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

» Film-Tech Forum ARCHIVE   » Operations   » Film Handlers' Forum   » digital reader cat no. 700 Problem

Author Topic: digital reader cat no. 700 Problem Mark Wright Film Handler Posts: 12 From: Nashville, TN, USA Registered: Mar 2000 posted 08-08-2000 11:58 PM                     It seems that when the lens was realighned, on the unit i was working on, that it would steel have an F pop up every once in awhile. The F was not becasue of the splice bcause it would pop up at different times. if i was using the digital reader 701, and had realigned the lens with the same thing happening, I could up the voltage on the led to keep the F from poping up. What could I do to help the 700 from having the failure letter pop up. Thanks and have a good day! ------------------  |  IP: Logged Brad Miller Administrator Posts: 17775 From: Plano, TX (36.2 miles NW of Rockwall) Registered: May 99 posted 08-09-2000 12:26 AM                     First thing, change the lamp. Second thing, you can try to up the voltage from the power supply. (Note sometimes turning DOWN the voltage will get a better reading if it is currently set too high.) If that doesn't work, you will need a laptop and scope to re-align it. Dolby digital readers can NOT be aligned without at least a laptop and DRAS10 software.  |  IP: Logged Ken Jacquart Film Handler Posts: 82 From: San Francisco, CA, USA Registered: Mar 2000 posted 08-09-2000 11:39 AM                        Brad is right. Try changing the reader bulb. They seem to last forever, but what happens is the reflector will get permanently fogged and will greatly reduce the video amplitude output of the reader. If playing with the voltage, you really should be using an oscilloscope to set the video amplitude to 4 volts. If you turn it up too high, you may actually saturate the amplitude... this usually happens if it is increased above 5.5 volts or so. Good Luck, ken  |  IP: Logged John T. Mellor Film Handler Posts: 52 From: Htafield, Pennsylvania, USA Registered: May 2000 posted 08-12-2000 12:11 PM                     The lens tube on the 700 reader can be bent slightly to achive a better reading Check that the lens is alignment If you don't have the dras 10 program for your computor and a scope better get someone that does its the only way I know how to align a dolby properly.  |  IP: Logged Gordon McLeod Film God Posts: 9532 From: Toronto Ontario Canada Registered: Jun 99 posted 08-12-2000 01:42 PM                     It would be better to move the lamp bracket (it is slotted to allow that Unless the light pipe got bent in transit it should not need to be adjusted Often just replaceing the lamp and then aligning it takes care of the problem. Also it is important to clean both the output of the lightpipe tube but also the input side with a cuetip and alcohol  |  IP: Logged Kevin Crawford Expert Film Handler Posts: 207 From: Sacramento, CA, USA Registered: May 2000 posted 08-13-2000 09:53 PM                     I seem to recall Lonnie saying that he did not like the software. While I prefer to use the computer, I have found that with a scope and the 671 cards, you can align it pretty well.  |  IP: Logged Gordon McLeod Film God Posts: 9532 From: Toronto Ontario Canada Registered: Jun 99 posted 08-15-2000 12:13 PM                     I preferr the scope myself as it is more dynamic. The Dras program relies on data transfer and is not in reel time To me it is like using some of the newer digital lcd scopes you have adjusted something and see the results later  |  IP: Logged Mark Gulbrandsen Resident Trollmaster Posts: 16657 From: Music City Registered: Jun 99 posted 08-15-2000 12:19 PM                     Ok you two guys, why not use the software and a scope like I do to get the best of both worlds. Mark  |  IP: Logged Mark Wright Film Handler Posts: 12 From: Nashville, TN, USA Registered: Mar 2000 posted 08-15-2000 12:33 PM                     Thanks guys! The info you have been giving is very helpful.  |  IP: Logged Brad Miller Administrator Posts: 17775 From: Plano, TX (36.2 miles NW of Rockwall) Registered: May 99 posted 08-15-2000 12:41 PM                     There's no fight here. Gordon, how long is the delay on your DRAS10? Is response time affected by the laptop? Mine is roughly 1/4 second late, which I can easily live with, but I am using a fairly high end laptop too. Just wondering if that makes a difference in response time.  |  IP: Logged Gordon McLeod Film God Posts: 9532 From: Toronto Ontario Canada Registered: Jun 99 posted 08-15-2000 12:55 PM                     >>Mine is roughly 1/4 second late>> , I don't think the laptop affects it but 1/4 second is still a lot of movement Mark I use both but reley on the scope more gord  |  IP: Logged

All times are Central (GMT -6:00)

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.