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Octavio
Ancient_Hacker said:IIRC there are very accurate signals in your basic color TV off the
air signal. Now the question is it the 3.58 MHz color subcarrier or
is it the 3.545... color burst? What about the 4.5MHz sound
subcarrier? And how accurate are they?
Any info appreciated.
Color burst is just a... burst of subcarrier signal where the phase is
synchronized with that subcarrier for the picture frames involved. I don't
quite remember exactly but the burst phase is offset by 90 degres with the
subcarrier phase in NTCS, the correct phase can be obtained with a simple,
ajustable RC network in the TV set, the old famous TINT control.The short
term precision of the phase is the important factor in television to get
correct colors in the following picture frames.
Long time frequency accuracy may not be interesting.
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