Long DVI Cable?

Discussion in 'MacBook Pro' started by MarkW19, Feb 13, 2008.

  1. MarkW19 macrumors 65816

    Joined:
    Sep 13, 2002
    Location:
    Surrey, UK
    #1
    I was wondering, is it possible to get quite long DVI cables (20'), and if so, will the quality suffer?

    I want to connect my MBP (2.2 at the mo) up to a 23" Apple Cinema Display, but my MBP will be around 20' away from the monitor...

    I guess I'd need to get an extra male-female DVI, along with some USB/firewire extension leads, as the ACD will come with its own (shorter) breakout cable?
     
  2. MAW macrumors regular

    Joined:
    Apr 29, 2007
    Location:
    Los Angeles
    #2
    Might be pricey but I found this. Don't know about signal degradation but they have 'em as long as 50'
     
  3. MarkW19 thread starter macrumors 65816

    Joined:
    Sep 13, 2002
    Location:
    Surrey, UK
    #3
    Thanks, I guess they're available then. It's M-F I want isn't it, to go from the Apple Cinema Display breakout cable into my MBP? Is it DVI-D or -I I want?

    Does anyone know about signal degradation on long DVI cables?

    And what about FireWire/USB extensions (USB for camera/iPhone dock/keyboard etc., and FW for camcorder and external HD), is it possible to get them, and nothing will slow down or cause any problems as the cable gets longer?

    Thanks :p
     
  4. elmo151 Guest

    Joined:
    Jul 3, 2007
    Location:
    NYC
    #4
    the answer is yes. I have a 20 footer between preamp and plasma tv
     
  5. MarkW19 thread starter macrumors 65816

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    Sep 13, 2002
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    Surrey, UK
    #5
    Thanks. Have you compared the quality with a much shorter cable? Do you think the quality suffers at all? :)
     
  6. David N macrumors member

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    Jan 22, 2008
    Location:
    The Land of Milk & Honey
    #6
    www.monoprice.com

    By far the best prices your going to find for cable. You should have no problem running 20' with it! If monoprice sells it, it's great quality unless otherwise stated ;).
     
  7. MarkW19 thread starter macrumors 65816

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    Sep 13, 2002
    Location:
    Surrey, UK
    #7
    Hi, thanks...but I'm in the UK ;)
     
  8. MarkW19 thread starter macrumors 65816

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  9. AppleMix macrumors newbie

    Joined:
    Feb 14, 2008
    #9
    I've read that it's mostly after 50' where you experience signal degradation..

    In those cases you needs a booster/extender inbetween long lengths of cable.
     
  10. markfc macrumors 6502a

    markfc

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    Sep 18, 2006
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    Prestatyn, Wales, UK
  11. digitalpencil macrumors 6502

    digitalpencil

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    Jul 2, 2007
    Location:
    Manchester, UK
    #11
    As DVI is digital, attenuation (loss fo signal voltage over distance) occurs as the image becomes MPEGed i.e. blocks appear. You'll have seen it before with cable/satellite tv, it happens because of lack of bandwidth/too much info for the distance or pipeline. You should be able to get away without an amp at distances like these but make sure you get a decent cable to ensure the best quality.
     
  12. MarkW19 thread starter macrumors 65816

    Joined:
    Sep 13, 2002
    Location:
    Surrey, UK
    #12
    Great, thanks for the help guys! :)

    How about FW800 and USB 2 - can they be extended over a similar distance with just an extension cable?
     

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