... Leq,LE,Lmax,Lmin 3).RS-232 Interfac Sound Analyzer with 1/3 Octave Capability TES- ... of 100dB. Large display with backlighting. Real time clock with calendar. Memory max. 10000 records of Lp ... , SlowDisplay 160x160 dot matrix display with back light Sound level meter display Numerical : 4 digits, up data ... : Scale range 100dB , update cycle 0.125s Real time clock : Year, Month, Day, Hour, Minute, Second1/1 ...