HIOKI HIOKI LR8431-20 User guide

LR8431-20

Instruction Manual

MEMORY HiLOGGER

June 2018 Revised edition 4
LR8431B980-04 18-06H

EN

Contents

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

Confirming Package Contents................................................2

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

Operating Precautions.............................................................6

Chapter 1
Overview ____________________________________13

1.1 Product Overview and Features .............................13

1.2 Measurement Flow ..................................................14

1.3 Names and Functions of Parts ...............................16

1.4 Screen Configurations ............................................18

1.5 Basic Operation .......................................................21

 Screen Operations ........................................................... 21

 Starting and Stopping Recording .....................................22

 Disabling Key Operations (Key-Lock Function) ...............23

 Saving Data ......................................................................23

 Verifying the Input Level (Level Monitor) ..........................24

i

Contents

1

2

Chapter 2
Measurement Preparations _________________25

2.1 Using the Battery Pack (Option) ............................26

 Install the Battery Pack ....................................................29

 Charge the Battery Pack ..................................................29

2.2 Connecting the AC Adapter ....................................30

2.3 Connecting Measurement Cables to the Memory 

HiLogger ...................................................................31

 Connecting Measurement Leads or Thermocouples 

(for voltage or temperature, respectively) ........................32

 Connecting the Optional Model 9641 Connection Cable

(for Pulse Signal Input) .....................................................33

2.4 Turning the Power On and Off ...............................34

2.5 Zero Adjustment ......................................................35

LR8431B980-04

ii

Contents

Chapter 3
Setting before Measurement _______________ 37

3.1 Pre-Operation Inspection ....................................... 37

3.2 Operating Flow Overview ....................................... 38

3.3 Setting Configuration 1 – Recording Settings ..... 42

 Specify the Recording Interval ......................................... 42

 Setting the Display Time Base (horizontal axis 

magnification,set as needed) ........................................... 43

 Selecting the Recording Start/stop Method ..................... 44

 Set the Recording Length for Repeated or One-time 

Recording .........................................................................45

 Enable Digital Filtering (noise suppression) (as needed) 45

 Automatic Saving ............................................................. 46

 Replacing Removable Storage During Real-Time Saving 48

3.4 Setting Configuration 2 – Input Channel Settings 49

 Voltage Measurement Settings ........................................50

 Temperature Measurement Settings ............................... 51

 Integration (Count) Measurement Settings ......................53

 Revolution Measurement Settings ...................................54

3.5 Display Settings ...................................................... 56

 Selecting Waveform Display Color .................................. 56

 Specifying Vertical Display Range by Magnification and 

Zero Position (vertical axis expansion/compression) .......56

 Specifying the Vertical Display Range by Upper and 

Lower Limits (expansion/compression) ............................ 57

 Converting Units (Scaling function) .................................. 58

3.6 Entering Comments ................................................ 60

3.7 Viewing All Channel Settings in a List .................. 62

 Batch Copying Channel Settings .....................................63

 Batch Setting Waveform Display/Hide and Waveform 

Color Settings for All Channels ........................................ 63

 Initializing Settings (to factory defaults) ........................... 64

 Aligning Zero Positions on the Grid ................................. 64

 Display Celsius (°C) temperature values as 

Fahrenheit (°F) ................................................................. 65

Chapter 4
Specifying Criteria for Measurements 
(Triggering, Alarm and Timer) ______________67

4.1 Setting Criteria to Start and Stop Recording ........68

 Setting the Input Signal Trigger Threshold (Level Trigger) 69
 Setting Lower and Upper Trigger Thresholds 

(Window Trigger) ..............................................................70

 Selecting Trigger Sources and Combinations .................. 71

 Setting Criteria for Pre-Trigger Recording (Pre-Trig) .......72

4.2 Alarm Output ............................................................73

4.3 Confirming Trigger and Alarm Criteria Settings 

(List) ..........................................................................75

4.4 Starting and Stopping Recording by Timer ..........76

4.5 About Recording Operation ...................................78

iii

Contents

3

4

5

Chapter 5
Waveform Analysis__________________________81

5.1 Viewing Waveforms .................................................82

 Scrolling Waveforms ........................................................82

 Verifying Waveform Display Position ...............................82

 Magnifying and Compressing Horizontally .......................83

 Viewing Any Waveform Location (Jump Function) ..........83

5.2 Selecting Display Options ......................................84

 Displaying Gauges ...........................................................84

 Displaying Cursor Values ................................................. 84

 Specifying a Waveform Time Span .................................. 86

 Viewing Input Signals as Numerical Values .....................87

5.3 Inserting Event Marks (Search Function) ..............88

 Inserting Event Marks While Viewing Waveforms ............ 88

 Inserting Event Marks Using External Input Signals ........89

 Searching Event Marks ....................................................90

Chapter 6
Saving & Loading Data _____________________91

6.1 About Saving and Loading Data ............................91

6.2 Using a CF Card/USB flash drive ...........................93

 CF Card Insertion & Removal ..........................................94

6

iv

Contents

 USB flash drive Insertion & Removal ............................... 94

 Formatting a CF Card/USB flash drive ............................ 95

6.3 Saving Data ............................................................. 96

 Automatic Saving ............................................................. 97

 Selecting the Manual Saving Method 

[Quick Save]/[Select & Save] ...........................................98

 Saving Waveform Data (with the SAVE Key) .................. 99

 Capturing a Screen Image (With the SAVE Key) ........... 100

 Saving Numerical Calculation Results 

(With the SAVE Key) ...................................................... 101

 Saving Setting Configurations ........................................ 102

6.4 Loading Data on the Memory HiLogger .............. 103

 Loading a Setting Configuration ..................................... 103

 Loading Waveform Data and Screen Images ................104

6.5 Data Management ................................................. 105

 Switching removable storage ......................................... 105

 Viewing Folder Contents and the Parent Folder ............106

 Deleting Data .................................................................106

 Renaming Files and Folders .......................................... 107

 Copying Data .................................................................108

 Sorting Files ................................................................... 109

6.6 Transferring Data to a Computer 

(USB Drive Mode) ................................................. 110

 Select the USB Drive Mode ...........................................110

 Connecting the USB Cable ............................................ 111

Chapter 7
Numerical Calculations ___________________ 113

7.1 Calculation Methods ............................................. 113

 Auto Calculation ............................................................. 114

 Manual Calculation ........................................................ 115

 Apply Calculations to a Specific Time Span 

(Manual Calculation Only) .............................................. 116

7.2 Numerical Value Calculation Expressions ......... 117

Chapter 8
System Environment Settings ____________ 119

8.1 Screen and Key Operation Settings ....................120

 Using the Auto-Resume Function 

(Resume After Power Restoration) ................................120

 Adjust Backlight Brightness ............................................ 120

 Enabling and Disabling the Backlight Saver ..................121

 Selecting Black or White Screen Background ................ 121

 Enabling or Disabling the Beeper ...................................121

 Selecting the Horizontal (Time) Axis Display .................122

 Selecting the Display Language ..................................... 122

8.2 CSV File Saving Settings ......................................123

 CSV File Data Decimal and Separator Characters ........123

8.3 Making System Settings .......................................124

 Setting the Date and Time .............................................124

 Initializing the Memory HiLogger (System Reset) ..........125

 Switching the USB mode ...............................................126

 Self-Test ......................................................................... 127

Chapter 9
External Control __________________________ 129

9.1 Connecting to the External Control Terminals ...129

9.2 External Trigger Input ...........................................131

9.3 External Signal Output (Trigger Output) .............132

9.4 Alarm Signal Output (Alarm Output) ...................134

9.5 Synchronous Measurements with Multiple 

Instruments ............................................................135

v

Contents

6

7

8

9

10

Chapter 10
Specifications_____________________________ 137

Chapter 11
Maintenance and Service_________________ 147

11.1 Troubleshooting ....................................................147

11.2 Cleaning .................................................................149

11.3 Disposing of the Instrument .................................150

11

Appendix

Index

vi

Contents

Appendix____________________________________ A1

Appendix 1 Error Messages and Remedial Actions .........A1

Appendix 2 File Naming ...................................................... A7

Appendix 3 Text File (CSV) Internal Format ......................A8

Appendix 4 Binary File Size Calculation ............................ A9

Appendix 5 List of Default Settings.................................. A10

Appendix 6 Maximum Recordable Time ..........................A11

Appendix 7 Reference .......................................................A12

Appendix 8 Concerning Noise Countermeasures ..........A13

Appendix 9 Using the Application Program ....................A19

 Installing Logger Utility ....................................................A20

 Installing the USB Driver .................................................A23

 Connecting the Memory HiLogger to the Computer with 

a USB Cable ...................................................................A26

 Starting and Ending Logger Utility ..................................A29

 Uninstalling the Logger Utility .........................................A29

Appendix 10Frequently Asked Questions .......................A30

 Installation and Settings ..................................................A30

 Triggering ........................................................................A32

 Measuring .......................................................................A33

 Data Saving ....................................................................A34

 Logger Utility ...................................................................A38

Appendix 11Pulse Input Circuit Diagram.........................A39

Index ___________________________________Index 1

Introduction

Thank you for purchasing the HIOKI "Model LR8431-20 Memory
HiLogger."
To obtain maximum performance from the instrument, please read
this manual carefully, and keep it handy for future reference.

Trademarks

• Microsoft, Windows, Excel, are either registered trademarks or
trademarks of Microsoft Corporation in the United States and
other countries.

• CompactFlash is a registered trademark of Sandisk Corporation
(USA).

1

Introduction

2

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 dealer or Hioki representative.

Confirm that these contents are provided.

 Model LR8431-20 ......................... 1

Memory HiLogger

 Model Z1005 AC Adapter ............ 1

with supplied power cord

(p. 30)

 Measurement Guide .................... 1

 USB Cable .................................... 1

 CD ................................................. 1

• Instruction Manual (PDF) 

(This document)

• Logger Utility Instruction Manual (PDF)

• Logger Utility (Data acquisition 

application program)

(p. A26)

The latest version can be
downloaded from our web site.

Confirming Package Contents

Confirming Package Contents

About options:

Contact your dealer or Hioki representative for details.

 Model 9780 Battery Pack
 Model Z1005 AC Adapter
 Model 9641 Connection Cable (for pulse inputs)
 Model 9782 Carrying Case
 Model 9812 Soft Case

 Model 9727 PC Card (256MB)
 Model 9728 PC Card (512MB)
 Model 9729 PC Card (1GB)
 Model 9830 PC Card (2GB)
 Model 9809 Protection Sheet

3

Safety Information

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.
However, using the instrument 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.

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 DC (Direct Current).

Indicates AC (Alternating Current).





Indicates the ON side of the power switch.

Indicates the OFF side of the power switch.

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.

4

Ni-MH

Safety Information

Symbols for Various Standards

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

This is a recycle mark established under the Resource Recycling Promotion
Law (only for Japan).

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)

Unless otherwise specified, "Windows" represents Windows XP, Windows Vista, Win­dows 7, Windows 8 or Windows 10.

Click: Press and quickly release the left button of the mouse.
Double click: Quickly click the left button of the mouse twice.

Indicates the location of reference information.

Indicates that descriptive information is provided below.

The names of setting objects and buttons on the screen are indicated
by square brackets [ ].

Bold characters within the text indicate operating key labels.

Accuracy

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

f.s. (maximum display value or scale length)

The maximum displayable value or scale length. This is usually the name of the cur­rently selected range.

Example: For the 1 V range, f.s. = 1 V

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.

Safety Information

Measurement categories

To ensure safe operation of measurement instruments, IEC 61010 establishes safety stan­dards for various electrical environments, categorized as CAT II to CAT IV, and called mea­surement categories.

5

CAT II

CAT III

CAT IV

Using a measurement instrument in an environment designated with a higher-numbered cat­egory than that for which the instrument is rated could result in a severe accident, and must
be carefully avoided.
Use of a measurement instrument that is not CAT-rated in CAT II to CAT IV measurement
applications could result in a severe accident, and must be carefully avoided.

Primary electrical circuits in equipment connected to an AC electrical outlet
by a power cord (portable tools, household appliances, etc.)
CAT II covers directly measuring electrical outlet receptacles.

Primary electrical circuits of heavy equipment (fixed installations) connected
directly to the distribution panel, and feeders from the distribution panel to
outlets.

The circuit from the service drop to the service entrance, and to the power
meter and primary overcurrent protection device (distribution panel).

Difference between "Measurement" and "Recording"

The measurement and recording processes are distinguished as follows for the purposes of
these instructions.

Measurement:

Recording:

Measured data (data acquired in internal memory) is erased whenever a new measurement
starts. To retain data, always record (save) it.

The acquisition of input values into internal HiLogger memory or to a PC
via communications.

Storing measurement data on a CF card, USB flash drive or on a PC via
data communication.

6

Operating Precautions

Operating Precautions

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

Before Use

• 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 dam
age, contact your dealer or Hioki representative.

• Before using the instrument, make sure that the insulation on the 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 dealer or Hioki rep
resentative for replacements.

Instrument Installation

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

• Temperature and humidity range for guaranteed accuracy: 23±5°C, 80%RH or
less

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

Exposed to direct sunlight
Exposed to high tempera­ture

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

In the presence of corrosive
or explosive gases

Exposed to strong electro­magnetic fields
Near electromagnetic radia­tors

-

-

Exposed to high levels of
particulate dust

Subject to vibration

The maximum operating (ambient) temperature for the LR8431-20
is 40°C. Do not attempt to use in higher temperature environ
ments.

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

-

• Correct measurement may be impossible in the presence of

Horizontal placement Upright placement

strong magnetic fields, such as near transformers and high-cur
rent conductors, or in the presence of strong electromagnetic
fields such as near radio transmitters.

• If liquid enters the enclosure through an air vent or other opening, it
may damage the instrument's internal circuitry. Exercise caution con
cerning the surrounding environment when installing the instrument.

Installation Precautions

• If the instrument is used in any state other than the following, the
measurement accuracy may not satisfy the device specifications.

• Leave sufficient space around the ventilation holes and install the
instrument with the holes unobstructed.

• Avoid temperature changes around the terminal block. Especially
avoid directed airflow such as from an electric fan or air conditioner
vent.Thermocouple inputs are prone to measurement errors.

• When the HiLogger is moved to a location with significantly dif­ferent ambient temperature, allow at least 30 minutes for thermal
equalization before measuring.

7

Operating Precautions

-

-

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 prevent interfer
ence to the reception of radio and television broadcasts.

-

8

Operating Precautions

Handling the Cords and Cables

• Avoid stepping on or pinching cables, which could damage the
cable insulation.

• To avoid breaking the cables and probes, 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.

Before Turning Power On

Using the Battery Pack

• For battery operation, use only the HIOKI Model 9780 Battery
Pack. We do not take any responsibility for accidents or
damage related to the use of any other batteries.

See: 2.1, "Using the Battery Pack (Option)" (p. 26)

Using the AC Adapter

• Use only the supplied Model Z1005 AC Adapter. AC adapter
input voltage range is 100 to 240 VAC (with ±10% stability) at
50/60 Hz. To avoid electrical hazards and damage to the
instrument, do not apply voltage outside of this range.

• Turn the instrument off before connecting the AC adapter to
the instrument and to AC power.

• 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 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.

When the power is turned off, do not apply voltage or current to
the connectors. Doing so may damage the instrument.

• After use, always turn OFF the power.

• Brief power interruptions of 40 ms or less will not cause this
instrument to malfunction. However, Longer interruptions may
cause the Memory HiLogger to shut itself off, so consider local
power conditions before installing, as appropriate.

• To ensure that recording is not interrupted by power outages, you
can use the Z1005 AC Adapter and 9780 Battery Pack together.

About Inputs and Measurement

• The maximum input voltage (and the maximum rated volt­age to earth) for the analog input terminals is 30 Vrms (or 60
V DC). If these limits are exceeded, the instrument may be
damaged and personal injury or death could occur, so do
not attempt measurement.

• Do not leave the Memory HiLogger connected to test objects
in environments where a voltage surge might exceed the
dielectric withstand voltage. Doing so could result in damage
to the Memory HiLogger, bodily injury or fatal accident.

• Channels are insulated by semiconductor relays. When a
voltage beyond the specification is applied between the
channels, the semiconductor relay may short circuit. Please
ensure that a voltage beyond specification, especially a
surge such as a lightning, is never applied. When an abnor
mal measurement value is observed, please contact your
dealer or Hioki representative for inspection.

The waveform for an open channel may sometimes appear to be
influenced by the signals of the other channels being measured. If
you do not like this, please set the waveform display of the open
channel to OFF or short-circuit the input terminals of the open
channel by connecting the positive and negative terminal.

9

Operating Precautions

-

10

Operating Precautions

CD Handling

• Always hold the disc by the edges, so as not to make fingerprints
on the disc or scratch the printing.

• Never touch the recorded side of the disc. Do not place the disc
directly on anything hard.

• Do not wet the disc with volatile alcohol or water, as there is a
possibility of the label printing disappearing.

• To write on the disc label surface, use a spirit-based felt pen. Do
not use a ball-point pen or hard-tipped pen, because there is a
danger of scratching the surface and corrupting the data. Do not
use adhesive labels.

• Do not expose the disc directly to the sun's rays, or keep it in
conditions of high temperature or humidity, as there is a danger
of warping, with consequent loss of data.

• To remove dirt, dust, or fingerprints from the disc, wipe with a dry
cloth, or use a CD cleaner. Always wipe from the inside to the
outside, and do no wipe with circular movements. Never use
abrasives or solvent cleaners.

• Hioki shall not be held liable for any problems with a computer
system that arises from the use of this CD, or for any problem
related to the purchase of a Hioki product.

Using a CF Card/USB flash drive

USB method of use

Connector
used

[System] screen USB
mode setting

Use a USB flash drive. Type A USB Memory (Default)

Communicate with the LR8431-20
and initiate measurement using the
Logger Utility software from a com­puter (using a USB cable).

Type B USB Communication

Read files on a CF card that is con­nected to the LR8431-20 from a
computer (using a USB cable).

Type B USB Drive

• Inserting a CF card/USB flash drive upside down, backwards or in the
wrong direction may damage the CF card, USB flash drive, or HiLogger.

• Never eject a CF card /USB flash drive while measuring or when the
HiLogger is or accessing the card. Data on the CF card/USB flash
drive may be destroyed. (The CF icon/USB flash drive icon at the
lower right is red while the card is being accessed.)

• Do not transport the HiLogger while a USB flash drive is connected.
Damage could result.

• As the CF card/USB flash drive is sensitive to static electricity, damage
to the CF card/USB flash drive or wrong operations by the HiLogger
may occur due to static electricity. Please be careful when handling it.

• With some USB flash drives, the HiLogger may not start up if power is
turned on while the USB flash drive is inserted. In such a case, turn
power on first, and then insert the USB flash drive. It is recommended
to try out operation with a USB flash drive before starting to use it for
actual measurements.

• The Flash memory in a CF card/USB flash drive has a limited operat­ing life. After long-term usage, data storage and retrieval become diffi­cult. In this case, replace the CF card/USB flash drive with a new one.

• We cannot provide compensation for data loss in a CF card/USB flash
drive, regardless of content or cause of the damage. Data is also cleared
from memory if a long time passes after measuring. Always maintain a
backup of important data stored on a CF card/USB flash drive.

• Although real-time saving to USB flash drive is supported, a CF card is
recommended for data preservation. Performance cannot be guaranteed
when using storage media other than a Hioki-specified CF card option.

• Use a USB flash drive whose continuous current consumption does not
exceed 300 mA (peak 500 mA). (The peak value is displayed as "Max
Power" under the USB flash drive self-test on the [System] screen.)

• Depending on how USB is used, the USB connector and instrument set­tings may vary as shown in the chart below.

• The three USB methods of use described in the chart below involve
exclusive settings and cannot be used simultaneously.

11

Operating Precautions

12

Operating Precautions

13

Record anomalies

Abnormal events can be ana­lyzed by recording with the
trigger function (p. 67)
Use the alarm function to out­put signals when anomalies
occur (p. 73).

Measurement data and
setting configurations are
stored, read and managed
as data files

Measurement data can be stored
to and read from a CF card or
USB flash drive (p. 91).

Waveform analysis

mV A

Cursor Measurements (p. 84)

A

B

Using the A/B cursors, values at cursor lo­cations on waveforms and the time at trig­ger positions can be displayed.

Performs six calculation types, including
maximum and average values.

Numerical Calculations (p. 113)

123.4V

Acquire pulse signals

Measure integrated pulses
or revolutions from sensors
and pulse output devices
such as watt-hour meters.

Gauge display (p. 84)

Zoom in/out
(p. 83)

Numerical display (p. 87)

Analysis on a PC

Monitor and analyze measurement
data with the supplied application
program (p. A19).

Event search
(p. 88)

T

1 2

Display in converted units

Using the scaling function, input val­ues can be displayed in units of the
actual physical quantity being mea­sured, such as current or flow vol­ume (p. 58).

Observe voltage fluctua­tions and temperature
changes

Just connect measurement
leads or thermocouples to mea­sure as needed.

1.1 Product Overview and Features

Overview Chapter 1

1.1 Product Overview and Features

The Hioki LR8431-20 Memory HiLogger is a compact, lightweight, easy-to­operate waveform recorder. It can run on batteries, and can be quickly
deployed when a power anomaly occurs.
Measurement data can be monitored, subjected to calculations and analyzed
on a personal computer using the supplied application program.

1

Chapter 1 Overview

3

14

To save data, insert a
CF card or USB flash
drive. (p. 94)

AC adapter
connection (p. 30)

Install the Battery Pack (option) (p. 26)

Connect to the Model LR8431-20 (p. 25), and Set Up (p. 7)

Turn the Power On (p. 34)

Measurement
cables connections
(p. 31)

1

2

Configure Recording Settings (p. 38)

Using a previously saved

setting configuration

Reload a previously stored setting con­figuration from Model LR8431-20
memory or a CF card or USB flash
drive, and measure (p. 103)

Set the data acquisition (recording) inter­val, and recording length (time span).
Select the type of measurement data to
save when automatically saving to a CF
card or USB flash drive.
Remaining data stored in the instrument
can be saved when finished measuring.

Move to a
setting item

Open the
setting options

Select Apply

1

2

1.2 Measurement Flow

1.2 Measurement Flow

Installing, Connecting and Turning On

Settings

1.2 Measurement Flow

Configure Input Channels (p. 38)

Select input channels, and set input types
and measurement ranges.
Make other settings as desired.

Move to a
setting item

Open the
setting options

Select Apply

Press the START/STOP Key (p. 22)

Record once, and stop.
[Repeat]: Off

Stop

Measurement

Start

Measurement

When recording using the trigger function, recording occurs only
when the input waveform satisfies specified trigger criteria.

Record repeatedly.
[Repeat]: On

(default setting)

View Measurement Data (p. 81)

Waveforms can be zoomed and numerical values confirmed.

Save Data (p. 91)

Measurement data, waveform data, screen images and numerical calculation
results can be saved.

Calculate (p. 113)

Numerical measurement data can be applied to calculations.

View on a Computer (p. A19)

Analyze recorded data using the supplied application program.

Turn the Memory HiLogger Off (p. 34)

Starting and Stopping Measurement

15

1

Chapter 1 Overview

3

Data Analysis

When Finished

16

Front Panel

Operating Keys

Rear Panel

Battery Compartment (p. 26)

The optional Model 9780 Battery Pack is
installed here.

Manufacturer's Serial No.

Shows the serial number.The serial number
consists of 9 digits. The first two (from the left)
indicate the year of manufacture, and the
next two indicate the month of manufacture.
Do not remove this label, as it is required for
product support.

Display Screen (p. 81)

4.3-inch TFT color LCD
Screen Configurations (p. 18)

 WAVE/DATA

Selects among waveform
screen displays (p. 18).

 SET

Displays the Settings
screens, and switches
among the screen tabs
with each press (p. 20).

 FILE

Displays file information
(p. 19).

 CH/

Select channels.

 ESC

Cancels changes to settings.

 Cursor Keys

Moves the position of
the cursor (blinking
selection) on the
screen.

 ENTER

Accepts displayed
settings.

 KEY LOCK

Disables keypad op­erations. Press and
hold the left and right
cursor keys simultaneously for
three seconds to lock and un­lock the keys.

 (Zero Adjust)

Performs zero adjust­ment. Press the up
and down keys simul­taneously to execute (p. 35).

Press to save data manu­ally (p. 96).

Press the center key to
select waveform scrolling
or A/B cursor movement,
then press the left and
right cursor keys to scroll
or move (p. 21).

Setup and display

Saving operations

Scroll waveforms and

read cursor values

Choose a screen

Start and stop measure­ment. The LED at the left
lights green while mea­suring (p. 22).

Start and stop

measurement

Operating Keys

1.3 Names and Functions of Parts

1.3 Names and Functions of Parts

17

Top Panel

AC Adapter Socket

Connect the supplied Model
Z1005 AC Adapter (p. 30).

CF Card Slot

Insert an optional CF card. (p. 93)

Analog Input Terminals

Connect measurement leads for voltage mea­surement, and thermocouples for temperature
(p. 31).

CHARGE LED

This LED lights when the
battery is charging (p. 29).

Pulse Input Connector

Connect an optional 9641 cable (p. 33).

External Control Terminals

Control signals can be received from and
output to external devices (p. 129).

Right Side

POWER Switch

Turns the instrument on and off (p. 34)

Power Off

Power On

USB Port

(USB 2.0 mini-B receptacle)

• Using the included Logger Utility applica­tion software, you can monitor measure­ment data on the computer and transfer
settings to the instrument. (p. A26) (To
use, set the USB mode on the [System]
screen to [USB Communication].)

• You can transfer data on the instrument’s
CF card to a computer. (p. 110) (To use,
set the USB mode on the [System]
screen to [USB Drive].)

USB flash drive Slot
(Type A USB 2.0 
receptacle)

Used to save data to a
USB flash drive. (p. 94)
(To use, set the USB
mode on the [System]
screen to [USB Memory].)

1.3 Names and Functions of Parts

1

Chapter 1 Overview

3

The [USB Memory], [USB Communication], and [USB Drive] USB
mode settings are exclusive and cannot be used simultaneously.

18

Selects between
seven display
types.

The screen switches
each time you press
the key.

Operational infor­mation is displayed
along the bottom of
the screen.

[Wave] Screen

Measurement data is displayed
as waveforms (p. 81).

[Value+Cmnt] Screen

Measurement data is displayed
as numerical values with com­ments (p. 87).

[Wave+Calc] Screen

Measurement data is displayed
as waveforms with calculation
results (p. 115).

[Gauge+Wave] Screen

Measurement data is displayed
as waveforms with gauges (p.

84).

[Wave+Value] Screen

Measurement data is displayed
as waveforms and numerical
values (p. 87).

[Value] Screen

Measurement data is displayed
as numerical values (p. 87).

[Wave+Crsr] Screen

Measurement data is displayed
as waveforms with cursor val­ues (p. 84).

Waveform/Numerical Screens

Selection is also
available from the
name of the current
screen displayed
near the bottom right

[Gauge+Wave]

[Wave]

[Wave+Value]

[Value+Cmnt]

[Value]

[Wave+Calc]

[Wave+Crsr]

1.4 Screen Configurations

1.4 Screen Configurations

19

Waveform/Numerical Screens (About the Icons)

Clock

"Setting the Date and Time"
(p. 124)

Power source indicator

Indicates the Memory HiLogger's power source.

AC adapter operation
Battery pack operation



(

Fully charged battery pack)

Battery pack operation
Battery pack operation 

(Low battery indicator)

CF card

Displayed when a CF card is inserted.
The icon appears red when accessing the card.

USB source indicator

Indicates the USB status.

Operating in USB 
Memory mode.

Operating in USB 
Communication mode.

File Screen

View and manage files on the
CF card or USB flash drive 
(p. 91).

File Screen

Operational infor­mation is displayed
along the bottom of
the screen.

1.4 Screen Configurations

1

Chapter 1 Overview

3

20

[CH] Screen

Make input channel settings
while viewing the monitor dis­play (p. 49).

[Scaling] Screen

Make these settings to convert
measured values to arbitrary
units for display (p. 58).

[Comment] Screen

Enter channel comments
(p. 60)

[Setting] Screen

[Range] Screen

Make settings while viewing all
channel settings (p. 62).

[Trig & Alm] Screen

Recording criteria (triggering)
and warning sounds can be set
for each channel (p. 67).

[System] Screen

Configure the system environ­ment (p. 119).

Settings Screens

Press the left/right
cursor keys to se­lect between the
Settings screens.

Selects between
seven display
types.

The screen switch­es each time you
press the key.

Operational infor­mation is displayed
along the bottom of
the screen.

Make settings for recording (p.

42). Set numerical calculation,
auto-saving and timers.

1.4 Screen Configurations

21

Select the item to
change.

Show available
setting options.

Select the desired
setting.

Changing screen contents

Setting Screen

Waveform Screen

Apply the new
setting,
or cancel it.

Scrolling a waveform

Earlier

Later

See: "Scrolling Waveforms" (p. 82)

Reading values at cursors

1

Display the A/B cursors.

2

Move the A/B cursors.

Values at cursor positions can be
read numerically.

You can select the cursor
display type and which cur­sor(s) to move (p. 84).

1.5 Basic Operation

1.5 Basic Operation

Screen Operations

1

Chapter 1 Overview

3

22

Press the START/STOP key.
The green LED lights.
When using the trigger function, the times when measurement

starts and when recording (data acquisition) starts are not the
same.

A confirmation message appears when you press the

START/

STOP

key to start recording. Save important data to a CF card
or USB flash drive before starting, because previous measure­ment data will be overwritten when recording starts.

Start Measurement

When [Repeat] (record multiple instances of the specified
recording length) or

[Cont] (record continuously) is

enabled:

Pressing the

START/STOP key stops recording.

When

[Repeat] and [Cont] are disabled (Off):

Recording stops after the specified recording length. Pressing
the

START/STOP key during recording displays a confirmation

message. Select

[Yes] to stop recording.

For details about repeating and continuous recording:

See: "Selecting the Recording Start/stop Method" (p. 44)

"Set the Recording Length for Repeated or One-time Record­ing" (p. 45)

Finish Measurement

1.5 Basic Operation

Starting and Stopping Recording

Acquire measurement data on the Memory HiLogger, and start recording.
When recording stops depends on data recording settings (repeat recording,
triggering, timers, etc.).

When you want measurement data to be automatically saved, before starting
recording, check that auto-save is enabled
is correctly inserted (p. 94), and that sufficient storage capacity is available (p. A11).

(p. 78)

(p. 46), that a CF card or USB flash drive

23

Press and hold the right and left cursor keys for three
seconds to lock the other keys, and repeat to unlock.

Insert a CF card or
USB flash drive.

Press the

SAVE key.

A dialog appears.

Select the save destination
and item to save, and press
ENTER key. 
Select

[Yes] in the confirma-

tion dialog, and press ENTER
again to save the data to the
CF card or USB flash drive.

1.5 Basic Operation

Disabling Key Operations (Key-Lock Function)

Keys can be disabled to avoid inadvertent operations.

Saving Data

Measurement data, settings, screen images and numerical calculation results
can be saved.
For details of the saving methods, see Chapter 6, "Saving & Loading Data" (p.

91).

(Default settings)
Saving Method: [Select & Save] (Press the SAVE key to select and save
data.)

1

Chapter 1 Overview

3

• When using a USB flash drive, set the USB mode on the [Sys­tem] screen to [USB Memory]. USB flash drives cannot be used
while the USB mode setting is [USB Communication] or [USB
Drive].

• The [USB Memory], [USB Communication], and [USB Drive]
USB mode settings are exclusive and cannot be used simulta
neously.

-

24

Current Input
Signal Level
and Channel
Number

Level Monitor

Display Channel and Gauge

Shows the gauge for the current­ly selected channel. The gauge
display is linked to the measure­ment and display range settings.
Press the

CH / keys to dis-

play the gauge for another chan­nel.

Changing the Monitor Display

Select whether to display all channels, or only se­lected channels. [All Ch]/[SlctCh]/[Value]

• [All Ch]

The channels displayed in the level monitor are
those with a check mark ( ) displayed next to
the channel number in the settings.

• [SlctCh] (Selected Channels)

The level monitor displays the channel selected
on this screen.

• [Value]

The input values of all channels are displayed
numerically.

Displayable Waveform Range

This is determined by the waveform display range
setting.

Input Waveform Amplitude

Indicates real-time input ampli­tude.
Using the Scaling function
(p. 58), measurement units
can be converted as desired
for display.

1.5 Basic Operation

Verifying the Input Level (Level Monitor)

You can verify the input status and display range while making settings on the
Setting screen. This is not available while measuring.

25

Rear View

Install the 9780 Battery Pack
(option) (p. 26)

1

3

(To save data)

Insert a CF card or USB flash
drive (p. 93)

4

2

Connect measurement cables 
(p. 31)

Pulse signals: 
Connect the Hioki 9641
connection cable

Voltage measurement: 
Connect the measurement
leads.

Temperature measurement: 
Connect thermocouples.

External control signal
inputs

External control signal
outputs (p. 129)

Turn the power on (p. 34)

Execute zero adjustment (p. 35)

5

Connect the AC adapter
(p. 30)

Measurement 
Preparations Chapter 2

2

Chapter 2 Measurement Preparations

3

26

2.1 Using the Battery Pack (Option)

2.1 Using the Battery Pack (Option)

If commercial power is not available when the AC adapter is connected, the
LR8431-20 Memory HiLogger can operate from the Model 9780 battery pack,
so when using commercial power, the battery pack serves as a backup supply
during power outages.
Charge the battery pack fully before using it the first time.

Be sure to observe the following precautions. Incorrect han­dling may result in liquid leaks, heat generation, ignition,
bursting and other hazards.

• Do not use a battery pack other than the 9780 Battery Pack.

We cannot accept responsibility for accidents or damage
related to the use of any other batteries.

• To avoid the possibility of explosion, do not short circuit,
disassemble or incinerate battery pack.

• When storing the instrument, make sure no objects that
could short-circuit the connectors are placed near them.

• The battery pack contains lye, which can cause blindness if
comes into contact with the eyes. Should battery liquid get
into your eyes, do not rub your eyes but rinse them in plenty
of water and seek the immediate attention of a physician.

Installing and replacing the battery pack

• To avoid electric shock, turn off the power switch and dis­connect the cables before replacing the battery pack.

• After installing or replacing the battery pack, replace the
battery compartment cover and screw.

• Handle and dispose of batteries in accordance with local
regulations.

27

2.1 Using the Battery Pack (Option)

Observe the following to avoid damage to the instrument.

• Use the battery pack in an ambient temperature range of 0 to
40°C and charge it in an ambient temperature range of 5 to 30°C
to be on the safe side.

• If the battery packs fails to complete charging within the stipu­lated time, disconnect the AC adapter from the pack to stop
charging.

• Consult your dealer or nearest service station should liquid
leaks, strange odor, heat, discoloration, deformation and other
abnormal conditions occur during use, charging or storage.
Should these conditions occur during use or charging, turn off
and disconnect the instrument immediately.

• Do not expose the instrument to water and do not use it in exces­sively humid locations or locations exposed to rain.

• Do not expose the instrument to strong impacts and do not throw
it around.

• The battery pack is subject to self-discharge. Be sure to charge
the battery pack before initial use.

• When recharging a discharged battery pack in the LR8431-20,
allow it to charge for at least ten minutes with the LR8431-20
turned off to maximize battery longevity.

• The battery pack is a consumable. If the battery capacity remains
very low after correct recharging, the useful battery life is at an
end. It can be recharged up to about 500 times.

• To prevent battery pack deterioration when the battery will not be
used for 1 month or longer, remove it and store it in a dry location
with an ambient temperature range of between -10 to 30°C. Be
sure to discharge and charge it every two months. Long-term
storage when capacity has decreased will make charging impos
sible and reduce performance.

• Remove the battery pack from instrument once a month and
check that appearance is normal.

• As long as battery charge remains, waveform data is retained in
internal memory while the Memory HiLogger is turned off, so the
battery continues to gradually discharge. When the battery
charge is depleted, stored waveform data is lost.

2

Chapter 2 Measurement Preparations

3

-

28

When to charge

When powering the instrument from the battery pack without the Model Z1005
AC Adapter, the low battery indicator ( ) is displayed when the battery
charge is depleted, indicating that the battery pack requires charging.
Note that if the Memory HiLogger is turned off under this situation, waveform
data may fail to be backed up, and could be lost.

Approximate charging time:

About 200 minutes at 23°C when recharged at the first appearance of the low
battery indicator.

Approximate continuous battery-only operating time

(When saving data to a CF card at a temperature of 23°C)
* When using a USB flash drive, the continuous operating time may decrease

depending on the particular USB flash drive in use.

• After a full charge, with the LCD backlight always on (default setting):
approximately 2.5 hours

• After a full charge, with the LCD backlight off (five minutes after last key­press): approximately 3 hours

See: "Enabling and Disabling the Backlight Saver" (p. 121)

2.1 Using the Battery Pack (Option)

Install the Battery Pack

Required tool:

One Phillips screwdriver
(No.2)

Important

Disconnect the AC adapter when installing the battery pack.

Battery Compartment
Cover

1

Place the Memory
HiLogger face down, and
remove the battery com­partment cover screw
and cover.

2

Connect the plugs of
the battery pack to the
connectors and insert
the battery pack with
the label side up.

Replace the bat­tery compartment
cover and screw.

3

Pull the battery pack plug straight out to remove the battery pack.

Make sure that the
cables are not
pinched.

2

Be sure to properly
seat the connectors.

1

Connect the power cord to
the inlet socket on the AC
adapter.

1

2

Connect the output plug of the
AC adapter to the instrument.

Plug the power cord into the mains outlet.

3

Refer to 2.2, "Connecting the AC Adapter" (p. 30) for details about the AC adapter.

The CHARGE LED lights red
when charging begins.
Charging is finished when the
CHARGE LED turns off.

29

2.1 Using the Battery Pack (Option)

2

Chapter 2 Measurement Preparations

3

Charge the Battery Pack

Regardless of whether the Memory HiLogger is on or off, the battery pack
recharges whenever the Z1005 AC Adapter is plugged in to a power source.
Therefore, charging is provided by merely keeping the battery installed in the
Memory HiLogger.

30

Connect the power cord to
the inlet socket on the AC
adapter.

Rated supply voltage is 100 to
240 VAC, and rated supply fre­quency is 50 or 60 Hz.

1

2

Connect the output plug of the AC
adapter to the instrument.

Plug the power cord into the mains outlet.

3

2.2 Connecting the AC Adapter

2.2 Connecting the AC Adapter

Connect the power cord and the instrument to the supplied Model Z1005 AC
Adapter, then plug the power cord into an outlet. When used with the battery
pack installed, the battery serves as an operating backup supply in case of
power failure, and the AC adapter otherwise has priority.

Before Connecting

• Use only the supplied Model Z1005 AC Adapter. AC adapter
input voltage range is 100 to 240 VAC (with ±10% stability) at
50/60 Hz. To avoid electrical hazards and damage to the
instrument, do not apply voltage outside of this range.

• Turn the instrument off before connecting the AC adapter to
the instrument and to AC power.

• To avoid electrical accidents and to maintain the safety
specifications of this instrument, connect the power cord
only to a 3-contact (two-conductor + ground) outlet.

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

2.3 Connecting Measurement Cables to the Memory HiLogger

6 mm
max.

6 mm
max.

2.3 Connecting Measurement Cables to
the Memory HiLogger

31

Connect the appropriate cables for the intended recording application.

• When recording voltage fluctuations or temperature changes (p. 32)

• When recording pulse signals (p. 33)

Be sure to read the "Operating Precautions" (p. 6) before connecting the cables.

Connecting to the Analog Input Terminals

• The maximum input voltage (and the maximum rated volt­age to earth) for the analog input terminals is 30 Vrms (or 60
V DC). If the voltage is exceeded, this device will be dam
aged and personal injury will result. Therefore, do not per­form measurement in this case.

• Do not leave the Memory HiLogger connected to test objects
in environments where a voltage surge might exceed the
dielectric withstand voltage. Doing so could result in damage
to the Memory HiLogger, bodily injury or fatal accident.

• Do not connect a cable to the instrument while it is con­nected to the object to be measured. Otherwise, an electric
shock accident may occur.

• To avoid short-circuit accidents, make certain that connec­tions are secure.

• Channels are insulated by semiconductor relays. 
When a voltage beyond the specification is applied between
the channels, the semiconductor relay may short circuit.
Please ensure that a voltage beyond specification, espe
cially a surge such as a lightning, is never applied. When an
abnormal measurement value is observed, please contact
your dealer or Hioki representative for inspection.

2

Chapter 2 Measurement Preparations

3

-

-

• Measurements may be affected by noise or other electromag­netic ingress if input leads are longer than about three meters.

• Route measurement leads and cables as far away as possible
from power and earth lines.

• Measurement values may be scattered if the leads are routed in
parallel with other devices. If they must be parallel, check opera
tion before taking measurements.

• Avoid temperature changes around the terminal block. Especially avoid
directed airflow such as from an electric fan or air-conditioner vent.

• If connecting crimped terminals to the analog input terminals, use
insulated terminals for M3 screws with the size shown below.

-

32

Connect to the
measurement
object.

2

Using the screwdriver, loosen the terminal
block screws, insert the bare ends of the leads,
and tighten the screws.

Analog Input Terminals

1

When applying 4 - 20 mA input current

Connect a 250  shunt resistor as shown.

Tools required: Phillips screwdriver (for M3 screws)

(For details on instrumentation control equipment measure­ments, see p. 50 .)

The insulation colors of wires, which are
to be connected to the plus and minus
terminals, differ depending on countries
or manufactures. Check with the manu­facturer on the colors and connect them
according to instructions.

2.3 Connecting Measurement Cables to the Memory HiLogger

Connecting Measurement Leads or Thermocouples (for voltage or temperature, respectively)

Connect the voltage and temperature measurement (thermocouple) leads to
the analog input terminals.

K,E thermocouples experience a physicalphenomenon known as short
range ordering, which can prevent accurate measurement within the
range of 250°C to 600°C.
Please choose a sensor after checking with the manufacturer of the
thermocouple you intend to use.

2.3 Connecting Measurement Cables to the Memory HiLogger

Measurement
Object

Memory
HiLogger

Connection
Cable

P1 White (H)
P1 Red (L)

P2 Yellow (H)
P2 Black (L)

P3 Green (H)
P3 Blue (L)

P4 Gray (H)
P4 Brown (L)

Ends of the 
9641 Connection Cable

(connects to Memory HiLogger common ground)

Shield

Connect the other end of
the cable to the pulse
source(s) to be mea­sured.

Pulse Input Connector

1

2

Connecting to the Pulse Input Connector

To avoid electric shock and short circuit accidents or damage
to the instrument, pay attention to the following:

• The ground terminal for the
optional 9641 Connection
Cable is not isolated from
the Memory HiLogger's
ground (chassis ground).
Therefore, if the measure
ment object connects to
AC, it should have a grounded, polarized plug, and be con
nected to the same power outlet as the Memory HiLogger’s
AC adapter.
If the Memory HiLogger and measurement object are con­nected to different mains circuits, or if an ungrounded
power cord is used, the potential difference between the dif
ferent grounding paths may result in current flow through a
connection cable that could damage the measurement
object or Memory HiLogger.

• The input voltage range limits are 0 to +10 V. If these limits
are exceeded, the instrument could be damaged and per
sonal injury or death could occur, so do not attempt mea­surement.



33

2

Chapter 2 Measurement Preparations

-

-

3

-

-

Connecting the Optional Model 9641 Connection Cable
(for Pulse Signal Input)

Connect the optional 9461 connection cable to the pulse input connector.

For safety, we recommend using only Hioki’s connection cable
(measurement lead cable).

34

Right Side

Turn the power
switch on ( ).

If the " " indicator is not displayed, the instrument is not being powered
from the AC line. In this state, the battery charge will be depleted if measuring
for a long time, and measurement may be interrupted. Verify that the AC
adapter is securely connected to an AC power source and to the instrument.

Turning Power On

Turn the power
switch off ( ).

The installed battery pack is charged whenever the AC adapt­er is plugged into a power outlet, even when the Memory
HiLogger is off. In addition, providing there is some remaining
battery charge, waveform data and the setting configuration
are memorized whenever the Memory HiLogger is turned off,
so that when the Memory HiLogger is turned back on, the
same operating state is displayed.

Verify that the instrument and peripheral devices
are correctly connected.

Turning Power Off

Execute zero-adjust 30 minutes after turning power on (p. 35).

Initial screen

The power supply icon appears
near the bottom right corner of
the screen (p. 19).

2.4 Turning the Power On and Off

2.4 Turning the Power On and Off

Using the AC Adapter

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.
Rated supply voltage is 100 to 240 VAC
(Voltage fluctuations of ±10% from the rated supply voltage
are taken into account.)
Rated supply frequency is 50 or 60 Hz.



35

Turn on the power and wait for 30 minutes to stabilize the internal
temperature of the Memory HiLogger.

With the Waveform or [CH] screen displayed, press and hold these
keys simultaneously for one second.

The Zero Adjust dialog appears.

From the Setting screen

Select [Zero Adjust].



Apply

1

2

Zero adjustment is executed.

(simulta­neously)

2.5 Zero Adjustment

2.5 Zero Adjustment

Zero adjustment corrects for voltage offset at the input terminals, so that Mem­ory HiLogger measurements are relative to zero volts.
Perform the zero adjustment procedure when using the instrument in a loca­tion where the ambient temperature is markedly different.

2

Chapter 2 Measurement Preparations

3

Any zero-adjust setting is cleared upon system reset (p. 125).

36

2.5 Zero Adjustment

37

Is the insulation of the measure­ment cable to be used damaged,
or is bare metal exposed?

1

2

Peripheral Device Inspection

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

Metal
Exposed

No Metal
Exposed

Do not use if damage is
present as you could re­ceive an electric shock.
Replace the damaged
items.

To

If damage is evident, 
request repairs.

Yes

Is damage to the instrument
evident?

Instrument Inspection

When turning power on

Does the HIOKI logo appear
on the screen?

No

2

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

Is the Waveform or Setting
screen displayed?
(When power is turned on the
first time after purchase, the Set­ting screen should appear.)

No

Yes

The instrument may be
damaged internally.
Request repairs.

Nothing appears, or
the display is abnormal

Yes

Inspection complete

3.1 Pre-Operation Inspection

Setting before 
Measurement Chapter 3

3.1 Pre-Operation Inspection

3

Chapter 3 Setting before Measurement

3

38

Record

Display the Setting screen

Configure measurement settings

Connect

Configure

Connect measurement cables (p. 31).

Configure input channels (p. 49)

Analyze

Analyze recorded data on the Waveform screen (p. 81).
Calculations can be applied to measured data (p. 113).

Save

Select and save data (p. 91).

When configuration is finished, start recording (p. 22).

Reload stored

settings (p. 103)

[Setting] screen

[Setting] screen

[CH] screen

Configure data

saving

[Setting] screen

(as needed)

Configure data recording settings (p. 42)

3.2 Operating Flow Overview

3.2 Operating Flow Overview

Measurement Configuration (Setting Screen)

. Must be set before measuring.

Make other settings 
as needed.

 Save automatically

while measuring
(p. 46)

 Reloading Settings

(p. 103)

 Saving Settings

(p. 102)

 Enter a title for mea-

surements (p. 60)

 Filter out noise

(p. 45)

 Perform numerical

calculations (p. 113)

 Record by timer

(p. 76)

Configure recording settings: [Setting] screen

 Data recording (acquisition) interval (p. 42)*
 Display time base (time per horizontal division) (p. 43)
 Recording start/stop method (p. 44)*
 Recording length (time span) for repeated or one-time re-

cording (p. 45)*

Horizontal Axis (Time Axis) Settings

Before measuring, configure the measurement settings on the [Setting] and

[CH] screens. A brief operational description of the currently selected (high

lighted) setting item appears at the bottom of the screen.

Three recording methods are available. Timed recording, which record
between specified start and stop times, can be used in combination with these
methods

Recording Method Description

Normal Recording

Continuous Recording

Repeat Recording

(p. 76).

Records for the specified recording length beginning
when measurement starts (Cont: Off).

Records continuously beginning when measurement
starts (Cont: On).

Records repeatedly for the specified recording length
(time span) (Repeat: On).

39

3.2 Operating Flow Overview

-

3

Chapter 3 Setting before Measurement

3

40

Make other settings as needed.

 Entering channel comments (p. 60)
 Selecting channel display colors (p. 56)
 Setting the display range

Specifying the display position (p. 56)
Specifying upper and lower display limits (p. 57)

 Recording specific events (triggering) (p. 68)
 Setting alarm output (alarm function) (p. 73)
 Setting Unit Conversion (Scaling) (p. 58)
 Switching the monitor display (p. 24)

Configure input channel settings: [CH] screen

 Voltage measurement (p. 50)
 Temperature measurement 

(p. 51)

 Integration (pulse count) (p. 53)
 Revolution measurement

(p. 54)

Input Channel Settings

3.2 Operating Flow Overview

41

 Specify the recording interval (data acquisition

interval) (p. 42)

 Specify the display time base (time per hori-

zontal division) (p. 43)

 Enable digital filtering (noise suppression)

(p. 45)

Waveform Screen

Horizontal Axis Settings

 Voltage measurement (p. 50)
 Temperature measurement (p. 51)
 Integration (pulse count) (p. 53)
 Revolution measurement (p. 54)
 Alarm settings (p. 73)

 Setting the display range

Specifying the display position (p. 56)
Specifying upper and lower display limits
(p. 57)

 Select the alarm display type (p. 84)
 Eject (replace the CF card/USB flash drive

during real-time save operation)(p. 48)

 Displaying any point in time (Jump function) 

(p. 83)

Waveform Display Settings

Input Channel Settings

About Channel Settings

Pressing the CH / keys selects channel setting and gauge display items.
However, while measurement data is displayed, such changes affect only those
channels selected (by a check mark [ ]).

3.2 Operating Flow Overview

Measurement Configuration (Waveform Screen)

Certain setting items are available on the Waveform screen. Setting details are
the same as for those on the Setting screen.

3

Chapter 3 Setting before Measurement

3

42

Move to a setting item.

Apply

Open the setting options
for the item to be set.

Select from the listed 
options.

1

2

Select the [Setting] screen.

Select from the [Interval] setting options.

Setting options:

10ms, 20ms, 50ms, 100ms, 200ms, 500ms, 1s, 2s, 5s,
10s, 20s, 30s, 1min, 2min, 5min, 10min, 20min, 30min, 
1h ( default setting)

Some waveform peaks may not be displayable with
certain interval settings.
For example, when the [Interval] is 1 s and the [Time/
DIV] (time base) is 5 s.

5s/div

1s

Peak

Broken wire detection is automatically disabled when
the interval is set to 10, 20 or 50 ms (p. 51).

3.3 Setting Configuration 1 – Recording Settings

3.3 Setting Configuration 1 – 

Recording Settings

Configure the horizontal axis and recording settings on the [Setting] screen.
To save data while measuring, auto save must be enabled beforehand (p. 46).

Specify the Recording Interval

Select the data acquisition interval to suit your measurement objectives. Note
that shorter recording intervals restrict the maximum recording time.

3.3 Setting Configuration 1 – Recording Settings

1 div

Select from the [Time/DIV] setting options.

Setting options:

100ms, 200ms, 500ms, 1s, 2s, 5s, 10s, 20s, 30s, 
1min, 2min, 5min, 10min, 20min, 30min, 1h, 2h, 5h,
10h, 12h, 1day [/DIV] ( default setting)

When auto save is enabled for waveforms, 100, 200 and
500 ms settings are automatically changed to 1 s when
measurement starts, and the shorter values cannot be se­lected while measuring.

Setting the Display Time Base (horizontal axis magnification, set as needed)

Displayed waveforms can be expanded or compressed
along the horizontal axis. Shorter setting values corre­spond to greater magnification. This setting can be
changed both during and after measurement without
affecting acquired data

Available display time base settings depend on the selected recording interval.
Horizontal axis display options are affected when the recording interval is changed
after measuring, because the options for expanding (or compressing) the displayed
axis depend on the recording interval used when measuring.

Hori-

zontal

axis

10 20 50 100 200 500 1 2 5 10 20 30 1 2 5 10 20 30 1

100ms
200ms
500ms
1s
2s
5s
10s
20s
30s
1min
2min
5min
10min
20min
30min
1h
2h
5h
10h
12h
1day

  
   
   
     
      
      
        
         
         
           
            
            
              
               
               
                 

                  
                  
                  
                  
                  

[ms] [s] [min] [h]

: Selectable, ×: Not selectable, : Not selectable while measuring

Recording interval

× × × × × × × × × × × × × × × ×

× × × × × × × × × × × × × × ×
× × × × × × × × × × × × × × ×

× × × × × × × × × × × × ×

× × × × × × × × × × × ×
× × × × × × × × × × × ×

43

(p. 83).

× × × × × × × × × ×

× × × × × × × × ×
× × × × × × × × ×

× × × × × × ×

× × × × × ×
× × × × × ×

× × × ×

× × ×
× × ×

3

Chapter 3 Setting before Measurement

3

×

44

Continuous
Recording

Repeat Re­cording (speci­fied lengths)

Start
Measurement

Stop
Measurement

To record continuously,
Enable continuous recording (set

[Cont] to

[On]). (default setting)

Recording continues until you press the START/STOP
key, or until a “stop trigger” event occurs.
When auto save is enabled for measurement data,
the saving method depends on whether [Deleting] or
[Split Save] (segmented save) is selected (p. 46).

To record for a specified length (time span),

1 Set [Cont] to [Off].
2 Specify the duration of one recording length

(time span).

Setting options:
d (days) 0 to 499, h (hours) 0 to 23, 
min (minutes) 0 to 59, s (seconds) 0 to 59

1

2

Recording proceeds for the specified length. Record­ing stops early if you press the

START/STOP key be-

fore the recording length has elapsed, or if a “stop
trigger” event occurs.

Change 1’s digit

Change 10’s digit

Maximum recording length
and data samples

Indicates the maximum record­ing time to internal memory, and
the maximum number of data
samples. These values are limit­ed by the specified recording
length and the number of mea­surement channels used.

See: Appendix 6, "Maximum

Recordable Time" (p.
A11)

3.3 Setting Configuration 1 – Recording Settings

Selecting the Recording Start/stop Method

Specify how you want recording to start and
stop. The following methods are available.

• Record continuously: 
Record continuously between starting and stop­ping measurement.

• Specified length (time span): 
Record only for a specified time span (can be set
to automatically repeat)

(p. 45)

3.3 Setting Configuration 1 – Recording Settings

Repeated recording

On

Off

Select from the [Repeat] setting options.

Setting options:( default setting)

Off

Recording stop after one recording length (time
span).

On Recording restarts after the specified recording

length has elapsed or after recording is stopped
by a “stop trigger” event. To manually stop re­cording, press the START/STOP key.

Dead time

When repeating recording is enabled ([Repeat] set to [On])
After a recording length has elapsed, some “dead time” is
needed for internal processing before recording can re­sume.
Because recording is not available during the dead time,
enable continuous recording (set [Cont] to [On]) if you
need to record without data loss.

Recording

Select from the [Filter] setting options.

Setting options:60Hz, 50Hz, Off ( default setting)

fc: cut-off frequency

When the 60 Hz digital filter is selected, optimum line noise
suppression occurs when the recording length is between
two seconds and one hour.
Noise is suppressed with either 50 Hz or 60 Hz filter selec­tions, although the measurement timing difference between
channels may be increased, depending on the recording
length. Disabling the filter (set to Off) minimizes such timing
differences (to less than 1 ms between channels).

When disabled (set to Off), broken wire detection is also
disabled (p. 51).

Set the Recording Length for Repeated or One-time Recording

Select whether recording should be resumed
after the specified recording length has
elapsed or after recording is stopped by a
“stop trigger” event.

45

3

Chapter 3 Setting before Measurement

3

Enable Digital Filtering (noise suppression) (as needed)

Electrical noise mixed with input signals can
be removed by digital filtering. Noise suppres­sion is most effective for longer recordings,
where it can provide higher measurement
accuracy and less scattering. Set as needed to
suit your measurement environment.

See:"Cut-off frequency" (p. 141)

46

3.3 Setting Configuration 1 – Recording Settings

Automatic Saving

Measurement data can be automatically saved to a CF card or USB flash drive
while measuring.
The available types and formats of automatically saved data are as follows.

Saved
Content

Waveform
data only

Calcula­tion results
only *1

Waveform
data and
calcula

­tion results
*1

Setting

Waveform
(realtime)

CSV
(realtime)*2

Calc
(post meas.)

Waveform +
Calc

CSV + Calc*2

File 
Extension

.MEM

.CSV

.CSV

.MEM,
.CSV

.CSV,
.CSV

Description

Waveform data is saved to the CF card while re­cording.

Waveform data is saved in CSV text format while
recording. Saved data cannot be reloaded in the
HiLogger.

After recording, calculation results are saved to
the CF card.
When [Repeat] is enabled ([On]), calculation re­sults for each recording are included in the record­ed data file.

Waveform data is saved while recording, and cal­culation results are saved when recording finishes.

Waveform is saved in CSV text format while re­cording, and calculation results are saved when
recording finishes.
Saved data cannot be reloaded in the HiLogger.

*1.Numerical calculation settings must be made before starting recording (p. 113).
*2.The [CSV (real time)] and [CSV + Calc] settings are not available when the record

interval is 10ms or 20ms.

note that the number of rows that can be loaded at one time is limited

Also, when opening a CSV file in a spreadsheet program,

(p. A7).

47

1 Select which content to save from the [Auto

Save] settings.

Setting options: Off*, Waveform(realtime), CSV(re-

altime), Calc(post meas.), Waveform + Calc, CSV
+ Calc (

 default setting)

When [Waveform(realtime)], [CSV(realtime)],

[Waveform + Calc], [CSV + Calc] is selected

2 (As needed) You can enter a file name for the

waveform files.

See: 3.6, "Entering Comments" (p. 60)

If left blank, file names are created automatically.

See: Appendix 2, "File Naming" (p. A7)

3 Select the removable storage priority (CF card

or USB flash drive)

4 Select the [Deleting] method for saving data when

the CF card or USB flash drive becomes full.

Setting options:( default setting)

5 Select whether to create a new file for each

recording length, or to create new files at
specified intervals (using

[Split Save]).

Setting options:( default setting)

Off* Saving stops when the CF card or USB flash

drive becomes full.

On When space on the CF card or USB flash drive

declines to a certain level when starting or dur

­ing automatic saving, the oldest file is deleted.
If the file cannot be deleted, saving stops. Only
waveform files can be deleted in this way.
Appendix 2, "File Naming" (p. A7)

Off* One file is created for each recording

length.

On Specify the length (time span) of saved

segments. A measurement data file is cre

-

ated for each segment.

Ref TimeSpecify a reference time and segment

length (time span). A file is saved after
each segment time span beginning at the
reference time.

1
2

3
4

[Split Save: On]

[Split Save: Ref Time]

Ref Time (reference time): 
0:0 to 23:59
Length (Segment length):
1, 2, 5, 10, 15, 20, 30 minutes,
1, 2, 3, 4, 6, 8, 12 hours, 1day

Segment length: Days (0 to

30), Hours (0 to 23), Minutes
(0 to 59)

When starting measurement,
the message “Sync fixed
time” is displayed until the re­cording interval synchronizes
with specified reference time.

Horizontal axis settings are in­hibited during automatic sav­ing of waveforms (p. 43).

5

3.3 Setting Configuration 1 – Recording Settings

3

Chapter 3 Setting before Measurement

3

Regardless of the split save setting, the file will be automatically
split when the file size nears 2 GB.

48

Move the cursor to [EJECT].

Execute

Insert a formatted removable 
storage.

Measurement data acquired while the de­vice was removed is automatically written.

See: Formatting: (p. 95)

Insertion: (p. 94)

Remove the USB flash drive (p. 94).

Right bottom of the screen

Move the cursor to 

[Unmount USB memory].

Execute

Move the cursor to [Yes].

Execute

Bottom of the screen

When both a CF card and USB flash drive are in­stalled and either is removed, the save destina­tion automatically switches to the remaining
media.

Execute

The media icon display will
change to the eject display.

3.3 Setting Configuration 1 – Recording Settings

Replacing Removable Storage During Real-Time Saving

During real-time saving, removable storage can be replaced without interrupting mea­surement. This procedure describes replacing a USB flash drive.

• If a storage device is not replaced within two minutes after selecting
"Yes" in the "Do you want to remove the USB memory/CF card?" con
firmation dialog, data may overflow internal memory and be lost.

• If a storage device is replaced during real-time saving, data is saved
to a new file.

• If measurement ends while the removable storage is ejected, even if a

removal storage is then inserted, the remaining data is lost. If
thi s o c cu r s, t he m ea su r em e nt d at a r e ma i ni n g o n t h e
instrument can be retrieved with the manual save function.

See: 6.3, "Saving Data" (p. 96).

-

49

Select the [CH] screen.

Move to a setting item.

Apply

Open the setting options
for the item to be set.

Select from the listed op­tions.

1

2

Level monitor (p. 24)

Use the CH / keys to change
the selected channel.

3.4 Setting Configuration 2 – Input Channel Settings

3.4 Setting Configuration 2 – Input Channel
Settings

Configure the input channel settings on the [CH] screen. You can make these
settings while viewing input signal amplitude on the level monitor.
There are two general types of input signals, analog channels CH1 – CH10
and pulse channels P1 to P4. The analog channels can be used to measure
voltage and temperature (with thermocouples), and the pulse channels can be
used for pulse counting (integration) and revolution measurement.

Analog channels Pulse channels

"Voltage Measurement Settings" (p. 50)

"Temperature Measurement Settings" (p. 51) "Revolution Measurement Settings" (p. 54)

Settings can be changed while viewing all channel settings on the [Range],
[Scaling], [Trig & Alm], and [Comment] screens.
In this example, settings are made on the [CH] screen while viewing the level
monitor.
You can specify recording criteria with the input settings to control recording,
or to output alarm signals. See
ments (Triggering, Alarm and Timer)" (p. 67) for details.

"Integration (Count) Measurement Settings"
(p. 53)

Chapter 4, "Specifying Criteria for Measure-

3

Chapter 3 Setting before Measurement

3

50

1 Select a channel (CH 1 to CH 10) for the

[Channel] setting contents.

2 To enable measurement on the channel,

select On to display the check mark (

).

3 Select [Voltage] for the [Input] (input type)

setting.

4 Select the appropriate measurement ampli-

tude range for the [Range] setting.

Setting options:

100mV, 1V, 10V, 20V, 100V, 1-5V 

( default setting)

1

2

3

4

: On
: Off

Instrumentation and Control Device Measurements

For instrumentation control signal measurements, select [1-5 V]. This range corre­sponds to the 4-20 mA output standard for instrumentation control. This setting automat­ically sets 1- and 5-volt lower and upper limits, respectively, in the 10 V range.
Measurement accuracy is ±10 mV ±5 mV. To measure 4-20 mA current, connect a 250
shunt resistor between + and – analog input terminals (p. 32).

Use the scaling function to scale measurements to any arbitrary unit value for display (p.

58).

3.4 Setting Configuration 2 – Input Channel Settings

Voltage Measurement Settings

Configure these settings for each voltage measurement channel.

3.4 Setting Configuration 2 – Input Channel Settings

1 Select a channel (CH 1 to CH 10) for the

[Channel] setting contents.

2 To enable measurement on the channel,

select On to display the check mark (

).

3 Select [Tc] for the [Input] (input type) set-

ting.

4 Select the type of thermocouple to be

used.

Setting options:

K, J, E, T, N, R, S, B ( default setting)

5 Enable or disable [Burn Out].

Setting options:( default setting)

6 Select the reference junction compensa-

tion (RJC) method for the [RJC] setting.

Setting options:( default setting)

Off

Do not detect broken (disconnected)
wires.
Normally when the thermocouple is dis­connected, the value will fluctuate, etc.
and will not be stable.

On Detect broken wires.

(This setting is available only when the re­cording interval is at least 100 ms, and the
50 Hz or 60 Hz digital filter is enabled.)
When the wires are disconnected,
“OVER” will be displayed as the measure

-

ment value.

Int

Use the Memory HiLogger’s internal com­pensation. Measurement accuracy is the
sum of the temperature measurement ac

-

curacy and the RJC accuracy.

Ext Use an external RJC method instead of

the Memory HiLogger’s internal compen

­sation. Memory HiLogger measurement
accuracy is equivalent to the temperature
measurement accuracy.

12

: On
: Off

Temperature Measurement
Range
(Depends on thermocouple type)

JIS C 1602-1995

With type B, the display shows 0
to 400°C, but accuracy is not
guaranteed.

K

-200°C to 1350°C

J

-200°C to 1200°C

E

-200°C to 1000°C

N

-200°C to 1300°C

T

-200°C to 400°C

R

0°C to 1700°C

S

0°C to 1700°C

B

400°C to 1800°C

34 5 6

Temperature Measurement Settings

Configure these settings for each temperature measurement channel.

51

3

Chapter 3 Setting before Measurement

3

52

[C]

1000

400

0

-200

-1000

If Thermocouple Measurement Range is Exceeded

Example: Using a type T thermocouple with range -200 to +400°C
When measurements are outside of the range of the thermocou­ple, the waveform saturates and clings to the top of the screen as
shown at the right.
The numerical measurement values are displayed as “OVER” and
the cursor measurement value, calculation values and saved data
are handled as full-scale output values of the 16-bit A/D converter.

See: "LR8431-20 Measurement Values" (p. A12)

About Burn Out Detection

Broken (disconnected) thermocouple wires are detected using a tiny (300 nA) sensing
current. The thermal equivalent of the thermoelectromotive force (thermocouple resis­tance () times the 300 nA sensing current) is added to the measured value. However,
measurement errors can occur if the thermocouple wire is long or if the wire itself has a
large resistance, in which cases broken wire detection should be disabled (set to Off).

3.4 Setting Configuration 2 – Input Channel Settings

53

1 Select a channel (P 1 to P 4) for the [Chan-

nel] setting contents.

2 To enable measurement on the channel,

select On to display the check mark (

).

3 Select [Count] for the [Input] (input type)

setting.

4 Select the measurement method from the

[Count Mode] settings.

Setting options:( default setting)

5 Select the basis of measurement from the

[Slope] settings.

Setting options:( default setting)

Add* Counts the number of pulses acquired

from the start of measurement.

Inst Counts the number of pulses acquired dur-

ing each recording interval. The pulse
count is reset at the beginning of each re

-

cording interval.

 Counts the number of L - H transitions.
 Counts the number of H - L transitions.

Totalized

[Add]

Instantaneous

[Inst]

0 V

L

H

12

: On
: Off

345

3.4 Setting Configuration 2 – Input Channel Settings

Integration (Count) Measurement Settings

Configure these settings for each pulse channel receiving input from a pulse
output device such as a watt-hour or flow meter.
Use the scaling function to display integrated pulse counts as the correspond­ing physical units (such as Wh or VA) of the measurement parameter (p. 58).

3

Chapter 3 Setting before Measurement

3

• When using the scaling function, the integrated pulse count can
be displayed after conversion to the measurement target’s prop
erty (Wh, VA, etc.). (p. 58)

• The count will be saturated when the pulse count exceeds
1,073,741,823. If there is a possibility that this number may be
exceeded, it is recommended to set the integration mode to
instantaneous and tabulate the results later with Excel
ilar application.

®

or a sim-

-

54

Change 1’s digit

Change 10’s digit

0 V

L

H

1 Select a channel (P 1 to P 4) for the [Chan-

nel] setting contents.

2 To enable measurement on the channel,

select On to display the check mark (

).

3 Select [Revolve] for the [Input] (input type)

setting.

4 Set the [Pulse/Rev] setting to the number of

pulses per revolution.

Setting options: 1 to 1000 ( default setting)
The range is automatically determined by this set­ting.

5 Select the basis of measurement from the

[Slope] setting.

Setting options:( default setting)
 Counts the number of revolutions based on 

L - H transitions.

 Counts the number of revolutions based on 

H - L transitions.

5000 r/s (n=1)

12

: On
: Off

3

45

3.4 Setting Configuration 2 – Input Channel Settings

Revolution Measurement Settings

Configure these settings for each pulse channel on which you will be counting
pulses corresponding to revolutions, such as output from a rotary encoder or
tachometer. The revolution measurement is obtained by counting the number
of pulses input per second. The scaling function can be used to display the
results of converting measured values to physical properties of the measure
ment target. (p. 58).

-

55

0 10 ms 20 ms 1 s 2 s

Pulse Count

P200P100P2P10

Pulses per revolution

Pulse count at t

s

minus pulse count at (t -1)

s

r [rps] =

(rps: Revolutions per second)

r

t=2

=

4

2000  1000

= 250 [rps]

Pulses per revolution

Pulse count at t

s

minus pulse count at (t -0.01)

s

r [rps] = x 100

3.4 Setting Configuration 2 – Input Channel Settings

Revolution Measurement Theory

Pulse count is measured using the Memory HiLogger’s 
internal 10 ms sampling interval.

The revolution rate (r) per second during time ts is obtained
by dividing the number of pulses from (t-1) to
ber of pulses per revolution.

Example: Pulses per revolution = 4

When the number of pulses counted in one second is

= 1000 c,

P

100

and the number of pulses counted in two seconds is P
= 2000 c,
then the revolution rate (rps) at t=2s (r

When time ts is less than one second

The pulse count at (t –1)s (whole seconds) cannot measured, so 100 times the pulse count
between (t -0.01)
rate.
As a result, revolution measurements when t is less than one second are scattered.

and ts serves and the pulse count for one second to obtain the revolution

s

ts by the num-

) can be obtained.

t=2

200

3

Chapter 3 Setting before Measurement

3

56

Select from the waveform display color set­ting options.

Setting options:Off ( x ), 24-color

Zero Position: 50%

25%

0 V

100%

0%

50%

0 V

25%

Normal Display

Magnified

Display (x2)

1 Select [Position] for the [Type] setting options.
2 Select from the [Zoom] setting options.

Setting options:

x100, x50, x20, x10, x5, x2, x1, x1/2
( default setting)

3 Set the desired zero position [0 pos] as a

percentage of screen height.

Setting options:

-50 to 150% (with x1 magnification)

1

2
3

Change 1’s digit

The expansion/com­pression range de­pends on the selected
magnification.

3.5 Display Settings

3.5 Display Settings

Configure how each channel is displayed, as needed. These settings can be
changed on the Numerical/Waveform screen after measurement.

Selecting Waveform Display Color

Different display colors can be selected for each input channel waveform.

Specifying Vertical Display Range by Magnification and Zero Position (vertical axis expansion/compression)

The vertical display range and zero position
can be specified for each channel.
The magnification setting determines the
displayed range. Waveforms are expanded
or compressed vertically relative to the cen
ter of the screen.
Magnification and zero-position settings are
ignored when the display range is defined
by upper and lower limits.
In the 1-5V range of a voltage measure­ment and in integration measurement,

[Position] cannot be specified.

-

57

50%

100%

0%

50%

100%

50%

100%

0%

0%

100%

50%

0V

Zero Position: 0%

Display range

(Zoom: x1)

Measurement
range

Default Setting

Input type Zoom

Zero

position

Input type Zoom

Zero

position

Voltage

x1 50

Integration (Count)



Temperature (Tc)

x20 0

Revolution (Revolve)

x1 0

10

-10

0

5

-5

0

1 Select [Upper/Lower] for the [Type] setting

item.

2 Specify the [Upper] value for the top of the

display.

3 In the same way, specify the [Lower] value

for the bottom of the display.

The display range and scaling settings are in­terlinked.

The range is not automatically optimized when
the upper and lower limits are set on the wave­form screen.

1

2
3

Default Setting

Input type Range

Voltage

-50m to 50m

Temperature (Tc)

0 to 100

Integration (Count)

0 to 5000

Revolution (Revolve)

0 to 5000

After making the settings,
press [OK].

3.5 Display Settings

Specifying the Vertical Display Range by Upper and Lower Lim­its (expansion/compression)

The vertical display range can be defined
by upper and lower limits.
Using this method, the voltage range does

not need to be selected because the opti
mum range is selected automatically for the
display. However, upper and lower limit set
tings are ignored when magnification and
zero position are enabled to define the dis
play range.
As the upper and lower limits in the 1-5V
range are fixed, they cannot be changed.

3

Chapter 3 Setting before Measurement

3

-

-

-



58

Normal Display

(Off)

Scaling Enabled

A

mV

1 For the [Cond](condition) setting, select the

desired numerical notation.

Setting options:( default setting)

2 Move to the next item to the right, and

select the scaling method.

Setting options:( default setting)

3 Enter the [Unit] name on the comment entry

screen.

See: 3.6, "Entering Comments" (p. 60)

4 Ratio: Enter the conversion ratio and offset.

2-pt: Enter the values at two points before

and after conversion.

Dec Displays converted values using fixed-point

notation

Exp Displays converted values using floating-

point notation

Off* Scaling is disabled.

Ratio* Convert by specifying the ratio of physical

units per volt of input signal (conversion ra­tio), offset, and the name of the units.

2-pt Convert by specifying the input signal volt-

age at two points, the physical unit values at
those points, and the name of the units.

12 3

Conversion Ratio Setting

Conversion Ratio Setting

2-Point Setting

2-Point Setting

[Cond: Exp]

[Cond: Dec]

4

A

H

A

L

VLVH[V]

Actual measurement values (input values)

Converted unit values

Conversion Ratio Setting Method

Units (eu)

Offset

Slope (Conversion
ratio: eu/v)

2-Point Setting Method

Units: [A]
Param 1:V

H

value AH value

Param 2:V

L

value AL value

Example

V

H

:High value

A

H

:Converted

high value

V

L

:Low value

AL:Converted

low value

Combining scaling and display positioning (upper/lower limits)

To use both scaling and upper/lower display limits, set the scaling first, then upper/lower limit val­ues. With scaling enabled, the upper and lower limit setting ranges are constrained as follows:

-9.9999E+19  Setting value-1.0000E-19, Setting value = 0, 
+1.0000E-19  Setting value +9.9999E+19

3.5 Display Settings

Converting Units (Scaling function)

Use the scaling function to convert input
voltage to the physical units of the measure­ment parameter for display, such to convert
voltage input for display as electrical current.
Converted values can be displayed in fixed­or floating-point notation.

Setting Analog Channel or Pulse Channel (Revolution) Scaling

59

1 For the [Cond] (condition) setting, select the

desired numerical notation.

Setting options:( default setting)

2 Enter the [Unit] name on the comment entry

screen.

See: Entering Comments (p. 60)

3 Specify the physical units per pulse or the

number of pulses per fundamental unit (for
example, if 1 c = 1 pulse, select [1 pulse]).

The settings for physical units per pulse and
pulses per fundamental unit are interlinked.

Dec Displays converted values using fixed-point

notation

Exp Displays converted values using floating-

point notation

Off* Scaling is disabled.

1

3

2

Using fixed-point 
notation

Using floating-point
notation

Scaling Setting Example

For integration with a 50,000 pulse/kWh watt-hour meter:
Cond: Dec
Units: kWh
1kwh=50000 pulse

For integration with a 10 liter/pulse flow meter:
Cond: Dec
Units: L
1 pulse=10L

3.5 Display Settings

Setting Pulse Channel (Integration) Scaling

Integrated pulse values can be converted for display as physical units of the mea­surement parameter (such as Wh or VA).
Pulse output devices determine the amplitude per pulse in physical units, or the num­ber of pulses per fundamental unit (for example, per kWh, liter or m3).

3

Chapter 3 Setting before Measurement

3

60

Select the [CH] screen.

Select the field to enter
the comment.

1

2

Apply

The character entry screen
appears.

3

Select the characters to
enter

To enter a space, select a
blank character.

Apply

Characters appear in the entry
field as you select them.

Entry field

Select [OK]

Accepts your entry and returns to the
[Comment] screen.

Navigate the entry field

Finished with entry

3.6 Entering Comments

3.6 Entering Comments

Comments of up to 40 characters can be entered as a title for the measure­ment data, and as a label for each input waveform.
Titles and comments are displayed on the waveform screen (Comments
appear only when [Value+Cmnt] display is selected.
Titles can be entered on the [Setting] and [Comment] screens, and comments
can be entered on the [CH] and [Comment] screens. This description enters a
comment on the [CH] screen.

The following characters are converted as follows when saved to a text file.

Entered character

Converted plain
text equivalent

^2 ^3 ^u ~o ~c ~e

Operating Panel

Only the keys displayed on the operating panel are en­abled.

• List (WAVE/D ATA key)

Measurement related terms are registered in the list
beforehand.

• Hist (History, SET key)

You can select previously entered terms from the pick
list.

• Clear (FILE key)

Clears all entered characters.

• Char Input (CH

key)

Switches between the pick list and character selection
frames.

• / (Cursor up/down key) 

Selects from the pick list frame.

• Select (ENTER key) 

Accepts the item selected in the pick list.

• Cancel (ESC key) 

Cancels entry.

• <</ >> (SCROLL/CURSOR left/right key) 

Move input position.

• BS (SCROLL/CURSOR middle key) 

Deletes one character.

• OK (START/STOP key)

Accepts entry.

The operating panel depicts
the functions of Memory
HiLogger's operating keys.

3.6 Entering Comments

61

3

Chapter 3 Setting before Measurement

3

62

[Range] screen

[Scaling] screen

Input Types

( : Voltage, : Temperature, : Integration, : Revolution, : Alarm)

[Trig & Alm] screen

Input Types

( : Voltage, : Temperature, : Integration, : Revolution, : Alarm)

[Comment] screen

3.7 Viewing All Channel Settings in a List

3.7 Viewing All Channel Settings in a List

All channel settings can be viewed and changed in the list. You can copy
batches of settings between channels.

3.7 Viewing All Channel Settings in a List

Select the screen showing the channel to copy.
[Range], [Scaling], [Trig & Alm]

Select [Batch Proc].

1

2

Apply

The selected items are displayed.

3

Select the desired action.

Apply

• [Copy settings of CH1 to all

other analog channels] : 

Copy the settings from channel
1 to channels 2 through 10.

• [Copy settings of P1 to all

other pulse channels] : 

Copy the settings from channel
P1 to channels P2 through P4.

Except for the following, the settings dis­played on the screen are copied.

• Waveform display color

• Input type (although this can also be
copied from the [Range] screen, p. 62 )

This setting is only available on the [Range] screen.

Select [Batch Proc].

1

2

Apply

The selected items are displayed.

Select the desired action.

Apply

• [Set all analog channels color off]:

Sets all channel waveforms to be hidden.

• [Set all analog channels color default]:

Sets all channel waveform colors to their defaults.

Batch Copying Channel Settings

The CH1 and P1 channel settings can be copied to other channels.

63

3

Chapter 3 Setting before Measurement

3

Batch Setting Waveform Display/Hide and Waveform Color Set­tings for All Channels

The display of all waveforms can be hidden, and all waveform display colors
can be set to defaults.

64

Select which screen you want to initialize, 
from the [Range], [Scaling], [Trig & Alm] screens.

Select [Batch Proc].

1

2

Apply

The selected items are displayed.

3

Select [Reset all settings in

this page].

Apply

This setting is only available on the [Range] screen.

Select [Batch Proc].

1

2

Apply

The selected items are displayed.

Select the desired action.

Apply

3.7 Viewing All Channel Settings in a List

Initializing Settings (to factory defaults)

All settings in the current window are reset to their factory default values.

Aligning Zero Positions on the Grid

Analog channel waveforms can be positioned evenly along the vertical grid,
with CH1 at the top. ([Range] screen only)
This functionality is valid only for channels with the same input time as CH1
and for which [Display range] has been set to [Setting: Position].
CH1 to CH10 waveforms can be displayed together with each allotted 5% or
10% of the screen height.



65

CH10 0 V

100%

0%

50%

CH1 0 V

This setting is only available on the [Scaling] screen.

Select [Batch Proc].

1

2

Apply

The selected items are displayed.

Select the desired action.

Apply

3.7 Viewing All Channel Settings in a List

Alignment Example (with CH1 zero-position aligned at 95% and occupying 10% of
vertical screen height)

Channel Zero-position (%)
CH1 95
CH2 85
CH3 75
CH4 65
CH5 55
CH6 45
CH7 35
CH8 25
CH9 15
CH10 5

Display Celsius (°C) temperature values as Fahrenheit (°F)

All measured temperature values can be converted at once from Celsius to
Fahrenheit units.
The conversion is simultaneously reflected appropriately on all scaled values.
To revert from Fahrenheit units to Celsius, disable (set to Off) the scaling func­tion (p. 58).

3

Chapter 3 Setting before Measurement

3

66

3.7 Viewing All Channel Settings in a List

Specifying Criteria for 

Trigger criteria met

T

T

Pre-trigger

Start (Start trigger)

Stop (Stop trigger)

Alarm

Timer

T T

Measurements (Triggering,

67

Alarm and Timer)

You can set recording to start and stop under specific criteria (start/stop triggers),
and to output alarm signals. You can also set specific times to start and stop record
ing, using the Timer function.
Triggering is the process of controlling the start and stop of
recording by specific signals or conditions (criteria). When
recording is started or stopped by a specific signal, we say the
trigger is "applied" or "triggering occurs".
In this manual, indicates a "trigger point", as the time at
which a trigger is applied.

Criteria can be specified for the following event trigger types.

Trigger Type Description

Start Trigger

Stop Trigger

Pre-trigger

Trigger
Source

External 
Trigger

Alarm

Timer Records at a specified date and time.

Recording starts when the specified Start Trigger crite­ria are satisfied.

Recording stops when the specified Stop Trigger crite­ria are satisfied. When [Repeat] is enabled (set to
[On]), recording restarts automatically.

Records data acquired during a specified period prior
to each trigger event.

Various trigger criteria can be combined with logical
AND/OR operations for each channel.

Triggering can be applied by an external signal at the
EXT.TRIG input terminal.

An alarm signal can be output when any specified cri­teria are met.



Chapter 4

Setting

Screen

[CH]/
[Trig & Alm]

[CH]/
[Trig & Alm]

[Trig & Alm]

[Trig & Alm]

[Trig & Alm]

[CH]/
[Trig & Alm]

[Setting]

Ref.

(p. 68)

(p. 68)

(p. 72)

(p. 71)

(p. 71)

(p. 73)

(p. 76)

-

3

4

Chapter 4 Specifying Criteria for Measurements (Triggering, Alarm and Timer)

Set trigger criteria for individual channels on the Channel [CH] screen, and set trig­ger and alarm settings for all channels on the [Trig & Alm] screen (p. 75).

68

[  ]

[ ]

T T

Trigger Level

Input

Trigger Slope

T

T

Upper

Threshold

Lower

Threshold

T

T

Upper

Threshold

Lower

Threshold

Enable the Trigger Function

Select the trigger to use, and press the

ENTER key. Press it again when the

confirmation message appears, and
you are ready to set trigger criteria (at
the same time, the [Trigger] setting on
the [Trig & Alm] screen turns on).

Set trigger criteria

Select the trigger criteria to be applied.

The [Timming] setting on the [Trig & Alm] screen
determines the effect of triggering, as follows:

• Start recording upon trigger: [Start]

• Stop recording upon trigger: [Stop]

• Alternately start and stop upon trigger: [Start&Stop]

Recording

T

Start Stop Start/Stop

T T T

4.1 Setting Criteria to Start and Stop Recording

4.1 Setting Criteria to Start and Stop Record­ing

There are two ways to set the criteria to start and stop recording according to
waveform slope.
Select whether to trigger at the rising or falling edge of the input signal.

Type of Analog Trigger Trigger Example Description

Level Trigger
(p. 69)

[Level]

Window Trigger
(p. 70)

[In]

[Out]

Recording starts (or stops) when
the input signal crosses the
specified trigger level (voltage).

Recording starts (or stops) when
the input signal enters a range
defined by upper and lower
thresholds.

Recording starts (or stops)
when the input signal exits a
range defined by upper and low
er thresholds.

-

4.1 Setting Criteria to Start and Stop Recording

Select the [CH] Screen.

Move to a setting item.

Apply

Open the setting options
for the item to be set.

Select from the listed
options.

1

2

T

T

1 Select [Level] as the [Cond] setting option

for the start or stop trigger.

2 Select the input signal rising () or falling ()

edge setting option.

Setting options: ( default setting)

3 Set the [Level] setting to the input signal level

at which to start or stop recording.

 Recording starts (or stops) when the signal cross-

es the threshold on the upslope (rising edge).

 Recording starts (or stops) when the signal cross-

es the threshold on the downslope (falling edge
).

1
2

3

When scaling is enabled,
the scaled value is also dis­played.

Default setting: 0

Setting the Input Signal Trigger Threshold (Level Trigger)

Enter the signal level threshold at which to start or
stop recording, and whether triggering occurs on the
upslope or downslope of the input signal.
Recording starts or stops when the signal crosses the
specified threshold. The level value is an instanta
neous (not rms) value.
Levels can be confirmed on the level monitor or on the
Waveform screen.

69

3

4

Chapter 4 Specifying Criteria for Measurements (Triggering, Alarm and Timer)

-

Level Setting Ranges and Resolution

Channels Input type Range Resolution Channels Input type Range Resolution
CH1 -

CH10

Voltage

Tc

100mV 25 V
1V 250 V Revolve
10V 2.5 mV
20V 5 mV
100V 25 mV
1-5V 2.5 mV



0.5C

P1 - P4

Count




1 c
1 r/s

70

T

T

T

In Out

T

1 Select [Window] as the [Cond] setting option

for the start or stop trigger.

2 Select inside [In] or outside [Out].

Setting options: ( default setting)

3 Enter the upper threshold value for the

[Upper] setting.

4 Enter the lower threshold value for the

[Lower] setting.

In Trigger when the input signal level enters the

window defined by the upper/lower thresholds.

Out Trigger when the input signal level exits the

window defined by the upper/lower thresholds.

1
2
3

4

When scaling is enabled,
the scaled value is also dis­played.

4.1 Setting Criteria to Start and Stop Recording

Setting Lower and Upper Trigger Thresholds (Window Trigger)

An input signal level “window” within which recording
will (or will not) occur can be defined by upper and
lower threshold levels. You can select whether record
ing starts or stops when the input signal level enters
(In) or exits (Out) of this window.
Upper and lower thresholds can be verified in the level
monitor or on the Waveform screen. When scaling is
enabled, the scaled threshold values are displayed.



-

Upper/Lower Threshold Ranges and Resolution

Channels Input Range Resolution

100mV 25 V 2 mV -2 mV
1V 250 V 20 mV -20 mV

CH1 - CH10

Voltage

P1 - P4

Tc
Count
Revolve

10V 2.5 mV 0.2 V -0.2 V
20V 5 mV 0.4 V -0.4 V
100V 25 mV 2 V -2 V
1-5V 2.5 mV 0.2 V -0.2 V





0.5C 40C -40C
1 c 80 0
1 r/s 80 0

Default setting
Upper Lower

4.1 Setting Criteria to Start and Stop Recording

1 Set the [Trigger] to [On].
2 Select the [Timming] setting option to deter-

mine how triggering will affect recording.

Setting options: ( default setting)

(Start and stop triggers can be set for each channel in­dependently.)

3 Select how trigger sources are logically com-

bined using the [Trig Source] - [Start] and [Stop]
setting options.

Setting options:( default setting)

4 (When an external trigger is applied)

Set the [Ext trig] - [Start] or [Stop] setting to

Start* Start recording according to Start Trigger

criteria.

Stop Stop recording according to Stop Trigger

criteria.

Start&Stop Start and stop recording according to the

Start and Stop Trigger criteria, respec­tively.

OR* Triggering occurs when any one of the spec-

ified trigger source criteria is met. (includes
external trigger signal)

AND Triggering occurs only when all of the speci-

fied trigger source criteria are met. (includes
external trigger signal)

1
2

3

4

[AND]

One waveform has crossed
above 0V as the other
crosses on the upslope

[OR]

Either waveform crosses
0V on the upslope

Start
Measurement

Trigger....... Level

Level............. 0 V

Slope

To apply a trigger when the upslope () of the waveform crosses zero volts:

Start
Measurement

T T T T

When the trigger combining logic is set
to [AND]
If trigger criteria are already met when
you press the

START/STOP key, no trig-

gering occurs. Triggering occurs only
after all trigger sources have ceased to
meet the criteria at once, and are sub­sequently met again.

Selecting Trigger Sources and Combinations

Enable the trigger function (set to On), select recording start/stop timing, and
set trigger criteria. Triggering is affected only by those channels for which trig
ger criteria have been set.
Make these settings on the [Trig & Alm] screen.
If trigger settings have been made on the [CH] screen, skip steps 1 and 2.
The settings in steps 1 and 2 are interlinked with those on the [CH] screen.

71

-

3

4

Chapter 4 Specifying Criteria for Measurements (Triggering, Alarm and Timer)

72

T

For the [Pre-Trig] setting, specify the time (or
number of days) to record before a trigger event.

To record waveforms after a trigger event, simply spec­ify a recording time that is longer than the pre-trigger
recording time.

Difference between [Waiting for pre-trigger] and [Wait­ing for trigger]

When measurement is started, the specified pre-trigger
length is recorded. This period is indicated as the [Waiting
for pre-trigger].
After the specified pre-trigger length has been recorded, the
period indicated as [Waiting for trigger] continues until a
trigger occurs.
During the [Waiting for pre-trigger] period, trigger events
are not recognized even when the trigger criteria are met.

The maximum settable
time span is displayed.

Change 1’s digit

Change 10’s digit

T

Pre-Tirg: 15 minutes

Recording
length
(10 minutes)

Recording ends
at trigger event

Recording Time shorter than 
Pre-Trigger Time

Recording Time longer than 
Pre-Trigger Time

T

Pre-Tirg: 5 minutes

Recording
length
(15 minutes)

Records both before
and after trigger event

Recording ends
when recording
length has passed

Pre-Trigger vs. Recording Time

4.1 Setting Criteria to Start and Stop Recording

Setting Criteria for Pre-Trigger Recording (Pre-Trig)

Select the [Start] or [Start&Stop] trigger timing setting
to record waveforms both before and after trigger
events.
However, pre-trigger recording is disabled when [Stop]
trigger timing is selected.
Make the setting on the [Trig & Alm] screen.

73

Alarm Criteria

Channel alarm status (CH1 to CH10 and P1 to P4)

• Yellow*: alarm criteria are satisfied

• Green: alarm criteria are not satisfied
*. When [Hold Alarm] is enabled (set to [On]),
the indicator remains yellow because the criteria
remain satisfied (until measurement is finished).
The [Buzzer] alarm sound can be set to on or
off. When [All display] is set to [On], the de­tected waveforms for CH1 to 10 and P1 to 4
set to the alarm source will also be displayed.

Alarm output status (ALM)

• Red: alarm signal output active

• Green: alarm signal output inactive

1 Select the [Channel] setting option to [ALM].
2 Set a check mark [ ] as shown to enable

alarm output.

3 Set the [Hold Alarm] as required for your

alarm output destination device.

Setting options:( default setting)

4 Enable or disable the alarm beeper by the

[Buzzer] setting.

Setting options:( default setting)

Off

Disable the alarm output signal when alarm
criteria are no longer met.

On Hold the alarm output active state until mea-

surement is finished.

Off

The Memory HiLogger will not sound an au­dible beep during alarm signal output.

On The Memory HiLogger will sound an audible

beep during alarm signal output.

12

: On
: Off

34

Configuring Alarm Output

Select the [CH] Screen.

To stop the alarm beeper
while measuring, set the
beeper to [Off] in the
ALM channel settings on
the Waveform screen.

4.2 Alarm Output

4.2 Alarm Output

You can enable beep tones and an alarm output signal (for external use) for each
input channel by setting its alarm criteria. You can also view alarm output status on
screens that display numerical values ([Wave+Value], [Value+Cmnt] and [Value]).

External alarm output requires connection to the external control terminals.
See

Chapter 9, "External Control" (p. 129) for details.
Select alarm input channels on the [CH] screen, and specify alarm criteria on
the [Trig & Alm] screen.

3

4

Chapter 4 Specifying Criteria for Measurements (Triggering, Alarm and Timer)

74

1 For the [Channel], select a channel for which you

want to set alarm criteria.

2 Select [Alarm on.] to enable alarm criteria settings.
3 Select the alarm criteria type from the [Cond]

setting options.

Setting options:( default setting)

Alarm criteria settings are not available unless a check
mark [

] is displayed next to the channel number.

4 Set the alarm criteria.

If you have selected [Level].

Setting options:

If you have selected [Window].

Setting options:

Off* Disable alarms for this channel.
Level Trigger an alarm when the input reaches a

specified level.

WindowTrigger an alarm when the input transitions

through upper and lower limits (window).

 Alarm output occurs when the input signal rises

above the specified level threshold.

 Alarm output occurs when the input signal falls be-

low the specified level threshold.

In Alarm output occurs when the input signal enters

the range defined by the thresholds.

Out Alarm output occurs when the input signal exits

the range defined by the thresholds.

1

Setting Alarm Criteria for Each Channel

ALM appears when no
channel output is checked
( ). In this case, select
[Alarm on.] to enable
alarm output settings, and
then set alarm criteria.

Select how you want to combine alarm output crite­ria from the [Alarm] setting options.

Setting options:( default setting)

OR* Alarm output occurs when the alarm criteria specified

for any alarm-enabled channel are satisfied.

AND Alarm output occurs only when the alarm criteria for

every alarm-enabled channel are satisfied.

Selecting Combined Alarm Output Criteria

Select the [Trig & Alm] Screen.

If set to [Off], change it to
[On].

4.2 Alarm Output

75

Channel-specific set­tings (start, stop and
alarm triggers) are dis­played to the right of
the list for the channel
selected (highlighted)
by the cursor.

Select [Batch Proc] to initialize settings and to copy
trigger and alarm settings from CH1 or P1 to the other
channels.
Copyable settings include level, window thresholds and
slope.

See: "Batch Copying Channel Settings" (p. 63)

Input type

: Voltage
: Temperature
: Integration
: Revolution
: Alarm

4.3 Confirming Trigger and Alarm Criteria Settings (List)

4.3 Confirming Trigger and Alarm Criteria Set­tings (List)

You can view and change trigger and alarm criteria settings for all channels.
However, detailed criteria settings such as level, threshold and slope can only
be changed on the [CH] screen

(p. 68).

3

4

Chapter 4 Specifying Criteria for Measurements (Triggering, Alarm and Timer)

76

Select the [Setting] Screen.

Move to a setting item.

Apply

Open the setting options
for the item to be set.

Select from the listed
options.

1

2

Change 1’s digit

Change 10’s digit

1 Set the [Timer] setting to [On].
2 Enable (set to [On]) the desired timer set-

ting items.

Setting options:

3 Set the year, month, day, hour, minute and

second for the start or stop time.

To enter the current time as the start or stop time,
select the clock mark (

) and press the ENTER

key.

4 For the [Interval] settings, set the amount of

time (days, hours, minutes and seconds)
between recording repetitions.

5 Press START.

[Wait Timer] will be displayed at the bottom of the

waveform screen.

Start Set the recording start time.
Stop Set the recording stop time.
Interval Set the recording repetition interval.

This setting is enabled on when [Repeat]
is set to [On].

Stop

measurement

Start
measurement

Recording

Recording time

Recording Interval

When recording times are
specified, recording operation
depends on the repetition and
recording time settings(p. 78).

4.4 Starting and Stopping Recording by Timer

4.4 Starting and Stopping Recording by Timer

Make these settings to record at a specific time. Recording can be set to
repeat at specific intervals between the set start and stop times.
Before setting, confirm that the Memory HiLogger clock is set to the correct
time. If not, reset the clock on the [System] screen (p. 124).

77

Example: To record daily from 9:00 to 17:00 for one month beginning 1/1/2012, 
Repeat Recording: On, Timer: On

Note: When all channels are measured and the recording interval is slower than 200ms.

(YY-M-D) (H:M:S)

(From) Start

On 12-1-1 9: 0: 0

(Until) Stop

On 12-1-31 17: 0: 0

(Time from one record­ing to the next)

Interval

On 1 0: 0: 0

(recording length) Cont: Off

8: 0: 0

9:00 to 17:00 is 8 hours

12-1-1
9:00

12-1-1
17:00

8 hours

1 day

12-1-2
9:00

4.4 Starting and Stopping Recording by Timer

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Chapter 4 Specifying Criteria for Measurements (Triggering, Alarm and Timer)

78

Press START/STOP

Timer start/stop time Trigger criteria match

T

Stop recordingStart recording

Recording

Recording time

Stop recordingStart recording

Recording

Recording

time

Dead time

Stop recordingStart recording

Recording

Recording time

Stop recording

Start recording

Recording

Dead time

Recording

time

Stop recordingStart recording

Recording

Recording time

Stop recordingStart recording

Recording

Dead time

Recording

time

Stop recordingStart recording

Recording

Recording time

Stop recordingStart recording

Recording

Dead time

Recording

time

Stop recordingStart recording

Recording

Recording time

Stop recordingStart recording

Recording

Dead time

Recording

time

Stop recordingStart recording

Recording

Recording time

4.5 About Recording Operation

4.5 About Recording Operation

Recording operation depends on the combination of trigger, timer and repeat
recording (On/Off) settings.

Trig-

Cont.

Off Off Off

Off Off Off

Recording is
stopped before
one recording
length has
elapsed

Off Off Start

ger

Timer

Repeat: Off Repeat: On

Off Off Stop

The stop time
setting is after the
recording length
has elapsed

Off Off Stop

The stop time
setting is within
the recording
length

Off Off

The stop time
setting is within
the recording
length

Start/

Stop

(Repeat Recording: same as Off)

Trig-

Press START/STOP

Timer start/stop time Trigger criteria match

T

Stop recording

Recording

T

Recording time

Start recording

Recording

time

Stop recordingStart recording

Recording

T T

Stop recordingStart recording

Recording

T

Recording time

Recording

time

Stop recordingStart

recording

Recording

Dead time

T T

Stop recordingStart recording

Recording

T T

Recording time

Stop recordingStart recording

Recording

Dead time

T T T T

Recording

time

Recording

time

Stop recordingStart recording

Recording

Stop recordingStart recording

Recording

T

Stop recordingStart recording

Recording

Dead time

T T

Cont.

Off Start Off

Off Stop Off

A stop trigger oc­curs before one
recording length
has elapsed

Off

A start trigger oc­curs after the tim­er start time, and
a stop trigger oc
curs before the
timer stop time

ger

Start/

Stop

Timer

Start/

Stop

79

4.5 About Recording Operation

Repeat: Off Repeat: On

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4

Chapter 4 Specifying Criteria for Measurements (Triggering, Alarm and Timer)

-

On Off Off (Repeat Recording: same as Off)

On Stop Off

80

4.5 About Recording Operation

Waveform 

Eject

Allows you to change
the CF card or USB
flash drive while sav­ing data in real time.
(p. 48)

Analog and pulse
waveforms

Displays acquired
data as waveforms.

Time 
Values

Scroll Bar

Shows the range and position
of the displayed waveform.

Viewing the Scroll bar (p. 82)
Information such as measure­ment start time and trigger
times is displayed below the
scroll bar.

Measurement
Configuration

You can change 
these settings (p. 41)
You can switch 
between channel 
settings and event 
search settings.

“Event Search” (p. 88)

Jump Function (p. 83)

Trigger Mark

Indicates a trigger event

You can select from seven screen configurations (p. 18)

 Gauges can be displayed for each channel (p. 84)
 Numerical values at waveform cursor positions can be

viewed (p. 84)

 Numerical calculation results can be displayed (p. 113)
 Measurement data can be displayed as waveforms and

numerical values, as numerical values with comments,
or as numerical values only (p. 87).

Move to a setting item

Apply

Open the setting options
for the item to be set.

Select from the listed
options.

1

2

Select the Waveform
Screen.

Analysis Chapter 5

About the Waveform and Numerical Value Screens

81

3

5

Chapter 5 Waveform Analysis

Settings can be changed on the Waveform/Numerical screen.

82

Screen Display

Earlier

Later

If internal memory becomes full when measuring with [Cont] set to [On], recording
continues by overwriting the oldest acquired data. Therefore, even when scrolling
earlier parts of waveforms, the overwritten data is lost.

Internal Memory (max. recording length): scrollable viewing time span

Erased Data

Screen Display Range

Whole Waveform

5.1 Viewing Waveforms

5.1 Viewing Waveforms

Scrolling Waveforms

When measuring or displaying an existing waveform,
use the SCROLL/CURSOR keys to scroll.
You can scroll to any part of a waveform while mea­suring. To return to the current waveform position,
move the selection cursor to [Trace] at the lower right
of the screen, and press the ENTER key.
To jump to the start or end of a waveform, hold the

ESC key while scrolling.



Verifying Waveform Display Position

From the scroll bar you can verify the relative position
and size of the displayed portion of a waveform within
the overall recorded waveform.
The width of the currently displayed time span indica­tor within the scroll bar depends on the time base
(time per horizontal division) setting, even when the
recording length is unchanged.



5.1 Viewing Waveforms

Select from the [Time/DIV] setting options.

Setting options:

100ms, 200ms, 500ms, 1s, 2s, 5s, 10s, 20s, 30s, 1min, 2min,
5min, 10min, 20min, 30min, 1h, 2h, 5h, 10h, 12h, 1day

[/div] ( default setting)

Indicates the center point for horizontal magnification.
When the A/B cursors are displayed, the position of cur­sor A becomes the reference point.

Select [Jump].

Apply

1

2

The location of the currently
displayed portion of the over­all waveform is indicated by
the mark on the scroll bar.

3

Move the mark to dis­play a different portion of
the waveform.

The portion of the waveform at
the mark is displayed.

Apply

Select the Waveform Screen.

4

Magnifying and Compressing Horizontally

Waveforms can be magnified (expanded or com­pressed) along the time axis by changing the time per
horizontal division.
Detailed waveform data is usually best observed with
the time axis expanded, while longer-term trends are
best observed with it compressed.
Horizontal magnification can be changed while mea­suring. However, when measuring with auto saving
enabled, the 100, 200 and 500 ms settings are not
selectable.

Viewing Any Waveform Location (Jump Function)

83

3

5

Chapter 5 Waveform Analysis

When the recording length of a waveform is long, you
can specify the portion to be displayed immediately.

84

1

2

Select the Waveform
Screen.

Gauge

Select [Gauge+Wave].

Apply

A

B

A

B

B-A

B-A

AB

B-A

A

B

B-A

5.2 Selecting Display Options

5.2 Selecting Display Options

Displaying Gauges

A gauge corresponding to the measurement range of
each channel can be displayed at the left side of the
screen, for confirming measurement values. The color of
the gauge matches the waveform display color of its input
channel.
Press the CH or key to display the gauges for other
channels. However, note that when measurement data is
displayed, only those channels that are enabled (set to
On

) for measurement can be selected.

Displaying Cursor Values

Time difference and potential difference (and when scaling
is enabled, scaling values) can be read as numerical val­ues using the A/B cursors.

About Cursor Values

Cursor Type Example Cursor Value

Displays the time and measurement values at the A/B cur-

Trace
Cursors

Vertical
Cursors

Horizontal
Cursors

sors, or the time and measurement differences between
the A/B cursors.
Displays the intersections (trace points) of cursors and
waveforms. (the intersections of waveform traces of se
lected channels)

Displays the time and frequency values at the A/B cursors,
or the time and frequency differences between the A/B cur
sors.

Displays the measurement values at the A and B cursors
for the selected channel(s), or the difference between A/B
cursor values.
A/B cursors can be enabled for any channel.

-

-

85

1

Displays the A/B cursors and the
values at the cursor positions.
To hide the cursor items again,
press the

SCROLL/CURSOR key.

2

Move the cursors to display numer­ical values along the waveform.

Moving the Cursors

Select from the [Move] setting options.

A Cur
B Cur
AB Cur

( default setting)

Changing Cursor Type

Select from the [Type] setting options.

Trace
Vert (Vertical)
Horz (Horizontal)

( default setting)

Cursors

Selecting which channels
have their cursor values dis­played

Select from the

[AB Crsr]

setting options.

• [All Ch]*

Displays all channels. The
cursor selected for [Move] is
displayed (select [AB Cur] to
display B – A difference val­ues).

• [Ch Set]

Specify which channels to
display with A and B cursors.
The cursor values for the
specified channels are dis­played.

( default setting)

Cursor Values for All Channels

Cursor Value for Specified Channels

To move cursors more quickly, hold the ESC key.

5.2 Selecting Display Options

Cursor values can be displayed for all channels, or for only desired channels.

3

5

Chapter 5 Waveform Analysis

86

1

The A/B cursors and cursor values
are displayed.

3

Move the A/B cursors to specify the time span.

Select [Move].

2

Apply

Open the setting options
for the item to be set.

Select which cursor(s)
to move.

[Move]
A Cur
B Cur
AB Cur

5.2 Selecting Display Options

Specifying a Waveform Time Span

Specify a waveform time span when saving a partial waveform or applying numerical
calculations (Trace cursors or Vertical cursors).

87

Select [Wave+Value].

1

2

Apply

Select the Waveform
Screen.

Select [Value+Cmnt].

1

2

Apply

Select the Waveform
Screen.

Select [Value].

1

2

Apply

Select the Waveform
Screen.

(Channels whose combination of mea­surement value and unit based on the
scaling setting is longer than 13 charac­ters are indicated by smaller display
characters.)

5.2 Selecting Display Options

Viewing Input Signals as Numerical Values

Numerical values can be displayed in three ways: numerical values only,
waveforms and numerical values, and numerical values and comments.
Displayed numerical values are those of the current input signals.

To display waveforms and numerical values

To display numerical values and comments

3

5

Chapter 5 Waveform Analysis

To display numerical values only

88

1 23

Select [Event].

1

Event mark settings are displayed.

3

Apply

Select the Waveform
Screen.

Move to [Make Mark].

Press to insert an event mark.
Event numbers appear on the
waveform displayed when you
select [Make Mark].

2

Select [Channel].

2

3

5.3 Inserting Event Marks (Search Function)

5.3 Inserting Event Marks (Search Function)

You can insert up to 100 event marks at any point
while measuring, to help find them later.
See "Searching Event Marks" (p. 90)
Event marks can be inserted while viewing waveforms
or by applying external signals.

Inserting Event Marks While Viewing Waveforms

Use this procedure to insert event marks while viewing data on the Waveform/
Numerical Value screen during measurement. Event marks are numbered in
the sequence they are inserted.

5.3 Inserting Event Marks (Search Function)

Select the [System] screen.

Select [External Trig In].

Apply

Open the setting options
for the item to be set.

Select [Event].

1

2

3

Connect the external signal input (p. 129).
Event marks are inserted when the external trigger signal (EXT.TRIG input

terminal 2) transitions on the falling edge from High level (3.0 to 5.0 V) to Low
level (0 to 0.8 V).

Inserting Event Marks Using External Input Signals

Event marks can be inserted by applying external input signals.

See: Input signal specifications in section 9.2, "External Trigger Input" (p. 131)

89

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5

Chapter 5 Waveform Analysis

90

1

2

3

Apply

Select the Waveform Screen.

For the [MoveNo.] setting,
select the number of the
event you want to find.

Select [Move].

4

The waveform with the specified
event number is displayed.

You can search by incrementing and
decrementing the event number.

[PrevEvent]: Search for the previous

event mark.

[NextEvent]: Search for the next

event mark.

When [Channel] is 
displayed, switch to

[Event].

The event setting items
are displayed.

2

3

4

5.3 Inserting Event Marks (Search Function)

Searching Event Marks

Any event mark can be found by searching.

91

6.1 About Saving and Loading Data

Saving & 
Loading Data Chapter 6

Measurement data acquired by the Memory HiLogger can be saved to a CF
card or USB flash drive.
The CF card is treated as Drive A:, while the USB flash drive is treated as
Drive B:. There are three save methods: [Auto Save], which saves data auto
matically at the time of measurement; [Select & Save], which allows data to be
saved after measurement; and [Quick Save].
Refer to 6.3, "Saving Data" (p. 96) for details.

6.1 About Saving and Loading Data

When saving data, a folder named HIOKI_LR8431 is created, and files are
stored in the folder as follows.

File Type

Settings Data

Waveform
Data*1

Numerical 
Calculation
Results

Captured
Screen Image

*1. Save waveform data in binary format if you intend to view it later in the HiLogger or on a

computer with the supplied Logger Utility program. Waveform data and some measure
ment-related settings data are saved. 
To save a waveform partially, specify a period by using A/B cursors before saving (p.86).

*2. BMP Format: This is a standard Windows® graphics format. These files can be handled

by many graphics programs.
*3. Appendix 2, "File Naming" (p. A7)
*4. Date (YY-MM-DD) folders are automatically created inside the DATA folder.
*5. When opening a CSV file in a spreadsheet program, note that the number of rows that

can be loaded at one time is limited (p. A7).

When an option other than [Separator: Comma] has been selected on the [System]

screen, the file extension will be .TXT rather than .CSV.

File
Format

Binary

Binary

Text *5 WAVE0001.CSV

Text *5

BMP *2

(p.93)

Folder Name

CONFIG

DATA\(Date)*4
(e.g. 12-07-30)

MEASUREMENT

PICTURE

O = Available, X = Not available

File Name *3
(Auto-numbered
from 1)

CONF0001.SET ×

WAVE0001.MEM

MEAS0001.CSV

SCR00001.BMP ×

Auto

Save Load

Model

Man-

LR8431

ual

-20

O O

O O O O

O O

O O

O O O

PC

×

×

×

O

O

-

-

3

6

Chapter 6 Saving & Loading Data

92

HIOKI_LR8431

CONF0001.SET

WAVE0001.MEM

(Settings data folder)

CONFIG

(Waveform data folder)

DATA

MEASUREMENT

WAVE0001.CSV

PICTURE

(Numerical calculation
results folder)

(Screen image folder)

12-07-01

(the folder name is the
date of file creation)

MEAS0001.CSV

SCR00001.BMP

6.1 About Saving and Loading Data

Depending on file size and CF card or USB flash drive capacity, each folder can store over
1,000 files. However, the file screen display is limited to a maximum of 1,000 files. Also, as
more files are created, more time is needed to start and stop recording. We recommend
setting measurement criteria so that the number of saved files stays below 1,000 whenever
possible.

Directory Structure for Saved Data