Agilent Technologies Model A.08.xx manual 150

Programming Examples

Status Register–Determine When a Measurement is Done

/*	SENS:AVER:STAT ON	*/
/* - Trigger a measurement, and set OPC bit when done		*/
/*	INIT:IMM	*/
/*	*OPC	*/
/* - Wait for the SRQ		*/
/* - When an interrupt occurs, poll all instruments		*/

/* - Report the nature of the interrupt on the ESA analyzer */

/* - Clear the status register enable		*/
/*	*SRE 0	*/
/* - Clear the status byte of the ESA		*/
/*	*CLS	*/
/* - Close the session		*/

/************************************************************/

#include <stdio.h> #include <stdlib.h> #include <math.h> #include <conio.h> #include <ctype.h> #include <string.h> #include <windows.h> #include "visa.h"

#define hpESA_IDN_E4401B "Hewlett-Packard, E4401B" #define hpESA_IDN_E4411B "Hewlett-Packard, E4411B" #define hpEMC_IDN_E7401A "Hewlett-Packard, E7401A" #define YIELD Sleep(10)

ViSession defaultRM, viESA;

ViStatus errStatus;

ViChar		cIdBuff[256] = {0};
ViAddr		iAddress;
char	cEnter =0;
int		iResult =0;
int		iSrqOccurred=0;
char	cBuf[3]={0};

/*Wait until SRQ is generated and for the handler to be called. Print

something while waiting. When interrupt occurs it will be handled by interrupt handler*/

void WaitForSRQ()

{

long lCount = 0L;

iSrqOccurred =0;

150 Chapter 3