While the FSCAN mode is used to scan a signal in the RF range, the FFT (Fast Fourier Transformation) is used to scan in the baseband range. This is useful if you want to display the different components of a signal (see example) or analyse a signal supplied at the external baseband input.
The choice of the FFT window will determine frequency resolution, shape factor and sidelobe suppression.
Flat Top Window |
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Hann Window |
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No Window |
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