is a resolution of 0,001 UI good to measure clock jitter ? - diyAudio
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Old 8th December 2008, 11:20 AM   #1
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Default is a resolution of 0,001 UI good to measure clock jitter ?

is a resolution of 0,001 UI good to measure clock jitter ?

For a 10 MHz clock this is a resolution of 100pS ?

For 44,1 kHz
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Old 8th December 2008, 02:01 PM   #2
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Location: Budapest, Hungary
0.001 UI is -60 dB peak-to-peak jitter phase noise, related to the fundamental frequency. We need half of 1/65536 UI, that is 0.75 x 10-6 UI in telecom terms. UI is for Unit Interval, referring to the data clock period. That would be the jitter causing 1/2 LSB error. And we need it in the full audio band, so a jitter spectrum is more informative than such cumulative data.
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