Tripp-Lite B118-002-UHD Manuel De L'utilisateur page 6

Troubleshooting
What HDMI cable length are you using? (See the Installation
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section in this manual for details on the maximum cable distance).
The shorter the cable being used, the higher the resolution you
will be able to obtain. If you are not able to receive an acceptable
image, try using a shorter cable, or lowering your source's video
resolution or color depth settings.
What type of cabling are you using? Inferior cabling can
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result in poor performance, so it is important you use cables that
can support the video resolution you are trying to obtain. It is
recommended you use Tripp Lite's P568-Series High Speed HDMI
cables, as they have been tested to work with the B118-Series
splitters.
Test your cables to ensure they are working properly. For
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example, connect your HDMI cable between a source and monitor
that you know works to see if the cable is functioning.
8 Is the unit located in an area that exposes it to higher
temperatures? If the product is overheated, it will not function
properly.
Are you connecting monitors that have different maximum
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resolutions? When doing so, the video resolution displayed will
be that of the lowest maximum resolution supported among the
connected monitors. For example, when connecting 1080p and
4Kx2K monitors, 1080p video will display.
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7/31/2017 12:24:18 PM