User's Manual

Corning Restricted
Corning Optical Communications User Manual I CMA-482-AEN I Page 27
3.4.5 Power Safety Instructions
SAFETY WARNINGS! When installing or selecting the power supplies:
• Only use the power cables and any other relevant accessories provided with the unit to connect the power supply to the
system components.
• Be sure to disconnect all power sources before servicing.
• Calculate the required power according to the requirements of the specific installation and then determine the
configuration of the power supplies. The required DC cables will then be determined by the selected power supply
configuration.
• Use only UL approved power supplies
• Install external over-current protective devices for the system according to the requirements described in section 3.4.6.
3.4.6 Circuit Breakers
Calculate the required fuse protection while referring to section 3.4.1. Also, take into account when installing fuse protections
for the system that there may be other Corning system elements that require external fuse protection.
3.5 RF Coaxial Cable Guidelines
3.5.1 General Cable Installation Procedures
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-in.
• 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.
• Cable length - 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.
3.5.2 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
RAU5xs.
• 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 RAU5xs at the remote locations