To Probe Ungrounded Devices - Keysight InfiniiMax III+ Series User Manual

To Probe Ungrounded Devices

If the DUT is not grounded to the oscilloscope via the AC mains ground, connect
the DUT ground to the oscilloscope ground. An example of a floating ground is a
battery-powered device.
Without the ground connection, the common mode voltage is not guaranteed to
be within the common mode range of the probe amplifiers.
Failure to connect the ground may result in the display of inaccurate waveforms.
N OT E
Figure 17 Grounding the DUT to an S-Series Oscilloscope
InfiniiMax III+ Series Probes User's Guide
Using InfiniiMax III+ Series Probes
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