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Very Long Audio Visual Cable Required

Discussion in 'Cables & Switches' started by tomdbomb, Jul 25, 2005.

  1. tomdbomb

    tomdbomb
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    Hi All,
    I need to run some sort of AV cable whether it be SCART or anything else from a camcorder to a screen with distance of between 80-120metres away. I've never done anything like this before & am wondering would anybody know how to best go about it? What equipment I will need?

    Kind Regards,

    Tom :thumbsup:
     
  2. Joe Fernand

    Joe Fernand
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    Hello Tom

    Is this a permanent install?

    Internal or external?

    What's going on around the cable?

    What kit are you trying to connect?

    Video Only or Video + Audio?

    Best regards

    Joe
     
  3. BDCSTENG GARETH

    BDCSTENG GARETH
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    :lesson: you need high quailty cable - doesn't have to be expensive, but technically sufficiant for the job (broadcast spec install cables are the way to go).

    For video, If you want analogue companant, I would suggest you buy MVC333 from Bryant broadcast (google search will do you) not as expensive as others will recomend, but will be better. This is the industry standard 75ohm vid cable, good for 100m. External installation will require conduit if you a long time... The only issue is that you need to EQ video (analogue only) before you send it that far. the easiest way is to get a cheap, 2nd hand EQ-DA. These units basically DA video, but have a couple of tweeks to pump up the signal for the distance. You must do this when sending, not recieveing otherwise you will be amplifying noise aswell as the video signal. SDI would be simpler, but more expensive.

    Audio- only one way to go... Balanced line! :eek:

    You need boxes sending and recieving to create a balanced circuit over the distance to filter out noise...

    Do you have money?????

    SDI with embedded AES audio...

    4:2:2 Digital componant video with up to 8 audio tracks ontop.

    But muuuchooo ££££££!!!!! :smashin:
     
  4. Joe Fernand

    Joe Fernand
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    BDCSTENG GARETH

    You may be pleasantly surprised to note that many on the Forums are well up on using 'Broadcast' cables and techniques.

    VanDamme and Belden are used by a lot of AVForums members in preference to some of the high cost 'boutique' cable brands.

    You'll have Forum members falling of their PC chairs if your suggesting using Broadcast DA's and the like - Kramer Electronics is deemed expensive by many whilst looked upon as low cost in the Broadcast market :)

    Best regards

    Joe
     
  5. Nic Rhodes

    Nic Rhodes
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    why not use baluns and Cat 5?
     
  6. BDCSTENG GARETH

    BDCSTENG GARETH
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    I wasn't suggesting that people are not... but a run of HQ A/V long distances deserves a look into higher end techniques, and maybe the 5 pence worth from an experienced engineer who is trying to give some alternative options... 120M is not common garden demestic requirements!

    I specified a company and specific cable for which I would recommend... Im sure AVforums members are well up on the mainstream cables, but again, just suggesting alternatives!

    Kramer electronics? I didn't specify them...

    I suggested analogue EQ DAs as they prepare for long distance propagation... they dont have to be expensive, if you know where to get them!


    Rgds,

    Gareth.
     
  7. Joe Fernand

    Joe Fernand
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    Hello BDCSTENG GARETH

    I mentioned Kramer as possibly a brand you were aware of and the 'relatively' low cost of the Kramer kit - in terms of Broadcast budgets.

    Be prepared for some sharp intakes of breath if your suggesting anything over £50.00 for signal distribution :)

    I'm with you on using proper techniques and products!

    Best regards

    Joe

    PS Where's tomdbomb gone?
     
  8. nickshore

    nickshore
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    For distribution over cat5, have a look at the kat5 range of products - www.kat5.tv

    They work brilliantly, and Keith Doxey, who designs them is very helpful, in my experience.

    Nick.
     

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