Fluke FIBER ONESHOT PRO User Manual page 23

If the reflectance or loss of a connection is higher than the limit:

A connector endface is dirty or damaged.

A connector is loose.

The cable is damaged within about 3 m of the connector.

The connection is between fibers of different types.

The fiber has a bad splice or a sharp bend.
If you used launch and receive fibers, be sure to
subtract their lengths from the length measurements.
The troubleshooter does not save the loss and
reflection limits you used for the test.
The next time you do a test, the measurement
(reflectance or loss) that shows first is the one you
looked at last.
The troubleshooter can show these results in the given
situations:
The troubleshooter shows

The connection to the troubleshooter is bad.

The connector on the troubleshooter or the fiber is dirty.
See page 10 for instructions on how to clean the
connectors.

A break, bad connection, or the end of the fiber is less than
2 m from the troubleshooter.

The troubleshooter is connected to a PC connector. PC
connectors cause large reflections that the troubleshooter
shows as the end of the fiber.
The troubleshooter shows
The fiber is longer than the troubleshooter can measure.
Notes
 
m or ft.

m or
Measurement Results

ft.
19