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[Discuss-gnuradio] atsc signal plots
From: |
Charles Swiger |
Subject: |
[Discuss-gnuradio] atsc signal plots |
Date: |
Fri, 05 May 2006 17:30:02 -0400 |
Here's some pictures for Friday - I though these were interesting,
the output of the 0.9 atsc equalizer showing the 8 levels getting
more distinct with every field:
http://webpages.charter.net/cswiger/g09_eq_data-1.jpg
Zooming in:
http://webpages.charter.net/cswiger/g09_eq_data-2.jpg
shows the field sync which is largely made up of only +5/-5,
and zooming in on the beginning:
http://webpages.charter.net/cswiger/g09_eq_data-3.jpg
you can make out the +5 -5 -5 +5 segment sync, followed
by the start of the pn511 pattern (7 -5's, +5, -5, then
8 +5's).
The 2.0 port isn't doing as well - a few eyes show up here
and there:
http://webpages.charter.net/cswiger/g2_eq_data-1.jpg
and that's with the NOP equalizer. The LMS eq is all noise
all the time.
- [Discuss-gnuradio] atsc signal plots,
Charles Swiger <=