Automotive Ethernet System level Signal Integrity and Protocol Test using Software based Signal Separation

Reliability is the key requirement for Automotive Electronics as some of the components are used for safety purpose. Apart from component level test, System level testing is the key aspects of validation. Automotive Applications like ADAS, Infotainment demands faster speed communication link. Some of the In-Vehicle network standards used for Sensor to ECU or ECU to ECU communication uses Full-Duplex signaling to reduce number of cables. While Full-Duplex signaling is a great advantage for Automotive In-Vehicle Network standards, it adds Test and Measurement complexity for System level testing like Protocol Test or Physical layer Signal Integrity test. In this paper we will discuss about System level test challenges for Full-Duplex singling and test solution. This paper will describe a novel test procedure for separating the Full-duplex signal into simplex and enable to visualize, characterize, decode the Signal from respective ends at system level for Automotive Ethernet like 100 baseT1, 1000 BaseT1. This enables Test engineer to perform Signal Integrity and Protocol decode at System level with non-intrusive method of Signal Separation.