PRO-725: Pass-by Noise ISO 362

Automatic measurements according to ISO 362

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:

Audio Signal recording and 1/3 octave analysis
up to 20 kHz
Automatic 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.

Key Features

Standard Set-up

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

A complete tool for data analysis and reporting

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

Options

FFT, 1/n analysis and Order tracking, Signal editing and Post processing function with dBFA Suite
CABIN Noise analysis
Software option for tire noise ISO standard
Extension for on-board source measurement, synchronous with pass-by data, and correlation for source identification and ranking
Meteo station and ground temperature
Center line and lateral vehicle position checking

PRO-725 Technical Specifications

Trigger points

Light barriers: Photocell/Reflector pairs
Trigger Point Uncertainty: 40mm
Operating Range: up to 10m
Output Delay: <1.3ms
Power Supply: 12 V DC

Displacement and Speed Transducer

Type: Doppler Radar
Displacement Range (Cars): up to 200 m
Speed Range (Cars): up to 150 km/h
Operating Frequency: 10.5 GHz to 35.5 GHz
Doppler Constant: 45.15 Hz/km/h @ 24.15 GHz
Displacement Resolution: avg. approx. 6.2 mm
Tuning Fork: Available
Power Supply: 12 V DC

Sensor Front-End and Control Unit SCS5095

Trigger Input (Photocell): 2
Frequency Input (Radar): 1
Analog Outputs: 1
Trigger Outputs: 2
Frequency Outputs: 1
Photocell Input Range: 10-15 V (Opto-isolated)
Freq. Response: DC-10 kHz
Radar Input Range: 7-15 V (Opto-isolated)
Freq. Response: DC-10 kHz
Input Connectors: XLR 3 pin Female
Field / System Status Indicators: 6
Internal Power Supply: Rechargeable Lead Acid 12V/2Ah
External Power Supply: 10.5-13.8 V DC

Microphone Preamplifiers

Size: ½''
Freq. Range (±0.2dB): 2 Hz - 200 kHz
Noise (Lin): <2.5 uVRMS
Body Length: 77.5 mm
Connector: LEMO 7 pin male

Microphone Cartridges

Type: Class 1 - ½'' Free-field
Sensitivity: 50 mV/Pa
Frequency Range: 6.3 Hz-20k Hz
Polarization voltage: 0 V (pre-polarized)
Sound Pressure Limit: 146 dB
Calibration Certificate: included

Software

Software Platform: MS Windows 95/98/ME
Graphical User Interface: User Friendly Menu / popup menu
Microphone Calibration: Included (Ext. Source needed)
Acquisition parameters: User selectable
Real Time Monitor: Included
Time / Position Conversion: Automatically computed
Graphical Data Rendering: 1/3 octave
Multiple Data Average: Included
Multiple Data Comparison: Available
Graphical Features: Cursors, Zoom, 3D, Printout, .... and others
Recorded Data Format: N channels CMG file
Project/Measurement Information: Microsoft Access based Database
Analysis Results: Native Database
Statistics: Automatically computed (option)
Data Export: Text file
Report Printout: Standard included, Customizable using Microsoft Word editor
Backup/Restore: Save/restore group of data into/to ZIP files
Network ready: Work in a network as file-server application
Audio playback: Using 01dB dBFA32 software
Security: User login guarantee data and software protection

Ordering Information:

SCS5095: Pass-By Control Unit
ALIM-AT3: 220Vac/12Vdc-3A Mains Adapter
01dB-Harmonie: Four Channel Acquisition System and Real Time Analyzer
LB-PC: Long Distance Reflective Photocell (2 pieces)
SS039/30: Photocell Cable Drum (30m) (2 pieces)
STAND3-PC: Adjustable Stand with Photocell Mounting Material (2 pieces)
LB-REF: High Efficiency Reflector (2 pieces)
STAND3-REF: Adjustable Stand with Reflector Mounting Material (2 pieces)
G-40AE: ½'' Free-Field Microphone (2 pieces)
G-26AK: ½'' Microphone Preamplifier (2 pieces)
N-1451: ½'' Wind Screen (2 pieces)
SS004/10: High Quality Microphone Cable Drum (10m)
SS004/30: High Quality Microphone Cable Drum (30m)
STAND2-MIC: Adjustable Stand with Microphone Clamp (2 pieces)
NOTEBOOK: Notebook PC for Use with 01dB Harmonie
SCS8500: Dedicated Software Package for Windows 98 (Customized report printouts may be quoted on request).

For more information, please do not hesitate to contact us: nvh@01db-metravib.com

PRO-725: Pass-by Noise ISO 362

Automatic measurements according to ISO 362

Key Features

PRO-725 Technical Specifications

Ordering Information:

Mesure des vibrations et des nuisances sonores