[sdiy] oscillator jitter / phase noise

René Schmitz uzs159 at uni-bonn.de
Fri Jun 4 20:29:13 CEST 2004


Hej Magnus et al.,

> That would be to over-interprent what I was saying. What I mean to say is that
> it is much harder to retrieve the phase modulation waveform when digitized.
> It is still encoded in the sampled waveform, but in a form which is harder to
> retrieve than having the raw waveform into a dedicated instrument.

What about waveforms that are generated digitally? By what you're saying 
they would inherently have that difficulty. You would need to find a way 
to process them, since one of the implicit questions is "why are 
digitally generated waveforms 'cold'".

> The phase modulation is distributed throughout the full cycle, but a high
> resolution measurement is not possible by simple means as we can do when we
> have intact through-zero slopes.

Exactly.

Cheers,
  René

-- 
uzs159 at uni-bonn.de
http://www.uni-bonn.de/~uzs159




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