A pair of spectacles comprises two support elements for engaging the nose of the wearer. The screen connector is embodied as a flat screening of the cable connections and contact elements are arranged in the area of the contacting of the bus screen lines which are intended for automatic contacting of the bus screen lines with the elements of the bus connector screening it when clamped on during installation of the housing. The dispenser also includes an apertured piece received in the chamber having a first seed aperture of a first configuration and a second seed aperture of a different configuration. The method includes receiving with the compiler driver an error message corresponding to the identified error. The first mixer circuit generates a first down-converted signal from the first set of phases and the incoming rf signal.