Phase measurement method and phase measurement device

Abstract

The invention relates to the field of communication timing, and provides a phase measurement method and a phase measurement device. The phase measurement method comprises the following steps of: shaping the signals of measured sources by using a shaping module provided with at least two shaping circuits; polling shaped output signals of various paths of measured sources, and triggering to select the output signals of the effective shaping circuits to serve as measured source signals through the changes of rising edges or falling edges of the output signals; calculating frequency values corresponding to the measured source signals, and outputting IPPS signals corresponding to the measured source signals; and selecting a path of IPPS signal corresponding to the measured source signals to serve a main comparison source, and respectively comparing the remaining IPPS signals corresponding to the measured source signals with the main comparison source to obtain phase differences. The test environment construction is simple, the equipment is simplified, the cost is relatively low, and the working efficiency is improved.

Description

technical field [0001] The invention relates to the field of communication timing, in particular to a phase measurement method and a phase measurement device. Background technique [0002] In the field of communication timing, it is often necessary to measure the phase deviation between the output frequency of two devices or several devices and a standard source to ensure the synchronization performance between devices and between networks. At present, in order to solve the phase deviation measurement between two or more sources under test, it is generally necessary to build a test environment before testing. The test environment required for a source under test corresponds to a set of equipment, which includes shaping circuits, frequency division circuits, frequency counters, and reference sources, etc. [0003] In the process of implementing the present invention, the inventor found that the related technology has the following problems: the existing phase deviation measu...

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Problems solved by technology

[0003] In the process of implementing the present invention, the inventor found that the related technology has the following problems: the existing phase deviation measurement needs to build a corresponding shaping circuit and frequency division circuit according to the amplitude and waveform of the source under test to convert the signal of the source under test into a signal that can be measured The counting signal that the frequency meter can accept, the test environment is complex to build; at the same time, each additional source under test needs to add a set of equipment, and a set of equipment can only test the phase deviation between a pair of frequencies at a time, equipment redundancy, Expensive and not very productive

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