How to Characterize Automotive Serial Buses

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Mixed Signal Oscilloscope
+ Mixed Signal Oscilloscope
Mixed Signal Oscilloscope
+ Mixed Signal Oscilloscope

Analyzing automotive serial buses with an oscilloscope

Analyzing automotive serial buses requires the use of an oscilloscope with serial protocol analysis, symbolic decoding, and segmented memory. Symbolic decoding is used so the oscilloscope can analyze the captured data and decode it into meaningful symbols such as start and stop bits, addresses, data bytes, and acknowledge bits. Segmented memory enables the oscilloscope to ignore unimportant idle time between packets.

Segmented memory optimizes the number of serial packets captured consecutively or selects packets with a particular ID or address. Scroll through the frames captured to identify any anomalies. Additionally, a time-interleaved lister can display two serial buses and correlate data transfers from one bus to another. It is essential to use a differential active probe when probing on differential serial buses such as CAN, CAN FD, and FlexRay.

Automotive serial bus characterization solution

Automotive serial bus characterization solution

Characterizing automotive serial buses requires debugging buses and correlating data transfers with other mixed-signal interactions. The Keysight InfiniiVision 4000 X-Series oscilloscope, paired with Keysight automotive software and differential probes, analyzes automotive serial buses, including CAN, CAN FD, LIN, SENT, FlexRay, and other serial buses.
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