指定在磁带上形成螺旋记录的数据块的内容、格式和记录方法。介绍了使用6.35mm（1/4英寸）磁带的螺旋扫描数字盒式录像系统的盒式磁带、调制方法、磁化强度和基本系统数据的通用规范。定义设备的电气和机械特性，以提供记录磁带的互换性。

Specifies the content, format and recording method of the data blocks forming the helical records on the tape. Describes the common specifications for cassettes, modulation method, magnetization and basic system data, for helical-scan digital video cassette recording system using 6,35 mm (1/4 inch) magnetic tape. Defines the electrical and mechanical characteristics of equipment which will provide for the interchangeability of recorded cassettes.