X75HD/X75SD Installation and Operation Manual 259
Appendix C: Servicing
General Precautions
Please take the following precautions when working with fiber optics:
• Never touch the end face of an optical fiber.
• Do not place optical fibers under heavy objects.
• Transmission characteristics of the fiber are dependent on the shape
of the optical core; therefore, care must be taken to prevent fiber
compression.
• Avoid abrupt fiber bending.
A suggested minimum bending radius is 1.2 in. (3 cm). Bending
radii smaller than this can lead to fiber bending loss which will
decrease the maximum attainable link length by decreasing the
available power budget.
• Make fiber interconnections very secure.
• Clean fiber every time that it is mated or unmated. (See “Cleaning
Optical Fibers” below.)
As dust particles on the ends of the optical fiber can add up to 1 dB
of loss, it is important to clean them regularly. Larger dust particles
can totally obscure light altogether.
• Cover a fiber immediately when unmated.
Most fiber manufacturers provide a plastic boot that fits over the
ferrule body for this purpose.
• Remove dust particles from the housing assembly with a blast of
dry air when using interconnection housing to mate two optical
fibres.
Cleaning Optical Fibers
Required Cleaning Equipment
Optical fibers must always be cleaned before mating and after
unmating. You will need the following items:
• “Kimwipes” or a lens-grade, lint-free tissue
• Denatured alcohol
• Canned dry air
Note
The X75SPR-HD is supplied
with an SC interconnection
housing built into the module.
With this style of connector, the
fiber assembly and the housing
assembly can only be connected
in one way and with very good
repeatability. The optical fiber
with SC connectors must be
customer supplied.
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