FIELD: electrical communications engineering. SUBSTANCE: clock synchronizer has controlled frequency divider 1 incorporating frequency divider 2 and control element 3, master oscillator 4, storage unit 5, adder 6, switch 7, subtracter 8, error signal shaper 9, programmable counter 10, control unit 11, valve 12, random-access storage unit 13, fast Fourier transform unit 14, correcting elements 15-15, storage elements 16-16, and selector switch 17. EFFECT: reduced pull-in time, improved synchronization accuracy. 2 dwg
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