Peripheral Sensor Interface 5 (PSI5) bus analysis has been added by Yokogawa on its 8-channel DLM4000 and 2 and 4 channel DLM2000 oscilloscopes making them useful for automotive designers and engineers. The Peripheral Sensor Interface 5 (PSI5) is a widely used open standard based interface for in-vehicle communications in the automotive industry and a key application area is in the control of Air Bags.
These systems play a major role in passenger safety and continue to increase in capability and complexity, so a reliable communication bus is critical. The effect of a non-functioning or malfunctioning Air Bag is extremely serious and can be life threatening.
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.