Of course. What I'm looking at is that Gary needs to convince his
customer.
Cortland Richmond
On 1/24/2012 1444, ce-test, qualified testing bv - Gert Gremmen wrote:
The echo problem is only relevant for the highest baudrates, where the
length of the cable
and the propagation time is in the same order of magnitude as a baud time.
If you run a CAN at 250 kHz it will run on any cable. Notice that the
susceptibility for
high frequencies may suffer !
Gert
*Van:*[email protected] [mailto:[email protected]] *Namens *Cortland
Richmond
*Verzonden:* dinsdag 24 januari 2012 20:18
*Aan:* '[email protected]'
*Onderwerp:* Re: 120 ohm CAN cable
Gary,
Any reflections that unacceptably degrade the CAN signal must be
avoided, which is the reason for terminations. Network cables usually
run 105 Ohms or so and reflections from cable-to-load will at 120 Ohms
be relatively low-level. You can probably DEMONSTRATE there's no need
for better by actually setting up the requisite length of cable as
installed and looking at BER and waveforms.
That may be faster and cheaper than calling for outside analysis.
Cortland Richmond
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