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Discussion Starter · #1 ·
When you install the 10HT and display the internal test grid, should the far right side have smaller (skinnier) boxes than the rest of the grid? By about 3" on a 92" screen?


thanks

Paul


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Paul B. Musser

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Discussion Starter · #3 ·
thanks, I thought I was going crazy.


I have my lens centered between the two walls but the projected image is off by 2 1/2" to one side. Its correct to center the lens and not the unit, right? Its also possible my peerless mount is not perfectly parallel with the screen wall. I havn'et put the actual screen up yet as I'm trying to figure this out. Avia geometry tests look perfect.


Paul


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Paul B. Musser

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Paul -

Remember, that the lens is not centered on the projector housing, it's about 2+" off-center. The key for positioning is to make sure that the dead center of the lens is also dead center of the top edge of the screen material (if ceiling-mounted). I mounted my projector first, took careful measurements and then used those to position the screen.


This, btw for me, turned out to be different than the initial throw onto the blank wall even though, like you, the geometry from AVIA looked good on the blank wall.


My biggest problem was the piece of crap Sony mount which to this day prevents me from horizontally leveling the projector correctly. I've had to wedge a small piece of cardboard between the ceiling and the projector body to get (and keep) it level. Not pretty, but it works.


Good luck -


... john ...


[This message has been edited by John Bizios (edited 07-13-2001).]
 

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fwiw, when i checked my 10HT with AVIA and the internal test patterns last night,

i found that the geometry grid for the enhanced mode appears to be tilted relative to

the horizontal. (the internal test pattern was level as checked with a level at the screen, while on the avia pattern, the horizontal lines were high on to one side)


lcubed

Quote:
Originally posted by John Bizios:
Paul -

Remember, that the lens is not centered on the projector housing, it's about 2+" off-center. The key for positioning is to make sure that the dead center of the lens is also dead center of the top edge of the screen material (if ceiling-mounted). I mounted my projector first, took careful measurements and then used those to position the screen.


This, btw for me, turned out to be different than the initial throw onto the blank wall even though, like you, the geometry from AVIA looked good on the blank wall.


My biggest problem was the piece of crap Sony mount which to this day prevents me from horizontally leveling the projector correctly. I've had to wedge a small piece of cardboard between the ceiling and the projector body to get (and keep) it level. Not pretty, but it works.


Good luck -


... john ...


[This message has been edited by John Bizios (edited 07-13-2001).]




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Discussion Starter · #7 ·
I worked it out. The lens was dead center but angled just a smidge off center which resulted in 2-3" over 13'. Got it now though.


Paul


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Paul B. Musser

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I guess I'm glad I went with the Peerless mount. It allows adjustment in all three planes.


But, I will post an observation on my installation. I put my projector up in early October 2000 using the Peerless ceiling mount. So my projector has been hanging from the mount for a little over 9 months. When I did the initial installation I verified everything was level and square. Just for the record I installed the mount, installed the projector, turned the projector on to get an image on the wall. Adjusted the zoom to get the image to my most desired size. Then I installed the screen so that the top edge was about 1/2" above the projected image.


Now the point of all this is for about the past month I've noticed that the image is slightly lower on the right side. It's still at the same height on the left edge but maybe less an inch down on the right edge. My screen is a 133" diag 16:9 format. So I'm wondering if the case on the 10HT is deflecting slightly over time. I haven't changed anything else. No adjustments to the mount. The screen hasn't moved. I'm sure I can correct the slope with the Peerless adjustments but I wonder if anyone else has seen this on their projector.


Thanks.


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Stephen Couch
 
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