13. PROBE LO: Connector used to attach the Probe-LO test lead to the DUT.
When used with an appropriate test lead, this terminal connects one side of the
MD (measuring device) to the DUT during Applied Part Line Leakage tests.
The terminal is always used in conjunction with the Probe-HI terminal.
14. GND: Connector used to attach the adapter box Ground lead to the
instrument.
15. CASE (Optional): Connector used to attach the return lead to the DUT case
or dead metal. Provides the return for the Ground Bond, Dielectric Withstand,
and Insulation Resistance tests. During a Line Leakage test and Functional
Run test, this terminal is isolated from the test circuits. See section 8. Options
for more information.
16. Safety Tester Connections (Optional): Connector used to interface the 620L
to an Associated Research electrical safety tester. See section 8. Options for
more information.
17. CHASSIS GROUND (EARTH) CONNECTION: This terminal should be
connected to a good earth ground before operation.
18. FUSE RECEPTACLE: To change the fuse, unplug the power (mains) cord and
turn the fuse receptacle counter-clockwise. The fuse compartment will be
exposed. Please replace the fuse with one of the proper rating.
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