... Cetification FEATURESA pocket real-time noise signal analyzerFFT analysis on noise or vibration90dB Level Linearity RangeDifferent software could be selectedAuto-start and auto ... center frequencies and A, C, Z weighting.)21Statistical analysis FunctionStatistical analysis software (S6291-00101)Statistical analysis Menu: LAFp, LAFmax,LAF5, LAF10, LAF50, LAF90, LAF95 ...