Patent ID: 9638742
Date: 2017-05-02
CPC Classifications: G01R,Y10T

Claim:
1. A method of testing a circuit assembly, the method comprising: configuring a first component on the circuit assembly to generate a first signal on a first pin of the first component, the first signal comprising at least one leading edge and at least one trailing edge; placing a probe adjacent a second component on the circuit assembly; obtaining a learned signal representative of an expected transient response to the at least one leading edge and at least one trailing edge; performing time domain analysis of a second signal, the second signal being capacitively coupled from the second component to the probe, and the time domain analysis comprising performing a cross-correlation of at least one portion of the second signal to the learned signal, the at least one portion of the second signal comprising a plurality of edges corresponding to the at least one leading edge and the at least one trailing edge; and indicating a test result based on the time domain analysis of the second signal, wherein the test result is a value indicative of a degree of similarity between the at least one portion of the second signal and the learned signal.