The longest signal transmission distance that an HDMI cable can achieve depends on the entire system: the performance of the source device, the performance of the display device, the data transmission rate of the signal, and the performance and length of the cable itself. In the digital age, we use data rate to describe the amount of data in bits per second.
The length of the HDMI cable is closely related to the maximum data transmission rate. If the distance is too long, the signal received by the HDMI device will have no image, dropped frames, snow, or no sound. The shorter the HDMI cable, the higher the maximum data transfer rate that can be achieved. For example, the data transmission rate of an HDMI cable at a length of 2m is 19Gb/s, which can meet the video transmission of 1080p, 120Hz, and 48bit color depth.
But if the length reaches 6 meters, the data transmission rate drops to 10Gb/s, which can only meet the video transmission of 1080p, 120Hz, and 24bit color depth. Therefore, as the length of this cable increases, the data transmission rate will also decrease.
