Allign LOs for SBX boards

GNU Radio
1

Hi, I need to allign the LOs for SBX boards. I read the application
notes on UHD-Synchronization.

http://files.ettus.com/uhd_docs/manual/html/sync.html#align-los-in-the-front-end-sbx-wbx-n-series

I’ve been working on this for a while, but I’m still confused a bit.
Please
what is the directory for the UHD source and sink blocks where the timed
command must be applied. Which part of the code must be changed in
these files. Also how will I know that the LOs are now alligned.
I’m using ubuntu 11.10. I found 2 files (gr_uhd_usrp_source.cc and
gr_uhd_usrp_sink.cc) under the directory : gnuradio/gr-uhd/lib. I’m not
sure if these are the right files where the timed command must be
applied. I tried some changes in this files, but there is no reaction
from the USRP.

Your answer will be appreciated.

Regards.Dominique.

2

On 05/16/2013 02:38 AM, Dominique Guelord Ingala wrote:

alligned. I’m using ubuntu 11.10. I found 2 files
(gr_uhd_usrp_source.cc and gr_uhd_usrp_sink.cc) under the directory :
gnuradio/gr-uhd/lib. I’m not sure if these are the right files where
the timed command must be applied. I tried some changes in this
files, but there is no reaction from the USRP.

No problems. I think you have the wrong impression. You dont have to
change any files. The timed commands is actually an API call. This
called is exposed as part of uhd in the multi_usrp.hpp file. And its
also exposed in the gr-uhd gnuradio support wrappers. This means you can
use this API in C++ or python with the UHD gnuradio blocks.

-josh