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Why is there no signal on my HDMI AOC after Installation?

Why is there no signal on my HDMI AOC after Installation?
03/06/2020

There are a lot of HDMI Cables on the market, but they are divided into 2 styles: passive HDMI cable and active HDMI Cable. The difference between them is that passive HDMI cable has no chipsets, but the active one has chipsets inside.

Active HDMI cables are divided into Active Copper HDMI cable (Redmere solution) and Active Optical HDMI cable (Smartavlink’s solution).

It is generally accepted that Active Optical HDMI cable is the high-speed HDMI signal transmission solution of the future. This is because fibre optical versions can reliably send the highest bandwidth from a 1G to a 100Gbps signal. This solution is now being widely adopted in home theatres and meeting rooms. But on occasion we find HDMI AOC cable does not work after it has been installed? Why is that?

Before we look into this, we need to understand how the two types of cable differ.

HDMI (High-Definition Multimedia Interface)

HDMI is a proprietary audio/video interface for transferring compressed or uncompressed video and audio data from an HDMI-compliant source device, such as a display controller, to a compatible computer monitor, video projector, digital television, or digital audio device. HDMI is a digital replacement for analog video standards.

HDMI AOC (HDMI Active Optical Cable)

HDMI AOC (Active Optical Cable) is a kind of cable that replaces the copper cable, and the port can be used directionally as with copper HDMI cable. It uses Electronic-Fiber and Fiber-Electronic converting technology to send HDMI signals through fibre optical.

HDMI AOC has the following advantages:

Long-distance. The max distance can be 100m without any signal loss or delay. High bandwidth. It ranges from 18Gbps (HDMI 2.0) to 48Gbps (HDMI 2.1). Easy Installation, plug in plug out, and no need an external power supply. Soft, flexible, and slim, and lower EMI interrupts.

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