User's Manual

Table Of Contents
Installation Guidelines CMA-331-AEN Page 61
Draft
4.6 RF Coaxial Cable Guidelines
4.6.1 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”.
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.
4.6.2 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