User Manual

ADCP-75-179 • Preliminary Issue A • September 2004 • Section 1: Overview

Page 1-10

The RU is designed for mounting in either an indoor or outdoor environment. The RU consists

of a Spectrum Transport Module (STM), a Linear Power Amplifier (LPA) module, WDM

remote module (accessory), CWDM remote module (accessory), and either an outdoor cabinet

or a indoor mounting shelf.

Several types of outdoor cabinets are available. Each outdoor cabinet is weather-tight but

contact with salt-air mist should be avoided as it may degrade the MTBF of the product. Out-

door cabinets can be mounted from a flat-vertical surface or a utility pole (requires pole-mount

kit). Slots are provided within each cabinet for mounting the STM and LPA modules and also

the WDM or CWDM remote modules. Storage spools are provided within the cabinet for

storing short lengths of excess fiber slack. Specified cabinets include a tray with a heated base

for mounting a back-up battery (accessory item).

A indoor mounting shelf for indoor use is also available. The indoor mounting shelf is designed

for installation in a non-condensing indoor environment such as inside a wiring closet or within

an environmentally-controlled cabinet. The indoor mounting shelf installs in a standard EIA or

WECO, 19- or 23-inch, equipment rack. Slots are provided within the mounting shelf for

mounting the STM and LPA modules and also the WDM or CWDM remote modules.