The price of NTP time server is also related to the choice of users. How can we choose a NTP time server with moderate price and large function? First of all, we need to understand the definition, function and principle of NTP time server. Only in this way can we choose the right NTP time server.
So what is the NTP time server? The NTP time server is a time server that uses NTP network time protocol to calibrate time. It is a protocol for synchronous computers. The NTP server takes the satellite signal as the time reference and outputs time information such as NTP network, serial port and second pulse to calibrate the terminal equipment. NTP servers usually use NTP network signals to transmit time and take UTC world unified time as standard time. Then they are converted to local time according to their time zones. NTP server can identify checking time information to determine whether time information is really from NTP server, thus providing anti-interference protection mechanism to prevent virus attacks.
The NTP time server mainly takes the network time service as the main function. The standard NTP time server outputs network information, serial port information and pulse information, but if users need to add, PTP, IRIG-B code, and other time signals, the price will be different. NTP time server varies according to the different time of receiving satellite time signal source. NTP time server has equipment to support single satellite signal, and also has equipment supporting many kinds of satellite signals.
NTP time server will also affect the price according to the number of output time signals. The number of output time signals can be added to the demand. In general, the NTP time server network interface is 100 trillion, NTP throughput is 4000 times / sec, but it can also be upgraded to Gigabit, and NTP throughput is 14000 times / sec. NTP time server uses clock source to keep time. In general, the clock source of NTP time server is temperature compensated crystal oscillator. It can also select constant temperature crystal oscillator, rubidium atomic clock, tame constant temperature crystal oscillator module and tame rubidium clock module according to users' needs. The temperature compensated crystal oscillator is less than 1s within a day's time. The constant temperature crystal is punctual for several milliseconds a day, and the rubidium clock is more accurate than the constant temperature crystal oscillator. So the clock source also thinks about the price.
At present, most universities or hospitals choose NTP time server for time service. NTP time server transfers time in network form, covering a wide area, high precision and easy to use. For example, the SYN2102NTP network time server outputs 2 network time signals, and each network port is independent of the LAN. The timing accuracy of the network is 1-10ms, the throughput of the network is up to 4000 times /s, and it can give time to many devices. SYN2102NTP network time server has the functions of real-time monitoring, password authentication, firewall, SYN-flood defense, encrypted communication, heartbeat detection, remote maintenance, SNMP network management, Web management, redundant backup, WiFi wireless management and so on.
The SYN2102NTP network time server receives the satellite signal through the antenna, and then the NTP time server outputs the network time through internal transformation, and then passes it to the various devices through the switch.
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