Leitch X75HD - Handling and Connecting Fibers

X75HD Installation and Operation Manual 183
Appendix C: Servicing Instructions
Preliminary—Contents are proprietary and confidential. Do not photocopy or distribute.
Handling and Connecting Fibers
Class 1 Laser Products
The HD-X75 fiber optic module is a CLASS 1 laser product.
Avoid looking directly at a laser. Laser radiation is invisible and can
cause serious eye damage.
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” on page 184.)
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.
Caution
USE OF CONTROLS OR
ADJUSTMENTS OR
PERFORMANCE OF
PROCEDURES OTHER
THAN THOSE SPECIFIED IN
THIS MANUAL MAY
RESULT IN HAZARDOUS
RADIATION EXPOSURE.
LASER
!DANGER!
Class 1 Laser Product
Avoid Direct Exposure
Note
The HD-X75 comes with an SC
interconnection housings 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.