Hioki RM3543 User manual

RM3543
RM3543-01
Instruction Manual
RESISTANCE HiTESTER
EN
Sept. 2020 Revised edition 4
RM3543A981-04 20-09H
Be sure to read this manual before using the instrument. p.5
When using the instrument for the
rst time Troubleshooting
Names and Functions of Parts p.15 Maintenance and Service p.183
Measurement Preparations p.21 Error Displays and Remedies p.185
HIOKI RM3543A981-04

HIOKI RM3543A981-04

Contents
i
Contents
Task-Oriented Reference ............................... 1
Measurement Flow......................................... 2
Introduction..................................................... 3
Verifying Package Contents ........................... 3
Safety Information .......................................... 5
Operating Precautions.................................... 7
Chapter 1 Overview 11
1.1 Product Overview and Features ........ 11
Block Diagram ..........................................14
1.2 Names and Functions of Parts ...........15
1.3 Screen Organization .......................... 17
Chapter 2 Measurement
Preparations 21
2.1 Connecting the Power Cord ............... 22
2.2 Connecting Measurement Cables and
Test Fixtures ...................................... 23
Making Your Own Measurement Cables ..24
2.3 Turning the Power On and Off ........... 26
Chapter 3 Measurement
Settings (Basic
Measurements) 27
3.1 Pre-Operation Inspection ................... 27
3.2 Switching 100 mrange Measurement
Currents ............................................. 28
3.3 Setting the Measurement Speed ....... 29
3.4 Setting Measurement Start Conditions
(Trigger Source) ................................. 30
3.5 Selecting the Measurement Range .... 31
3.6 Zero Adjustment ................................. 32
3.7 Judging Measured Values
(Comparator Function) ....................... 34
Enabling and Disabling the Comparator
Function ....................................................35
Decide According to Reference Value and
Tolerance (REF% Mode) ..........................35
Decide According to Upper/Lower Thresholds
(ABS Mode) ............................................. 37
3.8 Confirming Faulty Measurements ......38
Chapter 4 Customizing
Measurement
Settings 41
4.1 Making Range-Specific Measurement
Settings ..............................................41
4.2 Setting Pre-Measurement Delay ........42
4.3 Correcting Measured Values
(Scaling Function) ..............................44
4.4 Setting the Measurement Integration
Time Option ........................................46
4.5 Stabilizing Measured Values
(Averaging Function) ..........................48
4.6 Checking for Poor or Improper Contact
(Contact Check Function) ...................49
4.7 Improving Probe Contact
(Contact Improver Function) ...............50
4.8 Detecting Measurement Voltage Faults
(Voltage Level Monitor Function) .......52
4.9 Applying Current Only When Measuring
(Current Mode Setting) .......................53
4.10 Test for Short-Circuited Probe
(Probe Short-Circuit Detection Function)
............................................................54
4.11 Comparing the Measurement Settings of
Two Instruments
(Settings Monitor Function) ................ 56
4.12 Retrying Measurement After a Fault
(Retry Function) ..................................59
4.13 Maintaining Measurement Precision
(Self-Calibration) ................................60
4.14 Compensating for Thermal EMF Offset
(Offset Voltage Compensation - OVC) 61
Chapter 5 System Settings 63
5.1 Disabling and Enabling Key Operations
...........................................................63
Disabling Key Operations
(Key-Lock Function) ................................. 63
RM3543A981-04
HIOKI RM3543A981-04

Contents
ii
Re-Enabling Key Operations
(Key-Lock Cancel) ................................... 64
5.2 Setting the Comparator Decision and
Key Beepers .......................................65
Enabling or Disabling the Key Beeper ..... 65
Setting the Comparator Decision (“JUDGE”)
Beeper ..................................................... 66
5.3 Power Line Frequency Manual Setting
...........................................................67
5.4 Setting the Clock ................................68
5.5 Adjusting Screen Contrast ..................69
5.6 Adjusting the Backlight .......................70
5.7 Initializing (Reset) ...............................71
Default Settings ........................................ 72
Chapter 6 Storing and
Exporting Data 73
6.1 Storing Data at Specific Times
(Data Memory Function) .....................74
6.2 Store as soon as Measurement is Stable
(Auto-Memory Function) ....................75
6.3 Performing Statistical Calculations on
Measured Values ...............................78
Using Statistical Calculations ................... 79
Confirming, Printing, and Erasing Calculation
Results ..................................................... 80
6.4 Auto-Exporting Measured Values (at End
of Measurement) (Data Output Function)
............................................................81
Chapter 7 Printing 83
7.1 Connecting the Printer ........................83
Connecting the Printer to the Instrument . 84
7.2 Instrument Settings ............................85
7.3 Printing ...............................................86
Printing Measured Values and Comparator
Decisions ................................................. 86
Printing Statistical Calculation Results ..... 86
Chapter 8 External Control 89
8.1 External Input/Output Connector
and Signals......................................... 89
Connector Type and Signal Pinouts ........ 90
Signal Descriptions .................................. 91
8.2 Timing Chart ...................................... 92
8.3 Internal Circuitry ................................. 94
Electrical Specifications ........................... 95
Connection Examples .............................. 96
8.4 External I/O Settings .......................... 97
Setting End-of-Measurement Signal Output
(EOM Signal Setting) ............................... 97
Setting the Trigger (TRIG) Signal Logic ... 98
8.5 External Control Q&A ........................ 99
8.6 Supplied Connector Assembly ......... 100
Chapter 9 Communications
(RS-232C/ GP-IB
Interface) 101
9.1 Overview and Features .................... 101
9.2 Specifications ................................... 102
9.3 Connecting ....................................... 103
Using the RS-232C Interface ................. 103
Using the GP-IB Interface
(RM3543-01 only) .................................. 104
9.4 Configuring the Communications
Protocol ............................................ 105
Configuring RS-232C Interface
Communications .................................... 105
Configuring GP-IB Interface Communications
(RM3543-01 only) .................................. 106
Select the Measurement Data Transmission
Format (both RS-232C and GP-IB) ........ 107
9.5 Communication Methods ................. 108
To cancel the Remote state
(enter the local state) ............................. 108
Message Format .................................... 109
Output Queue and Input Buffer .............. 112
Status Byte Register .............................. 113
Event Registers ...................................... 115
Initialization Items ................................... 118
Command Execution Time ..................... 119
Errors During Communications .............. 119
9.6 Message List .................................... 120
Standard Commands ............................. 120
Device-Specific Commands ................... 121
9.7 Message Reference ......................... 126
Message Reference Interpretation ......... 126
Standard Commands ............................. 127
Device-Specific Commands ................... 131
9.8 Data Exporting Methods .................. 152
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Contents
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9.9 Sample Programs ............................ 154
Using Visual Basic 5.0 or 6.0 ..................154
Creation Procedure (Visual Basic 2005) .164
Sample Programs (Visual Basic 2005) ...166
9.10 Device Compliance Statement......... 168
Chapter 10 Specifications 171
Chapter 11 Maintenance and
Service 183
11.1 Troubleshooting ............................... 183
Inspection and Repair .............................183
11.2 Cleaning ........................................... 184
11.3 Error Displays and Remedies .......... 185
11.4 Disposing of the Instrument ............. 187
Removing the Lithium Battery .................187
Appendix A 1
Appendix 1 Four-Terminal (Voltage-Drop)
Method......................................A 1
Appendix 2 Effect of Thermal emf ...............A 2
Appendix 3 Unstable Measurement Values.A 3
Appendix 4 Effects of Probing .....................A 9
Appendix 5 Rack Mounting........................A 11
Appendix 6 Dimensional Diagram .............A 13
Appendix 7 Calibration...............................A 14
Appendix 8 Adjustment Procedure ............A 16
Appendix 9 Table of Commands Compatible
with the ADEX AX-1152D.......A 17
Appendix 10Zero Adjustment....................A 19
Index Index 1
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Contents
iv
HIOKI RM3543A981-04

Task-Oriented Reference
1
Task-Oriented Reference
To minimize measurement error
Setting the measurement speed (p. 29)
Setting the averaging function (p. 48)
Setting the measurement speed integration time option (p. 46)
Correcting measured values (p. 44)
Zero-adjustment (p. 32)
To judge measurement results
Judge measured values (comparator function) (p. 34)
Compare the measurement settings of two instruments
(Settings Monitor function) (p. 56)
To correct faulty measurements
Confirm faulty measurement (p. 38)
Improve probe contact (Contact Improver function) (p. 50)
Test for short-circuited probe (probe short-circuit detection
function) (p. 54)
Compare the measurement settings of two instruments
(Settings Monitor function) (p. 56)
To automatically store measured
values
Store as soon as measurement is stable
(Auto Memory function) (p. 75)
To print measurement results Printing (p. 83)
To measure by PLC connection
(PLC: Programmable Logic Controller)
External control (p. 89)
Communications (RS-232C/GP-IB interface) (p. 101)
To connect to a computer Communications (RS-232C/GP-IB interface) (p. 101)
To automatically send measure-
ment data to a computer
(RS-232C interface only)
Export measurement values automatically
(when finished measuring) (p. 81)
To check operation
Setting Measurement Start Conditions (Trigger Source) (p. 30)
Internal trigger (INT)
Calibration (p. A14)
HIOKI RM3543A981-04

Measurement Flow
2
Be sure to read the "Operating Precautions" (p. 7) before use.
Measurement Flow
Installing, Connecting and Turning On
Computer
communications
(p. 101)
Printing (p. 83)
External control
(p. 89)
EXT I/O
RS-232C
GP-IB
Compare the settings of two instruments
(p. 56)
SET MONITOR
Connecting the Power Cord (p. 22)
Turn the power on (p. 26)
Connect (p. 21)
Install (p. 7)
Connect the measurement cables (p. 23)
Settings
Set measurement
conditions (as needed)
Confirm the screen configuration
(p. 17)
Confirm the initial setup (p. 72)
•Basic Settings (p. 27)
•Configure settings for your
specific conditions (p. 41)
•System-related settings
(p. 63)
When changing settings
Change basic settings such
as measurement speed
Change to detailed settings
(measurement conditions
and system-related)
Set decision criteria
(p. 34)
Calculation, Printing, Communication, and External Control Settings
Data transmission (p. 81) Printing (p. 83)
Computer communications
(p. 101) External control (p. 89)
Statistical calculations
(p. 78)
Instrument interface settings must be
configured before printing or using
communications or remote control.
When Finished
Turn the power off (p. 26)
HIOKI RM3543A981-04

Introduction
3
Thank you for purchasing the HIOKI Model RM3543/ RM3543-01 Resistance HiTester.
To obtain maximum performance from the instrument, please read this manual first, and keep
it handy for future reference.
Model RM3543-01 is the same as the RM3543, but with GP-IB included.
Registered trademarks
• Microsoft, Windows and Visual Basic are eitherregistered trademarks or trademarks of
Microsoft Corporation in the UnitedStates and other countries.
• Other products and company names are trade names, registered trademarks, or trade-
marks of their respective owners.
Inspection
Content confirmation
Introduction
Verifying Package Contents
When you receive the instrument, inspect it carefully to ensure that no damage occurred during ship-
ping. 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 dealer or Hioki representative.
Confirm that these contents are provided.
Model RM3543 or
RM3543-01 (with GP-IB included) ...............1
Power Cord (2-line + ground)(p. 22)
EXT I/O Male Connector (p. 100)
Instruction Manual (This document)............ 1
Operation Guide.......................................... 1
HIOKI RM3543A981-04

Verifying Package Contents
4
Options
The following options are available for the instrument. Contact your authorized Hioki distributor or reseller
when ordering.
The options are subject to change. Visit our website for updated information.
Measurement Probes and Fixtures
(connect to measurement jacks)
Model 9140 4-terminal Probe
Model 9500 4-terminal Probe
Model 9262 Test Fixture
Model 9263 SMD Test Fixture
Alligator-clip-typemeasurement
probes. These general-purpose
dual-electrode clips fit a wide
range of conductor thicknesses.
Rubber-sheathed alligator-clip-
type measurement probes. This
design is ideal for 4-terminal-
pair resistance measurement
applications, for example mea-
suring standard resistors
This fixture is for measuring lead
components. (less than 10 m
residual resistance after zero
adjustment)
This fixture is for measuring chip
components. (less than 10 m
residual resistance after zero
adjustment)
Interface Cables
Model 9637 RS-232C Cable
(9-pin to 9-pin/ crossover cable)
Model 9638 RS-232C Cable
(9-pin to 25-pin/ crossover cable)
Model 9151-02 GP-IB Connector Cable (2m)
HIOKI RM3543A981-04

Safety Information
5
This manual contains information and warnings essential for safe operation of the instrument and for main-
taining it in safe operating condition. Before using it, be sure to carefully read the following safety precautions.
The following symbols in this manual indicate the relative importance of cautions and warnings.
Safety Information
This instrument is designed to comply with IEC 61010 Safety Standards, and has been
thoroughly tested for safety prior to shipment. However, mishandling during use
could result in injury or death, as well as damage to the instrument. Using the instru-
ment in a way not described in this manual may negate the provided safety features.
Be certain that you understand the instructions and precautions in the manual before
use. We disclaim any responsibility for accidents or injuries not resulting directly
from instrument defects.
Safety Symbols
Indicates the need for caution or the presence of danger. For more information about locations where
this symbol appears on instrumen components, see the "Operating Precautions" (p. 7), warning mes-
sages listed at the beginning ofoperating instructions.
Indicates AC (Alternating Current).
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 instru-
ment.
Indicates advisory items related to performance or correct operation of the instrument.
Symbols for Various Standards
This symbol indicates that the product conforms to regulations set out by the EC 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 Arti-
cle 11.2 of Directive 2002/96/EC (WEEE).
HIOKI RM3543A981-04

Safety Information
6
Accuracy
We define measurement tolerances in terms of f.s. (full scale), rdg. (reading) and dgt. (digit) values, with the following mean-
ings.
Other Symbols
Indicates a prohibited action.
(p. ) Indicates the location of reference information.
*Indicates that descriptive information is provided below.
[ ] Square brackets indicate instrument display labels (such as setting item names).
SET
(Bold characters) Bold characters within the text indicate operating key labels.
Unless otherwise specified, “Windows” represents Windows 95, 98, Me, Widows NT4.0, Windows 2000,
Windows XP, or Windows Vista.
Click: Press and quickly release the left button of the mouse.
Double click: Quickly click the left button of the mouse twice.
f.s. (maximum display value)
The maximum displayable value. This is usually the name of the currently selected range.
rdg. (reading or displayed value)
The value currently being measured and indicated on the measuring instrument.
dgt. (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.
HIOKI RM3543A981-04

Operating Precautions
7
Follow these precautions to ensure safe operation and to obtain the full benefits of the various
functions.
• 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
dealer or Hioki representative.
• Before using the instrument make sure that the insulation on the power cord is undamaged
and that no bare conductors are improperly exposed. Using the instrument in such condi-
tions could cause an electric shock, so contact your dealer or Hioki representative for
repair.
• Before using the instrument, make sure that the insulation on the measurement cables is
undamaged and that no bare metal is improperly exposed. If there is any damage, mea-
sured values may be unstable and measurement errors may occur.
Storage temperature and humidity : -10°C to 50°C at 80% RH or less (non-condensating)
Operating temperature and humidity : 0 to 40°C at 80% RH or less (non-condensating)
Installation Precautions
• The instrument should be operated only with the bottom downwards.
• Do not place the instrument on an unstable or slanted surface.
•Vents must not be obstructed.
Operating Precautions
Preliminary Checks
Instrument Installation
Avoid the following locations that could cause an accident or damage to the instrument.
Exposed to direct sunlight
Exposed to high tempera-
ture
In the presence of corrosive or ex-
plosive gases
Exposed to water, oil, other
chemicals, or solvents
Exposed to high humidity
or condensation
Exposed to strong electromag-
netic fields
Near electromagnetic radiators
Exposed to high levels of
particulate dust
Near induction heating systems
(e.g., high-frequency induction
heating systems and IH cooking
utensils)
Subject to vibration
The instrument can be used with the stand (p. 16).
It can also be rack-mounted. (p. A11).
50 mm or more 10 mm or more
Rear
50 mm or more 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.
HIOKI RM3543A981-04

Operating Precautions
8
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.
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 pre-
vent interference to the reception of radio and television broadcasts.
Handling the Cords and Probes
• Avoid stepping on or pinching cables, which could damage the cable insulation.
• To avoid breaking the cables, 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.
• When disconnecting the BNC connector, be sure to release the lock before pulling off the
connector. Forcibly pulling the connector without releasing the lock, or pulling on the cable,
can damage the connector (p. 23).
• Use only the specified connection cables. Using a non-specified cable may result in incor-
rect measurements due to poor connection or other reasons.
• Before using a test fixture, read the instructions provided with it.
Before Turning Power On
Before turning the instrument on, make sure the supply voltage matches that indi-
cated on its power connector. Connection to an improper supply voltage may damage
the instrument and present an electrical hazard.
HIOKI RM3543A981-04

Operating Precautions
9
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 power to the instrument and to any devices to be connected
before making connections.
•Be careful to avoid exceeding the ratings of external terminals (p. 95).
•During operation, a wire becoming dislocated and contacting another conductive
object can be serious hazard. Use screws to secure the external connectors.
•Ensure that devices and systems to be connected to the EXT I/O terminals are prop-
erly isolated.
•The ISO_5V pin of the EXT I/O connector is a 5 V power output, and the ISO_12V pin
is a 12 V power output. Do not apply external power to this pin.
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-electromotive force.
• Be careful not to short-circuit ISO_5V to ISO_COM.
• Be careful not to short-circuit ISO_12V to ISO_COM.
• Do not draw loads from ISO_5V and ISO_12V at the same time.
See: "Connector Type and Signal Pinouts" (p. 90)
Before Measuring
• Do not apply any voltage to the measurement jacks. Doing so could damage the instru-
ment.
• Never attempt to measure at a point where voltage is present. In particular, do not measure
a transformer or motor immediately after a temperature increase test or withstand-voltage
test, as the instrument could be damaged by induced voltage or residual charge.
• 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.
• To obtain the guaranteed measurement accuracy, allow at least 30 minutes warm-up.
• The instrument internally retains all settings (but not measured values), such as measure-
ment range and comparator settings. However, measurement settings made through the
RS-232C or GP-IB interface are not memorized.
• The DC resistance of a power transformer cannot be measured. Do not measure objects
with a large L (100 H or higher in the 10 mto 100 range, or 10 H or higher in the
1,000 range), such as choke coils and other inductors. In such cases, contact your
dealer or Hioki representative.
• You may be unable to obtain accurate measured values when there is a capacitance com-
ponent in parallel with the measurement target. For this instrument, any parallel capaci-
tance component should be limited to a maximum of 1,000 pF.
• Carefully insulate all HCUR, HPOT, LPOT, and LCUR wiring. Proper 4-terminal measurements
cannot be performed and an error will occur if core and shield wires touch.
• During measurement, a transient current equal to about 1.5 times the steady-state current
will flow for several microseconds (or about 10 mApk in the 1 krange). Exercise special
care when measuring targets whose characteristics are prone to vary.
HIOKI RM3543A981-04

Operating Precautions
10
HIOKI RM3543A981-04

1.1 Product Overview and Features
11
1
Overview Chapter 1
1.1 Product Overview and Features
The Hioki RM3543 Resistance HiTester employs the 4-terminal method to quickly and accurately measure
the DC resistance of components such as resistors and current sensing resistors. It includes advanced con-
tact-check, comparator, and data output functions. The intuitive user interface and high noise immunity are
ideal for use with taping machines and separators.
Resistance Measurement
The factory defaults (initial settings)
are optimized for current sensing re-
sistors measurements.
Interface
Communications
Connect the instrument to a
controller via the RS-232C
or GP-IB interface to control
measurement data acquisi-
tion (p. 101).
Send Measurement Data and
Calculation Results to a
Printer
Use a commercially available print-
er with a serial interface to print
measured values and calculation
results (p. 83).
Save and Output Measured
Values
Measured values can be stored in
internal memory (p. 73)
Statistical calculations can be per-
formed on the stored data, which
can be transferred to a computer in
batch form (however, stored data
cannot be confirmed internally).
Judge Measured Values
Measured values are compared
with a pre-specified reference value
or thresholds, and the result is out-
put externally and indicated by the
COMP indicators (comparator func-
tion, p. 34).
Connect a PLC or
I/O Board
To control from a PLC, con-
nect to the EXT I/O connec-
tor. In addition to comparator
results, various measurement
anomaly signals can be out-
put (p. 89).
Upper limit
Lower limit
Compare Two Instrument’s
Setting Conditions
When measuring with two inter-
connected instruments, settings
are compared, and an alarm is
output and measurement is inhib-
ited if the settings differ (Settings
Monitor function, p. 56).
Optional Hioki probes and fixtures
are available to connect to the mea-
surement jacks (BNC jacks, p. 4).
Alternatively,
commercially
available cables
such as 1.5D-2V
coax can be used
(p. 24).
HIOKI RM3543A981-04

1.1 Product Overview and Features
12
Ultra Fast and Accurate Measurements
Increase Productivity
The RM3543 is ideally suited for use in testing current
sensing resistors, where there has been remarkable
progress in lowering resistance values.
Measurement from which the effects of thermal EMF
are consistently eliminated (by the OVC function)
yields a resolution of 0.01 in the 10 mrange.
Since measurement results are obtained by means of
a PASS/FAIL judgment process with a resolution of
0.001%, the instrument can test resistors of 1 mand
less at a high rate of speed. Thanks to proprietary ul-
tra-fast, high-stability circuit technology, the RM3543
completes the sequence of contact improvement,
measurement and contact check, and judgment out-
put in just 1.6 ms.
Specially designed for current sensing resis-
tors
Thanks to its scaling function, the RM3543 can com-
pensate for the difference between resistance values
obtained at the time of mounting on the board and
during testing. By using the averaging function during
super-low-resistance measurement with a small de-
tection voltage, it is possible to achieve even higher
levels of accuracy.
Multiple Interfaces
EXT I/O is isolated from the measurement and control
circuits to provide noise immunity (p. 89).
All data can be acquired in real time using the built-in
38.4-kbps high-speed RS-232C interface. Connect
the commercially available printer with a serial inter-
face to print measured values and statistical calcula-
tion results (p. 83).
The GP-IB interface is available for Model RM3543-01
(specified when ordering, p. 101).
Clearly Visible Display and Intuitive Opera-
tion
High-contrast LCD provides clear visibility, helping
avoid setting mistakes. The optimum range is selected
automatically when comparator thresholds are en-
tered.
Auto Memory Function Convenient for Sam-
pling Tests (p. 75)
The auto memory function is convenient for sampling
tests after screen-printing. Measured values are auto-
matically acquired as soon as they stabilize, and statis-
tical calculations proceed until the specified quantity is
obtained, upon which an alert notification (alarm) oc-
curs. Selecting [PRINT] (screen display) prints mea-
sured values and statistical calculation results (p. 86).
Fixtures for Component Measurements (p. 4)
The BNC-type measurement jacks exhibit good noise
immunity. Ready availability and easy assembly en-
sure smooth system setup. Various test fixtures are
available for Hioki LCR HiTesters.
Features
High-Speed Data Output and Ample Memory
The Data Output function transfers measured data at
5 ms/sample, even via RS-232C. Up to 30,000 mea-
surements can be stored, and all data can be exported
at the end of measuring each reel. This function is ide-
al for system setup, debugging and process manage-
ment.
HIOKI RM3543A981-04

1.1 Product Overview and Features
13
1
Reliable Contact Checking (p. 49)
Contact checking (that was previously performed be-
fore and after measuring) is now performed during mea-
surement, so probe bounce and contact resistance
fluctuations can be detected. Contact checking time can
be shortened, improving tact times.
Features
Measurement Circuit Strongly Immune to
Contact Resistance Fluctuations
The effects of contact resistance fluctuations are re-
duced even when scattering occurs near the end of
probe life. Such effects are minimized by the fast re-
sponse of the measurement circuit.
Contact Improver Function (p. 50)
The Contact Improver function improves bad contacts
between probes and test samples. Contacts errors are
reduced by penetrating oxidation and impurities be-
tween probes and samples. Reducing contact errors
can increase productivity and quality. The intensity of
the contact improver function can be adjusted accord-
ing to probe type.
Reject Faulty Data –
Voltage Level Monitor Function (p. 52)
When the contact resistance of the HCUR and LCUR
leads fluctuates, the measurement current changes
momentarily. Such momentary changes are not detect-
able by typical contact checking. The Voltage Level
Monitor function detects a contact error if the detection
voltage changes significantly, which can increase the
reliability of measured values.
Minimize Human Error and Risk –
the Settings Monitor Function (p. 56)
If the settings of two instruments are different, trigger-
ing is inhibited and an alarm notification is generated
to avoid setting mistakes due to human error.
Reliable Four-Terminal Measurement –
Probe Short-Circuit Detection Function
(p. 54)
Four-terminal measurements are inhibited when a
conductive foreign object is present between the
POT and CUR probe tips. Short-circuit probe anoma-
lies are detected by checking the resistance between
these tips when not measuring.
Strong Electrical Noise Immunity
The specified measurement accuracy is achieved
even with ±1.5 kV mixed pulse noise. The floating
measurement section design is highly impervious to
electrical noise, minimizing the effect on measured
values even when turning large-induction motors on
and off. The free-range power supply input (90 to 264
V) is practically unaffected by voltage fluctuations, so
stable measurements are possible even in under
poor power conditions.
Previously
Model
RM3543
Contact Condition
Contact Check Measuring
Probe Bounce
Contact
Condition
Detection
Voltage
Error
Good Contact
Poor Contact
Excessive detection
voltage fluctuation error
Good Contact
ERROR
Measurement
Status
Contact Check
Contact Condition
Contact Improver
Function
Contact Improvement
Measuring
Checking
ONON
DUT
Foreign object
POT
CUR
DUT electrode
HIOKI RM3543A981-04

1.1 Product Overview and Features
14
•Constant current (determined by the measurement range) is applied between the HCUR and LCUR terminals while volt-
age is measured between the HPOT and LPOT terminals. The resistance value is obtained by dividing the measured
voltage (B) by the constant current flow (A).
•The effects of large offset voltage such as from thermal emf are reduced by current flowing in the positive and negative
directions (A).
•The constant current source (A) and voltmeter (B) circuit designs are largely unaffected by contact resistance.
•Faulty measurement values caused by unstable or chattering contact conditions can be eliminated by monitoring (C)
the detection voltage (B) waveform (Voltage Level Monitor function).
•Before measuring, the Contact Improver circuit (D) optimizes contact when the probes touch the DUT.
•By also performing contact checking (E), short circuits between CUR and POT terminals caused by a clogged probe tip
can be detected (probe short-circuit detection function).
•When measurement starts, the contact check circuit (E) and constant current monitor (F) are activated to monitor for
fault conditions while measuring. The dual-CPU (C and G) design provides ultra-high-speed measurements and fast
system response.
•Immunity from electrical noise is provided by isolation between the Measurement and Control blocks (H).
•The auto-ranging 100-to-240 V switching power supply (I) can provide stable measurements even in poor power quality
environments.
Block Diagram
AB
C
D
E
F
GH
I
E
D
HIOKI RM3543A981-04