Serial Digital Interface Standard for transferring digital audio and video signals through a BNC coaxial cable, data is transmitted and received sequentially, in series, one behind the other.

It allows the transfer of video signals in 10-bit components, and 20-bit audio, these signals are multiplexed (linked) with more information such as time code, framing color, self-diagnosis, etc.

The audio can be embedded in the video allowing you to enter up to sixteen digital audio channels that are protected in the middle of the video signal.

See CCIR 601, ITU-R 601.