CAN Bus Waveform

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7 months 2 weeks ago #64605 by Jutta
CAN Bus Waveform was created by Jutta
Hi everybody,
can anybody please send me a scope picture of a sleeping hight speed can-bus and a sleeping komfort-can-bus.......I have to measure an Audi A8 2004 with a batterie drain of
160 mA. I don't how much activity should be on the can-lines after 3 to 4 hours rest time.
Thank you all very much for reply.





 

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7 months 2 weeks ago #64611 by Chad
Replied by Chad on topic CAN Bus Waveform
If everything powers down, properly, CAN bus should be a Flat-line 0v. Active CAN messages ride on a 2.5v bias. An idle CAN bus may drop to a flat-line 1.5v. But, when every thing powers completely down, there should be no voltage and no activity.

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