With the rapid progress of science and technology and the rapid development of economy, the accuracy, stability and portability of the timing equipment have been increasingly demanded in various fields. Therefore, the timing and types of clock timing are constantly improving, such as base station time service, satellite timing, radio timing and so on. The astronomical clock is a kind of time clock, and the astronomical clock is controlled by the precise clock of the observatory.

The astronomical clock refers to the clock server that receives the timing signals of GPS and Beidou satellites. The clock server obtains standard time information from GPS and Beidou satellites, and transacts the network to provide precise time signals for network devices, NTP real-time real-time service for the devices, and clock server outputs 1PPS (second signal) synchronous pulse signal and serial port TOD time information.

At present, there are many clock servers on the market, some of which are acting on other brands, and the performance and after-sale can not be guaranteed. Xi'an synchronous Electronic Technology Co., Ltd. is self-developed, such as SYN2151 NTP time synchronization server, based on GPS Beidou and other timing signals, and provides 1 way NTP network output can be extended to 4 way network output, the network output timing accuracy is 0.5-10ms, supporting serial port signal output and 1PPS pulse signal output and so on. Among them, NTP refers to the network time protocol used to synchronize the computer time. The NTP network has a wide range of time coverage, and it can give tens of thousands of devices at the same time, and NTP requests amount to 14000 times / sec. The SYN2151 NTP time synchronization server provides the parameter management mode of WEB, SSH encryption communication and software monitoring settings, provides the SNMP network management function, uses the latest NTP/SNTP protocol version to be accurate and reliable, and is equipped with built-in high precision constant temperature crystal oscillator for time keeping. It also selects rubidium atomic clock, tame constant temperature crystal oscillator module, tame rubidium clock module, and so on, so that the time keeping precision is higher and the time accuracy is ensured.

The clock server meets the requirements of timing equipment in many fields such as theoretical research, scientific experiments, engineering technology and industrial production. But there are still many suppliers of clock servers in the market, such as Shanghai, Beijing, Guangzhou, Sichuan, Shenzhen and other places, but there are fewer suppliers, and some suppliers are acting overseas products. Some suppliers do not have core technology. Some suppliers produce relatively simple products, which leads to inconvenient after-sales service, immature product performance, lack of core technology, small selection of products, production of time service equipment, failure to provide test equipment, and inconvenience in the use process.

Xi'an synchronous Electronic Technology Co., Ltd. is a manufacturer specializing in the production of time service equipment. It focuses on time and frequency products for nearly 10 years. Its products are self developed, produced and sold, and has nearly 1000 square meters of production workshop. It has independent research and development technology, perfect after-sales service, stable and reliable product performance, and convenient after-sales service. At the same time, the registered brand Xi'an has been synchronized with the title of high-tech enterprises. Now, the cooperative units have research institutes, military enterprises, scientific research units, schools, hospitals, power plants, factories and so on, which can meet the needs of all walks of life.

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