Yes they’ll use the same reference clock provided by the motherboard. There’ll be a residual phase offset which can be mitigated using timed tuning.
Sent from my iPhone > On Jan 9, 2019, at 3:01 PM, Yang Liu via USRP-users > <usrp-users@lists.ettus.com> wrote: > > Dear all, > > I have a usrp x310 with two UBXs installed. And I want to use it as a MIMO > transmitter (two outgoing channels streaming at the same frequency). > > When we need to build a MIMO system by connecting different usrps, I know > that we need to have either MIMO cable or external time and frequency > reference. In the one usrp x310 case, since two daughterboards seems to be > independent, do we need to synchronize them? or they are already synchronized > by default (for example, two local oscillators are synchronized, and will be > tuned to exactly same frequency?)? > > Thanks, > Yang > _______________________________________________ > 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
