HP 8660C Bedienungsanleitung

Inhaltsverzeichnis

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Printed

JANUARY

1981

©Hewlett-Packard

Co.

1975,1977,1979,

1981

General

Information

Model

8660C

Figure

1-1.

Model

8660C

and

Accessories

Supplied

1-0

Model

8660C

General

Information

SECTiOM

I

GEiMERAL

INFORMATION

1-1.

INTRODUCTION

1-2.

This

manual

contains

all

information

required

to

install,

operate,

test,

adjust

and

service

the

Hewlett-Packard

Model

8660C

Synthesized

Signal

Generator

mainframe.

This

section

covers

instru¬

ment

identification,

specifications

and

other

basic

information.

Figure

1-1

shows

a

front

view

of

the

instrument

and

accessories

supplied.

1-3.

The

other

various

sections

of

this

manual

provide

information

as

follows:

a.

SECTION

II,

INSTALLATION,

provides

information

relative

to

incoming

inspection,

power

requirements,

mounting,

packing

for

shipment,

etc.

b.

SECTION

in,

OPERATION,

provides

information

relative

to

operating

the

instrument.

c.

SECTION

IV,

PERFORMANCE

TESTS,

provides

information

required

to

ascertain

that

the

instrument

is

performing

in

accordance

with

pub¬

lished

specifications.

d.

SECTION

V,

ADJUSTMENTS,

provides

information

required

to

properly

adjust

and

align

the

instrument

after

repairs

are

made.

e.

SECTION

VI,

REPLACEABLE

PARTS,

provides

ordering

information

for

all

replaceable

parts

and

assemblies.

f.

SECTION

VII,

MANUAL

CHANGES,

provides

manual

change

information

necessary

to

document

all

prefixes

listed

on

the

title

page.

In

add¬

ition,

this

section

also

contains

recommended

modi¬

fications

for

the

earlier

instrument

configurations.

g.

SECTION

VIII,

SERVICE,

includes

all

information

required

to

service

the

instrument

when

a

malfunction

occurs.

1-4.

Packaged

with

this

instrument

is

an

Operating

Information

Supplement.

This

is

simply

a

copy

of

the

first

three

sections

of

this

manual

(less

Table

1-2).

This

supplement

should

stay

with

the

instru¬

ment

for

use

by

the

operator.

Additional

copies

of

the

Operating

Information

Supplement

may

be

ordered

separately

through

your

nearest

Hewlett-

Packard

office.

The

part

number

is

listed

on

the

inside

title

page

of

this

manual

below

the

Manual

Part

Number.

1-5.

Also

listed

on

the

inside

title

page

of

this

manual,

below

the

manual

part

number,

is

a

“Microfiche”

part

number.

This

number

may

be

used

to

order

4x6

inch

microfilm

transparancies

of

the

manual.

Each

microfiche

contains

up

to

60

photo-duplicates

of

the

manual

pages.

The

micro¬

fiche

package

also

includes

the

latest

Manual

Changes

Supplement

as

well

as

all

pertinent

Service

Notes.

1-6.

SPECiFiCATlONS

1-7.

Instrument

specifications

are

listed

in

Table

1-1.

These

specifications

are

the

performance

standards

or

limits

against

which

the

instrument

may

be

tested.

1-8.

INSTRUMENTS

COVERED

BY

MANUAL

1-9.

This

instrument

has

a

two-part

serial

number.

The

first

four

digits

and

the

letter

comprise

the

serial

number

prefix.

The

last

five

digits

form

the

sequential

suffix

that

is

unique

to

each

instrument.

The

contents

of

this

manual

apply

directly

to

instruments

having

the

same

serial

number

pre-

fix(es)

as

listed

under

SERIAL

NUMBERS

on

the

inside

title

page.

1-10,

An

instrument

manufactured

after

the

print¬

ing

of

this

manual

may

have

a

serial

prefix

that

is

not

listed

on

the

inside

title

page.

This

unlisted

serial

prefix

indicates

that

the

instrument

is

dif¬

ferent

from

those

documented

in

this

manual.

The

manual

for

this

instrument

is

supplied

with

a

yellow

Manual

Changes

supplement

that

contains

“change

information”

that

documents

the

differences.

1-11.

In

addition

to

change

information,

the

sup¬

plement

may

contain

information

for

correcting

errors

in

the

manual.

To

keep

this

manual

as

current

and

accurate

as

possible,

Hewlett-Packard

recommends

that

you

periodically

request

the

latest

Manual

Changes

supplement

for

this

manual.

The

supplement

for

this

manual

is

keyed

to

this

manual’s

print

date

and

part

number,

both

of

1-1

General

Information

Model

8660C

Table

1-1.

Model

8660C

Specifications

(1

of

2}

SPECIFICATIONS

Frequency

Selection:

Keyboard

control

panel

allows

selection

of

CW

(or

center

frequency)

by

entry

keys

or

synthesized

tuning

dial.

Least

significant

digit

either

1

Hz

(standard)

or

100

Hz

(Option

004).*

Reference

Oscillator:

Internal:

10

MHz

quartz

oscillator.

Aging

rate

less

than

±3

parts

in

10®

per

24

hours

after

72

hour

warmup

(±3

parts

in

10®

per

24

hours

after

30

day

warmup,

Option

001).

External:

Rear

panel

switch

allows

operation

from

any

5

MHz

or

10

MHz

signal

at

a

level

between

0.5V

and

2.5V

rms

into

170

ohms.

Stability

and

spectral

purity

will

be

partially

determined

by

characteristics

of

external

reference

oscillator.

Reference

Output:

Rear

panel

BNC

connector

provides

output

of

sig¬

nal

selected

(INT.

or

EXT.)

at

the

following

levels

into

170

ohms:

Internal

Reference:

0.75V

to

1.5

Vrms.

External

Reference:

Nominally

equal

to

external

input.

Display:

Ten-digit

numerical

LED

display

of

CW

frequency

is

active

in

either

local

or

remote

mode.

Spring-

loaded

pushbuttons

provide

display

of

sweep

width,

selected

step

size,

or

characters

being

entered

on

the

keyboard.

Synthesized

Search:

Synthesized

search

dial

changes

the

synthesized

out¬

put

frequency

180

steps

per

revolution

(with

the

86601A,

the

COARSE

and

STEP

tuning

are

desensi¬

tized

to

36

steps/revolution).

Step

sizes

are

1

Hz,

1

kHz,

1

MHz,

or

any

step

size

entered

through

the

keyboard.

Digital

Sweep:

Type:

Symmetrical

about

CW/center

frequency.

Sweep

width

is

divided

into

100

synthesized

steps

for

fastest

sweep

speed

or

100

steps

for

slower

speeds

or

Manual

Sweep.

Sweep

Width:

Continuously

adjustable

over

range

of

RF

section

installed.

Smallest

step

size

is

equal

to

frequency

resolution

of

mainframe.

Sweep

End

Point

Accuracy:

Same

as

reference

oscil¬

lator

accuracy.

Sweep

Speed:

Selectable

0.1

sec,

1

sec,

or

50

sec

per

sweep

(Auto

or

Single).

Sweep

Output:

0

to

+8V

stepped

ramp,

100

or

1000

equal

steps

depending

on

sweep

speed.

Manual

Sweep:

Synthesized

search

dial

allows

manual

sweep

over

width

selected

in

1000

steps

(LED

display

follows

output

frequency

during

manual

sweep).

Single

Sweep:

Initiated

by

momentary

contact

pushbutton.

Frequency

Stepping:

After

a

step

size

has

been

entered

on

the

keyboard,

depressing

STEP

t

or

STEP

4

button

will

increment

frequency

up

or

down

by

the

desired

step

size.

Step

Accuracy:

Same

as

reference

oscillator

accuracy.

REMOTE

PROGRAMMING

CW

frequency,

frequency

stepping

(STEP

t

or

STEP

4)

and

output

level,

and

most

modulation

functions

are

programmable.

Note:

digital

sweep

is

NOT

programmable.

Frequency:

CW

frequency

is

programmable

over

entire

range

with

same

resolution

obtained

in

manual

operation.

Frequency

Step:

STEP

t

or

STEP

4-

may

also

be

programmed

to

change

output

frequency

by

a

previously

selected

step

size.

Output

Level:

Programmable

in

1

dB

steps

over

the

output

range

of

the

RF

section

installed

(for

output

level

accuracy

see

RF

section

specifications).

Modulation:

See

specifications

for

modulation

and

RF

section

installed.

Programming

Input:

Connector

Type:

36

pin

Cinch

type

(mating

connec¬

tor

supplied).

(Optional

HP-IB

interface;

24

pin

Cinch

type

57

(mating

connector

NOT

supplied)).

Logic:

TTL

compatible

(negative

true)

“0”

logic

state

corresponds

to

+2V

or

higher.

“1”

logic

state

corresponds

to

+0.8V

or

lower.

Internal

Fan-in

from

Programming

Connector:

10;

(required

current

approximately

15

mA

per

line

in

the

“1”

state).

*When

using

86603A

RF

section

above

1300

MHz

least

significant

digit

becomes

either

2

Hz

(standard)

or

200

Hz

(Option

004).

1-2

Model

8660C

General

Information

Table

1-1.

Model

8660C

Specifications

(2

of

2)

GENERAL

Operating

Temperature

Range:

0°

to

+55°C.

Leakage:

Meets

radiated

and

conducted

limits

of

MIL

I-6181D.

Power;

100

or

120

Vac,

+5

—10%

at

48

to

440

Hz.

200

or

240

Vac,

+5

-10%

at

48

to

66

Hz.

400

VA

maximum.

Weight:

(Mainframe

only);

Net,

23.2

kg

(51

!b),

Shipping

28.6

kg

(63

lb).

Options:

Option

001:

±3

x

10'^

/day

internal

reference

oscillator.

Option

002:

No

internal

reference

oscillator.

Option

003:

Operation

from

50

to

400

Hz

line.

Option

004:

100

Hz

frequency

resolution

(200

Hz

above

1300

MHz

center

frequency.)

Option

005:

HP-IB

programming

interface.

Option

100:

11661B

factory

installed.

Option

908:

Rack

Mounting

Kit.

which

appear

on

the

inside

title

page.

Compli¬

mentary

copies

of

the

supplement

are

available

from

Hewlett-Packard.

1-12.

For

information

concerning

a

serial

number

prefix

not

listed

on

the

inside

title

page

or

in

the

Manual

Changes

supplement,

contact

your

nearest

Hewlett-Packard

office.

1-13.

DESCRIPTION

1-14.

The

Model

8660C

Synthesized

Signal

Gener¬

ator

Mainframe

requires

two

plug-in

sections

to

provide

a

useable

RF

output.

The

plug-ins

required

are

an

RF

Section

and

a

Modulation

(or

Auxiliary)

Section.

These

plug-in

sections

are

inserted

into

the

front

of

the

Model

8660C;

all

operating

controls

are

on

the

front

panels

of

the

plug-in

sections

or

on

the

mainframe

panel.

1-15.

An

internal

plug-in

unit,

the

Frequency

Extension

Module

(HP

accessory

number

11661)

is

required

when

any

RF

Section

other

than

the

HP

Model

86601

is

in

use,

1-16.

GENERAL

OPERATING

PRINCIPLES

1-17.

All

of

the

signals

generated

in

the

Model

8660C

are

phase

locked,

directly

or

indirectly,

to

a

100

MHz

master

oscillator

in

the

reference

section.

The

100

MHz

master

oscillator

is

phase

locked

to

an

internal

temperature

controlled

oscillator

or

to

an

external

standard.

Provisions

are

made

for

the

internal

oscillator

to

be

used

as

a

reference

signal

for

other

equipment.

1-18.

The

Model

8660C

uses

synthesizer

tech¬

niques

to

provide

digitally

controlled,

precise

RF

signals

which

are

used

in

the

RF

Section

output

plug-ins

to

produce

the

selected

output

frequency.

The

output

frequencies

are

exactly

those

selected

in

1

Hz

or

2

Hz

increments

in

the

standard

instruments,

or

in

100

Hz

or

200

Hz

increments

in

Option

004

instruments.

1-19.

Six

phase

locked

loops,

(four

in

Option

004

instruments),

all

phase

locked

to

the

100

MHz

master

oscillator,

are

used

to

generate

the

RF

signals

used

in

the

RF

Section

plug-ins

to

produce

the

final

output

signal.

1-20.

The

Model

8660C

output

frequency

may

be

selected

by

front

panel

controls

or

by

a

remote

programming

device.

1-21.

Operating

of

the

plug-in

sections

may

also

be

remotely

programmed

through

the

mainframe

circuits.

1-22.

Descriptions,

operating

instructions

and

ser¬

vice

information

for

the

various

plug-in

sections

is

provided

in

separate

manuals.

NOTE

The

8660

family,

and

plug-ins

available

are

described

briefly

on

the

first

foldout

Sheet.

1-23.

OPTIONS

1-24.

Option

001:

Reference

Oscillator

with

±

3

X

10'®

/

per

day

stability.

1-25.

Option

002:

No

internal

standard

reference

oscillator.

1-26.

Option

003:

50

to

400

Hz

ac

operation.

1-27.

Option

004:

100

Hz

resolution

below

1300

MHz,

200

Hz

resolution

above

1300

MHz.

1-3

General

Information

Model

8660C

1-28.

Option

005.

Hewlett-Packard

Interface

Bus

installed

instead

of

BCD

interface.

HP-IB

utilizes

some

ASCII

interface

codes

(also

previously

refer¬

red

to

as

General

Purpose

Interface

Bus).

1-29.

Option

100.

Adds

an

internal

plug-in,

the

11661

(for

use

with

an

86602

or

86603

RF

Sec¬

tion)

before

the

instrument

is

shipped

from

the

factory.

1-30.

Option

908.

Adds

a

rack

mounting

kit.

If

the

8660C

was

purchased

without

the

rack

mounting

option,

the

kit

may

be

ordered

from

the

nearest

Hewlett-Packard

office

using

HP

part

number

08660-60347.

1-31.

EQUIPMENT

REQUIRED

BUT

NOT

SUPPLIED

a.

A

detachable

three-wire

power

cable.

The

type

of

power

cord

will

be

determined

by

the

ship¬

ment

destination.

b.

An

accessory

kit,

part

number

08660-

60070,

consisting

of

the

following:

1

Connector,

Type

N-to-BNC

1

Extender

Board,

20

contact

1

Extender

Board,

24

contact

2

Extender

Boards,

15

contact

1

Extender

Board,

18

contact

1

Connector

36

pin

with

hood

and

clamp

1

Extender

Board

A3

Interface,

18

Contact

1

Extender

Board

A3

Interface,

12

Contact

1

Interface

Extender

Board

Cable

1250-

5060-

5060-

5060-

6060-

0780

0256

0258

0276

0277

1251-0084

08660-60348

08660-60349

08660-60361

1-32.

An

RF

Section

and

a

Modulation

or

Auxil¬

iary

Section

must

be

installed

in

the

Model

8660C

mainframe.

In

addition

when

an

RF

Section

such

as

the

86602

or

86603

is

used,

the

internal

Fre¬

quency

Extension

Module

(Model

11661)

must

be

used.

1-33.

EQUIPMENT

AVAILABLE

1-34.

A

service

kit,

Hewlett-Packard

accessory

number

11672A,

is

recommended

for

servicing

and

adjusting

the

mainframe

and

the

plug-in

sections.

Contents

of

the

service

kit

are

listed

in

Table

1-2.

Individual

items

in

the

kit

may

be

ordered

separ¬

ately

if

desired.

1-35.

ACCESSORIES

SUPPLIED

1-36.

The

following

accessories

are

provided

with

the

Model

8660C:

1-37.

WARRANTY

1-38.

Certification

and

warranty

information

for

the

Model

8660C

appears

on

the

inside

front

cover

of

this

manual.

1-39.

TEST

EQUIPMENT

AND

ACCESSORIES

1-40.

Table

1-2

lists

the

test

equipment

and

acces¬

sories

recommended

to

test,

adjust,

and

service

the

Model

8660C.

1-41.

ELECTRICAL

PROTECTION

1-42.

The

safety

classification

of

this

instrument

is

Safety

Class

I.

1-43.

This

apparatus

has

been

designed

and

tested

to

operate

in

a

safe

manner.

The

Operating

and

Service

Manual

contains

information,

warnings

and

cautions

which

must

be

followed

by

the

user

to

ensure

safe

operation

and

to

retain

safe

operating

conditions.

Model

8660C

Installation

2-1.

INTRODUCTION

2-2.

This

section

provides

information

on

in¬

coming

inspection,

selecting

the

input

line

voltage,

operating

environment,

and

information

applicable

to

bench

and

rack

mounted

operation

of

the

Model

8660C.

2-3.

INITIAL

INSPECTION

2-4.

Inspect

the

shipping

container

for

damage.

If

the

shipping

container

or

cushioning

material

is

damaged

it

should

be

kept

until

the

contents

of

the

shipment

have

been

checked

mechanically

and

electrically.

The

contents

of

the

shipment

are

shown

in

Figure

1-1,

and

the

procedures

for

checking

electrical

performance

are

given

in

Section

IV.

If

the

contents

are

incomplete,

if

there

is

mechanical

dam^e

or

defects,

or

if

the

instru¬

ment

does

not

pass

the

electrical

performance

test,

notify

the

nearest

Hewlett-Packard

office.

If

the

shipping

container

is

damaged

or

the

cushioning

material

shows

signs

of

stress,

notify

the

carrier

as

well

as

the

Hewlett-Packard

office.

Keep

the

shipping

materials

for

the

carrier’s

inspection.

The

HP

office

will

arrange

for

repair

or

replacement

without

waiting

for

claim

settlements.

2-5.

The

warranty

statement

for

the

instrument

is

on

the

inside

front

cover

of

this

manual.

Contact

the

nearest

Sales/Service

Office

for

information

relative

to

warranty

claims.

2-6.

PREPARATION

FOR

USE

2-7.

Power

Requirements.

2-8.

The

Model

8660C

requires

a

power

source

of

100,

120,

220,

or

240

volts

+5%,

-10%,

48-66

Hz.

Power

consumption

is

approximately

400

VA

maximum.

2-9.

Line

Voltage

Selection

CAUTION

To

prevent

damage

to

the

instrument

make

the

line

voltage

selection

BEFORE

connecting

the

line

power.

Also

ensure

the

line

power

cord

is

connected

to

a

line

power

circuit

that

is

provided

with

a

protective

earth

contact.

2-10.

A

rear

panel

line

power

module,

(A7),

permits

operation

from

100,120,

220,

or

240

Vac.

The

number

visible

in

the

window

(located

on

the

module)

indicates

the

nominal

line

voltage

to

which

the

instrument

must

be

connected.

2-11.

To

prepare

the

instrument

for

operation,

slide

the

fuse

compartment

cover

to

the

left

(the

line

power

cable

must

be

disconnected).

Pull

the

handle

marked

FUSE

PULL

and

remove

the

fuse;

rotate

the

handle

to

the

left.

Gently

pull

the

printed

circuit

voltage

selector

card

from

its

slot

and

orient

it

so

that

the

desired

operating

voltage

appears

on

the

top-left

side

(see

Figure

2-1).

Firmly

push

the

voltage

selector

card

back

into

its

slot.

Rotate

the

FUSE

PULL

handle

to

the

right,

install

a

fuse

of

the

correct

rating,

and

slide

the

fuse

compartment

cover

to

the

right.

NOTE

For

110-~120V

line,

use

4A

slo-blo

fuse,

HP

Stock

No.

2110-0635.

For

220-240V

line,

use

2A

slo-blo

fuse,

HP

Stock

No.

2110-0303.

To

avoid

the

possibility

of

injury

or

death,

the

following

precautions

must

be

followed

before

the

Instrument

is

switched

on:

a.

Note

that

the

protection

provided

by

grounding

the

instrument

cabinet

may

be

lost

If

any

power

cable

other

than

the

three¬

pronged

type

supplied

is

used

to

couple

the

ac

line

voltage

to

the

instrument.

b.

If

this

Instrument

is

to

be

energized

via

an

autotransformer

to

reduce

or

increase

the

line

voltage,

make

sure

that

the

common

terminal

is

connected

to

the

earthed

pole

of

the

power

source.

c.

The

power

cable

plug

shall

only

be

inserted

into

a

socket

outlet

provided

with

a

protec¬

tive

earth

contact.

The

protective

action

must

not

be

negated

by

the

use

of

an

extension

cord

without

a

protective

conductor

(grounding).

d.

Before

switching

on

the

instrument,

the

protective

earth

terminal

of

the

instrument

must

be

connected

to

a

protective

conductor

of

the

power

cord.

This

is

accomplished

by

ensuring

that

the

instrument's

internal

earth

terminal

is

correctly

connected

to

the

instru¬

ment's

chassis

and

that

the

power

cord

is

wired

correctly.

2-1

Installation

Model

8660C

To

avoid

the

possibility

of

hazardous

electrical

shock,

do

not

oper¬

ate

this

instrument

at

line

voltages

greater

than

126.5

Vac

with

line

frequencies

greater

than

66

Hz

(leakage

currents

at

these

line

settings

may

exceed

3.5

mA).

Figure

2-1.

Line

Voltage

Selection

NOTE

The

correct

fuse

rating

for

the

line

voltage

selected

is

listed

on

the

line

power

module.

More

information

about

fuses

is

given

in

the

table

of

replaceable

parts

in

Section

VI

(reference

designa¬

tion

is

A7F1).

2-12.

Power

Cable

2-13.

In

accordance

with

international

safety

standards,

this

instrument

is

equipped

with

a

three-wire

power

cable.

When

connected

to

an

appropriate

power

line

outlet,

this

cable

grounds

the

instrument

cabinet.

The

type

of

power

cable

plug

shipped

with

each

instrument

depends

on

the

country

of

destination.

Refer

to

Figure

2-2

for

the

part

numbers

of

the

power

cable

plugs

available.

2-14.

Mating

Connectors

2-15.

Internal

mating

connectors

between

the

Model

8660C

and

the

plug-in

sections

are

in

fixed

positions.

Refer

to

Figure

8-132

for

plug-in

con¬

nector

information.

Refer

to

Figure

8-109

for

information

relative

to

the

remote

control

connector,

J3.

2-16.

Operating

Environment

2-17.

The

operating

environment

should

be

within

the

following

limitations:

Temperature.0

C

to

+55°

C

Humidity.<95%

relative

Altitude.<4600

metres

(15

000

feet)

2-18.

A

forced

air

cooling

system

is

used

to

maintain

the

operating

temperature

required

by

the

instrument.

The

air

exhaust

fan

is

located

on

the

rear

panel

of

the

instrument;

the

air

intake

is

through

the

side

panels

of

the

instrument.

When

operating

the

instrument,

choose

a

location

that

provides

at

least

three

inches

of

clearance

at

the

rear

and

at

least

an

inch

of

clearance

for

each

side.

The

clearances

provided

by

the

plastic

feet

in

bench

stacking

and

the

filler

strip

in

rack

mount¬

ing

are

adequate

for

the

top

and

bottom

cabinet

surfaces.

2-2

Model

8660C

Installation

220/240V

OPERATION

PLUG*:

SEV

1011.1959-24507

TYPE

12

CABLE*:

HP

8120-2104

220/240V

100/120V

^

OPERATION

OPERATION

PLUG*:

NZSS

198/AS

C112

PLUG*:

NEMA

5-15P

CABLE*:

HP8120-1369

CABLE*:

8120-1378

220/240V

OPERATION

PLUG*:

NEMA

6-15P

CABLE*:

HP

8120-0698

220/240V

PLUG*:

CEE7-Vtl

CABLE*;

HP8120-1689

220/240V

*The

number

shown

for

the

plug

is

the

industry

identifier

for

the

plug

only.

The

number

shown

for

the

cable

is

an

HP

part

number

for

a

complete

cable

including

the

plug.

Figure

2-2.

Power

Cable

HP

Part

Numbers

2-19.

Bench

Operation

2-20.

The

instrument

has

plastic

feet

and

a

fold-

away

tilt

stand

for

convenience

in

bench

operation.

The

tilt

stand

raises

the

front

of

the

instrument

for

easier

viewing

of

the

control

panel

and

the

plastic

feet

are

shaped

to

make

full

width

modular

instruments

seif

aligning

when

stacked.

2-21.

Rack

Mounting

{Option

908)

2-22.

The

8660C

Option

908

is

supplied

with

a

rack

mounting

kit.

This

kit

contains

all

the

neces¬

sary

hardware

and

installation

instructions

for

mounting

the

instrument

in

a

rack

with

19-inch

spacing

(see

Figure

2-3).

The

HP

part

number

for

this

kit

is

08660-60347.

2-23.

STORAGE

AMD

SHIPMENT

2-24.

Environment

2-25.

The

instrument

should

be

stored

in

a

clean,

dry

environment.

The

following

environmental

limitations

apply

to

both

storage

and

shipment:

Temperature

.—40°Cto+75"C

Humidity

.<95%

relative

Altitude

.

.

.

.

<7600

metres

(25

000

feet)

2-26.

Packaging

2-27.

Tagging

for

Service.

If

the

instrument

is

being'

returned

to

Hewlett-Packard

for

service,

please

Figure

2-3.

Preparation

for

Rack

Mounting

complete

one

of

the

blue

repair

tags

located

at

the

end

of

this

manual

and

attach

it

to

the

instrument.

2-28.

Original

Packaging.

Containers

and

materials

identical

to

those

used

in

factory

packaging

are

available

through

Hewlett-Packard

offices.

If

the

instrument

is

being

returned

to

Hewlett-Packard

for

servicing,

attach

a

tag

indicating

the

type

of

.service

required,

return

address,

model

number,

and

full

serial

number.

Also,

mark

the

container

FRAGILE

to

assure

careful

handling.

In

any

correspondence,

refer

to

the

instrument

by

model

number

and

full

serial

number.

2-3

Installation

Model

8660C

2-29.

Other

Packaging.

The

following

general

in¬

structions

should

be

used

for

re-packaging

with

commercially

available

materials:

a.

Wrap

the

instrument

in

heavy

paper

or

plastic.

(If

shipping

to

a

Hewlett-Packard

office

or

service

center,

attach

a

tag

indicating

the

type

of

service

required,

return

address,

model

number,

and

full

serial

number.)

b.

Use

a

strong

shipping

container.

A

double¬

wall

carton

made

of

2.4

MPa

(350

psi)

test

material

is

adequate.

c.

U

se

enough

shock-absorbing

material

(75—

100

mm;

3

to

4-inch

layer)

around

all

sides

of

the

instrument

to

provide

firm

cushion

and

prevent

movement

inside

the

container.

Protect

the

control

panel

with

cardboard.

d.

S

eal

the

shipping

container

securely.

e.

M

ark

the

shipping

container

FRAGILE

to

assure

careful

handling.

2-4