Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP
Path: utzoo!linus!vaxine!wjh12!genrad!decvax!harpo!ihnp4!zehntel!hplabs!sri-unix!Greg.Glass@CMU-CS-CAD
From: Greg.Glass%CMU-CS-CAD@sri-unix.UUCP
Newsgroups: net.micro.pc
Subject: "real" RGB from the Color Adaptor
Message-ID: <12492@sri-arpa.UUCP>
Date: Wed, 18-Apr-84 15:04:12 EST
Article-I.D.: sri-arpa.12492
Posted: Wed Apr 18 15:04:12 1984
Date-Received: Wed, 25-Apr-84 00:35:14 EST
Lines: 16

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.