A locking mechanism for probe connector that is connected to a shaft of the probe connector, includes a door and a drive assembly for releasing or locking the probe connector by opening and closing of the door. The support structure includes an aperture with which the wavelength converting element is aligned so that the converted light is emitted through the aperture. In case a match between the known sequences and received sequences is not found and the respective timeout is exceeded, the search and comparison process is restarted and continues until a global timeout is exceeded.