50 Chapter 2
Programming Examples
GPIB Programming Examples
printf("Could not open ViSession!\n");
printf("Check instruments and connections\n");
printf("\n");
exit(0);}
printf("Example program to set up the signal generator\n");
printf("for an AC-coupled FM signal\n");
printf("\n");
printf("Press any key to continue\n");
getch();
viClear(vi); // Clears the signal generator
viPrintf(vi, "*RST\n"); // Resets the signal generator
viPrintf(vi, "FM2:INT:FREQ 5 kHz\n"); // Sets EXT 2 source for FM
viPrintf(vi, "FM2:DEV 100 kHz\n"); // Sets FM path 2 coupling to AC
viPrintf(vi, "FREQ 900 MHz\n"); // Sets carrier frequency to 700 MHz
viPrintf(vi, "POW -15 dBm\n"); // Sets the power level to -2.3 dBm
viPrintf(vi, "FM2:STAT ON\n"); // Turns on frequency modulation
viPrintf(vi, "OUTP:STAT ON\n"); // Turns on RF output
printf("\n"); // Prints a carriage return
// Print user information
printf("Power level : -15 dBm\n");
printf("FM state : on\n");
printf("RF output : on\n");
printf("Carrier Frequency : 900 MHZ\n");
printf("Deviation : 100 kHZ\n");
printf("Internal modulation : 5 kHz\n");
printf("\n"); // Print a carrage return
// Close the sessions
viClose(vi);
viClose(defaultRM);
}
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