本欧洲标准规定了实际测量光纤或光缆衰减和衰减变化的程序（以下称为光纤）。方法A和B用于纤维验收测试，并应在大于1公里的光纤长度上进行。方法C用于在环境和机械测试期间所需的衰减测量，并且应在小于100 m的光纤长度上进行

This European Standard specifies procedures for the practical measurement of the attenuation and variation in attenuation of optical fibre or optical cable (both hereafter referred to as fibre). Methods A and B are intended for fibre acceptance testing and shall be performed on fibre lengths greater than 1 km. Method C is intended for attenuation measurement required during environmental and mechanical testing and shall be performed on fibre lengths less than 100 m.