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Ethernet
TIE Results
TIE Results
1. Date and Time stamp indicating when the test was started
2. Total of seconds recorded during the test
3. Beginning and end of the data set to be analyzed and displayed in the graph (5) below. Tap in the
Start and/or End field and enter the desired time limits, then press the Set Range button to apply
these changes.
4. Based on all the TIE measurements captured, the test set automatically calculates any small dif-
ference in frequency between the signal under test and the reference clock. Once the frequency dif-
ference is known, remove it to perform Relative TIE measurements. The offset removal tool is
important for field tests when the local reference clock used is highly accurate and stable but not
traceable to the PRC in the network core (e.g. a portable frequency reference). Even if the frequency
of the local reference is a few ppb (parts per billion) different than the PRC, it can still be used for
wander measurements, as long as it is highly stable, because the Offset Removal feature can math-
ematically remove the know difference and make it as if a traceable reference had been used. Once
removed, perform a relative MTIE (or MRTIE) and TDEV analysis.
5. Auto-scale TIE graph, based on the limits set.
6. Press the Measurement button to return to the current wander measurements
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