本规程规定了用于传输到视频媒体的磁性胶片母版上立体声使用的左声道和右声道分配。它还提供了建议的测试信号，以供在磁头上使用。

This practice specifies the left- and right-channel assignments for stereo usage on magnetic film masters intended for transfer to video media. It also gives recommended test signals for use on the head leader of the magnetic master.