FIELD: measurement technology. SUBSTANCE: device for measuring frequency and frequency difference of signals has phase meter unit 1, memory register 2, correlator 3, weight processing unit 4, code converting unit 5, control unit 6, reference function shaper 7. Correlator 3 comprises a subtraction unit, two connected-in-parallel channels, adder, square-rooting unit, normalizing unit, code comparator. EFFECT: enhanced accuracy. 2 cl, 6 dwg
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