[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.

--n
>
> Thanks.
>
> -Nathan Perelman
>
>
>
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