Agilent Technologies E2094S Guia do Utilizador descarregar pdf (Página 16)

16 Agilent VISA User’s Guide

2 Building a VISA Application in Windows

AGILENT TECHNOLOGIES,54622A,987654312,A.01.50

If the program does not run, see the Event Viewer for a list of run-time

errors.

/*idn.c

This example program queries a GPIB device for

an identification string and prints the

results. Note that you must change the address.

#include <visa.h>

#include <stdio.h>

void main () {

ViSession defaultRM, vi;

char buf [256] = {0};

/* Open session to GPIB device at address 22 */

viOpenDefaultRM(&defaultRM);

viOpen(defaultRM,

"GPIB0::22::INSTR",VI_NULL,VI_NULL,

&vi);

/* Initialize device */

viPrintf(vi, "*RST\n");

/* Send an *IDN? string to the device */

viPrintf(vi, "*IDN?\n");

/* Read results */

viScanf(vi, "%t", buf);

/* Print results */

printf("Instrument identification string:

%s\n", buf);

/* Close session */

viClose(vi);

viClose(defaultRM);}

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