QED Performance Active LSZH Optical HDMI Cable 20m

QED has long set the benchmark for high-performance HDMI cables. But standing still inevitably means moving backwards, so QED’s engineers have been applying their unstinting excellence to developing an HDMI cable that exceeds today’s requirements and is ready to handle each and every upcoming HDMI standard. A cable that functions flawlessly even over unlikely lengths. A cable that can be installed and concealed with absolute confidence in its longevity and ongoing performance.Cutting-edge technology, cutting-edge performance. Today, tomorrow and far into the future.

Their shorter length HDMI cables use a carefully designed impedance controlled data lane which is constructed from four, fully shielded, twisted pairs made from large gauge, 99.999% oxygen free copper conductors. These work really well up to a maximum of 15 m but eventually the inherent losses due to impedance mismatch and timing differences between pairs and within pairs (known as inter-pair and intra-pair skew) cause the HDMI signal to break down to the point where it can no longer be reliably decoded at the far end. This is where new QED Active Optical Filter Technology comes in. Instead of using copper data lanes twelve of the nineteen cores are replaced by just four optical fibers. These have the advantage of being unaffected by loss (due to impedance mismatch) or timing variances (due to cross-talk). Although this medium does have its limitations, much longer HDMI cable runs can be usefully produced before these begin to have an adverse effect. 

QED recognize that because of the long lengths in question, the main users of the new cable will be professional installers or those wishing to conceal the cable within the structure of a building. For this reason we have ensured that the cables have all been tested to EN 50575:2014 by a recognized product certification body and have been given a Reaction to Fire Class CCA designation. This means that the Low Smoke Zero Halogen jacket and the internal components are all fully compliant with the latest regulations covering cables for general applications in construction works subject to reaction to fire requirements which are now in force throughout the UK and EU area.