+ Post New Thread
Results 1 to 11 of 11
Hardware Thread, Output From Computer To Plasma Screen Via HDMI in Technical; We have been asked to put up a 42" plasma screen in our Crush Hall to display rolling presentations. We ...
  1. #1

    DaveP's Avatar
    Join Date
    Oct 2006
    Location
    Can't talk now: The mother-ship is calling!
    Posts
    8,304
    Thank Post
    331
    Thanked 1,191 Times in 814 Posts
    Blog Entries
    2
    Rep Power
    1064

    Output From Computer To Plasma Screen Via HDMI

    We have been asked to put up a 42" plasma screen in our Crush Hall to display rolling presentations. We need to be able to push the signal out over a 20 metre HDMI cable. We found this to be problematic, so we put an HDMI equaliser in the line at the plasma TV end of the run. This still does not work. However connecting the cable directly out of the GeForce 7 video card into the input of the HDMI of the plasma [a run of about 2 metres] gives a great picture. We have changed cables and equalisers and still no picture.

    The information I have is that we should be able to push the signal out over a 50 metre cable with the equaliser in line. What else can we try to make this work?

  2. #2

    Geoff's Avatar
    Join Date
    Jun 2005
    Location
    Fylde, Lancs, UK.
    Posts
    11,800
    Thank Post
    110
    Thanked 582 Times in 503 Posts
    Blog Entries
    1
    Rep Power
    223

    Re: Output From Computer To Plasma Screen Via HDMI

    You need a HDMI repeater and/or high quality cabling.

  3. #3

    john's Avatar
    Join Date
    Sep 2005
    Location
    London
    Posts
    10,439
    Thank Post
    1,468
    Thanked 1,035 Times in 908 Posts
    Rep Power
    299

    Re: Output From Computer To Plasma Screen Via HDMI

    I would say cabling issue myself, I would expect you to spend many hundreds of pounds on a HDMI that lenght, judging by the cost of the 3 meter ones!

  4. #4

    Geoff's Avatar
    Join Date
    Jun 2005
    Location
    Fylde, Lancs, UK.
    Posts
    11,800
    Thank Post
    110
    Thanked 582 Times in 503 Posts
    Blog Entries
    1
    Rep Power
    223

    Re: Output From Computer To Plasma Screen Via HDMI

    I'd expect to pay around £150 for a 25m HDMI cable. I'd expect to pay a similar amount for a HDMI repeater.

  5. #5
    PeterW's Avatar
    Join Date
    Nov 2006
    Location
    Portsmouth
    Posts
    745
    Thank Post
    42
    Thanked 65 Times in 60 Posts
    Rep Power
    31

    Re: Output From Computer To Plasma Screen Via HDMI

    Must you use HDMI, I'm sure if you used component and stereo audio over cat 5 it would work out a lot cheaper?

  6. #6

    DaveP's Avatar
    Join Date
    Oct 2006
    Location
    Can't talk now: The mother-ship is calling!
    Posts
    8,304
    Thank Post
    331
    Thanked 1,191 Times in 814 Posts
    Blog Entries
    2
    Rep Power
    1064

    Re: Output From Computer To Plasma Screen Via HDMI

    Quote Originally Posted by PeterW
    Must you use HDMI, I'm sure if you used component and stereo audio over cat 5 it would work out a lot cheaper?
    We tried SVideo on the recommendation of a school in our Consortium and it gave an awful picture. We then chose HDMI because we had a compatible card in the computer and cables and a compatible input in the plasma. However that does not mean we are not open to other ideas.

  7. #7
    amcevoy's Avatar
    Join Date
    May 2007
    Location
    Burnley
    Posts
    35
    Thank Post
    0
    Thanked 1 Time in 1 Post
    Rep Power
    0

    Re: Output From Computer To Plasma Screen Via HDMI

    How about putting the computer a lot nearer to the screen and using a KVM extender (e.g. Daxten Voyager Micro) to control the PC? Presuming the PC is networked and thats how it is going to access your rolling presentations. Or you could use a really powerful wireless keyboard and mouse.

  8. #8
    MicrodigitUK's Avatar
    Join Date
    May 2007
    Location
    Wiltshire
    Posts
    309
    Thank Post
    33
    Thanked 51 Times in 47 Posts
    Rep Power
    23

    Re: Output From Computer To Plasma Screen Via HDMI

    Has the plasma screen got a standard VGA input? I use a 20m VGA cable and a stereo audio cable to my screen because it worked out cheaper than a long HDMI and still gives a high definition image on the screen. I don’t know the max length you can have VGA though?

    Also you can get VGA and stereo cable to CAT 5 RJ45 adapters to run the signal down a standard network cable with an adapter at each end of the cable! Although some are very expensive, have a look at this one:

    http://cpc.farnell.com/jsp/search/pr...sp?sku=CS10933

    or

    http://cpc.farnell.com/jsp/level5/mo...cpc/436786.xml


  9. #9

    DaveP's Avatar
    Join Date
    Oct 2006
    Location
    Can't talk now: The mother-ship is calling!
    Posts
    8,304
    Thank Post
    331
    Thanked 1,191 Times in 814 Posts
    Blog Entries
    2
    Rep Power
    1064

    Re: Output From Computer To Plasma Screen Via HDMI

    Thanks for all of the suggestions. We now have it running over a 10 metre HDMI cable [no HDMI repeater or equaliser required!]

    This is not ideal, as the keyboard and mouse are within the range of students, and I feel sure that one of them will attempt some kind of interference at some stage. That aside I have noticed a shadow developing on the screen. Is this akin to screen burn-in? It certainly looks like it. What I am hoping is that it is not permanent and if we 'rest' the screen will it go away, but I would like to ask if anyone knows the truth of this could they post a reply A.S.A.P.

    Thanks.

  10. #10

    Geoff's Avatar
    Join Date
    Jun 2005
    Location
    Fylde, Lancs, UK.
    Posts
    11,800
    Thank Post
    110
    Thanked 582 Times in 503 Posts
    Blog Entries
    1
    Rep Power
    223

    Re: Output From Computer To Plasma Screen Via HDMI

    Is this a consumer grade plasma screen? or an industrial one? how long have you had it?

  11. #11

    DaveP's Avatar
    Join Date
    Oct 2006
    Location
    Can't talk now: The mother-ship is calling!
    Posts
    8,304
    Thank Post
    331
    Thanked 1,191 Times in 814 Posts
    Blog Entries
    2
    Rep Power
    1064

    Re: Output From Computer To Plasma Screen Via HDMI

    Quote Originally Posted by Geoff
    Is this a consumer grade plasma screen? or an industrial one? how long have you had it?
    Yes it is one that you might buy for home. It is a Philips FlatTV. We have had it about 2 months.

SHARE:
+ Post New Thread

Similar Threads

  1. Replies: 7
    Last Post: 14th December 2007, 10:38 AM
  2. Plasma Display Screens
    By cooper in forum How do you do....it?
    Replies: 3
    Last Post: 22nd May 2007, 09:16 AM
  3. plasma display
    By cooper in forum Recommended Suppliers
    Replies: 3
    Last Post: 21st May 2007, 02:41 PM
  4. Showing output from 4 computers on 1 screen
    By srochford in forum Hardware
    Replies: 8
    Last Post: 20th March 2007, 05:02 PM
  5. PLASMA DISPLAYS
    By alan-d in forum How do you do....it?
    Replies: 15
    Last Post: 20th September 2005, 11:18 AM

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •