[time-nuts] Subject: Re: GPS 1PPS, phase lock vs frequency lock, design

Hal Murray hmurray at megapathdsl.net
Mon Jun 24 02:44:16 UTC 2019


tvb at LeapSecond.com said:
> Can you explain more what you use a GPSDO for? For most people a GPSDO  is
> merely a replacement for a stand-alone XO or TCXO or OCXO or even  rubidium.
> As such, the more stable and accurate the frequency the  better. Which is why
> a FLL-based GPSDO, as Leo describes, is a perfectly  fine solution. 

The obvious case where a PLL wins is using it to drive a clock.

Consider using it to drive a picPET watching the PPS from a GPS.


-- 
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