Hi Rob,
Have you resolved the N310 "No PPS detected" issue? We are facing same problem
where 3.12 and 3.13 are not working (No PPS detected) while 3.11 is working
fine. I traced to the same spot in code: get_time_last_pps returns 0 always.
Appreciate your help!
Thanks.
Yun
<quote author='Jason Matusiak via USRP-users'>
Hi,
I have mentioned some of these issues in other threads, but decided to
combine them all here in one post since there are a number of unresolved
issues.
- Unable to 'Sync' using UHD 3.12 or Master. The resulting "No PPS
detected" error prevents us from running multiple channels simultaneously
and is thus a big problem for us. This problem does not occur with UHD
3.11.
- this problem can be demonstrated easily using default
"benchmark_rate" with multiple channels
- Error occurs in "set_time_unknown_pps()" because
"get_time_last_pps()" always returns zero and thus never changes prior
to
the 1.5 second timeout
- Inaccurate Tx power output levels using UHD 3.12 or Master. The graph
below shows the issue of erratic Tx power levels using 3.12 (right plot)
and well-behaved Tx power levels using 3.11 (left plot)
- this problem can be demonstrated easily using default "tx_waveforms"
- The multi_usrp functions set_tx_info() and get_tx_info() do not work
correctly with ANY version of UHD. This is not a major issue for us
because
we can work around it, but it would be nice if it was fixed.
- this problem can be demonstrated by creating a 'for' loop over the
number of TX or RX channels and simply calling the function
using the loop
index for the channel argument. An exception is thrown for some
channel
indices.
- Note that in 3.12, the function get_rx_info() works correctly, but
get_tx_info() does not work at all
- We were unable to get the external LO functionality working
correctly. We have not revisited this issue for a while, but I
previously
posted to the user's group on this problem.
Rob
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