标准摘要
[中文适用范围]： 本标准适用于在适合广播应用的 B 型螺旋扫描录像机上使用 25.4 毫米（1 英寸）磁带进行磁性视频记录和/或再现。 [外文原描述]： Applies to magnetic video recording and/or reproducing using 25.4 mm (1 in) tape on type B helical-scan recorders suitable for broadcast applications. Defines the electrical and mechanical characteristics of equipment which will provide for interchangeability of recordings. The requirements given are related to 525 line-60 field and 625 line-50 field systems.
英文名称Type B helical video recorders