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Author Topic: Setting phase with Cat No. 69 Test film loop Marin Zorica Jedi Master Film Handler Posts: 671 From: Biograd na Moru, Croatia Registered: May 2003 posted 01-08-2006 10:12 AM                     Today i was aligned one both and when i set phase with oscilloscope and Cat 69p test film i get good result on screen , but slit image on film isn't parallel with film, but one side is little down. may bee you didn't understand me and this is picture of what i got when i set phase: On picture i think wright position would be number 1, but then phase isn't good, and when i set phase to bee good i get slit positioned like on mark 2! This happens on both projector, and sound is OK, no distortion or any kind of other difficulties. Is this is ok, or i missed something?  |  IP: Logged Christos Mitsakis Expert Film Handler Posts: 242 From: Ag.Paraskevi, ATHENS, GREECE Registered: Sep 1999 posted 01-08-2006 11:27 AM                     Marin, Are you using a cinema processor with proper preamplifier, or a console or another substitude in the position of the preamp? Is it possible that the cell wiring is out of phase? Before your alignement did you check for same level in the two channels?  |  IP: Logged Marin Zorica Jedi Master Film Handler Posts: 671 From: Biograd na Moru, Croatia Registered: May 2003 posted 01-08-2006 04:30 PM                     Yes first i set level with 69T tone loop, then i set phase! No, cell is directly wired to processor! OK, it isn't unparalleled like is on picture, but slit just little bit goes down at one side. Correct me if i'm wrong, does when we do this sound may be distorted? Mine isn't so may bee this is wright to do, i repeat is same situation on both machines, because if i may bee do something wrong at one i think i can do at other same mistake. Projectors are Polish Prexer AP-61.  |  IP: Logged Marin Zorica Jedi Master Film Handler Posts: 671 From: Biograd na Moru, Croatia Registered: May 2003 posted 01-10-2006 10:01 AM                     No other ideas or opinions?? Is this wright what i align?  |  IP: Logged Brad Miller Administrator Posts: 17775 From: Plano, TX (36.2 miles NW of Rockwall) Registered: May 99 posted 01-10-2006 10:50 AM                     Set the alignment using the oscilloscope and forget what you see. Play a reel of A or SR analog film with lots of dialogue and not much other sound and verify it appears to be coming out of the center channel and not the surrounds. That would be correct.  |  IP: Logged Marin Zorica Jedi Master Film Handler Posts: 671 From: Biograd na Moru, Croatia Registered: May 2003 posted 01-10-2006 03:33 PM                     quote: Brad Miller Play a reel of A or SR analog film with lots of dialogue and not much other sound and verify it appears to be coming out of the center channel and not the surrounds Yes I know about this method, but problem isn't align because i align system good, but this screen doesn't have surround, but it have L C R speakers and when i align reader first i noticed is that i hear much dialogue from center, and center channel level is higher now. But mine point is why slit image on film is little angled, little strange to me, but it works...  |  IP: Logged

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