To display the fullest and most complete 4K Ultra HD features a transmission system requires a minimum of 11.1Gbps bandwidth and bandwidth rapidly decreases with length. For example, the maximum limit for the very highest quality 18Gbps compliant HDMI cable is around 5m.
Most HDMI cables will carry 4K HDR signals over short runs of up to 5m; beyond that serious issues can occur. The complex signals required for this type of picture transmission requires very high bandwidth. To benefit from the rich wide colour gamut offered by the REC2020 standard content must be transmitted at 10bit colour depth. Only cables capable of bandwidths above 10.2Gbps can achieve this. The NueTec Fibre Optic cable delivers 18Gbps bandwidth, supporting 4K@60Hz with 4:4:4 UHD resolutions.
As well as the large bandwidth another benefit of using a Fibre Optic cable is that it is not susceptible to outside interference from mains supplies or other EMF sources. The longer the copper cables are the larger area they have to be influenced by signals, as Fibre Optic uses light no such problems can occur.
Fibre optics provides the speed and bandwidth needed for the best picture quality for UHD video at lengths up to 160 feet – no extenders, baluns, amplifiers or external power supplies are required.