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termination points for the coaxial antenna cable, fiber optic cable, ground cable, and AC cable.
The cabinet has inbuilt AC power surge protection and limited storage for fiber optic cables.
1.6.1
Mounting
The RAN cabinet may be mounted on a wood pole or on a concrete pad. Mounting bracket kits
(available from ADC) are required for each type of installation.
1.6.2
Fiber Optic Cable Entry
A nylon connector is provided on the rear of the RAN cabinet for routing a fiber optic cable into
the cabinet. 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 connector
accommodates cables of a diameter in the range .38 to .50 inches (.97 to 1.27 cm).
If the installer has a larger cable, the manufacturer (Hubbell Inc.) makes bushings
Note:
that fit this connector in the following size ranges: .500-.625, .625-.750, .750-.875, .875-
1.00, 1.00-1.125 inches.
In a typical installation, the connectorized end of a multi-fiber OSP cable is routed into the
cabinet through the cord connector and the individual fibers are connected to the optical
transceiver on the Synchronous Interface Card (SIF). Excess slack is stored inside the cabinet.
The stub end of the cable is routed to an external splice enclosure (not provided) for splicing to
the outside plant fiber optic cable.
1.6.3
Antenna Cable Connections
Five N-type plugs are provided on the rear of the RAN cabinet for connecting the antenna
coaxial cables. On the inside of the cabinet, coaxial jumper cables (included with the cabinet)
are used for connecting to the antenna port on the appropriate multiplexer.
1.6.4
AC Power Wiring Entry and Grounding
The NXD RAN uses 240 VAC power. A one inch (2.54 cm), 90 degree rigid elbow conduit
fitting is provided on the rear of the cabinet. The conduit should be routed to an external
junction box (not provided). It is suggested that an external AC outlet (not provided) be installed
near the cabinet to power test equipment and power tools. The AC source should supply 50/60
Hz, single-phase power through a circuit breaker rated at 20 Amps.
1.6.5
Ventilation
Ventilation openings are provided in the front door of the RAN cabinet to permit entry of air for
cooling. A filter removes dirt particles so that only clean air enters the cabinet. The heated air
exits the cabinet through the rear side. The four PAAs are each equipped with three cooling fans
that pull air through the module and exhaust it to the rear of the cabinet. A fan assembly at the
top of the RAN chassis forces the air out the rear side of the cabinet.
ADCP-75-210 • Issue 1 • March 2007
© 2007, ADC Telecommunications, Inc.
Page 9
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