Agilent Technologies N5181A/82A User Manual download pdf (Page 84)

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

Programming Examples

GPIB Programming Interface Examples

• resets the signal generator

• queries the signal generator for various settings

• reads the various settings

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

niex3.cpp.

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

// PROGRAM NAME: niex3.cpp

// PROGRAM DESCRIPTION: This example demonstrates the use of query commands.

// The signal generator can be queried for conditions and instrument states.

// These commands are of the type "*IDN?" where the question mark indicates

// a query.

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

#include "stdafx.h"

#include <iostream>

#include "windows.h"

#include "Decl-32.h"

using namespace std;

int GPIB0= 0; // Board handle

Addr4882_t Address[31]; // Declare a variable of type Addr4882_t

int main()

{

int sig; // Declares variable to hold interface descriptor

int num;

char rdVal[100]; // Declares variable to read instrument responses

sig = ibdev(0, 19, 0, 13, 1, 0); // Open and initialize a device descriptor

ibloc(sig); // Places the signal generator in local mode

ibclr(sig); // Sends Selected Device Clear(SDC) message

ibwrt(sig, "*RST", 4); // Places signal generator in a defined state

ibwrt(sig, ":FREQuency:CW?",14); // Querys the CW frequency

ibrd(sig, rdVal,100); // Reads in the response into rdVal

rdVal[ibcntl] = '\0'; // Null character indicating end of array

cout<<"Source CW frequency is "<<rdVal; // Print frequency of signal generator

cout<<"Press any key to continue"<<endl;

cin.ignore(10000,'\n');

ibwrt(sig, "POW:AMPL?",10); // Querys the signal generator

ibrd(sig, rdVal,100); // Reads the signal generator power level

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Agilent Technologies N5181A/82A User Manual Page 84