HP 4262A Service-Handbuch

Errata

Title & Document Type:

Manual Part Number:

Revision Date:

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4262A LCR Meter Operating and Service Manual

04262-90007

October 1983

WP

4262A

OPERATING

AND

SERVICE

MANUAL

4262A

DIGITAL

LCR

METER

49621‘«

LCR

A

5

TeATxAmy

1G58

a0

o6

AN

USTTY

(ALe

BLMCIT

1CEAL

@o@%

aJc)

@“%@

o

@u@a

@iﬁ

oo8

um

mwvm

@/ﬂ

HEWLETT

PACKARD

LATAR

)

MANUAL

CHANGES

‘

——

MANUAL

IDENTIFICATION

——

4262A

:

Model

Number:

4262A

Date

Printed:

OCT.

1983

DIGITAL

LCR

METER

Part

Number:

04262-90007

"

This

supplement

contains

important

information

for

correcting

manual

errors

and

for

adapting

the

manual

to

instruments

containing

improvements

made

after

the

printing

of

the

manual.

To

use

this

supplement:

[

Make

all

ERRATA

corrections.

Make

all

appropriate

serial

number

indicated

in

the

tables

below.

SERIAL

PREFIX

OR

NUMBER

MAKE

MANUAL

CHANGES

SERIAL

PREFIX

OR

NUMBER

MAKE

N!ANUAL

CHANGES

A11

1

>

NEW

ITEM

‘

ERRATA

Page

2-8,

Table

2-1:

Add

the

following

item

to

the

option

101

(HP-IB)

components.

PN

2190-0577

2ea.

Spring

Washer

Page

3-22,

Figure

3-9:

Delete

the

following

sentence

from

beneath

the

table

in

step

3:

"*Bias

current

when

+40V

is

applied

to

DC

BIAS

connector."

NOTE

Manual

change

supplements

are

revised

as

often

as

necessary

to

keep

manuals

as

current

and

accurate

as

possible.

Hewlett-Packard

recommends

that

you

periodically

request

the

latest

edition

of

this

supplement.

Free

copies

are

available

from

ail

HP

offices.

When

requesting

copies

quote

the

manual

identification

information

from

your

supplement,

or

the

model

number

and

print

date

from

the

title

page

of

the

manual.

‘

Date/Div:

sep.

19,

1984/33

(ﬁ

HEWLETT

Page

1

of4

Y8

pAcKARD

Printed

in

Japan

»

Page

4-24,

Figure

4-9:

.

)

Correct

the

TTL

outputs

table

in

Figure

4-9

as

follows:

Comparison

|

TTL

output

pins*

LCR

19

20

45

WiGH

|

i

0.C.

LOW

w

|

LOW LOW

0.C.

LOW

j_

_____

LOW

0.C.

LOW

DQ

o

15

16

41

HIGH

0.C.

LOW

N

|

LOW

0.C.

oW

|

LOW

0.C.

LOW

*

TTL

low-level

output

is

indicated

as

LOW,

and

open-collector

turn-off

state

is

indicated

as

0.C.

»

Page

8-47,

Figure

8-29:

Change

the

part

number

for

the

power

transformer

to

9100-0865.

Page

8-53,

Figure

8-39,

Correct

the

flow

diagram

as

shown

below:

PROCEDURE:

1

START

————»

Set

4262A

controls

as

follows:

FUNCTION.

...

..........

C

CIRCUIT

MODE.

...

PRL

LCR

RANGE

.

.......

AUTO

TRIGGER.

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

INT

Unknown

.......

Open(0pF)

Observe

waveforms

at

A14TP5

and

TP4.

Do

they

have

precisely

the

same

phase

as

each

other

for

all

test

frequencies

(120,

1k

and

10kHz)?

See

photo

below.

A14TP4

Al4TP5

NO

()

Q19

Gate

Q22

Gate

Monitor

signals

at

A14Q19

and

Q22

Gates.

Do

they

look

like

this?

5V/div

YES

Monitor

signal

at

A14Q6

Collector.

@

Is

the

waveform

as

illustrated?

Does

the signal

frequency

satisfy

the

table

below?

Is

signal

at

A14TP4

a

squarewave?

NO

I

YES

~

/

\

/

Is

signal

at

A14U9

3

.5Vp-p

pulse?

1

-

NO

!

Check

A14Q8.

\

~

~—

—

YE§'

,

Is

potential

difference

be-

tween

A14Q7

Base

and

Emitter

0.6Vdc?

NC

Check

A14Q7.

YES

Check

A14U9.

Check

Result

A14Q24

Can

a

pulsed

waveform

be

observed

at

A14U8

11?

Is

dc

level

at

A14Q21

(Q24)

Emitter

3V?

éll‘?Q?

Is

amplitude

of

the

pulse

NO

Does

4Vp-p

square

pulse

NO

ollector

at

A14Q6

Collector

15Vp-p?

appear

at

A14U13

pin6?

[~

TEST

SIGNAL

Frequency

/,—YES\\

-

YES\

120Hz 120Hz

(8.3ms)

,

4

~ N

i

~

N

1kHz

(1ms)

"

=

Monitor

signal

at

A14Q6

10kHz

1kHz

(1ms)

Base.

Is

tﬁ'e’

pulse

with.h

1

!

R‘l’jsu‘gvl‘?'i’

E,“‘s"

appear

at

{NO

YES

A

10us?

\

§?

]

\

A

\

[YES

NO/

\

YES

/

N

~

7/

N

7/

J

~

e

-

+ ~

-

_

-

e

Go

to

PROCEDURE

2

NO

Check

A14U13.

Check

A14US.

g;‘fgk

Al4Q6

and

CHANGE

1

»

Page

1-10,

Table

1-4:

Change

the

recommended

oscilloscope

to

the

HP

1740A.

Table

6-3:

Change

the

table

as

shown

below:

Reference

HP

Part

Description

Designation

Number

A14

Q4

1855-0570

TRANSISTOR

J-FET

N-CHAN

SI

RS

(ZERO

ADJ

L)

2100-4086

RESISTOR-VAR

500 10%

66

04262-24004

NUT-HEX-DBL-CHAM

1/4-32-THD

68

2190-0016

WASHER-LK

INTL

T

NO.-3/8

Page

6-25:

Add

a

washer

(reference

designation

(&)

to

the

illustration,

as

shown

below:

|

(’5,”

HEWLETT

PACKARD

OPERATING

AND

SERVICE

MANUAL

MODEL

4262A

LCR

METER

(including

Options

001,004,

010,

and

101)

SERIAL

NUMBERS

This

manual

applies

directly

to

instruments

with

serial

numbers

prefixed

2022J

With

changes

described

in

Section

VI,

this

manual

also

applies

to

instruments

with

serial

numbers

prefixed

1710J,

and

1739J.

For

additional

important

information

about

serial

numbers,

see

INSTRUMENTS

COVERED

BY

MAN-

UAL

in

Section

|.

©

COPYRIGHT:

YOKOGAWA-HEWLETT-PACKARD,

LTD.,1977

9-1,

TAKAKURA-CHO,

HACHIOJI-SHI,

TOKYO,

JAPAN

Manual

Part

No.

04262-90007

_

Microfiche

Part

No.

04262-90057

Printed:

0CT.

1983

Table

of

Contents

Model

4262A

TABLE

OF

CONTENTS

Section

Title

Page

Section

Title

Page

I

GENERAL

INFORMATION.........ccc0utn

1-1

3-30.

Terminal

Configuration

...........

3-10

1-1.

Introduction..........ccivevevnnns

11

3-32.

Offset

Adjustment

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

3-10

1-4,

Description

.....covvviiiiiiennns

1-1

3-40.

Option

Operation

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

3-27

1-8,

Specifications

.....o0ovevenieeennns

1-7

3-42,

Option

001:

BCD

Parallel

Data

1-10.

Safety

Considerations

.........

1-7

Output

...covvieviiieiinnianen,

3-27

1-13.

Instruments

Covered

by

Manual

1-7

3-44.

Output

Data

and

1-18.

Options

..

.veereereennnerannss

1-8

Assignment.........0000nn

3-27

1-20.

Option

001

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

1-8

3-46.

Alternate

Output

of

LCR

and

.

1-22.

Option

004

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

1-8

D/QData....c.ovvunneeenns

3-27

1-24,

Option

101

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

1-8

3-47,

Output

Timing.......o00ven..

3-27

1-26.

Option

010

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

1-8

3-49.

Option

004-COMPARATOR

.......

3-30

1-28.

Other

Options...........

1-8

3-51.

Front

Panel

Features

1-31,

Accessories

Supplied

......c0uen..

1-8

(Figure

3-42)

...cvvvvvvenns

3-30

1-33.

Equipment

Available

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

1-8

3-52.

LIMIT

Setting

Warning

.......

3-31

I

INSTALLATION

.eouvenenneeinnnnnnennns

2-1

3-53.

OUTPUT

Connector

Decision

|

2-1

Introduction

........evvveeeennnns

2-1

[

OWPUL

-

seeeeeeineneeeann

-

2-3.

Initial

Inspection........eevvenenns

2-1

g-gg

Option

101:

HP-IB

.........co.

...

3_33

2-5

Preparation

for

Use

..........0uus

2-1

oo’

Connection

to

HP-IB

Controller

3-3

2-6

Power

Requirements..........

2-1

g'gz

EgéIfLStsﬁflts

;ndlcator

""""

g'gg

. ;

-64.

itech

vovviienennnn.

-

28

Line

Vollage

and

Fuse

Selection

2

3-65.

HP-IB

Interface

Capabilities

..

3-32

2-14:

Interconnectic;n.s'

.

.........

2-3

3-66.

S(;;lrrfgsﬁzﬁ

é(:si{efto;}n

3_39

2-16.

Operating’

Environment........

2-3

3-67

Talier

Cap(;bilit

’

T5

e

3-39

2-19,

Installation

Instructions

.......

2-3

368,

Functions

Relate‘(’i'to

o

2-21,

Installation

of

Options

)

Talker

Capabilit

3-33

907,

908

and

909

......

2-3

sarker

Lapaplily

...

..

2-23.

Storage

and

Shiﬁment

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

2-3

3-69.

Listener

Capability:

L4

.

3-33

9-24.

Environment

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

2-3

3-70.

Service

Request

2-26.

PACKAgING

+vvvvvverenronnnns

2-3

371

Capability:

SR

.......

3-33

2-29.

Option

IStallation

...

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

2-6

-1,

R‘émtg./llft“,aém

336

2-31,

Option

001

BCD

Data

Output

372

Do

e

-

TNSEAllAtion

«.eeeennnnnenes..

2-6

-12.

‘é‘;’;f:bﬁif;_rDcl

536

a3

O

stallation

1

.

2-6

3-13.

Device

Trigge”

|

336

2-33.

Coupling

Option

004

Comparator

374,

ADDRESS

Switch

..

..r..10..

3.36

giggpﬁgga?&tilgflj

Data

9.6

3-75,

Remote

Message

Coding......

3-36

2-34.

Option

101

HP-IB

Remote

Control

and

Data

Output

Installation.

.. 2-6

1V

ERFOURCRCRIRST

oo

40

4-3.

Equipment

Required

.....e0e0uvuns

4-1

4-5.

TestRecord

.....covevesenasanaes

4-1

II

OPERATION

.......cuveiennnnenenennnnns

3-1

4-7.

Calibration

Cycle.................

4-1

3-1.

INtroduction............ceeeesne..

3-1

——

Preliminary

Qperations

...........

4-2

3-3.

Panel

Features.........couvueunes

3-1

——

Calibration

of

DUT's..............

4-4

3.5

Self

Test

(Basic

Operating

Check)

..

3-1

4-9,

Measu_rement

Frequency

Test......

4-17

3-7.

Test

Signals

....ovvveererennnnnns

3-6

4-10.

Capacitance

Accuracy

Test

........

4-8

3-9.

Measurement

Range

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

3-6

4-11.

Resistance/ESR

Accuracy

Test....

4-12

3-11.

Initial

Display

Test

«.eeuvervenn...

3-17

4-12.

Dissipation

Factor

Confirmation

Check

.

4-14

3-13.

Initial

Control

Settings

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

3-1

4-13,

Inductance

Accuracy

Test

........

4-117

3-15.

D/Q

Measurement

............o...

3.7

4-14.

Internal

DC

Bias

Source

Test

.....

4-19

3-17.

LCR

Measurement

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

3.7

4-15.,

Offset

Adjustment

Test..oevvuinnn

4-20

3-19.

D/Q

Blanking

Function

(Switch

4-16,

Comparator

Test

(Option

004

Only)

4-22

selectable

function

inside

cabinet).

3-9

4-17.

HP-IB

Interface

Test

3-21,

General

Component

Measurement

..

3-9

(Option

101

Only)

..eeuennnnnnnn.

4-25

3-23.

Semiconductor

Device

Measurement

3-9

3-25.

External

DCBias........c.c.c.une

3-9

3-28.

External

Triggering

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

3-9

ii

Model

4262A

TABLE

OF

CONTENTS

Section

Title

Page

V

ADJUSTMENT

..........

Cesseretreannaas

5-1

5-1.

Introduction...........oveueuennnn.

5-1

5-3.

Safety

Requirements

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

5-1

5-7.

Equipment

Required

........00v...

5-1

5-9,

Factory

Selected

Components

......

5-1

5-12.

Adjustment

Relationships..........

5-1

5-14,

Adjustment

Locations

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

5-1

5-16.

DUT

Adjustment

Recommendations

.

5-4

5-1

Initial

Operating

Procedure........

5-5

5-20.

DC

Power

Supply

Adjustment,......

5-6

5-21.

Nanoprocessor

Operating

Power

Voltage

Adjustment..............

5-7

5-22.

Al2

Board

Offset

Adjustment.......

5-8

5-23.

Al3

Board

Offset

Adjustment,......

5-9

5-24.

Al4

Phase

Detector

&

Integrator

Adjustment

........c0iiiinnnn.

5-14

5-25.

10kHz

Measurement

Accuracy

Adjustment

......ciivviiennnnns

5-17

5-26.

C

Zero

ADJ

Circuit

Adjustment

(AL2)

L.ttt

i

et

5-22

VI

REPLACEABLE

PARTS

...cvvvnivienennss

6-1

6-1.,

Introduction.......eeovvvennnn

eees

B-1

6-3.

Abbreviations

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

cerrras

6-1

6-5.

Replaceable

Parts

List............

6-1

6-7.

Ordering

Information

.........

eees

6-2

6-12.

Direct

Mail

Order

System

.........

6-2

VII

MANUAL

CHANGES

..

..0iitvitverenennnn

7-1

7-1.

Introduction..........ccvvvvueenn.

7-1

7-3.

Manual

Changes

......covvveevnnren

7-1

VIISERVICE

.....vtiiiteiiiinsenecenconnnens

8-1

8-1.

Introduction.........ceeoeeeenevenn

8-1

8-3.

Theory

of

Operation

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

8-1

8-5.

Troubleshooting

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

creeas

8-1

8-7.

Recommended

Test

Equipment

.....

8-1

8-9

Repair..civieeereninrannnns

cesese

8-1

Section

8-11,

8-21,

8-22.

8-23.

Table

of

Contents

Title

Page

Basic

Theory

....vevvveeenecnnnas

8-2

Principles

of

Operation

,..........

8-4

Block

Diagram

Discussion.........

8-8

Analog

Section

Discussion

....,

8-8

All

Oscillator

and

Source

Resistor

.......

8-8

Al2

Range

Resistor......

8-8

Al3

Process

Amplifier.,.,

8-8

Al4

Phase

Detector

and

Integrator.............

8-8

Digital

Control

Section

.......

8-10

A23

Processor

and

ROM

8-10

A21

Keyboard

Control

..

8-11

A22

Display

Control

&RAM

.......ccuvt..

8-11

A2

Display

and

Keyboard

8-11

Timing

Diagram

Discussion.......

8-12

Options...vvverevennnnne

cesesenn

8-14

Option

001

BCD

Data

Output

(A35)

......

ceeiaesens

8-14

Option

004

Comparator

(A4,

A5

&

A24).............

8-15

Option

101

HP-IB

Compatible

(A25)..........

.

8-15

Troubleshooting

........c0vvveve.

8-16

Repair....ovvviieiiiennncennnasns

8-26

Removal

of

Q2

and

Q3

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

8-26

Line

Switch

(S1)

Removal.........

8-26

Protective

Diode

Replacement

(CR4,

CR5,

CR6

and

CRT)......

.

8-27

ZERO

ADJ

Control

Potentiometer

(R4

and

R5)

Replacement........

8-217

A2

Keyboard

and

Display

Board

Disassembly.............

8-27

Keyboard

Switch

LED

Replacement

8-28

Product

Safety

Checks............

8-29

iii

List

of

Tables

List

of

Ilustrations

LIST

OF

TABLES

Number

Title

Page

1-1

Specifications

....vvevvrvernncenns

1-2

General

Information,..............

1-6

1-3.

Equipment

Available

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

1-9

1-4

Recommended

Test

Equipment

....

1-10

2-1,

Option

Components

.........c.....

2-8

3-1

Test

Signal

Level....cvieeeeeeennn

3-6

3-2

Measurement

Ranges.......o.v0...

3-6

3-3.

Annunciation

Display

Meanings....

3-12

3-4.

Unusual

Operating

Indications.....

3-21

3-60.

Remote

Program

Codes

..........

3-32

3-61,

Remote

Message

Coding.,........

3-33

4-1.,

Recommended

Components

for

Accuracy

Checks

......c0uvee

4-6

Number

Title

Page

1-1,

Model

4262A

and

Accessories......

1-1

1-2,

Serial

Number

Plate

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

1-7

2-1

Voltage

and

Fuse

Selection,........

2-2

Power

Cable

.......ocviiiiiinenn.

2-4

2-3

Rack

Mount

Kit...................

2-5

2-4

Option

Installation

Hlustrations.....

2-7

3-1

Front

Panel

Features

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

3-2

Rear

Panel

Features..............

3-4

3-3

Test

Fixture

and

Leads............

3-8

3-4

Measurement

Error

due

to

Misadjusted

ZERO

ADJ

controls

..

3-10

3-5.

Conversion

between

Parallel

and

Series

Equivalents

...........

3-6.

Relationship

of

Dissipation

to

Series

and

Parallel

Resistance....3-13

-40,

Assignments

of

Qutput

Connector

and

Output

Format.....

External

DC

Bias

Circuits......

3-7.

General

Component

Measurements.

.,

3-15

3-8.

Semiconductor

Device

Measurement

3-18

3-9

...3-20

3-4

3-28

3-41.

Timing

Chart

of

BCD

Data

Output...3-29

3-42.

Front

Panel

Features

..........

3-43.

Option

004:

COMPARATOR

.....

3-44.

Location

of

Comparator

Data

Qutput

...

.vevvenennnens

iv

4-1

Measurement

Frequency

Test

Setup.,

4-7

4-2.

Capacitance

Accuracy

Test

Setup...

4-8

4-3

Resistance

Accuracy

Test

Setup....4-12

Model

4262A

Title

Page

Adjustable

Components............

5-2

,

Factory

Selected

Components

......

5-3

DUT's

Recommended

for

Making

Adjustments

........

..

5-4

Adjustment

Requirements..........

5-5

List

of

Reference

Designators

and

Abbreviations.............

6-1

Manufacturers

Code

List

..........

6-2

Replaceable

Parts

....ovvvvenennns

6-3

Option

010

Modifieation

.........

e

6-24

Manual

Changes

by

Serial

Number..

7-1

Summary

of

Changes

by

Assembly..

7-1

Currently

Available

Options

......

8-14

Symptoms

Likely

to

Mislead

......

8-18

Front

Panel

Symptoms

of

Internal

Control

Misadjustment

.......

8-19

Front

Panel

Isolation

Procedure

..

8-20

Title

Page

Dissipation

Factor

Confirmation

Check

SetUpPS:

«eeersnnenes

e

ereeeasaan

4-14

Inductance

Accuracy

Test

Setup

...

4-17

Internal

DC

Bias

Source

Test

SetUpP.vviierteenrencsrnnens

4-19

Offset

Adjustment

Test

Setup......

4-20

Comparator

Test

Setups..........

4-22

Comparator

Output

(J6)

data

format

4-24

HP-IB

Interface

Test

Setup

.......

4-25

SRQ

Service

Routing

.....

cresenas

4-29

Power

Supply

Voltage

Adjustment...

5-6

Nanoprocessor

Operating

Power

Voltage

Adjustment

Location

.....

5-7

Al2

Board

Offset

Adjustment

......

5-8

Waveform

at

A12Q11

Source

.......

5-9

Al3

Board

Offset

Adjustment.......

5-9

Waveform

at

A13TP1

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

5-10

Waveform

at

A13TP2

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

5-11

Waveform

at

A13TP3

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

5-12

Ald

Phase

Detector

&

Integrator

Adjustment

......ciiiienanian.

5-13

A228S1

Switch

Setting

.

....v.ue....

5-14

Zero

Detector

&

APAO

Adjustments

5-15

10kHz

Measurement

Accuracy

Adjustment

..

...iiiieiieneeenn

5-17

Offset

Adjustment

Setup

..........

5-22

Major

Mechanical

Parts

-

Exploded

View

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

6-23

Mechanical

Parts

-

Exploded

View

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

6-25

HP 4262A Service-Handbuch

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