Abstract: Combination of at least one transport securing element and at least one data storage cartridge, the data storage cartridge including a housing which has at least one access opening. The housing encloses at least one tape reel and at least one biased reel brake mechanism. The at least one reel brake mechanism is adapted to prevent movement of the at least one tape reel. The transport securing element is dimensioned to slide in and out of the at least one access opening and is adapted to move the tape reel from a first position to a second position. The at least one transport securing element is free to slide out of the at least one access opening under a biasing force exerted by the reel brake mechanism when a force opposing the biasing force is removed. A method for forming a package is provided in which the at least one cartridge is wrapped.

Abstract: A magnetic recording medium for test purposes, in particular for calibrating flying heads, consists of a firm substrate which has a raised calibration area in the form of an arc-shaped step of defined length, width, height and hardness. Sharp initial and end edges in conjunction with a defined minimum arc length give easily evaluated measured signals in the low frequency range. The test recording medium can be used for any type of magnetic layer on recording media and/or for heads associated with these.