84 Agilent N518xA, E8663B, E44x8C, and E82x7D Signal Generators Programming Guide
Programming Examples
GPIB Programming Interface Examples
{
ViSession defaultRM, vi;// Declares variables of type ViSession
// vi establishes instrument communication
ViStatus viStatus = 0;// Declares a variable of type ViStatus
// for GPIB verifications
viStatus=viOpenDefaultRM(&defaultRM); // Initialize VISA session
// Open session to GPIB device at address 19
viStatus=viOpen(defaultRM, "GPIB::19::INSTR", VI_NULL, VI_NULL, &vi);
if(viStatus){// If problems, then prompt user
printf("Could not open ViSession!\n");
printf("Check instruments and connections\n");
printf("\n");
exit(0);}
viClear(vi); // Clears the signal generator
viPrintf(vi, "*RST\n"); // Resets the signal generator
viPrintf(vi, "*CLS\n"); // Clears the status byte register
viPrintf(vi, "FREQ:MODE LIST\n"); // Sets the sig gen freq mode to list
viPrintf(vi, "LIST:TYPE STEP\n"); // Sets sig gen LIST type to step
viPrintf(vi, "FREQ:STAR 500 MHz\n"); // Sets start frequency
viPrintf(vi, "FREQ:STOP 800 MHz\n"); // Sets stop frequency
viPrintf(vi, "SWE:POIN 10\n"); // Sets number of steps (30 mHz/step)
viPrintf(vi, "SWE:DWEL .5 S\n"); // Sets dwell time to 500 ms/step
viPrintf(vi, "POW:AMPL -5 dBm\n"); // Sets the power level for -5 dBm
viPrintf(vi, "OUTP:STAT ON\n"); // Turns RF output on
viPrintf(vi, "INIT:CONT ON\n"); // Begins the step sweep operation
// Print user information
printf("The signal generator is in step sweep mode. The frequency range is\n");
printf("500 to 800 mHz. There is a .5 sec dwell time at each 30 mHz step.\n");
printf("\n"); // Prints a carriage return/line feed
viPrintf(vi, "OUTP:STAT OFF\n"); // Turns the RF output off
printf("Press the front panel Local key to return the\n");
printf("signal generator to manual operation.\n");
// Closes the sessions
printf("\n");
viClose(vi);
viClose(defaultRM);
}
Generating a Swept Signal Using VISA and Visual C++
This example sets up the signal generator for a frequency sweep from 1 to 2 GHz with 101 points
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