Agilent 4338B Operations Guide

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HP 4338B Milliohmmeter

Operation Manual

SERIAL NUMBERS

This manual applies directly to instruments with serial

number prex JP1KD, or rmware revision 1.01.

For additional important information about serial

numbers, read \Serial Number" in Appendix A.

HP Part No. 04338-90030

Printed in Japan June 1998

Third Edition

Notice

The information contained in this document is subject to change without notice.

This document contains proprietary information that is protected by copyright. All rights are

reserved. No part of this document may be photocopied, reproduced, or translated to another

language without the prior written consent of the Hewlett-Packard Company.

Hewlett-Packard Japan, LTD.

Kobe Instrument Division

1-3-2, Murotani, Nishi-Ku, Kobe-shi,

Hyogo, 651-2241 Japan



HP 4338B

Manual Printing History

The manual's printing date and part number indicate its current edition. The printing date

changes when a new edition is printed. (Minor corrections and updates that are incorporated

at reprint do not cause the date to change.) The manual part number changes when extensive

technical changes are incorporated.

March 1996

April 1997

June 1998

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::::: ::::::: :::::: ::::::: ::::::: :::::: ::::::: ::::::: :::::: ::::::: :::::::

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First Edition

Second Edition

Third Edition

iii

HP 4338B

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.

The Hewlett-Packard Company assumes no liability for the customer's failure to comply with

these requirements.

Note

HP 4338B comply with INSTALLATION CATEGORY II and POLLUTION

DEGREE 2 in IEC1010-1. HP 4338B are INDOOR USE product.

Note

LEDs in HP 4338B are Class 1 in accordance with IEC825-1.

CLASS 1 LED PRODUCT

Ground The Instrument

To avoid electric shock hazard, the instrument chassis and cabinet must be connected to a

safety earth ground by the supplied power cable with earth blade

DO NOT Operate In An Explosive Atmosphere

Do not operate the instrument in the presence of ammable gasses or fumes

. Operation of any

electrical instrument in such an environment constitutes a denite safety hazard.

Keep Away From Live Circuits

Operating personnel must not remove instrument covers. Component replacement and internal

adjustments must be made by qualied maintenance personnel. Do not replace components

with the 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 Adjust Alone

Do not attempt internal service or adjustment unless another person, capable of rendering rst

aid and resuscitation, is present.

DO NOT Substitute Parts Or Modify Instrument

Because of the danger of introducing additional hazards, do not install substitute parts

or perform unauthorized modications to the instrument. Return the instrument to a

Hewlett-Packard Sales and Service Oce for service and repair to ensure that safety features

are maintained.

HP 4338B

Dangerous Procedure Warnings

Warnings

, such as the 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

this instrument.

Safety Symbols

General denitions of safety symbols used on equipment or in manuals are listed below.

Instruction manual symbol: the product is marked with this symbol when it is

necessary for the user to refer to the instruction manual.

Alternating current.

Direct current.

On (Supply).

O (Supply).

In position of push-button switch.

Out position of push-button switch.

Frame (or chassis) terminal. A connection to the frame (chassis) of the

equipment which normally include all exposed metal structures.

This

Warning

sign denotes a hazard. It calls attention to a procedure

condition or the like, which, if not correctly performed or adhered to

, practice,

, could

result in injury or death to personnel.

This

Caution

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 damage to or destruction of part or all of the product.

This

Note

sigh denotes important information. It calls attention to a

procedure, practice, condition or the like, which is essential to highlight.

Axed to product containing static sensitive devices use anti-static handling

procedures to prevent electrostatic discharge damage to component.

HP 4338B

Certication

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 United States National Institute of Standards and

Technology, to the extent allowed by the Institution's calibration facility, or to the calibration

facilities of other International Standards Organization members.

Warranty

This Hewlett-Packard instrument product is warranted against defects in material and

workmanship for a period of one year from the date of shipment, except that in the case of

certain components listed in

General Information

of this manual, the warranty shall be for the

specied period. During the warranty period, Hewlett-Packard Company will, at its option,

either repair or replace products that prove to be defective.

For warranty service or repair, this product must be returned to a service facility designated by

HP. Buyer shall prepay shipping charges to HP and HP shall pay shipping charges to return the

product to Buyer. However, Buyer shall pay all shipping charges, duties, and taxes for products

returned to HP from another country.

HP warrants that its software and rmware designated by HP for use with an instrument will

execute its programming instruction when property installed on that instrument. HP 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cation or

misuse, operation outside the environmental specications for the product, or improper site

preparation or maintenance.

No other warranty is expressed or implied. HP specically disclaims the implied warranties

of merchantability and tness for a particular purpose.

HP 4338B

Exclusive Remedies

The remedies provided herein are buyer's sole and exclusive remedies. HP shall not be liable

for any direct, indirect, special, incidental, or consequential damages, whether based on

contract, tort, or any other legal theory.

Assistance

Product maintenance agreements and other customer assistance agreements are available for

Hewlett-Packard products.

For any assistance, contact your nearest Hewlett-Packard Sales and Service Oce.Addresses

are provided at the back of this manual.

vii

Typeface Conventions

HP 4338B

Bold

Italics

Computer

HARDKEYS

NNNNNNNNNNNNNNNNNNNNNNNNNN

SOFTKEYS

Boldface type is used when a term is dened. For example:

icons

are

symbols.

Italic type is used for emphasis and for titles of manuals and other

publications.

Italic type is also used for keyboard entries when a name or a variable

must be typed in place of the words in italics.For example:

lename

type the name of a le such as

means to type the word

file1

copy

, to type a space, and then to

copy

Computer font is used for on-screen prompts and messages.

Labeled keys on the instrument front panel are enclosed in45.

NNNNN

Softkeys located to the right of the CRT are enclosed in

viii

1. Getting Started

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

Overview .... ...... ...... ...... ...... ..... . 1-2

Features ...... ...... ...... ...... ...... ... 1-2

Accessories Available . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

Front Panel .. ...... ...... ...... ...... ...... 1-4

Display .................................. 1-7

Rear Panel ................................ 1-8

Incoming Inspection ............................. 1-9

Ventilation Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9

Instruction for Cleaning ...... ...... ...... ...... ...

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

Preparation for Use .............................

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

1-9

1-10

1-12

Fuse . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Turning ON the HP 4338B .........................

Using Front-Panel Keys ...........................

Direct Execution Keys . . . . . . . . . . . . . . . . . . . . . . . . . . .

Toggle Keys .... ...... ...... ...... ...... ....

Selection Keys . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Value Setup Keys .............................

Numeric Keys . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Maximum and Minimum Keys ......................

Left/Down and Right/Up Arrow Keys . . . . . . . . . . . . . . . . . . .

Back Space Key ...... ...... ...... ...... .....

1-12

1-13

1-14

1-15

1-16

1-17

ToPerform a Measurement .... ...... ..... ...... .. 1-18

Connecting a Test Fixture .......................... 1-19

Using the HP 16338A .... ...... ...... ...... ..... 1-19

To Reset HP 4338B . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-20

ToPerform a SHORT Correction . . . . . . . . . . . . . . . . . . . . . . . .

To Select Measurement Parameter .. ...... ..... ...... ...

To Select Auto Measurement Mode ......................

To Select Test Signal Level .. ...... ...... ...... ......

To Select Measurement Range ........................

Auto / Hold Range Mode ...... ...... ...... ...... ..

Measurement Range Setting .. ...... ...... ...... ....

1-20

1-22

1-23

Contents-1

2. Operating the HP 4338B

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

Measurement Conguration ......................... 2-2

To Select the Measurement Time Mode ................... 2-2

To Set the Averaging Rate ......................... 2-2

To Set the Trigger Delay or Source Delay Time . . . . . . . . . . . . . . . . 2-2

To Set the Contact Check . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3

To Set the Beeper Mode .......................... 2-4

To Save and Recall Instrument Settings .... ...... ...... ... 2-4

Making a Measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6

To Trigger a Measurement .... ...... ...... ...... ... 2-6

To Use the Comparator Function ...................... 2-7

To Display Deviation Data .... ...... ...... ...... ... 2-8

To Set the Reference Value . . . . . . . . . . . . . . . . . . . . . . . . 2-8

To Select the Deviation Display Mode . . . . . . . . . . . . . . . . . . . 2-9

To Set the Display Mode and Display Digits ................. 2-10

To Change the Measurement Settings Display Mode .... ...... ... 2-11

To Lock Out the Front Panel Keys ...... ...... ..... .... 2-12

To Select the Local Mode . . . . . . . . . . . . . . . . . . . . . . . . . . 2-12

To Set the HP-IB Address . . . . . . . . . . . . . . . . . . . . . . . . . . 2-12

To Print Measurement Data . . . . . . . . . . . . . . . . . . . . . . . . .

ToTest the HP 4338B ............................

ToPerform a Self-Test ...........................

ToTest the Front Panel Keys' Functionality ...... ...... .....

If You Have a Problem . . . . . . . . . . . . . . . . . . . . . . . . . . . .

If the Display is Blank and the HP 4338B Appears Dead

...........

If an Error Message is Displayed ......................

If the HP 4338B does not Accept Any Key Input . . . . . . . . . . . . . . .

2-12

2-13

2-14

3. Function Reference

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Front Panel .................................

Display ..................................

LINE Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Chassis Terminal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

UNKNOWN Terminals . . . . . . . . . . . . . . . . . . . . . . . . . 3-3

Auto Measurement Key ........................ 3-3

Level Key ...... ...... ...... ..... ...... . 3-4

Measurement Parameter Key ...... ...... ...... ... 3-5

Deviation Mode Key ...... ...... ...... .....

Measurement Time Key ........................

Show Setting Key ...........................

Display Mode Key ...... ...... ...... ......

Average Key .............................

Auto / Hold range Key ........................

Range Setup Key

......................... 3-6

Trigger Key ..............................

Trigger Mode Key

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

Delay Key .............................

3-1

3-2

3-3

3-5

3-6

3-7

Contents-2

Local Key ............................... 3-8

Address Key

............................ 3-8

Save Key ............................. 3-8

Recall Key .......... ...... ...... ...... .. 3-9

Primary and Secondary comparator limit Key

Left/Down Arrow Key and Right/Up Arrow Key

0, 1, . . . , 9,0(minus), .(point) Key

... ......... 3-9

............ 3-9

...... .... 3-9

Enter Key ............................... 3-9

BLUE Shift Key

............................ 3-9

Engineering units Key .... ...... ..... ...... .... 3-10

Back Space Key ............................ 3-10

Minimum Key

Maximum Key

...... ...... ..... ...... .... 3-10

........................... 3-10

Comparator Key ...... ...... ...... ...... .. 3-10

Contact Check Key ........................ 3-11

Short Key .............................

Key Lock Key ...........................

Reset Key ...... ...... ...... ...... .....

Conguration Key ...... ...... ...... ...... .

Rear Panel .................................

External Trigger . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3-11

3-12

3-14

LINE Fuse Holder .. ...... ...... ..... ...... .

LINE Voltage Selector ...........................

Serial Number Plate .. ...... ...... ...... ...... ..

Power Cord Receptacle . . . . . . . . . . . . . . . . . . . . . . . . . . .

Power Code . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Handler Interface .............................

Specication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

HP-IB Interface .......... ...... ...... ...... .. 3-18

Theory of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-20

Overall Measurement Theory . . . . . . . . . . . . . . . . . . . . . . . . 3-20

Test Signal Level . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-22

Actual Signal Level across DUT . . . . . . . . . . . . . . . . . . . . . . 3-22

Limitation of Test Level .... ...... ...... ..... ....

4. Remote Operation

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Getting Started ...... ...... ...... ...... ...... .

Input/Output Statements . . . . . . . . . . . . . . . . . . . . . . . . . .

Reading the HP-IB Address . . . . . . . . . . . . . . . . . . . . . . . . .

Sending a Remote Command .... ...... ...... ...... ..

Returning to the Local Mode ...... ...... ...... ..... . 4-3

Query Commands ............................. 4-3

Getting Data from the HP 4338B ........ ...... ...... ..

To Control the HP 4338B from an External Computer

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

To Set Up the HP 4338B ...........................

To Reset the HP 4338B . . . . . . . . . . . . . . . . . . . . . . . . . . .

3-15

3-16

3-22

4-1

4-2

4-3

4-4

4-5

Contents-3

To Set the LINE Frequency . . . . . . . . . . . . . . . . . . . . . . . . . 4-5

ToPerform the SHORT Correction . . . . . . . . . . . . . . . . . . . . . 4-5

To Select the Measurement Parameter . . . . . . . . . . . . . . . . . . . 4-5

To Select the Auto Measurement Mode .................. 4-6

To Select the Measurement Range . . . . . . . . . . . . . . . . . . . . . 4-6

To Select the Test Signal Level ...................... 4-6

To Set the Measurement Time Mode . . . . . . . . . . . . . . . . . . . . 4-6

To Set the Averaging Rate ...... ...... ..... ...... . 4-7

To Set the Delay Time .. ...... ...... ...... ...... 4-7

To Set the Beeper Mode .... ...... ...... ...... ... 4-7

To Use Comparator Function .... ...... ...... ..... ... 4-8

To Display a Deviation Measurement .... ...... ...... .... 4-8

ToWait Until Previously Sent Commands are Completed ........... 4-8

To Get the Current Instrument Settings ................... 4-9

To Save and Recall Instrument Settings .... ...... ...... ... 4-9

To Trigger a Measurement .......................... 4-10

To Retrieve Data Eciently .......... ...... ...... ... 4-12

To Transfer Data Using the Real Data Format .. ...... ...... .. 4-12

To Use a Data Buer . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-12

Other Features ............................... 4-13

To test the HP 4338B . . . . . . . . . . . . . . . . . . . . . . . . . . . .

To Report the Instrument's Status . . . . . . . . . . . . . . . . . . . . . .

If You Have a Problem . . . . . . . . . . . . . . . . . . . . . . . . . . . .

If the HP 4338B Hangs Up When You Send

ABORt

Command .........

4-13

4-15

5. HP-IB Reference

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

HP-IB Commands ..............................

Common Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Subsystem Commands ...........................

Subsystem Command Tree ..........................

Program Message Syntax . . . . . . . . . . . . . . . . . . . . . . . . . . .

Case .. ...... ...... ...... ...... ..... ....

Program Message Terminator . . . . . . . . . . . . . . . . . . . . . . . .

Subsystem Command Syntax . . . . . . . . . . . . . . . . . . . . . . . .

Common Command Syntax . . . . . . . . . . . . . . . . . . . . . . . . . 5-5

Parameters ................................ 5-5

Parameter Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-5

Sux . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-6

Multiple Messages ............................. 5-7

Query and Response Message Syntax ...... ...... ..... ...

Command Reference . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Notations .................................

ABORt Command ..............................

:ABORt ...... ...... ...... ...... ...... ....

CALCulate Subsystem ............................

:CALCulate1:FORMatfREALjMLINear

:CALCulate2:FORMatfNONEjIMAGnaryjPHASejLS

........ 5-11

:CALCulatef1j2g:LIMit:BEEPer:CONDitionfFAILjPASSg.......... 5-11

:CALCulatef1j2g:LIMit:BEEPer[:STATe]fONjOFFj1j0g.......... 5-12

:CALCulatef1j2g:LIMit:CLEar . . . . . . . . . . . . . . . . . . . . . . . .

:CALCulatef1j2g:LIMit:FAIL? . . . . . . . . . . . . . . . . . . . . . . . .

:CALCulatef1j2

:LIMit:LOWer[:DATA]<numeric value>...... .....

:CALCulatef1j2g:LIMit:LOWer:STATefONjOFFj1j0g...... .....

:CALCulatef1j2g:LIMit:STATefONjOFFj1j0g..............

5-1

5-4

5-5

5-7

5-8

5-9

5-10

5-12

5-13

Contents-4

:CALCulatef1j2g:LIMit:UPPer[:DATA]<numeric value>...... ..... 5-13

:CALCulatef1j2g:LIMit:UPPer:STATefONjOFFj1j0g...... ..... 5-13

:CALCulatef1j2g:MATH:EXPRession:CATalog? . . . . . . . . . . . . . . . . 5-13

:CALCulatef1j2g:MATH:EXPRession:NAMEfDEVjPCNTg...... ... 5-14

:CALCulatef1j2g:MATH:STATefONjOFFj1j0g.............. 5-14

:CALCulatef1j2g:PATH? .... ...... ...... ...... .... 5-14

DATA Subsystem . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-15

:DATA[:DATA]fREF1jREF2g,<numeric value>.............. 5-15

:DATA[:DATA]?fBUF1jBUF2g...................... 5-16

:DATA:FEEDfBUF1jBUF2g,<data handle>............... 5-16

:DATA:FEED:CONTrolfBUF1jBUF2g,fALWaysjNEVerg...... ... 5-17

:DATA:POINtsfBUF1jBUF2g,<numeric value>.............. 5-17

DISPlay Subsystem . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-18

:DISPlay[:WINDow][:STATe]fONjOFFj1j0g............... 5-18

:DISPlay[:WINDow]:TEXT1:DIGitf3j4j5g.................. 5-18

:DISPlay[:WINDow]:TEXT1:PAGEf1j2g...... ...... ...... 5-18

:DISPlay[:WINDow]:TEXT2:PAGEf1j2j3j4g................. 5-18

FETCh? Query .......... ...... ...... ..... .... 5-19

:FETCh? ................................. 5-19

FORMat Subsystem ............................. 5-20

:FORMat[:DATA]fASCiijREAL[,64]

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

INITiate Subsystem ...... ...... ...... ..... ......

:INITiate[:IMMediate] ...........................

:INITiate:CONTinuousfONjOFFj1j0g..................

SENSe Subsystem ..............................

[:SENSe]:AVERage:COUNt<numeric value>...... ...... ....

[:SENSe]:AVERage[:STATe]fONjOFFj1j0g................

[:SENSe]:CORRection:COLLect[:ACQuire] STANdard2 .. ...... ....

[:SENSe]:CORRection:COLLect:METHod REFL1 ...... ...... ...

[:SENSe]:CORRection:DATA? STANdard2 .... ...... ...... ..

[:SENSe]:CORRection[:STATe]fONjOFFj1j0

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

[:SENSe]:FIMPedance:APERture<numeric value>[MSjS] ..........

[:SENSe]:FIMPedance:CONTact:VERifyfONjOFFj1j0g...... ...... .

[:SENSe]:FIMPedance:RANGe:AUTOfONjOFFj1j0g...........

5-20

5-21

5-22

5-23

5-24

[:SENSe]:FIMPedance:RANGe[:UPPer]<numeric value>[MOHMjOHMjKOHM] . 5-24

[:SENSe]:FUNCtion<sensor function>...... ...... ...... . 5-24

SOURce Subsystem ............................. 5-25

:SOURce:CURRent[:LEVel][:IMMediate][:AMPLitude]<numeric value>[UAjMA] 5-25

:SOURce:CURRent[:LEVel][:IMMediate][:AMPLitude]:AUTOfONjOFFj1j0

5-25

STATus Subsystem . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-26

:STATus:OPERation[:EVENt]? . . . . . . . . . . . . . . . . . . . . . . . .

:STATus:OPERation:CONDition? ...... ...... ..... .....

:STATus:OPERation:ENABle<numeric value>...... ...... ...

:STATus:PRESet .. ...... ...... ...... ...... ....

:STATus:QUEStionable[:EVENt]? ......................

:STATus:QUEStionable:CONDition? .....................

5-26

5-27

:STATus:QUEStionable:ENABle<numeric value>...... ...... .. 5-27

SYSTem Subsystem . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5-28

:SYSTem:BEEPer[:IMMediate] . . . . . . . . . . . . . . . . . . . . . . . . 5-28

:SYSTem:BEEPer:STATefONjOFFj1

:SYSTem:ERRor? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

:SYSTem:KLOCkfONjOFFj1j0

:SYSTem:LFRequency<numeric value>..................

:SYSTem:PRESet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

:SYSTem:VERSion? . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

0g................. 5-28

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

5-28

5-29

Contents-5

TRIGger Subsystem ............................. 5-30

:TRIGger[:SEQuence1]:DELay<numeric value>[MSjS].. ...... .... 5-30

:TRIGger[:SEQuence1][:IMMediate] .. ...... ...... ...... . 5-30

:TRIGger[:SEQuence1]:SOURcefBUSjEXTernaljINTernaljMANualg.... 5-30

:TRIGger:SEQuence2:DELay<numeric value>[MSjS] ............ 5-30

Common Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-31

CLS ...... ...... ...... ..... ...... ...... 5-31

ESE<numeric value>...... ...... ...... ..... ... 5-31

ESE? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-31

ESR? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-31

IDN? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-31

LRN? .................................. 5-31

OPC ................................... 5-31

OPC? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-32

OPT? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-32

RCL<numeric value>...... ...... ...... ..... ... 5-32

RST ...... ...... ...... ..... ...... ...... 5-32

SAV<numeric value>.......................... 5-32

SRE<numeric value>.......................... 5-32

SRE? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-32

STB? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

TRG ...................................

TST? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

WAI ........ ...... ...... ..... ...... ....

Status Reporting Structure . . . . . . . . . . . . . . . . . . . . . . . . . .

Service Request (SRQ) ...........................

Status Byte Resister ............................

Standard Event Status Register . . . . . . . . . . . . . . . . . . . . . . .

Standard Operation Status Group . . . . . . . . . . . . . . . . . . . . . .

Operation Status Register .........................

Questionable Status Register ........................

Trigger System ........ ...... ...... ...... .....

HP 4338B Trigger System Conguration . . . . . . . . . . . . . . . . . . .

Idle State .... ...... ...... ...... ...... ....

Initiate State ..............................

5-33

5-34

5-35

5-36

5-37

5-38

5-39

5-40

Event Detection State .......................... 5-40

Sequence Operation State ........................ 5-40

Data Transfer Format ...... ...... ...... ...... .... 5-41

ASCII Format ............................... 5-41

REAL Format ............................... 5-42

6. Application Measurement

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Measuring Contact Resistance of Relays or Switches ...... ...... .. 6-2

Measuring Internal Resistance of Batteries . . . . . . . . . . . . . . . .

Contents-6

6-1

6-5

7. Measurement Basics

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1

SHORT Correction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1

Measurement Range .... ...... ...... ...... ...... . 7-2

Dry Circuit Loop . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-2

Extending Test Leads ............................ 7-3

8. General Information

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1

Specications ................................ 8-2

Measurement Parameter .. ...... ...... ...... ..... . 8-2

Measurement Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . 8-2

Measurement Range ............................ 8-2

Measurement Accuracy ...... ...... ...... ...... .. 8-3

Measurement Support Functions ...................... 8-5

General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-6

Supplemental Performance Characteristics ...... ...... ...... 8-7

9. Maintenance

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-1

Test Equipment ...............................

Performance Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Test Equipment ...... ...... ...... ...... ......

Calculation Sheet .... ...... ...... ...... ...... .

Performance Test Record . . . . . . . . . . . . . . . . . . . . . . . . . .

Calibration Cycle .. ...... ...... ...... ...... ...

Test Signal Frequency Accuracy Test ....................

Specication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Test Equipment .............................

Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Resistance Measurement Accuracy Test .... ...... ...... ...

Specication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Test Equipment .............................

Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Calculation Sheet .... ...... ...... ...... ...... . 9-9

Test Signal Frequency Accuracy Test ................... 9-9

Resistance Measurement Accuracy Test .................. 9-9

Performance Test Record . . . . . . . . . . . . . . . . . . . . . . . . . . 9-10

Test Signal Frequency Accuracy Test ................... 9-10

Resistance Measurement Accuracy Test ..................

Functional Test ...............................

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Test Equipment ...... ...... ...... ...... ......

Test Signal Level Functional Test ......................

Test Equipment .............................

Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Handler Interface Functional Test.. ...... ...... ...... ..

Test Equipment ............................. 9-14

Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-14

Initial Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Key Lock Function Test ........................

External Trigger Function Test .....................

Handler Interface Output Test ..................... 9-15

Functional Test Record . . . . . . . . . . . . . . . . . . . . . . . . . . .

9-1

9-2

9-3

9-4

9-6

9-10

9-11

9-12

9-14

9-16

Contents-7

Test Signal Level Functional Test ..................... 9-16

A. Manual Changes

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1

Manual Changes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1

Change 1 ................................. A-2

Serial Number . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-3

B. Handler Interface Installation

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-1

Electrical Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . B-1

Output Signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-1

Input Signals ............................... B-4

Setting Up the Handler Interface Board . . . . . . . . . . . . . . . . . . . . B-5

Tools and Fasteners ............................. B-5

Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-5

Messages

Instrument Errors .... ...... ...... ...... ...... ..Messages-2

HP-IB Errors ................................Messages-3

Index

Contents-8

Figures

1-1. Power Cable Supplied ........................... 1-11

1-2. Voltage Selector and Fuse ......................... 1-12

1-3. Connecting HP 16338A . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-19

3-1. Front Panel ...... ...... ...... ...... ...... .. 3-2

3-2. Test Level and Measurement Range Setup . . . . . . . . . . . . . . . . . . 3-4

3-3. Source Delay and Trigger Delay . . . . . . . . . . . . . . . . . . . . . . . 3-7

3-4. Rear Panel ................................ 3-14

3-5. Required External Trigger Pulse Specication ........ ...... .. 3-14

3-6. Pin Assignment For Handler Interface Connector .... ...... .... 3-16

3-7. Timing Diagram .............................. 3-18

3-8. Denition of Impedance .......................... 3-20

3-9. Vector Representation of Impedance .... ...... ...... ....

3-10. Relationship between Measurement Parameters ...............

3-11. Simplied Model of HP 4338B .......................

4-1. Simple Program Example . . . . . . . . . . . . . . . . . . . . . . . . . .

5-1. Proper Use of the Colon and Semicolon . . . . . . . . . . . . . . . . . . .

5-2. Status Reporting Structure . . . . . . . . . . . . . . . . . . . . . . . . .

5-3. Status byte Register ............................

5-4. Standard Event Status Register . . . . . . . . . . . . . . . . . . . . . . .

5-5. Standard Operation Status Group Structure .................

5-6. Trigger System Conguration . . . . . . . . . . . . . . . . . . . . . . . .

5-7. Inside an Event Detection State ......................

5-8. NR1 Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5-9. NR2 Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5-10. NR3 Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5-11. Real Data Format .............................

6-1. Measuring Contact Resistance ....................... 6-4

6-2. Measuring Internal Resistance of Batteries ...... ...... ..... 6-5

6-3. Application Sample Program ........................ 6-7

7-1. SHORT Correction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1

7-2. Test Lead Extension ............................ 7-3

9-1. Test Signal Frequency Accuracy Test Setup .................

9-2. Resistance Measurement Accuracy Test Setup ................

9-3. Test Signal Level Functional Test Setup .... ...... ...... ...

9-4. Handler Interface Functional Test Setup . . . . . . . . . . . . . . . . . . .

9-5. Handler interface Output Order . . . . . . . . . . . . . . . . . . . . . . .

A-1. Serial Number Plate ...... ...... ...... ...... ....

B-1. Handler Interface Comparison Output Signals Diagram . . . . . . . . . . . .

B-2. Handler Interface Control Output Signals Diagram . . . . . . . . . . . . . .

B-3. Handler Interface Input Signal Diagram . . . . . . . . . . . . . . . . . . . B-4

B-4. A1 Main Board Location .......................... B-7

3-20

3-21

3-22

4-4

5-4

5-34

5-35

5-36

5-37

5-39

5-40

5-41

5-42

9-4

9-7

9-12

9-14

9-15

A-3

B-2

B-3

Contents-9

Tables

1-1. Line Voltage Selection .. ...... ...... ...... ..... .. 1-12

3-1. Line Voltage selection ........................... 3-15

3-2. Contact Assignment for Comparator Function . . . . . . . . . . . . . . . . 3-17

3-3. HP-IB Interface Capability ......................... 3-19

3-4. Source Voltage and Source Resistance . . . . . . . . . . . . . . . . . . . . 3-22

5-1. Sux Multiplier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-6

5-2. Measurement Parameter Selection ..................... 5-11

5-3. Status Byte Assignments . . . . . . . . . . . . . . . . . . . . . . . . . . 5-35

5-4. Standard Event Status Register Assignments . . . . . . . . . . . . . . . . . 5-36

5-5. Operation Status Condition Register Assignments .. ...... ...... 5-38

5-6. Operation Status Event Register Assignments ...... ...... .... 5-38

5-7. Questionable Status Register Assignments . . . . . . . . . . . . . . . . . .

8-1. Measurement Accuracy ..........................

9-1. Required Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . .

9-2. Resistance Measurement Accuracy Test Settings .... ...... .....

9-3. ......................................

A-1. Manual Changes by Serial Number ...... ...... ...... ...

A-2. Manual Changes by ROM Version ......................

B-1. Handler Output Electrical Characteristics ..................

B-2. Handler Input Electrical Characteristics . . . . . . . . . . . . . . . . . . .

B-3. Pull-up Resister Locations .........................

5-38

8-4

9-1

9-8

9-13

A-1

B-1

B-4

B-8

Contents-10

Getting Started

Introduction

This chapter provides the information necessary to get you started using your HP 4338B

Milliohmmeter. This chapter discusses the following topics:

Overview

Incoming Inspection

Ventilation Requirements

Instruction for Cleaning

Power Cable

Preparation for Use

Using Front-Panel Keys

Basic Operation

Getting Started 1-1

Overview HP 4338B

Overview

HP 4338B Milliohmmeter is a precise, reliable, and high speed test tool for measuring low

resistance.

Features

Low and selectable test signal current: 1Ato10mA

Wide measurement range: 10 to 100 k

10 resolution

1 kHz ac measurement

High speed measurement: 34 ms

Built-in comparator

Auto measurement mode

Precise Low Resistance Measurement

Contact failure of electro-mechanical components in low current circuits is a key issue in

determining these components' reliability. The HP 4338B oers selectable low level ac

test signals (1A to 10 mA), so now low current conditions can be characterized. A high

resolution of 10 allows you to determine the slightest dierences in contact resistance

testing of relays, switches, connectors, PC board traces, and cables. The 1 kHz test signal

eliminates potential errors introduced by thermo-electric eects across the DUT contacts

The 1 kHz ac test signal is the best solution for evaluating the internal resistance of batteries

because it avoids dc energy consumption.

High Speed Measurements

The high speed (34 ms), built-in comparator, and HP-IB/handler interfaces makes it possible

to construct a measurement system using an automatic handler and an external computer to

minimize production test time.

Auto Measurement Mode

When performing gross continuity testing where the test signal level is not a signicant

factor in the test, the auto measurement function allows the HP 4338B to select the

appropriate test signal level and measurement range.

1-2 Getting Started

HP 4338B Overview

Accessories Available

HP 16338A

HP 16064B

Test Lead Set

HP 16005B Kelvin Clip Lead (0.4 m, with large clip)

HP 16005C Kelvin IC Clip Lead (0.4 m, IC clip)

HP 16006A Pin-Type Probe Lead (0.4 m)

HP 16007A Alligator Clip Leads (0.4 m, with 2 red clips)

HP 16007B Alligator Clip Leads (0.4 m, with 2 black clips)

HP 16143B Mating Cable (0.6 m)

LED Display/Trigger Box (pass/fail display and trigger)

Getting Started 1-3

Overview HP 4338B

Front Panel

This section gives a guided tour of the HP 4338B's front panel.



For a detailed description of each key's function, see Chapter 3.



Each description starting with (Shift) is the secondary function of the key, which is available

by pressing the BLUE shift key (see 32).

Display

displays the measurement result, instrument states and messages.For more

information, see \Display".

LINE Switch

Chassis Terminal

UNKNOWN Terminals

turns the HP 4338B ON and OFF.

is connected to the instrument's chassis.

are the test ports for test xtures and test leads

is BNC.

Auto Measurement Key

Auto Measurement Indicator

enables or disables the Auto measurement function.

turns ON when Auto Measurement is enabled, and OFF

when disabled.

Measurement Parameter Key

(Shift)

Show Setting Key

(Shift)

Auto/Hold Range Key

Deviation Mode Key

changes the mode of Measurement Settings display.

Display Mode Key

selects the Auto or Hold range mode.

(Shift) Range Setup Key

10.

Left/Down Arrow Key and Right/Up Arrow Key

12.

Measurement Time Key

Averaging Key

13.

Level Key

sets the averaging rate used to average the measurement result.

selects the source output level.

sets measurement parameter to be displayed.

enables the deviation measurement function.

selects the display mode.

toggles the measurement range mode between Auto and Hold.

selects the measurement time, from Short, Medium, or Long.

. Connector type

increases or decreases setting value.

1-4 Getting Started

HP 4338B Overview

14.

Trigger Mode Key

(Shift)

15.

Trigger Key

16.

Local Key

(Shift)

17.

Recall Key

(Shift)

18.

Primary Comparator Upper Limit (Pri High) Key -

Delay Key

returns the HP 4338B to the local mode from the HP-IB remote mode.

Address Key

recalls the instrument state data from HP 4338B's internal memory.

Save Key

selects the trigger mode.

selects the trigger source from Internal, Manual, or External.

triggers a measurement when in the Manual trigger mode.

sets the HP 4338B's HP-IB address.

saves the instrument state data to the HP 4338B's internal memory.

sets the upper limit of the

comparator function for the primary comparator.

(Shift) Secondary Comparator Upper Limit (Sec High) Key

- sets the upper limit of the

comparator function for the secondary comparator.

19.

Primary Comparator Lower Limit (Pri Low) Key -

sets the lower limit of the

comparator function for the primary comparator.

(Shift) Secondary Comparator Lower Limit (Sec Low) Key

comparator function for the secondary comparator.

20.

0Key

/ (Shift)

Key Lock Key

locks out all key

input except for this key.

21.

.Key

/ (Shift)

Reset Key

resets the

HP 4338B to its default state.

22.0Key

/ (Shift)

Conguration Key

sets the

beep setting and power line frequency setting,

and executes the internal test.

23.

3Key

24.

2Key

the contact check function between ON and OFF

25.

1Key

/ (Shift)

Contact Check Key

Comparator Key

toggles

the comparator function between ON and OFF.

26.

4Key

/ (Shift)

Short Key

a SHORT correction

measurement to get correction data.

27.

5Key

28.

29.

30.

31.

7Key

8Key

6Key

9Key

/ (Shift)

Minimum Key

Maximum Key

enters the minimum value when setting a parameter.

enters maximum value when setting a parameter.

- sets the lower limit of the

32.

BLUE Shift Key

Note

activates secondary functions printed above the front-panel keys.

In this manual, the BLUE shift key is expressed as , the top of the key is

not labeled with \blue".

Getting Started 1-5

Overview HP 4338B

33.

Engineering Unit Key

34.

Back Space Key

35.

Enter Key

terminates key entry.

enters the engineering units,p,n,, m, k, and M.

erases the last entered character when entering numeric values.

1-6 Getting Started

HP 4338B Overview

Display

This section introduces the display.For a detailed description of each display eld, see

Chapter 3.

Character Display Area

displays the measurement result, setting data, and instrument

messages.

Annunciator(9

) points to the currently selected instrument setting. The label pointed to

by the annunciator is the current setting. The annunciator labels are as follows:

Measurement time

Trigger

Hold Range

indicates that the trigger mode is Internal, Manual, or External.

indicates that the HP 4338B is in the Hold range mode

shows the selected measurement time, Short, Medium or Long.

. When in the Auto

range mode, the Hold range annunciator is not displayed.

Hold level

indicates that the HP 4338B is in the Hold level mode

. When in the Auto

level mode, the Hold level annunciator is not displayed.

Comparator On

Contact Check On

Talk Only

Remote

Key Lock

Measurement Setting

indicates that the HP 4338B is in the HP-IB remote mode.

indicates that the HP 4338B's front panel keys are locked out.

indicates that comparator function is ON.

indicates that the contact check function is ON.

indicates that the HP 4338B is in the HP-IB talk only mode.

Shows the HP 4338B's settings such as test signal level, averaging

rate, etc.

Shift

annunciates that the shift toggle is active.

Getting Started 1-7

Overview HP 4338B

Rear Panel

This section gives a guided tour of the rear panel. For a detailed description of each item, see

Chapter 3.

HP-IB Interface

HP-IB bus.

HANDLER Interface

EXT TRIGGER Terminal

Serial Number Plate

Line Voltage Selector

ac power source.

Power Cord Receptacle

LINE Fuse Holder

is used to control the HP 4338B from an external controller by using the

is used to synchronize timing with an external handler

is used to input an external trigger signal.

gives the instrument's manufacturing information.

used to set the HP 4338B's line voltage setting to the voltage of the

1-8 Getting Started

HP 4338B Overview

Incoming Inspection

Warning

Inspect the shipping container for damage. If the shipping container or cushioning material

is damaged, it should be kept until the contents of the shipment have been checked for

completeness and the HP 4338B has been checked mechanically and electrically. The contents

of the shipment are as follows:

HP 4338B LCR Meter

Power Cable

Operation Manual(This Book)

User's Guide

If the contents are incomplete, if there is mechanical damage or defect, or if the analyzer does

not pass the power-on selftests, notify the nearest Hewlett-Packard oce. If the shipping

container is damaged, or the cushioning material shows signs of unusual stress

carrier as well as the Hewlett-Packard oce. Keep the shipping materials for the carrier's

inspection.

To avoid hazardous electrical shock, do not turn on the HP 4338B when

there are signs of shipping damage to any portion of the outer enclosure

(for example, covers, panel, or display)

, notify the

Ventilation Requirements

To ensure adequate ventilation, make sure that there is adequate clearance of at least 400 mm

behind, 100 mm sides and 15 mm above.

Instruction for Cleaning

For cleaning, wipe with soft cloth that is soaked with water and wrung tightly without undue

pressure.

Getting Started 1-9

Overview HP 4338B

Power Cable

In accordance with international safety standards, this instrument is equipped with a

three-wire power cable. When connected to an appropriate ac power outlet, this cable grounds

the instrument frame. The type of power cable shipped with each instrument depends on the

country of destination. Refer to Figure 1-1 for the part numbers of the power cables available.

Warning

For protection from electrical shock, the power cable ground must not be

defeated. The power plug must be plugged into an outlet that provides a

protective earth ground connection.

1-10 Getting Started

HP 4338B Overview

Figure 1-1. Power Cable Supplied

Getting Started 1-11

Preparation for Use HP 4338B

Preparation for Use

Before you use the HP 4338B, you must set the HP 4338B to match the available power line

voltage and frequency.

set line voltage | see \Power Requirements".

set line frequency | see \Turning ON the HP 4338B".

Power Requirements

The HP 4338B's power source requirements are as follows:

Power Line Voltage :

PowerLine Frequency :

Power Consumption :

100/120/220/240 Vac(610%)

47 to 66Hz

45 VA maximum

Conrm that the LINE Voltage Selector on rear panel is set to match the power line voltage

before plugging in the HP 4338B. Refer to Figure 1-2

1. Conrm that the power cable is disconnected.

2. Slide the LINE V

oltage Selector on the rear panel to match your power line voltage

. When

your power line voltage is 100/120 Vac(610%), slide the Selector to 115 V. When your power

line voltage is 220/240 Vac(610%), slide the Selector to 230 V. See Figure 1-2.

Fuse

Use the fuse shown in Table 1-1. If you require the fuse, contact the nearest Hewlett-Packard

sales oce.

The fuse can be replaced by turning the fuse holder shown in Figure 1-2 counterclockwise until

the fuse holder pops out with a minus screw driver

Figure 1-2. Voltage Selector and Fuse

Table 1-1. Line Voltage Selection

Voltage Selector Power Line

115V 100/120Vac(610%) UL/CSA type, Time delay 0.5A 250V

230V 220/240Vac(610%) UL/CSA type, Time delay 0.25A 250V

1-12 Getting Started

Required Fuse

Voltage

(HP part number 2110-0202)

(HP part number 2110-0201)

HP 4338B Preparation for Use

Turning ON the HP 4338B

1. Connect the power cable to the power cord receptacle on the rear panel.

2. Push the LINE switch in. The HP 4338B will emit a beep when it turns ON and perform the

self test. (If any message is displayed, see \Error Messages" in the back of this manual.) The

HP 4338B will be ready for operation after a message like the one shown in the following

gure is displayed.

3. Conrm that the power line frequency setting is correct.

a. Press . The following menu is displayed.

b. Press until the

A blinking item is selected.

c. If the setting does not match the ac line frequency, press

between

d. Press two times to exit this menu.

The power line frequency setting is stored and does not change after reset or on power-o.

Once you set it, you do not need to set the line frequency again as long as the same power line

frequency is being used.

50 Hz

and

Line

blinks, then Press .

60 Hz

to toggle the setting

Getting Started 1-13

Using Front-Panel Keys HP 4338B

Using Front-Panel Keys

The HP 4338B has four types of keys as follows:

Direct Execution Keys

Toggle Keys

Selection Keys

Value Setup Keys

This section describes how to use the HP 4338B's front panel keys.

Note

If you want to exit an operation and go back to the measurement display, press

several times.

Direct Execution Keys

Pressing a direct execution key will cause the pressed key's function to be performed

immediately.For example,

Press

, and the HP 4338B's front panel keys are locked out.

Toggle Keys

Pressing a toggle key will switch between several conditions

. An annunciator will indicate the

current condition. For example,

Press

, and the

Meas Time

annunciator(9) alternately points to the current setting

(Short, Med or Long).

Selection Keys

Pressing a selection key will display the selection display. The blinking item is the one

currently selected. By using

, , or the selection key itself, the selected (blinking) items

can be changed.

For example, to perform the self test,

1. Press .

2. Press to blink

3. Press

Exit

is blinking.

Test

. The self test will start immediately. After the test is nished, the HP 4338B will

display any existing error code, and return to the menu.

4. Select

Exit

and press

to exit the menu.

1-14 Getting Started

HP 4338B Using Front-Panel Keys

Value Setup Keys

Pressing the value setup keys displays the parameter entry display and prompts for you to

enter a value.For example,

1. Press and the HP 4338B displays,

The displayed value can be altered by using the following keys:

Numeric Keys

Maximum and Minimum Keys

Left/Down and Right/Up Arrow Keys

Back Space Key

Numeric Keys

Some commands use numeric parameters. A numeric parameter is the actual value used by the

HP 4338B. For example, to set the averaging rate to 10,

1. Press

2. Press .

Getting Started 1-15

Using Front-Panel Keys HP 4338B

You can also enter numeric parameters using engineering units.

1. Press

2. Press

3. Press and the engineering unit will be displayed with

displayed.

4. Press more several times and the engineering units are displayed alternately in

increasing order.

5. Press

. The comparator limit menu is displayed.

100

.For example

, and the engineering unit previously displayed will be displayed again.

100K

will

6. Press to enter the value and exit this menu.

Note

Maximum and Minimum Keys

These keys enter the maximum and minimum numeric value in place of using the numeric

keys.For example,

1. Press

2. Press to enter the value and exit this menu.

Before you press , the previous setting is still the current setting, even

though the displayed value has changed. If you press a key other than one of

the keys in ENTRY block before pressing , the setting will not change and

the displayed value will be discarded.

and you will get the maximum value of averaging rate (256).

1-16 Getting Started

HP 4338B Using Front-Panel Keys

Left/Down and Right/Up Arrow Keys

Increments or decrements numeric entry.For example,

1. Press

2. Press several times and conrm a change in value.

3. Press

Back Space Key

Erases the last entered character, and cancels the input value.For example,

1. Press

2. Press .

3. Press .

to bring up the HP-IB address setup display.

to exit the setup display.

to select comparator limit menu.

Last entered4is erased.

Getting Started 1-17

Connecting a Test Fixture HP 4338B

ToPerform a Measurement

The following procedure is commonly used to perform a measurement using the HP 4338B:

1. Conguration setup

2. Turning on the HP 4338B

3. Connecting DUT to test xture

4. Correction

5. Setting parameters

6. Measurement

This section provides the basic measurement procedure for using the HP 4338B. Follow the

instructions and get to know about the HP 4338B.

To Connect Test Fixture

To Reset HP 4338B

ToPerform Short Correction

To Select Measurement Parameter

To Select Auto Measurement Mode

To Select Measurement Range

To Set Test Voltage

Caution

Note

DO NOT apply a dc voltage exceeding642 V to UNKNOWN terminals, or input

circuit of the HP 4338B will be destroyed.

If you have any problems operating the HP 4338B, see \If Y

in Chapter 2.

ou Have a Problem"

1-18 Getting Started

HP 4338B To Reset HP 4338B

Connecting a Test Fixture

The following describes the available test xtures for the HP 4338B and their connection to the

HP 4338B.

Note

Using the HP 16338A

The HP 16338A test lead set contains four types of test leads, which are used depending on the

DUT type.

The HP 16338A Test Lead set is available for the HP 4338B. Other xtures

must NOT be used with the HP 4338B, even if the UNKNOWN terminals

physically match a test xture's connector spacing because the terminals'

conguration is dierent.

Figure 1-3. Connecting HP 16338A

Getting Started 1-19

ToPerform a SHORT Correction HP 4338B

To Reset HP 4338B

Resetting the HP 4338B sets its settings to their default states.

1. Press

2. Press to select

to select the reset menu.

Yes(Yes

blinks), then press .

The HP 4338B is now set to the default state.For more information about the default state,

refer to \Reset Key

" in Chapter 3.

ToPerform a SHORT Correction

Correction is used to cancel the residual errors of the cables and the test xture

correction cancels residual impedance in series with the DUT

. The SHORT

1. Connect the electrodes of xture to obtain a SHORT condition.

Note

The SHORT condition is obtained by using a shorting bar

, or by connecting

the test leads together.For details on making a good SHORT, see the manual

supplied with the test xture being used.

2. Press

3. Press or until

. The SHORT correction menu is displayed.

ShortMeas

blinks, and press . The SHORT correction is in

progress, and the following message is displayed.

After a short time, the HP 4338B will display the message

"Short Correction Complete"

and return to the normal display.

If the SHORT impedancejZsjis NOT less than 10  , which is unsuitable for use as the SHORT

correction data, the HP 4338B will display the following warning message

1-20 Getting Started

HP 4338B ToPerform a SHORT Correction

This is only a WARNING, the SHORT correction data will still be used. However, it is better

to conrm that the test xture's connection to UNKNOWN terminals is good and conrm

that the procedure used to perform the SHORT correction.

When the \

HP 4338B will display the following warning message. When the contact check function is

ON, the values of \9.9999E13" are stored as R and X in the MeasVal.

OVLD

", \

OVVOL

"or \

N.C.

" is displayed during the SHORT correction, the

If you select

correction data.

1. Select

SHORT correction data.

2. Press . The HP 4338B displays the secondary parameter X.

3. Press to return to the SHORT correction menu.

Note

MeasVal

When \

X values.

in the short correction menu, the HP 4338B displays the SHORT

and press

WARNING : Improper Correction

. The HP 4338B displays the primary parameter R of the

" is displayed, 99.999T are set at R,

Getting Started 1-21

To Select Measurement Range HP 4338B

To Select Measurement Parameter

1. Press

. The following menu is displayed.

2. Press or to select the dsesired parameter, then press .



R-X



R-L

Z-

To Select Auto Measurement Mode

The HP 4338B has an Auto Measurement Function which allows automatic selection of the

optimum measurement range and test signal level. To activate the auto measurement mode:

Press

The auto measurement indicator turns ON. If the

Hold Range

annunciator(9)or

Hold Level

annunciator(9) is displyed, the indicator turns o.

To Select Test Signal Level



The HP 4338B has ve test current levels | 1

addition to these selection, you can select also the auto level mode

A, 10A, 100A, 1 mA, and 10 mA. In

, in which the HP 4338B

automatically selects the optimum measurement test level. If the test level is set other than

the auto level mode, the

Hold Level

annunciator(9) is displayed.

To select the test level:

Auto

1. press

and available test signal levels are displayed.

2. Press or until the desired level blinks. If you want to select the auto level mode,

press

3. Press

or until

Auto

blinks.

1-22 Getting Started

HP 4338B To Select Measurement Range

To Select Measurement Range

Auto / Hold Range Mode

The HP 4338B has two measurement range modes,Auto and Hold. The Auto mode changes

the measurement range automatically to t the measured value. The Hold mode xes the

measurement range.

To select the range mode,

Press

In Hold range mode, the

when the

Measurement Range Setting

1. Press . Measurement range menu is displayed.

2. Press or until the desired range is displayed.

3. Press .

Note

and the

Hold Range

annunciator is not displayed.

You may nd some measurement range cannot be set because the HP 4338B has

test signal level limitations for each measurement range setting. F

Figure 3-2.

annunciator(9) is alternately displayed and turned o.

annunciator is displayed. The Auto range mode is active

or details, see

Getting Started 1-23

Operating the HP 4338B

Introduction

This chapter provides step-by-step instructions for using the HP 4338B Milliohmmeter . This

chapter includes the following sections:

Measurement Conguration

Making a measurement

Testing the HP 4338B

If You Have a Problem

Refer to Chapter 3 for the description of each front panel key function.

Operating the HP 4338B 2-1

Measurement Conguration HP 4338B

Measurement Conguration

This section discusses the HP 4338B's general conguration topics that apply to many or all

measurement functions.

To Select the Measurement Time Mode

The current measurement time mode setting (Short, Med or Long) is indicated by the

Meas Time

annunciator(9). To select the measurement time mode:

1. Press

until the measurement time mode is set to the desired mode.

To Set the Averaging Rate

To set the averaging rate :

1. Press .

2. Enter the desired value.

3. Press

to set the value and to exit.

The current setting is desplayed on the right side of the LCD display

is not displayed, press until it is displayed.

To Set the Trigger Delay or Source Delay Time

To set the trigger delay or the source delay time:

. When the current setting

1. Press

To set the trigger delay time:

Press

or until

Enter the desired value using the numeric keys

TrigDelay

blinks, and press .

, and press

When you want to exit without changing value, just press .

2-2 Operating the HP 4338B

HP 4338B Measurement Conguration

To set the source delay time:

Press or until

Enter the desired value using the numeric keys, and press .

When you want to exit without changing value, just press

To display the current setting, press

side of the LCD display.

To Set the Contact Check

The

Cont Chk

contact check function is turned ON/OFF as follows:

To turn ON the contact check function:

Press

To turn OFF the contact check function:

annunciator(9) indicates the ON/OFF state of the contact check function. The

. The Cont Chk annunciator(9) is displayed.

SourceDelay

blinks, and press .

until the setting value is displayed on the right

Press

again. The Cont Chk annunciator(9) disappears.

Operating the HP 4338B 2-3

Measurement Conguration HP 4338B

To Set the Beeper Mode

To set the beeper mode for the comparator result reporting:

1. Press

2. Select

3. Select the desired mode (

4. Select

To Save and Recall Instrument Settings

The HP 4338B can save and recall the instrument's settings

To save the current settings:

Beep

Exit

using or , and press .

Fail,PassorOff

using or , and press to exit.

) using or , and press .

1. Press

2. Enter the register number (0 to 9) that you want to save the settings into

3. Press to save.

Note

Record the register number that you saved into for further reference.

2-4 Operating the HP 4338B

HP 4338B Measurement Conguration

To recall a setting.

1. Press .

2. Enter the register number (0 to 9) that you want to recall the settings from.

3. Press to recall.

Operating the HP 4338B 2-5

Making a Measurement HP 4338B

Making a Measurement

To Trigger a Measurement

The HP 4338B has four trigger source modes: Internal, Manual, External, or Bus. The

annunciator shows which trigger source is selected.

Note

To Trigger Internally

1. Press

To Trigger Manually

1. Press until the

2. Press

To Trigger Externally

1. Connect the external trigger source to the EXT TRIGGER terminal on the HP 4338B's rear

panel.

2. Press

3. Apply a trigger signal to trigger the HP 4338B

The bus trigger mode can be set by HP-IB commands only. When the bus

trigger mode is selected, none of the Trigger annunciators are ON.

until the

when you want to trigger a measurement.

until the

Int

trigger annunciator(9) is ON.

Man

trigger annunciator(9) is ON.

Ext

trigger annunciator(9) is ON.

Trigger

2-6 Operating the HP 4338B

HP 4338B Making a Measurement

To Use the Comparator Function

The comparator function can be used to sort DUTs based on their parameter values. The

Comprtr On

To set the limit values:

1. Select the parameter to be set by pressing or for the primary parameter, and

2. Enter the value using the numeric keys, and press to enter the value.

annunciator(9) tells whether the comparator function is set to ON or OFF.

or for the secondary parameter.

Note

To start sorting:

1. Press

To display the sorting results:

Press

Select

mode, and the comparison result is displayed.

When you want to set the limits only for the lower limit or the upper limit, or

the limits only for the primary parameter or the secondary parameter, set the

unnecessary parameter to OFF using the (setting the minimum value)

or the (setting the maximum value).

. The following menu is displayed.

Comprtr

using or . The display mode is set to the comparator result display

To stop sorting:

Press .

Operating the HP 4338B 2-7

Making a Measurement HP 4338B

To Display Deviation Data

The1before the measurement parameter on the LCD display tells that the displayed value for

the parameter is the deviation value.

To Set the Reference Value

1. Press . The following menu is displayed.

2. Press or to select

To set by measuring the reference DUT:

a. Press

b. Then the secondary parameter reference setting menu (

Press

value as the secondary reference.

To set by entering a value:

a. Enter the primary parameter reference value using the numeric keys

When you want to exit without changing value, just press .

b. Enter the secondary parameter reference value using the numeric keys, and press .

regardless of the trigger mode, and the primary parameter is measured. Press

to set the measurement value as the primary reference

to measure the secondary parameter, and press to set the measurement

1RefEnt

, and press .

1Ref Secondary=

, and press

) is displayed.

When you want to exit without changing value, just press .

2-8 Operating the HP 4338B

HP 4338B Making a Measurement

To Select the Deviation Display Mode

To select the deviation display mode (

3. To select the primary parameter deviation display mode, press

press .

Press or to select

4. To select the secondary parameter deviation display mode, press or to select

and press . The same menu as the primary parameter is displayed, and you can select

the mode (

Off, 1ABSor1

Off,1ABS

%) in the same manner as the primary parameter.

Off,1

,or1%),

,or1%, and press .

or to select

Pri

, and

Sec

Operating the HP 4338B 2-9

Making a Measurement HP 4338B

To Set the Display Mode and Display Digits

If you press

or (

Off

: turns the display OFF) and press

To exit from this menu, select

If you select

using or , and press . After selecting the display digits, the HP 4338B returns to

the display mode selection menu.

Data

Digit

, the display mode selection menu appears. Select the desired mode using

: displays the measurement data,

Exit

and press .

, the display digits selection menu appears. Select the desired display digits

Comprtr

: displays the comparator results,

2-10 Operating the HP 4338B

HP 4338B Making a Measurement

To Change the Measurement Settings Display Mode

Each time

is pressed, the current settings of the HP 4338B are displayed one after

another on the right side of the LCD display. The information displayed and the order of

display is as follows:

1. Test signal level and Averaging rate

2. Trigger delay time and Source delay time

3. Comparator limits of the primary parameter

4. Comparator limits of the secondary parameter

Operating the HP 4338B 2-11

Making a Measurement HP 4338B

To Lock Out the Front Panel Keys

To lockout the keys:

Press

To unlock the keys:

Press again.

To Select the Local Mode

To return the HP 4338B to the local mode from HP-IB remote mode:

Press

To Set the HP-IB Address

1. Press

2. Enter the desired value, then press to set the value and to exit.

When you just want to show the current setting, just press .

To Print Measurement Data

To print the measurement data to an HP-IB compatible printer without using an external

controller:

1. Set the printer to listen-always mode.

2. Connect the HP-IB compatible printer to the HP 4338B's HP-IB port.

3. Turn the printer ON.

4. Set the HP 4338B's HP-IB address to 31 (talk only mode).

Press

The printer will begin printing the measurement data.

5. When you want to stop printing, change the HP 4338B's HP-IB address to an address other

than 31 (for example, 17, which is the default setting).

Press

2-12 Operating the HP 4338B

HP 4338B ToTest the HP 4338B

ToTest the HP 4338B

ToPerform a Self-Test

The HP 4338B has a self-test function to check its basic performance.

1. Press

2. Select

Test

using or , then press to execute the self test. If any error message

is displayed, refer to \Error Messages".

3. Select

Exit

and press to exit.

ToTest the Front Panel Keys' Functionality

The HP 4338B has a service function to test the functionality of the front panel keys

, the

handler interface, the ROM, the RAM, and the EEPROM. This section describes how to test

the front panel key's functionality.For the handler interface test, refer to Chapter 9 for the

procedure. The other tests are for use by service personnel only

1. Press

2. Select

Svc

using or and press .

3. Select

KEY

using ,or and press .

4. Press the front panel key that you want to test.

For example, if you want to test , then press .

When the key functions properly,

KEY CODE:5 TRIGGER

is displayed; otherwise, there will be

no such display, the key is not functioning correctly. Contact your nearest Hewlett-Packard

oce.

5. When you want to exit the front panel key test, press

6. Select

Exit

and press

to exit.

twice.

Operating the HP 4338B 2-13

If You Have a Problem HP 4338B

If You Have a Problem

If any of the problems listed below occur, follow the instructions described.

If the Display is Blank and the HP 4338B Appears Dead

If the display is blank, and even the annunciators are not ON:

Check the fuse.

If an Error Message is Displayed

Refer to \Messages."

If the HP 4338B does not Accept Any Key Input

Check whether the

Rmt

annunciator is ON.

Check whether the external controller disables all the front-panel controls by

the

LOCAL LOCKOUT

If so, send the

Press

Check whether the

command.

LOCAL

Key Lock

command from the external controller.

annunciator is ON.

Check whether the handler or the HP 16064B LED display/trigger box is connected to the

HP 4338B and it locks out the keys.

If so, unlock the keys from the handler or the HP 16064B

Press

2-14 Operating the HP 4338B

Function Reference

Introduction

This chapter provides information on all of the HP 4338B's functions.

Front Panel

Rear Panel

Theory of Operation

Function Reference 3-1

Front Panel HP 4338B

Front Panel

Figure 3-1. Front Panel

Note

In this manual, the BLUE shift key is expressed as , top of the key is not

labeled with \blue".

Display

The display has two functions | the character display and an annunciator display

The character display displays the measurement result, setting data, and instrument messages

The HP 4338B has four measurement display modes.For details on the display modes, refer to

\Display Mode Key

The annunciator (9) points to the current setting of the HP 4338B. The annunciators are:

Meas Time

Trigger

Hold Range

(Measurement Time) indicates measurement time | Short, Medium or Long.

indicates the trigger mode | Internal, Manual, or External.

shows the measurement range mode | Hold (when the annunciator is

displayed) or Auto (when the annunciator is not displayed).

Hold Level

indicates that the HP 4338B is in the Hold level mode. When in the Auto level

mode, the Hold level annunciator is not displayed.

Cmprtr On

Cont Chk

(Comparator On) indicates the comparator function is ON.

(Contact Check On) indicates the contact check function is ON.

Talk Only

(Talk Only mode) indicates the HP 4338B is performing an HP-IB input or

output data transfer.

Rmt

Key Lock

Shift

(Remote) indicates the HP 4338B is in the HP-IB remote mode.

indicates the HP 4338B's front panel keys are disabled.

indicates the secondary key functions (printed above the keys in BLUE

characters) are the active functions.

3-2 Function Reference

HP 4338B Front Panel

LINE Switch

Power ON/OFF switch. In the 1 (ON) position power is applied and all operating voltages

are applied to the instrument. In the 0 (OFF) position no power is applied and no operating

voltages are applied to the instrument.

The HP 4338B's settings are held in backup memory for 72 hours after power is turned OFF,

and are restored as the current settings when power is turned ON again within the 72 hours

period. The backed up settings are:



Auto level mode



Test signal level



Source delay



Measurement parameter



Deviation mode



Deviation reference value



Auto / Hold range mode



Measurement range setting



Measurement time



Averaging



Trigger mode



Trigger delay



Comparator ON/OFF state



High and low limit value



Display mode

Chassis Terminal

The Chassis terminal is tied to the instrument's chassis

UNKNOWN Terminals

These terminals are used to connect test xtures or test leads for measuring a DUT

. The

connector type is BNC.

Caution

DO NOT apply a dc voltage exceeding642 V to UNKNOWN terminals, or the

HP 4338B's input circuits will be destroyed.

Auto Measurement Key

The Auto Measurement key enables the Auto measurement function which allows the

HP 4338B to measure a DUT automatically using the optimum measurement range and test

signal level.

When the auto measurement function enabled, the HP 4338B is set to the auto range mode (see

\Auto / Hold range Key

") and auto level mode (see \Level Key ").

When the Auto measurement function is enabled, the Auto Measurement indicator turns ON.

Note

The Auto Measurement key doesn't disable the Auto measurement function.

And the Auto measurement function is disabled when auto range or auto level

is disabled.

Function Reference 3-3

Front Panel HP 4338B

Level Key

The level key sets the test signal level. The available test signal levels are 1Arms, 10Arms,

100Arms, 1 mArms, and 10 mArms. Figure 3-2 shows the available measurement range for

each test level.

Figure 3-2. Test Level and Measurement Range Setup

If the measurement range setting doesn't match the test signal level you choose

selects the nearest measurement range from the current setting that satises the measurement

limits for the selected test signal level.

The level key can also select the auto level mode. In the auto level mode, the test signal level

is linked to the measurement range settings as follows:

Range

Level

When the auto level mode is not selected, the Hold level annuunciator is displayed.

Note

10 k 1k 100  10  1 100 m 10 m 1m

1A 10A 100A 1mA 10 mA

The HP 4338B's test signal output is enabled when a measurement is triggered,

and disabled when the measurement is completed (See \Delay Key").

, the HP 4338B

3-4 Function Reference

HP 4338B Front Panel

Note

The peak voltage across the DUT must always be less than 20 mV. When the

peak voltage across the DUT exceeds 20 mV , the source output level goes to

0 V, and the HP 4338B displays \

OVVOL

". For details, see \Dry Circuit Loop"in

Chapter 7.

Measurement Parameter Key

The Measurement Parameter key selects the measurement parameter. The HP 4338B has the

following measurement parameters:

R (default)

R-L (series circuit)

R-X

Z-



Where,

R Resistance

L Inductance

X Reactance

Z Absolute value of Impedance



Phase Angle(deg)

Deviation Mode Key

The Deviation mode (1 mode) key selects the deviation measurement mode which displays the

dierence between the measured value a user entered nominal value and sets the nominal

value of the deviation measurement.

1 ABS mode

1 % mode

displays the dierence between the measured value and the nominal value

displays the dierence between the measurement value and the nominal value

as a percentage of the nominal value.

O

turns OFF the deviation measurement mode. (default)

Measurement Time Key

The Measurement Time key toggles the measurement time between Short, Medium, and Long.

The current setting is indicated by the

Meas Time

annunciator(9). While a Short measurement

time setting gives the shortest measurement time, a Long measurement time will give the more

accurate result. The default measurement time is Medium.

Show Setting Key

The Show Setting Key displays the current settings of the HP 4338B. The settings are

sequentially displayed on the right side of the LCD display (

time

is pressed. The following information is displayed:

Measurement Settings

area) each

Test signal level and Averaging rate

Trigger delay time and Source delay time

Comparator limits of the primary parameter

Comparator limits of the secondary parameter

Function Reference 3-5

Front Panel HP 4338B

Display Mode Key

The Display Mode key sets the HP 4338B to one of the following four display modes:

Data

Comprtr

O

Also, if you select

Digit

displays the measurement result. (default)

displays the result message of the comparator as

the upper limit),IN(passed),

N.C.

(contact check fail).

LOW

(less than the lower limit) and

HIGH

(grater than

does not display any measurement result (Display OFF).

in this menu, you can set the number of digits for the measurement

data. The available digits are 3, 4, and 5.

Average Key

The Average key sets the measurement averaging rate. The HP 4338B averages the

measurement results automatically. The averaging rate can be set from 1 to 256. The default

averaging rate is 1.

Auto / Hold range Key

The Auto/Hold range key toggles the measurement ranging mode between A

uto and Hold.

The Auto mode selects the optimum measurement range automatically within 5 measurement

cycles. The Hold mode xes the measurement range setting to the range you select. When

the Hold mode is selected, the

Hold Range

annunciator(9) will be displayed. The default

measurement range mode is Auto.

Range Setup Key

The Range setup key sets the measurement range. The available measurement range settings

are 1 m, 10 m, 100 m, 1 , 10 , 100 , 1 k, and 10 k, which are limited by test level

setting. (See Figure 3-2.)

When the measured impedance is out of range and the HP 4338B cannot measure at the

currently set range setting, \

OVLD

" is displayed.

Trigger Key

The Trigger key triggers a measurement when in the manual trigger mode. (see \Trigger Mode

Key

").

3-6 Function Reference

HP 4338B Front Panel

Trigger Mode Key

The Trigger mode key toggles three trigger mode | Internal, Manual, or External. The

HP 4338B also has a BUS trigger mode.

Internal (Int)

The internal trigger mode. In this mode measurements are free running and

continuous. (Default)

Manual (Man)

External (Ext)

The manual trigger mode. In the manual mode, the HP 4338B performs a

single measurement when the front-panel

key is pushed.

The external trigger mode. The HP 4338B is triggered by a TTL pulse input

through the rear panel External Trigger connector, or through the handler

interface.For more information, refer to \External Trigger" in \Rear

Panel".

Bus mode

(HP-IB only)

This mode is available only when in the HP-IB remote state. In the BUS

trigger mode, the

GET

and

*TRG

commands will trigger a single shot

measurement. For more information, refer to \TRIGger Subsystem"in

Chapter 5.

The mode selected is indicated by the

Trigger

annunciator(9). (In the BUS mode, the

annunciator is not displayed).

Delay Key

The Delay key sets the trigger delay time and the source delay time

. The delay time

species the time interval from the time at which the trigger occurs to the actual start of the

measurement, as shown in Figure 3-3. Each delay time can be set 0 ms to 9999 ms with 1 ms

resolution. The default delay time is 0 ms.

Figure 3-3. Source Delay and Trigger Delay

Function Reference 3-7

Front Panel HP 4338B

Local Key

The Local key returns the HP 4338B to the local mode (front-panel) operation from the HP-IB

remote mode (computer controlled). This key is the only front-panel key activated while the

HP 4338B is in the remote state.

When the HP 4338B is in the remote mode, the

Rmt

annunciator(9) will be displayed.

Address Key

The Address key sets the HP 4338B's HP-IB address. The available HP-IB addresses are the

integer numbers from 0 to 30. Address 31 is the talk only mode in which the HP 4338B sends

data through HP-IB interface.

In the talk only mode, output data is,

stat>,<data1>,<data2>,<comp1>,<comp2

Where,

stat>measured status of each channel

0 : normal

1 : overload

2 : no contact

4 : over voltage

data1>measurement data of primary parameter

data2>measurement data of secondary parameter

(Meaningless output when the secondary parameter is

none)

comp1>comparison result of primary parameter

(No output when the comparator function is OFF)

comp2>comparison result of secondary parameter

(No output when the comparator function is OFF)

(Meaningless output when the secondary parameter is

none)

1: In

2 : High

4 : Low

8 : no contact

System reset or power-on don't aect the address setting.

Save Key

The Save key stores the HP 4338B's current settings in non-volatile memory (EEPROM). The

settings saved are the same as the backup settings listed in \LINE Switch" description. You

must enter the register number, 0 to 9, to assign the register into which the settings will be

saved. Up to 10 sets of instrument settings can be saved.

Caution

The HP 4338B overwrites the instrument's setting into the assigned register

without notice, if settings are already stored in the assigned register

, the

settings will be lost when the new settings overwrite them.

3-8 Function Reference

HP 4338B Front Panel

Recall Key

The Recall key recalls instrument's setting saved in non-volatile memory (EEPROM). You must

enter the register number, 0 to 9, to assign the register from which the settings will be recalled.

If the register from which the settings are to be recalled is empty, the error message,

RECALL FAILED

" is displayed.

Primary and Secondary comparator limit Key

The comparator limit keys set the comparator high and low limit values which decides the

comparator's PASS or FAIL response.If / is pressed, the primary parameter's

lower / higher limit entry menu is displayed. If / is pressed, the secondary

parameter's lower / higher limit entry menu is displayed.

You cannot set the limit values to

OFF

from the front-panel keys, but you can by using HP-IB

commands. See \CALCulate Subsystem" in Chapter 5.

Left/Down Arrow Key and Right/Up Arrow Key

These keys serve the following functions:

While HP 4338B is displaying several items, these keys are used to select (a selected item

blinks continuously) adjacent items in the list (

selects the next item and the selects

the previous item).

0, 1,

These keys are used to enter the numeric values of the HP 4338B's settings

...

,9,0(minus), .(point) Key

...

Enter Key

The enter key terminates data input or setting value and returns to the measurement menu.

BLUE Shift Key

The BLUE Shift key is a toggle action key which activates the secondary functions whose labels

are printed above the keys.For example,

pressing instructs the instrument to display the SHORT correction menu.

The BLUE shift key function is cleared by a single execution of a shifted function or by

pressing the BLUE shift key again. The

Shift

annunciator(9) is displayed when the BLUE shift

key is toggled to the active mode.

Function Reference 3-9

Front Panel HP 4338B

Engineering units Key

The Engineering units key enters engineering units. The available engineering units are:

f (femto)

p (pico)

n (nano)



(micro)

m (milli)

k (kilo)

M (mega)

G (giga)

T (tera)

Press

, the unit is displayed in increasing order. Press , the unit is displayed in

decreasing order.

Back Space Key

The Back Space key deletes a single preceding character of an input value.

Minimum Key

The Minimum key enters the minimum value during a setting operation.

Maximum Key

The Maximum key enters the maximum value during a setting operation.

Comparator Key

The Comparator key toggles the comparator function ON and OFF

. The default comparator

function is OFF.

The Comparator distinguishes whether or not the measurement result is within the upper

and lower comparator limits for primary and secondary measurement parameter

comparator function is ON, the

Comprtr On

annunciator(9) will be displayed. The comparison

. When the

results output is assigned as follows:

Destination Condition

Comparison Display : HIGH, IN, LOW, N.C.

Handler Interface : HIGH, IN, LOW, N.C.

Beep (FAIL mode) : HIGH, LOW, N.C.

(PASS mode) :IN

Where,

HIGH greater than the upper limit

IN between the upper limit and the lower limit

LOW less than the lower limit

N.C. contact check failed

When measurement parameter changes, the comparator function is automatically turned OFF

3-10 Function Reference

HP 4338B Front Panel

Contact Check Key

The contact check key toggles the contact check function ON and OFF. This function monitors

whether the DUT is properly connected to the measurement terminals. When the no-contact is

detected, the HP 4338B displays \

When the contact check function is ON, the

N.C.

". The default state is OFF.

Cont Chk

annunciator(9) will be displayed.

Short Key

The Short key executes the SHORT correction function. The SHORT correction measurement

must be performed when the high terminal and low terminals are directly shorted together or

with a low-impedance, high-quality shorting device. The HP 4338B takes measurement data

under these conditions and uses the correction data to cancel measurement errors due to the

residual impedance of cable and test xture. The correction data is stored in non-volatile

memory(EEPROM).

Press



ShortMeas



MeasVal



Exit

If the short impedance,jZsj, is NOT less than 10 , the HP 4338B displays

WARNING: Out Of Limit

, the following SHORT correction menu is displayed.

Performs the SHORT correction.

Displays the SHORT correction data (R, X).

Exits the menu.

This is only a WARNING, the SHORT correction data will still be used.

When the \

will display,\

values of \9.9999E13" are stored as R and X in the MeasV

OVLD

", \

OVVOL

"or \

N.C.

" is displayed during the SHORT correction, the HP 4338B

WARNING: Improper Correction

". When the contact check function is ON, the

al.

At reset, the correction data is cleared.

You cannot enable or disable the correction function without discarding the correction data

when using the HP 4338B's front-panel keys, but you can by using HP-IB commands. See

\[:SENSe]:CORRection[:STATe]fONjOFFj1j0g" in Chapter 5.

Key Lock Key

The Key Lock key toggles disabling and enabling key input from the front panel. When the key

input is disabled, the

Key Lock

annunciator(9) will be displayed.

To cancel the key lock state, press this key again.

Note

The key lock state can also be controlled through the handler interface

. When

the handler key lock function controls the key lock states, all the front-panel

keys are locked out, including

, so you can only cancel the key lock out

state from the handler.

Function Reference 3-11

Front Panel HP 4338B

Reset Key

The Reset key resets the HP 4338B to the default state. The default states are following:

Auto measurement :ON(Auto range and Auto level mode is enabled)

Source delay :0ms

Measurement parameter :R

Deviation measurement : OFF

Measurement time : MEDium

Averaging :1

Trigger mode : Internal

Trigger delay :0ms

Comparator : OFF

Display mode : Measured data

Display digits :5

Beep :FAIL Beep

Short correction data : Cleared

Contact Check : OFF

Conguration Key

The Conguration key is used to set the beep mode and the power line frequency setting, and

to run the performance tests.

Beep

| Comparison results output to the beeper are classied as follows:

Off

Pass

Fail

In the beeper

operation error occurs. In the beeper

no output to beeper.

emits a beep when the comparison result is IN.

emits a beep when the comparison result is HI, LO

PassorFail

mode, the HP 4338B emits a beep whenever a system error or an

Off

mode, the error beep is turned OFF.

. (default)

The setting is saved into EEPROM.

Line

|Available power line frequency selections are 50 Hz and 60 Hz.

The power line frequency setting is stored and does not change after reset or power-o.

Once you set it, you do not need to set the line frequency again as long as the power line

frequency remains the same.

Svc

| There are ve service functions.

KEY

HNDL

CSUM

RAM

test front-panel keys.

test the handler output signal.

run ROM check sum program.

read-write test RAM. After the test, the HP 4338B resets the instrument's

settings.

EEPROM

test EEPROM. The data stored in EEPROM is not aected if no error is

detected. If the error is detected, the HP 4338B clears the data and restores the

default data.

Test

performs the self-test which tests the HP 4338B's basic performance and displays the

results as the sum of all existing error codes

3-12 Function Reference

HP 4338B Front Panel

item result error code

1. Beeper beep once -

2. Display display all digits and segments -

3. RAM display error message if fail

4. EPROM display error message if fail

5. Calibration data (EEPROM) display error message if fail

6. User's data (EEPROM) display error message if fail

7. A/D converter display error message if fail

8. Backup RAM display error message if fail

During the power-on test, the HP 4338B suspends operation if an error occurs

During the power-on test, the HP 4338B uses its default setting, and continues with the test.

The self-test is also executed at power-on. After the test, the HP 4338Bs settings are not

aected.

Exit

return to measurement.

Function Reference 3-13

Rear Panel HP 4338B

Rear Panel

Figure 3-4. Rear Panel

External Trigger

The EXT TRIGGER Terminal is used to input an External trigger signal. When the HP 4338B

is set to the External trigger mode, the HP 4338B is triggered on the active-low to high rising

edge of a TTL level input pulse. Figure 3-5 shows the specications required of the TTL pulse

Figure 3-5. Required External Trigger Pulse Specication

3-14 Function Reference

HP 4338B Rear Panel

LINE Fuse Holder

Fuse holder for the HP 4338B's line fuse. The required fuse is selected depending on LINE

Voltage Selector selection. Refer to Table 3-1.

LINE Voltage Selector

The Line Voltage Selector switches the ac power source voltage selection. This is used to match

the HP 4338B to the ac operating voltage being used. The line voltage selection is as follows:

Table 3-1. Line Voltage selection

Voltage Selector Line Voltage Required Fuse

115V 100/120Vac(610%) UL/CSA type, Time delay 0.5A 250V

(HP part number 2110-0202)

230V 220/240Vac(610%) UL CSA type, Time delay 0.25A 250V

(HP part number 2110-0201)

Serial Number Plate

The serial number plate gives manufacturing information about the HP 4338B. F

\Serial Number" in Appendix A.

Power Cord Receptacle

The Power Cord Receptacle is used to plug in the power cord.

Power Code

The HP 4338B is equipped with a three-conductor power cord that, when plugged into the

appropriate AC power receptacle, grounds the instrument. The oset pin on the power cord is

the safety ground.

or details, see

Function Reference 3-15

Rear Panel HP 4338B

Handler Interface

Specication

Output signal: Negative true, open collector, opto-isolated

Decision Output:

Primary parameter Comparator High, In, Low

Secondary parameter Comparator High, In, Low

Contact check failed (N.C.).

Voltage across the DUT exceeds 20 mV, and source output goes to 0 V.

Index: Analog measurement complete

Measurement complete: Full measurement complete

Alarm: Notication that a momentary power failure was detected.

Input Signal: Opto-isolated

Keylock: Front panel keyboard lockout

External Trigger: Pulse width1s

Note

The comparator output signals High, In, Low, and the control signals /INDEX,

/EOM are available when the comparator function is ON. And the contact

check output signal N.C. is available when both the comparator and contact

check functions are ON.

Figure 3-6. Pin Assignment For Handler Interface Connector

3-16 Function Reference

HP 4338B Rear Panel

Table 3-2. Contact Assignment for Comparator Function

Pin No. Signal Name

EXT DCV1

External DC Voltage 1:

DC Voltage supply pins for DC isolated open collector outputs (/PHI, /SHI, /PIN,

/SIN, /PLO, /SLO). The maximum voltage is +24V, the minimum +5V.

18 /KEY LOCK Key Lock:

When this line is asserted, all of the HP 4338B's front panel key functions are

disabled.

19 /EXT TRIG External Trigger:

HP 4338B is triggered on the rising edge of a pulse applied to this pin when the

trigger mode is set to External.

EXT DCV2

External DC voltage 2:

DC voltage supply pins for DC Isolated inputs (/EXT TRIG, /KEY LOCK) and DC

Isolated outputs (/ALARM, /INDEX, /EOM). Maximum voltage is +15V, minimum

+5V.

+5 V

COM1

Internal voltage supply (max. output 0.1 A):

Exceeding 0.1 A will cause the internal voltage to go to 0 V.

Common for EXT DCV1.

28 /PHI Primary Parameter High:

The comparison result of primary parameter is HIGH.

29 /PIN Primary Parameter In:

The comparison result of primary parameter is IN.

30 /PLO Primary Parameter Low:

The comparison result of primary parameter is LOW.

31 /SHI Secondary parameter High:

The comparison result of secondary parameter is HIGH.

32 /SIN Secondary parameter In:

The comparison result of secondary parameter is IN.

33 /SLO Secondary parameter Low:

The comparison result of secondary parameter is LOW.

38 /OVVOL, or Over Voltage:

The test voltage across the DUT is exceeding 20 mV and source voltage output

goes to 0 V.

/N.C. No Contact:

Contact check failed.

42 /ALARM Alarm:

This signal is asserted on POWER DOWN of the HP 4338B. The signal length is

200 ms.

43 /INDEX Index:

This signal is asserted when an analog measurement is complete and the HP 4338B

is ready for the next DUT to be connected to the UNKNOWN terminals. The

measurement date, however, is not valid until /EOM is asserted.

44 /EOM End of Measurement:

This signal is asserted when the measurement data and comparison results are

valid.

COM2

GND

Common for EXT DCV2.

Ground tied to chassis.

Description

The / (slash) means that the signal is asserted when low

Function Reference 3-17

Rear Panel HP 4338B

Figure 3-7. Timing Diagram

HP-IB Interface

HP-IB Interface is used for remote control of the HP 4338B using the Hewlett-P

Interface Bus(

HP-IB is an instrument interface standard which supports worldwide standards IEEE 488.1,

IEC-625, IEEE 488.2, and JIS-C1901. The HP-IB interface allows the instrument to be

controlled by an external computer that sends commands or instructions to and receives

data from the instrument via HP-IB. It also denes handshaking, addressing, and the general

protocol used for transmitting individual bytes of data between instruments and a controller

With an HP-IB system, many dierent types of devices including instruments

plotters, and printers can be connected in parallel. When conguring an HP-IB system, the

following restrictions must be adhered to:

The length of cable between two devices must be less than or equal to four meters. The total

length of cable in one bus system must be less than or equal to two meters times the number

of devices connected on the bus (the HP-IB controller counts as one device) and the total

length of cable must not exceed 20 meters.

A maximum of 15 devices can be connected on one bus system.

hp-ib

ackard

, computers,

3-18 Function Reference

HP 4338B Rear Panel

There are no restrictions on how the cables are connected together. However,itis

recommended that no more than four piggyback connectors be stacked together on any one

device. The resulting structure could exert enough force on the connector mounting to

damage it.

Every HP-IB device has a unique address for identication. The available HP-IB addresses are

the integer values 0 to 30. Any device on an HP-IB bus must have a unique address otherwise

there will be bus contention as devices with the same address try to use the bus at the same

time.

Every HP-IB device must be capable of performing one or more of the following interface

functions:

Talker A talker sends device-dependent data when it is addressed to talk. In an HP-IB

system, there can be only one active talker at any given time.

Listener A listener receives device-dependent data when addressed to listen. In a HP-IB

system, there can be any number of active listener at any given time.

Controller A controller manages the operation of the bus and addresses talker's and

listener's. In an HP-IB system, there can be only one active controller at any

given time.

Table 3-3 lists the HP 4338B's HP-IB capability and functions

. These functions provide the

means for an instrument to receive, process, and transmit commands, data, and status over the

HP-IB bus.

Table 3-3. HP-IB Interface Capability

Code Function

SH1 Complete Source Handshake capability

AH1 Complete Acceptor Handshake capability

T5 Basic Talker; serial poll; unaddressed if MLA; Talk-Only

L4 Basic Listener; unaddressed if MTA; no Listen Only

SR1 Service Request capability

RL1 Remote/Local capability

DC1 Device Clear capability

DT1 Device Trigger capability

C0 No Controller capability

E1 Drivers are open-collector

Function Reference 3-19

Theory of Operation HP 4338B

Theory of Operation

This section discusses the HP 4338B's theory of operation.

Overall Measurement Theory

The HP 4338B measures Device Under Test(

Figure 3-8. Denition of Impedance

dut

) impedance in the following manner:

Figure 3-8 shows the Impedance denition. If the current through the DUT is I when test

voltage V is applied across the DUT, the DUT's impedance Z is expressed by,

Impedance, Z contains a real and an imaginary part. Figure 3-9 shows vector representation of

impedance.

Figure 3-9. Vector Representation of Impedance

3-20 Function Reference

HP 4338B Theory of Operation

In Figure 3-9,

R : resistance

X : reactance

jZj



The HP 4338B measures the DUT's impedance, Z, which is a vector value, and gives the result

in the following measurement parameters:

R : resistance

X : reactance

L : inductance

Z(jZj) : magnitude of impedance



These parameters represent the DUT's electrical characteristics as Figure 3-10.

: magnitude of impedance

: phase of impedance

Figure 3-10. Relationship between Measurement Parameters

Function Reference 3-21

Theory of Operation HP 4338B

Test Signal Level

Actual Signal Level across DUT

Most components have impedance characteristics that are dependent on the applied signal

level. So, the test level setting must be set appropriate for the DUT.

Figure 3-11. Simplied Model of HP 4338B

Figure 3-11 shows a simplied model of the HP 4338B. The HP 4338B can select test current

levels of, 1A, 10A, 100A, 1mA, and 10 mA. The selection of test signal level decides the

HP 4338B's test voltage source level, Vs, and its source resistance,Rs, as follows:

Table 3-4. Source Voltage and Source Resistance

Level

1A 10A 100A 1mA 10 mA

11mV 110mV

11110 1110 110 10.1 10.1 

The signal level across the DUT depends on the test voltage source level, Vs, the source

resistance of the HP 4338B, Rs, and the impedance of the DUT,R

Rs+R

DUT

If the DUT's resistance is low enough to be assumed as 0 when compared with Rs

, as follows:

DUT

, the test

current level, I, will be close to the selected level. If DUT's resistance is high and cannot be

assumed to be 0 when compared with Rs, the test signal level will dier from the selected

test signal level. For example, to measure resistance 20 , with a 100A test signal level, the

actual signal level across the DUT will be 85A(

110+20

Limitation of Test Level

The HP 4338B automatically sets the test signal level to 0 V when the test voltage across the

DUT exceeds 20 mV. For more information, see \Dry Circuit Loop" in Chapter 7.

3-22 Function Reference

Remote Operation

Introduction

This chapter provides step-by-step instructions for controlling the HP 4338B using HP-IB

remote mode. The examples in this manual use the HP 9000 series 200 or 300 BASIC language.

This chapter covers the following:

Getting started

Setting up the HP 4338B

Triggering a measurement

Retrieving measurement data

Other features

If you have a problem

Refer to Chapter 5 for the description of each HP-IB command.

Note

This chapter is not intended to teach BASIC programming language or the

Standard Commands for Programmable Instruments (SCPI) programming, or to

discuss HP-IB theory; refer to the following documents which are better suited

for these tasks.

For more information concerning BASIC, refer to the manual set for the

BASIC version being used:

BASIC Programming Techniques

BASIC Language Reference

For more information concerning SCPI, refer to the following:

Beginner's Guide to SCPI

For more information concerning HP-IB operation, refer to the following:

BASIC Interfacing Techniques

Tutorial Description of the Hewlett-Packard Interface Bus

Condensed Description of the Hewlett-Packard Interface Bus

Remote Operation 4-1

Getting Started HP 4338B

Getting Started

This section will teach you the basics of operating the HP 4338B in the HP-IB remote mode

(from now just referred to as remote). This includes reading the HP-IB address, sending a

command to the HP 4338B, and retrieving data from the HP 4338B.

Input/Output Statements

The statements used to operate the HP 4338B in remote depend on the computer and the

programming language being used. In particular, you need to know the statements the language

uses to input and output information. For example, the input statements for the HP 9000 series

200 or 300 BASIC language are:

ENTERorTRANSFER

The output statement is:

OUTPUT

Read your computer manuals to nd out which statements you need to use.

Reading the HP-IB Address

Before you can operate the HP 4338B in remote

setting=17). To check the address, press

, you need to know its HP-IB address (factory

. A typical display is:

The displayed response is the device address. When sending a remote command, you append

this address to the HP-IB interface's select code (normally 7). F

or example, if the select code is

7 and the device address is 17, the appended combination is 717.

Every device on the HP-IB bus must have a unique address

.You can assign new HP-IB

addresses.

Sending a Remote Command

To send a remote command to the HP 4338B, combine the computer's output statement with

the HP-IB select code, the device address, and nally the HP 4338B command. For example,to

reset the HP 4338B, send:

OUTPUT 717;"*RST"

Notice that the

Rmt

annunciator(9) is ON. This means the HP 4338B is in the remote mode.

4-2 Remote Operation

HP 4338B Getting Started

Returning to the Local Mode

When you press a key on the HP 4338B's keyboard while operating in remote, the HP 4338B

does not respond. This is because the HP 4338B is in remote (as indicated by the display's

annunciator) and is ignoring all front panel inputs but the

the Local mode, press the

Query Commands

There are several commands in the alphabetic command directory that end with a question

mark. These commands are called query commands because each returns a response to a

particular question.

In addition to the queries described above, you can create others by appending a question mark

to most commands.

Getting Data from the HP 4338B

The HP 4338B can output readings and responses to query commands. As an example, have the

HP 4338B generate a response to a query command by sending:

OUTPUT 717;"*IDN?"

When you send a query from remote, the HP 4338B does not display the response as it did

when you executed the command from its front panel. Instead, the HP 4338B sends the

response to its output buer. The output buer is a register that holds a query response or

data for a single measurement until it is read by the computer or replaced by new information.

Use the computer's input statement to get the response from the output buer

the following program reads the response (HP 4338B) and prints it.

key.To return the HP 4338B to

.For example,

Rmt

10 ENTER 717;A$

20 PRINT A$

30 END

Remote Operation 4-3

Getting Started HP 4338B

To Control the HP 4338B from an External Computer

Most measurements can be modeled on the following simple three step sequence:

1. Set up the instrument.

Typically, you begin the setup step by sending

*RST

to set the instrument to its default

settings. Next, if you need values dierent from the default settings, change the settings

one by one as required.

2. Trigger the measurement.

The trigger may be generated automatically by steps taken in your setup commands, or you

can send an explicit trigger command. To select the trigger source, send the

command with the trigger source parameter. When you select

sending

*TRG

triggers a measurement and retrieves the measurement data.

BUS

as the trigger source,

:TRIG:SOUR

3. Retrieving the data.

The following sections describes how to perform the tasks at each step.

Figure 4-1 shows a simple capacitance measurement program.

! Step 1

OUTPUT 717;"*RST"

OUTPUT 717;":INIT:CONT ON"

OUTPUT 717;":CALC1:FORM REAL"

OUTPUT 717;":CALC2:FORM NONE"

OUTPUT 717;":TRIG:SOUR BUS"

Resetting

Initiating trigger system

Primary parameter: R

Secondary parameter: None

Trigger source: Bus

! Step 2

OUTPUT 717;"*TRG"

Triggering

! Step 3

ENTER 717;S,D1,D2

Retrieving data

4-4 Remote Operation

Figure 4-1. Simple Program Example

HP 4338B To Set Up the HP 4338B

To Set Up the HP 4338B

To Reset the HP 4338B

The following commands reset the HP 4338B:

*RST

:SYST:PRES

*RST

Note

resets the trigger system also.

For example,

OUTPUT 717;"*RST"

To Set the LINE Frequency

The following command sets the LINE frequency:

:SYST:LFR

For example, to set the LINE frequency to 50 Hz,

OUTPUT 717;"SYST:LFR 50"

ToPerform the SHORT Correction

The following commands perform the SHORT correction:

:SENS:CORR:COLL STAN2

:SENS:CORR

For example, to perform the SHORT correction,

OUTPUT 717;":SENS:CORR:COLL STAN2"

OUTPUT 717;"*OPC?"

ENTER 717;A

To Select the Measurement Parameter

The following commands select the measurement parameter:

:CALC1:FORM

:CALC2:FORM

For example, to select the R only mode,

OUTPUT 717;":CALC1:FORM REAL"

OUTPUT 717;":CALC2:FORM NONE"

For example, to select the R-X mode,

OUTPUT 717;":CALC1:FORM REAL"

OUTPUT 717;":CALC2:FORM IMAG"

Remote Operation 4-5

To Set Up the HP 4338B HP 4338B

For example, to select the R-L mode,

OUTPUT 717;":CALC1:FORM REAL"

OUTPUT 717;":CALC2:FORM LS"

For example, to select the Z-6mode,

OUTPUT 717;":CALC1:FORM MLIN"

OUTPUT 717;":CALC2:FORM PHAS"

To Select the Auto Measurement Mode

The following commands select the auto measurement mode:

:SOUR:CURR:RANG:AUTO

:SENS:FIMP:RANG:AUTO

For example,

OUTPUT 717;":SOUR:CURR:RANG:AUTO ON"

OUTPUT 717;":SENS:FIMP:RANG:AUTO ON"

To Select the Measurement Range

The following commands select the measurement range:

:SENS:FIMP:RANG

:SENS:FIMP:RANG:AUTO

For example, to select the auto range mode,

OUTPUT 717;":SENS:FIMP:RANG:AUTO ON"

For example, to select the 1  range,

OUTPUT 717;":SENS:FIMP:RANG:AUTO OFF"

OUTPUT 717;":SENS:FIMP:RANG 1"

To Select the Test Signal Level

The following commands select the test signal level:

:SOUR:CURR

:SOUR:CURR:AUTO

For example, to select the auto level mode,

OUTPUT 717;":SOUR:CURR:AUTO ON"

For example, to select 100A,

OUTPUT 717;":SOUR:CURR:AUTO OFF"

OUTPUT 717;":SOUR:CURR 1E-4"

To Set the Measurement Time Mode

The following command sets the measurement time mode:

:SENS:FIMP:APER

To set the measurement time to SHORT,

OUTPUT 717;":SENS:FIMP:APER 0.034"

To set the measurement time to MEDIUM,

OUTPUT 717;":SENS:FIMP:APER 0.07"

4-6 Remote Operation

HP 4338B To Set Up the HP 4338B

To set the measurement time to LONG,

OUTPUT 717;":SENS:FIMP:APER 0.9"

To Set the Averaging Rate

The following commands set the averaging rate:

:SENS:AVER

:SENS:AVER:COUN

For example, to set the averaging rate to 4,

OUTPUT 717;":SENS:AVER 4"

To Set the Delay Time

The following commands set the delay time:

:TRIG:DEL

:TRIG:SEQ2:DEL

For example, to set the trigger delay time to 10 ms,

OUTPUT 717;":TRIG:SEQ2:DEL 1E-2"

For example, to set the source delay time to 10 ms

OUTPUT 717;":TRIG:DEL 1E-2"

To Set the Beeper Mode

The following commands set the beeper mode:

:CALC{1|2}:LIM:BEEP

:CALC{1|2}:LIM:BEEP:COND

:SYST:BEEP

:SYST:BEEP:STAT

For example, to set the beeper mode to emit a beep when the comparison result is P

OUTPUT 717;":CALC1:LIM:BEEP PASS"

ASS.

Remote Operation 4-7

To Set Up the HP 4338B HP 4338B

To Use Comparator Function

The following commands control the comparator function:

:CALC{1|2}:LIM:CLE

:CALC{1|2}:LIM:FAIL?

:CALC{1|2}:LIM:LOW

:CALC{1|2}:LIM:LOW:STAT

:CALC{1|2}:LIM:UPP

:CALC{1|2}:LIM:UPP:STAT

:CALC{1|2}:LIM:STAT

f1j2g

shows that one of the two numbers is attached to the root mnemonic; 1 means the

primary parameter and 2 means the secondary parameter.

For example, to set the limit values for the primary parameter, and to enable the comparator

function,

OUTPUT 717;":CALC1:LIM:LOW 1E-2; UPP 1E-1"

OUTPUT 717;":CALC1:LIM:STAT ON"

To Display a Deviation Measurement

The following commands displays a deviation measurement:

:DATA

:CALC{1|2}:MATH:EXPR:NAME

:CALC{1|2|:MATH:EXPR:CAT?

:CALC{1|2}:MATH:STAT

f1j2g

shows that one of the two numbers is attached to the root mnemonic; 1 means the

primary parameter and 2 means the secondary parameter.

For example, to set the reference values using the measured values

, and to calculate the

absolute value of deviation for the primary parameter,

OUTPUT 717;":FETC?"

ENTER 717;s,d1,d2

OUTPUT 717;":DATA REF1,";d1

OUTPUT 717;":CALC1:MATH:EXPR:NAME DEV"

OUTPUT 717;":CALC1:MATH:STAT ON"

ToWait Until Previously Sent Commands are Completed

The following commands make the HP 4338B wait until the previously sent commands are

completed:

*OPC

*OPC?

*WAI

For example, to wait until the OPEN correction is completed,

OUTPUT 717;":SENS:CORR:COLL STAN2"

OUTPUT 717;"*OPC?"

Perform SHORT Correction

Wait for Open Correction completed

ENTER 717;A

4-8 Remote Operation

HP 4338B To Set Up the HP 4338B

To Get the Current Instrument Settings

The following command gets the current instrument settings:

*LRN?

For example,

DIM A$[1000]

OUTPUT 717;"*LRN?"

ENTER 717;A$

PRINT A$

To Save and Recall Instrument Settings

The following commands save and recall instrument settings:

*SAV

*RCL

To save the instrument settings to register no.1,

OUTPUT 717;"*SAV 1"

To recall the instrument settings from register no.1,

OUTPUT 717;"*RCL 1"

Remote Operation 4-9

To Trigger a Measurement HP 4338B

To Trigger a Measurement

The following commands are used to trigger measurements from an external controller and

to handle the HP 4338B's trigger system. Refer to \Trigger System" in Chapter 5 for the

information about the HP 4338B's trigger system.

:TRIG

:TRIG:SOUR

:INIT

:INIT:CONT

:ABOR

*TRG

:FETC?

Group Execution Trigger (GET)

For example, to set the Internal trigger mode:

OUTPUT 717;":TRIG:SOUR INT"

OUTPUT 717;":INIT:CONT ON"

LOOP

OUTPUT 717;":FETC?"

ENTER 717;S,D1,D2

PRINT S,D1,D2

END LOOP

For example, to set to the Manual trigger mode:

OUTPUT 717;":STAT:OPER:ENAB 16"

OUTPUT 717;"*SRE 128"

ON INTR 7 GOSUB Data_available

ENABLE INTR 7;2

OUTPUT 717;":TRIG:SOUR MAN"

OUTPUT 717;":INIT:CONT ON"

LOOP

LOCAL 717 ! Press the Trig key.

END LOOP

Data_available: !

OUTPUT 717;":FETC?"

ENTER 717;S,D1,D2

PRINT S,D1,D2

A=SPOLL(717)

OUTPUT 717;":STAT:OPER?"

ENTER 717;A

ENABLE 7;2

RETURN

4-10 Remote Operation

HP 4338B To Trigger a Measurement

For example, to set to the External trigger mode:

OUTPUT 717;":STAT:OPER:ENAB 16"

OUTPUT 717;"*SRE 128"

ON INTR 7 GOSUB Data_available

ENABLE INTR 7;2

OUTPUT 717;":TRIG:SOUR EXT"

OUTPUT 717;":INIT:CONT ON"

LOOP ! Apply trigger signals from the external trigger source.

END LOOP

Data_available: !

OUTPUT 717;":FETC?"

ENTER 717;S,D1,D2

PRINT S,D1,D2

A=SPOLL(717)

OUTPUT 717;":STAT:OPER?"

ENTER 717;A

ENABLE 7;2

RETURN

For example, to set to the Bus trigger mode:

Using the

*TRG

IEEE 488.2 Common Command,

OUTPUT 717;":TRIG:SOUR BUS"

OUTPUT 717;"*TRG"

ENTER 717;S,D1,D2

Using the Group Execution Trigger (GET):

OUTPUT 717;":TRIG:SOUR BUS"

TRIGGER 717

ENTER 717;S,D1,D2

For example, triggering a measurement regardless of the trigger source:

OUTPUT 717;":TRIG"

OUTPUT 717;":FETC?"

ENTER 717;S,D1,D2

Remote Operation 4-11

To Retrieve Data Eciently HP 4338B

To Retrieve Data Eciently

The basic procedure to retrieve measurement is described in \To Trigger a Measurement". This

section describes how to retrieve the measurement data eciently.

To Transfer Data Using the Real Data Format

The following command transfers data faster by using the real data format:

:FORM REAL

For example,

ASSIGN @Binary TO 717;FORMAT OFF

OUTPUT 717;":FORM REAL"

OUTPUT 717;":FETC?"

ENTER @Binary USING "#,4A";A$

ENTER @Binary;S,D1,D2

ENTER @Binary USING "#,A";A$

PRINT S,D1,D2

To Use a Data Buer

The following commands use the data buer function:

:DATA?

:DATA:POIN

:DATA:FEED

:DATA:FEED:CONT

For example,

OPTION BASE 1

DIM D(600)

OUTPUT 717;":TRIG:SOUR BUS"

OUTPUT 717;":DATA:POIN BUF1,200"

OUTPUT 717;":DATA:FEED BUF1,`CALC1'"

OUTPUT 717;":DATA:FEED:CONT BUF1,ALW"

FOR I=1 TO 200

OUTPUT 717;":TRIG"

NEXT I

OUTPUT 717;":DATA? BUF1"

ENTER 717;D(*)

PRINT D(*)

4-12 Remote Operation

HP 4338B Other Features

Other Features

To test the HP 4338B

The following command performs the internal self test.

*TST?

For example,

OUTPUT 717;"*TST?"

ENTER 717;A

IF A<>0 THEN PRINT "Self Test: Error"

To Report the Instrument's Status

The following commands report the instrument's status.

*CLS

*ESE

*ESR?

*SRE

*STB?

:STAT:OPER?

:STAT:OPER:COND?

:STAT:OPER:ENAB

:STAT:QUES?

:STAT:QUES:COND?

:STAT:QUES:ENAB

:STAT:PRES

HP BASIC

SPOLL

command

For example, to generate a service request whenever an error is placed in the error queue

OUTPUT 717;"*ESE 52; *SRE 32"

For example, to detect the completion of the actual measurement,

OUTPUT 717;":SYST:OPER:ENAB 16"

OUTPUT 717;"*SRE 128"

REPEAT

A=SPOLL(717)

Enable Measuring bit

Enable Operation Status Register Summary bit

Wait until Operation Status Register Summary bit

is set

UNTIL BIT(A,7)

Remote Operation 4-13

Other Features HP 4338B

For example, to generate an interrupt when an error occurs in the HP 4338B.

DIM Err$[50]

OUTPUT 717;"*CLS"

OUTPUT 717;"*ESE 48"

OUTPUT 717;"*SRE 32"

Clears status byte register

Sets Command Error Bit and Execution Error Bit

Sets Standard Event Status Register Summary Bit

ON INTR 7 GOSUB Err_report

ENABLE INTR 7;2

Tells where to branch to when interrupted

Enable an interrupt from HP-IB interface

LOOP

END LOOP

STOP

Err_report:!

Stat=SPOLL(717)

OUTPUT 717;"*ESR?"

Clears the SRQ bit of the Status Byte

Asks contents of the Standard Event Status Register

ENTER 717;Estat

PRINT "Syntax Error detected."

OUTPUT 717;":SYST:ERR?"

Asks to output error number and message

ENTER 717;Err,Err$

PRINT Err,Err$

ENABLE INTR 7

RETURN

END

4-14 Remote Operation

HP 4338B If You Have a Problem

If You Have a Problem

Check all HP-IB addresses and connections; most HP-IB problems are caused by an incorrect

address and bad or loose HP-IB cables.

If the HP 4338B Hangs Up When You Send

Send the device clear command to the HP 4338B.

For example,

CLEAR(717)

ABORt

Command

Remote Operation 4-15

HP-IB Reference

Introduction

This chapter provides the reference for the HP-IB commands used to control the HP 4338B in

the HP-IB remote mode.

HP-IB Commands

Status Reporting Structure

Trigger System

Data Transfer Format

The HP 4338B can be operated using the Hewlett-Packard Interface Bus(

corresponds to the Standard Commands for Programmable Instruments(

hp-ib

). HP-IB

scpi

). SCPI is the

instrument command language for controlling instrument that goes beyond IEEE 488.2 to

address a wide variety of instrument functions in a standard manner

HP-IB Commands

Commands can be separated into two groups: common commands and subsystem commands

Common Commands

Common commands are generally not measurement related, but are used to manage macros

status registers, synchronization, and data storage. All common commands begin with an

asterisk. Common commands are dened in the IEEE 488.2 standard.

Common Commands

*CLS

*ESE

*ESE?

*ESR?

*IDN?

*LRN?

numeric value

*OPC

*OPC?

*OPT?

*RCL

*RST

*SAV

numeric value

*SRE

numeric value

*SRE?

*STB?

*TRG

*TST?

*WAI

Subsystem Commands

Subsystem commands include all measurement functions and some general purpose functions.

Each subsystem is a set of commands that roughly corresponds to a functional block inside the

instrument. For example, the SOURce subsystem contains commands for signal generation,

while the STATus subsystem contains commands for accessing status registers.

Subsystem commands have a hierarchical structure, called a

several key words separated by a colon between each word.

command tree

, which consist of

HP-IB Reference 5-1

HP-IB Commands HP 4338B

Subsystem Commands

Command Parameter Note

ABORt no query

CALCulatef1j2

:FORMat

REALjMLINearjNONEjIMAGinaryjPHASejLS

:LIMit

:BEEPer

:CONDition

[:STATe]

FAILjPASS

Boolean

:CLEar no query

:FAIL? query only

:LOWer

[:DATA]

:STATe

numeric value

Boolean

:UPPer

[:DATA]

:STATe

numeric value

Boolean

:MATH

:EXPRession

:CATalog? query only

:NAME

:STATe

DEVjPCNT

Boolean

:PATH? query only

DATA

[:DATA]

[:DATA]?

:FEED

:CONTrol

:POINts

REF1jREF2g,<numeric value

BUF1jBUF2

BUF1jBUF2g,<data handle

BUF1jBUF2g,fALWaysjNEVer

BUF1jBUF2g,<numeric value

query only

DISPlay

[:WINDow]

[:STATe]

Boolean

:TEXT1

:DIGit

:PAGE

f3j4j5g

f1j2g

:TEXT2

:PAGE

f1j2j3j4g

FETCh? query only

FORMat

[:DATA]

ASCiijREAL[,64]

INITiate

:CONTinuous

Boolean

[:IMMediate] no query

[SENSe]

:AVERage

:COUNt

[:STATe]

numeric value

Boolean

5-2 HP-IB Reference

HP 4338B HP-IB Commands

Subsystem Commands (continued)

Command Parameter Note

[SENSe] (continued)

:CORRection

:COLLect

[:ACQuire] STANdard2

:METHod REFL1

:DATA? STANdard2

[:STATe]

Boolean

:FIMPedance

:APERture

numeric value>[MSjS]

:CONTact

:VERify

Boolean

:RANGe

:AUTO

[:UPPer]

:FUNCtion

Boolean

numeric value>[MOHMjOHMjKOHM]

sensor function

SOURce

:CURRent

[:LEVel]

[:IMMediate]

[:AMPLitude]<numeric value>[UAjMA]

:AUTO<Boolean

STATus

:OPERation

:CONDition? query only

:ENABle

numeric value

[:EVENt]? query only

:PRESet no query

:QUEStionable

:CONDition? query only

:ENABle

numeric value

[:EVENt]? query only

SYSTem

:BEEPer

[:IMMediate] no query

:STATe

Boolean

:ERRor? query only

:KLOCk

:LFRequency

Boolean

numeric value

:PRESet

:VERSion? query only

TRIGger

[:SEQuence1]

:DELay

numeric value>[MSjS]

[:IMMediate] no query

:SOURce

BUSjEXTernaljINTernaljMANual

:SEQuence2

:DELay

numeric value>[MSjS]

HP-IB Reference 5-3

Subsystem Command Tree HP 4338B

Subsystem Command Tree

Top of the subsystem command tree is called the

the low-level commands, you must specify a particular

specify a DOS le directory path. After Power ON or after

root command

path

just like you would for example

*RST

, or simply the

root

.To reach

, the current path is set to the

root. The path settings are changed as follows:

Message Terminator

A message terminator, such as

character, sets the current

path to the root.

Colon (:)

When a colon is placed between two command mnemonics, the colon

moves the current path down one level on the command tree. When

the colon is the rst character of a command, it species the following

command mnemonic is a root-level command.

Semicolon (;)

A semicolon separates two commands in the same message without

changing the current path.

Common commands, such as

*RST

, are not part of any subsystem. The HP 4338B interprets

them in the same way, regardless of the current path setting.

Figure 5-1 shows examples of how to use the colon and semicolon to navigate eciently

through the command tree.

Figure 5-1. Proper Use of the Colon and Semicolon

In Figure 5-1, notice how proper use of the semicolon can save typing. Sending this message:

:AA:BB:EE; FF; GG

Is the same as sending these three messages:

:AA:BB:EE

:AA:BB:FF

:AA:BB:GG

5-4 HP-IB Reference

HP 4338B Program Message Syntax

Program Message Syntax

This section provides an example of constructing a SCPI program message. A program message

is the message sent from a computer to an instrument. Program messages consist of commands

combined with appropriate punctuation and program message terminators.

Case

Letter case (upper and lower) is ignored.

Program Message Terminator

A program message must end with one of the three

,or

interface at the same time the preceding data byte is sent. For example,HPBASIC

program message terminators

means that EOI is asserted on the HP-IB

OUTPUT

statement automatically sends a message terminator after the last data byte is sent. If you are

using a PC, you can usually congure your system to send whatever terminator you specify.

Subsystem Command Syntax

Subsystem command consists of the level mnemonics which are separated with colons

example, command form of

APERture

under [

SENSe]:FIMPedance

subsystem becomes as

.For

follows:

:FIMPedance:APERture

Abbreviated mnemonics are also available for command headers. In the above example,

:FIMP:APER

is available.

Common Command Syntax

Common commands do not have a hierarchical structure

. They are just sent as follows:

*CLS

Parameters

There must be a

<space>

between the last command mnemonic and the rst parameter in a

subsystem command.

:FIMP:APERtparameter

means a space (ASCII character (decimal 32)) is inserted here

If you send more than one parameter with a single command, each parameter must be

separated by a comma. For example,

:POINts

command of

DATA

subsystem is followed by two

parameters as follows:

:DATA:POINtparameter,parameter

Parameter Types

SCPI denes dierent data formats for use in program messages and query responses. The

HP 4338B accepts commands and parameters in various formats and responses a particular

query in a predened and rigid format. Each command reference contains information about

available parameter types for the individual commands.

numeric value>is used in both common commands and subsystem commands

numeric value>represents numeric parameter as follows:

HP-IB Reference 5-5

Program Message Syntax HP 4338B

100

100.

1.23,+235

4.56et3

7.89E001

no decimal point required

fractional digits optional

leading signs allowed

space allowed after e in exponential

use either E or e in exponential

digits left of decimal point optional

The HP 4338B setting programmed with a numeric parameter can assume a nite number

of values, so the HP 4338B automatically rounds o the parameter.For example, the

HP 4338B has programmable line frequencies of 50 or 60 Hz. If you specied

50.1

, it would

be rounded o to50.

The subsystem commands can use extended numeric parameters. Extended numeric

parameters accept all numeric parameter values and other special values, for instance,

MAXimum,MINimumorUP,DOWN

. The special values available for a command are described in

the each command's reference description.

Query response to<numeric value>is always a numeric value.

Boolean>represents a single binary condition that is either ON or OFF.<Boolean>allows

the following parameters:

ON,OFF

1,0

sensor function>and<data handle>are string parameters which contain ASCII

In a program message

In a program message and query response

characters. A string must begin with a single quote(ASCII 39 decimal) or a double quote

(ASCII 34 decimal) and end with the same character

. The quote to mark the beginning and

end of the string is called the delimiter.You can include the delimiter as part of the string by

typing it twice without any characters in between.

Example of<sensor function>"FIMPedance"

10 OUTPUT @Meter;":FUNC 'FIMP'"

20 OUTPUT @Meter;":FUNC ""FIMP"""

Query response is the string between the double quote delimiters

using single quote

using double quote

Sux

When a command has a specied sux, the sux multiplier and sux units (The sux

multiplier must be used with the sux unit.) can be used with parameters as follows:

Table 5-1. Sux Multiplier

Denition Mnemonic Available Sux

-3

-6

(Kilo) K A

(Milli) M

OHM

(Micro) U

For example,

10 OUTPUT @Meter;":TRIG:DEL 30MS" 30MS

is a parameter which means 30 ms

The sux is optional and can be omitted. The suxes available for the commands are

described in the reference for each command.

5-6 HP-IB Reference

Agilent 4338B Operations Guide

Specifications and Main Features

Frequently Asked Questions

User Manual

Contents