My ST60 Tri-data's speed display has slowly stopped working, as in worked intermittently to now never shows anything but 0.0 .
I read GordMay's thread:
Raymarine ST60 - No Speed Reading
In it, he mentions that if you move the sensor wheel
slowly, the signal line should flip from 0 to about 8V as the magnets pass the hall effect sensor.
My question is how much voltage should be going to the sensor? If I put a meter between power and ground of the speed meter port on the back of the Tri-data, I see 4 -5V.
What should it read? My instinct is whatever boat supply voltage is (~12.7). IS that correct?
I tried his test of powering the sensor and putting a meter between signal and ground, then turning the wheel
slowly. I don't see anything, but I don't know if that is because the supply voltage is low or because the sensor is broken.