The Method Research of Device Physical Layer test Based on A High-Speed Train Communication Network Standard Protocol

For the less study of TCN physical test, and lack of physical test certification test system or test method, according to the research for physical characteristics of TCN network, and the analysis of TCN network test the physical demand, this article puts forward the design scheme based on the test automation of TCN network test system, and does the comparative analysis with traditional TCN network physical test system. This paper design a conformance test system based on MVB protocol, TCN network physical test system has been carried on the design and development, and gives the overall structure of the system, hardware and software design, and test set optimization model, including the underlying control software design, the upper test software design and human-computer interaction interface design. And based on the test system of TCN network, we design the physical test methods of MVB device, including four types of methods and steps of direct sampling test, signal waveform test, signal acceptance test and sine wave waveform test. For each protocol description design realizes the integrated test system and test method, to realize the physical layer conformance test of MVB about EMD and ESD. Practical operation shows that the MVB test system on the premise of guarantee the reliability can improve the test efficiency, reduce the MVB conformance test costs, and has a certain application value.