Dear all,
Has the LO sharing API changed in UHD 4.1? I have used the following
code in UHD 4.0 to share LOs on a USRP X310 with 2 TwinRX installed, and
it worked (all 4 channels were in sync, i.e. more or less consistent
phase offset). Now if I switch to UHD 4.1, channels 0 and 1 keep
drifting away from channels 2 and 3. It seems like the RF A and RF B
frontends are not in sync, but the 2 channels within them are in sync.
// based on https://github.com/EttusResearch/uhd/issues/237
usrp->set_rx_lo_export_enabled(true,uhd::usrp::multi_usrp::ALL_LOS,0);
usrp->set_rx_lo_source("companion",uhd::usrp::multi_usrp::ALL_LOS,1);
usrp->set_rx_lo_source("external",uhd::usrp::multi_usrp::ALL_LOS,2);
usrp->set_rx_lo_source("external",uhd::usrp::multi_usrp::ALL_LOS,3);
Thanks,
Viktor
On 7/1/21 11:33 PM, Aaron Rossetto wrote:
Hello USRP community,
On behalf on everyone at NI/Ettus Research, I am very proud to
announce the release of UHD 4.1, the latest version of the USRP
Hardware Driver! As my colleague Haydn Nelson posted to the list
earlier in the week, UHD 4.1 offers support for the newest member of
the USRP family, the NI Ettus USRP X410. This new generation of USRP
provides the highest performance of any USRP to date, sporting 4x4
TX/RX channels, 400 MHz instantaneous bandwidth per channel, and a
tunable range from 1 MHz to 7.2 GHz, to name just a few of its
best-in-class features. Check out the Ettus Research website[1] to
learn more about the X410. Beyond support for the X410, however, UHD
4.1 also provides numerous bug fixes and stability improvements
benefitting the entire stable of USRP devices. See the changelog
associated with the v4.1.0.0 tag[2] for a more comprehensive list of
changes.
While we strive to ensure the highest quality of UHD releases, it is
possible that some gremlins may have found their way into the process.
We appreciate your patience and understanding as we shake out any
remaining bugs. If you encounter problems, please let us know by
filing a issue against UHD on the GitHub repo[3] or by posting to the
USRP-users mailing list so that we can get it resolved.
Finally, we hope to see you in person or virtually at GNU Radio
Conference 2021[4], taking place 20-24 September 2021.
With best regards,
Aaron Rossetto
[1]
https://www.ettus.com/introducing-the-most-advanced-sdr-the-ni-ettus-usrp-x410/
<https://www.ettus.com/introducing-the-most-advanced-sdr-the-ni-ettus-usrp-x410/>
[2] https://github.com/EttusResearch/uhd/releases/tag/v4.1.0.0
<https://github.com/EttusResearch/uhd/releases/tag/v4.1.0.0>
[3] https://github.com/EttusResearch/uhd/issues/
<https://github.com/EttusResearch/uhd/issues/>
[4] https://events.gnuradio.org/event/8/
<https://events.gnuradio.org/event/8/>
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