Characterizing the Physical Layer of SENT & PSI5 Automotive Sensor-Serial Buses

The complexity of modern automotive electrical systems requires that the procedures used to transmit information from various sensors to the automobile’s electronic control units (ECUs) be robust and reliable. The single-edge nibble transmission (SENT) and peripheral sensor interface 5 (PSI5) serial bus protocols are two of the most commonly used methods employed to achieve this end. Since the physical implementations of these serial buses utilize electrical waveforms, test equipment capable of measuring these types of signals is necessary to verify their physical layer performance. An oscilloscope with integrated serial bus decoding capabilities is the most cost-effective and efficient means to achieve this end.

Keysight’s InfiniiVision oscilloscopes have an option that supports the debug and verification of a variety of serial bus protocols, including SENT and PSI5. The serial bus utilities support all the capabilities necessary for complete serial bus analysis, including SENT fast and slow channel data analysis and Manchester encoding. Also, the oscilloscopes support high-sensitivity Hall effect and shunt current probes, which are necessary for many SENT and PSI5 measurements.

This webinar provides an overview of the protocols and timings used by the SENT and PSI5 buses and will cover in detail the required physical layer measurements of the electrical signals employed by both buses using an oscilloscope. If you are an engineer involved in the verification and debug of automotive serial buses, then you would benefit from attending this free webinar.