Hioki DSM-8542, Instruction Manual, Page: 32 / 140

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5 Preparations for Measurement
5.1
Connecting Meter and Power Supply Unit
This meter measures both insulation resistance and a current, externally connecting a
voltage source for measurement of voltage and other parameters. A voltage source is
indispensable to measure a leakage current by applying voltage, as well as resistance.
A dedicated power supply unit is available as an option to the meter, allowing operation
of the unit by the keyboard and LCD screen of the meter. This option power supply unit
is most suitable in obtaining maximum performance of the DSM-8542.
5.1.1 Connecting dedicated power supply unit PSU-8541
Fig. 5.1 illustrates connection of the DSM-8542 and PSU-8541. Use a cable for
connection specified in Table 1 or its equivalent.
5.1.2 Connecting power supply other than dedicated power supply unit
Fig. 5.2 illustrates connection of the DSM-8542 and external power source other than
PSU-8541. Use a cable for connection matching specification requirements of the
DSM-8542 and external power source.