"Steve Lusardi" wrote in message
...
John,
I am not sure this is relevant, but often more than one data inut can be
transmitted on a single wire like speed and azimuth, where speed is
derived as an ac signal (pulse rate) It could be riding on top of a dc
reference voltage used in azimuth calculation. These two pieces of
intelligence could easily be separated using capacitive coupling at the
receiver.
Steve
This starts to sound a bit more complicated to this electronically
challanged sailor! But I think I get your point - this would mean that a
steady DC voltage would prove that the wire is connected (to something) but
an absence of AC pulse might imply that the anemometer has failed?
J