给出了旋转控制电机的要求，并描述了 适当的测试。还提供了尺寸和标记信息，以及制造商在相关数据表和目录中提供的详细信息。 仅适用于旋转步进电机。

Gives the requirements for rotating control motors and describes the appropriate tests. Also gives dimensions and marking information and the details to be provided by the manufacturer in associated data sheets and catalogues. Applicable to rotating stepping motors only.