my profile | my password | search | faq & rules | forum home

» Film-Tech Forum ARCHIVE   » Operations   » Film Handlers' Forum   » DTS without timecode (Page 3)

This topic comprises 3 pages: 1  2  3

Author Topic: DTS without timecode Karen Hultgren Master Film Handler Posts: 492 From: Agoura Hills, CA, USA Registered: Mar 2000 posted 12-10-2002 12:46 PM                        The bi-phase you are referring to is what we call "TACH". It is used on many shaft emcoders to sync up the mag sound track with the picture track (as when running a "double-system" screening). The DTS-E175 can use that as a start to send DTS timecode to the DTS player. Karen at DTS khultgren@dtsonline.com  |  IP: Logged Steve Kraus Film God Posts: 4094 From: Chicago, IL, USA Registered: May 2000 posted 12-10-2002 01:40 PM                    Karen, has that gained any use as a way to run double system previews as I've long advocated or is it pretty much a special venue thing?  |  IP: Logged Gordon McLeod Film God Posts: 9532 From: Toronto Ontario Canada Registered: Jun 99 posted 12-10-2002 03:20 PM                     The JSK timecode generator will provide a tach to DTS with a special eprom in it  |  IP: Logged Karen Hultgren Master Film Handler Posts: 492 From: Agoura Hills, CA, USA Registered: Mar 2000 posted 12-16-2002 03:09 PM                        Hi Steve, Right now, the E175 is used on special venue only. Karen at DTS khultgren@dtsonline.com  |  IP: Logged Gordon McLeod Film God Posts: 9532 From: Toronto Ontario Canada Registered: Jun 99 posted 12-16-2002 03:24 PM                     Two links to JSK products of interest http://www.jskengineering.com/product%20pages/prod05.htm http://www.jskengineering.com/product%20pages/prod01.htm I have several of the generators and find them very reliable  |  IP: Logged John Hawkinson Film God Posts: 2273 From: Cambridge, MA, USA Registered: Feb 2002 posted 12-16-2002 03:40 PM                     Wow, people actually add extra sprockets to the film path to add shaft encoders? I was under the impression that most double-system work involved adding shaft encoders to already-present driven shafts. --jhawk  |  IP: Logged Gordon McLeod Film God Posts: 9532 From: Toronto Ontario Canada Registered: Jun 99 posted 12-16-2002 10:22 PM                     Adding a shaft encoder is not as simple as it might appear The number of pulses per frame must match the device being driven any where from Westrex/RCA standard of 48Hz to 960Hz for Magnatech to 2400Hz for MTM (in quadrature as well) This usually entails drilling a hole in the back cover of the projector and machineing a new shaft and attaching a timeing pulley to drive a shaftencoder of the correct number of pulse per rev The new JSK allows a software adapation Far better  |  IP: Logged Steve Kraus Film God Posts: 4094 From: Chicago, IL, USA Registered: May 2000 posted 12-16-2002 11:45 PM                    That's why the idea of a sprocket with a couple of pad rollers in a device not unlike a DTS TC reader that bolts atop a projector has a lot of merit for a temp setup to run a preview off DTS disks. Not that the normal hookup, especially a temporary one, is that big a deal. On a Century a pulley goes on the front of the shutter shaft and the encoder bracket can hang off one of the back cover screw holes. For a Simplex with a 5-Star there is a shaft reducer that goes on the rear of the motor drive pulley (drill and tap three holes or just swap the pulleys with one so modified. Shaft encoder mounts to a stud which screws into one of the back cover thumbscrew holes. For a permanent installation the latter is done along with a back cover that has the lower right part cut away. For a Century or older Simplex with a front shutter shaft a bracket to mount the encoder more properly atop the machine is easily fabricated. I've put them on Super Simplexes and E-7's that way. And removed them from DeVry's! Century is similar but I didn't actually make that pair.  |  IP: Logged

All times are Central (GMT -6:00)

This topic comprises 3 pages: 1  2  3

Printer-friendly view of this topic

Hop To: Select a Forum: Category: Operations -------------------- Digital Cinema Forum Film Handlers' Forum Large Format Forum Ground Level Feature Info, Trailer Attachments & REAL Credit Offsets Category: Community -------------------- Film-Yak Film Handlers' Movie Reviews The Afterlife Bob Maar's Joke-A-Thon Category: Classified -------------------- Equipment and Supplies Wanted/For Sale Help Wanted/Seeking Employment Category: System -------------------- Software Beta Testing Forum

The Film-Tech Forums are designed for various members related to the cinema industry to express their opinions, viewpoints and testimonials on various products, services and events based upon speculation, personal knowledge and factual information through use, therefore all views represented here allow no liability upon the publishers of this web site and the owners of said views assume no liability for any ill will resulting from these postings. The posts made here are for educational as well as entertainment purposes and as such anyone viewing this portion of the website must accept these views as statements of the author of that opinion and agrees to release the authors from any and all liability.