METRON QA-ST, User And Service Manual

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The purpose of this test is to determine if there is any DC resistance
between the cabinet of the device under test, or DUT, and the Mains
Earth on the DUT.
4. Press “Ground Wire Res. DC”. QA-ST will display over
range (1).
5. Connect a Kelvin Test Lead in series with an ammeter directly to
DUT Earth. QA-ST will display 102mA ± 2%.
6. Next, connect as shown in the below figure, without the am-
meter and test leads.
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