Hi Oliver, I don't have any example code to provide (and I don't use gnuradio), but I can address a couple of things: - the first step is to get all four channels recognized (as you indicated); perhaps using subdev spec "A:0 A:1 B:0 B:1" - synchronizing in time is definitely possible. From gnuradio, I thought that it was the default for multi-channel operation. You might have to lookup a set_start_time or similar command. check the uhd gnuradio documentation for usrp source <https://www.gnuradio.org/doc/doxygen/classgr_1_1uhd_1_1usrp__source.html>. - four channels at 100 MS/s is also achievable. To use dual 10Gbe, you need to specify the "second_addr" device arg as indicated here <https://files.ettus.com/manual/page_usrp_x3x0.html#x3x0_hw_10gige>. Rob
On Wed, Mar 10, 2021 at 1:10 PM Oliver Towlson via USRP-users < [email protected]> wrote: > Hi > > > > I am trying to set up an X310 with 2 TwinRX boards such that: > > > > - each RF channel may be tuned to a different GNSS L-band frequency > > - all four RF channels may be synchronised in time > > - data streaming on all four channels at 100 MS/s (we are using dual 10G > Ethernet for this) > > > > I’m pretty much a beginner when it comes to USRPs. I am using GNU radio to > configure the USRP but so far it only recognizes two input channels. We > found the code posted here - > http://ettus.80997.x6.nabble.com/USRP-users-Example-code-for-a-pair-of-TwinRXs-td2673.html > - useful but on closer inspection all four channels were set to the same > frequency and it looks to be doing something different to what we want (it > looks like it was written specifically to synchronise four channels > receiving the same signal so that you can calibrate the internal phase > offset of the USRP) > > > > Does anyone have any example code they might be willing to share, if only > to get us started, to get our desired set-up? > > > > Thanks > > > > Oliver T > > P Please consider the environment before printing this e-mail. > _______________________________________________ > USRP-users mailing list > [email protected] > http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com >
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