Oscilloscope Probe Deskew; Connect Probes To Deskew Fixture - Keysight PD1500A System Installation Manual

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Oscilloscope Probe Deskew

After the Oscilloscope Probe Compensation and System Calibration, the last step

is to run Deskew. Deskew has the greatest impact on both On and Off Delay

times and hence affects the total Switching Time. Both On and Off Switching

Energies are also affected.

Hardware Setup

Because the oscilloscope has only four input channels and the DPT test fixture

uses only four oscilloscope probes at a time, then only four probes may be

deskewed at one time. Typically, either the N2819A Differential Probe (for

measuring I

they both used at the same time. Deskew the probes that you will be using in

your test. Figure 14 below shows the typical configuration for Deskewing the

oscilloscope probes.

1 Locate the Deskew oscilloscope probe connectors on the main Test Fixture.

2 Remove the SMA cable from the Low Side SMA connector on the Test Fixture

Connect Low-Side (Channel 1) of Waveform Generator to Cal (Deskew) Input

Figure 13 33512B Function Generator Connected to Deskew Fixture

Keysight Double-Pulse Test System Installation Guide

) or the N2873A (V

See Figure 13 below.

and connect it to the Cal (Deskew) Input SMA connector.

PD1500A Double-Pulse Test System Calibration

) probe are used in a DPT test; rarely are

CLAMP

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