User Manual

ADCP-75-159 • Issue 1 • August 2003 • Section 2: Description

Page 2-9

3.1 Primary Components

The RU outdoor cabinet consists of the enclosure, mounting slots for the STM and LPA modules,

connectors and a wiring harness for interfacing the STM and LPA modules, a mounting slot for

either the WDM or CWDM module (accessory items), lightning protector, and two fiber storage

spools. The RU outdoor cabinet is designed for use in an outdoor environment. Opening the

hinged door provides full height and width access to the interior of the enclosure to facilitate

module and cable installation.

The enclosure is constructed of heavy gauge aluminum and is painted putty white for corrosion

protection. Connection and/or entry points are provided in the bottom of the enclosure for the

antenna coaxial cable, fiber optic cable, and AC power cable. Vent openings are provided in the

bottom of the enclosure to permit air exchange for cooling. The RU cabinet is weather-tight but

contact with salt-air mist should be avoided as it may degrade the Mean Time Between Failure

(MTBF) of the product. Drain holes in the bottom of the cabinet allow any moisture that does

enter the cabinet to drain out. The cabinet door is equipped with a sturdy latch so that the

enclosure may be padlocked to prevent unauthorized entry. A door open switch is provided so

that a major alarm is generated whenever the cabinet door is opened.

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.