As we know that HDMI have start HDMI passive cable certificate approval, but for active optical HDMI cable still pending, because compare to passive HDMI 2.1 Cable, The Active HDMI Cable is more complex than you expected, so the Active HDMI 2.1 Cable still without CTS.

But all people knows that copper HDMI cable have its limitation on the length, if you want to get good quality 48Gbps HDMI 2.1 Cable, The Active Optical HDMI is necessary and helpful to you.

Today we share some of key point on design HDMI AOC, if you are an engineer or RD people on HDMI Active Optical Cable, you have to consider how to design a good quality cable, you need consider following requirements:
 

Also, a 2.1 HDMI Active Optical Cable Assembly shall not draw>55mA from a Source and maintain proper voltage on the Sink’s power pin.

Under these conditions, Smartavlink RD people think the main challenges of designing an HDMI 2.1 Active Optical Cable include:

. Tuning EQ settings in the active component to recover the eye from the Source and output a compliant eye at the cable far-end; signal can not be over-driven with too high amplitude (”too good”)

. Keeping power consumption under the 55mA limit

. Keeping I2C wires within the capacitance limit (Shall not exceed 700pF)

. Ensuring that wires for audio and sideband signal (e.g. eARC, DDC) meet performance standards

. Meeting Cat3 EMI performance requirements

If you are a RD people or buyer, you do not know which cable is good quality, you can send mail to info@tiaway.com, we can share our 7 years design and manufacturing experience with you, to tell you how to identify a good quality 48Gbps HDMI 2.1 Active Optical Cable.