3: Setting up PMUs and PGUs in Clarius Model 4200A-SCS Pulse Card (PGU and PMU)
3-20 4200A-PMU-900-01 Rev. B March 2023
Number of Pulses
The number of pulses for the PMU channel to output and measure for each step in the sweep (1 to
10,000). If you enabled autorange, load-line effect compensation (LLEC), or thresholds, the number
of pulses is output multiple times for each step in a sweep.
Sweep Master
If there are multiple steps or sweeps in a test, use this to designate which instrument is the master.
Refer to Step or sweep multiple device terminals in the same test (on page 3-39) for detail.
Timing Parameters
The following figure shows parameter stepping and sweeping examples. In these examples, the
Number of Pulses parameter is set to 3, so there are three pulses per period.
Figure 47: Parameter stepping sweeping examples
• Period: The pulse period steps or sweeps from a short period to a long period (or from a long
period to a short period).
• PW: The pulse width (PW) steps or sweeps from a short pulse width to a long pulse width (or
from a long width to a short width).
• Rise: The pulse rise time steps or sweeps from a long rise time to a short rise time (or from a
long rise time to a short rise time).
• Fall: The pulse fall time steps or sweeps from a long fall time to a short fall time (or from a long
fall time to a short fall time).
In the figure above, the ellipsis (...) between each burst of pulses indicates additional time that the
pulse channel is outputting 0 V dc (the pulse channel is not pulsing). This time allows for
analog-to-digital (A/D) sample processing and, if enabled, measure ranging and LLEC. For more
information on LLEC, see How LLEC adjusts pulse output to the target levels (on page 2-25
).
For the 40 V range for the 4220-PGU and 4225-PMU in pulse mode, the pulse generator is limited to
slew no more than 160 MV/s when pulsing more than 10 s.
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