culver

City, Calif

Dallas,

Alliance,

Indianapolis,

VanNuys,Calif

Rockford,

Santa

Clara,

Saugerties,N.Y

Palo

Alto,

Corp

.

Chicago,

.

Somerville,N.J

Inc

.
Saybrook,

Dept

.

Syracuse,N.Y

Dayton,

El

Monte,

Morristown,N.J

Angeles,

Elect.Co

.

Hartford,

York,N.Y

Myrtle Beach,S.C

Burbank,

Alto,

.

View, Calif

Phoenix,

City,

Northlake,

City,

Chicago

.

Los

Angeles,

.,

San Mateo,

Sunnyvale, Calif

Rockford,

Corp

Brooklyn,N.Y

Cruz, Calif

Bridgeport,

Inc

.

Penacook,N.H

Div

.

Van

Nuys, Calif

00015-26

Arizona

Revised:10 July 1962

Calif

Mass

.

Wis

Ill

Calif
Calif

Wis

Calif

Texas

Ohio

Ind

III

Calif

Calif

III.09569

Conn

Calif

Ohio

Calif

Mass

Calif
Conn

Calif
Calif

Calif

III

Calif

44,

III

Calif

Calif

III

.,

Conn

CODE

NO

.

MANUFACTURER

.07115
.

.
.

.
.

.
.

.
.

.

.

.
.

.
.

.

.

.
.
.

.

. 1

.
.

.

.

.1

.
.
.
.

.

.

.

.
.

.
.

.
.26992

.284-8 0
.

.3
.

Corning Glass

07126

DigitranCo.

07137

Transistor

07138

Westinghouse

07261

Avnet

07263

Fairchild

07910

Continental

07933

Rheem

07966

ShockleSemi-Conductor

07980

08

08358
08717

08718

08792

08994
09026

09134
09250

10214
1

1
1 123 6

1
11312Microwave

11711General
11717Imperial

1 1

12697

15909

16688

16758

18873
19315

19500

19701
20183

21520
21335

21964
24446

24455
24655

26462

3 3 1 7 3
35434

3 954 3

Laboratories

Boonton

145U.S.EngineeringCo.

Burgess

Sloan

Cannon

Phoenix

CBS

Operations,

Mel-Rain
Babcock

Texas

Electro
Mallory

Canada,

General

0411

Ti-Tel,
CarborundumCo.

0646

CTSofBerne,

1 237

Chicago

1 5

3 4

Duncan

Semiconductor

870

Melabs,
Clarostat

4655

Cornell
The

De

Delco

E

. 1 .

Eclipse

Bendix

ThomasA.

Div.of

Electra
Electronic

Fansteel
The

Fed.Telephone
General

G.E.,
General

Grobet
Hamilton

Hewlett-PackardCo.Palo
G.E.

Lectrohm

7942

P.R.Mallory3Co
Mechanical

Electronic

Electronic

Jur-Amsco

Works

Components

Electronics

Electric

Div

Tube

Corp

.

Semiconductor

Device

Semiconductor

y

Radio

Battery

Company

ElectricCo.

Electronics

Relays,

CapacitorCo.

Assemblies,

BatteryCo.

Transistor

Inc

Telephone of

Electronics,

Instrument

Electronics,

Inc

Dubilier Elec.Corp

DavenCo.

Radio Div.ofG.M.

DuPont

Pioneer,

ManufacturingCo.Kansas

Metallurgical

Fafnir

Electric

Lamp

RadioCo.

FileCo.

Receiving

Corp

Corp

.

Co

Niagara

Div

.

Semiconductor

Div.ofC.B .S.Inc

Inc

.

Inc

of

Ltd.Toronto,

Western

.

Inc

.

Electronics

Inc.Santa Ana,

Corporation

Division

.

Mfg.Co

.

Corporation

andCo.,

Div.of

Aviation

Corp

Edison

Industries,

McGraw-EdisonCo.

Tube

Corp

BearingCo.New

and

Radio

Co

.

Division

Nela

of America,

WatchCo.

Tube Dept

Inc

.

.,

Industries

ADDRESS

Dept

.

Bradford,Pa.

Pasadena,

Corp

.

Minneapolis,

Corp

.

.

Los

Corp

Mountain

.

Hawthorne,

Corp

.

Mountain

.

Los

Falls,

Ontario,

Indianapolis,

Costa Mesa,

.

Ontario,

Corp

Los

Niagara

California,

So.Pasadena,

Corp

.

Palo

Inc.Buena

Palo

.

So.Plainfield,N.J

Long

Island

Inc.Wilmington,

.Teterboro,N.J

West

.Philadelphia,Pa.

Corp

.
No.Chicago,

Corp

Schenectady,N.Y

Park,

West

.Owensboro,Ky.

Inc.Indianapolis,

Prod.Co

From:F.S.C.Handbook

Calif

Minn

Elmira,N.Y

Angeles,

Calif

.

View, Calif

Calif

View, Calif

Palo

Alto,

Calif

Boonton,N.J

Angeles,

Calif

Canada

Burbank,

Calif

Phoenix, Ariz.65092

.

Lowell,

Mass.70276

Calif

Houston,

Texas

Chicago,

Canada

.

Angeles,

Calif

Berkeley,

Calif

Falls,N.Y.71218

Berne,
Inc

.

Calif
Calif

Alto,

Calif

Newark,N.J

Park,

Calif

Alto,

Calif

Dover, N

Livingston,N.J

City1,N.Y.

Corp

.

Kokomo,

Orange,N.J

City,Mo

Britain,

Conn

.

Clifton,N.J

Cleveland,
Inc

Ohio

Concord, Mass

.

Carlstadt,N.J

Lancaster,Pa.

Alto,

Calif

Chicago,

.

Akron,

Ohio

H4-1

Dated:April

H4-2

Dated:March

CODE

NO
40920
42

.

43
44655

.

47904

.

48620

.

49956

.

54294

.

55026
55933

.

55938
56137

.

56289

.

59446

.

61775
62119

.

64959

66346

Ind

.

70

.

70485
70563

III

.

70903
70998
71002

.

71

.

Ind.71286

71313

.

71400

.

71450

.

71468

.

71

.

71

.

71528

.

.H

71

.

71

.

71
71753

Ind

.

Del

.

71
71

.

72136
72354

.

72

.

72656
72758

72765

III

:
.

72825
72928

.

72982

.

73061
73138

.

73293

.

73445

.

73506

III

.

73559

Ind

.

73682
73734

.

MANUFACTURER

Miniature

190

MuterCo.
C.A.NorgrenCo.

990

Ohmite Mfg.Co
Polaroid
Precision

Inst.Co

Raytheon
Shallcross

Simpson
Sonotone

Sorenson 6Co.,
Spaulding

Sprague
Telex,

Union

Westinghouse

Universal
Western

Weston
Wollensak

Allen

309

Allied
Atlantic

AmperiteCo.,
Belden

Bird
Birnbach

041

Boston

MurrayCo.

Bud
Camloc

AllenD.

Prod.Corp

Bussmann

EdisonCo.
CTS
Cannon

471

Cinema
C.P.Clare&Co

482

Standard-Thomson

Clifford

590

Centralab

700

The

Cornish

Chicago

744

A.O.Smith

785

Cinch

984

Dow
Electro

John E.Fast

619

Dialight
General

Girard-Hopkins
Drake

HughH.
GudemanCo.
Erie Resistor

Hansen
Helipot Div.of

Instruments, Inc
Hughes

Hughes

Amperex

North
Bradley

Carling
GeorgeK.

Federal

Supplements

1962

1962

Bearings,

Precision

.

Corp

.

Thermometer

.

Company

Mfg.Co

.

ElectricCo.

Corp

.

Inc

.

FibreCo.,

ElectricCo.

Inc

.

Switch

and

Signal,

Air

BrakeCo.

ElectricCo.

ElectricCo.,

Inst.Div.of

Mfg.Co

ControlCo.,

India

Mfg.Co

Electronic

Gear

Radio

Fastener

Cardwell

Corp

ElectricCo.
EngineeringCo.

Miniature

Mfg

Corning

Motive

Corp
Ceramics

Mfg.Co

Eby

Mfg.Co.,Inc

Products

ElectronicCo.,

American

Semiconductor
Electric,

Screw

Daystrom,

OpticalCo.

.

Inc.New

Rubber

Inc

.

.

Corp

RadioCo.

Fuse Div.of
.

.

AircraftCo.Newport

.

Works

Div.of

of Texas

Inc

.

Corp

Electronic

.

.

Corp

Mfg.Co.Div.Waltham,

Div.of

Globe

WireCo

.

Lamp

Crowlay

Corp

.,

.

Corp

Corp

.

Mfg.Co.,Inc

6Co.

.

Corp

.

Inc

.

Corp

.

.

Beckman

.

Division

PhillipsCo.,

Inc

.

GarrettCo.,

ProductsCo.Chicago,

Inc

.
Chicago,

Englewood,

Cambridge,

and

Philadelphia,Pa.

Lexington,

Chicago,

Elmsford,N.Y

So.Norwalk,

Tonawanda,N.Y

Inc

.

North

Adams,

St.Paul,

Div.of

Swissvale,Pa.

Ow0550,

Inc.New

Inc

Newark,N.J

Rochester,N.Y

Hartford,

Works,

Inc

.

Chicago,

New

Chicago,

Cleveland,

New

Quincy,

Cleveland,

.

Paramus,N.J

Plainville,

McGraw-

St.Louis,Mo.

Los

Angeles,
Burbank,

Chicago,

.,

Union

Inc

Milwaukee,

New

Works

Chicago,

Div

.

West

Orange,N.J

Chicago,

Midland,

.

Willimantic,

Chicago,

Brooklyn,N.Y

.

Keasbey,N.J

Oakland,

Chicago,

Philadelphia,Pa.

Chicago,

Princeton,

Fullerton, Calif

of

Beach,

Div.of

Inc

Hicksville,N.Y

Corp.Hamden,

Hartford,

Inc

.

Philadelphia,Pa.

ADDRESS

Keene,N.H

Colo

Skokie,

Mass

Mass

Selma,N.C

Conn

Mass
Minn

Mich

York,N.Y

.

Conn

York,N.Y

York,N.Y

Ohio

York,N.Y

Mass

Ohio

Conn

Elkhart,

Ind

Calif
Calif

Mass

.

Wis

York,N.Y

Mich

Conn

Calif

Erie,Pa.

Ind

Calif

.

Conn
Conn

00130-3

III

III

111
III

III

III

111

III

III

111

III

III

.
.

.
.
.

.

.
.
.

.
.

.
.

.
.

.
.
.
.

.
.
.

.
.

.

.

.
.

.
.

.
.

.
.

.
.

.
.

.

.
.

.
.

.

.

.
.

.
.
.

.



































































































































































































































-











Model

CODE

NO

.

73743
73793

73905
74455
74661

74868
74970

75042
75

173

75376
75382

75818
75915
76005

76210
76433

76487
76493
76530

76545
76854

77068

77221

77252
77342

77630
77638

77764

78

189

78283
78471

78488

78

553
78790
78947

79

142
79251

79727
79963

80031
80120

80

130

60131

80207
80248

80294
80411

80486
80

583

80

640

81030

81312

81415

81

453

81483

81860

82

042

82142
82170

82209
82219

82376
82

389

00130-3

425A

MANUFACTURER

Special

Fischer
The General
Jennings Radio

J.H.Winns,

Industrial

R.F.

Borg
F.JohnsonCo.

E

.

International
Jones,

of Cinch

James

Kulka

Lenz

Littelfuse

Lord

C.W

Micamold

James

J.W.MillerCo.

Monadnock

Mueller
Oak

Bendix

Bendix

Phaostron

ElectronicCo.South

Philadelphia
Potter

Machine

Radio

Radio

Resistance
Shakeproof

Tool
Signal
Tilley

Stackpole

Tinnerman
Transformer

UciniteCo.

Veeder
Wenco

Continental-Wirt

Zierick

Mapco

Sessions

Schnitzer
Times

Electronic

Any

standards

Unimax

W.L

Oxford

Bourns

Acro

Fulton

All

Star

HammerlundCo.,Inc
Stevens,

International

Winchester
Wilkor

Raytheon

Components
Tube

International
Barry

Carter

Jeffers

Speer

AllenB.

Maguire
Sylvania

Electronic

AstronCo.
Switchcraft,

Mfg.Co

Industries

Mfg.Co

and

SonsWinchester,

Condenser

DivisionofAmphenol-

Products

Electronics

ResistanceCo.

HowardB.,

Mfg.Corp

KnightsCo.

CorporationMt.Vernon, N.Y.

Electric

Electric

Mfg.Co

Inc

.

Mfg.Co

.

Marwedel

.

Electronic

Millen

Mfg.Co.,Inc

Mills

ElectricCo.

ManufacturingCo.

Pacific

Division

Corp

.

Instrument

Steel

and

Brumfield,

and

Foundry

CondenserCo.
ReceptorCo.,

ProductsCo.

Division

Works

Indicator

Corp

Mfg.Co

.

CarbonCo.

Products,

Engineers

Root,

Inc

.

Mfg.Co

.

Mfg.Corp

Division

of

ClockCo.

Alloy

ProductsElizabeth,

Corp

Facsimile

Industries

brand

tube

Switch,

Div.of

Maxson

Corp

.

Electric

Corp

Laboratories,

Div.of

Robertshaw

ControlsCo.Columbus

Products

Inc

Arnold,Co.,

Instruments,

ElectronicsCo.,

Inc

Products,

Mfg.Co.,Industrial

Div.,Industr

Operations

Rectifier

Controls,

Inc

Co

.

Parts

Electronics

CarbonCo.
DuMont

Labs

Industries,

Electric

Prod

Tube

Inc

.

.Cincinnati,

Co

.

.San

Corp

.

Corp

.

Philadelphia,Pa.

Division

.

.

San

Corp

Mfg

.

.Maiden,

Los

San

Cleveland,

of

Hollywood,

No

.

and

and

Wire

Philadelphia,Pa.

Div.of

Inc

.

of

Illinois

.

San

Inc

.

Newtonville,

Electronics

.

Philadelphia,Pa.

New

.New

Association

meeting

EIA

Washington,

.Wallingford,

.

Inc

.Riverside, Calif

.

.

Inc

.

Inc

New

.

.

Corp

.

El

.

Watertown,

Division

of

Inc

.,

.

Inc

.Greenwich,

Inc

.

.,

Div

.

East

CODE

ADDRESS

Ohio

Elyria,

Ohio

Jose, Calif

Mass

Chicago,

Danbury,

Conn

Waseca,

Minn

Chicago,

Sandwich,

Chicago,

Des

Plaines,

Erie,Pa.

Francisco,

Calif

.

Brooklyn,N.Y

Mass

Angeles,

Calif
Calif

Leandro,

Lake,

.

American
Princeton,

Camden,N.J
Brooklyn,N.Y

Harrisburg,

Elgin,

New

York,N.Y

St.Marys,Pa.

Conn

Chicago,

Corp

.

Rochelle,N.Y

York,N.Y

Chicago,

16,

Defiance,

New

York,N.Y

Boston,

.

Haven,
.

Norwalk,

Newton,

Segundo,

Skokie.III

Du

Bois,Pa.

Clifton,N.J

Emporium,Pa.

Newark,N.J

Chicago,

00015-26

Revised:10

Ohio

Calif
Calif

Ind

Calif

Ohio

Calif
Mass

N

D.C

Conn

Ohio
Ohio

Mass

Conn
Conn

Ohio

Mass

Calif

Mass

Conn

Crystal

Pasadena,

Corp

Francisco,

Cleveland,

Pasadena,

Hartford,

Morristown,N.J

Inc

Cleveland,

LIST

CODE

NO.MANUFACTURER

82647

.

82866

.

82877

III

.

82893

.

83053

.

83058
83086

III

.

83125

.

III

83

148

83186

III

.

83298

III

.

83330

83501

.

83594

.

83777

.
.

83821

.

84171

396

84

111

.

844'11

.

84970

85454

.

85474

85660

85911

.

86197

.
.

86684

.

Pa

87216

Ill

.

87473

.
.

88

140

88

220

89473

.
.

89636

.

89665

III

.

90

179

90970

.

91260
91345

.

.J

.

91418

.

91506
91637

91662

.

91737

.

91827

III

.

91

921

.

92196
93332

.

93369

.

93410

93983

.

94144

.

94145

.

94148
94154

.
.

94197

.

94310
94682

.
.

95236
95238

.

95263
95264

III

.

July

APPENDIX

OF

MANUFACTURERS

Metals

and

Controls,

Texas

Instruments,

Spencer

Research Products
Rotron

Vector
Western
Carr

New

Pyramid
Electro

Victory
Bendix

Smith,
Gavitt

Burroughs

Model

Loyd
Arco

A.J.GlesenerCo.,Inc
Good

Sarkes

Boonton
R.M.Bracamonte&Co.

Koiled

Seamless

Clifton Precision
Radio

Philco

Western

Cutler-Hammer,
Gould-National

General
Carter
United

U.S.
Bearing

Connor

Augat

Gremar

Stevens

1962

Prods

ManufacturingCo.,
ElectronicCo.

Washer

FastenerCo.

Hampshire

ElectricCo.

Cords

Engineering

Corp.,Red

HermanH.,
Wire

Div.of

Amerace

Corp

Electronic

Eng.and

ScruggsCo.
Electronics,

All

Electric

Tarzian,

Molding

Kords, Inc

RubberCo.

Corp.of

Electron

Tube

.

Corp

Fibrous

Electric

Parts
TransformerCo.

RubberCo.,

Goods

Div

EngineeringCo.
Spring

Miller

Dial&Nameplate

Radio

MaterialsCo.

Brothers,'Inc

Dale

Electronics,

Corp

.

Elco

Mfg.Co.,Inc

K F

DevelopmentCo.Redwood

Minneapolis-Honeywell

Micro-Switch

Universal

Metal

Sylvania

Electric

Semiconductor

Robbins

and

Mfg

Insuline-Van
Raytheon

Raytheon
Scientific
Tung-Sol

Curtiss-Wright
Tru

Worcester
Allies

Continental
Leecraft

Lerco

.

Electronic

Mfg.Co.,Industrial

Div.,Receiving

Mfg.Co.,Semiconductor

California

Radio

Electric,

Electronics

Ohm

Prod.Div.of

Engineering

Pressed

Products

Connector

Mfg.Co

Electronics,

.

Corp

Mfr.Co.Los

Ball

.

Co

Corp

Bank Div

Inc

and

CableCo.,

Corp

.,

Div

Tube

Mfg.,Inc

Inc

.

Mfg

Inc

.

Company

.

Products

America,

Div

.

(Lansdale

Glass

.

Inc

Batteries,

Distributing

Div.of

Mechanical

.

Mfg.Co.San

.

Inc

Division

Products,

Prod.Inc
Div

Myers.Inc

Inc

Co

.,

Norman

Division

Tube

Street

PlantNewton,

Products,

Inc

Corp

Div

.

and Mfg.Co

Aluminum

Corp

.

Inc

.,

Inc

Inc

Bearing,

.

.

Economy

.Columbus,

.Wakefield,

.

.
Ind.,Inc

.

.,

.

(Sheet2of

ADDRESS

Inc.,Div.of

.,

Attleboro,

.

Inc

Woodstock,N.Y

Cambridge,

Peterborough,N.H

Los

.

.Red

.

.Brookfield,

.

.

San

Co

.

Bloomington,

San

New

Clifton

RCA

Division)

ProductsCo.

San

Inc.St.Paul,

Corp

Schenectady,N.Y

San

Co-

RegulatorCo.,

Inc

Bassett

.,

.New

Manchester,N.H

Operation

Inc

East

Model

.Chicago,

Corp.Woodside,N.Y

.

From:F.S.C

Mass

Wis

Madison,

.

Glendale,

Calif
Calif

Angeles,

Mass

Inc

.

Darlington,S.C

Angeles,

Calif

Union,N.J

Bank,N.J

Brooklyn,N.Y

Mass

Plainfield,N.J

Huntingfon,

Festus,Mo.

New

York,N.Y

Francisco,

Calif

Ogallala,

Neb

Boonton,N.J

Francisco,

Calif

Haven,

Conn

Chicago,

Heights,

Harrison,N.J

Lansdale,Pa.

Francisco,

Calif

Lincoln,

Minn

.

BalerCo.

Chicago,

Chicago,

Passaic,

Francisco, Calif

Calif

Francisco,

Monte,

El

Calif

Chicago,

Attleboro,

Philadelphia,Pa.

.

Corp

Worcester,

City,

Freeport,

.

Puente,

Woburn,

York,N.Y

Mansfield,

Components

Quincy,

Div

.

Loveland,

Newark,N.J

Paterson,N.J

.

Miami,

New

York,N.Y

Burbank,

H4-1

H4-2

Mass

Nebr

Mass

Calif

Calif

Mass

Ohio

Mass
.,
Mass

Colo

Mass

Calif

.

CODE

NO.MANUFACTURER

95265

95275

.

95354

.

95987

96067

.
.

96095

.

96256

.

96296

.

96330

.

96341

.

96501

.

97464

.

97539

.

97966

.

98141

.

98220
96278

Ind

.

98291
98405

.

98734

.

98821

.

98925

Ind

.

.

98978

.

99109

.

99313

III

.

99515

Pa

.

99

707

.

99800

99848

99934

99942

.

III

.

99957

.
.

THE

III
III

N.J.

111

111

III

Fla

Handbook

Dated:April
Dated:March

FOLLOWING

.

ASSIGNED

BER

.

THE

FEDERAL

HANDBOOK
0000F

.

00001

.

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.

0000P

.

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.

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0 000

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Supplements

2)

National

CoilCo.

Vitramon,

Inc

Methode
WeckesserCo.
Huggins
Hi-Q

Thordarson-Meissner
Solar

Carlton
Microwave
Excel

Industrial

Automatic
CBS

Div.ofC.B .S.,Inc

Axel Brothers
FrancisL.

Microdot,
Sealectro

Carad
Palo

Co.,Inc

North

Clevite

International

Columbia
Varian

Marshall
Control
Delevan

Wilco

Renbrandt,

Hoffman

Technology

Malco
Telefunken

Western

Nahm-Eros
Ty-Car
Texas

Tower

Webster

British

Precision

B

Carmichael

Goshen

Amatom

Atohm

Cooltron
Radio

1962

1962

.

Mfg.Co

.

Laboratories

DivisionofAerovox

Maguire

Industries,

ManufacturingCo.Los

ScrewCo.

Associates,

TransformerCo.

Retaining

and

Mfg.Co

Electronics,

Alto

Div
Research

Products
of

America

Hoffman
of

.

Elite)
Ind.,Inc

Metals

Williams ManufacturingCo.

Division

Development

Precision

.

Inc

.

Mosley

Inc

.

Corp

.

Corp

.

Engineering

.

Hills

ElectricCo.

Transistor

.ofClevite

Corporation

Calif

SUPPLY

Prod

Corp

Electronic

.

Corp

Technical

Associates

Industries,

Division

Switch

Division,

Electronics

Inc

.

Semiconductor

Electronics

Instrument

.

H-P

VENDORS

IN

THE

CODE

Tool

and

Die

(c/o

American

Coil

Div.of

.

SpringCo.San Leandro,

.

Mfg.Co.,Inc

Instruments, Inc

and

Controls

Mfg.Corp

.

ElectronicsCo.

Pine

MicaCo.

Mfg.Co.Inc

Products

Leather

Radio

Electronics

Instrument

Diode

Corp

Corrugated

Die

Cutting
Corp

Corporation,

Label

Eng.&

ManufacturingCo.

D
Electronics,

Industries

Sheridan,

Bridgeport,

Chicago,

Sunnyvale,

Div.of

Inc

.Mt.Carmel,

Angeles,

Burlington,

Inc

.

Oakland,

RingCo.

Irvington,N.J

Yonkers,N.Y

Danvers,

.

Jamaica,N.Y

Pasadena,

So.Pasadena,

Mamaroneck,N.Y

Redwood

Palo

Mineola,N.Y

.
.Waltham,Mass

Corp
Electron

Corp

LATEST

.

Watch

Burbank,

.New

Palo
Pasadena,

ControlsCo.

El

Segundo,

.East

Indianapolis,

Boston,

Div

.

of

Corp

.Evanston,

Corp

.

Newbury

HAVE

SUPPLEMENT

FOR

MANUFACTURERS

Los

Angeles,
New

Automatic

Redwood

.

Holliston,

.

.Versailles,Ky.

Div

Providence,R.I

Inc

.

New

Spruce

.Kansas

Corp

.Newark,N.J

Ltd

.

Washington,

ComponentsCo.

Van

.

San

Specialties

Richmond,

ServiceGoshen,

Torrance,

Industrial

Monterey

New

Rochelle,

Monrovia,

Hayward,

San

Jose

Sun

Valley,

Oakland,

Des

.Burbank,

Co

Appendix

ADDRESS

Wyo

Conn

Chicago,

Calif

Olean, N.Y.

Calif

Chicago,

Mass

Calif

Mass

Calif
Calif

City, Calif

Alto, Calif

Calif

York,N.Y

Alto,

Calif

Calif
Calif

Aurora,N.Y

Ind

Mass

Park,

Calif

NO

NUM

Calif

York,N.Y

City,

Calif
Calif

Mass

York,N.Y
Pine,N.C

City,

Kans

D.C

Nuys, Calif

Lodi,N.J

Jose, Calif

Calif
Calif

Park, Calif

N.Y.

Calif
Calif

27,

Calif
Calif

Calif

Plaines,

Calif

Ind

III
III

III

III

III

TO

III

.
.

.
.

.

.
.

.
.
.

.
.
.

.
.
.

.
.

.
.

.

.
.

.

.
.

.
.

.
.
.

.

.
.

.
.

.

.
.

.
.

.
.

.
.

.
.

.
.

.
.

.
.

.
.
.

.













HEWLETT-PACKARD

CIeYeIand,
Crossley Associates,

5579P-1
(2

Detroit,
Crossley Associates,

+

Crossley
2545
Monroeville,Pa15146
[phone]

+

Dayton,
Crossley

(513)

+

Indianapolis,
Crossley

3919
(317)

Comp
Robinson

Hewleff-Pack
Park
(717)

Salt
Lahana&Co

1482M.'orSt.
(8Ol)

+

Sacramento.Calif.95821
Neely

7591
(916)

SAN
Neely

SCI
San

(415)

+

LOS
Neely

3939
North
(213)

+

San
Neely

1055
[714)

+

Scottsdale,
Neely

3009No.
(602}

+

Albuquerque,N.M.
Neely

6501
(505)

Tucson,
Neely

232So.

[phone]

T6)884-9209

Mich.48235

14425

West

(313)

342-5700

PITTSBURGH

Associates, Inc

Moss

Ohio

Associates,

1250W.

Dorothy

299-3594

Associates, Inc

Meadows

546-4891

Hill,Pa.

Sales

Place

737-6791

LakeCity.Utah

486-8166

Enferp,TSes

Carls6ad

482-1463
FRANCISCOAREA

Enterprises

Laurel

Carl-,

59[-7661

ANGELES

Enterprises

-

Lankershim

Hollywood,

877-1282

Diego,

Enterprises

Shaft-

223-8103

Enterprises

ScoitsdaleRd.

945-76tH

Enterprises

Lamas

255-5586

Ariz

Enterprises

Tucson

©

Farreplacement

-}

Indicates Instrument

Ohio

Road

Eight

AREA

Side Blvd

45409

Ind

Dr

Division

ard

Office

.

Ave

Street

Calif.9407

AREA

and

Calif.92106

Street

Ariz.85251

Blvd

85716

.

Blvd

44129

Mlle

Lane

.

17011

Company

Bldg

.

Blvd

Calif

N.E,

.,

Inc,

Inc

Road

.

Inc

46205

.

+

84115

.

.

766-3811

8710

.

.

.

.

.

Seattle,
ARVA,

1320

Prospect

(206)

9160

Las

Cruces,N.M.

Neely
114S.
(505)

526-2486

parts

Repair

Rochester,N.Y.

Sales

Syracuse
Hewlett-Packard
800

Linden

Avenue

(716)

381-4120

Wash.98109

Inc

.

Street

622-0177

Street

repair

Stations

88001

servicesinthe

Enterprises

Wafer

and

14625+

Division

Company

SALES

Syracuse,
Syracuse
Hewleff-Packard
Pickard

Mo11oy
(315)

Richmond,Va.
Bivins&Caldwell,

2112

(703)

+

Denver,
Lahana&Company
P.O.

Box

Belleview
(303)

755-1233

Dallas,

Hewlett-PackardCo.
P.O.

3605

(214)

San

Francisco

N.Y.13211+

Sales

Bldg

Rd,

454-2486

Spencer

282-5451

Colo.80222

22065

Valley

Hy,

Texas75209

Boa7f

66

Inwaod

357-TB81

area,

AND

.

and

Road

Road

and

SERVICE

Poughkeepsie.N.Y.12601

Inc

.

contact

Syracuse
82

+

WASHINGTON,

Harman
941

(301)

Kaosos
Harris-Hanson
7916

(816)

Hewlett-Packard

Division

CompanyHewlett-Packard

PickardDr.(914)

23230

Interchange

332-6667

Please

Sales

Washington51.

454-7330

Associates, Inc

Rollias

Avenue

Rackville,Md.

427-7560

City,Mo.

Company

Pamo

Street

444-9494

Houston,

+

Hewlett-PackardCo.
P.O.

Sox

22813

4242

Richmond

[phone]

OFFICES

Division

Company

D

.

AREA

C

.

.

20852

64131

Texas77027

Ave

.

Companyat;

IN

+

BOSTON

AREA

Yewell

Associates,

Middlesex
Burlington,

(617)

272-9000

±

Middletown,
Yewell

Associates,

589

SaybrookRd.

(293)

346-6611

Englewood.N.J.07631

RMC

Sales
Hewlett-Packard
391

Grand

(201)

567-3933

'+

PHILADELPHIA
Robinson

Sales

Hewlett-Packard

144

Elizabeth

West

Conshohocken,Pa.

(215)

248-1600
Baltimore,Md.

Harman

Associa+es,

3006

West

(301)

664-4400

+S+.

Paul,

Minn.55114

Crossley

Associates,

842

Raymond

(612)

646-7881

Huntsrille,
Bivins&Caldwell,

Holiday

SuiteNo.

(205)

881-4591

395

Page

Mill

NORTH

Turnpike

Mass.OIBD4

Coon.06458

Division

Company

Avenue

AREA

Division

Company

Street

and

21215

Cold

Spring

Avenue

Ala.35801

Office

9

Road,

Inc

'

Inc

.

-

19428

828-8200

Inc

.

Lane

+

I-

+

+St.

+

+

+

Inc

.

Center

Palo

Alto, California 94306

AMERICA

+

New

York,

RMC

Sales

Hewlett-Packard
236

East

[phone]

Asbury

Park,N.J.

Robinson

Hewlett-Packard

1317

Railroad

(201)

531-3150

Montreal,

¢uebec

Hewlett-Packard

8270

Mayrand

(514)

735-2273

Ottawa,

Ontario

Hewlett-Packard

1762

Carling

[phone]
Toronto,

Ontario

Hewlett-Packard

1415

Lawrence

(416)

249-9196

Chicago-"'­Crossley

Associates, Inc

2501Wesf

Peterson

(312)

275-1600

Louis,Mo.

HarrTs-Hanson

2814

South

Brentwood

(314)

647-435C

High

Point, N,C.

Bivins&Caldwell,
1923N.

Main

(919)

682-6673

Atlanta,

Ga

Maple

233-1141

Fla.3281

Sales

Division

Commonwealth

425-5541

Sales

Divlsior

Ave.,Madeira

391-0211

.

Drive,N.E.

Bivins&Caldwell,
3110

(404)
Orlando,

Stiles
Hewlett-Packard

621
(305)

S+.Petersburg,

stills
Hewlett-Packard

410-150th
(813)

75th

Sales

Street

Avenue

Avenue

60645

Company

Street

30305

Di,Tden

63144

N,

Y

.

Company

Street

Division

Company

Avenue

(Canada)

(Canada)

(Canada)

Aye

Blvd

27262

I-

Inc

.

Company

Ave

Fla.33708

Company

(415)

10021

07712

W,

.
.

.

.

Beach

326-3950,

Ltd

.

Ltd

.

Ltd

.

HEWLETT-PACKARD

1501

Page

Mill

Road-Palo

Tel:(415)

DYMEC

395
Tel:(415)

BOONTON

Green
Tel:Oakwood

326-7000"TWX:415-492-9200-Cable;HEWPACK

DIVISION

Page

Mill

Road-Palo

326-1755-TWX

RADIO

Pond

Road-Rockaway,

7-6400-Cable

COMPANY

Alto,

Alto,
;

415-492-9363

COMPANY

:

California

California

New

Jersey

BOONRACO

94304

94306

07866

HARRISON

41

Industrial

Tel:[phone]-TWX

SANBORN

Industrial

LABORATORIES

Road-

Berkeley
:

COMPANY

Division-175

Summit,N.J.

Wyman

Tel:(617)TW4-6300-TWX

F.L

.

MOSELEYCO

409N.Fair

Oaks

Ave.-

.

Pasadena,

MUrray1-0208-TWX:PASA

Heights,

St

.,

:

Waltham,

617-894-0789

Calif

CAL

7687-Cable

N,

J.07922

Mass.02154

.

91102rTel:(213)

MOCOPAS

OCT

63

AUTHORIZED

HEWLETT-PACKARD
54

Route

des

Geneva,

Switzerland
Telephone:(022)
Telex:2

.24

Roellstraat,

Burg

.

Kingdom

Road

England

RuedeI'Hopital,

.22

.20

13e

Rodrigo

.O.Box

2531

I

68 60
68 60

.86

and1354 99

Massena

da

72

73

74

Cable:HEWPACKSA

Netherlands
Hewlett-Packard

+23,

Tel:132898

United
Hewlett-Packard

*Dallas

Bedford,
Tel:Bedford

Belgium

Hewlett-Packard

+20-24

Tel:11

France
Hewlett-Packard

+Boulevard

Paris

Portugal
TELECTRA
Rua
P

Lisbon

Tel:68 60

Acacias

68052

Benelux

(France)

Fonseca

S.A.

42.81 .50

Benelux

AmsterdamW.

Ltd

.

Brussels

150

103

SALES

I

AND

SERVICEOFFICES

Sweden

+

H-P

Instrument

Cent

.08 .30

10-83

.08 .30

Gate6,Oslo

.99

.93

AB

28

um

and

.

Centralvagen
Solna
Tel:08-83

Norway
Morgenstierne&Co

+

Wessels
Tel:42

IN

WESTERN

EUROPE

Finland
INTO

O/Y

P.O.

Box

iIIMeritullinkatu,

Tel:66

.39 .09

Denmark
Tage

Olsen

+

CentrumgArden,
6D,

Vesterbrogade,

Tel:Minerva

Germany

Hewlett-Packard

+

Sophienstrasse8,FrankfurtamMain

Tel:77-31-75
Severinstrasse

Tel

:

49-51-21

Yugoslavia
BelAvm

Electronics

83.

des

Brussels

15,

Tel:35.29

.58

153

and35.125

A/S

6838

and

5,

Mimosas

Belgium

Helsinki

Roo-133

Copenhagen

V

.m.b.H

77-94-25

Munich

V

.

.

6

Spain
ATAIO,lngenieros
A.Aguilera,
Tel:[phone]

Argentina
MauricioA.

Telecomunicaciones
Ca

Tel:30-6312

Australia
Sample

+9-II

RichmondE.I,Victoria
Tel

48

New

Tel:69-6338

FOR
IN

Indicates

+

No.8,

Madrid

15

and

254-53-80

-+-Via

Authorized

Suarez

rlos

Calvo

214,

Buenos

Aires

Electronics Pty.Ltd

Cremorne

Street

:

42-4757

(3 lines)

Chippen

Street,

South

SALES

AREAS

+

Sydney

Wales

(6

lines)

AND

SERVICE

NOT

LISTED

International
Hewlett-Packard

1501
Palo Alto, California 94304U.S.A.

Telephone:(415)
TWX:415-492-9100
Telex:033811
Cable

Instrument

Page

:

HEWPACK

Mill

Repair

Marketing

Road

Tel

:

.

CONTACT

Company

326-7000

Stations

L.Anelli

553-081

ASSISTANCE

Department

13,

Milan

and

553-811

India
The

Scientific

6,

Tej

Bahadur

Tel

:

2451

240,Dr.

Bombay

Tel:26-2642

11,

Esplanade

23-4129

Tel

:

30,

Mount

Tel:86339

B-7,

Almeri

Tel:271053

:

Dadabhai

I

Road,

Gate

ViaS.
Tel:7

Sales

Instrument

SapruRoad,

Naoroji

East,

Calcutta

Madras

Extn.,New

CroceinGerusalemme

.567 .250&7

.567 .941

and

Service

Company,Ld.

Allahabad

I

Road,

I

2

Delhi

1

97,

Rome

OfficesinOther

Iran

Telecom

Ltd

P.O.Box

Tel:43850

Israel
Electronics&Engineering

+

16

Tel:35021
Japan

Saki &
Chushoku

9
Chuo-ku,

Tel:(860)
Sumi Bldg.,106

Kita-ku,Osaka
Tel:(362)

Korea
American
Song

112-35
Se6ulP.O.Box
Se6ul
Tel:3-7049,

.

1812,

KremenetskiSt.,

(3 lines)

Company,

Building

2-chome,

Nihonbashi

Tokyo

4121-5

8151-5

Trading

Bo Building

Sokong-bong,

3-7613

Tehran

Tel

Ltd

Umegae-cho

Company,

1103

Switzerland
Max

+

Wankdorffeldstrasse

Tel:(031)

Ltd

.

Aviv

.

Koami-cho

Korea,

Se6ul

Paul Frey

Ltd

66, Bern

42

.00 .78

Areas

New
Sample

8
OnehungaS.E.5,Auckland

Tel:565-361

Puerto

San
P.O.

Pta.deTierra

Tel:722

South
F.H.Flanter&Co.(Pty

Rosella
8uitencingle

Tel
Taiwan

Hwa
21

Tel:4-6076,

.

Zealand

Electronics (N.Z.)Ltd

Street

Matipo

Rico&Virgin

Juan

Electronics,

Box

5167

.3342,

724-4406

Africa

House

Street,

:

3-3817

(Formosa)

Sheng

ElectronicCo.,

Nanking

West

4-5936

Turkey
TELEKOM

Engineering
P.O.Box376-Galata
Istanbul

Tel:49

.40 .40

Greece
K.Karayannis
Klaftmonos
Tel:230

Sta.,San

Road,

Cape

.301 (5

Islands
Inc

.

Juan

.),

Taipei

Square,

Ltd

Town

Ltd

Lines)

.

Bureau

Athens

124

.

.

12/63

All

our

the

dateof

which provetobe

damages

For

assistanceofany
Packard
and
charge

field

serial

numbers

for repair

non-warranty

products

shipment.Our

.

office

for

.

Service

of

instruments

or

other

are

warranted

obligation

defective

kind,

during

including

instructions.Give

data or

under

service

work

against

is

the

help with

full

shipping

warranty,

will

always be

WARRANTY

defects

limitedtorepairing or

in materials

warranty

instruments

details

instructions

period.We

of the

will

except

transportation

under

difficulty

supplied,ifrequested,

be promptly

and

workmanship

replacing

are not

warranty,

and

include
senttoyou.There

charges.Estimates

before

for

products
liable

for

contact

the

work

one

year

(except

tubes)

consequential

your

nearest

instrument

will

of

charges

begins

.

from

Hewlett-

model

be

no

for

CLAIM

Your
safe
carrier

FOR

instrument

delivery.If

or,ifinsured

SHIPPING

On

receiptofshipping
use the
bag and
movement

original

surround

inside

GENERAL

Your

nearest

cometoget

directlyintouch

CUSTOMER
Hewlett-Packard

395 Page
Palo
U.S.A

Telephone:(415)

TWXNo.

Cable:"HEWPACK"

DAMAGE

should

be

inspected

the

instrument

separately,

instructions,

shipping

the

Hewlett-Packard

Alto,

.

it

with
container

Mill

Road

California,

(415)

cartonorany

threeorfour

.

with

SERVICE

Company

326-3950

492-9363

IN

SHIPMENT

and

testedassoonasit

is

damagedinany
with the

field

insurance

forward

the

strong

inches of

container.Wrap

shock-absorbing

officeisreadytoassist

Hewlett-Packard

94306

wayorfails

company

instrument

prepaidtothe

youinany

service

departments

is

received.The

to

operate

instrumentisinsured

properly,

fileaclaim

.

destination

the

instrumentinheavy paper

materialtocushionitfirmly

situation,

and you

:

OR

(In

Western

Hewlett-PackardS.A

54

Route

Geneva,
Telephone:[phone].

Cable:"HEWPACKSA"

Europe)

des

Acacias

Switzerland

with

indicated.You

or a

and

are

always

.

50

for

the

may

plastic

prevent

wel-

00390-5

425A-902

PF"NTED

IN

U.S.A

.