Hioki 3181-01, Instruction Manual

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Chapter 5 Operation
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WARNING
The power supply voltage for this unit is switchable.
To avoid electrical accidents, check that the voltage
selector is set correctly for the supply voltage you
are using.
In order to prevent an electrical accident, do not
make any connections while the power supply or
the device to be measured is on. Turn off the
power for both devices before proceeding.
In order to maintain safety and assure the stable
operating performance of this unit, be sure to
connect the ground terminal to a proper ground.
To avoid damage to the unit, do not input a
voltage/current exceeding the specified maximum to
the input terminals.
NOTE
Chapter 5
Operation
5.1 Preparing for Measurement
Because of the internal circuit design, measurement of
load with a certain frequency component will cause cyclic
fluctuation (instability) in the power reading.
This has been observed especially for distorted waveforms
with large harmonic components in multiples of 512 Hz.