Issues with the SDI to HDMI 4K

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Sam Jones

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  • Joined: Wed Dec 04, 2013 9:53 am

Issues with the SDI to HDMI 4K

PostFri Feb 21, 2014 10:05 am

Hi everyone,

I recently bought the SDI to HDMI 4K for purposes of a live demo streamed accross campus via the Sony IP55's. I am having issues with quad link 1.5G SDI 1080/50i inputs into the converter. it is not wanting to work with the IP55's at the moment, is this an issue with the signal type, or could it be the converter itself?

Thanks

Sam
    ATEM TVS
    ATEM Production Studio 4K
    Intensity Pro
    2 x Decklink 4K Extreme
    SDI to HDMI 4K converter
    Ultrastudio Express
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Chad

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Re: Issues with the SDI to HDMI 4K

PostFri Feb 21, 2014 8:37 pm

According to the website the "NXL-IP55 allows you to transmit up to four genlocked HD video streams (three downstream and one upstream, or two downstream and two upstream)"

That means it can only transmit 3 streams in one direction, not 4 so I don't think it will work.
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Sam Jones

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Re: Issues with the SDI to HDMI 4K

PostTue Feb 25, 2014 8:49 am

hi chad,

I am using two seperate IP55's at each end of the stream to allow for 4 signals to be sent.

Cheers
    ATEM TVS
    ATEM Production Studio 4K
    Intensity Pro
    2 x Decklink 4K Extreme
    SDI to HDMI 4K converter
    Ultrastudio Express
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Chad

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Re: Issues with the SDI to HDMI 4K

PostTue Feb 25, 2014 8:22 pm

I don't think you can use 2 separate streamers like that. For the 4K signal to work, all 4 signals must be in perfect genlock, a single streamer can do that because it can "mux" all 4 signals together in a single "packet". However 2 separate streamers by definition would be in 2 separate packets (one per streamer) which means those packets would almost never arrive at the same time to keep them locked. Unless the streamers have some kind of way to all sync to each other.
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Sam Jones

  • Posts: 207
  • Joined: Wed Dec 04, 2013 9:53 am

Re: Issues with the SDI to HDMI 4K

PostThu Feb 27, 2014 9:50 am

The streamers are capable of using both a reference signal and the SDI signal to sync the boxes. It also has the option of syncing using the Network that it is connected too. They are designed to work with either 2 boxes transmitting to two boxes or 3 to 1 and 1 to 3. Alongside this, they are also intended for local cross campus tests.
    ATEM TVS
    ATEM Production Studio 4K
    Intensity Pro
    2 x Decklink 4K Extreme
    SDI to HDMI 4K converter
    Ultrastudio Express

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