User's Manual

ADCP-75-158 • Issue 1 • July 2003 • Section 2: Description
Page 2-9
© 2003, ADC Telecommunications, Inc.
3.2 Mounting
The RU cabinet may be mounted on a flat vertical surface (such as the side of building) on a
utility pole, or on a pedestal. A special mounting bracket is provided with each enclosure.
Installation consists of securing the bracket to the mounting surface and then hanging the
enclosure from the bracket. The mounting bracket may be attached to a variety of surfaces such
as wood, concrete, or masonry. Various fasteners including hex-head capscrews, tee-nuts, and
concrete anchors are provided. A pole-mount kit (accessory item) is available for mounting the
cabinet from a utility pole. A pedestal-mounting kit (accessory item) is available for mounting
the cabinet on a flat horizontal surface.
3.3 STM and LPA Module Installation
Two mounting slots are provided within the RU cabinet for installing the STM and LPA
modules. The mounting slots include tracks that guide each module into the installed position.
Separate mounting slots are provided for STM and LPA modules. Two D-sub connectors (one
male, one female) are located at the rear of each mounting slot. Each mounting slot connector
mates with a corresponding D-sub connector located on the rear side of each module. A wiring
harness links the mounting slot connectors together. The connectors and the attached wiring
harness provide the electrical interface between the STM and LPA modules. The modules are
held in the installed position with captive screws.
3.4 WDM and CWDM Installation
A mounting slot is provided within the RU cabinet for installing a WDM or CWDM remote
module (accessory items). Each module is equipped with push-pull type fasteners for securing
the module to the mounting slot. A power cable is included with the cabinet for providing power
when a CWDM module is installed. Fiber storage spools are provided for storing excess pigtail
and/or patch cord slack.
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.