... RC232C connector and communication cable. It can realize Lp real time communication output and airplane noise Lepn measurement. It is ... SD, Lmin, L95, L90, L50, L10, L5, Lmax, reverberation time T60, LepnAutomatic acquisition and storage: 200 teams of data single ... 10min,20min,30 min,1h,8h,24hClock: year, month, date, hour, minute, secondOutput interfaceserial interface RS232CAC interface: Max effective ...