It is an object to decrease an occupied space in a printed board to carry out space saving and to reduce the size of a unit without sacrificing the performance of a transformer and increasing a cost. The injector includes an injector housing, in which a control chamber is embodied that can be subjected to a control volume via an inlet throttle. Lowest and highest values of the segment records for the field, and a bitmap for the segment, can be determined and stored. The security policy may be configured for a particular receiver.