Patent ID: 9606144
Date: 2017-03-28
CPC Classifications: G01R

Claim:
1. A method of testing a magnetic sensor with a probe card including a plurality of probe tips and first and second pairs of non-coaxial coils, comprising: applying a first magnetic field to the magnetic sensor with the first pair of non-coaxial coils positioned on first opposed sides of the plurality of probe tips, wherein each coil of the first pair of non-coaxial coils includes a longitudinal axis; sensing a first output from the magnetic sensor; applying a second magnetic field to the magnetic sensor with the second pair of non-coaxial coils positioned on second opposed sides of the plurality of probe tips, the second magnetic field being orthogonal to the first magnetic field at the magnetic sensor, wherein each coil of the second pair of non-coaxial coils includes a longitudinal axis, and wherein the longitudinal axes of the first pair of non-coaxial coils are disposed orthogonally to the longitudinal axes of the second pair of non-coaxial coils; and sensing a second output from the magnetic sensor.