... Wide linearity range of 100dB. Large display with backlighting. Real time clock with calendar. Memory max. 10000 records of Lp data ... Lp , Leq , LE , Lmax , LminFrequency range 25Hz ~ 10KHzFrequency weighting A ,C, FlatTime weighting Fast , SlowDisplay 160x160 dot matrix display with ... .1dB Bar graph : Scale range 100dB , update cycle 0.125s Real time clock : Year, Month, Day, Hour, Minute, Second1/1- ...