Keysight CXG, EXG, and MXG X-Series Signal Generators Programming Guide 93
Programming Examples
GPIB Programming Interface Examples
viPrintf(vi, "FM:EXT2:COUP AC\n"); // Sets FM path 2 coupling
to AC
viPrintf(vi, "FM:DEV 20 kHz\n"); // Sets FM path 2 deviation
to 20 kHz
viPrintf(vi, "FREQ 700 MHz\n"); // Sets carrier frequency to
700 MHz
viPrintf(vi, "POW:AMPL -2.5 dBm\n"); // Sets the power level to
-2.5 dBm
viPrintf(vi, "FM:STAT ON\n"); // Turns on frequency
modulation
viPrintf(vi, "OUTP:STAT ON\n"); // Turns on RF output
// Print user information
printf("Power level : -2.5 dBm\n");
printf("FM state : on\n");
printf("RF output : on\n");
printf("Carrier Frequency : 700 MHZ\n");
printf("Deviation : 20 kHZ\n");
printf("EXT2 and AC coupling are selected\n");
printf("\n"); // Prints a carrage return
// Close the sessions
viClose(vi);
viClose(defaultRM);
}
Generating an Internal FM Signal Using VISA and C
In this example the VISA library is used to generate an internal FM signal at a
carrier frequency of 900 MHz and a power level of −15 dBm. The FM rate will
be 5 kHz and the peak deviation will be 100 kHz. Launch Microsoft Visual C++
6.0, add the required files, and enter the following code into your .cpp source
file. visaex6.cpp performs the following functions:
—error checking
— resets the signal generator
— sets up the signal generator for FM path 2 and internal FM rate of 5 kHz
— sets up FM path 2 deviation to 100 kHz
— sets carrier frequency to 900 MHz
— sets the power level to -15 dBm
— turns on frequency modulation and RF output
The following program example is available on the signal generator
Documentation CD-ROM as visaex6.cpp.
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