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

Programming Examples

GPIB Programming Interface Examples

• turns signal generator RF state off

• verifies RF state off

The following program example is available on the signal generator Documentation CD- ROM as

visaex4.cpp.

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

// PROGRAM FILE NAME: visaex4.cpp

// PROGRAM DESCRIPTION: This example demonstrates query commands. The signal generator

// frequency and power level.

// The RF state of the signal generator is turn on and then the state is queried. The

// response will indicate that the RF state is on. The RF state is then turned off and

// queried. The response should indicate that the RF state is off. The query results are

// printed to the to the display window.

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

#include "StdAfx.h"

#include <visa.h>

#include <iostream>

#include <stdlib.h>

#include <conio.h>

void 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 [256]; // Declare variable to hold string data

int num; // Declare variable to hold integer data

viStatus=viOpenDefaultRM(&defaultRM); // Initialize VISA system

// 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("Could not open ViSession!\n");

printf("Check instruments and connections\n");

printf("\n");

exit(0);}

viPrintf(vi, "*RST\n"); // Reset the signal generator

viPrintf(vi, "FREQ 500 kHz\n"); // Set the source CW frequency for 500 kHz

Agilent Technologies E8257D User Manual

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