YOKOGAWA 7556 User Manual

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Digital Resistance Meter

IM 755601-01E

4th Edition

Product Registration

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YOKOGAWA provides registered users with a variety of information and services.

Please allow us to serve you best by completing the product registration form

accessible from our website.

http://tmi.yokogawa.com/

PIM 103-04E

Notes

Trademarks

Revisions

Thank you for purchasing the YOKOGAWA Digital Resistance Meter 755601/755611. This User’s Manual contains useful information about the functions, operating procedures, and handling precautions of the instrument. To ensure correct use, please read this manual thoroughly before operation. Keep this manual in a safe place for quick reference in the event a question arises.

• The contents of this manual are subject to change without prior notice as a result of continuing improvements to the instrument’s performance and functions. The figures given in this manual may differ from the actual screen.

• Every effort has been made in the preparation of this manual to ensure the accuracy of its contents. However, should you have any questions or find any errors, please contact your nearest YOKOGAWA dealer.

• Copying or reproducing all or any part of the contents of this manual without YOKOGAWA’s permission is strictly prohibited.

• MS-DOS is a registered trademark of Microsoft Corporation.

• PostScript is a registered trademark of Adobe Systems Incorporated.

• Other company and product names are trademarks or registered trademarks of their respective holders.

1st edition: July 1999 2nd edition: September 2013 3rd edition: May 2014 4th edition: October 2017

iIM 755601-01E

Checking the Contents of the Package

Unpack the box and check the contents before operating the instrument. If some of the contents are not correct or missing or if there is physical damage, contact the dealer from which you purchased them.

7556 Main Unit

Check that the model name and suffix code given on the name plate on the side panel match those on the order. When contacting the dealer from which you purchased the instrument, please quote the instrument No.

MODEL

SUFFIX

NO.

Madein Japan

MODEL and SUFFIX codes

Model Name Suffix Code Specifications

755601 0.01% resolution 755611 0.001% resolution

Power supply -1 100 VAC

-4 120 VAC

-6 220 VAC

-8 240 VAC

Power cord

Options /C1 GP-IB interface

1 Make sure that the attached power cord meets the designated standards of the country and

-D UL/CSA Standards Power Cord (Part No.: A1006WD)

-F VDE Standard Power Cord (Part No.: A1009WD)

-Q BS Standard Power Cord (Part No.: A1054WD)

-R SAA Standard Power Cord (Part No.: A1024WD)

-H GB Standard Power Cord (complies with the CCC)

/C2 Centronics interface /C3 GP-IB & Centronics interface

area that you are using it in.

[Maximum Rated Voltage: 125 V, Maximum Rated Current: 7 A]

[Maximum Rated Voltage: 250 V, Maximum Rated Current: 10 A]

[Maximum Rated Voltage: 240 V, Maximum Rated Current: 10 A]

(Part No.: A1064WD) [Maximum Rated Voltage: 250 V, Maximum Rated Current: 10 A]

MODEL

SUFFIX

NO.

Made in Japan

NO. (Instrument No.)

When contacting the dealer from which you purchased the instrument, please quote the instrument No.

ii IM 755601-01E

Standard Accessories

The following standard accessories are supplied with the instrument. Check that all items are present and that they are undamaged.

Checking the Contents of the Package

1. Power cord (one of the following power cords

is supplied according to the instrument's suffix codes)

UL/CSA standard A1006WD

Spare power fuse for suffix code -1 & -4: A1345EF (1 piece) for suffix code -6 & -8: A1342EF (1 piece)

1 Make sure that the attached power cord meets the designated standards of the

country and area that you are using it in.

VDE standard A1009WD

F Q R

Rubber feet (4 pieces) A9088ZM 2 sets

BS standard A1054WD

SAA standard A1024WD

User's Manual (this manual) 1 piece

GB Standard A1064WD

Note

• We recommend you keep the packing box. The box is useful when you need to transport the

instrument.

• For information regarding the fuse ratings, see section 11.5, “Replacing the Power Fuse.”

iiiIM 755601-01E

Safety Precautions

This product is designed to be used by a person with specialized knowledge. This instrument is designed for indoor use only. The following general safety precautions must be observed during all phases of operation. If the instrument is used in a manner not specified in this manual, the protection provided by the instrument may be impaired. This manual is an essential part of the product; keep it in a safe place for future reference. YOKOGAWA assumes no liability for the customer’s failure to comply with these requirements.

The following symbols are used on this instrument.

“Handle with care.” To avoid injury, death of personnel or damage to the instrument, the operator must refer to the explanation in the User’s Manual or Service Manual.

ON (power)

OFF (power)

Make sure to comply with the following safety precautions. Not complying might result in injury, death of personnel.

WARNING

Use the Instrument Only for Its Intended Purpose

This instrument is a resistance measuring device. Do not use this instrument for anything other than as a resistance measuring device.

Check the Physical Appearance

Do not use the instrument if there is a problem with its physical appearance.

Power Supply

Ensure that the source voltage matches the voltage of the power supply before turning ON the power.

Power Cord and Plug

• To prevent an electric shock or fire, be sure to use the power cord supplied by YOKOGAWA. The main power plug must be plugged into an outlet with a protective grounding terminal. Do not invalidate protection by using an extension cord without protective grounding. Additionally, do not use the power cord supplied with this instrument with another instrument.

• Do not use the power cord in a bundled condition.

• If you use a power plug with foreign substance on it, insulation may be compromised by humidity or other factors and may cause a fire. Clean the power plug regularly.

Protective Grounding

Make sure to connect the protective grounding to prevent electric shock before turning ON the power.

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Safety Precautions

Necessity of Protective Grounding

Never cut off the internal or external protective grounding wire or disconnect the wiring of the protective grounding terminal. Doing so poses a potential shock hazard.

Do Not Use When the Protection Functions Are Defective

Before using this instrument, check that the protection functions, such as the protective grounding and fuse, are working properly. If you suspect a defect, do not use the instrument.

Do Not Remove the Covers or Disassemble or Alter the Instrument

Only qualified YOKOGAWA personnel may remove the covers and disassemble or alter the instrument. The inside of the instrument is dangerous because parts of it have high voltages.

External Connection

Connect the protective grounding before connecting to the item under measurement or external control circuit. If you need to touch the circuit, turn of its power and make sure that there are no voltages being generated.

Measurement Category

The measurement category of this instrument signal input terminals is Other (O). Do not use it to measure the main power supply or for Measurement Categories II, III, and IV.

Install or Use the Instrument in Appropriate Locations

• This instrument is designed to be used indoors. Do not install or use it outdoors.

• Install the instrument so that you can immediately remove the power cord if an abnormal or dangerous condition occurs.

CAUTION

Operating Environment Limitations

This product is a Class A (for industrial environments) product. Operation of this product in a residential area may cause radio interference in which case the user will be required to correct the interference.

vIM 755601-01E

Waste Electrical and Electronic Equipment

Waste Electrical and Electronic Equipment (WEEE), Directive

(This directive is valid only in the EU.) This product complies with the WEEE directive marking requirement. This marking indicates that you must not discard this electrical/electronic product in domestic household waste.

Product Category With reference to the equipment types in the WEEE directive, this product is classified as a “Monitoring and control instruments” product.

When disposing of products in the EU, contact your local Yokogawa Europe B.V. office. Do not dispose in domestic household waste.

EU Battery Directive

(This directive is valid only in the EU.) Batteries are included in this product. This marking indicates they shall be sorted out and collected as ordained in the EU battery directive.

Battery type: Lithium battery

You cannot replace batteries by yourself. When you need to replace batteries, contact your local Yokogawa Europe B.V. office.

vi IM 755601-01E

How to Use this Manual

Structure of the Manual

This User’s Manual consists of the following 12 chapters, and an index.

Chapter Title Description

1 Functions Describes the measurement principles and

2 Names and Uses of Parts Describes the names and uses of each part of the

3 Before Starting Measurements Describes precautions on use, how to install the

4 Setting the Measurement Conditions Describes how to set the measurement conditions

5 Making Measurements Describes how to make measurements.

6 Other Functions Describes how to save and recall measured data

7 Using the Handler Interface Describes the handler interface specifications, how

8 Using the Serial (RS-232) Interface Describes how to control this instrument from a

9 Using the GP-IB Interface Describes how to control this instrument from a

10 Using Communication Commands Describes communication commands and sample

11 Error Messages and Maintenance, Describes the possible causes of problems and

and Inspection their appropriate corrective measures. Describes

12 Specifications The specifications of the instrument are given on

Index Gives an Index.

functions of the instrument. Operating procedures are not given in this chapter. However, reading this chapter will help you understand the operating procedures given in the chapters that follow.

instrument. For keys, references are given to pages in the manual where operating procedures are explained.

instrument, how to connect the power supply, turn ON/OFF the power switch, and other operations.

such as measurement range and limits.

and how to print out the data.

to setup the handler interface, and the timing chart.

controller (such as a PC) and how to retrieve measured data from the instrument via the serial (RS-232) interface.

controller (such as a PC) and how to retrieve measured data from the instrument via the GP-IB interface.

programs.

the messages that are displayed on the screen. Describes how to perform self-tests.

tables.

viiIM 755601-01E

How to Use this Manual

Conventions Used in this Manual

Symbols

The following symbols are used in this manual.

Affixed to the instrument. Indicates danger to personnel or instrument and the operator must refer to the User’s Manual. The symbol is used in the User’s Manual to indicate the reference.

WARNING

CAUTION

Note

Characters displayed on the seven-segment LED

Because this instrument uses a seven-segment LED to display alphanumeric characters, some of the characters are displayed using special characters. For details, see section

1.3, “Digital Numbers and Characters and A List of Menus” (page 1-4).

Symbols used on pages in which operating procedures are given

In chapters 3 through 9, on pages where operating procedures are given, the following symbols are used to classify a description.

Keys

Procedure

Describes precautions that should be observed to prevent injury or death to the user.

Describes precautions that should be observed to prevent minor or moderate injury, or damage to the instrument.

Provides important information for the proper operation of the instrument.

Indicates the keys and indicators related to the setting.

Describes the procedures using a flow diagram. For details on how to read the flow diagram, see the example given on the next page. The procedures are based on the premise that the user is carrying them out for the first time. Therefore, in some cases, you may not have to follow all the steps.

Explanation

viii IM 755601-01E

Describes the details of the settings and the restrictions that exist with the operating procedure. A detailed description of the function is not provided in this section. See chapter 1 for a detailed description of the functions.

How to Use this Manual

A Procedure Example

1. Pressing the SHIFT key then the MΩ key displays the contact check selection

menu.

2. Press the

REF

LIMIT

key until the desired item appears on the screen.

3. Press the ENTER key to confirm the selection.

4. If you selected bEF or AFt, enter the contact check level using the numerical keys.

Then, press the ENTER key to confirm.

SHIFT

Ω

CHECK

REF LIMIT

Ω

ENTER

Ω

ENTER

(Contact check level)

Ω

ENTER

Symbols Used in the Syntax

The following table indicates symbols that are used in the syntax mainly in Chapter 10. These symbols are referred to as BNF (Backus-Naur Form) symbols. For details, see pages 10-5 and 10-6.

Symbol Meaning Example User Input Example

<> Defined value :PANel:RECall{<NRf>}<NRf>=0 to 9 →:PANEL:RECALL 3 {} Select a value from {} :MTIMe{NORMal|FAST|HSPeed} →:MTIME FAST | Exclusive OR [] Can be omitted :CHECK[:MODE]BEFore →:CHECK:BEFORE

ixIM 755601-01E

Checking the Contents of the Package .........................................................................................ii

Safety Precautions .......................................................................................................................iv

Waste Electrical and Electronic Equipment ................................................................................. vi

EU Battery Directive .....................................................................................................................vi

How to Use this Manual .............................................................................................................. vii

Chapter 1 Functions

1.1 Block Diagram ........................................................................................................................... 1-1

1.2 Functions .................................................................................................................................. 1-2

1.3 Digital Numbers and Characters and A List of Menus .............................................................. 1-4

1.4 A List of Initial Values ................................................................................................................ 1-7

Chapter 2 Names and Uses of Parts

2.1 Names of Parts ......................................................................................................................... 2-1

2.2 Keys and Error Displays ........................................................................................................... 2-2

Chapter 3 Before Starting Measurements

3.1 Precautions on the Use of the instrument ................................................................................. 3-1

3.2 Installing the Instrument ............................................................................................................ 3-2

3.3 Connecting the Power Cord ...................................................................................................... 3-3

3.4 Wiring ........................................................................................................................................ 3-5

Chapter 4 Setting the Measurement Conditions

4.1 Switching the Limit Mode .......................................................................................................... 4-1

4.2 Changing the Range (Reference) ............................................................................................. 4-2

4.3 Using the Comparator Function ................................................................................................ 4-4

4.4 Using the Contact Check Function ........................................................................................... 4-7

4.5 Setting the Measurement Time ................................................................................................. 4-8

4.6 Using the Trigger Function ........................................................................................................ 4-9

Chapter 5 Making Measurements

5.1 Setting the Measurement Mode ................................................................................................ 5-1

5.2 Switching between Deviation (%) and Absolute (R) Displays ................................................... 5-3

Chapter 6 Other Functions

6.1 Store/Recall Measured Data ..................................................................................................... 6-1

6.2 Printing Data ............................................................................................................................. 6-3

6.3 Initializing the Setup Information ............................................................................................... 6-7

Chapter 7 Using the Handler Interface

7.1 Handler Interface Functions and Specifications ........................................................................ 7-1

7.2 Setting the Pulse Width of the EOM Signal .............................................................................. 7-4

7.3 Timing Chart.............................................................................................................................. 7-5

x IM 755601-01E

Contents

Chapter 8 Using the Serial (RS-232) Interface

8.1 Serial (RS-232) Interface Functions and Specifications ........................................................... 8-1

8.2 Connecting the Serial (RS-232) Interface Cable ....................................................................... 8-2

8.3 Handshaking ............................................................................................................................. 8-4

8.4 Data Format .............................................................................................................................. 8-6

8.5 Serial Communication Settings ................................................................................................. 8-7

Chapter 9 Using the GP-IB Interface

9.1 GP-IB Interface Functions and Specifications .......................................................................... 9-1

9.2 Connecting the Interface Cable ................................................................................................ 9-3

9.3 Responses to Interface Messages ............................................................................................ 9-4

9.4 Switching to the Addressable Mode .......................................................................................... 9-6

9.5 Switching to the Talk-only Mode................................................................................................ 9-8

Chapter 10 Communication Commands

10.1 Before Programming ............................................................................................................... 10-1

10.1.1 Messages...................................................................................................................................... 10-1

10.1.2 Commands.................................................................................................................................... 10-3

10.1.3 Responses .................................................................................................................................... 10-4

10.1.4 Data .............................................................................................................................................. 10-5

10.1.5 Synchronization with the Controller .............................................................................................. 10-7

10.1.6 Programming of Various Functions ............................................................................................... 10-9

10.2 Commands ............................................................................................................................ 10-13

10.2.1 A List of Commands .................................................................................................................... 10-13

10.2.2 CHECk(contact CHECk) Group .................................................................................................. 10-15

10.2.3 COMMunicate Group .................................................................................................................. 10-16

10.2.5 HANDler Group ........................................................................................................................... 10-18

10.2.4 DISPlay Group ............................................................................................................................ 10-18

10.2.6 HEADer Group ............................................................................................................................ 10-19

10.2.7 LIMit Group ................................................................................................................................. 10-20

10.2.8 MEASure Group.......................................................................................................................... 10-22

10.2.9 MTIMe(Meas TIMe) Group.......................................................................................................... 10-23

10.2.10 PANel Group ............................................................................................................................... 10-23

10.2.11 PRINt Group (Option) ................................................................................................................. 10-24

10.2.12 READ Group ............................................................................................................................... 10-25

10.2.13 RECall Group .............................................................................................................................. 10-26

10.2.14 SELFtest Group .......................................................................................................................... 10-28

10.2.15 STATus Group ............................................................................................................................. 10-29

10.2.16 STORe Group ............................................................................................................................. 10-30

10.2.17 TRIGger Group ........................................................................................................................... 10-32

10.2.18 Common Command Group ......................................................................................................... 10-33

10.3 Status Report ........................................................................................................................ 10-36

10.3.1 About the Status Report.............................................................................................................. 10-36

10.3.2 Status Byte.................................................................................................................................. 10-37

10.3.3 Standard event register............................................................................................................... 10-38

10.3.4 Extended Event Register ............................................................................................................ 10-39

10.3.5 Output Queue and Error Queue.................................................................................................. 10-40

10.4 ASCII Character Codes ........................................................................................................ 10-41

10.5 About the IEEE.488.2-1992 Standard ................................................................................... 10-42

Index

xiIM 755601-01E

Contents

Chapter 11 Error Messages, Maintenance, and Inspection

11.1 Troubleshooting ...................................................................................................................... 11-1

11.2 Messages and Corrective Actions........................................................................................... 11-2

11.3 Self Test .................................................................................................................................. 11-5

11.4 Adjustments ............................................................................................................................ 11-7

11.5 Replacing the Power Fuse ....................................................................................................11-12

Chapter 12 Specifications

12.1 Input Specifications ................................................................................................................. 12-1

12.2 Trigger Specifications.............................................................................................................. 12-3

12.3 Measurement Time Specifications .......................................................................................... 12-3

12.4 Contact Check Specifications ................................................................................................. 12-4

12.5 Comparator Specifications ...................................................................................................... 12-4

12.6 Other Specifications ................................................................................................................ 12-5

12.7 Handler Interface Specifications ............................................................................................. 12-5

12.8 Communication Specifications ................................................................................................ 12-6

12.9 General Specifications ............................................................................................................ 12-6

12.10 External Dimensions ............................................................................................................... 12-8

Index

xii IM 755601-01E

Chapter 1 Functions

LOCAL key GP-IB connector

1.1 Block Diagram

Block Diagram

CUR

POT

CUR

Constant current source for measurement

Diff. amp.

Constant current source for contact check

Analog section Digital section

A/D converter

Pre-amp

D/A converter

Comparator

A/D interface

CPU

Functions

Display interface

Printer interface

Handler interface

Communication interface

Memory

Measurement Principle

A constant current is fed through the resistor under measurement from the H to the L measured. Because the electric potential at the H equal to the circuit’s common electric potential, the resistance can be determined by dividing the voltage at the L In the contact check that is performed before or after the measurement, a constant current is fed from the H the L reference voltage that was set by the D/A converter to check the connection to the resistor under measurement. Since the analog section is insulated from the digital section (electric potential of the case), the circuit is robust against noise, resulting in a stable measurement. In addition, the handler interface is also insulated from the case in order to minimize noise influence.

CUR

terminal, and the voltage difference between the H

CUR

terminal is controlled so that it is

POT

terminal by the current.

POT

terminal to the H

CUR

terminal. The voltage that appears across these terminals is compared with the

CUR

terminal and from the L

POT

and L

terminals is

POT

terminal to

POT

terminal

1-1IM 755601-01E

1.2 Functions

Comparator Function

Determines whether or not the measured result is within the comparison range set arbitrarily by the user. HI, IN, or LO mark is turned ON to indicate the comparator result. The result is also output via the handler interface.

Contact Check Function

Determines whether or not the item under measurement is properly connected to the measurement input terminal, and the result is output via the handler interface. If an error is detected, “ (no contact)” is displayed.

Trigger Function

Trigger Mode

The instrument has the following three types of trigger modes:

• External trigger: Makes a measurement when the instrument detects a rising or

• Manual trigger: Makes a measurement when the TRIG key on the front panel is

• Internal trigger: Makes measurements at intervals which depend on the specified

falling edge of a signal that is applied to the external trigger input terminal or the number 8 pin (EXT TRIG) of the handler interface.

pressed or whenever a trigger is activated via the communication interface.

measurement time (auto sampling).

Trigger Delay

The measurement can then be started the specified time after the trigger occurrence. A trigger delay is enabled when the trigger mode is set to external trigger or manual trigger.

Communication Function

Handler and serial (RS-232) interfaces come standard with the instrument. A GP-IB interface is also available as an option.

Printout Function

By using the optional Centronics interface, data stored in the memory, statistics collected from those data, and other information can be printed to an external printer.

1-2 IM 755601-01E

1.2 Functions

Handler Interface Function

The handler interface is used to output comparator results, contact check results, index signals, and various other signals. For the specifications of each pin, see section 12.7 “Handler Interface Specifications.”

Other Functions

Storing/Recalling Measured Data

Up to 2000 data sets can be stored. Each data set contains the measured value obtained from each measurement. A data set is stored or recalled at every trigger occurrence.

Initializing settings

The settings can be reset to factory default values or initial values.

Measurement Mode/SETUP mode

The instrument has two modes, measurement and SETUP modes. You can switch between the modes as necessary. Measurement mode: This mode measures and displays the resistance. Only the R/%

SETUP mode: This mode is used to change the instrument’s settings. No

Functions

key, SETUP/MEAS key (SHIFT+R/% key), and STORE DATA key (SHIFT+0 key) are enabled. Since all other keys are locked, an erroneous operation resulting from pressing the wrong keys can be avoided. However, the TRIG key is enabled when the trigger mode is set to [MANUAL] and the RECALL DATA key is enabled when recalling data.

measurements can be made in this mode.

Limit Mode (Deviation/Absolute)

You can select whether to use a deviation (%) or an absolute value (R) to specify the limit value (LO, HI) that is used when determining the result with the comparator function. The comparator determines the result using deviation (%) if you set the limit mode to deviation. The measured value can then be displayed using % or Ω. The comparator determines the result using absolute value (R) if you set the limit mode to absolute mode (R). The measured value is displayed using Ω. In this mode, the comparator function works only for the 1 Ω range.

1-3IM 755601-01E

1.3 Digital Numbers and Characters and A List of Menus

Digital Numbers and Characters

Because the instrument’s display is a seven-segment LED, the following special characters are used to represent the alphanumeric characters. Some characters are not used by the instrument.

A List of Menus

0 1 2 3 4 5 6 7 8 9

A B C D E F G H I J

Lower case c

Lower case h

K L M N O P Q R S T

U V W X Y Z + –

× ÷

∧ (power)

In this section, a list of menus for the SETUP mode is given for each operation key. For information regarding the EXIT and < , > keys, see section 2.2, “Keys and Error Displays.”

Top menu of the SETUP mode

The first menu displayed in the main display in the SETUP mode is called the top menu. The display returns to this menu when you confirm a setting or when you exit from a menu. The top menu varies depending on the limit mode setting as follows: When the limit mode is set to % (PCnt) : When the limit mode is set to R (OHm) :

Limit mode setting menu (page 4-1)

SHIFT

LIMIT

MODE

(Deviation mode)

(Absolute mode)

Reference setting menu (page 4-2)

REF

(Set the reference)

Contact check setting menu (page 4-7)

SHIFT

Ω

CHECK

(Execute before measurement)

(Execute after measurement)

(Disable contact check)

Measurement time selection menu (page 4-8)

SHIFT

MEAS

TIME

(Normal)

(Fast)

(High speed)

Trigger mode setting menu (page 4-9)

SHIFT

TRIG

MODE

(External trigger)

(Manual trigger)

(Internal trigger)

1-4 IM 755601-01E

1.3 Digital Numbers and Characters and A List of Menus

Measured data store menu (page 6-1)

STORE

SHIFT

DATA

(Number of stored data sets)

Measured data recall menu (page 6-1)

RECALL

SHIFT

DATA

Communication interface setting menu (page 8-7 and 9-6)

SHIFT

I/F

Functions

* Displayed only on instruments that have the optional GP-IB interface.

1-5IM 755601-01E

1.3 Digital Numbers and Characters and A List of Menus

Misc menu (pages 4-5, 4-10, 4-11, 6-3, 6-4, 6-7, 7-4, and 11-6)

SHIFT

MISC

Ω

(Printer output)

(Output format)

(Start printing)

(Stop printing)

(40 characters, no measured data)

(40 characters, with measured data)

(A4 size, no measured data)

(A4 size, with measured data)

(Percent limit)

(Trigger delay)

(Trigger edge)

(EOM pulse width)

(Initialize setup information)

(Self-test)

(Delay time in units of ms)

(Rising)

(Falling)

(in units of ms)

*1 Displayed on instruments that have the optional Centronics interface. *2 Not displayed when the limit mode is set to absolute mode (R). *3 For the 755611. “9.99” or “99.9” is displayed on the 755601.

1-6 IM 755601-01E

1.4 A List of Initial Values

Parameter Factory Default Initial Settings Resume Function*

Display Deviation Deviation Yes Deviation reference (REF) 100 kΩ 100 kΩ Yes Measurement time NORMAL NORMAL Yes Trigger mode EXTERNAL EXTERNAL Yes Trigger delay 0 ms 0 ms Yes Contact check function ON ON Yes Contact check timing Before Before Yes Contact check level 30 Ω 30 Ω Yes HI limit 0% 0% Yes LO limit 0% 0% Yes Measured data store OFF OFF No Number of stored data 100 100 Yes Contents of the stored data Cleared Cleared No Measured data recall OFF OFF No SETUP/MEAS SETUP SETUP Yes Limit mode PCNT PCNT Yes Percent limit 9.99 9.99 Yes EOM width 10 ms 10 ms Yes Communication interface Serial (RS232) Previous condition Yes Serial (RS232)

Mode Normal Previous condition Yes Handshaking 0 Previous condition Yes Data format 0 Previous condition Yes Baud rate 3 Previous condition Yes Terminator 0 Previous condition Yes Header 0 Previous condition Yes

GP-IB

Mode Addressable Previous condition Yes Address 1 Previous condition Yes

Header 0 Previous condition Yes Printer (option) OFF OFF No Print out of measured data OFF.rP OFF.rP Yes

Yes: enabled, No: disabled * Resume function: A function in which the setup information is stored when the power is turned

OFF and recalled when it is turned ON again.

Functions

1-7IM 755601-01E

LOCAL key GP-IB connector

Chapter 2 Names and Uses of Parts

2.1 Names of Parts

Front Panel

Setting value/setting display (Main display, 5 digits on the 755601)

Reference display

DIGITAL RESISTANCE METER

HIGH

STORE

NORMAL

FAST

REFERENCE

UNKNOWN

SPEED

MEAS& LOCK

SAMPLE

EXTERNAL

MANUAL

CUR L POT H POT H CUR

RECALL

DATA

MΩ

kΩ

Ω

Measurement input terminal (page 3-5)

755601 Display Screen

HIGH

MEAS& LOCK

SAMPLE

EXTERNAL

MANUAL

NORMAL

FAST

REFERENCE

SPEED

STORE DATA

MΩ

kΩ

CHECK REMOTE

HI LIMIT

LO LIMIT

Do not connect a current/voltage source to the UNKNOWN terminals. It will damage the instrument.

ALL TERMINALS 42 V PEAK TO

RECALL

CHECK REMOTE

DATA

Ω

HI LIMIT display (4 digits on the 755601)

LO LIMIT display (4 digits on the 755601)

SETUP/MEAS

REF LIMIT

R/%

SHIFT

HI LIMIT

LO LIMIT

EXIT

MEAS

LIMIT

TIME

Ω

MODE

546

STORE

RECALL

DATA

Ω

LOCAL

TRIG

MODE

CHECK

MISCI/F

Ω,%

ENTER

Ω

Names and Uses of Parts

Numerical key/ setting key (page 2-2)

Rear Panel (for both 755601, 755611)

Handler interface connector (page 7-3)

HANDLER

TRIGGER IN

External trigger input terminal (page 4-11)

Serial (RS-232) interface connector (chapter 8)

Power switch (page 3-4)

Power connector (page 3-3)

SERIAL

PRINTER

(RS-232)

POWER

OFF

100V AC 25VA MAX

50/60Hz

GP-IB(IEEE488)

FUSE

250V T 315mA

GP-IB interface connector (chapter 9)

Centronics interface connector (page 6-4)

Fuse (page 11-12)

2-1IM 755601-01E

2.2 Keys and Error Displays

Display

The selected measurement time lights

Lights while storing measured data

Lights while recalling measured data

Indicates the comparator result

Lights during contact check

Lights while operating under remote control

HIGH

STORE

RECALL

NORMAL

FAST

SPEED

MEAS& LOCK

SAMPLE

EXTERNAL

MANUAL

REFERENCE

DATA

MΩ

kΩ

Ω

Lights when the trigger mode is set to MANUAL

Lights when the trigger mode is set to EXTERNAL

Lights every data sample

Lights during measurement mode

Switching between measurement mode and SETUP mode

SETUP/MEAS (SHIFT+R/%) key

This key is used to switch between measurement mode and SETUP mode. The instrument is in the measurement mode when the “MEAS & LOCK” indicator is lit.

DATA

CHECK REMOTE

HI LIMIT

LO LIMIT

SETUP/MEAS

SHIFT

MEAS

TIME

Ω

STORE

DATA

REF LIMIT

R/%

EXIT

LOCAL

TRIG

MODE

CHECK

MISCI/F

Ω

ENTER

Ω

LIMIT

MODE

546

RECALL

DATA

Keys used during the measurement mode

R/% key

This key is used to switch the unit between absolute (R) and deviation (%) in which the measured value is displayed. When the limit mode is set to absolute (R), pressing this key will have no effect.

2-2 IM 755601-01E

Keys used during the SETUP mode

SHIFT key

Pressing this key once causes the keys to enter the shifted condition. Pressing it again clears the shifted condition. During the shifted condition, the functions indicated in purple characters are effective. The shifted condition is indicated by a lit indicator to the left of the SHIFT key.

EXIT(R/%) key

Used to cancel the setting operation. Pressing this key cancels the specified settings and causes the instrument to return to the top menu of the SETUP mode.

REF key

When the limit mode is set to deviation (%), this key is used to set the range (reference).

LIMIT key

Used to set the upper and lower limits.

<(REF) key

• When entering numbers (using the numerical keys), this key operates as a backspace

key.

• This key is also used when selecting a parameter in the SETUP menu.

>(LIMIT) key

• When entering numbers, this key operates as a clear key.

• It is also used when selecting a parameter in the SETUP menu.

Numerical keys

• Used when entering numerical values. These keys are valid only when entering

numbers.

• The MΩ, kΩ, Ω, and % keys are used to set a unit on the numerical value.

TRIG key

When the trigger mode is set to manual trigger, pressing this key activates a trigger.

MEAS TIME(SHIFT+7) key

Used to select the measurement time.

LIMIT MODE(SHIFT+8) key

Used to select the limit mode between deviation (%) and absolute (R).

CHECK(SHIFT+MW) key

Used to set the contact check function.

I/F(SHIFT+3) key

Used to set the serial (RS-232) interface or the optional GP-IB interface.

MISC(SHIFT+kW) key

Used to set the trigger delay and other parameters.

STORE DATA(SHIFT+0) key

Used when storing the measured data.

RECALL DATA(SHIFT+ .) key

Used when recalling the measured data.

LOCAL key

Clears the remote mode.

ENTER(Ω,%) key

Used to confirm a specified value or parameter.

2.2 Keys and Error Displays

Names and Uses of Parts

2-3IM 755601-01E

2.2 Keys and Error Displays

Error Display

Overrange display

When the measured value exceeds the display range or the maximum display value for the corresponding measurement range, an overrange results. The display shows the following when the measured value is over the range. “ ”

Display when an abnormality is detected in the test current

The display when an abnormality is detected in the test current shows the following: “ ”

Contact check error display

When using the contact check function to make measurements, the display shows the following when a contact check error occurs. “

Other error displays

When an error that is described in section 11.2 “Messages and Corrective Actions” occurs, the corresponding error code is displayed as follows: “

”

” or “ ”

Bar Display

When the mode is switched from the SETUP mode to the measurement mode, the display shows the following until the first measured value is displayed. “

”

2-4 IM 755601-01E

Chapter 3 Before Starting Measurements

3.1 Precautions on the Use of the instrument

Safety Precautions

If you are using this instrument for the first time, make sure to thoroughly read the “Safety Precautions” given on page iii.

• Do not remove the cover from the instrument. Some sections inside the instrument

have high voltages that are extremely dangerous. For internal inspection or adjustment, contact your nearest YOKOGAWA dealer as listed on the back cover of this manual.

• Never continue to use the instrument if there are any symptoms of trouble such as

strange smells or smoke coming from the instrument. In such cases, immediately turn OFF the power and unplug the power cord. Then, contact your nearest YOKOGAWA dealer as listed on the back cover of this manual.

• Nothing should be placed on top of the power cord. The power cord should also be

kept away from any heat sources. When unplugging the power cord from the outlet, never pull the cord itself. Always hold the plug and pull it. If the power cord is damaged, contact your dealer for replacement. Refer to page ii for the part number when placing an order.

General Handling Precautions

• Never place any objects containing water on top of the instrument. This may cause problems.

• Do not apply shock to the input section. Applying shock to the input terminal or the

probe can cause electrical noise to enter the instrument.

• When the instrument is not being used for an extended period of time, unplug the

power cord from the outlet.

• When moving the instrument, first, turn OFF the devices under measurement and

remove all measurement wires and communication cables. Then, turn OFF the instrument and remove the power cord from the outlet. To carry the instrument, use the handle (see figure below) or carry it using both hands.

Before Starting Measurements

• Keep electrically charged objects away from the input terminals. They may damage

the internal circuitry.

• Do not pour volatile agents on the case nor leave the case in contact with rubber or

PVC products for long periods of time. The case is made of a thermoplastic resin, so take care not to let anything hot such as a soldering iron touch the case.

• When cleaning the case or the operation panel, remove the instrument’s power cord

from the outlet. Then, wipe with a dry, soft cloth. Do not use volatile chemicals since this might cause discoloring and deformation.

3-1IM 755601-01E

3.2 Installing the Instrument

Installation condition

Install the instrument in a place that meets the following conditions.

Flat, even surface

Install the instrument on a stable horizontal surface. Otherwise, precise measurements may be impeded.

Ambient temperature and humidity

Ambient temperature: 5 to 40°C Ambient humidity: 20 to 80%RH (no condensation)

Do not install the instrument in the following places:

• Outdoor.

• In direct sunlight or near heat sources.

• Where an excessive amount of soot, steam, dust, or corrosive gases are present.

• Where the instrument is exposed to water or other liquids.

• Near strong magnetic field sources.

• Near high voltage equipment or power lines.

• Where the level of mechanical vibration is high.

• In an unstable place.

• In a place where the power switch cannot be accessed easily.

Note

• For the most accurate measurements, use the instrument in the following environment. Ambient temperature: 23±3°C, ambient humidity: 30 to 75%RH (no condensation) When using the instrument in a place where the ambient temperature is 5 to 18°C or 28 to 40°C, add the temperature coefficient to the accuracy of the module as specified in chapter 12, “Specifications.”

• When installing the instrument in a place where the ambient humidity is 30% or below, take measures to prevent static electricity such as using an anti-static mat.

• Internal condensation may occur if the instrument is moved to another place where both the ambient temperature and humidity are higher, or if the temperature changes rapidly. In this case, let the instrument adjust to the new environment for at least one hour before using the

instrument. Check to see that there is no condensation.

Installation position

Place the instrument on a flat, even surface as shown in the figure below. To adjust the handle position, pull the handle outward on each side along the axis of rotation by 2 to 3 mm, then slowly rotate the handle to another locked position.

Axis of rotation

Pull the handle outward on each side by 2 to 3 mm and rotate.

Locked positions of the handle

Storage Location

Do not store the instrument in the following kinds of places:

• Where the relative humidity is 80% or higher or where the temperature is 60°C or higher

• In direct sunlight or near heat sources

• Where an excessive amount of dust, salt, or iron is present

• Where there are corrosive or explosive gases

• Where water, oil, or chemicals may splash

• Where the level of mechanical vibration is high

We recommend that the instrument be stored in an environment where the temperature is between 5 and 40°C and the relative humidity is between 20 and 80% RH.

3-2 IM 755601-01E

3.3 Connecting the Power Cord

Before connecting the power

Follow the warnings below to avoid electric shock and damage to the instrument.

Connecting Procedure

1. Check that the power switch on the rear panel is OFF.

2. Connect the plug of the power cord that is included in the package to the power

3. Plug the other end of the power cord into a power outlet that satisfies the conditions

WARNING

• Connect the power cord only after confirming that the voltage of the power supply matches the rated electric power voltage for the instrument.

• Connect the power cord after checking that the power switch of the instrument is turned OFF.

• To prevent electric shock or fire, always use the power cord supplied by YOKOGAWA.

• Always use protective grounding to prevent electric shock. Connect the power cord of the instrument to a three-pole power outlet that has a protective grounding terminal.

• Never use an extension cord that does not have protective grounding, otherwise the protection function will be compromised.

connector on the rear panel of the instrument.

below. The AC outlet must be a three-pole type that has a protective grounding terminal.

Before Starting Measurements

Item Suffix Code -1 Suffix Code -4 Suffix Code -6 Suffix Code -8

Rated supply voltage 100 VAC 120 VAC 220 VAC 240 VAC Permitted supply voltage range 90 to 110 VAC 108 to 132 VAC 198 to 242 VAC 216 to 264 VAC Rated supply voltage frequency 50/60 Hz 50/60 Hz 50/60 Hz 50/60 Hz Permitted supply voltage frequency range 47 to 66 Hz 47 to 66 Hz 47 to 66 Hz 47 to 66 Hz Maximum power consumption 25 VA 25 VA 25 VA 25 VA

Three-pole outlet

Power cord (Standard accessory)

3-3IM 755601-01E

3.3 Connecting the Power Cord

Turning the Power Switch ON/OFF

Points to Check before Turning ON the Power

• Is the instrument properly installed? See section 3.2, “Installing the Instrument.” (page 3-2)

•Is the power cord properly connected? See section 3.3, “Connecting the Power Cord.” (page 3-3)

Turning ON/OFF the Power Switch

Turn ON the power by depressing the power switch on the rear panel to the “ON (|)” side and OFF by depressing it to the “OFF (O) side.”

Power Up Operation

When the power switch is turned ON, the instrument automatically starts a self-test. The self-test takes approximately 30 seconds. Upon successful completion, the top menu of

the SETUP mode ( measurement mode (the instrument recalls the condition that existed when the power was turned OFF). To make a measurement, press the SETUP/MEAS key (SHIFT+R/% key) to switch to the measurement mode.

If the Instrument Does Not Start Normary When the Power Is Turned On

If the instrument fails to power up as described or the top menu does not appear, turn OFF the power switch and check the following points.

• Is the power cord securely connected?

• Is the correct voltage coming to the power outlet? See page 3-3.

• If the power switch is turned ON while pressing the SHIFT key, the setup parameters are initialized to their factory default values. For details regarding initialization, see section 6.3, “Initializing Setup Parameters” on page 6-7.

If the instrument still fails to power up after checking these points, contact your nearest YOKOGAWA dealer for repairs.

or ) appears or the instrument enters the

For Making Accurate Measurements

Allow the instrument to warm up for at least 30 minutes after turning ON the power switch.

Shut Down Operation

The setup parameters that exist immediately before the power switch is turned OFF are stored in memory. The same is true when the power cord gets disconnected from the outlet. The next time the power switch is turned ON, the instrument powers up using the previous settings that existed immediately before the power was turned OFF.

Note

A lithium battery is used to retain the setup parameters. The battery has a limited lifetime. When the lithium battery voltage falls below a certain level, a “901” error code is displayed on the screen when the power switch is turned ON. When this error code appears, the battery must be replaced quickly. The user cannot replace the battery. For battery replacement, contact your nearest YOKOGAWA dealer.

3-4 IM 755601-01E

3.4 Wiring

CAUTION

Do not apply any voltage or current across the measurement input terminals and across the measurement input terminal and the guard (the outside of the BNC connector). The maximum common-mode voltage across the case and input terminals is ±42 Vpeak. Not meeting these conditions can damage the instrument.

Wiring Method

Connect BNC cables to each terminal as shown in the figure below.

CUR CURPOTPOT

Resistor under measurement

UNKNOWN

L H H

Do not connect a current/voltage source to the UNKNOWN terminals. It will damage the instrument.

ALL TERMINALS 42 V PEAK TO

Before Starting Measurements

Wiring Precautions

The accuracy specifications can only be met if the following conditions, given in the wiring example below, are provided. Wiring Example

CUR

Circuit used to detect disconnection

POT

Circuit used to

Constant current source for measurement

detect disconnection

POT

Circuit used to detect disconnection

CUR

Circuit used to detect disconnection

Pre-amp

Is: Test current Rx: Resistor under measurement r1, r2: Resistance of the lead wires (includes contact resistance)

Is × r1 ≤ 1.5 V: For checking the normal operation of the constant current

source r2 ≤ 15 Ω (for 1 Ω range): Because the circuit used to detect disconnection feeds a r2 ≤ 30 Ω (for other ranges) minimal amount of current so that it can detect disconnection

during measurement.

3-5IM 755601-01E

3.3 Connecting the Power Cord

Note

• When measuring a resistor that contains capacitive components in parallel, the response

• Since this instrument applies a pulse current to make measurements, when measuring a

• To minimize the influence from noise, make the lead wires as short as possible, and use

• Keep the capacitance of the shielded cable between the measurement input terminal and

• Do not connect the input terminals and the guard. Measurements cannot be made, under this

• For absolute value display (R), drifting occurs near the zero point when the input is shorted,

becomes slow and correct measurements may not be obtained. In this case, turn OFF the contact check function, and perform the measurement after the response is adequately stable.

resistor that has inductive components in series (wire wound resistor, for example), the response becomes slow and correct measurements may not be obtained. In addition, if the inductance exceeds 10 µH, it can cause resonance.

shielded cables. In addition, placing the resistor under measurement inside a shielded case and connecting the guard (outside of the BNC connector) and the shielded case with shielded cables are effective means of preventing noise.

guard (outside of the BNC connector) under 300 pF. Resonance can result if this value is exceeded.

condition.

possibly resulting in the display of a negative value. For deviation display (%), the display corresponding to -100% (when the input is shorted, for example) is represented by -99.9%, -99.99%, or -99.999%.

3-6 IM 755601-01E

LOCAL key GP-IB connector

Chapter 4 Setting the Measurement Conditions

4.1 Switching the Limit Mode

Keys

Indicator is off during SETUP mode

HIGH SPEED

MΩ

kΩ

STORE DATA

Ω

Procedure

NORMAL

MEAS& LOCK

SAMPLE

EXTERNAL

MANUAL

FAST

REFERENCE

The items that are specified or selected are confirmed when the ENTER (Ω,%) key is pressed. To exit from a menu in the middle of the operation, press the EXIT (R/%) key.

RECALL DATA

CHECK REMOTE

HI LIMIT

LO LIMIT

SETUP/MEAS

SHIFT

MEAS

TIME

Ω

STORE

DATA

REF LIMIT

R/%

EXIT

LOCAL

TRIG

MODE

CHECK

MISCI/F

Ω

ENTER

Ω

LIMIT

MODE

546

RECALL

DATA

Setting the Measurement Conditions

Explanation

Switching to the SETUP mode

1. Press the

SHIFT

SETUP/MEAS

R/%

key to switch to the SETUP mode. If the “MEAS & LOCK”

indicator is off, this operation is not necessary.

Switching the limit mode

2. 4.

LIMIT

SHIFT

MODE

REF LIMIT

[Main display]

(Deviation mode)

(Absolute mode)

Ω

ENTER

There are two limit modes. You can select whether to use a deviation (%) or an absolute value (R) for the comparator function.

• Deviation (%) mode: The measured value is handled as a deviation from the

specified reference value. The comparator function is also carried out in terms of the deviation.

• Absolute (R) mode: The measured value is handled as an absolute value. The

comparator function is also carried out in terms of the absolute value.

Precautions to be taken when switching the limit mode

The following parameters are initialized when the limit mode is switched. HI level, LO level, and REF (reference, when the limit mode is set to %)

4-1IM 755601-01E

4.2 Changing the Range (Reference)

When the limit mode is set to deviation (%)

Keys

HIGH

STORE

RECALL DATA

CHECK REMOTE

HI LIMIT

LO LIMIT

Procedure

NORMAL

FAST

SPEED

MEAS& LOCK

SAMPLE

EXTERNAL

MANUAL

REFERENCE

DATA

MΩ

kΩ

Ω

The items that are specified or selected are confirmed when the MΩ, kΩ, or ENTER (Ω,%) key is pressed. When confirmed, the new reference is displayed. To exit from a menu in the middle of the operation, press the EXIT (R/%) key. The display returns to the top menu of the SETUP mode.

SETUP/MEAS

SHIFT

MEAS

TIME

Ω

STORE

DATA

REF LIMIT

R/%

EXIT

LOCAL

TRIG

MODE

CHECK

Ω

MISCI/F

Ω

ENTER

Ω

LIMIT

MODE

546

RECALL

DATA

Switching to the SETUP mode

1. Press the

SHIFT

SETUP/MEAS

R/%

key to switch to the SETUP mode. If the “MEAS & LOCK” indicator is off (if PCnt or oHm is displayed on the main display), this operation is not necessary.

Changing the reference value

2. 4.

REF

3. Numerical keys

[REFERENCE display]

Ω

(Press when the unit is MΩ.)

CHECK

Ω

(Press when the unit is kΩ.)

MISC

Ω

(Press when the unit is Ω.)

ENTER

If the value entered using the numerical keys is not correct, an error (810) is displayed for approximately one second, and the display returns to step 3.

Explanation

When the reference value is entered, the range is automatically determined. The range and the display range are set according to the specified reference as follows. For the procedure to set the percent limit, see section 4.3, “Using the Comparator Function.”

When the percent limit is set to 9.99%

Reference Range Display Range

0.0001 to 1.0009 Ω 1 Ω “-99.999%

1.001 to 10.009 Ω 10 Ω to

10.01 to 100.009 Ω 100 Ω 19.999%”

0.1001 k to 1.0009 kΩ 1 kΩ (for 755611)

1.001 k to 10.009 kΩ 10 kΩ

10.01 k to 100.09 kΩ 100 kΩ

0.1001 M to 1.0009 MΩ 1 MΩ

1.001 M to 10.009 MΩ 10 MΩ

10.01 M to 120.00 MΩ 100 MΩ

*1 “-99.99% to 19.99%” for 755601

4-2 IM 755601-01E

When the percent limit is set to 99.9%

Reference Range Display Range

0.001 to 1.009 Ω 10 Ω “-99.99%

1.01 to 10.09 Ω 100 Ω to

10.1 to 100.09 Ω 1 kΩ 199.99%”

0.101 k to 1.009 kΩ 10 kΩ (for 755611)

1.01 k to 10.09 kΩ 100 kΩ

10.1 k to 100.9 kΩ 1 MΩ

0.101 M to 1.009 MΩ 10 MΩ

1.01 M to 10.09 MΩ 100 MΩ

10.1 M to 120.0 MΩ 100 MΩ

*2 “-99.9% to 199.9%” for 755601

4.2 Changing the Range (Reference)

When the limit mode is set to absolute (R)

When the limit mode is set to absolute (R), the range is fixed to 1 Ω. You cannot change this value. Maximum displayed value: 1.20000 (755611)

Measurement resolution: 10 µ Ω (755611)

Setting the Measurement Conditions

1.2000 (755601)

100 µ Ω (755601)

4-3IM 755601-01E

4.3 Using the Comparator Function

When the limit mode is set to deviation (%)

Keys

Indicates the comparator result

Set/Display HI limit value

HIGH

STORE

RECALL DATA

CHECK REMOTE

HI LIMIT

LO LIMIT

Procedure

NORMAL

FAST

SPEED

MEAS& LOCK

SAMPLE

EXTERNAL

MANUAL

REFERENCE

DATA

MΩ

kΩ

Ω

Set/Display LO limit value

The items that are specified or selected are confirmed when the ENTER (Ω,%) key is pressed. When confirmed, the new limit is displayed. To exit from a menu in the middle of the operation, press the EXIT (R/%) key. The display returns to the top menu of the SETUP mode.

SETUP/MEAS

SHIFT

MEAS

TIME

Ω

STORE

DATA

REF LIMIT

R/%

EXIT

LOCAL

TRIG

MODE

CHECK

Ω

MISCI/F

Ω

ENTER

Ω

LIMIT

MODE

546

RECALL

DATA

Switching to the SETUP mode

1. Press the

SHIFT

SETUP/MEAS

R/%

key to switch to the SETUP mode. If the “MEAS & LOCK” indicator is off, this operation is not necessary.

Changing the limit value (HI and LO values)

2. 4.

LIMIT

3. Numerical keys

[HI LIMIT display]

Ω

ENTER

5. Numerical keys

[LO LIMIT display]

Ω

ENTER

If the value entered using the numerical keys is not correct, an error (810) is displayed for approximately one second, and the display returns to step 3.

Selecting the percent limit

Ω

MISC

SHIFT

REF

[Main display]

LIMIT

(Plimit)

Ω

ENTER

REF LIMIT

[Main display]

Ω

ENTER

* For 755611. For 755601, select either “9.99” or “99.9.”

4-4 IM 755601-01E

Explanation

4.3 Using the Comparator Function

Setting range of limit values (HI and LO values)

The limit value is set in terms of the deviation (%) from the reference value that was set in section 4.3, “Changing the Range (Reference).”

Limit Value Setting Range

When the percent limit is 9.99% When the percent limit is 99.9%

Applies to both LO, HI -9.999% to 9.999% (755611) -99.99% to 99.99% (755611)

-9.99% to 9.99% (755601) -99.9% to 99.9% (755601)

However, LO ≤ HI

Note

If the values are set so that HI is less than LI, an error (815) occurs.

Selecting the percent limit

Percent limit refers to the display resolution when the measured values are handled in terms of deviation (%). Select the percent limit from the following two choices.

9.99%

99.9% Note that depending on the selected percent limit, the range of limit values (LO and HI values) varies as indicated in the above section “Setting range of limit values (HI and LO values).”

Note

• Changing the percent limit initializes the limit values (HI and LO) to 0%.

•If the percent limit is changed from 9.99% to 99.9%, the reference value is rounded to the least significant digit. However, if the limit mode is 9.99% and the reference value is between 0.0001 Ω to 0.0004 Ω, changing the limit mode to 99.9% changes the reference value to 0.001 Ω.

Comparator function

The measured value is compared to the specified limit values (HI and LO) and the result is indicated by turning ON the appropriate indicator. The comparator result is also output from the handler interface. The following comparison is made. When the measured value > HI : “HI” ( When the measured value < LO : “LO” (

When the measured value is between LO and HI : “IN” ( “–OL–” (overrange), : “HI” ( “–nC–” (contact check error), “–CF–” (Abnormality detected in the test current)

indicator) turns ON (red) indicator) turns ON (red)

indicator) turns ON (green)

indicator) turns ON (red)

Setting the Measurement Conditions

Note

The comparator function is carried out using fractions with greater accuracy than those displayed.

4-5IM 755601-01E

4.3 Using the Comparator Function

When the limit mode is set to absolute (R)

Keys

NORMAL

MEAS& LOCK

SAMPLE

EXTERNAL

MANUAL

FAST

REFERENCE

Procedure

The items that are specified or selected are confirmed when the ENTER (Ω,%) key is pressed. When confirmed, the new reference is displayed. To exit from a menu in the middle of the operation, press the EXIT (R/%) key. The display returns to the top menu of the SETUP mode.

HIGH SPEED

Indicates the comparator result

STORE

RECALL DATA

CHECK REMOTE

LO LIMIT

DATA

MΩ

kΩ

Ω

Set/Display LO limit value

Set/Display HI limit value

SETUP/MEAS

HI LIMIT

SHIFT

MEAS

TIME

Ω

STORE

DATA

REF LIMIT

R/%

EXIT

LOCAL

TRIG

MODE

CHECK

Ω

MISCI/F

Ω

ENTER

Ω

LIMIT

MODE

546

RECALL

DATA

Explanation

Switching to the SETUP mode

1. Press the

SHIFT

SETUP/MEAS

R/%

key to switch to the SETUP mode. If the “MEAS & LOCK”

indicator is off, this operation is not necessary.

Changing the limit values

LIMIT

3. Numerical keys 5. Numerical keys 6.

[HI LIMIT display] [LO LIMIT display]

Ω

ENTER

Ω

ENTER

If the value entered using the numerical keys is not correct, an error (810) is displayed for approximately one second, and the display returns to step 3.

Setting range of limit values

The setting range applies to both HI and LO.

Model Setting Range Resolution

755601 0.000 Ω to 1.200 Ω 1 mΩ 755611 0.0000 Ω to 1.2000 Ω 100 µ Ω

However, LO ≤ HI

Note

If the values are set so that HI becomes less than LI, an error (815) occurs.

Comparator function

Same as the description given in “When the limit mode is set to deviation (%).” See page 4-5.

4-6 IM 755601-01E

4.4 Using the Contact Check Function

2. 4.

6.5. Numerical keys

(Contact check level)

CHECK

ENTER

SHIFT

REF

LIMIT

Ω

ENTER

Ω

ENTER

Ω

[Main display]

Keys

Indicator is ON while contact check is in progress

HIGH

STORE

RECALL DATA

CHECK REMOTE

HI LIMIT

LO LIMIT

Ω

Procedure

NORMAL

FAST

SPEED

MEAS& LOCK

SAMPLE

EXTERNAL

MANUAL

REFERENCE

DATA

MΩ

kΩ

Ω

The items that are specified or selected are confirmed when the ENTER (Ω,%) key is pressed. When confirmed, the display returns to the top menu of the SETUP mode. To exit from a menu in the middle of the operation, press the EXIT (R/%) key. The display returns to the top menu of the SETUP mode.

SETUP/MEAS

R/%

SHIFT

EXIT

MEAS

LIMIT

TIME

MODE

546

STORE

RECALL

DATA

REF LIMIT

TRIG

MODE

CHECK

MISCI/F

Ω

ENTER

LOCAL

Ω

Setting the Measurement Conditions

Explanation

Switching to the SETUP mode

1. Press the

SHIFT

SETUP/MEAS

R/%

key to switch to the SETUP mode. If the “MEAS & LOCK”

indicator is off, this operation is not necessary.

Using the contact check

If the value entered using the numerical keys is not correct, an error (810) is displayed for approximately one second, and the display returns to step 5.

Contact check function

If the result of the contact check is larger than the specified check level, an error is generated. The time duration of the check is 2 ms, and the check current is 50 mA. The timing to perform the contact check can be selected from the following choices. OFF: Contact check is not performed. bEF: Contact check is performed before the measurement. If an error is detected, “–nC–” is

displayed and the “HI” indicator ( ) turns ON. “HI” “NO CONTACT” signal is output from the handler interface.

AFt: Contact check is performed after the measurement. If an error is detected, “–nC–”

is displayed and the “HI” indicator (

) turns ON. “HI” “NO CONTACT” signal is

output from the handler interface.

Setting range of the check level

1 to 30 Ω (1 Ω resolution).

4-7IM 755601-01E

4.5 Setting the Measurement Time

Keys

The appropriate indicator turns ON

HIGH

STORE

RECALL DATA

CHECK REMOTE

HI LIMIT

LO LIMIT

Procedure

NORMAL

FAST

SPEED

MEAS& LOCK

SAMPLE

EXTERNAL

MANUAL

REFERENCE

DATA

MΩ

kΩ

Ω

SETUP/MEAS

SHIFT

MEAS

TIME

Ω

STORE

DATA

REF LIMIT

R/%

EXIT

LOCAL

TRIG

MODE

CHECK

Ω

MISCI/F

Ω

ENTER

Ω

LIMIT

MODE

546

RECALL

DATA

Explanation

Switching to the SETUP mode

1. Press the

SHIFT

SETUP/MEAS

R/%

key to switch to the SETUP mode. If the “MEAS & LOCK”

indicator is off, this operation is not necessary.

Selecting the measurement time

LIMIT

[Main display]

Ω

ENTER

TIME

REF

SHIFT

MEAS

Measurement time

Select from the following choices.

Type Measurement Time* (when the measurement range is 1 Ω to 1 MΩ)

nor (NORMAL) 19.9 ms (for 60 Hz)

FASt (FAST) 5.7 ms H-SP (HIGH SPEED) 2.8 ms

* Measurement time: When the trigger mode is set to EXTERNAL, the time from the trigger

23.2 ms (for 50 Hz)

input to the falling edge of the EOM signal of the handler interface is called the measurement time. When the trigger mode is set to Manual or Internal, the EOM signal is not output. When the contact check function is ON (before the measurement), add 2 ms. When the contact check function is ON (after the measurement), add 1 ms. When a trigger delay is specified, add the delay time. When the measurement range is 10 MΩ, add 4 ms. When the measurement range is 100 MΩ, add 50 ms.

4-8 IM 755601-01E

4.6 Using the Trigger Function

Keys

Procedure

SHIFT

MEAS

TIME

STORE

DATA

SETUP/MEAS

REF LIMIT

R/%

EXIT

LOCAL

TRIG

MODE

CHECK

MISCI/F

Ω

ENTER

LIMIT MODE

546

RECALL

DATA

Ω

HIGH

MEAS& LOCK

SAMPLE

EXTERNAL

MANUAL

NORMAL

FAST

REFERENCE

SPEED

MΩ

kΩ

STORE DATA

Turns ON during manual trigger

Turns ON during external trigger

RECALL

CHECK REMOTE

DATA

Ω

HI LIMIT

Ω

LO LIMIT

Switching to the SETUP mode

1. Press the

SHIFT

SETUP/MEAS

R/%

key to switch to the SETUP mode. If the “MEAS & LOCK”

indicator is off, this operation is not necessary.

Selecting the trigger mode

LIMIT

[Main display]

(EXTERNAL)

(MANUAL)

Ω

ENTER

2. 4.

SHIFT

TRIG

MODE

TRIG

REF

Setting the Measurement Conditions

(INTERNAL)

Setting the trigger delay

Ω

MISC

SHIFT

REF

[Main display]

LIMIT

ENTER

5. Numerical keys

Ω

[Main display]

Ω

ENTER

If the value entered using the numerical keys is not correct, an error (810) is displayed for approximately one second, and the display returns to step 5.

4-9IM 755601-01E

TRIG

MODE

TRIG

4.6 Using the Trigger Function

Selecting the edge

SHIFT

MISC

[Main display]

Ω

REF

LIMIT

Explanation

Ω

ENTER

Manual trigger (only when the trigger mode is set to MANUAL)

1. Press the

SHIFT

SETUP/MEAS

R/%

key to switch to the measurement mode.

2. Trigger is activated every time the

REF LIMIT

key is pressed.

[Main display]

CAUTION

Applying a voltage outside the 0 to 5 V range to the external trigger input terminal (TRIGGER IN) can damage the instrument.

External trigger input terminal (TRIGGER IN) Specifications

Connector type : BNC Input level : CMOS Minimum pulse width : 100 µ s

Ω

ENTER

Input circuit (non-isolated)

+5 V

10 kΩ

+5 V

100 Ω

CMOS

4-10 IM 755601-01E

4.6 Using the Trigger Function

Selecting the trigger mode

Select from the following list of choices. EXTERNAL: Trigger is activated using the input signal at the external trigger input

terminal or the number 8 pin of the handler interface, and the measurement is made.

MANUAL: Measurement is made when the TRIG key is pressed or when a trigger is

activated using a communication command.

INTERNAL: Measurement is made at intervals according to the specified

measurement time.

Setting the trigger delay

The trigger delay setting takes effect when the trigger mode is set to EXTERNAL or MANUAL. The range and resolution are as follows: Range: 0 to 1000 ms Resolution: 0.1 ms

Selecting the trigger edge

The selected edge takes effect only when the trigger mode is set to EXTERNAL. Rise (rising edge): Trigger occurs at the rising edge of the signal. Fall (falling edge): Trigger occurs at the falling edge of the signal.

Measurement interval for INTERNAL (internal trigger)

When the trigger mode is set to INTERNAL, the measurement interval is set to the following values depending on the specified measurement time.

Measurement Time Measurement Interval

NORMAL 50 ms FAST 20 ms HIGH SPEED 10 ms

However, the measurement interval is adjusted by adding the appropriate values for the following cases: 5/10/15 ms when the pulse width of the EOM signal of the handler interface is set to 5/10/ 15 ms, respectively, 5 ms when the contact check function is ON, 5 ms when the range is 10 MΩ, and 50 ms when the range is 100 MΩ.

Setting the Measurement Conditions

4-11IM 755601-01E

LOCAL key

NORMAL

MEAS& LOCK

SAMPLE

EXTERNAL

REFERENCE

MANUAL

FAS T

HI LIMIT

EXIT

SETUP/MEAS

CHECK

MISCI/F

MEAS

TIME

STORE

DATA

RECALL

DATA

LOCAL

ENTER

LIMIT MODE

TRIG

MODE

SHIFT

R/%

REF LIMIT

TRIG

546

LO LIMIT

MΩ

Ω

kΩ

Ω

HIGH SPEED

STORE DATA

RECALL DATA

CHECK REMOTE

Displays the measured value

Indicator is ON during the measurement mode

Blinks every data sample

GP-IB connector

Chapter 5 Making Measurements

5.1 Setting the Measurement Mode

Keys

Procedure

Explanation

SETUP/MEAS

Press the

SHIFT

R/%

key to switch to the measurement mode. If the “MEAS & LOCK”

indicator is off, this operation is not necessary.

In the measurement mode, measurements are made according to the various specified settings such as the trigger mode, measurement time, and range. The measured value is displayed using seven-segment digital characters. You can not change the settings in the measurement mode. The following keys can be used in the measurement mode.

• SETUP/MEAS (SHIFT+R/%) key: Used to switch between the measurement and SETUP modes.

• TRIG key: Pressing this key when the trigger mode is set to MANUAL activates a trigger.

• R/% key: Used to switch the display when the limit mode is set to deviation (%).

• STORE DATA (SHIFT+0) key: Pressing this key while making measurements causes the “STORE DATA” indicator to turn ON and the instrument to enter a state in which data can be stored. Pressing this key while the instrument is storing data terminates the store operation.

• RECALL DATA (SHIFT+ .) key: Pressing this key while the instrument is recalling data (“RECALL DATA” indicator is ON) terminates the recall operation.

Making Measurements

The error displays for measured values are as follows:

• When the value is over the range:

• When a contact check error occurs:

• When abnormalities are detected in the test current:

For details regarding the error displays, see page 2-4.

5-1IM 755601-01E

5.1 Setting the Measurement Mode

Precautions to be taken during measurement

Precautions on the “HOLD” signal of the handler interface When the HOLD signal of the handler interface is set to “L,” the instrument switches to the measurement mode regardless of the mode it is currently in (the trigger mode is set to EXTERNAL), and makes measurements. Since the SETUP/MEAS key is locked, you will not be able to switch modes using the key. If you wish to do so, first, set the HOLD signal to “H,” then change the mode using the key or a communication command. Simply changing the HOLD signal from “L” to “H” does not change the mode. The measurement continues in this case.

Note

Use the SETUP mode to change the reference value and limit values.

Precautions to be taken when using the trigger input signal

When activating the trigger with the input signal applied to the external trigger input terminal on the rear panel or the number 8 pin of the handler interface (EXT TRIG), the unused terminal or pin must be set to open or HI level. Otherwise, the trigger will not function.

5-2 IM 755601-01E

5.2 Switching between Deviation (%) and Absolute (R) Displays

Keys

Procedure

Explanation

HIGH

STORE

RECALL

NORMAL

FAST

SPEED

MEAS& LOCK

SAMPLE

EXTERNAL

MANUAL

REFERENCE

1. Press the

LOCK” indicator is off, this operation is not necessary.

2. Press the

SHIFT

SETUP/MEAS

R/%

DATA

MΩ

kΩ

Ω

SETUP/MEAS

R/%

key to switch to the measurment mode. If the “MEAS &

key to set the displayed unit of the measured value to % (deviation

DATA

CHECK REMOTE

HI LIMIT

LO LIMIT

Ω

SETUP/MEAS

R/%

SHIFT

EXIT

MEAS

LIMIT

TIME

MODE

546

STORE

RECALL

DATA

REF LIMIT

TRIG

MODE

CHECK

MISCI/F

Ω

ENTER

LOCAL

Ω

display) or Ω (absolute display).

Switching between the deviation (%) and absolute (R) displays

You can switch the display during measurements (in the measurement mode). The display unit can be switched only when the limit mode is set to deviation (%).

Note

The measured value displayed in the deviation display may differ from that displayed in the absolute display by one digit due to the different methods used to handle the fractional values.

Making Measurements

5-3IM 755601-01E

LOCAL key GP-IB connector

Chapter 6 Other Functions

6.1 Store/Recall Measured Data

Keys

Indicator is ON while storing data

Indicator is ON while recalling data

HIGH

STORE

RECALL

DATA

MΩ

kΩ

Ω

Procedure

NORMAL

FAST

MEAS& LOCK

SAMPLE

EXTERNAL

MANUAL

REFERENCE

SPEED

CHECK REMOTE

HI LIMIT

LO LIMIT

SETUP/MEAS

SHIFT

MEAS

TIME

Ω

STORE

DATA

REF LIMIT

R/%

EXIT

LOCAL

TRIG

MODE

CHECK

MISCI/F

Ω

ENTER

Ω

LIMIT

MODE

546

RECALL

DATA

Other Functions

Setting the number of data sets to be stored

1. Press the

SHIFT

SETUP/MEAS

R/%

key to switch to the SETUP mode. If the “MEAS & LOCK”

indicator is off, this operation is not necessary.

STORE

SHIFT

DATA

Storing data

1. Pressing the

[Main display, number of data sets to store]

key in the measurement mode (“MEAS & LOCK” is ON)

STORE

SHIFT

DATA

4.3. Numerical keys

Ω

ENTER

causes the “STORE DATA” indicator to turn ON and the instrument to store one data set for every trigger. After storing the specified number of data sets, the store operation terminates and the “STORE DATA” indicator turns OFF.

Aborting the store operation

2. Pressing the

SHIFT

key while the store operation is in progress aborts the

STORE

DATA

operation and the “STORE DATA” indicator turns OFF. Then, the display returns to the top menu of the SETUP mode.

Recalling data

1. In the SETUP mode, press the

indicator.

2. Press the

SHIFT

SETUP/MEAS

R/%

key to switch to the measurement mode (“MEAS & LOCK” is

SHIFT

key to turn ON the “RECALL DATA”

RECALL

DATA

ON). A data set is recalled every time a trigger occurs. After recalling all stored data, the operation terminates and the “RECALL DATA” indicator turns OFF.

Aborting the recall operation

3. Pressing the

SHIFT

key while the recall operation is in progress aborts the

RECALL

DATA

operation and the “RECALL DATA” indicator turns OFF.

6-1IM 755601-01E

6.1 Store/Recall Measured Data

Note

• Pressing the STORE DATA (SHIFT+0) key in the measurement mode while the store

• Pressing the RECALL DATA (SHIFT+ .) key while the recall operation is in progress

Explanation

Storing measured data

Up to 2000 measured data sets can be stored in the internal memory. The data are cleared when the power is turned OFF or the settings are initialized. By using the optional Centronics interface, statistics on the stored data can be computed and printed to an external printer. For the procedures related to printing, see section 6.2.

Timing used to store or recall data

When the “STORE DATA” or “RECALL DATA” indicator is ON in the measurement mode, measured data are stored or recalled every time a trigger occurs. The timing used to store or recall data varies depending on the trigger mode as follows: EXTERNAL: Data are stored or recalled when a trigger is activated using the input

MANUAL: Data are stored or recalled when the TRIG key is pressed or when a

INTERNAL: Data are stored or recalled at measurement intervals according to the

operation is in progress (“STORE DATA” indicator is ON) aborts the operation and continues the measurement.

(“RECALL DATA” indicator is ON) aborts the operation and continues the measurement.

signal at the external trigger input terminal or the number 8 pin of the handler interface.

trigger is activated using a communication command.

specified measurement time. For details regarding the measurement interval, see page 4-11.

Precautions to be taken when storing data

• The STORE DATA (SHIFT+0) key can be used even in the measurement mode (when the measurement is in progress).

• Executing a store operation, clears the previously stored data.

• Data cannot be stored when the “RECALL DATA” indicator is ON. An error (831) is displayed in this case.

• When the store operation is aborted, data stored up to that point can be recalled.

Precautions to be taken when recalling data

• Data are recalled in order from the first data in the memory. After recalling all of the data, the instrument continues the measurement.

• Data cannot be recalled when the “STORE DATA” indicator is ON. An error (832) is displayed in this case.

• If there are no stored data in the memory, an error (830) is displayed for approximately one second, and the display returns to the top menu of the SETUP mode.

6-2 IM 755601-01E

6.2 Printing Data

Keys

Procedure

SETUP/MEAS

R/%

SHIFT

EXIT

MEAS

LIMIT

TIME

MODE

546

STORE

RECALL

DATA

REF LIMIT

LOCAL

MEAS& LOCK

SAMPLE

EXTERNAL

MANUAL

NORMAL

FAST

REFERENCE

HIGH SPEED

MΩ

kΩ

STORE DATA

Ω

RECALL DATA

CHECK REMOTE

HI LIMIT

LO LIMIT

Ω

SETUP/MEAS

1. Press the

SHIFT

R/%

key to switch to the SETUP mode. If the “MEAS & LOCK”

indicator is off, this operation is not necessary.

2. Store the measured data according to the procedures given in section 6.1, “Store/ Recall Measured Data.”

Selecting whether or not to output the measured data

Ω

SHIFT

MISC

REF

LIMIT

[Main display]

Ω

ENTER

REF LIMIT

[Main display]

TRIG

MODE

CHECK

MISCI/F

Ω

ENTER

Ω

Other Functions

Ω

ENTER

6-3IM 755601-01E

6.2 Printing Data

Ω

MISC

SHIFT

Explanation

REF

Start/Stop printing

[Main display] [Main display]

LIMIT

Ω

ENTER

REF LIMIT

Ω

ENTER

(Indicates that data are being transferred to the printer)

Ω

(Abort printing)

ENTER

By using the optional Centronics interface, statistics on the stored data can be computed and printed to an external printer.

CAUTION

Use a Centronics printer cable to connect an external printer to the instrument. A bad connection can damage the instrument and/or other devices that are connected to it.

Pin arrangement of the Centronics interface connector

For details, contact your nearest YOKOGAWA dealer.

Pin No.

Pin No. 1 2

9 10 11 12 13 14 15 16 17 18

Signal STROBE (Strobe) DATA0 (Print data bit 0)

DATA7 (Print data bit 7) ACK (Acknowledge) BUSY (Busy) PE (Paper end) SLCT (Select) NC (No connection) NC (No connection) GND (Ground) GND (Ground) NC (No connection)

Pin No. 19

30 31 32 33 34 35 36

Signal GND (Ground)

GND (Ground) INIT (Initialize printer) ERROR (Error) GND (Ground) NC (No connection) NC (No connection) NC (No connection)

6-4 IM 755601-01E

6.2 Printing Data

Output items

Output Items Description, Limitations

Number of stored data points Reference value Not output when the limit mode is set to absolute (R). Limit values (LO, HI) Comparator result Frequencies of HI, IN, and LO results Contact check error Frequencies of –nC– and –CF– results Statistics

Number of valid samples Number of invalid samples Frequencies of oL, nC, and CF results Max. and min. values of data P-P value of data Maximum value – minimum value Data average Standard deviation of data (σ) 3σ of data

Stored measurement data Select whether or not to output data

Selecting whether or not to output measured data

You can select whether or not to output measured data and the paper size used for printing oFF.rP: Print to a paper size (roll paper) on which 40 characters can be printed

horizontally and do not output the stored measurement data.

on.rP: Print to a paper size (roll paper) on which 40 characters can be printed

horizontally and output the stored measurement data. oFF.A4: Print to an A4 size paper, and do not output the stored measurement data. on.A4: Print to an A4 size paper, and output the stored measurement data.

Other Functions

Start/Stop printing

Selecting “on” in the printing start/stop menu starts the print operation. “Print” is displayed while data transfer is in progress. Selecting “on” in the printing start/stop menu stops the print operation.

Precautions to be taken while printing

• After printing all items, printing is automatically turned OFF.

• To stop printing, set the print setting to OFF. The printing will be aborted.

• An error (830) is displayed when there are no stored data.

• Since printing is done in the SETUP mode, measurements cannot be made while

printing.

• The measurement and SETUP modes cannot be switched while printing.

• If the HOLD signal of the handler interface changes to “L” (active) while printing, the

instrument aborts the printing operation and starts the measurement.

Note

Statistics are determined on the values that are displayed.

6-5IM 755601-01E

6.2 Printing Data

Print example

6-6 IM 755601-01E

6.3 Initializing the Setup Information

Keys

Procedure

SETUP/MEAS

R/%

SHIFT

EXIT

MEAS

LIMIT

TIME

MODE

546

STORE

RECALL

DATA

REF LIMIT

TRIG

MODE

CHECK

MISCI/F

Ω

ENTER

LOCAL

Ω

MEAS& LOCK

SAMPLE

EXTERNAL

MANUAL

NORMAL

FAST

REFERENCE

HIGH SPEED

MΩ

kΩ

STORE DATA

Ω

RECALL DATA

CHECK REMOTE

HI LIMIT

LO LIMIT

Ω

Initializing the settings

SETUP/MEAS

1. Press the

SHIFT

R/%

key to switch to the SETUP mode. If the “MEAS & LOCK”

indicator is off, this operation is not necessary.

Ω

SHIFT

MISC

REF

[Main display]

LIMIT

Other Functions

Explanation

Ω

ENTER

Resetting the instrument to the factory default settings

Turn ON the power switch on the rear panel while pressing the

key. Keep pressing

SHIFT

the SHIFT key until the top menu appears on the screen.

The setup information can be set to “initial settings” or “factory default settings.” This act is called initializing. Initializing the setup information does not initialize settings related to communications. For details related to the initializing of the setup information, see section 1.4, “A List of Initial Values.”

6-7IM 755601-01E

LOCAL key GP-IB connector

Chapter 7 Using the Handler Interface

7.1 Handler Interface Functions and Specifications

Handler Interface Specifications

The types of interface signals are as follows:

• Comparator result output signal (HI, IN, LO)

• Handshaking signal (EXT TRIG, INDEX, EOM)

• Key lock control signal (HOLD)

• Power supply (+12V, COM)

Specifications

Pin No. Signal Active Cond. I/O Function/Operation

1HIL Output L when the comparator result is HI 2INL Output L when the comparator result is IN 3LOL Output L when the comparator result is LO 4 NO CONTACT L Output L when a contact check error occurs or when

an abnormality is detected in the test current 7 +12 V — Output Power supply 8 EXT TRIG Specified edge Input External trigger signal*1 9 EOM L Output L when the measurement is complete and

the comparator result is output*2 10 HOLD L Input Key lock*3 11 INDEX L Output H during trigger input, L when data collection

is complete*4 14 COM — — Common

*1 The minimum pulse width is 100 µs. *2 The pulse width can be set to 0.1, 5, 10, or 15 ms. The initial setting is 10 ms. *3 When the signal is in the active state (L), the instrument switches to the measurement mode

regardless of the mode it is currently in (the trigger mode is set to EXTERNAL), and makes measurements. In addition, all keys other than the R/% and STORE DATA keys are disabled (key lock). When the signal changes from L to H, all keys are enabled. Thus, you can press the SETUP/MEAS key to switch to the SETUP mode.

*4 When the contact check (after measurement) is enabled, this signal is set to L when the

contact check completes.

Using the Handler Interface

CAUTION

• The maximum common-mode voltage across the case and each input/output terminal (pin) is ±42 V peak. Applying a voltage that exceeds this level can damage the instrument.

• Do not apply a voltage that exceeds the maximum input voltage (+12 V) to the input terminal (pin). Do not connect a load to the output terminal (pin) that would cause the maximum load current (25 mA) to be exceeded. Do not apply a voltage that exceeds the maximum load voltage (30 V) to the output terminal (pin). Do not connect a load to the power terminal that would cause the maximum load current (50 mA) to be exceeded. In all of the previous cases, non-compliance with the specifications can damage the instrument.

• Do not apply a negative voltage to the input and ouput terminals (pins) with respect to the common signal (COM). Doing so can damage the instrument.

Note

To minimize the influence from electro-magnetic interference, use a shielded cable for making connections. In addition, connect the cable’s shield to the connector case of the cable.

7-1IM 755601-01E

7.1 Handler Interface Functions and Specifications

Output Signal Behavior

The behavior of the INDEX, EOM, NO CONTACT, HI, IN, and LO output signals varies depending on the trigger mode as follows:

When the trigger mode is set to EXTERNAL

INDEX: The signal is generated (set to L) when a trigger occurs, regardless of

the measurement result.

EOM: The signal is generated (set to L) when the measurement completes

once, regardless of the measurement result.

NO CONTACT: The signal is generated (set to L) when the measurement results in a

contact check error (nC) or when the test current is abnormal (CF).

HI: The signal is generated (set to L) when the comparator result of the

measured value is HI. The signal is also generated (set to L) when the measurement results in over-range (oL), contact check error (nC), or when the test current is abnormal (CF).

IN: The signal is generated (set to L) when the comparator result of the

measured value is IN.

LO: The signal is generated (set to L) when the comparator result of the

measured value is LO.

When the trigger mode is set to MANUAL or INTERNAL

INDEX: The signal is not generated (stays at H). EOM: The signal is not generated (stays at H). NO CONTACT: The signal is generated (set to L) when the measurement results in a

contact check error (nC) or when the test current is abnormal (CF).

HI: The signal is generated (set to L) when the comparator result of the

measured value is HI. The signal is also generated (set to L) when the measurement results in over-range (oL), contact check error (nC), or when the test current is abnormal (CF).

IN: The signal is generated (set to L) when the comparator result of the

measured value is IN.

LO: The signal is generated (set to L) when the comparator result of the

measured value is LO.

7-2 IM 755601-01E

Pin Arrangement, Shape

7.1 Handler Interface Functions and Specifications

1 Pin No.

For details, contact your nearest YOKOGAWA dealer.

Input Circuit (Isolated)

EXT TRIG HOLD

Output Circuit (Isolated)

+12V

1.65 kΩ

+12 V

INDEX, EOM NO CONTACT HI, IN, LO

COM

Using the Handler Interface

7-3IM 755601-01E

7.2 Setting the Pulse Width of the EOM Signal

Keys

Procedure

MEAS& LOCK

SAMPLE

EXTERNAL

MANUAL

NORMAL

FAST

REFERENCE

HIGH SPEED

MΩ

kΩ

STORE DATA

RECALL

CHECK REMOTE

DATA

Ω

HI LIMIT

Ω

LO LIMIT

SHIFT

MEAS

TIME

STORE

DATA

SETUP/MEAS

REF LIMIT

R/%

EXIT

LIMIT

MODE

546

RECALL

LOCAL

DATA

SETUP/MEAS

1. Press the

SHIFT

R/%

key to switch to the SETUP mode. If the “MEAS & LOCK”

indicator is off, this operation is not necessary.

Ω

MISC

SHIFT

REF

[Main display]

LIMIT

TRIG

MODE

CHECK

Ω

MISCI/F

Ω

ENTER

Ω

Explanation

Ω

ENTER

(Eom)

Ω

ENTER

REF LIMIT

[Main display]

The measurement time is the time elapsed from the trigger input to the falling edge of the EOM signal. The pulse width of the EOM signal (from the falling edge to the rising edge) can be selected from the following choices.

0.1 ms, 5 ms, 10 ms, 15 ms

7-4 IM 755601-01E

7.3 Timing Chart

The measurement timing varies depending on the trigger mode, contact check, and other settings. The timing chart when the trigger mode is set to EXTERNAL (external trigger) is shown below.

When the contact check is OFF

EXT TRIG (Example )

(Trigger delay)

(Integral time)

INDEX

HI, IN, LO

EOM

When the contact check is ON (before measurement)

EXT TRIG (Example )

(Trigger delay)

Using the Handler Interface

(Integral time)

(Contact check period)

INDEX

HI, IN, LO

EOM

7-5IM 755601-01E

7.3 Timing Chart

When the contact check is ON (after measurement)

EXT TRIG (Example )

(Trigger delay)

(Integral time)

(Contact check period)

INDEX

HI, IN, LO

EOM

7-6 IM 755601-01E

LOCAL key GP-IB connector

Chapter 8 Using the Serial (RS-232) Interface

8.1 Serial (RS-232) Interface Functions and Specifications

Receiving Function

All of the parameters that you set with the panel keys can be set through the serial interface except turning the power switch ON/OFF and setting the communication parameters. Output requests for measured/statistical data, setup information, and error codes can be also be received through the serial interface.

Sending Function

Measured/statistical data can be output. Setup information and status byte can be output. Error codes that have occurred can be output.

RS-232 Interface Specifications

Electrical, mechanical characteristics: Conforms to the EIA-574 standard (for the 9-pin

interface of the EIA-232 (RS-232) standard) Connection: Point-to-point Communication: Full-duplex Synchronization: Start-stop synchronization Baud rate: 1200, 2400, 4800, 9600, 19200 Start bit: 1 bit (fixed) Data length: 7 or 8 bits Parity: Even, odd, none Stop bit: 1 or 2 bits Connector: For details contact your nearest YOKOGAWA dealer. Hardware handshaking: User can select whether to fix the CA and CB

signals to TRUE or use the signal for flow control. Software handshaking: User can select whether to use the X-ON and X-

OFF signals to control only the transmitted data

or both transmitted and received data.

X-ON (ASCII 11H)

X-OFF (ASCII 13H)

Received buffer size: 256 bytes

Using the Serial (RS-232) Interface

Switching between Remote and Local Modes

When switching from local to remote mode

Receiving a “ the local mode causes the instrument to switch to the remote mode.

• The “REMOTE” indicator turns ON.

• All keys other than the LOCAL key are locked.

• The settings that existed in the local mode are maintained even when the instrument

switches to the remote mode.

When switching from remote to local mode

Pressing the LOCAL key when the instrument is in the remote mode causes the instrument to switch to the local mode. However, this act produces no result if the “:COMMunicate:

LOCKout ON” command has been received from the PC (local lockout condition).

When the “ to the local mode regardless of the local lockout condition.

• “REMOTE” indicator turns OFF.

• Key operations are enabled.

• The settings that existed in the remote mode are maintained even when the

instrument switches to the local mode.

:COMMunicate:REMote ON” command from a PC when the instrument is in

:COMMunicate:REMote OFF” is received from the PC, the instrument switches

8-1IM 755601-01E

8.2 Connecting the Serial (RS-232) Interface Cable

When connecting this instrument to a PC, make sure the handshaking methods, data transmission rates, and data formats match those selected on the PC. For details, see the following pages. Also, make sure to use interface cables that match the specifications of the instrument.

Connector and Signal Names

For details contact your nearest YOKOGAWA dealer.

2 RD (Received Data): Data received from the PC.

Signal direction: Input

3 SD (Send Data): Data transmitted to the PC.

Signal direction: Output 5 SG (Signal Ground): Ground for signals. 7 RS (Request to Send): Signal used for handshaking when receiving data from the PC.

Signal direction: Output 8 CS (Clear to Send): Signal used for handshaking when transmitting data to the PC.

Signal direction: Input * Pins 1, 4, 6, and 9 are not used.

9-25 Pin Connector and Signal Names

(2) (3)(4) (5) (7)

The numbers in parentheses corresponds to the pin numbers on the 25-pin connector.

58723

Signal Direction

The figure below shows the directions of the signals used by the RS-232 interface of this instrument.

RS [Request to send]

CS [Clear to send] SD [Send data] RD [Receive data]

7 8

755601/ 755611

8-2 IM 755601-01E

8.2 Connecting the Serial (RS-232) Interface Cable

Table of EIA-574 Standard Signals and Their JIS and CCITT Abbreviations

Pin No.

(9-pin connector)

RS-232

AB (GND)

BA (TXD)

BB (RXD)

CA (RTS)

CB (CTS)

Abbreviation

CCITT

102 SG

103

104

105

106

JIS

Description

Signal ground

Transmitted data

Received data

Request to send

Clear to send

Connection Examples of Signal Lines

The pin numbers shown are those of 9-pin connectors. In general, use a cross cable.

• OFF-OFF / XON-XON

PC 755601/755611

SD RD RS CS SG

3 2 7 8 5

RS CS

• XON-RTS(XON-RS)

PC 755601/755611

SD RD RS CS SG

3 2 7 8 5

SD RD RS CS SG

• CTS-RTS(CS-RS)

PC 755601/755611

3 2

RD RS

7 8

3 2

RD RS

7 8

Using the Serial (RS-232) Interface

8-3IM 755601-01E

8.3 Handshaking

When using the serial (RS-232) interface for transferring data, it is necessary for equipment on both sides to agree on a set of rules to ensure the proper transfer of data. The set of rules is called handshaking. Because there are many handshaking methods that can be used between the instrument and the PC, one must make sure that the same method is chosen by both the instrument and the PC. You can choose any of the four methods shown in the following table.

Table of Handshaking Methods ( indicates that it is supported)

Data Transmission Control

(Control used to send data to a PC)

Hardware

handshaking

Stops transmission when CB(CTS) is false. Resume when it is true.

handshaking

Handshaking method

Instrument's menu

OFF-OFF

XON-XON

XON-RS

CS-RS

Software

handshaking

Stops transmission when X-OFF is received. Resume when X-ON is received.

HA. 0

HA. 1 HA. 2

HA. 3

Data Reception Control

(Control used to receive data from a PC)

Software

handshaking

Send X-OFF when thereceived data buffer is 3/4th filled. Send X-ON when the received data buffer becomes 1/4th filled.

Hardware

handshaking

Set CA(RTS) to False when the received data buffer is 3/4th filled. Set to True when the received data buffer becomes 1/4th filled.

handshaking

OFF-OFF

XON-XON

Data transmission control

There is no handshaking between the instrument and the PC. The X-OFF and X-ON signals are treated as data, and the CS signal is ignored.

Data reception control

There is no handshaking between the instrument and the PC. When the received buffer becomes full, all overflow data are discarded. The RS signal is fixed to True.

Data transmission control

Software handshaking is performed between the instrument and the PC. When an XOFF code is received while sending data to the PC, the instrument stops the data transmission. When it receives the next X-ON code, it resumes the data transmission. The CS signal received from the PC is ignored.

Data reception control

Software handshaking is performed between the instrument and the PC. When the free area of the receive buffer decreases to 64 bytes, the instrument sends an X-OFF code. When the free area increases to 192 bytes, it sends an X-ON code. The RS signal is fixed to True.

8-4 IM 755601-01E

XON-RS

CS-RS

8.3 Handshaking

Data transmission control

Data reception control

Hardware handshaking is performed between the instrument and the PC. When the free area of the receive buffer decreases to 64 bytes, the instrument sets “RS=False.” When the free area increases to 192 bytes, it sets “RS=True.”

Data transmission control

Hardware handshaking is performed between the instrument and the PC. When the CS signal becomes False while sending data to the PC, the instrument stops the data transmission. When the CS signal becomes True, it resumes the data transmission. XOFF is treated as data.

Data reception control

Precautions to be taken with respect to Data Reception Control

When handshaking is used to control the data reception, additional data may be received even when the free area drops below 64 bytes. If the receive buffer becomes full, all overflow data are discarded regardless of the handshaking control. When the free area becomes available again, it will be able to store data once again.

256 bytes

When handshaking is used, the instrument signals the PC to stop when data in the buffer cannot be processed fast enough and the free area drops to 64 bytes.

After the data reception is stopped as described above, data in the buffer continues to be passed to the internal program. When the free area increases to 192 bytes, it resumes data reception.

If the buffer becomes full in spite of the handshaking control, all overflow data are discarded.

Used

Used 64 bytes free

192 bytes free

Used

Data Reception Control using Handshaking

Note

The program on the PC must be designed so that the receive buffers on the instrument and the PC do not become FULL.

Using the Serial (RS-232) Interface

8-5IM 755601-01E

8.4 Data Format

The serial (RS-232) interface on the instrument communicates using start-stop synchronization. With the start-stop synchronization, a start bit is added every time a character is transmitted. The start bit is followed by the data bits, parity bit, and stop bit. (See the figure below.)

Circuit idle state

1 character

Data bits

(7 or 8 bits)

Circuit back to idle state (dotted line) or the start bit of the next data (solid line)

Stop bit

Start bit

Parity bit Even, odd or none

1 or 2 bits

8-6 IM 755601-01E

8.5 Serial Communication Settings

Keys

Indicator is ON during the remote mode

HIGH

STORE

RECALL DATA

CHECK REMOTE

Ω

ENTER

HI LIMIT

LO LIMIT

REF

Procedure

SHIFT

NORMAL

FAST

SPEED

MEAS& LOCK

SAMPLE

EXTERNAL

MANUAL

REFERENCE

DATA

MΩ

kΩ

Ω

SETUP/MEAS

1. Press the

SHIFT

R/%

key to switch to the SETUP mode. If the “MEAS & LOCK”

indicator is off, this operation is not necessary.

[Main display]

I/F

REF

LIMIT

SETUP/MEAS

SHIFT

MEAS

TIME

Ω

STORE

DATA

REF LIMIT

R/%

EXIT

LOCAL

TRIG

MODE

CHECK

MISCI/F

Ω

ENTER

Ω

LIMIT

MODE

546

RECALL

DATA

Ω

ENTER

(Mode)

13.

REF

LIMIT

(Handshaking method)

LIMIT

(Terminator)

14.

Ω

ENTER

Ω

ENTER

REF

15.

REF

LIMIT

(Data format)

LIMIT

(Add/not add the header)

10.

Ω

ENTER

16.

ENTER

Using the Serial (RS-232) Interface

11.

REF

LIMIT

12.

Ω

ENTER

(Baud rate)

Ω

8-7IM 755601-01E

8.5 Serial Communication Settings

Explanation

When you wish to use a PC to set the information that can be specified using the keys on the instrument, or output setup information or measured data to a PC, set the serial interface as follows.

Selecting the mode

Select the mode from the following list of choices. nor (normal mode): Select this mode when you wish to use a PC to set the information that

onLY (talk-only mode): Select this mode when you wish to output measured data to other

Selecting the handshaking method

Select the data transmission and reception controls from the following list of choices.

Setting Handshaking Method

HA. 0 OFF-OFF HA. 1 XON-XON HA. 2 XON-RS HA. 3 CS-RS

can be specified using the keys on the instrument, or output setup information or measured data in response to a request from a PC.

devices every time a trigger occurs, not in response to a request from a PC. Settings and output requests received from a PC are ignored.

Selecting the data format

Select the combination of the data length, parity, and stop bit from the following list of choices.

Setting Data Length Parity Bit Stop Bit

dF. 0 8 None 1 dF. 1 7 Odd 1 dF. 2 7 Even 1 dF. 3 7 None 2

Selecting the baud rate

Select the baud rate from the following list of choices.

Setting Baud Rate

br. 0 1200 br. 1 2400 br. 2 4800 br. 3 9600 br. 4 19200

Selecting the terminator

Select the terminator that is used when transmitting data from the instrument from the following list of choices. Use “LF” or “CR+LF” for the terminator that is used to receive data on this instrument.

Setting Terminator

tr. 0 CR+LF tr. 1 LF tr. 2 CR

Add or not add the header

Select whether or not to add a header (measurement information) to the measured data that are transmitted. The header includes the comparator result, error information, and the unit of the measured data (%, Ω).

Setting Header

HE. 0 No header HE. 1 Add header

8-8 IM 755601-01E

LOCAL key GP-IB connector

Chapter 9 Using the GP-IB Interface

9.1 GP-IB Interface Functions and Specifications

GP-IB Interface Functions

Listener function

• All of the information that you set with the panel keys can be set through the GP-IB interface except turning the power switch ON/OFF and setting the communication parameters.

• Receives commands from a controller requesting the output of setup information, measured/statistical data, and other information.

• Also receives status report commands.

Talker function

Outputs setup information, measured/statistical data, and other information.

Talk-only function

Outputs measured data without the need to use a controller. This function is useful when you wish to output data to a printer or a listen-only device.

Note

Listen-only and controller functions are not available on this instrument.

Switching between Remote and Local Modes

When switching from local to remote mode

Receiving a REN (Remote Enable) message from the controller when the instrument is in the local mode causes the instrument to switch to the remote mode.

• The “REMOTE” indicator turns ON.

• All keys other than the LOCAL key are locked.

• The settings that existed in the local mode are maintained even when the instrument switches to the remote mode.

When switching from remote to local mode

Pressing the LOCAL key when the instrument is in the remote mode causes the instrument to switch to the local mode. However, this act is produces no result if the instrument has been set to Local Lockout mode (see page 9-4) by the controller.

• “REMOTE” indicator turns OFF.

• Key operations are enabled.

• The settings that existed in the remote mode are maintained even when the instrument switches to the local mode.

Using the GP-IB Interface

9-1IM 755601-01E

9.1 GP-IB Interface Functions and Specifications

GP-IB Interface Specifications

Electrical and mechanical specifications: Conforms to IEEE St’d 488.1-1987. Interface Functions: See the table below. Protocol: IEEE St’d 488.2-1992. Code: ISO (ASCII) code Mode: Addressable mode/Talk-only mode Address setting: The address can be set in the range from 0 to

Remote mode clear: Remote mode can be cleared by pressing the

Interface Functions

Functions Subset Name Description

Source handshaking SH1 Full source handshaking capability

Acceptor handshaking AH1 Full acceptor handshaking capability

Talker T5 Basic talker capability, serial polling, untalk on MLA (My

Lister L4 Basic listener capability, unlisten on MTA, no listen-only

Service request SR1 Full service request capability

Remote local RL1 Full remote/local capability

Parallel polling PP0 No parallel polling capability

Device clear DC1 Full device clear capability

Device trigger DT1 Full device trigger capability

Controller C0 No controller function

Electrical characteristic E1 Open collector

30 using the address setting menu that is displayed with the I/F key (SHIFT+3).

LOCAL key except when the instrument has been set to Local Lockout mode by the controller.

Listen Address), talk-only capability.

capability.

9-2 IM 755601-01E

9.2 Connecting the Interface Cable

GP-IB Cable

The GP-IB connector used on this instrument is a 24-pin connector that conforms to the IEEE St’d 488.1-1987. Use a GP-IB cable that conforms to this standard.

Connection Procedure

Connect the cable as shown below.

Precautions to be taken when Connecting the Cable

• Firmly tighten the screws on the GP-IB cable connector.

• Multiple devices can be connected using multiple cables. However, no more than 15 devices (including the controller) can be connected to a single bus.

• When connecting multiple devices, each device must have its own unique address.

• Use a cable of length 2 m or less for connecting the devices.

• Make sure the total cable length does not exceed 20 m.

• When communicating, have at least two-thirds of the devices turned ON.

• When connecting multiple devices, connect them in a star or linear configuration (see the diagram below). Loop and parallel configurations are not allowed.

CAUTION

Make sure to turn OFF the PC and the instrument before connecting or disconnecting cables. Otherwise, improper operation and/or damage to the internal circuitry may result.

Using the GP-IB Interface

9-3IM 755601-01E

9.3 Responses to Interface Messages

Responses to Interface Messages

Responses to a uni-line message IFC(Interface Clear)

Clears the talker and listener functions. Stops output if data are being output.

REN(Remote Enable)

Switches between the remote and local modes.

IDY (Identify) is not supported.

Responses to a multi-line message (address command) GET(Group Execute Trigger)

Generates a trigger when the trigger mode is set to MANUAL. The operation is the same as the “

GTL(Go To Local)

Switches to the local mode.

SDC(Selected Device Clear)

• Clears the program message (command) being received and the output queue (see page 10-40).

• The

•

*WAI and COMMunicate:WAIT commands are immediately terminated.

*TRG” command.

*OPC command and *OPC? query that are in execution are disabled.

PPC (Parallel Poll Configure) and TCT(Take Control) are not supported.

Responses to a multi-line message (universal command) LLO(Local Lockout)

Disables the Local key on the front panel to prohibit switching to the local mode.

DCL(Device Clear)

Same operation as the SDC message.

SPE(Serial Poll Enable)

Sets the talker function on all devices on the bus to serial polling mode. The controller polls the devices in order.

SPD(Serial Poll Disable)

Clears the serial polling mode of the talker function on all devices on the bus.

PPU (Parallel Poll Unconfigure) is not supported.

What is an Interface Message

Interface messages are also referred to as interface commands or bus commands. They are commands that are issued by the controller. They are classified as follows.

Uni-line messages

A single control line is used to transmit uni-line messages. The following three messages are available. IFC (Interface Clear) IDY (Identify) REN (Remote Enable)

9-4 IM 755601-01E

9.3 Responses to Interface Messages

Multi-line messages

Eight data lines are used to transmit multi-line messages. The messages are classified as follows:

Address commands

These commands are valid when the instrument is designated as a listener or as a talker. The following five commands are available.

Commands that are valid on an instrument that is designated as a listener GTL (Go To Local) PPC (Parallel Poll Configure) SDC (Selected Device Clear) GET (Group Execute Trigger)

Commands that are valid on an instrument that is designated as a talker TCT(Take Control)

Universal commands

These commands are valid on all instruments regardless of the listener and talker designations. The following five commands are available. LLO (Local Lockout) DCL (Device Clear) PPU (Parallel Poll Unconfigure) SPE (Serial Poll Enable) SPD (Serial Poll Disable)

In addition, listener address, talker address, and secondary commands are also considered interface messages.

Interface Messages

Uni-line

Messages

♦IFC ♦REN

IDY

Listener address

Talker

address

Multi-line Messages

Address

command

♦GTL ♦SDC

PPC

♦GET



TCT

Universal

command

♦LLO ♦DCL

PPU

♦SPE ♦SPD

Secondary

command

The instrument supports those interface messages that are indicated with “♦” marks.

Note

The differences between SDC and DCL Of the multi-line messages, SDC messages are those that require talker or listener designation and DCL messages are those that do not require the designation. Therefore, SDC messages are directed at a particular instrument while DCL messages are directed at all instruments on the bus.

Using the GP-IB Interface

9-5IM 755601-01E

9.4 Switching to the Addressable Mode

Keys

Indicator is ON during the remote mode

HIGH

STORE

RECALL DATA

Ω

ENTER

CHECK REMOTE

HI LIMIT

LO LIMIT

Ω

ENTER

REF

SHIFT

MEAS

TIME

Ω

STORE

DATA

REF

LIMIT

(Add/not add the header)

Procedure

NORMAL

FAST

SPEED

MEAS& LOCK

SAMPLE

EXTERNAL

MANUAL

REFERENCE

DATA

MΩ

kΩ

Ω

SETUP/MEAS

R/%

1. Press the

SHIFT

key to switch to the SETUP mode. If the “MEAS & LOCK”

indicator is off, this operation is not necessary.

I/F

SHIFT

REF

[Main display]

LIMIT

8. 10.

REF

LIMIT

SETUP/MEAS

REF LIMIT

R/%

EXIT

LIMIT

MODE

546

RECALL

LOCAL

DATA

LIMIT

(Mode)

Ω

ENTER

TRIG

MODE

CHECK

MISCI/F

Ω

ENTER

Ω

ENTER

(Address)

9-6 IM 755601-01E

Explanation

9.4 Switching to the Addressable Mode

Switching to the addressable mode

Select “Adr” in the mode selection menu. Switch to the addressable mode if you wish to use the controller to set the information that you would normally use the panel keys to set or when outputting setup information or measured data to the controller.

Setting the address

Set the instrument’s address for the addressable mode in the following range: 0 to 30 Each device that is connected via GP-IB has its own unique address. This address is used for identification. Therefore, make sure to assign a unique address to the instrument when connecting to a PC.

Add or not add the header

Setting Header

HE. 0 No header HE. 1 Add header

Note

Do not change the address while the controller or other devices are using the GP-IB interface.

Using the GP-IB Interface

9-7IM 755601-01E

9.5 Switching to the Talk-only Mode

Keys

Procedure

MEAS& LOCK

SAMPLE

EXTERNAL

MANUAL

NORMAL

FAST

REFERENCE

HIGH SPEED

MΩ

kΩ

STORE DATA

RECALL

CHECK REMOTE

DATA

Ω

HI LIMIT

Ω

LO LIMIT

SHIFT

MEAS

TIME

STORE

DATA

SETUP/MEAS

REF LIMIT

R/%

EXIT

LOCAL

TRIG

MODE

CHECK

MISCI/F

Ω

ENTER

LIMIT

MODE

546

RECALL

DATA

Ω

Switching to the SETUP mode

1. Press the

SHIFT

SETUP/MEAS

R/%

key to switch to the SETUP mode. If the “MEAS & LOCK”

indicator is off, this operation is not necessary.

2. Set the device that is to receive the measured data to listen-only mode.

SHIFT

I/F

REF

[Main display]

LIMIT

Ω

ENTER

REF

LIMIT

(Mode)

Ω

ENTER

Explanation

Ω

REF

LIMIT

ENTER

(Add/not add the header)

10. Press the

SHIFT

SETUP/MEAS

key to switch to the measurement mode. The “MEAS &

R/%

LOCK” indicator turns ON. The measured data are output every time a measurement is made after the trigger occurrence. The output data format is the same as the response to a “

:READ?” query.

For details, see section 10.2.12, “Read Group.”

Talk-only mode

Select “onLY” in the mode selection menu. This mode is used to simply transmit data to other devices. It does not need to receive a talker designation in order to transmit data. It does not accept commands from the controller.

9-8 IM 755601-01E

Chapter 10 Communication Commands

10.1 Before Programming

The communication commands used by this instrument are based on the IEEE488.2 Standard. However, SCPI (Standard Commands for Programmable Instruments) is not supported.

10.1.1 Messages

Messages

Messages are used to exchange information between the controller and the instrument. Messages that are sent from the controller to the instrument are called program messages and messages that are sent back from the instrument to the controller are called response messages. If a program message contains a message unit that requests a response (a query), the instrument returns a response message upon receiving the program message. One response message is always returned for one program message.

Program Messages

The program message format is shown below.

;

A program message consists of zero or more program message units; each unit corresponds to one command. The instrument executes the received commands in order. Each program message unit is separated by a semicolon (;). For details regarding the format of the program message unit, see the next section.

Example

:CHECk:MODE BEFore;LEVel 5<PMT>

Unit Unit

<PMT>

PMT is a program message terminator. The following three types of terminators are available. NL (New Line): Same as LF (Line Feed). ASCII

code “0AH”

^END: The END message as defined in the

IEEE488.1. (The data byte that is sent with the END message will be the last data of the program message.)

NL^END: NL with an END message attached.

(NL is not included in the program message.)

Program message unit format

The program message unit format is shown below.

<Program data>Space

The program header indicates the command type. For details, see page 10-3.

If certain conditions are required in executing a command, program data are added. A space (ASCII code “20H”) separates the program data from the header. If there are multiple sets of program data, they are separated by commas (,). For details, see page 10-5.

:CHECk:MODE BEFore<PMT>

Header Data

Communication Commands

10-1IM 755601-01E

10.1 Before Programming

Response Messages

The response message format is shown below.

;

<RMT>

A response message consists of one or more response message units; each response message unit corresponds to one response. Response message units are separated by a semicolon (;). For details regarding the format of the response message unit, see the section “Response message unit format.”

:CHECK:MODE BEFORE;LEVEL 5<RMT>

Unit Unit

<RMT>

<RMT> is a response message terminator. It is NL^END.

Response message unit format

The response message unit format is shown below.

<Response data>Space

A response header sometimes precedes the response data. A space (ASCII code “20H”) separates the data from the header. For details, see page 10-4.

Response data contain the content of the response. If there are multiple sets of response data, they are separated by commas (,). For details, see page 10-5.

1.00824E+05<RMT> :CHECK:MODE BEFORE<RMT>

Precautions to be Taken When Transferring Messages

• If a program message that does not contain a query is sent, the next program message can be sent at any time.

• If a program message that does contain a query is sent, a response message must be received before the next program message can be sent. If the next program message is sent before the response message is received in its entirety, an error occurs. The response message that was not received is discarded.

• If the controller tries to receive a response message when there is none, an error occurs. If the controller tries to receive a response message before the transmission of the program message is complete, an error occurs.

• If a program message containing multiple message units is sent, and the message contains incomplete units, the instrument will attempt to execute the ones that are believed to be complete. However, these attempts may not always be successful. In addition, if the message contains queries, the responses may not be returned.

Deadlock

The instrument can store in its buffer program and response messages of length 1024 bytes or more (The number of available bytes varies depending on the operating conditions). When both the transmit and receive buffers become full at the same time, the instrument can no longer continue to operate. This state is called a deadlock. In this case, operation can be resumed by discarding the program message. Deadlock will not occur if the program message (including the <PMT>) is kept below 1024 bytes. Furthermore, deadlock never occurs if a program message does not contain a query.

HeaderData Data

If there are multiple queries in a program message, responses are made in the same order as the queries. In most cases, one query returns one response message unit, but there are a few queries that return multiple units. The first response message unit always corresponds to the first query, but the nth response unit may not necessarily correspond to the nth query. Therefore, if you want to make sure that every response is extracted, divide the program messages into individual messages.

10-2

IM 755601-01E

10.1 Before Programming

10.1.2 Commands

Commands

There are three types of commands (program headers) that are sent from the controller to the instrument. They differ in their program header formats.

Common Command Header

Commands that are defined in the IEEE 488.2-1992 are called common commands. The header format of a common command is shown below. An asterisk (*) is always placed in the beginning of a command.

<mnemonic> ?

An example of a common command

*CLS

Compound Header

Dedicated commands used by the instrument are classified and arranged in a hierarchy according to their functions. The format of a compound header is shown below. A colon (:) must be used to specify a lower hierarchy.

<mnemonic> ?:

An example of a compound header

:TRIGger:MODE

Simple Header

These commands are functionally independent and do not have a hierarchy. The format of a simple header is shown below.

<mnemonic> ?:

When Concatenating Commands

• Command Group

A command group is a group of commands that have the same compound header. A command group may contain sub-groups.

Example Group of commands related to the trigger

:TRIGger:DELay

:TRIGger:EDGE

:TRIGger:MODE

• When Concatenating Commands of the Same Group

The instrument stores the hierarchical level of the command that is currently being executed, and performs analysis on the assumption that the next command sent will also belong to the same level. Therefore, common header sections can be omitted for commands belonging to the same group.

Example

:TRIGger:MODE EXTernal;DELay0<PMT>

• When Concatenating Commands of Different Groups

If the following command does not belong to the same group, a colon (:) is placed in front of the header.

Example

:TRIGger:MODE EXTernal;:MTIMe NORMal<PMT>

• When Concatenating Common Commands

Common commands that are defined in the IEEE

488.2-1992 are independent of hierarchy. Colons (:) are not needed before a common command.

Communication Commands

An example of a simple header

:Measure

Note

A <mnemonic> is a character string made up of alphanumeric characters.

Example

:TRIGger:MODE EXTernal;*CLS;DELay 0<PMT>

• When Separating Commands with <PMT>

If a terminator is used to separate two commands, each command is a separate message. Therefore, the common header must be specified for each command even when commands belonging to the same command group are being concatenated.

Example

:TRIGger:MODE EXTernal<PMT>:TRIGger:

DELay 0<PMT>

10-3IM 755601-01E

10.1 Before Programming

Upper-level Query

An upper-level query is a query in which a question mark (?) is appended to the highest level command of a group. Execution of an upper-level query allows all settings that can be specified in the group to be received at once. Some query groups which are comprised of more than three hierarchical levels can output all the lower level settings.

Example

:LIMit?<PMT>→:LIMIT:MODE PCNT;PCNT:

REFERENCE 1.0000E+05;PLIMIT 9.99;

DATA 5.00,—5.00

The response to an upper-level query can be transmitted as a program message back to the instrument. In this way, the settings that existed when the upper-level query was made can be restored. However, some upper-level queries will not return setup information that is not currently in use. It is important to remember that not all the group’s information is necessarily returned as part of a response.

10.1.3 Responses

When the controller sends a message unit that has a question mark (?) in its program header (query), the instrument returns a response message to the query. A response message is returned in one of the following two forms.

• Response consisting of a header and data If the response can be used as a program message without any change, it is returned with a command header attached. Example

:CHECk:MODE?<PMT>→:CHECK:MODE BEFORE<RMT>

• Response consisting of data only If the response cannot be used as a program message unless changes are made to it (query-only command), only the data section is returned. However, there are query-only commands that return responses with the header attached. Example

:STATus ERRor?<PMT>→0,”NO ERROR”

Header Interpretation Rules

The instrument interprets the header that is received according to the following rules.

• Upper-case and lower-case letters of a mnemonic are treated the same. Example ”HEADer” can also be written as “header”

or “

Header.”

• The lower-case section of the header can be omitted. Example “HEADer” can also be writen as “HEADE” or

HEAD.”

“

• The question mark (?) at the end of a header indicates that it is a query. The question mark (?) cannot be omitted. Example The shortest abbreviation for “HEADer?” is

“

HEAD?.”

• If the <x> (value) at the end of a mnemonic is omitted, it is interpreted as a 1. Example If “

FILTer<x>” is written as “FILT,” it

means “

FILTer1.”

• The section enclosed by braces ([]) can be omitted. Example LIMit[:MODE] can be written as “LIM.”

However, the last section enclosed by braces ([])cannot be omitted in a upperlevel query.

Example “LIMit?” and “LIMit:MODE?” are different

queries.

When you wish to return a response without a header

Responses that return both header and data can be set so that only the data section is returned. Use the “

COMMunicate:HEADer” command for this task.

Abbreviated form

The response header is normally returned with the lower-case section removed. You can change this so that the response header is in the full form. Use the “COMMunicate:VERBose” command for this task. The sections enclosed by braces ([ ]) are also omitted in the abbreviated form.

10-4

IM 755601-01E

10.1 Before Programming

10.1.4 Data

Data

Data contain conditions and values that are written after the header. A space is used to separate the header and data. Data are classified as follows.

Data Description

<Decimal> Value expressed as a decimal number

(Example: The number of measured data to be stored

→:STORe:COUNt 1000)

<Resistance><Time> Physical value

(Example: Reference value→:LIMit:PCNT:REFerence

100KOHM)

<Register> Register value expressed as either binary, octal, decimal or

hexadecimal.

(Example: Extended event register value

→:STATUS:EESE #HFE)

<Character data> Predefined character string (mnemonic). Selectable from { }

(Example: Display format of the measured value

→:DISPlay[:MODE]{PCNT|OHM})

<Boolean> Indicates ON and OFF. Use “ON,” “OFF,” or a value.

(Example: Set to measurement mode→:MEASure ON)

<Block data> Arbitrary 8-bit data

(Example: Response of the stored measurement data

→#6000010ABCDEFGHIJ)

<Decimal> indicates a value expressed as a decimal number, as shown in the table below. Decimal values are given in the NR form as specified in the ANSI X3.42-1975.

<Resistance> and <Time> indicate decimal values that have physical dimensions. <Multiplier> or <Unit> can be attached to the <NRf> format that was described earlier. Enter these using any of the following forms.

Form Example

<NRf><Multiplier><Unit> 5KOHM

<NRf><Unit> 5E+3OHM

<NRf><Multiplier> 5K

<NRf> 5E+3

•<Multiplier>

<Multipliers> given in the following table can be used.

Symbol Prefix Multiplier

EX Exa 10

PE Peta 10

T Tera 10

GGiga10

MA Mega 10

K Kilo 10

M Milli 10

U Micro 10

N Nano 10

P Pico 10

F Femto 10

AAto10

—3

—6

—9

—12

—15

—18

• <Unit>

<Unit> given in the following table can be used.

Symbol Description Example

<NR1> Integer 125 —1 +1000

<NR2> Fixed point number 125.0 —.90 +001.

<NR3> Floating point number 125.0E+0 —9E—1 +.1E4

<NRf> Any of the forms <NR1> to <NR3> is allowed.

• The instrument can receive decimal values that are sent from the controller in any of the forms, <NR1> to <NR3>. This is represented by <NRf>

• For response messages that the instrument returns to the controller, a specific form is defined for each query. The same form is used regardless of the size of the value.

• For the <NR3> format, the “+” sign after the “E” can be omitted. However, the “–” sign cannot be omitted.

• If a value outside the setting range is entered, the value will be changed to the closest value inside the range.

• If a value has more significant digits than the available resolution, the value is rounded. In addition, for some commands, mnemonics such as MAX and MIN can be used as a value.

• For details regarding the resolution and the possible mnemonics that can be used, see the syntax of each command in section 10.2.

Symbol Word Description

OHM Ohm Ω (resistance)

SSecond Time

• <Multiplier> and <Unit> are not case sensitive.

• “U” is used to indicate the micro “µ.”

• “MA” is used for Mega to distinguish it from Milli.

• If both <Multiplier> and <Unit> are omitted, the default unit (Ω for resistance, s for time) is used.

• Response messages are returned using the default unit (Ω for resistance, s for time) without the <Multiplier> or <Unit>.

Communication Commands

10-5IM 755601-01E

10.1 Before Programming

<Register> indicates an integer that can be expressed not only in <Decimal> notation, but also <Hexadecimal>, <Octal>, or <Binary>. <Register> is used when each bit of the value has a particular meaning. It is expressed in one of the following forms.

Form Example

<NRf> 1 #H<Hexadecimal value made up of the digits 0 to 9 and A to F> #H0F #Q<Octal value made up of the digits 0 to 7> #Q777 #B<Binary value made up of the digits 0 and 1> #B001100

• <Register> is not case sensitive.

• Response messages are always returned in the <NR1> form.

<Character Data> are predefined character strings (mnemonic). They are mainly used to indicate options. One of the character strings given in brackets { } is chosen. The data interpretation is the same as the description given in “Header Interpretation Rules” on page 10-4.

<Block data> are data containing arbitrary 8-bit values. <Block data> are only used for response messages on the instrument. The form is as follows.

Form Example

#N<N-digit decimal value><Data byte string> #6000010ABCDEFGHIJ

•#N Indicates that the data are <Block data>. “N” is an ASCII character string number (digits) that indicates the number of bytes of data that follow.

• <N-digit decimal value> Indicates the number of bytes of data. (Example:

000010=10 bytes)

• <Data byte string> Indicates the actual data. (Example: ABCDEFGHIJ)

• Data are comprised of 8-bit values (0 to 255). Therefore, the ASCII code “0AH” which indicates “NL” can also be included in the data. Hence, care must be taken on the controller side in handling the data.

Form Example

{NORMal | FAST | HSPeed} NORMal

• As with the header, the “COMMunicate:VERBose” command can be used to select whether to return the response in the full form or in the abbreviated form.

• The “COMMunicate:HEADer” setting does not affect the <character data>.

<Boolean> are data that indicate ON or OFF. They are expressed in one of the following forms.

Form Example

{ON | OFF | <NRf>} ON OFF 1 0

When <Boolean> is expressed in the <NRf> form, “OFF” is selected if the rounded integer value is “0,” and ON for all other cases. A response message is always returned with a “1” if the value is ON and “0” if the value is OFF.

10-6

IM 755601-01E

10.1 Before Programming

10.1.5 Synchronization with the Controller

Sequential and Overlap Commands

There are two types of commands: sequential and overlap commands. For sequential commands, the execution of the following command does not start until the execution of the current command is completed. For overlap commands, however, the execution of the following command may start before the execution of the current command is completed. Of the commands that are provided by the instrument, the following command is the only overlap command. All other commands are sequential commands.

:PRINt:EXECute

Synchronization with Overlap Commands

:PRINt:EXECute” is a command that is used to print

“ data to an external printer via the Centronics interface. Since printing can take some time depending on the performance of the external printer or the amount of data that is being printed, it is necessary that a command that aborts the operation, “ be executable during the print operation. For example, if the following program is executed, the instrument will attempt to execute the “ command before the output to the external printer is completed, and, therefore, an execution error occurs.

CMD$ = "PRIN:EXEC"' Output to an external printer CALL IBWRT(M7556%, CMD$) CMD$ = "MEAS ON"' Switch to the measurement

mode

CALL IBWRT(M7556%, CMD$)

In order to keep the following command from executing until the execution of the previously sent overlap command is completed, the following commands are used.

*WAI

:COMMunicate:OVERlap

*OPC

*OPC?

The use of each command is described in the next section.

:PRINt:ABORt,”

:MEAS ON”

Using the *WAI command

: CMD$ =

"COMM:OPSE #H2000"' ............(1)

CALL IBWRT(M7556%, CMD$) CMD$ =

"PRIN:EXEC;*WAI"' ............(2)

CALL IBWRT(M7556%, CMD$)

CMD$ = "MEAS ON"' ............(3)

CALL IBWRT(M7556%, CMD$) :

(1) Make the completion of the external printer

operation subject to the *WAI command.

(2) Output to the external printer and wait for the

operation to complete.

(3) Switch to the measurement mode.

Using the :COMMunicate:OVERlap command

: CMD$ =

"COMM:OVER 0"' ............(1)

CALL IBWRT(M7556%, CMD$) CMD$ =

"PRIN:EXEC"' ............(2)

CALL IBWRT(M7556%, CMD$)

CMD$ = "MEAS ON"' ............(3)

CALL IBWRT(M7556%, CMD$) :

(1) Prohibit the overlap operation of the external

printer operation.

(2) Output to the external printer (sequential

operation)

(3) Switch to the measurement mode.

Using the *OPC command

: CMD$ =

"COMM:OPSE #H2000"' ............(1)

CALL IBWRT(M7556%, CMD$) CMD$ =

"*ESE 1;*ESR?"' ............(2)

CALL IBWRT(M7556%, CMD$)

A$ = SPACE$(8) ' ............(3)

CALL IBRD(M7556%, A$)

CMD$ = "*SRE 32"' ............(4)

CALL IBWRT(M7556%, CMD$) CMD$ =

"PRIN:EXEC;*OPC"' ............(5)

CALL IBWRT(M7556%, CMD$)

'(Wait for a service request)

CMD$ =

"MEAS ON"' ............(6)

CALL IBWRT(M7556%, CMD$) :

(1) Make the completion of the external printer

operation subject to the *OPC command.

(2) Reflect the OPC bit of the standard event

(3) Read the response to the

*ESR? query (clear

the standard event register).

(4) Reflect the ESB bit of the status byte register to

the generation of the service request.

(5) Output to the external printer and wait for the

OPC bit to be set.

(6) Switch to the measurement mode.

Communication Commands

10-7IM 755601-01E

10.1 Before Programming

Using the *OPC? query

: CMD$ =

"COMM:OPSE #H2000"' ............(1)

CALL IBWRT(M7556%, CMD$)

CMD$ = "PRIN:EXEC;*OPC?"' ............(2)

CALL IBWRT(M7556%, CMD$) A$ = SPACE$(8)

' ............(3)

CALL IBRD(M7556%, A$)

CMD$ = "MEAS ON"' ............(4)

CALL IBWRT(M7556%, CMD$) : (1) Make the completion of the external printer

operation subject to the

*OPC query.

(2) Output to the external printer and wait for the

operation to complete.

(3) Read the response to the

*OPC? query.

(4) Switch to the measurement mode.

Synchronization with Non-Overlap Commands

Even for sequential commands, synchronization is sometimes required for non communication-related reasons such as a trigger occurrence. For example, if the

*TRG command is used to generate

a trigger from the controller and then store the measured data, there is no need to synchronize with the controller. However, if measured data are to be stored using the external trigger mode, the controller cannot determine when the data store operation is completed. Therefore, synchronization with the controller is required in order to wait for the store operation to complete.

To synchronize with the controller according to the current internal condition of the instrument (“Measurement data store complete,” for example), the following commands that support the extended event register are used.

:STATus:CONDition?

:STATus:FILTer<x>

:STATus:EESE

:STATus:EESR?

:COMMunicate:WAIT

:COMMunicate:WAIT?

The use of each command is explained in the following example in which the measured data are stored or recalled using the external trigger mode.

Using the external event register

: CMD$ =

"STOR:COUN 200"' ............(1)

CALL IBWRT(M7556%, CMD$) CMD$ =

"STOR ON"' ............(2)

CALL IBWRT(M7556%, CMD$)

CMD$ = "STAT:FILT10 FALL"' ............(3)

CALL IBWRT(M7556%, CMD$)

CMD$ = "STAT:EESE 512"' ............(4)

CALL IBWRT(M7556%, CMD$)

CMD$ = "STAT:EESR?"' ............(5)

CALL IBWRT(M7556%, CMD$) N$ = SPACE$(8) CALL IBRD(M7556%, N$) CMD$ =

"*SRE 8"' ............(6)

CALL IBWRT(M7556%, CMD$)

ON PEN GOSUB STEND ' ............(7)

PEN ON

' ............(8)

CMD$ = "TRIG:MODE EXT"' ............(9)

CALL IBWRT(M7556%, CMD$) CMD$ =

"MEAS ON"' ............(10)

CALL IBWRT(M7556%, CMD$)

LOOP1: ' ............(11)

GOTO LOOP1

STEND: CMD$ =

"MEAS OFF"' ............(12)

CALL IBWRT(M7556%, CMD$)

CMD$ = "REC:DATA?"' ............(13)

CALL IBWRT(M7556%, CMD$) : (1) Store 200 sets measured data. (2) Enter the store start ready state. (3) Set the external event register on the falling

edge of bit 9 (STR) of the status register.

(4) Reflect only bit 9 (STR) of the extended event

(5) Read the extended event register in order to

clear the register.

(6) Reflect the EES bit of the status byte register to

the generation of the service request.

(7) Specify the destination to jump to when an

interrupt occurs. (8) Enable the SRQ interrupt. (9) Set the trigger mode to external trigger. (10) Switch to the measurement mode. (11) Wait for the data store operation to complete. (12) Exit from the measurement mode. (13) Query all the measured data that have been

stored.

10-8

IM 755601-01E

10.1 Before Programming

Using the :COMMunicate:WAIT command

: CMD$ =

"STOR:COUN 200"' ............(1)

CALL IBWRT(M7556%, CMD$)

CMD$ = "STOR ON"' ............(2)

CALL IBWRT(M7556%, CMD$)

CMD$ = "STAT:FILT10 FALL"' ............(3)

CALL IBWRT(M7556%, CMD$) CMD$ =

"STAT:EESR?"' ............(4)

CALL IBWRT(M7556%, CMD$) N$ = SPACE$(8) CALL IBRD(M7556%, N$)

CMD$ = "TRIG:MODE EXT"' ............(5)

CALL IBWRT(M7556%, CMD$)

CMD$ = "MEAS ON"' ............(6)

CALL IBWRT(M7556%, CMD$) CMD$ =

"COMM:WAIT #H0200"' ............(7)

CALL IBWRT(M7556%, CMD$)

CMD$ = "MEAS OFF"' ............(8)

CALL IBWRT(M7556%, CMD$)

CMD$ = "REC:DATA?"' ............(9)

CALL IBWRT(M7556%, CMD$) : (1) Store 200 points of measured data. (2) Enter the store start ready state. (3) Set the external event register on the falling

edge of bit 9 (STR) of the status register.

(4) Read the extended event register in order to

clear the register. (5) Set the trigger mode to external trigger. (6) Switch to the measurement mode. (7) Wait for bit 9 (STR) of the extended event

stored.

10.1.6 Programming of Various Functions

This section describes the commands that are used for each function and presents examples showing their use. Use this section as a reference when you are actually programming. The program examples are written in Microsoft QuickBASIC with AT-GPIB/TNT IEEE488.2 board from National Instruments.

Resetting the Instrument

Use one of the following commands.

:PANel:INITialize

*RST

Example CMD$ = "*RST"

CALL IBWRT(M7556%, CMD$)

Switching between the SETUP and measurement modes

Use the following command.

:MEASure

Example 1

Switch to the SETUP mode to change the instrument’s settings when making measurements in the measurement mode. CMD$ = "MEAS OFF" CALL IBWRT(M7556%, CMD$)

Example 2

Start measurements in the measurement mode after the settings have been changed. CMD$ = "MEAS ON" CALL IBWRT(M7556%, CMD$)

Selecting the limit mode of the comparator function

Use the following command.

:LIMit[:MODE]

Communication Commands

Example 1

Set the limit mode to deviation (%). CMD$ =

"LIM PCNT"

CALL IBWRT(M7556%, CMD$)

Example 2

Set the limit mode to absolute (R). CMD$ =

"LIM OHM"

CALL IBWRT(M7556%, CMD$)

Note

• Changing the limit mode clears the preexisting reference value and limit values.

• Select the limit mode before setting the reference value and limit values.

10-9IM 755601-01E

10.1 Before Programming

Setting and checking the reference value and limit values

When the limit mode is set to deviation (%) Use the following command.

:LIMit:PCNT:REFerence Set the reference value. :LIMit:PCNT:PLIMit Set the input range

(resolution) of the limit values.

:LIMit:PCNT[:DATA] Set the limit values. :LIMit:PCNT? Checking the current

comparator settings.

Example 1

Set the reference value to 1kΩ, HI limit value to 5%, and LO limit value to –5%. CMD$ =

"LIM:PCNT:REF 1KOHM"

CALL IBWRT(M7556%, CMD$) CMD$ =

"LIM:PCNT:PLIM 9.99"

CALL IBWRT(M7556%, CMD$) CMD$ =

"LIM:PCNT 5,-5"

CALL IBWRT(M7556%, CMD$)

Example 2

CMD$ =

"LIM:PCNT?"

CALL IBWRT(M7556%, CMD$) A$ = SPACE$(100) CALL IBRD(M7556%, A$)

PRINT A$

Note

Changing the percent limit initializes the limit values. Set the percent limit before setting the limit values as shown in Example 1 above.

When the limit mode is set to absolute (R) Use the following command.

:LIMit:OHM[:DATA] Set the limit values. :LIMit:OHM? Check the current comparator

settings.

Example 1

Set the HI limit value to 1.05 Ω, LO limit value to

0.95 Ω. CMD$ = "LIM:OHM 1.05,0.95" CALL IBWRT(M7556%, CMD$)

Example 2

Check the current comparator settings. CMD$ = CALL IBWRT(M7556%, CMD$) A$ = SPACE$(50) CALL IBRD(M7556%, A$)

PRINT A$

"LIM:OHM?"

Setting the contact check

Use the following command.

:CHECk[:MODE]

:CHECk:LEVel

Example

Set the check level to 5 Ω and perform the contact check before the measurement. CMD$ =

"CHEC:LEV 5"

CALL IBWRT(M7556%, CMD$) CMD$ =

"CHEC BEF"

CALL IBWRT(M7556%, CMD$)

Switching the displayed unit of the measured values

Use the following command.

:DISPlay[:MODE]

Example

Set the displayed unit of the measured values to absolute notation (R). CMD$ =

"DISP OHM"

CALL IBWRT(M7556%, CMD$)

Setting the measurement time

Use the following command.

:MTIMe

Example

Set the measurement time to Fast. CMD$ = "MTIM FAST"

CALL IBWRT(M7556%, CMD$)

Setting the pulse width of the EOM signal

Use the following command.

:HANDler:EOM

Example

Set the pulse width of the EOM signal to 10 ms. CMD$ = "HAND:EOM 1E-2"

CALL IBWRT(M7556%, CMD$)

Setting the trigger delay

Use the following command.

:TRIGger:DELay

Example

Set the trigger delay to 5 ms. CMD$ =

"TRIG:DEL 5E-3"

CALL IBWRT(M7556%, CMD$)

Setting the trigger edge

Use the following command to set the trigger edge.

:TRIGger:EDGE

10-10

Example

Set the trigger edge to the rising edge. CMD$ = "TRIG:EDGE RISE"

CALL IBWRT(M7556%, CMD$)

IM 755601-01E

10.1 Before Programming

Setting the trigger

To trigger the measurement from the external controller or by using the trigger function on the instrument, use the following commands.

:TRIGger:MODE :MEASure *TRG

Group Execution Trigger (GET)

:READ?

Example 1

Set the trigger mode to external trigger and trigger the measurement

: CMD$ =

"STAT:FILT1 RISE"' ............(1)

CALL IBWRT(M7556%, CMD$) CMD$ =

"STAT:EESE 1"' ............(2)

CALL IBWRT(M7556%, CMD$) CMD$ =

"STAT:EESR?"' ............(3)

CALL IBWRT(M7556%, CMD$) N$ = SPACE$(8) CALL IBRD(M7556%, N$)

CMD$ = "*SRE 8"' ............(4)

CALL IBWRT(M7556%, CMD$)

ON PEN GOSUB AVAIL ' ............(5)

PEN ON

' ............(6)

CMD$ = "TRIG:MODE EXT"' ............(7)

CALL IBWRT(M7556%, CMD$) CMD$ =

"MEAS ON"' ............(8)

CALL IBWRT(M7556%, CMD$) LOOP1:

' ............(9)

GOTO LOOP1

AVAIL: CMD$ =

"READ?"' ............(10)

CALL IBWRT(M7556%, CMD$) D$ = SPACE$(20) CALL IBRD(M7556%, D$) PRINT D$ CALL IBRSP(M7556%, SPR%) CMD$ =

"STAT:EESR?"' ............(12)

' ............(11)

CALL IBWRT(M7556%, CMD$) CALL IBRD(M7556%, N$) PEN ON

' ............(13)

RETURN : (1) Set the extended event register on the rising

edge of bit 0 (DAV) of the status register.

(2) Reflect only bit 0 (DAV) of the extended event

(3) Read the extended event register in order to

clear the register.

(4) Reflect the EES bit of the status byte register to

the generation of the service request.

(5) Specify the destination to jump to when an

interrupt occurs. (6) Enable the SRQ interrupt. (7) Set the trigger mode to external trigger. (8) Switch to the measurement mode. (9) Wait for the external trigger signal.

(10) Query the measured data.

(11) Clear the SRQ line. (12) Read the extended event register in order to

clear the register.

(13) Enable the SRQ interrupt once again.

Example 2

Set the trigger to manual trigger and trigger the measurement

: CMD$ =

"STAT:FILT1 RISE"' ............(1)

CALL IBWRT(M7556%, CMD$) CMD$ =

"STAT:EESE 1"' ............(2)

CALL IBWRT(M7556%, CMD$) CMD$ =

"STAT:EESR?"' ............(3)

CALL IBWRT(M7556%, CMD$) N$ = SPACE$(8) CALL IBRD(M7556%, N$) CMD$ =

"*SRE 8"' ............(4)

CALL IBWRT(M7556%, CMD$)

ON PEN GOSUB AVAIL ' ............(5)

PEN ON ' ............(6)

CMD$ = "TRIG:MODE MAN"' ............(7)

CALL IBWRT(M7556%, CMD$) CMD$ =

"MEAS ON"' ............(8)

CALL IBWRT(M7556%, CMD$) LOOP1:

' ............(9)

V% = 0 CALL IBSRE(BD%, V%) GOTO LOOP1

AVAIL: CMD$ =

"READ?"' ............(10)

CALL IBWRT(M7556%, CMD$) D$ = SPACE$(20) CALL IBRD(M7556%, D$) PRINT D$ CALL IBRSP(M7556%, SPR%) CMD$ =

"STAT:EESR?"' ............(12)

' ............(11)

CALL IBWRT(M7556%, CMD$) CALL IBRD(M7556%, N$) PEN ON

' ............(13)

RETURN :

(1) Set the extended event register on the rising

edge of bit 0 (DAV) of the status register.

(2) Reflect only bit 0 (DAV) of the extended event

(3) Read the extended event register in order to

clear the register.

(4) Reflect the EES bit of the status byte register to

the generation of the service request.

(5) Specify the destination to jump to when an

interrupt occurs. (6) Enable the SRQ interrupt. (7) Set the trigger mode to manual. (8) Switch to the measurement mode. (9) Wait for the [TRIG] key to be pressed. (10) Query the measured data. (11) Clear the SRQ line. (12) Read the extended event register in order to

clear the register. (13) Enable the SRQ interrupt once again.

Communication Commands

10-11IM 755601-01E

10.1 Before Programming

Example 3

Set the trigger mode to internal trigger and trigger the measurement :

CMD$ =

"TRIG:MODE INT"' ............(1)

CALL IBWRT(M7556%, CMD$)

CMD$ = "MEAS ON"' ............(2)

CALL IBWRT(M7556%, CMD$) LOOP1: CMD$ =

"READ?"' ............(3)

CALL IBWRT(M7556%, CMD$) D$ = SPACE$(20) CALL IBRD(M7556%, D$) PRINT D$

GOTO LOOP1 : (1) Set the trigger mode to internal trigger. (2) Switch to the measurement mode. (3) Query the measured data.

Example 4

Use the common command *TRG :

CMD$ = "TRIG:MODE MAN"' ............(1)

CALL IBWRT(M7556%, CMD$)

CMD$ = "MEAS ON"' ............(2)

CALL IBWRT(M7556%, CMD$) LOOP1: CMD$ =

"*TRG"' ............(3)

CALL IBWRT(M7556%, CMD$) CMD$ =

"READ?"' ............(4)

CALL IBWRT(M7556%, CMD$) D$ = SPACE$(20) CALL IBRD(M7556%, D$) PRINT D$

GOTO LOOP1 : (1) Set the trigger mode to manual. (2) Switch to the measurement mode. (3) Generate the trigger. (4) Query the measured data.

Output Example

1.00083E+02

1.00082E+02

1.00083E+02

1.00081E+02

1.00083E+02

1.00082E+02

1.00083E+02

1.00081E+02

1.00083E+02

•

Note

QuickBASIC may be interrupted when a GPIB SRQ signal occurs, and possibly go to a user-specified service routine. To intercept SRQ signal interruptions and to make them available to user programs, the NI-488.2 for MS-DOS drivers uses the QuickBASIC “ON PEN” statement.

10-12

IM 755601-01E

10.2 Commands

10.2.1 A List of Commands

Command Function Page CHECk Group

:CHECk? Queries all settings related to the contact check function. 10-15 :CHECk:LEVel Sets the contact check level or queries the current setting. 10-15 :CHECk[:MODE] Turns ON/OFF the contact check function and sets the check timing or queries the current setting. 10-15

COMMunicate Group

:COMMunicate? Queries all settings related to communications. 10-16 :COMMunicate:HEADer Sets whether or not (ON/OFF) to attach a header to the response data or queries the current setting. 10-16 :COMMunicate:LOCKout Sets local lockout or queries the current setting. (dedicated command for RS-232) 10-16 :COMMunicate:OPSE Sets the overlap commands that are subject to *OPC, *OPC?, and *WAI or queries the current setting. 10-17 :COMMunicate:OPSR? Queries the operation pending status register value. 10-17 :COMMunicate:OVERlap Sets the commands that will operate as overlap commands or queries the current setting. 10-17 :COMMunicate:REMote Switches to remote/local mode or queries the current setting. (dedicated command for RS-232) 10-17 :COMMunicate:STATus? Queries the line status. 10-17 :COMMunicate:VERBose Sets the response messages to full form or abbreviated form or queries the current setting. 10-17 :COMMunicate:WAIT Waits for a specified extended event. 10-17 :COMMunicate:WAIT? Creates the response that is returned when the specified event occurs. 10-18

DISPlay Group

:DISPlay? Queries all settings related to the measurement display. 10-18 :DISPlay[:MODE] Sets the displayed unit (deviation (%) or absolute (R)) of the measured value or queries the current setting. 10-18

HANDler Group

:HANDler? Queries all settings related to the handler interface. 10-18 :HANDler:EOM Sets the pulse width of the EOM signal or queries the current setting. 10-18

HEADer Group

:HEADer Sets whether or not to attach a header (measurement information) to measured data or queries the 10-19

current setting.

LIMit Group

:LIMit? Queries all settings related to the limit mode and limit values. 10-20 :LIMit[:MODE] Sets the limit mode (deviation (%)/absolute (R)) or queries the current setting. 10-20 :LIMit:OHM? Queries all settings when the limit mode is set to absolute mode (R). 10-20 :LIMit:OHM[:DATA] Sets the limit values (absolute value (R)) or queries the current setting. 10-20 :LIMit:PCNT? Queries all settings when the limit mode is set to deviation mode (%). 10-21 :LIMit:PCNT[:DATA] Sets the limit values (deviation (%)) or queries the current setting. 10-21 :LIMit:PCNT:PLIMit Sets the percent limit or queries the current setting. (only when the limit mode is set to %) 10-21 :LIMit:PCNT:REFerence Sets the reference value or queries the current setting. (only when the limit mode is set to %) 10-21

MEASure Group

:MEASure Starts or stops the measurement (measurement/SETUP modes) or queries the current setting. 10-22

MTIMe Group

:MTIMe Sets the type of measurement time or queries the current setting. 10-23

PANel Group

:PANel:INITialize Initializes settings. 10-23

PRINt Group

:PRINt? Queries all settings related to the printer output. 10-24 :PRINt:ABORt Aborts printing. 10-24 :PRINt:EXECute Starts printing. 10-24 :PRINt:FORMat Sets the contents to be printed (sets whether or not to print measured data) or queries the current setting. 10-24 :PRINt:STATe? Queries the printer output condition. 10-24

Communication Commands

10-13IM 755601-01E

10.2 Commands

Command Function Page READ Group

:READ? Queries the measured data. 10-25

RECall Group

:RECall? Queries all settings related to the recalling of the measure data. 10-26 :RECall:DATA[:ASCii]? Queries the measured data that are stored (ASCII format). 10-26 :RECall:DATA:BINary? Queries the measured data that are stored (binary format). 10-27 :RECall:RESult? Queries the statistics related to the stored measured data. 10-27 :RECall[:STATe] Sets the measured data recall state (ON/OFF) or queries the current setting. 10-28

SELFtest Group

:SELFtest:KEY Executes the panel key test. 10-28 :SELFtest:LED Executes the LED test. 10-28 :SELFtest:HANDler Executes the handler interface output test. 10-28

STATus Group

:STATus? Queries all settings related to the communication status. 10-29 :STATus:CONDition? Queries the status register. 10-29 :STATus:EESE Sets the extended event enable register or queries the current setting. 10-29 :STATus:EESR? Queries the extended event register and clears the register. 10-29 :STATus:ERRor? Queries the error code and message information (beginning of the error queue). 10-30 :STATus:FILTer<x> Sets the transition filter or queries the current setting. 10-30 :STATus:QENable Sets whether or not to store messages other than errors in the error queue or queries the current setting. 10-30 :STATus:QMESsage Sets whether or not to attach message information to the response to the “:STATus:ERRor?” query or 10-30

queries the current setting.

:STATus:SPOLl? Executes serial polling (dedicated command for RS-232). 10-30

STORe Group

:STORe? Queries all settings related to the storing of the measured data. 10-30 :STORe:COUNt Sets the number of data points to store or queries the current setting. 10-30 :STORe:POINts? Queries the number of data points that are stored. 10-31 :STORe[:STATe] Sets the measured data store state (ON/OFF) or queries the current setting. 10-31

TRIGger Group

:TRIGger? Queries all settings related to the trigger. 10-32 :TRIGger:DELay Sets the trigger delay or queries the current setting. 10-32 :TRIGger:EDGE Sets the trigger edge or queries the current setting. 10-32 :TRIGger:MODE Sets the trigger mode or queries the current setting. 10-32

Common Command Group

*CLS Clears the standard event register, extended event register, and error queue. 10-33 *ESE Sets the standard event enable register or queries the current setting. 10-33 *ESR? Queries the standard event register and clears the register. 10-34 *IDN? Queries the instrument model. 10-34 *LRN? Queries current group settings. 10-34 *OPC Sets an OPC event upon the completion of the specified overlap command. 10-34 *OPC? Creates a response upon the completion of the specified overlap command. 10-34 *OPT? Queries the installed options. 10-34 *PSC Sets whether or not to clear the registers at power up or queries the current setting. 10-34 *RST Initializes the settings. 10-34 *SRE Sets the service request enable register or queries the current setting. 10-35 *STB? Queries the status byte register. 10-35 *TRG Executes a manual trigger. 10-35 *TST? Performs a self-test and queries the result. 10-35 *WAI Holds the subsequent command until the completion of the specified overlap operation. 10-35

10-14 IM 755601-01E

10.2 Commands

10.2.2 CHECk(contact CHECk) Group

The commands in the CHECk(contact CHECk) Group deal with the contact check function. These commands can be used to make the same settings and inquiries as when the CHECK key on the front panel is pressed.

;

:CHECk : MODE <Space> OFF

BEFore

AFT

LEVel <Space>

:CHECk?

Function Queries all settings related to the contact check

function. Syntax :CHECk? Example When contact check is OFF

:CHECK?→:CHECK:MODE OFF

When contact check is ON (BEFore)

:CHECK?→:CHECK:MODE BEFORE;LEVEL 5

MAX

MIN

:CHECk:LEVel

Function Sets the contact check level or queries the

current setting. Syntax :CHECk:LEVel {<Resistance>|MAX|MIN}

:CHECk:LEVel?

<Resistance> = 1 to 30 Ω (Resolution 1 Ω)

MAX = 30 Ω

MIN = 1 Ω

Response <NR1> form Example :CHECK:LEVEL 5OHM

:CHECK:LEVEL?→:CHECK:LEVEL 5

:CHECk[:MODE]

Function Turns ON/OFF the contact check function and

sets the check timing or queries the current

setting. Syntax :CHECk[:MODE] {OFF|BEFore|AFTer}

:CHECk:MODE?

OFF = Contact check: OFF

BEFore = Contact check: ON, check before

measurement

AFTer = Contact check: ON, check after

measurement

Response {OFF|BEFore|AFTer} Example :CHECK:MODE OFF

:CHECK:MODE?→:CHECK:MODE OFF

Communication Commands

10-15IM 755601-01E

10.2 Commands

10.2.3 COMMunicate Group

The commands in the COMMunicate Group deal with communications. There are no front-panel keys that correspond to the commands in this group.

;

:COMMunicate : HEADer <Space> OFF

<NRf>

LOCKout <Space> OFF

<NRf>

OPSE <Space> <Register>

OPSR ?

OVERlap <Space> <Register>

REMote <Space> OFF

<NRf>

STATus ?

VERBose <Space> OFF

<NRf>

WAIT ? <Space> <Register>

:COMMunicate?

Function Queries all settings related to communications. Syntax :COMMunicate? Example :COMMUNICATE?→:COMMUNICATE:HEADER 1;

OPSE 8192;OVERLAP 8192;VERBOSE 1

:COMMunicate:HEADer

Function Sets whether or not (ON/OFF) to attach a

header to the response data or queries the current setting.

Syntax :COMMunicate:HEADer {<Boolean>}

:COMMunicate:HEADer?

Response {0|1} Example :COMMUNICATE:HEADER ON

:COMMUNICATE:HEADER?→:COMMUNICATE:HEADER 1

Description For example, the response data to the

“:LIMIT:PCNT:REFERENCE?” query is “:LIMIT:PCNT:REFERENCE 1.0E+05” if the header is attached, and “1.0E+05” if it is not.

:COMMunicate:LOCKout

Function Sets or clears local lockout. Syntax :COMMunicate:LOCKout {<Boolean>}

:COMMunicate:LOCKout?

Response {0|1} Example :COMMUNICATE:LOCKOUT ON

:COMMUNICATE:LOCKOUT?

→:COMMUNICATE:LOCKOUT 1

Description This is a dedicated command of the serial (RS-

232) interface.

10-16 IM 755601-01E

10.2 Commands

:COMMunicate:OPSE (Operation Pending Status Enable register)

Function Sets the overlap commands that are subject to

*OPC, *OPC?, and *WAI or queries the current

setting. Syntax :COMMunicate:OPSE <Register>

:COMMunicate:OPSE?

<Register> = 0 to 65535 (Operation

pending status enable register, see

the description of the :COMMunicate:

OVERlap command)

Response <NR1> Example :COMMUNICATE:OPSE 65535

:COMMUNICATE:OPSE?→:COMMUNICATE:OPSE

8192

Description In the above example, all bits are set to “1” so

that all overlap commands are subject to *OPC,

*OPC?, and *WAI. However, because the bits

that are fixed to “0” cannot be changed, only bit

13 shows a “1” when a query is made.

:COMMunicate:OPSR? (Operation Pending Status Register)

Function Queries the operation pending status register

value. Syntax :COMMunicate:OPSR? Response <NR1> (Operation pending status enable

:COMMunicate:OVERlap command)

Example :COMMUNICATE:OPSR?→0

:COMMunicate:OVERlap

Function Sets the commands that will operate as overlap

commands or queries the current setting. Syntax :COMMunicate:OVERlap <Register>

:COMMunicate:OVERlap?

<Register> = 0 to 65535 (Overlap enable

Response <NR1> Example :COMMUNICATE:OVERLAP 65535

:COMMUNICATE:OVERLAP?

→:COMMUNICATE:OVERLAP 8192

Description • In the above example, all bits are set to “1”

so that all overlap commands are enabled. However, because the bits that are fixed to “0” cannot be changed, only bit 13 shows a “1” when a query is made.

• For the procedures regarding the use of the “:COMMunicate:OVERlap” command for synchronization, see page 10-7.

• Operation pending status (enable) register/ overlap enable register

15 14 13 12 11 10 9 87654 3210

00PRN 0000000 000000

When bit 13 (PRN)=1: External printer output operation incomplete

:COMMunicate:REMote

Function Switches to remote/local mode or queries the

current setting. When the setting is set to ON, it is set to the remote mode.

Syntax :COMMunicate:REMote {<Boolean>}

:COMMunicate:REMote?

Response {0|1} Example :COMMUNICATE:REMOTE ON

:COMMUNICATE:REMOTE?→:COMMUNICATE:REMOTE 1

Description This is a dedicated command of the serial (RS-

232) interface.

:COMMunicate:STATus?

Function Queries the line status. Syntax :COMMunicate:STATus? Response <NR1> Example :COMMUNICATE:STATUS?→0 Description • The descriptions of the status bits are as

follows. Bit RS-232 GP-IB 0 Parity error Unrecoverable

transmission error 1 Framing error Always 0 2 Break character Always 0

detected

Others Always 0 Always 0

• When a causing event occurs, the corresponding status bit is set. When the status is read, it is cleared.

:COMMunicate:VERBose

Function Sets the response messages to full form or

abbreviated form or queries the current setting.

Syntax :COMMunicate:VERBose {<Boolean>}

:COMMunicate:VERBose?

Response {0|1} Example :COMMUNICATE:VERBOSE ON

:COMMUNICATE:VERBOSE?

→:COMMUNICATE:VERBOSE 1

Description For example, the response data to the

“:TRIGGER:MODE?” query is “:TRIGGER:MODE

EXTERNAL

” when it is returned in the full form and “:TRIG EXT” when it is returned in the abbreviated form.

:COMMunicate:WAIT

Function Waits for a specified extended event. Syntax :COMMunicate:WAIT <Register>

<Register> = 0 to 65535 (Extended event

Example :COMMUNICATE:WAIT 65535 Description For the procedures regarding the use of the

“:COMMunicate:WAIT” command for synchronization, see page 10-9.

Communication Commands

10-17IM 755601-01E

10.2 Commands

:COMMunicate:WAIT?

Function Creates the response that is returned when the

specified event occurs.

Syntax :COMMunicate:WAIT? <Register>

<Register> = 0 to 65535 (Extended event

Response 1 (Fixed) Example :COMMUNICATE:WAIT? 65535→1

10.2.4 DISPlay Group

The commands in the DISPlay Group deal with the measurement display.These commands can be used to make the same settings and inquiries as when the R/% key on the front panel is pressed.

:DISPlay : MODE <Space> PCNT

OHM

:DISPlay?

Function Queries all settings related to the measurement

display. Syntax :DISPlay? Example :DISPLAY?→:DISPLAY:MODE PCNT

:DISPlay[:MODE]

Function Sets the displayed unit (deviation (%) or

absolute (R)) of the measured value or queries the current setting.

Syntax :DISPlay[:MODE] {PCNT|OHM}

:DISPlay:MODE?

PCNT = Deviation (%) display

OHM = Absolute (R) display

Response {PCNT|OHM} Example :DISPLAY:MODE PCNT

:DISPLAY:MODE?→:DISPLAY:MODE PCNT

Description When the “:LIMit[:MODE]” is set to OHM, this

command cannot be used to specify PCNT. Doing so will result in an error (814).

10.2.5 HANDler Group

The commands in the HANDler Group deal with the handler interface. These commands can be used to make the same settings and inquiries as the “Eom” menu accessible through the MISC key on the front panel.

:HANDler : EOM <Space>

<Time>

MAX

MIN

:HANDler?

Function Queries all settings related to the handler

interface output. Syntax :HANDler? Example :HANDLER?→:HANDLER:EOM 0.0100

:HANDler:EOM

Function Sets the pulse width of the EOM signal or

queries the current setting.

Syntax :HANDler:EOM {<Time>|MAX|MIN}

:HANDler:EOM? <Time> = 0.1, 5, 10, 15(ms) MAX = 15ms MIN = 0.1ms

Response {0.0001|0.0050|0.0100|0.0150} (<NR2>

form)

Example :HANDLER:EOM 10MS

:HANDLER?Æ:HANDLER:EOM 0.0100

10-18 IM 755601-01E

10.2 Commands

10.2.6 HEADer Group

The commands in the HEADer Group deal with the measurement information when querying the measured data. These commands can be used to make the same settings and inquiries as the “HE. ” menu accessible through the I/F key on the front panel.

:HEADer <Space> OFF

<NRf>

:HEADer

Function Sets whether or not to attach a header

(measurement information) to the measured data or queries the current setting.

Syntax :HEADer {<Boolean>}

:HEADer?

Response {1|0} Example :HEADER ON

:HEADER?→:HEADER 1

Description • The “:HEADer” setting is reflected in the

following responses and output content.

:READ?

:RECall:DATA[:ASCii]?

:RECall:DATA:BINary?

Measured data output in the talk-only mode

• When the header is attached, the comparator result, error information, and unit (%, Ω) are also output. This command is different from the “:COMMunicate:HEADer” command.

Communication Commands

10-19IM 755601-01E

10.2 Commands

10.2.7 LIMit Group

The commands in the LIMit Group deal with the limit mode and limit values. These commands can be used to make the same settings and inquiries as the “PLmt” menu accessible through the LIMIT MODE, REF, LIMIT, and MISC key on the front panel.

;

:LIMit : MODE <Space> PCNT

OHM

;

PCNT : REFerence <Space>

PLIMit <Space> <NRf>

DATA <Space> <NRf> , <NRf>

OHM : DATA <Space> ,

:LIMit?

Function Queries all settings related to the limit mode

and limit values. Syntax :LIMit? Example • When the limit mode is set to deviation mode (%)

:LIMIT?→:LIMIT:MODE PCNT;PCNT:

REFERENCE 1.0000E+05;PLIMIT 9.99;DATA

5.00,—5.00

• When the limit mode is set to absolute mode (R)

:LIMIT?→:LIMIT:MODE OHM;OHM:DATA

1.0500E+00,0.9500E+00

:LIMit[:MODE]

Function Sets the limit mode or queries the current setting. Syntax :LIMit[:MODE] {PCNT|OHM}

:LIMit:MODE?

PCNT = Deviation mode (%)

OHM = Absolute mode (R)

Response {PCNT|OHM} Example :LIMIT:MODE PCNT

:LIMIT:MODE?→:LIMIT:MODE PCNT

Description When the “:LIMit[:MODE]” setting is changed,

the following settings are also automatically

changed as follows.

When changed from OHM to PCNT

Display unit “:DISPlay[:MODE]” Deviation (%)

Limit values “:LIMit:PCNT[:DATA]” HI=0%,

LO=0% Ref. val “:LIMit:PCNT:REFerence” 100.00 kΩ When changed from PCNT to OHM Display unit “:DISPlay[:MODE]” Absolute(R) Limit values “:LIMit:OHM[:DATA]” HI= 0 Ω,

LO= 0 Ω

:LIMit:OHM?

Function Queries all settings when the limit mode is set

to absolute mode (R). Syntax :LIMit:OHM? Example :LIMIT:OHM?→:LIMIT:OHM:DATA 1.0500E+00,

0.9500E+00

:LIMit:OHM[:DATA]

Function Sets the limit values (absolute value (R)) or

queries the current setting. Syntax :LIMit:OHM[:DATA] {<Resistance (HI)>,

<Resistance (LO)>}

:LIMit:OHM:DATA?

<Resistance> = 0.000 Ω to 1.200 Ω

Response <NR3>, <NR3> (Output in the order HI and

LO)

Example :LIMIT:OHM:DATA 1.05OHM,0.95OHM

:LIMIT:OHM:DATA?→:LIMIT:OHM:DATA

1.0500E+00, 0.9500E+00

Description • The HI value must be greater than the LO

value. Otherwise, an error (815) occurs.

• When the “:LIMit[:MODE]” is set to PCNT, the “:LIMit:OHM[:DATA]” setting cannot be changed or queried. Doing so will result in an error (812).

10-20 IM 755601-01E

10.2 Commands

:LIMit:PCNT?

Function Queries all settings when the limit mode is set

to deviation mode (%). Syntax :LIMit:PCNT? Example :LIMIT:PCNT?→:LIMIT:PCNT:

REFERENCE 1.0000E+05;PLIMIT 9.99;DATA

5.00, —5.00

:LIMit:PCNT[:DATA]

Function Sets the limit values (deviation (%)) or queries

the current setting. Syntax :LIMit:PCNT[:DATA] {<NRf(HI)>[,<NRf(LO)>]}

:LIMit:PCNT:DATA?

When the “:LIMit:PCNT:PLIMit” is set to

9.99

<NRf> = —9.99 to 9.99% (Resolution 0.01%)

When the “:LIMit:PCNT:PLIMit” is set to

99.9

<NRf> = —99.9 to 99.9% (Resolution 0.1%)

Response <NR2>, <NR2> (Outputs in the order HI

and LO.)

Example :LIMIT:PCNT:DATA —5,5

:LIMIT:PCNT:DATA?→:LIMIT:PCNT:DATA

5.00,—5.00

Description • The range and resolution of the limit values vary

depending on the “:LIMit:PCNT:PLIMit” setting.

• If the LO parameter is omitted, the value equal to (0 – HI) is set to LO.

• If HI is less than LO, an error (815) occurs.

• When the “:LIMit[:MODE]” is set to OHM, the “:LIMit:PCNT[:DATA]” setting cannot be changed or queried. Doing so will result in an error (813).

:LIMit:PCNT:PLIMit

Function Sets the percent limit when the limit mode is set

to deviation (%) or queries the current setting.

Syntax :LIMit:PCNT:PLIMit {<NRf>}

:LIMit:PCNT:PLIMit?

<NRf> = 9.99 or 99.9

Response {9.99|99.90}(<NR2> form) Example :LIMIT:PCNT:PLIMit 9.99

:LIMIT:PCNT:PLIMIT?→:LIMIT:PCNT:PLIMIT

9.99

Description • When the “:LIMit:PCNT:PLIMit” is changed,

the following settings are also automatically changed.

When the percent limit is changed from

9.99 to 99.9

Limit values HI = 0.0%, LO = 0.0% (:LIMit:PCNT[:DATA])

When the percent limit is changed from

99.9 to 9.99

Limit values HI = 0.00%, LO = 0.00% (:LIMit:PCNT[:DATA])

• When the “:LIMit[:MODE]” is set to OHM, the “:LIMit:PCNT:PLIMit” setting cannot be changed or queried. Doing so will result in an error (813).

:LIMit:PCNT:REFerence

Function Sets the reference value when the limit mode is

set to deviation (%) or queries the current setting.

Syntax :LIMit:PCNT:REFerence {<Resistance>}

:LIMit:PCNT:REFerence?

<Resistance> = 0.0000 Ω to 120.00 MΩ

Response <NR3> form Example :LIMIT:PCNT:REFERENCE 100KOHM

:LIMIT:PCNT:REFERENCE?→:LIMIT:PCNT:

REFERENCE 1.0000E+05

Description • The measurement range is determined by

the “:LIMit:PCNT:REFerence” setting.

• When the “:LIMit[:MODE]” is set to OHM, the “:LIMit:PCNT:REFerence” setting cannot be changed or queried. Doing so will result in an error (813).

Communication Commands

10-21IM 755601-01E

10.2 Commands

10.2.8 MEASure Group

The commands in the MEASure Group deal with measurements. These commands can be used to make the same settings and inquiries as when the SETUP/MEAS key on the front panel is pressed.

:MEASure <Space> OFF

<NRf>

:MEASure

Function Starts or stops the measurement

(measurement/SETUP modes) or queries the current setting.

Syntax :MEASure {<Boolean>}

:MEASure?

<Boolean> = ON(1)

Starts the measurement

(switches to the

measurement mode).

= OFF(0)

Stops the measurement

(switches to the SETUP

mode).

Response {1|0} Example :MEASURE ON

:MEASURE?→:MEASURE 1

Description • Of the commands provided by the

instrument, only the SETUP commands belonging to the groups indicated below can be executed while the measurement is in progress (measurement mode). Attempting to execute the other commands will result in an error (800). Query commands can be executed in either measurement mode or SETUP mode (except for some commands in the RECall Group). COMMunicate Group DISPlay Group MEASure Group STATus Group Common Command Group

• When the HOLD signal of the handler interface is active (L), only the SETUP commands belonging to the groups indicated below can be executed. (The commands in the Measure Group cannot be executed.) Attempting to execute the other commands will result in an error (801). COMMunicate Group DISPlay Group STATus Group Common Command Group

10-22 IM 755601-01E

10.2 Commands

10.2.9 MTIMe(Meas TIMe) Group

The commands in the MTIMe(Meas TIMe) Group deal with the measurement time. These commands can be used to make the same settings and inquiries as when the MEAS TIME key on the front panel is pressed.

:MTIMe <Space> NORMal

FAS T

HSPeed

:MTIMe

Function Sets the type of measurement time or queries

the current setting.

Syntax :MTIMe {NORMal|FAST|HSPeed}

:MTIMe?

Response {NORMal|FAST|HSPeed} Example :MTIME NORMAL

:MTIME?→:MTIME NORMAL

Description For the measurement time and interval

corresponding to the specified type of measurement time (when the trigger mode is set to internal), see page 4-9.

10.2.10 PANel Group

The commands in the PANel Group deal with the initialization of setup information.

;

:PANel : SAVE <Space> <NRf>

RECall <Space> <NRf>

INITializ e

:PANel:INITialize

Function Initializes settings. Syntax :PANel:INITialize Example :PANEL:INITIALIZE Description • For the initial values, see page 1-7.

• Settings related to communications are not initialized.

• When the initialization is executed, all measured data that are stored are cleared.

Communication Commands

10-23IM 755601-01E

10.2 Commands

10.2.11 PRINt Group (Option)

The commands in the PRINt Group deal with the print functions available via the Centronics interface. These commands can be used to make the same settings and inquiries as the “Prin” or “dAtA” menu accessible through the MISC key on the front panel.

;

:PRINt : STAT e ?

EXECute

ABORt

FORMat <Space> OFF_A4

ON_A4

OFF_RP

ON_RP

:PRINt?

Function Queries all settings related to the printer output. Syntax :PRINt? Example :PRINT?→:PRINT:FORMAT OFF_RP

:PRINt:ABORt

Function Aborts printing. Syntax :PRINt:ABORt Example :PRINT:ABORT

:PRINt:EXECute

Function Starts printing. This is an overlap command Syntax :PRINt:EXECute Example :PRINT:EXECUTE Description • Outputs the measured data that are stored in

the internal memory and the statistics of the data to an external printer.

• Printing fails with an error (830) if there are no measured data stored in the memory.

:PRINt:FORMat

Function Sets the contents to be printed (sets whether or

not to print measured data) or queries the current setting.

Syntax :PRINt:FORMat {OFF_A4|ON_A4|OFF_RP|ON_RP}

:PRINt:FORMat?

OFF_RP = Prints the statistics to a paper

size (roll paper) on which 40

characters can be printed

horizontally. Measured data are

not printed.

ON_RP = Prints the statistics as well as

the measured data to a paper

size (roll paper) on which 40

characters can be printed

horizontally.

OFF_A4 = Prints the statistics to an A4

size paper. Measured data are

not printed.

ON_A4 = Prints the statistics as well as

the measured data to an A4 size

paper.

Response {OFF_A4|ON_A4|OFF_RP|ON_RP} Example :PRINT:FORMAT OFF_A4

:PRINT:FORMAT?→:PRINT:FORMAT OFF_A4

:PRINt:STATe?

Function Queries the printer output condition. Syntax :PRINt:STATe? Response {BUSY|IDLE}

BUSY = Printer busy

IDLE = Printer ready

Example :PRINT:STATE?→IDLE

10-24 IM 755601-01E

76543210

OHM C.F OVR LO HI IN DAVN.C

10.2 Commands

10.2.12 READ Group

The commands in the READ Group deal with the querying of the measured data. There are no front-panel keys that correspond to the commands in this group.

:READ ?

:READ?

Function Queries the measured data. Syntax :READ? Response <Measurement information>, <Data>

• <Measurement information> = <NR1> form, register value in decimal notation (See the figure below) (The values inside the parentheses () are those which exist when the measurement is displayed in Ω.) 0: No data 3 (131): Normal data (Comparator result: IN) 5 (133): Normal data (Comparator result: HI) 9 (137): Normal data (Comparator result: LO) 21: Overrange (Comparator result:

fixed to HI)

37: Contact check error (Comparator

result: fixed to HI)

69: Abnormalities detected in the test

current (Comparator result: fixed to HI)

• <Data> = <NR3> form When the measurement display is set to % [–]*.*****E+02 Mantissa: 5.5 digits maximum, Exponent:02 (fixed) When the measurement display is set to Ω [–]*.*****E+** Mantissa: 5.5 digits maximum, Exponent: depends on the measurement range. When there are no data (Display “----”)

9.91E+37 (NAN:Not A Number) When overrange (Display “–oL–”) When contact check error (Display “–n.C–”) When abnormalities are detected in the test current (Display “–c.F–”)

9.9E+37 (INFinity:+∞)

Example This is an example in which the measurement

information is ON (“:HEADer ON”). When the measurement information is OFF, <Measurement information> and "," are not output.

• During % display: READ?→3,0.00987E+02 (Comparator result:IN) (0.987%)

• During % display: READ?→9,—0.05012E+02 (Comparator result:LO) (—5.012%)

• During Ω display: READ?→133,1.06135E+07 (Comparator result:HI) (10.6135 MΩ)

• When there are no data: READ?→0,9.91E+37

• When the value is over the range:

READ?→21,9.9E+37

• When a contact check error occurs:

READ?→37,9.9E+37

• When abnormalities are detected in the test current : READ?→69,9.9E+37

Description • The instrument stores the measured results

to the measurement data buffer every time a measurement completes. “:READ?” is a query used to inquire about the contents of the measurement data buffer. The buffer is cleared when a query is made.

• When the “:TRIGger:MODE” is set to EXTernal or MANual, there are cases in which the measurement data buffer is empty, because the next measurement is not yet complete. The response in this case contains no data (<Measurement information> is “0,” <Data> is “9.91E+37”).

• When the measurement is stopped and the instrument switches to the SETUP mode (“:MEASure OFF”), the measurement data buffer is cleared.

• You can determine whether or not the measured result is stored in the measurement data buffer by checking whether or not bit 0 (DAV) of the status register is set to “1.”

• The <Data> condition and the comparator results are included in the <Measurement information>. The bit assignments of the information are as follows:

bit0 (DAV): Set to “1” when the measured data

are stored in the output buffer.

bit1 (IN): Set to “1” when the comparator

result is “IN.”

bit2 (HI): Set to “1” when the comparator

result is “HI.”

bit3 (LO): Set to “1” when the comparator

result is “LO.”

bit4 (OVR): Set to “1” when the measured

value is over the range. (Display “–oL–”)

bit5 (N.C): Set to “1” when a contact check

error occurs. (Display “–n.C–”)

bit6 (C.F): Set to “1” when abnormalities are

detected in the test current. (Display “–C.F–”)

bit7 (OHM): Set to “1” when the measured data

are correct absolute (R) data.

Communication Commands

10-25IM 755601-01E

10.2 Commands

10.2.13 RECall Group

The commands in the RECall Group deal with the recalling of the measured data. These commands can be used to make the same settings and inquiries as when the RECALL DATA key on the front panel is pressed.

;

:RECall : STAT e <Space> OFF

<NRf>

RESult ? <Space>

;

DATA : ASCii ? <Space>

BINar y

LIMit

COUNt

STATistics

:RECall?

Function Queries all settings related to the recalling of

the measure data. Syntax :RECall? Example :RECALL?→:RECALL:STATE 0

:RECall:DATA[:ASCii]?

Function Queries the measured data that are stored in

ASCII format.

Syntax :RECall:DATA[:ASCii]? {<NRf>, <NRf>}

(Parameters can be omitted) <NRf>, <NRf> = 1 to 2000 (Specify the

<Recall start number (S)> then the <Number of recalls (N)>)

Response <Set 1>, <Set 2>, ... ,<Set N>

<Set 1> = “<Measurement information> and

<Measured data>” of the (S)th data set.

<Set 2> = “<Measurement information> and

<Measured data>” of the (S+1)th

data set. ... <Set N> = ”<Measurement information> and

<Measured data>” of the (S+N—1)th

data set.

• The contents of Set N are all in the

“<Measurement information>, <Measured data>” form. This is the same form as the response of the“:READ?” command. If the measurement information is OFF, <Measurement information> and “,”are not output.

Example :RECALL:DATA:ASCII?→3,0.00987E+02,3,

0.01012E+02,...,3,0.00953E+02

Description • If the parameters are omitted, all measured data

that are stored are output. In other words, the output is the same as when the parameters are set to {1, (the value equal to :STORe:POINts?)}.

• If the number of recalls specified by the

parameter is larger than the number of data that are actually stored, “No data” is output for the latter recalls containing no data.

• This query cannot be made in the measurement

mode. Doing so will result in an error (800).

10-26 IM 755601-01E

YOKOGAWA 7556 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

Checking the Contents of the Package

Safety Precautions

Waste Electrical and Electronic Equipment

EU Battery Directive

How to Use this Manual

Contents

Chapter 1 Functions

1.1 Block Diagram

1.2 Functions

1.3 Digital Numbers and Characters and A List of Menus

1.4 A List of Initial Values

Chapter 2 Names and Uses of Parts

2.1 Names of Parts

2.2 Keys and Error Displays

Chapter 3 Before Starting Measurements

3.1 Precautions on the Use of the instrument

3.2 Installing the Instrument

3.3 Connecting the Power Cord

3.4 Wiring

Chapter 4 Setting the Measurement Conditions

4.1 Switching the Limit Mode

4.2 Changing the Range (Reference)

4.3 Using the Comparator Function

4.4 Using the Contact Check Function

4.5 Setting the Measurement Time

4.6 Using the Trigger Function

Chapter 5 Making Measurements

5.1 Setting the Measurement Mode

5.2 Switching between Deviation (%) and Absolute (R) Displays

Chapter 6 Other Functions

6.1 Store/Recall Measured Data

6.2 Printing Data

6.3 Initializing the Setup Information

Chapter 7 Using the Handler Interface

7.1 Handler Interface Functions and Specifications

7.2 Setting the Pulse Width of the EOM Signal

7.3 Timing Chart

Chapter 8 Using the Serial (RS-232) Interface

8.1 Serial (RS-232) Interface Functions and Specifications

8.2 Connecting the Serial (RS-232) Interface Cable

8.3 Handshaking

8.4 Data Format

8.5 Serial Communication Settings

Chapter 9 Using the GP-IB Interface

9.1 GP-IB Interface Functions and Specifications

9.2 Connecting the Interface Cable

9.3 Responses to Interface Messages

9.4 Switching to the Addressable Mode

9.5 Switching to the Talk-only Mode

Chapter 10 Communication Commands

10.1 Before Programming

10.1.1 Messages

10.1.2 Commands

10.1.3 Responses

10.1.4 Data

10.1.5 Synchronization with the Controller

10.1.6 Programming of Various Functions

10.2 Commands

10.2.1 A List of Commands

10.2.2 CHECk(contact CHECk) Group

10.2.3 COMMunicate Group

10.2.4 DISPlay Group

10.2.5 HANDler Group

10.2.6 HEADer Group

10.2.7 LIMit Group

10.2.8 MEASure Group

10.2.9 MTIMe(Meas TIMe) Group

10.2.10 PANel Group

10.2.11 PRINt Group (Option)

10.2.12 READ Group

10.2.13 RECall Group