This paper mainly describes the functional characteristics of the central clock in the application of the time synchronization system, illustrates the optimization characteristics of the center clock in the development of the time synchronization system, and makes a brief explanation of the system structure of the central bus clock and the whole time unified system.

The center clock is the core equipment used in the time synchronization system. In a complete time synchronization system, the center clock can receive the satellite standard time signal received directly from the antenna, and can also receive the unified time signal obtained from the external device directly, and transfer it to the subordinate equipment through its own program function, so as to provide for the lower level transmission equipment or the client equipment.For a standard uniform time source signal.

In the time synchronization system, the earliest name of the center clock is derived from a time synchronization system that is more complex than before. In the application of the system, besides the satellite antenna, the external clock signal transmission equipment, the central clock equipment, the lower transmission equipment and the client equipment, there is also a separate connection to separate the central clock. Receiving devices, such as the GPS receivers we saw in some early systems, Beidou receiver equipment, and some systems also include devices that transform the timing signals from the center clock, such as specific communication converters in time synchronization systems, time code distributors, network distributors, and 485 converters, etc., which is a relatively complex time synchronization operation system. 。

The relative complexity of the central clock synchronization system is due to the relatively backward integration of time and frequency technology and technology before the domestic market. In recent years, with the development of domestic technology, the application of the center clock in China has gradually changed from complexity to simplification. At the same time, due to the rapid popularization of the computer field, the synchronization of all the electronic systems has become the basic guarantee for the safe operation of the whole system.

In order to reduce the cost of material and manpower, the center clock can be used in the time synchronization system alone in the current market application, and can be used as a receiving time source, and can directly serve time to the external clients. At present, the center clock is required to be equipped with a single center clock device, no matter whether it is used for network time service, serial port time service, B code timing, and so on. For the central clock equipment equipped with satellite time source, the satellite antenna can be equipped directly, and the time source for external signals from other devices only needs to be connected according to the corresponding protocol. The functional requirements can be completed.

At present, Xi'an synchronously sells SYN series time service equipment to meet the timing characteristics of the center clock. Users should contact our business personnel if you want to know more about the specific use of the center clock.

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