The method for correction of evaluation of a switching threshold of a magnetic sensor arrangement includes evaluating switching edges of a transmitter signal produced by a moving transmitter element and generating a signal output when the switching edges exceed or fall below a default threshold value. A printer, such as an ink jet printer or a laser printer, is used for generating graphical representations of selected ones of the plurality of images on a preselected print media such as a paper. The first section includes a diffraction grating formed on the surface of the first section and directs a WDM beam onto the internal surface of the diffraction grating. The component includes a contact element disposed in the hollow body and includes a first surface and a second surface. During operation of the treadmill, the controller compares the speed of the tread to a target speed, and based on the comparison, adjust the angle of the tread so that the operator’s weight will adjust the speed of the tread. Incoming air from the conduit member is required to make a sharp turn, in order to exit the apparatus via the filter member.