Keysight Technologies 86120B, User Manual

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30
Getting Started
Cleaning Connections for Accurate Measurements
Visual inspection of fiber ends
Visual inspection of fiber ends can be helpful. Contamination or imperfections on
the cable end face can be detected as well as cracks or chips in the fiber itself. Use a
microscope (100X to 200X magnification) to inspect the entire end face for contam-
ination, raised metal, or dents in the metal as well as any other imperfections.
Inspect the fiber for cracks and chips. Visible imperfections not touching the fiber
core may not affect performance (unless the imperfections keep the fibers from con-
tacting).
WA R N I N G
Always remove both ends of fiber-optic cables from any
instrument, system, or device before visually inspecting the fiber
ends. Disable all optical sources before disconnecting fiber-optic
cables. Failure to do so may result in permanent injury to your
eyes.
Cleaning Connectors
The procedures in this section provide the proper steps for cleaning fiber-optic
cables and Keysight Technologies universal adapters. The initial cleaning, using the
alcohol as a solvent, gently removes any grit and oil. If a caked-on layer of material
is still present, (this can happen if the beryllium-copper sides of the ferrule retainer
get scraped and deposited on the end of the fiber during insertion of the cable), a
second cleaning should be performed. It is not uncommon for a cable or connector
to require more than one cleaning.
C A U T I O N
Keysight Technologies strongly recommends that index matching
compounds
not be applied to their instruments and accessories. Some
compounds, such as gels, may be difficult to remove and can contain