> I  need to test a series of CAN transceivers on maximum cables lengths 
> for agiven bitrate (250kbs, 500 meters CAT5) to determine the optimum 
> sample point and wonder how I best do this.  My first though  is to use 
> just a RC low pass filter with R equal to the the cable resistans and C 
> equal to the capacitance. This will not take the propagation delay into 
> account and I have no idea on how to simulate that. Will this be to any 
> use at all for me or do I have to think in a completely different way?

Why simulate it?  Here in the US, a 1000' (304 meters) of cat 5e
cable is only about $55.  Buy a couple boxes, test with real 500M
length of cable, then use it to wire a few new network locations.

						Lee Jones

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