Patent ID: 8253408

Claim:
A method for measuring hearing aid compatibility (HAC), comprising: providing a probe comprising a circuit board, an electric field detecting probe and a magnetic field detecting probe, wherein the electric field detecting probe and the magnetic field detecting probe are located on the circuit board, and an anti jamming distance between the two detecting probes is a multiple of 5 millimeters and is greater than about 10 millimeters; providing a signal source and defining a 50 by 50 square millimeter region, a geometric center of the signal source overlapping with a geometric center of the region; dividing the region into one hundred 5 by 5 square millimeter sub-regions by 11 longitudinal lines and 11 latitudinal lines; scanning all intersection points formed by the longitudinal lines and latitudinal lines using the two detecting probes; and recording electric field strengths and magnetic field strengths obtained by the two detecting probes.