PTP/NTP master clock synchronization

Production Introduction

LX-850 time synchronization system can simultaneously receive Beidou satellite navigation system, GPS, IRIG-B (DC) code, PTP network time message and ground timing signal, and generate pulse signal, IRIG-B time code, serial port that is synchronized with UTC Time message, NTP/PTP network time message, ensure the validity of time signal output, and provide stable, reliable and accurate time and frequency reference.

The XQ-850 is a carrier-grade IEEE1588-2008 master clock that provides high-performance client processing capability, hardware-based packet processing and redundant hardware architecture design to achieve high scalability and maximize network availability . It combines the high-accuracy function of the IEEE 1588-2008 master clock, 10MHz/1PPS I/O port high-performance output, and takes into account the compact size (1U) of the device. It is very suitable for deployment in racks and places with limited space such as wireless telecommunication network controllers and base station controllers.

The LX-850 offers an optional NTP service function that supports numerous vendor products and protocols in existing mobile network base station locations. The PTP and NTP protocols can run simultaneously, and the two ETH time synchronization ports on the MCP board can be configured separately. The processing capacity of NTP requests can reach 40,000 times per second, while the carrying capacity of PTP can be maintained at up to 1,000 clients.

The LX-850 adopts a dual-antenna dual-mode input design. Based on the quality of the clock source signal or the priority level set by the user, the XQ-850 supports automatic switching between GPS/BD/IRIG-B/TOD/PPS signals to select Preferred reference source. Support BMC algorithm, support 1+1 hot backup between servers, provide one server as the main function to provide normal services, and the other as a backup, so as to ensure that when a fault occurs, the client can still work normally. influences. At the same time "dual power redundancy" mode can also provide excellent protection.

LX-850 adopts high-performance PowerPC+FPGA hardware platform, based on hardware time stamping and packet processing, and embedded VxWorks real-time operating system provides high-performance client responsiveness.

LX-850 supports flexible and convenient software parameter configuration for users, and can choose One step/Twostep, E2E/P2P, L3/L2 Unicast/Muiltcast settings, which ensures compatibility in the application environment of multiple client (Slave) suppliers interconnected.

LX-850 modular design, multi-type standard interface input and output, can use constant temperature crystal oscillator or rubidium clock at the same time, with high-precision self-clocking ability, so that service providers and network equipment manufacturers can choose the most suitable one based on network performance and application requirements. good level of maintenance. XQ-850 can perform remote and local management through MNP1 and MNP2 network management, and supports log viewing and exporting.

Main features

○Redundant hardware: inputs, outputs, clock, and power

○ Single or dual GNSS inputs with GPS, GLONASS, Galileo, and Beidou options

○ Synchronous Ethernet support with optical SFPs

○ Support 2×GNSS input,automatic switching timing reference source

○ Fully interoperable with standards based clients

○ NTP time accuracy is ≤ 100us； PTP time accuracy is ≤ 100ns

Advantages

○ Support BC, OC, TC

○ Support multiple PPS trigger signals

○ Support SyncE(Synchronous Ethernet)

○ PTP and carrier-grade NTP server.Simultaneously supports both PTP and NTP elements in the network

○ Support RTC automatic cut-out time keeping

Applications

○ LTE, LTE-Advanced, and 5G synchronization

○ Mobile edge computing & enterprise

○ Datacenters & financial applications BENEFITS

○ Transportation, finance, big data, digital TV/radio network

○ Circuit emulation services (CES)

○ Passive optical networks (PON)

Grandmaster Server - physical interface specification