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This topic comprises 3 pages: 1 2 3
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Author
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Topic: Automating JSX1000 to switch to digital with DA20
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Aaron Garman
Phenomenal Film Handler

Posts: 1470
From: Toledo, OH USA
Registered: Mar 2003
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posted 03-29-2006 06:29 PM
Not sure about the relay.
The other side of the gray wire is hooked into the DA20.
Currently, in the picture of the backplane of the Ultra Stereo, there are TWO wires connected to the STEREO automation input. The RED one, from the DA20 and a BLACK one, that connects to the CHANGEOVER (this prevents switching on the format card when NCM is running). Also connected to the automation inputs are a BLACK wire on E (which is a ground?) and a GRAY wire which is CONNECTED to DIGITAL/EXT. Those two wires, along with the RED one go right back to the DA20. The only other wire, the GREEN one, is what allows the NCM or PROJECTOR 2 to have sound.
So if I run another wire for this ground, what connects to what? Do I need to get into the console?
I wish I had a better camera, sorry all. But thanks for bearing with me.
AJG
EDIT:
Maybe this will help in locating things

The red box are the automation inputs.
The green box is where the changeover wire runs to, and controls for a remote fader.
The wires were highlighted to the best of my ability. Forgive me for not knowing photoshop!
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Jason Miller
Expert Film Handler
Posts: 241
From: Little Rock, AR,
Registered: Mar 2004
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posted 03-30-2006 10:08 AM
Ok. then you have what is called a P2 card.
the P2 card was developed to take a 120 volt signal (from accessory cicuit or slide projector) and pulse projector 2 and STEREO on power up. when the P2 card powers down, it is supposed to release to projector 1 and pulse noin-sync. that is depending completely on how it was wired up of course.
what you need to do, is find the wires from your automation that go back to your processor. hook up a wire to STEREO and a wire to NS (nonsync). then the automation will switch the processor on changeover open to STEREO if it already isnt (more on that later). and will switch the processor to non-sync on changeover close. switching to nonsync will eliminate the tailout noise and make sure the DA20 switches back out of detect.
without being able to trace wires in your theatre, I couldnt promise the purple in one place was the purple in another. you will have to actually make sure they are the same wire.
the DA20 needs to have wires hooked up to STEREO, nonsync, and DIGITAL on the processor (and ground.. and yes E on the processor is ground). the DA20 uses these wires to switch formats as well as monitor if any other equipment does as well.
the P2 card most likely changes to projector 1 when the motor starts right? if it does, if you hook up the "R" output on the P2 card to nonsync, then the processor will switch to NS when the P2 card powers down. when the changeover opens, it will switch back to STEREO. if you notice the sound system playing the heading garbage at the start of the movie then you have the same problem as the tailout. the P2 cards should also have a wire from "P" to STEREO. this wire will switch the processor to STEREO when the card powers up. if the automation has nonsync hooked back up, then when the changeover closes the processor will switch to NS until the motor stops. the P2 card will switch it back to STEREO in projector 2.
have I lost you yet?
you asked earlier why there was a P2 card instead of just using non-sync. There was a decision made to get the intermission content to play in matrix instead of just 2 channel. I wont get into the politics of that or express opinions. this thread is to help you get your sound automation to work correctly.
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Aaron Garman
Phenomenal Film Handler

Posts: 1470
From: Toledo, OH USA
Registered: Mar 2003
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posted 03-31-2006 12:46 AM
Ok, here's the deal.
The P2 card, the one that takes the RCA plugs and then sending audio to the optical in on the Ultra Stereo, has NONE of the automation connections, well, connected. In addition, there is no POWER going to the board. Further more, the CHANGEOVER and GROUND (green and black from above) are connected to a relay inside the console. Off of that, it was hard to follow the other wires connected to it, as it was a jungle inside that console. Only reason I know those green and blacks go to the relay is because I looked inside another console and they had decided to use a handy dandy yellow jacket on that bundle of wire.
So, to say it bluntly, I'm stumped!
AJG
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Jason Miller
Expert Film Handler
Posts: 241
From: Little Rock, AR,
Registered: Mar 2004
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posted 03-31-2006 08:18 PM
Ok. That IS a P2 card. but it looks as if there is no power going to it. it was being used mainly as a converter from RCA to "balanced" line using the on-board isolation transformers.
the automation parts of it arent working becasue it has no power. there should have been a power plug that came with it. 12 VDC I believe and I will have to see what the current rating is. that power plug, if switched on and off with motor power using a 120V relay, will cause the automation to change like I described before.
since I am guessing you dont have the plug (whoever isnatlled this took a shortcut I guess), we have to try and work around it. we wont be able to switch to non-sync at the end of the show unless we found a way to switch it back to STEREO after proj2 was selected. if we can get the P2 card powered.. we can do that.
the select switch you have on the front is correct. if you take a wire on the back and momentarily touch ground to STEREO during a movie, does the DA20 light up the orange "analog" led? and if data is available, does it switch to digital?
I also just went back and saw the wire that goes from XO (changeover) to STEREO. if you select anything after the changeover closes, but before the motor stops, it is wired to select STEREO with proj2. holding a format select to ground is bad on some processors.. I dont know if this is true for USL. maybe Clint Koch would know that.
if it is okay to do that, then we can actually hook up a wire from automation NONSYNC to processor NONSYNC. and when changeover closes non-sync should be selected.
see what happens with that momentary wire from ground to STEREO during film run.
EDIT: you said in a previous post there wasnt power going to that P2 card. sorry.. I should have picked up on that.
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