Pulse_Sample_Rate; Pulse_Source_Timing - Keithley 4200A-SCS Reference Manual

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Section 13: LPT library function reference

pulse_sample_rate

This command sets the measurement sample rate.

int pulse_sample_rate(INSTR_ID instr_id, double Sample_rate);

Standard and Segment Arb

Use this card-based command to set the measurement sample rate. The sample rate is the number

of measurements (per second) that are performed by the PMU. The sample rate can be set from

200E6 to 200E6/n, where n = 1 to 200,000. The minimum sampling rate is 1E3 samples per second.

The sample rate is a fixed rate (not adjustable within a test). For multi-card tests, set all cards to the

same sample rate.

If a requested sample rate does not match an available rate, the next higher rate is used. For

example, if 90E6 samples per second is sent, the sampling rate is set to 100E6 samples per second

pulse_sample_rate(PMU1, 100E6);

This example command sets the sampling rate of the PMU to 100E6 samples per second.

This command sets the pulse period, pulse width, rise time, fall time, and delay time.

int pulse_source_timing(int instr_id, int chan, double period, double delay, double

width, double rise, double fall);

The instrument identification code: PMU1, PMU2, and so on

Sample rate: 200E6, 100E6, 50E6, 40E6, 33E6, 29E6, ... 1E3

The instrument identification code: VPU1, VPU2, PMU1, PMU2, and so on

Channel number of the pulse card: 1 or 2

Pulse period (in seconds) for both channels

Delay time (in seconds) for the selected channel

Pulse width (in seconds for the selected channel

Rise time (in seconds) for the selected channel

Fall time (in seconds) for the selected channel

Model 4200A-SCS Parameter Analyzer Reference Manual

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