This standard specifies the technical requirements and measurement methods for digital switching matrices. Any equivalent measurement method that can ensure the same measurement uncertainty can also be used. In case of dispute, this standard shall prevail. This standard is applicable to the research and development, use, testing, and operation maintenance of digital switching matrices. The following normative references are essential for the application of this standard. For dated references, only the version with the date indicated applies to this standard. For undated references, the latest version (including all amendments) applies to this standard. GB/T14857-1993 Specification for Encoding Parameters of Standard Definition Digital Television Studios GB/T17953-2000 4:2:2 Interface for Digital Component Image Signals GB/T19520.1-2007 Mechanical Structure of Electronic Equipment 482.6mm (19in) Series Mechanical Structure Dimensions of Panels and Racks GB/T 19520.2-2007 Mechanical Structure of Electronic Equipment 482.6mm (19in) Series of mechanical structure dimensions - Grid spacing for cabinets and rack structures GY/T 155-2000 Video parameter values for high-definition television program production and exchange GY/T 157-2000 Studio high-definition television digital video signal interface GY/T 158-2000 Studio digital audio signal interface
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