User Manual

ADCP-75-159 • Issue 1 • August 2003 • Section 2: Description
Page 2-10
© 2003, ADC Telecommunications, Inc.
3.5 Fiber Optic Cable Entry
A plastic cord connector is provided in the exterior bottom side of the RU cabinet for routing a
fiber optic cable into the enclosure. The cord connector provides cable strain relief and a
watertight seal at the fiber optic cable entry point. As the connector nut is tightened, a soft
neoprene bushing compresses to tightly grip the cable without applying excessive force to the
fibers. The cord connector can accommodate cables that range from 0.375 to 0.875 inches (10 to
23 mm) in diameter. A spool is provided directly above the fiber optic cable entry hole for
storing excess pigtail slack.
In a typical installation, the connectorized end of a multi-fiber outside plant cable is routed into
the enclosure through the cord connector and the individual fibers are broken out into pigtails.
The pigtails are connected to the optical ports on the STM and the excess pigtail slack is stored
on the fiber storage spool. The stub end of the cable is routed to an external splice enclosure (not
provided) for splicing to the fiber optic cable.
3.6 Antenna Cable Connection
An N-type female connector is provided on the exterior bottom side of the RU cabinet for
connecting the antenna coaxial cable. The exterior N-type connector is on the surge side of a
lightning protector that is mounted within the enclosure. On the inside of the enclosure, the
protected side of the lightning protector is also equipped with an N-type female connector. A
coaxial jumper cable (included with the enclosure) is used for connecting the protected side of
the lightning protector to the ANTENNA port on the STM.
3.7 AC Power Wiring and Grounding
The RU outdoor cabinet is equipped with a stub cable for the AC power connections. The AC
power cable provides three wire leads (Load, Neutral, and Ground) that must be connected to a
120 or 240 VAC power source. The AC power cable exits the cabinet though a 3/4-inch NPT
threaded hole located on the bottom of the cabinet. The threaded hole accepts a standard 3/4-
inch AC conduit fitting. A 3/4-inch to 1/2-inch reducer is also included if 1/2-inch conduit is
preferred over 3/4-inch conduit.
From the exit point in the bottom of the cabinet, the AC power cable must be routed through
conduit to an external AC junction box (not provided) where it can be connected to the AC
power wiring. The junction box should be located within two feet of the cabinet and should be
equipped with a 120 VAC GFCI outlet for powering test equipment and/or power tools. If AC
power spikes are likely to occur, the junction box should also include a surge protector to
protect the equipment from damage.
Three wire nuts are included with the cabinet for completing the AC power wiring connections.
The junction box wiring should be connected to the AC power source through a 20 Amp breaker
box (not provided). All AC power wiring should be run within conduit. A grounding lug is
provided on the underside of the enclosure for connecting a separate grounding wire directly to
the cabinet.