VeEX VePal TX130M+, Руководство пользователя

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Absolute Phase differences between Core Network and edge nodes, or between edge nodes, create timing problems.
LTE TTD:
Maximum time error allowed at the NodeB is ±1.5µs
Maximum time error allowed between adjacent NodeB is ±3µs
A portable GPS-disciplined Clock is usually the reference used at the NodeB to compare the standard second against the 1PPS
recovered by the PTP clock Translator (e.g. 1588v2). Phase error measurements are also used to adjust GPS receivers, to
compensate for physical delays.
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24.5.2 Setup
1PPS Phase Analysis compares the phase difference between two 1PPS Clocks. Resolution is 10 ns.
Save TIE to USB:
OFF presents the current real time TIE measurements on screen only. ON sends real time TIE measurements
to an attached USB memory, for further post analysis.
Mode:
Manual or Timed
1PPS Phase Analysis - Home (Setup)
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24.5.3 Result
The Results screen shows ET, Current, Minimum, and Maximum phase difference values measured.
1PPS Phase Analysis - Result
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