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Octave Band Analyzer W/ Nist Certificate/407790


Price starts at $4,249.00

Product Code : 407790-NIST

Manufacturer : Extech

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Extech 407790 Real time Octave Band Analyzer


  • 160x160 dot matrix backlit LCD displays Leq, LE, Lmax, Lmin, and Lp
  • Built-in memory stores up to 12,280 records in SLM mode and 1024 data points in 1/1 or 1/3 octave mode
  • Stored data can be easily transferred to a PC via RS-232 interface and analyzed using software and cable provided
  • A, C, and Flat weighting with Fast/Slow response time
  • 25Hz to 10kHz frequency response
  • Meets ANSI and IEC Type 2 standards
  • Real time clock with Year, Month, Day, Hour, Minute, and Second display


This auto ranging Type 2 integrating sound level meter features 1/1 and 1/3 Octave Band real-time noise analysis. The 407790 offers five measurement parameters: SPL (Sound Pressure Level), Leq (Equivalent Continuous Sound Pressure Level), LE (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 supplied software and RS-232 cable. This meter permits choice of ?A?, ?C?, or ?Flat? weighting and ?Slow? / ?Fast? response times. AC and DC analog output signals are available for chart recorders and other external recording devices. Careful use of this device will provide years of reliable service.


General Specifications
Applicable Standards IEC 60651 type2, 60804 type 2, ANSI S1.4 type2, IEC 1260 (1995)
Display Backlit LCD (160z160 dot matrix)
Sound level meter mode Numeric display: 4 digits; Update rate: 0.5 seconds; Resolution: 0.1 dB
Bar graph display 100dB range; Update rate: 0.125S; Resolution: 1dB
Frequency analysis mode Numeric display: 4 digits; Update rate 0.5 seconds; Resolution: 0.1dB
Bar graph display 70dB range; Update rate: 0.125S; Resolution: 1 dB
Accuracy ñ1.5dB (ref 94dB @1kHz)
Measurement Frequency range 25Hz to 10 kHz
Dynamic range 100dB (Sound level meter mode); 70dB (Frequency analysis mode)
Measurement range 30dB to 130dB
Sound Pressure Level range SLM mode: 100dB (30 to 130dB)
Frequency analysis mode 70dB (20 to 90dB, 30 to 100dB, 40 to 110dB, 50 to 120dB, 60 to 130dB
Frequency weighting ?A?, ?C?, ?P? (Flat)
Time weighting (Response Time) Fast and Slow
Microphone 1/2 inch electret condenser type
Display warning indicators OVER indicator (Input signal exceeds the upper limit) UNDER indicator (Input signal under the lower limit)
AC output 2 Vrms at FS (full scale); Output impedance approx. 600Ω
DC output 10mV/dB; Output impedance approx. 100Ω
Power Four (4) C size 1.5V alkaline batteries
External DC power supply 6 Vdc, 1A
Battery life Approx. 2hours
Operating Temperature/Humidity 32 to 104øF (0 to 40øC); 10 to 90%RH
Storage Temperature/Humidity 14 to 140øF (-10 to 60øC); 10 to 90%RH
Environment conditions Altitude up to 2000 meters
Dimensions & Weight 13.6 (H) x 4.0 (W) x 2.4 (D)? (34.5 z 10 z 6cm); Approx.33.5 oz. (950g) including batteries
Accessories Four (4) C 1.5V batteries, hard-shell carrying case, CD-ROM Windows software, RS-232 cable, 9 pin to 25 pin adapter, adjustment screw river, Windscreen, 3.5mm plug, and AC adaptor
Optional accessories Microphone extension cable (5m or 10m), Sound level calibrator


NIST Certificate Included.
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