Hi Vladica - What Rob wrote is correct, and something I've come across in my WR testing during June: N320/N321 support was added in UHD 3.14, and thus actual WR functionality has been broken there since release for those USRPs; testing was done to verify that the WR core on the FPGA was functional, but the testing did not extend to streaming. We are in the process of determining the issue(s) on UHD 3.14 to current, and hope to have a fix in the internal review pipeline by the end of July 2021. Apologies if my messages ended up being confusing; I'm learning about much of what I write as I dig into it! - MLD
On Mon, Jul 12, 2021 at 11:47 AM Rob Kossler <rkoss...@nd.edu> wrote: > Hi Vladica, > From the 'changelog', it appears that N321 support began with release > 3.14. But, at that point I believe that WR was already broken. So, I > think that there is no solution to your problem other than to wait for > Ettus to fix the WR issues. However, WR has been broken for a while (note > user-list posts from last fall Sept & Dec) so I don't know when this will > be working again. > Rob > > > On Wed, Jul 7, 2021 at 10:26 AM Vladica Sark <vladicas...@gmail.com> > wrote: > >> Hi Michael, >> >> I obtained the necessary SFP+ optical adapters and now I am trying to >> put uhd 3.13.1.0 on the N321s in order to use the WR synchronization. >> Unfortunately, when I update the sd card image with 3.13.1.0 the N321 >> boots but the SFP0 and SFP1 do not go up. When I try to run >> uhd_find_devices, on a terminal using the USB port it says no UHD >> devices are found. >> >> I believe that the right FPGA image should be put on the FPGA, but the >> ways described in Knowledgebase are not working. >> >> Is there a way to put the version 3.13.1.0 on the N321? I have tried >> version 4.0.0.0 and it is working fine, but WR is broken. >> >> BR, >> Vladica >> >> >> On 22.06.21 21:31, Michael Dickens wrote: >> > I'm using primarily FS adapters, cables (single and multi mode), and >> > fiber connectors (to allow multiplexing lanes). The adapters I bought >> > were "generic" and had to be tweaked using an FS BOX to be fully >> > compatible with Intel or Mellanox NICs. This tweaking seems to have >> > helped a lot with the 100 Gb interface (E810); the 10 Gb interfaces do >> > not show much benefit to be manufacturer specific -- though I'm sure >> > it doesn't hurt! I have not tried a multi-mode to single mode splitter >> > / joiner, but I'd suppose they do exist & if anybody here has had >> > experience that would be useful to hear about! I hope this is useful! >> > - MLD >> > >> > >> > On Tue, Jun 22, 2021 at 10:05 AM Vladica Sark <vladicas...@gmail.com >> > <mailto:vladicas...@gmail.com>> wrote: >> > >> > Hi Michael, >> > >> > Thanks for the answer. For now for the data I am using DAC cables, >> > but >> > we would need larger distances, i.e. 50+ meters, and for this I >> would >> > need fibers for both WR and data. >> > >> > Is there also some optical multiplexer for these wavelengths, in >> > order >> > to use a simplex fiber, for both WR and data? >> > >> > BR, >> > Vladica >> > >> > On 22.06.21 15:41, Michael Dickens wrote: >> > > Hi Vladica - I've tested a variety of fiber adapters and cables >> > with >> > > no issues (e.g., ZyXEL, FS, Axcen). The primary keys are to make >> > sure >> > > the various related parameters match up between the adapters and >> > > cables and devices. For example: If the adapter is 1490/1310, >> > then you >> > > want to make sure the cable is for the same wavelengths. Same >> > for the >> > > fiber polish and other parameters (single / dual fiber ; . Some >> are >> > > easier than others, none of this is too difficult luckily! >> > > >> > > For short distances, a DAC cable will work for all of the >> N320/N321 >> > > SFP interfaces. >> > > >> > > At the moment, WR support is being fixed for UHD 3.14.0.0 to >> > current. >> > > If you -require- WR support -right now- you can use UHD 3.13.1.0 >> > while >> > > we're working out how to fix WR for newer UHD. We expect the fix >> > to be >> > > available to customers sometime in mid/late-July (2021); once >> > the fix >> > > is determined and verified we will commit it to the various >> > branches >> > > of the UHD repository, and it will be available in UHD -after- the >> > > forthcoming 4.1 release. It will be available in the public UHD >> > > repository for folks to use to patch UHD between releases. >> > > >> > > I hope this is useful! - MLD >> > > >> > > >> > > On Tue, Jun 22, 2021 at 6:19 AM Vladica Sark >> > <vladicas...@gmail.com <mailto:vladicas...@gmail.com> >> > > <mailto:vladicas...@gmail.com <mailto:vladicas...@gmail.com>>> >> > wrote: >> > > >> > > Dear all, >> > > >> > > I would like to use N321 with WRS 3/18 which uses optical >> > cables. I >> > > would like to use also for the 10 Gbit SFP1 optical SFP+ >> > transceiver. >> > > Do you have some recommended optical SFP+ adapters, duplex >> and, >> > > preferably, simplex? >> > > The idea is to use a duplex monomode fiber, one fiber for >> > the 10 Gbit >> > > data and one fiber for WRS synchronization. >> > > They would be connected to 10 Gbit switch or QNAP >> > Thunderbolt to SFP+ >> > > adapter, so they do not have to be Intel. >> > > >> > > >> > > Best regards, >> > > >> > > Vladica >> > > >> > > _______________________________________________ >> > > USRP-users mailing list -- usrp-users@lists.ettus.com >> > <mailto:usrp-users@lists.ettus.com> >> > > <mailto:usrp-users@lists.ettus.com >> > <mailto:usrp-users@lists.ettus.com>> >> > > To unsubscribe send an email to >> > usrp-users-le...@lists.ettus.com >> > <mailto:usrp-users-le...@lists.ettus.com> >> > > <mailto:usrp-users-le...@lists.ettus.com >> > <mailto:usrp-users-le...@lists.ettus.com>> >> > > >> > >> _______________________________________________ >> USRP-users mailing list -- usrp-users@lists.ettus.com >> To unsubscribe send an email to usrp-users-le...@lists.ettus.com >> >
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