I need a little help with atsc demodulation procedure, I used the
found in the README
Verify signal, adjust antenna and find best gain setting using
station frequency from the fcc video database, and decimation of 10.
Capture data - adjust gain (-g) frequency (-f) and which side
the tvrx is on to fit your local setup:
usrp_rx_cfile.py -s -R B -d 10 -g 65 -f 503e6 atsc_data_6-4m_complex—I
use this command
./usrp2_rx_cfile.py -s -e eth0 -m 00:50:c2:85:30:9c -d 16 -f 519e6 -g 70
You probably still need fast disks to take the data, like a raid-0 set
striped sata drives. Make sure there are no or very few Ou overruns.
the raw usrp data in ‘short’ form halves the disk space/bus bandwidth
the usual complex form uses.
- Make pipes:
- In seperate windows run processes:
./interp_short.py <input rf data at 6.4Msps>
When I execute step 4, the scripts appear to execute properly. When I
the /tmp directory I do not see the pipes filling, the sizes remains 0.
stop the execution of the scripts I do not have any data in my output
I missing a step with piping the files.
If I remove the pipes and execute the files sequentially (without any
First executing ./interp_short.py then ./xlate.py a few seconds later
on. I see the files (/tmp/atsc_pipe_(1-3) growing but not
The 'btl-fsd.py’script is not saving data to /tmp/atsc_pipe_5.
I could use a little insight in executing this process.