Hioki RM3544-01 User Manual

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RM3544 RM3544-01

Instruction Manual

RESISTANCE METER

Be sure to read this manual before using the instrument.

When using the instrument for the

rst time

Names and Functions of Parts

Measurement Preparations

p.17 Troubleshooting



p.25 Error Displays and



Troubleshooting

Mar. 2019 Revised edition 4 RM3544A981-04 19-03H



Remedies

p.3

p.160

p.169

Using This Instruction Manual

To do this… Refer to these sections in this manual.

Review important information

Start using the instrument right away

Learn more about instrument functions

Learn more about product specifications

Troubleshoot a problem

Learn more about resistance measurement

Learn more about communications commands

Safety Information (p.3) Operating Precautions (p.5)

Overview (p.15)

Search for the function in question in the table of contents (p.i) or the index (p.Index 1).

Specifications (p. 145)

Troubleshooting (p. 160)

Appendix (p. A1)

Communications Command Instruction Manual (on the application disc)

RM3544A981-04

Introduction.....................................................1

Verifying Package Contents...........................1

Safety Information ..........................................3

Operating Precautions.................................... 5

Chapter 1 Overview 15

1.1 Product Overview and Features ........ 15

1.2 Names and Functions of Parts ........... 17

1.3 Measurement Process .......................19

1.4 Screen Organization and Operation

Overview ............................................21

Contents

Chapter 4 Customizing

Measurement Conditions 43

4.1 Zero Adjustment .................................44

4.2 Stabilizing Measured Values

(Averaging Function) ..........................50

4.3 Correcting for the Effects of Temperature

(Temperature Correction (TC)) ...........52

4.4 Correcting Measured Values and Displaying Physical Properties Other than Resistance Values (Scaling Function) 54

4.5 Changing the Number of Measured

Value Digits ........................................58

Chapter 2 Measurement

Preparations 25

2.1 Connecting the Power Cord............... 25

2.2 Connecting Measurement Leads .......26

2.3 Connecting Z2001 Temperature Sensor

(When using the TC) .........................27

2.4 Turning the Power On and Off ........... 28

 Turning On the Instrument with the Main

Power Switch ............................................28

 Turning Off the Instrument with the Main

Power Switch ............................................28

 Canceling the Standby State ....................28

 Placing the Instrument in the Standby

State .........................................................29

2.5 Pre-Operation Inspection ...................30

Chapter 3 Basic Measurements

3.1 Selecting the Measurement Range .... 32

3.2 Setting the Measurement Speed ....... 33

3.3 Connecting Measurement Leads to the

Measurement Target .........................34

3.4 Checking Measured Values ............... 35

 Switching the Display ................................35

 Confirming Measurement Faults ...............38

 Holding Measured Values ......................... 41

Chapter 5 Judgment

Function 59

5.1 Judging Measured Values

(Comparator Function) .......................60

 Enabling and Disabling the Comparator

Function ................................................... 61

 Decide According to Upper/Lower Thresholds

(ABS Mode) ............................................. 62

 Decide According to Reference Value and

Tolerance (REF% Mode) ......................... 64

 Delaying the judge timing ......................... 66

 Checking Judgments Using Sound

(Judgment Sound Setting Function) ........ 68

 Checking Judgments with the L2105 LED

Comparator Attachment (Option) ............. 70

Chapter 6 Saving and Loading

Panels (Saving and Loading Measurement Conditions) 71

6.1 Saving Measurement Conditions

(Panel Save Function) ........................72

6.2 Loading Measurement Conditions

(Panel Load Function) ........................73

 Preventing Loading of Zero-adjustment

Values ...................................................... 74

Contents

6.3 Changing Panel Names .....................75

6.4 Deleting Panel Data ...........................76

Chapter 7 System Settings 77

7.1 Disabling and Enabling Key Operations

............................................................78

 Disabling Key Operations

(Key-Lock Function) ................................. 78

 Re-Enabling Key Operations

(Key-Lock Cancel) ................................... 79

7.2 Power Line Frequency Manual Setting

............................................................80

7.3 Enabling or Disabling the Key Beeper 82

7.4 Adjusting Screen Contrast ..................83

7.5 Adjusting the Backlight .......................84

7.6 Initializing (Reset) ...............................85

 Default Settings ........................................ 87

Chapter 8 External Control

(EXT I/O) 89

8.1 External Input/Output Connector

and Signals......................................... 90

 Switching between Current Sink (NPN) and

Current Source (PNP) 90

 Connector Type and Signal Pinouts ........ 91

 Signal Descriptions .................................. 93

8.2 Timing Chart .......................................97

 From Start of Measurement to Acquisition

of Judgment Results ................................ 97

 Zero-adjustment timing ............................ 99

 Panel Load Timing ................................. 100

 BCD Signal Timing ................................. 100

 Output Signal State at Power-On ........... 101

 Acquisition Process When Using an

External Trigger ..................................... 102

8.3 Internal Circuitry ...............................104

 Electrical Specifications ......................... 106

 Connection Examples ............................ 107

8.4 External I/O Settings ........................109

 Setting Measurement Start Conditions

(Trigger Source) ..................................... 109

 Setting the TRIG Signal Logic ................ 111

 Eliminating TRIG/PRINT Signal Chatter

(Filter Function) ...................................... 113

 Setting EOM Signal ................................ 115

 Switching Output Modes

(JUDGE Mode/ BCD Mode) ................... 117

8.5 Checking External Control ............... 118

 Performing an I/O Test

(EXT I/O Test Function) ......................... 118

8.6 Supplied Connector Assembly ......... 120

Chapter 9 Communications

(USB/ RS-232C Interface) 121

9.1 Overview and Features .................... 121

 Specifications ......................................... 122

9.2 Preparations before Use

(Connections and Settings) ............. 123

 Using the USB Interface ......................... 123

 Using the RS-232C Interface ................. 126

9.3 Controlling the Instrument with

Commands and Acquiring Data ....... 130

 Remote and Local States ....................... 130

 Displaying Communications Commands

(Communications Monitor Function) 131

9.4 Auto-Exporting Measured Values (at End of Measurement)

(Data Output Function) .................... 133

Chapter 10 Printing

(Using an RS-232C Printer) 137

10.1 Connecting the Printer to the Instrument

.......................................................... 137

10.2 Printing ............................................. 140

 Printing Measured Values and Comparator

Judgments ..............................................140

 Printing List of Measurement Conditions and

Settings .................................................. 140

iii

Contents

Chapter 11 Specifications 145

11.1 Instrument Specifications ................. 145

 Measurement Ranges ............................145

 Measurement Method .............................145

 Measurement Specifications ...................146

 About Instrument Accuracy .....................148

 Functions ................................................149

 Interface ..................................................154

 Environment and Safety Specifications ..158

 Accessories ............................................ 158

 Options ...................................................158

Chapter 12Maintenance and

Service 159

12.1 Troubleshooting ............................... 160

 Q&A (Frequently Asked Questions) ........160

 Error Displays and Remedies .................169

12.2 Replacing the Measurement Circuit’s

Protective Fuse ................................171

12.3 Inspection and Repair ......................172

Appendix A 1

Appendix 1 Block Diagram .......................... A 1

Appendix 2 Four-Terminal

(Voltage-Drop) Method............. A 2

Appendix 3 DC and AC Measurement ........A 3

Appendix 4 Temperature Correction

(TC) Function ........................... A 4

Appendix 5 Effect of Thermal EMF ............. A 6

Appendix 6 Zero Adjustment ....................... A 8

Appendix 7 Unstable Measured Values .... A 13

Appendix 8 Using Multiple RM3544s ........ A 21

Appendix 9 Detecting the Location of a

Short on a Printed Circuit

Board...................................... A 22

Appendix 10JEC 2137 Induction Machine-

compliant Resistance

Measurement ......................... A 23

Appendix 11Making Your Own Measurement

Leads ..................................... A 24

Appendix 12Checking Measurement Faults

............................................... A 26

Appendix 13Using the Instrument with a

Withstanding Voltage TesterA ...27 Appendix 14Measurement Leads (Options)

............................................... A 28

Appendix 15Rack Mounting...................... A 29

Appendix 16Dimensional Diagram ........... A 33

Appendix 17Calibration............................. A 34

Appendix 18Adjustment Procedure .......... A 38

Appendix 19Instrument Settings (Memo) . A 39

Index Index 1

Appendix

Index

Contents

Introduction

When you receive the instrument, inspect it carefully to ensure that no damage occurred during shipping. In particular, check the accessories, panel switches, and connectors. If damage is evident, or if it fails to operate according to the specifications, contact your authorized Hioki distributor or reseller.

Confirm that these contents are provided.

 Model RM3544 or RM3544-01 .................. 1

 Power Cord (2-line + ground) (p. 25) ........ 1

 Model L2101 Clip Type Lead .................... 1

 Spare Fuse (F500mAH/250V) ................... 1

 Instruction Manual (This document) ...1

* The latest version of the application disc can be downloaded from the Hioki web site.

 Application disc (CD)*.........................1

(Communications Command Instruction Manual, USB driver)

 USB cable (A-B type) .........................1

 EXT I/O Male Connector (p. 120).......1

RM3544-01 only

Introduction

Thank you for purchasing the HIOKI Model RM3544/ RM3544-01 Resistance Meter. To obtain maximum performance from the instrument, please read this manual first, and keep it handy for future reference.

Model RM3544-01 is the same as the RM3544, but with USB, RS-232C, and EXT I/O included.

Trademarks

• Microsoft and Windows are either registered trademarks or trademarks of Microsoft Cor-

poration in the United States and other countries.

• TEFLON is a registered trademark or trademark of The Chemours Company FC, LLC

Verifying Package Contents

Inspection

Content confirmation

Measurement

Model L2101 Clip Type Lead

Model L2102 Pin Type Lead

Model L2103 Pin Type Lead

Model L2104 4-Terminal Lead

Interface Cables

Model 9637 RS-232C Cable (9pin-9pin/ 1.8 m/ crossover cable) Model 9638 RS-232C Cable (9pin-25pin/ 1.8 m/ crossover cable)

Model L2105 LED Comparator Attachment

Model Z2001 Temperature Sensor

Verifying Package Contents

Options

Contact your authorized Hioki distributor or reseller for details.

See: "Appendix 14 Measurement Leads (Options)" (p. A28)

Safety Information

This instrument is designed to conform to IEC 61010 Safety Standards, and has been thoroughly tested for safety prior to shipment. However, using the instrument in a way not described in this manual may negate the provided safety features. Before using the instrument, be certain to carefully read the following safety notes.

Mishandling during use could result in injury or death, as well as damage to the product. Be certain that you understand the instructions and precautions in the manual before use.

With regard to the electricity supply, there are risks of electric shock, heat generation, fire, and arc discharge due to short circuits. If persons unfamiliar with electricity measuring instruments are to use the product, another person familiar with such instruments must supervise operations.

This manual contains information and warnings essential for safe operation of the instrument and for maintaining it in safe operating condition. Before using it, be sure to carefully read the following safety precautions.

Safety Symbols

In the manual, the symbol indicates particularly important information that the user should read before using the instrument.

The symbol printed on the instrument indicates that the user should refer to a corresponding topic in the manual (marked with the symbol) before using the relevant function.

Indicates AC (Alternating Current).

Indicates the ON side of the power switch.

Indicates the OFF side of the power switch.

Indicates a fuse.

The following symbols in this manual indicate the relative importance of cautions and warnings.

Indicates that incorrect operation presents an extreme hazard that could result in serious injury or death to the user.

Indicates that incorrect operation presents a significant hazard that could result in serious injury or death to the user.

Indicates that incorrect operation presents a possibility of injury to the user or damage to the instrument.

Indicates advisory items related to performance or correct operation of the instrument.

Safety Information

Symbols for Various Standards

Indicates that the product conforms to regulations set out by the EU Directive.

WEEE marking: This symbol indicates that the electrical and electronic appliance is put on the EU market after August 13, 2005, and producers of the Member States are required to display it on the appliance under Article 11.2 of Directive 2002/96/EC (WEEE).

Other Symbols

Indicates the prohibited action.

(p. )

[ ]

SET

(Bold characters)

Accuracy

We define measurement tolerances in terms of f.s. (full scale), rdg. (reading) and dgt. (digit) values, with the following meanings.

f.s.

rdg.

dgt.

See: "Example accuracy calculations" (p. 148)

Indicates the location of reference information.

Indicates that descriptive information is provided below.

Square brackets indicate instrument display labels (such as setting item names).

Bold characters within the text indicate operating key labels.

(maximum display value) This is usually the name of the maximum displayable value. For this instrument, it indicates the currently selected range.

(reading or displayed value) The value currently being measured and indicated on the measuring instrument.

(resolution) The smallest displayable unit on a digital measuring instrument, i.e., the input value that causes the digital display to show a “1” as the least-significant digit.

Operating Precautions

Follow these precautions to ensure safe operation and to obtain the full benefits of the various functions.

Preliminary Checks

Before using the instrument for the first time, verify that it operates normally to ensure that no damage occurred during storage or shipping. If you find any damage, contact your authorized Hioki distributor or reseller.

Before using the instrument, make sure that the insulation on the power cord, leads or cables is undamaged and that no bare conductors are improperly exposed. Using the instrument in such conditions could cause an electric shock, so contact your authorized Hioki distributor or reseller for replacements.

10 mm or more

Rear

50 mm or more 50 mm or more

The instrument can be used with the stand (p. 18). It can also be rack-mounted. (p. A29).

Operating Precautions

Instrument Installation

Operating temperature and humidity : 0 to 40°C at 80% RH or less (non-condensating) Storage temperature and humidity : -10°C to 50°C at 80% RH or less (non-condensating)

Avoid the following locations that could cause an accident or damage to the instrument.

Correct measurement may be impossible in the presence of strong magnetic fields, such as near transformers and high-current conductors, or in the presence of strong electromagnetic fields such as near radio transmitters.

Exposed to direct sunlight Exposed to high temperature

Exposed to water, oil, other chemicals, or solvents Exposed to high humidity or condensation

Exposed to high levels of particulate dust

Subject to vibration

In the presence of corrosive or explosive gases

Exposed to strong electromagnetic fields Near electromagnetic radiators

Near induction heating systems (e.g., high-frequency induction heating systems and IH cooking utensils)

Installation Precautions

• The instrument should be operated only with the bottom downwards.

• Do not place the instrument on an unstable or slanted surface.

Unplugging the power cord kills power to the instrument. Be sure to provide enough unobstructed space to unplug the power cord immediately in an emergency.

Handling the Instrument

• Do not allow the instrument to get wet, and do not take measurements

with wet hands. This may cause an electric shock.

• Do not attempt to modify, disassemble or repair the instrument; as

fire, electric shock and injury could result.

• To avoid damage to the instrument, protect it from physical shock when

transporting and handling. Be especially careful to avoid physical shock from dropping.

• To avoid damage to the instrument, do not apply voltage or current to mea-

surement terminals, TEMP.SENSOR jack, or COMP.OUT jack.

• This instrument may cause interference if used in residential areas. Such

use must be avoided unless the user takes special measures to reduce electromagnetic emissions to prevent interference to the reception of radio and television broadcasts.

• Use the original packing materials when transporting the instrument, if pos-

sible.

Handling the Cords and Leads

Operating Precautions

To avoid electrical shock, be careful to avoid shorting live lines with the test leads.

• Avoid stepping on or pinching cables, which could damage the cable insula-

tion.

• To avoid breaking cables or lead wires, do not bend or pull them.

• To avoid damaging the power cord, grasp the plug, not the cord, when

unplugging it from the power outlet.

• To avoid damaging the cable, grasp the connector, not the cable, when

unplugging the cable.

• The ends of the pin type lead are sharp. Be careful to avoid injury.

• Keep the cables well away from heat sources, as bare conductors could be

exposed if the insulation melts.

• Temperature sensors are precision devices. Be aware that excessive volt-

age pulses or static discharges can destroy the film.

• Avoid subjecting the temperature sensor tip to physical shock, and avoid

sharp bends in the leads. These may damage the probe or break a wire.

• To avoid electric shock, do not exceed the lower of the ratings shown on the

instrument and test leads.

Operating Precautions

• Use only the specified cords and leads. Using a non-specified cord or lead

may result in incorrect measurements due to poor connection or other reasons.

• If the part of the temperature sensor that connects to the instrument

becomes dirty, wipe it clean. The presence of dirt may affect temperature measured values by increasing the contact resistance.

• Exercise care so that the temperature sensor connector does not become

disconnected. (If the sensor is disconnected, it will not be possible to perform temperature correction.)

CD-R disc precautions

• Exercise care to keep the recorded side of discs free of dirt and scratches.

When writing text on a disc’s label, use a pen or marker with a soft tip.

• Keep discs inside a protective case and do not expose to direct sunlight,

high temperature, or high humidity.

• Hioki is not liable for any issues your computer system experiences in the

course of using this disc.

Before Connecting the Power Cord

• To avoid electrical accidents and to maintain the safety specifications

of this instrument, connect the power cord provided only to a 3-contact (two-conductor + ground) outlet.

• Use only the designated power cord with this instrument. Use of other

power cords may cause fire.

• Before using the instrument, make sure that the insulation on the

power cord is undamaged and that no bare conductors are improperly exposed. Any damage could cause electric shock, so contact your authorized Hioki distributor or reseller.

To avoid damaging the power cord, grasp the plug, not the cord, when unplugging it from the power outlet.

Before Connecting Measurement Leads

To avoid shock and short circuits, turn off all power before connecting measurement leads.

Before Connecting the LED Comparator Attachment

• To keep from damaging the instrument or LED Comparator Attachment,

turn off the instrument before connecting the attachment.

• The COMP.OUT jack is provided exclusively for use with the L2105. Do not

connect any device other than the L2105.

• The attachment may not fulfill the specifications if the connector is not

attached securely.

• Do not over-tighten the cable tie around the measurement leads. Doing so

may damage the measurement leads.

• Avoid the following as damage to the cable conductor or insulation may

result: Twisting or pulling on cables Bending cables near the lamp excessively in order to connect them

Before Connecting the Temperature Sensor

Failure to fasten the connectors properly may result in sub-specification performance or damage to the equipment.

Note the following precautions to avoid damaging the instrument:

• To keep from damaging the instrument or temperature sensor, turn off the

instrument’s main power switch before connecting the sensor.

• Connect the temperature sensor by inserting the plug all the way into the

TEMP.SENSOR jack. A loose connection can cause a large error component in measured values.

Operating Precautions

If the temperature sensor jack becomes dirty, wipe it clean. The presence of dirt will cause an error in temperature measured values.

Operating Precautions

Before Connecting Data Cables (USB, RS-232C)

Observe the following precautions when connecting the instrument and a controller:

• To avoid faults, do not disconnect or reconnect the USB cable during instru-

ment operation.

• The USB and RS-232C interfaces are not isolated from the ground circuit.

Connect the instrument and the controller to a common earth ground. Using different grounds could result in potential difference between the instrument and the controller. Potential difference on the data cable can result in malfunctions and faults.

• Before connecting or disconnecting the RS-232C Cable, always turn off the

instrument and the controller. Failure to do so could result in equipment malfunction or damage.

• After connecting the RS-232C Cable, tighten the screws on the connector

securely. Failure to secure the connector could result in equipment malfunction or damage.

Before Connecting the Printer

Because electric shock and instrument damage hazards are present, always follow the steps below when connecting the printer.

• Always turn off the instrument and the printer before connecting.

• A serious hazard can occur if a wire becomes dislocated and contacts

another conductor during operation. Make certain connections are secure.

Operating Precautions

Before Switching between Current Sink (NPN) and Current Source (PNP)

• Configure the NPN/PNP setting to accommodate externally connected

equipment.

• Do not operate the NPN/PNP switch while the instrument is on.

Before Connecting EXT I/O

To avoid electric shock or damage to the equipment, always observe the following precautions when connecting to the EXT I/O connector.

• Always turn off the main power switch on the instrument and on any

devices to be connected before making connections.

• Be careful to avoid exceeding the ratings of external terminals (p.

106).

• During operation, a wire becoming dislocated and contacting another

conductive object can be serious hazard. Use screws to secure the external connectors.

• The ISO_5V pin of the EXT I/O connector is a 5V (NPN)/ -5V (PNP)

power output. Do not apply external power to this pin. (External power cannot be supplied to the instrument’s EXT I/O connector.)

To avoid damage to the instrument, observe the following cautions:

• Do not apply voltage or current to the EXT I/O terminals that exceeds their

ratings.

• When driving relays, be sure to install diodes to absorb counter-electromo-

tive force.

• Be careful not to short-circuit ISO_5V to ISO_COM.

• Configure the NPN/PNP setting to accommodate externally connected

equipment.

• Do not operate the NPN/PNP switch while the instrument is on.

See: "Connector Type and Signal Pinouts" (p. 91)

Before Turning Power On

Before turning the instrument on, make sure the supply voltage matches that indicated on its power connector. Connection to an improper supply voltage may damage the instrument and present an electrical hazard.

Avoid using an uninterruptible power supply (UPS) or DC/AC inverter with rectangular wave or pseudo-sine-wave output to power the instrument. Doing so may damage the instrument.

The measurement target is connected to a power supply.

• Never attempt to measure at a point where volt-

age is present. Even if the power supply to the motor is turned off, while the motor is rotating inertially, high electromotive power is generated in terminals. When attempting to measure a transformer or motor immediately after voltage withstanding test, induced voltage or residual charge may damage the instrument.

Rotating inertially

• When the RM3544 is used in a way that connects to a withstanding voltage

tester via switching relays, construct a testing line bearing the following in mind.

See: "Appendix 13 Using the Instrument with a Withstanding Voltage Tester" (p.

A27)

(1) The voltage withstanding specification of switching relays should

include a safe margin over the withstanding testing voltage.

(2) To protect against damage due to arc discharge in relay contacts, all

RM3544 measurement terminals should be grounded during voltage withstanding testing.

(3) To protect against damage due to residual charge, measure resistance

first, and voltage withstanding last.

3158 AC Withstanding Voltage HiTester

Withstand voltage of relay switch is not high enough.

Residual charge from voltage withstanding test is present.

RM3544

Operating Precautions

Before Measuring

• To avoid electric shock or damage to the

instrument, do not apply voltage to the measurement terminals. Also, to avoid electrical accidents, only take measurements after turning off the power to the measurement targets being measured.

• Sparks may result at the moment the instrument is connected to, or

disconnected from, the measurement target. To avoid fire or bodily injury, avoid use in the presence of explosive gases.

• Battery internal resistance cannot be measured with this instrument. It will

sustain damage. To measure battery internal resistance, we recommend the HIOKI 3554, 3555, BT3562, BT3563 and 3561 Battery HiTesters.

• When measuring devices such as power supply transformers with high

inductance or open-type solenoid coils, measured value may be unstable. In such cases, connect a film capacitor of about 1 F between SOURCE A and SOURCE B.

• Carefully insulate all SOURCE A, SENSE A, SENSE B, and SOURCE B

wiring. Proper 4-terminal measurements cannot be performed and an error will occur if core and shield wires touch.

• The SOURCE terminal is protected by a fuse. If the fuse is tripped, the

instrument will display “

Blown Fuse.” and you will not be able to measure

resistance values. If the fuse is tripped, replace the fuse.

See: "12.2 Replacing the Measurement Circuit’s Protective Fuse" (p. 171)

When using the temperature sensor

The temperature sensor is not waterproof. Do not submerse it in water or other liquid.

• Allow the measurement target for which temperature correction is being

performed and the temperature sensor to adjust to the ambient temperature prior to measurement. Failure to do so will result in a large error component.

• Handling of the temperature sensor with bare hands may cause the sensor

to pick up inductive noise, resulting in unstable measured values.

• The temperature sensor is designed for use in applications in which ambi-

ent temperature is measured. It is not possible to accurately measure the temperature of the measurement target itself by placing the sensor in contact with the surface of the target.

• Connect the temperature sensor by inserting the plug all the way into the

TEMP.SENSOR jack. A loose connection may cause a large error component in measured values.

Operating Precautions

• Installed footprint: 215 mm × 166 mm

Compact footprint and limited depth leave plenty of work space in front of the instrument.

• Measurement range: 30.000 m to 3.0000 M with a basic accuracy of 0.02%

rdg.

• Maximum measurement current: 300 mA

Ensures stable measurement, even when there is a significant amount of external noise.

• No need for warm-up operation or zero-adjustment

Since wasteful wait times are not required, you can start making measurements as soon as the instrument is turned on.

• Choice of interfaces

RM3544 (no interface), RM3544-01 (USB, RS-232C, EXT I/O)

Compact yet reliable specifications

1.1 Product Overview and Features

Overview Chapter 1

1.1 Product Overview and Features

The RM3544 is capable of performing high-speed, high-precision measurement of the winding resistance of components such as motors and transformers, the contact resistance of relays and switches, the pattern resistance of printed circuit boards, and the DC resistance of fuses, resistors, and materials such as conductive rubber using four-terminal measurement. Since the instrument incorporates a temperature correction function, it is particularly well suited to the measurement of targets whose resistance values vary with temperature.

LED Comparator Attachment (option)

Streamlines work by eliminating the need to look at the screen.

Graphical LCD

Operation is intuitive and easy to learn.

Easy configuration of comparator and panel load operation

Facilitates smooth setup changes on production lines.

Simple basic settings

Range and measurement speed can be set directly.

Guard terminal

You can reduce the effects of external noise by connecting the guard terminal.

Free power supply (100 to 240 V) with automatic frequency switching

Allows the instrument to be easily moved to overseas production lines.

Judgment sounds with user-selectable patterns

Keeps you from mistaking audio from a nearby operator’s instrument as your own.

Easy-to-use functions in research and development, on production lines, or in acceptance inspections

Monitor and test functions

Provides robust support for line development by allowing you to check communications and EXT I/O on the screen.

Example communications monitor screen

Example EXT I/O test screen

1.1 Product Overview and Features

Display Screen (Monochrome graphical LCD)

Display of measurements and settings (p. 21)

Viewing Measured

Values and Settings

COMP indicator LEDs

Indicate the judgment result of the measured value (p.60).

Hi Measured value is above upper limit

IN Pass (meets criteria)

Lo Measured value is below lower limit

Viewing Comparator Results

MENU key

Switching of F key pages

F keys

Selection of settings displayed on the screen

COMP.OUT jack

Connect the L2105 LED Comparator Attachment to view judgment results without needing to refer to the instrument display. (p.70)

Connecting the LED Comparator Attachment

PANEL key

Saving and loading of panels (p.72)

COMP key

Configuration of comparator settings (p.60)

AUTO, RANGE key

Range switching (p.32)

SPEED key

Measurement speed switching (p.33)

Cursor keys

Selection of settings and digits

ENTER key

Acceptance of settings and manual trigger input

ESC key

Cancellation of operation

Settings

Measurement Terminals

Connect measurement leads (p. 26).

• SOURCE A : Current detection terminal

• SOURCE B : Current source terminal

• SENSE A : Voltage detection terminal

• SENSE B : Voltage detection terminal

• GUARD : Guard terminal

Connecting Measurement Leads

STANDBY Key: Initiates or cancels the standby state. (p. 28).

• Unlit: power off (when no power supplied)

• Red light: Standby State (while power is supplied)

• Green light: power on

Initiating and Canceling the Standby State

1.2 Names and Functions of Parts

Front Panel

TEMP.SENSOR jack

Connect the Z2001 Temperature Sensor when using temperature correction (p.27).

Correcting Temperature

RS-232C connector

• Connect to a computer, PLC, or other device (p.126).

• Connect to a printer (p.137).

RS-232C Communications

Printer Output

Fuse holder (p.171)

Replacing the Fuse

Main power switch (p.28)

: Main power off : Main power on

Turning the Main

Power On and Off

EXT I/O connector

Connect when controlling the instrument with a PLC, I/O board, or other equipment to allow measurement to be started and measured values and comparator results to be acquired (p. 89).

External Control

Manufacturer's Serial No.

Do not remove this label, as it is required for product support.

Power Inlet

Connect the supplied power cord (p.25).

Connecting the

Power Cord

EXT I/O NPN/PNP switch

Left : Current sink (NPN) Right : Current source (PNP)

Switching between NPN and PNP

USB jack

Connect to a computer (p.123).

Sending and Receiving

Data via USB

Maintenance terminal

Do not use.

Bottom Panel

Stand

When using the stand

Extend the legs all the way. Do not extend partially. Make sure to extend both legs of the stand.

Collapsing the stand

Do not collapse the stand partway. Be sure to collapse it all the way.

This instrument can be rack mounted.

See: "Appendix 15 Rack Mounting" (p. A29)

Parts removed from this instrument should be stored in a safe place to enable future reuse.

Do not apply heavy downward pressure with the stand extended. The stand could be damaged.

1.2 Names and Functions of Parts

Rear Panel

Install this instrument (p. 5)

Rear Panel

Turn on the instrument and cancel the standby state (p.28)

When finished measuring, turn the power off (p.28).

Connect the temperature sensor (p.27)

(When using the temperature correction function)

Make instrument settings

Connect measurement leads (p.26)

Connect to the test sample (p.34)

Connect the power cord (p.25)

Connect the external interface

(RM3544-01; as necessary)

• Using the printer (p.137)

• Using the USB or RS-232C inter-

face (p.121)

• Using the EXT I/O (p.89)

When clipping a small-gauge wire

(Clip with the tip of the alligator clips.)

When clipping a large-gauge wire

(Clip with the back of the alligator clips, where there are no teeth.)

Front Panel

Rear Front

1.3 Measurement Process

*1 About zero-adjustment

Perform zero-adjustment in the following circumstances:

• The measured value is not cleared due to thermal EMF or other factors.

 The measured value will be adjusted to zero. (Accuracy is not affected by whether or not the zero adjustment is performed.)

• Four-terminal connection (called Kelvin connection) is difficult.

 The residual resistance of the two-terminal connection wires will be canceled.

See: "4.1 Zero Adjustment" (p.44)

"Appendix 6 Zero Adjustment" (p.8)

Trigger source (INT/EXT)

Measurement range

TC (ON)

0ADJ (ON)

Auto range

Key lock state or remote state

 Cancel the key lock state or remote

state by pressing and holding the MENU key.

F.LOCK : All operations prohibited. M.LOCK: Menu operations prohibited. RMT : Remote state

Judgment value

Switched with the VIEW key (No display / temperature /

pre-calculation resistance value)

Page switching

Measurement screen layout

Hold state

Scaling (ON)

Measurement speed

Number and name of loaded panel

Measured value

1.4 Screen Organization and Operation Overview

The instrument’s screen interface consists of a Measurement screen and various Settings screens. The screen examples in this guide appear reversed (black on white) for best visibility on the printed page. However, the instrument screens can actually be displayed only as white characters on black background.

Display of information other than measured values (For more information, see "Confirming Measurement Faults" (p.38).)

* To treat current faults (when the source wiring is open) as over-range events, change the

Display Description

+OvrRng

-OvrRng

- - - - -

current fault output mode setting. (p.40)

Over-range

Not measured, or broken connection in measurement target *

Overview of screen operation

Menu switching

(4) To Settings screens

(1) Measurement screen

(2) Comparator Settings screen

Upper limit value

Lower limit value

(3) Panel Save/Load screen

Select a panel number.

Change values.

Move among digits.

Accept the setting with the key or cancel with the key.

Change the range with the

and keys.

Perform action with an F key.

Select the mode with an F key.

(4) Settings screen

< Setting values >

Make the value editable with the key.

Change values.

Move among digits.

Accept the setting with the key or cancel with the key.

Return to the Measurement screen with the key.

Move to the [MEAS], [SYS], [I/O], or [IF] tab.

([I/O] and [IF] tabs: RM3544-01 only. Not shown on RM3544.)

Select a setting.

Move among settings.

Switch functions with an F key or set values.

1.4 Screen Organization and Operation Overview

List of settings

Measurement screen COMP Comparator function (p.61)

Measurement screen (P.1/2)

Measurement screen (P.2/2)

Settings screen (SETTING)

*1 RM3544-01 only.

Screen Setting and key Overview See

PANEL Save/load panel (p.71)

Measurement Settings screen (MEAS)

System Settings screen (SYS)

EXT I/O Settings screen

(I/O)

Communication Interface Settings screen

(IF)

AUTO

(RANGE) SPEED Measurement speed (p.33)

INFO (F1) Display setting conditions

VIEW (F2)

PRINT (F4) Print 0 ADJ (F1) Zero-adjustment LOCK (F2) Key lock SETTING (F4) Switch to Settings screen 0 ADJUST Clear zero-adjustment (p.48) TC SET Temperature correction (p.52) AVERAGE Averaging (p.50) AUTO HOLD Hold measured value (p.41) COMP DELAY Judge delay (p.66) SCALING(A∗R+B) A: B: UNIT:  DIGITS Set the display digits (p.58) CURR ERROR MODE KEY CLICK Set the operation sound (p.82) COMP BEEP Hi

Lo PANEL LOAD 0ADJ Load zero-adjustment values (p.74) 0ADJ RANGE Zero-adjustment range (p.47) CONTRAST Set the contrast (p.83) BACKLIGHT Set the contrast brightness (p.84) POWER FREQ Set the power frequency (p.80) RESET Reset the instrument (p.85) ADJUST Adjust the instrument (p.A38) TRIG SOURCE Set the trigger source (p.109) TRIG EDGE Set the trigger signal logic (p.111) TRIG/PRINT FILT Trigger/print filter function (p.113) EOM MODE EOM signal setting (p.115) JUDGE/BCD MODE EXT I/O output mode (p.117) EXT I/O TEST Test EXT I/O (p.118) INTERFACE Configure interface settings (p.123) SPEED

CMD MONITOR PRINT INTRVL PRINT COLUMN

Measurement range

Switch measurement screen display

Scaling (p.54)

Set the current fault output mode

Set the judgment sound (p.68)IN

Communications (p.121)DATA OUT

Printing (p.137)

(p.32) (RANGE)

(p.139) (p.44) (p.78)

(p.40)

1.4 Screen Organization and Operation Overview

Measurement

Rear Panel

1 Confirm that the instrument's Main power

switch (rear panel) is OFF( ).

2 Confirm that the mains supply voltage matches

the instrument, and connect the power cord to the power inlet on the instrument.

3 Plug the power cord into the mains outlet.

If power to the instrument is cut off with the power switch in the ON position (by a circuit breaker, etc.), the instrument will start up when power is restored, without any need to press the STANDBY key.

Power inlet

Main power switch

2.1 Connecting the Power Cord

Preparations

Be sure to read the "Operating Precautions" (p.5) before installing and connecting this instrument. Refer to "Appendix 15 Rack Mounting" (p. A29) for rack mounting.

Chapter 2

2.1 Connecting the Power Cord

Turn off the power before disconnecting the power cord.

Connection Methods

Connecting measurement leads

Connect the red plugs to the SOURCE A and SENSE A terminals, the black plugs to the SOURCE B and SENSE B terminals, and the guard plug to the GUARD terminal.

When clipping a small-gauge wire (Clip with the tip of the alligator clips.)

When clipping a large-gauge wire (Clip with the back of the alligator clips, where there are no teeth.)

Measurement leads

(Example: When using the L2101 Clip Type Lead)

SENSE SOURCE

The “V” mark indicates the SENSE side.

SENSE SOURCE

Red

Black

SENSE SOURCE

Red

Black

Red plugs

Black plugs

Guard plug

2.2 Connecting Measurement Leads

Connect the included or optional Hioki measurement leads to the measurement terminals. Before connecting the measurement leads, read "Operating Precautions" (p.5) carefully. Refer to "Options" (p.2) for details.

We recommend using optional Hioki measurement leads.

When making your own measurement leads or extending a measurement lead, see "Appendix 11 Making Your Own Measurement Leads" (p. A24).

2.3 Connecting Z2001 Temperature Sensor (When using the TC)

Connection Methods

Connecting the Z2001 Temperature Sensor

Rear Panel

Z2001 Temperature Sensor

TEMP.SENSOR jack

Insert the plug securely all the way into the jack.

1 Confirm that the instrument's Main

power switch (rear panel) is OFF( ).

2 Plug the Z2001 Temperature Sensor

into the TEMP.SENSOR jack on the rear panel.

3 Place the tip of the temperature sensor

near the measurement target.

2.3 Connecting Z2001 Temperature Sensor (When using the TC)

Before connecting the temperature sensor, read "Operating Precautions" (p.5) carefully.

Turn on ( ) the main power switch on the rear of the instrument.

If the main power switch was turned off while the instrument was not in the standby state, the standby state will be automatically canceled when the main power switch is turned on.

Power ON

Turn off ( ) the main power switch on the rear of the instrument.

Power OFF

Press the STANDBY key (the STANDBY key will change from red to green).

2.4 Turning the Power On and Off

Turning On the Instrument with the Main Power Switch

Turning Off the Instrument with the Main Power Switch

Canceling the Standby State

2.4 Turning the Power On and Off

Self-test

Indicates an error (p. 169).

After the standby state is canceled, a self-test (instrument diagnostic routine) is performed. During the self-test, the following information is displayed while the hardware is verified.

Error

No Errors

Normal display (measurement screen)

The following information is displayed during self-testing:

• Manufacturer and model name

• Firmware versions

• Communication interface setting

• Detected line frequency

• EXT I/O (NPN/PNP) setting

When powered up for the first time, the default settings appear.

See: "Default Settings" (p.87)

Before Starting Measurement

The SOURCE terminal is protected by a fuse. If the fuse is tripped, the instrument will display “Blown FUSE.” and you will not be able to measure resistance values. In this case, replace the fuse.

See: "12.2 Replacing the Measurement Circuit’s Protective Fuse" (p.171)

Measurement settings are recalled from when the power was previously turned off (settings backup).

Placing the Instrument in the Standby State

Press the Standby key (the Standby key will change from green to red).

Disconnect the power cord from the outlet to extinguish the standby key light. When power is turned on again, operation resumes with the same state as when last turned off.

If a power outage (e.g., breaker trip) occurs when the instrument is on, it will automatically turn on again when power is restored (without pressing the standby key).

Do not use the instrument if damage is found, as electric shock or short-circuit accidents could result. Contact your authorized Hioki distributor or reseller.

Metal Exposed

Is the power cord insulation torn, or is any metal exposed?

Peripheral Device Inspection

Is the insulation on a measurement lead torn, or is any metal exposed?

No Metal Exposed

If there is any damage, measured values may be unstable and measurement errors may occur. Replace the cable with an undamaged one.

Metal Exposed

No Metal Exposed

If damage is evident, request repairs.

Yes

Is damage to the instrument evident?

Instrument Inspection

When turning power on

Is the STANDBY key red or green?

The power cord may be damaged, or the instrument may be damaged internally. Request repairs.

After the completion of the self-test (when the model number is shown on the screen), is the Measurement screen displayed?

Yes

The instrument may be damaged internally. Request repairs.

See: "12.1 Troubleshooting" (p. 160)

"Error Displays and Remedies" (p.169)

An error indication occurs

Yes

Inspection complete

2.5 Pre-Operation Inspection

Basic Measurements

Chapter 3

Before making measurements, read "Operating Precautions" (p. 12) carefully.

This chapter explains basic operating procedures for the instrument.

"3.1 Selecting the Measurement Range" (p.32)

"3.2 Setting the Measurement Speed" (p.33)

"3.3 Connecting Measurement Leads to the Measurement Target" (p.34)

"3.4 Checking Measured Values" (p.35)

To customize measurement conditions, see "Chapter 4 Customizing Measurement Conditions" (p.43).

Select the range to use. (AUTO off) The decimal point location and unit indicator change with each key press.

Press this while a manual range is selected. (AUTO lights) The optimum measurement range is automatically selected.

3.1 Selecting the Measurement Range

The measurement range can be set as follows. Auto-ranging (the AUTO range) can also be selected.

Manual Range Setting

Auto-Ranging

Switching from Autoranging back to Manual range selection

Press again. The range can now be changed manually.

• When the comparator function is turned ON, the range cannot be changed from fixed (it

cannot be switched to auto-ranging). To change the range, turn OFF the comparator function or change the range from within the comparator settings.

• When measuring certain motor, transformer or coil components, the auto range setting

may not stabilize. In such cases, use manual range selection.

• The measurement target power is given by (resistance value × (measurement current)

if the measured value is within the measurement range. If the measurement range is exceeded, the power may reach a maximum value that is given by (open voltage × measurement current). Check the measurement range before connecting the measurement target. A rush current of up to 500 mA will flow at the moment the instrument is connected to the measurement target. (Convergence time: For pure resistance, approximately 1 ms)

• Refer to "Resistance Measurement Accuracy" (p. 146) for information on each range

measurement accuracy.

)

Press this to change the measurement speed.

Measurement speed

FAST

MEDIUM SLOW

50 Hz 60 Hz

Measurement time 21 ms 18 ms 101 ms 401 ms

With TC ON, comparator ON, and error of ±10%±2 ms Integration time (detected voltage data acquisition time) reference values FAST (50 Hz): 20.0 ms, FAST (60 Hz): 16.7 ms, MEDIUM: 100 ms, SLOW: 400 ms

3.2 Setting the Measurement Speed

The measurement speed can be set to FAST, MED (medium), or SLOW. The MED (medium) and SLOW settings offer increased measurement precision compared to the FAST setting as well as greater resistance to the effects of the external environment. If the setup is excessively susceptible to the effects of the external environment, shield the

measurement target and measurement leads adequately and twist the cables together.

See: "Appendix 7 Unstable Measured Values" (p.13)

Relationship Between Measurement Range and Speed

(Place leads in contact with target.)

SOURCE A SENSE A SENSE B SOURCE B

The SENSE terminals are placed to the inside of the SOURCE terminals.

3.3 Connecting Measurement Leads to the Measurement Target

Before making measurements, read "Operating Precautions" (p.5) carefully.

Example with L2101

Example with L2102

Example with L2104

The resistance value will be displayed.

• If the display does not indicate the mea-

sured value, see "Confirming Measurement Faults" (p. 38).

• To convert the value into a parameter

other than resistance, see below.

See: "4.4 Correcting Measured Values and

Displaying Physical Properties Other than Resistance Values (Scaling Function)" (p.54)

[VIEW] Switch the Measurement screen.

Switch the function menu to P.1/2.

You can switch this part of the display to show nothing, the temperature, or the precalculation measured value.

See: "Example displays" (p.36)

3.4 Checking Measured Values

When measuring close to 0 , measured values may turn negative. If measured values turn negative otherwise, check the following:

• Are the SOURCE or SENSE wires connected backwards?

 Rewire correctly.

• Has the contact resistance decreased since you performed zero-adjustment?

 Repeat the zero-adjustment process.

• Is the scaling calculation result negative?

 Change the scaling settings.

Switching the Display

You can change what information is shown on the Measurement screen.

Displaying temperature and pre-calculation measured values

(No display) (Temperature display)

Rt: Resistance measured value

before TC calculation

R: Resistance measured value

before scaling

(Value before REF% calculation

: With REF% comparator setting and

scaling OFF)

(Value before REF% calculation

: With REF% comparator setting and

scaling ON)

(Value before TC calculation

: With TC ON)

(Value before scaling calculation

: With scaling ON)

R: Resistance measured value

(before relative calculation)

RS: Resistance measured value

after scaling (before relative calculation)

3.4 Checking Measured Values

Example displays

Display of pre-calculation measured values varies with the settings.

3.4 Checking Measured Values

[INFO] Display measurement conditions.

Switch the function menu to P.1/2.

If the interface type has been set to "printer," you can print settings with .

Return to the Measurement screen.

Displaying a list of measurement conditions and settings

Display the measurement conditions.

Check the measurement conditions.

Return to the Measurement screen.

This fault is displayed in the following two instances. (1) Appears when the measured value is outside of the measurement or display range. (*1) (2) Appears when a measurement fault(*2) occurs (when the current fault mode setting is

“Over-range”). When no measurement current flows from the SOURCE A terminal to the SOURCE B

terminal Similarly, if the measurement range is exceeded in temperature measurement, OvrRng is displayed. The comparator result is Hi when +OvrRng is displayed, and Lo when -OvrRng is displayed. No ERR signal is output.

Over-range

+OvrRng

-OvrRng

Display

- - - - -

Current Fault or measurement not performed

This fault is displayed in the following instances. If “- - - - -” is displayed, a comparator judgment will not be made. (1) Appears when a measurement fault(*2) occurs (when the current fault mode setting is

“Current fault”). When no measurement current flows from the SOURCE A terminal to the SOURCE B terminal

(2) This fault is displayed when no measurement has been performed since the measure-

ment conditions were changed.

Display

Temperature measurement cannot be performed because the temperature sensor has not been connected. There is no need to connect the temperature sensor when not using temperature correction. Switch the display if you do not wish to display the temperature.

See: "Switching the Display" (p.35)

- - . - °C

Temperature sensor not connected

Display

Current fault mode setting (p. 40)

Current fault Over-range

Display: - - - - COMP indicator: No judgment EXT I/O: ERR signal output, no HI signal output

Display: +OvrRng COMP indicator: Hi EXT I/O: No ERR signal output, HI signal output

3.4 Checking Measured Values

Confirming Measurement Faults

When a measurement is not performed correctly, a measurement fault indicator appears and a ERR signal of the EXT I/O is output (no ERR signal is output for over-range or unmeasured events). Operation when a current fault occurs can be changed with the settings.

An unstable measured value may be displayed if the SOURCE terminal is connected to the measurement target but the SENSE terminal has poor contact.

Example displays: Display and output when the probes are open or when the measurement target is open

*1 Over-range Detection Function

Examples of Over-range Faults

Over-range Detection Measurement Example

The measured value is outside of the measurement range.

The relative tolerance (%) display of the measured value exceeds the display range (999.99%).

The zero-adjusted value is outside of the display range.

While measuring, input voltage exceed the A/D converter input range.

Current did not flow normally to the measurement target. (When the current fault mode setting is set to “Over-range output” only)

Attempting to measure 40 m with the 30 m range selected

Measuring 500  (+2400%) with a reference value of 20 

Performing zero-adjustment after connecting 50 m with the 300 m range Measuring 10 m yields a -40 m reading, exceeding the display range.

Measuring a large resistance value in an electrically noisy environment

When the measurement target yields an open FAIL result When either the SOURCE A or SOURCE B terminal suffers from poor contact. *To display “- - - - -” when a current fault occurs, set the current fault mode setting to “Current fault.”(p.40)

*2 Current Fault Detection Function

Example of Current Fault

• SOURCE A or SOURCE B probe open

• Broken measurement target (open work)

• SOURCE A or SOURCE B cable break, poor connection

3.4 Checking Measured Values

• SOURCE wiring resistance in excess of the following values may cause a current fault,

making measurement impossible. When using measurement current 300 mA ranges, keep the wiring resistance as well as the contact resistance between the measurement target and measurement lead low.

(Reference value)

Range

30 m, 300 m 2 

3  70 

30  100 

300  2 k

3 k 700 

30 k to 3 M 2 k

• If a measurement is performed using a high-resistance range, it will take time after the

Wiring resistance and contact resistance

(Resistance value between SOURCE B and SOURCE A,

excluding measurement target)

probes are actually open until a constant current error occurs. Example:300 k range 20 ms

3 M range 250 ms

The Settings screen appears.

Switch the function menu to P.2/2.

Move the cursor to the [MEAS] tab with the left and right cursor keys.

Current fault (default)

Over-range

Selection

Return to the Measurement screen.

3.4 Checking Measured Values

Setting the measurement method for an open target (current fault mode setting)

This section describes how to configure instrument operation when current fault output is detected.

When set to current fault, a break in the measurement target wiring is determined to be an error, and no comparator judgment is made. When set to over-range, a break in the measurement lead or other open state is determined to be an over-range event, and a comparator judgment of Hi results. Choose the setting that best suits your application.

Open the Settings Screen.

Open the Measurement Settings Screen.

Select the desired current fault mode.

Return to the Measurement screen.

The Settings screen appears.

Switch the function menu to P.2/2.

Move the cursor to the [MEAS] tab with the left and right cursor keys.

OFF (default)

Selection

Return to the Measurement screen.

3.4 Checking Measured Values

Holding Measured Values

The auto-hold function provides a convenient way to check measured values. Once the measured value stabilizes, the beeper will sound, and the value will be automatically held.

Open the Settings Screen.

Open the Measurement Settings Screen.

Enable the auto-hold function.

Return to the Measurement screen.

While the measured value is being held, the HOLD indicator will light up.

Canceling auto-hold operation

Hold operation is automatically canceled when the measurement leads are removed from the measurement target and then brought into contact with the measurement target again. You can also cancel hold operation by pressing or changing the range and measurement speed. When hold operation is canceled, the HOLD indicator will go out.

3.4 Checking Measured Values

Customizing Measurement

Conditions

Before making measurements, read "Operating Precautions" (p. 12) carefully.

This chapter explains functionality employed to make more advanced, more accurate measurements.

"4.1 Zero Adjustment" (p. 44)

"4.2 Stabilizing Measured Values (Averaging Function)" (p. 50)

"4.3 Correcting for the Effects of Temperature (Temperature Correction

(TC))" (p. 52)

"4.4 Correcting Measured Values and Displaying Physical Properties Other

than Resistance Values (Scaling Function)" (p. 54)

"4.5 Changing the Number of Measured Value Digits" (p. 58)

Chapter 4

4.1 Zero Adjustment

Perform zero-adjustment in the following circumstances:

• The measured value is not cleared due to thermal EMF or other factors.

 The measured value will be adjusted to zero. (Accuracy is not affected by whether or not the zero adjustment is performed.)

• Four-terminal connection (called Kelvin connection) is difficult.

 The residual resistance of the two-terminal connection wires will be canceled.

For more information about how to perform zero-adjustment properly, see "Appendix 6 Zero Adjustment" (p. A8).

Before Zero Adjustment

• Execute zero adjustment when the ambient temperature has changed, or when a mea-

surement lead is replaced after zero adjustment was performed. However, when performing zero-adjustment is difficult, for example when using the L2102 or L2103 Pin Type Lead, perform zero-adjustment using the standard included L2101 Clip Type Lead or similar lead and then switch to the pin type lead to perform measurement.

• Zero adjustment should be executed in each range to be used. Perform zero-adjustment

for the current range only when setting the range manually or for all ranges when using auto-ranging.

• Zero adjustment values are retained internally even when the instrument is turned off.

They are also saved with panels. You can also elect not to load zero-adjustment values from panels.

See: "6.1 Saving Measurement Conditions (Panel Save Function)"(p.72)

"6.2 Loading Measurement Conditions (Panel Load Function)"(p.73)

• Zero-adjustment can be performed even when the EXT I/O 0ADJ signal is ON (when

shorted with the EXT I/O connector’s ISO_COM pin).

• Although resistance of -3%f.s. to 50%f.s. can be canceled in each range, try to keep the

canceled resistance to 3%f.s. (f.s.=30,000dgt.) The zero-adjustment range can be changed to TIGHT (-3%f.s. to 3%f.s.).

See: "Changing the zero-adjustment range" (p. 47)

• If a resistance that is smaller than the resistance value when zero-adjustment was per-

formed is measured, the measured value will be negative. Example: If you set an offset of 20 m for the 300 m range If you measure 10 m, -10 m will be displayed.

Performing zero-adjustment

Red

SOURCE

SENSE

Red

Black

SOURCE

SENSE

Bring the "V" marks together at the same position.

Connection

SENSE A SENSE B

SOURCE A SOURCE B

L2104 (option)

L2101

L2102, L2103 (options)

Since zero-adjustment cannot be performed with the L2102 or L2103, use the L2101 Clip Type Lead or other lead type to perform zero-adjustment.

Place the alligator clips on the outside and the lead rods on the inside when performing zero-adjustment.

Correct

Incorrect

Short the measurement leads together.

4.1 Zero Adjustment

Proper wiring Improper wiring

[0ADJ] Perform zero-adjustment.

Switch the function menu to P.2/2.

Perform zero-adjustment and return to the Measurement screen.

Cancel the operation and return to the previous screen.

4.1 Zero Adjustment

Verify that the measured value is within ±3%f.s. If the zero-adjustment range

is set to NORMAL (-3%f.s. to 50%f.s.), zero-adjustment can be performed when the measured value is 50%f.s. or less in each range, but a warning will be issued when it is greater than 3%f.s.

If no measured value is displayed, verify whether the measurement leads have been wired properly.

Perform zero-adjustment.

A confirmation message will be displayed. Confirm and return to the Mea-

surement screen.

Zero Adjustment Faults

The Settings screen appears.

Switch the function menu to P.2/2.

Move the cursor to the [SYS] tab with the left and right cursor keys.

If zero adjustment fails, the following error message appears.

4.1 Zero Adjustment

Before attempting zero adjustment again, confirm the following:

• Verify that the measured value is within each range (NORMAL: -3%f.s. to 50%f.s.,

TIGHT: -3%f.s. to 3%f.s.).

• When using measurement leads that you made, reduce the wiring resistance.

• Confirm that the measurement leads connections are correct.

See: "*2 Current Fault Detection Function" (p. 39)

• If zero-adjustment fails for auto-ranging, zero-adjustment will be canceled for all ranges.

• If zero-adjustment fails for a manually set range, zero-adjustment will be canceled for the

current range.

Changing the zero-adjustment range

Although the default setting of the zero-adjustment range is -3%f.s. to 50%f.s. (the warning will be issued when the value is more than 3%f.s.), the zero-adjustment range can be changed to the setting that a value exceeding 3%f.s. results in an error without issuing any warning.

Open the Settings Screen.

Open the System Setting Screen.

Range: -3%f.s. to 3%f.s. Range: -3%f.s. to 50%f.s.

(default)

Selection

Return to the Measurement screen.

The Settings screen appears.

Switch the function menu to P.2/2.

Move the cursor to the [MEAS] tab with the left and right cursor keys.

4.1 Zero Adjustment

Select the zero-adjustment range setting function to be TIGHT.

Return to the Measurement screen.

The changed setting will be applied to the zero-adjustment that will be performed after the setting is changed. The zero-adjustment that has been already performed and panel-saved remains effective. Perform zero-adjustment again as necessary.

Canceling zero-adjustment

Cancels zero-adjustment for all ranges.

Open the Settings Screen.

Open the Measurement Settings Screen.

Select 0 ADJUST.

Cancel zero-adjustment.

Selection

Clear zero-adjustment and return to the Settings screen.

Cancel the operation and return to the previous screen.

Return to the Measurement screen.

4.1 Zero Adjustment

A confirmation message will be displayed. Confirm and return to the Mea-

surement screen.

Return to the Measurement screen.

The Settings screen appears.

Switch the function menu to P.2/2.

Move the cursor to the [MEAS] tab with the left and right cursor keys.

Enables the averaging function

Disables the averaging function (default) (go to step 5)

Selection

4.2 Stabilizing Measured Values (Averaging Function)

The averaging function averages multiple measured values and displays the results. It can be used to reduce variation in measured values.

For internal trigger measurement (Free-Run), a moving average is calculated. For external trigger measurement (and :READ? command operation) (Non-Free-Run), a mean average is used. For more information about communications commands, see the included application disc.

Average (of measurements D1 to D6) with Averaging Samples set to 2.

1st Sample 2nd Sample 3rd Sample

Free-Run (Moving Avg.) (D1+D2)/2 (D2+D3)/2 (D3+D4)/2

Non-Free-Run (Mean Avg.) (D1+D2)/2 (D3+D4)/2 (D5+D6)/2

Open the Settings Screen.

Open the Measurement Settings Screen.

Enable the averaging function.

Set the number of averaging iterations.

Move the cursor to the setting you wish to configure. Make the value editable with the key.

Move the cursor to the digit you wish to set with the left and right cursor keys. Change the value with the up and down cursor keys.

Change values.

Move among digits.

Setting range: 2 to 100 times (default: 2 times)

( Cancel)

Return to the Measurement screen.

4.2 Stabilizing Measured Values (Averaging Function)

The Settings screen appears.

Switch the function menu to P.2/2.

Move the cursor to the [MEAS] tab with the left and right cursor keys.

Enables the TC function

Disables the TC function (default) (go to step 5)

Selection

4.3 Correcting for the Effects of Temperature (Temperature Correction (TC))

Temperature correction converts resistance values to resistance values at standard temperature and displays the result.

For more information about the principle of temperature correction, see "Appendix 4 Tem- perature Correction (TC) Function" (p. A4). To perform temperature correction, connect the temperature sensor to the TEMP.SENSOR jack on the back of the instrument.

See: "2.3 Connecting Z2001 Temperature Sensor (When using the TC)" (p. 27)

Open the Settings Screen.

Open the Measurement Settings Screen.

Enable the temperature correction function. (TC)

4.3 Correcting for the Effects of Temperature (Temperature Correction (TC))

Setting range reference temperature : -10.0 to 99.9°C (default: 20°C) temperature coefficient : -9999 to 9999ppm/°C (default: 3930ppm/°C)

Move the cursor to the setting you wish to configure. Make the value editable with the key.

Move the cursor to the digit you wish to set with the left and right cursor keys. Change the value with the up and down cursor keys.

Change values.

Move among digits.

( Cancel)

Return to the Measurement screen.

Set the reference temperature and temperature coefficient.

(Set the reference temperature and temperature coefficient by following steps 1 through 3 for each.)

Return to the Measurement screen.

Range

Gain coefficient

(0.2000 to

1.9999)

×10

-3

(0.2000 to

1.9999)

×10

-2

(0.2000 to

1.9999)

×10

-1

(0.2000 to

1.9999) ×1

(0.2000 to

1.9999) ×10

(0.2000 to

1.9999)

×10

(0.2000 to

1.9999)

×10

30 m 00.000  000.00  0.0000 m 00.000 m 000.00 m 0.0000 00.000

300 m 000.00  0.0000 m 00.000 m 000.00 m 0.0000 00.000 000.00

3  0.0000 m 00.000 m 000.00 m 0.0000 00.000 000.00 0.0000 k

30  00.000 m 000.00 m 0.0000 00.000 000.00 0.0000 k 00.000 k

300  000.00 m 0.0000 00.000 000.00 0.0000 k 00.000 k 000.00 k

3 k 0.0000 00.000 000.00 0.0000 k 00.000 k 000.00 k 0.0000 M

30 k 00.000 000.00 0.0000 k 00.000 k 000.00 k 0.0000 M 00.000 M

300 k 000.00 0.0000 k 00.000 k 000.00 k 0.0000 M 00.000 M 000.00 M

3 M 0.0000 k 00.000 k 000.00 k 0.0000 M 00.000 M 000.00 M 0.0000 G

The Settings screen appears.

Switch the function menu to P.2/2.

4.4 Correcting Measured Values and Displaying Physical Properties Other than Resistance

4.4 Correcting Measured Values and Displaying Physical Properties Other than Resistance Values (Scaling Function)

This function applies a correction to measured values. It can be used to cancel the effects of the probing position or differences between measuring instruments, or to apply a userspecified offset as an alternative to zero-adjustment. In addition, units can be specified, allowing it to be used to convert measured values to physical properties other than resistance (for example, length).

Scaling is performed by means of the following equations:

RS = A × R + B

RS: Resistance value after scaling R : Measured value after zero-adjustment and temperature correction A : Gain coefficient Setting range: 0.2000 × 10 B : Offset Setting range: 0 to ±1 × 109 (maximum resolution: 1 n)

Displayed and sent/received measured values as well as the printer output format vary with the gain coefficient.

-3

to 1.9999 × 10

Open the Settings Screen.

Move the cursor to the [MEAS] tab with the left and right cursor keys.

Enables the scaling function

Disables the scaling function (default) (go to step 8)

Selection

Setting range: 0.2000×10-3 to 1.9999×10

It is not possible to set the exponent (E+3, etc.) directly. Use

and to multiply by 10

and 1/10 as necessary.

Move the cursor to the setting you wish to configure. Make the value editable with the key.

Move the cursor to the digit you wish to set with the left and right cursor keys. Change the value with the up and down cursor keys.

Change values.

Move among digits.

( Cancel)

Multiply by 10.

Multiply by 1/10.

Clear value.

4.4 Correcting Measured Values and Displaying Physical Properties Other than Resistance

Open the Measurement Settings Screen.

Enable the scaling function.

Set the gain coefficient.

It is not possible to set the exponent (E+3, etc.) directly. Use

and to multiply by 10

and 1/10 as necessary.

Move the cursor to the setting you wish to configure. Make the value editable with the key.

Move the cursor to the digit you wish to set with the left and right cursor keys. Change the value with the up and down cursor keys.

Change values.

Move among digits.

( Cancel)

Multiply by 10.

Multiply by 1/10.

Clear value.

Setting range: 0 to ±1×109 (maximum resolution: 1 n, default: 0)

Use  as the unit. (default) (go to step 8)

Eliminate the unit. (go to step 8)

Use a user-defined unit.

Selection

4.4 Correcting Measured Values and Displaying Physical Properties Other than Resistance

Set the offset.

Set the units for the displayed measured values.

Enter a number from 0 to 9 Enter a letter from A to z

Delete 1 character.

Move the cursor to the digit you wish to set with the left and right cursor keys. Change the value with the up and down cursor keys.

Change values.

Move among digits.

( Cancel)

Make the value editable with the

key.

Return to the Measurement screen.

4.4 Correcting Measured Values and Displaying Physical Properties Other than Resistance

Edit the unit as desired.

Return to the Measurement screen.

Scaling calculation is performed on measured values after zero-adjustment calculation. Consequently, measured values may not equal zero even after zero adjustment.

• If the calculation result exceeds the display range, the measured value will not be dis-

played at full scale. Example: If you set an offset of 9  for the 3  range  Values in excess of 1  will be displayed as OvrRng.

• If the calculation result is negative, the displayed value will be negative.

Example: If you set an offset of -50 m for the 300 m range  If you measure 30 m, -20 m will be displayed.

The Settings screen appears.

Switch the function menu to P.2/2.

Move the cursor to the [MEAS] tab with the left and right cursor keys.

5digits (35,000dgt.) (default)

4digits (3,500dgt.)

Selection

Return to the Measurement screen.

4.5 Changing the Number of Measured Value Digits

Open the Settings Screen.

Open the Measurement Settings Screen.

Select the number of measurement digits.

Return to the Measurement screen.

Judgment

Measured value > Upper limit value

Upper limit value  Measured value  Lower limit value

Measured value < Lower limit value

Function

This chapter explains measured value judgments (the comparator function). The comparator function provides the following capabilities:

• Displaying information on the instrument (COMP lamp Hi/IN/Lo)

• Sounding the beeper

(By default, the beeper is disabled.)

See: "Checking Judgments Using Sound (Judgment Sound Setting Function)"(p.68)

• Displaying data away from the instrument

The L2105 LED Comparator Attachment is an option.

See: "Checking Judgments with the L2105 LED Comparator Attachment (Option)"(p.70)

• Outputting judgment results to external equipment

See: "Chapter 8 External Control (EXT I/O)" (p. 89)

Moreover, the judgment timing can be delayed.

See: "Delaying the judge timing"(p.66)

Chapter 5

Select the REF% (relative values) judgment mode

Decide whether a measured value is within specified tolerance limits relative to a specified reference value (p. 64)

Select the ABS (absolute values) judgment mode

Decide whether a measured value is between specified upper and lower threshold values (absolute values) (p. 62)

12.000 k... reference value

±0.08% ....... positive/negative

tolerance

example

100.00 m . upper threshold

80.00 m ... lower threshold

example

Hi IN IN Lo

Positive tolerance [%]

Reference value []

Negative tolerance [%]

Upper threshold []

Lower threshold []

5.1 Judging Measured Values (Comparator Function)

The comparator judgment mode can be set as one of the following:

Before Using the Comparator Function

• The comparator judgment indicator will function as follows for over-range events

(“OvrRng” display) and measurement faults (“- - - - -” display):

See: "Confirming Measurement Faults"(p.38)

Measured value display Comparator Judgment Indicator

+OvrRng Hi

-OvrRng Lo

- - - - -

• If power is turned off during comparator setting, changes to settings are lost as they

revert to their previous values. To accept the settings, press the .

Off (no judgment)

5.1 Judging Measured Values (Comparator Function)

The Comparator Settings screen appears.

Switch the comparator function ON or OFF.

When the comparator function is OFF

Comparator judgments are indicated only when the comparator function is enabled.

When the comparator function is ON

Enabling and Disabling the Comparator Function

The comparator function is disabled by default. When the function is disabled, comparator settings are ignored.

Open the Comparator Settings screen.

Enable or disable the comparator function.

Return to the Measurement screen.

The range cannot be changed while using the comparator function. To change the range, do so with the and keys on the Comparator Settings screen. To use auto-ranging, turn OFF the comparator function.

Upper threshold

Lower threshold

Switch to ABS mode.

Select the range you wish to use. Change the decimal point position and unit (changes each time you press the button).

To Reset Numerical Values

Press to clear the upper limit value. The upper limit value will be reset to 0.

Move the cursor to the digit you wish to set with the left and right cursor keys. Change the value with the up and down cursor keys.

Change values.

Move among digits.

5.1 Judging Measured Values (Comparator Function)

Decide According to Upper/Lower Thresholds (ABS Mode)

Setting example: Upper threshold 150 m, lower threshold 50 m

To abort the setting process, press . Settings are abandoned and the display returns to the previous screen.

Open the absolute value threshold setting screen.

Set the range.

Set the positive tolerance.

5.1 Judging Measured Values (Comparator Function)

Set the negative tolerance in the same way.

Accept the settings and return to the Measurement screen.

Relative Value = (tolerance)

Reference

Value

Measured

Value

- 1

× 100 [%]

Display range: -999.99% to +999.99%

Reference value

Allowable range (upper and lower limit ranges relative to the reference value)

Select the range you wish to use. Change the decimal point position and unit (changes each time you press the button).

To Reset Numerical Values

Press to clear the reference value. The reference value will be reset to 0.

Move the cursor to the digit you wish to set with the left and right cursor keys. Change the value with the up and down cursor keys.

Change values.

Move among digits.

5.1 Judging Measured Values (Comparator Function)

Decide According to Reference Value and Tolerance (REF% Mode)

When REF% mode is enabled, the measured value will be displayed as an absolute value (%).

Example setting: Set a reference value of 100 m with

To abort the setting process, press . Settings are abandoned and the display returns to the previous screen.

Open the relative tolerance setting screen.

Set the range.

Set the reference value.

Pressing an inoperative key during setting sounds a low-pitch beep (when the key beeper is enabled).

±1% allowable range.

5.1 Judging Measured Values (Comparator Function)

To Reset Numerical Values

Press to clear the upper and lower limit values. The upper and lower limit values will be reset to 0.

Move the cursor to the digit you wish to set with the left and right cursor keys. Change the value with the up and down cursor keys.

Change values.

Move among digits.

Set the allowable range (upper and lower limit values).

Accept the settings and return to the Measurement screen.

Measurement Fault (“- - - - -”) is displayed

Measurement

order

Judge

1st 2nd 3rd 4th 5th 6th

1st

judgment

5th

judgment

6th

judgment

3rd

judgment

4th

judgment

2nd

judgment

Unjudged

Measurement Fault (“- - - - -”) is displayed

Judge

1st 2nd 3rd 4th 5th 6th

5th

judgment

6th

judgment

4th

judgment

Unjudged

Measurement

order

The Settings screen appears.

Switch the function menu to P.2/2.

Move the cursor to the [MEAS] tab with the left and right cursor keys.

5.1 Judging Measured Values (Comparator Function)

Delaying the judge timing

The judge timing can be delayed not to decide any judgment until a measurement value becomes stable.

Example when the judge delay function is set to OFF

Example when the judge delay function is set to ON and the number of unjudged measurements is three

Open the Settings Screen.

Open the Measurement Settings Screen.

5.1 Judging Measured Values (Comparator Function)

Enables the judge delay function

Disables the judge delay function (default) (go to step 5)

Selection

Move the cursor to the setting you wish to configure. Make the value editable with the key.

Move the cursor to the digit you wish to set with the left and right cursor keys. Change the value with the up and down cursor keys.

Change values.

Move among digits.

Setting range: 1 to 100 times (default: 1 times)

( Cancel)

Return to the Measurement screen.

Enable the judge delay function.

Set the the number of unjudged measurements.

Return to the Measurement screen.

• When the auto-hold function is set to ON, the judge delay function is automatically set to

OFF.

• For Non-Free-Run, the judge delay function is automatically set to OFF.

The Settings screen appears.

Switch the function menu to P.2/2.

Move the cursor to the [SYS] tab with the left and right cursor keys.

to Select the sound you desire.

Disable the beeper. (default) (go to step 5)

Selection

5.1 Judging Measured Values (Comparator Function)

Checking Judgments Using Sound (Judgment Sound Setting Function)

The comparator judgment beeper can be enabled and disabled. The judgment beeper is disabled (OFF) by default.

Separate judgment tones can be set for Hi, IN, and Lo judgments.

Open the Settings Screen.

Open the System Setting Screen.

Select the sound you desire for Hi judgments.

5.1 Judging Measured Values (Comparator Function)

Move the cursor to the setting you wish to configure.

To sound the beeper con-

tinuously

To set the number of beeps:

Change the number

of beeps.

Setting range: 1 to 5 times, continuous

Return to the Measurement screen.

Select the number of times to sound the beeper for Hi judgments.

Repeat this process to configure settings for IN and Lo judgments.

Return to the Measurement screen.

The volume cannot be adjusted. If the volume is too loud, cover the opening on the bottom of the instrument, for example with a piece of tape.

Attaching the LED Comparator Attachment

Position the LED Comparator Attachment where you wish.

Example: Using a tie band and two of the spiral wrappers that came with the L2105, attach the

LED Comparator Attachment to a measurement lead.

L2105 LED Comparator Attachment

L2101 Clip Type Lead

Spiral wrapper (small)

Spiral wrapper (large)

Tie band

Connecting the LED Comparator Attachment to the Instrument

Front Panel

L2105 LED Comparator Attachment

COMP.OUT jack

1 Confirm that the instrument's Main

power switch (rear panel) is OFF( ).

2 Plug the L2105 LED Comparator Attach-

ment into the COMP.OUT jack

on the

front panel.

Insert the plug securely all the way into the jack.

5.1 Judging Measured Values (Comparator Function)

Checking Judgments with the L2105 LED Comparator Attachment (Option)

By connecting the L2105 LED Comparator Attachment to the COMP.OUT jack, you can check judgment results easily at a distance from the instrument. The indicator will turn green for IN judgments and red for Hi and Lo judgments.

Connection Methods

Before connecting the LED Comparator Attachment, read "Operating Precautions"(p.5) carefully.

Saving and Loading Panels

(Saving and Loading Measurement Conditions)

Current measurement conditions can be saved and loaded using the panel load function from the key operations, communications commands, or EXT-I/O.

The instrument can save up to 10 sets of measurement conditions. Saved conditions are retained even when the instrument is turned off.

Settings that can be saved with the Panel Save function

• Panel name

• Resistance measurement range

• Measurement speed

• Averaging

• Comparator

• Comparator judgment beeper

• Scaling

• Temperature correction (TC)

• Auto-hold

• Zero-Adjust (Loading of these values can be disabled.)

Chapter 6

The Panel List Screen appears.

Save the conditions.

Selection

Enter a number from 0 to 9

Enter a letter from A to Z, or an underbar character ( _ ).

Delete 1 character.

Move the cursor to the character you wish to set with the left and right cursor keys. Change the character with the up and down cursor keys.

Change characters.

Move among characters.

( Cancel)

6.1 Saving Measurement Conditions (Panel Save Function)

Open the Panel List Screen.

Save the measurement conditions.

Enter the panel name.

(If you enter the number of a previously saved panel, a warning message will be displayed.)

The Panel List Screen appears.

Selection

Load the panel. (You can also load the panel with the key.)

Data saved for selected panel

Load the panel and switch to the Measurement screen (you can also do this with the key).

Cancel the operation and return to the previous screen. (you can also do this with the key)

The name of the loaded panel will be displayed on the Measurement screen.

6.2 Loading Measurement Conditions (Panel Load Function)

Loads the measurement settings saved by the Panel Save function. By default, loading a panel causes zero-adjustment values to be loaded. If you do not wish to load zero-adjustment values, see "Preventing Loading of Zero-adjustment Values"(p.74).

Open the Panel List Screen.

Select a panel number.

Verify that the confirmation message is shown and return to the Measurement

screen.

The Settings screen appears.

Switch the function menu to P.2/2.

Move the cursor to the [SYS] tab with the left and right cursor keys.

When a panel is loaded, change zero-adjustment values to the values in effect when the panel was saved. (default)

Do not change zero-adjustment values, even when panel data is loaded.

Selection

Return to the Measurement screen.

6.2 Loading Measurement Conditions (Panel Load Function)

• Panels can also be loaded with the EXT I/O LOAD0 to LOAD3 control and communica-

tions commands.

See: "Chapter 8 External Control (EXT I/O)"; "Input Signals" (p. 93)

For more information about commands, see the included application disc.

• If measurement conditions are changed after being loaded, the panel name will no longer

be displayed.

Preventing Loading of Zero-adjustment Values

By default, zero-adjustment values are also loaded along with panel data. The following procedure can be used to prevent loading of zero-adjustment values.

Open the Settings Screen.

Open the System Setting Screen.

Select whether to load zero-adjustment values.

Return to the Measurement screen.

6.3 Changing Panel Names

The Panel List Screen appears.

Selection

Edit the panel name.

Enter a number from 0 to 9

Enter a letter from A to Z, or an underbar character ( _ ).

Delete 1 character.

Move the cursor to the character you wish to set with the left and right cursor keys. Change the character with the up and down cursor keys.

Change characters.

Move among characters.

( Cancel)

Return to the Measurement screen.

Open the Panel List Screen.

Select a panel number.

6.3 Changing Panel Names

Edit the panel name.

Return to the Measurement screen.

The Panel List Screen appears.

Selection

Delete the panel.

Delete the panel and switch to the previous screen (you can also do this with the

key).

Cancel the operation and return to the previous screen. (you can also do this with the key)

Return to the Measurement screen.

6.4 Deleting Panel Data

Open the Panel List Screen.

Select a panel number.

Verify that the confirmation message is shown and return to the Measurement

screen.

Return to the Measurement screen.

Once a panel’s data is deleted, it cannot be restored (the delete operation cannot be undone).

System Settings Chapter 7

This chapter describes system settings.

"7.1 Disabling and Enabling Key Operations" (p. 78)

"7.2 Power Line Frequency Manual Setting" (p. 80)

"7.3 Enabling or Disabling the Key Beeper" (p. 82)

"7.4 Adjusting Screen Contrast" (p. 83)

"7.5 Adjusting the Backlight" (p. 84)

"7.6 Initializing (Reset)" (p. 85)

Key operations other than AUTO, RANGE , SPEED, COMP,

PANEL, 0ADJ, PRINT, ENTER (trigger) and MENU [UNLOCK] (key-lock

cancel) keys are disabled. To disable key operations: select [MENU] [M.LOCK] is displayed when returning to the measurement screen.

Disabling All Except Comparator Settings

Only basic settings (range, speed, comparator, panel load) are enabled.

All key operations except ENTER (trigger) and MENU [UNLOCK] (keylock cancel) are disabled. To disable key operations: select [FULL] [F.LOCK] is displayed when returning to the measurement screen.

Disabling All Key Operations Including Comparator Settings

Key operations to change settings are disabled (although key-lock can be canceled).

Asserting (ON) the EXT I/O KEY_LOCK signal disables all panel keys, including MENU [UNLOCK] (key-lock cancel) and MENU [LOCAL] (disables remote control). However, the ENTER (trigger) key remains enabled (p. 89). To cancel the key lock state: Turn OFF the EXT I/O KEY_LOCK signal. When you execute panel load operation by sending a LOAD signal, no key operation is available while the LOAD signal is being the on state. To enable key operation, switch the LOAD signal to the off state after the panel load is complete.

Disabling All Panel Keys

All key operations are disabled.

Display the Key Lock Selection screen.

Switch the function menu to P.2/2.

7.1 Disabling and Enabling Key Operations

Disabling Key Operations (Key-Lock Function)

Activate the key-lock function to disable the instrument’s front panel key operations. Three key-lock levels are available to suit specific purposes.

7.1 Disabling and Enabling Key Operations

Disable all except key-lock cancel and return to the Measurement screen.

Disable all except key-lock cancel and basic settings change and return to the Measurement screen.

Return to the Measurement screen.

Enable or disable key operations.

[UNLOCK] is displayed.

(Key-lock operation triggered by the EXT I/O KEY_LOCK signal is not displayed.)

Re-Enabling Key Operations (Key-Lock Cancel)

Key-lock can be canceled only when [UNLOCK] is displayed.

Press and hold [UNLOCK] for one second.

If key operations are disabled by the KEY_LOCK signal, de-assert (OFF) the signal to unlock the keys. When you execute panel load operation by sending a LOAD signal, no key operation is available while the LOAD signal is being the on state. To enable key operation, switch the LOAD signal to the off state after the panel load is complete.

The Settings screen appears.

Switch the function menu to P.2/2.

Move the cursor to the [SYS] tab with the left and right cursor keys.

7.2 Power Line Frequency Manual Setting

With the default setting (AUTO), the instrument attempts to automatically detect the line frequency, but manual setting is also available.

• Unless the line frequency is set correctly, measured values may be unstable.

An error message appears if line noise is high enough to prevent correct frequency detection (ERR:097 (p.169)). In that case, set the instrument’s line frequency manually.

• When the AUTO setting is selected, the line frequency is automatically set to 50 or 60 Hz

when the instrument is turned on or reset. However, automatic detection is not available when the line frequency changes after turning power on or resetting. If the actual line frequency deviates from 50 or 60 Hz, select the closest frequency.

Examples:

If the actual line frequency is 50.8 Hz, select the 50 Hz setting. If the actual line frequency is 59.3 Hz, select the 60 Hz setting.

Open the Settings Screen.

Open the System Setting Screen.

Select the line frequency being used.

Automatically detect local line frequency (default)

When the line frequency is 50 Hz

When the line frequency is 60 Hz

Selection

Return to the Measurement screen.

7.2 Power Line Frequency Manual Setting

The Settings screen appears.

Switch the function menu to P.2/2.

Move the cursor to the [SYS] tab with the left and right cursor keys.

Enables the beeper (default)

Disables the beeper

Selection

Return to the Measurement screen.

7.3 Enabling or Disabling the Key Beeper

The key beeper sound can be enabled and disabled. The key beeper is enabled (ON) by default.

Open the Settings Screen.

Open the System Setting Screen.

Select whether to enable or disable the key beeper.

Return to the Measurement screen.

(Version 2.00 and later only) To disable the key beeper, error beep, and auto-hold beep, turn off the instrument and then turn it back on while holding down the [F1] and [ENTER] keys. "( displayed as the KEY CLICK setting, and the error beep and auto-hold beep will be set to the same setting as the keep deeper.

ERR,AUTO HOLD)" will be

The Settings screen appears.

Switch the function menu to P.2/2.

Move the cursor to the [SYS] tab with the left and right cursor keys.

Decrease the contrast. Increase the contrast.

Selection

Setting range: 0 to 100%, 5% step

(default: 50%)

Return to the Measurement screen.

7.4 Adjusting Screen Contrast

The screen may become hard to see when ambient temperature changes. In this case, adjust the contrast.

Open the Settings Screen.

Open the System Setting Screen.

Adjust the contrast.

Return to the Measurement screen.

The Settings screen appears.

Switch the function menu to P.2/2.

Move the cursor to the [SYS] tab with the left and right cursor keys.

Selection

Decrease the backlight brightness.

Increase the backlight brightness.

Setting range: 0 to 100%, 5% step

(default: 80%)

Return to the Measurement screen.

7.5 Adjusting the Backlight

Adjust backlight brightness to suit ambient illumination.

• When external (EXT) triggering is selected, backlight brightness is automatically reduced

after non-operation for one minute.

(Version 2.00 and later only) To disable automatic dimming of the backlight, turn off the instrument and then turn it back on while holding down the [F1] and [ENTER] keys. The backlight will no longer be dimmed. If the key beeper is turned off while using this setting, the error beep and autohold beep will also be disabled.

See: (p.82)

• Be aware that the display may be hard to see when brightness is set too low (near 0%).

Open the Settings Screen.

Open the System Setting Screen.

Adjust the backlight.

Return to the Measurement screen.

The Settings screen appears.

Switch the function menu to P.2/2.

Move the cursor to the [SYS] tab with the left and right cursor keys.

7.6 Initializing (Reset)

Two reset functions are available. For more information about communications commands, see the included application disc.

Reset: Returns measurement conditions (except the panel data) to factory defaults.

The instrument can be reset by three methods.

• Reset from the System setting screen

• Turn on the instrument while holding down and .

• Reset by remote control command

∗RST command (Interface settings are not initialized.)

System reset: Returns all measurement conditions and the panel save data to factory

The instrument can be system reset by three methods.

• System reset from the System setting screen

• Turn on the instrument while holding down , , and .

• Reset by remote control command

:SYSTem:RESet command (Interface settings are not initialized.)

This procedure describes reset from the System setting screen.

Open the Settings Screen.

Open the System Setting Screen.

defaults.

Selection

Perform a reset. Perform a system reset.

Cancel the operation

Execute

7.6 Initializing (Reset)

Select RESET.

Select whether to initialize the instrument.

The Measurement screen is displayed when system reset finishes.

7.6 Initializing (Reset)

Default Settings

Screen Setting and Key Default Settings See

Measurement screen COMP OFF (p.61)

Measurement screen (P.1/2)

Measurement screen (P.2/2)

Setting screen (SETTING)

Measurement Settings screen (MEAS)

System Settings screen (SYS)

EXT I/O Settings screen

(I/O)

Communications Interface Settings screen

(IF)

AUTO ON

 (RANGE) 3M

SPEED SLOW (p.33)

VIEW (F2) OFF (p.35)

0 ADJ (F1) OFF

LOCK (F2) OFF

TC SET OFF (p.52)

AVERAGE OFF (p.50)

AUTO HOLD OFF (p.41)

COMP DELAY OFF (p.66) SCALING(A∗R+B) OFF

A: +1.0000E+0

B: +0.0000E+0 UNIT: 

 DIGITS 5DGT (p.58)

CURR ERROR MODE CurErr (p.40)

KEY CLICK ON (p.82)

COMP BEEP Hi OFF

Lo OFF

PANEL LOAD 0ADJ ON (p.74)

0ADJ RANGE NORMAL (p.47)

CONTRAST 50 (p.83)

BACKLIGHT 80 (p.84)

POWER FREQ AUTO (p.80)

TRIG SOURCE INT (p.109)

TRIG EDGE OFF  ON (ON EDGE) (p.111)

TRIG/PRINT FILT OFF (p.113)

EOM MODE HOLD (p.115)

JUDGE/BCD MODE JUDGE (p.117)

INTERFACE RS232C (p.123)

SPEED 9600bps (p.126)

DATA OUT OFF (p.133)

CMD MONITOR OFF (p.131)

PRINT INTRVL OFF (p.142)

PRINT COLUMN 1LINE (p.141)

(p.32)

(p.44)

(p.78)

(p.54)

(p.68)IN OFF

*1 RM3544-01 only

7.6 Initializing (Reset)

External Control

Signal input/output

(EXT I/O)

The EXT I/O connector on the rear of the instrument supports external control by providing output of the EOM and comparator judgment signals, and accepting input of TRIG and KEY_LOCK signals. All signals are isolated from the measurement circuit and ground (I/O common pins are shared). Input circuit can be switched to accommodate either current sink output (NPN) or current source output (PNP).

Confirm input and output ratings, understand the safety precautions for connecting a control system, and use accordingly.

Check the controller’s I/O specifications.

Set the instrument’s NPN/PNP switch. (p.90)

Chapter 8

Connect the instrument’s EXT I/O connector to the controller. (p.91)

Make instrument settings. (p. 109)

Left: Current sink (NPN) Right: Current source (PNP)

8.1 External Input/Output Connector and Signals

Switching between Current Sink (NPN) and Current Source (PNP)

Before switching, see "Before Switching between Current Sink (NPN) and Current Source (PNP)" (p. 11).

The NPN/PNP switch allows you to change the type of programmable controller that is supported. The instrument ships with the switch set to the NPN position.

See: "8.3 Internal Circuitry"(p.104)

NPN/PNP switch setting

NPN PNP

RM3544 input circuit Supports sink output. Supports source output.

RM3544 output circuit Non-polar Non-polar

ISO_5V output +5 V output -5 V output

EXT I/O Connector (Instrument Side)

Connector: (Instrument Side)

37-pin D-sub female with #4-40 screws

Mating Connectors:

DC-37P-ULR (solder type) / DCSP-JB37PR (pressure weld type) Japan Aviation Electronics Industry Ltd.

12345678910111213141516171819

202122232425262728293031323334353637

TRIG, IN0

BCD_LOW

KEY_LOCK

LOAD1

LOAD3

(Reserved)

ISO_5V

ISO_COM

ERR

HI, HILO

LO, BCD2-1, RNG_OUT1

BCD2-3, RNG_OUT3

BCD3-1

BCD3-3

BCD4-1

BCD4-3

OUT0, BCD5-1, BCD1-1

OUT2, BCD5-3, BCD1-3

0ADJ

(Reserved)

LOAD0

LOAD2

(Reserved)

PRINT, IN1

ISO_COM

EOM

INDEX, BCD2-0, RNG_OUT0

BCD2-2, RNG_OUT2

BCD3-0

BCD3-2

BCD4-0

BCD4-2

BCD5-0, BCD1-0

OUT1, BCD5-2, BCD1-2

8.1 External Input/Output Connector and Signals

Connector Type and Signal Pinouts

Before connecting a connector, see "Before Connecting EXT I/O" (p. 11). Use of EXT I/O enables the following control functionality:

• Measurement start (TRIG)  Measurement end (EOM, INDEX)

 Acquisition of judgment results (HI, IN, LO, ERR)

• Measurement start (TRIG)  Measurement end (EOM, INDEX)

 Acquisition of measured values (BCD_LOW, BCDm_n, RNG_OUTn)

• Panel load (LOAD0 to LOAD3, TRIG)

• General-purpose I/O (IN0, IN1, OUT0, OUT1, OUT2)

The functionality described in "Performing an I/O Test (EXT I/O Test Function)" (p. 118) provides a convenient way to check external I/O operation.

TRIG

IN0

2 BCD_LOW IN

3 KEY_LOCK IN Key-Lock Level 22 LOAD0 IN Panel load Level

4 LOAD1 IN Panel load Level 23 LOAD2 IN Panel load Level

Pin Signal name I/O Function Logic Pin Signal name I/O Function Logic

External trigger

General-pur-

pose input

Edge 20 0ADJ IN Zero adjust Edge

BCD

Lower byte

Level 21 (Reserved) - - -

output

8.1 External Input/Output Connector and Signals

Pin Signal name I/O Function Logic Pin Signal name I/O Function Logic

5 LOAD3 IN Panel load Level 24 (Reserved) - - -

6 (Reserved) - - - 25 (Reserved) - - -

7(Reserved) - - - 26

Isolated power

8ISO_5V

9ISO_COM -

10 ERR OUT

11 HI, HILO OUT

14 BCD3-1 OUT BCD Level 33 BCD3-2 OUT BCD Level

15 BCD3-3 OUT BCD Level 34 BCD4-0 OUT BCD Level

16 BCD4-1 OUT BCD Level 35 BCD4-2 OUT BCD Level

17 BCD4-3 OUT BCD Level 36

LO,

BCD2-1,

RNG_OUT1

BCD2-3,

RNG_OUT3

OUT0,

BCD5-1,

BCD1-1

OUT2,

BCD5-3,

BCD1-3

appli-

supply +5 V

cable

(-5 V) output

Isolated

common signal

ground

Measurement

fault

Comparator

judgment

Comparator

OUT

OUT BCD Level 32 BCD3-0 OUT BCD Level

OUT

judgment

BCD

General-pur-

pose output

BCD

General-pur-

pose output

BCD

-27ISO_COM -

-28 EOM OUT

Level 29

Level 30 IN OUT

Level 31

Level 37

Level

IN1

INDEX,

BCD2-0,

RNG_OUT0

BCD2-2,

RNG_OUT2

BCD5-0,

BCD1-0

OUT1,

BCD5-2,

BCD1-2

OUT

OUT BCD Level

OUT

Printing of

measured values

General-pur-

pose input

Isolated

common signal

ground

End of

measurement

Analog

measurement

finished

Comparator

judgment

General-pur-

pose output

Edge

Level

BCD

• The 0ADJ signal should be asserted (ON) for at least 10 ms.

• The connector's frame is connected to the instrument's rear panel (metal portions) as well

as the power inlet's protective ground terminal. When switching panel load operation using commands or key operation, fix pins 4 and 5 as well as 22 and 23 to ON or OFF.

Hioki RM3544-01 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

Contents

Introduction

Verifying Package Contents

Safety Information

Operating Precautions

1.1 Product Overview and Features

Overview Chapter 1

1.2 Names and Functions of Parts

1.3 Measurement Process

1.4 Screen Organization and Operation Overview

2.1 Connecting the Power Cord

2.2 Connecting Measurement Leads

2.3 Connecting Z2001 Temperature Sensor (When using the TC)

2.4 Turning the Power On and Off

Turning On the Instrument with the Main Power Switch

Turning Off the Instrument with the Main Power Switch

Canceling the Standby State

Placing the Instrument in the Standby State

2.5 Pre-Operation Inspection

Basic Measurements

3.1 Selecting the Measurement Range

3.2 Setting the Measurement Speed

3.3 Connecting Measurement Leads to the Measurement Target

3.4 Checking Measured Values

Switching the Display

Confirming Measurement Faults

Holding Measured Values

4.1 Zero Adjustment

4.2 Stabilizing Measured Values (Averaging Function)

4.3 Correcting for the Effects of Temperature (Temperature Correction (TC))

4.4 Correcting Measured Values and Displaying Physical Properties Other than Resistance Values (Scaling Function)

4.5 Changing the Number of Measured Value Digits

5.1 Judging Measured Values (Comparator Function)

Enabling and Disabling the Comparator Function

Decide According to Upper/Lower Thresholds (ABS Mode)

Decide According to Reference Value and Tolerance (REF% Mode)

Delaying the judge timing

Checking Judgments Using Sound (Judgment Sound Setting Function)

Checking Judgments with the L2105 LED Comparator Attachment (Option)

6.1 Saving Measurement Conditions (Panel Save Function)

6.2 Loading Measurement Conditions (Panel Load Function)

Preventing Loading of Zero-adjustment Values

6.3 Changing Panel Names

6.4 Deleting Panel Data

System Settings Chapter 7

7.1 Disabling and Enabling Key Operations

Disabling Key Operations (Key-Lock Function)

Re-Enabling Key Operations (Key-Lock Cancel)

7.2 Power Line Frequency Manual Setting

7.3 Enabling or Disabling the Key Beeper

7.4 Adjusting Screen Contrast

7.5 Adjusting the Backlight

7.6 Initializing (Reset)

Default Settings

8.1 External Input/Output Connector and Signals

Switching between Current Sink (NPN) and Current Source (PNP)

Connector Type and Signal Pinouts