Spot Mean Measurements; Spot Mean Discrete Readings - Keithley 4200A-SCS User Manual

Section 4: Pulse card concepts

Spot mean measurements

Spot mean measurements sample a portion of the amplitude and a portion of the base level (see
Spot mean measurement timing
percentage. Note that you can return an individual spot mean for each pulse (see
(on page 4-24)), or have a single spot mean for all NumPulses (see
readings
readings (on page 4-25)).
If you enable both amplitude and base spot means, each pulse has two voltage measurements and
two current measurements (see pulse_fetch).

Spot mean discrete readings

The averaged voltage and current readings for every sampled pulse period are returned in a single
data set. The figure below shows how spot mean discrete readings are returned as a data set for two
pulse periods. With all voltage and current readings enabled, four readings are returned for each
pulse. The measured samples are averaged to yield the mean average readings. When time stamps
are enabled, a time stamp is included in the data set after each mean reading.
4-24
(on page 4-27)). The portions to be sampled are specified as a
Figure 93: Returned data set for spot mean discrete readings
Model 4200A-SCS Pulse Card (PGU and PMU) User's Manual
4200A-PMU-900-01 Rev. A December 2020
Spot mean discrete
Spot mean average