本标准规定了以540 Mb/s的标称速率运行的串行数字接口。本标准适用于同轴电缆长度的电视演播室，其中信号损耗不超过接收器制造商规定的量。在适当的接收机均衡条件下，在时钟频率的一半时，典型的损耗量将在20 dB到30 dB的范围内。设计用于信号衰减较小的接收机是可以接受的。单独的SMPTE文档指定源图像格式到特殊540 Mb/s串行接口的映射。

This standard specifies a serial digital interface that operates at a nominal rate of 540 Mb/s. This standard has application in the television studio over lengths of coaxial cable where the signal loss does not exceed an amount specified by the receiver manufacturer. Typical loss amounts would be in the range of 20 dB to 30 dB at one-half the clock frequency with appropriate receiver equalization. Receivers designed to work with lesser signal attenuation are acceptable. Separate SMPTE documents specify the mapping of source image formats onto the special 540 Mb/s serial interface.