I.S. EN 62489-1:2010现行
Electroacoustics - Audio-frequency Induction Loop Systems for Assisted Hearing Part 1: Methods of Measuring and Specifying the Performance of System Components
出版：National Standards Authority of Ireland
专家解读视频
Pertains to the components of audio-frequency induction-loop systems for assisted hearing.
EN 62489-1:2010 - Identical
EN 62489-1 : 2010 - Identical
EN 62489-1 : 2010 AMD 2 2018 - Identical
EN 62489-1 : 2010 - Identical
IEC 62489-1 : 1.2 - Identical
