Keithley 4200A-SCS Reference Manual page 954

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Model 4200A-SCS Parameter Analyzer Reference Manual

pulse_meas_timing

This command sets the measurement windows.

int pulse_meas_timing(int instr_id, int chan, double, StartPercent, double

StopPercent, int NumPulses);

StartPercent

Use the pulse_meas_timing command to set measurement timing. For spot mean measurements,

portions of the amplitude and base levels are specified for sampling. For pre-data and post-data

waveform measurements, a percentage of the entire pulse duration is specified. See

(on page 5-74) for details on pulse measurement timing.

The figure below shows example start and stop locations spot mean measurements are made. Three

measured samples are taken on the amplitude and six samples are taken on the base level. The start

and stop percentage values indicate the portions of the pulse that are sampled.

4200A-901-01 Rev. C / February 2017

The instrument identification code of the pulse card, such as VPU1 or VPU2

Channel number of the pulse card: 1 or 2

Start location for measurements:

Spot mean measurements: Start location, specified as a percentage of the

widths for the amplitude and base level (see Details)

Waveform: Pre-data for the amplitude, specified as a percentage of the

amplitude pulse duration (see Details)

Stop location for measurements:

Spot mean measurements: Stop location, specified as a percentage of the

widths for the amplitude and base level (see Details)

Waveform: Post-data for the amplitude, specified as a percentage of the

amplitude pulse duration (see Details)

Number of pulses to output and measure (1 to 10,000)

Figure 504: Spot mean measurements example

Section 13: LPT library function reference