... RC232C connector and communication cable. It can realize Lp real time communication output and airplane noise Lepn measurement. It is ... measurement and industrial noise measurement, such as equipment noise, vehicle noise, vessel noise and electrical equipment noise. It is ... SD, Lmin, L95, L90, L50, L10, L5, Lmax, reverberation time T60, LepnAutomatic acquisition and storage: 200 teams of data single ...