A recording medium with a wobble-modulated track, and a method of and an apparatus for detecting a header region of the same. At least one safety element is provided for securing the catch in the locked state and can be moved relative to the catch for unlocking the locking device. The addendum tooth profile of the outer teeth is stipulated by a curve generated at the outer teeth when the addendum profile of the inner teeth moves from the inflection point to the apex. Also, a method of routing signals through the conductors of the plurality of cables between electronic components. The vibration information can include axial, lateral or torsional vibration of a drill string.