The PDV technology allows more reliable measurement on your high speed phenomena with unique or multiple speeds, in the range of 0 to 20 km/s with an excellent temporal and velocity resolution. A dedicated software, based on a Fourier Transform algorithm, allows a rapid visualization of the speed fields.
The multiplexing system allows the user to get 32 PDV measurement channels with only 4 digitizer channels. Other characteristic qualities are: the non-contact laser measurement, the frequency up shifting, amplification of the reflected signal.
A new X-small PDV system offers the same performance quality in a more compact (5U height) packaging. This solution allows up to 4 measurement channels.
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|Photonic Doppler Velocimeter|
|Displacement interferometer||High dynamics (>27 dB)|
|Eye safety (1.55 μm), all fibered design||Minimum reflectance required -60 dB|
|Speed measurement : 0 to 20 km/s||High sensitivity (>50 dB)|
|Speed uncertainty : Δt Δv = 150 ns.m/s||Up to 32 measurement channels|
|(function of the width of the Fourier window analysis)||Ethernet interface|
|Speed uncertainty : +/- 3 m/s for 50 ns||Triggered mode|
|Speed uncertainty : +/- 0.5 m/s for 300 ns||Low heat deposition on sample|
|Time uncertainty : 200 ps on the raw signal||-|
|5 ns on velocity after processing||Manufactured under CEA license|
|The system contains|
|High power laser (Up to 200mW by channel)||1|
|PDV measurement channels||Up to 32|
The processing software allows : the visualisation of raw signals (bin, wfm, csv and most of native file of digitizer); Time-frequency treatment and display; Multi-speed visualisation and Automatic speed extraction.