Receiver for motor vehicle, has common central antenna unit comprising diagnostic unit for performing diagnosis of antenna system in response to variable in amount of operating voltage of antenna system

摘要

The receiver (100) has a receiving system (50) having receiver units (14,24,34) for processing receiving signals in predetermined frequency range. An antenna system (70) is connected to receiving system via a signal line (60). The antenna system is provided with several antennas (10,20,30) that are connected to a common central antenna unit (40). The common central antenna unit is provided with a diagnostic unit (44) for performing diagnosis of antenna system in response to variable in amount of operating voltage of antenna system.