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Topic: sound sync unit wanted
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Kevin Faulkner
Film God
Posts: 4071
From: Essex UK
Registered: Jun 2003
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posted June 12, 2006 05:58 PM
Must have been the 30 degree heat in London today making me brain dead.
I have had a reply from Pedro about these units and while he's waiting for his membership to go through he has sent me some text reagrding these units which will hopefully answer some of the questions.
quote: Only as a quick information:
During my development for NTSC compatibility on request of my US customers, I had been contacted by the German/French "Lumiere" film club to offer something for the 16 mm community and show/sell it on the big trading fair in Waghäusl (close to Heidelberg/Mannheim in Germany). As I received a lot of telefone calls and requests even of the German Elmo repair guy, I interrupted the NTSC developments and created adaptions for 16 mm projectors, togehter with newly designed sync controllers that now all have the option to be delivered with NTSC compatibility.
There are two models of interest:
the first (cheaper) one is the Elmo specific synchronizer, which "only" outputs a master signal for the internal Elmo regulation. I called it P1008GS-DDS. The "DDS" stands for Direct Digital Syntersizer. It is a frequency syntersizer, that can generate any frame rate at crystal accurancy. You have a small LCD screen which shows the frame rate with up to 8 digits, f.e. 2.400000 means 24 fps. With two foreward/backward bottons you can set the cursor to any of the digits and then increment or decrement it with a dial. This way, you can adjust the synthersizer to any frequency, even to the exotic american tv frame rate. There is also a memory available for 10 preset frame rates which is not erased with power on reset. So you can adjust 10 of your favourite frame rates and access them quickly using the memory positions, just like radio stations on your radio receiver. When I deliver a unit, I set the memories to 16,666666 - 18,000000 - 24,00000 - 25,00000 - 23,69700 - 21,00000.
the second (more costy) unit is called P1008-DDS and is for all projectors which work with a DC motor. Prepared interfaces are available for Bauer 8/16 models. Braun models don´t need any interfaces for regualtion and Elmo can be connected directly, too. It is more costy, because these projectors have no regulation unit in-built like the Elmo has, the synchronizer does the whole job (even better than the rather simple Elmo ESS circuit can do). The good thing is, that my regulation system contains a frame memory of in total 256 frames. So any start and stop delays of the projectors are fully compensated and it is no problem at all, to control a 16 mm machine like the Bauer P8 or the Bauer selecton. These machines receive a user applicable interface board, that senses the rotation of the projector shutter and reports the number of turns to the synchronizer. So the synchronizer can slow down or speed up the motor according to the regulation needs at a certain time. People here do show thier 16 mm prints with full DVD sound instead of the terrible optical sound. Other people use the units to control projectors with full coat tapes or to transform their full coat tapes into CDs or impulse 1000 Hz-tapes. Everything can be controlled with this units and we have the perfect bridge to the digital world.
prices: P1008GS-DDS: EUR 299.-, P1008-DDS: EUR 399.-
My next steps in development will be: 1. for active film shooters: a digital flash sound recorder, linked to the PC contact of the camera, based on a Microtrack 2496 recorder. 2. a Elmo GS1200MO interface, that bypasses the often faulty DDS regulation of the Elmo. The result will be a much more precise regulation with frame memory and the possibility to interrupt and resume projection.
Best regards to all of you!!!
Pedro
Sounds like Pedro has some very interesting units on offer and also to come. I'm sure we will all be looking forward to him joining us in the next few days.
Kev.
-------------------- GS1200 Xenon with Elmo 1.0...great combo along with a 16-CL Xenon for that super bright white light.
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