Agilent 4285A Getting Started Guide

Agilent 4285A

Precision

LCR

Meter

Getting

SERIAL

This

3009J

NUMBERS

manual

.

applies

Started Guide

directly

to

instruments

with serial

number prex

Agilent Part No. 04285-90011

Printed in JAPAN March 2001

Fourth Edition

Notice

The

information

without

This

notice

document

copyright.

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the

prior

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.

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language

.

change

protected by

be

without

Agilent

T

echnologies

Component

1-3-2,

Murotani,

Hyogo

,

651-2241

T

est

Japan, Ltd.

PGU-Kobe

Nishi-ku,

Japan

Kobe-shi,

c



Manual

History

Printing

The

manual printing

edition.

(Minor

not

The printing

corrections

cause the

extensive

June

1990

date and

date changes

and

updates which

date to

change.)

technical changes

:

::

:

part number

when a

are incorporated

The manual

are incorporated.

:

First

Edition

indicate its

new edition

part number

(part

number:

current

is printed.

at reprint

changes

04285-90001)

do

when

December

March

2000

2001

1996

:

::

:

::

:

::

:

Second

:

::

:

F

Third

ourth

Edition

(part

number:

04285-90011)

iii

Safety

Summary

The

following general

phases

comply

in

In

intended

The

failure

of operation,

with

this manual

addition it

use of

Agilent

to

comply

safety precautions

service,

these

precautions or

may impair

violates safety

the instrument.

Technologies

with these

and repair

with specic

the protection

standards of

assumes no

requirements.

must be

of this

observed during

instrument. F

WARNINGS

provided by

design, manufacture

liability for

the

all

ailure to

elsewhere

the equipment.

,and

customer's

DO

NOT

Explosive

Keep

DO

A

way

NOT

Note

Ground

Instrument

Operate

In

Atmosphere

From

Circuits

Service

A

djust

Alone

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An

Live

Or

4285A

DEGREE

LEDs

CLASS

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be

with

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this

1

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electric

connected

operate

Operation

constitutes

Operating

personnel must

replacement

maintenance

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connected.

exist

even

with

disconnect

Do

not

attempt

capable

of

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with

in

IEC1010-1.

product

PRODUCT

shock

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instrument

of

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denite

and internal

personnel.

Under

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INST

4285A

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safety

.

any

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rst

ALLA

TION

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INDOOR

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earth

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hazard.

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not

replace

conditions

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removed.

circuits

adjustment unless

aid and

resuscitation, is

CA

TEGORY

USE

II

product.

accordance with

instrument

ground

presence

instrument

must

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in

be

chassis

the

of

ammable

such

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o

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and

POLLUTION

IEC825-1.

and

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supplied

power

gasses

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environment

.

Component

by

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another person,

present.

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DO

NOT

Parts

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Or Modify

Instrument

Dangerous Procedure

Warnings

Warning

iv

Because

install

instrument. Return

of

the

substitute

danger

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of

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or

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Agilent

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Sales

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and

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maintained.

Warnings

procedures throughout this manual. Instructions contained

, such as

the example below

, precede potentially dangerous

in the

warnings must be followed.

Dangerous voltages, capable of causing death, are present in this

instrument. Use extreme caution when handling, testing, and

adjusting this instrument.

Safety Symbols

General

are

listed below

denitions

.

of

safety symbols

used on

equipment or

in manuals

Instruction

with

this symbol

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Alternating

Direct

On

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In position

Out

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include

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to

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procedure

if

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in

damage

manual symbol:

to the

instruction manual.

current.

of push-button

(or chassis)

(chassis)

all

exposed

arning

correctly performed

or

death

correctly

to

product.

when it

of

push-button

terminal.

of

the

metal

sign

denotes a

practice,

to

sign

denotes

,

practice

performed

or

destruction

the product

is necessary

switch.

A

equipment

structures

condition or

or adhered

personnel.

a

hazard.

,

condition

or

of

connection

which

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hazard. It

the like

It

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part

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is marked

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normally

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Note

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highlight.

containing

procedures

damage

,

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static

to

component.

It

calls

sensitive

prevent

or

the

devices

v

4285A

LCR

Precision

Meter

Documentation

Map

The

documentation for

manuals

purpose

.F

ollowing is

.

The

system

basic

the 4285A

a brief

4285A Getting

setup

and

measurements

has been

description of

Started Guide

initial

power-up

and

explains

separated into

each manual

walks

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shows

you

how

commonly

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and its

through

to

make

used

features

.

The

4285A

04285-90020)

GPIB

OPERA

provides

programming

TION

MANU

general

information,

AL

(Agilent

information,

and

in

depth

P

art Number

specications

reference

information.

The

4285A

MAINTENANCE

MANU

AL

(Agilent

P

art

Number 04285-90030) explains how to verify conformance

to published specications

.

,

The

4285A SERVICE MANUAL

(Agilent Part Number

04285-90031) explains how to adjust, troubleshoot, and

repair the instrument. (Furnished Option 915 only.)

vi

Typeface

Conventions

Bold

Italics

Boldface type

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or example:

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HARDKEYS

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During

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components

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at its option, either repair

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For warranty service or repair

service facility designated by Agilent T

shipping charges to Agilent T

shall pay shipping charges to return the product to Buyer

Buyer shall pay all shipping charges

, this product must be returned to a

echnologies. Buyer shall prepay

echnologies and Agilent T

echnologies

. However

,duties

, and taxes for products

,

returned to Agilent Technologies from another country.

Agilent Technologies warrants that its software and rmware

designated by Agilent Technologies for use with an instrument will

execute its programming instruction when property installed on that

instrument. Agilent Technologies does not warrant that the operation

vii

Limitation

W

arranty

Exclusive

Remedies

of

the instrument,

error

free.

The

foregoing

improper

software

operation

or

improper

No

other

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outside

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specically

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remedies

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Agilent

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back of

this

Sales

manual.

viii

Contents

1.

Before

Initial

Preparation for

Power

Line V

Setting Up

System

Equipment

Installing

Interconnecting

Setting

Equipment

Interconnecting

Connecting

Equipment

Interconnecting

2.

Getting

Front P

LCD P

MENU keys

CURSOR and

ENTRY Keys

GPIB

4

TRIGGER

Memory

4

DC-BIAS

Contrast Control

Front P

Y

ou

Begin

Considerations

Use

Requirements

oltage

anel

Status

anel Operation ...... ..... .....

and

oltage

Fuse

Selection .

the High

.

the

Up

the

4285A,

A

cquainted

Description

and

Indicator

5

Key

Card

5

Key

.

Required

CURSOR Keys

..

Slot

.

Fuse

Selection

Current

.

T

est

Fixture

the

Units

Precision

the

Units

42841A,

Cables

with

Softkey

Display

.

and

.

Knob

.

Selection

.

..

.

DC

..

.

Q

Measurement

.

and

.

..

.

the

4285A

.

P

ages

.

4

LCL

.

Biased

.

..

.

42851A .

.

..

.

5

Key

.

Measurement

.

..

.

..

System

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.

..

.

1-1

1-2

.

1-2

.

1-2

.

1-2

.

1-2

.

1-3

.

1-3

.

1-3

1-4

.

1-4

.

1-4

.

1-4

.

1-5

.

1-5

.

1-5

.

2-1

.

2-1

.

2-2

.

2-3

.

2-4

.

2-4

. 2-5

.

2-5

2-6

3. Basic Measurement Examples

Introduction ......

Capacitor Measurement . . . . . .

Measurement Conditions

Equipment Required ................

Operation Procedure ...... ...... ....

Inductance Measurements . . . . . . . . . . . . . . . 3-5

Measurement Conditions .............. 3-5

Equipment Required ................ 3-5

Operation Procedure ...... ...... .... 3-5

DC Voltage Biased Measurement . . . . . . . . . . . . 3-10

Measurement Conditions .............. 3-10

Equipment Required ................ 3-10

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

...... ....

......

........

3-1

Contents-1

Preparation

Operation

Measurements

Equipment

Operation

DC

Current

Measurement

Equipment

Preparation

Operation

Precision

Measurement

Equipment

Preparation

Congure

Operation

4.

Instrument

Memory

System

Internal

A

utomatic

ALC Theory

ALC

Operation

List

Structure

LIST

Print

Printer

Before Measurement

Checking

Conguring

Checking

Measurement Time

Voltage/Current

Sweep Function

LIST

SWEEP

Function

the Option

Procedure .

Using 1m/2m

Required .

Procedure .

Biased

Conditions

Required

Before

the

Option

the

System

Q

Function

Memory

SWEEP

Mode

Requirements

Troubleshooting

.

Procedure

Measurement

Conditions

Required

Before

the

Option

the

Precision

Procedure

F

eature

.

Non-V

olatile

Level

Control

of

Operation

Procedure of

of

LIST

DISPLA

SETUP

Measurement

.

Installed

.

T

est

.

Measurement

.

Measurement

Installed

High

Current

.

Measurement

Installed

Q

measurement

.

Tutorial

.

..

.

..

Memory/External

Function

.

Setting

the ALC

..

.

SWEEP

.

Y

page

.

page

.

function

Procedure

.

Leads

.

Biased

.

..

.

Range

.

..

.

Measurement

.

..

.

Memory

.

..

.

Function

.

..

.

..

.

..

.

..

.

..

.

..

.

System

..

.

..

.

..

.

..

.

..

.

..

.

Card

.

..

.

..

.

..

.

..

.

. 3-10

..

.

..

.

. 3-20

..

.

..

. 3-27

.

. 4-5

.

..

. 4-9

..

.

3-10

3-14

3-20

3-23

3-27

3-28

4-1

4-2

4-3

4-4

4-5

4-6

4-9

4-10

Contents-2

5. What's Next?

Index

Figures

1-1. Line

1-2. Bias

1-3. Q

1-4. Chaining

2-1. Front

2-2.

2-3.

2-4.

3-1.

3-2. Connecting

3-3.

3-4. Measurement

3-5. Connecting

3-6. 16034E

3-7. Make

3-8. Connecting

3-9.

3-10.

3-11.

3-12.

3-13.

3-14.

3-15.

3-16.

3-17.

3-18.

3-19.

3-20.

3-21.

3-22.

3-23. Open

3-24. Connecting the Furnished Shorting Bar

3-25. F

3-26. Precision Q Measurement Setup . .

3-27. Connecting a Shorting Bar

3-28. Connecting the SMD T

3-29. Connecting DUT to the SMD T

3-30. Inductor Precise Q Measurement Results . . . . . . .

4-1. Feedback Control Circuit

4-2. Structure of LIST SWEEP Function .. ...... . 4-5

4-3. List Sweep Modes ................. 4-7

V

oltage

Current

Measurement

Panel

MENU

Entry

CURSOR

Connecting

Measurement

Connecting

V

Cable

42102A

OPEN

SHORT

100

42842C

High Current

Keys

the

oltage

Correction



Resistor Connection

Condition

errite-Cored Inductor Measurement Results

Selector

System

the 42841A

Overview

Keys

T

ermination

T

ermination

T

.

Keys

and

the

16047C

a

Shorting

DUT

Results

the 16034E

Contacts

16034E

DUT

Results

the

16047C

A

Shorting

DUT

Biased

100

ermination

ermination (Alternative)

Bias

(Option

Resistor

Current T

Biased Measurement

of

.

Conguration

and

.

Field

Operation

.

Bar

to

the

16047C

for

.

in

OPEN

to

SHORT

to

the

16034E

of

The

.

Bar

.

001)

P

age

.

connection

Connection

(Alternative)

Connection

est Fixture

the

42842C

est Fixture

.

the

.

a

.

Condition

.

..

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

.

42851A

.

Example

.

220

pF

Capacitor

.

Condition

.

F

errite-Cored

.

Measurement

.

..

.

..

Connection .

Setup .

.

.........

...

..........

.

.........

est Fixture

.

..

.

..

. 2-4

.

Inductor

.

Results

..

.

..

.

..

.

..

.

...... .

.

..

.

..

.

..

.

..

. 3-16

..

. 3-17

.

..

.

..

.

.....

3-11

3-12

3-13

3-15

3-16

3-18

3-21

3-23

3-24

3-25

3-26

3-28

3-29

3-30

3-31

1-2

1-4

1-5

1-6

2-1

2-2

2-6

3-2

3-3

3-4

3-6

3-7

3-8

3-9

4-3

Contents-3

T

ables

1-1. Line

1-2.

Fuse

NN

N

PRINT

4-1.

Voltage

Selection

N

NN

DISP

Selection

N

and

.

NN

PRINT

.

1-2

.

..

N

NN

N

DATA

A

vailability

.

. 1-3

.

4-9

Contents-4

1

Before

You

Begin

Welcome

kHz {

30

to

the

MHz)

4285A

sets

a

new

materials measurement.

Use this

Whatever

this

you

This

guide

can

guide

guide to

you

are

will

give

start

using

covers:

install

a

novice

you

the

Installation

Front/Rear

Front P

Basic Measurement

Memory Function

Automatic

List Sweep

Printing

P

erforming

P

anel

Components

anel

Operation

Level

Control

Function

Measurement

Error

Examples

Structure

Correction

Precsision

standard

and

learn

to

LCR

a

working

4285A

immediately

Function

Operation

Result

LCR

in

advanced

how

meter

knowledge

Operation

Function

Meter

to

operate

use

world.

or

of

to

evaluate

The

4285A

component

the

4285A

an

experienced

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4285A

your

(75

and

quickly

user

so

that

devices

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Initial

Considerations

The

4285A

mechanically

carefully

for

passes

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performing

signs

of

its electrical

both the

performance

(Agilent

part number

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carrier and

test procedure

04285-90030).

inspected

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Agilent T

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4285A

electrically and

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F

or

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Maintenance

is

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Manual

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Before You Begin 1-1

Preparation

for

Use

P

ower Requirements

Before

installed

The

4285A

V

oltage

turning the

power on,

and interconnected

requires

:

90

to

132

the

V

ac

the 4285A

correctly.

following

,

198

to 252

power

Vac

and its

source:

accessories must

be

Line

Voltage

Caution

and Fuse

Selection

Frequency

P

ower

Figure

on

1-1

the

instrument's

Before

that

the

Switch is

:

47

:

200

V

A

illustrates

connecting

correct

fuse

correctly

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66

Hz

maximum

the

rear

Figure

the

instrument

has

set.

line

panel.

1-1.

been

voltage

Line

to

installed

selection

V

oltage

the

power

and

switch

Selector

source

the

Line

and

,

make

V

oltage

fuseholder

sure

Selection

1-2 Before You Begin

Line

V

Select

oltage

the

Selection

proper

voltage

T

able

selector

1-1.

Line

Voltage

Selector

115 V



90{132 V

230 V198{252 V

according

V

oltage

Line

V

oltage

, 47{66 Hz

to

the

T

Selection

able

1-1

.

Fuse Selection

Select proper fuse according to the Table 1-2. Current ratings for

the fuse are printed under the fuseholder on the rear panel, and are

listed, along with the fuse's Agilent part number,inTable 1-2.

T

able 1-2.

Fuse Selection

Caution

Setting

Current

Up

DC

Measurement

the

High

Biased

System

If you

need this

and Service

To

remove the

fuse pops

Use

the

DO

NOT

by-pass

By

combining

a

maximum

out.

the

proper

required

use

a

blown

Equipment

Operating

V

oltage

115

230

fuse,contact

Oce.

fuse,

fuse

current

a

mended

fuse

with

the

of

10A

DC

Required

Rating/Type

UL/CSA

V



UL/CSA

V



turn

the

for

the

rating

fuse

.

Find

42841A and

bias

Fuse

3A

250V

Time

Delay

2A

250V

Time

Delay

your

nearest

fuse

holder

line

voltage

and

of

the

or

short-circuit

out

what

current to

P

art

ac

type

2110-0381

ac

type

2110-0303

Agilent

counterclockwise

selected.

specied

the

caused

the fuse

the 42842C,

the

device

Fuse

Number

T

echnologies

Use

only

type

as

replacements

fuse-holder in

to blow!

the

4285A

under

test

until

fuses

order to

can

(

dut

Sales

the

with

.

apply

).

To

perform

following equipment

4285A Precision

42841A

42842C

16048A

Check

Option

and

is

A

CCESSORY

Installing the T

When you use the 42841A Bias Current Source with the

Current Test Fixture

high

Bias

T

est

the

Option

002

is

installed

CONTROL

current

LCR Meter

Current

Leads

slots

installed.

in

the

est Fixture

, connect the 42842C directly to the 42841A. The

are

Source

T

est

in

Option

right

INTERF

biased

impedance

required.

with

Fixture

the

rear

002

most

A

panel

has

slot

CE.

Option

a

(looking

measurement,

002

of

the

4285A

50

Amphenol

from back),

the

to

conrm

connector

labeled

42842C Bias

that

connection procedure is:

1. Put the guide rods of the 42842C into the guide holes in the front

of the 42841A.

2. Connect the output terminal of the

42841A to the input terminal of

the 42842C by pushing the 42842C toward the 42841A.

3. Rotate the retaining screws clockwise in front of the 42842C until

it locks.

,

Before You Begin 1-3

Interconnecting

the Units

Interconnect

cables

1.

2.

as shown

Connect the

TO

UNKNOWN terminals

Leads

.

Connect

4285A

using

and

the

the 4285A,

in

Figure

UNKNOWN

the

A

CCESSORY

the

BIAS

furnished

the

42841A,

1-2

,

use

terminals

of

CONTROL

accessory

the

INPUT

control

and

following

of

the

42842C

INTERF

the

42842C

4285A

with

A

connector

interface

using

procedure

and

the

16048A

CE

connector

of

cable

.

the

proper

T

est

of

42841A

the

Setting Up

Precision

Measurement

1-4 Before You Begin

Figure

the

Q

System

1-2. Bias

Combined

measurement

Equipment

T

o perform precision Q measurement, the following equipment are

Current System

with

the

42851A,

using

the

resonant

Required

Conguration

the

4285A

performs

measurment

precision

method.

Q

required.

4285A Precision LCR Meter with Option 002

42851A Precision Q A

dapter

10503A BNC Coaxial Cable (2 ea.)

Interconnecting the Units

Connect the cables between the 4285A and the 42851A as shown in

Figure 1-3, use the following procedure.

1. Connect the UNKNOWN terminals of the 4285A and the

TO UNKNOWN terminals of the 42851A using two 10503A BNC

coaxial cables.

2.

Connect the

4285A

the

furnished accessory

ACCESSORY

and the

CONTROL INTERF

CONTROL INPUT

control interface

connector of

cable.

ACE

connector of

the 42851A

the

using

Connecting

42841A,

and

Figure

4285A,

42851A

1-3.

Q

Measurement

The

42841A

and

both

can

control

eld

setting

Equipment

The

following

4285A

42841A

42842C

42851A

16048A

and

of

them

either

on

the

Required

equipment

Precision

Bias

Current

Bias

Current

Precision

T

est

Leads

10503A BNC Coaxial Cable (2

System Conguration

the

can

the

SY

LCR

42851A

be

42841A

STEM

use

connected

or

CONFIG

are

required.

Meter

with

Source

T

est

Fixture

Q

A

dapter

ea.)

the

same

to

42851A

page

Option

accessory

a

4285A.

depending

.

002

control

However

on

,

the

interface

the

4285A

CONFIG

Interconnecting Cables

Connect the cables between the 4285A, the 42841A, and the 42851A

as shown in Figure 1-4 using the following procedure

1. Connect

4285A and the

the A

CCESSORY CONTROL INTERF

BIAS CONTROL INPUT A connector of the 42841A

.

ACE connector of the

using the furnished accessory control interface cable.

,

2. Connect the BIAS CONTROL INPUT B connector of the 42841A and

the CONTROL INPUT connector of the 42851A using the furnished

accessory control interface cable.

Before You Begin 1-5

3. When

you perform

the UNKNOWN

terminals of

ahigh

terminals of

the 42842C

DC current

the 4285A

using the

bias measurement,

and the

16048A

test

leads

connect

TO UNKNOWN

.

When you

perform a

UNKNOWN terminals

terminals of

the 42851A

precision Q

of the

4285A and

using two

measurement,

the

TO

10503A BNC

connect

the

UNKNOWN

coaxial

cables

.

Figure

1-4.

Chaining

T

o

learn

how

accessories

passed

If

you

its

want

instance),

number

04285-90030).

the

to

,

continue

self-test

an

electrical

go

through

use

and

42841A

the

4285A

with

is

ready

inspection

the

4285A

and

the

Precision

42851A

LCR

chapter

to

make

measurements

(incoming

Maintenance

Meter

.

The

inspection,

Manual

and

4285A

its

has

already

.

for

(Agilent

part

1-6 Before You Begin

2

Getting

Front

Acquainted

P

anel

Description

with the

Figure

front

2-1

panel

shows

is

given

4285A

the

front panel

in the

of the

4285A. A

following paragraphs

description

.

of

the

LCD P

anel and Softkey

Figure 2-1.

Front

P

anel

Overview

To simplify the front panel by reducing the front panel keys for each

of the many instrument functions

,the

4285A employes LCD (Liquid

Crystal Display)-displayed \menus" for operator input. These menus

list the possible choices for a particular function,

corresponding to one of the ve softkeys located to

with each choice

the right of the

LCD screen.

In this guide the two types of keys are dierentiated in this way:

4

HARDKEY

NNNNNNNNNNNNNNNNNNNNNNN

SOFTKEY

5

Keys on the front panel

Keys located to the right of the LCD bezel

Getting Acquainted with the 4285A 2-1

MENU keys

Display

What

Measurement

and

Pages

is

the

Modes?

The

4285A changes

the

measurement mode

are

IT

ALICS

left

The

Normal

bridge

called

DISPLA

.)

The currently

corner of

4285A

has

LCR

measurement

the display

and the

Y pages

the LCD

screen enclosed

following

measurement

method.

format dynamically

MENU key

.(In

this guide

selected page

three

measurement

mode

which

pressed. These

the page

name is

in the

displayed in

angle bracket.

modes

uses

the

corresponding to

formats

name is

written

the upper

.

auto

balancing

in

Precision

High

42841A

These

SY

STEM

The

4285A

display

Q

measurement

current

and

DC

42842C.

measurement

CONFIG

has

three

pages

as

follows

biased

modes

page

MENU

when

measurement

can

be

under

4

CA

keys

.

combined

when

changed

T

ALOG/SYSTEM

,

and

each

with

combined

on

the

5

.

MENU

the

42851A.

CONFIG

key

with

has

the

eld

four

in

2-2 Getting Acquainted with the 4285A

4

DISPLAYF

ORMAT

Figure 2-2.

5

MENU K

eys

The display pages under this menukey are used to choose the

measurement display format, sorting, and sweep results

performs measurement from only these pages

.

Some major selection

. The 4285A

elds can be set from these pages the same as from the elds on the

MEAS SETUP

on or, when you press

page under

4

DISPLAYFORMAT

4

MEAS SETUP

5

. When the 4285A is turned

5,MEAS DISPLAY

page is

automatically selected. Press a softkey to choose other pages.

MEAS DISPLAY

BIN No. DISPLAY

BIN COUNT DISPLAY

page

LIST SWEEP

DISPLAY

page

4

MEAS SETUP

The display

5

pages under

measurement conditions

to set

the bin

4285A stops

MEAS

choose

SETUP

other

MEAS

CORRECTION

LIMIT T

LIST

4

CAT

ALOG/SYSTEM

The

display

memory/external

congration,

displayed,

4

CAT

ALOG/SYSTEM

Press

a

CA

T

ALOG

SY

STEM

CABLE

SELF

sorting limits

data acquisition.

page

pages

SETUP

page

ABLE

SWEEP

SETUP

5

pages

and

the

4285A

5

softkey

to

page

CONFIGURA

CORRECTION

TEST

page

is

automatically

.

under

memory

for

service

stops

,

the

choose

this menukey

(including the

.

While

When

page

this

menukey

card

management,

functions

data

acquisition.

CA

T

ALOG

other

pages

TION

page

are

used

correction function),

these

pages

you

press

selected.

are

Press

used

for

.

While

When

page

is

automatically

.

to

set

all

are

displayed,

4

MEAS SETUP

a

softkey

for

internal

system

these

pages

you

and

the

5

,

the

to

are

press

selected.

Note

Dierence

Field

and

Area

CURSOR

CURSOR K

between

Monitor

and

eys

When

the

42851A

and

activated,

4

MEAS

\Precision

A

eld

A

monitor

or

value

CURSOR

A

CURSOR

SETUP

Q

is

an

area

of

(described

is

5

each

access desired elds on each display page

eld where it resides from the normal white

Precision

all

display

will

be

changed.

Measurement"

area

on

the

LCD

is

an

area

instrument

below),

a

movable

indicator

Q

A

pages

in

screen

on

the

function.

but

dapter

(format)

F

or

operation

Chapter

to

LCD

a

monitor

on the

is

connected

under

information,

4

DISPLA

to

Y

the

F

4285A

ORMA

refer to

3.

set

an

screen

Fields

area

LCD

instrument

to

indicate

can

be

can't

panel

function.

the

accessed

be

accessed.

that

allows

status

. The CURSOR changes the

background to a dark

T

by

5

background (inverse video). The CURSOR keys are used to move

the CURSOR to the eld you wish to use

where the CURSOR resides

, the 4285A changes the softkey labels

. Corresponding to the eld

and

the

you

.

to

Getting Acquainted with the 4285A 2-3

ENTRY K

eys

In

some

cases

parameter

are

used to

digits

4

ENTER

on

4

BA

you

5

4

0

5

terminates numeric

the input

CK

SP

ACE

enter numeric

displayed

input

data and

specied

,it

, such

input these

5

to

4

,a

9

line (second

5

deletes one

on the

enters the

unit.

is necessary

as frequency

values.

5

period

,a

4

.

line from

last character

values from

softkeys.

These unit

displayed value

to supply

or comparator

The ENTRY

minus sign

input data

the bottom

the ENTRY

numeric values

limits.

keys are

5

,

4

-

and enters

5

ENTER

the displayed

of the

keys

also

on

input

,

available

teminate

the

input

for a

The ENTRY

composed of

,and

4

BA

CK

LCD screen).

value

.

When

units

numeric

line

in

chosen

keys

SP

A

value

are

the

CE

5

.

GPIB

Status

and

4

TRIGGER

Indicator

5

4

K

5

ey

Key

LCL

2-4 Getting Acquainted with the 4285A

Figure 2-3.

The

General

the

RMT

indicators

when

it

forces

mode

and

4

5

is the only front-panel key activeated while the

LCL

remote mode

(remote),

.

These

is

connected

the

4285A

if

Purpose

TLK

indicators

to

the

GPIB

.

Interface

(talk),

to

a

controller

the

local

controller

are

(front-panel)

Bus

L

TN

used

had

Entry K

(

gpib

)

status

(listen),

to

and

show

(computer)

mode,

not invoked

eys

the

indicators

SRQ

(service

4285A's

via

GPIB

if it

was in

a

local

4285A is in the

consist

request)

GPIB

5

.

4

LCL

remote

lockout.

status

(local)

This key is used to manually trigger the 4285A when it is set to the

manual trigger mode

.

of

Memory Card

Caution

Slot

This

slot

is

used to

or

to store

Stored

The

Memory card

the

memory card

Use

Agilent-specied

data

damaged.

guaranteed,

T

o

insert

card

opening.

T

o

remove

and

remove

Do

NOT

Doing

memory

Store

The

card case

instrument settings

records can

only

.

If

Non

and

a

memory

with

the

Insert

a

the

remove

so

may

card

memory cards

electrostatic

environmental

Storage

T

emperature

Humidity

connect a

be checked

is ejected

slot.

memory

other

memory

4285A-specic

the

data

may

card

into

label

facing

the

memory

card

up

into

card.

a

memory

damage

may

be

the

lost.

memory

in their

protects memory

discharge.

Also,

conditions.

Range:

memory card

except for

on the

by pressing

cards

containing

cards

are

data

contained

be

lost.

the

MEMORY

and

with

the

slot

from

the

4285A,

card

while

card

furnished card

cards

store

memory



C

0

30

30%

to

which allows

correction information.

CAT

ALOG

the UNLOCK

page

.

button above

4285A-specic

used,

the

card

the

contacts

until

it

press

LO

ADing or

and

any

cases

from

contamination

cards

to

+70

85%

(@+50

4285A

on

clicks



C

may

a

memory

slot, hold

toward the

into place

the UNLOCK

STORing data.

data

stored

when

under



C)

you to

be

card

the memory

slot

.

button

in

the

not

in

use

and

the

following

load

is

.

not

4

DC-BIAS

5

K

ey

Contrast Control Knob

Do

NOT

shock

When

storing

empty

Do

NOT

This

type

the

(no

NOT

use

key

switch,

4

DC BIAS

touch

indicator

indicator is OFF

memory

liquid

is

used

and

5

.

is

ON.

or

stress

or

moving

card

the

connector

chemicals

to

control

the

When

.If

the

memory

your

inserted).

DC

BIAS

4

DC BIAS

4

DC BIAS

4

DC BIAS

to

the

cards

4285A,

contact

clean

the

DC

bias

on/o

5

is

set

5

is

set

5

is set to OFF

.

be

surface

contacts

output.

LED indicator

to

ON,

to

is set to ON according to the LCD display

output.

This knob controls the LCD's CONTRAST

LCD screen well, adjust this knob

.

sure

the

of

memory

a

memory

card

slot

and

.

5

is

a

toggle

above

LED

on/o

the DC

OFF,

4

DC BIAS

BIAS on/o

the

DC

is located

BIAS

, even though the DC bias

, the set DC bias

isn't being

. When you can't read the

is

do

LED

Getting Acquainted with the 4285A 2-5

Front

P

anel

Operation

Basic

operation of

1.

Display the

softkeys

2.

Use the

The

area

desired display

.

CURSOR keys

CURSOR will

to which

you can

the 4285A

to move

be an

inverse video

set the

is described

page using

the CURSOR

CURSOR. (Refer

in the

both the

marker,

following paragraphs

MENU keys

to the

and

to

eld

the

Figure

to

eld

2-4

and the

be

used.

is

an

)

.

3.

Dierent

of

keys

the

softkeys

unit

data is

eld

Figure

the

CURSOR.

and

numeric

labeled

softkeys

entered with

selected,

2-4.

softkeys

5

4

ENTER

entry keys

instead of

for

CURSOR

will

be

Select

are

and

used to

by the

the default

example

K

eys

and

displayed

press

enter numeric

is pressed,

unit names

5

4

ENTER

.

unit depending

,test

frequency's

Field

corresponding

a

softkey

. The

the softkeys

available.

When

4

ENTER

Operation

to

numeric entry

data. When

will

change

You

can

5

is

used, the

on the

unit

is

Hz.

Example

the position

one

of

to

the

use

these

numeric

CURSOR

2-6 Getting Acquainted with the 4285A

3

Basic

Measurement Examples

Introduction

Capacitor

Measurement

Conditions

Equipment

Required

This

chapter

that

can

be

includes

the

conditions

perform

these

Operation"

In

this

example

the

following

DUT

:

Function

Frequency

T

est

Signal

16047C

Shorting

demonstrates

made

DUT's

,

and

operation

measurements

in Chapter

a

conditions

220

(Agilent

:

Level

:

T

est

Fixture

bar

(Agilent

several

with the

4285A and

specications

procedures.

2.

220

pF

ceramic

.

pF

ceramic

P

art

C

p

10

1

V

P

art

, equipment

are

capacitor

Number

-D

MHz

Number

types

of

its accessories

The basic

the same

capacitor

0160-4812)

5000-4226)

impedance

measurements

.

Each

example

required, measurement

procedures to

as the

will be

or

\Front P

anel

measured under

equivalent

Operation

Procedure

1. Turn

2.

Set

the

a.

b.

c.

the

4285A

the

4285A

auto

balancing

Press

4

CA

T

ALOG/SYSTEM

page

will

now

Move

the CURSOR

NN

NNNNNNNNN

OFF

will be displayed.

NNNNNNNNNNN

Press

OFF

ON.

to

the

normal

bridge

be

displayed.

to

LCR

measuring

N

NN

SYSTEM CONFIG

5

and

CONFIG

NN

to perform a normal

measurement

mode

method.

NN

N

NN

N

.

N

NN

N

eld.

I

BIAS

NN

,

LCR measurement.

SY

STEM

N

NN

N

Q

ADAPTER

which

N

NN

uses

CONFIG

NN

N

,

and

3. Setup the 4285A's measurement conditions by modifying the elds

on the

Set the

measurement function are

a. Move the CURSOR to the

b. Press

MEAS DISPLA

FREQ

frequency,

line, and the softkey labels will change to the available units

NNNNNNNNNNN

(

kHz

the

FREQ

eld to 10 MHz. (The other functions

1.0000MHz

415

and

NNNNNNNNNNN

and

MHz

eld.

405.10

). Press

Y

page.

, including the

left at the default settings

FREQ

eld. The current measurement

.)

is displayed in this eld.

will be displayed on the system message

NNNNNNNNNNN

MHz.10.0000MHz

is now displayed in

Basic Measurement Examples 3-1

Note

The

FREQUENCY

N

NN

DECR

moved

the

N

NN

INCR

frequency

can

the

value

N

1Hz

to

following

NN

N

1Hz

be

changed

numeric

is

100

N

the

N

,

and

with

value

Hz.

can

N

NN

DECR

FREQ

default

75

kHz

80

kHz

N

NN

N

DECR

the

with

is

be

NN

+

which

eld.

28

frequencies

N

1Hz

specied

N

1kHz

entered

changed

are

N

NN

INCR

100 kHz

120 kHz

150

kHz

200

kHz

250

kHz

300 kHz

400 kHz

500 kHz

600 kHz

800 kHz

N

increment

step

N

and

from

N

1MHz

N

INCR

using

displayed when

N

NN

N

*

value

N

the

and

.

N

NN

DECR

1MHz

1.2 MHz

1.5

MHz

2

MHz

2.5

MHz

3MHz

4MHz

5MHz

6MHz

8MHz

and

decrement

respectively

N

,

which

entry

N

NN

will

keys.

N

NN

N

INCR

*

,

N

+

set

be

The default

N

NN

N

1Hz

,

the CURSOR

a frequency

10 MHz

12 MHz

15 MHz

20 MHz

25 MHz

30 MHz

the

current

.

The

step

displayed

is

from

test

value

when

step

Note

The

measurement

displayed

MEAS

4.

SETUP

Connect

The

16047C

Connect

in Figure

when

the

3-1.

conditions

4

MEAS

page

is

test

xture

T

est

Fixture

16047C to

SETUP

the

same

to

is

the 4285A's

5

can

is

the

used

also

be

pressed.

as

in the

4285A.

for

set

on

the

The

setup

preceding

this

measurement

UNKNOWN

MEAS

operation

steps

terminals

SETUP

from

example.

,

on

2

as

page

the

to

3.

shown

3-2 Basic Measurement Examples

Figure 3-1. Connecting the 16047C

5. P

erform error

To

compensate for

correction is

correction.

the 16047C's

required.

residuals and

strays,

OPEN/SHORT

a. Leave

b.

Press

the 16047C

4

MEAS

displayed.

c.

Move

the

N

NN

MEAS

OPEN

N

d.

N

MEAS

Press

data

measurement.

progress

approximetory

completed.

N

e.

f.

NN

ON

Press

Connect

condition

CURSOR

N

NN

N

will

NN

N

to set

a

as

SETUP

N

are

displayed.

N

OPEN

be

50

is

displayed

the

shorting

shown

OPEN as

N

CORRECTION

5

and

to

the

N

to

perform the

The

displayed

seconds

OPEN

bar

to

in

Figure

shown

NN

N

OPEN

message

on

until

on

the

correction

the

16047C

3-2

in

N

Figure

N

NN

. The

N

ON

eld.

OPEN correction

OPEN

measurement

the

system

the

message

system

message

function

to

set

.

3-1

.

CORRECTION

N

OFF

,

and

in

message

OPEN

up

line

measurement

line

.

to

ON.

the

SHORT

page

.W

is

ait

Figure

g.

Move the CURSOR to the

NNNNNNNNNNNNNNNNNNN

NNNNNNNNNNNNN

MEAS SHORT

NNNNNNNNNNNNN

h.

Press

NNNNNNNNNNNNNNNNNNN

MEAS SHORT

data measurement. The message

progress

will be displayed on the system message line

3-2.

Connecting

SHORT

are displayed.

to perform the SHORT

eld.

SHORT measurement in

Wait approximetory 50 seconds until the message

measurement completed.

line.

i. Press

NNNNNNNN

ON

to set the SHORT correction function to ON.

is displayed on the system message

6. Connect a DUT to the test xture.

a

Shorting

NNNNN

NNN

ON

,

NNNNN

OFF

Bar

NNNNNN

,and

correction

.

SHORT

Basic Measurement Examples 3-3

Insert

as

the DUT

shown in

clockwise

electrodes

into the

Figure

until the

.

16047C's measurement

3-3

.

DUT

Tighten

is

in

rm

the

contact

contacts

measurement

with

the

deeply

terminal

16047C's

knob

7.

P

erform

Press

repeats

values

Figure

the

4

DISPLA

the

measurements

are

displayed

3-3.

Connecting

measurement.

5

.

Y

F

ORMA

The

T

in large

DUT

internal trigger

. The

capacitor's

characters as

to

the

starts

measured

shown

16047C

and

C

in

Figure

continuously

and

D

p

3-4

.

3-4 Basic Measurement Examples

Figure 3-4. Measurement Results for a 220 pF Capacitor

Inductance

Measurements

This

section describes

nH

ferrite-cored inductor

conditions

DUT

.

: Chip

(Agilent

an example

.It

will be

type 470

Part

Number 9140-1235)

of measuring

measured under

nH ferrite-cored

a chip

the following

inductor

type 470

Measurement

Equipment

Operation

Conditions

Required

Procedure

Function

Frequency

T

est

Signal

16034E T

1.

Turn

the

2.

Set

the

auto

a.

Press

page

b.

Move

and

c.

Press

3.

Setup

the

MEAS

Set

FUNCtion

10

mA constant.

settings

:

Level

est Fixture

4285A

balancing

4

CA

T

ALOG/SYSTEM

will

now

the

CURSOR

N

OFF

will

N

OFF

the

4285A

DISPLA

.)

L

25.2

:

to

10

ON.

the

normal LCR

bridge

be

displayed

to

be

displayed.

perform

measurement

Y

page

,

L

s-Rs

(The

-

R

s

MHz

mA

(constant)

measuring

5

amd

the

CONFIG

a

normal

conditions

.

FREQuency

other

functions

measurement mode

method.

N

NN

N

by

MHz,

be

N

I

BIAS

lling

left

N

SYSTEM

LCR

to

CONFIG

eld.

measurement.

25.2

will

N

.

N

SY

N

NN

and

at

which uses

STEM

N

NN

Q

ADAPTER

,

in

the

LEVEL

the

default

CONFIG

N

NN

N

elds

to

N

on

N

,

a.

Move

the

CURSOR

function,

N

Cp-G

,

b.

Press

displayed.

c.

Press

d. Move the CURSOR to the

frequency,

e. Press

message line

units (

the

FREQ

f. Move the CURSOR to the

level,

g. Press

line, and the softkey labels will change to the available units

NNNNNNNN

NNNNN

(

mV

,

V

LEVEL

-D

C

p

N

NN

Cp-Rp

N

NN

N

more

X/6

N

NN

N

Ls-Rs

1.0000MHz

5,4

4

5

2

, and the softkey labels will change to the

NNNNNN

NNNNN

kHz

and

eld.

1.00V

, will be displayed in this eld.

415

and

NNNNNNNN

,

A, and

eld.

,

is

displayed

N

,

and

N

until it

to select

5

,and

.

NNNNNN

NNNNN

MHz

405.10

NNNNNNNN

mA

to

the

FUNC

N

NN

more

1/6

is changed

the

FREQ

, will be displayed in this

5.25.2

4

2

). Press

LEVEL

will be displayed on the system message

). Press

eld.

The

Current

N

Cp-D

in

this

eld,

NN

N

are

measurement

L

s-Rs

eld. The current measurement

will be displayed on the system

NNNNNN

NNNNN

MHz.25.2000MHz

eld. The current test signal

NNNNNNNN

mA.10.0mA

and

displayed.

N

NN

more

to

is displayed in the

Basic Measurement Examples 3-5

,

N

4/6

and

function.

eld.

is displayed in

measurement

N

Cp-Q

N

,

N

NN

Ls-Rs

available

NN

N

is

Note

The

measurement

page

displayed

the

MEAS

when

SETUP

conditions

4

MEAS

page

is

same

can

SETUP

as

also

5

is

in the

be

set

from the

pressed.

The

preceding steps

MEAS SETUP

setting

operation

(a) to

on

(g).

h.

Press

i.

Move the

ALC

are

j.

Press

4.

Connect

The

16034E

measurement.

Connect the

shown in

4

MEAS

SETUP

CURSOR to

function,

displayed.

N

ON

to

the test

chip T

16034E to

Figure 3-5

5

.The

OFF

,is

set

the

xture to

est Fixture

.

MEAS SETUP

the

ALC

eld.

displayed in

test

signal

current

the 4285A.

(for chip

the UNKNOWN

page is

The

current

this

eld,

and

level

to

components) is

terminals

of

displayed.

status

N

NN

N

ON

and

be

constant.

used

the

4285A,

of

N

NN

OFF

for

the

NN

N

this

as

3-6 Basic Measurement Examples

Figure

5. P

erform OPEN/SHORT correction.

3-5. Connecting

the 16034E

OPEN/SHORT correction is required to compensate the residual

impedance and stray admittance of the 16034E.

a.

Leave the 16034E electrode contacts OPEN as shown in

Figure 3-6

between high

. When measuring OPEN correction data, the distance

and low contact electrodes should be same as

when the DUT is connected.

b.

Press

4

will

be

c.

Move

the

N

NN

N

MEAS

d.

N

Press

measurement.

OPEN

measurement

message

e.

f.

N

Press

Connect the

a

SHORT as

i.

Loosen the

ii.

Push the

iii.

Tighten

Figure

MEAS

SETUP

displayed.

CURSOR

N

OPEN

will

N

line

N

to

N

OPEN

.

set

MEAS

N

ON

16034E's

shown in

end of

the

3-6.

N

NN

N

W

the

Knob.

knob

be

N

ait

5

16034E

and

to

Contacts

N

NN

N

CORRECTION

the

OPEN

displayed.

to

perform

approximately

completed.

OPEN

the high

two

Figure

as

shown

correction

electrodes

3-7

electrode.

N

the

N

in

N

NN

N

eld.

OPEN

50

is

displayed

.

Figure

in

OPEN

. The

CORRECTION

N

ON

,

correction

seconds

function

directly

3-7

N

OFF

until

on

to

together

.

Condition

N

,

and

data

the

system

ON.

to

page

message

make

Basic Measurement Examples 3-7

g.

Move

N

MEAS

h.

Press

measurement.

SHORT

message

i.

Press

6.

Connect

Place

Figure

N

the

3-8

Figure

the

N

SHORT

N

MEAS

CURSOR

N

NN

N

3-7.

N

will

N

NN

N

SHORT

N

W

measurement

line

.

N

ON

to

set

the SHORT

the

DUT

to

DUT

on

the

.

Make

the

to

the

be

displayed.

N

to

perform

ait

approximately

completed.

the

test

16034E's

16034E

SHORT

the

to

eld.

SHORT

N

ON

50 seconds

is

displayed

correction function

xture

.

measurement block,

N

OFF

,

correction

until

on the

to

Condition

N

,

and

data

the

message

system

ON.

as shown

in

3-8 Basic Measurement Examples

7.

Perform

Figure

3-8. Connecting

the measurement.

DUT

to

the

16034E

Press

4

DISPLA

repeats

the

ferrite-cored

Figure

3-9

.

<MEAS

FUNC

FREQ

LEVEL:*

Vm : 957.5mV

Y

F

measurement.

inductor

:

:25.2000MHz BIAS

L

R

5

.

ORMAT

The

are

displayed

DISPLAY>

Ls-Rs

10.0mA INTEG:

s

:

4

5

s

:

1

.

6

Internal

trigger

measured

in

large

L

SYS

RANGE:

AUTO

:

0.000

LONG

.

6

8

7

n

H

6

4

1

9

Im : 10.01mA

starts

and

s

characters

MENU

CORR:OPEN,SHORT CBL:0m

Figure 3-9.

Measurement Results of The Ferrite-Cored Inductor

R

V

and

continuously

values

s

as

of

the

shown

in

Basic Measurement Examples 3-9

DC

V

oltage

Measurement

Biased

When

the 4285A

mA)

DC bias

In

this example

following

DUT

: 470

is equipped

can be

,a

470 pF

conditions.

(Agilent

applied to

capacitor will

pF ceramic

Part

with Option

the DUT

capacitor

Number 0160-4808)

001 DC

.

be measured

Bias,

6

40V

under

(

the



100

Measurement

Equipment

Preparation

Measurement

Operation

Conditions

Required

Before

Procedure

Function

Frequency

T

est

DC

4285A

16047C

Shorting

Checking the

First of

T

o

do

the

this

1.

Turn

2.

Set

the

a.

b.

c.

Signal

Bias

Level

all, conrm

this

DC

BIAS

area,

the

auto

Press

page

Move

and

Press

:

Level

with

T

est

bar

,

press

your

4285A

balancing

4

CA

will now

the

N

NN

N

OFF

N

OFF

-

C

p

5

MHz

:

Option

Fixture

(Agilent

Option Installed

4

CA

(#001)

4285A

to the

T

ALOG/SYSTEM

CURSOR

N

will

N

to

1

V

5

V

001

P

art

Number

that your

TALOG/SYSTEM

monitor

is

equipped

ON.

normal

bridge

5

be displayed

to

the

be

displayed.

perform

the

D

(Constant)

5000-4226)

4285A is

area.

LCR

measuring method.

and

CONFIG

normal

equipped

N

SYSTEM

5

and

When

with

N

SYSTEM

INSTALLED

Option

measurement

N

NN

eld.

LCR

N

CONFIG

measurement.

or

with

N

NN

N

CONFIG

001.

N

I

equivalent

the

N

is

displayed

mode

N

NN

.

SY

STEM

N

NN

N

BIAS

,

Option

,

and

which

N

Q

ADAPTER

check

uses

CONFIG

N

NN

N

001.

in

N

,

3-10 Basic Measurement Examples

3. Setup

on the

Set FREQuency to 5 MHz and LEVEL to a constant 1 V

functions will be left at the

the

4285A

MEAS DISPLAY

a. Move the CURSOR to the

frequency,

b. Press

the softkey lables are changed to the available units (

NNNNNNNNNNN

MHz

FREQ

c. Press

5.5

4

5

). Press

eld.

4

MEAS SETUP

measurement

page.

1.0000MHz

will be displayed on the system

NNNNNNNNNNN

MHz.5.0000MHz

5

.The

conditions

default settings

FREQ

, will be displayed in

MEAS SETUP

eld.

will be new displayed in the

by

The current measurement

page will be displayed.

modifying

.)

this eld.

message line

the

elds

. (The other

,and

NNNNNNNNNNN

kHz

and

d.

e.

4.

Connect

Move

the CURSOR

displayed.

N

ON

Press

the test

N

to

set

the

xture to

to the

test

ALC

eld,

signal

voltage

the 4285A.

and

N

NN

N

ON

level

N

and

to

NN

N

OFF

be

constant.

NN

N

will be

NN

The 16047C

Connect

shown

the

in

Figure 3-10

test xture

16047C to

.

Figure

is used

for this

the UNKNOWN

3-10.

Connecting

measurement.

terminals of

the

16047C

the

4285A,

as

5.

P

erform

OPEN/SHORT

residuals

a.

b.

OPEN/SHORT

impedance and

Leave the

Figure

Press

3-10.

4

MEAS

correction

16047C in

5

SETUP

correction.

is

required

strays admittance

an OPEN

N

CORRECTION

and

N

NN

condition

NN

to

compensate

N

.

as

shown

The

CORRECTION

the

will now be displayed.

NNNNNNNNNNN

c.

Move the CURSOR to the

N

NNNNNNNNNNNNNNNNNNNNNNNNN

MEAS OPEN

d.

Press

measurement. W

completed.

NNN

will be displayed.

NNNNNNNNNNNN

NNNNNNNNNNNNNNNNN

MEAS OPEN

will be displayed on the system message line

ait until the message

OPEN

to perform

the OPEN correction data

NNNNNNNN

OFF

ON

eld.

,

OPEN measurement

, and

will take approximetory 45 seconds.

Press

NNNNNNNN

ON

to set the OPEN correction function to ON.

e.

f. Connect a shorting bar to the 16047C to set up the SHORT

condition as shown in Figure 3-11.

Basic Measurement Examples 3-11

16047C's

in

page

.It

g.

Move

N

MEAS

h.

Press

measurement.

completed.

i.

Press

6.

Connect a

N

Figure

the CURSOR

NN

N

SHORT

N

MEAS

will

N

NN

N

SHORT

W

will

N

ON

to

set

the

DUT

to

the

N

ait

N

be

N

3-11.

to

N

to

until

SHORT

test

displayed

Connecting

the

SHORT

displayed.

perform

the

message

correction

xture

A

eld.

the SHORT

SHORT

on

the

system

.

Shorting

N

NN

OFF

ON

,

correction

measurement

message

function

NN

to

Bar

N

, and

ON.

data

line

.

3-12 Basic Measurement Examples

Insert

shown

the DUT

in

Figure

into

3-12

the

.

16047C's

measurement

contacts

deeply

as

7.

P

erform

the

measurement.

Figure

3-12.

Connecting

DUT

Press

4

MEAS

Internal

and

trigger

the

capacitors

characters

<MEAS

FUNC

FREQ

LEVEL:*

Vm : 1.001 V

CORR:OPEN,SHORT CBL:0m

Voltage Biased (Option 001) Measurement Results

F

as

ORMA

shown

:

C

D

5

.

T

causes

measurements

measured

in

DISPLAY>

Cp-D

5.0000MHz

1.00

p

:

3

:

.

C

p

Figure

3-13

RANGE:

BIAS

V

INTEG:

8

9

.8

0

5

2

Figure 3-13.

to

be

performed

and

D

values

are

.

SYS

MENU

AUTO

:

5.000

MED

18

pF

30

7

Im : 12.70mA

displayed

V

continously

as

large

,

Basic Measurement Examples 3-13

Measurements

Using

1m/2m T

Leads

Note

est

When

you need

UNKNOWN

Leads

.

It

is

not

recommended

16048A

may

The

to

and

increase

measurement

the

square

dierences

If

you

never

you

extended

perform

to

is

performed,

the

individual

the

non-volatile

to extend

terminals,

16048D

the

measurement

error

of

the

can't

be

performed

the

test

cable

correction

16048A/D

the

measured

memory

the measurement

use the

to

use

.

Using other

due

test

frequency

ignored

the

leads)

test

and

is

not

16048A (1

the

extension

types or

error

to

an

individual

.

at

high

CABLE

or

in

case

described

leads

cable

correction

lost

cable from

m) or

16048D(2 m)

cable other

dierent length

.

test

A

ccordingly

frequencies

,

CORRECTION

of

changing

.

below

Once

to

this

data

when

the

4285A

leads

,

even

such

(the

adopt

cable

is

the 4285A

than the

is

proportional

small

as

30

rst

the

test leads

the

correction

stored

is

turned

Test

of cables

test

leads

MHz.

time

,

4285A

in

OFF

.

Equipment

Operation

Required

Procedure

42100A

100



(Agilent

BNC

female-female

(Agilent

BNC

T

(Agilent

1.

Press

4

CORRECTION

2.

Move the

3.

Press

4

CORRECTION

softkeys

or

the following

Resister

P

art

Box

(Furnished

Number

A

P

art

Number

ee

male-female-female

P

art

Number

CA

T

ALOG/SYSTEM

page will

CURSOR to

5

or

4

and

1

2

4

ENTER

menu. The

are displayed.

equivalents

to

the

04285-61001)

dapter

1250-0080)

1250-0781)

5

and

(Furnished

4

ea.

A

dapter

2

ea.

N

NN

N

CABLE

N

CORREC

be displayed.

the

CABLE

5

to select

CORRECTION

either

following instruction

4285A)

to

N

the

4285A)

N

.

The

CABLE

MENU

1

m

or

2

m

CABLE

eld.

screen and

3-14 Basic Measurement Examples

4.

Connect the

UNKNOWN

an

42100A,

04285-61001)

Figure

42102A 100

terminals

the

can

as

furnished

be

used

3-14.

shown

Cable

Resistor

100

Resistor

as

a

substitute

Correction

of

the

in

Figure

42100A

3-15

Box

.

P

age

to

.

If

you

(Agilent

the

P

4285A

don't

art

have

Number

Figure 3-15. 42102A 100 Resistor connection

NNNNNNN

5.

Press

NNNNNNNNNNNNNNNN

REF. 0m.REF measurement.

will be displayed on the

system message line.Wait until the 4285A beeps and displays the

REF measurement complete

side of

NNNNNNNNNNNNNNNNNNNNNNN

REF. 0m

.

.An*will be displayed on the left

6. Connect 16048A/D Test Leads to the UNKNOWN terminals of the

4285A.

Basic Measurement Examples 3-15

7.

Connect the

16048A/D

adapters

Figure

42090A OPEN

Test

(Agilent P

3-16.

Leads with

art Number

Termination

the furnished

1250-0080) as

of the

42100A and

BNC female-female

shown in

the

If

you

shown

Figure

don't

in

Figure

have

3-16.

the

3-17

OPEN

42090A

using

T

ermination

OPEN

the

furnished

Connection

T

ermination,

BNC

congure

f-f

adapters

as

.

3-16 Basic Measurement Examples

Figure 3-17. OPEN Termination (Alternative)

8.

Press

the

left

9.

Connect

16048A/D

in

N

NN

N

OPEN

system

OPEN

side of

Figure

NN

N

.

OPEN

message

measurement

N

NN

N

OPEN

.

the

42091A

test

leads

3-18

.

measurement in

line

.

W

ait

until the

completed

SHORT

with

T

ermination

the

furnished

progress

4285A beeps

.

An

*

BNC

will be

of

the

f-f

will

be displayed

and displays

displayed on

42100A

adapters

and the

as

shown

on

the

If

you

don't

as

shown

furnished

Figure

have

in

Figure

BNC

3-18.

the

f-f

adapters

42091A

3-19

SHORT

with

.

T

ermination

SHORT

a

BNC T

Connection

T

ermination,

m-f-f adapters

congure

and the

Basic Measurement Examples 3-17

10.

11.

N

SHORT

Press

on

the

system

displays

displayed

Connect

Box)

and

adapters

Figure

N

NN

N

.

the

SHORT

on

the

42102A

the

16048A/D

as shown

3-19. SHORT

Termination

SHORT measurement

message

line

measurement

left

side

of

100



test

in

Figure

.

W

ait

N

SHORT

Resistor

leads

3-20

in progress

until

the

completed

N

.

(or

the

with

the

.

(Alternative)

will

be

4285A

furnished

beeps

.

An

*

will

100

BNC

displayed

and

be

Resistor

f-f

3-18 Basic Measurement Examples

Figure 3-20. 100  Resistor Connection

Note

12.

Press

the

system

the

LOAD

left

side of

13.

Press

displayed

and

When

dierent

correction

N

NN

N

LOAD

.

LOAD

message

measurement

N

NN

LOAD

N

SAVE

.

Saving

in the

displays the

16048A/D

measurement

measurement in

line

.

W

ait

until the

N

completed

.

cable

system message

correction

line

CABLE CORRECTION

test

leads

are

procedure

must

progress

4285A beeps

.

An

*

.

W

ait

page

to

be

redone

will be

data

until

.

used,

will

be displayed

and displays

displayed on

.

will

the

4285A

the

cable

.

on

the

be

beeps

Basic Measurement Examples 3-19

DC

Current

Biased

Measurement

When

the 4285A

and

the 42842C

applied

In

to

this example

following

DUT

: 330

is combined

Bias Current

the

DUT.

,a

330 nH

conditions.

(Agilent

with the

Test

inductor will

nH inductor

P

art

Number 9100-2486)

42841A Bias

Fixture,

be measured

10A (

Current Source



35V)

DC bias

under

the

can

be

Measurement

Equipment

Preparation

Measurement

Conditions

Required

Before

Function

Frequency

T

est

DC

4285A

42841A

42842C

16048A

First

performed

Using

Checking

First of

do

A

CCESSORY

this

Signal

Bias

of

this

area,

:

Level

with

Bias

T

est

all,

performed the

the

1m/2m

the

all,

conrm

,

press

your

Conguring

When

you

use

Current

shown

T

in

est

Figure

:

Option

Current

Leads

cable

T

est

Leads",

Option

4

CA

T

ALOG/SYSTEM

I/F

(#002)

4285A

the

High

the

42841A Bias

Fixture

3-21

L

s

25.2

1

V

1

A

002

Source

T

est

cable correction,

correction

skip to

Installed

that

your

monitor

is

equipped

Current

,

connect

.

-

R

s

MHz

Fixture

procedure

\Checking the

4285A

5

and

is

N

SYSTEM

area.

with

Biased

Current Source

the 42842C

if you

described in

equipped

N

NN

N

CONFIG

When

INSTALLED

Option

Measurement

directly to

have already

Option

with

N

,

002.

with the

the 42841A

\Measurements

Installed".

Option

and

002.

check

is

displayed

the

System

42842C Bias

as

T

o

in

3-20 Basic Measurement Examples

Figure

The

connection

1.

Put

of

2.

Connect

the

3.

Rotate

rocks

the

42841A.

42841A

retaining

.

3-21.

guide

the

42842C

procedure

rods

of

input

terminal

pressing

screws

Bias

is

the

42842C

clockwise

Current

as

follows

42842C

of

the

T

.

into

42842C

toward

in

front

est

the

Fixture

guide

to

the

of the

holes

the

output

42841A.

42842C

Connection

on the

front

terminal

until

of

it

Basic Measurement Examples 3-21

Warning

The

42842C

or

bench.

4285A,

on

it,

tumble

DO

as

over

mounted

DO

NOT

shown

.

NOT

put

below

on

stack

any

.

the

thing

Doing

42841A

on

the 42842C,

this

may

must

be placed

with the

cause the

on a

42842C and

and DO

NOT lean

instrument to

desk

the

The

4285A,

a

bias

Figure

1.

Connect

TO

leads

2.

Connect

4285A

with

the

current

3-22

using

the

UNKNO

.

the

and

the

furnished

Recommended

42841A,

interface

the

UNKNOWN

WN

A

CCESSORY CONTROL

the

BIAS

and

the

cable

following

terminals

of

CONTROL INPUT

interface

and

procedure

the

cable.

Physical

42842C

16048A

of

42842C

Setup

must

be

test

leads

.

the

4285A

using

INTERFA

A

connector

connected

as

shown

and

the

16048A

CE

connector

of the

with

in

test

of

42841A

the

3-22 Basic Measurement Examples

Operation

Figure

Procedure

3-22.

High

Current

1.

Turn

the

4285A

2.

Set

the

4285A

3.

Option

a.

b.

c.

Setup

on

Set

Press

page

Move

and

Press

with

the

002

N

MEAS

4

CA

is

displayed

the CURSOR

NN

N

OFF

N

I

the

4285A measurement

frequency

settings are left at the

Biased

and

to the

A

ccessory

T

ALOG/SYSTEM

N

are

displayed.

N

NN

BIAS

to

42841A

DISPLA

to

Measurement

42841A

I

BIAS

ON.

mode

Control Interface

N

SYSTEM

5

and

to the

perform

and the

CONFIG

a

DC

42842C.

conditions by

Y

page

.

25.2

MHz and

default settings

Setup

to

control

.

N

NN

N

eld.

current

the

.)

the

N

CONFIG

N

NN

I

biased

modifying the

DC

bias

N

.

NN

N

BIAS

level

N

42841A

SY

STEM

N

NN

N

Q

,

LCR

measurement

to

via

the

CONFIG

NN

N

ADAPTER

elds

1A.

(Other

N

,

a. Move the CURSOR to the

frequency,

b. Press

message line, and the softkey labels change to the available

units

on the

5,4

4

2

NNNNNNNNNN

N

kHz

FREQ

1.0000MHz

5

,and

5,4

.

5

NNNNNNNNNN

N

MHz

and

eld.

c. Move the CURSOR to the

0.00 mA

d. Press

the softkey lables change to the available units

and

will be displayed in this eld.

415.1

will be displayed on the system message line, and

NNNNN

A

.Press

NNNNN

A.1A

FREQ

eld. The current measurement

, will be displayed in this eld.

5.25.2

4

2

. Press

is displayed on the system

NNNNNNNNNN

N

MHz.25.2000MHz

BIAS

eld. The current DC bias level,

will be displayed on the

will be displayed

NNNNNNNN

mV

,

BIAS

Basic Measurement Examples 3-23

NNNNN

V

,

eld.

NNNNNNNN

A,

NNNNNNNN

mA

,

4.

Perform

OPEN/SHORT correction.

OPEN/SHORT

42842C's

a.

Press

will

b.

Leave

residual impedance

4

MEAS

be

displayed.

the

correction is

5

SETUP

42842C

and

OPEN

required to

and stray

NN

N

CORRECTION

as

shown

compensate for

admittance.

NN

N

.

The

CORRECTION

in

Figure 3-23

the

page

c.

Move

the

N

NN

N

MEAS

Press

N

MEAS

d.

measurement.

OPEN

measurement

message

Press

N

ON

e.

Figure

N

OPEN

NN

N

line

N

CURSOR

N

to

N

OPEN

.

are

N

set

3-23.

to

displayed.

N

NN

N

to

W

ait

the

Open

Condition

the

OPEN

perform

the

approximetory

completed

OPEN

will

correction

eld.

OPEN

50

be

of

the

N

OFF

ON

,

correction

seconds

displayed

function

N

until

to ON.

N

42842C

,

and

data

the

on

the

message

system

f. Connect furnished shorting bar to the 42842C to set up the

SHORT condition as shown in Figure 3-24.

3-24 Basic Measurement Examples

g.

Move

N

h.

Press

measurement.

SHORT

message

i.

Press

5.

Connect

N

NN

MEAS

Figure

the

CURSOR

N

SHORT

NN

N

MEAS

measurement

line

N

ON

to

the

DUT

3-24.

N

are

N

NN

SHORT

W

.

set

the

to

Connecting

to

the

SHORT

displayed.

N

to

perform

ait

approximetory

completed

SHORT

the

test

xture

the

Furnished

eld.

the

SHORT

50

will

correction

.

N

ON

seconds

be

displayed

function

Shorting

N

OFF

,

correction

until

to

N

,

and

on

ON.

data

the

Bar

message

system

Connect the

the test

DUT

xture

to

the

protective

42842C

cover

measurement

.

terminals

and

6. Enable the DC bias output.

5

Press

4

DC BIAS

The DC bias on/o LED indicators of

will come ON simultaneously

7. P

erform the measurement.

Press

4

DISP F

on the 4285A front panel

.

5

ORMAT

. Internal trigger starts and continuously

to turn the DC bias ON.

the 4285A and the 42841A

repeats measurement. The measured Lsand Rsvalues of the

inductor are displayed in large characters as shown in Figure 3-25.

Basic Measurement Examples 3-25

close

FUNC :

Ls-Rs

FREQ :25.2000MHz

LEVEL:* 1.00

L

s

:

R

s

:

Vm

:

809.8mV

V

2

9

0

.

CORR:OPEN,SHORT

6

8

RANGE:

BIAS

INTEG:

.

4

2

9

Im

SYS

MENU

AUTO

:

1.000

A

MED

6

n

H

0

1

:

15.73mA

CBL:1m

Figure

8.

Disable

When

the

pressing

bias

on/o

simultaneously

3-25.

F

DC

bias

output.

measurement

BIAS

LED

5

indicators

4

DC

.

errite-Cored

is

nished,

to

prevent

of

Inductor

turn

the

DUT

the 4285A

Measurement

the

DC

from

overheating.

and the

Results

bias

OFF

by

The

42841A will

go

DC

o

3-26 Basic Measurement Examples

Precision

Q

Measurement

This

section describes

inductor

DUT

.It

: 10

will be

(Agilent

an example

measured under



H

ferrite-cored chip

Part

Number 9140-1238)

of measuring

the following

inductor

a10



H

conditions.

ferrite-cored

Measurement

Conditions

Equipment

Preparation

Measurement

Congure

Precision

measurement

Required

Before

the

System

Q

Connection

Function

Frequency

Oscillator

4285A

with

42851A

10503A

or

equivalents

m)

F

or

example

Checking

First

of

all, conrm

T

o

do

this

the

A

CCESSORY

displayed

The

4285A

with

a

interface

using

the

1.

Connect

the TO

coaxial cables

:

Level

:

Option

with

Option

coaxial

cable

(50

,

the

Option

,

press

4

CA

I/F

in

this

area,

and

the

cable

following

the

H

cur

UNKNOWN

.

DIRECT

Q

-

L

2.52

MHz

150

mV

002

001

(2

ea.)

coaxial

16048A/D

cable

test

,

leads

Installed

that your

T

ALOG/SYSTEM

(#002)

your

4285A

5

monitor

4285A

and

42851A Precision

and 16048A

procedure

and

terminals

.

of

H

the

p

ot

of

BNC

can

is

equipped

N

SYSTEM

area.

is

equipped

Q

A

test

leads

4285A

the

42851A

male

connectors

also

N

NN

N

When

with

dapter

as

shown

UNKNOWN

using

be

used.

with

N

CONFIG

the

INSTALLED

the Option

must

the

(2

Option

N

NN

,

and

be

connected

in

Figure

terminals

10503A

ea.),

002.

check

002.



is

3-26

and

BNC

2

2. Connect

4285A

interface

the

and

A

CCESSORY

the

cable

CONTROL

furnished

CONTROL

INPUT

to

the

connector

42851A.

INTERF

of

A

CE

connector

the

42851A

of

with

Basic Measurement Examples 3-27

the

Operation

Procedure

Figure

1.

2.

3.

4.

3-26.

Precision

Turn

the

T

o

perform

interface

a.

Press

page

b.

Move

and

c.

Press

the

resonant measuring

Setup

the

Set

the

MEAS

FREQ

settings

4285A

the Precision

to

the

4

CA

T

ALOG/SYSTEM

will

be

the

CURSOR

N

OFF

are

N

NN

N

Q ADAPTER

4285A

DISPLA

to

2.52

.)

Q

Measurement

and

the

Q

AD

APTER

displayed

to

displayed.

N

NN

to perform

measurement

Y

page

MHz.

Setup

42851A

ON.

Q measurement,

mode.

NN

N

SYSTEM

5

and

the

CONFIG

a

precision

method.

conditions

.

(Other

functions

N

eld.

set

N

NN

N

CONFIG

N

I

Q

by

are

left

the

accessory

N

.

SY

STEM

N

BIAS

N

Q

,

measurement

lling

in

the

as

the

control

CONFIG

N

ADAPTER

using

elds

default

N

NN

N

,

on

3-28 Basic Measurement Examples

a. Move the

frequency,

b. Press

message line

units

on

the

5. P

erform SHORT correction.

CURSOR to the

1.0000

5,4

4

2

N

NNNNNNNNNN

kHz

FREQ

5

.

, and the

and

eld.

5

,and

N

NNNNNNNNNN

MHz

FREQ

MHz

, will be displayed in this eld.

5.2.52

4

2

softkey labels change to the available

. Press

eld. The default measurement

will

be displayed on the system

N

NNNNNNNNNN

MHz.2.5200MHz

will be displayed

SHORT correction is required to compensate for the residuals of

the 42851A internal circuit and the BNC coaxial cables. Connect

the shorting bar furnished to the 42851A between HIGH and LOW

terminals of the 42851A as shown in Figure 3-27.

a.

Press

will be

b.

Move

N

MEAS

c.

Press

measurement.

displayed

seconds

be

d.

Press

6.

Connect the

and

LO

shown

4

MEAS

displayed.

the

N

NN

SHORT

N

NN

N

MEAS

displayed

N

NN

ON

W

binding post

in

Figure

SETUP

CURSOR

N

SHORT

in

the

until

on

N

to

set

SMD T

3-27.

Connecting

N

NN

CORRECTION

5

and

to

the

SHORT

are

displayed.

N

NN

N

to

perform

SHORT

the

measurement

system

message

the

system

the

SHORT

est Fixture

SHORT

message

correction

(42851A Option

measurement terminal

3-28.

NN

N

eld.

the

SHORT

line

measurement

a

Shorting

N

.

The

NN

N

ON

in

progress

.

W

ait

line

.

function

Bar

Q CORRECTION

NN

N

OFF

,

correction

and

will

data

be

approximetory

completed

to

ON.

001)

to

the

of the

42851A

page

20

will

HIGH

as

Note

Residual

can be

SETUP

impedance

reduced by

page

.

F

Fixture, refer to

42851-90000).

and

stray

capacitance of

or

details

using the

OFFSET L,C,R

of the

oset

values

42851A Operation Manual

the SMD

function

for

(Agilent

Test

on

the

SMD

Part Number

the

T

Fixture

Q

MEAS

est

Basic Measurement Examples 3-29

7.

Connect

Figure

the

DUT

3-28.

to

the

Connecting

SMD

T

est

the

SMD

Fixture

as

T

est

shown

Fixture

in

Figure

3-29

.

3-30 Basic Measurement Examples

Figure 3-29. Connecting DUT to the SMD T

8. P

erform the measurement.

Press

4

DISP FORMAT

5

and

4

TRIGGER

5

. The 42851A will make a small

est Fixture

buzzing sound during the automatic tuning operation, and Q and

L values of the chip inductor are displayed in large characters

as shown in Figure 3-30. If the 42851A doesn't stop the tuning

operation, try changing the measurement frequency, or check

to see if the DUT is properly connected to the

HIGH

and

terminals, or check the cable connection.

LOW

If

the 4285A

the

TRIGger mode

<Q

FUNC:

FREQ:

TUNE:

does not

display the

is

set

to

MEAS DISPLAY>

DIRECT RANGE:

2.5200MHz BIAS

AUTO

Q

:

L

:

1

MANual.

AVG

3

6

0

.

1

measurement

SYS MENU

Q-L

: 150

:

.

4

1

4

0

u

H

1

data,

mV

check

that

TUNING

CORRECT

Figure

C:

3-30.

392.9pF

:

SHORT

Inductor

V:

Precise

114.9mV

Q

Measurement

Results

Basic Measurement Examples 3-31

4

Instrument

Memory

Function

System

Memory

Feature

This chapter

and

Memory Function

Automatic

List Sweep

Printing

The memory

types.

System

Internal

This

LCR

Control

Tutorial

options

gives tutorials

of

the

4285A

Level

Control

function

of

the

on

Precision

Function

memory

non-volatile

memory

meters

stores control

. Such

settings

OPEN,

(OPEN

LO

AD

correction

SHORT

and

frequencies

settings

Beeper

GPIB

T

alk

A

ON/OFF

address

Only

ccessory

SHORT

.)

ON/OFF state

I/F

memory/external

settings

as:

on

the

CORRECTION

,

LO

AD

correction

,

LO

AD

correction

reference

on

the

SY

state

Conguration (I

Handler I/F ON/OFF state

Scanner

I/F ON/OFF state

how

4285A

data

STEM

to

use

LCR

Meter

consists

memory

which

page

of

ON/OFF

for

all

data

at

and

CONFIG

BIAS, Q

the

following

.

of

the

depend

.

state

test

frequencies

from

FREQ1

specied

actual

page

data

.

ADAPTER,

the

following

card

upon

the

to

frequencies

at

spcied

or OFF)

features

two

individual

.

FREQ7.

,

and

This memory

is non-volatile and is automatically updated when the

above settings are changed.

Instrument Feature Tutorial 4-1

Internal Non-V

Memory/External

Memory

olatile

Card

The

4285A allows

from/to

card

measurement

the internal

(non-volatile). The

mode,

you to

load/store the

non-volatile memory

4285A stores

and display

format.

instrument control

or an

external memory

the following

control settings

settings

,

Note

Display

Comment

(Same

Control

4

DC

BIAS

non-volatile

from

the

The

Up

to

memory

Records are

internal

9.

When

numbers

When

the

control

settings

(Normal

conguration mode

page format

to the

settings on

setting on

settings on

5

ON/OFF

the

internal

DC

bias

setups

MEMORY

above are

10

dierent

,

and

non-volatile

the record

from

the

4285A

settings

stored

LCR,

Line

comment displayed

memory

is

automatically

another

identied by

10 to

is

card

stored

in

I

Bias

when the

the

MEAS

the

LIMIT

the

BIN

the

LIST

condition

.

non-volatile

records

memory,

is stored

19 can

turned on

slot,

record

,

or

,

the

If

the

stored

are

10

records

number.

the

in

record

number

Precision

power-on

on

be

record stored

in the

SETUP

TABLE

COUNT DISPLA

SWEEP SETUP

the

instrument

memory

turned

into

one

available

are

the record

in

the

set.

with

4285A's

number

10

Q)

page

front

control

or

o

for

record,

on

available

When a

external

the

memory

A

uto

or

the

is

dierent

default

panel

CA

T

ALOG

Y

page

cannot

settings

the

external

the

operator's

an

object

the internal

on the

record

number

memory

card

Load

function

10.

If

there

stored

from

settings

page)

be

stored

are

loaded

memory

safety.

in

memory

non-volatile

memory card.

is

stored

can

inserted

conguration

will

be

card,

are

the

be

in

set

from

record

will

no

current

used.

in

card,

the

into

load

control

mode

a

.

0

the

to

4-2 Instrument Feature Tutorial

P

erform

1.

2.

3.

4. Enter the record number using the numeric keypad and

Perform the following steps to load the control settings

1. Move the CURSOR to the

2. If you want to load the data from the memory card, insert

3.

4. Enter the record number you want to load using the numeric entry

the

following

Move

the

CURSOR

If

you

want

to

card

in

the

MEMORY

N

Press

displayed

store the current control settings

be displayed on the system message line while writing.

memory card into the MEMORY card slot.

Press

displayed on the system message line.

keys and

STORE

NNNNNNNNNNNNNN

LOAD

.

on the

. The message

4

ENTER

store

The

system

5

.

steps

to

the

data

card

message

store

the

control

SY

S

MENU

to

slot

until

Enter

SYSMENU

Enter record number to LOAD

eld.

the

memory

it

locks

record

line

.

. The message

eld.

settings

card,

into

number

Storing

insert

place

to

from memory

to

memory

a

.

STORE

4

ENTER

...

memory

will

5

will

the

will be

.

be

to

.

A

utomatic

Control

Level

Function

ALC

Theory

Operation

of

T

est signal

under

current.

can

be obtained

opened

varies

the

DUT's impedance

T

o avoid

Control

signal

computer

The

ALC

level is

test (

dut

However

or shorted.

depending on

this problem,

(

alc

level applied

.

operation

level monitor

avery

).

The 4285A

,

the specied

when the

So the

the ratio

) function.

across the

is

function as

important factor

can specify

voltage value

oscillator output

actual test

of the

.

the

4285A

ALC

function

DUT

achieved using

shown in

when evaluating

the test

terminal (H

signal level

oscillator output

employs

the

digitally

without

the

feedback control

Figure 4-1

.

signal voltage

and current

terminal)

c

applied to

impedance

A

utomatic

controls

need

the

for

loop with

the device

value

the

Level

test

an

external

or

is

DUT

and

the

The

feedback

Figure

operation

4-1.

F

eedback

performs

a

Control

level

measurement/OSC

Circuit

level

adjustment 2 to 6 times per measurement. (The required time

depends on the device being tested. The more non-linear the device

is, the greater the time required.) When the ALC function can't

regulate the level within 6 output level measurement/adjustment

cycles (when a device has non-linear characteristics

, the ALC function

may stop before the 6 th output level measurement/adjustment

cycle if the dierenc between the selected and actual values is too

great), the ALC function stops

to regulate

will be displayed, and sets the oscillator level equal to

, and a warning message

ALC unable

setting value you select, open-loop, the output level will be the same

as when ALC is set to OFF.

Instrument Feature Tutorial 4-3

ALC Measurement

Time

The

required time

following

(meas

. time

Where

,

formula.

(SHORT) +

for the

the ALC

approx. 115

operation is

msec.)

2

calculated using

n

the

ALC

Voltage/Current

Setting

Operation

of

the

ALC

Range

Note

Procedure

Function

n:

When

limited

V

Current

If the

oltage

Actual

(2



n

the

ALC

as

follows

Level:

test signal

ALC function

and

the

entered

On

the

other hand,

when

the

LEVEL

setting

available range

P

erform

ON

1.

2.

or

Press

Move

the

following steps

OFF

.

4

MEAS

the

CURSOR

displayed.

N

ON

N

OFF

NN

3.

Press

NN

N

OFF

NN

ON

N

to

N

to

set

measurement/adjustment cycle



6)

function

is

active

,

the

test

signal

.

to

rms

the

is

set

ALC

is

1V

to

ALC

as

out

rms

20

mA

value

function

a

normal

function

of

the

changed

rms

exceeds

is

test

has

ALC's available

to

be

10

mV

100



A

level setting

is

active

,

value

if

the

setting

is

automatically

.

to set

the

automatic

5

to

SETUP

set the

the

automatic

display

to

the

automatic

ALC

level

the

eld.

level

control

MEAS

The

control

SETUP

function

level setting

the

above

limits

automatically

signal

level.

been

already

range,

within

following

level

page

the ALC's

control

.

softkeys

function

OFF

.

set

turned

to

ON.

range is

while

to

OFF

on

the

function

will

Press

the

be

4-4 Instrument Feature Tutorial

List

Sweep

Function

Structure

SWEEP

of

LIST

function

Impedance

is

very common.

measurement

function.

parameter

The

following parameters

T

est

T

est signal

DC

1

:

Option 001

2

:

Option 002

characteristics evaluation

eciency

The LIST

points automatically

frequency

level (V

bias level

DC bias

Accessory

required.

The

LIST SWEEP

the

measurement results

comparison

The

LIST

results

SWEEP

To

simplify the

,

the 4285A

SWEEP function

can be

oltage

1

(Voltage

or

is required

control interface

function

can

be

output

function

DISPLA

SETUP

Y

page

these evaluations

is equipped

without using

used for

or

Current)

Current

can

be

consists

2

sweep

compared

to

the

of

(under

4

by varying

allows you

the LIST

)

,

42841A,

parameters

to

handler

the

following

4

DISPLA

YF

MEAS

SETUP

the test

and to

with a

to measure

an external

SWEEP

and

listed

specied

interface

two

5

ORMA

T

5

)

condition

increase

LIST SWEEP

up to

controller.

function.

42842C

above

limits

.

These

are

and

.

pages

.

)

10

Figure 4-2. Structure of LIST SWEEP Function

LIST SWEEP

This page is used

DISPLAY page

to perform measurement and to display the

measurement and comparison results.

LIST SWEEP SETUP page

This page is used to set the following parameters.

Sweep mode (

MODE

) for SEQuencial or STEP

Instrument Feature Tutorial 4-5

Sweep parameter

BIAS[A]

Sweep parameter

Limit parameter

Limit V

)

alues

(

LO

(

FREQ[Hz]

values

(

LMT

)

W

,

HIGH

for

)

,

data

for

LEVEL[V]

A,

data

LOW

and

,

LEVEL[A]

B

,

or

none

HIGH

or

,

BIAS[V]

.

either

,

or

LIST

Measurement

SWEEP

Procedure

Any other

MEAS

This

measurement

FUNCTION

SWEEP

LIMIT

Other

1.

Press

page

2.

Move

eld.

3.

Press

4.

Press

5.

Move

6.

Press

is

measurement condition

SETUP

example

MODE

P

ARAMETER

POINTS

P

ARAMETER

Settings

4

CA

will now

the

N

I

N

OFF

4

MEAS

the

N

more

displayed.

page

.

shows

conditions

: Z{

T

ALOG/SYSTEM

N

BIAS

N

NN

N

an

:

be displayed.

CURSOR

N

to

SETUP

N

NN

X/6

N

Q

,

perform

N

CURSOR

N

measurement

.

:

5

and

to

the

N

the

MEAS

the

it

A

N

NN

N

normal LCR

FUNC

is

N

ADAPTER

5

.

to

until

N

changed

is

as

the

example



sequential

frequency

1

MHz,

MHz

o

Default

N

SYSTEM CONFIG

CCESSORY

N

,

and

SETUP

N

OFF

eld.

[Hz]

2

MHz,

setting

N

CONTROL

N

will

measurement.

page

N

more

to

same

under

3

N

be

will

N

to

the

MHz,

N

.

SY

displayed.

be

displayed.

N

NN

N

5/6

settings

the

following

.

STEM CONFIG

INTERF

and

,

N

Z-

9

N

MHz,

A

N



on

CE

N

NN

N

(deg)

N

the

10

N

Note

4-6 Instrument Feature Tutorial

Any

other

measurement

page

are set

7.

Press

function.

8.

Press

SETUP

9. Move the CURSOR to the

be displayed.

NNNNNNNNNNN

NNNNNNNNNNNNN

The 4285A is equipped with two types of sweep modes

mode (

mode, the 4285A measures all sweep points each time it is

triggered as shown in Figure 4-3.

SEQ

STEP

on the

N

NN

N

Z-

4

MEAS

page

N

NNNNNNNNNNN

SEQ

N



(deg)

SETUP

.

) and step mode (

conditions

MEAS SETUP

N

to

select the

N

NN

LIST

5

and

page and

NN

N

SETUP

MODE

NNNNNNNNNNNNNN

STEP

set

on

the

LIST

SWEEP

the

CORRECTION

Z-



(degree) measurement

N

NN

to

display the

eld. The following softkeys will

). In the case of the sequential

SETUP

page

LIST SWEEP

, sequential

.

In

the case

each

time

of

it

is

Figure

the

step

triggered

4-3.

mode

as

List

,

the

shown

Sweep

4285A

in

Figure

Modes

increments

4-3

.

a

sweep

point

10. Move

the CURSOR

softkeys will

to

the

be displayed.

sweep

parameter

eld.

FREQ [Hz]

LEVEL

BIAS

Press

parameter

11.

Move

12.

Press

13.

Press

softkeys will

N

LIMIT

This

parameter

pressed, the CURSOR moves to the

N

NNNNNNNNNNNNNNNNNNNNNNNNN

N

FREQ

the

4

1

N

MHz

N

NN

key is

[V]

[A]

[V]

[A]

N

NN

N

.

CURSOR

5

and

N

NN

.

NN

N

DATA

N

[Hz]

The

N

to choose

to

the

unit

softkeys

CURSOR

be displayed.

N

NN

N

A

used to

of

set

the

measurement

NNNNNNNNNNNN

sweep

moves

the

frequency

parameter

will

to

high/low

function.

be

displayed

the

LMT

limit

LOW

as

the

eld.

automatically

eld,

for

the

When this

eld.

LIMIT DATA B

This

key is used to set the high/low limit for the secondary

parameter of

pressed, the

N

NNNNNNNNNN

the measurement function. When this softkey is

CURSOR moves to the

LOW

eld.

OFF

This softkey is used to set the list sweep measurement's limit

function to OFF for a sweep point. When this softkey is

pressed, the CURSOR moves to the next sweep point eld.

The

following

sweep

and following

primary

softkey

.

is

Press the keys as follows.

N

NNNNNNNNNN

OFF

NNNNNNNNNNN

MHz

,

NNNNNNNNNNN

OFF

425

,

Instrument Feature Tutorial 4-7

435

445

455

465

475

485

495

415

Now

14.

Press

measurement

be

displayed

,

N

MHz

N

MHz

N

MHz

N

MHz

NN

MHz

NN

MHz

N

MHz

4

the

4

NN

,

NN

N

,

N

,

N

NN

N

,

NN

N

,

N

,

N

,

N

MHz

5

,

0

LIST

DISPLA

N

NN

OFF

N

NN

OFF

N

OFF

N

OFF

NN

OFF

NN

OFF

N

OFF

N

YF

NN

N

NN

N

NN

in

NN

N

NN

N

NN

N

OFF

,

SWEEP

ORMAT

results

tabular

N

NN

.

setting

5

and

Sweep

format

is

complete

N

NN

N

LIST

N

SWEEP

points

and updated

.

N

NN

to

display the

and measurement

continously.

results will

4-8 Instrument Feature Tutorial

Print

Function

Print

Mode

The

4285A can

the

need for

must

be

N

NN

N

T

ON,

The

NN

on

N

and comparison

N

pages

N

SYSTEM

o

set

the

ALK

ONL

talk

4285A

N

NN

PRINT

N

NN

PRINT

NN

N

PRINT DISP

the

N

NN

N

PRINT

N

PRINT

.

an external

set

to the

N

NN

N

CONFIG

4285A

Y

eld,

(TLK)

has

NN

N

DISP

NN

N

DATA

N

NN

N

dumps the

LCD

panel

N

DATA

continuously

N

NN

N

DISP

,

T

able

4-1.

MEAS

BIN

LIST

MEAS

CORRECTION

LIMIT

LIST SWEEP

CA

SYSTEM

CABLE

SELF TEST

Q MEAS DISPLA

QBINNo

Q BIN COUNT DISPLA

Q LIST SWEEP

Q MEAS SETUP

Q CORRECTION

Q LIMIT TABLE SETUP

Q LIST SWEEP SETUP

DISPLA

No

COUNT

SWEEP

SETUP

T

TALOG

directly print

computer.

talk only

N

to

display

to

the

talk-only mode

and

press

GPIB

state

the

following

N

NN

information

except

result (if

N

PRINT

N

PRINT

P

age

.

DISPLA

ABLE

CONFIG

CORRECTION

. DISPLAY

N

NN

N

DATA

N

Name

1

Y

1

Y

DISPLA

1

SETUP

Y

DISPLAY

2

for

required) to

N

2

out the

mode.

SY

STEM

N

ON

.

indicator

two

softkey

outputs

N

capabilities

N

NN

N

DISP

and

1

Y

1

Y

1

2

Y

2

data on

Before printing,

Press

4

CA

T

ALOG/SYSTEM

CONFIG

, move

When

on

the

print

modes

to

labels

the

measurement

the

N

PRINT

N

NN

PRINT

the

T

ALK

front

the

printer

.

printer

are

available

N

NN

DATA

N

DISP

p p

p

p p

p

p p

p

p p

p

an GPIB

page

the CURSOR

.

NN

N

printer without

the 4285A

.

ONL

Y

panel

is

currently

result,

.

in

N

A

vailability

N

NN

PRINT

5

eld

lit.

the

N

DATA

p

and

to the

N

is

set to

displayed

status

,

following

N

1

Normal LCR measurement mode or high current DC biased

measurement mode only.

2

Precision Q measurement mode only.

Instrument Feature Tutorial 4-9

Printer Requirements

Printer

Troubleshooting

Note

T

o

correctly

following.

GPIB

Interface

Listen

F

or example

these

requirements.

If

you

encounter

1.

Look

are

explained

(A

gilent

2.

Make

4285A,

3.

Make

Some

printers

on.

Therefore

the

printer

4.

Make

(TLK)

print the

Always (only)

for

, 2225

an

ThinkJet Printer

a

printing

error

in

Appendix

part number

sure the

and

sure the

sure

GPIB

printer is

loaded with

printer is

read

if

you

o

for

the

4285A

status

the

several

data, the

state

problem,

message

04285-90000)

plugged in,

paper.

set to

switch

change

seconds

is

in

indicator

printer must

(with GPIB

on the

B

LCD panel.

of

the

the listen

settings

any

of

the

and

the

talk

on

the

be capable

check the

4285A

.

turned on,

always

only

when

switch

back

on

only

mode

front

panel

of the

interface) matches

following.

(All error

messages

operation manual

connected

state

they

settings

before

.

Check that

is

lit.

,

printing.

.

are

you

to

rst

must

the talk

the

turned

turn

5.

Replace

6.

Substitute

the

a

GPIB

cable

dierent

.

printer

.

4-10 Instrument Feature Tutorial

5

What's

Next?

Now that

operating,

operation.

If you

you have

want

and

Y

our

to

you

perform

bridge measuring

(Agilent P

information,

If

you

method

(Agilent P

information,

If

you

combining

MANU

procedure

modied

the

want

AL

error

art

Number

specications

and

to

perform

with

the

art Number

specications

and

to

perform

with

(Agilent

provides

combining

GPIB

commands

and

system

the

instrument

will

also

depends

normal

method),

04285-90010).

,

in

depth

reference

precision

42851A,

refer

42851-90010). This

,

in

depth

reference

the

42841A

P

art

Number

P

art

Number

general

the

4285A

.

information,

The

messages

be

familiar

LCR

refer

to

front

panel

Q

to

42851A

front

panel

high

DC

and

42842C,

42841-90010)

04285-90010).

with

4285A

.

unpacked,

with

the

on

your

needs

measurement

4285A

This

OPERA

manual

operation,

information.

measurement

OPERA

manual

operation,

information.

current

biased

refer

or

specications

the

42841A,

OPERA

TION

inspected

4285A's

.

(auto

TION

provides

GPIB

by

the

TION

provides

GPIB

measurement

to

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What's Next? 5-1

Agilent 4285A Getting Started Guide

Specifications and Main Features

Frequently Asked Questions

User Manual