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» Film-Tech Forum ARCHIVE   » Operations   » Digital Cinema Forum   » What causes the screen to go pink? (Page 4)

 
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Author Topic: What causes the screen to go pink?
Phil Ranucci
Expert Film Handler

Posts: 236
From: Carpinteria,CA, United States
Registered: May 2006


 - posted 07-14-2012 02:11 PM      Profile for Phil Ranucci   Email Phil Ranucci   Send New Private Message       Edit/Delete Post 
Having the same issue with NEC. 2D movies play fine in the 3D macro but are pink in the 2D macro. 3D plays fine in 3D macro. Installed the newest service pack but still no change, Any ideas?

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Tony Bandiera Jr
Film God

Posts: 3067
From: Moreland Idaho
Registered: Apr 2004


 - posted 07-14-2012 03:02 PM      Profile for Tony Bandiera Jr   Email Tony Bandiera Jr   Send New Private Message       Edit/Delete Post 
Yeah, Your colorspace file in the 2D macro is set wrong or corrupted. Check also the input format, etc.

Should be a simple fix...I have only dealt (briefly) with one NEC projector and had the problem because I didn't save my setup correctly.

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Steve Guttag
We forgot the crackers Gromit!!!

Posts: 12814
From: Annapolis, MD
Registered: Dec 1999


 - posted 07-14-2012 09:07 PM      Profile for Steve Guttag   Email Steve Guttag   Send New Private Message       Edit/Delete Post 
Get you Mr. DCinema Tony! Pretty soon you'll be wearing a mask and breathing with a mechanical clank [Wink]

NEC is BY FAR the most persnickity when it comes to executing its macros (aka titles). Just keep this in mind...it takes (at least) 16-seconds for it to do most ANYTHING...so if you are going to strike the lamp...wait 16-seconds before changing formats and vice-versa...don't try to confuse it by having multiple cues go to it either...it will likely ignore one. I have also been known to hit it with multiple cues...especially if it is being controlled by a GDC server. Load up on the black segments at the beginning of the show to allow for the NEC to do its thing.

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Mike Blakesley
Film God

Posts: 12767
From: Forsyth, Montana
Registered: Jun 99


 - posted 07-14-2012 11:02 PM      Profile for Mike Blakesley   Author's Homepage   Email Mike Blakesley   Send New Private Message       Edit/Delete Post 
And why does it take so long to think about stuff? What kind of processor do they use in these things, leftover "286's?"

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Buck Wilson
Jedi Master Film Handler

Posts: 894
From: St. Joseph MO, USA
Registered: Sep 2010


 - posted 07-14-2012 11:40 PM      Profile for Buck Wilson   Email Buck Wilson   Send New Private Message       Edit/Delete Post 
Oh great, just what I like to hear when we're about to get 7 of them.

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Monte L Fullmer
Film God

Posts: 8367
From: Nampa, Idaho, USA
Registered: Nov 2004


 - posted 07-15-2012 02:40 AM      Profile for Monte L Fullmer   Email Monte L Fullmer   Send New Private Message       Edit/Delete Post 
NEC's aren't that all bad, but you just have to adjust your way of thinking around these units and learn all of their tricks.

Now, just be thankful that you don't have any SONY units ......

-Monte

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Tony Bandiera Jr
Film God

Posts: 3067
From: Moreland Idaho
Registered: Apr 2004


 - posted 07-15-2012 03:01 PM      Profile for Tony Bandiera Jr   Email Tony Bandiera Jr   Send New Private Message       Edit/Delete Post 
quote: Steve Guttag
Get you Mr. DCinema Tony! Pretty soon you'll be wearing a mask and breathing with a mechanical clank [Wink]
[Darth Vader voice on:] I find your lack of respect disturbing. [Darth Vader voice off:] [Big Grin]

quote: Monte L Fullmer
Now, just be thankful that you don't have any SONY units ......
Ahh yes, the dreaded 4-letter S-Word.....avoid them like the plague if you can!!

Buck, listen to what they said re the NEC: allow time for EVERY cue change and don't stack the cues and you'll be ok.

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John Wilson
Film God

Posts: 5438
From: Sydney, Australia.
Registered: Dec 1999


 - posted 07-15-2012 04:13 PM      Profile for John Wilson   Email John Wilson   Send New Private Message       Edit/Delete Post 
quote: Steve Guttag
Get you Mr. DCinema Tony! Pretty soon you'll be wearing a mask and breathing with a mechanical clank
I was thinking the same thing. [Big Grin]

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Geoff Newitt
Film Handler

Posts: 49
From: FARINGDON, OXFORDSHIRE, UK
Registered: Dec 2011


 - posted 07-20-2012 05:50 PM      Profile for Geoff Newitt   Email Geoff Newitt   Send New Private Message       Edit/Delete Post 
We have 59 screens; 40 odd Christie of various models (mostly Series 1), a dozen NECs (10 NC800 2 NC1600), and six Barco DP2000s. Doremi servers throughout.

From what I've seen - regarding format changes and related glitches - the NECs never glitch, but are painfully slow; the Christies occasionally glitch, dowser commands are very slow on the late Series 1s, specially from the touch panel; the Barcos are pretty poor. Lamp strike is the most likely to fail, followed by the dowser open command.

Sure, sometimes it's operator error or stacked cues; but we're a small enough company that I know and trust most/all of our projectionists. Plus, instances are gradually falling off as firmware updates come through...

And I totally get the comments about the poor control buttons on the Barco. One projectionist (no longer with us) managed to push the buttons through the panel in his frustration! (No, we don't have touch panels for the Barcos.)

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Ian Freer
Expert Film Handler

Posts: 135
From: Wellington, New Zealand
Registered: Oct 2003


 - posted 07-20-2012 09:56 PM      Profile for Ian Freer   Email Ian Freer   Send New Private Message       Edit/Delete Post 
I have found that when using GDC SX2000A servers, stacking cues into NEC Series 2 works fine (my start cue contains Dowser Close, Lamp On, FLAT 2D all at the same time), never missed a cue (unless my customers haven't told me about it!...)

However I've definitely had to make sure there are no stacked cues when using Doremi DCP2000/2K4's into NEC Series 2.

In both cases; Yes, the NEC's are a bit on the slow side to finish performing the format and lamp commands, but dowser is quick enough.

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Frank Angel
Film God

Posts: 5305
From: Brooklyn NY USA
Registered: Dec 1999


 - posted 07-20-2012 10:56 PM      Profile for Frank Angel   Author's Homepage   Email Frank Angel   Send New Private Message       Edit/Delete Post 
So when cues are not stacked, how much time must be left between them? In terms of the presentation, can you still have things happen say, seconds apart? If I want to hit the screen and at the same time cue the curtains to open, how far apart with those cues need to be in order not to have the stacking issue?

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Tony Bandiera Jr
Film God

Posts: 3067
From: Moreland Idaho
Registered: Apr 2004


 - posted 07-21-2012 12:28 AM      Profile for Tony Bandiera Jr   Email Tony Bandiera Jr   Send New Private Message       Edit/Delete Post 
Frank, depending on the projector involved only a second or two is necessary. As mentioned since NEC's take around 16 seconds it would seem that 16 seconds would be the minimum for those.

I am mainly interfacing Dolby DSS 200's with Christie projectors and a second seems to be enough separation for all cues. Also, with the home screening rooms I am doing we are talking to an outboard AMX system with serial cues to do things like lights and curtains. The AMX is picky and will puke if you stack cues, but it only takes as little as 1/2 of a second separation to avoid the problem.

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Scott Norwood
Film God

Posts: 8146
From: Boston, MA. USA (1774.21 miles northeast of Dallas)
Registered: Jun 99


 - posted 07-21-2012 10:11 PM      Profile for Scott Norwood   Author's Homepage   Email Scott Norwood   Send New Private Message       Edit/Delete Post 
Couldn't you just incorporate the "douser open" and the "curtain open" functions into one AMX program (script, whatever you call it) and then send one command from the server to the AMX to run that multi-function program, rather than having to send multiple cues spaced out over time?

(I am thinking out loud here...I know little about AMX programming, and my D-cinema experiences have been with manual operation only, either with no automation or with automation bypased.)

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Tony Bandiera Jr
Film God

Posts: 3067
From: Moreland Idaho
Registered: Apr 2004


 - posted 07-21-2012 10:40 PM      Profile for Tony Bandiera Jr   Email Tony Bandiera Jr   Send New Private Message       Edit/Delete Post 
Scott, in theory yes, by having the server issue a cue (let's call it "action") and having the timing of the events (dowser, curtains, lights, etc.) written into a subroutine in the AMX program.

The drawback is that let's say for whatever reason you want to change the timing of any of those events..instead of shifting the individual cues on the server's timeline you would have to edit the AMX program code, recompile it and reload it into the AMX system. Very cumbersome. (It is possible to write the AMX code to make user access to cue timings via the AMX touch-panel, but that code would be needlessly complex.)

The reality is, with AMX and serial data, a delay of less than 1/4 second is all that is needed between serial command strings being sent to (or from) the AMX Master.

It is, IMHO far easier to do the individual functions from the server and offset them by a second to keep from overrunning the AMX' serial buffers.

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System Notices
Forum Watchdog / Soup Nazi

Posts: 215

Registered: Apr 2004


 - posted 05-07-2014 08:49 PM      Profile for System Notices         Edit/Delete Post 

It has been 654 days since the last post.


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