52 Chapter 2
Programming Examples
GPIB Programming Examples
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 generoator to manual operation.\n");
// Closes the sessions
printf("\n");
viClose(vi);
viClose(defaultRM);
}
Saving and Recalling States Using VISA and C
In this example, instrument settings are saved in the signal generator’s save register. These settings can then
be recalled separately; either from the keyboard or from the signal generator’s front panel. Launch Microsoft
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