This standard BS EN 62121:2001 Methods of measurement for minidisc recorders/players is classified in these ICS categories:
33.160.30 Audio systems
Specifies the measuring methods for recording and reproducing equipment for MiniDiscs that conform to IEC 61909. Lists and defines the characteristics affecting the performance of MiniDisc recorders or players, establishes conditions and methods of measurement of those characteristics, and standardizes the presentation of the results.