Forum: GNU Radio Re: GPSDO detection in B200

F1885cad1acb7793978438a46ea62cb8?d=identicon&s=25 Robert Light (Guest)
on 2014-06-06 20:52
(Received via mailing list)
Is 1PPS used if I have GPSDO installed or does the B200 assume that
10MHz is already good enough?
558c40b97bd1af8d912424757714bda9?d=identicon&s=25 Marcus D. Leech (Guest)
on 2014-06-06 21:03
(Received via mailing list)
On 06/06/2014 02:51 PM, Robert Light wrote:
> Is 1PPS used if I have GPSDO installed or does the B200 assume that 10MHz is
already good enough?
>
> _______________________________________________
> Discuss-gnuradio mailing list
> Discuss-gnuradio@gnu.org
> https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
>
In all the USRPs that have 10MHz and 1PPS, the 1PPS is used only for TOD
synchronization, for operations like: set_time_next_pps().
   There is no internal PLL that is phase-locking to 1PPS--the
assumption is that the 1PPS is locked to 10MHz already, and it's just
used
   as a trigger for TOD (time-of-day) setting operations.



--
Marcus Leech
Principal Investigator
Shirleys Bay Radio Astronomy Consortium
http://www.sbrac.org
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