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shelleybear
Joined: 18 Jul 2013
Posts: 70
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 Link Posted: Tue Jul 15, 2014 5:34 pm Post subject: Vertical Height. Barco 808s |
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Okay, good news from past posts.
video "noise" has been gotten rid of.
Seems related to the computer, and I"m going to retry that now that I have good cables running in all locations
Now, I've been trying to resize the projected image so that it fits ion the confines of my screen outline.
So far I have tried vertical screen size and blanking.
Neither control seems to have any effect on the size of the image (which still reaches down to the floor).
Does anyone have thoughts on this adjustment?
That aside, I am happy to say that I appear to be the only person in 70 miles who actually has a clue on set-up and alignment of C.R.T. projectors.
Damned shame there are so few folks who have them.
Think of the money I could make.
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Curt Palme
CRT Tech
Joined: 08 Mar 2006
Posts: 24303
Location: Langley, BC
TV/Projector: All of them!
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| Link Posted: Tue Jul 15, 2014 8:06 pm Post subject: |
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So you're saying that even with the V size at 0, the pix is too tall? If so, that is an issue with some of the 808 models. How's the width? If you're too wide as well, then the projector is too far from the screen. If the width is fine, then you'd have to do a board mod to get the V amplitude down to 2:35 or 16:9.
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CasetheCorvetteman
Joined: 09 Nov 2008
Posts: 6319
Location: Australia
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| Link Posted: Wed Jul 16, 2014 7:16 am Post subject: |
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If the image is centered vertically on the tube faces and its reaching the floor but not over shooting the top by just as much, then either your screen is too high, your projector has too much downward tilt, or its too far back.
When the width of the screen is full, the tube faces should be near full, with about 5mm of unused phosphor on each side at the widest point. What you should really do is set the active image on the tube face of the green to be about right, then move the machine to the correct location, to where it just slightly over shoots the screen's edges.
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Barco CineMAX, 120" OZ Theatre Majestic 16:9 screen, H/K AVR 7.1...
RUNCO DTV991 LC ( NEC XG 852 LC ) 100" 4:3 screen, H/K AVR 5.1...
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shelleybear
Joined: 18 Jul 2013
Posts: 70
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| Link Posted: Thu Jul 17, 2014 11:46 pm Post subject: |
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I'm going to try reducing the vertical height control considerably.
I hope that works, as my installation doesn't allow for movement of the projector itself.
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AnalogRocks
Forum Moderator
Joined: 08 Mar 2006
Posts: 26690
Location: Toronto, Ontario, Canada
TV/Projector: Sony 1252Q, AMPRO 4000G
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| Link Posted: Thu Jul 17, 2014 11:54 pm Post subject: |
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Can you take a measurement of the distance, projector to screen?
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CasetheCorvetteman
Joined: 09 Nov 2008
Posts: 6319
Location: Australia
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| Link Posted: Fri Jul 18, 2014 3:12 am Post subject: |
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| shelleybear wrote: | I'm going to try reducing the vertical height control considerably.
I hope that works, as my installation doesn't allow for movement of the projector itself. |
Well you might have to change that, otherwise its a waste of time installing it in the wrong spot.
If the projector is too far back its going to have a significant impact on the image quality and also the life of the machine, and i wouldnt be suprised if it was related to your other isuues.
Take a picture of the green tube face so we can see how much youre using.
_________________
Barco CineMAX, 120" OZ Theatre Majestic 16:9 screen, H/K AVR 7.1...
RUNCO DTV991 LC ( NEC XG 852 LC ) 100" 4:3 screen, H/K AVR 5.1...
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km987654
Joined: 25 Jul 2007
Posts: 2857
Location: Australia
TV/Projector: Barco BG809s
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| Link Posted: Fri Jul 18, 2014 4:02 am Post subject: |
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If the projector is in the wrong spot you will probably cause faster tube wear.
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shelleybear
Joined: 18 Jul 2013
Posts: 70
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| Link Posted: Fri Jul 18, 2014 7:04 am Post subject: |
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Twelve feet from projector to screen.
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Curt Palme
CRT Tech
Joined: 08 Mar 2006
Posts: 24303
Location: Langley, BC
TV/Projector: All of them!
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| Link Posted: Fri Jul 18, 2014 12:56 pm Post subject: |
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And what is your screen width?
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shelleybear
Joined: 18 Jul 2013
Posts: 70
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| Link Posted: Fri Jul 18, 2014 10:48 pm Post subject: |
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Update:
The vertical control handled the grid system admirably, HOWEVER, when I switch it back to working mode, once again the image spills out of the confines of the grid.
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CasetheCorvetteman
Joined: 09 Nov 2008
Posts: 6319
Location: Australia
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| Link Posted: Sat Jul 19, 2014 7:21 am Post subject: |
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What size is the screen?? At 12 feet back youd be wanting at least a 120" screen or more... My CineMAX is about 12 feet back with a 120" screen, and it had to be way further back than my 9PG and XG did, id expect the 808 to have a simular throw distance.
Adjust image size with the source image, not with the internal patterns.
_________________
Barco CineMAX, 120" OZ Theatre Majestic 16:9 screen, H/K AVR 7.1...
RUNCO DTV991 LC ( NEC XG 852 LC ) 100" 4:3 screen, H/K AVR 5.1...
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Curt Palme
CRT Tech
Joined: 08 Mar 2006
Posts: 24303
Location: Langley, BC
TV/Projector: All of them!
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| Link Posted: Sat Jul 19, 2014 4:44 pm Post subject: |
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I still need to know your screen width. Any further advice is useless without knowing that.
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shelleybear
Joined: 18 Jul 2013
Posts: 70
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| Link Posted: Sat Jul 19, 2014 6:08 pm Post subject: |
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The screen is obviously too big for the projector
What I can do is measure the width of the image and give you that.
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shelleybear
Joined: 18 Jul 2013
Posts: 70
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| Link Posted: Sat Jul 19, 2014 6:11 pm Post subject: |
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| CasetheCorvetteman wrote: | What size is the screen?? At 12 feet back youd be wanting at least a 120" screen or more... My CineMAX is about 12 feet back with a 120" screen, and it had to be way further back than my 9PG and XG did, id expect the 808 to have a simular throw distance.
Adjust image size with the source image, not with the internal patterns. |
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Case, the image spill over occurs with all sources.
V.C.R, Netflix, DVD etc
Most of which offer nothing in the way of tailoring the image.
I think this may be a hardwired problem.
What I don't get, is why the corrections show up in test and set-up mode, but don't carry over into work mode.
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Curt Palme
CRT Tech
Joined: 08 Mar 2006
Posts: 24303
Location: Langley, BC
TV/Projector: All of them!
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| Link Posted: Sat Jul 19, 2014 6:14 pm Post subject: |
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No, I need the screen width please, not of the image. The throw distance relative to the screen is what's important.
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CasetheCorvetteman
Joined: 09 Nov 2008
Posts: 6319
Location: Australia
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| Link Posted: Sat Jul 19, 2014 11:19 pm Post subject: |
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| shelleybear wrote: |
What I don't get, is why the corrections show up in test and set-up mode, but don't carry over into work mode. |
Because i tend to think youre not adjusting what you think you are.
And Curt needs the screen width.
_________________
Barco CineMAX, 120" OZ Theatre Majestic 16:9 screen, H/K AVR 7.1...
RUNCO DTV991 LC ( NEC XG 852 LC ) 100" 4:3 screen, H/K AVR 5.1...
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CasetheCorvetteman
Joined: 09 Nov 2008
Posts: 6319
Location: Australia
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| Link Posted: Sat Jul 19, 2014 11:20 pm Post subject: |
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| shelleybear wrote: | The screen is obviously too big for the projector
What I can do is measure the width of the image and give you that. |
That would be a useless measurement.
_________________
Barco CineMAX, 120" OZ Theatre Majestic 16:9 screen, H/K AVR 7.1...
RUNCO DTV991 LC ( NEC XG 852 LC ) 100" 4:3 screen, H/K AVR 5.1...
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CasetheCorvetteman
Joined: 09 Nov 2008
Posts: 6319
Location: Australia
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| Link Posted: Sat Jul 19, 2014 11:23 pm Post subject: Re: Vertical Height. Barco 808s |
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| shelleybear wrote: |
That aside, I am happy to say that I appear to be the only person in 70 miles who actually has a clue on set-up and alignment of C.R.T. projectors.
Damned shame there are so few folks who have them.
Think of the money I could make. |
Probably next to nothing, when you know what youre doing and can get it perfect it may be a different story 
_________________
Barco CineMAX, 120" OZ Theatre Majestic 16:9 screen, H/K AVR 7.1...
RUNCO DTV991 LC ( NEC XG 852 LC ) 100" 4:3 screen, H/K AVR 5.1...
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shelleybear
Joined: 18 Jul 2013
Posts: 70
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| Link Posted: Mon Jul 21, 2014 5:28 pm Post subject: |
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| Curt Palme wrote: | | No, I need the screen width please, not of the image. The throw distance relative to the screen is what's important. |
The width of the screen from border to border is 9 feet 4 inches.
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CasetheCorvetteman
Joined: 09 Nov 2008
Posts: 6319
Location: Australia
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| Link Posted: Mon Jul 21, 2014 10:42 pm Post subject: |
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So its a 125"-130" 16:9 screen?
Did you try adjusting the actual source input on the projector instead of the internal pattern?
_________________
Barco CineMAX, 120" OZ Theatre Majestic 16:9 screen, H/K AVR 7.1...
RUNCO DTV991 LC ( NEC XG 852 LC ) 100" 4:3 screen, H/K AVR 5.1...
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