Coax cable length

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Tim Maddoux

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Coax cable length

PostTue Mar 14, 2017 5:24 pm

Greetings all.

I am equipping our road crew with the ability to send a 1080 60p video feed from front of house to a venues video room for IMAG.
Path is from an HDMI source (laptop) to HDMI/SDI Mini converter to SDI/HDMI mini converter to venues video input.

My question is: using the highest quality coax, what would be my max cable length?

Thanks for the help!

Tim
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Tran Tuan

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  • Joined: Wed Mar 15, 2017 8:02 am

Re: Coax cable length

PostWed Mar 15, 2017 8:26 am

It gives a distance of 150m is Video good signal
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Tim Maddoux

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Re: Coax cable length

PostWed Mar 15, 2017 3:49 pm

Tran,

Thank you so much for the reply.

I'm assuming you gave a spec for the converter. Correct?
Can you tell me where you found that.
I can't seem to locate it.

Again thank you!

Tim
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BenWorkman

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Re: Coax cable length

PostThu Mar 16, 2017 2:13 am

This is Belden's chart for all their different cable type and transmission distance (depending on if 3G, 6G, or 12G is needed), and SDI is nice that if you do need extra length, just reclock it and keep going.

https://www.belden.com/docs/upload/Reco ... _Chart.pdf

Edit: A quick question-- just for my own curiosity-- but you're feeding a laptop to the side venues IMAG screens? Is a more lag-free camera/audio source not available to go over the SDI?
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Tim Maddoux

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Re: Coax cable length

PostThu Mar 23, 2017 6:42 pm

Hi Ben!

Sorry for just now replying.

We are going into different venues (Performing arts centers, Churches, Theaters) and playing pre-produced videos before, during and after an event so lag-time is not a concern.

Thanks for the info.

Tim
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BenWorkman

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Re: Coax cable length

PostSat Mar 25, 2017 3:21 pm

Tim Maddoux wrote:Hi Ben!

Sorry for just now replying.

We are going into different venues (Performing arts centers, Churches, Theaters) and playing pre-produced videos before, during and after an event so lag-time is not a concern.

Thanks for the info.

Tim


Ah- makes more sense. If lag is no problem, moon is the limit, as long as you use high quality cable/connectors and reclock/distribution amp every few hundred feet (following the bElden chart).

Good luck to you!
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Xtreemtec

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  • Location: The Netherlands

Re: Coax cable length

PostSat Mar 25, 2017 4:02 pm

BenWorkman wrote: If lag is no problem, moon is the limit,

https://en.wikipedia.org/wiki/Earth%E2% ... munication :D :D :lol:
Moon Bouncing the signals.. Just 2,4 Second delay :P
Daniel Wittenaar .:: Xtreemtec Media Productions ::. -= www.xtreemtec.nl =-
4K OBV, ATEM TVS HD, Production Studio 4K, 2M/E Broadcast Studio 4K, Hyperdeck Studio, SONY FS7 4K, JVC HM700 Full HD Camera
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Scott Smith

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Re: Coax cable length

PostSat Apr 01, 2017 2:50 am

Xtreemtec wrote:https://en.wikipedia.org/wiki/Earth%E2% ... munication :D :D :lol:
Moon Bouncing the signals.. Just 2,4 Second delay :P


Two thumbs up. I get more delay than that on some hardware.
Scott R Smith
BMD Stuff I use: ATEM 2-M/E, 4 x ATEM PS 4K, Broadcast Videohub, 6 Hyperdeck Pros, 4 Hyperdeck Shuttles, Multidock, Smartscope Duo, Smartview, Intensity Extreme, Decklink Studio, and lots of Miniconverters and Open Gear Converters.

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