EXFO iOLM - Manual (Page 117)

Managing Results
intelligent Optical Link Mapper 111
Link View
Elements before A and after B are referred to as out of span elements.
Elements out of the span are not tested for pass/fail status, but can have
diagnostics on them. If the receive fiber is not defined, the element marked
as "B" will not be tested for pass/fail.
Link Composition
The link composition is described below.

Element position: The distance of the element from the beginning of
the link under test.

Navigation Arrow: The navigation arrow is only displayed when more
items are available on a particular side. It indicates that you have to
scroll to view those items.

Selected Element: The gray background represents the currently
selected element.

Letter A: The beginning of the link under test.
Navigation arrow
Selected
element Section
Distance unit
Splitter
ratio Element
Fail icon Element
Pass icon
Diagnostics icon
Element
position
Pass/Fail
not tested
Standard measurement
Loopback measurement
Loop
start Loop
end