OVE/ONORM EN 62489-1:2015现行
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 + A1:2014)
出版：Osterreichisches Normungsinstitut
专家解读视频
2015 [01/12/2015]2011 [01/01/2011]
EN 62489-1:2010 - Identical
IEC 62489-1 : 1.1 - 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
