HP 8508A Instruction and safety manual

Table of contents

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(AI

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HP

8508A

Vector

Voltmeter

(Including

Option

001)

Operating

&

Service

Manual

re

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HP

8508A

VECTOR

VOLTMETER

(Including

Option

001)

Operating

and

Service

Manual

SERIAL

NUMBERS

_

This

manual

provides

complete

information

for

in-

struments

with

serial-number

prefix

2949U.

With

the

changes

described

in

Section

7,

this

man-

ual

also

applies

to

instruments

with

serial

numbers

prefixed

2812U.

For

additional

important

information

about

serial

numbers,

refer

to

“INSTRUMENTS

COVERED

BY

THIS

MANUAL”

in

Section

1.

NOTE

Use

this

manual

only

with

instruments

that

have

a

—

“Uy”

in

their

serial-number

prefix.

First

Edition

Copyright

@HEWLETT-PACKARD

LIMITED

SOUTH

QUEENSFERRY,

WEST

LOTHIAN,

SCOTLAND

EH30

9TG

Operating

and

Service

Manual

HP

Part

08508-90000

Printed

In

U.K.

:

May

1988

Microfiche

Operating

and

Service

Manual

HP

Part

08508-90011

Cin

HEWLETT

PACKARD

CERTIFICATION

Hewlett-Packard

Company

certifies

that

this

product

met

its

published

specifications

at

the

time

of

shipment

Srom

the

factory.

Hewlett-Packard

further

certifies

that

its

calibration

measurements

are

traceable

to

the

United

States

National

Bureau

of

Standards,

to

the

extent

allowed

by

the

Bureau's

calibration

facility,

and

to

the

calibration

facilities

of

other

International

Standards

Organization

members.

WARRANTY

This

Hewlett-Packard

instrument

product

is

warranted

against

defects

in

material

and

workmanship

for

a

period

of

one

year

from

date

of

shipment.

During

the

warranty

period,

Hewlett-Packard

Company

will

at

its

option,

either

repair

or

replace

products

which

prove

to

be

defective.

For

warranty

service

or

repair,

this

product

must

be

returned

to

a

service

facility

designated

by

HP.

Buyer

:

shall

prepay

shipping

charges

to

HP

and

HP

shall

pay

shipping

charges

to

return

the

product

to

the

Buyer.

However,

Buyer

shall

pay

all

shipping

charges,

duties,

and

taxes

for

products

returned

to

HP

from

another

country.

HP

warrants

that

its

software

and

firmware

designated

by

HP

for

use

with

an

instrument

will

execute

its

programming

instructions

when

properly

installed

on

that

instrument.

HP

does

not

warrant

that

the

operation

of

the

instrument,

or

software,

or

firmware

will

be

uninterrupted

or

error

free.

LIMITATION

OF

WARRANTY

The

foregoing

warranty

shall

not

apply

to

defects

resulting

from

improper

or

inadequate

maintenance

by

Buyer,

Buyer-supplied

software

or

interfacing,

unauthorized

modification

or

misuse,

operation

outside

of

the

environmental

specifications

for

the

product,

or

improper

site

preparation

or

maintenance.

NO

OTHER

WARRANTY

JIS

EXPRESSED

OR

IMPLIED.

HP

SPECIFICALLY

DISCLAIMS

THE

IM-

PLIED

WARRANTIES

OF

MERCHANTABILITY

AND

FITNESS

FOR

A

PARTICULAR

PURPOSE.

EXCLUSIVE

REMEDIES

THE

REMEDIES

PROVIDED

HEREIN

ARE

BUYER'S

SOLE

AND

EXCLUSIVE

REMEDIES.

HP

SHALL

NOT

BE

LIABLE

FOR

ANY

DIRECT,

INDIRECT,

SPECIAL,

INCIDENTAL,

OR

CONSEQUENTIAL

DAMAGES,

WHETHER

BASED

ON

CONTRACT,

TORT,

OR

ANY

OTHER

LEGAL

THEORY.

|

ASSISTANCE

Product

maintenance

agreements

and

other

customer

assistance

agreements

are

available

for

Hewlett-Packard

products.

For

any

assistance,

contact

your

nearest

Hewlett-Packard

Sales

and

Service

Office.

Addresses

are

provided

in

this

manual.

i

wow

ae

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en

ew

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ae

"SEB

ESR

RE

agean

-

SAFETY

CONSIDERATIONS

GENERAL

This

product

and

related

documentation

must

be

reviewed

for

familiarization

with

safety

markings

and

instructions

before

operation.

This

product

is

a

Safety

Class

|

instrument

oo

with

a

protective

earth

terminal).

BEFORE

APPLYING

POWER

Verify

that

the

product

is

set

to

match

the

available

line

voltage

and

the

correct

fuse

is

installed.

SAFETY

EARTH

GROUND

An

uninterruptible

safety

earth

ground

must

be

pro-

vided

from

the

main

power

source

to

the

product

in-

put

wiring

terminals,

power

cord,

or

supplied

power

cord

set.

SAFETY

SYMBOLS

Instruction

manual

symbol:

the

product

will

be

marked

with

this

symbol

when

it

is

necessary

for

the

user

to

refer

to

the

instruction

manual

(refer

to

Table

of

Contents.)

;

Indicates

hazardous

voltages.

+

Indicates

earth

(ground)

terminal.

The

WARNING

sign

denotes

a

hazard.

It

calls

attention

to

a

procedure,

practice,

or

the

like,

.

which,

if

not

correctly

performed

or

adhered

to,

could

result

in

personal

injury.

Do

not

proceed

beyond

a

WARNING

sign

until

the

indicated

conditions

are

fully

understood

and

met.

CAUTION}

the

CAUTION

sign

denotes

a

hazard.

It

calls

attention

to

an

operating

procedure,

practice,

or

the

like,

which,

if

not

correctly

performed

or

adhered

_

to,

could

result

in

damage

to

or

destruction

of

part:

or

all

of

the

product.

Do

not

proceed

beyond

a

CAUTION

sign

until

the

indicated

conditions

are

fully

understood

and

met.

WARNING

Any

interruption

of

the

protective

(grounding)

conductor

(inside

or

outside

the

instrument)

or

disconnecting

the

protective

earth

terminal

will

cause

a

potential

shock

hazard

that

could

re-

sulting

personal

injury.

(Grounding

one

conduc-

tor

of

a

two

conductor

outlet

is

not

sufficient

protection).

Whenever

it

is

likely

that

the

protection

has

been

impaired,

the

instrument

must

be

made

inoperative

and

-be

secured

against

any

unin-

tended

operation.

If

this

instrument

is

to

be

energized

via

an

'

autotransformer

(for

voltage

reduction)

make

sure

the

common

terminal

is

connected

to

the

earth

terminal

of

the

power

source.

Servicing

instructions

are

for

use

by

service

trained

personnel

only.

To

avoid

dangerous

elec-

tric

shock,

do

not

perform

any

servicing

unless

qualified

to

do

so.

Adjustments

described

in

the

manual

are

per-

formed

with

power

supplied

to

the

instrument

while

protective

covers

are

removed.

Energy

available

at

may

points

may,

if

contacted,

result

in

personal

injury.

Capacitors

inside

the

instrument

may

still

be

charg-d

even

if

the

instrument

has

been

discon-

nected

from

its

source

os

supply.

For

continued

protection

against

fire

hazard,

re-

place

the

line

fuse(s)

only

with

250V

fuse(s)

of

the

same

current

rating

and

type

(for

exam-

ple,

normal

blow,

time

delay,

etc.)

Do

not

use

repaired

fuses

or

short

circuited

fuseholders.

ATTENTION

Static

Sensitive

Devices

This

instrument

was

constructed

in

an

ESD

(electro-static

discharge)

protected

environment.

This

is

because

most

of

the

semi-conductor

devices

used

in

this

instrument

are

susceptible

to

damage

by

static

discharge.

Depending

on

the

magnitude

of

the

charge,

device

substrates

can

be

punctured

or

destroyed

by

contact

or

mere

proximity

of

a

static

charge.

The

results

can

cause

degradation

of

device

performance,

early

pete;

or

immediate

destruction.

These

charges

are

generated

in

numerous

ways

such

es

simple

contact,

separation

of

materials,

and

normal

motions

of

persons

working

with

static

sensitive

devices.

When

handling

or

servicing

equipment

containing

static

sensitive

devices,

adequate

precautions

must

be

taken

to

prevent

device

damage

or

destruction.

Only

those

who

are

thoroughly

familiar

with

industry

accepted

techniques

for

handling

static

sensitive

devices

should

attempt

to

service

circuitry

with

these

devices.

In

all

instances,

measures

must

be

taken

to

prevent

static

charge

build-up

on

work

surfaces

and

persons

handling

the

devices.

SN

.

«

se

Mannan

J

f

G5

HEWLETT

PACKARD

HERSTELLERBESCHEINIGUNG

_.

Hiermit

wird

bescheinigt,

daB

das

Gerat‘System

8508A

in

Ubereinstimmung

mit

den

Bestimmungen

von

Postverfiigung

1046/84

funkenstért

ist.

Der

Deutschen

Bundespost

wurde

das

Inverkehrbringen

dieses

Gerates/Systems

angezeigt

und

die

Berechtigung

zur

Uberpriifung

der

Serie

auf

Einhaltung

der

Bestimmungen

eingeraumt.

Zusatzinformation

fir

MeB-

und

Testgerate

Werden

Me

und

Testgerate

mit

ungeschirmten

Kabeln

und/oder

in

offenen

MeSaufbauten

verwendet,

so

ist

vom

Betreiber

sicherzustellen,

daB

die

Funk-Entstérbestimmungen

unter

Betriebsbedingungen

an

seiner

Grundstiicksgrenze

eingehalten

werden.

MANUFACTURER’S

DECLARATION

—

This

is

to

certify

that

this

product

8508A

meets

the

radio

frequency

interference

requirements

of

directive

1046/84.

The

German

Bundespost

has

been

notified

that

this

equipment

was

put

into

circulation

and

was

granted

the

right

to

check

the

product

type

for

compliance

with

these

requirements.

Note:

If

test

and

measurement

equipment

is

operated

with

unshielded

cables

and/or

used

for

measurement

on

open

set-ups,

the

user

must

ensure

that

under

these

operating

conditions,

the

radio

frequency

interference

limits

are

met

at

the

border

of

his

premises.

BemPeeSeeeeeeee

Go

eseanaeeeaagaan

Contents

Contents

SECTION

1

-

GENERAL

INFORMATION

Introduction

1-1

Specifications

1-1

Safety

Considerations

1-1

Instruments

Covered

by

Manual

1-1

Description

1-2

Options

1-3

Mechanical

Options

1-3.

Instrument

Options

1-4

Documentation

Options

1-4

Support

Option

1-4

Accessories

Supplied

1-4

Equipment

Available

for

use

with

the

HP

8508A.

1-4

Recommended

Test

Equipment

1-5

SECTION

2

-

INSTALLATION

Introduction

2-1

Initial

Inspection

2-1

Preparation

for

Use

2-2

Power

Requirements

2-2

Line

Voltage

Selection

and

Fuse

2-2

Power

Cable

2-3

Operating

Environment

2-3

Mating

Connectors

2-4

Rack

Mounting

2-4

Hewlett-Packard

Interface

Bus

2-5

HP-IB

Connector

2-5

HP-IB

Cables

2-6

HP-IB

Address

Selection

2-6

Storage

and

Shipment

2-8

Environment

(2-8

Packaging

2-8

SECTION

3

-

OPERATION

Getting

Started

3-1

Introduction

3-1

Operator’s

Maintenance

3-1

New

User

Introduction

3-2

Front

Panel

Features

"

3-4

-Measurement

Keys

3-4

Function

Keys

3-5

Instrument

State

3-6

Display

Area

Keys

3-6

Rear

Panel

Features

3-8

E1089

Contents

Making

Measurements

Basic

Measurements

Introduction

Getting

Acquainted

with

the

Vector

Voltmeter

Measurements

with

probes

What

you

have

achieved

Advanced

Measurements

Measurements

in

a

50

ohm

system

Typical

Configurations

Probing

measurements

with

external

source

Transmission

measurements

in

50

ohms

-

Probe

Inputs

Transmission

measurements

in

50

ohms

-

Direct

Inputs

Reflection

measurements

in

50

ohms

-

Probe

Inputs

Reflection

measurements

in

50

ohms

-

Direct

Inputs

Pee

Operation

-

The

Hewlett-Packard

Interface

Bus

HP-1B

Capability

Local

and

Remote

Operation

Addressing

Power-on

Default

Conditions

Data

Messages

Instrument

Commands

Service

Requests

Status

Reporting

HP-IB

Response

Formats

HP-IB

Command

Set

Summary.

Command

Reference

SECTION

4

-

PERFORMANCE

TESTS

Introduction

SECTION

5

-

ADJUSTMENTS

Introduction

Warm-up

Time

Safety

Considerations

Equipment

Required

Post

Repair

Adjustments

Related

Adjustments

Adjustable

Components

Power

Supply

Adustments:

+

12.0V,

-12.

ov

and

+5.0V

IF

Assembly

Adjustments

Set

up

the

centre

frequency

of

the

Channel

A

and

B

Bandpass

filters

To

equalize

the

A

and

B

Channel

phase

shift

Set

up

the

amplitude

path

gain

using

an

external

20kHz,

100mV

reference

source

Search

and

Lock

Assembly

Adjustments

Set

the

centre

frequency

of

the

1.62MHz

and

32.4MHz

Oscillators

~

euepepnpaenunnna@aua

4-1

E1089

_

ls

ee

eee,

Beene

Males

SECTION

6

-

REPLACEABLE

PARTS

~

Introduction

Abbreviations

Replaceable

Parts

List

-

Ordering

Information

-Direct

Mail

Order

System

SECTION

7

-

MANUAL

CHANGES

a

Introduction

SECTION

8

-

SERVICE

Introduction

Safety

Considerations

After

Service

Product

Safety

Checks

Anti-Static

Precautions

Recommended

Test

Equipment

Troubleshooting

General

Description

Disassembly

and

Reassembly

Procedure

for

the

Standard

Instrument

Disassembly

and

Reassembly

Procedure

for

Option

001

Instruments

Front

Panel

Assembly

Al

Error

Codes

200

Series

Power

Supply

Assembly

A2

Error

Codes

300

Series

IF

Assembly

A3

Error

Codes

400

Series

©

Search

and

Lock

Assembly

A4

-

Error

Codes

500

Series

Processor

Assembly

A5

Error

Codes

600

Series

E1089

Contents

8-3

8-11

8-15

8-17

8-19

General

Information

1-0

Figure

1-1.

The

HP

8508A

Vector

Voltmeter

a

ra

ee

@Munue