NetdB Pro-725

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NetdB Pro-725

Pass-by Noise ISO 362

Automatic measurements according to ISO 362

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Overview

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Main Functions

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Applications

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Specifications

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Picture

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PDF Brochure

OVERVIEW

PRO-725: The complete Pass-by Noise system
The portable system which allows you performing automatic measurements according to ISO 362 standard.
Fully controlled using PDA or Laptop with WiFi built-in, NetdB PRO-725 simultaneously records up to 7 different parameters ready for analysis on the field.

PRO-725 meets your requirements for pass-by noise measurements on the basis of a 4-channel  system which performs:

bulletAudio Signal recording and 1/3 octave analysis
up to 20 kHz
bulletAutomatic report of dBA Level and Spectra
vs. position or rpm

This extremely portable system isfully controlled using PDA or Laptop with WiFi built-in and simultaneously records up to 7 different parameters ready for analysis on the field.

 

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Main functions

Standard Set-up

bulletEN class1 Microphones, Telemetry RPM, Radar position, 2 sets of Light barriers
bulletAll data are recorded are ready for off-line analysis (post-processing)
bulletSingle people operation (driver) using an On-board unit for control and data transmission

A complete tool for data analysis and Reporting

bulletUltra portable Pass-by noise test system
bulletImmediate display of dBA levels for the two microphones vs. position, RPM or Speed, and 1/3 octave band spectra at each vehicle position
bullet7 variable parameters (2 microphones, 2 photocells, 1 RPM channel, 1 radar pulse count input, 1 throttle position) handled on a 4-channel unit
bulletUser interface and measurement system tailored for the convenience of the test Engineer, reduction of cabling and set-up time
bulletReady to use for cabin noise analysis (option)
bulletAll recorded data can be further analyzed and compared, or used for advanced analysis with dBFA software suite (order tracking, transient analysis, etc.)

Options

bulletFFT, 1/n analysis and Order tracking, Signal editing and Post processing function with dBFA Suite
bulletCABIN Noise analysis
bulletSoftware option for tire noise ISO standard
bulletExtension for on-board source measurement, synchronous with pass-by data, and correlation for source identification and ranking
bulletMeteo station and ground temperature
bulletCenter line and lateral vehicle position checking


 

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Applications

Pass-by noise tests & standard report. Noise sources diagnosis. Vehicle homologation. Noise Control.

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SPECIFICATIONS

Trigger points

bulletLight barriers: Photocell/Reflector pairs
bulletTrigger Point Uncertainty: 40mm
bulletOperating Range: up to 10m
bulletOutput Delay: <1.3ms
bulletPower Supply: 12 V DC

Displacement and Speed Transducer

bulletType: Doppler Radar
bulletDisplacement Range (Cars): up to 200 m
bulletSpeed Range (Cars): up to 150 km/h
bulletOperating Frequency: 10.5 GHz to 35.5 GHz
bulletDoppler Constant: 45.15 Hz/km/h @ 24.15 GHz
bulletDisplacement Resolution: avg. approx. 6.2 mm
bulletTuning Fork: Available
bulletPower Supply: 12 V DC

Sensor Front-End and Control Unit SCS5095

bulletTrigger Input (Photocell): 2
bulletFrequency Input (Radar): 1
bulletAnalog Outputs: 1
bulletTrigger Outputs: 2
bulletFrequency Outputs: 1
bulletPhotocell Input Range: 10-15 V (Opto-isolated)
bulletFreq. Response: DC-10 kHz
bulletRadar Input Range: 7-15 V (Opto-isolated)
bulletFreq. Response: DC-10 kHz
bulletInput Connectors: XLR 3 pin Female
bulletField / System Status Indicators: 6
bulletInternal Power Supply: Rechargeable Lead Acid 12V/2Ah
bulletExternal Power Supply: 10.5-13.8 V DC

Microphone Preamplifiers

bulletSize: ½''
bulletFreq. Range (±0.2dB): 2 Hz - 200 kHz
bulletNoise (Lin): <2.5 uVRMS
bulletBody Length: 77.5 mm
bulletConnector: LEMO 7 pin male

Microphone Cartridges

bulletType: Class 1 - ½'' Free-field
bulletSensitivity: 50 mV/Pa
bulletFrequency Range: 6.3 Hz-20k Hz
bulletPolarization voltage: 0 V (pre-polarized)
bulletSound Pressure Limit: 146 dB
bulletCalibration Certificate: included

Software

bulletSoftware Platform: MS Windows 95/98/ME
bulletGraphical User Interface: User Friendly Menu / popup menu
bulletMicrophone Calibration: Included (Ext. Source needed)
bulletAcquisition parameters: User selectable
bulletReal Time Monitor: Included
bulletTime / Position Conversion: Automatically computed
bulletGraphical Data Rendering: 1/3 octave
bulletMultiple Data Average: Included
bulletMultiple Data Comparison: Available
bulletGraphical Features: Cursors, Zoom, 3D, Printout, .... and others
bulletRecorded Data Format: N channels CMG file
bulletProject/Measurement Information: Microsoft Access based Database
bulletAnalysis Results: Native Database
bulletStatistics: Automatically computed (option)
bulletData Export: Text file
bulletReport Printout: Standard included, Customizable using Microsoft Word editor
bulletBackup/Restore: Save/restore group of data into/to ZIP files
bulletNetwork ready: Work in a network as file-server application
bulletAudio playback: Using 01dB dBFA32 software
bulletSecurity: User login guarantee data and software protection

Ordering Information:

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SCS5095: Pass-By Control Unit

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ALIM-AT3: 220Vac/12Vdc-3A Mains Adapter

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01dB-Harmonie: Four Channel Acquisition System and Real Time Analyzer

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LB-PC: Long Distance Reflective Photocell (2 pieces)

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SS039/30: Photocell Cable Drum (30m) (2  pieces)

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STAND3-PC: Adjustable Stand with Photocell Mounting Material (2  pieces)

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LB-REF: High Efficiency Reflector (2  pieces)

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STAND3-REF: Adjustable Stand with Reflector Mounting Material (2  pieces)

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G-40AE: ½'' Free-Field Microphone (2  pieces)

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G-26AK: ½'' Microphone Preamplifier (2  pieces)

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N-1451: ½'' Wind Screen (2  pieces)

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SS004/10: High Quality Microphone Cable Drum (10m)

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SS004/30: High Quality Microphone Cable Drum (30m)

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STAND2-MIC: Adjustable Stand with Microphone Clamp (2  pieces)

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NOTEBOOK: Notebook PC for Use with 01dB Harmonie

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SCS8500: Dedicated Software Package for Windows 98 (Customized report printouts may be quoted on request). 

 

Download PDF Brochure

 

PICTURE

 

 

 

 

 

 

 

 

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