User's Manual

044-05326 Rev B 1-1
Chapter 1
Product Description
Introduction
This manual contains information and procedures for installation, operation, and maintenance of the Rack
Mount Radio module as part of the Nexus FT Rack Mount Repeater. In this manual, the Nexus FT Rack Mount
Radio is referred to as the RMR. The manual is organized into chapters as follows:
Scope of Manual
This manual is intended for use by service technicians familiar with similar types of equipment. It contains
required service information for the RMR and is current as of the printing date. Changes which occur after the
printing date may be incorporated by a complete manual revision or alternatively as additions.
Overview
The RMR is a repeater designed to be part of a Distributed Antenna System (DAS). The components are
mounted on a 19 in. rack and are intended for use in an indoor, temperature controlled environment.
As part of a DAS, the RMR extends coverage into uncovered areas in wireless mobile systems such as base
station fringe areas, tunnels, convention centers, airports, and buildings. It receives, amplifies, and transmits
signals to/from a Base Transceiver Station (BTS) and to/from Mobile Stations (MS).
The RMR unit is a dual wide band, bi-directional, RF amplifier with two separate donor ports and a common
(duplexed) service port per band. It connects to aFiber Base Distribution Unit (FBU) that combines, splits and
converts RF signals to an optical signal in the Uplink (UL) direction. In the Downlink (DL) direction, the FBU
converts optical signals to RF signals and splits the signal to RF outputs. Two separate full-duplex fibers handle
signal transport between the BTS Master Unit and the FBU. See the Fiber Base Unit Installation and Service
Manual (part number 044-05348) for more details. The DL signal and the UL signal combine onto one optical
fiber through a Wavelength Division Multiplexer (WDM). Wideband 4-way combiners handle RF splitting and
combining. The UL output signal is connected to the FBU via RF coax cable, converted to light, and sent via
fiber toward the BTS.
A Wireless Portal module distributes the DL/UL signals to/from the DAS.
The RMR is microprocessor controlled with alarm and operational status LEDs visible on the front. Cooling is
provided through forced air fans. Operational parameters are set using a PC running Powerwave OM-Online
software which communicates with the RMRs through the FBU or through a system solution. Remote operation
can be accomplished via Public Switched Telephone Network (PSTN) or a GSM net. The Operation and
Maintenance System (OMS) provides for Network Operations Center (NOC) configuration and alarm
monitoring.
Chapter 1- Product Description
Chapter 2- Indicators
Chapter 3- Installation
Chapter 4- Maintenance
Chapter 5- Specifications
DRAFT