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HS20, PC and HDTV resolution any ideas?

Discussion in 'Projectors, Screens & Video Processors' started by lkt, Mar 12, 2005.

  1. lkt

    lkt
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    Has anyone managed to get their HS20 working at 1900x1080?

    My ATI Radeon will output 1900x1080 through the dvi (dvi in on hs20) but the HS20 says the signal is out of range. Im trying 60hz refresh rate.

    Does anyone know if this is possible or if we're stuck to 1280x720?


    Cheers, LKT
     
  2. Kopite4Ever

    Kopite4Ever
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    correct me if im wrong but you may want to try 1980 x 1080 if your going for 1080i high definition signal. maybe the HS20 will pick that up ?
     
  3. MikeK

    MikeK
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    It's 1920x1080, and at that resolution it's interlaced (hence the 1080i monicker).

    However, IIRC (could be wrong though), the max resolution of the DVI output on most ATI cards is 1600x1200, so it may be a non-starter.

    You could also try 1388x768 (which I think is the native resolution of the PJ, ie a 1:1 map if you get it right) if the driver will let you - that way a 1080i source is only scaled once, by the PC. If you set for 1280x720, then the PC will scale the 1080 source to 720, only for the HS20 to scale it back up to 768 for display (or else show it with black bars). The difference could be very marginal though - and reading other people's experiences of 1:1 mapping, it's often not as straightforward as it seems.

    Oh the endless fun of video resolutions :) :)
     
  4. Kopite4Ever

    Kopite4Ever
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    mike is right its 1920. i just knew the 1900 was wrong. as he says 1:1 mapping will be your best bet
     
  5. lkt

    lkt
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    Thanks guys for your help, I'll give it a go. Does anyone know which mode the projector should be in - e.g. DVI Computer or something else?
     
  6. Mr.D

    Mr.D
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    You can feed HD type resolutions into the HS20 but I think it might only be the component input that handles this. I dabbled with sending HD resolutions via componenet from my HTPC with a componenet dongle . It worked and HD material looked quite nice but everything else was very soft and the colours were a little lacklustre.

    I mainly use 1368x768 @ 56Hz to get the maximum 1:1 usage of the panel. I also use a 1280x768 resolution at 60Hz for NTSC video originated material and Xbox at 60Hz because otherwise it will stutter. ( culls 4 frmes every second) PAL and film originated NTSC work fine at the 1368x1556 56Hz display though.

    You can alos feed some 50Hz resolutions but I never bothered.
     
  7. homethx

    homethx
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    is this figure correct ?
     
  8. Mr.D

    Mr.D
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    1368x768 my apologies.
     

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