Measure Modes - Keithley 4200A-SCS User Manual

Section 4: Pulse card concepts

Measure modes

The measure modes for the PMU are discrete pulses and average pulses..
Discrete pulses
For pulse I-V (spot mean), the averaged voltage or current readings for every sampled pulse period
are acquired.
For waveform capture, enabled voltage and current readings and timestamps for every sample of the
waveform are acquired.
For ITM operation, the readings are placed in the Analyze sheet.
See Spot mean discrete readings
pulse I-V. For UTM programming, the discrete pulse measure mode is called spot mean discrete.
The pulse_meas_sm function is used to select the discrete acquisition type.
See Waveform discrete readings
waveform capture. For UTM programming, the discrete pulse measure mode is called waveform
discrete. The pulse_meas_wfm function is used to select the discrete acquisition type.
Average pulses
For pulse I-V (spot mean), the mean values of two or more pulses are averaged. Think of it as the
"mean of the means."
For waveform capture, each acquired reading is a mean average of the corresponding samples for all
the pulses in the burst.
See Spot mean average readings
for pulse I-V. For UTM programming, the average pulse measure mode is called spot mean average.
The pulse_meas_sm function is used to select the average acquisition type.
See Waveform average readings
waveform capture. For UTM programming, the average pulses measure mode is called waveform
discrete. The pulse_meas_wfm function is used to select the average acquisition type.
4-4
Model 4200A-SCS Pulse Card (PGU and PMU) User's Manual
(on page 4-24) for details on the discrete pulses measure mode for
(on page 4-26) for details on the discrete pulses measure mode for
(on page 4-25) for details on the average pulses measure mode
(on page 4-27) for details on the average pulses measure mode for
4200A-PMU-900-01 Rev. A December 2020