Description: The Extech 407790A Real Time Octave Band Analyzer is an auto ranging Type 2 integrating sound level meter that features 1/1 and 1/3 Octave Band real-time noise display and analyses. 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 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.

• Wide 100dB range of 30 to 130dB
• 160 x160 dot matrix backlit LCD displays Leq, LE, Lmax, Lmin, Lp, L05, L10, L50, L90, L95
• Stores readings on microSD card
• Easily Transfer data to a PC to be analyzed using software and cable provided
• A, C and Z weighting with Fast or Slow response
• 25Hz to 10kHz frequency response
• Meets ANSI and IEC Type 2 standards
• Internal self test when powered ON
• Detachable 0.52" (13.2mm) diameter condenser microphone and Tripod mount provided on rear
• Analog AC/DC recorder output
• Real time clock with Year, Month, Day, Hour, Minute and Second display
• Optional microphone extension cable for measurements in enclosures and other remote locations (407764-EXT)