The present invention provides a wire receiving device without any connection point including a housing, and a fixing shaft center mounted in the housing. The method includes identifying a first amount of sheet carrying device displacement and second amount of sheet carrying device displacement as the sheet carrying device carries a media sheet past first and second printheads, respectively, for imaging of a predetermined location of the media sheet. The first shell moves relative to the second shell. The control signal is supplied to a DAC and a Doppler frequency detector. A pair of sensor elements may be vertically coupled.