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Debugging SENT Automotive Buses with an Oscilloscope

Debugging SENT Automotive Buses with an Oscilloscope Application Note, thumbnail image

The SENT bus is used in automotive sensors to transmit high-resolution measurements to electronic control units (ECUs), usually in the powertrain. Decoding the Single Edge Nibble Transmissions (SENT) by looking at the signals can be very difficult, especially due to the pulse-width encoding scheme used in the standard.  An oscilloscope equipped with SENT protocol decoding and triggering can be an invaluable tool. This application note:

 

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