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Bendy top - Barco 701s

Discussion in 'Projectors, Screens & Video Processors' started by Mr Cinema, Feb 1, 2003.

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  1. Mr Cinema

    Mr Cinema
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    Apologies if this has been covered before. I did a search on this forum and couldn't find anything so...

    How can I cure a slight bend on the top of my picture? It's only really noticable on end credit crawls. It doesn't appear to be a geometry setting as a genlocked pattern appears to be straight.

    I have synch set to fast, although changing it to slow doesn't seem to cure it. Kit is Denon 2800Mk2 into IScan pro outputting RGBs.

    Any suggestions gratefully received.

    Cheers!
     
  2. Roland @ B4

    Roland @ B4
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    This is something that the 700 series were not good a sorting.
    It might be worth trying the Iscan set to Sync on green which is done with a jumber inside. (the 701s will auto detect leave it on input 3).
    Actually before you do that pulll the green lead from the back of the projector incase a weak sync sync is coming down the green and the sync and confusing the projector

    You have already tried the only sync adjustment you have on the projector.
    If your vertital raster shift settings are at their maximum at might make it worse.

    Play with the Make sure the Hphase doesn't affect it but I'm clutching at straws there.

    I think the only thing worth trying after that is an interface box which will sort the syncs out.
     
  3. Mr Cinema

    Mr Cinema
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    Thanks very much for that. I'll give it a try.

    I'm actually using input 4, which the projector tells me is RGBs.

    I'll check input 3, and see if that doesn't cure it. Pesky CRT! There's always another variable you hadn't thought of.

    :)
     
  4. Roland @ B4

    Roland @ B4
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    Input 4 is designed for high definition TV with Tri level sync. Not something you are likely to see in the domestic market.

    I think you have your answer, input 3. but pull the green lead from the projector. The image should keep working (red and Blue). If it goes blank then reconnnect the green and pull the sync lead off.

    701s inputs

    1= composite video
    2= S-Video
    3= RGB sep sync and RGB sync on green
    4= RGB trilevel sync for HDTV
    5= Component video
    6 Component tri level sync HDTV

    You can still use 91, 92, 93 etc to give additonal settings
     
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