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NTP time server
NTP time server

support SNMP, with the serial port to enter support HTTPS, can login in web to administrate TOD/1PPS/10MHz output support

The network synchronized clock of high accuracy supplied by GTT100 series of network time servers directly comes from each satellite atomic clock in GPS system (may also choose other satellite time service system as the time reference source in according with users’ request). There is an integration of a 12 channel GPS time service receiver in the inside of GTT100. It can provide high-accuracy time service and synchronized service for network anywhere in the world.

One of the characteristics of GTT100 series of network servers is the friendly user interface. GTT100 series support the practical application of remote access to network administrator. The built-in state display control and the server control are both operated through a sandard interface. GTT100 series of network time servers permit users upgrading the system through FTP remote access. The 10/100M self-adaptive ethernet interface of GTT100 series can enable you to join it up to the existing network conveniently.

The apperance of GTT100 series of network servers symbolizes a major breakthrough in synchronization technology. It combines the satellite time-service synchronization technology with the data processing technology of high speed and large capacity. It also provides the user interface based on ethernet and supports many kinds of network protocols.

GTT100 series of network time servers focus on providing the high-quality products on time service and the synchronized service for all the servers and terminal devices of the entire network. It can be widely applied in all domains of national economy, for example, telecommunication, banks, securities, electric power system, industry, taxation, public security offices, national defense, commercial affairs and so on. It supplies precise and standard time signal for the computer network, the computer application system, the information system, the communication system, the flow control management, the special equipment and so on. Besides, the running quality and quality control of the equipment and system are also raised by a large margin for users.

Global Positioning Satellite (GPS) signals act as the reference source of  GTT-100 network time server. The time reference contained in the GPS satellite signals synchronizes with the universal time coordinated (UTC). The long-term frequency stability has achieved the10-13 level of magnitude of cesium atomic clock, which is equivalent to be only 1 second slower during 30 years. To adjust local time with this reference signal can eliminate the accumulation of deviation resulted from the low accuracy of local clock time and also can greatly improve the timing precision of the server. GTT-100 network time server use the professional GPS timing receiver. It can receive and lock the satellite signal fast and reliably.

NTP protocol (Network Time Protocol) is a common international network timing protocol. Its principle is through the client to launch a time polling to the server after an interval of time. According to a certain filtering algorithm it can calculate the time deviation between the server and the client as well as the propagation delay caused by network transmission. Then according to these two parameters to adjust the client's local time and make it consistent with the server. Compared to other time calibration prorocols, NTP protocol can  eliminate the impact caused by network transmission delay, so it can provide high-precision timing services. Detailed description can be referred to the latest protocol standards documents RFC1305 and RFC2030. GTT-100 network time server can be compatible with NTP v2 / v3 / v4 in various versions.

NTP time server

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