On 02/11/2022 12:09, Scott Burchfield wrote:
Hi,
Are there any updates on this problem. I normally try not to reply to
old threads, but I am seeing the same the same spectral mirroring Rob
described earlier. My setup is also the same as Rob’s.
I have tracked some newer threads that mentioned disabling
TX_QEC_INIT, but I am still seeing the mirroring after disabling QEC.
https://www.mail-archive.com/usrp-users@lists.ettus.com/msg07489.html
Thanks,
Scott
It seems to me that if you use an external LO, that LO has to go through
the phase-splitter on the mixer, and that phase-split
is subject to errors, so turning off QEC may not be that
desirable--although I think the mixer on the N310 (using an AD9371)
is a 2XLO, so the phase error should be very very small.
Do the unwanted sidebands change with LO level?
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