Electroacoustics - Audio-frequency induction loop systems for assisted hearing - Part 2: Methods of calculating and measuring the low-frequency magnetic field emissions from the loop for assessing conformity with guidelines on limits for human exposure (IEC 62489-2:2014); German version EN 62489-2:2014
电声学.辅助听力用音频感应回路系统.第2部分:回路低频磁场发射的计算和测量方法 用于评估是否符合人体接触限值指南(IEC 62489-2-2014);德文版EN 62489-2:2