Test purpose:
This test is designed to monitor a hall effect sensor. Hall effect sensors measure and monitor the change in magnetic field due to a reluctor wheel rotating through the sensors test area and will provide a waveform output in relation to the metal teeth passing through the test field. The hall effect sensor will typically shift between between 0 and 5 volts in a square wave pattern as the teeth on a reluctor wheel pass through sensor and change the magnetic field. Testing the sensor can be done with a voltmeter and values can be monitored, however a graph of the values over time will allow you to see if there are teeth missing on the reluctor wheel or if voltages are not consistent at each tooth passing through the system.
Tool Setup:
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Test Procedures:
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Top Chanel: N/A
Bottom Channel: Voltage DC ranged at 60V Set Min/Max to Max
Speed: 64MS (256) or (4000 Hz 256 SMPL)
Place Leads on tool to Voltage DC
Use Probe Tips on leads or clamps
Insert a T-Pin at the back of the hall effect output terminal
Insert a T-Pin at the back of the hall effect ground terminal
Set the Meter Mode to Graph
Set the Graph to “Waveforms”
Ensure the system is on and 5v reference is available (either through battery or jumper)
Begin rotating the reluctor wheel (rotate shaft or wheel)
Watch the graphing screen for the 5v reference turning “on and off” creating a “Square wave” pattern.