NEN 11120-4-1993 IEC 1120-4-1992 专业用采用6.3mm磁带的数字音频盘式磁带录音系统.第4部分:磁带性能.定义和测量方法
Digital audio tape recorder reel-to-reel system, using 6,3 mm magnetic tape, for professional use. Part 4: Magnetic tape properties: definitions and methods of measurement (IEC 1120-4:1992)