Tektronix TDSUSB2, Руководство пользователя

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Measurement Algorithms
Consecutive and Paired Jitter
You can test two types of Jitter measurements: Consecutive and Paired Jitter.
Consecutive jitter measures the consecutive data bit calculated using the signal
rate.
Consecutive jitter is calculated as follows.
Where: C1, C2, C3, and C4 are the Cross -Over points.
R1, R2, R3, and R4 are the reference points.
Consecutive jitter is the difference between the time values at Rx and Cx.
Consecutive jitter is calculated for all Cross-Overs of the USB2.0 signal.
Paired JK Jitter is defined as the jitter time for paired (JK next to KJ) differential
data transition. Paired KJ Jitter is defined as the jitter time for paired (KJ next to
194 TDSUSB2 Universal Serial Bus Measurement Package