For instance, when running a cable from source to TV through the wall or ceiling, the length of the cable run can very quickly exceed long distances of 15-20 metres and, therefore, stretch beyond the recommended capabilities of hdmi tranmission. HDMI (High Definition Multimedia Interface), the combined HD video and audio signal standard is now the most commonly used cable interface for residential, home theater and commercial AV systems. Most commonly, a HDMI cable is used to simply connect a HD or 4K UHD Source (such as a BluRay player or your Sky TV Box) directly to an adjacent TV and so a normal 3 metre HDMI lead distance would easily cover that short distance from one device to the other on the TV stand.īut as we see more and more wall-mounting of TVs and screens, digital signage and video walls becoming increasingly commonplace, the distance between source and display can quickly increase to significantly greater lengths.
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