56 Chapter 2
Programming Examples
GPIB Programming Examples
code into your .cpp source file.
The following program example is available on the PSG Documentation CD-ROM as visaex9.cpp.
//***************************************************************************************
// PROGRAM NAME:visaex9.cpp
//
// PROGRAM DESCRIPTION:In this example, the data questionable status register is read.
// The data questionable status register is enabled to read an unleveled condition.
// The signal generator is then set up for an unleveled condition and the data
// questionable status register read. The results are then displayed to the user.
// The status questionable register is then setup to monitor a modulation error condition.
// The signal generator is set up for a modulation error condition and the data
// questionable status register is read.
// The results are displayed to the active window.
//
//***************************************************************************************
#include <visa.h>
#include "StdAfx.h"
#include <iostream>
#include <conio.h>
void main ()
{
ViSession defaultRM, vi;// Declares a variables of type ViSession
// for instrument communication
ViStatus viStatus = 0;// Declares a variable of type ViStatus
// for GPIB verifications
int num=0;// Declares a variable for switch statements
char rdBuffer[256]={0}; // Declare a variable for response data
viStatus=viOpenDefaultRM(&defaultRM); // Initialize VISA session
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