I've used the signal generator and RTA with distortion panel to assess harmonic distortions of equipment, and really appreciate the frequency analysis down to 2Hz for assessment of certain circuits.
I just noticed that a valid analysis and presentation of harmonic distortion went down to a fundamental frequency of 8Hz for a simple external sine oscillator circuit, but responded with N/A below that frequency, for the max 131072 FFT length. Would that be consistent with the programming of REW and FFT limits when there is no internal generator fundamental frequency to lock to?
I just noticed that a valid analysis and presentation of harmonic distortion went down to a fundamental frequency of 8Hz for a simple external sine oscillator circuit, but responded with N/A below that frequency, for the max 131072 FFT length. Would that be consistent with the programming of REW and FFT limits when there is no internal generator fundamental frequency to lock to?