GB 15742-2019 Translated English of Chinese Standard. GB15742-2019: Performance requirements and test methods of horn for motor vehicles [Buy--download True-PDF in 3-second: https://play.google.com/books > Sign in > This BOOK > "3-dots" > Export > Save as "*.pdf"]This Standard specifies the performance requirements, test methods of electric horn and air horn for motor vehicles and loading performance requirements and test methods of the horn. This Standard applies to type M, N, L motor vehicles. |
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A-weighted sound pressure accordance accuracy adjust the horn allowed to adjust ambient temperature anechoic chamber Appendix applicable automobiles and motorcycles base frame center frequencies changed to GB/T Clause comply component conditions specified continuous sounding dB(A document durability test edition Electric Appliance electric horn electro-pneumatic horns Electroacoustics environment and test exceed filters following conditions Fourier transform height horn for mopeds horn for motor horn for motorcycles horn’s sound Installation L1 and L2 L2 mopeds less Loading performance requirements maximum measured methods of horn microphone motor vehicles mounted N automobiles noise Nominal voltage Normative references Octave-band open area open space pneumatic and electro-pneumatic power greater power not greater power supply provisions of 3.1.1 radius requirements and test Resistance semi-anechoic chamber Sound level meters sound outlet plane sound pressure level spectrum Standard technical Test conditions Test environment test instruments test methods total sound pressure type L1