Hello,
We are using a TVRX2 board with a N200 USRP. Until recently, the system
was working properly with two channels using the attached flowgraph. For
reasons that are unclear, it stopped working and is no longer capable of two
channel operation (if we set the Num channels parameter to 1, the system works,
but with only one channel). So far as we can
tell, nothing in the S/W changed.
Version details and the error message appears below. Suggestions what has
gone wrong would be most appreciated.
--Dan
H/W: Dell Optiplex Dual 2.4 GHz, 2 GB / USRP N200 with TVRX2 GPSDO boards.
OS: Ubuntu 14
gnuradio: 3.7.6
Traceback (most recent call last):
File "/home/marlow/gnuradio/TVRX2/top_block.py", line 177, in <module>
tb = top_block()
File "/home/marlow/gnuradio/TVRX2/top_block.py", line 94, in __init__
channels=range(2),
File "/usr/local/lib/python2.7/dist-packages/gnuradio/uhd/__init__.py", line
122, in constructor_interceptor
return old_constructor(*args)
File "/usr/local/lib/python2.7/dist-packages/gnuradio/uhd/uhd_swig.py", line
1753, in make
return _uhd_swig.usrp_source_make(*args)
RuntimeError: LookupError: IndexError: multi_usrp: RX channel 1 out of range
for configured RX frontends
http://www.hep.princeton.edu/~marlow/gnuradio/TVRX2.png
http://www.hep.princeton.edu/~marlow/gnuradio/TVRX2.grc_______________________________________________
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