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Author
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Topic: SDDS Theatres
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Michael Schaffer
"Where is the Boardwalk Hotel?"
![](http://www.film-tech.com/ubbmembers/1204d.jpg)
Posts: 4143
From: Boston, MA
Registered: Apr 2002
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posted 05-06-2003 08:42 PM
Not an uncommon problem: the dts-6D is very likely not properly installed to the DFP. Most technicians get this wrong and then wonder why it doesn`t work as it should. And then blame it on the DFP... It is completely covered in the SDDS technotes (available for download here) how to do this right. Only, many techs don`t read them!!!!!!!!
You can also check if the fallback is properly set up in the software. Of course, as always this can be dangerous if you change any options you don`t understand. But it is completely OK if you just look without changing stuff randomly. To do this, you have to access the menu. Select the white square key on the right (Preset 8) where SDDS should be. Push the down arrow and then select MENU. It is very easy to use: navigate with the arrow keys and press ENTER to select an option when it is blinking. Go to CONFIG. Once you select it, the DFP will want a password. It is usually SDDS. Use the fader knob to select the right letters, press ENTER to go to the next letter. If the password is changed, there is also a trick around it which I will tell you if needed. Once inside, press ADMIT. Then go to PRESET. The formats with all their settings are called presets in the DFP. Use the down arrow until you reach #8:SDDS . Below the format name, it says ACM. ACM (Analogue Concealment Mode) is the fallback sequence for SDDS. If your dts is set up on Preset 6, and the analogue stereo ("SR" or "NR2") on Preset 5, then it should say ACM:# 6 5 See the SAVE option on the right? As long as you don`t change any settings and confirm the changes there, nothing will be changed. You also have the EXIT option right there.
If it only says, for example ACM:# 5 , then the DFP will fall back straight to analogue. If the ACM is configured according to the presets on the front panel, then it will remain to check if the hardware setup is done properly. Which, as I said, it almost never is.
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