Extech Instruments 407790A User Manual
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Extech Instruments 407790A User Manual

Real time octave band analyzer
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User Manual
Real Time Octave Band Analyzer
Model 407790A
1.800.561.8187
GlobalTestSupply
information@itm.com
www.
www.
.com
.com
Find Quality Products Online at:
sales@GlobalTestSupply.com

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Summary of Contents for Extech Instruments 407790A

  • Page 1 User Manual Real Time Octave Band Analyzer Model 407790A 1.800.561.8187 GlobalTestSupply information@itm.com www. www. .com .com Find Quality Products Online at: sales@GlobalTestSupply.com...
  • Page 2 ..........................................................................................................................................................................................................................................................................................................................................407790A-EN_V2.4 1/20 1.800.561.8187 GlobalTestSupply information@itm.com www. www. .com .com Find Quality Products Online at: sales@GlobalTestSupply.com...
  • Page 3 (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 , or Flat and Slow / Fast /impulse response times.

  • Page 4: Instrument Care

    Clean the instrument only by wiping it with a soft, dry cloth or, when necessary, with a cloth lightly moistened with water. Do not use solvents, abrasives, alcohol or cleaning agents 407790A-EN_V2.4 1/20 1.800.561.8187 GlobalTestSupply information@itm.com...
  • Page 5 External trigger input function Real time clock with calendar Main channel (sound meter, analyzer mode) Sub Channel (sound level meter mode) The 407790A allows the following quantity measurements. Simultaneous measurements of all items with selected time weighting and frequency characteristics. Sound level...

  • Page 6: Meter Description

    Comparator output jack Trig IN jack 10. Micro SD card slot 11. Power switch 12. Hand strap 13. USB port 14. Battery compartment Tripod mounting screw 407790A-EN_V2.4 1/20 1.800.561.8187 GlobalTestSupply information@itm.com www. www. .com .com Find Quality Products Online at:...
  • Page 7 407790A-EN_V2.4 1/20 1.800.561.8187 GlobalTestSupply information@itm.com www. www. .com .com Find Quality Products Online at: sales@GlobalTestSupply.com...

  • Page 8: Operation Buttons

    MENU Press to enter menu screen to setup various menu parameters. Press again to close the menu. R button Start or stop the auto Record process or press to manually store the measurement data 407790A-EN_V2.4 1/20 1.800.561.8187 GlobalTestSupply information@itm.com www.
  • Page 9 When automatic Backlight Off function is selected from the menu screen, the backlight will turn itself off automatically after the preset time. Enter button will finalize a setting of an item in a menu or any other setting. 407790A-EN_V2.4 1/20 1.800.561.8187 GlobalTestSupply information@itm.com...

  • Page 10: Display Screen

    4. Trigger Mode: Controls the measurement and memory auto store start behavior. Available modes are: Level 1 (LV1), Level 2 (LV2), EXT (EXT), and time (TIME). 5. Elapsed Time: Displays the elapsed time in seconds during processing and storing memory. 407790A-EN_V2.4 1/20 1.800.561.8187 GlobalTestSupply information@itm.com...
  • Page 11 Cmp will appear on the display. A signal will output from the comparator output jack on the side panel (open collector). 23. Current date: Displays the current date 24. Current time: Displays the current time 407790A-EN_V2.4 1/20 1.800.561.8187 GlobalTestSupply information@itm.com www.
  • Page 12 1.800.561.8187 GlobalTestSupply information@itm.com www. www. .com .com Find Quality Products Online at: sales@GlobalTestSupply.com...

  • Page 13: Numeric Display Screen

    2.5 Numeric Display screen Example for 1/1 OCT, 1/3 OCT, and 1/1 & 1/3 OCT analysis screen are shown below. Use the buttons to view a frequency that is not displayed. 407790A-EN_V2.4 1/20 1.800.561.8187 GlobalTestSupply information@itm.com www. www. .com .com Find Quality Products Online at: sales@GlobalTestSupply.com...
  • Page 14 407790A-EN_V2.4 1/20 1.800.561.8187 GlobalTestSupply information@itm.com www. www. .com .com Find Quality Products Online at: sales@GlobalTestSupply.com...

  • Page 15: Setting The Date And Time

    7. Press MENU button to return to the measurement screen. Note: The clock has an error of about 1 minute per month. Before taking measurement, be sure to check and set the time if required. Date 407790A-EN_V2.4 1/20 1.800.561.8187 GlobalTestSupply information@itm.com www.
  • Page 16 Time 407790A-EN_V2.4 1/20 1.800.561.8187 GlobalTestSupply information@itm.com www. www. .com .com Find Quality Products Online at: sales@GlobalTestSupply.com...

  • Page 17: Sd Memory Card

    30 seconds, 1 minute, 3 minutes or OFF (without automatic turn - off function). 5. Press key to return to the measurement screen. To turn the backlight off before the automatic turn - off time, press the key. 407790A-EN_V2.4 1/20 1.800.561.8187 GlobalTestSupply information@itm.com www.

  • Page 18: Sub Channel Settings

    A, C or Z, then press button. 6. Press button to return to the measurement screen. Note: There is no frequency analysis function for the sub channel. Only the all - pass value is measured. 407790A-EN_V2.4 1/20 1.800.561.8187 GlobalTestSupply information@itm.com www. www.

  • Page 19: Selecting The Lmax/Lmin Type

    Band, AP or AP (S) type then press button. 4. Press button to return to the measurement screen. This setting is effective in SLM mode and Octave band analyzer mode. 407790A-EN_V2.4 1/20 1.800.561.8187 GlobalTestSupply information@itm.com www.
  • Page 20 (Setting range 25 to 130dB, 1 - dB steps) 5. Follow the above steps to select 2). Comparator Band et the band to desired level then press button 6. Press the button to return to the measurement screen. 407790A-EN_V2.4 1/20 1.800.561.8187 GlobalTestSupply information@itm.com www. www. .com .com...
  • Page 21 407790A-EN_V2.4 1/20 1.800.561.8187 GlobalTestSupply information@itm.com www. www. .com .com Find Quality Products Online at: sales@GlobalTestSupply.com...
  • Page 22 Comparator signal output continues for 0.5 seconds after the signal crosses the threshold level 1.800.561.8187 GlobalTestSupply information@itm.com www. www. .com .com Find Quality Products Online at: sales@GlobalTestSupply.com...
  • Page 23 External trigger: A Measurement starts at falling edge of a logic-level (0 to 5V logic) signal at the external trigger input. A Pulse width of 1ms or more is required. The external trigger is valid at all times 407790A-EN_V2.4 1/20 1.800.561.8187 GlobalTestSupply information@itm.com...

  • Page 24: Trigger Setup

    1. Press the MENU button to enter the menu list screen. K) . Trigger 2. Use the button. 3. Use the button. 4. Press the button to return to the measurement screen. 407790A-EN_V2.4 1/20 1.800.561.8187 GlobalTestSupply information@itm.com www. www. .com .com Find Quality Products Online at: sales@GlobalTestSupply.com...
  • Page 25 Hour:Minute:Second then press the button. 8. Press the button to return to the measurement screen. 3.7.4 Trigger Level Setting The Triger can be set to start a meter recording at a specific Trigger dB level setting. 407790A-EN_V2.4 1/20 1.800.561.8187 GlobalTestSupply information@itm.com www. www.
  • Page 26 Note: For LEVEL 2 trigger, ignore the slope setting and only use the Slope+ trigger. 10. Press the button to return to the measurement screen. 11. Press the R button on the meter to start automatic recording. The meter will start recording when the trigger level is exceeded. 407790A-EN_V2.4 1/20 1.800.561.8187 GlobalTestSupply information@itm.com www.

  • Page 27: Sound Level Measurements

    In sound level meter mode, the bar graph indication will stop during pause. In the pause condition, a pause symbol ( ) appears on the display. 407790A-EN_V2.4 1/20 1.800.561.8187 GlobalTestSupply information@itm.com...
  • Page 28 3. Use the FREQ WEIGHT TIME button to select the time weighting characteristic. For normal sound level measurements 4. Use the LEVEL buttons to set the level range. The main channel bar graph indicator should be in the middle of the range. 407790A-EN_V2.4 1/20 1.800.561.8187 GlobalTestSupply information@itm.com www. www.
  • Page 29 Important: During measurement, the LEVEL button, FREQ WEIGHT TIME button, TIME WEIGHT and SLM/RTA function are disabled. Be sure to complete all settings before starting the measurement. symbol 407790A-EN_V2.4 1/20 1.800.561.8187 GlobalTestSupply information@itm.com www. www. .com .com Find Quality Products Online at:...
  • Page 30 The sound band level is being displayed when there is no character string after the basic indicator. LAF: Sound band level is being displayed. LAeq: Sound band level is not being displayed. 407790A-EN_V2.4 1/20 1.800.561.8187 GlobalTestSupply information@itm.com www.
  • Page 31 407790A-EN_V2.4 1/20 1.800.561.8187 GlobalTestSupply information@itm.com www. www. .com .com Find Quality Products Online at: sales@GlobalTestSupply.com...
  • Page 32 SLM/RTA functions are disabled. Be sure to complete all settings before starting the measurement. 12. When the measurement is completed, the symbol disappears. displayed, the processed data includes data where the sound level signal caused an overload condition. 407790A-EN_V2.4 1/20 1.800.561.8187 GlobalTestSupply information@itm.com www. www.
  • Page 33 ( ) appears on the display. (The pause interval is not included in the measurement time.) During measurement, you can use the key to check the measured values as currently calculated. 407790A-EN_V2.4 1/20 1.800.561.8187 GlobalTestSupply information@itm.com www.
  • Page 34 Continuous store of main channel sound level Lp values for each band and all-pass values, sub channel all-pass values as 1 set at preset measurement integrate time. Automatically recorded data can be retrieved using the supplied software. 5.1 Manual Memory Storage 407790A-EN_V2.4 1/20 1.800.561.8187 GlobalTestSupply information@itm.com www.
  • Page 35 Note: When address 250 is reached, the MFul symbol will be displayed and no more data can be stored. 407790A-EN_V2.4 1/20 1.800.561.8187 GlobalTestSupply information@itm.com www. www. .com .com Find Quality Products Online at: sales@GlobalTestSupply.com...
  • Page 36 407790A-EN_V2.4 1/20 1.800.561.8187 GlobalTestSupply information@itm.com www. www. .com .com Find Quality Products Online at: sales@GlobalTestSupply.com...
  • Page 37 5.2 Recalling Manually Stored Data 407790A-EN_V2.4 1/20 1.800.561.8187 GlobalTestSupply information@itm.com www. www. .com .com Find Quality Products Online at: sales@GlobalTestSupply.com...
  • Page 38 407790A-EN_V2.4 1/20 1.800.561.8187 GlobalTestSupply information@itm.com www. www. .com .com Find Quality Products Online at: sales@GlobalTestSupply.com...
  • Page 39 5.3 Erasing Manually Stored Data 407790A-EN_V2.4 1/20 1.800.561.8187 GlobalTestSupply information@itm.com www. www. .com .com Find Quality Products Online at: sales@GlobalTestSupply.com...
  • Page 40 5.4 Auto 1 Memory Storage LEVEL 407790A-EN_V2.4 1/20 1.800.561.8187 GlobalTestSupply information@itm.com www. www. .com .com Find Quality Products Online at: sales@GlobalTestSupply.com...
  • Page 41 407790A-EN_V2.4 1/20 1.800.561.8187 GlobalTestSupply information@itm.com www. www. .com .com Find Quality Products Online at: sales@GlobalTestSupply.com...
  • Page 42 407790A-EN_V2.4 1/20 1.800.561.8187 GlobalTestSupply information@itm.com www. www. .com .com Find Quality Products Online at: sales@GlobalTestSupply.com...
  • Page 43 407790A-EN_V2.4 1/20 1.800.561.8187 GlobalTestSupply information@itm.com www. www. .com .com Find Quality Products Online at: sales@GlobalTestSupply.com...
  • Page 44 12. Press the button to return to the measurement screen. 13. Press the button to start the measurement. If a trigger has been set, measurement will start when the trigger conditions are met. 407790A-EN_V2.4 1/20 1.800.561.8187 GlobalTestSupply information@itm.com www. www.
  • Page 45 5.6 Erasing Auto Stored Data 407790A-EN_V2.4 1/20 1.800.561.8187 GlobalTestSupply information@itm.com www. www. .com .com Find Quality Products Online at: sales@GlobalTestSupply.com...
  • Page 46 407790A-EN_V2.4 1/20 1.800.561.8187 GlobalTestSupply information@itm.com www. www. .com .com Find Quality Products Online at: sales@GlobalTestSupply.com...

  • Page 47: Software Download And Installation

    6. Software Download and Installation 407790A-EN_V2.4 1/20 1.800.561.8187 GlobalTestSupply information@itm.com www. www. .com .com Find Quality Products Online at: sales@GlobalTestSupply.com...
  • Page 48 The longer the period of measurement time, the more accurate the Leq reading will be, a typical period is 8 hours (the length of a working day). SEL Sound exposure level (L 407790A-EN_V2.4 1/20 1.800.561.8187 GlobalTestSupply information@itm.com www.
  • Page 49 8. Calibration Calibrating the 407790A requires an acoustical calibrator such as the Extech Model 407766 or 407744 that can provide 94.0dB or 114dB at 1kHz. Set the power switch to the OFF position. Press and hold the Insert the microphone into the opening of the acoustical calibrator.

  • Page 50: Specifications

    ±1.0dB (ref 94dB @1kHz) Measurement Frequency range: Octave analysis 31.5 Hz to 8 kHz; 1/3 Octave analysis 25 Hz to 10kHz Frequency weighting: Inherent noise: A-weighting max. 17dB; C-weighting max. 25dB; z-weighting max. 30dB 407790A-EN_V2.4 1/20 1.800.561.8187 GlobalTestSupply information@itm.com www.
  • Page 51 1/1-octave analysis 16185 data sets 19944162 data sets 1/3-octave analysis 9466 data sets 11942248 data sets 1/1 and 1/3 OCT mode 7839 data sets 9946834 data sets 407790A-EN_V2.4 1/20 1.800.561.8187 GlobalTestSupply information@itm.com www. www. .com .com Find Quality Products Online at:...
  • Page 52 Accessories: Four (4) C 1.5V batteries, hard-shell carrying case, CD-ROM, USB cable, 4GB micro SD card, Windscreen, 3.5mm plug, and AC adaptor Optional accessories: Microphone extension cable (4.7m (15ft), p/n 407764-EXT), Sound level calibrator, Tripod 407790A-EN_V2.4 1/20 1.800.561.8187 GlobalTestSupply information@itm.com www.

  • Page 53: Two Year Warranty

    Contact Customer Support Customer Support Telephone Calibration, Repair, and Returns email Technical Support Copyright © 2020 FLIR Systems, Inc. All rights reserved including the right of reproduction in whole or in part in any form 407790A-EN_V2.4 1/20 1.800.561.8187 GlobalTestSupply information@itm.com www. www.
  • Page 54 Teléfono de atención al cliente Correo electrónico de Calibración, Reparación, y Devoluciones: Soporte Técnico: Copyright © 2020 FLIR Systems, Inc. Reservados todos los derechos, incluyendo el derecho de reproducción total o parcial en cualquier medio 407790A-EN_V2.4 1/20 1.800.561.8187 GlobalTestSupply information@itm.com www. www.

  • Page 55: Garantie De Deux Ans

    Web pour obtenir les informations les plus récentes sur nos produits: Téléphone Support technique: Copyright © 2020 FLIR Systems, Inc. Tous droits réservés, y compris la reproduction partielle ou totale sous quelque forme que ce soit 407790A-EN_V2.4 1/20 1.800.561.8187 GlobalTestSupply information@itm.com www. www.

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