Hioki PW6001 User manual

Contents
i
3 Viewing Measured
Values 49
3.1 Displaying Measured Values......... 49
Selecting display parameters......................49
3.2 Viewing Power Measured Values
and Changing Measurement
Conditions ...................................... 52
Displaying power measured values ............52
Displaying voltage and current ...................53
Setting the ranges.......................................53
Conguring zero-suppression.....................56
Setting the data update rate .......................57
Setting the synchronization source.............58
Setting the low-pass lter (LPF)..................59
Conguring frequency measurement..........60
Setting the frequency source ......................60
Setting the measurement upper limit
frequency and the lower limit frequency .....61
Setting the rectier......................................62
Conguring scaling (when using a VT
[PT] or CT) ..................................................62
3.3 Viewing Integration Values............ 63
Displaying integration values ......................63
Setting the integration mode.......................66
Using manual integration ............................67
Performing integration while using the
time control function....................................68
3.4 Viewing Harmonic Measured
Values.............................................. 69
Displaying harmonics..................................69
Setting the harmonic measurement mode..72
Setting the THD calculation method ...........73
THD calculation order .................................73
Setting the grouping method.......................74
3.5 Viewing Measured Values for
Power Factor and Loss.................. 75
Displaying efciency and loss.....................75
Setting the calculation formulas for
efciency and loss ......................................76
Example measurements .............................77
3.6 Viewing Motor Measured
Values (Motor Analysis and D/
A-equipped Models)....................... 80
Displaying motor measured values.............80
Performing zero-adjustment of motor input 81
Setting motor input......................................82
Measuring a motor’s electrical angle ..........89
Detecting the motor’s direction of rotation ..91
Measurement Process .............................. 1
System Architecture.................................. 2
Example Measurement Setups................. 3
Introduction................................................ 5
Verifying Package Contents ..................... 6
Options .........................................................7
Safety Information..................................... 9
Operating Precautions.............................11
1 Overview 17
1.1 Product Overview........................... 17
1.2 Features .......................................... 17
1.3 Part Names and Functions............ 19
1.4 Basic Operation (Screen Display
and Layout)..................................... 25
Screen Operation........................................25
Common Screen Display ............................28
Measurement Screen Display.....................29
Screen Layouts...........................................30
2 Preparing for
Measurement 33
2.1 After Purchase................................ 33
Wrapping voltage cords in spiral tubes.......33
2.2 Inspecting the Instrument
before Use....................................... 34
2.3 Connecting the Power Cord.......... 35
2.4 Connecting the Voltage Cords...... 35
2.5 Connecting the Current Sensors.. 36
Connecting a current sensor to the
Probe1 terminal ..........................................37
Connecting a current sensor to the
Probe2 terminal ..........................................38
If the measurement range exceeds
(using a VT and CT) ...................................39
2.6 Turning the Instrument On/Off...... 40
2.7 Setting the Connection Mode
and Current Sensors...................... 41
2.8 Connecting the Instrument to
the Measurement Lines (Zero-
adjustment)..................................... 43
Zero-adjustment and degaussing (DMAG) .43
Connecting the voltage cords to the
measurement lines .....................................44
Connecting the current sensor to the
measurement lines .....................................44
Using the quick conguration function ........45
2.9 Verifying Proper Connections
(Connection Check) ....................... 47
Contents
PW6001A961-04
10
9
8
7
6
5
4
3
2
1
Appx. Ind.

Contents
ii
4 Viewing Waveforms 93
4.1 Displaying Waveforms................... 93
Displaying waveforms on the WAVE
screen .........................................................93
Displaying waveforms and measured
values on the WAVE+VALUE screen..........94
Initializing the display position ....................94
4.2 Changing the Waveform Display
and Conguring Recording........... 96
Vertical axis zoom factor and display
position settings ..........................................96
Time axis setting .........................................97
Detailed display settings .............................99
Vertical axis scale display ...........................99
Trigger settings .........................................100
4.3 Recording Waveforms ................. 102
Recording a waveform continuously.........102
Recording a waveform once .....................102
Activating the trigger manually..................102
4.4 Analyzing Displayed Waveforms 103
Viewing displayed waveform values
(Cursor measurement)..............................103
Enlarging waveforms (zoom function) ......104
4.5 Viewing FFT Analysis Results .... 105
Displaying waveforms and FFT analysis
results .......................................................105
Changing the window size and position....106
Displaying FFT analysis results as values 108
Turning the display of FFT analysis
results on and off ......................................108
Setting the lower limit frequency for the
FFT peak value display.............................109
Setting the window function ...................... 110
Changing the scale of the vertical axis
on the FFT analysis results display .......... 111
5 Using the Instrument’s
Functionality 113
5.1 Time Control Function..................113
Interval time control .................................. 113
Timer time control ..................................... 113
Actual time control .................................... 113
5.2 Averaging Function.......................115
Simple average (ADD).............................. 115
Exponential average (EXP)...................... 115
5.3 Hold and Peak Hold Functions ....117
Hold function............................................. 117
Peak hold function .................................... 119
5.4 Delta Conversion Function ......... 122

∆-Y conversion..........................................122
Y-∆conversion ..........................................123
5.5 Selecting the Power Calculation
Formula ......................................... 124
5.6 Current Sensor Phase Shift
Function ........................................ 125
5.7 User-dened Calculations (UDF) 127
5.8 Simple Graph Function................ 129
D/A monitor graph.....................................129
Detailed display settings ...........................130
Vertical axis scale display .........................130
X-Y plot function .......................................131
Vertical axis/horizontal axis scale
settings, integration full-scale setting........133
6 Changing System
Settings 135
Checking and changing settings...............135
Correcting the touch panel........................136
6.1 Initializing the Instrument............ 136
System reset.............................................136
Boot key reset...........................................136
6.2 Default Settings............................ 137
7 Saving Data and
Manipulating Files 139
7.1 Inserting and Removing USB
Flash Drives.................................. 139
7.2 File Operations Screen ................ 141
7.3 Saving Measurement Data .......... 142
Setting which measurement parameters
to save ......................................................142
Manually saving measurement data .........144
Automatically saving measurement data ..145
Automatic save operation using time
control .......................................................147
7.4 Saving Waveform Data ................ 148
7.5 Saving FFT Data ........................... 150
7.6 Saving Screenshots..................... 152
7.7 Saving Settings Data ................... 153
7.8 Loading Screenshots................... 154
7.9 Loading Settings Data ................. 154
7.10 File and Folder Operations.......... 155
Creating a folder .......................................155
Deleting les and folders ..........................155
Changing the name of a le or folder........156
Copying les .............................................156
Formatting a USB ash drive....................156
7.11 Measured Value Data Format ...... 157
Header structure .......................................157
Status data................................................160
Measured value data format .....................162
7.12 Waveform Binary Data Format.... 163

Contents
iii
10 Specications 205
10.1 General Specications ................ 205
10.2 Basic Specications .................... 206
10.3 Functional Specications............ 221
10.4 Measurement Parameter
Detailed Specications................ 231
10.5 Calculation Formula
Specications............................... 239
11 Maintenance and
Service 251
11.1 Repairs, Inspections, and
Cleaning ........................................ 251
11.2 Disposing of the Instrument ....... 253
Removing the lithium battery ....................253
11.3 Replacement Parts and Their
Service Lives ................................ 254
Replacing the fuse ....................................254
12 Troubleshooting 255
12.1 Frequently Asked Questions....... 255
12.2 Error Displays............................... 257
Startup errors and operating errors ..........257
Control errors............................................257
USB ash drive and le operation errors ..259
Appendix Appx.1
Appx. 1 Rack-mounting the
Instrument ........................ Appx.1
Rack-mounting hardware.....................Appx.1
Installation instructions ........................Appx.4
Appx. 2 Outline Drawings ............. Appx.6
Index Ind.1
Data format ...............................................163
8 Connecting External
Devices 169
8.1 Synchronization Interface
(Two-instrument Synchronized
Measurement)............................... 169
Connecting 2 instruments with the
L6000 Optical Connection Cable ..............170
8.2 Using D/A Output (Motor
Analysis and D/A-equipped
Models Only) (Analog and
Waveform Output) ........................ 173
Connecting an application-specic
device to the instrument............................173
Selecting output parameters.....................175
Output rates ..............................................178
Examples of D/A output ............................180
8.3 Using Motor Analysis (Motor
Analysis and D/A-equipped
Models Only)................................. 182
Connecting a torque meter and
tachometer................................................182
8.4 Controlling Integration with
External Signals ........................... 185
8.5 Connecting an LR8410 Link-
compatible Logger ....................... 188
9 Connecting the
Instrument to a
Computer 189
9.1 Using the LAN Interface .............. 190
Conguring LAN settings and building a
network environment ................................190
Connecting the LAN cable ........................192
Controlling the instrument remotely with
an Internet browser...................................193
9.2 Performing Instrument File
Operations from a Computer
(Using FTP) ................................... 195
Using FTP to connect to the instrument ...196
Performing le operations with FTP..........197
9.3 Using GP-IB .................................. 198
Connecting the GP-IB cable .....................199
Setting the GP-IB address ........................199
9.4 Using RS-232C ............................. 200
Conguring the D-sub 9-pin connector .....201
Connecting the RS-232C cable ................202
9.5 Canceling the Remote State
(Reverting to the Local State) ..... 203
9
8
7
6
5
4
3
12
11
Appx. Ind.
10
Appx.

iv

1
Measurement Process
Measurement Process
Be sure to read “Operating Precautions” (p. 11) before use.
Setting up the instrument
• “Instrument placement” (p. 12)
• “2.1 After Purchase” (p. 33)
• “2.2 Inspecting the Instrument before Use” (p. 34)
• Be sure to inspect the instrument before connecting it or turning it on.
• “2.3 Connecting the Power Cord” (p. 35)
• “2.6 Turning the Instrument On/Off” (p. 40)
To ensure accurate measurement, allow a warm-up period of at least
30 minutes to elapse after turning on the instrument before performing
zero-adjustment.
Connecting the instrument
• “2.7 Setting the Connection Mode and Current Sensors” (p. 41)
• Be sure to perform zero-adjustment before connecting the instrument.
• “2.8 Connecting the Instrument to the Measurement Lines (Zero-
adjustment)” (p. 43)
• “2.9 Verifying Proper Connections (Connection Check)” (p. 47)
Setting the measurement conditions
• “3 Viewing Measured Values”(p. 49)
• “4 Viewing Waveforms”(p. 93)
Viewing measured values
• “3 Viewing Measured Values”(p. 49)
• “4 Viewing Waveforms”(p. 93)
Saving data
• “Manually saving measurement data” (p. 144)
• Saving data with actual time control (p. 147)
• Saving data with timer control (p. 147)
• Saving data with interval control (p. 147)
• USB ash drive and the instrument’s internal memory (p. 139)
Analyzing data
• “8 Connecting External Devices”(p. 169)
• “9 Connecting the Instrument to a Computer”(p. 189)

2
System Architecture
System Architecture
Motor
Inverter
Battery
Load
EncoderTorque
sensor
Input channels
D/A output
Motor input
(External input) channels
Motor input
(Motor analysis and D/A-equipped models only)
Motor input
(Motor analysis and D/A-equipped models only)
Voltage input Current input
Some combination
of inputs
Two-instrument
synchronization Communications interfaces
• LAN
• GP-IB
• RS-232C
Computer, controller, etc.
Waveform output Analog output
Oscilloscope, memory
recorder, etc.
Logger,
comparator, etc.
External control
Integration control
Start/stop/reset
External input
Pyranometer output
Thermometer analog
output
Pulse signal
Waveform trigger
Current sensor
USB ash
drive
Internal memory
Encoder signalTorque sensor signal

3
Example Measurement Setups
Example Measurement Setups
Conversion efciency measurement of inverters with built-in SiC
Motor
3-phase
power
supply
Measuring the efciency of PV power conditioners
Inverter
Converter
Power conditioner
Load
Power system
AC measurement
DC measurement
Solar panel
EV/HEV motor analysis
Inverter Motor Load
Pulse
encoder
Torque
sensor
Battery

4
Example Measurement Setups

5
Introduction
Introduction
Thank you for purchasing the Hioki PW6001 Power Analyzer. To obtain maximum performance
from the product, please read the instruction manual rst, and keep it handy for future reference.
• One or more clamp-on sensors, AC/DC current sensors, or other sensors are required in order
to provide current input to the instrument. (These devices are referred to collectively as “current
sensor(s)” in this manual.) For more information, see the instruction manual for the current
sensor(s) you are using.
• One or more voltage cords (voltage measurement option) or other similar cords are required
in order to provide voltage input to the instrument. The instrument’s voltage input terminals
use standard φ4 mm CAT II (1000 V) or CAT III (600 V) compatible safety banana connectors.
Provide voltage cords as appropriate for your application.
Trademarks
• Microsoft and Windows are either registered trademarks or trademarks of Microsoft Corporation
in the United States and other countries.
• Adobe and Adobe Reader are trademarks of Adobe Systems Incorporated.
• Bluetooth®is a registered trademark of Bluetooth SIG, Inc.(USA). The trademark is used by
HIOKI E.E. CORPORATION under license.
• ParaniTM is a registered trademark of Sena Technologies, Inc.
Product model numbers
Right side
Product model number
Product model number Number of input
channels Additional functionality
PW6001-01 1 n/a
PW6001-02 2 n/a
PW6001-03 3 n/a
PW6001-04 4 n/a
PW6001-05 5 n/a
PW6001-06 6 n/a
PW6001-11 1 Motor analysis and D/A output
PW6001-12 2 Motor analysis and D/A output
PW6001-13 3 Motor analysis and D/A output
PW6001-14 4 Motor analysis and D/A output
PW6001-15 5 Motor analysis and D/A output
PW6001-16 6 Motor analysis and D/A output
In this manual, models equipped with motor analysis and D/A output functionality are referred to as “motor
analysis and D/A-equipped models.”

6
Verifying Package Contents
Verifying Package Contents
Once you have received the instrument, verify that it has not suffered any damage during shipment
before using it. Pay particular attention to accessories, panel switches, and terminals. If you discover any
damage or nd that the instrument does not operate as stipulated in its specications, please contact your
authorized Hioki distributor or reseller. When transporting the instrument, use the original packaging.
Verify that the packaging includes all contents.
PW6001 Power Analyzer Instruction manual
Power cord
D-sub 25-pin connector
(Motor analysis and D/A-equipped models only)

7
Verifying Package Contents
Options
Current measurement options
CT6841 AC/DC Current Probe (20 A)
CT6843 AC/DC Current Probe (200 A)
CT6844 AC/DC Current Probe (500 A)
CT6845 AC/DC Current Probe (500 A)
CT6846 AC/DC Current Probe (1000 A)
CT6862 AC/DC Current Sensor (50 A)
Cord length: 3m
CT6863 AC/DC Current Sensor (200 A)
Cord length: 3 m
9709 AC/DC Current Sensor (500 A)
Cord length: 3 m
CT6865 AC/DC Current Sensor (1000 A)
Cord length: 3 m
PW9100 AC/DC Current Box (50 A)
CT9900 Conversion Cable
(PL23 receptacle/ME15W plug)
3273-50 Clamp On Probe (30 A)
3274 Clamp On Probe (150 A)
3275 Clamp On Probe (500 A)
3276 Clamp On Probe (30 A)
CT6700 Current Probe (5 A)
CT6701 Current Probe (5 A)

8
Verifying Package Contents
Voltage measurement options
L9438-50 Voltage Cord
(Banana connector/banana connector; red and
black × 1 ea.; cord length: approx. 3 m)
L1000 Voltage Cord (banana connector/banana
connector; red, yellow, blue, and gray × 1 ea.;
black × 4; cord length: approx. 3 m with alligator
clips)
9243 Grabber Clip (red and black × 1 ea.)
Connection options
L6000 Optical Connection Cable (10 m)
L9217 Connection Cord (isolated BNC; 1.7 m; for motor
input)
9642 LAN Cable
(CAT 5e with cross conversion connector; 5 m)
9637 RS-232C Cable (9-pin/9-pin; cross; 1.8 m)
9151-02 GP-IB Connector Cable (2 m)
9444
Connection Cable
(For external control use; 9-pin/9-pin; straight;
1.5 m)
Other options
Special-
order Rack mount hardware (for EIA or JIS)
Special-
order
Carrying case
(Rigid trunk type; with casters)

9
Safety Information
Safety Information
The PW6001 has been designed and tested in accordance with the IEC 61010 safety standard and
shipped in a safe state. However, failure to adhere to the precautionary information and follow the
instructions provided in this instruction manual may render safety-related functionality provided by
the instrument inoperable.
Before using the instrument, be sure to carefully review the following important safety information.
DANGER
Improper use of the instrument may result in bodily injury or equipment damage.
Read this instruction manual carefully and ensure that you understand its contents
before operating the instrument.
WARNING
Electricity poses a number of hazards, including electric shock, overheating, re,
and arc discharge (caused by a short). Individuals using an electrical measuring
instrument for the rst time should be supervised by a technician who has experience
in electrical measurement.
Safety-related notations
This manual classies safety information on the basis of the severity of the associated risk and
hazard level using the following categories.
DANGER Indicates an imminent hazard that could lead to serious injury or death.
WARNING Indicates a hazard that could lead to serious injury or death.
CAUTION Indicates a hazard that could lead to minor injury or that could be expected to
result in equipment or other damage.
IMPORTANT Indicates information or content that is especially important to keep in mind when
operating the instrument or performing maintenance work.
Indicates a high-voltage hazard.
Warns that failure to verify safety or improper use of the instrument could lead to
electric shock, burns, or death.
Indicates an action that you must refrain from performing.
Indicates an action that you must perform.
*Indicates that there is additional information below.
p. Indicates a reference page number.
[ ] Key names are enclosed in parentheses.
ON Text shown on the instrument’s screen is formatted in bold.
Unless otherwise noted, the term “Windows” is used in this manual to refer to Windows XP, Windows Vista,
and Windows 7.

10
Safety Information
Symbols displayed on the instrument
Indicates the need for caution or a hazard.
When this symbol is displayed on the
instrument, refer to the corresponding
section of the instruction manual.
Indicates the ground terminal.
Indicates AC (Alternating Current)
Indicates the power supply’s “on” and “off”
positions.
Symbols related to 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 EC Directive.
Accuracy
We dene measurement tolerances in terms of f.s. (full scale), rdg. (reading) and dgt. (digit) values, with
the following meanings:
f.s. (Maximum display value)
The maximum displayable value. This is usually the name of the currently selected range.
rdg. (Reading or displayed value)
The value currently being measured and indicated on the measuring instrument.
dgt.
(Resolution)
The smallest displayable unit on a digital measuring instrument, i.e., the input value that causes
the digital display to show a “1” as the least-signicant digit.
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.
DANGER
•Never use a measuring instrument whose measurement category is lower than the
location in which it will be used. Doing so may result in a serious accident.
•Never use a measuring instrument with no category labeling in a CAT II to CAT IV
measurement category. Doing so may result in a serious accident.
The PW6001 conforms to the safety requirements for CAT II (1000 V) and CAT III (600 V) measuring instruments.
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
Service entrance
Service drop
CAT IV
Power meter
CAT III
Fixed installation
Distribution panel

11
Operating Precautions
Operating Precautions
Please observe the following precautions to ensure that you can use the instrument safely and fully utilize
its functionality.
Checking the instrument before use
Before using the instrument, check the instrument for any damage that may have been sustained
while in storage or transit, inspect it, and verify that it is operating properly. If you discover any
malfunction or damage, contact your authorized Hioki distributor or reseller.
DANGER
Damage to voltage cords or the instrument may result in electric shock. Check
voltage cords for worm insulation and exposed metal before use. If you nd
damage, replace the cords with those specied by our company. Failure to do so
may result in electric shock.
WARNING
To prevent electric shock, verify that the white or red portion of the cable
(insulation layers) are not exposed. If any color is visible from the inside of the
cable, do not use the 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.
WARNING
•Exposed to direct sunlight or high temperature
•Exposed to corrosive or combustible gases
•Exposed to water, oil, chemicals, or solvents
•Exposed to high humidity or condensation
•Exposed to a strong electromagnetic eld or electrostatic charge
•Exposed to high quantities of dust particles
•Near induction heating systems (such as high-frequency induction heating
systems and IH cooking equipment)
•Susceptible to vibration
CAUTION
• Do not place the instrument on an unstable bench or inclined surface. Doing so may
cause the instrument to fall off the surface or to fall over, resulting in bodily injury or
equipment damage.
• Do not use an uninterruptible power supply (UPS) or a DC-AC inverter that produces
rectangular waves or pseudo-sine-wave output to power the instrument. Doing so
may damage the instrument.

12
Operating Precautions
Instrument placement
• Place the instrument right-side up.
• Do not block the instrument’s air vents.
• Leave at least 20 mm between the instrument’s air vents and surrounding surfaces.
See “1.3 Part Names and Functions” (p. 19).
At least 20 mm on all sides
Handling of the instrument
DANGER
To prevent electric shock, never remove the instrument’s enclosure. There are
high-voltage and high-temperature parts inside the instrument.
CAUTION
• To prevent damage to the instrument, avoid exposing it to vibration or mechanical
shock when transporting or otherwise handling it. Exercise particular care not to drop
the instrument.
• If the instrument malfunctions or displays an error during use, consult
“12 Troubleshooting” (p. 255) and then contact your authorized Hioki distributor or
reseller.
• Carry the instrument using its handle after disconnecting all cords and removing the
USB ash drive.
• Do not press down on the touch panel with excessive force or use hard or sharp
objects to press down on the touch panel. Doing so may result in equipment damage.
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
Operating Precautions
Cord and current sensor handling
DANGER
• Always connect voltage cords and current sensors to the secondary side of a
circuit breaker. The secondary side will be protected by the breaker in the event
of a short. Do not measure the primary side of a circuit breaker as it will carry a
larger current, increasing the amount of damage in the event of a short-circuit.
•When using the instrument, always use the designated power cord. Use of a
power cord other than the designated cord may result in re.
•Connect current sensors and voltage cords to the instrument before connecting
them to a live measurement line. Observe the following precautions to prevent
short-circuits and electric shock:
•Do not place the metal part of the tips of voltage cord clips across two
measurement lines at the same time. Never touch the metal part of the tips of
voltage cord clips.
•When a current sensor is in the open position, do not place the metal part
of its clamp tip across two measurement lines at the same time or use the
sensor on a bare conductor.
•Do not connect voltage cords unnecessarily.
•To prevent short-circuit or bodily injury, use current sensors with circuits
whose voltage is less than or equal to the sensor’s maximum rated input-to-
ground voltage. Do not use current sensors with bare conductors. (For more
information about a current sensor’s maximum rated input-to-ground voltage,
refer to its instruction manual.)
WARNING
•When using an AC/DC Current Sensor such as the CT6862, it is necessary to
cut the measurement line in order to route it through the sensor. To prevent
an electric shock or short-circuit, turn off all equipment before connecting the
sensor.
•To prevent an electric shock or short-circuit, use the designated voltage cords
to connect the measurement lines to the instrument’s voltage input terminals.
CAUTION
• To ensure safety, use only voltage cords designated by our company.
• To prevent a break in instrument wiring, grip the plug (not the cord) when unplugging
the power cord from an outlet or disconnecting it from the instrument.
• Exercise caution as conductors being measured may become hot.
• To avoid damaging cord insulation, do not step on cords or allow them to be pinched
between other objects.
• If a voltage cord melts, its metal conductor may be exposed. Do not use a cord whose
metal conductor is exposed. Doing so may result in electric shock, burns, or other
injury.
• Do not drop current sensors or subject them to mechanical shock. Doing so may
damage the core joint and adversely impact measurement. When disconnecting a
connector, always release the lock and then grip the connector to pull it out. Pulling
on connectors with excessive force before releasing the lock or pulling on cables will
cause damage to connectors. (p. 36)
• Do not connect or disconnect connectors while the instrument is on or while a sensor
is clamped to the conductor being measured. Doing so may damage the instrument or
current sensor.

14
Operating Precautions
Handling of the L6000 Optical Connection Cable
WARNING
When connecting an L6000 Optical Connection Cable that is already connected
to an operating optical output to the instrument, never look directly at the tip of
the cable or observe it with a device such as a magnifying glass. Doing so may
adversely affect your eyes or damage your vision.
CAUTION
• When connecting an L6000 Optical Connection Cable to the instrument, exercise care
to ensure that there is no dirt or dust in the optical connector. In particular, exercise
caution concerning the end face (ferrule). Accurate measurement may be impossible
if the cable is connected while there is dirt or other foreign matter on the face, or if the
face is scratched or otherwise damaged.
• The instrument’s two-instrument synchronization connector and the L6000 Optical
Connection Cable’s optical connector are precisely machined parts. When not in use,
always attach the included dust cap to each.
• When cleaning the center of an optical connector, do not apply excessive force to the
cleaning cloth. Doing so may damage the connector, preventing it from performing to
specications.
• To prevent damage to the L6000 Optical Connection Cable, observe the following
precautions:
• Do not insert the optical connector at an
angle.
• Do not pull on the cable with excessive
force.
• Do not bend the cable at the neck of the
optical connector.
• Do not allow the cable to become kinked.
• Do not bend or twist the cable. • Do not touch the end face (ferrule).
• Clean the optical connector end face (ferrule) of the L6000 Optical Connection Cable each time
it is connected.
• To clean the L6000 Optical Connection Cable’s optical connectors, use the 9738 Optical
Connector Cleaner.