In the main operational mode the range of measurements includes 8 energy channels. The instrument consists of two units: detector unit and electronics unit. Two pairs of silicon detectors are used,before one of them in each pair a magnetic filter is placed. The filter deflects from the field of view the electrons with energies lower than 600 keV. The mylar foil is placed before the other detector in each pair to capture the protons with energies up to 400 keV.

The electronics unit is based on the M80C85 processor, the amplified signals are accumulated in 8 energy channels during 150 ms and then are transformed to the digital and analog form for the instrument data analysis.

K.Kudela - Institute of Experimental Physics, Slovak Acad. Sci., Kosice, Slovakia.
E.Sarris - Democritos University of Trace, Xanthi, Greece.
J.Simunek - Institute of Atmospheric Physics, Czech Acad. Sci., Prague, Czech Republic.

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