HM2008: FFT (ID #628) The FFT function of an oscilloscope is
transformed from the time domain into the frequency domain.
Basically, you can see, starting from the algorithm, the half of
the sampling rate as the highest frequency. If 100MSa/s is
scanned, you can see 50MHz as the maximum frequency in the FFT.
The fineness of the resolution is depending on the set time base
(the larger the time base, the finer the resolution) and
depending on the number of points to be included in the FFT
calculation. The HM2008 use max. 8192 points for the
calculation.