Hearing aids - Part 4: Magnetic field strength in audio-frequency induction loops for hearing aid purposes (IEC 60118-4:1981 + A1); German version EN 60118-4:1998 + A1:1998— 7 стр.
Electroacoustics - Audio-frequency induction loop systems for assisted hearing - Part 1: Methods of measuring and specifying the performance of system components (IEC 62489-1:2010); German version EN 62489-1:2010— 21 стр.
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 62489-2:2011); German version EN 62489-2:2011— 18 стр.
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— 17 стр.
