179
for(i=0;i<19;i++){
//Vary edge by 5 nsec steps
viPrintf(vi,"PULSe:TRANsition %E\n",0.00 i * 0.000000005);
Sleep(300);
//Wait
300
msec
}
viClose
(vi);
viClose
(defaultRM);
}
Example: Pulse Width Modulation (PWM)
This program (found in the “Examples\PWM” subdirectory on the
CD-ROM) configures a pulse waveform with duty cycle, which is then slowly
modulated
by a triangle waveform.
//Pulse Width Modulation (PWM)
#include <visa.h>
#include <stdio.h>
void main (int argc,char *argv[])
{
ViSession
defaultRM,vi=0;
ViStatus
status;
char
instrDesc[]="USB0::5710::5100::TW00009009::0::INSTR";
viOpenDefaultRM
(&defaultRM);
status = viOpen(defaultRM,instrDesc, VI_NULL,VI_NULL, &vi);
if (status != VI_SUCCESS){
printf("Can
not
Open
device:\"%s\"\n",instrDesc);
return;
}
//This program uses low-level SCPI commands to configure
//the function gnerator to output an PWM waveform.
//The pulse is set up with a duty cycle of 35% and a depth
//of 15%, and will vary in width from 20% to 50% with the
//modulation. The pulse may also be configured in time
Summary of Contents for G5100A
Page 5: ...5 D APPLICATION PROGRAMS 173 ...
Page 71: ...71 Schematic of Receiver ...
