DEVICE FOR MEASURING AMPLITUDE-FREQUENCY CHARACTERISTICS OF FOUR-POLE Russian patent published in 1996 - IPC

FIELD: radio engineering. SUBSTANCE: device has voltage-controlled oscillator 1, frequency meter 2, adder 3, three digital-to-analog converters 4, 5, 6, five registers 7, 8, 9, 15, 28, address decoder 10, investigated four-pole 12, amplitude detector 13, analog-to-digital converter 14, unit 15, which generates sweep signal for indicator and video signal, indicator 16, two buffer circuits 17, 18, label generator 19, synchronization unit 20, two memory units 21, 31, which store indication data, three multiplexers 22, 30, 32, three counters 23 ,24, 26, memory unit 25, interface unit 27, reading unit 29, counting flip- flop 33. EFFECT: increased functional capabilities.