[time-nuts] Phase noise and jitter

[John Miles]

> A high-quality crystal oscillator's broadband floor will be
> sufficiently quiet (typically better than -160 dBc/Hz) that it won't
> matter
> much whether
> you integrate out to 100 kHz or to 1 MHz.  The difference will be on
> the order of attoseconds.

Sorry, should have said "femtoseconds" here.  Going from 10 Hz-100 kHz to 10
Hz-1 MHz with one OCXO plot I have contributes 1E-15 more jitter.  The idea
still applies, though -- just keep moving the upper limit higher until the
difference doesn't matter in your application.  With a high-qualty source
you will not usually need to extrapolate beyond the boundaries of the plot.

-- john, KE5FX