... L90,Lmax,SD,Ld,Ln,Ldn,1/1 frequency spectrumFilter characteristics1/1 frequency intervalcentre frequency: 31.5Hz,63Hz,125Hz,500Hz,1kHz,2kHz ... communication to print measured data and frequency spectrum histogramSound calibration TL6020/6020A sound level calibrator Sound level: 94dB, 1kHzDisplay 54mm×42mm ... : 178mm×81mm×31mmWeight 0.4kg , printer: 0.41kg digital sound frequency analysis meter