Patent ID: 8891602
Filing Date: 2014-11-18
Classification: H04B

Abstract:
1. A method, comprising: using a real-time sampling oscilloscope to acquire a signal waveform representing a signal-under-test (SUT); using the real-time sampling oscilloscope to acquire a noise waveform representing noise measured by the real-time sampling oscilloscope in the absence of the SUT; deriving an environment waveform from the noise waveform and the signal waveform; computing a jitter spectrum of the environment waveform; detecting an environment spur, where the environment spur comprises a spur in the jitter spectrum of the environment waveform; computing a jitter spectrum of the signal waveform; detecting one or more signal spurs, where the one or more signal spurs comprise one or more spurs in the jitter spectrum of the signal waveform; and deriving a measure of jitter for the SUT from the one or more signal spurs after reducing the presence of at least one of the one or more signal spurs in response to detecting the environment spur.