GB 15742-2001 Translated English of Chinese Standard. (GB15742-2001): Performance Requirements and Test Methods of Horn for Motor Vehicles
https://www.chinesestandard.net, 14 set 2018 - 10 pagine
This Standard specifies performance requirements and test methods of horn for direct current-driven and compressed air-driven motor vehicles; performance requirements and test methods of horn installed on motor vehicles. This Standard is applicable to Category-M, Category-N, Category-L3, Category-L4 and Category-L5 motor vehicles.
1/3 Frequency Interval A-weighted sound pressure anechoic chamber base frame Category-L4 and Category-L5 Category-M and Category-N Category-N automobiles center frequency chamber or semi-anechoic comply with relevant conditions stipulated direct current-driven horn Durability test electric electric-pneumatic horns Fourier transform Frequency Interval Bandpass front of motor horn for Category-M horn for motorcycles horn installed horn on motor Horn test installed on motor Interval Bandpass Filter least 10 dB(A level being tested level shall adopt maximum sound pressure meter Methods of Horn microphone motor vehicles motorcycles power Nominal voltage Performance Requirements pneumatic and electric-pneumatic pneumatic horn pressure level test Requirements and Test requirements of horn semi-anechoic chamber sound exit plane sound pressure level spacious space standard appendix stipulated by manufacturers stipulated in IEC stipulations in 3.1.1 successive sound-making technical content terms of pneumatic Test conditions Test instrument Test Methods test of sound Test voltage total sound pressure value stipulated