Speed sensor output specifics
Has anyone looked at the output of the DL650 speed sensor in detail? I assume it's a hall effect device an it looks like there are maybe 4 pulses per revolution?
The schematic isn't a lot of help. There are three wires. One is grounded and the other two connect into the speedometer. The manual show how to test the sensor using a battery, resistor and multimeter, but doesn't give any data on what the voltage levels should be when it's in operation.
I'd assume that one of the lines goes from zero volts to the supply voltage as each of the 4 magnets pass the sensor? I'd also like to know how long the pulses are for a given wheel speed.
I suspect I'm going to have to measure them myself, but if someone has already done it I'd be interested in what they found. The tough part of the measurement "in situ" is spinning the front wheel fast enough and smoothly enough to represent typical operation of the bike travelling at a constant speed.
1990 Kawasaki Ninja 250 (Rebuilt)
2011 Suzuki DL650A