Agilent Technologies FS2010 Guide de l'utilisateur télécharger pdf (Page 92)

92 Agilent VISA User’s Guide

3 Programming with VISA

/* Make sure no other process or thread does

anything to this resource between the

viPrintf() and the viScanf()calls Note: this

also locks out the processes with which we

shared our 'shared lock' key. */

viLock (vi, VI_EXCLUSIVE_LOCK, 2000,

VI_NULL,VI_NULL);

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

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

/* Read results */

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

/* unlock this session so other processes and

threads can use it */

viUnlock (vi);

/* Print results */

printf ("Instrument identification string:

%s\n", buf);

/* release the shared lock also*/

viUnlock (vi);

/* Close session */

viClose (vi);

viClose (defaultRM);

}

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Agilent Technologies FS2010 Guide de l'utilisateur Page 92