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JorisS
Joined: 18 Jun 2007
Posts: 160
Location: Uppsala, Sweden
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| Posted: Thu Feb 11, 2010 6:44 pm Post subject: Sorting out input signal to NEC XG110LC |
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Hi all,
as per Mark's suggestion I was trying to feed 1080i @ 96Hz to my NEC last weekend - unfortunately this caused a scrambled image; with 1080i 30Hz I get a decent picture, text looks small but fine and readable.
First three pics are at the custom res/timings I pasted from Marks settings, the latter three are at 1080i 30Hz:
Image is much worse with the custom timings than at 30Hz, so I'm wondering if that's cause every PJ is one of a kind or if perhaps I have to tune things somewhere. Unfortunately I'm very poor at home with this and wouldn't have a clue where to begin.
For reference I'm using the Moome latest HDMI internal card, bought it just around X-mas when they were sold off cheaper. HTPC has the Gigabyte GA-MA785GT-UD3H motherboard with onboard ATI HD4200 graphics card. Using the latest Catalyst drivers from AMD/Ati homepage, and running image directly from HDMI to HDMI (motherboard has onboard HDMI output).
I guess one could play around with this for ages and try to get things optimized once the understanding of settings increases, the issue now is that I want to ceiling mount the pj so would want to discern the right positioning, so I'll be using phosphor properly and filling the screen. I checked on tubes and between the 30Hz and the custom timings it definitely appears to affect phosphor usage, so I guess I should really try and set up the correct settings at once?
Best regards
//Joris
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MikeEby
Joined: 24 Jun 2007
Posts: 5237
Location: Osceola, Indiana
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| Posted: Thu Feb 11, 2010 6:50 pm Post subject: |
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I would not be 100% sure a Moome card can handle 1080i 96Hz....What happens when you connect the projector with RGBHV?..With an HTPC a Moome card is not needed, unless your trying to use HDMI for audio, the onboard 4XXX can't pass multichannel LPCM, only DD/DTS core, for that you might as well use SPDIF, I use analog myself for audio and video.
Mike
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Doing HD since the last century!
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JorisS
Joined: 18 Jun 2007
Posts: 160
Location: Uppsala, Sweden
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| Posted: Thu Feb 11, 2010 7:04 pm Post subject: |
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| MikeEby wrote: | I would not be 100% sure a Moome card can handle 1080i 96Hz....What happens when you connect the projector with RGBHV?..With an HTPC a Moome card is not needed, unless your trying to use HDMI for audio, the onboard 4XXX can't pass multichannel LPCM, only DD/DTS core, for that you might as well use SPDIF, I use analog myself for audio and video.
Mike |
Dang...
And thinking I already had a Moome DVI card, that's a waste of money on the HDMI one then. Thing is that I was planning to just feed simple signal from one of these popcorn-hour like mediaboxes, hence I decided to get a HDMI card when they were on sale around Christmas. But was advised against mediabox and go with HTPC or VP instead after...
Ah well... I think I might have an VGA -> RGBHV cable lying around, could give that a try and see how it works out. Could try the DVI as well.
Alternatively, how 'bad' is it to run at 30Hz? Does 96Hz (provided it works correctly) give a significant improvement on image, or is it recommended from other perspectives such as strain on the pj's components and such?
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MikeEby
Joined: 24 Jun 2007
Posts: 5237
Location: Osceola, Indiana
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| Posted: Thu Feb 11, 2010 7:10 pm Post subject: |
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| JorisS wrote: | | MikeEby wrote: | I would not be 100% sure a Moome card can handle 1080i 96Hz....What happens when you connect the projector with RGBHV?..With an HTPC a Moome card is not needed, unless your trying to use HDMI for audio, the onboard 4XXX can't pass multichannel LPCM, only DD/DTS core, for that you might as well use SPDIF, I use analog myself for audio and video.
Mike |
Dang...
And thinking I already had a Moome DVI card, that's a waste of money on the HDMI one then. Thing is that I was planning to just feed simple signal from one of these popcorn-hour like mediaboxes, hence I decided to get a HDMI card when they were on sale around Christmas. But was advised against mediabox and go with HTPC or VP instead after...
Ah well... I think I might have an VGA -> RGBHV cable lying around, could give that a try and see how it works out. Could try the DVI as well.
Alternatively, how 'bad' is it to run at 30Hz? |
I don't know 100% the Moome won't work....Analog would be the first thing I would try...with 96 hz you get very smooth motion on film based material, no 3:2 pulldown judder...Some people it doesn't bother...it drives me nuts. DVI will be the same as HDMI.
Mike
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Doing HD since the last century!
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JorisS
Joined: 18 Jun 2007
Posts: 160
Location: Uppsala, Sweden
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| Posted: Thu Feb 11, 2010 7:13 pm Post subject: |
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Thanks for the suggestion. Will be able to try tomorrow evening, for some reason decided to sell the AMD rig and get an Intel package instead, processor last to come and should pop in tomorrow. Will then also be running from a HD4350 instead as the motherboard doesn't have onboard graphics. Shouldn't make much of a difference PC-side though, I reckon.
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MikeEby
Joined: 24 Jun 2007
Posts: 5237
Location: Osceola, Indiana
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| Posted: Thu Feb 11, 2010 8:08 pm Post subject: |
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| JorisS wrote: | | Thanks for the suggestion. Will be able to try tomorrow evening, for some reason decided to sell the AMD rig and get an Intel package instead, processor last to come and should pop in tomorrow. Will then also be running from a HD4350 instead as the motherboard doesn't have onboard graphics. Shouldn't make much of a difference PC-side though, I reckon. |
Actually the HD4350 should do LPCM over HDMI, it will be downsampled if your using PowerDVD, with FLAC it should be bit perfect... Just the PC is decoding, not your AVR.
Mike
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