Abstract: A method for measuring bus traffic on a controller area network (CAN) is described. Accordingly, in one embodiment, a digital oscilloscope acquires the CAN bus signal in form of a waveform in real-time. The waveform is converted into a bit stream and the bit steam analyzed to carry out various measurements in a CAN measurement system. The method can be used for continuous monitoring of bus traffic and measurements of various parameters related such as bus occupancy by a particular node. The acquired data may be analyzed for measuring bus occupancy by various types of CAN message frames. The user is presented with a data display and a graphical display of the measurements. Also, the user is allowed to feed identifier of a node to obtain measurements relating to that particular node.

Abstract: A method and apparatus for identifying and analyzing high power dissipation peaks across a switching device. The method and apparatus include processing voltage waveform data associated with a switching device to determine switching edge and slope parameters for each of a plurality of switching cycles, and identifying those portions of the voltage waveform data associated with switch state transition portions of the plurality of switching cycles. For a plurality of the identified switch state transition portions, respective peak power levels are calculated using portions of the voltage waveform data temporally corresponding to the plurality of identified switch state transitions, and portions of current waveform data associated with the switching device temporally corresponding to the plurality of identified switch state transitions.

Abstract: A method and apparatus for measuring inductance. The method and apparatus include processing current and voltage waveform data associated with an inductive device to determine edge and slope parameters for each of a plurality of current waveform data cycles. Furthermore, proportional magnetic flux and proportional magnetic current is determined from the acquired current waveform data and the voltage waveform data proximate determined edge regions of the waveform data. An inductance value of the inductive device may then be calculated from the proportional magnetic flux and proportional magnetic current.