... ,Leq,LE,Lmax,Lmin 3).RS-232 Interfac Sound Analyzer with 1/3 Octave Capability TES-1358 TES-1358A (230V) TES ... analysis. Wide linearity range of 100dB. Large display with backlighting. Real time clock with calendar. Memory max. 10000 records of Lp data. RS ... A ,C, FlatTime weighting Fast , SlowDisplay 160x160 dot matrix display with back light Sound level meter display Numerical : 4 digits, up ...