... Frequency Range:10Hz~20KHz 2.Complies with IEC61672 class 1 and IEC 61260 ... >90 dB14Sampling Frequency48 kHz15Display240×160 graphic LCD, with EL back-lit16Display Refresh1 Hz for value; ... .1 dB20Real-time Analysis SpeedApprox. 47 times/s (It can simultaneously complete all center frequencies and ... LAFmax,LAF5, LAF10, LAF50, LAF90, LAF95, LAFmin, SD, LAeq1 s, LAeq, T, LAE, LAFeqT.24 hours monitors menu ...