EXFO FTB-5600 Distributed PMD Analyzer User Manual
Page 138
Optimizing Measurements
132
FTB-5600
Use an Appropriate Spatial Smoothing Filter Value
Below is an example of applying different filter values to a same trace. The
first curve has a filter of 100 m applied to it. The noise is quite visible and
the PMD changes are sharp. Attempting to take measurements on this
trace without a filter is not recommended, as there is too much noise.
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