3: Setting up PMUs and PGUs in Clarius Model 4200A-SCS Pulse Card (PGU and PMU)
3-18 4200A-PMU-900-01 Rev. B March 2023
For UTMs, the pulse_meas_timing function allows you to adjust the measure window for the pulse
I-V test mode or the pre-data and post-data settings for the waveform measurements. For ITMs, the
measure window and pre-data and post-data settings are fixed.
Function descriptions are provided in Model 4200A-SCS LPT Library Programming.
Measure Mode
For Measure Mode, you can select Average Pulses or Discrete Pulses.
When Average Pulses is selected for Pulse IV, the measured values of two or more pulses are
averaged. See the Pulse IV (Average pulses) measurement example (on page 3-18
). For Waveform
Capture, select Average Pulses to average each sample in the waveform with the same point in
subsequent waveforms, for each pulse specified by the number of pulses.
When Discrete Pulses is selected for Pulse IV, the measured value of each pulse is acquired. Refer
to the Pulse IV (Discrete pulses) measurement example (on page 3-18
). For Waveform Capture, each
sample for every waveform is recorded in the Analyze sheet. Refer to the Waveform Capture
(Discrete Pulses) measurement example (on page 3-19).
Pulse I-V (Average pulses) measurement example
For the example shown in the following figure, the mean of three pulses is averaged into a single
reading (also called a spot mean). One averaged reading is yielded for each pulse. The result of the
three averaged readings is placed in the Analyze sheet.
Figure 44: Pulse IV - Average pulses
Pulse I-V (Discrete pulses) measurement example
For the example shown in the following figure, the readings are the result of a pulsed IV sweep from 2
V to 5 V (in 1 V steps) with the discrete number of pulses set to three. This test yields the spot mean
of the three pulses for each step of the sweep. The Analyze sheet for the 12 readings are also
included in the following figure.
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