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Diffstat (limited to 'gr-dtv/examples/README.catv')
| -rw-r--r-- | gr-dtv/examples/README.catv | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/gr-dtv/examples/README.catv b/gr-dtv/examples/README.catv new file mode 100644 index 0000000000..84c4cd0b26 --- /dev/null +++ b/gr-dtv/examples/README.catv @@ -0,0 +1,31 @@ +A test Transport Stream (26.970352 Mbps) for the example flow graph +is available here: + +http://www.w6rz.net/advqam64.ts + +It is 357,356,980 bytes. + +The three parameters Control_Word, I_taps and J_increment can be +used to control the interleaver from the following table. + +Control_Word I_taps J_increment Burst protection Latency + 0 128 1 95 us 4 ms + 1 128 1 95 us 4 ms + 2 128 2 190 us 8 ms + 3 64 2 47 us 2 ms + 4 128 3 285 us 12 ms + 5 32 4 24 us 0.98 ms + 6 128 4 379 us 16 ms + 7 16 8 12 us 0.48 ms + 8 128 5 474 us 20 ms + 9 8 16 5.9 us 0.22 ms + 10 128 6 569 us 24 ms + 11 Reserved + 12 128 7 664 us 28 ms + 13 Reserved + 14 128 8 759 us 32 ms + 15 Reserved + +The default is Control_Word = 6, I_taps = 128 and J_increment = 4 +which seems to be the most commonly used on CATV systems. + |