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发表于 2015-2-10 11:11:42
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long has been placed horizontally in the center of the eye. Suppose that it is regarded a failure if any waveforms cross this ruler, either
rising or falling. In the figure, it appears that this ruler has not been crossed by any waveforms yet, but such a crossing is inevitable if waveform samples continue to accumulate and the signal
contains some Gaussian jitter. Now suppose instead that the test was considered successful if no more than one waveform out of every 1000 waveforms crossed over the ruler. It would no longer
matter how long the test ran. If 50,000 waveforms were allowed to accumulate and 50 or less crossed over the ruler, the test would have passed. |
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