The Extech 407790A Octave Band Analyzer is a type 2 integrating sound level meter with Octave and 1/3 Octave Band real time display. The 407790A offers five measurement parameters: SPL (Sound Pressure Level), Leq (Equivalent Continuous Sound Pressure Level), SEL (Sound Exposure Level), Lmax (Maximum Sound Pressure Level), and Lmin (Minimum Sound Pressure Level).
The Extech 407790A Octave Band Analyzer has a range from 30 to 130dB with a standard accuracy of ±1.5dB (ref 94dB @ 1kHz). The 407790A features 1/1 and 1/3 Octave Band real‐time noise analyses. The built‐in memory stores 12,280 data records in sound level mode and 1024 records in Octave mode. The stored data can be easily transferred to a PC with the 407790A software and USB cable. This meter permits choice of ‘A', ‘C', or Flat 'Z' weighting and Slow / Fast /impulse response times. AC and DC analog output signals are available for chart recorders and other external recording devices.
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