The vehicle we were working on has an analogue sensor and we can identify this by looking at number of wires to the sensor ... analogue sensors has 2 wires to it , signal and earth and digital sensors have 3 wires ... supply, signal , earth . we can also tell this by looking at the signal wire of the sensor with a oscilloscope and whether it is digital or analogue .
Front left : 0.05 centimeters
Front right : 0.05 centimeters
Rear left : 0.05 centimeters
Rear right : 0.05 centimeters
All within manufacturer specification and no sign of physical damage to the sensors.
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By looking at the above pattern we can easily tell that this sensor is an analogue sensor as the output voltage goes positive and negative voltage where digital voltage is normally just positive . By using the frequency scale on a multi-meter we can also note the frequency which is 210 Hz
Each cycle or frequency or revolution is close to 5 mili seconds = 0.0005 seconds.
1 / frequency = time ,so 1 / Time = frequency , 1 / 0.0005 = 200 Hz
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