PTP/NTP master clock synchronization

Production Introduction

LX-800 time synchronization system can simultaneously receive Beidou satellite navigation system, GPS, IRIG-B code, PTP network time message and PPS_TOD and other ground timing signals, and generate pulse signals, IRIG-B time code, PPS_TOD time that are synchronized with UTC message, NTP/PTP network time message, ensure the validity of time signal output, and provide stable, reliable and accurate time and frequency reference.   

The LX-800 is a carrier-class master clock that provides high-performance client-side processing capabilities and a hardware architecture design based on hardware timestamping, thereby achieving high scalability and maximized network availability. It combines the high-precision function of the IEEE1588-2008 master clock, the versatility of the NTP function, and the high-performance output of ports such as 10MHz/1PPS/IRIG-B/PPS_TOD/E1, while taking 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-800 provides reliable PTP/NTP service capabilities, supporting numerous vendor products and protocols in existing mobile network base station locations. The PTP and NTP protocols can run simultaneously, respectively, and the two ETH time synchronization ports on the front panel can be configured separately. The processing capacity of NTP requests can reach 5000 times per second, while the carrying capacity of PTP can be maintained at up to 100 clients.

LX-800 adopts dual-mode input design, based on the quality of the clock source signal or the priority level set by the user, LX-800 supports automatic switching between GPS/ BD/ PTP/ NTP/ IRIG-B/ PPS_TOD/ E1 signals to select the 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 without influences.

XQ-800 adopts the high-performance ZYNQ hardware platform, based on hardware time stamping and packet processing, and the embedded VxWorks real-time operating system provides high-performance client responsiveness.

LX-800 supports flexible and convenient software parameter configuration for users. Onestep/Twostep, E2E/P2P, L3/L2, Unicast/Muiltcast settings can be selected through web operation, which ensures that the application environment of multiple client (Slave) suppliers can still be used. Compatible interconnection is possible.

LX-800 supports multiple types of standard interface input and output, can use constant temperature crystal oscillator or rubidium clock, and has high-precision self-clocking capability, so that service providers and network equipment manufacturers can choose the best hold level based on network performance and application requirements . LX-800 can perform remote and local management through web network management, and supports viewing and exporting of logs.

Main features

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

○ Half rack solution for a space efficient design

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

○ Synchronous Ethernet support with optical SFPs

○ 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

○ Support RTC automatic cut-out time keeping

Applications

○ LTE, LTE-Advanced, and 5G synchronization

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

○ Circuit emulation services (CES)

○ Passive optical networks (PON)

Multifunctional time synchronization box - physical interface specification