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Archive 2013 · Long Video Cables?
  
 
Csae
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p.1 #1 · Long Video Cables?


Anyone have any experience propagating a video signal over long distances ? Preferably on the cheap ?

I found a VGA to CAT adaptor...

http://www.ebay.ca/itm/2-x-VGA-Extender-Extention-over-66FT-30M-CAT5-CAT6-RJ45-Cable-Adapter-Connector-/151057042717?pt=US_Video_Cables_Adapters&hash=item232bb38d1d

Along with a 30' CAT6 cable...

http://www.ebay.ca/itm/30-ft-CAT6-Network-Ethernet-Patch-Cable-XBOX-PS3-30-feet-GIGABIT-500MHz-Black-/300885859609?pt=US_Ethernet_Cables_RJ_45_8P8C_&hash=item460e31dd19

Would the signal be too poor? Could i then use a CAT splitter to drive both the monitor and projector at the same time ?

http://www.ebay.ca/itm/RJ45-Cat-5-6-Ethernet-Splitter-Connector-Adapter-/141008657536?pt=US_Networking_Splitters_Couplers_Adapters&hash=item20d4c55c80

I've tried a VGA splitter but i guess the cheap cable is too cheap as it made the monitor unbearably fuzzy, i've also been warned to stay away from long VGA cables without an amplifier but that would bump the overall price quite a bit.

Any input would help, i just need to drive the secondary monitor and the projector with the same HD signal preferably.



Aug 14, 2013 at 04:55 PM
Hammy
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p.1 #2 · Long Video Cables?


Conflicting information...

VGA is technically defined as 640x480 resolution, but at the end you say you want HD, two completely different animals. And as HD, are we talking 720 or full 1080?

You also say over long distances, but you're only talking about 30ft cables?

And then you're talking about splitting the signal on secondary monitor AND projector. So is this a triple display system, with the secondary and tertiary monitor mirrored. Also, are the 2nd monitor AND projector some distance away, or is secondary local and projector is remote?

Finally, you say "on the cheap" and HD in the same post...


I've driven multiple monitors and remote projectors hundreds of feet away with good quality VGA cables and quality splitter (not just vga splitter cable) - but I've not pushed HD over those distances because I haven't used HD projectors.

You're ebay solution will be very poor and susceptible to all kinds of interference. Normal VGA cables are shielded, whereas the CAT6 cable is only twisted.
http://en.wikipedia.org/wiki/VGA_connector#Cable_quality

To push HD signal (sans audio), you'll want a splitter capable of >388Mhz such as this:
http://www.amazon.com/Monoprice-2-Way-Splitter-Amplifier-Multiplier/dp/B001UW7YDS
And then quality, shielded cables like:
http://www.amazon.com/Tripp-Lite-P500-100-Extension-100-Feet/dp/B000E6NN9A/ref=sr_1_9?s=pc&ie=UTF8&qid=1376524977&sr=1-9
which is Male <-> Female, but if you need Male <-> Male:
http://www.amazon.com/Tripp-Lite-P502-100-Extension-100-Feet/dp/B000LZIUXI/ref=pd_sim_sbs_pc_1

So instead of a $15 attempt, a good solution would be only $60.



Aug 15, 2013 at 12:07 AM
Csae
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p.1 #3 · Long Video Cables?


Awesome! You waded through my unclear mess of information!

Yes, ultimately i need 720p from 1 source, to 2 displays, i used 30' so as not be too ambitious about the cost but at 60$ with an amplifier thats still pretty reasonable.

That amplifier looks alot more reasonable than what i had seen (200$+, which is why i threw in the "cheap" part).

Thanks alot for sharing! This looks like it should cover me perfectly.

Is there a way to tell which VGA cables are properly shielded? I see mentions of "ferrites cores" ?

http://www.bhphotovideo.com/c/product/632891-REG/Comprehensive_HD15P_P_50ST_50_15_2_m_Standard.html

http://www.bhphotovideo.com/c/product/897938-REG/pearstone_vga_a350_50_premium_vga_male.html

Can't really tell the difference between the two... I suppose both should be fine ?

I found a couple amplifiers that are 350mhz, since i'm not going long distances would the 50mhz difference be noticeable ? is it like a cutoff or more of a distance thing ?



Aug 15, 2013 at 12:18 AM
Hammy
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p.1 #4 · Long Video Cables?


If you're only pushing 50ft and 720p, you should be fine with either cable and 350Mhz amps.

I've pushed a couple hundred feet with 350Mhz amps, only 800x600 resolution, but with well shielded cables (that also have ferrite coils)



Aug 15, 2013 at 05:52 PM





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