Field strength measured along the central axis of the applicator coil, perpendicular to its face. Axial readings represent the maximum field value at a given distance and are used as the reference standard for PEMF device characterization. Field strength falls off rapidly with distance. Values in the report are at 0mm (contact surface) unless otherwise noted.
The field is measured on a grid. Starting at the center, the test engineer steps a probe outward along each axis at a fixed point spacing, taking a reading at every point, and continues a little past the accessory edge to catch the field as it fades. The origin is the center of the accessory surface.
