Keithley 4200A-SCS Reference Manual page 367

Section 6: Clarius Model 4200A-SCS Parameter Analyzer Reference Manual
For pulse I-V, spot mean measurements are made on pulse amplitude and base level. You can
measure voltage and current. The next figure shows the measure windows for spot mean
measurements. The start measure and stop measure points for ITMs are fixed at 75 percent and 90
percent for both amplitude and base level.
Figure 262: Pulse I-V (spot mean measurements)
The number of measurement samples that are made is relative to the widths of the magnitude and
base level. For example, if the width of the magnitude is 1 µs, the measure window is 750 ns to
900 ns. If the width of the base level is 2 µs, the measure window is 1500 ns to 1800 ns.
For waveform capture, measurement samples are acquired on pulse rise, pulse amplitude, pulse fall,
and a small portion before the rise (pre-data) and after the fall (post-data) on the base level, as shown
in the next figure.
Figure 263: Waveform capture
For detail on spot mean measurements, refer to Spot mean measurements (on page 5-70). For user
test module (UTM) programming, refer to the pulse_meas_sm (on page 13-108) function.
For detail on waveform measurements, refer to Waveform measurements (on page 5-72). For UTM
programming, the pulse_meas_wfm (on page 13-111) function is used to configure waveform
measurements.
For UTMs, the pulse_meas_timing (on page 13-109) function allows you to adjust the measure
window for the pulse I-V test mode or the pre-and post-data settings for the waveform measurements.
For ITMs, the measure window and pre-data and post-data settings are fixed.
6-98 4200A-901-01 Rev. C / February 2017