... 4.100dB level linearity range AWA 6228 Multifunction Sound Level Meter PERFORMANCE SPECIFICATIONS Standard: Complies with IEC 61672 class 1 Freq ... , 24h or 1 min~59 min Integrating Measurment Software (Basic): Lp, Leq, Lmax, Lmin, LAE, E ,Tm Statistical Analysis Software ( ... S00101 available): Lp, Leq, Lmax, Lmin, L5, L10, L50, L90, L95, SD, ...