How to Trace Data Across Automotive Serial Bus Gateways

+ Essential Benchtop Oscilloscope

Trace Data Between Automotive Buses

Tracing data through an automotive gateway requires monitoring serial bus activity on both sides of the gateway and determining how messages pass from one network to another. Automotive systems may use buses such as CAN, CAN FD, and LIN for control and monitoring, so engineers need a way to decode multiple buses and preserve the timing relationship between their messages.

Performing the test requires an oscilloscope that can acquire and decode two automotive buses and display their traffic in chronological order. A dual-bus time-interleaved protocol lister places decoded frames from both buses in the same table, allowing engineers to follow message activity as data passes through the gateway and compare the timing and content of frames on each bus.

Automotive Bus Gateway Debug Solution

Tracing data across automotive serial bus gateways requires an oscilloscope that can acquire and decode multiple buses while preserving the timing relationship between their messages. A Keysight Essential benchtop oscilloscope captures bus activity, while automotive analysis software provides hardware-based decoding for supported automotive serial buses. The dual-bus time-interleaved protocol lister combines decoded data from both buses into the same chronological table, making it possible to track messages as they move through the gateway. Engineers can compare decoded frames and their timing across buses such as CAN and LIN to investigate gateway communication behavior.

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