Abstract
A statistical threshold meter of shaper-discriminators, used in detectors of the Baksan Underground Scintillation Telescope, is described. The device is based on an ATmega103 microprocessor. The principle of operation and block diagram of the device are given. The application of the device reduced the adjustment time of the shaper-discriminators by a factor of dozens, and, in addition, due to the use of statistical methods in the program code of the microprocessor, the threshold adjustment accuracy went up by a factor of 2.5 as compared to the previous adjustment method. The device allows one to diagnose faults in electronics of the anode and 12th dynode circuits and to distinguish photoelectron multiplier tubes with high noise levels.
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