#$%^&*AU2019203343A120191205.pdf#####ABSTRACT An apparatus includes a calibration fixture, a calibration position sensor, and interface circuitry. The 5 calibration fixture is sized and shaped to fit over a distal-end of a medical probe, such that the distal-end makes physical contact with a wall of the calibration fixture. The calibration position sensor is fixed in the calibration fixture at a known position relative to the 10 wall, and configured, in response to sensing a magnetic field, to produce position signals indicative of a given position of the calibration position sensor. The interface circuitry is electrically coupled to the calibration position sensor, and is configured to output the position 15 signals.2/2 (0( "00 000 00/ _ _ _ LI)
