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incova
Joined: 27 Nov 2006
Posts: 789
Location: london
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 Link Posted: Thu Jul 08, 2010 10:26 pm Post subject: HTPC Astigmatism test patterns |
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Hey gents not sure if this is the correct section to post this in but I will give it a go, I need some test patterns for astigmatism the H pattern and dot pattern are the ones I am looking for. Chip told me to use a external test pattern generator to do the astigmatism on my 4600, my generator has broken down I had a nice Quantum Data but now its dead when I need it typical.
I am assuming I can use my HTPC as a test pattern generator? So, anyone got some tets patterns I can have?
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MikeEby
Joined: 24 Jun 2007
Posts: 5238
Location: Osceola, Indiana
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| Link Posted: Fri Jul 09, 2010 12:52 am Post subject: |
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I wrote one a couple of years ago I use the Resolution pattern to set focus and cross hatch for convergence. It currently does not have dot pattern. 
The 1 line on 1 line off (Resolution), works good for checking the performance of your video chain.
Download Here!
Hotkeys:
S – double click Shows setup dialog box or
Page Up – Increase line intensity
Page Down – Decrease line intensity
R – Toggles Red on/off
G – Toggles Green on/off
B – Toggles Blue on/off
C – Toggles Center circles on/off
N – Toggles Corner circles on/off
D – Toggles Diagonal lines on/off
Esc – Exits program
Mike
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incova
Joined: 27 Nov 2006
Posts: 789
Location: london
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| Link Posted: Fri Jul 09, 2010 1:44 am Post subject: thanks |
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Thanks Mike, this will be usefull anyway I have to admit its tough to get one for astig! 
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CZ Eddie
Joined: 23 Mar 2006
Posts: 1601
Location: Austin, TX
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| Link Posted: Fri Jul 09, 2010 2:39 am Post subject: |
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The Phillips Test Pattern generator has a dots test screen. I've attached it to this post.
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incova
Joined: 27 Nov 2006
Posts: 789
Location: london
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| Link Posted: Fri Jul 09, 2010 2:48 am Post subject: cool! |
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Thanks so much man, it has the H pattern as well! 
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incova
Joined: 27 Nov 2006
Posts: 789
Location: london
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| Link Posted: Fri Jul 16, 2010 2:02 am Post subject: hi again |
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I am using the programs but the h pattern and the dots just do not seem to be as bright or as useful to use as the internal patterns, you cannot use the dots to do astig as I cannot see the changes, should I use a extron unit which I have to give the HTPC signal a little boost or set the Ampro to boost the light output? Has anyone used this method for astig ?
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cinema mad
Joined: 25 Nov 2009
Posts: 219
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| Link Posted: Thu Sep 30, 2010 3:15 pm Post subject: |
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Not that I am an authority on setting/optimizing astig, but since you asked
I have only ever used the internal test patterns in the projector to optimize Astig with good results
but centering the adjustments in the projector first..
Cheers...
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