17 Jul
2012
17 Jul
'12
12:07 p.m.
and in reality I'm struggling to try and understand why or what is
torquing the green signal. I've gone the quick and dirty route and have
added sync signals to green w/a resistor. I was rather flippant in my
selection of a value too. Never had a proble m. But what do I know.
Sync-on-green means that the green video signal actually looks like a
composite video signal, the sync pulses are 'blacker than black' (they
ahve a voltage level below the black level). if the monitor is poorly
designed, then the circuit may well take the bottom of the sync signal as
the black level (being the lowest voltge on that input), so when the
input is at the real black level the montiro displays a dim green.
-tony