[Commit-gnuradio] r5156 - gnuradio/trunk/gr-atsc/src/python

[cswiger]

Author: cswiger
Date: 2007-04-27 12:35:40 -0600 (Fri, 27 Apr 2007)
New Revision: 5156

Modified:
   gnuradio/trunk/gr-atsc/src/python/README
Log:
Updated gr-atsc README


Modified: gnuradio/trunk/gr-atsc/src/python/README
===================================================================
--- gnuradio/trunk/gr-atsc/src/python/README    2007-04-27 17:36:29 UTC (rev 
5155)
+++ gnuradio/trunk/gr-atsc/src/python/README    2007-04-27 18:35:40 UTC (rev 
5156)
@@ -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_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 @@
 ./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.
-