CompuServe Thread

#Gpi and Par

5 messages in this thread
#173226From: EDWARD HARVEYJun 2, 1995 1:47 AM
Im beginning to do animations that are long enough to require frame accurate laying off to tape of par segments. I recall that some forum folk were using the GPI trigger to control the par. Any details on how this is accomplished would be appreciated. Ed
#173271From: Mark ChambersJun 2, 1995 9:38 AM
Edward- It's pretty staight forward if you have an editor with GPI trigger. The connection to the Par is the RCA jack on the multipin breakout cable. It is simply a contact closure (to my knowledge). The RCA jack on the Par is connected to one of the triggers on our Sony editor. To execute it, we simply tell the editor what timecode to fire the trigger, set the animation to the first frame, arm the trigger in the Par S/W, and make the edit. Hope that helps. -Mark
#173353From: EDWARD HARVEYJun 2, 1995 4:05 PM
Thanks for the information Im having a cable made so I can trigger it from a Vlan controller. I needed to know that it triggers on a closure. Ed
#173394From: Don LandisJun 2, 1995 8:34 PM
I believe it triggers on a +5vdc pulse. This usually what the GPI interface generates on send. At least this is what I see on the scope. The other thing you might need to calibrate is the GPI timing delay in the PAR. This is setup in the submenu and is very accurate. We have ours set for 5.00 seconds which is the delay for the preroll. Our controller does a 5 second preroll after sending the GPI pulse. In other installations you may need no delay.
#173425From: EDWARD HARVEYJun 3, 1995 1:32 AM
Thanks Don Ed