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That's easy. The other trailers, while they have timecode and all, won;t play in digital because the matching digital data is not on the 'Klumps' DTS disc. IIRC, the only digital trailers included on the 'Klumps' disc were for 'Grinch' and 'Parents' And if you are trying to use a DTS trailer disc in a 2-drive system with a 2-disc feature thats not a really good way to run things as the DTS will reset every time you eject the discs...

"When the DTS Sonic Landscape trailer comes through, it kicks back into digital for that, but cuts out in the middle of the Cinemark "Image Trailer." (The first half of
the trailer plays in digital, then it cuts out.) The reader head light is solid through the whole trailer, and on the DTS unit the "CD-Rom" "Timecode" and "Digital" lights are all lit, all that it takes to put it back in is manually prompting the "Digital" button on the 6-channel auto-format card. Otherwise, it will continue to play the entire print in analog. Any ideas?"

This is a VERY common occurrence with Ultra*Stereo prcessors (although I have seem Dolbys do it too with a DTS connected). Is there a cue in the middle of the Cinemark Image trailer? I'm willing to bet there is. What happens is the DTS will switch the cinema processor into digital, then the cue is executed, usually dimming the lights and performing some sort of sound format change (almost always from 'mono' to 'stereo') and takess the cinema processor OUT of 'digital' and a DTS will not revert the system back into 'digital' unless the DTS fails, then re-establishes digital playback, and then switches back into digital, then everything usually runs just fine...

A rerlated problem which happens with both Dolby Digit6al and DTS is at the end of a movie, if the final cue is executed too early, the processor is switched into Non-Sync and the end of the film runs out still playing a digital track. As soon as the digital track ends, the digital processors think there is a digital fault, and switch the cinema processor out of NonSync and into analog, leavingt you without house music until you can get around to manually pressing the button. With some automations, you can add a redundant final cue that will switch it back into nonsync as the tail goes thru the cue detector.

Be sure no sound cues or commands occur within timecode. Some theaters send a sound pluse when the dowser opens. That can override the DTS player. In this case, put a little black leader so that the command can happen before the DTS player sees timecode.

I hope this helps.

Cut the wire that goes to the MONO/STEREO switch on the back of the control panel. Put in a crimp-on barrel connector or something like that in case you want to use that switch in the future.

If you've wired your system like we did ours, that switch doesn't do anything:
There are three control wires (and a common) comming from the automation to the processor. One is Non-sync, the second is Mono and the third is stereo. We put the Mono and Stereo wires onto the Stereo input of the processor becasue we want the trailers to be Stereo, too. That switch just says whether the (outboard) cue switches the processor to Stereo or not when the feature starts.

Anyways so what we did, is we added 6 seconds of black leader after the "image" trailer. that way, the timcode would disappear and then when the feature hit, saw the timecode and pulsed it back into digital. Thanks to Paul K. this was very time consuming at first considering that this was a 20-plex.

We were pretty much going to try what Randy said but, Cinemark were i am from was very strict about stuff like that and it didnt make it any easier when the Cinemark world headquarters was right across the parking lot. They would often come in to the booth and some would yell. One yelled at my friend because he found a frame counter in the booth and said that we were not allowed to have it. Stupid!.

------------------
--"That's my story and i'm sticking to it!"--

Just make sure you cut the RIGHT DAMN WIRE!

"X" marks the spot...

Drawing # D-1001565
Sorry, photocopies of photocopies don't scan well. But I think you'll get the idea.

Put some kind of snap together connectors on the end of the wires so you can restore if you need to.

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I assumed the reason DTS won't switch back to digital after a format button is activated is that it doesn't know whether you MEANT to do it or not. If you WANT to switch out of digital for some reason, you shouldn't have to worry about the thing switching itself back when you're not looking.

I don't know whether or not that's true but this is one of the reasons I like DTS....

Unless the relay or logic gate is a continuously held contact changing state only when valid digital playback is occurring, then there arent any glitches or audible changes to the sound. Dolby SRD units do exactly this, making it easy to set up the automation to force digital and if there isn't any viable digital to play, it stays in analog, regardless of what the automation pulse (or manually pushing the 'format 10' button or equivalent) told it to do. Much easier to deal with this way.

"If you WANT to switch out of digital for some reason, you shouldn't have to worry about the thing switching itself back when you're not looking."

Another easy one.

With a DTS, you can either:
1. Take the discs out of the drives

2. Simply turn the DTS unit OFF.

For SRD you have a few different options:

1. Turn off the Cat 699/700/701 penthouse. Best choice for CP500s!

2. Turn off the DA10/DA20 unit
(best choice if you have basement readers)

If you have a CP500 with a basement reader, things get a little more complicated, however.

There was a time that people would keep caling up to the booth and say that there's a problem with the DTS in a theatre. The complaints ranged from it being out of sync, to "it just SOUNDS funny." Every time I'd check it out it would be fine for me. One day I got fed up, came in early and threaded up a nice, big loop of film. It went around the "square" so to speak. (Out the proj., to the platter take-up then up to the platter payout then back into the proj. -- I figure about 25 feet.)

I ran this loop contiunously for about an hour. I switched from format to format, all the while checking everything. I even physically checked all the speakers behind the screen. I let it run for a while and went outside to smoke a cig. (The door is only 10 feet away, around the corner.) I came back and checked everything again. When I was satisfied that I had done everything I knew how to MAKE it mess up I called the manager and SHOWED him that it was okay.

This is the incident I was thinking of when I wrote that I wanted to be able to switch out of DTS. I just predded the format button, knowing that the DTS wouldn't switch back.

Alas, the roll around digital systems in this area have pretty much died out since most companies around here favor one of the digital systems more than the others.

Steve