Carlos, You're correct that currently we can't currently use a TwinRX and a UBX in the same chassis without running into sample rate / tick rate conflicts. I would guess that this would extend to a chassis with UBX boards and a chassis with TwinRX boards if they're encapsulated in the same multi-usrp object AND streamer. I haven't tried it myself, but I have a feeling that you might be able to run things correctly if you split each X310 out into its own streamer (benchmark rate uses a single streamer).
-Sam On Tue, Oct 22, 2019 at 9:33 AM Carlos Bocanegra via USRP-users < [email protected]> wrote: > Hi all, > > Can we have daughterboards TwinRX and UBX working under the same multiUSRP > object? For instance, two TwinRX attached to one USRP and two UBX attached > to another USRP creating 6 synchronized and phased aligned receiver > channels? > > The discussion below stated that the sampling rate mismatch (100Msps for > the TwinRX and 200Msps for the UBX) do not allow for simultaneous operation > under the same USRP. But what about different USRPs? > https://lists.gnu.org/archive/html/discuss-gnuradio/2017-07/msg00021.html > > If I try running the benchmark_rate having two TwinRX on the address 70.2 > and two UBX on the 60.2 like: > *>> sudo /usr/local/lib/uhd/examples/benchmark_rate --args > "addr0=192.168.70.2,addr1=192.168.60.2" --rx_channels 0,1,2,3 --rx_subdev > "A:0 B:0" --rx_rate 1e6 --ref external --pps external* > I get the error: > *RuntimeError: Conflicting tick rates: One neighbouring block specifies > 2e+08 MHz, another 1e+08 MHz.* > > I also tried changing the master clock rate to see if we can match them, > but then I get that the X310 can't change their master clock rate at > runtime, even when I set these parameters as "stream_args" when I create > the usrp_source object. > > Thanks, > Carlos > > _______________________________________________ > USRP-users mailing list > [email protected] > http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com >
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