PRO-371: Modal Analysis Starter kit

Expandable Professional package

NetdB PRO-371: A bit more flexibility and test time optimization
Progressively increasing the channel count to widen your operational capabilities in Modal Analysis with the relevant hardware and software tools!

NetdB PRO-371 meets your requirements for modal analysis tests in a wide range of situations, featuring the exact set of relevant functions for an operational system:

Fully functional dBFA Suite with Impact Testing and
3D coordinates driving menu
Accept/Reject features for pre-checking on acquired data
Force/Exponential window settings with graphical vision for easy adjustment by the user
Extraction of Natural Frequencies (values), Damping, Residues, Mass, Stiffness, Mode shapes (vector) as SDOF, MSDOF & MDOF using Poly-reference algorithm
Animation of mode shape and FRF Synthesis

Key Features

Data Acquisition and FRF calculation

NetdB-DAQ12-4ch expandable to 6, 8, 12, up to 512 for Sound & Vibration, Tachometers, other signals (see separate NetdB-DAQ12 system data sheet)
51kHz sampling frequency, 24 bits, IEPE* inputs, SPDIF & Headphones out
Operated from internal Batteries or car 12VDC
Transducers data base, Measurement set-up, Autorange, Trigger settings
Excitation modes as: Impact or Deterministic, Burst, Random, Shaker excitation, MiMo
Modal Analysis measurements as: FRF with estimators H1, H2, 1/H1, 1/H2, auto and cross-spectra Gxx, Gxy, Coherence, Time Recording
Direct export of acquired Gxx, FRF, coherence, Time histories, etc.

Modal Analysis and Signal Processing

Mode shapes, ODS, Transient Analysis, Time domain response for Non-Linear and Non-stationary time varying behavior
HP, LP, Notch Filtering, Re-sampling, Spectra operation
Single and Double derivatives and Integration (Displacement, Velocity, Acceleration)
Complete set of function as Signal Editors, Analyzer, Filtering, and Playback, FFT Analysis, 1/n analysis with Digital Filters, Waterfall and sonogram

Software Options

RPM recording and Order analysis
Sound Imaging and Mapping
Sound Quality and Sound Perception

Applications

Modal Analysis on Vehicles, R&D on components, University Projects

PRO-371 Technical Specifications

Signal input

Input impedance: 1 MOhms
Input connection: DC or AC (0,3 or 20 Hz); BNC connector
Signal conditioning: IEPE* (4.3 mA), Direct Input for voltage signals
Max voltage input: 10V RMS (15 V p-p), Overload protection
Channels Phase: < 0.5°

A/D Converter

Resolution: 24 bits sigma/delta
Sampling: 51.2 kHz max
Anti-aliasing: 140dB/octave
Offset: Automatic
Signal/Noise ratio: > 105 dB
Amplifiers: -20 / 0 / +20dB

Dimensions

Dimensions: 250 x 85 x 63 mm
Weight: 4.5 kg

Power supply

Connector: Neutrik XLR
Voltage/current: 12V-14V max 5A
Main adaptor: External Main Adaptor 100/240VAC - 50-60 Hz
Power consumption: 20W
AC adaptor supplied: AC (90-250V, 50 or 60 Hz)
Car adaptor supplied: DC 9-18V with jack
Battery: Internal NiMH 4000mAH
Battery life: 1h45 full speed running 12 channels

Vibration Transducer - Accelerometer

Type: IEPE*
Frequency Response: 0.5Hz-15kHz
Sensitivity: 7 mV/g
Measurement range: +/- 500g
Weight: 6 gm

Impact Hammer

Type: IEPE*
Sensitivity: 11 mV/N
Measurement range: +/- 440 N
Weight: 160 gm

Software dBFA Suite

dBFA: Software including Recorder - Real Time Analyzer - Post-Processing
modes: 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, white/pink/sine/sweep sine generator (if available on hardware), color spectrogram and waterfall, signal edition. Software option (included) for Impact measurements mode: Coordinates management, user defined windowing, Me'scope format export. Printed results and export of diagrams and numerical values in most common Windows forms. Customizable Report.
Me'Scope: Interactive animated display of Operating Deflection Shapes and Mode Shapes from time or frequency domain data. Single reference SDOF & MDOF modal parameter estimation, FRF synthesis, and more.

PC and operating system

OS: MS Windows XP PRO
PC Processor: PIII or more, 600 MHz or more
RAM: 512 Mb or more
Ports: Ethernet 100Mbits/s

Ordering Information:

NDB1002000-4: NetdB-DAQ12, restricted to 4 channels, AC/DC/IEPE inputs, headphones and SPDIF outputs, 100GB hard disk
SFA4050000: dBFA Software Suite: Recorder - Analyzer - Post-Processing
SFA4061000: dBFA Transient / Impact mode
COC2010000: ME'Scope VT-570 Visual Modal
CAC3003000: PCB 086C02 (IEPE* type) Modally Tuned® Impulse Hammer w/force sensor and tips, 0 to 440N, 11.2 mV/N
CPC314000: 10m BNC-BNC cable (x3)
CAC3006000: IEPE* accelerometer (A123TE, 7mV/g, 6grs, top connector) (x3
CPC3009000: Cable (MP/BC/T18/50) 5m for accelerometer (Microdot-BNC) (x3)

* IEPE: Integrated PiezoElectric Electronic

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

PRO-371: Modal Analysis Starter kit

Expandable Professional package

Key Features

PRO-371 Technical Specifications

Ordering Information:

Mesure des vibrations et des nuisances sonores