1.Frequency Range:10Hz~20KHz 2.Complies with IEC61672 class 1 and IEC ... , Lxeq,T, LAE, E, Cpeak, TmNote: fm is center frequency; X is frequency weighting A, C, Z. Y is time weighting F ... , T30, EDT4. Measuring Range: 0.20s to 20.00 s5. Wave record time: 10 s or 20 s6. Bandwidth of digital filters ... :1/1 OCT or 1/3 OCT7. Center Frequency Ranges: 63 Hz ~ 16 ...