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Date: Tue, 03 Oct 2000 08:11:52 -0500
From: Brent Regan <brent@regandesigns.com>
To: Lancair List <lancair.list@olsusa.com>
Subject: Re: VMS flow transducer
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          <<<<<<<<<<<<<<<<--->>>>>>>>>>>>>>>>
          <<  Lancair Builders' Mail List  >>
          <<<<<<<<<<<<<<<<--->>>>>>>>>>>>>>>> 
>>
<<Does anyone know how the sensor transmits its info to the VMS computer?
If
one knows how far it's off, I bet it's not impossible to create a circuit to

"recalibrate" the signal.>>

It is a square wave with about a 10% duty cycle. The DPU counts the pulses
over time (frequency). While possible to make a frequency shifter, it is
much easier to burn an EPROM with the correct coefficient.

Regards
Brent Regan

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