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Appendix C:
Considerations on Duplex Multi-Mode Optical Fiber Installation
1. The
OM3 multi-mode
untwisted-pair
fiber optics cable
(50/125 and 62.5/125)
terminated with
SC duplex connectors
is recommended to use for the
interconnection between
Computer Unit
and
Console Unit
. The table below
shows the specifications.
Cable Diameter
(Micron)
50/125uM
62.5/125uM
Video
Signal
1080i 1080p 1080i 1080p
Max. Cable Length
(meter)
2000 1000 700 350
2. Users may need to order appropriate cable lengths conforming to the
application environment; however, the maximum cable length should
not
exceed 2,000 meters;
otherwise, the signal degradation may occur especially
for video resolution.
3. Check the cable length to make sure the cable being pulled is long enough for
the run to prevent having to splice fiber. Try to
complete the installation in
one pull
. Prior to any installation, assess the route carefully to determine the
methods of installation and obstacles likely to be encountered.
4. Do not exceed the
cable bend radius
. Fiber optic cable can be broken when
kinked or bent too tightly, especially during pulling.
5. Do
not
twist the cable
. Twisting the cable can stress the fibers. Tension on
the cable and pulling ropes can cause twisting.
6. Don’t look into the ends of any fiber optic cables. Exposure to
invisible laser
radiation
may result.
7.
Connector and Splice loss
is caused by a number of factors, loss will be
minimized when the number of connection and Splice is reduced, and the two
fiber cores are identical and perfectly aligned
, the connectors or splices are
properly finished and no dirt is present.
8. Although most fiber optic cables are not conductive, any metallic hardware
used in fiber optic cabling systems (such as wall-mounted termination boxes,
racks, and patch panels) must be grounded.
