HDMI over CAT6 problems

Discussion in 'Projectors, Screens & Video Processors' started by Ignorant Bliss, May 5, 2016.

  1. Ignorant Bliss

    Ignorant Bliss
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    Hi there, I wonder if anybody can help, we have a couple of problems but the solution may be the same or both?

    We are a church that want to display images from a laptop and video camera.

    issue 1 - We have recently installed 2 x wall mounted UST vivitek projectors, utilising HDMI over cat 6. distances are roughly 15 metres and 25 metres respectively. We also have installed 2 x further cat 6 data points to allow for monitoring at a lecturn, again distances are around 20, and 30 metres. We purchased a 10" liliput screen for the monitor. The laptop connects to and hdmi splitter (2 metre cable) and then goes via .5metre cables into the respective CAT6 extenders. The problem is that the proejctors work fine, but the liliput screen does not, it displays no signal, not matter the resolution of the laptop. We have replaced the HDMI splitter, to no effect, we have tried another liliput screen, again to no effect. we have replaced all hdmi cable, again no effect. What do you think may be causing this issue? liliput have not been able to help.

    issue 2 - We also have an overflow room, which we would like use to live monitor a service from the main church. We have a brand new LG 4k 60" TV, a Canon LEGRIA HF66 video camera, and again are using HDMI over cat 6 extenders. This simply does not display anything. If we go directly from the video camera HDMI into the TV, it works and displays that the signal is 1080p @ 60Hz. As soon we introduce the CAT6 extenders (even with just a 1 metre cat6 cable), the image does not display, even though they are supposed to support the resolution.

    in both installations we are using Esynic CAT6 extenders - HDMI Extender, Esynic 1080P 60m HDMI Extenders HDMI: Amazon.co.uk: Electronics

    Would we benefit from more expensive HDMI extenders? Why do you think they may be failing in some instances but not others?

    Thanks for your help in advance

    Chris
     
  2. andy1249

    andy1249
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    Issue 1
    Lilliput screens are non standard native resolutions using " intelligent scaling" to show whatever signals reach it.

    Splitters on the other hand, need a common standard native resolution between the monitors its attached too in order to set itself up to both screen types.

    As the lilliput doesnt have a standard native resolution, its not going to work with any splitter out there.

    Issue two , there are very few extenders on the market that will work with 4k screens at the moment.
    Again the issue is native resolution, the hdmi handshake asks for the native resolution, the 4k TV answers with 3840 x 2160 ... To your esync extenders this may as well be swahili...and they shut down.
    The signal itself may be compatible, but thats no good if the initial handshake fails.

    You need 4K or UHD compatible extenders and instead of the lilliput, a screen that shares a common native resolution with the projectors.
     
  3. Member 581642

    Member 581642
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    I would suggest you get an all in one HDBaseT (HDMI over Single Cat6) 4 way Splitter . HDBaset is more forgiving and supports 4K UHD. This though as Andy says above wont help with the Lilliput screen. I would get a Monitor with HDMI input

    HDBaseT 4 Way HDMI Splitter Over SIngle Cat5 6

    For the camera i would use a HDBaset extender from the same range as above

    HDBaseT Extender Set with IR POC and 4K2K Support

    All with 14 day money back guarantee so you can at least try them first and see if it improves the situation
     
  4. Joe Fernand

    Joe Fernand
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    '10" lilliput screen' - have you tested this direct to the Source?

    'Would we benefit from more expensive HDMI extenders?' - price is not a great guide to compatibility.

    This type of system (especially where you are continually adding to it) is better served using HD over LAN with a Gigabit network switch at the 'Hub' of the system.

    HD over Lan comes in various forms - we have two options VLAN and multi-cast, multi-cast allows you to set differing Output formats at each Display device so you can Input up to 2160p at the Source and set individual Zones to 720p, 1080i, 1080p or 2160p depending on the Display you are using at each Output.

    NOTE - we may be ale to customise the Output too for non-standard Displays, will need to confirm that one.

    Joe
     

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