System features

◆ The system bus requires dual communication redundant configuration of gigabit redundant ring network and audio control bus. Digital Ethernet adopts a gigabit redundant ring network with a design bandwidth of 1000M. The audio control bus adopts the standard UIC bus design to meet the broadcasting requirements in degraded mode.

◆ The on-board PIS backbone network uses Gigabit Ethernet to form a redundant ring network, and the Gigabit port has the Bypass function.

◆ The Gigabit Ethernet trunk line provides sufficient bandwidth guarantee for the various functions of the system to ensure the realization of high bandwidth requirements such as live broadcast signals and surveillance video storage. The redundant ring network architecture and the Bypass function greatly improve the system reliability. When the switches of multiple carriages cannot work normally, the on-board PIS backbone network is still connected.

◆ The system preferentially adopts all-digital Gigabit Ethernet to realize functions, which is easy to maintain and diagnose. At the same time, the audio control bus guarantees the realization of functions in the degraded mode, and improves the reliability and usability of the system.