HP 8414A Manual de servicio

CERTIFICATION

Hewlett-Packard

Company

certifies

that

this

product

met

its

published

specifications

the

time

shipment

from

the

factory.

Hewlett-Packard

further

certifies

that

its

calibration

measurements

are

traceable

the

United

States

National

Bureau

Standards,

the

extent

allowed

the

Bureau’s

calibration

facility,

and

the

calibration

facilities

other

International

Standards

Organization

members.

WARRANTY

This

Hewlett-Packard

instrument

product

warranted

against

defects

material

and

workmanship

for

period

one

year

from

date

shipment.

During

the

warranty

period,

Hewlett-Packard

Com¬

pany

will,

its

option,

either

repair

replace

products

which

prove

defective.

For

warranty

service

repair,

this

product

must

returned

service

facility

designated

HP.

Buyer

shall

prepay

shipping

charges

and

shall

pay

shipping

charges

return

the

product

Buyer.

However,

Buyer

shall

pay

all

shipping

charges,

duties,

and

taxes

for

products

returned

from

another

country.

warrants

that

its

software

and

firmware

designated

for

use

with

instrument

will

execute

its

programming

instructions

when

properly

installed

that

instrument.

does

not

warrant

that

the

operation

the

instrument,

software,

firmware

will

uninterrupted

error

free.

LIMITATION

WARRANTY

The

foregoing

warranty

shall

not

apply

defects

resulting

from

improper

inadequate

maintenance

Buyer,

Buyer-supplied

software

interfacing,

unauthorized

modification

misuse,

operation

outside

the

environmental

specifications

for

the

product,

improper

site

preparation

main¬

tenance.

OTHER

WARRANTY

EXPRESSED

IMPLIED.

SPECIFICALLY

DISCLAIMS

THE

IM¬

PLIED

WARRANTIES

MERCHANTABILITY

AND

FITNESS

FOR

PARTICULAR

PURPOSE.

EXCLUSIVE

REMEDIES

THE

REMEDIES

PROVIDED

HEREIN

ARE

BUYER’S

SOLE

AND

EXCLUSIVE

REMEDIES.

SHALL

NOT

LIABLE

FOR

ANY

DIRECT,

INDIRECT,

SPECIAL,

INCIDENTAL,

CONSE¬

QUENTIAL

DAMAGES,

WHETHER

BASED

CONTRACT,

TORT,

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

the

back

this

manual.

8414A

POLAR

DISPLAY

SERIAL

NUMBERS

This

manual

applies

directly

instruments

with

serial

numbers

prefixed

981

and

1144A.

With

changes

described

Section

VII,

this

manual

also

applies

instruments

with

serial

numbers

pre¬

fixed

936

and

940.

For

additional

important

information

concerning

serial

numbers,

see

INSTRUMENTS

COVERED

MANUAL

Section

This

manual

does

not

apply

serial

numbers

pre¬

fixed

933

and

below.

HEWLETT-PACKARD

COMPANY

1970

1501

PAGE

MILL

ROAD,

PALO

ALTO,

CALIFORNIA,

MANUAL

PART

NO.

08414-90016

Microfiche

Part

No.

08414-90013

Printed

SEPT.

1973

Whol

HEWLETT

mLnM

Packard

Table

Contents

Model

8414A

TABLE

CONTENTS

Section

Page

GENERAL

INFORMATION

.1-1

1-1.

Description

.1-1

1-4.

Equipment

Supplied

.1-2

1-6.

Instruments

Covered

Manual.

1-2

10.

Options

1-2

INSTALLATION

.2-1

Initial

Inspection.2-1

2-3.

Repackaging

for

Shipment

2-1

2-4.

Using

Original

Packaging

2-1

2-8.

Using

Other

Packaging

2-1

2-10.

Preparation

for

Use.2-1

2-11.

Installation.2-1

13.

Power

Requirements

....

2-1

III

OPERATION

.3-1

Introduction.3-1

3-3.

Panel

Features

.3-1

3-5.

Measurement

Procedures

3-1

3-7.

Operating

Information

....

3-1

3-8.

Polar

Display

Reflection

Coefficient

and

Phase

Angle

3-1

3-10.

High

Resolution

Display

Reflection

Coefficient

Meas¬

urements

.3-1

3-12.

Polar

Display

Return

Loss

3-3

3-15.

Polar

Display

Transmission

Measurements

.3-3

3-20.

Scattering

Parameters

Measure¬

ment

.3-4

3-22.

Polar

Display

Normalized

Impedance

and

Admittance

3-4

3-24.

Alternate

Smith

Chart

Over¬

lays

.3-5

3-29.

Marking

Frequency

the

Display

.3-5

3-31.

Display

Blanking

.3-5

3-33.

Increased

Accuracy

for

Reflec¬

tion

Measurements

Min¬

imizing

Directivity

Errors

3-5

3-36.

H26-8414A

Polar

Display

...

3-7

Section

Page

PERFORMANCE

TESTS

.4-1

4-1.

Introduction.4-1

4-4.

Equipment

Required

.4-1

4-6.

Test

Record

.4-1

4-8.

Accuracy

Test

.4-3

4-9.

Horizontal

and

Vertical

Output

Tests

.4-4

10.

Marker

and

Blanking

Input

Tests

4-4

ADJUSTMENT

PROCEDURES

...

5-1

Introduction.5-1

5-5.

Factory

Selected

Components

5-1

5-7.

Equipment

Required

.5-1

5-9.

Trace

Alignment

and

Vertical

Gain

Adjustment

.5-4

5-10.

Phase,

Recorder

Gain

and

Pattern

Shape

Adjustments

5-6

5-11.

Astigmatism

Adjustment

5-8

5-12.

Illumination

Adjustment

5-8

5-13.

Intensity

Adjustment.5-9

5-14.

Manual

Beam

Centering

Zero

Adjustment

.5-10

15.

Phase

Zero

Adjustment

....

5-12

REPLACEABLE

PARTS.6-1

Introduction.6-1

Ordering

Information.6-1

VII

MANUAL

CHANGES

.7-1

Introduction.7-1

VIII

SERVICE.8-1

Introduction.8-1

8-3.

Principles

Operation

....

8-1

8-5.

Troubleshooting

.8-1

8-7.

Recommended

Test

Equipment

8-1

8-9.

Repair..

8-1

8-10.

Part

Location

Aids

.8-1

8-12.

Circuit

Board

Repair

....

8-1

8-15.

Component

Replacement

8-1

8-17.

Transistor

Replacement

8-2

8-19.

Diode

Replacement.8-2

8-21.

Schematic

Diagrams

.8-3

Model

8414A

List

Illustrations

LIST

ILLUSTRATIONS

Figure

Title

Page

Figure

Title

Page

1-1.

Model

8414A

Polar

Display

....

1-0

8-6.

Conversion

Typical

Time-

8-8

3-1.

Model

8414A

Front

and

Rear

Panel

Amplitude

Graph

Polar

Graph

Features

3-2

8-7.

Polar

Vector

Test

Signal

....

8-8

3-2.

Return

Loss

Overlay

3-3

8-8.

Horizontal

and

Vertical

Vectors

Re-

3-3.

Typical

Smith

Chart

Display

Nor-

quired

Deflect

CRT

Beam

8-9

malized

Impedance

3-4

8-9.

Vector

Graph

Typical

Test

8-9

3-4.

Smith

Chart

Plot

Admittance

Signal

Point

3-5

8-10.

Simplified

Overall

Block

Diagram

8-9

3-5.

CRT

Overlays

3-6

8-11.

Test

Point

Locations

8-11

3-6.

Measured

Reflection

Coefficient

3-7

8-12.

Detailed

Block

Diagram.

8-11

3-7.

Locus

Measured

Reflection

when

8-13.

Phase

Shifter

and

Phase

Detectors,

Load

Moved

3-7

Component

Identification

....

8-13

3-8.

Locus

Measured

Reflection

with

8-14.

Phase

Shifter

and

Phase

Detectors,

Directivity

Cancelled

3-7

Schematic

Diagram

8-13

3-9.

Reflection

Coefficient

Measurement

3-8

8-15.

Low

Pass

Filters

and

Horizontal

and

3-10.

Transmission

Measurement

....

3-10

Vertical

Drivers,

Component

Iden-

3-11.

Typical

Polar

Displays

During

Initial

tification

8-15

Calibration

Adjustment.

3-11

8-16.

Low

Pass

Filters

and

Horizontal

and

3-12.

Model

8414A-H26

Polar

Display

and

Vertical

Drivers,

Schematic

Automatic

System

Interface

Block

3-12

Diagram

8-15

Diagram.

8-17.

Intensity

Modulator,

Component

4-1.

Performance

Test

Equipment

Setup

4-2

Identification

8-17

5-1.

Setup

for

Trace

Alignment

and

Vert-

8-18.

Intensity

Modulator,

Schematic

Di-

ical

Gain

Adjustment

5-5

agram

8-17

5-2.

Setup

for

Phase,

Recorder

Gain

and

8-19.

CRT

High

and

Low

Voltage

Supplies

Pattern

Shape

Adjustments

5-7

and

+150

Volt

Supply,

Component

5-3.

Setup

for

Manual

Beam

Centering

Identification

8-19

Zero

Adjustment

5-11

8-20.

CRT

High

and

Low

Voltage

Supplies

5-4.

Setup

for

Phase

Zero

Adjustment

5-13

and

+150

Volt

Supply,

Schematic

6-1.

Cabinet

Parts

6-11

Diagram

8-19

8-1.

Examples

Diode

and

Transistor

8-21.

Mainframe

Plug-In

Connector

Detail

Marking

Methods.

8-3

for

H26-8414A.

8-20

8-2.

General

Information

Schematic

8-22.

Mainframe

Plug-In

Connector

Detail

Diagrams

8-5

for

Standard

8414A

8-21

8-3.

Schematic

Diagram

Notes.

8-6

8-23.

Interconnection

Diagram

8-21

8-4.

Setup

for

Troubleshooting

....

8-7

8-24.

Location

Adjustments,

Chassis-

8-5.

Phase

and

Amplitude

Relationship

8-8

mounted

Parts

and

Major

Assem-

Typical

Reference

and

Test

Signals

blies.

8-23

LIST

TABLES

Table

Title

Page

Table

Title

Page

1-1.

Specifications

1-1

6-3.

Parts

List

Indexed

Part

Num-

4-1.

Recommended

Test

Equipment

4-1

ber

6-12

4-2.

Performance

Test

Record

....

4-5

6-4.

Code

List

Manufacturers

....

6-15

5-1.

Recommended

Test

Equipment

5-2

8-1.

Recommended

Test

Equipment

8-0

5-2.

Adjustment

Controls

and

Functions

5-3

8-2.

Printed

Circuit

Soldering

Equipment

8-2

6-1.

Reference

Designations

and

Abbrevi

8-3.

Ohmmeters

Used

for

Transistor

Test-

ations

6-1

ing

8-4

6-2.

Parts

List

Indexed

Reference

Des

8-4.

Out-of-Circuit

Transistor

Testing

8-5

ignation

6-2

8-5.

Intensity

Modulator

Voltage

Measurements

8-16

iii

Section

General

Information

Model

8414A

Model

8414A

Section

General

Information

SECTION

GENERAL

INFORMATION

1-1.

DESCRIPTION.

1-2.

The

Hewlett-Packard

Model

8414A

Polar

Dis¬

play

(Figure

1-1)

plug-in

display

unit

for

Hewlett-Packard

Model

8410A

and

Model

8407A

Network

Analyzers.

displays,

polar

form

five-inch

CRT,

the

relative

phase

and

magnitude

the

signals

applied

the

Network

Analyzer.

1-3.

The

CRT’s

internal

graticule

has

five

circular

magnitude

divisions

and

radial

ten-degree

phase

divisions.

Full

scale

magnitude

calibration

deter¬

mined

controls

the

Network

Analyzer.

The

internal

graticule,

augmented

set

snap-on

overlays,

allows

the

display

read

directly

reflection

coefficient,

impedance

return

loss

for

maximum

convenience

viewing

and

photo¬

graphing

displays.

additional

convenience

for

photographing

displays

provided

panel-

controlled,

internal

graticule

illumination

elimi¬

nating

the

need

for

ultraviolet

light

source

the

camera.

beam

centering

pushbutton,

con¬

junction

with

continuous

action

positioning

con¬

trols,

permits

easy

initial

calibration

and

accuracy¬

improving

offset

adjustments.

Rear-panel

blanking

and

marker

inputs

externally-generated

signals

for

between

sweep

display

blanking

and

for

frequency

marking

beam

brightening.

The

hori¬

zontal

and

vertical

components

the

polar

display

are

available

separate

rear-panel

outputs

for

driv¬

ing

external

displays

such

X-Y

graphic

recorders.

The

polar

display

fully

transistorized,

except

for

the

CRT,

and

powered

the

Network

Analyzer

mainframe.

Complete

specifications

are

given

Table

1-1.

Table

1-1.

Specifications

Range:

Normalized

polar

coordinate

display;

magnitude

calibration

percent

full

scale

per

division.

Scale

factor

function

gain

setting

Network

Analyzer.

Max¬

imum

scale

factor

10,

minimum

0.0316.

Phase

calibrated

ten-degree

increments

over

360-degree

range.

Accuracy:

Error

circle

CRT

less

than

radius.

Output:

Two

outputs

provide

horizontal

and

vertical

components

polar

quantity.

For

full

scale

deflection

output

nominally

±2.5

volts,

source

impedance

less

than

100

ohms,

minimum

bandwidth

dB)

kHz.

Drift:

CRT,

<±0.2

mm/°C;

auxiliary

outputs,

<±10

mV/°C.

Beam

Center:

Pressing

BEAM

CTR

pushbutton

simulates

zero

signal

input

test

channel

and

allows

convenient

beam

position

adjust¬

ment

for

reference.

CRT:

Five-inch,

5-kV

post

accelerator

tube

with

P-2

phosphor

and

internal

polar

graticule.

Marker

Input

(rear

panel):

Accepts

frequency

marker

output

pulse

from

8690-series

690-series

Sweep

Oscillators,

-5

volts

peak.

Trace

brightened

for

duration

marker

pulse.

Blanking

Input

(rear

panel):

Accepts

-4

volt

blanking

pulse

from

8690-series

and

690-series

Sweep

Oscillators

blank

re¬

trace

during

sweep

operation.

Background

Illumination:

Controls

intensity

CRT

background

illumination

for

photog¬

raphy.

Eliminates

need

for

ultraviolet

light

source

oscilloscope

camera

when

photo¬

graphing

internal

graticule.

Power:

Additional

watts

supplied

Net¬

work

Analyzer.

Weight:

Net,

(4,9

kg).

Dimensions:

in.

high,

15-9/16

in.

deep,

7-9/32

in.

wide

(15,2

39,

18,

cm),

exclud¬

ing

front

panel

knobs.

1-1

Section

General

Information

Model

8414A

1-4.

EQUIPMENT

SUPPLIED.

1-5.

The

Polar

Display

has

chart

overlays

provided

accessories,

Smith

Chart

and

four

return

loss

overlays.

These

overlays

are

plastic

sheets

that

snap

onto

the

face

the

CRT.

Three

different

Smith

Chart

scale

factors

are

used

and

four

different

styles

each

scale

are

supplied

for

different

applications

(refer

Figure

3-5).

1-6.

INSTRUMENTS

COVERED

MANUAL

1-7.

This

instrument

has

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

unique

each

instrument.

The

contents

this

manual

apply

directly

in¬

struments

having

the

same

serial

number

prefix(es)

listed

under

SERIAL

NUMBERS

the

title

page.

1-8.

instrument

manufactured

after

the

print¬

ing

this

manual

may

have

serial

prefix

that

not

listed

the

title

page.

This

unlisted

serial

pre¬

fix

indicates

that

the

instrument

different

from

those

documented

this

manual.

The

manual

for

this

instrument

supplied

with

yellow

Manual

Changes

supplement

that

contains

“change

inform¬

ation”

that

documents

the

differences.

1-9.

For

information

concerning

serial

number

prefix

not

listed

the

title

page

the

Manual

Changes

supplement,

contact

your

nearest

Hewlett-

Packard

office.

1-10.

OPTION

1-11.

The

Option

H26

modification

the

stand¬

ard

8414A

Polar

Display

allows

computerized

control

magnitude

and

phase

data

the

8542A

series

Automatic

Network

Analyzer

systems.

See

Figure

3-12

for

further

information.

1-2

Model

8414A

Section

General

Information

SAFETY

CONSIDERATIONS

GENERAL

This

product

and

documentation

must

reviewed

for

familiarization

with

safety

markings

and

instructions

before

operation.

This

product

has

been

designed

and

tested

accordance

with

inter¬

national

standards.

SAFETY

SYMBOLS

SAFETY

EARTH

GROUND

This

Safety

Class

product

(provided

with

protective

earthing

terminal).

uninterruptible

safety

earth

ground

must

provided

from

the

main

power

source

the

product

input

wiring

ter¬

minals,

power

cord,

supplied

power

cord

set.

Whenever

likely

that

the

protection

has

been

impaired,

the

product

must

made

inoperative

and

secured

against

any

unintended

operation.

Instruction

manual

symbol:

the

product

will

marked

with

this

symbol

when

necessary

for

the

user

refer

the

instruc¬

tion

manual

(refer

Table

Contents).

Indicates

hazardous

voltages.

Indicates

earth

(ground)

terminal.

BEFORE

APPLYING

POWER

Verify

that

the

product

configured

match

the

available

main

power

source

per

the

input

power

configuration

instructions

provided

this

manual.

this

product

energized

via

autotrans¬

former

make

sure

the

common

terminal

con¬

nected

the

neutral

(grounded

side

mains

supply).

WARNING

CAUTION

The

WARNING

sign

denotes

hazard.

calls

attention

procedure,

practice,

the

like,

which,

not

correctly

performed

adhered

to,

could

result

personal

injury.

not

proceed

beyond

WARNING

sign

until

the

indicated

conditions

are

fully

understood

and

met.

The

CAUTION

sign

denotes

hazard.

calls

attention

operating

procedure,

practice,

the

like,

which,

not

correctly

performed

adhered

to,

could

result

damage

destruc¬

tion

part

all

the

product.

not

proceed

beyond

CAU¬

TION

sign

until

the

indicated

conditions

are

fully

understood

and

met.

SERVICING

WARNING

Any

servicing,

adjustment,

maintenance,

repair

this

product

must

per¬

formed

only

qualified

personnel.

Adjustments

described

this

manual

may

performed

with

power

supplied

the

product

while

protective

covers

are

removed.

Energy

available

many

points

may,

contacted,

result

per¬

sonal

injury.

Capacitors

inside

this

product

may

still

charged

even

when

disconnected

from

its

power

source.

avoid

fire

hazard,

only

fuses

with

the

required

current

rating

and

the

specified

type

(normal

blow,

time

delay,

etc.)

are

used

for

replacement.

1-3/1-4

Model

8414A

Section

Installation

SECTION

INSTALLATION

2-1.

INITIAL

INSPECTION.

2-2.

Inspect

the

instrument

for

shipping

damage

soon

unpacked.

Check

for

broken

knobs

and

connectors;

inspect

cabinet

and

panel

surfaces

for

dents

and

scratches.

Check

electrical

perform¬

ance

using

procedures

Section

IV.

the

instru¬

ment

damaged

any

way,

fails

operate

properly,

notify

the

carrier

and

your

nearest

Hewlett-Packard

Sales

and

Service

Office.

the

event

mechanical

damage,

the

packing

material

and

carton

should

held

for

carrier’s

inspection.

For

assistance

any

kind,

including

instruments

under

warranty,

contact

the

nearest

Hewlett-

Packard

Sales

Office.

2-3.

REPACKAGING

FOR

SHIPMENT.

2-4.

Using

Original

Packaging.

2-5.

The

same

type

containers

and

materials

used

factory

packaging

can

obtained

through

any

Hewlett-Packard

office.

2-6.

the

Model

8414A

being

returned

Hewlett-Packard

for

servicing,

attach

tag

indi¬

cating

the

type

service

required,

return

address,

model

number

and

full

serial

number.

Also,

mark

the

container

FRAGILE

assure

careful

handling.

2-7.

any

correspondence

refer

the

instru¬

ment

model

number

and

full

serial

number.

2-8.

Using

Other

Packaging.

2-9.

The

following

general

instructions

should

used

when

repackaging

with

commercially-available

materials:

Wrap

the

8414A

heavy

paper

plastic.

(If

shipping

Hewlett-Packard

serivce

office

center,

attach

tag

indicating

the

type

service

required,

the

return

address,

model

number

and

full

serial

number.)

Use

strong

shipping

container.

double¬

wall

carton

made

350

pound

test

material

adequate.

Use

enough

shock-absorbing

material

(three

four

inch

layer)

around

all

sides

the

instrument

provide

firm

cushion

and

prevent

movement

inside

the

container.

Protect

the

control

panel

with

cardboard.

Seal

the

shipping

container

securely,

and

mark

FRAGILE

assure

careful

handling.

any

correspondence

refer

the

instru¬

ment

model

number

and

full

serial

number.

2-10.

PREPARATION

FOR

USE.

2-11.

Installation.

2-12.

Instructions

for

installing

the

Polar

Display

the

Network

Analyzer

mainframe

are

the

Net¬

work

Analyzer

Operating

and

Service

manual.

2-13.

Power

Requirements.

2-14.

The

Polar

Display

obtains

power

from

the

Network

Analyzer

mainframe

through

the

rear

connector,

when

properly

installed.

2-1

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