I am confused now (I am generally confused anyway, but now by this topic as well) Do you mean that they can pulse the processor to non-sync like the dts-6D after all? I didn`t find anything about that in the manual.
The alternate relay solution is probably the best idea.
Posted by Ken McFall (Member # 845) on 12-20-2002, 04:21 PM:
When I first out in a DTS unit it did exactly what you describe.
My solution was to wire a relay that switched the control line of the DTS so that when the shutter was open the DTS could control sound formats as it needed. Once the shutter had closed the relay dropped out so the DTS could not control any sound formats.
The other thing I didn't like was that DTS can switch to Non-Sync itself at the end of a film. So I never connect the Non-Sync control line to the DTS.
Regards
Posted by Michael Schaffer (Member # 1204) on 12-20-2002, 05:05 PM:
A common problem caused by that function used to be that the logic board for the CP500 came from the factory with the non-sync jumper set so that the dts-6D would pulse the CP500 to softkey 8 for non-sync. Most installations had the CD player connected to non-sync input 1 which is usually selected from softkey 7. Now at the end of the show the automation would select softkey 7 for non-sync and then dts would pulse the CP500 to softkey 8 and so switch off the music again. Of course this could be changed very easily but I have NEVER seen an installation where it had been done the right way and of course most operators couldn`t know what the cause for the problem was.
Back to my earlier question: can some dts-6 pulse to non-sync?
Posted by Karen Hultgren (Member # 395) on 12-20-2002, 05:14 PM:
Carl,
I bet you have an old logic board from the DTS-6 player to the CP. See if the logic board (that connects the DTS via "BS22" cable -part of the big 50-pin cable- to the CP) has components or just traces. If no components, then you have an old logic board.
The logic board wtih components will block the pulse to go back to analog at the show end. You will still need to tell automation to go to NONSYNC at show end (true for the DTS-6, 2-drive player; the DTS-6D, 3-drive player, does this automatically).
If you have old logic boards, please send me an email with the CP model. I'll need the quantity and theater shipping address as well.
Karen at DTS
khultgren@dtsonline.com
Posted by Antonio Marcheselli (Member # 373) on 12-20-2002, 07:14 PM:
Just a bit OT: but how do you manage end films in your theaters? I usually have the print stop in the projector BEFORE the tails come...
Bye
Posted by Scott Norwood (Member # 30) on 12-20-2002, 09:36 PM:
Antonio -- how do you do that? Assuming a platter/automation show, most automations in the US are designed to have a "end of show" cue, which will close the changeover douser and switch the sound to non-sync (and often turn off the exciter lamp as well). The lamp normally stays lit, though, and the film will continue to tail out. Motor and lamp shut down when the failsafe drops.
The only exception to this that I have seen is the "intermission" mode on Maxi-10 automations, which I've never actually seen anyone use. The idea is that, in the intermission mode, the end-of-show cue will kill the lamp and motor and activate the countdown timer to start the next show; this is obviously only useful if you happen to have two different features spliced together on the same platter deck and in the same format.
Posted by Brad Miller (Member # 2) on 12-20-2002, 09:45 PM:
There are many automations that can have a show end stop cue, though most of them were intended for automated intermission use. I know the UA barcode automation was designed specifically so UA could run Will Rogers, stop the show and fire up the timer, then restart.
Of course the fabulous CA21 automation can handle this effortlessly. You can even set up the CA21 to do loop interlocks with only a splice required so the projectors and system never have to be rethreaded. But getting back to the point, even a CA21 can fix that dts fallback problem. ![[Big Grin]](biggrin.gif)
Posted by Antonio Marcheselli (Member # 373) on 12-21-2002, 03:12 PM:
We use Cinemeccanica Vector 1000 with platters. If we set the film as you said, we would have 16 projectors buzzing in alarm, with all the "programs" not ended to be reset manually from the central PC.
As I said we discharge the projector manually at the end of the feature!
Bye
Posted by Gordon McLeod (Member # 33) on 12-21-2002, 05:42 PM:
The original cam driven cinemecanica automation was that way as well
You could add a relay to bypass the failsafe after the dowser closes to prevent the alarm
done that on several of the older ones useing the unused excitor lamp contact
Posted by Aaron Sisemore (Member # 145) on 12-22-2002, 03:22 AM:
The Eprad/Strong CPA-10 can also stop a film before it tails out on a cue.
-Aaron
Posted by System Notices (Member # 2357) on 09-24-2007, 09:53 PM:
It has been 1737 days since the last post.
Posted by Scott Norwood (Member # 30) on 09-24-2007, 09:53 PM:
Bump.
I have the opposite problem described above--I want to _prevent_ DTS from pulsing into non-sync.
In my screening room, I am using a DTS 6D and CP65. I have no automation. At the end of the last reel of a DTS show, the 6D will pulse the processor into non-sync. I don't like this, because I would rather fade the music up gradually by hand than have the processor switch into non-sync abruptly. I would rather have the DTS box fault to format 05, which would be fine in my case because the inactive projector would be selected at show end (changeover setup). It would also be fine if it just stayed in format 10. The format doesn't matter, as long as it plays silence and gives me a few seconds to walk over to the processor, turn the fader down to "0", switch to non-sync, and then gradually turn the fader back up to "7".
I suppose that I could make up my own DB25 cable and just leave out the non-sync pin, but is there a simpler way to achieve this?
Posted by Brad Miller (Member # 2) on 09-25-2007, 02:30 AM:
Yes there is. Simply buy a regular DB25 cable and pull that pin out of it with a pair of needlenose pliers. No need to waste the time making up your own cable, silly! ![[Razz]](tongue.gif)
(You could always use that pulse to trigger the remote fader, which would be preset to 0.)
Posted by Scott Norwood (Member # 30) on 09-25-2007, 07:44 AM:
Ooh...clever idea about triggering the remote fader.
It seems like "pulse to non-sync at show end" really should be a jumper setting (or otherwise configurable), though, since it isn't necessarily desirable for every user.
Posted by John Hawkinson (Member # 1135) on 09-25-2007, 10:50 AM:
Settings are hard. Much better to publish a clear specification for what the box does and let you do your configuration externally. It keeps the manufacturer's job simple and straightforward. (Personally, I'd rather use a small breakout box than have special custom cables running around, but this is a style question.)
--jhawk
Posted by Blaine Young (Member # 3992) on 09-25-2007, 12:18 PM:
Not that it directly relates here, but this is easily done on the CP650. Simply removing the NS jumper (which allows pulsing either SK7 or SK8) should prevent the DTS unit from engaging any NonSync.