Laser Scanning-Vibrometer

Scanning laser Doppler vibrometry is a high-speed imaging measurement method for the visualization of vibrations. Scanning laser Doppler vibrometers (SLDV) from OptoMET work on the non-contact measuring principle and provide precise insights into the dynamic behavior of vibrating structures. They can find and visualize vibration modes and eigenmodes, capture the propagation of surface waves, validate FE models, characterize vibration processes and determine modal parameters.

Imaging vibration measurement

The Scan Series combines for the first time the superior signal quality of SWIR laser vibrometry with the informative value of imaging methods by scanning the objects under test on a flexibly definable point grid. Different measurement surfaces, wider coverage and measuring ranges are the key to new fields of application.

Scanning vibrometry makes it possible to test entire workpieces automatically in one measurement process without contact and without influence on the object and to capture local resonances and global vibration modes with low effort.

The acquired measurement data can be visualized by means of the analysis software over time and frequency as well as in the form of three-dimensional animations.

Compact, portable and intuitive Handling
SWIR laser source and large aperture with best optical sensibility
Open data and control interfaces
Vibrational velocities up to ±24,5 m/s
Displacement resolutions down to 50 Femtometers
End-to-end digital workflow
3 analog outputs with a sample rate of 160 Msamples/s
GBit Ethernet Digital Output
Remote update und upgrade via Ethernet

Technical data

Category	Characteristics
Measured quantity	Velocity, Displacement, Acceleration
Signal processing	Digital (OptoMET UltraDSP)
Frequency bandwidth	DC bis 1 MHz
Maximum velocity	24,5 m/s
Working distance	Up to 100 m
Scan angle (h x v)	50 ° x 40 °
Camera	Full HD 1080p, 30x optical zoom
Ethernet Digital Output	1 GBit/s
BNC analog Outputs	Displacement, velocity, acceleration, signal-generator outputs
BNC analog inputs	Measurement input, 2 x reference inputs
	24-bit A/D converter per channel
	Support for IEPE (Integrated Electronic Piezoelectric) inputs
Laser wavelength	Measurement laser: output power: <10 mW, eye-safe, class 1
	Targeting laser: 510-530 nm
Laser safety class	Messlaser: Ausgangsleistung <10 mW, Klasse 1
	Targeting laser: output power: <1 mW, eye-safe, class 2
Operating temperature range	+5 ... 40°C
Dimensions	Length x width x height (excluding handle): 450 x 224 x 180 mm
Weight	12kg
Power supply	110 -240V AC (50-60Hz) oder 15 V DC
Single-Point operation mode	Max. frequency 10 MHz
	Max. velocity 24,5 m/s

Available decoders

A wide variety of high-performance real-time decoders are available for the evaluation of the interferometric measuring signals. The OptoMET UltraDSP technology enables the measurement of frequencies up to 10 MHz (for Single-Point Operation Mode) and vibrational velocities up to 24.5 m/s, displacements can be resolved to less than 100 fm. All vibrometers incorporate a velocity decoder, and displacement and acceleration decoders are optionally available. Numerous measuring ranges per decoder ensure that measurements can always be performed with the optimum sensitivity.

Decoders can be easily retrofitted or upgraded. Start with a basic system and adapt the capabilities of the measuring instrument as required. This requires no return of the instrument to the factory and no waiting times for your production or research project. The table below provides an overview of the configuration options. We will also be happy to assist you in the selection of the best decoder for your measuring task.

Description	Decoder Name	Number of measuring ranges	Max. vibrational velocity	Max. Frequency (Scan operation mode)	Max. Frequency (Single-Point operation mode )	Comments
Basis	D-VD-1S	8	5 m/s	80 kHz	500 kHz	Required
	D-DD-1N	19			500 kHz	Optional, for Single-Point operation mode
	D-AD-1N	8			500 kHz	Optional, for Single-Point operation mode
Sense	D-VD-2S	12	12 m/s	80 kHz / 1 MHz	1 MHz	Required
	D-DD-2N-I	19			1 MHz	Optional, for Single-Point operation mode
	D-AD-2N-I	12			1 MHz	Optional, for Single-Point operation mode
High Speed	D-VD-3S	11	24,5 m/s	80 kHz / 1 MHz	2,5 MHz	Required
	D-DD-3N	19			2,5 MHz	Optional, for Single-Point operation mode
	D-AD-3N	11			2,5 MHz	Optional, for Single-Point operation mode
Hochfrequenz	D-VD-4S	9	12 m/s	80 kHz / 1 MHz	10 MHz	Required
	D-DD-4N	19			10 MHz	Optional, for Single-Point operation mode
	D-AD-4N	9			10 MHz	Optional, for Single-Point operation mode
Master	D-VD-5S	14	24,5 m/s	80 kHz / 1 MHz	10 MHz	Required
	D-DD-5N	19			10 MHz	Optional, for Single-Point operation mode
	D-AD-5N	14			10 MHz	Optional, for Single-Point operation mode