Why deployed in the network? Network clock synchronization system (clock synchronization server, network timing equipment, GPS synchronized clock)?
With the rapid development of computer networks, network applications have been very common, such as electric power, finance, communications, transportation, radio and television, security, petrochemical, water conservancy, national defense, medical, government agencies, IT and other areas of the network system needs to be in a wide range of to keep the computer time synchronization and clock accuracy, but the computer's time is based on the computer crystal oscillated at a fixed frequency, due to the crystal of the differences can lead to the generation of accumulated errors in computer time. From the business impact point of view, because of time inconsistency, it is impossible to deduce the specific time of business. From a security impact perspective, the logs of all devices (e.g., DVRs in video surveillance) must reflect the exact time because the time is not standardized, and security-related tools will be useless.
So having a good standard time-keeping device is essential. In order to adapt to these areas for the time more and more precise requirements, Shanghai Ruicheng Electric Co., Ltd. carefully designed, independent research and development of the K series of network clock synchronization system, the device to GPS satellite signals as the time reference, while optional BeiDou satellite, CDMA time source, etc., embedded in the international popular NTP-SERVER service, NTP/SNTP protocol to synchronize the network all the computers, DVRs, controllers and other equipment. It can synchronize all computers, DVRs, controllers and other devices in the network with NTP/SNTP protocol to achieve network clock synchronization.
RuiCheng K series network clock synchronization system has three models to choose from: K806C has one 10/100M adaptive Ethernet port; K806D has two physically isolated 10/100M adaptive Ethernet port; K805 can be configured at the same time 1-7 physical isolation of the 10/100M adaptive Ethernet port, can meet the requirements of different customers. When one port fails, it will not affect the normal operation of other ports, which completely guarantees data security.
Network clock synchronization system working mode
Active/passive symmetric mode: one-to-one connection, both sides can synchronize each other or be synchronized by the other side, the first to send an application to establish a connection to the party working in active mode, the other party in passive mode. This mode is suitable for configuring redundant time servers.
Client/server mode: basically the same as active/passive mode. The only difference is that the client side can be synchronized by the server, but the server cannot be synchronized by the client.
Broadcast mode: one-to-many connection, the server, regardless of the mode in which the client is working, actively sends out the time information, and the client adjusts its own time from this information, at this time, the network latency is ignored, so there is a loss in accuracy.