Hioki Memory HiCorder MR6000 Instruction manual

MR6000
MR6000-01
Quick Start Manual
MEMORY HiCORDER
EN
Feb. 2019 Revised edition 1
MR6000A965-01 19-02H
Be sure to read this manual before using the instrument. p. 6
When using the instrument for the rst
time Troubleshooting
Name and Function of Each Part p. 20 Maintenance and Service p. 135
Basic Operation p. 27 Troubleshooting p. 137
Preparing for Measurement p. 37 Message p. 140
99 Washington Street
Melrose, MA 02176
Phone [phone]
Toll Free 1-800-517-8431
Visit us at www.TestEquipmentDepot.com

FAQ
To set the measurement range automatically
Refer to “3.7 Measuring Signals With the Auto-range Setting” (p. 81).
To change the measurement range
Refer to “Analog channel” (p. 73).
To add a comment to the data
Refer to “Touch keyboard” (p. 34) and “Analog channel” (p. 73).
To minimize inuence of noise (Low-pass lter, LPF)
Refer to “Analog channel” (p. 73).
To change the sampling rate
Refer to “3.2 Setting Measurement Conditions” (p. 70).
To congure the trigger settings
Refer to “3.4 Conguring the Level Trigger Settings” (p. 75).
To scroll through the waveform display
Refer to “4.2 Handling Waveforms” (p. 86).
To read measured values (cursor values) with cursors
Refer to “4.1 Reading Measured Values (Trace Cursors)” (p. 83).
To save data les
Refer to “3.6 Saving Data Consisting of Items Selected” (p. 78).
To estimate le size
Refer to “14.1 Information for Reference Purposes” of Instruction Manual.
To open data les with your computer
Refer to “4.3 Loading Data on Your Computer (Wave Viewer)” (p. 87).
MR6000A965-01

Measurement Procedure
The basic measurement procedure is as follows. For advanced use, refer to Instruction Manual
(PDF) in the accompanying CD.
Preparing for measurement (p. 37)
Inspecting the instrument before measurement (p. 69)
Conguring the basic settings for measurement (p. 70)
Choose a sampling rate.
Choose a recording length (shot).
Conguring the input channel settings (p. 72)
Congure the analog channel settings.
Conguring the trigger settings (p. 75)
Congure the trigger settings.
Starting/Stopping measurement (p. 77)
Saving waveform data les (p. 78)
Analyzing waveforms (p. 83)
Scroll through, zoom in, and zoom out waveforms.
Read measured values (with the trace cursors).
Finishing the measurement

i
Built-in drive..............................................60
Removing storage devices ........................60
Formatting storage devices .......................61
2.8 How to Open the Media Box...............62
2.9 Supplying Power to the Instrument....63
Turning on the instrument .........................63
GND terminal (functional earth terminal)....63
Turning off the instrument..........................63
2.10 Setting the Clock ..................................64
2.11 Executing Zero-Adjustment.................65
2.12 Executing Calibration
(For the Instrument With Model
MR8990 Installed) ................................67
3 Measurement Method 69
3.1 Inspection Before Measurement ........69
3.2 Setting Measurement Conditions.......70
Sampling rate setting guideline..................71
3.3 Conguring the Input Channel
settings...................................................72
Analog channel.........................................73
3.4 Conguring the Level Trigger
Settings ..................................................75
3.5 Starting/Stopping a Measurement .....77
3.6 Saving Data Consisting of Items
Selected.................................................78
Save types and setting procedure .............78
Selective save ..........................................79
3.7 Measuring Signals With the
Auto-range Setting ...............................81
4 Analysis Method 83
4.1 Reading Measured Values
(Trace Cursors).....................................83
4.2 Handling Waveforms............................86
Scrolling through waveforms .....................86
Zooming in and out waveforms..................86
4.3 Loading Data on Your
Computer (Wave Viewer) ....................87
5 Specications 89
5.1 Specications of Model MR6000........89
General specications...............................89
Trigger......................................................93
Waveform screen......................................95
Setting screen ..........................................96
File...........................................................99
Calculation .............................................100
Memory division......................................103
Waveform search....................................103
Contents
Introduction........................................................1
Notations............................................................2
Conrming Package Contents........................4
Options (sold separately) ............................5
Safety Information ............................................6
Operation Precautions .....................................8
How to Refer to This Document ...................17
1 Overview 19
1.1 Product Overview and Features.........19
1.2 Name and Function of Each Part.......20
1.3 Screen....................................................24
Screen conguration .................................24
Explanation of each screen .......................25
1.4 Basic Operation ....................................27
Touch panel..............................................27
Rotary knob..............................................28
Changing screens and settings .................30
Quick-access menu ..................................32
Key lock ...................................................33
Help function (Displaying manuals) ...........33
Mouse operation.......................................34
Touch keyboard ........................................34
2 Preparing for
Measurement 37
2.1 Installing and Removing Modules ......38
Allocation of modules and channels...........39
2.2 Attaching Connection Cords ...............40
Connection cords (For measuring
voltage, frequency, or rotation speed,
and obtaining accumulations)....................41
Thermocouple (Temperature) ....................43
Strain gauge transducer............................44
Current sensor..........................................46
Acceleration sensor ..................................49
Logic probe (Measuring logic signals)........51
Connection cable
(For precisely measuring voltage)..............51
Connection cable
(for measuring high voltage)......................52
2.3 Supplying Power to Current
Sensors..................................................53
2.4 External Sampling (EXT.SMPL) .........54
2.5 Connecting the External Control
Terminals ...............................................55
2.6 Connecting the Instrument With
Computers.............................................57
2.7 Preparing Storage Devices
(Recording Media)................................59
SD memory card.......................................59
USB ash drive.........................................59
6
5
4
3
2
1
Index

Contents
ii
Index 153
Warranty
Others ....................................................103
5.2 Specications of the Options ............105
Model Z5021 Probe Power Unit...............105
Model U8332 SSD Unit ...........................105
Model U8333 HD Unit .............................106
Model 8966 Analog Unit ..........................106
Model 8967 Temp Unit ............................108
Model 8968 High Resolution Unit ............110
Model U8969 Strain Unit .........................112
Model 8970 Freq Unit .............................114
Model 8971 Current Unit .........................116
Model 8972 DC/RMS Unit .......................118
Model 8973 Logic Unit ............................120
Model MR8990 Digital Voltmeter Unit ......120
Model U8974 High Voltage Unit...............122
Model U8975 4ch Analog Unit .................124
Model U8976 High Speed Analog Unit.....126
Model U8977 3CH Current Unit
(available for the rmware version 2.10
or later)...................................................128
Model U8978 4CH Analog Unit
(available for the rmware version 2.10
or later)...................................................130
Model U8979 Charge Unit
(available for the rmware version 2.10
or later)...................................................132
6 Maintenance and
Service 135
6.1 Troubleshooting ..................................137
Before sending the instrument for
repair......................................................137
6.2 Initializing the Instrument...................139
6.3 Message ..............................................140
Error messages ......................................141
Warning messages .................................142
6.4 Self-check............................................146
Memory check ........................................146
Touch panel check ..................................147
Key check...............................................147
LCD check..............................................147
LAN check..............................................148
Media check ...........................................149
System conguration check.....................150
6.5 Cleaning the Instrument ....................150
6.6 Disposing of the Instrument
(Removing the lithium battery)..........151

1
Introduction
Introduction
Thank you for choosing the Hioki MR6000, MR6000-01 Memory HiCorder. Preserve this manual
carefully and keep it handy to make full use of this instrument for a long time.
Model MR6000-01 Memory HiCorder is an upper model of Model MR6000, which is equipped with
the following calculation functions (options):
• Digital lter calculation
• Real-time waveform calculation
Following manuals are provided along with these models. Refer to manuals relevant to your
purpose.
Type Contents Printed CD-stored
File name
Operating Precautions Information on the instrument for safe
operation –
Quick Start Manual
(This document)
Basic instructions and specications of
the instrument 
MR6000A965-XX.pdf
Instruction Manual Functions and instructions for the
instrument –
MR6000A966-XX.pdf
MR6000-01 Dedicated
Functions
Method to use functions including the
calculation available only with Model
MR6000-01
–
MR6000A968-XX.pdf
Target audience
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 someone
who graduated from the electrical program at a technical high school).
Trademarks
• Microsoft and Internet Explorer are either registered trademarks or trademarks of Microsoft
Corporation in the United States and other countries.
• The SD logo is a trademark of SD-3C, LLC.
• Any other products and company names are generally either trade names, registered trademarks
or trademarks of respective companies.

2
Notations
Notations
Safety notations
In this document, the risk seriousness and the hazard levels are classied as follows.
DANGER Indicates an imminently hazardous situation that will result in death or serious
injury to the operator.
WARNING Indicates a potentially hazardous situation that may result in death or serious
injury to the operator.
CAUTION Indicates a potentially hazardous situation that may result in minor or moderate
injury to the operator or damage to the instrument or malfunction.
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 prohibited action.
Indicates the action which must be performed.
Symbols afxed to the instrument
Indicates cautions and hazards. When the symbol is printed on the instrument, refer
to “Operation Precautions” (p. 8) in this document and accompanying “Operating
Precautions.”
Indicates the power button that switches the instrument between on and off states.
Indicates a grounding terminal.
Indicates DC (Direct Current).
Indicates AC (Alternating Current).
Symbols for Standards
Indicates the Waste Electrical and Electronic Equipment Directive (WEEE Directive) in EU
member states.
Indicates that the product conforms to regulations set out by the EU Directive.

3
Notations
Others
*Additional information is presented below.
Indicates the initial setting values of the items. Initializing the instrument restores
settings to each of these values.
(p. ) Indicates the location of reference information.
START
(Bold-faced) Names and keys on the screen are indicated in boldface.
[ ] Menus, dialog boxes, buttons in a dialog box, and other names on the screen are
indicated in brackets.
Windows Unless otherwise specied, “Windows” represents Windows 7, Windows 8, and
Windows 10.
Current sensor Sensors measuring current are referred to as “current sensor.”
S/s
The number of times per second the analog input signals are digitized by the
instrument is represented in “samples per second (S/s).”
Example:
“20 MS/s” (20 megasamples per second) indicates that the signal is digitized
20 × 106times per second.
Accuracy
We dene measurement tolerances in terms of f.s. (full scale) and rdg. (reading) values, with the
following meanings:
f.s. (maximum display value or scale length)
The maximum displayable value or scale length.
rdg. (displayed value)
The value currently being measured and displayed on the measuring instrument.

4
Conrming Package Contents
Conrming Package Contents
When you open the package, inspect the instrument carefully to ensure that everything is in good
condition, and that no damage occurred during shipping. Carefully check the accessories, panel
keys and switches, and connectors. If the instrument seems to have been damaged or does not
work as specied, contact your authorized Hioki distributor or reseller.
Check that the package contents are correct.
Instrument
Model MR6000 Memory HiCorder /
Model MR6000-01 Memory HiCorder
Accessories
Power cord (p. 63)
Operating Precautions (0990A903)
Quick Start Manual (This document)
Instruction Manual CD*1
• Quick Start Manual
MR6000A965-XX.pdf
• Instruction Manual
MR6000A966-XX.pdf
• MR6000-01 Dedicated Functions
MR6000A968-XX.pdf
(p. 33)
Application disc*1
(p. 87)
Blank panel (for slots with no module installed) (p. 38)
*1: The latest version can be downloaded from our website.

5
Conrming Package Contents
Options (sold separately)
Options available only at the time of purchase
order issuance for the instrument
Model U8332 SSD Unit
Model U8333 HD Unit
Model Z5021 Probe Power Unit
Input modules
Model 8966 Analog Unit
Model 8967 Temp Unit
Model 8968 High Resolution Unit
Model U8969 Strain Unit
Model 8970 Freq Unit
Model 8971 Current Unit
Model 8972 DC/RMS Unit
Model 8973 Logic Unit
Model U8974 High Voltage Unit
Model U8975 4ch Analog Unit
Model U8976 High Speed Analog Unit
Model MR8990 Digital Voltmeter Unit
Model U8977 3CH Current Unit
Model U8978 4CH Analog Unit
Model U8979 Charge Unit
Carrying case
Model C1010 Carrying Case
Software
Model 9335 Wave Processor
SD memory cards
Model Z4001 SD Memory Card (2 GB)
Model Z4003 SD Memory Card (8 GB)
USB ash drive
Model Z4006 USB Drive (16 GB)
Logic probes
Model 9320-01 Logic Probe
Model MR9321-01 Logic Probe
Model 9327 Logic Probe
LAN cable
Model 9642 LAN Cable
For external sampling measurement
Model L9795-01 Connection Cable
Model L9795-02 Connection Cable
For voltage measurement
Model L9197 Connection Cord
Model L9198 Connection Cord
Model L9790 Connection Cord
Model L9217 Connection Cord
Model 9665 10:1 Probe
Model 9666 100:1 Probe
Model 9322 Differential Probe
Model P9000-01 Differential Probe
Model P9000-02 Differential Probe
For current measurement
Model CT6700 Current Probe
Model CT6701 Current Probe
Model 3273-50 Clamp on Probe
Model 3274 Clamp on Probe
Model 3275 Clamp on Probe
Model 3276 Clamp on Probe
Model 9709 AC/DC Current Sensor
Model 9709-05 AC/DC Current Sensor
Model 9272-05 Clamp on Sensor
Model 9272-10 Clamp on Sensor
Model CT6841 AC/DC Current Probe
Model CT6841-05 AC/DC Current Probe
Model CT6843 AC/DC Current Probe
Model CT6843-05 AC/DC Current Probe
Model CT6844 AC/DC Current Probe
Model CT6844-05 AC/DC Current Probe
Model CT6845 AC/DC Current Probe
Model CT6845-05 AC/DC Current Probe
Model CT6846 AC/DC Current Probe
Model CT6846-05 AC/DC Current Probe
Model CT6862 AC/DC Current Sensor
Model CT6862-05 AC/DC Current Sensor
Model CT6863 AC/DC Current Sensor
Model CT6863-05 AC/DC Current Sensor
Model CT6865 AC/DC Current Sensor
Model CT6865-05 AC/DC Current Sensor
Model CT6875 AC/DC Current Sensor
Model CT6876 AC/DC Current Sensor
Model CT7631 AC/DC Current Sensor
Model CT7636 AC/DC Current Sensor
Model CT7642 AC/DC Current Sensor
Model CT7731 AC/DC Auto-Zero Current Sensor
Model CT7736 AC/DC Auto-Zero Current Sensor
Model CT7742 AC/DC Auto-Zero Current Sensor
Model CT7044 AC Flexible Current Sensor
Model CT7045 AC Flexible Current Sensor
Model CT7046 AC Flexible Current Sensor
Model CT9900 Conversion Cable
Model CT9920 Conversion Cable

6
Safety Information
Safety Information
This instrument is designed to conform to IEC 61010 Safety Standards, and has been thoroughly
tested for safety prior to shipment. However, using the instrument in a way not described in this
manual may negate the provided safety features.
Read the following safety notes carefully before using the instrument.
DANGER
Mishandling the instrument could result in bodily injury or even death, as well
as damage to the instrument. Familiarize yourself with the instructions and
precautions in this manual before using the instrument.
WARNING
Electricity can cause potentially serious events such as an electric shock,
heat generation, re, and an arc ash due to a short-circuit. If you have not
used electrical measuring instruments before, you should be supervised by a
technician who has experience in electrical measurement.
Protective gear
WARNING
This instrument is measured on a live line. To prevent an electric shock, use
appropriate protective insulation and adhere to applicable laws and regulations.

7
Safety Information
Measurement categories
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.
DANGER
•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 by a power cord (portable
tools, household appliances, etc.).
CAT III: When measuring the primary electrical circuits of heavy equipment (xed installations)
connected 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).
T
Outlet
CAT II
Internal Wiring
Distribution Panel
Service Entrance
Service Drop
CAT IV
Power Meter
CAT III
Fixed Installation
The applicable measurement category is determined based on the module being used.
Refer to “Handling the instrument and modules” (p. 10).

8
Operation Precautions
Operation Precautions
Follow these precautions to ensure safe operation and to obtain the full benets of the various
functions.
Ensure that your use of the instrument falls within the specications not only of the instrument itself,
but also of any accessories, options and other equipment being used.
Checks before use
DANGER
If the connection cords 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 connection cords are neither ripped nor torn
and that no metal parts are exposed before using the instrument. Using the
instrument under such conditions could result in an electric shock. Replace the
connection cords with those specied by our company.
• Check if there is any damage to the instrument occurred during storage or
shipping and verify that it operates normally before using the instrument. If you
nd any damage, contact your authorized Hioki distributor or reseller.

9
Operation Precautions
Installing the instrument and modules
WARNING
Installing the instrument in inappropriate locations could cause a malfunction of
the instrument an accident, or re. Avoid the locations that are:
•Exposed to direct sunlight or high temperatures
•Exposed to corrosive or combustible gases
•Exposed to strong electromagnetic elds or electrostatic charges
•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
Unplugging the power cord kills power to the instrument. Be sure to provide
enough unobstructed space to unplug the power cord immediately in an
emergency.
• Do not place the instrument on an unstable
table.
• Do not place the instrument on an inclined
surface.
• Do not stack the multiple instruments.
• Vents must not be obstructed.
• To prevent overheating, be sure to leave
5 cm (2 inches) around the instrument.
• The instrument should be operated only with
the bottom or rear side downwards.
5 cm or wider
Vents
Vents
5 cm or wider
5 cm or wider
Power supply
CAUTION
To avoid damage to the instrument, do not unplug the power cord from the instrument
when operations are in progress. Be sure to use the power key to turn off the
instrument.

10
Operation Precautions
Handling the instrument and modules
DANGER
•Do not use the modules or the cords to measure circuits that exceed those
ratings or specications. Damage to the instrument or overheating can cause
bodily injury.
•The maximum input voltage and maximum rated voltage to earth of the modules
and connection cords are shown in the following table. To avoid an electric
shock and damage to the instrument, ensure that input voltage never exceeds
these limits. The lower maximum input voltage of the module or connection
cord must be used. Measuring a voltage exceeding this value can cause
damage to the instrument, resulting in bodily injury. The same applies to the
maximum rated voltage to earth using an input attenuator for the measurement.
Ensure that the connection does not allow the input voltage to exceed the
maximum rated voltage to earth.
Refer to “5.2 Specications of the Options” (p. 105).
Ratings of modules
Modules Maximum input voltage Maximum rated voltage to
earth
Model 8966 Analog Unit 400 V DC 300 V AC/DC (CAT II)
Model 8967 Temp Unit –300 V AC/DC (CAT II)
Model 8968 High Resolution Unit 400 V DC 300 V AC/DC (CAT II)
Model U8969 Strain Unit –30 V rms / 60 V DC
Model 8970 Freq Unit 400 V DC 300 V AC/DC (CAT II)
Model 8971 Current Unit – Non-isolated
Model 8972 DC/RMS Unit 400 V DC 300 V AC/DC (CAT II)
Model 8973 Logic Unit – Non-isolated
Model U8974 High Voltage Unit 1000 V DC
700 V AC
1000 V AC/DC (CAT III)
600 V AC/DC (CAT IV)
Model U8975 4ch Analog Unit 200 V DC 300 V AC/DC (CAT II)
Model U8976 High Speed Analog Unit
400 V DC (Direct input)
1000 V DC (with Model
9665 10:1 Probe used)
1000 V AC/DC (CAT II)
Model U8977 3CH Current Unit – Non-isolated
Model U8978 4CH Analog Unit
40 V DC (Direct input)
400 V DC (with Model 9665
10:1 Probe used)
30 V DC, 60 V AC
(Direct input)
300 V AC/DC (CAT II) (with
Model 9665 10:1 Probe
used)
Model U8979 Charge Unit 40 V DC 30 V AC
60 V DC
Model MR8990 Digital Voltmeter Unit 500 V DC 300 V AC/DC (CAT II)
ModulesModel MR6000
High
Low
Maximum input voltage Maximum rated
voltage to earth
Maximum rated
voltage to earth

11
Operation Precautions
Ratings of connection cords
Connection cord Maximum input voltage Maximum rated voltage to earth
Model L9197 Connection Cord 600 V AC/DC 600 V AC/DC (CAT III)
300 V AC/DC (CAT IV)
Model L9198 Connection Cord
300 V AC/DC 600 V AC/DC (CAT II)
300 V AC/DC (CAT III)
Model L9217 Connection Cord
Model L9790 Connection Cord 600 V AC/DC
• With Model L9790-01 Alligator Clip or
Model 9790-03 Contact Pin attached
600 V AC/DC (CAT II)
300 V AC/DC (CAT III)
• With Model 9790-02 Grabber Clip
attached
300 V AC/DC (CAT II)
150 V AC/DC (CAT III)
Model 9322 Differential Probe 2000 V DC
1000 V AC
• With grabber clips attached
1500 V AC/DC (CAT II)
600 V AC/DC (CAT III)
• With alligator clips attached
1000 V AC/DC (CAT II)
600 V AC/DC (CAT III)
Model L4940 Connection Cord 1000 V DC*
• With Model L4935 Alligator Clip or
Model L4932 Test Pin attached
600 V AC/DC (CAT IV)
1000 V AC/DC (CAT III)
• With Model 9243 Grabber Clip or
Model L4936 Bus Bar Clip attached
600 V AC/DC (CAT III)
• With Model L4937 Magnetic Adapter
Set attached
1000 V AC/DC (CAT III)
• With Model L4934 Small Alligator Clip
Set attached
300 V AC/DC (CAT III)
600 V AC/DC (CAT II)
Model P9000-01 Differential Probe
1000 V AC/DC 1000 V AC/DC (CAT III)
Model P9000-02 Differential Probe
Model L9197 Connection Cord 30 V AC
60 V DC For inputting voltage into Model U8979
*: When Model U8974 High Voltage Unit is used
DANGER
It is recommended to measure the secondary side of a distribution panel with the
U8974 High Voltage Unit. Do not connect the connection cords on the primary
side of the distribution panel because an unrestricted current ow can damage
the connection cords and facilities if a short-circuit occurs.
WARNING
Each channel of Model U8979 Charge Unit has the BNC terminal and miniature
connector terminal with the common ground. Do not connect cords with each of
the terminals simultaneously to avoid a short-circuit.

12
Operation Precautions
WARNING
•To avoid an electric shock and damage to the module and the instrument,
conrm that the instrument is turned off and that the connection cords are
disconnected before removing or replacing a module.
•To avoid an electric shock, install a blank panel over any slot with a module
removed.
•To prevent the instrument damage or an electric shock, use only the screws that
are originally installed for securing the module in place. If you have lost any
screws or nd that any screws are damaged, please contact your authorized
Hioki distributor or reseller.
•Setting the measurement mode to [Preamp] allows Model U8979 Charge Unit
to constantly provide power (3.5 mA, 22 V) to sensors. Set any measurement
mode other than [Preamp] or tum off the instrument before connecting a sensor
or probe with a BNC terminal to avoid an electric shock or damage to the
measurement target.
CAUTION
• Do not touch module connectors inserted to the instrument to avoid damaging a
module.
• Model U8979 Charge Unit has miniature connectors with the maximum input charge
of ±500 pC (for six higher-sensitivity range) or ±50,000 pC (for six lower-sensitivity
range). Inputting a charge that exceeds these value causes damage to the instrument.
• Use an acceleration sensor with a built-in pre-amplier that conforms to the
specication of Model U8979 (3.5 mA, 22 V). Using a inapplicable sensor may cause
damaging itself.
• The mounting screws must be rmly tightened or the module may not work as
specied, or may even fail.
IMPORTANT
• Install a blank panel over each of the slot with no module installed. If the measurement is
performed with no blank panel installed, the instrument may not work as specied because of
temperature instability within the modules.
• If any unexpected waveform is observed or a module is not recognized, send the instrument for
repair.
• Before carrying the instrument, disconnect all cords and remove the USB ash drive and SD
memory card.
• Waveforms can frequently uctuate even when no voltage is applied due to an induction voltage.
This, however, is not a malfunction.
• 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.

13
Operation Precautions
Precautions During Shipment
Store the packaging materials even after unpacking, because you will need them when you
transport the instrument.
CAUTION
To avoid damage to the instrument, protect it from physical shock when transporting
and handling. Be especially careful to avoid physical shock due to dropping it.
CD 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.
Handling storage devices
CAUTION
• Do not carry the instrument with a USB ash drive inserted. Damage could result.
• Do not subject the instrument to extreme shock or vibration. Shock can cause damage
to the HD unit or built-in SSD unit.
• Inserting a storage device upside down, backward, or in the wrong direction may
damage the storage device and instrument.
Exercise care when using such products because static electricity could damage the
external storage media or cause a malfunction of the instrument.
IMPORTANT
• Do not extract any external storage device or turn off the instrument while the instrument is
accessing the storage device (while the blue SAVE key is lighting up). Data stored in the device
could be lost.
• No compensation is available for loss of data stored on any external storage device (USB
ash drive, SD card) or the built-in HD and SSD units of the instrument, regardless of contents
or causes of damage or loss. Be sure to back up any important data stored on the external
storage device (USB ash drive, SD card), and the built-in HD and SSD units of the instrument.
• When the instrument is left powered off for a long period of time (about one year or more), the
data saved to the built-in SSD may be lost. Be sure to back up the data if the instrument is to
be left powered off for a long time.
• With some external storage device, the instrument may not start up if power is turned on while
the device is inserted. In such a case, turn off and cycle the instrument.
• The instrument does not support certain types of USB ash drives, such as those that require
ngerprint authentication or a password.
• Number of writes for the external media (USB ash drive, SD memory card) and the built-in SSD
unit of the instrument is limited by their ash memory. If data has been rewritten many times, data
reading and writing capabilities will be degraded. In that case, replace the device.

14
Operation Precautions
• Media that can be used to save data is as follows. Use the product available as Hioki’s option
only. (p. 5)
Model Z4006 USB Drive
Model Z4001 SD Memory Card (2 GB)
Model Z4003 SD Memory Card (8 GB)
Model U8333 HD Unit (built-in)
Model U8332 SSD Unit (built-in)
Before connecting cords
For detailed precautions and instructions on connections, refer to the instruction manuals of your
connection cords.
DANGER
•If the insulation on a connecting 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.
When measuring power line voltage
•Only connect connection cords on the secondary side of a distribution panel. If
a short-circuit occurs on the secondary side of the distribution panel, the panel
will interrupt the short-circuit current. Do not connect the connection cords on
the primary side of the distribution panel because an unrestricted current ow
can damage the connection cords and facilities if a short-circuit occurs.
•To prevent an electrical shock and bodily injury, do not touch any input
terminals on the VT (PT), CT or the instrument when they are in operation.
•Do not leave the measurement cords connected to the instrument in an
environment where voltage may surge beyond the maximum input voltage.
Applying voltage may result in damage to the instrument, or serious accidents.
•Do not cause a short-circuit between another wire and the wire to be measured
with the metal tip of the connection cord. Arcs or such grave accidents are
likely to occur.
•To avoid a short-circuit or electric shock, do not touch the metal tip of the
connection cord.
WARNING
•To prevent an electric shock, conrm that the white or red portion (insulation
layer) inside the cable is not exposed. If a color inside the cable is exposed, do
not use the cable.
•Do not place a cord in contact with the lines to be measured. Any contact
can cause the instrument to malfunction and lead to a short-circuit or electric
shock, resulting in bodily injury.
•Use only the specied connection cords. Using a non-specied cord may
result in unsafe measurements. Using a non-specied cord may also result in
incorrect measurements due to poor connection or other reasons.
•To avoid electric shock, do not exceed the lower of the ratings shown on the
modules and connection cords.
CAUTION
• To prevent cord damage, do not step on cords or pinch them between other objects.
Do not bend or pull on cords at their base.

15
Operation Precautions
CAUTION
• The cable is hardened in freezing temperatures. Do not bend or pull it to avoid tearing
its shield or cutting the cable.
• Do not use any cable terminated with a metal BNC connector for connecting cables
to the BNC jacks on modules. If you connect a metal BNC cable to insulated BNC
connector, the insulated BNC connector and instrument may be damaged.
Before connecting a logic probe to a measurement target
DANGER
To avoid an electric shock, a short-circuit and damage to the instrument, supply
power from a single main to the instrument and a measurement target with the
accompanying power cord.
The ground pin of logic terminal of Model 9320-01 Logic Probe (or Model 9327
Logic Probe) is not isolated from the instrument ground. The ground is shared.
If each of the terminals are supplied with power from separate mains or power
is supplied through a non-grounded power cord, the measurement target and
the instrument may be damaged because a current may ow through the logic
probe due to the resulting ground potential difference between the terminals. The
following connection procedure is recommended to avoid this problem:
•Connect the accompanying power
cord to the instrument and supply
power from a single outlet as the
measurement target.
•Connect the ground of the
measurement target to the GND
terminal (functional earth terminal)
of the instrument.
(Always supply power from a single
main.)
Refer to “2.9 Supplying Power to
the Instrument” (p. 63).
Functional ground terminal
GND Logic
probe
Model MR6000
Model MR6000
Measurement
target
Measurement
target
Logic
probe
Before turning on the instrument
WARNING
•To prevent electrical shock and to maintain the safety specications of this
instrument, connect the accompanying power cord only to an inlet.
•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.
CAUTION
Do not operate the instrument on any of the power sources that provide rectangular-
wave or pseudo-sine-wave power (UPS or uninterruptible power supply, DC/AC
inverter). Doing so may damage the instrument.