Hewlett-P Parameter Analyzer User Manual

Semiconductor Parameter Analyzer

User's Task Guide



Company 1993 - 1995

Reproduction, adaptation, or

translation without prior written

permission is prohibited, except as

allowed under the copyright laws.

HP Part Number

04155-90010

Printing History

First edition, February 1994

Second edition, December 1994

Third edition, November 1995

Printed in Japan



MS-DOS

is U.S. registered

trademark of Microsoft

Corporation.

Lotus 1-2-3 is U.S. registered

trademark of Lotus Development

Corporation.

PageMaker is a trademark of

Aldus Corporation.

Product Warranty

This Hewlett-Packard product is warranted against

defects in material and workmanship for a period of

one year from date of shipment. During the warranty

period, Hewlett-Packard will, at its option, either repair

or replace products which prove to be defective.

For warranty service or repair, this product must be

returned to a service facility designated by

Hewlett-Packard. Buyer shall prepay shipping charges

to Hewlett-Packard and Hewlett-Packard shall pay

shipping charges to return the product to Buyer

However, Buyer shall pay all shipping charges, duties,

and taxes for products returned to Hewlett-Packard

from another country.

Hewlett-Packard warrants that its software and

rmware designated by Hewlett-Packard for use with

an instrument will execute its programming

instructions when properly installed on that instrument.

Hewlett-Packard does not warrant that the operation

of the instrument, or software, or rmware will be

uninterrupted or error free.

Limitation of Warranty

The foregoing warranty shall not apply to defects

resulting from improper or inadequate maintenance by

Buyer, Buyer-supplied software or interfacing,

unauthorized modications or misuse, operation outside

of the environment specications for the products, or

improper site preparation or maintenance.

No other warranty is expressed or implied.

Hewlett-Packard specically disclaims the implied

warranties of merchantability and tness for a

particular purpose.

Exclusive Remedies

The remedies provided herein are the Buyer's sole and

exclusive remedies. Hewlett-Packard shall not be liable

for any direct, indirect, special, incidental, or

consequential damages, whether based on contract,

tort, or any other legal theory.

Assistance

Product maintenance agreements and other customer

assistance agreements are available for

Hewlett-Packard products.

For any assistance, contact your nearest

Hewlett-Packard Sales Oce.

Certication

Yokogawa-Hewlett-Packard, Ltd.

9-1, Takakura-Cho, Hachioji-Shi,

Tokyo, 192 Japan

Hewlett-Packard Company certies that this product

met its published specications at the time of shipment

[from the factory]. Hewlett-Packard further certies

that its calibration measurements are traceable to the

National Institute of Standards and Technology

(

NIST

), to the extent allowed by the Institute's

calibration facility, and to the calibration facilities of

other International Standards Organization members.

Safety Summary

The following general safety precautions must be observed during all

phases of operation, service, and repair of this instrument. Failure to

comply with these precautions or with specic warnings elsewhere in

this manual may impair the protection provided by the equipment. In

addition it violates safety standards of design, manufacture, and intended

use of the instrument. Hewlett-Packard Company assumes no liability for

customer's failure to comply with these requirements.

NOTE

HP 4155A/4156A comply with INSTALLATION CATEGORY II and

POLLUTION DEGREE 2 dened in IEC 1010-1.

HP 4155A/4156A are INDOOR USE products.



GROUND THE INSTRUMENT



DO NOT SUBSTITUTE PARTS OR MODIFY INSTRUMENT

Because of the danger of introducing additional hazards, do not

install substitute parts or perform any unauthorized modication to

the instrument. Return the instrument to a Hewlett-Packard Sales

and Service Oce for services and repair to ensure that safety

features are maintained.



DANGEROUS PROCEDURE WARNINGS

Warnings, such as example below, precede potentially dangerous

procedures throughout this manual. Instructions contained in the

warnings must be followed.

WARNING

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

instrument. Use extreme caution when handling, testing, and adjusting.

To minimize shock hazard, the instrument chassis and cabinet must

be connected to an electrical ground. The power terminal and the

power cable must meet International Electrotechnical Commission

(IEC) safety standards.



DO NOT OPERATE IN AN EXPLOSIVE ATMOSPHERE

Do not operate the instrument in the presence of ammable gases

or fumes. Operation of any electrical instrument in such an

environment constitutes a denite safety hazard.



KEEP AWAY FROM LIVE CIRCUITS

Operation personnel must not remove instrument covers. Component

replacement and internal adjustments must be made b

y qualied

maintenance personnel. Do not replace components with power cable

connected. Under certain conditions, dangerous voltages may exist

even with the power cable removed. To avoid injuries, always

disconnect power and discharge circuits before touching them.



DO NOT SERVICE OR ADJUSTALONE

Do not attempt internal service or adjustment unless another person,

capable of rendering rst aid and resuscitation, is present.

Safety Symbols

The general denitions of safety symbols used on equipment or in

manuals are listed below.

Instruction manual symbol: the product will be marked

with this symbol when it is necessary for the user to

refer to the instruction manual in order to protect

against damage to the instrument.

Indicates dangerous voltage (terminals fed from the

interior by voltage exceeding 1000 volts must be so

marked).

Indicates earth (ground) terminal.

Frame or chassis terminal. A connection to the frame

(chassis) of the equipment which normally includes all

exposed metal structures.

Alternating current.

Direct current.

ON (Supply).

OFF (Supply).

Herstellerbescheinigung

GEAUSCHEMISSION

WARNING

CAUTION

The warning sign denotes a hazard. It calls attention to

a procedure, practice, condition or the like, which, if

not correctly performed or adhered to, could result in

injury or death to personnel.

The caution sign denotes a hazard. It calls attention to

an operating procedure, practice, condition or the like,

which, if not correctly performed or adhered to, could

result in damage to or destruction of part or all of the

product.

Lpa<70 dB

am Arbeitsplatz

normaler Betrieb

nach DIN 45635 T.19

Manufacturer's Declaration

ACOUSTIC NOISE EMISSION

Lpa<70 dB

operator position

normal operation

per ISO 7779

Introduction

HP 4155A/4156A is an electronic instrument for measuring and analyzing the

characteristics of semiconductor devices. This one instrument allows you to

perform

both

measurement

and

analysis of measurement results.

highly accurate measurements.

HP 4155A/4156A has four highly accurate source/monitor units (SMUs), two

voltage source units (VSUs), and two voltage measurement units (VMUs).

The HP 4156A is designed for Kelvin connections and has high-resolution

SMUs (HRSMUs), so HP 4156A is especially suited for low resistance and low

current measurements.You can measure voltage values with a resolution of

0.2V by using the dierential measurement mode of VMUs.

reliability testing.

HP 4155A/4156A can perform

stress

testing. That is, can force a specied dc

voltage or current for the specied duration.

Also, you can force ac stress by using pulse generator units (PGUs), which are

installed in HP 41501A SMU/Pulse Generator Expander. The HP 41501A is

attached to HP 4155A or HP 4156A, and can be equipped with a ground unit

(GNDU), high power SMU (HPSMU), two medium power SMUs (MPSMUs), or

two PGUs.

data storing and printing.

HP 4155A/4156A can print and store, in addition to performing measurement

and analysis.You can store measurement setup information, measurement

data, and instrument setting information on a 3.5-inch diskette inserted into

the disk drive of HP 4155A/4156A. And you can print the setting information

and measurement results on a plotter or printer that is connected to

HP 4155A/4156A.

remote control.

HP 4155A/4156A can be controlled by an external controller via HP-IB by

using remote control commands. These commands are based on Standard

Commands for Programmable Instruments (SCPI), so you can easily develop

measurement programs.

HP 4155A/4156A has internal HP Instrument BASIC, so you can develop and

execute measurement programs by using the HP 4155A/4156A only, without

using an external controller.

In This Manual

This manual gives step-by-step instructions for performing common HP

4155A/4156A tasks, and consists of the following chapters:

NOTE

If you have never used the HP 4155A/4156A or HP 4145A/B, read the HP 4155A/4156A

Guide

rst before reading this manual. The

Quick Start Guide

gives you an overview of the product

Quick Start

and a brief introduction, which is a good rst step for beginners.



Introducing the HP 4155A/4156A

This chapter is an overview of the HP 4155A/4156A.



Installation

This chapter describes how to install HP 4155A/4156A, accessories

, and

peripherals.



Making a Measurement

This chapter describes device connections, making a sweep measurement,

knob sweep measurement, and sampling measurement, and forcing stress.



Analyzing Measurement Results

This chapter describes how to analyze measurement results manually and

automatically.



Filer and Hardcopy

This chapter describes how to print or plot out measurement results or

measurement setups.



If You Have a Problem

This chapter provides problem-solving information that you may encounter.



Manual Changes Depending on ROM Version



Index

Other Manuals.

Also the following manuals about HP 4155A/4156A are available:



User's Dictionary Reference

This manual is a dictionary reference for all parts and functions of the HP

4155A/4156A, and consists of the following chapters:

Measurement Units

Measurement Mode

Measurement Functions

Page Organization

Print/Plot Function

Data Variable and Analysis Function

Softkey Maps and External Keyboard

Specications

Accessories and Options

Manual Changes Depending on ROM Version

Index



Programmer's Guide

This manual provides information about controlling the HP 4155A/4156A

by remote command via HP-IB interface and HP Instrument B

ASIC, and

consists of the following chapters:

Using HP Instrument BASIC

Reference: HP Instrument BASIC

Getting Started on Programming the HP 4155A/4156A

HP 4155A/4156A SCPI Programming

Running HP 4145A/B Program Directly on HP 4155A/4156A

Sample Application Programs

Manual Chages Depending on ROM Version



HP-IB Command Reference

This manual is a complete reference of HP-IB commands

the following chapters:

SCPI Commands

HP 4145B Syntax Commands

Manual Changes Depending on ROM Version

Index



Quick Start Guide

, and consists of

This manual is mainly for beginners and provides brief instructions about

using HP 4155A/4156A.

Text Conventions.

The following text conventions are used in this manual:

Front-panel key

NNNNNNNNNNNNNNNNNNNNNNNNNNNNN

Softkey

Screen Text

Italic

Represents a key physically located on HP 4155A/4156A

or external keyboard.

Represents a softkey that appears on screen of

HP 4155A/4156A.

Represents text that appears on screen of

HP 4155A/4156A.

Refers to a related document, or is used for emphasis

xii

1. Introducing the HP 4155A/4156A

Overview of HP 4155A/4156A . . . . . . . . . . . .

Conguration of HP 4155A/4156A and HP 41501A . .

Front View of HP 4155A/4156A . . . . . . . . . . .

Rear View of HP 4155A/4156A . . . . . . . . . . .

1-3

1-4

1-5

1-9

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

Front and Rear View of HP 41501A . . . . . . . . .

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

An Overview of Functions . . . . . . . . . . . . . .

Operation and Control . . . . . . . . . . . . . . .

Measurements and Results Display . . . . . . . . .

Graphical Analysis . . . . . . . . . . . . . . . .

Data Storage . . . . . . . . . . . . . . . . . . .

Plotting and Printing . . . . . . . . . . . . . . .

2. Installation

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

Requirements . . . . . . . . . . . . . . . . . . . .

Power Requirements . . . . . . . . . . . . . . . .

Power Cable . . . . . . . . . . . . . . . . . . .

Ventilation Requirements . . . . . . . . . . . . . .

Operating Environment . . . . . . . . . . . . . .

Cleaning . . . . . . . . . . . . . . . . . . . . .

Setting up HP 4155A/4156A . . . . . . . . . . . . .

To Inspect HP 4155A/4156A and Accessories . . . . .

To Install HP 41501A SMU/Pulse Generator Expander

To Check HP 4155A/4156A Operation . . . . . . . .

Installing Accessories . . . . . . . . . . . . . . . .

To Install Connector Plate . . . . . . . . . . . . .

To Connect InterlockTerminal . . . . . . . . . . .

1-10

1-11

1-12

1-13

1-19

1-20

1-22

1-25

1-26

1-27

2-2

2-3

2-4

2-5

2-7

2-8

2-9

2-10

2-12

2-13

2-17

Contents-1

Change 1

To Connect Connector Plate and DUT . . . . . . . .

To Install HP 16442A Test Fixture ........... 2-29

To Install HP 16441A R-Box . . . . . . . . . . . .

To Install HP 16440A SMU/Pulse Generator Selector .

To Connect HP 16440A Selector to HP 4155A/56A . .

3. Making a Measurement

Connection to Device Under Test (DUT) . . . . . . . .

To Mount a DUT on Test Fixture . . . . . . . . . .

To Make Connections to Reduce Leakage Current . . .

To Make Connections to Measure Low Resistance (For

HP 4156A Only) . . . . . . . . . . . . . . . .

Sweep Measurements . . . . . . . . . . . . . . . .

To Dene Sweep Measurement Units . . . . . . . . .

To Set up Primary Sweep Source . . . . . . . . . .

To Set up Secondary Sweep Source . . . . . . . . .

To Set up Synchronous Sweep Source . . . . . . . .

To Set up Constant Output . . . . . . . . . . . . .

To Set up SMU Pulsed Output . . . . . . . . . . .

To Set up PGU Pulsed Output . . . . . . . . . . .

To Output Same Value Before and After Measurements

To Dene a User Function . . . . . . . . . . . . .

To Set up Graphical Display of Measurement Results .

To Set up List Display of Measurement Results . . . .

To Execute or Stop Measurement . . . . . . . . . .

To Control R-Box . . . . . . . . . . . . . . . . .

Knob Sweep Measurements . . . . . . . . . . . . . .

To Execute Knob Sweep Measurement . . . . . . . .

To Stop Knob Sweep Measurement . . . . . . . . .

Sampling Measurements . . . . . . . . . . . . . . .

To Dene Sampling Measurement Units . . . . . . .

To Set up Sampling Parameters . . . . . . . . . . .

To Set up Constant Output . . . . . . . . . . . . .

To Dene Measurement Stop Conditions . . . . . . .

Stress Force . . . . . . . . . . . . . . . . . . . .

To Set up Stress Source Channels . . . . . . . . . .

To Set up Stress Condition/Timing . . . . . . . . .

To Set up AC (Pulse) Stress . . . . . . . . . . . .

To Set up DC Stress . . . . . . . . . . . . . . . .

ToForce Stress . . . . . . . . . . . . . . . . . .

To Control Selector for Switching SMU and PGU . . .

2-22

2-35

2-38

2-45

3-3

3-4

3-6

3-8

3-10

3-12

3-14

3-16

3-18

3-20

3-21

3-24

3-27

3-28

3-30

3-32

3-33

3-34

3-37

3-38

3-42

3-43

3-45

3-47

3-49

3-51

3-53

3-55

3-57

3-60

3-62

3-64

3-66

Contents-2

4. Analyzing Measurement Results

Manual Analysis . . . . . . . . . . . . . . . . . .

To Specify a MeasurementPoint on Curve . . . . . .

To Specify between MeasurementPoints on Curve. . .

To DisplayorMove Cursor . . . . . . . . . . . . .

To Adjust Display Range to Measurement Curve

Automatically . . . . . . . . . . . . . . . . .

To Zo om the Display Range . . . . . . . . . . . .

To Center Display at Cursor Lo cation . . . . . . . .

To Draw Line through Two Sp ecied Points . . . . .

To Draw Line through Specied Point with Specied

Gradient . . . . . . . . . . . . . . . . . . .

To DrawTangent to Specied Point of Measurement

Curve. . . . . . . . . . . . . . . . . . . . .

To Draw Regression Line for Specied Region . . . . .

To Display and Select a Line . . . . . . . . . . . .

To Display Grid on the Graph . . . . . . . . . . .

To Change Data Variable on Graph . . . . . . . . .

To Change Range of X or Y Axis Scale .

. . . . . . .

To Change Variable Assigned to X, Y1, or Y2 Axis . .

ToOverlayanInternal Memory Measurement Curve

onto Plotting Area . . . . . . . . . . . . . . .

To Scroll the LIST Page . . . . . . . . . . . . . .

To DisplayorMove Marker on LIST Page . . . . . .

To Change Variables of LIST page . . . . . . . . . .

Automatic Analysis . . . . . . . . . . . . . . . . .

To Draw Line by Specifying TwoPoints . . . . . . .

To Draw Line by Specifying Gradient and One Point. .

To DrawTangent to Specied MeasurementPoint. . .

To Draw Regression Line by Sp ecifying TwoPoints . .

To Display Marker at Specied Point . . . . . . . .

Change 1

4-3

4-4

4-6

4-8

4-10

4-11

4-12

4-13

4-15

4-17

4-19

4-22

4-23

4-24

4-25

4-26

4-27

4-29

4-30

4-32

4-33

4-34

4-36

4-38

4-40

4-43

5. Filer

File Operations . . . . . . . . . . . . . . . . . . .

To List File Names Stored on Diskette . . . . . . . .

To Store Setup or Result Data onto Diskette . . . . .

To Store Setup or Result Data into Internal Memory . .

To Store Result Data in Spreadsheet Format . . . . .

To Load Setup or Result Data from Diskette . . . . .

To Load Setup or Result Data from Internal Memory .

To Rename a File on Diskette . . . . . . . . . . . .

5-3

5-5

5-7

5-9

5-11

5-13

5-16

5-18

Contents-3

Change 1

To Remove a File from Diskette . . . . . . . . . . .

To Copy File on Diskette to Another Diskette ...... 5-21

To Copy Setup or Result Data from Internal Memory to

Diskette . . . . . . . . . . . . . . . . . . . .

To Initialize a Diskette . . . . . . . . . . . . . . .

To Backup a Diskette . . . . . . . . . . . . . . .

6. If You Have A Problem

When You Install the HP 4155A/4156A . . . . . . . .

If HP 4155A/4156A cannot be Powered on . . . . . .

If Measurement Units of HP 41501A are not Displayed

on the CHANNELS: CHANNEL DEFINITION Page

If External Keyboard do es not Work . . . . . . . . .

If Display Page do es not App ear after Applying P

If HP 16442A Test Fixture is not Stable . . . . . . .

When You Make A Measurement . . . . . . . . . . .

If Measured Value Oscillates when Measuring

High-Frequency Devices . . . . . . . . . . . . .

If Measured Value Oscillates when Measuring Negative

Resistance . . . . . . . . . . . . . . . . . . .

If Noise Aects the Measured Values . . . . . . . . .

If Measured Voltage has some Error when Forcing a

Large Current . . . . . . . . . . . . . . . . .

If Large Current Causes High Temperature (Thermal

Drift) . . . . . . . . . . . . . . . . . . . . .

If MeasurementTakes More Time than Specied . . .

If Measurement Damages the Device under Test . . . .

If You Get Unexpected Data when Performing Sampling

Measurement . . . . . . . . . . . . . . . . .

If Errors Occur . . . . . . . . . . . . . . . . . . .

If Errors Occur when You Perform Self-calibration or

Diagnostics . . . . . . . . . . . . . . . . . .

If an error o ccurs when you operate HP 4155A/4156A .

If a Measurement Data Status is Displayed. . . . . . .

ower .

5-19

5-23

5-24

5-26

6-4

6-5

6-6

6-7

6-8

6-9

6-10

6-12

6-13

6-14

6-15

6-16

6-17

6-25

6-40

7. Manual Changes Depending on ROM Version

Change 1 . . . . . . . . . . . . . . . . . . . . . .

Index

Contents-4

7-3

Figures

1-1. Front View of HP 4155A/4156A . . . . . . . . . . . . . . 1-5

1-2. Rear View of HP 4155A/4156A .............. 1-9

1-3. Front and Rear View of HP 41501A . . . . . . . . . . . . 1-12

1-4. Rear View of HP 41501A Option 402 ........... 1-14

1-5. Rear View of HP 41501A Option 410 ........... 1-15

1-6. Rear View of HP 41501A Option 412 ........... 1-16

1-7. Rear View of HP 41501A Option 420 ........... 1-17

1-8. Rear View of HP 41501A Option 422 ........... 1-18

2-1. Power Cables . . . . . . . . . . . . . . . . . . . . . .

2-2. Dimensions of Connector Plate for HP 4155A

(HP Part Number: 04155-60006) . . . . . . . . . . . .

2-3. Dimensions of Connector Plate for HP 4156A

(HP Part Number: 04156-60002) . . . . . . . . . . . .

2-4. Dimensions of Connector Plate for HP 41501A

(HP Part Number: 41501-60004) . . . . . . . . . . . .

2-5. Dimensions of Interlock Switch (HP part number 3101-0302) .

2-6. Dimensions of Interlock Switch (HP part number 3101-3241) .

2-7. Dimensions of LED (HP part number 1450-0641) ...... 2-21

2-5

2-14

2-15

2-16

2-20

Tables

1-1. Conguration of HP 41501A ............... 1-4

2-1. Connectors on Connector Plate . . . . . . . . . . . . . .

Contents-5

2-15

Contents

Introducing the HP

4155A/4156A

Introducing the HP 4155A/4156A

The HP 4155A semiconductor parameter analyzer and HP 4156A precision

semiconductor parameter analyzer are made for use in semiconductor

laboratories and factories. The HP 4155A/4156A can measure device

characteristics. The HP 4155A/4156A can do the following:



Perform measurements.



Graph the device characteristics.



Extract device parameters.



Perform go, no-go evaluation.



Perform reliability (stress test) evaluation.

The HP 4155A/4156A is easy to operate and can perform automatic graphical

analysis like the HP 4145B. In addition, the HP 4155A/4156A is also easy to

use in a system, which expands areas of application to quality assurance and

in-line monitoring.

In this chapter.

This chapter provides a view of front and rear panels of the HP 4155A/4156A

and its accessories, and briey describes the HP 4155A/4156A functions.

1-2

Overview of HP 4155A/4156A

HP 4155A/4156A is a box type electronic measurement instrument with CRT

display, exible disk drive, operation keys, and interface connectors.

You can connect a keyboard (HP C1405B) to the HP 4155A/4156A. So

can operate this instrument by using a keyboard or the front-panel keys

HP 16442A is the test xture for HP 4155A/4156A. Y

on the HP 16442A, and measure the device characteristics

HP 41501A SMU and pulse generator expander contains PGUs and additional

SMUs. HP 41501A is attached to and controlled by HP 4155A/4156A.

HP 16441A R-Box contains accurate 10 k, 100 k, and 1 M resistors, and

connection of these resistors is controlled by the HP 4155A/4156A. The HP

16441A is used to measure negative resistance and to prevent DUT damage

when performing breakdown measurements.

HP 16440A SMU/pulse generator selector contains two switching circuits

to connect the DUT to either an SMU or PGU.You can attach another HP

16440A to add two more switching circuits.

ou can mount your DUT

, you

1-3

Introducing the HP 4155A/4156A

Overview of HP 4155A/4156A

Conguration of HP 4155A/4156A and HP 41501A

HP 4155A, HP 4156A, and HP 41501A are frames that contain the

measurement units. The measurement units are installed before the product

is shipped from factory. User cannot recongure the installed units.



HP 4155A conguration:

four medium power source monitor units (MPSMUs).

two voltage source units (VSUs).

two voltage monitor units (VMUs).



HP 4156A conguration:

four high resolution source monitor units (HRSMUs).

two voltage source units (VSUs).

two voltage monitor units (VMUs).

HP 4156A has higher measurement resolution. For details about

measurement range and resolution, refer to \Measurement Units" in

4155A/4156A User's Dictionary Reference



HP 41501A conguration:

HP 41501A is attached to the HP 4155A/4156A at your site

. See Chapter 2

on how to install the HP 41501A.

The HP 41501A contains a ground unit (GNDU). In addition, you specify an

option number according to desired units as follows:

Table 1-1. Conguration of HP 41501A

HP 41501A Option

Unit

One GNDU

Two PGUs

Two MPSMUs

One HPSMU

HPSMU: high power source monitor unit

402 410 412 420 422

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Front View of HP 4155A/4156A

Introducing the HP 4155A/4156A

Overview of HP 4155A/4156A

Figure 1-1. Front View of HP 4155A/4156A

LINE switch.

Use the LINE switch to turn analyzer on and o.

Flexible disk drive (FDD).

Use 3.5 inch diskette to load or store the analyzer settings and measurement

data.

Keyboard connector.

You can use an IBM PC/AT compatible keyboard (HP C1405B) to operate

the HP 4155A/4156A. See \Softkey Maps and External K

4155A/4156A User's Dictionary Reference

eyboard" in

1-5

Introducing the HP 4155A/4156A

Overview of HP 4155A/4156A

PAGE CONTROL key group.

Page Control keys are used to change the pages.

Chan

Moves to CHANNELS page group.You dene channels, user

functions, and user variables.

Meas

Moves to MEASURE page group.You set the output parameters,

measurement parameters, and so on.

Display

Moves to DISPLAY page group.You set the result display

format, auto analysis denitions, and so on.

Graph/List

Moves to GRAPH/LIST page group. This softkey toggles between

GRAPH and LIST pages.

Stress

Moves to STRESS page group.You dene the stress channels,

set the stress parameters, and monitor the stress forcing.

System

Moves to SYSTEM page group.You operate on diskette les,

set up plotting and printing environment, dene colors of the

display, and so on.

MARKER/CURSOR key group.

Rotary knob and arrow keys of the Marker/Cursor key group are used to

move the marker and cursor.

Rotary knob Moves the marker, or increases or decreases setup value.

4(5,4

4*5

Fast

)

, and

Moves eld pointer or cursor.

Moves the marker or cursor faster. When you rotate the rotary

knob or press the arrow keys with holding

key down, the

Fast

marker or cursor moves faster.

1-6

Introducing the HP 4155A/4156A

Overview of HP 4155A/4156A

MEASUREMENT key group.

Measurement keys control the measurement, stress, and integration time.

Single

Executes the measurement once, then returns to the idle state

(or standby state if standby is enabled for the channel) after the

measurement is nished. Measurement data is updated, so data

of previous measurement is lost. Pressing the green key, then

Repeat

key starts

Single

Starts and repeats the measurement continuously. Measurement

knob sweep

measurement.

data is updated, so data of previous measurement is lost. To

Append

stop the measurement, press

Executes the measurement once, then returns to idle state

Stop

key.

(or standby state if standby is enabled for the channel) after

measurement is nished. Measurement data is appended to data

of previous measurement.

Stop

Stops the measurement or stress. Standby enabled channels

return to standby state, and other channels return to idle state.

Standby

Toggles between the standby enabled (Standby indicator is lit)

and disabled states. If Standby indicator is lit, then

STBY ON

channels change to standby state (instead of idle state) when

measurement or stress nishes.

key has no aect on

Stop

standby state.

Stress

Short

Medium

and

Long

Forces the specied stress. The guide around this key prevents

you from accidently pressing the

Stress

key.

Sets the integration time to SHORT, MEDIUM, or LONG,

respectively.

MEASUREMENT indicator.

This indicator lights when HP 4155A/4156A is in the measurement state.

HIGH VOLTAGE indicator.

This indicator lights when a unit forces more than 40 V

Standby indicator.

This indicator lights when the HP 4155A/4156A is standby enabled, which

means that the channels that are standby enabled (

STBY ON

) will return to

the standby state after the measurement is nished.

1-7

Introducing the HP 4155A/4156A

Overview of HP 4155A/4156A

IBASIC key group.

IBASIC keys control the IBASIC program execution.

Run

Starts the IBASIC program that is in memory. The indicator is

on during program execution.

Pause

Display

Pauses the IBASIC program execution.

Toggles between the IBASIC screen and measurement screen.

Run indicator.

When an IBASIC program is running, this indicator lights.

ENTRY key group.

You enter or modify data such as output values, comments, and variable

names.

Character keys Are used to enter alphanumeric and special characters.

Enter

After you enter desired characters into the data entry

eld, press this key. The characters are entered at the

eld pointer location.

Also, you can use the green key to calculate the value of

the data entry eld. For example, if you press

greenkey

, the result (24) appears.

Enter

454*546

Blue key Changes entry mode to blue-key shift mode, and lights

the indicator. In this mode, you can enter the blue

characters that are printed above the keys. Pressing blue

key again changes to normal mode. Indicator turns o.

Green key Changes entry mode to green-key shift mode. This mode

is eective for the next pressed key, then changes back to

normal mode.

Edit keys Are used to edit the characters in the data entry eld.

User File keys Are used to operate quickly on a diskette le. Pressing

moves into the ler's SAVE function, and pressing

Save

moves into the ler's GET function.

Get

key.

Help

Pressing

Plot/Print

Pressing

your plotter, printer, or diskette le. If you press green key and

Help

key.

Plot/Print

displays the

prints the setup information and measurement results to

help

pages.

Plot/Print

the screen image is dumped to plotter, printer, or diskette le.

1-8

Rear View of HP 4155A/4156A

Introducing the HP 4155A/4156A

Overview of HP 4155A/4156A

Figure 1-2. Rear View of HP 4155A/4156A

1-9

Introducing the HP 4155A/4156A

Overview of HP 4155A/4156A

To R-Box terminal.

\To R-Box" terminal is a 10-pin connector.To use R-Box, connect this

terminal to control terminal of HP 16441A R-Box.

VSU terminals.

VSU output terminals are BNC connectors.To use VSUs, connect these

terminals to VSU terminals of HP 16442A or connector plate.

VMU terminals.

VMU input terminals are BNC connectors.To use VMUs, connect these

terminals to VMU terminals of HP 16442A or connector plate.

WARNING

Circuit Common (

) and Frame ground ( ) terminals.

For oating measurement, remove the shorting bar (HP part number

5000-4206).

Do not oat the Circuit Common terminal at voltages greater than

42 V

referenced to frame ground. Failure to heed this warning may result in

damage to HP 4155A/4156A.

Serial number.

You need this

serial number

when using the telephone assistance program

(HP HelpLine).

Voltage selector.

Voltage selector must be in proper position. Line voltage and position are:

Line Voltage Position

90|132 Vac left

198|264 Vac right

Fuse.

Use the following fuse:

Line Fuse type HP part number

100/120 Vac UL/CSA T 8A, 250 Vac 2110-0383

220/240 Vac UL/CSA T 4A, 250 Vac 2110-0014

LINE input receptacle.

AC power cable is connected to this receptacle.

1-10

Introducing the HP 4155A/4156A

Overview of HP 4155A/4156A

SMU terminals.

HP 4155A has four triaxial connectors. HP 4156A has eight triaxial

connectors, and you can use Kelvin connections. When you use HP 16442A

test xture and Kelvin connections, up tp 3 SMUs can be connected to HP

16442A test xture.

To Expander Box Interface.

When you use HP 41501A, you insert the board for HP 41501A into this

interface.

Zero Check terminal.

Ground reference point of the HP 4155A/4156A.

Ext Trig terminals.

Two BNC connectors: one for trigger input, and one for trigger output.

WARNING

Intlk terminal.

Used in conjunction with interlock function of HP 4155A/4156A. If the Intlk

terminal is open, maximum SMU output is limited to

40 V. Be sure to

connect this terminal to HP 16442A test xture or connector plate before

performing measurement. If you use connector plate, you must install

interlock circuit. For details on how to install the interlock circuit, see \T

Connect Interlock Terminal" in Chapter 2.

Dangerous voltage of up to the maximum voltage of SMUs may be present

at force, guard, and sense terminals if the interlock terminal is shorted.

Serial Interface connector.

9-pin female connector for RS-232-C serial communication.

HP-IB connector.

Use HP 10833A/B/C/D HP-IB cable.

1-11

Introducing the HP 4155A/4156A

Overview of HP 4155A/4156A

Front and Rear View of HP 41501A

Figure 1-3. Front and Rear View of HP 41501A

LINE switch.

Use the LINE switch to turn HP 41501A on and o.

41501A before turning on the HP 4155A/4156A.

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You must turn on the HP

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