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Extech 407790 Real time Octave
Band Analyzer
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Extech 407790
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Features:
- 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
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Description
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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.
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Models, Options, & Accessories
| Model |
Description |
List Price |
Sale Price |
| 407790 |
SOUND ANALYZER, OCTAVE BAND |
| $3599.00 |  |
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| Model |
Accessories |
List Price |
Sale Price |
| 407744 |
SOUND LEVEL CALIBRATOR |
| $299.99 | |
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Specifications
| General Specifications |
| Applicable Standards |
IEC 60651 type2, 60804 type 2, ANSI S1.4 type2, IEC 1260 (1995) |
| Display |
Backlit LCD (160×160 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 |
±1.5dB (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 104°F (0 to 40°C); 10 to 90%RH |
| Storage Temperature/Humidity |
14 to 140°F (-10 to 60°C); 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 × 10 × 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 |
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