Patent ID: 11860208
Assignee: VITESCO TECHNOLOGIES GMBH
Field: Telecommunications (Electrical engineering)
Classification: CPC G  H  B  Y | IPC B  G  H

Claim 0:
1. A device for testing a function of a system, the device comprising:
an antenna system containing a selection unit having inputs and an output, a further selection unit having a plurality of outputs and an input, and a plurality of antenna units, wherein each of said antenna units having an antenna and at least one resistor interconnected in each case between an assigned one of said inputs of said selection unit and a specific one of said plurality of outputs of said further selection unit;
a computing unit having an input and outputs and configured to:
provide a control signal for said selection unit and said further selection unit at a first output of said outputs of said computing unit, wherein the control signal defining which input of said inputs of said selection unit is to be connected to said output of said selection unit and which of said outputs of said further selection unit is biased with a bias voltage applied to said input of said further selection unit; and
receive an antenna signal present at said output of said selection unit at said input of said computing unit;

a diagnostic voltage connection;
a diagnostic circuit interconnected between said output of said selection unit and said diagnostic voltage connection and controllable by said computing unit, wherein a diagnostic voltage is applied to said diagnostic voltage connection; and
said computing unit being configured to infer a fault in said antenna system from a comparison of antenna signals at said output of said selection unit that are determined when said diagnostic circuit is activated and not activated.