Hi Marcus, Thanks a lot! What GPSDO do you recommend? We need to buy one.
Best regards, Alejandro 2018-04-06 16:00 GMT+02:00 Marcus D. Leech <mle...@ripnet.com>: > On 04/06/2018 08:29 AM, ALEJANDRO BLANCO PIZARRO wrote: > > Hi all, Marcus, > > Thanks for the answer, it was really useful. Now, I am trying to generate > the 10Mhz signal using a vector signal generator, but the signal is nor > really pure because the signal generator bandwidth is only 60MHz. Also, the > Vpp of the signal is 1.4 V, is it correct? > > If someone can see the signal (in attached) and tell me if I can use it as > an external clock, it will be really helpful. > > Best regards, > Alejandro > > What is the stability of your vector signal generator? I suspect that > it's much worse than the on-board clocks. > > You'd do better to use an external GPSDO to feed to your two X310. > > > > 2018-04-05 16:34 GMT+02:00 Marcus D. Leech via USRP-users < > usrp-users@lists.ettus.com>: > >> On 04/05/2018 06:20 AM, ALEJANDRO BLANCO PIZARRO via USRP-users wrote: >> >>> Dear community, >>> >>> I would like to add an external clock to two USRP in order to have the >>> same clock discarding possible synchronization issues. The desirable >>> frequency of the clock would be 184 MHz (compatible with LTE). >>> >>> And I was wondering about what will be the possible solutions: >>> >>> --> It is possible to use a sine signal with a desirable frequency as an >>> external clock? In this case what will the amplitude of the signal be? >>> Unfortunately, I do not have a PWM generator in order to use it as a clock. >>> >>> --> It is possible to use another USRP as an external clock using a >>> transmit basic daughterboard ? >>> >>> Thanks you so much in advance. >>> >>> Best regards, >>> Alejandro >>> >>> X310 supports an external clock already, via the 10MHz front-panel >> input. The master clock (which can be 184.32Mhz, to support LTE) is then >> derived >> from that. Just feed a 10Mhz clock to all your X310s. >> >> See: >> >> https://kb.ettus.com/Synchronization_and_MIMO_Capability_wit >> h_USRP_Devices >> >> >> >> _______________________________________________ >> USRP-users mailing list >> USRP-users@lists.ettus.com >> http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com >> > > >
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