User's Manual

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iPasolink250 Installation and Commissioning Guide Document ID: 141-DOC000008-E
12. Inspect the fiber-optic connector with an optical fiber scope to verify whether it is free of dirt
and dust.
13. Cover the connector with a protective dust cover until it is ready to be used.
Cleaning Optical Connectors
It is important to keep all interconnects as clean as possible. Since the single-mode fiber has a
light-carrying core with diameter less than 10 micro meters, even a single microscopic speck of
dust on the connector end can significantly attenuate the light traveling through the fiber. Clean
connections are required for accurate and repeatable measurements. Leave the protective dust
covers on the connectors when they are not in use.
Observe the following guidelines to achieve the best performance:
 Visually inspect fiber ends to locate any signs of damage.
 Use dry connections whenever possible.
 Keep connectors covered when not in use.
For more information on cleaning procedure, refer to " Cleaning Fiber Connectors on page
75".
CAUTION: Improper cleaning may result in high attenuation due to dirt or dust or
may cause mechanical damage to the fiber end, resulting in performance degradation. While
handling an optical fiber, do not exceed the minimum bed radius (35 mm). Do not over
tighten the cable tie wraps while dressing the cable.
DANGER: Do not look into the end of fiber-optic connectors or into faceplate
connectors of installed circuit packs. The light source used in fiber-optic devices can damage
your eyes.
The following items are recommended for cleaning the optical connectors:
 99% isopropyl or ethyl alcohol
 Lint-free, non abrasive optical-quality cleaning pads or lens tissue, or cotton or urethane-
foam swabs.
 Pressurized dry-air duster.
 Optical fiber scope.