[time-nuts] Spread Spectrum Spam!

Magnus Danielson magnus at rubidium.dyndns.org
Fri Nov 27 23:53:57 UTC 2009


Alan Melia wrote:
> Some synth sig-gens use the reference divided down to drive the PSU (Marconi
> 2955 for instance) for the same reason I think

Some Rubidiums lock their pump frequency to the OCXO. This can cause 
harmonics on the output. I once saw it on a rubidium, the jitter was 
unexpectedly high for compared to what the phasenoise plot would make 
you expect, but when scoping the signal it was clearly seen.

Cheers,
Magnus



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