Digital Measuring

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Basics of Digital Vibrometry

Digital vibrometer systems utilize the latest technologies for digital signal acquisition and processing. They are based on a purely numerical Doppler signal decoding technique, where displacement and velocity information is not recovered by analog demodulators but by powerful data processing algorithms.

Various Polytec solutions are suitable for difficult and stringent applications as measurements in data storage, micro-electro-mechanical structures (MEMS) or hearing dynamic applications.

Applications

Primary Vibration Calibration by Laser Vibrometry
(from LM INFO Special 1/2003)
 

Products

PDV-100 Portable Digital Vibrometer

IVS-300 Digital Laser Vibrometer

CLV Compact Laser Vibrometer

VDD Digital Vibrometer

OFV-5000 Modular Vibrometer

PSV-400 Scanning Vibrometer

Advantages of Digital Demodulation

Very high and stable accuracy, linearity and flatness of frequency response

For calibration purposes only digital LDVs are applicable

Displacement resolution down to an impressive 0.002 nm (VDD)

Velocity resolution down to 0.02 µm/s/ÖHz (PDV-100, IVS-300) 

 

 
 Copyright 2007 Polytec GmbH Technical specifications are subject to change
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PDV-100 Portable Digital Vibrometer

Customers requiring a turnkey solution, that is portable, affordable and rugged will fully appreciate the advantages of the PDV-100.

  • Battery option for true portability and convenience at under 2.7 kg

  • The first stand-alone laser Doppler vibrometer to incorporate digital decoding electronics

  • In addition to the conventional analog output, a S/P-DIF standard digital output connects easily to sound cards, bypassing expensive data acquisition electronics


 Features | Technical Data | Applications | Download |
PDV-100 Portable Digital Vibrometer

IVS-300 Digital Laser Vibrometer

The new IVS-300 is a digital integrated single box vibrometer, specifically developed for non-contact vibration measurement in production test applications.
 

  • It exploits the latest digital signal processing techniques to ensure accurate and repeatable measurement from un-cooperative surfaces
     
  • Features a robust and compact design, sealed to IP-64 standard to cope with the challenges of harsh industrial areas



 Features | Technical Data | Accessories | Download |
IVS-300 Industrial Vibration Sensor

OFV-5000 Modular Vibrometer Controller

The core of Polytec’s latest state-of-the-art laser vibrometer systems M

  • Modular design to be tailored to specific or multiple applications
  • A range of new features that make non-contact vibration analysis even more precise, simple, flexible and rewarding
  • Can be incorporated as part of a small scale lab test, or expanded all the way up to a full scanning vibrometer system

 Features | Technical Data | Decoders | Download |
OFV-5000 Vibrometer Controller

VDD PC-Based Digital Vibrometer

Digital Laser Doppler vibrometers offer answers when analog LDVs are pushed to their resolution limits.
 

  • For very difficult and stringent applications as measurements in data storage, micro-electro-mechanical structures (MEMS) or hearing dynamics

  • Combination of highest performance data acquisition, comprehensive VibSoft Software package and analog front-end

  • For calibration purposes only digital LDVs are applicable

 


 Features | Technical Data | Applications | Download |
VDD PC-Based Digital Vibrometer

PSV-400 Scanning Vibrometer

State-of-the-art measurement technology for the analysis of structural vibrations. Entire surfaces in the mm² to several m² range are rapidly scanned and automatically probed with flexible and interactively created scan grids. S
 

  • For resolving noise and vibration issues in the automotive, aerospace, commercial manufacturing and R&D markets

  • Full analysis of vibration data, including graphing, animation and data export


 Features | Technical Data | Accessories | Download |
PSV-400 Scanning Vibrometer