Agilent Technologies ESA-E Series Programmer's Manual page 118

Programming Examples
Status Register-Determine When a Measurement is Don e
/* *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 YIELD Sleep(10 )
ViSession defaultRM, viESA ;
ViStatus errStatus ;
ViChar cIdBuff[256] = {0} ;
char cEnter =0 ;
int iResult =0 ;
int iSrgOccurred=0 ;
char cBuf[3]={O} ;
/*Wait until SRQ is generated and for the handler to be called . Print
something while waiting . When interrupt occurs it will be handled b y
interrupt handler* /
void WaitForSRQ( )
{
long lCount = OL ;
iSrqOccurred =0 ;
printf ("\t\nWaiting for an SRQ to be generated . . .") ;
for (lCount =0 ;(lCount<l0) && (iSrqOccurred
=0) ; lCount++ )
{
long lCount2 =0 ;
printf(" .") ;
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