Pulse_Width; Seg_Arb_Define - Keithley 4200A-SCS Reference Manual

Section 13: LPT library function reference
The maximum pulse width that can be set depends on the selected period for the pulse. For example,
if the period is set for 500 ns, the maximum pulse width that can be set for the fast speed is 490 ns
(500 ns − 10 ns = 490 ns).
The pulse width setting takes effect immediately during continuous pulse output. Otherwise, the width
setting takes effect when the next trigger is initiated. The pulse_trig command is used to trigger
continuous or burst output.
Example
pulse_width(VPU1, 1, 250e-9)
Sets the pulse width for channel 1 to 250 ns.
Also see
pulse_period (on page 13-148)
pulse_range (on page 13-149)
pulse_source_timing
pulse_trig (on page 13-152)

seg_arb_define

This command defines the parameters for a Segment Arb
Usage
int seg_arb_define(int instr_id, long chan, long nsegments, double *startvals,
double *stopvals, double *timevals, long *triggervals, long *outputRelayVals);
instr_id
chan
nsegments
startvals
stopvals
timevals
triggervals
outputRelayVals
13-162
(on page 13-116)
The instrument identification code of the pulse card, such as VPU1 or VPU2
Channel number of the pulse card: 1 or 2
The number of values in each of the arrays (1024 maximum)
An array of start voltage values for each segment (in volts)
An array of stop voltage values for each segment (in volts)
An array of time values for each segment (20 ns minimum)
An array of trigger values:
•
Trigger low: 0
•
Trigger high: 1
An array of values to control the high endurance output relay:
•
Open: 0
•
Closed: 1
Model 4200A-SCS Parameter Analyzer Reference Manual
®
waveform.
4200A-901-01 Rev. C / February 2017