Agilent Technologies E2094S Uživatelská příručka stáhnout pdf (Strana 45)

Programming with VISA 3

Agilent VISA User’s Guide 45

/*nonfmtio.c

This example program measures the AC voltage on

a multimeter and prints the results. You may

need to change the device address. */

#include <visa.h>

#include <stdio.h>

void main () {

ViSession defaultRM, vi;

char strres [20];

unsigned long actual;

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

viOpenDefaultRM(&defaultRM);

viOpen(defaultRM, "GPIB0::22::INSTR",

VI_NULL,VI_NULL, &vi);

/* Initialize device */

viWrite(vi, (ViBuf)"*RST\n", 5, &actual);

/* Set up device and take measurement */

viWrite(vi, (ViBuf)"CALC:DBM:REF 50\n", 16,

&actual);

viWrite(vi, (ViBuf)"MEAS:VOLT:AC? 1, 0.001\n",

23, &actual);

/* Read results */

viRead(vi, (ViBuf)strres, 20, &actual);

/* NULL terminate the string */

strres[actual]=0;

/* Print results */

printf("Measurement Results: %s\n", strres);

/* Close session */

viClose(vi);

viClose(defaultRM);

}

1 2 ... 40 41 42 43 44 45 46 47 48 49 50 ... 145 146

Žádné komentáře

Agilent Technologies E2094S Uživatelská příručka Strana 45