HBM Genesis series Technical Note page 16

GN610, GN611 Isolation and type testing
Active input switch test
To guarantee the stability of the channels, the input relays are tested with the
maximum input voltage (1000 V) applied. The inputs of the channels have been
switched from isolated GND to DC by the input relay, resulting in the 1000 V
being applied to the input as a step pulse.
This test is done with the highest input range (± 1000 V) and also repeated with
the lowest input range (± 20 mV), both with an input voltage of 1000 V and
repeated for over 1000 times. These tests all passed successfully.
Figure 5.2: Engineering test input switching
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