Installation guide

Overview
18 FTTH Application Guide
There are testing tools on the market which can be used to test the
components as added.
The actual figures that are discovered during installation testing should also
be noted and filed as they may also be helpful when troubleshooting problems
which may arise in the ODN in the future.
Handling fiber
Handling of fiber requires special precautions for those familiar with copper
wiring.
WARNING!
Never look into an active optical fiber. Exposure to invisible
LASER radiation may cause serious retinal damage or even
blindness.
WARNING! Clean hands after handling optical fibers. Small
pieces of glass are not always visible and can cause eye damage.
Get medical assistance immediately for any glass that comes into
contact with your eye.
Fiber needs to be kept clean. Contaminents may obstruct the passing of light.
Notable contaminents include
• oil from hands
• dust particles
• lint
• the residue which may be left when using wet cleaning methods
• scratches which may be from dry cleaning methods or mishandling fiber.
Fiber requires a handling discipline which includes
• inspecting fiber ends (with a fiber inspection probe)
• cleaning fiber, with either a wet cleaning method, dry cleaning method or
both.
• fiber cannot be bent too far. Bending fiber too far will keep the optical
signal from bending. You may see the light through the sheething of the
cable. These macrobends may also create microfractures in the glass of
the fiber resulting in signal loss.
Please see Chapter A, Appendix: Handling fiber, on page 107 for more detail
with handling fiber optic cables and other important layer 1 physical issues.