Visually, the cables do not differ from HDMI cables of an older standard. Recognizing is possibleHDMI 2.1 cableon the label “Ultra High Speed HDMI Cable” and a special logo.
HDMI cablescalled “Ultra High Speed HDMI Cables” have an official certificate from HDMI.org, which can be verified using a QR code.
When do I need an HDMI 2.1 cable?
AHDMI 2.1 cable is required for resolutions of 8K at 60Hz or 4K at 120Hz. You also need an HDMI 2.1 cable if you want to use the HDR 10, Dolby Vision or DTS:X functions.
How long can an HDMI 2.1 cable be?
There is a length limitation in the specifications ofHDMI 2.1 does not specify. Passive cables are available in lengths of up to 5m. You can achieve longer cable connections with two HDMI Ultra High Speed cables and a good repeater (amplifier) or you can use an optical HDMI cable.
What is an optical HDMI cable?
At aoptical HDMI cableor fiber optic cable is an active HDMI cable. This cable has transducers (converters) built into the plugs, which convert the electrical HDMI signal into an optical signal and transmit the signal via light pulses. Optical HDMI cables are therefore not bidirectional and have an input for the source and an output for the sink.
What are the advantages of optical HDMI cables?
Optical HDMI Cablesenable loss-free transmission over very long distances of up to 100m. AOC HDMI cables (Active Optical Cable) transmit an optical digital signal that is completely insensitive to interference and full functionality is guaranteed with any cable length. Another advantage of optical HDMI cables is that they are easier to lay than conventional ones due to their small cable diameter and high flexibilityHDMI cable.
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