Hioki PQ3198-94 User manual

Contents
i
Contents
Introduction .................................................. 1
Confirming Package Contents .................... 4
Safety Notes.................................................. 6
Usage Notes.................................................. 7
Chapter 1 Overview 15
1.1 Procedure for Investigating Power
Supply Quality 15
1.2 Product Overview ............................ 19
1.3 Features ............................................ 20
1.4 Measurement Flowchart .................. 21
Start and Stop Recording 22
Chapter 2 Names and
Functions of Parts 
Basic Operations 
& Screens 23
2.1 Names and Functions of Parts ....... 23
2.2 Basic Operations ............................. 27
2.3 Display Items and Screen Types ....28
Common Display Items........................ 28
Warning Indicators............................... 30
Screen Types....................................... 31
Chapter 3 Measurement 
Preparations 37
3.1 Preparation Flowchart ..................... 37
3.2 Initial Instrument Preparations .......38
Affix color clips to the current sensors... 38
Bundle the voltage cord leads with 
the spiral tubes .................................... 39
Attaching the strap............................... 40
Attaching the Z5020 Magnetic Strap ... 40
Installing the battery pack .................... 41
3.3 Pre-Operation Inspection ................ 42
3.4 Connecting the AC Adapter ............ 43
3.5 Inserting (Removing) an 
SD Memory Card ..............................43
3.6 Connecting the Voltage Cords ........45
3.7 Connecting the Current Sensors ....46
3.8 Turning the Power On and Off 
(Setting the Default Language) .......48
Chapter 4 Configuring the 
Instrument before
Measurement 
(SYSTEM - SYSTEM
screen) and Wiring 51
4.1 Warm-up and Zero-adjust 
Operation ..........................................51
4.2 Setting the Clock ..............................52
4.3 Configuring the Connection Mode 
and Current Sensors ........................53
Connection diagram............................ 55
4.4 Setting the Vector Area 
(Tolerance Level) ..............................59
4.5 Connecting to the Lines to be 
Measured (Preparing for Current 
Measurement) ...................................60
4.6 Verifying Correct Wiring 
(Connection Check) .........................64
4.7 Quick setup .......................................66
4.8 Verifying Settings and 
Starting Recording ...........................69
4.9 Using the Instrument during 
a Power Outage ................................70
Chapter 5 Changing Settings
(as necessary) 71
5.1 Changing Measurement Conditions. 71
5.2 Changing the Recording Settings ..75
5.3 Changing the Measurement Period 78
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2
3
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PQ3198A961-00

Contents
ii
5.4 Changing Hardware Settings ..........81
5.5 Changing LAN Settings ...................84
5.6 Changing Event Settings .................85
5.7 Initializing the Instrument 
(System Reset) .................................92
5.8 Factory Settings ...............................93
Chapter 6 Monitoring 
Instantaneous Values 
(VIEW Screen) 95
6.1 Using the VIEW screen ....................95
6.2 Displaying Instantaneous 
Waveforms ........................................96
6.3 Displaying Phase Relationships 
([VECTOR] Screen) .........................100
6.4 Displaying Harmonics ....................103
Displaying harmonics as a bar graph 103
Displaying harmonics as a list........... 106
6.5 Displaying Measured Values 
Numerically (DMM Screen) ............109
Chapter 7 Monitoring 
Fluctuations in 
Measured Values 
(TIME PLOT 
Screen) 111
7.1 Using the [TIME PLOT] Screen .....113
7.2 Displaying Trends ..........................114
7.3 Displaying detailed trends .............121
Displaying a detailed trend graph for 
each TIME PLOT interval.................. 121
7.4 Displaying Harmonic Trends .........127
7.5 Displaying Flicker Values in 
Graph and List Form ......................131
IEC flicker meters and V10 flicker 
meters............................................... 131
Displaying an IEC flicker fluctuation 
graph................................................. 131
Displaying an IEC flicker list.............. 134
Displaying a V10 flicker fluctuation 
graph................................................. 135
Displaying a V10 flicker list ............. 138
Chapter 8 Checking Events
(EVENT screen) 139
8.1 Using the EVENT screen ............... 140
8.2 Displaying the Event List .............. 141
8.3 Analyzing the Measurement Line 
Status When Events Occur ........... 145
8.4 Analyzing Transient Waveforms .. 147
8.5 Viewing High-order Harmonic 
Waveforms ..................................... 150
8.6 Checking Fluctuation Data ........... 153
Chapter 9 Data Saving and File
Operations 
(SYSTEM-MEMORY
screen) 157
9.1 [MEMORY] Screen ......................... 157
9.2 Formatting SD Memory Cards ...... 160
9.3 Save Operation and File Structure 161
9.4 Saving, Display and 
Deleting Measurement Data .......... 163
9.5 Saving, Displaying, and 
Deleting Screen Copies ................. 166
9.6 Saving and Deleting Settings Files
(Settings Data) .............................. 167
9.7 Loading Settings Files 
(Settings Data) ............................... 168
9.8 File and Folder Names .................. 168
Changing file and folder names ........ 168
Chapter 10 Analyzing Data 
Using the Application 
(PQ ONE) 169
10.1 Application functionality ............... 169
10.2 Installation ...................................... 170
Installation procedure........................ 171

Contents
iii
Chapter 11 Connecting 
External Devices 173
11.1 Using the External Control 
Terminal .......................................... 173
Connecting to the External Control T
erminal............................................... 174
Using the event input terminal 
(EVENT IN)........................................ 175
Using the event input terminal 
(EVENT OUT) ....................................176
Chapter 12 Operation with a 
Computer 177
12.1 Downloading Measurement Data 
Using the USB Interface ................ 178
12.2 Control and Measurement via 
Ethernet ("LAN") Interface ............ 179
LAN Settings and Network Environment
Configuration ..................................... 180
Instrument Connection....................... 182
12.3 Remote Control of the Instrument by
Internet Browser ........................... 184
Connecting to the Instrument .............184
Operating Procedure ......................... 185
12.4 Downloading Recorded Data to 
Computer ........................................ 187
Chapter 13 Specifications 191
13.1 General Specifications .................. 191
13.2 Input Specifications/
Output Specifications/
Measurement Specifications ........ 192
13.3 Screen Specifications .................... 214
13.4 Event Specifications ...................... 226
13.5 GPS Time Synchronization 
Function .......................................... 227
13.6 Interface Specification ................... 228
13.7 Other Functions ............................. 230
13.8 Calculation Formula ...................... 231
13.9 Range Breakdown and 
Combination Accuracy .................. 244
Chapter 14 Maintenance
and Service 249
14.1 Cleaning ..........................................249
14.2 Trouble Shooting ............................250
14.3 Error Indication ...............................253
14.4 Disposing of the Instrument ..........256
Appendix A1
Appendix 1 Fundamental Measurement
Items ...................................... A1
Appendix 2 Explanation of Power Supply
Quality Parameters and 
Events.................................... A2
Appendix 3 Event Detection Methods .... A5
Appendix 4 Recording TIME PLOT Data 
and Event Waveforms........ A12
Appendix 5 Detailed Explanation of IEC
Flicker and V10 Flicker .... A16
Appendix 6 Making Effective Use of 
Channel 4 ............................ A19
Appendix 7 3-phase 3-wire 
Measurement ...................... A22
Appendix 8 Method for Calculating 
Active Power Accuracy...... A24
Appendix 9 Terminology........................ A25
Index Index1
14
3
4
5
7
8
9
10
Appendix
11
12
13
6
Index

Contents
iv

Introduction
1
Thank you for purchasing the Hioki PQ3198 Power Quality Analyzer. To obtain maximum perfor-
mance from the instrument over the long term, be sure to read this manual carefully and keep it
handy for future reference.
Be sure to also read the separate document “Operating Precautions” before use.
AC current sensors (optional; see p.5) are required in order to input current to the instrument.
(AC current sensors are called "current sensors" throughout this manual.) For more information,
see the instruction manual for the current sensors being used.
Following manuals are provided along with these models. Refer to the relevant manual based onthe
usage.
This manual has been written for use by individuals who use the product in question or who teach others
to do so. It is assumed that the reader possesses basic electrical knowledge (equivalent to that of some-
one who graduated from the electrical program at a technical high school).
• Microsoft, Windows, and Internet Explorer are either registered trademarks or trademarks of Microsoft
Corporation in the United States and other countries.
• Safari is trademark of Apple Inc.
• Sun, Sun Microsystems, Java, and any logos containing Sun or Java are trademarks or registered
trademarks of Oracle Corporation in the United States and other countries.
• SD, SDHC Logos are trademarks of SD-3C LLC.
Introduction
Type Contents Print CD
File name
Operating Precautions Information on the instrument for safe
operations ―
Instruction Manual 
(This document)
Information about instrument
functionality, detailed measurement
methods, specifications, etc.
―
Measurement Guide This instrument's basic measurement
methods ―
Application software PQ ONE
Instruction Manual How to use the PQ ONE application ―
PQONE_Manual_Eng.pdf
(English instruction manual)
PQONE_Manual_Jpn.pdf
(Japanese Instruction Manual)
Target audience
Trademarks

Introduction
2
Safety notations
In this document, the risk seriousness and the hazard levels are classified as follows.
Symbols on the instrument
Symbols for various standards
Notation
Indicates an imminently hazardous situation that will result in death or serious injury to the oper-
ator.
IIndicates a potentially hazardous situation that may result in death or serious injury to the opera-
tor.
Indicates a potentially hazardous situation that may result in minor or moderate injury to the oper-
ator or damage to the instrument or malfunction.
Advisory items related to performance or correct operation of the instrument.
IMPORTANT Indicates information related to the operation of the instrument or maintenance tasks with which
the operators must be fully familiar.
Indicates a high voltage hazard.
If a particular safety check is not performed or the instrument is mishandled, this may give rise to
a hazardous situation; the operator may receive an electric shock, may get burnt or may even be
fatally injured.
Indicates a strong magnetic-field hazard.
The effects of the magnetic force can cause abnormal operation of heart pacemakers and/or
medical electronics.
Indicates the prohibited action.
Indicates cautions and hazards. Refer to the "Usage Notes" section of the instruction manual and the
included “Operating Precautions” for more information.
Indicates a grounding terminal.
Indicates the ON side of the power switch.
Indicates the OFF side of the power switch.
Indicates AC (Alternating Current).
Indicates the Waste Electrical and Electronic Equipment Directive (WEEE Directive) in EU member
states.
This is a recycle mark established under the Resource Recycling Promotion Law (only for Japan).
Indicates that the product conforms to regulations set out by the EU Directive.
Ni-MH

Introduction
3
Accuracy
We define measurement tolerances in terms of f.s. (full scale), rdg. (reading) and dgt. (digit) values, with
the following meanings:
Others
(p. ) Indicates the location of reference information.
Indicates quick references for operation and remedies for troubleshooting.
*Additional information is presented below.
[ ] Screen labels such as menu items, setting items, dialog titles and buttons are indicated by
square brackets [ ].
CURSOR
(Bold character) Bold characters within the text indicate operating key labels.
Windows Unless otherwise specified, "Windows" represents Windows XP, Windows Vista, or Windows 7,
Windows 8, Windows 10.
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.
rdg. 
(reading or displayed
value):
The value currently being measured and indicated on the measuring in-
strument.
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-signif-
icant digit.

Confirming Package Contents
4
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 evi-
dent, or if it fails to operate according to the specifications, contact your authorized Hioki distrib-
utor or reseller.
Confirming Package Contents
PQ3198 Power Quality Analyzer .................................1
Accessories
L1000 Voltage Cord ......................................................1 set
3 m banana plug leads : 8 (red, yellow, blue, gray : 1 each, black: 4)
Alligator clips : 8 (red, yellow, blue, gray : 1 each, black: 4) 
Spiral Tubes (Cord bundling): 20
Z1002 AC Adapter (includes power cord) ........................1
Z1003 Battery Pack ......................................................1
(Ni-MH, 7.2 V/4500 mAh)
USB Cable ....................................................................1
Z4001 SD Memory Card 2 GB......................................1
Instruction Manual (This document)..............................1
Measurement Guide .....................................................1
Operating Precautions (0990A903) ..............................1
PQ ONE (computer application software, CD)..............1
See: "10.1 Application functionality" (p.169)
The latest version can be downloaded from our website.
Colored clips (red, yellow, blue, white) .........................2 each
color coding for current sensors (Affix to current sensor as necessary)
Strap .............................................................................1
(p.7)

Confirming Package Contents
5
Contact your authorized Hioki distributor or reseller for details.
Options
Voltage measurement
9243 Grabber Clip
9804-01 Magnetic Adapter
9804-02 Magnetic Adapter
L1000 Voltage Cord
L1021-01 Patch Cord (red)
L1021-02 Patch Cord (black)
Current sensors (current measurement)
CT7126 AC Current Sensor 
(60 A, 15 mm, can be extended to 10 m)
CT7131 AC Current Sensor 
(100 A, 15 mm, can be extended to 10 m)
CT7136 AC Current Sensor 
(600 A, 46 mm, can be extended to 10 m)
CT7044 AC Flexible Current Sensor
(6000 A, 100 mm, can be extended to 10 m)
CT7045 AC Flexible Current Sensor 
(6000 A, 180 mm, can be extended to 10 m)
CT7046 AC Flexible Current Sensor 
(6000 A, 254 mm, can be extended to 10 m)
CT7731 AC/DC Auto-Zero Current Sensor
(100 A, 33 mm, can be extended to 2 m)
CT7736 AC/DC Auto-Zero Current Sensor
(600 A, 33 mm, can be extended to 2 m)
CT7742 AC/DC Auto-Zero Current Sensor
(2000 A, 55 mm, can be extended to 2 m)
CT7116 AC Leakage Current Sensor 
(6 A, 40 mm, can be extended to 10 m)
L9910 Conversion Cable (BNC-PL14)
L0220-01 Extension Cable
L0220-02 Extension Cable
L0220-03 Extension Cable
Power supply
Z1002 AC Adapter
Z1003 Battery Pack
Carrying cases
C1001 Carrying Case (Soft type)
C1002 Carrying Case (Hard type)
C1009 Carrying Case (Bag type)
Wiring adapter
PW9000 Wiring Adapter
(For use with 3-phase 
3-wire (3P3W3M) voltages)
PW9001 Wiring Adapter
(For use with 3-phase 4-wire 
voltages)
Recording media
Z4001 SD Memory Card (2 GB)
Z4003 SD Memory Card (8 GB)
Other
PW9005 GPS Box
(Build-to-order)
9642 LAN Cable
Z5004 Magnetic Strap
Z5020 Magnetic Strap

Safety Notes
6
This instrument is designed to conform to IEC 61010 Safety Standards and has been thoroughly
tested for safety prior to shipment. However, using the instrument in a way not described in this
manual may negate the provided safety features.
Before using the instrument, be certain to carefully read the following safety notes:
To ensure safe operation of measuring instruments, IEC 61010 establishes safety standards for various
electrical environments, categorized as CAT II to CAT IV, and called measurement categories.
This instrument conforms to the safety requirements for CAT IV 600 V measuring instruments.
Safety Notes
Mishandling the instrument could result in bodily injury or even death, as well as
damage to the instrument. Familiarize yourself with the instructions and precau-
tions in this manual before using the instrument.
Protective gear
This instrument is measured on a live line. To prevent an electric shock, use
appropriate protective insulation and adhere to applicable laws and regulations.
Measurement categories
• Using a measuring 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.
• Never use a measuring instrument that lacks category labeling in a CAT II to
CAT IV measurement environment. Doing so could result in a serious accident.
CAT II: When directly measuring the electrical outlet receptacles of the primary electrical circuits in
equipment connected to an AC electrical outlet with a power cord (portable tools, house-
hold appliances, etc.).
CAT III: When measuring the primary electrical circuits of heavy equipment (fixed installations) con-
nected directly to the distribution panel, and feeders from the distribution panel to outlets.
CAT IV: When measuring the circuit from the service drop to the service entrance, and to the power
meter and primary overcurrent protection device (distribution panel).

Usage Notes
7
Follow these precautions to ensure safe operation and to obtain the full benefits of the various
functions.
Ensure that your use of the instrument falls within the specifications not only of the instrument
itself, but also of any accessories, options and other equipment being used.
Installing
• The instrument should be operated only with the bottom or rear side downwards.
• Vents (on the left and right side of the instrument) must not be obstructed.
Usage Notes
Before Use
If the voltage cord or the instrument is damaged, there is a risk of an electric
shock. Perform the following inspection before using the instrument:
• Check that the insulation of the voltage cord are neither ripped nor torn and
that no metal parts are exposed. Using the instrument under such conditions
could result in an electric shock. Replace the voltage cord with those specified
by our company.
• Before using the instrument, check it and verify that it operates properly to
make sure that it suffered no damage during storage or transportation. If you
find any damage or failure, contact your authorized Hioki distributor or reseller.
Instrument Installation
Installing the instrument in inappropriate locations may cause a malfunction of
instrument or may give rise to an accident. Avoid the following locations:
• Exposed to direct sunlight or high temperature
• Exposed to corrosive or combustible gases
• Exposed to a strong electromagnetic field or electrostatic charge
• Near induction heating systems (such as high-frequency induction heating
systems and IH cooking equipment)
• Susceptible to vibration
• Exposed to water, oil, chemicals, or solvents
• Exposed to high humidity or condensation
• Exposed to high quantities of dust particles
Do not place the instrument on an unstable table or inclined place. Dropping or knock-
ing down the instrument can cause injury or damage to the instrument.
50 mm or more

Usage Notes
8
Store the packaging in which the instrument was delivered, as you will need it when transporting the
instrument.
*IP30:
This indicates the degree of protection provided by the enclosure of the device against use in haz-
ardous locations, entry of solid foreign objects, and the ingress of water.
3: Protected against access to hazardous parts with tools more than 2.5 mm in diameter. The
equipment inside the enclosure is protected against entry by solid foreign objects larger than
2.5 mm in diameter.
0: Not protected against use in hazardous locations. The enclosure does not protected against
entry by solid foreign objects.
Shipping precautions
Handling the Instrument
To avoid electric shock, do not open the instrument's case. The internal compo-
nents of the instrument carry high voltages and may become very hot during
operation.
• If the instrument exhibits abnormal operation or display during use, review the infor-
mation in "14.2 Trouble Shooting" (p.250) and "14.3 Error Indication" (p.253) before
contacting your authorized Hioki distributor or reseller.
• To avoid damage to the instrument, protect it from physical shock when transporting
and handling. Be especially careful to avoid physical shock from dropping.
• The protection rating for the enclosure of this device (based on EN60529) is *IP30.
This instrument may cause interference if used in residential areas. Such use must be
avoided unless the user takes special measures to reduce electromagnetic emissions
to prevent interference to the reception of radio and television broadcasts.

Usage Notes
9
Handling the cords and current sensors
If the insulation on a cord melts, the metal conductor may be exposed. Do not
use any cord whose metal conductor is exposed. Doing so could result in an
electric shock, burn, or other hazards.
• The cable is hardened in freezing temperatures. Do not bend or pull it to avoid tear-
ing its shield or cutting cable.
• To prevent damage to the instrument and current sensor, never connect or discon-
nect a sensor while the instrument's power is on.
• To avoid damaging the power cord, grasp the plug, not the cord, when unplugging it
from the power outlet.
• To avoid breaking the cables, do not bend or pull them.
• For safety reasons, when taking measurements, only use the L1000 Voltage Cord.
• Avoid stepping on or pinching cables, which could damage the cable insulation.
• To prevent damage to the BNC connector , be sure to release the locking mecha-
nism, grip the head of the connector (not the cord), and pull it out.
• To avoid damaging the cables, unplug it by grasping the connector, not the cable.
• When disconnecting the current sensor from the instrument, be sure to grip the part
of the connector with the arrows and pull it straight out. Gripping the connector else-
where or pulling with excessive force may damage the connector.
• Use the 9217 Connection Cord (resin) when connecting to insulated BNC connector
(resin), and the 9165 Connection Cord (metal) when connecting to metallic BNC con-
nector (metal). If you connect metal BNC cable to insulated BNC connector, the insu-
lated BNC connector can be damaged and the connection equipment may be
damaged.
• Avoid dropping or jarring the clamps, which could damage the jaw, adversely affect-
ing measurement.
• Do not place any foreign object between the jaws or insert any foreign object into the
gap of the sensor head. Doing so may worsen the performance of the sensor or the
opening-closing operation of the sensor head.
• Keep the clamp closed when not in use, to avoid accumulating dust or dirt on the fac-
ing core surfaces, which could interfere with clamp performance.
Use only the Hioki specified voltage cords and input cables. Using a non-specified cable may
result in incorrect measurements due to poor connection or other reasons.
Important

Usage Notes
10
Before Connecting Measurement Cables
• To avoid electric shock, turn off the power to all devices before plugging or
unplugging any cables or peripherals.
• Be sure to connect the voltage input and current input terminals correctly. An
incorrect connection could damage or short circuit this instrument.
• In order to prevent electric shock or device damage, observe the following pre-
cautions when making connections to the external control terminals and other
interface connectors.
•Turn off the instrument and any equipment being connected before connect-
ing the measurement cables.
•Exercise care not to exceed the ratings of external control terminal and inter-
face connector signals.
•Make connections securely to avoid the risk of connections coming loose dur-
ing instrument operation and bringing wires into contact with other electri-
cally conductive parts.
•Ensure that devices and systems to be connected to the external control ter-
minals are properly isolated.
• To avoid electric shock and short-circuit accidents, use only the supplied voltage
cords to connect the instrument input terminals to the circuit to be tested.
• To avoid equipment failure, do not disconnect the communications cable while com-
munications are in progress.
• Use a common ground for both the instrument and the computer. Using different
ground circuits will result in a potential difference between the instrument's ground
and the computer's ground. If the communications cable is connected while such a
potential difference exists, it may result in equipment malfunction or failure.
• Before connecting or disconnecting any communications cable, always turn off the
instrument and the computer. Failure to do so could result in equipment malfunction
or damage.
• After connecting the communications cable, tighten the screws on the connector
securely. Failure to secure the connector could result in equipment malfunction or
damage.

Usage Notes
11
About the AC adapter
About the battery pack
Others
• To prevent an electric shock and to maintain the safety specifications of this
instrument, connect the power cord provided only to an outlet.
• Turn the instrument off before connecting the AC adapter to the instrument and
to AC power.
• Use only the supplied Hioki Model Z1002 AC Adapter. AC adapter input voltage
range is 100 V AC to 240 V AC (with ±10% stability) at 50 Hz/60 Hz. To avoid
electrical hazards and damage to the instrument, do not apply voltage outside
of this range.
• For battery operation, use only the Hioki Model Z1003 Battery Pack. We do not
take any responsibility for accidents or damage related to the use of any other
batteries.
• To avoid electric shock, turn off the power switch and disconnect the power
cord, voltage cord, and current sensor from the object under measurement
before replacing the battery pack.
• To prevent the instrument damage or electric shock, use only the screws for
securing the battery cover in place that are originally installed.
If you have lost any screws or find that any screws are damaged, please con-
tact your authorized Hioki distributor or reseller for a replacement.
To avoid problems with battery operation, remove the batteries from the instrument if it
is to be stored several week or more.
The battery pack is subject to self-discharge. Be sure to charge the battery pack before
initial use. If the battery capacity remains very low after correct recharging, the useful
battery life is at an end.
Avoid using an uninterruptible power supply (UPS) or DC/AC inverter with rectangular
wave or pseudo-sine-wave output to power the instrument. Doing so may damage the
instrument.

Usage Notes
12
Before Connecting to the Lines to be Measured
• To avoid short circuits and potentially life-threatening hazards, never attach the
current sensor to a circuit that operates at more than the maximum rated volt-
age to earth. Also, do not perform measurement around a bare conductor.
(See your current sensor's instruction manual for its maximum ratings.)
• Do not use the instrument to measure circuits that exceed its ratings or specifi-
cations. Damage to the instrument or overheating can cause bodily injury.
To avoid electrical hazards and damage to the instrument, do not apply voltage
exceeding the rated maximum to the input terminals.
• Do not short-circuit two wires to be measured by bringing the voltage cord clip
or current sensor into contact with them. Arcs or such grave accidents are
likely to occur.
• To prevent a short-circuit or electric shock, do not touch the metal part of the
connecting voltage cord tip.
• To prevent electrical shock and personnel injury, do not touch any input termi-
nals on the VT (PT), CT or the instrument when they are in operation.
Connect measurement lines to Model L1000 Voltage Cord securely. If a terminal
is loose, the contact resistance will increase, resulting in overheating, equipment
burnout, or a fire.
When the instrument's power is turned off, do not apply voltage to the instrument.
Doing so may damage the instrument.
While Measuring
If an abnormality such as smoke, strange sound or offensive smell occurs, stop
measuring immediately, disconnect from the measurement lines, turn off the
instrument, unplug the power cord from the outlet, and undo any changes to the
wiring. Contact your authorized Hioki distributor or reseller as soon as possible.
Continuing to use the instrument may result in fire or electric shock.

Usage Notes
13
Disc precautions
• Exercise care to keep the recorded side of discs free of dirt and scratches.
When writing text on a disc’s label, use a pen or marker with a soft tip.
• Keep discs inside a protective case and do not expose to direct sunlight, high
temperature, or high humidity.
• Hioki is not liable for any issues your computer system experiences in the
course of using this disc.
Using the Magnetic Adapter and Magnetic Strap
Persons wearing electronic medical devices such as a pacemaker should not
use magnetic adapter and magnetic strap. Such persons should avoid even
proximity to the magnetic adapter and magnetic strap, as it may be dangerous.
Medical device operation could be compromised, presenting a hazard to human
life.
Ingesting a magnetic adapter and magnetic strap can cause life-threatening com-
plications. Exercise particular care to keep magnetic adapter and magnetic strap
out of the reach of small children. If someone accidentally swallows it, seek
immediate medical treatment.
• Do not subject the magnetic adapter and magnetic strap to mechanical shock, for
example, due to dropping it. Shock can cause it to be chipped or cracked.
• Do not use the magnetic adapter and magnetic strap in locations where it may be
exposed to rainwater, dust, or condensation. In those conditions, the magnetic
adapter and magnetic strap may be decomposed or deteriorated. The magnet adhe-
sion may be diminished. In such case, the instrument may not be hung in place and
may fall.
• Do not bring the magnetic adapter and magnetic strap near magnetic storage device
such as floppy disks, magnetic cards, pre-paid cards, or magnetized tickets. Doing so
may corrupt and may render them unusable. Furthermore, if the magnetic adapter
and magnetic strap is brought near precision electronic equipment such as comput-
ers, TV screens, or electronic wrist watches, they may fail.

Usage Notes
14