标准摘要
[中文适用范围]： 适用于一般应用的 16 毫米胶片电影放映机。专为电视电影使用而设计的设备不包括在内。定义影响 16 毫米投影仪性能的特性并指定测量方法 [外文原描述]： Applies to 16 mm motion picture film projectors for 16 mm films for general application. Defines characteristics affecting the performance of 16 mm projectors related to picture quality and to the quality of sound recorded on and reproduced from photographic and magnetic sound tracks. Specifies methods of measurement of those characteristics, and the conditions under which such measurements shall be made, and recommends standard ways of reporting the performance.
英文名称Audiovisual, video and television equipment and systems. Part 20: Methods of measuring and reporting the performance of 16 mm sound film projectors