scope:

This STANDARD defines the requirements for the distribution system characteristics of analogue raster composite video systems and includes definitions of video line required values, distribution and video source and sink interfaces together with Annex A defining colour. It applies to all aircraft system installations for generation, processing, distribution and reception of the defined raster formats. 

This allied publication specifies the line characteristics to be used as well as distribution, source and sink characteristics in order to promote interoperability and facilitate inclusion of multiple sources and/or multiple sinks to be included in the total video system. The definition of the distribution system includes the use of switching or mixing devices and makes allowance for noise and signal degradation likely to be introduced by such devices.