Keysight DP0010A, Руководство пользователя

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32 DP0010A/11A/12A/13A Differential Active Probes User’s Guide
3
Setting up and Using DP0010A/12A/13A Probes
Probing Ungrounded Devices
If the DUT is not grounded to the oscilloscope via the AC mains ground, you must
establish the ground connection by connecting the DUT ground to the probe
ground. An example of such a situation is when you are making a differential
measurement on a device with floating ground.
To make the ground connection, use the ground lead accessory supplied with the
probe.
1
Connect the ground lead to the ground connection on the probe.
2
Connect the socket end of the ground lead to DUT’s header pin.
Figure 10 Connecting DUT Ground to Probe Ground
Probing Setup for Single-Ended Measurements
DP0010A/11A/12A/13A probes are differential and are best suited to probe not
just differential but also single-ended signals.
To probe single-ended signals:
• Connect the probe’s “+” lead to the single-ended signal.
• Connect the probe’s “–” lead to ground.
• Select
Probe Offset as the offset behavior to be used. The offset is then applied
at the probe to preserve dynamic range. It is added to or subtracted from the
positive leg of the probe to bring the signal within the probe’s dynamic range.
This method of applying probe offset allows the full benefits of differential
probing for single-ended signals without sacrificing offset range.
Ground Connection
on the Probe
Ground Lead
Accessory Supplied
with the Probe