BS EN 62489-1:2010被替代
Electroacoustics. Audio-frequency induction loop systems for assisted hearing. Methods of measuring and specifying the performance of system components
出版：British Standards Institution
专家解读视频
Pertains to the components of audio-frequency induction-loop systems for assisted hearing.
© British Standards Institution 2013
IEC 62489-1 : 1.1 - Identical
EN 62489-1 : 2010 AMD 2 2018 - Identical
EN 62489-1 : 2010 - Identical
IEC 62489-1 : 1.2 - Identical
EN 62489-1:2010 - Identical
IEC 62489-1 Ed. 1.0 - Identical
