Agilent Technologies N5181A/82A, N5183A Programming Examples Gpib Programming Interface Examples

Programming Examples

GPIB Programming Interface Examples

#include "windows.h" #include <conio.h>

#define MAX_CNT 1024

int sweep=1; // End of sweep flag

/* Prototypes */

ViStatus _VI_FUNCH interupt(ViSession vi, ViEventType eventType, ViEvent event, ViAddr addr);

int main ()

{

ViSession defaultRM, vi;// Declares variables of type ViSession // for instrument communication

ViStatus viStatus = 0;// Declares a variable of type ViStatus // for GPIB verifications

char rdBuffer[MAX_CNT];// Declare a block of memory data

viStatus=viOpenDefaultRM(&defaultRM);// Initialize VISA session if(viStatus < VI_SUCCESS){// If problems, then prompt user printf("ERROR initializing VISA... exiting\n"); printf("\n");

return -1;}

//Open session to gpib device at address 19

viStatus=viOpen(defaultRM, "GPIB::19::INSTR", VI_NULL, VI_NULL, &vi);

if(viStatus){	// If problems then prompt user
printf("ERROR: Could not open communication with
	instrument\n");
printf("\n");
return -1;}
viClear(vi);	// Clears the signal generator
viPrintf(vi, "*RST\n");	// Resets signal generator

//Print program header and information

printf("** End of Sweep Service Request **\n"); printf("\n");

printf("The signal generator will be set up for a step sweep mode operation.\n");

printf("An ’*’ will be printed while the instrument is sweeping. The end of \n");

printf("sweep will be indicated by an SRQ on the GPIB and the program will end.\n");

printf("\n");

Agilent N518xA, E8663B, E44x8C, and E82x7D Signal Generators Programming Guide 95