... (230V) TES-1358B (110V) Real-time 1/1-Octave and 1/3-Octave analysis. Wide linearity range of 100dB ... : Year, Month, Day, Hour, Minute, Second1/1- 1/3 Analyzer level range 5 ranges in 10-dB step ... 40-110dB/ 50-120dB/ 60-130dB1/1 Octave and 1/3 Octave band filters 1/1 Octave band center frequencies : (9 ... , 250Hz, 315Hz, 400Hz, 500Hz, 630Hz, 800Hz, 1KHz, 1.25KHz, 1.6KHz, 2KHz, 2.5KHz, 3.15KHz, 4KHz, 5KHz, ...