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Author Topic: DTS not reverting to analog with wrong disks. Frank Dubrois Jedi Master Film Handler Posts: 896 From: Cleveland, OH Registered: Mar 2005 posted 09-30-2005 04:17 PM                    Since were on the subject of firmware..does anyone know the purpose of the last firmware upgrade? Where there bugs? It would be nice of them to include what the new firmware does. That way, if someone is having dificulties like this, we can look at the firmware revisions and go "ah ha..this last firmware update fixes the blah blah blah problem." Otherwise, we just have to assume the firmware update is for our own good. Perhaps I missed the firmware revisions note if it was included, if so...anyone know what the latest version fixed?  |  IP: Logged Heath Dutton Film Handler Posts: 37 From: Montgomery, Alabama / United States of America Registered: Jul 2005 posted 09-30-2005 04:24 PM                     I checked the back of a bunch of the 6D machines and they say... DATE CODE: 10-18-00 I don't know what these mean, or if they have anything to do with firmware, but here they are: DAC BIN: 8 TCR REVISION: 1.44 (on some screens it's 1.46)  |  IP: Logged Gordon McLeod Film God Posts: 9532 From: Toronto Ontario Canada Registered: Jun 99 posted 10-01-2005 01:54 PM                     TCR is the firmware 1.46 delt with making the newer piracy protect disks play in the unit otherwise it will often not play the disk  |  IP: Logged Bruce McGee Phenomenal Film Handler Posts: 1776 From: Asheville, NC USA... Nowhere in Particular. Registered: Aug 1999 posted 10-02-2005 06:16 AM                     Friday morning I was having the same problem with my DTS unit on one machine. Moved FlightPlan from another screen to this one. Suddenly, DTS would not kick on with the feature. The problem was an older trailer disc that was in drive C. I removed it, and the 2nd, and 3rd shows went without a hitch. I wasn't there for the 4th show, Friday. If the DTS sound is not detected, my automation goes to optical.  |  IP: Logged Frank Dubrois Jedi Master Film Handler Posts: 896 From: Cleveland, OH Registered: Mar 2005 posted 10-02-2005 03:56 PM                    We upgraded a few months back when the upgrade disc was sent to us. We've had no problems. But then, we didnt have any problems with the older firmware before the upgrade either. We use the 6AD's  |  IP: Logged Mike B. Smith Film Handler Posts: 82 From: Universal City Registered: Nov 2004 posted 10-03-2005 04:00 PM                     Back to the beginning of this thread, this problem was noticed around the time of Garfield, perhaps the drive got a hairball? Ok, moving on, seriously one of the important designs of the DTS system for obvious reasons is not to play the wrong sound track, but things happen and the wrong combination of prints and discs do occur. The way a DTS-6 and 6D works it assumes you have the correct combination and will pulse into digital, but if the wrong discs are loaded it will immediately revert to optical. This happens very, very quickly at the beginning of the feature, so fast that some Ultra-Stereo format cards Rev B and earlier will sometimes not revert back to optical, this of course results in the format remaining in digital with no DTS output, just silence. It’s easy not to understand or misdiagnose what is happening since during the show if you perform a simulated timecode failure everything switches correctly. There are several things that can be done to help correct this issue, the cheapest and easiest make sure the discs and feature match. Almost all complaints I have heard like this were with Ultra-Stereo and older format cards. As for questions about 1.46, this is the current and necessary firmware to have in the DTS-6,6D for proper playback of today’s DTS features. 1.46 improved the readability of amplitude modulation and jitter; the WOW percentage was reduced by 50% over V1.29 which was most noticeable on two-projector operation.  |  IP: Logged Heath Dutton Film Handler Posts: 37 From: Montgomery, Alabama / United States of America Registered: Jul 2005 posted 10-04-2005 01:41 PM                     quote: Gordon McLeod The pulse length from DTS to analogue is a bit on the short side for some JS format boards to read and I had to remove the schmit trigger caps on the format board in more than one location quote: Mike B. Smith This happens very, very quickly at the beginning of the feature, so fast that some Ultra-Stereo format cards Rev B and earlier will sometimes not revert back to optical, this of course results in the format remaining in digital with no DTS output, just silence. It’s easy not to understand or misdiagnose what is happening since during the show if you perform a simulated timecode failure everything switches correctly. So, if I'm understanding this correctly the analog pulse that the DTS-6D units send at the beginning of the feature with incorrect timecode information is a shorter pulse than the regular timecode failure pulse? If that is the case how do I go about correcting the Ultra-Stereo board's sensitivity? Or is there a way to lengthen the pulse via the DTS unit?  |  IP: Logged Daryl C. W. O'Shea Film God Posts: 3977 From: Midland Ontario Canada (where Panavision & IMAX lenses come from) Registered: Jun 2002 posted 10-04-2005 02:41 PM                        You could do one of the following: -modify the debounce circuit to decrease the debounce time -remove the trigger caps altogether -get a format card newer than rev B  |  IP: Logged Heath Dutton Film Handler Posts: 37 From: Montgomery, Alabama / United States of America Registered: Jul 2005 posted 10-04-2005 03:09 PM                     I've just checked, it appears all of our JS-200 Ultra-Stereo Format cards (JFM-20) are revision "D"  |  IP: Logged Clint Koch Phenomenal Film Handler Posts: 1435 From: San Luis Obispo, CA, USA Registered: Feb 2002 posted 10-04-2005 04:01 PM                     The "D" version is the latest revision of the JFM-20. Have you been able to try moving the JFM-20 from one unit to another to see if the problem follows the JFM-20?  |  IP: Logged

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