Fluke DTX-1800 Technical Reference Handbook page 191

A
Reflective event caused by the OTDR port connection.
B
Reflective event caused by the first connection in the
cabling. This trace was produced using launch fiber
compensation, so the end of the launch fiber is marked
with a dotted line and is the 0 m point for length
measurements.
C
Small event caused by a sharp bend in the fiber.
Looking at OTDR Test Results
D
Reflective event caused by the last connection in the
cabling. The dotted line marks the end of the fiber under
test and the beginning of the receive fiber.
E
Reflective event caused by the end of the receive fiber.
F
Overall loss of the cabling. Since launch and receive fiber
compensation was used, the overall loss excludes the loss
of the launch and receive fibers.
See "Diagnosing OTDR Test Failures" on page 10-5 for
descriptions of faults fiber cabling.
Using the OTDR Module
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