This is topic Dolby Reader Alignment Software in forum Film Handlers' Forum at Film-Tech Forum ARCHIVE.


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Posted by Leonardo Miceli (Member # 4417) on 09-18-2007, 01:28 AM:
 
Hello, i wish to know what points i most consider to know if my reader (dstr20) is failing or the film is damaged, using the dolby reader alignment software. my dolby processor is a cp650
 

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Posted by Oliver Pasch (Member # 1335) on 09-18-2007, 01:58 AM:
 
Hi Leonardo, to give it a start, try using a loop of appropriate test-film, such as Dolby Cat. 69T. If your readerhead plays this properly, it's likely that your equipment is fine and problems are due to the film. If not, you might want to call your tech-support as alignment needs somewhat of expertise.

Good luck.

O.
 

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Posted by Mark Gulbrandsen (Member # 72) on 09-18-2007, 08:48 PM:
 
The DSTR-20 has a nifty built in way to tell if the LED and video levels are good and that is if the indicator LED turns green... If it stays red then either the LED current needs increasing or the LED needs replacement. This LED is a field replacable assembly that can literally be installed in 30 seconds but its still advisable to have a tech with a scope and laptop set the LED current level for you so you get the maximum life span out of the LED. He can also easily verify fous, azimuth, and lateral position while he is at it.

Mark
 

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Posted by Louis Bornwasser (Member # 3063) on 09-19-2007, 10:34 AM:
 
"Dolby reader alignment software" DRAS-10 should never be used for initial set up. It is quite useful for final azimuth, etc. The reason is that time delay and error correction occur before your sampling point. Always follow the instructions that require a dual trace scope. You will not be mis lead this way. Louis
 

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Posted by Tim Reed (Member # 137) on 09-20-2007, 05:44 AM:
 
I love the BACP equipment! Finest available, IMHO.
 

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Posted by Sam D. Chavez (Member # 1841) on 09-20-2007, 10:59 AM:
 
Tim, much appreciated, your check is in the post.

For once I find myself agreeing completely with Louis.

I had a recent call from a tech who was trying to set up a new CCD/lens assembly with DRAS only and was getting all sorts of conflicting data. He seemed experienced but it soon came out he had no knowledge of focus and azimuth as it pertains to SR.D. The reader lens was perhaps 1/4 inch out of focus. He was trying to do it strictly by the numbers.

DRAS software has to have valid data to work, ie, a reader that is working in some fashion.
 

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Posted by Leonardo Miceli (Member # 4417) on 09-20-2007, 04:02 PM:
 
i used the program because there was no digital reading in the cp650, i was checking the data that gave me de pc with de dolby alignment, in some they marked 0 corners found and 0.0 to 1 error rating, in others the pc marked error rating 2 to 3 and the dolby processor 7-8. is this possible? i have the reading files in my pc, somebody can explain it to me.

thanks for your help
 

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Posted by Mark Gulbrandsen (Member # 72) on 09-20-2007, 08:26 PM:
 

quote: Sam D. Chavez

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I had a recent call from a tech who was trying to set up a new CCD/lens assembly with DRAS only and was getting all sorts of conflicting data. He seemed experienced but it soon came out he had no knowledge of focus and azimuth as it pertains to SR.D. The reader lens was perhaps 1/4 inch out of focus. He was trying to do it strictly by the numbers.

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