Hello Alice, A single 10 GigE connection should be able to carry two channels of 100 MS/s. Here is a link to some advice for tuning the Ethernet performance of your computer. http://files.ettus.com/manual/page_transport.html
Your current program has no use of timed commands so the phase offset will be random for each tune. Here is the manual page on synchronization. You will need to add the commands to your program. http://files.ettus.com/manual/page_sync.html Regards, Derek On Fri, Jun 15, 2018 at 12:33 PM, Alice Lo Valvo <alice.lova...@unipa.it> wrote: > Hi Derek, > > thank you for your answer. My answers are below. > > Il 15/06/18 13:08, Derek Kozel ha scritto: > > Hello Alice, > > I think you have two different issues. You should not be encountering Late > errors. How do you schedule your timed commands? What connection to the > host computer are you using? 10 GigE should be able to handle 100 MS/s, are > you using 1 GigE? > > I attached the python file that I created. I use 10GigE, but the channel > bandwidth for each channel is 100MHz.. should't it be a problem? > > Separately, there will always be a phase offset between channels, even > when using timed commands. Which daughterboards are you using? The > requirements to achieve a repeatable phase offsets are different between > boards. > > I'm using SBX 120... > > Regards, > Alice > > > Regards, > Derek > > On Fri, Jun 15, 2018 at 11:13 AM, Alice Lo Valvo via USRP-users < > usrp-users@lists.ettus.com> wrote: > >> Hi all, >> I have to transmit two flows with the same "start trigger". >> I used one USRP X300 with two channels, but because of the large >> bandwidth (100MHz), there is the LLLLL error. >> So, I tried to use two USRPs X300 with the OctoClock, but when I record >> the transmitted signal they are not synchronize.. One signal starts before >> the other one.. there is a costant offset phase, I think. >> Any suggestion? >> >> Thank you in advance, >> >> Alice >> >> >> _______________________________________________ >> USRP-users mailing list >> USRP-users@lists.ettus.com >> http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com >> > > >
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