The 10mV Rule: What OEM ECU Ground Offset Specs Actually Mean and Where They Come From
You have seen the line item in a customer drawing. You have likely heard it argued about in a design review. Someone points to the schematic and says, “The reference ground offset between the sensor and the ECU must not exceed ten millivolts.” Then the room goes quiet because nobody wants to admit that ten millivolts is almost impossible to […]