Film-Tech Forum ARCHIVE: LOTR Return of the King not switching to NonSync after show.

This is topic LOTR Return of the King not switching to NonSync after show. in forum Film Handlers' Forum at Film-Tech Forum ARCHIVE.

To visit this topic, use this URL:
https://ft-forum.com/ft/cgi-bin/ubb/ultimatebb.cgi?ubb=get_topic;f=1;t=005676

Posted by Larry Zuverink (Member # 1483) on 12-23-2003, 02:53 PM:

Has anyone had any problems with Return of the King not switching to NonSync after the show with DTS. I've had calls from several locations with the same problem. All of these theatres worked fine before. Now not every print is doing it but definitly several from different locations are. Of corse my favorite Tech Karen from DTS is on vacation.

Posted by Chris Hipp (Member # 1788) on 12-23-2003, 03:10 PM:

That's ok, I can fill in for a DTS tech.

Just move the cds to different frives and see if the problem follows the discs. If so then you better send it in for repair.

That's most help I've ever gotten from DTS, of course I dont try to contact them very often.

Posted by Larry Zuverink (Member # 1483) on 12-23-2003, 03:16 PM:

Sorry Chris,

I've always got great service from DTS and especially Karen. Thanks for the idea though, It's the first thing I should of had them try.

Posted by Gordon McLeod (Member # 33) on 12-23-2003, 03:46 PM:

Is it possible that the theatres in question had shortned the tail piece and that the timecode to make the 6d not switch to analogue not get read?
I to have never had issues with getting things taken care of by DTS

Posted by Antonio Marcheselli (Member # 373) on 12-23-2003, 06:13 PM:

Agree with Gordon, about DTS customer care too!

Bye
A

Posted by John Westlund (Member # 913) on 12-23-2003, 07:51 PM:

This is happening with my print too. The processor always switches to non-sync at the end of the film but it is not switching with LOTR. The tail is all there I assume it is a problem with the end of the timecode.

Posted by Paul Konen (Member # 41) on 12-23-2003, 09:50 PM:

I had a similar problem with my CP500's because the automation would kick to non-sync but there was enough SRD data to cause it to kick to Dolby Digital.

I don't really see how it could happen here because the cue should switch to non-sync and stay unless there is a DTS timecode drop out for 4-5 seconds and then it picks up again after the last cue has gone through.

Paul

Posted by Jack Ondracek (Member # 1466) on 12-23-2003, 10:47 PM:

The problem is on the end of the print. I probably should have started a new thread, but it sort of came up here , if you want to read through it.

In any case, your system is probably switching to non-sync. It's switching back out because something screwed up about 4 feet or so into the rating strip at the end of the show. You'll see what looks like a black washout of the sound track. Splice out the rating strip just before that point... or take it off altogether and replace it with something with no DTS code. Your problem will go away.

Posted by Larry Zuverink (Member # 1483) on 12-24-2003, 06:42 AM:

Thanks Guys,
We found the problem to be cue placement. The normal placement did not work that the circuit was using. Moving it back seemed to work. I just did think the same thing could happen at several locations.

Paul,
Is your NonSync on the 500 set up at a Source? It should not be. A 500 should not be able to go to digital from nonSync with out being pulsed.

Posted by Jean-Michel Grin (Member # 1360) on 12-25-2003, 05:27 PM:

We had the same problem with a movie played in DTS and a DTS 6D processor. At the end off the show, when the timecode was not present, the DTS 6D switched the sound processor in SR format. Thats normal, is the failsafe function on DTS processor. In case of timecode loss, the DTS would switch to analog format (SR or Dolby A, depend of the jumper configuration on interface board) On DTS 6D it wil pulse the Dolby processor in the non-sync mode 60 second after the loss of timecode.
The cure we found was to add a step in automation, that pulse the dolby processor in non-sync again after tail-out and projector motor stop.
For some automation system, it could be necessary to cut the end tail, just after the last sound on the analog sound track, and replace it by black leader. Displacing the end cue could be necessary too.

Bye,

Posted by Paul G. Thompson (Member # 655) on 12-25-2003, 05:35 PM:

No problems here with a DTS6-AD except for a chras than cause the DTS to lock up and go into the bypass mode. Rebooting at the end of the show cleared the problem.

Posted by Larry Zuverink (Member # 1483) on 12-26-2003, 10:24 AM:

Jean,
Your right that the DTS should pulse to optical when it looses time code. But the interface board (D496 for a 6/cp65) is suppose to block the optical pulse when the time code goes to all 0's or a end code. The problem is they can't seem to keep that end time code in the same place. The 6D however can do either pulse block or it's own nonsync pulse depending how they decided to do it. Just another random non standard thing to deal with.