3: Setting up PMUs and PGUs in Clarius Model 4200A-SCS Pulse Card (PGU and PMU)
3-10 4200A-PMU-900-01 Rev. B March 2023
Fixed current measurement ranges (PMU only)
10 V range 40 V range
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If you are using an RPM, additional current measurement ranges become available to the PMU. The
following table lists the current measurement ranges for the PMU when using the RPM. The 10 mA
measure range for the 10 V source range has better accuracy than the 10 mA range for the 40 V
source range.
Current measurement ranges for the PMU with RPM
10 V range 40 V range
The current range options are:
• Auto: The instrument automatically optimizes the measurement range as the test progresses.
This option provides the best resolution when the measurements span several decades. However,
time delays can occur with range changes that can limit the measurement speed.
• Limited Auto: A compromise between Auto and a fixed range option. It allows you to specify the
minimum range that the PMU uses when it automatically optimizes the current measurements.
This option reduces test time when you do not need maximum resolution at minimum currents.
The available ranges are limited by the chosen pulse timing parameters. For additional
information, see PMU minimum settling times versus current measure range.
• Specific ranges: You can select a fixed measurement range.
The available ranges are limited by the pulse timing parameters. For additional information, see
PMU
minimum settling times versus current measure range (on page 3-24).
Low Range
Available when the Measure Range is set to Limited Auto. This sets the minimum range that the
instrument uses.
Current Sample Waveform
Makes current measurements on the waveform. Available when the Test Mode is set to
Waveform Capture.
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