[time-nuts] another Ebay mixup, 5370
Dr Bruce Griffiths
bruce.griffiths at xtra.co.nz
Sun Jun 10 22:07:03 EDT 2007
SAIDJACK at aol.com wrote
> Hi Didier,
> looking at the 10MHz input schematics, there is probably an opportunity to
> make these 5370B units a lot better. Even the 50MHz and 200MHz multiplier
> boards could be done a lot better nowadays, say with Crystal based VCXO's.
> I always like opportunities like this that give better performance in an
> evening or two worth of experimenting.
A well designed frequency multiplier has a lower equivalent phase noise
than any digital divider so the phase noise of a VCXO locked to a 10MHz
reference via a digital divider and a phase locked loop will be worse
than when a well designed frequency multiplier is employed.
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