Used as a single unit or as chained units, NetdB is very flexible:

• NetdB with 4 channels, NetdB with 6 channels, NetdB with 8 channels, NetdB with 10 channels or NetdB with 12 channels, based on an adaptation of the firmware
• NetdB with 20 channels, achieved by adding a rear card (8 channels)
• NetdB with multiple synchronised channels, by chaining of the units using long-distance Ethernet cables (patented connection)

NetdB is a versatile and open instrument that can be used in stand-alone mode or in PC acquisition mode:

• Embedded internal hard disk up to 85 GB
• Integrated batteries with 2h operating life depending on selected configuration
• Possible driving from LabVIEW, MATLAB, C/C++,...
• Compatibility with dBFA Suite, dBPower software dedicated to Sound Power, dBSonic software dedicated to Sound Quality… to meet industrial requirements

Using fixed and/or wireless communication, NetdB can be adapted for better on-site performance:

• Ethernet connection for data synchronisation and transfer to the PC for analysis
• WiFi connection for control using the Pocket PC WiFi remote control
• Signal generation (Sine/ Swept sine/ Burst / White noise/ Pink noise/ MLS/ WAV)
• Jack and AES/EBU standard digital stereo audio output

NetdB meets your requirements for the everyday use of an efficient Sound & Vibration analyzer!

Indeed this complete package composed of a remote control, a NetdB platform, with the full-featured versatile dBFA Suite software is the perfect way for performing any NVH work in most demanding and operational conditions with an increased flexibility:

• It's a Recorder
• It's a Sound and Vibration Analyzer
• It's a Troubleshooter
• It really makes your life easier

Various solutions are available, depending on the number of activated NetdB channels, NetdB 4 channels, NetdB 6 channels, NetdB 8 channels, NetdB 10 channels, NetdB 12 channels, NetdB 20 channels, NetdB 24 channels or more:

• the 4-channel solution with only 4 activated channel on NetdB plateform.
  • NetdB Stand alone Recorder composed of 4 activated channels
    Recorder: Signal recording, white/pink/sine/sweep sine generator (if available on hardware), tacho acquisition,
    Analyzer: Simultaneous signal recording and real-time multiprocessing and monitoring, Average 1/n octave, 1/n octave vs. time, Average FFT, FFT vs. Time, FRF, white/pink/sine/sweep sine generator (if available on hardware), color spectrogram and waterfall, tacho acquisition,
    PostProcessing:  Calculation on spectra and signals, signal edition, import of Teac/Sony files, Reporting module...
  • dBFA Recorder - Analyzer - Post-Processing Suite
    dBFA Advanced Options Pack (Sequencer, Transient/Impact, Me’scope export, Matlab Communication, Order Analysis, etc.)
• the 6-channel solution with only 6 activated channel on NetdB plateform.
  • NetdB Stand alone Recorder composed of 6 activated channels acquisition front-end, AC/DC/IEPE inputs, 2 generators, headphones and SPDIF outputs, Patented Ethernet protocol, 100GB hard disk, WIFI USB stick, Wifi Remote control software to be used with a PDA unit allowing settings, trigger levels, calibration, start/stop. PDA delivered with TFT VGA screen and  Windows Mobile 2005.
  • dBFA Recorder (2-24Ch). Recommended to use with another post-processing software able to import CMG (data signals) format
• the 12-channel solution with all the 12 activated channel on NetdB platform.
  • NetdB Stand alone Recorder composed of 12 activated channels acquisition front-end, AC/DC/IEPE inputs, 2 generators, headphones and SPDIF outputs, Patented Ethernet protocol, 100GB hard disk, WIFI USB stick, Wifi Remote control software to be used with a PDA unit allowing settings, trigger levels, calibration, start/stop. PDA delivered with TFT VGA screen and  Windows Mobile 2005.
  • dBFA Recorder (2-24Ch). Recommended to use with another post-processing software able to import CMG (data signals) format
• the 20-channel solution with a 8 channels rear card added on NetdB back board.
  • NetdB Stand alone Recorder composed of 20 activated channels (12 in Front and 8 on Back board) acquisition front-end, 20 x AC/DC/IEPE inputs, 8 Inputs with 200V polarisation switchable, 2 generators, headphones and SPDIF outputs, Patented Ethernet protocol, 100GB hard disk, WIFI USB stick, Wifi Remote control software to be used with a PDA unit allowing settings, trigger levels, calibration, start/stop. PDA delivered with TFT VGA screen and  Windows Mobile 2005.
  • dBFA Recorder (2-24Ch). Recommended to use with another post-processing software able to import CMG (data signals) format
• the 24- (or more) channel solution with a chaining of NetdB units (patented connection).

Pocket PC unit

• Pocket PC unit allowing settings, trigger levels, calibration, start/stop
• TFT VGA screen and Windows Mobile 2005

NetdB Hardware Platform

• NetdB Front-end managing activated channels, 24 bits, DC to 20 kHz
• AC/DC/IEPE* instrumented inputs
• 2 generators, headphones and SPDIF outputs
• Patented Ethernet protocol, WiFi ready
• 100GB hard disk internal HD
• Batteries operated

dBFA Suite software main features

• Recorder - Analyzer - Post-Processing
• Simultaneous signal recording and real-time multiprocessing and monitoring
• Average 1/n octave, 1/n octave vs. time
• A, B, C, Wb, and more than 20 standard weighting functions
• Average FFT, FFT vs. Time
• FRF calculation on spectra and signals
• Color spectrogram and Waterfall
• Tacho signal acquisition
• Signal edition
• Import of .wav files, Teac/Sony files, MatLab communication
• Sound Quality metrics and Criteria

Options

• Expandable to multi channels
• Order analysis, Time-Frequency, Impact testing, Sound Intensity
• Suitable for Acoustic Holography and Modal Analysis
• Complete set of transducers and accessories

Applications

Sound and Vibration measurements, analysis and reporting; Improving products design vs. NVH characteristics; NVH analysis on transportation vehicles: automobiles, motorbikes, trains, ships, aircrafts, etc.; Civil vibration on transportation infrastructure; Quality control.

Hardware NetdB

• PC Link (Type/seed): Ethernet 100MBits connector RJ45 and 2 x USB II sockets (Rear panel)
• Extention Link (Chaining): Ethernet 100MBits connector RJ45
• Pocket PC Link (Type/seed): WiFi 802.11g 54Mbits for remote control
• Storage: 100 GB HDD
• (12 hours /continuous measurement with 12 channels @51.2kHz 24bit)
• Base channel numbers: 12 (number of activated channels only!)
• Maximum throughput rate: 250 channels @ 12.8kHz over 24bits
• Channel input connectors: BNC with high rigidity frame
• Signal output: 2 x BNC connectors
• Digital Input/Output: RCA connector for SPDIF In/Out 
• Digitization: 24 bits linear 
• Sampling Frequency: 51.2kHz, 25.6kHz, 12.8kHz

Analog input Characteristics

• Input impedance: 1MOhm
• Input range:
• 10V rms (-15V to +15V),
• 1V rms (-1.5V to +1.5V),
• 100mV rms (-150mV to +150mV)
• Maximum allowable voltage: -20/+30V peak
• Sensor power supply: IEPE* - 4mA
• Coupling:  DC, AC 0.3 Hz, AC 20 Hz
• Dynamic range: 105dB
• External trigger: BNC connector 

Environmental

• Operating temperature: 0°C to 60°C
• Storage temperature/humidity/Pressure: -10 to 70°C, 10 - 90% RH (no condensation), 800 - 1050 hPa
• Operating position: Horizontal and Vertical
• Vibration resistance: 10ms-2 (9-200Hz), 3mm (2-9Hz) operating
• Shock resistance: 250ms-2 (2ms) operating
• Vibration class: EN60721-3-4 class 4M5
• Noise emission: LWA 49dBA with fan running, LWA 33dBA fan off, software selectable (ISO7779)
• EMI: EN55011, EN55014, EN61000-4.2, EN61000-4.3, EN61000-4.4, EN61000-4.5, EN61000-4.6, EN61000-4.11
• Safety: UL3101-1; CSA C22.2 No.1010.1; EN 61010-1 A1+A2

Physical

• Dimensions: 250mm(W) x 85mm(H) x 263mm(D) excluding projections
• Weight: 4.5kg

Power supply

• Battery: Internal NiMH 4000mAH, 2H continuous operation 12 channels
• Main adaptor: External Main Adaptor 100/240VAC - 50-60 Hz
• Power consumption: 20W
• Car adaptor supplied: DC 9-18V with jack

Software dBFA Suite (Recorder - Analyzer - Post-Processing):

• Simultaneous signal recording and real-time multiprocessing and monitoring, post processing analysis (Average 1/n octave, 1/n octave vs. time, Average FFT, FFT vs. Time, FRF...)
• Calculation on spectra and signals,
• Color spectrogram and waterfall,
• Tacho acquisition,
• Signal edition,
• Import of Teac/Sony files...
• Reporting Module. Analyzer and post-processing option

Software options:

• RT Automation (User-defined sequential acquisition procedure);
• Transient / Impact mode: Coordinates management, user defined windowing, Me' scope format export, Reporting Module both in Analyzer and post-processing; MATLAB communicator in Post-processing
• Order (Analysis and Tracking in Real Time and post-processing)
• Time-Frequency Transforms, De-noising, Convolution (Post Processing on signals)