User`s guide

If you change your view to the clock histogram (see figure below) you will see that there is a positive histogram
centered at 320ps and a negative one at –320ps.
When this tool measured the clock to get the UI, the mean of these 2 histograms was 212ps (see the summary in
Table 1 below). Thus, when the data is mirrored to the other side of the clock (see DataBus measurement theory)
it's not the correct distance.
Table 1: DataBus Summary
Ref Chan 3
Chan 3 to 5
DJ(pk-pk) 1.276185ns 5.106ps
Lt-rmsJ 1.226ps 3.786ps
Rt-rmsJ 3.627ps 5.037ps
Ave-rmsJ 2.427ps 4.411ps
TJ 39.616ps 65.48ps
1-Sigma 232.137ps 5.718ps
Maximum 326.255ps 180.262ps
Minimum -0.974406ns 134.361ps
Pk-Pk 1.300662ns 45.901ps
Unit Interval 212.002ps 321.493ps
Avg-Skew 155.599ps
Chi-Squared Lt 7.220909
Chi-Squared Rt 55.298004
Channel Voltages -0.002872V -0.002431V
Duty Cycle 47.651066%
Hits 270,000 435,231
© WAVECREST Corporation 2005 Glossary
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