L7000-M1 B-code GPS Beidou time sourceL7000-M1,B-code,GPS,Beidou,tim

Overview

The L7000-M1 NTP network time server provides accurate, reliable, and secure high-precision satellite time reference for network devices, terminals, and servers within the firewall. It can support time synchronization for tens of thousands of clients that support standard network time protocols (NTP, including V1/2/3/4) and simple network time protocol (SNTP). NTP network time servers have been widely used in various fields such as finance, transportation, securities, electricity, mobile communication, petroleum, industry, e-commerce, industrial automation, cloud computing, security, smart cities, the Internet of Things, energy, and national defense.

The device adopts a redundant architecture design, with a separate CPU and FPGA circuit built internally to form a taming system. The taming system receives ephemeris data and atomic clock frequency reference from various satellites in the Beidou system, and achieves local clock synchronization and high-precision timing function through delay compensation, filtering, and PID algorithm. Professional digital hardware design, efficient Linux operating system, with multiple reliable clock signal output functions. The product design supports NTP full version protocol, symmetric MD5 secure encryption protocol, and asymmetric RSA certificate encryption protocol, with client time synchronization accuracy better than 2 milliseconds. Simultaneously supporting serial port NMEA0183 output, 1PPS, signal output, local and remote logging, green terminal dry contact alarm, USB port upgrade, network data upload and download, and other functions, in conjunction with the unified monitoring software of the entire network, to achieve real-time monitoring of server operation status, client deviation status, client synchronization status, and alarm functions.

Main Features

• 2-channel 10/100 Base-T Ethernet ports

• GPS/Beidou receiver accuracy: better than 30ns (RMS)

• Full GNSS (GPS, Beidou, Galileo,GLONASS)

• NTP timestamp timing accuracy: less than 3 microseconds

• Support tens of thousands of network clients

• Support viewing NTP, network port status, etc

• Supports multiple protocols such as NTP, SNTP, TIME, HTTPS, FTP, SSL, etc

• Equipped with level node timing function

• Linux operating system

• Support web management and status monitoring

• Self developed unified time monitoring software for the entire network

• Supports PCs, servers, and laptops

• The device supports logging function

• Intuitive network management interface, easy for users to operate, control and manage

Partial technical indicators

Equipment synchronization accuracy:

• --GPS Beidou receiver: UTC synchronization accuracy 30ns (RMS)

• --NTP timing accuracy 2us @ 2000 times/second

• --Client synchronization accuracy: 0.1~2ms (typical value for LAN)

• Equipment maintains accuracy:

• --None: No deviation, real-time connection to satellite antenna

• --Constant temperature crystal oscillator (OCXO): 24-hour timekeeping better than 10 microseconds (needs to be expanded)

• --Rubidium atomic clock: 24-hour timekeeping better than 1 microsecond, annual deviation better than 3 milliseconds (needs to be expanded)

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