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Optoma HD65 modeline
http://forums.linhes.org/viewtopic.php?f=2&t=19108		 Page 1 of 1
Author:  tama102 [ Thu Oct 16, 2008 7:40 am ]
Post subject:  Optoma HD65 modeline
Just picked up an Optoma HD65 projector, I have it going from my Nvidia 6200 graphics card through DVI via a conversion cable of DVI to HDMI. Just wondering if anyone else out there has this projector or a similar 720p projector. Just tried to find some good custom modelines for this projector with no luck. Anyone have this projector? If so, what modeline are you using through HDMI? I would love to pixelmap. Thanks.
Author:  neutron68 [ Sat Oct 18, 2008 8:50 am ]
Post subject:  not exactly the same, but somewhere to start?
I made a modeline for my friend's Mitsuibishi 1280x768 projector. I see yours is a 1280x720, so it's not exactly the same, but close.

Here are the modelines I tried during the tweaking process. You can tweak an existing modeline to get what you need for 1280x720.

I started with the 720p modelines from this page:
http://www.mythtv.org/wiki/index.php/Modeline_Database

I also used a modeline calculator llike this:
http://xtiming.sourceforge.net/cgi-bin/xtiming.pl
to get me close to a correct custom value, and then started altering values until I got the image to fit on the imaging chip in the projector.

You can tell from the list, that I would tweak one value, restart xorg, look at the results and then tweak another value, etc.
I settled on version "s" at the bottom of the list.
Code:
    ModeLine       "ATSC-720-59.94p" 74.2 1280 1320 1376 1650 720 722 728 750 -hsync -vsync
    ModeLine       "ATSC-720-60p" 74.2 1280 1320 1376 1650 720 722 728 750 -hsync -vsync
    ModeLine       "1280x768-a" 79.5 1280 1344 1472 1664 768 771 778 798 -hsync -vsync
    ModeLine       "1280x768-a1" 79.59 1280 1344 1472 1664 768 771 778 798 -hsync -vsync
    ModeLine       "1280x768-c" 80.14 1280 1344 1480 1680 768 769 772 795 -hsync -vsync
    ModeLine       "1280x768-b" 129.859 1280 1368 1504 1728 768 769 772 814 -hsync -vsync
    ModeLine       "1280x768-d" 81.0 1280 1344 1480 1680 768 769 785 795 -hsync -vsync
    ModeLine       "1280x768-e" 81.59 1280 1280 1384 1688 768 769 774 791 -hsync -vsync
    ModeLine       "1280x768-f" 79.5 1280 1360 1488 1664 768 771 778 798 -hsync -vsync
    Modeline       "1280x768-g" 79.5 1280 1360 1488 1672 768 771 778 798 -hsync -vsync
    Modeline       "1280x768-h" 79.5 1280 1360 1488 1680 768 771 778 798 -hsync -vsync
    Modeline       "1280x768-i" 79.5 1280 1360 1488 1688 768 771 778 798 -hsync -vsync
    Modeline       "1280x768-j" 79.5 1280 1376 1504 1688 768 771 778 798 -hsync -vsync
    Modeline       "1280x768-k" 79.5 1280 1376 1504 1696 768 771 778 798 -hsync -vsync
    Modeline       "1280x768-l" 79.5 1280 1376 1504 1702 768 771 778 798 -hsync -vsync
    Modeline       "1280x768-m" 81.4 1280 1376 1504 1702 768 771 778 798 -hsync -vsync
    Modeline       "1280x768-n" 81.13 1280 1376 1504 1696 768 771 778 798 -hsync -vsync
    Modeline       "1280x768-o" 81.5  1280 1376 1504 1704 768 771 778 798  -hsync -vsync
    Modeline       "1280x768-p" 81.9  1280 1376 1504 1712 768 771 778 798  -hsync -vsync
    Modeline       "1280x768-q" 82.27 1280 1376 1504 1720 768 771 778 798  -hsync -vsync
    Modeline       "1280x768-r" 82.65 1280 1376 1504 1728 768 771 778 798  -hsync -vsync
    Modeline       "1280x768-s" 83.05 1280 1376 1504 1736 768 771 778 798  -hsync -vsync

Eric
Author:  tama102 [ Sat Oct 18, 2008 10:20 am ]
Post subject: 
Cool, thanks.

Also, what image did you use to tell if the image was fitting on the projector's image chip? How do you do this?
Author:  neutron68 [ Sat Oct 18, 2008 3:04 pm ]
Post subject:  test patterns
I used the 1280x720 test pattern from here:
http://www.tigerdave.com/test_patterns.htm

specifically:
http://www.tigerdave.com/images/testpat ... erscan.gif

I put the test pattern into the Mythtv Image Gallery and then brought up the image so it was full screen. Then, I kept changing the modeline variables until all 4 corners were on the screen.
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