13: LPT library function reference Model 4200A-SCS Parameter Analyzer
13-148 4200A-901-01 Rev. C / February 2017
pulse_period
This command sets the period for pulse output.
Usage
int pulse_period(int instr_id, double period);
The instrument identification code of the pulse card, such as VPU1 or VPU2
Pulse period (in seconds):
• 5 V range: 20e-9 to 1
• 20 V range: 500e-9 to 1
•
Pulse modes
Standard
Details
This command sets the pulse period for both channels of the pulse card. As shown below, the pulse
period is measured at the median point (50 percent between the high and low pulse values) from the
rising transition of the pulse to the rising transition of the next pulse.
The pulse period setting takes effect immediately during continuous pulse output. Otherwise, the
period setting takes effect when the next trigger is initiated. The pulse_trig command is used to
trigger continuous or burst output.
Example
pulse_period(VPU1, 200e-9)
Sets the pulse period of the pulse card to 200 ns.
Also see
pulse_trig (on page 13-152)
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