Bret Ludwig wrote:

Arny Krueger wrote:

An experienced eye ( such as mine ) can interpret the waveform rather
well.

This is bull**** incidentally. Oscilloscopy is not the tool to track
down non-gross distortions, at least not directly.

You incorrectly attributed that comment.

It was mine ! And I stand by it ! Very much so in fact.

Examination of the distortion analyser output waveform shape is highly valuable
with regard to getting a feel for the harmonic content and indeed any specific
linearity issues. Crossover artefacts are very obvious too. You simply 'get an
eye' for it.

You *could* use a spectrum analyser to get the numbers but a waveform on a scope
take some beating for instant 'readability'.

I guess 25+ yrs of doing this for real as a design professional gives me the
advantage over the casual newsgroup junkie !

Graham