Patent ID: 11959963
Assignee: APTIV TECHNOLOGIES AG
Field: Measurement (Instruments)
Classification: CPC G  H | IPC G

Claim 0:
1. A vehicle system comprising:
a device under test comprising:
a source configured to produce a digital transmission;
a first test signal generator (TSG) configured to:
produce a first test signal based on a test generation function; and
inject the first test signal into the digital transmission;

a digital path configured to transfer the digital transmission from the first TSG to an analog output of the device under test; and
the analog output configured to output an analog response along an analog path based on the digital transmission; and

a test device comprising:
at least one processor configured to:
receive, from the device under test, the analog response;
receive, from a second TSG of the test device, a second test signal based on the test generation function;
compensate the second test signal using a linear transfer function of a combination of the digital path and the analog path of the device under test to produce an estimated test signal;
determine whether the estimated test signal is identifiable from the analog response; and
output an indication of whether any errors have been introduced by the digital path of the device under test based on whether the estimated test signal is identifiable from the analog response.