16-XLR-NVH
IEPE interface 16-XLR-NVH is a high-precision portable data acquisition system.
16 simultaneously sampled channels with 24-bit resolution precisely measure all IEPE sensor signals with frequencies from 10 Hz to 20 kHz.
The measuring range with 6.7 volt peak is optimized for the measuring range of IEPE sensors at a bias voltage of 12.5 volts.
The 16-XLR-NVH comes with NVH Analyzer Pro software and is a
perfect measurement and analysis solution for the professional
NVH engineer.
The 16-XLR-NVH system is an affordable investment as it combines the functions of the measurement data recorder and post-process analysis with real-time analysis functions in one device.
Features:
- NVH Analyzer Pro Software
- Flexible IEPE channel count up to 16 channel + 2 RPM
- SPL measurements (A, B, C, Z weighting) S, F, I – Leq
- ISO 9614 sound power measurements
- Machinery vibration measurements
- Noise and vibration monitoring
- Human vibration measurements
- Quality assurance EOL
- Engineering services
- Environmental noise
- Impulse Hammer Test
- Structural analysis
- Frequency analysis
- Order analysis
Technical Data
16 Analog inputs | BNC IEPE Input |
|---|---|
2 Line Input / Tacho | ±6.7 Volt Peak |
Resolution | 24 bit Sigma Delta ADC |
Frequency range Dynamic range @ 48 kHz A-weighted Unweighted |
10 Hz to 22 kHz 114 dB 106 dB 103 dB |
Input voltage range | ±6.7 Volt Peak |
Input coupling | AC/IEPE selectable |
IEPE Sensor Supply | 4 mA @ 24 Volt |
EPE Sensor input impedance | 5 kΩ |
A/D dynamic range, IEPE to converter (typical) | 109 dB |
Power | |
Switch-mode power supply Autorange | 100-240 V, (50/60 Hz) |
Power consumption | 30 W |
Physical | |
Standard operating temperature range | 5°C – 40°C (41°F – 104°F) |
Dimensions | 333 x 157 x 95 mm (13.1 x 6.2 x 3.7 in) |
Weight | 3.9 kg |
NVH Analysis – NVH Analyzer Pro
Function Overview
REALTIME DATA PROCESSING | GRAPHICS AND VISUALISATION |
|---|---|
User interface | Configurable graph screens |
Time domain | Recorder (1 to 16 Ch, real-time autoscaling) Scope (trigger, persistence, envelope), Analog/digital meter, tabular display, overload indicator |
Multi domain | XY recorder (Lissajous), 2D graph, Orbit graph FRF plot (amplitude/phase/real/imaginary vs frequency) |
Application specific | FRF geometry, Modal circle, Rotor balancer, Harmonic FFT, Vector scope Auto-generating of displays with typical application setup |
DATA IMPORT | ASCII *.txt WAV *.wav MP3 *.mp3 Stiegele Datasystems MicroEdition, *.mdf TEAC TAFFmat Format, *.hdr, *.dat |
DATA EXPORT | ASCII *.txt Excel *.csv WAV *.wav |
FILTERING | |
IIR | Low pass/high pass/band pass/ 2nd to 6th order, Butterworth |
STATISTICS | |
Calculation base | Time based |
Types | RMS, Average, Peak-Peak |
Data range | Running, Triggered, Start-Stop |
REFERENCE CURVES | |
Types | time, value, dual-value, vector, XY, frequency domain with interpolation |
TIME DOMAIN | ANALYSIS |
Integration/Derivation | single/double with adjustable filter, automatic unit conversion (e.g. acceleration to velocity to displacement) FFT |
FFT ANALYSER | |
General | multiple independent FFT analyzers at the same time |
Amplitude types | amplitude FFT (Ampl, RMS, Power, PSD, RMS SD), Complex FFT (Real/Imag/Ampl/Phase) |
Windowing | Hanning / Hamming |
Window overlap | 0, 10, 25, 50, 66, 75, 90 % |
Triggered FFT | triggered time-range with pre- and post-trigger as input, auto calculation of window resolution, averaging of triggered FFT‘s, e.g. for bump – impulse hammer test application |
DC cut off | 0,5 Hz |
FFT block size | 26, 51, 101, 201, 401, 801, 1601, 3201, 6401, 12801, 25601 |
Acoustic weighting | A, B, C, Lin (Z) |
Octave | 1/3, type; Lin/A/B/C weighting, Lin/Pk avg with overlap |
Visualization | amplitude axis with real-time autoscaling: Lin/log/0dB/reference dB/Sound(A) |
Post processing | possible to add/change all calculations offline on the stored raw data |
Spectrum markers | Free |
ORDER TRACKING | |
Frequency source | Counter: optical tacho, proximity, pick-up probe (1 pulse/rev), optical strip tape probe (with bl/wh tape, algorithm for determining number of pulses), 1-, 2-, 3- tracks encoder, gear tooth with missing teeth (e.g. 60-2), CDM, CDM with zero RPM channel: any analog speed channel, virtual (synthesized RPM channel, also in post-processing) Analog pulses: analog signal (e.g. 60-2) / analog tacho + angle sensor math |
Input Ch. for analysis | any analog input channel, e.g. IEPE accelerometer, microphone, etc… |
Visualization | 3D graph, Order and Frequency spectrum, Waterfall FFT real time extraction of single spectral lines of matrix Orbit plot, XY recorder, Bode plot, Nyquist plot of any order, any signal vs RPM |
Calculation criteria | Runup / Coast down / Both directions with RPM limits and Delta RPM and/or Delta Time |
Order FFT | from 8 to 256 orders, resolution from 1 to 1/64 |
Harmonics | extract overall RMS and amplitudes/phases/Real/Imag of selectable orders (from sub-orders e.g. 0.1x, 1x, 2x, 3x to max order) in Time domain & RPM domain |
Post processing | possible to add/change all calculations offline on the stored raw data |
Data export | Complex data (Real/Imag/Ampl/Phase) in any format, see Software Export section |
TORSIONAL VIBRATION | |
General | high precision rotational and torsional vibration and slippage measurement, by use of 2 rotary encoders |
Frequency source | optical strip tape probe (with bl/wh tape, algorithm for determining number of pulses), 1-, 2-, 3- tracks encoder, gear tooth with missing teeth (e.g. 60-2), CDM, CDM with zero |
Angle accuracy | up to 0,00075° at 10 000 rpm |
Angle resolution | up to 0,06° at 10 000 rpm |
Features | Rotational DC filter (0,1 to 10 Hz), compensation of uncentered encoder mounting |
Output | Rotational angle/velocity, Torsional angle/velocity |
Visualization | angle based view, time domain |
MODAL TEST | |
Impact hammer method | roving hammer/roving accelerometer moving through points, averaging of multiple hits, double hit rejection, rejecting of hits (action buttons), grouping of sensors, adjustable excitation, and response window |
Free-run mode | Function generator (Apollo Series) for shaker excitation (swept sine, burst, chirp…) Hanning/Hamming windowing with overlap 0, 25, 50, 66, 75 % operating deflection shapes (Spectral ODS) |
FRF | Receptance, Effective Mass, Mobility, Impedance, Dynamic Compliance, Dynamic Stiffness, Transmissibility |
Modal Parameters | Mode Indicator Function (MIF), extract exact frequencies and damping factors with Modal circle fit (Option) |
Post processing | FRF from stored raw data, in free-run mode |
Geometry | Geometry editor, load, save, import models in UFF (UNV) format (Option) |
Animation | movement of nodes for selected frequency (place marker), change speed and amplitude (Option) |
Data export | Complex data (Real/Imag/Ampl/Phase) in UFF (UNV) format or any other, see Software Export section |
HUMAN BODY VIBRATION | |
General | module for judging vibration levels for risk of damage to the human body |
Supported types | Hand arm |
Compliance | to ISO 8041, ISO 2631-1, ISO 2631-5, ISO 5349 standards |
SOUND LEVEL | |
Frequency weighting | A, B, C, Lin (Z) |
Time weighting | Fast, Slow, Impulse |
Octave plot | 1/3 Lin/A/B/C/ weighting, Lin/Pk avg with overlap |
Supported standards | IEC 60651, IEC 60804, IEC 61672 |
Outputs | Sound pressure level, any combination of Frequency and Time weighting, Leq, Lpk, Lim, LE overall or on custom statistical rate, percentile levels (1, 5, 10, 50, 90, 95, 99 %) |
More features | real-time narrow band FFT, frequency weighted raw channel |
Calibration | auto-calibration of scaling factor with reference calibrator (1kHz, 94dB, 114 dB acc to IEC 60942:2003) |
BALANCING | |
Application | for rigid rotor running below its resonance frequency, based on order tracking (amplitude & phase), single- and dual-plane |
Supported tacho inputs | Counter: optical tacho, proximity, pick-up probe (1 pulse/rev), optical strip tape probe (with bl/wh tape, algorithm for determining number of pulses), 1-, 2-, 3- tracks encoder, gear tooth with missing teeth (e.g. 60-2), CDM, CDM with zero RPM channel: any analog speed channel, virtual (synthesized RPM channel, also in post-processing) Analog pulses: analog signal (e.g. 60-2) / analog tacho + angle sensor math alarm output if velocity exceeds predefined value weight splitting |
Visualization | Vector polar plots of 1st order of all runs |
Sequence | step-by-step guidance through procedure: initial run, trial mass run, correction mass run, repeat steps if needed |
Features | x and y direction balancing at the same time, when using triaxial sensor |
SOUNDPOWER | |
Standards | ISO 3741 (noise source in reverberation test room), ISO 3744 (engineering grade, free field over reflective plane), ISO 3745 (precision grade, anechoic or hemi anechoic room) |
Geometries | Parallelepiped, Cylindric, Hemisphere, Sphere |
Microphones | 10 number of microphones; positions will be calculated according to entered geometry and size, floor / 1 wall / 2 wall setup |
Measurement | Guided sequence, previous/next group (action buttons), background noise/sound measurement, with repeatability check, minimum measurement duration & level plausibility check and warnings, grouping of microphones |
Octave | 1/3 octave |
Correction methods | C1 and C2 meteorological, K1 background noise and, K2 room noise (mean absorption grade, reverberation time, K2 editor) |
IEPE Interface for Linux DAQ – Windows DAQ
IEPE Sensor Interface Plug.n.DAQ Lite is a compact 2 channel IEPE data acquisition device for recording and analysis.
The IEPE DAQ features the widespread USB interface and requires no driver installation.
In addition to AC inputs, it directly supports IEPE-type sensors, such as microphones and accelerometers.
Three fixed input ranges of 1 volt, 5 volts or 10 volts allow an optimal sensor signal-to-noise ratio adaptation.
Filters on the input and instrumentation quality amplifiers ensure reliable data.
With a bandwidth up to 24 kHz per channel and simultaneous sampling Plug.n.DAQ Lite is highly flexible and may be used with all software packages supporting USB audio devices.
It comes in a rugged aluminum housing, prepared to go wherever the measurement job requires.
Supported operating systems: Android – Linux – Windows – macOS
IEPE Interface – Plug.n.DAQ Lite
Analog Input | 2ch single ended BNC, IEPE |
|---|---|
Impedance | 100 kOhm |
IEPE power fixed | 21 Volt / 4mA |
Fixed input range | 1, 5 or 10 Volt Peak |
Bandwidth | 1 Hz to 24 kHz (-3dB) 10 Hz to 22 kHz (-0.5dB) |
Sampling Frequency | 48 kHz, – 44.1 kHz – 32 kHz – 22.05 kHz 16 kHz – 11.025 kHz |
Absolute accuracy | 1 % typical |
Gain accuracy | 0.2 % or better |
Distortion | < 0.05% |
SNR | 90 dB or better |
Pass band ripple | 0.05 dB |
Powered by USB Port | Power consumption < 1W |
Temperature range | +/-0 to +50 °C |
Dimensions | 57 (w) x 104 (d) x 28 (h) mm |
Weight | 110 g |
IEPE Interface Applications:
- Impuls Hammer Test
- Sound Test
- Vibration analysis
- Structural analysis
- Modal analysis
- Machine maintenance