FIELD: measuring probabilistic characteristics of random processes. SUBSTANCE: device has averaging unit 1, subtraction unit, absolute value computing unit, average range determination unit having units for determination of maximal and minimal values, two integrators, analog-to-digital converter, two switches and subtraction unit. In addition device has multiplying unit, controlled amplifier having decade amplifier, switches, comparison circuit and decoder. Device also has differentiating circuit, pulse shaper, comparison unit, three counters, five AND gates, sign discriminator, pulse generator, shift register, two commutator, unit of counters, frequency divider, indication unit and univibrator. Analyzer is learned before measuring stage and learning stage has given duration and much smaller than measuring one. During learning stage analyzer is acquires information about amplitude as well as frequency characteristics of random process. This results in possibility to select step of time for process sampling as well as corresponding step of sampling level and duration of learning and measuring stages when characteristics of random process are absolutely unknown a priori while hardware and statistic errors are in given permissible limits. Average interval between adjacent extremum values of process is used as step of time for sampling. Step of sampling by level is proportional to average half-range of measured process. Duration of learning and measuring stages are determined by accumulation of given number of extremum values of process and is in inverse proportion to range of its power spectrum. EFFECT: increased precision of analysis, increased frequency and amplitude range of investigated processes. 2 dwg
