Figure 68: PMU Waveform Capture (measurement overflow on the 10 mA current range)
4220-PGU and 4225-PMU output limitations
In addition to the maximum output of the PMU and PGU instrument cards (see DUT resistance
determines pulse voltage across DUT (on page 4-15)), the pulse instrument cards also have a limit for
the number of large amplitude pulse transitions within a period of time. The 4200A-SCS system
enforces limits on the quantity and amplitude of waveforms that the 4220-PGU and 4225-PMU may
generate. A test exceeding these internal limits generates error code -830 (see pulse_init in
Model 4200A-SCS LPT Library Programming for more information). To fix this problem, increase
pulse period, decrease voltage amplitude, or both.
Configure the PGU, PMU, and RPM using tests
To configure and control the PGU, a user test module (UTM) is needed. You can also use UTMs to
configure and control the PMU and RPM preamplifier. For UTM programming, see “LPT commands
for PGUs and PMUs” in Model 4200A-SCS LPT Library Programming.
You can use interactive test modules (ITMs) to configure and control a PMU and RPM preamplifier.
Refer to “Configure a simple test” in Model 4200A-SCS Clarius User's Manual for information on
configuring an ITM for the PMU.
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