Detection of dual coaxial SMD angle sensor potentiometer: with a multimeter to block the appropriate range of resistance, were measured with double-chip potentiometer potentiometer on the two sets of resistance (ie, A, C between the resistance and A1, C1 Of the resistance value) are the same and with the nominal resistance value. Then the potentiometer A, C1 and the Custom Potentiometer A1 and C respectively shorted, and then use a multimeter to measure the center of the first B, B1 between the resistance value, in the ideal case, regardless of the potentiometer to the rotation axis to What position, B, B1 between the two points of resistance should be equal to A, C or A1, C1 between two points of resistance (that is, the multimeter pointer should always remain in the A, C or A1, C1 resistance scale Do not understand). If the multimeter pointer is deflected, it indicates that the potentiometer synchronization is not good.