Re: [USRP-users] USRP X310 GPS or IEEE 1588 Synchronization
Hello, I know that the 10GbE ethernet interface is adding an extra 500us round trip time delay with fiber DAC. I tested it myself. 1 GbE would probably give a similar delay as well. So do you think it would stay below our delay budget of 250us? Regards, Akın On Fri, 1 Mar 2019 00:24 Nate Temple Hi Rob, > > Yes, that's correct, you can use the WR-LEN with the X310. > > Regards, > Nate Temple > > > > > > > On Wed, Feb 27, 2019 at 12:40 PM Rob Kossler wrote: > >> Nate, >> Although the X3xx series to not natively support White Rabbit, I believe >> that they can get all of the benefits by using a WR-LEN in close proximity >> to the X310. Is that correct? >> >> Rob >> >> On Wed, Feb 27, 2019 at 11:45 AM Nate Temple via USRP-users < >> usrp-users@lists.ettus.com> wrote: >> >>> 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@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@lists.ettus.com http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com >>> ___ >>> USRP-users mailing list >>> USRP-users@lists.ettus.com >>> http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com >>> >> ___ USRP-users mailing list USRP-users@lists.ettus.com http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com
Re: [USRP-users] USRP X310 GPS or IEEE 1588 Synchronization
Hi Rob, Yes, that's correct, you can use the WR-LEN with the X310. Regards, Nate Temple On Wed, Feb 27, 2019 at 12:40 PM Rob Kossler wrote: > Nate, > Although the X3xx series to not natively support White Rabbit, I believe > that they can get all of the benefits by using a WR-LEN in close proximity > to the X310. Is that correct? > > Rob > > On Wed, Feb 27, 2019 at 11:45 AM Nate Temple via USRP-users < > usrp-users@lists.ettus.com> wrote: > >> 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@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@lists.ettus.com >>> http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com >>> >> ___ >> USRP-users mailing list >> USRP-users@lists.ettus.com >> http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com >> > ___ USRP-users mailing list USRP-users@lists.ettus.com http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com
Re: [USRP-users] USRP X310 GPS or IEEE 1588 Synchronization
Nate, Although the X3xx series to not natively support White Rabbit, I believe that they can get all of the benefits by using a WR-LEN in close proximity to the X310. Is that correct? Rob On Wed, Feb 27, 2019 at 11:45 AM Nate Temple via USRP-users < usrp-users@lists.ettus.com> wrote: > 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@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@lists.ettus.com >> http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com >> > ___ > USRP-users mailing list > USRP-users@lists.ettus.com > http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com > ___ USRP-users mailing list USRP-users@lists.ettus.com http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com
Re: [USRP-users] USRP X310 GPS or IEEE 1588 Synchronization
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@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@lists.ettus.com > http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com > ___ USRP-users mailing list USRP-users@lists.ettus.com http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com
[USRP-users] USRP X310 GPS or IEEE 1588 Synchronization
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@lists.ettus.com http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com
