HP 608E Manual de servicio

•

60BE/F

VHF

SIGNAl

GENERATOR

PART

NUMBER

00608-90046

rli~

HEWLETT

PACKARD

,--------

OPERATING

AND

SERVICE

MANUAL

----------,

608E/F

VHF

SIGNAl

GENERATOR

PART

NUMBER

00608-90046

SERIALS PREFIXED:

This

Operating

and

Service

manual

applies to

608E/F

instruments

with

serial

numbers

prefixed

833-

above

02720

(GOBE)

and

832- above 01500

(608F).

SERIAL

PREFIXES

NOT

LIST~!l:

For

instruments

with

lower

serial

number

prefixes

"Backdating"

Appendix

supplied

the

back

this

manual.

Flio-

HEWLETT

~r..I

PACKARD

HEWLETT-PACKARD COMPANY 1965

1501

PAGE

MILL

ROAD, PALO ALTO, CALIFORNIA, U.S.A.

\OPERATING AND SERVICE MANUAL PART

NO.

00608·90046

Operating end Service Menual MIcrofiche Part No. 00608-90047 Printed: APRIL

1981

Model

608E/F

Table

Contents

TABLE

CONTENTS

Section

Page

Section

Page

PRINCIPLES

OPERATION

..•....

VMAINTENANCE .

5-1.

Introduction

.........•.•..

5-3.

Periodic

Inspection

...•.•....

5-4.

Cleaning

•.......•.•....

5-6.

Lubrication

......•...•...

5-9.

Performance

Tests

...••.•...

INST

ALLA

TION

.......•......•••

2-1.

Incoming

Inspection

.......••.

2-3.

Preparation

For

Use

.......•

2-4.

Power

Requirements

•.......

2-6.

Power

Cable

2-8.

Repacking

For

Shipment

•.......

GENERAL

INFORMATION

...•.•..•.

1-1.

Description

......•••.•....

1-3.

Frequency

........•......

1-5.

Modulation

1-7.

RFI

....•••............

1-9.

Auxiliary

Equipment

.•.•....•.

1-10.

Model

11509A

Fuseholder

....

1-12.

Model

11508A

Terminated

Output

Cable

•............

1-14.

Instrument

Identification

.....•.

5-15

5-29

5-30

5-32

5-14

5-26

5-16

5-12

5-13

5-18

5-11

5-17

5-18

5-12

5-10

5-23

5-25

5-16

5-1

5-8

5-9

5-8

5-1

5-5

5-7

Purpose

Frequency

Accuracy

and

Resettability

Test

....•....

Calibrator

Accuracy

Test

Frequency

Drift

Test

Residual

Test

Incidental

Test

•...•....

Maximum

Output

Test

.....

Frequency

Response

and

Leveling

Test

Output

Accuracy

Test

Uncalibrated

Output

Test

External

Sine-Wave

Modulation

and

Modulation

Meter

Test

Internal

Modulation

Test

Envelope

Distortion

Test

External

Pulse

Modulation

and

ReSidual

Level

Test

•.....•.

Leakage

Test

Frequency

Control

Input

Test

(Model

608F

Only)

........•

Frequency

Analog

Output

Test

(Model

608F

Only) .

Synchronization

Test

with Model

8708A

Synchronizer

(Model 608F)

...•.....••.

Adjustment

Power

Supply

Voltage

Adjustments

Modulation

Meter

Adjustment

...

Calibration

Percent

Modulation

Meter

.......•

Automatic

Output

Leveling

Adjustment

.......•......

Oscillator

Adjustment

.....

Uncalibrated

Output,

Minimum

Output, and

Amplifier

Tracking

Adjustment

....•.

Output

Meter

Accuracy

Adjustment

.....••......

Output

Meter/

AUenuator

Frequency

Response

and

Auto-

matic-Leveling

Output

Adjustment

Crystal

Calibrator

Adjustment

.•

Troubleshooting

...••........

Isolating

Trouble

Circuit

Section

..........•

Isolating

Trouble

Transistor

Circuits

Replacement

and

Repair

......•

Etched

Circuit

Board

Repair

Component

Replacement

Etched

Conductor

Repair

•....

Transistor

and

Semiconductor

Diode

Replacement

...•.....

Replacement

Electron

Tubes

Attenuator

Probe

Repair

and

Replacement

.......•..

Replacement

in Housing .

Replacement

Lamp

DSI .

Location

Parts

5-47.

5-48.

5-50.

5-59.

5-62.

5-63.

5-64.

5-66.

5-46.

5-67.

5-54.

5-74.

5-82.

5-83.

5-85.

5-42.

5-43.

5-25.

5-26.

5-29.

5-31.

5-34.

5-37.

5-10.

5-12.

5-13.

5-14.

5-15.

5-16.

5-17.

5-18.

5-19.

5-20.

5-21.

5-41.

5-27.

5-28.

5-22.

5-23.

5-24.

4-4

4-5

4-7

4-8

5-1

3-1

3-4

3-5

-5

4-1

4-3

2-1

4-1

4-2

4-3

1-1

Introduction

General

Description.

. .

Generator

Section,

Mode1608E

Generator

Section,

Model

608F

Amplitude

Modulation

Section

Attenuator

Section

.••..•..••

Calibrator

Section

..•.....•.

Modulation

Meter

Section

...•.

Power

Supply

Section

Detailed

Description

Generator

Section,

Model608E

....•......••

Generator

Section,

Model608F

....••.......

Amplitude

Modulation

Section

••

Attenuator

Section

.......•

Calibration

Section

Modulation

Meter

Section

Power

Supply

Section

4-33.

4-9.

4-15.

4-17.

4-19.

4-21.

4-23.

4-25.

4-37.

4-51.

4-55.

4-59.

4-63.

4-1.

4-3.

4-5.

4-7.

III

OPERATION

.••..............•.

-1.

Introduction

3-3.

Controls,

Indicators

and

Connectors

3-5.

Pre-Operational

Procedures

....

3-7.

Output

.....•...

-9.

Turn-On

Procedures

.....•..

3-11.

Calibration

Procedures

3-16.

Mode

Operating

Procedures

...•.

3-18.

Internal

Modulation.

. . . .

-20.

External

Modulation

.....

3-22.

Phase-Lock

Operation

Procedures

(Model

608F

Only)

...

•

iii

Table

Contents

List

lllustrations

TABLE

CONTENTS

(Cont.)

Model

608E/F

Section

Page

Section

Page

REPLACEABLE

PARTS

.....•....

6-1

6-1.

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

6-1

6.3.

Replaceable

Parts

List.

• . • •

••

6-1

6-6.

Ordering

Information.

•••••

••

6-1

6-9.

Factory

Selected

Parts

(*).

. .

6-1

vn SCHEMATIC DIAGRAMS

COMPONENT LQCATION INFORMATION

7-1

7-1.

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

7-1

APPENDIX

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

1·1

APPENDIX

IT.

. • . . • • • . • • . • • • • • • . • .

•.

IT-I

LIST

ILLUSTRATIONS

Number

1-1.

3-3.

3-4.

4-1.

5-1.

5-2,

5-3.

5-4.

5-5.

5-6.

5-7.

5-8.

5·9.

5-10.

5-11.

5-12.

5-13.

5-14.

5-15.

5-16.

5-17.

Title

Model

608E

and

608F'VHF

Signal

Generators

•................

Front

Panel

Controls,

Indicators,

and

Cormectors

••..•..........

Controls,

Indicators

and

Connectors

Used

Operation

with

Internally

Generated

Signals

......•..•.•.

Controls,

Indicators

and

Connectors

Used

Operation

with

Externally

Supplied

Signals

..........•...

Controls.

Indicators,

.:::.!:.1

~::'''::''::::''=3

Used

Phase-Lock

Operation

(Model

608F

Only)

...•.........

Overall

Block

Diagram,

Models

608E

and

608F

Fabricated

Test

EqUipment

...

Lubrication

POints,

1\mer

Drive

Mechanism.

...•.............

Frequency

Accuracy

and

Resettability

Test

Setup

...•..............

Residual

and

inCidental

Test

Setup.

OutpJ.t

Test

Setup.

....•.....•

Uncalibrated

Output

Test

Setup

External

Sine-Wave

Modulation

and

Modulation

Meter

Test

Setup

Envelope

Distortion

Test

Setup

Pulse

Modulation

Test

Setup

Leakage

Test

Setup .

Frequency

Control

Input

TestSetup

Synchronization

Test

Setup

Location

Power

Supply

and

Modulation

Meter

Adjustments

....

Modulation

Meter

Calibration

Test

Setup

............•.........

Pattern

140

Oscilloscope

50%

modulation

Location

Leveling

and

Output

Meter

Adjustment

Location

Oscillator

Adjustment

Page

1-0

3-2

3-6

3-8

3-10

4-0

5-3

5-4

5-5

5-6

5-7

5-8

5-"

5-10

5-11

5-12

5-13

5-14

5-15

5-16

5-18.

5-19.

5·20.

5-21.

5_22.

5·23.

5-24.

5-25.

5-26.

5_27.

5-28.

5_29.

5-30.

5_31.

5-32.

5·33.

-1.

7-2.

7-3.

7-4.

-5.

TtUe

Frequency-Response

Adjustments

...

Location

Frequency-Response

and

Crystal-Calibrator

Adjustments

....

Voltage

and

Resistance

Measure

INT 1000 -

Operation

...•.......

ALC

Board

Voltage

and

Resistance

Measurements,

and

PULSE

SET

OUTPUT

Operation

Transistor

Biasing

and

Operating

Characteristics

...•...........

Location

Electron

Tubes

Replacement

Oscillator

and

Amplifier

Tubes

Disassembly

Attenuator

Drive

Cable.

, .

Attenuator

Probe,

ShOWing

Pickup

Loop

and

Impedance

Matching

Network

Generator

Assembly

Location

Unlabeled

Parts

(Side

Cover

Removed)

Model

608E

Generator

Assembly

ShoWing

Location

Unlabeled

Parts

(Top

Cover

Removed)

.......•..•

Model

608F

Generator

Assembly

ShOWing

Location

Unlabeled

Parts

(Top

Cover

Removed). .

Right

Side

View Showing

Location

Unlabeled

Chassis

Components

.....

Left

Side

View Showing

Location

Unlabeled

Components

Rear

View Showing

Location

Unlabeled

Chassis

Components

Circuit

Board

Parts

Identification

Schematic

Wormation

lllustration

Schematic

Diagram

Notes

Component

Identification,

Modulator

and

ALC

Board

Generator

and

Modulator

Schematic

Diagram

Modulation

Meter,

Crystal

Calibration,

and

Power

Supply

Schematic

Diagram

Page

5-18

5-19

5-22

5-24

5-28

5_29

5-30

5-31

5-32

5-33

5-34

5-35

5-36

5-37

5-38

7-1

7-2

7-3

-5

)

•

Model 608E

Number

I-I.

5-1.

5-2.

5-3.

5-4.

5-5.

5-6.

5-7.

6-1.

6-2.

6-3.

6-4

LIST

TABLES

Title

Specifications

...............•...

Test

Equipment Required for

Maintenance .

Lubrication Chart .

Out-of-Circuit

Transistor

Resistance

Measurement .

Safe Ohmmeter Ranges for

Transistor

Resistance

Measurement .

Etched

Circuit

Soldering Equipment .

Checks Following Tube and Semiconductor

Replacement .

608E/F

Troubleshooting Procedure .

Reference Designations .

Abbreviations .

Replaceable

Parts

Code

List

of Manufacturers .

Page

1-2

5-2

5-4

5-25

5-26

5-27

5-40

6-2

6-4

6-12

List of

Tables

•

-[~

-c:JP

Section I

••

·eA·

••

-f!l-

o - o

Model

608EIF

•

••

I •

Model

608E

.1iJ1iia

Model

608F

)

1-0

Figure

1-1.

Model 60SE

and

608F

VHF

Signal Generators

Model

608E/F

SECTION

GENERAL

INFORMATION

Sedion

•

1·1.

DESCRIPTION.

1-2.

The

Hewlett-Packard

Model 608E and

608F

Signal

Generators

(see

Figure

1-1)

are

designed

meet

the

requirements

precision

laboratory

work,

and

yet

equally

useful

for

general

applications

the

VHF

frequency

range.

The

Model 608E

furnishes

signals

from

microvolt

1volt

from

MHz

480 MHz,

whiletheModel608F

supplies

signals

from

microvolt

volt

frequency

range

from

MHz

455

MHz.

The

carrier

can

amplitude

modulated by

internally

generated

sine-

wave

signals,

externally

supplied

sine-wave

pulse

signals.

The

Mooel 608F

contains

frequency

control

circuitry

which

permits

the

instrument

used

phase-lock

operation

with

the

Model 8708A

Synchronizer.

This

provision

provides

stabilized

output

across

most

the

range

the

instrument,

with a

drift

factor

of <2 x

10-1

per

minutes.

The

instruments

can

used

for

troubleshooting,

testing,

calibrating,

measuring

standing-wave

ratios,

and

checking antenna and

transmission

line

characteris-

tics.

preserve

accuracy,

equipment

design

holds

spurious

modulationto alow value

under

all

operating

conditions.

Detailed

specifications

for both

instru-

ments

are

listed

Table

1-1.

1-3.

FREQUENCY.

1-4.

The

frequency ofthec'.1tpu!

signal

indicated

adirect

reading

dial,

the

calibration

which

accurate

better

than

±O.5%

for

the

608E

and

±l% for

the

608F,

when

the

cursor

and

FINE

FREQ

are

properly

aligned.

Calibration

accuracy

may

improved

further

use

abuilt-incrystal-controlled

heterodyne

calibrator

which

furnishes

MHz

checkpoints

from 10

MHz

270 MHz,

5MHz

checkpoints

over

the

entire

frequency

range

the

instrument.

any

checkpoint

the

calibration

can

set

very

elO8e

the

calibrator

accuracy

0.01

bringing

overall

accuracy

least

±O.O5%.

F'l'equency check

point

signal.e

are

obtained

when

headphone

set

(not

fumi.ehed) is

plugged

into

the

XTAL

CAL OUTPUTjack.

The

control

for

the

output

attenuator

calibrated

both

decibels

and

volts. When

the

instrument

connected

5Q.ohm resistive

load

and

power

into

the

output

attenua·

tor

exactly

the

ATI'ENUATOR CALIBRATED

mark

(+7 dB)

the

RF OUTPUT meter,

the

level

power

voltage

applied

the

OUTPUT

connector

may

beread

directly

the

A1TENUATOR dial with

accuracy

±1 dB. When

connected

to a5O-ohm

resistive

load,

the

VSWR

the

RF OUTPUT

connector

will

nol

greater

than

1.2

(SWR

1.6 dB).

The

signal

generators

feature

automatic

output

leveling,

maintaining

the

output

within

±1

the

adjusted

output.

1-5.

MODULATION.

1-6.

The

RFoutput

signal

can be

amplitude

modulated

internally

generated

400

lOOO-cyde

sine

waves,

externally

applied

sine

waves

above

0volt

rms

over

the

frequency

range

from

Hz lo 20 kHz,

exter-

nally

applied

pulses

volts

peak-lo-peak.

When

pulse

modulated,

the

signal

generators

are

capable

producing

pulses

energy

short

micro-

seconds

Signal

frequencies

above

MHz, and

pulses

short

as 2

microsecond

above 220

MHz.

The

degree

sine-wave

modulation

continuously

variable

from

90%

by a

front-panel

control.

All

sine-wave

modu-

lation

the

output

signal

continuously

monitored

and

indicated

percentage

on a

direct

reading

modu-

lation

meter.

1-7.

RFI.

1-8.

leakage

held to a

minimum

and

such

that

when

the

output

signal

adjusted

for

micro-

volt,

the

conducted

signal

leakage

any

other

front

panel

connector

and

the

radiated

leakage

two

inches

from

the

instrument

are

each

less

than

1.0

microvolt.

1·9.

AUXILIARY

EQUIPMENT.

1-10. MODEL 11509A FUSEHOLDER.

1-11.

protect

the

output

attenuator

from

damage,

for

some

applications

(such

transceiver

testing)

desirable

insert

afuse between

the

signal

gen-

erators

and

external

equipment. The 11509A

special

coaxial

fuseholder

which

houses

atype 8AG,

1/16

amp

fuse which

protects

the output

attenuator

from

damage

the

event

that

external

voltage

accidently

applied

the

OUTPUT

connector.

The

fuseholder

has

insertion

loss

200 MHz,

300

MHz, and

0.65

400 MHz;

tis

SWR

not

greater

than

35 when connected

a50-

ohm

resistive

load.

1-12.

MODEL 1150BA TERMINATED OUTPUT

CABLE.

1-13.

This

cable

assembly

provides

aSO-ohm

ter-

mination

and

standard

binding

posts

the

end

24-

inch length of

cable.

The 11508A allows

direct

con-

nectionofthe

instruments

to a

high-impedance

circuit.

1·14.

INSTRUMENT

IDENTIFICATION.

1-15.

Hewlett-Packard

1nstruments

carry

two-sec-

tion,

eight-digit

serial

number.

The

first

three

digits

are

prefix.

The

contents

this

manual apply

those

instruments

having

the

serial

number

prefix

shown on

the

title

page.

the

serial

prefix

your

instrument

1s not mentioned on

the

title

page, in

the

Appendix

this

manual,

aManual Change Sheet

enclosed

with

the

manual,

the

corred

information

may

obtained

from

any

Hewlett-

Packard

Sales

and

Ser-

vice

Office

(see

rear

of manual for

addresses).

1-1

Section

Model

608E/F

Table

1-1.

Specifications

FREQUENCY CHARACTERISTICS

608E

Accuracy:

Within

±1

dB of

attenuator

dial

reading

any

frequency

when

output

meter

indicates

"ATTENUATOR

CALIBRATED."

input.

voltage

change

from

-2

volts

-32

volts

will

change the

output

frequency

than

0.2%

the

low

end

each

band

and

than

the

high

end

each

band.

Nominal

input

impedance,

direct

coupled.

Voltage

limits:

.:::

applied

voltage

.:::

-50V.

OUTPUT

CHARACTERISTICS

608E 608F

Output

Level:

Continu-

ously

adjustable

from

0.1

trV

into

50n

load.

Output

at-

tenuator

calibrated

and

dBm

1mW

50n).

Output

Level;

Continu-

ously

adjustable

from

0.1

/lV

into

50n

load.

Output

at-

tenuator

calibrated

and

dBm

(0 dBm =

1mW in SOn).

608F

Range:

to 455 MHz in

five

bands

(10-21,

21-

44,44-95,95-210,

and

210-455

MHz).

10-

430 MHz when

used

with 8708A

Synchro-

nizer.

Accuracy:

±1%

with

cur-

sor

adjustment.

Drift:

Less

than

parts

in 106

per

min.

pe-

riodafter

Ihr.

warm-

up.

Stability

used

with

8708A

Synchronizer.

10-

/min.

10-

/min.

Range:

10to

480 MHz

five

bands

(10-21,

21-

43,43-95,

95-215,

and

215-480 MHz).

Accuracy:

±O.5%

with

cur-

sor

adjustment.

Drift:

Less

than

parts

per

min.

period

after

hr.

warmup.

(0·

-55

·C)

-7

2x10

/10

line

voltage

change.

Tuning

Control:

Frequency

control

mechanism

provides

a i n

dial

calibrated

MHz

and

vernier

dial

for

interpolation

purposes.

Total

scale

length

approximately

inches.

Calibra-

tion:

every

othe

rMHz

from

13U

27U

MHz;

every

5MHz

above

270 MHz.

Leveling:

Internal

feedback

circuit

retains

"AT-

TENUATOR CALIBRATED"

reference

output

meter

over

wide

frequency

ranges

(typi-

cally

octave

bands).

Adjustment

front

panel

AMP.

TRIMMER

control

(only)

for

maximum

output

indication

automatically

restores

ini-

tial

carr.ier

level

for

greater

frequency

changes.

Impedance:

50n;

reflection

coefficient

<0.091

(1. 2SWR,

20.8

return

loss)

for

attenuator

setting

below

-7

dBm.

)

Resettability:

Main

frequency

control

resettability

better

than

±G.

after

initial

warmup.

FINE

FREQUENCY ADJUST prOVides

approximately

±25 kHz

settabilityat

480 MHz

(proportionately

finer

adjustment

lower

frequencies).

RFI:

Meets

all

conditions

specified

MlL-I-

618m;

permIts

receiver

sensitiVity

measure-

ments

down

least

0.1

/lV.

Auxiliary

Output:

Crystal

Calibrator:

Provide

frequency

check

points

every

1MHz

270 MHz

every

5MHz

over

the

range

the

instrument.

Head-

phone

jack

provided

for

audio

frequency

output

(headphones

not

incluC1ed).

Crystal

frequency

accuracy

better

than

0.01%

normal

room

temperatures.

Cursor

frequency

dial

adjust-

able

over

small

range

aid

interpolation

ad-

justment.

-Calibrator

maybe

turned

off

when

not

use.

Residual

FM:

<±5

parts

a10 kHz

post-

detection

bandwidth.

Harmonic

Output:

least

35 dB below

the

carrier

for

harmonic

frequencies

below

500

MHz.

Frequency

Control

Input: (608F

only).

The

608F

FREQ

CONTROL INPUT

normally

used

with

the

8708A

Synchronizer

can

also

use

for

ex-

ternal

frequency

control

varying

adc

voltage

608E

Fixed

signal

from

oscillator

(minimum

amplitude

180

rms

into

50n)

provided

front

panel

ENC

female

connector

for

use

with

external

equipment

(e.g.,

fre-

quency

counter).

608F

signal

from

Oscillator

pro

front

panel

ENC

female

connector.

Powe

levels

into

son

are

follows:

215 MHz:

-1.

dBm

215 to 400 MHz: +2. 0

dBm

400 to 430 MHz: +1. 0

dBm

Signal

for

use

with

8708A

Synchronizer

othe

external

equipment

(e.g.,

frequency

counter).

)

1-2

Model

608E/F

Section I

Table

I-I.

Specifications

(Cont.)

MODULATION CHARACTERISTICS

(Front-panel

AMP. TRIMMER

control

adjusted

for

maximum

indication

Output

Meter

and

Output

Meter

set

Attenuator

Calibrated.)

Internal

Frequency:

400 and 1000 Hz, ,:tl0%. Modula-

latton

signal

available

front

panel

BNC fe-

male

connector

for

synchronization

external

equipment.

--.

".,

"~'_I"'OOOU'"

....

""",

GENERAL

608E and

608F

Power:

115

230 V

.±IO%,

400 Hz.

Approxi-

mately

220 W.

Dimensions

CabinetMount:

13-1/4

in. (337 mm) wide,

16-3/4

in. (416

mm)

high,

in. (533 mm) deep.

Rack

Mount:

Above 220 MHz, combined

rise

and

decay

time

less

than 2. 5

~s.

On-Off Ratio: At

least

[or

pulsed

carrier

levels

5 V and above.

Input ReqUired:

Positive

pulse, 10-50 Vpeak;

input

impedance

2kn.

608F

Modulation

Level:

95%

modulation with

Output

Attenuator

0.224

mW)

be-

low; continuously

ad-

justable

with

front-

panel

MOD

LEVEL

control.

Carrier

Envelope Distortion:

Less

than

30%

and

less

than

70%

AM.

608E

Modulation Level: 0

95%

modulation

carrier

levels

0.5

and below; continu-

ously

adjustable

with

(ront-panel

MOD

LEVEL

control.

•

Modulation

Meter

Accuracy:

±5%

o(full

scale

80%,

.±.IO%

from

80%

95%

«(or

lNT

kHz

EXT

AM).

Incidental

Frequency

Modulation (at 400 and 1000

Hz modulation)

Less

than 1000 Hz peak

50%

for

frequen-

cies

above 100 MHz.

For

frequencies

below

100 MHz,

less

than 0.001% at

30%

AM.

External

Pulse

Modulation

Rise

and Decay

Time:

From

MHz

220 MHz,

combined

rise

and

decay

time

less

than

~s.

" I

t:k

'''.0'

RUR

Weight

Cabinet Mount: Net,

(28

kg). Shipping, 74

(33, 4kg).

Rack

Mount: Net,

lb (28 kg). Shipping, 83

•(37, 4kg).

Accessories

Available

11508AOutputCable prOVides

50-

termination

and

standard

binding

posts

the end

a24-

inch (610 mm) length of

cable.

Allows

direct

connection o(

the

signal

generator

to hlgh

im-

pedance

circuits.

11509A

Fuse

Holder

provides

protection

for

the

output

attenuator

when

the

608

used

for

trans-

ceiver

tests.

10514A

Mixer

foruseas

nanosecond

pulsemodu-

lator

balanced

modulator.

10515A

Doubler

for

extending

the

frequency

range.

608F

Modulation

Level:

95%

modulation with

Output

Attenuator

0.224

V(1 roW)

be-

low; continuously

ad-

justable

with

front-

panel

MOD

VEL

control. Input

re-

quired:

rms

knlnput

lmpedance).

Carrier

Envelope DistorUon:

Less

than

30%

AM,

less

than

70%

(modulation

source

distortion

less

than

5%).

External

control

carrier

level

can

achieved

through

application

voltage in EXT

mode.

Modulation Level: 0

95%

modulation

carrier

levels

0.5

and -below; continu-

ously

adjustable

with

front-panel

MOD

LEVEL

control.

In-

put

requlred:

rms

kninput

impedance).

External

Frequency:

20 kHz.

608E

1-3

Model

608E/F

SECTION

INSTALLATION

Section n

•

2-1.

INCOMING

INSPECTION.

2-2.

This

instrument

was

inspected

mechanically

and

electrically

prior

shipment.

Inspect

for

mechani-

cal

damage

received

transit

and

test

electrical

per-

formance

using

procedures

given in SectionV.

there

damage

deficiency,

electrical

performance

not within specif1cations. notify

the

carrier

and

your

Hewlett-Packard

sales

and

Service

Office

immediately

(see

11st

rear

this

manual.)

2-3.

PREPARATION

FOR USE.

2-4.

POWER

REQUIRE~{ENTS.

2-5.

The

VHF

Signal

Generator

requires

apower

source

of 115

230

volts

.!.lo%,

single

phase,

which

can

supoly

approximately

220

watts.

two-

position

slide

switch,

the

inside

rear

chassis,

per-

mits

operation

from

either

a115-

230-volt

power

soorce.

The

number

visible

the

switch

slider

in-

dicates

the

line

voltage

for

which

the

signal

generator

connected.

The

correct

fuse

rating

for

each

line

voltage

adjacent

the

switch.

prepare

the

sig-

nal

generator

for

operation,

position

the

115-230

volt

switch

that

the

number

visible

the

slider

cor-

responds

the

available

line

voltage,

and

install

fuse of

correct

r~t\.rZ

~::'!:."r~-:"!

rear

apron).

CAUTION

Before

connecting

the

power

cable,

set

the

115-230 volt

switch

for

the

line voltage

used.

2-6.

POWER CABLE.

2-7.

protect

operating

personnel,

the

National

Electrical

Manufacturers'

Association

(NEMA)

rec-

ommends

that

the

instrument

panel and

cabinet

grounded.

This

instrument

equipped with a

three-

conductor

power

cable

Which, when plugged into

appropriate

receptable,

grounds

the

instrument.

The

off-set

pin of

the

three-prong

connector

the

ground

pin.

preserve

the

protection

feature

when

operating

the

instrument

from

two-contact

outlet,

use

three-

prong

two-prong

adapter

(Hewlett-

Packard

Stock No.

1251-0049) and connect

the

green

pigtail on

the

adapter

ground.

2-8.

REPACKING

FOR

SHIPMENT.

2-9.

the

signal

generator

packaged for

shipment

use

the

original

shipping

container

and

pack-

ing

materials.

these

have

been

discarded

are

not

in condition

for

reuse,

obtain

new

materlals

from

your

local

Hewlett-

Packard

sales

and

Service

Office

(see

rear

this

manual for

locations),

these

general

instructions:

Wrap

the

signal

generator

in heavy

paper

plastic.

(IT

the

signal

generator

being

shipped

Hewlett-Packard

service

facility,

attach

tag

indicat-

ing type of

servicing

required,

return

address,

model

number,

and full

serial

number.)

Use

strong

shipping

container.

carton

made

500-600

DOUnd

test

material

will

usually

provide

adequate

protection.

Use

enough

shock-absorbing

material

inch

layer)

around

all

sides

instrument

provide

firm

cushion and

prevent

movement

inside

the

con-

tainer.

Protect

the

control

panel with

cardboard.

With

Hewlett-Packard

"noater

pack" packaging, the

foam

blocks

prOVide

sufficient

shock

protection,

and

additional

material

unnecessary.

Seal

the

shipping

container

securely.

Mark

the

shipping

container

"FRAGILE"

assure

careful

handling.

2-10.

any

correspondence

refer

the

signal

gen-

erator

model

number

and full

serial

number.

2-1

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