White Paper: Electronics & Computers

Automotive Ethernet 1000Base-T1 TC9 Measurement Using a VNA – Application Note


Inside a typical car, you will find over 100 electronic control units (ECU) controlling everything from brakes, transmission, engine, A/C, steering, cameras, radar, and acoustic sensors to the non-cellular and cellular wireless communications. Furthermore, advanced driver assistance systems demand higher data throughput for camera systems and low latency for adaptive cruise control.

ECUs talk to each other via car buses, including controller area network (CAN), media-oriented systems transport (MOST), local interconnect network (LIN), and FlexRay.

Automotive OEMs and Tier 1s are now moving away from mixing so many different bus types to something more uniform, enabling higher data throughput, lower latency, and less weight in order to reduce complexity and increase cost-efficiency.

Automotive Ethernet enables fast and cost-effective data communications by connecting automotive bus systems (in-vehicle components). This minimizes cabling, lowering fuel consumption, manufacturing costs, and time to market.

This application note is a systematic guide to help test engineers configure the Vector Network Analyzer in order to perform compliance test on Automotive Ethernet cables according to the Open Alliance TC9 standard.

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