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

Claim 15:
16. A method comprising:
producing, by a source of a device under test, a digital transmission;
producing, by a first test signal generator (TSG) of the device under test, a first test signal based on a test generation function;
injecting, by the first TSG of the device under test, the first test signal into the digital transmission;
transmitting, via a digital path of the device under test that is between the first TSG of the device under test and an analog output of the device under test, the digital transmission to the analog output of the device under test;
outputting, by the analog output of the device under test and via an analog path, an analog response based on the digital transmission;
receiving, by at least one processor of a test device, the analog response from the device under test;
receiving, by the processor of the test device and from a second TSG of the test device, a second test signal based on the test generation function;
compensating, by the processor of the test device, 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;
determining, by the processor of the test device, whether the estimated test signal is identifiable from the analog response; and
outputting, by the processor of the test device, 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.