User's Manual

ADCP-75-210 • Issue 1 • November 2006
Page 33
© 2006, ADC Telecommunications, Inc.
In a pole mount installation, the power meter is typically installed on the pole below the unit in
separate boxes. In a concrete pad installation, an external junction box is typically placed near
the RAN providing AC power, surge protection, and circuit breakers.
2.4.3 Antenna Requirement
ADC offers a pole-mount antenna kit (accessory) for use when the RAN is mounted on a
wooden utility pole. Either a 2 in. (5.08 cm) O.D. model or a 9 in. (22.86 cm) O.D. model can
be ordered. Pole mounting is the most common installation. The antenna interfaces with the
PCS and Cellular/SMR bands and supports two branch diversity receive paths. Also included in
the kit is the GPS antenna used by the RAN. Installation instructions for the pole mount antenna
are included with the kit.
When the RAN is mounted on a concrete pad, a conventional directional antenna may be used
(customer supplied). The antenna may be set to operate in either a sector or quasi-omni
configuration, depending on the coverage objective and design. Proper antenna selection and the
mounting installation are the responsibility of the design engineer.
2.4.4 RF Cable Requirements
RF cables are required at the installation site to provide the physical link between the RAN and
the antenna. In a pole-mount installation, U-duct of an appropriate size is also required to cover
the RF cables on the pole. The U-duct provides only physical protection. It should not be
considered to provide electrical isolation from conductors on the pole. Adequate clearance must
be obtained for the routing of these cables past the existing services as defined in the previous
topic. In a concrete pad installation, RF cables from the antenna are routed and protected per the
installation plan provided by the design engineer.
2.4.5 Fiber Requirements
Optical fibers are required at the site to provide the physical link between the RAN and the Hub.
In a typical installation, the identified fibers are broken out of a multi-fiber sheath and routed to
a splice box where they are spliced to pigtails connecting the main sheath to the RAN. The
actual fiber bundle location on the utility pole may vary per the agreed to attachment point.
Refer to Figure 24. The nylon cable connector on the rear of the RAN accommodates cables of
a diameter in the range .38 to .50 inches (.97 to 1.27 cm). For larger size cables, refer to
Section 1.6.2 on Page 9.