Agilent Technologies N5181A/82A, N5183A Programming Examples Gpib Programming Interface Examples

Programming Examples

GPIB Programming Interface Examples

viPrintf(vi, "FREQ:CW?\n");	// Query the		CW frequency
viScanf(vi, "%t", rdBuffer);	// Read	signal generator response
printf("Source CW frequency is : %s\n",		rdBuffer); // Print the frequency
viPrintf(vi, "POW:AMPL -2.3 dBm\n"); // Set			the power level to -2.3 dBm
viPrintf(vi, "POW:AMPL?\n");	// Query the		power level
viScanf(vi, "%t", rdBuffer);	// Read	the response into rdBuffer
printf("Source power (dBm) is :	%s\n", rdBuffer); // Print the power level
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 700 MHz, a power level of −2.5 dBm, and a deviation of 20 kHz. Before running the program:

•Connect the output of a modulating signal source to the signal generator’s EXT 2 input connector.

•Set the modulation signal source for the desired FM characteristics.

Agilent N518xA, E8663B, E44x8C, and E82x7D Signal Generators Programming Guide 79