With the main purpose of transmitting digital signals, HDMI cables offer rapid transmission speeds while restoring the color, sound, and image, ensuring the most real and natural display performance. This is why HDMI cables are regarded as a crucial part of modern audiovisual devices. From the display of ordinary videos with 1080p resolution to the 4K–8K videos, the transmitted sound, images, and operation signal volumes have seen significant growth. To ensure that the audiovisual quality remains unaffected by the large data volume, the user not only needs to confirm the correct HDMI cable specification for the audiovisual device but also must select a quality cable. Such two factors will directly impact the user’s satisfaction.
A superb HDMI cable is capable of completely restoring the digital signals of the output device on the display device within its effective distance, maintaining the richness of the image and audiovisual vividness. In general, the HDMI signal attenuates as the transmission distance becomes longer. An HDMI cable with poor material quality and shielding effect may not cause much difference in displaying 720p and 1080p videos, but when it comes to a 4K or 8K video, one will clearly witness how the cable material quality impacts the performances. With cables of lower quality, color differences may appear, the transmission may become unstable due to insufficient bandwidth, and even image flickers or black screens may occur. As one would expect, such cables are also weaker against noise inference.
Here’s an example. Most HDMI cable specifications claim it supports 4K (4096*2160) resolution; however, the support of HDMI 2.0 is divided into 30 or 60 frames per second. When the applied HDMI cable lacks quality and can’t match the maximum bandwidth (18 Gbps) requirement, 30 FPS 4K images can still be normally displayed, yet flickering or stuttering may appear on the 60 FPS 4K images.
Consumers’ satisfaction is also closely related to the HDMI cable quality. The return rate analysis on the 2021 USA market shows up to $761 billion worth of goods were returned due to poor user experiences, proving that consumers now have higher demands for their satisfaction.
There are various ways to ensure that the purchased HDMI cable won’t cause unpleasant experiences:
1. Choose certified cables that comply with HDMI specifications.
2. When searching for a cable longer than 15 meters, one must be mindful of the brand quality. The longer the cable, the higher the required material quality will be.
Allion Labs offers comprehensive services for HDMI certification, HDMI quality performance inspection, and HDMI production line quality performance inspection and testing. We also offer consultancy services for any issue regarding cable design and high-frequency signals. Allion Labs’ team of experts will always be at your service.