Attempting to use OSSC on SD CRT TV. Has scrolling issue.

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  • #48965
    Paranoid_Andy
    Participant

    I’m curious to see how the OSSC looks on my JVC I’Art SD CRT and to use some of its advanced features with it.

    I can mostly get it working, the picture shows up but the screen scrolls vertically rapidly and I’m not sure how to get it to stay put.

    My setup is: NES, SNES, Genesis etc. RGB consoles with scart cables -> OSSC -> HD Fury 2(HDMI to VGA adapter) -> VGA to Component plug on HD Fury -> TV

    Any ideas?

    Thank you in advance for any help!

    #48967
    BuckoA51
    Keymaster

    Are you sure your CRT supports progressive scan?

    #48969
    Paranoid_Andy
    Participant

    Hey Bucko,

    As far as I know it should, if I understand how progressive scan works that is.

    I normally use a scart to component converter and play that way without issue, but I was exploring options to make the black horizontal bars”scanlines” thicker as that is my end goal.

    I was gonna link a page with the specs but couldn’t find any. It’s an AV-27WF35.

    Hope you’re doing well man! Always nice to see you around.

    *Edit*
    I did find the manual online. It seems to indicate it won’t accept a 31KHz signal but I was thinking maybe that was for a 480p signal, not 240p. I should mention too, the TV picks up ‘passthrough’ mode and ‘line2x’. I was thinking the OSSC outputs 15KHz in passthrough mode, but maybe I’m wrong about that?

    #49005
    BuckoA51
    Keymaster

    480p is always 31khz, 240p and 480i is always 15khz

    In passthrough mode the OSSC outputs whatever is input, so if you are feeding it a 15khz signal that’s what comes out. I can confirm the HD Fury Nano and HDFURY X3 both pass through 240p OK so I don’t see why the 2 wouldn’t.

    You can’t really do anything useful to a 240p image that’s just passed through, it’s more for people who want to use OSSC on multisync monitors, or purely as a transcoder, and probably won’t do anything useful for someone using a 15khz only set.

    #49010
    Paranoid_Andy
    Participant

    Ah okay. I was hoping to try out the scanlines a bit. I’ll have to look into other options.

    Thanks for the info Bucko!

    #49011
    BuckoA51
    Keymaster

    You should already have scanlines on a CRT connecting the consoles directly.

    #49017
    Paranoid_Andy
    Participant

    Oh I definitely do! I just wanted to make the black lines bigger 😛

    #49020
    Fed
    Participant

    Then you need a CRT with a higher « resolution » tube. 😉

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