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Resolution bandwidth and number of data points

Question asked by jeff_philips001 on Oct 12, 2015
Latest reply on Oct 14, 2015 by simon_coleby
I'm confused.  Using an E4407B spectrum analyzer, I'm sweeping from DC (9kHz?) to 8GHz.  I've lowered the resolution bandwidth to 3kHz.  8GHz divided by 3kHz is 2,667,667.  If I wish to resolve the DC-8GHz spectrum in 3kHz increments, don't I need 2,667,667 data points?  The CSV file I exported from the spectrum analyzer contains only 401 data points.  Does this mean I missed several of the spurious signals I'm looking for?  What am I doing wrong here?

Thanks, Jeff