The key part of the photon correlation spectrometer is a digital real-time correlator, which defines the basic features of the particle-sizing instrument. The operation algorithm of Photocor correlators exactly corresponds to the mathematical definition of the time-dependent correlation function. It enables one to reach the highest efficiency of the signal analysis and high precision of particle sizing.
State-of-the-art design of the single-board Photocor correlators is based on the latest flex-logic integrated circuits and the fast digital signal processors. The Photocor correlators are completely self-sufficient hardware devices, which accumulate data by itself without interfering with PC program operations. The correlators are optimized for light scattering applications, but they can be used as a powerful instrument of signal analysis in many others fields including velocimetry, acoustics, astronomy, etc.
The correlator Photocor-FC is a multipurpose real-time device for auto- and cross-correlation measurements built on the software-configurable flex-logic integrated circuits. A capability of further software upgrade of hardware functions is the unique feature of the Photocor-FC correlator. Currently, the software for multiple-tau and linear time-scale regimes are available. A number of real-time configurations will be developed in the nearest future (two/four correlators, analyzer of probability distribution, spectrum analyzer). Customer programs (algorithm of the device operation) will be available as well. This is the first correlator with such features.
|Input frequency||100 MHz|
|Capacity of each channel (hardware)||48 bits|
|Minimum sample time (true real-time operation)||10 ns|
|Maximum sample time||1 h|
|Number of channels||288|
|Multiple-tau mode||35 sections x 8 channels, factor 2|
|Number of monitor channels||72|
|Operation modes||autocorrelation; cross-correlation|
|Living monitor of probability distribution||hardware|
|Dimensions||125 x 110 mm|
|Power requirements||5V x 0.5A|