46 Chapter 2
Programming Examples
GPIB Programming Examples
viPrintf(vi, "OUTP:STAT ON\n"); // Turn source RF state on
viPrintf(vi, "OUTP?\n"); // Query the signal generator's RF state
viScanf(vi, "%1i", &num); // Read the response (integer value)
// Print the on/off RF state
if (num > 0 ) {
printf("Source RF state is : on\n");
}else{
printf("Source RF state is : off\n");
}
printf("\n");
printf("Verify RF state then press continue\n");
printf("\n");
getch();
viClear(vi);
viPrintf(vi,"OUTP:STAT OFF\n"); // Turn source RF state off
viPrintf(vi, "OUTP?\n"); // Query the signal generator's RF state
viScanf(vi, "%1i", &num); // Read the response
// Print the on/off RF state
if (num > 0 ) {
printf("Source RF state is now: on\n");
}else{
printf("Source RF state is now: off\n");
}
// Close the sessions
printf("\n");
viClear(vi);
viClose(vi);
viClose(defaultRM);
}
Generating an Externally Applied AC-Coupled FM Signal Using VISA and C
In this example, the VISA library is used to generate an ac-coupled FM signal at a carrier frequency of
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