Embodiments of the present invention provide an apparatus allowing for an adjustable face plate. Damage to the heating resistor is prevented by suspending the energization if the thus-obtained temperature is lower than or equal to the freezing point. The space consumed in electronic devices may be reduced by providing a connector having a low profile, while another example may provide a connector having mechanical stability. The flowable, insulative material is used to form an insulative layer in a trench located on a semiconductor substrate. An electron beam output is adjacent to the anode structure. The pointing system includes an antenna orientation unit associated with each antenna and a control unit for controlling the orientation units on the basis of data on the position of the terminal in a frame of reference tied to the Earth and on ephemerides of visible satellites of the constellation.