User's Manual

MM102554V1 REV B
35
6.4 INTERIOR RF CABLING
Some RF coaxial cables may be pre-made and included with the system. However, most cables must be
custom made, on site, to the required length. Table 6-1 lists the cables and associated connectors, which
are typically fabricated at the site.
The coaxial cable and connectors are supplied in bulk. To cut the cable properly for easy connector
attachment, use an Andrew's "EASIAX" coaxial cable cutting tool (or equivalent).
NOTE
When installing the RF or power cables, refer to the Antenna System Block Diagrams in LBI-
38983 and the Application Assembly Diagrams in technical manual MM102556V1 for in
installation instructions.
6.4.1 Cable Routing
If cabinet-top cable ducts are supplied, install per LBI-38875 using the hardware provided. However,
leave the duct covers off until the site wiring is complete. These cable ducts are not available for open-
type equipment racks.
Larger systems should make use of cable ladders for ease of installation and maintenance. It is preferable
that dual ladders be used for large systems such that audio and data may occupy one level of the ladder
and RF and power occupy the other. If dual systems are not available, ensure maximum separation
between Audio/Data runs and RF/Power runs.
Install as shown on the site plans and install all grounding leads across ladder section connections.
6.4.2 Install RF Cables
Assemble and install the RF coaxial cables. Be careful not to exceed minimum bend radius (refer to Site
Preparation - Antenna System for specifications).
Refer to the Antenna Systems Assembly Manual LBI-38983 and applicable vendor manuals for TX and
RX connection points. (For specially engineered systems, refer to the Site Antenna System drawings for
the site.)
Use cable ties to secure the coaxial cables to the back rails of the cabinets. Ensure cables do not impede
access to the internal equipment and the installation appears neat and orderly. Exercise caution and
ensure cables are routed away from the sharp ends of mounting screws (on the backside of the equipment
rails). Allow room for equipment mounting screws to be removed and re-installed without damaging the
cables.
NOTE
If overhead cable ladders are used, ensure the RF cable are of sufficient length to run from
point A to point B via the cable ladder. Do not loosely ‘drape’ cables on the top of cable
ladders or racks.
Begin the cable installation by installing receiver cables first. Then complete the installation by installing
the transmitter cables.