LIN Bus analysis added to digital oscilloscope
25 April 2007
n analysis function for the LIN Bus, widely used as an in-vehicle LAN protocol for automotive applications, has been added to the large set of serial bus analysis functions available on the Yokogawa SignalXplorer DL9000 Series of digital oscilloscopes. As with the existing CAN bus analysis function, the oscilloscope displays the analysis results as waveforms, at high real-time speeds. A LIN bus trigger comes as standard with the new option, and signal capture can be triggered based on combinations of break (top of frame), CAN, and analogue signals (sequence trigger). Two busses (such as a combination of the LIN and CAN bus) can be analysed simultaneously. The package includes an analysis results decode display (for CAN and LIN), and analysis results can be saved to a file in text format. A data search function allows data searches by combinations of synchronisation or ID/data fields. When an item in the list of analysis results is selected, the relevant waveform is automatically shown in a 'zoom' window, allowing protocol errors
to be quickly compared to the physical-layer waveform and speeding up development and debugging.
The voltage threshold levels for the protocol analysis can be varied to allow scenario or 'what if?' analysis of decoded results. The Yokogawa SignalXplorer DL9000 Series of oscilloscopes includes models with bandwidths of 500 MHz, 1 GHz and 1.5 GHz, sampling rates of 2.5 and 5 GS/s per channel, and memory depths of 2.5 and 6.25 Mword per channel.
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