IEC 62489-1 : 1.2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：International Electrotechnical Committee
专家解读视频
Pertains to the components of audio-frequency induction-loop systems for assisted hearing.
NBN EN 62489-1 : 2010 AMD 1 2015 - Identical
BS EN 62489-1 : 2010 - Identical
DS EN 62489-1 : 2010 - Identical
PN EN 62489-1 : 2010 AMD 1 2015 - Identical
OVE/ONORM EN 62489-1 : 2015 - Identical
UNE EN 62489-1 : 2011 - Identical
DIN EN 62489-1 : 2015 - Identical
I.S. EN 62489-1:2010 - Identical
