Brief introduction: NTP clock timer provides high precision GPS synchronous clock directly from the system of each satellite atomic clock (optional beidou signals at the same time, IRIG B code, OCXO, rubidium atomic clocks, CDMA signal source), using satellite timing Shanghai sharp in electric co., LTD., network synchronization and tame techniques such as frequency, low consumption, the product USES fanless design, automatic intelligent operation, maintenance free, suitable for unattended, For computer network, computer application system, process control management system, e-commerce systems, online B2B system and the preservation and maintenance of the database system need to provide the precision of standard time signal and time stamp service, has been successfully applied to IT, financial, petrochemical, government agencies, defense, broadcasting, communications, electric power, transportation, medical, water conservancy, metallurgy, security services, education and other areas of the school. Main features: 1.Clock source: GPS signal, beidou satellite, irig-b code, OCX0, rubidium atomic clock, CDMA, RS232, 1PPS optional. 2.Support single GPS, single beidou, single CDMA, double GPS, double beidou, GPS/ beidou /CDMA dual system receiver configuration, realize multi-reference redundant timing, intelligent discrimination of GPS signal, beidou signal, CDMA signal, external B code time reference signal stability and advantages and disadvantages, and provide a variety of clock reference configuration methods. 3.Mean time between failures (MTBF) is more than 150,000 hours; Average maintenance time (MTTR) : generally not more than 30 minutes, service life not less than 20 years. Maintenance is not required under normal service conditions. 4.Support WINDOWS9X/NT / 2000 / XP/vista / 2003/2008, LINUX, UNIX, SUN SOLARIS, IBM AIX, HP - UX operating system and support the network time protocol (NTP) network equipment such as routers, switches, intelligent controller. 5.Display information rich, can display GPS, network, system and other state information. Technical indicators: Network port support protocols: NTP/SNTP, ARP, UDP/ Time, Telnet, SNMP, MD5, ICMP, DHCP, TFTP, NTP V4, V3, V2, V1, NTP SERVER or NTP Client are optional. Server performance GPS clock reference mode, network time server, synchronization accuracy 1 microns User terminal synchronous timing accuracy: 1-10ms (typical value of LAN) User capacity: tens of thousands of clients can be supported NTP requests: 2400 / s GPS receiver 16-channel timing GPS receiver UTC synchronization accuracy is 30ns, supporting single star timing window mode Receive L1,C/A code signal - 1575.42mhz Tracking and locking sensitivity up to -160dBm The front panel Display GPS satellite receiving status, time, number of GPS satellites, IP of each network card, and system working status Three color indicator light Indicates whether the NTP service is started, whether the network connection is normal, whether the device is abnormal, whether the GPS is locked, etc Rear panel GPS antenna input: BNC, 1 channel, network port: rj-45, 1 channel, Ethernet interface,NTP timing TOD: DB-9, 4-way, RS232 level, time message information