Clock synchronization system

Abstract

The invention relates to a clock synchronization system. The clock synchronization system comprises a built-in GPS receiver, a test circuit board, a primary port, multiple secondary ports and a powerinterface, wherein the built-in GPS receiver is used for receiving GPS signals output by an external GPS antenna to lock a GPS satellite and outputting 1PPS clock signals and TX differential signals after the GPS satellite is locked; the test circuit board is connected with the built-in GPS receiver, the primary port and the multiple secondary ports, and is used for outputting the 1PPS clock signals and the TX differential signals output by the built-in GPS receiver to the primary port and the multiple secondary ports; the primary port and the multiple secondary ports are used for outputting the received 1PPS clock signals and the received TX differential signals to equipment which is connected with the primary port and the multiple secondary ports and needs clock synchronization to achieve clock synchronization of the equipment; the power interface is connected with the built-in GPS receiver and the test circuit board, and is used for supplying power to the built-in GPS receiver and the test circuit board after the power interface and an external power supply are turned on. The clock synchronization system is low in cost and short in synchronization time.

Description

【Technical field】 [0001] The present invention relates to the technical field of clock synchronization, in particular to a clock synchronization system. 【Background technique】 [0002] The traditional clock synchronization system uses rubidium clock or high stability crystal oscillator to realize the clock synchronization of the equipment. The advantage is stable performance, but the disadvantage is high price and long synchronization time. 【Content of invention】 [0003] The object of the present invention is to overcome the disadvantages of the above technologies and provide a clock synchronization system with low cost and short synchronization time. [0004] A clock synchronization system provided by the present invention includes: [0005] Built-in GPS receiver, used to lock the GPS satellite after receiving the GPS signal output by the external GPS antenna and output 1PPS clock signal and TX differential signal after locking the GPS satellite; [0006] The test circ...

AI Technical Summary

Problems solved by technology

[0002] The traditional clock synchronization system uses rubidium clock or high stability crystal oscillator to realize the clock synchronization of equipment. The advantage is stable performance, but the disadvantage is high price and long synchronization time.

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