Time service server K805 of the network

May 18th, 2016

Time service server of the network (LAN clock is unified, NTP clock source server, the synchronous clock of GPS the Big Dipper) Introduce

With the swift and violent development of the computer network, network application has been already very general, numerous network system of field such as electricity, petrochemical industry, financial circles ‘ Securities, bank) , broadcasting and TV engaged in ‘ Broadcast, TV) , communications ( Train, plane) When needing to keep the time of the computer to move ahead simultaneously on a large scale with time accurately. So a good time generator is very essential. In order to meet these fields to the time increasingly accurate requirement, Shanghai presents electric Co., Ltd. to develop the time service server of the network independently sharp, the products are while inheriting synchronous clock all functions of satellite, inlay the international popular NTP-SERVER service inside, provide accurate time for each network equipment and check the service with NTP/SNTP agreement, independent of other network systems, the access network of the server when can be regarded as the network school directly. The way while having many kinds of schools, easy to use.

The time service server of the network is made up of standardized software and hardware, users, according to one’s own flexible disposition of need. The device software can meet the development at full speed of computer and communication, adopt at present the most popular computer language is compiled, run on the operating system platform of the mainstream. In order to guarantee the clock system runs reliably, in the electromagnetic compatible respect of the device, apparatus manufacturer make a large number of test and improvement, apparatus not offered experience strict test for a long time in a lot of project, and measure unit in authority confirmation and test electromagnetic and compatibly through the country, every index accords with the demands for series IEC61000, reach grade and the above standard.

The technical indicator of the time service server of the network:

1. Time source: GPS signal, the Big Dipper satellite, IRIG-B yard, OCX0, rubidium atom clock, CDMA, RS232, 1PPS are available.

2. Have no time between failures (MTBF) equally Greater than or equal to 80000 hours; Average maintenance time (MTTR) : Is not generally greater than 30, service life is no less than 20 years. Needn’t be safeguarded under the normal service condition!

3. Two generations of receivers of the Big Dipper: Receive the frequency ( BD2 B1 ) : 1561.098¡À 4MHz. Receive clever acuity: -157.6dBW; Time of first localization (TTFF) : The cold is started: 32s, hot starting: 1s, loses the lock to catch again: < 1s.

4. GPS receiver receives the frequency: 1575.42MHz; Receive the sensitivity: Catch <- 160dBW, follow <- 163dBW; Catch time: When it is started that the device is cold, <2min, at the time of the hot starting of the device, <10S; Internal battery type: Lithium battery, battery life-span: ¡Ú 25000h.

5. The port of the network supports the agreement: NTP/SNTP , ARP, UDP/ Time, Telnet, SNMP, MD5, ICMP, DHCP, TFTP, NTP V4, V3, V2, V1, NTP SERVER or NTP Client can be chosen.

6. Correct time precision: Pulse, B yard: 0.1¦Ì S, one bunch of mouths: 10¦Ì S, NTP/SNTP: 0.2-10ms, PTP: 70 nS;

Main characteristic of the time service server of the network

1. Clock source: GPS signal, the Big Dipper satellite, IRIG-B yard, OCX0, rubidium atom clock, CDMA, RS232, 1PPS are available.

2. Support single GPS, single the Big Dipper, single CDMA, pairs of GPS, pairs of the Big Dipper, GPS / the Big Dipper / CDMA one pair of systematic receiver dispositions, realize much the intersection of basis and redundant time service, can intelligence differentiate the intersection of GPS and signal, the intersection of the Big Dipper and signal, the intersection of CDMA and signal, yards of the intersection of time and the intersection of basis and stability and quality of signal, B of outside, and offer many kinds of clock basis to dispose the method.

3. Have no time between failures (MTBF) equally Greater than or equal to 80000 hours; Average maintenance time (MTTR) : Is not generally greater than 30, service life is no less than 20 years. Needn’t be safeguarded under the normal service condition!

4. Support WINDOWS9X/NT/2000/XP / 2003/2008/2012, network equipment such as operating systems such as LINUX, UNIX, SUN SOLARIS, IBM AIX, HP-UX,etc. and supporting the router, exchanger, intellectual controller of NTP agreement.

5. Reveal information is abundant, can reveal information such as GPS the Big Dipper satellite number, NTP parameter, system state.

The above is the brief introduction of the time service server of the network.



Contacts: Wei YuanDong
Telephone: 8602151816732
Fax: 86021-51816733
Email: 1339639788@qq.com
Web site: http://www.ruicheng-china.cn
Address: Shanghai circles in the air in the national Building of Scien-tech garden 1 of institute of technology of Shanghai of the road No. 128 of the Yin Dynasty

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