SU1636791A1 - Digital phase meter - Google Patents

Abstract

The invention can be used in radio metering technology for wide-range phase shift measurements. The goal is to improve the accuracy and speed of measurements, the expansion of the frequency range. The digital phase meter contains drivers 1 and 2, a phase converter 3 in a time interval, a generator of 4 pulses, dividers 5 and 21 frequencies, a control unit 6, elements 7 and 8, 14-18 coincidence, a controlled divider 9, counting-registering units 10 and 23, reversible counters 11 and 12, register 13, elements OR 19 and 20, trigger 22, shaper 24 short pulses. Control unit 6 contains decoder 25, RS trigger 26 and D trigger 27. The goal is achieved by adjusting the measurement time to a value multiple of the number of periods of the input signal, adjusting the weight of the counting pulses at the output of the counting recording unit 10, calculating the residual code controlled divider 9 with subsequent correction of the measurement result. 1 hp f-ly, 2 ill. sl C

Description

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Claims (2)

Claim 1. A digital phase meter comprising shapers, a phase to time converter connected by inputs to the shapers outputs, a pulse generator, a frequency divider, a control unit, two matching elements, a controlled divider and a counting-recording unit, the output of the pulse generator being connected to the clock input of the divider frequency and the first input of the first coincidence element, the second input of which is connected to the output of the phase converter at time intervals, and the output - with the first input of the second coincidence element, the synchronous input The control unit is connected to the output of one of the formers, characterized in that, in order to increase the accuracy and speed of measurements, expand the frequency range, it is equipped with two reversible counters, a register, five additional matching elements, two OR elements, an additional frequency divider, trigger, additional counting and recording unit and shaper of short pulses, the first additional matching element is connected to the inputs with the first and second outputs of the control unit, and the output m - with the input of the installation of the frequency divider, the second additional coincidence element is connected by the inputs to the first and third outputs of the control unit, and the output - with the second input of the second coincidence element, the input of the short pulse generator, the first trigger input and the first input of the third additional coincidence element, the second the input of which is connected to the output of the controlled divider and the first input of the fifth additional coincidence element, and the output to the clock input of the counter-recording unit and to the input of the second a positive counter whose output is connected to the second input of the trigger, the output of which is connected to the input of the counting mode of the second reversible counter, the second input of the fifth additional matching element and the first input of the fourth additional matching element, the second input of which is connected to the output of the pulse generator, and the output to the clock the input of the additional frequency divider and the first input of the first OR element, the second input of which is connected to the output of the second coincidence element and the first input of the second, OR element, and stroke - with the clock input of the controlled divider, the output of the additional frequency divider is connected to the second input of the second OR element, the output of which is connected to the clock input of the second reverse counter, the output of the short-pulse former is connected to the inputs of the installation of the metering and recording unit, the additional metering and recording unit and the controlled a divider, the code inputs of which are connected to the output data bus of the register, the code inputs of which are connected to the output data bus of the first reversible counter and codes E inputs of the control unit, a first output connected to the input register and the write mode input of the first counting-down counter, a clock input coupled to an output of the frequency divider, the clock input of additional countable recording unit connected to the output of the fifth further matching element. 2. Phase meter pop. 1, characterized in that the control unit contains a decoder, a controlled trigger and a D-trigger, the output of which is the first output of the control unit, and the clock input is a synchronization input of the control unit, D-input of the D-trigger connected to the direct output of the controlled trigger is the third output of the control unit, and the inverse output of the controlled trigger is the second output of the control unit, the inputs of the controlled trigger are connected to the outputs of the decoder, the inputs of which are the code inputs of the control unit.