How to Correlate Automotive Serial Bus Data with Physical-Layer Signals

+ Essential Benchtop Oscilloscope

Connect Bus Data to Signal Behavior

Correlating automotive serial bus data with physical-layer signals requires capturing the electrical waveform and decoding the associated protocol activity within the same acquisition. Engineers need to see CAN, CAN FD, or LIN frames in their timing context so decoded messages can be compared directly with the analog behavior of the bus.

Performing the test requires an oscilloscope that can acquire the physical-layer waveform while displaying decoded protocol information time-correlated to the captured signal. Engineers can select a frame or portion of bus activity and review the corresponding waveform to examine how the decoded communication relates to the underlying electrical signal.

Automotive Protocol and Physical-Layer Correlation Solution

Correlating automotive serial bus data with physical-layer behavior requires an oscilloscope that can capture the analog bus waveform while decoding protocol activity in the same time reference. A Keysight Essential benchtop oscilloscope captures CAN, CAN FD, or LIN signals, while automotive analysis software provides hardware-based serial decoding. The decoded trace is displayed time-correlated with the captured waveform so engineers can connect individual frames and protocol fields to the corresponding electrical activity. This integrated view provides both protocol and physical-layer information in the same acquisition for automotive serial bus debug and characterization.

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