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Sometimes winning the "prize" is not all that
desirable. Well, that's the only thing I can think of unique to
controller A other than its pressure transducer. I might expect a pressure
transducer case leak - but, with their outputs the same at different altitudes,
that sort of rules that out.
The same approx. output indicates to me that the
pressure transducers appear to be doing identical functions with changing
altitude/ambient pressure. So I would normally say the problem has to be
down stream of the pressure transducer output, but I'm sure Tracy has chased
that rabbit. It is a puzzle
If the pressure transducer were causing the problem
(and nothing else), its hard to work up a scenario that fits the symptoms.
If there output varied with altitude then clearly it would indicate a bad
transducer - but, their output tracks with each other. If their outputs
are nearly the same and controller B runs find with that output from its
transducer then why not A. Again, it leads me to suspect something down
stream of the transducer.
But, hopefully a new transducer will cure the problem - be
interesting to find out what the problem was.
Ed
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