[USRP-users] USRP X310 GPS or IEEE 1588 Synchronization

Nate Temple nate.temple at ettus.com
Wed Feb 27 11:44:28 EST 2019


Hi Akin,

The Octoclock-G would be suitable for this purpose, and yes, it does
contain a GPSDO (OCXO). https://kb.ettus.com/GPSDO#GPSDO_.28OCXO.29

The Octoclock-G does not contain an antenna, you must provide one to the
GPS Antenna input (SMA).

The X3xx series do not support IEEE 1588, however, the N3xx series USRPs do
support White Rabbit, which is an extension of the IEEE-1588-2008 standard.
More info can be found here on it
https://kb.ettus.com/Using_Ethernet-Based_Synchronization_on_the_USRP%E2%84%A2_N3xx_Devices


Regards,
Nate Temple

On Wed, Feb 27, 2019 at 8:31 AM akin soysal via USRP-users <
usrp-users at lists.ettus.com> wrote:

> Hello All,
>
>
> I have a question. We want to synchronize the clock of the two USRP X310s
> with a GPS or IEEE 1588 standard. I would like to synchronize the two USRPs
> with each other so that the base station and user terminal would not
> experience any synchronization issue. I also would like to synchronize one
> of the USRP X310s with an external base station, which supports IEEE 1588
> and GPS clocks, and we have a synchronization budget of about *250us*.
>
>
> I learned that the setup that worked in France is using the following
> Ettus product:
>
>
> https://www.ettus.com/product/details/OctoClock-G
>
>
> Do you think that this would suffice for our needs? It has its own GPS
> clock and antenna inside, right? It is compatible with USRP X310?
>
>
> I know that the product specification does not include IEEE 1588, so I am
> concluding that it would not be possible to use this standard for our
> scenario, do you agree?
>
> Thanks and regards,
>
> Akın
> _______________________________________________
> 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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