diff options
| -rw-r--r-- | gr-atsc/src/python/README | 22 |
1 files changed, 11 insertions, 11 deletions
diff --git a/gr-atsc/src/python/README b/gr-atsc/src/python/README index c5dd4af93..fb9ec71e3 100644 --- a/gr-atsc/src/python/README +++ b/gr-atsc/src/python/README @@ -1,13 +1,18 @@ -Currently the best, fastest software decode is by using -19.2MSps over 5 processes. +Decoding ATSC using 19.2MSps rate over 5 processes +-------------------------------------------------- -1) Capture data - adjust gain (-g) frequency (-f) and which side +1) Verify signal, adjust antenna and find best gain setting using usrp_fft.py, +station frequency from the fcc video database, and decimation of 10. + +2) Capture data - adjust gain (-g) frequency (-f) and which side the tvrx is on to fit your local setup: -usrp_rx_cfile -R B -d 10 -g 65 -f 503e6 atsc_data_6-4m_complex +usrp_rx_cfile.py -R B -d 10 -g 65 -f 503e6 atsc_data_6-4m_complex +You probably still need fast disks to take the data, like a raid-0 set of +striped sata drives. Make sure there are no or very few Ou overruns. -2) Make pipes: +3) Make pipes: mkfifo /tmp/atsc_pipe_1 mkfifo /tmp/atsc_pipe_2 @@ -15,7 +20,7 @@ mkfifo /tmp/atsc_pipe_3 mkfifo /tmp/atsc_pipe_4 mkfifo /tmp/atsc_pipe_5 -3) In seperate windows run processes: +4) In seperate windows run processes: ./interp.py <input rf data at 6.4Msps> ./xlate.py @@ -24,9 +29,4 @@ mkfifo /tmp/atsc_pipe_5 ./viterbi-out.py <output mpeg transport stream> -Status: Not fully working. - -Currently gr-atsc 2.x will produce the exact amount of data as a working system, -but there are a some differences in the output. If you substitute the btl-fsd.py -block with the corresponding code from gnuradio-0.9 it works. |