EXFO FTB-5600 Distributed PMD Analyzer User Manual
Page 74
Managing Results
68
FTB-5600
Section Status
Unstable Link
(Unst)
The first or last point in
the section shows
strong polarization
unstability.
The section shows
strong polarization
unstability.
Unstable sections
occur when on the
link, the polarization
moves at a speed
faster than the
acquisition time of a
wavelength’s step.
This phenomenon can
occur mainly when
measuring aerial links
when there are strong
winds.
Any section after an
unstable section is
unstable as well. To
improve the situation,
you can decrease
significantly the
number of averages.
Status
In PMD column
In Status column
Suggestion
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