Oscilloscope supports PSI5 bus analysis

October 13, 2016 // By Christoph Hammerschmidt
Instrument vendor Yokogawa has announced support for the PSI5 (Peripheral Sensor Interface 5) bus system with its its 8 channel DLM4000 and 2 and 4 channel DLM2000 oscilloscopes.

PSI5 is a widely used open standard based interface for in-vehicle communications in the automotive industry; the key application area is airbag control. These systems play a major role in passenger safety and continue to increase in capability and complexity, so a reliable communication bus is critical.

Yokogawa’s PSI5 analysis firmware option offers several trigger and protocol analysis features. The feature can trigger on sync pulses, start of frame or specific bit patterns, and up to 400,000 events can be stored. The sensor data is decoded, and the firmware option provides a range of search criteria, including start of data, any frame in a specified slot, bit patterns, value comparisons and a range of errors such as frame, clock, start bit, parity/CRC, frame number and slot border, simplifying and speeding up system debugging.

The ability to provide specialised analysis of PSI5 communication performance on an oscilloscope is of particular interest to anybody involved in vehicle airbag development and implementation or any other application of PSI5 to communicate with safety-critical sensors.

The new PSI5 testing firmware sits alongside other automotive firmware options available on Yokogawa’s DLM oscilloscope range that provide automotive engineers with a single piece of equipment for tasks from simple waveform display to analysing automotive serial busses such as CAN, LIN & SENT.

PSI5 analysis can be installed in a new DLM4000 or DLM2000, or as an upgrade to an existing unit.  Existing Yokogawa DLM-series users can try the new PSI5 testing function for a free 30-day trial period.

Further information http://tmi.yokogawa.com/scopes