NTP、GPS、 Localization of Beidou Time Service Server

NTPTheGPSOverview of domestication of Beidou timing server

NTPTheGPSBeidou Time Service Serverlocalization(Beidou Time Service Server,GPSNetwork clock,Time synchronization device)It is a high-performance rack mounted product developed by Shanghai Ruicheng Electric Co., LtdGPSBeidou synchronous clock product, using high-precision timing typeGPSThe Beidou module and precision time synchronization technology have the characteristics of high timing accuracy, stable operation, small error, easy installation, economic practicality, fully automatic intelligent operation, and maintenance free, making them suitable for unmanned operation.

This product is widely used in sectors such as power, broadcasting and television, telecommunications, healthcare, transportation, petrochemicals, etc., especially suitable for power systems. The product can meet the requirements of time synchronization in power grid automation and can be widely used in relay protection, safety automatic devices, fault recorders, etcRTUIn various devices such as scheduling automation systems and computer monitoring systems.

NTPTheGPSThe Beidou timing server has the dual nature of a master clock and an extended clock. The device clock source can be flexibly configured, including BeidouGPSSatellite input board, which can be used as a master clock system application; configurationBThe code input board or network board can be used as an extended clock application.

This product can simultaneously receive Beidou andGPSSatellite signal, realizing Beidou satellite andGPSDual system redundant backup, providing long-term time scale information for synchronization and external timing; External input sources (includingIRIG-B（DC）Synchronize with network timing as a time reference and provide external timing; When both satellite and external clock sources are unavailable, the internal clock algorithm of the system provides high-precision time information stably for a certain period of time. Clock control algorithm, automatically selects clock source, and switches clock sources without loss. Beidou andGPSAutomatic switching between satellite sources or between satellite sources and external input sources; Input two channelsBImplement dual system redundant backup of code information to provide time scale information. two routesBThe code source can be automatically switched and lossless switching can be achieved.

NTPTheGPSThe Beidou timing server adopts a fully modular design, plug and play, flexible configuration, and is composed ofGPSBeidou receiverBCode signal input, rubidium atomic clock, constant temperature crystal oscillator, redundant allocation switching unit, time code generation unit, frequency standard allocation unitNTPServerIEEE1588Composed of protocol, power supply, display unit, and monitoring management unit.

NTPTheGPSMain functions of Beidou timing server

1.receiveGPSBeidouIRIG-BTime code calibration signal.

2.Can generate2/5/10MHzTheE1The1PPS/M/HTheIRIG-BTheTODTheNTPThePTPTheDCF77Waiting for time-frequency signals.

3.single supportGPSSingle Beidou, Double BeidouGPSDouble BeidouGPS/Beidou dual system satellite receiver configuration.

4.The device adopts a fully modular plug and play structure design, supporting hot swapping of boards, flexible configuration, and easy maintenance. For future reference sources of other signals(Jialilu satellite signal and upstream ground linkDCLSsignalPTPTheNTPTime reference signal, etc)The access provides convenience and lays the foundation for the future construction of a three in one digital synchronous network. At the same time, it provides convenience for adding or changing timing signal interfaces during future on-site network renovation and expansion.

5.The device not only achieves full board compatibility, but also provides rich signal interface resources and an open special interface design platform, with compatibility capabilities. The device can provide multiple pulse signals（1PPSThe1PPMThe1PPHEvent, null contact, differentialTTLActive, optical)IRIG-BSignal（TTL、422、232TheAC(Light)DCF77Signal (active, passive), time message（RS232TheRS422/485(Light)PTPTheNTP/SNTPNetwork time signal can meet the needs of power plants/Timing requirements for different equipment in the substation.

NTPTheGPSTechnical specifications of Beidou timing server

1Time source:GPSSatellite, Beidou satellite receiverIRIG-Bcode(DCLS)TheOCXO(Temperature-Controlled Crystal Oscillator (TCXO))TheCDMARubidium atomic clockRS232The1PPSThe1PPMThe1PPHOptional.

2Data acquisition time:

Local startup: ≤90second Change of position and restart: ≤90second

Position unchanged, restart: ≤45second Instantly power off and restart: ≤20second

Position accuracy: ±0.1'Time accuracy:0.1MS

3Characteristics of pulse output port:

Empty contact pointCEExternal voltage:VCE＜250V

Empty contact pointCEAllowable current between:ICE＜100mA

4、 Serial interface:

RS232/RS422(RS485)Output, baud rate(1200,2400,4800,9600)adjustable

IRIG-BFormat output:A.DC bias outputB.Sine modulation output

5Pulse output:

Capable of outputting second pulses(1PPS)Split pulse(1PPH)Time pulse(1PPH)Wait, the signal pulse width is about20ms-200ms ,TTLLevel or empty contact output

6Network port support protocol:NTP/SNTP，ARP，UDP/ Time，Telnet，ICMP，DHCP，TFTP，SNMP，MD5，NTP V4，V3，V2，V1，NTP SERVERorNTP ClientOptional.

7Standard configuration of feeder length for timing antenna30m,optional50、60、70、80、100、120、200rice,Including installation bracket.

The above isNTPTheGPSIntroduction to Beidou Time Service Server.