EN 61305-3 : household high-fidelity audio equipment and systems: methods of measuring and specifying the performance: part 3: amplifiers: (IEC 1305-3: 1995 / European Commitee for Electrothecnical Standardization
EN 61580-1 : methods of measurement for waveguides: part 1: decoupling and rotation of the plane of polarization: (IEC 1580-1: 1996) / European Commitee for Electrothecnical Standardization
EN 61580-7 : methods of measurement for waveguides: part 7: graphical method for the determination of waveguide performance: (IEC 1580-7: 1996) / European Commitee for Electrothecnical Standardization
EN 61580-8 : methods of measurement for waveguides: part 8: waveguide power holding capability: (IEC 1580-8: 1996) / European Commitee for Electrothecnical Standardization