Sure, I understand the comment about the tagged release. And, I don't have
a compelling reason why I can't switch from 3.14 to 3.15. I have not
switched yet only because I'm being cautious and 3.14 has worked well for
me. But, I will plan to switch - at least for now.
Rob
On Mon, Jan 27, 2020 a
Hi Rob,
Thanks for trying your setup with 3.15.0.0.
I will see what I can do about getting these fixes backported to 3.14, any
changes will need to be on the UHD-3.14 branch (the maint branch for 3.14),
we won't be able to apply these changes to 3.14.1.1, as it's a tagged
release.
Regards,
Nate
Nate,
After switching to 3.15, I now get consistent results such that the
relative phase between channels is as follows:
- chan 0 to chan 1: constant
- chan 1 to chan 2: constant +/- 180 deg
- chan 2 to chan 3: constant
So, it seems that the problem was in 3.14.
Rob
On Mon, Jan 27, 2020 at 3:45 P
Nate,
So, I retested with 3.14.1.1 and got erratic results (same as last week).
Now I am attempting to go to 3.15.0.0. To make things as painless as
possible, I tried to just re-build MPM on the device and then update the
other stuff on the host (rather than flashing a new file system). However,
ok.
Yes, I always use timed tune commands. If that were not happening
correctly, I don't think I could get consistent results with TwinRx.
I am presently using 3.14.1.1. I will complete the testing (using internal
LO) I've already begun with this version and then re-test some/all using
3.15. As
Hi Rob,
One other thing, if you're not on UHD v3.15.0.0, I'd recommend to update to
it. There was some phase reset and accumulator fixes with 3.15.0.0.
https://github.com/EttusResearch/uhd/blob/UHD-3.15.LTS/CHANGELOG#L44
Regards,
Nate Temple
On Mon, Jan 27, 2020 at 11:17 AM Nate Temple wrote:
Hi Rob,
You should always use a tune request with a timed command when you want to
align channels.
One thing you could test is to try using the internal LO and see if you get
different results.
Also you could try using the integer N tuning mode, but I don't think it
will make any difference for
Hi Nate,
I changed the subject as to not further hijack the other thread. Of the 16
captures I collected, some of them included a tuning command (but using the
same timed commands I use for other devices such as TwinRx). But, others
did not. For example, for the first two data points below (with m
