Measuring analog signal in narrow BW

[rjratnip]

Hi,

I'm trying to determine how to measure a signal in a narrow bandwidth using the SDK. I have a Discovery 3 device and am wondering which, if any, of the sample py programs demonstrate this. What I basically want to do is set the analyzer to look at a particular frequency and BW and see if there's a signal there, returning the voltage of any signal that might be there. Basically, like setting up the spectrum analyzer at a fixed frequency and span to return dbV. Any guidance is appreciated.

Thanks!

Edited April 28 by rjratnip

[attila]

Hi @rjratnip

See the AnalogIn_FFT.py and AnalogIn_Spectrum.py examples, but you can also perform FFT in other libraries.
For single frequency point it would be more efficient to use Goertzel algorithm.