The normal method of calibration is to travel a known exact distance
(i.e. 1 NM) and let the system count the number of turns the paddle
makes. This would imply that the paddle wheel rotation is actually
measuring distance and is linear.


bing2005 wrote:

Can anyone please tell me how did the speed transducer of SPEED2100
measure the speed of the boat?
I try to design my own display unit for this speed tranduscer. However,
i dont know the operation of the speed transducer, such as how i
calculate and measure the speed through the paddle wheel of the
transducer. When the paddle wheel is moving, how i going to know the
speed of the boat?
If anyone know, please tell me.
Thanks a lot!!!