Greg.Glass%CMU-CS-CAD@sri-unix.UUCP (04/18/84)
A while back I asked for information on hooking up an RGB monitor to the TTL level output of the color card. I had asked for a friend but in the mean time he came up with a solution which I am passing along: Hi, I got your forwarded message but I already tried an alternate (and what I might label clever?) to using active elements to make the correct sync. What I did was just use a passive voltage divider (two resisters) on the R,G,and B signals to chop them down to ~ 1 volt and then just plug the composite video output into my monitors separate sync input! I don't beleive there is any such simple way if you need to combine the sync on the green signal. You also are probably asking "What about the I signal?" Right, I haven't dealt with it yet. I am going to try combining it with the others through diodes as you suggested. The current half-solution works fine except for one color combination on which it looses sync!? Haven't figured it out yet: Hopefully it has something to do with the missing I signal.