User Manual

ADCP-75-158 • Preliminary Issue A • June 2003 • Section 2: Description

Page 2-12

4 REMOTE UNIT INDOOR MOUNTING SHELF

The RU indoor mounting shelf, shown in Figure 2-5, is a rack-mountable framework that

provides the following basic functions:

• Supports the various electronic modules (STM and LPA) and accessories (WDM or

CWDM) for mounting within a standard 19-inch, WECO or EIA, equipment rack.

• Provides the electrical interface connections for the STM and LPA modules.

• Provides an AC power cord for powering the STM module

• Provides DC power connections for the CWDM module.

4.1 Primary Components

The RU indoor mounting shelf is a rack-mountable frame assembly that provides mounting

slots for the STM, LPA, WDM (accessory), and CWDM (accessory) modules plus connectors

and a wiring harness for interfacing the STM and LPA modules. The indoor mounting shelf is

designed for mounting in a standard 19-inch, EIA or WECO, equipment rack. The frame

assembly is constructed of aluminum and is painted putty white for corrosion protection.

Table 2-2. Remote Unit Cabinet User Interface

REF

DEVICE FUNCTIONAL DESCRIPTION

1 Air inlet filter Reusable filter that prevents the entry of dirt particles when out-

side air is pulled into the cabinet for cooling.

2 AC power cord Provides AC power to the STM.

3 Door switch Indicates to the fault detection and alarm reporting system if the

cabinet door is open (major alarm) or closed.

4 LPA mounting slot Provides a mounting point for the LPA module.

5 STM mounting slot Provides a mounting point for the STM module.

6 WDM/CWDM mounting

slot

Provides a mounting point for either the WDM or CWDM mod-

ule.

7 CWDM power cord Provides DC power to the CWDM module.

8 Fiber slack spools Provide a storage place for excess fiber pigtail and patch cord

slack.

9 Lightning protector Provides lightning surge protection for the antenna connection.

10 Fiber cable connector Provides both an entry point and strain relief for the fiber optic

cable.

11 3/4-inch NPT threaded hole Provides a connection point for a 3/4-inch AC conduit fitting.

12 Grounding lug Provides a connection point for an external grounding cable.