[USRP-users] GPSDO and USRP Clock

Nick Foster nick at ettus.com
Mon Feb 11 19:06:13 EST 2013

On 02/11/2013 03:51 PM, Perelman Nathan (Nathan) wrote:
> How accurate is the USRP clock once it has been synced to the GPSDO? 
> Is there a need to periodically re-sync it? While the 10 MHz clock on 
> the GPSDO is warming up is it causing the clock to drift away from GPS 
> time?

When the GPSDO clock is selected as the reference source, the USRP main 
oscillator is phase-locked to the GPSDO 10MHz reference. There is no 
drift and no necessity to resynchronize while the USRP is operating.

> Thanks.
> -Nathan Perelman
> _______________________________________________
> USRP-users mailing list
> USRP-users at lists.ettus.com
> http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com

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