The MT Low Level Communication Protocol document provides a complete reference for the protocols used to communicate with Xsens Motion Trackers on low-level basis. The MT Low Level Communication Protocol document also describes the synchronization messages and settings in detail.
A USB and RS422 interface is possible through a UART to USB/RS422 converter (see example in the MTi 600-series Development Kit). At its core, the module uses the Xsens-proprietary Xbus protocol which is compatible with all Xsens Motion Tracker products. This protocol is available on all interfaces, UART, RS232 and CAN.