User's Manual

Corning Optical Communications DRAFT User Manual I CMA-XXX-AEN I Page 33
3.2.6 RF Coaxial Cable Guidelines
3.2.6.1 Considerations for Cable Type and Installation Procedure Guidelines
Note: The installer should be familiar with the ANSI/TIA/EIS-568 Cabling Standard guidelines.
• Observe the general cable installation procedures that meet with the building codes in your area.
• The building code requires that all cabling be installed above ceiling level (where applicable). The length of cable from the
risers to each antenna must be concealed above the ceiling.
• The cable must be properly supported and maintained straight using velcro cable ties, cable trays and clamps or hangers
every 10 feet (where practical above ceiling level).
Where this is not practical, the following should be observed:
− The minimum bending radius of the supplied ½” coax cable should be 7”.
− Cable that is kinked or has a bending radius smaller than 7” must be replaced.
− Cable runs that span less than two floors should be secured to suitably located mechanical structures.
− The cables should be supported only from the building structure.
• All cables shall be weather-resistant type
.
• The cable length is determined by the system installation plan. When calculating the cable length, take into account excess
cable slack so as not to limit the insertion paths.
3.2.6.2 RF Rules
• Use coax RG-223, 50 ohm, male-to-male N-type to QMA for RF connections from the RIMs to the BTS/RBS and to the
RAUs.
• When using the Corning system in an environment in which other indoor coverage systems are installed, it is recommended
(where possible) that the antennas are placed at least two meters apart
• When bending coax cables, verify that the bending radius does not exceed the coax specifications.
• Use a VSWR meter (i.e. Site Master or equivalent) for checking coax cables, including the antennas. (<2). The VSWR must
be measured prior to terminating the RAUs at the remote locations.
3.2.7 Fiber Optic Requirements
3.2.7.1 Authorized Optic Cables
The following specified optic cables are authorized for use with Corning optical network evolution (ONE
™
) products:
Vertical
Horizontal
Plug & Play™ Plenum Optical cables
MTP Fiber Connectors
12 – 144 fibers
2-sided or 1-sided
Armored, non-armored
Composite Plenum Tether Assemblies
Fiber: LC APC, 2 – 24 fibers
Cu: 16 AWG, 14 AWG, 12 AWG; 2 – 12 Conductors
Armored, non-armored
3.2.7.2 Fiber Optic Rules
• Use only MTP
®
or LC APC connectors
• UniCam connectors can be used for field termination
• Use only fusion splice for connecting two fibers
• Use minimum splicing/connectors to achieve minimum losses on the fibers (< 0.5 dB)
• Use precaution while installing, bending, or connecting fiber optic cables:
− Fiber optic cable is sensitive to excessive pulling, bending and crushing forces. Consult the cable specification sheet for
the cable you are installing.
− Do not bend cable more sharply than the minimum recommended bend radius.
− Do not apply more pulling force to the cable than specified.