Herb, its a bit different
Hidden measurements are only inserted when step size > RBW/2. Of these measurements the maximum is used per sweep point.
If step size? < RBW/2 the requested points are measured
so if you select 450 points and RBW=600kHz on a 1MHz span there will be 450 measurements done which overlap a lot.
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For more info on the tinySA go to https://tinysa.org/wiki/
