Fluke DTX-1800 Technical Reference Handbook page 167

Always cover unused connectors with protective caps. Clean
caps periodically with a swab or wipe and fiber optic solvent.
Cleaning the OTDR Ports
Use a dry, optical-grade wipe to clean the OTDR ports.
Figure 7-4 shows how to remove the OTDR adapter to
access the connector ferrule.
The OTDR port connection quality screen helps you
determine when the OTDR ports needs cleaning. See page
7-21.
If the port is very dirty, wipe the end of the ferrule with an
optical-grade wipe lightly moistened with fiber optic
solvent. Dry with a dry wipe.
Inspect the ports with a fiber microscope at regular
intervals.
Using the OTDR Module
Setting Up for OTDR Testing
Unlocking and
removing the
adapter
Cleaning the ferrule
(see text for details)
Locking the
adapter in place
Figure 7-4. Cleaning the OTDR Ports
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