Posted by cityfly on 19, 2001 at 7:34 PM:
In Reply to: I don't think so. posted by scotto on 19, 2001 at 3:46 PM:
I don't want to watch tv, i just think this method could be a way to set the right sync by hardware.
the rgb signal comes from the vga port like in pc2jamma, the circuit just takes the composite video and outputs composite sync compatible with a tv/arcade monitor(15.7xxx k)
from the F.A.Q
http://www.arcadecontrols.com/arcade_monitors.shtml#Sync
Arcade monitors use rgb and composit sync. They run at the same frequency as a normal television.
saint's note: I had formerly commented I thought this was incorrect. Since then, a former tv/monitor tech named Don wrote me to say that this is in fact correct.
"A normal TV DOES have the same horizontal frequency as an RGB monitor out of our classic machines. It is 15.7xxx where as a VGA monitor is about 31k. Basically those RGB monitors are regular TV parts for the most part."