Patent ID: 9506951
Filing Date: 2016-11-29
CPC Classification: G01R

Claim Text:
1. A method of data acquisition with waveform triggering, comprising the steps of: A. defining a reference waveform pattern for waveform triggering, and digitizing the reference waveform pattern to generate for a succession of reference sample times, a corresponding sequence of digitized reference pattern samples; B. digitizing an input waveform to generate for a succession of input sample times corresponding to the respective reference sample times, a sequence of digitized input waveform samples, and calculating a stream of error metric values based on a detected deviations of the input pattern samples from respective reference waveform samples; C. comparing respective error metric values with a predetermined trigger threshold and determining a sample index, wherein the sample index is representative of a minimum error metric value below the trigger threshold; and D. using the determined sample index as a waveform trigger index for triggering sampling of input waveforms.