Film-Tech Forum ARCHIVE: Problem with MasterImage.

This is topic Problem with MasterImage. in forum Digital Cinema Forum at Film-Tech Forum ARCHIVE.

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Posted by Frederick Lanoy (Member # 5416) on 02-12-2010, 08:53 AM:

Hi,

Thirst of all, let me thank you for this forum and for his high level of quality.

Lately, i had some problems with MasterImage system :

When the 3 D show starts, the synch status remains sometimes in red (red lamp instead of green on the kit). The GPI (general purpose input) is well connected. The dolby TMS is in 3 D. The macro is the good one (scope JPEG). The filter goes to 4320 rpm as usual with triple flash. I checked the D cine communicator '3 D settings" : everything is normal (synchro, polarity, dark times, frame rate multiplication).

When the synchro fails, the 3 D quality becomes very bad : ugly ghosting especially in the rear panel. For exemple, with "Alice in wonderlands" trailer, the "From Tim Burton" : "From" is correct but "Tim Burton" (rear panel) is completly blurred. I add that the filter was clean wenesday evening at my third failure of the day (bad projectionnist day)...

If you got some ideas, there are more than welcomed.
Thanks for your help.

Frederick.

Posted by Steve Guttag (Member # 268) on 02-12-2010, 10:51 AM:

Scope JPEG? It should be Scope MPEG for 3D...on a single projector system.

As for troubleshooting...it is a matter of if the GPIO has the pulse on it or it doesn't...if it does...you can skip looking at the server and projector and point squarely at the Master Image controller or your cable. I would probably put an O'scope on the GPIO signal to verify it is there.

Steve

Posted by Mark Gulbrandsen (Member # 72) on 02-12-2010, 06:21 PM:

I know that Master Image had issues with the control card for a while. One unit I installed had a defective card "out of the box". The guy from M.I. was with me when we did this install and fortunately had a spare card with him. The new card went in and then it worked perfectly. Like Steve suggested as well... check for the sync pulse... it's at digital level so 0-5 volts or so is what you should expect to see.

Mark