Powerwave Technologies 5JS0108 Users manual

WIDEBAND RADIO HEAD

INSTALLA TION AND SERVICE MANUAL

WRH

NEXUS FT

044-05251 Rev B March 2008

© 2008 Powerwave Technologies Incorporated. All rights reserved.

Powerwave Technologies and the Powerwave logo are registered trademarks.

Powerwave Technologies Inc. reserves the right to make changes to documentation and equipment, including but not
limited to component substitution and circuitry changes. Changes that impact this document may be subsequently
incorporated in a later revision of this document.

This Powerwave product is designed to operate within the Normal Operating (typical operating) ranges or conditions
specified in this document. Operation of this equipment beyond the specified ranges in this document may cause (1)
spurious emissions that violate regulatory requirements; (2) the equipment to be automatically removed from service
when maximum thresholds are exceeded; or (3) the equipment to not perform in accordance with its specifications. It is
the Operator's responsibility to ensure this equipment is properly installed and operated within Powerwave operating
specifications to obtain proper performance from the equipment and to comply with regulatory requirements.

The rated output power of a Nexus FT is for multiple carriers. As long as the composite power does not exceed the
rated power (20W for North America), derating is not required for multiple carriers. For situations where regulatory
requirements require reduced interference to adjacent band users, the rating would have to be reduced by 3 dB. This
power reduction is to be by means of input power or gain reduction and not by an attenuator at the output of the device.
Input power is rated at 115/230VAC, 50/60Hz, and should be protected based on the power and fuse specifications in
Chapter 5 of this manual. Power strips should, at a minimum, conform to this requirement to prevent equipment dam­age and possible overload.

Federal Communications Commission (FCC)

This device complies with the technical standards governing mobile radio devices in accordance with FCC Rules. This
device is intended to facilitate the reception and transmission of mobile radio devices in the cellular, PCS or other
mobile services, and its operation by end users or others requires carrier consent under FCC rules. This equipment has
been tested and found to comply with the limits for a Class A digital device, pursuant to CRF47 part 15 of the FCC
rules. This equipment is also certified to CRF47 part 22 (cellular), part 24 (PCS), part 27 and part 90 (public safety) of
the FCC Rules depending on the band of operation. Changes or modifications not expressly approved by Powerwave
Technologies, Inc. for compliance could void the user’s authority to operate this equipment. These limits are designed
to provide reasonable protection against harmful interference when the equipment is operated in a commercial environ­ment. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accor­dance with the instruction manual, may cause harmful interference to radio communications. Operation of this
equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct
the interference at his own expense.

Industry Canadian Requirements

All Powerwave apparatus introduced in the Canadian market meet all requirements of the Canadian Interference-Caus­ing Equipment Regulations. The -20dB bandwidth at 1900 MHz band is 80 MHz. The -20dB bandwidth at the 850 MHz
is 34 MHz. The output impedance of the unit referenced in this document is 50 Ohms. The -20dB bandwidth at IDEN
800MHz band is 26 MHz. The Manufacturer's rated output power of this equipment is for single carrier operation. For
situations when multiple carrier signals are present, the rating would have to be reduced. For example, at IDEN
800MHz band, the rating would have to be reduced by 3.5 dB, especially where the output signal is re-radiated and can
cause interference to adjacent band users. This power reduction is to be by means of input power or gain reduction and
not by an attenuator at the output of the device. The input signal is optical so input impedance requirements are not
applicable.

European Requirements

The Powerwave Nexus FT apparatus introduced in EU markets are certified to ESTI EN 300 609-4 (GSM900 and
DCS1800) and ESTI EN 301 908-11 (WCDMA).

Powerwave Technologies Inc., 1801 East St. Andrew Place, CA 92705 Santa Ana, USA.
Phone [phone] – Fax [phone] – Internet www.powerwave.com

Warnings, Cautions, and Notes

Warnings, Cautions, and Notes are found throughout this manual where applicable. The associated
icons in warnings and cautions are used to quickly identify a potential condition that could result in the
consequences described below if precautions are not taken. Notes clarify and provide additional
information to assist the user.

WARNING: The warning symbol means danger. You are in a situation that could cause
bodily injury or death. Before you work on any equipment, be aware of the hazards
involved with electrical and RF circuitry and be familiar with standard practices for
preventing accidents.

CAUTION: The caution symbol means the potential exists for equipment damage or loss
of data.

NOTE

Notes contain helpful suggestions or references to material not covered in the document.

044-05251 Rev B i

Revision Record Nexus FT

Revision Record

Revision Letter Date of Change Reason for Change

Rev A November 2007 Initial Release

Rev B March 2008 Renamed product to Nexus FT, added new

Chapter 1 - Preface, added text regarding
FON maintenance to pag

es 3-8 and 4

-6.

ii 044-05251 Rev B

TABLE OF CONTENTS

Preface

Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vii

Human Exposure to RF Radiation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .viii

Antennas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . viii

Installation and Maintenance of Antenna Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . viii

Radiation Exposure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . viii

Electrostatic Discharge (ESD) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . viii

Chapter 1 - Product Description

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

Scope of Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

Chassis Design . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2

Wideband Amplifier PCBA (WBA) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2

Multi-Carrier Power Amplifier PCBA (MCPA) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2

Distribution PCBA (DIA) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

Control Unit PCBA (CU) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

Low Noise Amplifier (LNA) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

Duplex Filter (DPX) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4

Fiber Optic Unit (FOU) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4

Fiber Optic Node (FON) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4

Power Supply Unit (PSU) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4

Remote Control Unit (RCU) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4

Alarm Interface PCBA (ALI) and Remote Control Interface PCBA (RCI) . . . . . . . . . . . . . . . . . . . 1-5

Chapter 2 - Controls, Indicators and Connectors

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

Front Cover Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

Cabinet Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

PCBA Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2

PCBA Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3

Software and Hardware Compatibility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8

Chapter 3 - Installation

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

Site Survey . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

Unpacking and Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

WRH Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4

Main Power and Grounding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4

Fiber Optic and RF Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4

WRH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5

Optional Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6

Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6

External Alarm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6

Door Open Alarm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6

Main Power Breakdown Relay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6

21-60 Volt DC PSU Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7

Commissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7

Initial Startup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-8

044-05251 Rev B iii

Table of Contents Nexus FT

Passive Intermodulation (PIM) Testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-9

Chapter 4 - Maintenance

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

Periodic Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

Clearing Alarm Faults . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

Field Replaceable Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6

FON . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6

PSU . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-7

WRH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-8

Remote Control Unit (RCU) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-8

RCU for Radio Communication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-9

RCU for Telephone Line Communication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-9

Return For Service Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-9

Obtaining an RMA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-9

Repackaging for Shipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-9

Chapter 5 - Specifications

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1

Appendix A - Block Diagrams

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1

Non-Diversity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1

Diversity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-2

List of Figures

1-1 Powerwave WRH Radio Head . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

1-2 DIA PCBA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

1-3 CU PCBA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

1-4 LNA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4

1-5 FOU in Nexus FT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4

1-6 Nexus FT Sub Unit Locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5

1-7 Fiber Optic Star Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6

1-8 Multi-operator System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6

2-1 External Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

2-2 Cabinet Internal Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

2-3 CU PCBA Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2

2-4 FON LED Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3

2-5 DIA PCBA Connectors and Testpoints . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4

2-6 LNA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6

2-7 FON Connector Locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6

2-8 PSU Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7

3-1 -Mounting Bracket . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2

3-2 Mounting Bracket Installation on Wall . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2

3-3 Attaching the Bracket to a Pole . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3

3-4 Attaching the Bracket to a Mast . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3

3-5 Attaching the WRH to the Bracket . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4

3-6 WRH Cable Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5

3-7 External Alarm Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6

iv 044-05251 Rev B

Nexus FT Table of Contents

3-8 Main Power Breakdown Relay Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7

3-9 Connecting a PC for Local Access . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-8

3-10 PIM testing two carriers and one WRH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-9

3-11 PIM testing one carrier over each of two WRHs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-9

4-1 PSU Cable, Switch and Lable locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-7

4-2 RCU in the WRH cabinet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-8

A-1 WRH Block Diagram - Non-Diversity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1

A-2 WRH Block Diagram - Diversity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-2

List of Tables

2-1 CU PCBA LED Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2

2-2 FON LED Indications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3

2-3 WRH Base Unit Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4

2-4 WRH Cover Unit Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4

2-5 DIA PCBA Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5

2-6 LNA Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6

2-7 FON Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6

2-8 Hardware / Software Compatibility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8

3-1 Cable Connection Priocedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5

3-2 Main Power Breakdown Relay Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7

3-3 Initial Statup Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-8

3-4 PIM Testing Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-10

4-1 Recommended Periodic Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

4-2 Alarm Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

4-3 FON Replacement Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6

4-4PSU Replacement Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-7

4-5 WRH Replacement Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-8

5-1 WRH Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1

044-05251 Rev B v

Table of Contents Nexus FT

This page intentionally left blank

vi 044-05251 Rev B

Preface

Safety

Any personnel involved in installation, operation, or service of units included in a Powerwave Distributed
Antenna System (DAS) must understand and follow the points below.

❑ Powerwave Nexus FTs are designed to receive and amplify signals from one or more

base stations a
act the other way round, that is to receive signals from one or more mobile stations,
amplify and retransmit the signals to the base stations. Powerwave Nexus FT systems
must be used exclusively for this purpose and nothing else.

❑ Units supplied from the mains must be connected to grounded outlets and in conformity

with the local presc

❑ For outdoor use, the power cord should meet at least IP65 encapsulation requirements.

Do not turn the main

❑ Power supply units supplied from the mains contain dangerous voltage that can cause

electric shoc
are to be followed when servicing such units. Only authorized service personnel are
allowed to service units while the mains are connected.

❑ When opened, the Nexus FT cover must be secured. Otherwise, the cover can be

closed by the wi

❑ When working on a Nexus FT on high ground, for instance on a mast or pole, be careful

not to drop par

❑ All RF transmitting units, including Nexus FTs, will generate radio signals and thereby

give rise to ele
who is extensively exposed close to an antenna.

❑ A lithium battery is permanently mounted on the CU and FON PCBAs. Due to the risk

of explosion, this ba
authorized service technician.

❑ NiCd batteries are mounted on the FON PCBA. These batteries contain environmental

poisonous substanc
the local prescriptions.

❑ The FON unit contains a Class 1M laser transmitter that emits 2—4 mW invisible laser

radiation at 155
direct exposure from a disconnected laser transmitter or fiber cord. For example, do not
view directly with optical instruments (magnifiers) and do not view directly with
non-attenuating optical instruments.

❑ T

he FON Unit has this label attached:

nd retransmit the signals to one or more mobile stations. And, also to

riptions.

power on until you are ready to commission the Nexus FT.

k. Disconnect the mains prior to any work in such a unit. Local regulations

nd and cause your fingers getting pinched or your head being hit.

ts or the entire Nexus FT. Falling parts can cause serious personal injury.

ctromagnetic fields that may be hazardous to the health of any person

ttery must only be removed from the board by a Powerwave

es. If replaced, the old batteries should be disposed of as stated in

0 nm during operation and is intended for a restricted location. Avoid

❑ Do not power up the FON unit if a fiber cable is not connected to the fiber output UL

❑ Never look at the end of a fiber cable. The 1310nm and 1550n

044-05251 Rev B vii

t, or if a fiber

por

visible. Always use an instrument, such as a power meter, to detect signaling.

cable is connected to the port but disconnected at the other end.

m laser light is not

Electrostatic Discharge (ESD) Nexus FT

Human Exposure to RF Radiation

Safe distances must be kept when working around antennas. The following paragraphs describe the cautions
to be aware of during the installation and maintenance of antenna systems and how to calculate safety
distances needed for RF radiation at different antenna power and frequencies.

Antennas

To be able to receive and transmit signals, a Nexus FT is connected to a donor antenna directed towards the
base station and a s
station might, however, be substituted for the donor antenna.

Installation and Maintenance of Antenna Systems

Installation and maintenance of all antenna systems must be performed with respect to the radiation exposure
limits for
transmission devices such as cables, connectors, splitters and feeders. Also have in mind the system minimum
coupling loss, typically between 25dB and 35dB, is determined by a standard with the purpose to protect base
stations from noise and other performance dropping effects.

Radiation Exposure

The World Health Organization (WHO) and International Commission on Non-Ionising Radiation Protection

ICNIRP) have

(
following radiation power for public exposure:

Frequency Radiation power

800/900 MHz 4.5W/m²
1800/1900 MHz 9.0W/m²
2100 MHz 10.0W/m²

For antennas larger than 20cm the maximum radiation power can be calculated by using the following formula:

public areas. The antenna radiation level is affected by Nexus FT output power, antenna gain, and

S= P/(4

ervice antenna directed towards the coverage area. A fiber optic cable from the base

determined recommendations for radiation exposure. ICNIRP recommends not to exceed the

S = Radiation power in W/m²
P = Output power in W
r = Distance between antenna and human in meters

πr

2

)

Electrostatic Discharge (ESD)

ESD can severly damage essential parts of the equipment if not handled carefully. Parts on
printed circuit board assemblies (PCBA) as well as other parts in the equipment are sensitive
to ESD. Never touch the PCBA or uninsulated conductor surfaces unless absolutely
necessary.

If you must handle the PCBAs or uninsulated conductor surfaces, use ESD protective

quipment or first to

e
uninsulated conductor surfaces and always store PCBAs in ESD-safe bags.

uch the chassis with your hand. Never let your clothes touch PCBAs or

viii 044-05251 Rev B

Chapter 1

Product Description

Introduction

This manual contains information and procedures for installation, operation, and maintenance of The Nexus FT
High Power Wideband Radio Head - in this manual, referred to as WRH. The manual is organized into chapters
as follows:

❑

Chapter 1- Product Description

❑

Chapter 2- Controls and Indicators

❑

Chapter 3- Installation

❑

Chapter 4- Maintenance

❑

Chapter 5- Specifications

Scope of Manual

This manual is intended for use by service technicians familiar with similar types of equipment. It contains
service information required for the equipment described 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

Figure 1-1 Powerwave WRH Radio Head

Powerwave Nexus FTs work as bi-directional on-frequency amplifiers used to extend coverage into uncovered
areas in wireless
buildings. It receives, amplifies, and transmits signals to/from a base transceiver station (BTS) to/from mobile
stations (MS) with both directions being served simultaneously. Connections to the WRH are made with N-type
or 7/16" male connectors.

mobile systems such as base station fringe areas, tunnels, convention centers, airports and

044-05251 Rev B 1-1

Overview Nexus FT

Nexus FTs are microprocessor controlled with alarm and operational status LEDs visible on the front cover.
Cooling is provided through convection heat dissipation. Operational parameters, such as gain and power
levels are set using a PC running Powerwave OM-Online software which communicates with the Nexus FTs
either locally or remotely via modem. Remote operation can be performed via PSTN or a GSM net. The
Operation and Maintenance System (OMS) provides for Network Operations Center (NOC) configuration and
alarm monitoring.

Nexus FTs can be configured in many combinations depending on the wireless system, single or double

ystem operatio

s
Nexus FTs available.

The WRH is a fiber fed system designed to provide a high output power level and comes equipped with a MCPA
in the downlink path. T
a high cover is used. The MCPA is located in the cabinet and is supplied from the existing PSU.

n, and output power. The following paragraphs provide a description of the different models of

he MCPA restricts the number of bands to one in the cabinet and one additional band if

Chassis Design

The WRH is housed in a cast aluminium waterproof chassis, class NEMA4 / IP65, approved for outdoor use but
is also suited for indoor installations. The chassis consists of a cabinet and a cover attached with hinges. The
cabinet contains the WRH circuitry. The cover comes as either a low or high version. The high cover can be
used as an empty cover or be equipped as a part of the WRH or an independent WRH unit. A WRH with a high
cover that is equipped as two independent units can, for example, be equipped for channel selective operation
in the cabinet and band selective operation in the cover.

Inside the Nexus FT, a number of amplifier PCBAs are individually shielded and located under a metal cover

hat can be opened outward. T

t

hese PCBAs are of different types depending on the supported system.

Sub Unit Overview

A number of amplifier PCBAs are individually shielded and located under a metal cover inside the Nexus FT.
This cover can be opened outward for access. These amplifier PCBAs are of different types depending on the
supported system. All of the Nexus FTs are built up with a number of sub units which are described in the
following sections.

Wideband Amplifier PCBA (WBA)

Nexus FTs can handle multiple carriers over a wide band. Each band requires one WBA for the uplink and
downlink, and one asso
along with two PAs supporting two bands or one MCPA supporting one band. Positions 1 and 3, shown in
Figure 1-6, are assigned for a WBA.

Multi-Carrier Power Amplifier

The MCPA is
direction. It req
generated. The MCPA occupies positions 2 through 4 in the cabinet and 6 through 8 in a high cover, as shown
in Figure 1-6.

used to amplify the output signal from the WBA. Each MCPA can handle one band in the downlink

uires an extra heat sink element on the outside of the cabinet or high cover to dissipate the heat

ciated PA or MCPA for the downlink. The cabinet can be equipped with up to two WBAs

PCBA (MCPA)

1-2 044-05251 Rev B

Nexus FT Overview

ALLGON INNOVATION
SWEDEN M105 R6

1

PARKING
FOR W5

W5

8

P27

W6B 10

1

P33

ALARM

P23
LNA

UP-LINK

P32

MODEM

A

U

X

1

P28
DOOR

5

9

6

1

1

16

1

1

M

-

>

S

P11

P34

8

9

15

P26

15 16

S

-

>

M

1

2

3

89

P

3

6

5

X0A

X0B

2

V2

1

16

P12 P13

1

1

1

16

16

16

P4

P5

P6

c
b
a

c
b
a

c
b
a

c
b
a

1P232

1

b
a

1

16P3

16

1

16

P14

1

V1

1

1

1

1

1

4

6

1

15

6

9

15216

1

2

4

5

8

5

P35

P21
PSU

6

10

P31
PC

P29

P24

P25

GND

7

6V6

LNA

DOWN-LINK

LED
P22

1

2

V6B

P27

P26

P23

XOA

XOB

P28

P4 P5 P6 P2 P3 P31 P21 P35 P33

P32

P11 P12 P13 V1P14 P22P29P34 V2P36

V6

GND

P25

P24

Distribution PCBA (DIA)

The DIA is the core distribution PCBA to which all other PCBAs and units connect in the cabinet with the
exception o

f the PA. Figure 1-2 shows a DIA PCBA. A shielded metal frame on the DIA provides the mounting

location for the CU, ALI and RCIs, if used.

Figure 1-2 DIA PCBA

Control Unit PCBA (CU)

Figure 1-3 shows the CU, which is the core microprocessor controller in the WRH and is connected to P2 on
the DIA. The CU contai

ns a microprocessor, main memory, flash memory for the CU software, EEPROM
memory for parameters, memory for the event log and statistics, a REFO reference oscillator, ports for local
and remote communication, a battery powered real-time clock, and a MAC identity circuit. It supervises and
controls operational parameters such as gain control and channel handling, alarms, the event log, the
password and the logon. The CU is also a control interface for OM-Online and OMS. Software for the CU can
be downloaded from OM-Online, either locally or remotely. It is located in the lower right part of the shielded DIA
frame.

Figure 1-3 CU PCBA

Low Noise Amplifier (LNA)

LNAs are used on the uplink and are located at the top of the cabinet and the high cover, if equipped. An

xample of an LNA i

e
output are fed to the LNA input connector (IN). The OUT1 and OUT2 outputs feed the WBAs in the UL direction.
The signal level at these connectors is +20dB referenced to the antenna input. The other output, OUT LOW, is
an expansion output for an additional LNA if the WRH is equipped with a unit in the cover part of the chassis.

044-05251 Rev B 1-3

s illustrated in Figure 1-4. All of the coaxial connectors are SMA-type. Signals from the DPX

Overview Nexus FT

FON

DPX

The gain to this connector is +2dB. The +7V input is used for +7V supply from the DIA PCBA and the ATT
connection is for the control signal for a controllable attenuator in the LNA.

Figure 1-4 LNA

Duplex Filter (DPX)

DPXs are located on the metal cover sheet in the upper part of the cabinet.

Fiber Optic Unit (FOU)

The FOU is a metal plate mounted on top of the cover plate in the upper part of the Nexus FT. The FON and
f

iber optic co
connectors mounted on the plate. It can also be configured with combiners, splitters, and Wave Division
Multiplexers (WDMs) to obtain a desired combination of several branches with double or single fiber.

nnectors are mounted on the FOU. Figure 1-5 illustrates an FOU with the FON and fiber optic

Figure 1-5 FOU in Nexus FT

Fiber Optic Node (FON)

The FON is the main part of the FOU. It is a bi-directional electrical/optical signal converter and a node in a fiber
network. In addit
It has also functionality for:

There are two versions of the FON; one with three SMA ports (UL, DL and RX Mon) and the other with four SMA

orts (UL, DL

p

Power Supply Unit (PSU)

The PSU supplies DC power to all of the components in the Nexus FT.

Remote Control Unit (RCU)

The RCU is an optional communication unit for remote control of Nexus FTs via PSTN or RF modems. RCU
types and details

1-4 044-05251 Rev B

ion, the FON has all the functionality included in the CU PCBA and contains battery backup.

• Electrical and optical signal supervision
ernal and external

• Int

• RS232 interface for local PC control via an O&M software (OM-Online)

• Remote control via an O&M software (OM-Online or OMS)

• Interfaces for RCU and FLI

• Battery backup with charger

, RX Mon and TX Mon). The FON also has two optical ports for DL and UL fiber connections.

are described in Chapter 4.

alarm handling

Nexus FT Overview

1234

LNA - UL

PSU

(RCU)

DPX

CUALI/RCI

WBA

DL/UL

FOU

MCPA DL

5678

PSU

(RCU)

DPX

CUALI/RCI

WBA

DL/UL

FOU

MCPA DL

FON FON

Alarm Interface PCBA (ALI) and Remote Control Interface PCBA (RCI)

The ALI handles alarms and alarm communication. It is replace with an RCI if

an RCU is used and provides an
interface between the CU and an RCU for remote communication via modem. The RCI also handles alarms
and alarm communication. Either unit is located in the lower left part of the shielded DIA frame.

Sub Unit Locations

The MCPA is located at positions 3 and 4 in the cabinet. A WRH is equipped for one band in the cabinet and,
if required, an additional band in a high cover. PCBA positions are illustrated in Figure 1-6 and a block diagram
is located in Appendix A.

Figure 1-6 Nexus FT Sub Unit Locations

Fiber Optic Distribution Networks

Fiber optic networks are setup identically to data networks. Nexus FTs are connected in a star configuration as
illustrated in Figure 1-7. In this example, a Base Station Master Unit (BMU) is fed by a BTS via an RF cable. An
Optical Converter Module (OCM) could also be used depending on the system configuration. The BMU or OCM
contain three FONs and provide continuity to the FONs in the four Nexus FTs. By using WDMs and Optical

044-05251 Rev B 1-5

Overview Nexus FT

BMU WRH

WRH

WRH

WRH

BTS

RF

Operator 1

Operator 2

OCM

OCM-POI

BTS-POI

BTS-POI

BTS-POI

BTS-POI

OCM-POI

Splitters (OSPs) in the Nexus FTs, the distribution net can be built up with a combination of star and daisy-chain
connections using double or single fiber.

Figure 1-7 Fiber Optic Star Configuration

Multi-Operator Configurations

Multi-operator systems require the use of Point of Interconnect (POI) units and OCMs as illustrated in Figure
1-8. In this simple example, two operators have two sectors each. Each sector is connected to a POI and then
to a RCM. The RCM is interconnected with an OCM via coaxial cables. The combined DL and UL signals are
converted to optical signals in the OCM and then distributed to the Nexus FTs-V.

Sector 1

Sector 2

Sector 1

Sector 2

Figure 1-8 Multi-operator System

1-6 044-05251 Rev B

Controls, Indicators and Connectors

Red

Amber

MS

DPX

ANT

TEST

DC

-30 dB

-20 dB

MS

DPX

ANT

TEST

DC

-30 dB

-20 dB

ALLGON INNOVATION
SWEDEN M105 R6

1

PARKING
FOR W5

W5

8

P27

W6B10

1

P33
ALARM

P23
LNA

UP-LINK

P32
MODEM

A

U

X

1

P28
DOOR

5

9

6

1

1

16

1

1

M

-

>

S

P11

P34

8

9

15

P26

15 16

S

->

M

1

2

3

89

P

3

6

5

X0A

X0B

2

V2

1

16

P12 P13

1

1

1

16

16

16P4

P5

P6

c
b
a

c
b
a

c
b
a

c
b
a

1P232

1

b
a

1

16P3

16

1

16

P14

1

V1

1

1

1

1

1

4

6

1

15

6

9

15216

1

2

458

5

P35

P21
PSU

6

10

P31

PC

P29

P24

P25

GND

7

6V6

LNA

DOWN-LINK

LED
P22

1

2

POWER SUPPLY UNIT

CU

ALI

or

RCI

S

V

OPER

FAULT

POWER

10V

ALARM

POWER

BOOT

FAULT

OPER

WLI / R2R

DATA

Introduction

This chapter contains descriptions of the controls, indicators and connectors for the WRH.

Front Cover Indicators

Chapter 2

Figure 2-1 External Indicators

Two LEDs, shown in Figure 2-1, are located on the front cover to provide easy identification of a fault in the
system. The amber

operation LED lights up approximately 15 seconds after the main power is switched on.
When the LED is steady, the WRH is ready for operation. The red alarm LED indicates a system error alarm
when flashing and a critical alarm when steady.

Cabinet Indicators

Figure 2-2 Cabinet Internal Indicators

044-05251 Rev B 2-1

PCBA Indicators Nexus FT

WLI DATA POWER BOOT FAULT OPER

Figure 2-2 shows the LED indicators located on the ALI or RCI, the CU PCBAs, the 115/220V main power
switch (S) in the cabinet, and the voltage indicator (V). These indicators are described in further detail in the
following sections.

PCBA Indicators

This following paragraphs describe the LED indicators on the main PCBAs inside the WRH.

CU PCBA

Figure 2-3 shows the location of the LEDs on the CU and Table 2-1 lists their indications.

Figure 2-3 CU PCBA Indicators

Table 2-1 CU PCBA LED Indicators

LED Description

WLI Wire Link Interface. A flashing green LED indicates the unit is receiving

data over the subcarr
currently not receiving any data, is currently not a control station or there
is no other node in the network

DATA Blue LED indicating data transmission in the W-net

POWER Yellow LED indicating present power and remains steady after power is

switched on

BOOT Steady r

switched on), then fla
detected. If an error is detected LED will stay on

FAULT Flashing red LED for 15 – 20 seconds after main power is switched on.

Flashes for les
(Critical)

OPER Steady green LED indicates WRH is ready for operation

WARNING: A lithium battery is permanently mounted on the CU PCBA. Due to risk of
explosion, this battery must not be removed. In case of battery malfunction, replace the
CU PCB.

ed LED when the CU boots (10 – 15 seconds after main power is

ier. A steady green LED indicates: the unit is

shing red (5 – 10 seconds), then off if no error is

s serious alarms (Error) and is on solid for fatal alarms

2-2 044-05251 Rev B

Nexus FT PCBA Connections

P117

FON PCBA

The FON is shown in Figure 2-4 and the LED indicators are listed in Table 2-2.

Figure 2-4 FON LED Indicators

Table 2-2 FON LED Indications

LED Description

FLI or

F2F

OPER Green LED. Lights up for approximately 5 seconds after the power is switched on.

FAULT Red LED. Flashes for 15 – 20 seconds after the mains is switched on. Will flash for

POWER Yellow LED. Indicates power is present

BOOT Red LED. Steady LED when the control unit boots up (10 – 15 seconds after the

WLI Green LED. Wire Link Interface. Flashing LED indicates unit is receiving data over

DATA Blue LED. Indicates data transmission in the W-net

BATT Green LED. Steady LED indicates battery pack is currently used as power source

CHARGE Yellow LED. Steady LED indicates battery charging

Green LED. Fiber
data over the sub carrier. A steady LED indicates the unit has detected an FLI sub­carrier, but is not carrying any data

The LED is dark
the unit is ready for operation

ess serious a

l

m

ains is switche

detected, the LED turns off. If an error occurs, the LED remains on

the subcarri
receiving any data, the unit is not currently a control station or there is no other node
in the network

Line Interface (FLI). Flashing LED indicates the unit is receiving

during the boot process and when it is steadily lit again, it indicates

larms and be steady for fatal alarms

d on). Next enters a flashing state for 5 – 10 seconds. If no error is

er. A steady LED indicates one of the following: The unit is not currently

PCBA Connections

The following tables list the connections from the main PCBAs to replaceable units inside the WRH. Table 2-3
lists the connections for a WRH configured for PCS both with and without diversity and Table 2-4 lists the
connections for Cellular with and without diversity.

044-05251 Rev B 2-3

PCBA Connections Nexus FT

V

V

Table 2-3 WRH Base Unit Connections

From To Cable Number Non-Diversity Diversity

WBA P2401 M FON P101 VE007 06/3 Used Used

WBA P3401 D FON P101 700-16639-001 Not Used Used

WBA P1101 M FON P102 VE007 20/2 Used Used

PSU DIA P21, P35 VE007 98/1 Used Used

M FON P108 DIA P29 VE007 66/1 Used Used

D FON P108 M FON P116 VE007 66/1 Not Used Used

M FON P111 DIA P36 VE008 05/1 Used Used

D FON P111 DIA P112 VE008 05/1 Not Used Used

Table 2-4 WRH Cover Unit Connections

From To Cable Number Non-Diversity Diversity

Cover DIA P36 M FON P112 VE008 05/1 Used Not Used

Cover DIA P36 D FON P112 VE008 05/1 Not Used Used

PSU DIA P21, P35 VE007 98/1 Used Used

DX DL C M FON P102 700-14508-401 Used Used

DX UL1 C (M) M FON P101 700-14508-401 Used Used

DX UL2 C (D) M FON P101 VE007 52/2 Not Used Used

DIA PCBA

Figure 2-5 shows and Table 2-5 lists the connections on the DIA PCBA. The DIA provides most of the internal
connection between the sub units and external ports. Connectors involved are also located on the DIA.

P11 P12 P13 V1P14 P22P29P34 V2P36

P11 P12 P13 V1P14 P22P29P34 V2P36

XOB

XOB
XOA

XOA
P26

P26
P28

P28
P23

P23
P37

P37

6B

6B

P27

P27

1

1

1

1

>M

>M

-

­S

S

15 16

15 16

P23

P23

UL LNA ATTN

UL LNA ATTN

W5

W5

P11

P11

5

5

P36

P36

2

2

1

1
X0A

X0A

89

89

3

3

1

1

P26

P26

2

2
1

1

6

6

2

2
1

1

9

9

DIV

DIV

MODEM

MODEM
P27

P27

W6B 10

W6B 10

8

8

AUX1

AUX1

1

1

P28

P28
DOOR

DOOR

P32

P32

ALLGON INNOVATION

ALLGON INNOVATION
SWEDEN M105 R6

SWEDEN M105 R6

PARKING

PARKING
FOR W5

FOR W5

X0B

X0B

15

15

1

1

9

9

5

5

P32

P32

2

2

16

16

P34

P34

8

8

1

1

P33

P33

ALARM

ALARM

1

1

V2

V2

1

1

P6

P6

c

c
b

b
a

a

1

1

P5

P5

c

c
b

b
a

a

1

1

P4

P4

c

c
b

b
a

a

P4 P5 P6 P2 P3 P31 P21 P35 P33

P4 P5 P6 P2 P3 P31 P21 P35 P33

16

16

P12 P13

P12 P13

16

16

16

16

16

16

1

1

16

16

1

1

b

b
a

1P232

1P232

c

c
b

b
a

a

a

1

1

16P3

16P3

Figure 2-5 DIA PCBA Connectors and Testpoints

The External Alarm Port P33 is used for external alarm sensors and alarm equipment. The four alarm inputs
are low-level input

s with common ground (AIC). Use an insulated switch or relay to initiate alarms (open
switches in normal operating mode, closed switches cause alarm). The alarm switch connection can be
toggled between active open and active closed. The alarm input voltage ratings, related to ground (AIC), are:
Vinmax= 5.5V, Vinmin= –0.5V.

The four alarm inputs are connected to the following pins:

Pin 14 AI1 External alarm input 1 - EAL1

Pin 15 AI2 External alarm input 2 - EAL2

Pin 7 AI3 External alarm input 3 - EAL3

Pin 8 AI4 External alarm input 4 - EAL4

2-4 044-05251 Rev B

1

1

16

V1

16

V1

P14

P14

LED

LED
P22

P22

4

4

2

2

1

1

1

1

>S

>S

P25

P25

-

-

6

6

M

M

15

15

9

9

16

16

15

15

1

1

P25

P25

P29

P29

6

6

P31

P31
PC

PC

5

5

10

10

P21

P21
PSU

PSU

1

1

6

6

5

5

1

1

P35

P35

4

4

8

8

P24

P24

2

2

P24

P24

1

1

1

1

UL LNA ATTN

UL LNA ATTN

V6

V6

6V6

6V6

2

2

P38

P38

1

1

DIV

DIV

P38

P38

7

7

GND

GND

GND

GND

Nexus FT PCBA Connections

Pin 6 AIC Ground.

Two alarm outputs are 1 pole closing and 1 pole opening relay outputs insolated from each other. Maximum
ratings, related
follows:

Pin 9 and 1 AO1 and AO8 Closed when operating, otherwise open.

Pin 10 and 2 AO6 and AO7 Open when operating, otherwise closed.

Pin 11 and 3 AO2 and AO5 Closed at alarm state, otherwise open.

Pin 12 and 4 AO3 and AO4 Open at alarm state, otherwise closed.

to ground or any other alarm terminal, are 50 VAC / 60 VDC. The alarm outputs are defined as

Table 2-5 DIA PCBA Connections

Port Connected to

P2 CU PCBA

P3, 5, 6 Not Used

P4 ALI or RCI PCBA

P11 - 14 Channel PCBA positions 1 through 4

P21 PSU, connector 1

P22 LED PCBA in cover

P23 LNA/UL

P24 LNA/DL

P25 Expansion output port to cover circuitry. Only in cabinets

P26 Expansion input port to cover circuitry. Used in equipped high covers

P27 Auxiliary Port (8-pin male) - Pins 2 and 3 must always be interconnected to

p

rovide the CU an

connected, pins 2 and 3 must be interconnected with a jumper

P28 Door switch port - Normally, alarm input AI4 is used for door opening alarm

AL4 which is

E
are thus available also in the P28 connector, to which the door switch is
connected. The EAL4 door switch alarm is activated 10 – 30 seconds after
the cover has been opened

P29 Power to FON

P31 RS-232 PC Port (9-pin D-sub female) - Used for local PC communication

P32 RS-232 Modem port (9-pin D-sub male)

P33 External Alarm Port (15-pin D-sub female) - Used for external alarm sensors

a

nd alarm equip

outputs

P34 Not used

P35 PSU, connector 2

P36 IP or R2R connection between CU and FON

P37 LNA Diversity DL

P38 LNA Diversity UL

d ALI/RCI PCBAs with voltage. If there is no cable

arranged using an optional door switch. Signal AI4 and AIC

ment. Four alarm inputs, EAL1 – EAL4, and two alarm

044-05251 Rev B 2-5

PCBA Connections Nexus FT

P117

LNA

Figure 2-6 shows the front of the LNA and Table 2-6 lists the connections.

Figure 2-6 LNA

Table 2-6 LNA Connections

LNA Port Connected to

OUT LOW IN on the LNA/UL in the cover, if equipped

IN LO on the service DPX duplex filter

ATT +7V P23 on the DIA PCBA

OUT1 P2101 on the WBA PCBA

OUT2 Diversity LNA connected to P3101 on WBA PCBA

FON

Figure 2-7 shows the locations of the connectors on the FON and Table 2-7 lists the port numbers, connector
types, and port usage.

Figure 2-7 FON Connector Locations

Table 2-7 FON Connectors

Port Description

P101 SMA, electrical RF input port (to the optical TX port)

P102 SMA, electrical RF output port (from the optical RX port)

P103 SMA, electrical RF output port (15dB below the P102 port)

RX DIN/APC, optical input port (to the P102 and P103 RF ports)

TX DIN/APC, optical output port (from the P101 RF port)

P104 Used only for development and debugging

P105 4-pin male, door LED indicators. Used for the yellow and red LED indicators located

on t

he front cabinet door

06 9-pin D-sub female, RS-232 used for local PC communication

P1

P108/116 6-pin male, parallel connected power ports for the FON

P109 7-pin male, used for external alarm sensors

2-6 044-05251 Rev B

Nexus FT PCBA Connections

MS

DPX

ANT

TEST

DC

-30 dB

-20 dB

POWER SUPPLY UNIT

ALLGON INNOVATION
SWEDEN M 105 R6

1

PARKING
FOR W5

W5

8

P27

W6B 10

1

P33

ALARM

P23
LNA

UP-LINK

P32

MODEM

A

U

X

1

P28
DOOR

5

9

6

1

1

16

1

1

M

-

>

S

P11

P34

8

9

15

P26

15 16

S

-

>

M

1

2

3

89

P

3

6

5

X0A

X0B

2

V2

1

16

P12 P13

1

1

1

16

16

16

P4

P5

P6

c
b
a

c
b
a

c
b
a

c
b
a

1P232

1

b
a

1

16P3

16

1

16

P14

1

V1

1

1

1

1

1

4

6

1

15

6

9

15

2

16

1

2

4

5

8

5

P35

P21
PSU

6

10

P31
PC

P29

P24

P25

GND

7

6V6

LNA

DOWN-LINK

LED
P22

1

2

P21
P35

V1V2

AC

Power

MS

DPX

ANT

TEST

DC

-30 dB

-20 dB

MS

DPX

ANT

TEST

DC

-30 dB

-20 dB

POWER SUPPLY UNITPOWER SUPPLY UNIT

ALLGON INNOVATION
SWEDEN M 105 R6

1

PARKING
FOR W5

W5

8

P27

W6B 10

1

P33

ALARM

P23
LNA

UP-LINK

P32

MODEM

A

U

X

1

P28
DOOR

5

9

6

1

1

16

1

1

M

-

>

S

P11

P34

8

9

15

P26

15 16

S

-

>

M

1

2

3

89

P

3

6

5

X0A

X0B

2

V2

1

16

P12 P13

1

1

1

16

16

16

P4

P5

P6

c
b
a

c
b
a

c
b
a

c
b
a

1P232

1

b
a

1

16P3

16

1

16

P14

1

V1

1

1

1

1

1

4

6

1

15

6

9

15

2

16

1

2

4

5

8

5

P35

P21
PSU

6

10

P31
PC

P29

P24

P25

GND

7

6V6

LNA

DOWN-LINK

LED
P22

1

2

ALLGON INNOVATION
SWEDEN M 105 R6

1

PARKING
FOR W5

W5

8

P27

W6B 10

1

P33

ALARM

P23
LNA

UP-LINK

P32

MODEM

A

U

X

1

P28
DOOR

5

9

6

1

1

16

1

1

M

-

>

S

P11

P34

8

9

15

P26

15 16

S

-

>

M

1

2

3

89

P

3

6

5

X0A

X0B

2

V2

1

16

P12 P13

1

1

1

16

16

16

P4

P5

P6

c
b
a

c
b
a

c
b
a

c
b
a

1P232

1

b
a

1

16P3

16

1

16

P14

1

V1

1

1

1

1

1

4

6

1

15

6

9

15

2

16

1

2

4

5

8

5

P35

P21
PSU

6

10

P31
PC

P29

P24

P25

GND

7

6V6

LNA

DOWN-LINK

LED
P22

1

2

P21
P35

V1V2

AC

Power

Table 2-7 FON Connectors (Continued)

Port Description

P110 W-link jumper, used to terminate units in a W-link. It has to be set in the parking

state for all

units except for the first and last units in a W-link. The Parking state (P)
has the jumper between the center and bottom pins. The opposite state, with the
jumper between the tip and center pins, terminates(T) the W-link

P111/112 5-pin male, WLI ports used for interconnecting nodes in WLI-nets (IP or R2R

networks).

They are identical and connected in parallel. One of the connectors is
intended to be used from the previous node and the other connector to the next
node in the network. Either can be used for the first and the last unit in the net chain

P113 2-pin male, used for the on-PCBA backup batteries

P114 Backup power output jumper, sets the backup power output state. The OFF state

as jumper between th

h

e center and left pins. This jumper has to be in the OFF state

when used in an OCM. Otherwise, it shall be in the ON state

P115 3-pin male, intended for future use

P117 SMA, electrical RF output port (15dB below the P101 port)

P130 34-pin, 2-line male, RCU port used for connecting an RCU. The connector contains

both the modem co

nnection and RCU power supply

PSU

The PSU is located in the bottom middle of the cabinet or in an equipped high cover. The PSU has all the
voltages required for the WRH. It has capacity for the radio circuitry, fiber optics, and modem. Multi-band
WRHs always require a second PSU. There are two PSU types with different input voltages:

1. 115/230V 50/60Hz, 300W input max.

2. 21- 60V DC, 300W input max.

The PSU is connected to the DIA at P21 and P35, and voltage is tested at V1 (test point for P35) and V2 (test
point for P21).

igure 2-8 PSU Location

F

044-05251 Rev B 2-7

Software and Hardware Compatibility Nexus FT

Software and Hardware Compatibility

There are different versions of CU PCBA software which can be combined with PCBAs of various revisions.
These have unique part numbers and revision information. Table 2-8 lists the software currently available in
combination with CU PCBA revisions.

Table 2-8 Hardware / Software Compatibility

CU PCBA part number CU Software part number

500-13817-001 (previously K103/3) D631-18072-001

D631-18072-003

This information is accurate as of 06/31/2007. As new versions of hardware and software are released without
prior notice, contact your Powerwave sales representative for information on the latest revision.

For detailed information, refer to the release notes for the CU software to be downloaded (normally found in
the readme.txt file prov

ided with the program files).

2-8 044-05251 Rev B

Chapter 3

Installation

Introduction

This chapter contains unpacking, inspection and installation instructions for installing and powering up the
WRH.

Site Survey

Powerwave recommends that a site survey be performed prior to equipment ordering or installation.
Performing a detailed site survey reduces or eliminates installation and turn-up delays. Pay particular
attention to power plant capacity, cooling needs, floor space, and RF/DC cabling/breaker requirements.
Cabinet dimensions and weights are listed in Chapter 5.

Unpacking and Inspection

This equipment has been operated, tested, and calibrated at the factory. Carefully open containers to remove
equipment. Retain all packing material that can be reassembled in the event unit must be returned to the
factory. Perform the following steps:

❑ V

isually inspect equipment for damage that may have occurred during shipment. If possible, in the

presence of

❑ Check for evidence of water damage, bent or warped chassis, loose screws or nuts, or extraneous

packing material in connectors.

If equipment is damaged, file a claim with the carrier once the extent of any damage is assessed.

If equipment must be returned to factory, please contact factory for a Return Material Authorization (RMA),

e Chapter 4

se

.

the delivery person.

WRH Location

The WRH is designed with a weather proof outdoor cabinet that can be mounted without any kind of shelter
from rain, snow or hail. The same unit can be installed indoors. A preferable site for the WRH is a location free
of obstructions, easily accessible and allows for proper air-flow and ventilation.

If a WRH is installed outdoors and can be exposed to direct sunshine, it is essential that air circulates around
th

e WRH with no obstacles

to shade the WRH from direct sunshine.

Never open a WRH when rain, snow, hail, high humidity or high winds are present unless some kind of
te

mporary shelte

r can be erected.

. The operating temperature must not exceed 131°F (55°C). A shelter can be used

Mounting

The WRH is easy to mount using the provided mounting bracket, which has 9/16-inch (14mm) holes for 3/8­inch (10mm) or 1/2-inch (12mm) fixing screws. Clamps with C-C measurements of 3.5-inch (90mm), 5.3-inch
(135mm), 5.7-inch (144mm), 8.1-inch (205mm), 9.8-inch (250mm), and 11.8-inch (300mm) can be used as
well. The vertical C-C measurement for these is 16.2-inch (411mm). There is a 9/16-inch (14mm) single hole
in the middle of the mounting bracket, marked ‘A’ in the figure, which is intended for a locking screw to lock the
bracket into place.

044-05251 Rev B 3-1

Mounting Nexus FT

90
135
144
205
250
300

Ø14

A

411

Figure 3-1 Mounting Bracket

Normally, the WRH is mounted on a wall, pole, or mast. Figure 3-2 illustrates the installation of the mounting
bracket on a wall

using four fixing screws and a locking screw.

Figure 3-2 Mounting Bracket Installation on Wall

3-2 044-05251 Rev B

Nexus FT Mounting

Figure 3-3 illustrates the installation of the mounting bracket on a pole using two 5.7-inch (144mm) U-shaped
clamps and a locking screw.

Figure 3-3 Attaching the Bracket to a Pole

Figure 3-4 illustrates a mast installation using two 11.8-inch (300mm) bar-shaped clamps and no locking

ew.

scr

Figure 3-4 Atta

ching the Bracket to a Mast

044-05251 Rev B 3-3

Connections Nexus FT

After installing the mounting bracket, hang the WRH on the upper supports, as illustrated in Figure 3-5.
Tighten the upper and lower mounting screws to secure it into place using the 6mm hex socket wrench.
Locking cylinders, used to prevent unauthorized removal of the repeater, can be inserted and locked with a
key after the lower screws have been tightened. Make sure the donor antenna, directed towards the BTS
antenna, and the service antenna, directed towards the area to be covered by the WRH, are mounted and
installed properly.

Figure 3-5 Attaching the WRH to the Bracket

Connections

This section describes general examples of how to connect the input and output ports on the WRH.

Main Power and Grounding

Local regulations need to be followed for the main power connection. WRHs are approved in accordance with
EN and UL/cUL regulations. This is, however, only valid if a classified power cord is used. For the Nexus FTto
meet these regulati

❑ EN – H 05 W5 - F HMR
❑ UL – AWM Style 2587
❑ CSA– AWM 1 A/B 11 A/B

For outdoor use, the power cord should meet at least IP65 encapsulation requirements. Do not turn the main
power on until you ar

WARNING: For WRHs supplied from the main power source, the main outlet must be
grounded.

Fiber Optic and RF Connections

Fiber optic and RF cable connections should be verified both internally and externally before powering up the
equipment. This section illustrates the general internal connections of the WRH. Verify these connections with
the as-built drawings and documents for your specific system configuration. Table 3-1 lists the steps to add
the external connections to the WRH.

ons you must select one of the following classified and approved cord types:

e ready to commission the WRH.

3-4 044-05251 Rev B

Nexus FT Connections

1550

1310

Power connection

Fiber Optic
Connection

Service Antenna
Connection

Ground Points

Table 3-1 Cable Connection Procedure

Step Action

1 Connect service antenna coaxial cable to left-outside DIN connection on cabinet

2 Connect fiber optic cable from OCM or BMU to fiber optic cable demark on FOU

3 Connect station ground to appropriate ground point in cabinet

4 Mount main power plug to main power cord and insert into PSU

WRH

Figure 3-6 illustrates the cables and connections for the WRH.

044-05251 Rev B 3-5

Figure 3-6 WRH Cable Connections

Optional Connections Nexus FT

MS

DPX

ANT

TEST

DC

-30 dB

-20 dB

MS

DPX

ANT

TEST

DC

-30 dB

-20 dB

POWER SUPPLY UNIT

ALLGON INNOVATION
SWEDEN M105 R6

1

PARKING
FOR W5

W5

8

P27

W6B 10

1

P33

ALARM

P23
LNA

UP-LINK

P32

MODEM

A

U

X

1

P28
DOOR

5

9

6

1

1

16

1

1

M

-

>

S

P11

P34

8

9

15

P26

15 16

S

-

>

M

1

2

3

89

P

3

6

5

X0A

X0B

2

V2

1

16

P12 P13

1

1

1

16

16

16

P4

P5

P6

c
b
a

c
b
a

c
b
a

c
b
a

1P232

1

b
a

1

16P3

16

1

16

P14

1

V1

1

1

1

1

1

4

6

1

15

6

9

15216

1

2

4

5

8

5

P35

P21
PSU

6

10

P31
PC

P29

P24

P25

GND

7

6V6

LNA

DOWN-LINK

LED
P22

1

2

P28 P33

Optional Connections

Alarms

Alarm signals from external sensors are received by an ALI or RCI which forwards them to the CU. The RCI is
used if the WRH has an RCU, otherwise the ALI is used. The software on the CU can activate acoustic or
visual alarms or direct the alarm to the P33 alarm port for forwarding via an RCU through OM-Online. Alarms
can also be handled by the FON. Alarms are configured through OM-Online.

External Alarm

Burglary, fire or other external alarms can be handled by the WRH. External alarm sensors and alarm signals
are connected to the P33 alarm port located to the left in the cabinet, as illustrated in Figure 3-7. The P33
alarm port is described in Chapter 2. The cable for this installation is taken through a strain relief bushing at
the bottom of the WRH cabinet.

Door Open Alarm

A door open alarm can be configured and installed in the WRH. This is arranged with a door switch connected
to pin 8 (AI4) on P28, as described in chapter 2. The location of P28 is shown in Figure 3-7.

Figure 3-7 External Alarm Connection

Main Power Breakdown Relay

To be able to distinguish PSU faults from power failures, a main power breakdown relay can be used. This
relay is not included in the WRH. It has to be mounted outside the WRH cabinet. The relay intended for this
purpose must fulfil the following specifications:

Closing time: Max. 30 milliseconds

Insulation coil/contact: Min. 4KV

A main power connected relay must also be in compliance with valid local regulations. To install a main power

reakdown relay co

b

nnection, follow the steps listed in Table 3-2.

3-6 044-05251 Rev B

Nexus FT Commissioning

MS

DPX

ANT

TEST

DC

-30 dB

-20 dB

POWER SUPPLY UNIT

ALLGON INNOVATION
SWEDEN M105 R6

1

PARKING
FOR W5

W5

8

P27

W6B 10

1

P33

ALARM

P23
LNA

UP-LINK

P32

MODEM

A

U

X

1

P28
DOOR

5

9

6

1

1

16

1

1

M

-

>

S

P11

P34

8

9

15

P26

15 16

S

-

>

M

1

2

3

89

P

3

6

5

X0A

X0B

2

V2

1

16

P12 P13

1

1

1

16

16

16

P4

P5

P6

c
b
a

c
b
a

c
b
a

c
b
a

1P232

1

b
a

1

16P3

16

1

16

P14

1

V1

1

1

1

1

1

4

6

1

15

6

9

15

2

16

1

2

4

5

8

5

P35

P21
PSU

6

10

P31
PC

P29

P24

P25

GND

7

6V6

LNA

DOWN-LINK

LED
P22

1

2

P33:AICP33:AI1

Table 3-2 Main Power Breakdown Relay Connection

Step Action

1 Connect a currentless closed relay contact to pin AI1 and AIC on P33 alarm connector, as shown in

Figure 3-8. Alarm is initiated when pins AI1 and AIC are shorted

2 Connect relay coil. Coil must be supplied from same fuse as WRH

3 After commissioning, select Mains Breakdown in alarm configuration window in OM-Online. For

details on setting alarm configuration see OM-Online User Manual.

Figure 3-8 Main Power Breakdown Relay Connection

21-60 Volt DC PSU Installation

See the Field Replaceable Units, PSU section in Chapter 4 for details on replacing a 115/230 VAC PSU with
a 21 to 60 Volt DC PSU.

Commissioning

Before proceeding, carefully read the Safety section and check all connections made during the installation.
To fulfill the IP65 weather protective requirements, ensure cable strain relief bushings are properly tightened.
Also, ensure gaskets at cable inlets and on the cabinet are properly fitted and not damaged.

044-05251 Rev B 3-7

Commissioning Nexus FT

MS

DPX

ANT

TEST

DC

-30 dB

-20 dB

POWER SUPPLY UNIT

ALLGON INNOVATION
SWEDEN M105 R6

1

PARKING
FOR W5

W5

8

P27

W6B 10

1

P33

ALARM

P23
LNA

UP-LINK

P32

MODEM

A

U

X

1

P28
DOOR

5

9

6

1

1

16

1

1

M

-

>

S

P11

P34

8

9

15

P26

15 16

S

-

>

M

1

2

3

89

P

3

6

5

X0A

X0B

2

V2

1

16

P12 P1 3

1

1

1

16

16

16P4

P5

P6

c
b
a

c
b
a

c
b
a

c
b
a

1P232

1

b
a

1

16P3

16

1

16

P14

1

V1

1

1

1

1

1

4

6

1

15

6

9

15

2

16

1

2

4

5

8

5

P35

P21
PSU

6

10

P31

PC

P29

P24

P25

GND

7

6V6

LNA

DOWN-LINK

LED
P22

1

2

P31

A WRH can be configured locally with OM-Online by connecting a standard serial cable from the COM port on
the PC to the P31 PC port (RS-232) located to the right in the cabinet as shown in Figure 3-9. The P31 PC
port is described in Chapter 2. Details on using OM-Online are described in the OM-Online User Manual.

Initial Startup

To complete the inital start-up of the WRH, follow the steps listed in Table 3-3.

Step Action

1 Turn main power on

Figure 3-9 Connecting a PC for Local Access

Table 3-3 Initial Statup Procedure

2 Check Yellow LED on power supply unit. Steadily lit = functioning correctly

3 Check the four CU PCBA LEDs. Refer to CU PCBA section in Chapter 2 for correct power up

ications

ind

4 Check the thre

section in Chapter 2 for

e ALI PCBA LEDs or corresponding LEDs on RCI PCBA. Refer to ALI or RCI PCBA

correct power up indications

NOTE When optimizing WRHs, offset the UL gain 20dB less than the DL gain as a starting point.

Always monitor the UL pass bands for noise levels and/or IMDs when optimizing and
commissioning

.

For CDMA carriers, ensure that the UL pass band is well above the noise floor.

3-8 044-05251 Rev B

Nexus FT Commissioning

(

Passive Intermodulation (PIM) Testing

PIM is the non-linear effect of passive RF components in a desired RF transmission band. As higher per­carrier transmit power levels are applied to duplexed passive RF networks, PIM becomes an increasingly
significant factor in potential receiver desensitization. A PIM tester may be used on the RF network prior to
turn-on and commissioning of the unit, but if a PIM tester is not available, the following may be used:

The following equipment is required to test for PIM:

❑ Anritsu Site eMaster or equivilent RF Spectrum Analyzer
❑ Agilent ESG4432B or equivilent Multi-Signal Generator (or commissioned BTS)
❑ Guarateed/calibrated PIM load capable of handling 20W composite power
❑ Low-PIM RF cable adaptors such as N-N female, Din male to N femaile, DIN-DIN, SMA-SMA

female, and N male to SMA female

❑ Installed and operational WRH unit
❑ Installed passive RF network under test
❑ Torque wrenches for DIN and N connectors

Two different types of setup are available, depeding on equipment availability and testing methods.
Figure 3-10 shows PIM testing with two carriers over one WRH, and Figure 3-11 shows PIM testing with one
carrier over each of two WRHs.

E4432B

SIG Gen

or BTS)

E4432B
SIG Gen
(or BTS)

Σ

OCM

E4402B

Spec. An.

WRH-V

Load /

DAS

Figure 3-10 PIM testing two carriers and one WRH

E4432B

Sig Gen /

BTS 1

E4432B

Sig Gen /

BTS 2

OCM

OCM

WRH-V

WRH-V

Under Test

E4402B

Spec. An.

Hybrid

Load /

DAS

Figure 3-11 PIM testing one carrier over each of two WRHs

The following PIM test uses the receive sensitivity and gain of the WRH under test to verify that the receive

ath is free of PIM n

p

oise. For PIM to be a problem at a particular site, TX signals must exist such that their

products fall into the RX band using the formulae:

3rd order product = (2 * f1) - f

2

and

3rd order product = (2 * f2) - f

1

044-05251 Rev B 3-9

Commissioning Nexus FT

Where f1 and f2 are two TX signals entering a WRH. The specification for the maximum allowed PIM is -115
dBm per 100 kHz resolution bandwidth at rated output power. To test for PIM follow the steps listed in
Table 3-4.

Table 3-4 PIM Testing Procedure

Step Action

1 If BTS signals are present, continue with step 2. Otherwise, connect two signal generators to OCM

and set frequencies such that products are in relevent receive band (see equations above)

2 Set WRH UL gain to 60 dB and DL gain such that desired per carrier power is presented at output

port

3 Set Spectrum Analyzer to 100 kHz resolution bandwidth and view RX band at 3rd order product

frequency calculated in step 1

4 Loosen fastening screw in each corner on front cover of WRH under test, and open cover

5 Verify the noise floor specification for the Spectrum Analyzer. If the noise floor is higher than or equal

to -85 dBm/100 kHz, locate FON, disconnect UL cable from port P101 and connect
SpectrumAnalyzer to the cable using an SMA female - female connector (noise limit becomes -115
dBm + 60 dB = -55 dBm). Continue with step 7.

6 If noise floor is lower than -85 dBm/100 kHz, locate the FON card and connect the Spectrum Analyzer

to P117 (noise limit becomes -115 dBm + 60 dB - 30 dB = -85 dBm). If the FON only has three RF
ports on the left side, port P117 will not be available, so follow instructions listed in step 5.

7 Enable WRH TX signal. For details on using OM-Online, see OM-Online user manual

8 Using Spectrum Analyzer, measure noise level. If no noise exists above calculated limit in step 5

(-55 dBm) or step 6 (-85 dBm) above, as appropriate, then test is passed and no other action is
necessary

9 If a higher level of noise exists, disable the WRH TX signal and disconnect cable to DAS at bottom-

left outside corner

10 Connect low PIM load onto WRH Service antenna connector at bottom-left outside corner. Tighten

connectors securely

11 Remeasure noise level. If no noise exists above calculated limit in step 5 (-55 dBm) or step 6 (-85

dBm) as appropriate, then DAS has a PIM issue. Tighen all connections in DAS with torque
wrenches, replace any cripmed or severely bent cables, and retest. Repeat until all issues are solved

12 Otherwise, if noise is higher than limit, WRH is defective and must be replaced. See Chapter 4 for

Replacement procedures

3-10 044-05251 Rev B

Chapter 4

Maintenance

Introduction

This chapter contains periodic maintenance and performance test procedures for the WRH.

Periodic Maintenance

Periodic maintenance requirements are listed in Table 4-1, as well as the intervals at which the tasks should
be performed.

Table 4-1 Recommended Periodic Maintenance

Task Interval Action

Inspection of cables
and connectors

Clean equipment Clean as required depending on operating environment

12 months Inspect power, RF and Fiber cables for signs of damage or wear

(frayed insulation, cracks, punctures, etc.) Check connections to be
sure they are tight

Optional Perform cable sweeps

Troubleshooting

The sections that follow contain a list of problems that could occur and a few suggested actions that might
correct each problem. If the suggested corrective action does not eliminate the problem, please contact your
Powerwave field representative or help line for further instruction.

Clearing Alarm Faults

Table 4-2 lists the alarms that can be generated in the WRH. Critical, Error and Warning alarms are sent
automatically from a WRH to OM-Online, stored and then viewed in the Alarm window.

Table 4-2 Alarm Troubleshooting

ID Alarm Text Alarm Unit Alarm Description

1 Power PSU Critical PSU1 in the cabinet does not work properly. A sum signal from

the PSU1 indicates
no mains breakdown relay is used, then the alarm will also be sent
at mains breakdown

Ceasing PSU1 in the cabinet works properly again. Ceasing is sent if the

PSU1 works at sta
PSU1 alarm logged in the Events log. The WRH will restart when
the power is back and this alarm will be sent

that at least one voltage output has dropped. If

rt-up, and there is a corresponding critical

PSU Critical PSU2 in the cover does not work properly. A sum signal from the

PSU2 indicates that at le
mains breakdown relay is used, then the alarm will also be sent at
mains breakdown

044-05251 Rev B 4-1

ast one voltage output has dropped. If no

Troubleshooting Nexus FT

Table 4-2 Alarm Troubleshooting (Continued)

ID Alarm Text Alarm Unit Alarm Description

Ceasing PSU2 in the cover works properly again. Ceasing is sent if the

PSU2 works at start-up, and there is a corresponding critical
PSU2 alarm logged in the Events Log. The WRH will restart when
the power is back and this alarm will be sent

Power FON Error The FON 10 Volt charger voltage is below limit. Suggested

remedy: Replac

Ceasing The cause of the alarm has ceased

2 WRH restart CU None Power on start, or user ordered reboot. Logged to indicate a

normal power up

Warning Software error restart, 1st – 7th time. Restart 1st to 7th time during

a 14 day period. The co

from power up

Error Software error restart 8th – 10th time. Restart 8th to 10th time

uring the 14 day

d
blocked and not used anymore until a user ordered reset is
performed, or power is switched off/on

e the FON

, or a restart ordered by the operator

unter is reset every 14th day, counted

period. At the 11th time, the SW bank will be

3 Mains

breakdown

4 Alarm reset CU None Alarm reset by the user. All alarms are reset. The cause of the

5 Local bus

error

6 Main bkd w

backup

7 Err in AD-

converter

8 New unit

detected

9 Inst. unit lost Error Compared to the last power on, the CU lacks at least one

External Crit

WBA #,
MCPA#

External Error Used to

ical The mains power is gone. Used with an external relay indicating

mains breakdown. The external relay should be connected to
External Alarm 1 and the WRH configured to indicate this alarm. If
no relay is used, a mains breakdown will be reported as a PSU
fault

Ceasing The mains power is back. Sent if there is a corresponding critical

mains breakdown alarm logged in the Events Log. The WRH will
restart when the power is back

larm will be

a

Error Error when com

with the WBA, or MCPA PCBA, which is taken out of service

powered by external battery backup unit. Suggested remedy:
Check the mains power

Ceasing The cause of the alarm has ceased

Warning The ana

reliable values

None Compared

one additional hardware unit

hardware unit

re-evaluated and reported, if still active

municating on the bus. The CU has no contact

indicate that the mains is no longer available. WRH is

log-to-digital converter on the CU PCBA does not give

to the last power on, the CU has recognized at least

10 EEPROM

r

erro

11 Log memory

lt

fau

CU Error EEP read or write fail

EEPROM on the CU PCBA. User parameters are stored in the
EEPROM

Error Log memory

is faulty. The WRH will not work. Not available in all CU software
versions

fault. Indicates that the log memory on the CU PCBA

. Data cannot be written or read from the

4-2 044-05251 Rev B

Nexus FT Troubleshooting

Table 4-2 Alarm Troubleshooting (Continued)

ID Alarm Text Alarm Unit Alarm Description

12 High temp CU Warning The CU PCBA temperature is higher than 90°C

Ceasing The CU PCBA temperature has fallen below 90°C

13 REFO error Error Significant REFO drift or error detected by CU

14 Ext REFO

error

15 CU battery

fault

16 SW load error CU Error Software load error. An error has occurred during a software load

17 Log cleared CU None Log memory has been cleared. The check sum in the Events Log

18 RTC restarted CU None The time is changed by the operator (logged to keep track of

19 RTC error Error RTC does not operate. The CU has detected an error in the RTC

CU Warning CU RAM b

Warning Suggested remedy: Check the reference source and the cables

attery fault. The battery for the RAM on the CU PCBA
has a voltage outside the normal 2.7 to 3.5 Volt. An alarm may be
initiated at start-up if the WRH has been stored out of power for a
long time. Suggested remedy: Ensure jumper P3 on the CU PCBA
is mounted to charge the battery

Ceasing The cause of the alarm has ceased

process. The flash memory does not contain a proper software.
Suggested remedy: Check the CU software using the OM-Online
SW Manager. Do NOT restart the WRH

memory is faulty. The
battery backup or low voltage to the RAM

anges made to the RT

ch

Warning Time reset to 1994-01-01. The RTC was unable to keep track of

the time and did a rese
the CU PCBA is mounted to charge the battery

ration which mak

ope
Replace the CU PCBA

log is cleared. Can be caused of a bad RAM

C)

t. Suggested remedy: Ensure jumper P3 on

es the time unreliable. Suggested remedy:

20 Door open

alarm

21 External

alarm 1

22 External

alarm 2

23 External

alarm 3

24 External

alarm 4

External Config The door has been open 30 seconds without disabling the alarm

Ceasing The door has been closed 30 seconds, or the alarm is disabled

External Confi

External Confi

External Confi

External Confi

g External alarm input EA1 active more than 1 second

Ceasing External alarm input EA1 no longer active

g External alarm input EA2 active more than 1 second

Ceasing External alarm input EA2 no longer active

g External alarm input EA3 active more than 1 second

Ceasing External alarm input EA3 no longer active

g External alarm input EA4 active more than 1 second

Ceasing External alarm input EA4 no longer active

044-05251 Rev B 4-3

Troubleshooting Nexus FT

Table 4-2 Alarm Troubleshooting (Continued)

ID Alarm Text Alarm Unit Alarm Description

30 No modem

found

33 No

connection

34 Login failed None Invalid WRH password

35 Remote

connection

36 Modem init

failed

37 Remote

eout

tim

38 PIN code

failed

Remote ctrl None No modem found, that is no answer is returned on a poll string to

the modem

Remote c

Remote c

Remote ctrl None Initiation string to modem not OK. The initiation string sent to the

Remote ctrl Wa

Remote ctrl Wa

trl None No connection at callback. The WRH has tried to call as many

times as stated in the alarm call settings. No connection was
established.

Warning No connection at alarm call. The WRH has tried to call as many

times as stated in the alarm call settings. No connection was
established. This alarm does not generate a new attempt to report
alarm by alarm call.

trl None Modem connection to OM-Online opened. Not logged on CU2.

Login Registry gives the same function and more information

about CU2

modem is not OK. The string may contain commands not
recognized by the modem. An alarm might be sent anyway.
Suggested remedy: Check the modem using the OM-Online or
OMS modem debugger

rning The time limit of 20 minutes is exceeded without extending the

timer. The modem connection is terminated by the WRH

rning The PIN code sent to MS is incorrect. To unlock the MS/SIM card,

the PUK code will probably be needed

39 No phone

detected

40 Battery fault RCU, FON

42 Antenna

isolation

48 Battery

backup fault

Remote ctrl Wa

charger

WBA #,
Channel #
UL/DL

External Error If

Ceasing The cause of the alarm has ceased

rning When using a PC-card together with the MS, the alarm indicates

contact with the PC-card, but MS is not present or turned off.
Note: A Nokia MS does not power-up after power failure.
Suggested remedy: Ensure the cellular phone is connected

Ceasing The cause of the alarm has ceased

Error The b

Ceasing The cause of the alarm has ceased

Warning Low antenna isolation. The antenna isolation is lower than the

,

Error Low antenna isolation at lowest gain. The gain has been reduced

Ceasing Normal operation again, that is no oscillation can be detected

ackup battery on the RCU or the FON PCBA does not work

properly. Suggested remedy: Check cables or replace battery

gain set. Gain is reduced by 10dB – 13dB below the oscillation
point. Suggested remedy: Decrease gain or increase antenna
isolation

as much as poss
is turned off. Suggested remedy: Decrease gain or increase
antenna isolation

13dB above the g

a battery backup unit alarm is connected to external alarm 2,
then the operator can configure the WRH to display this alarm
when the battery backup unit indicates alarm

ible but the oscillation still remains. The amplifier

ain set

4-4 044-05251 Rev B

Nexus FT Troubleshooting

Table 4-2 Alarm Troubleshooting (Continued)

ID Alarm Text Alarm Unit Alarm Description

Ceasing The cause of the alarm has ceased

50 Fiberoptical

error

70 Bad table

alarm

71 Table not

found

72 Table

database
error

80 Antenna

SWR alarm

90 FON power

alarm

91 FON

TxStable
alarm

FOT fiber
optics

CU Error Requested table contains incorrect information (SW error)

CU Error Requested tabl

CU Error Tabl

Donor
antenna
service
antenna

FON RF Error A DC voltage on

FON RF Error Laser trans

Configur
able

Ceasing The cause of the alarm has ceased

Error Too low antenna return loss, caused either by cables, connectors,

Ceasing The cause of the alarm has ceased

Ceasing The cause of the alarm has ceased

If a fiber unit alarm is connected to external alarm 3, then the
operator can configure the WRH to display this alarm when the
fiber optical unit indicates alarm

e not found in the database (SW or calibration

error)

e database not found (calibration error)

or antenna problems.

Suggested remedy: Check antenna and cables

a FON PCBA is out of range. Suggested remedy:

Replace the FON PCBA.

mitter control loop voltage out of range. Suggested

remedy: Replace the FON PCBA

Ceasing The cause of the alarm has ceased

92 FON RxLevel

alarm

93 FON SPI

arm

al

245 Not In

Allowed Area

FON Warning Received optical level is below any of the two limits (one for

Warning and one for Error). Suggested remedy: Check optical
cables

Error Received optical level is below any of the two limits (one for

Warning and one for Error). Su
cables

Ceasing The cause of the alarm has ceased

FON F2F Error The SPI bus conn

Suggested remedy: Replace the FON PCBA

CU None WRH is

switched on or off

moved from the operating area and the RF HW is

ection to the RF modem does not work properly.

ggested remedy: Check optical

Remarks:

The Door Open alarm requires an optional door switch described in the Door Open Alarm section of
Chapter 3.

The Main power breakdown alarm requires an optional relay described in the Main Power Breakdown Relay
section of Chap

ter 3.

044-05251 Rev B 4-5

Field Replaceable Units Nexus FT

Field Replaceable Units

The following units can be replaced in the field on-site by a qualified technician with experience maintaining
RF equipment:

❑ FON
❑ PSU
❑ WRH

FON

To replace a FON PCBA, follow the steps listed in Table 4-3. For details on cables and connectors, see
Chapter 2.

CAUTION: Do not look into the end of any fiber optic cable. Be sure to cap fiber optic
cables to protect the connecting end from damage

CAUTION: Use of controls or adjustments or performance of procedures other than
those specified herein may result in hazardous radiation exposure"

NOTE

Verify ‘Fiberoptical’ classmark in the FON Status window is checked, otherwise FON will not be operational.
Classmarks are described in the OM-Online User Manual.
Verify that the keyed angle polished connectors are aligned properly before tightening. Improper alignment

n result in high si

ca

gnal loss and/or no connectivity with that node.

Table 4-3 FON Replacement Procedure

Step Action

1 Loosen all four locking screws on front of cabinet

2 Open WRH door and secure

3 Locate power connector on FON and remove connector from PCBA

4 Verify all cables on FON are labeled before disconnecting, then disconnect all cables.

5 Remove screws securing FON PCBA to FOU and remove PCBA

6 Replace FON PCBA in reverse order and apply power

7 Connect PC to OM Online port, login to FON and verify configuration and IP address.

8 Close WRH door and secure

NOTE

After replacing the FON, if measurements taken at the fiber connector are correct but the OM Online
measurement indicates a loss several dB higher, the likely causes are:

1) Dirty fiber.

2) The DIN to FC bulkhead adapter is bad.

3) Loose fiber connection on the FON board.

4) Bad WDM.

4-6 044-05251 Rev B

Nexus FT Field Replaceable Units

4

5

6

PSU

To replace a PSU, follow the steps listed in Table 4-4. For details on cables and connectors, see Chapter 2.

Figure 4-1 PSU Cable, Switch and Lable locations

Table 4-4 PSU Replacement Procedure

Step Action

1 Loosen all four locking screws on front of cabinet

2 Open WRH door and secure

3 Disconnect main power plug from PSU(Location 1 shown in Figure 4-1)

4 Disconnect power cable bundle from PSU(Location 2 shown in Figure 4-1)

5 Loosen but do not remove screws securing PSU using a 5mm Allen key and remove PSU (Location 3

own in Figure 4-1)

sh

6 On new AC power supply, if used, set input voltage switch on PSU to correct input voltage -- 115 VAC

or 230 VAC (Location 4 s

7 On new DC power supply, if used, verify that the supply voltage is 24 VDC or 48 VDC as stated on

label on PSU (Locat

8 Set new PSU to correct output supply voltage (27 VDC) by moving wire connection plug as illustrated

on label on PSU (Loc

9 Mount new PSU with all four fixing screws (Location 3 shown in Figure 4-1)

10 Connect PSU to DIA PCBA (Location 2 shown in Figure 4-9) with cable marked VE007 98/1. This

cable must be u
connector may be tied out of the way with a cable tie

11 Insert power cord (AC power supply) or connect DC power cable brown wire (Europe) or black wire

positive (+) pole a

(US) to
supply)

sed in all situations. If only one connection is available on DIA PCBA, the second

hown in Figure 4-1)

ion 5 shown in Figure 4-1)

ation 6 shown in Figure 4-1)

nd blue wire (Europe) or white wire (US) to negative (-) pole (DC power

12 Close WRH door and secure with four locking screws on front of cabinet

044-05251 Rev B 4-7

Remote Control Unit (RCU) Nexus FT

MS

DPX

ANT

TEST

DC

-30 dB

-20 dB

MS

DPX

ANT

TEST

DC

-30 dB

-20 dB

ALLGON INNOVATIO N
SWEDEN M105 R6

1

PARKING
FOR W5

W5

8

P27

W6B 10

1

P33

ALARM

P23
LNA

UP-LINK

P32

MODEM

A

U

X

1

P28
DOOR

5

9

6

1

1

16

1

1

M

-

>

S

P11

P34

8

9

15

P26

15 16

S

-

>

M

1

2

3

89

P

3

6

5

X0A

X0B

2

V2

1

16

P12 P13

1

1

1

16

16

16

P4

P5

P6

c
b
a

c
b
a

c
b
a

c
b
a

1P232

1

b
a

1

16P3

16

1

16

P14

1

V1

1

1

1

1

1

4

6

1

15

6

9

15

2

16

1

2

458

5

P35

P21
PSU

6

10

P31

PC

P29

P24

P25

GND

7

6V6

LNA

DOWN-LINK

LED
P22

1

2

POWER SUPPL Y UNIT

RCU

WRH

To replace a WRH, follow the steps listed in the Table 4-5.

WARNING: A fully loaded WRH can weigh 96lbs. Lifting of the WRH should be done by
two people. Do not attempt to carry the WRH up a ladder.

.

Table 4-5 WRH Replacement Procedure

Step Action

1 Loosen all four locking screws on front of cabinet

2 Open WRH door and secure

3 Disconnect main power plug from PSU

4 Verify all external cables connected to WRH are labeled before disconnecting, then disconnect all

xternal cables

e

5 Remove mounting screws from bottom legs of WRH and loosen mounting screws in top legs

6 Close and secure door

7 Lift the WRH off of mount hinges

8 Replace WRH in reverse order

9 Connect PC to OM Online port and verify configuration. For Fiber Optic installations, verify IP

ddress

a

10 Close WRH d

oor and secure

Remote Control Unit (RCU)

The RCU provides remote control of Powerwave WRHs. It contains an integrated mobile phone, modem and
power supply backup. The RCU is installed in the bottom front of the cabinet, on top of the PSU as illustrated
in Figure 4-2.

The RCU is connected to P130 on either an RCI or FON. A jumper is required between pins 1 and 2 on the

CI if the P130 ca

R
enough capacity for sending a number of alarms.

ble connector is disconnected. If a main power failure occurs, the unit has a battery with

Figure 4-2 RCU in the WRH cabinet

4-8 044-05251 Rev B

Nexus FT Return For Service Procedures

RCU for Radio Communication

The RCU antenna for a radio modem is connected to the BS antenna via the uplink DC, provided the RCU
and the WRH operate in the same cell system. Otherwise, the modem must have a separate antenna. Data is
transferred between the WRH and the RCU via the P130 modem port on the RCI or FON. The RCU is also
powered via the same port and has a battery with enough capacity to send a number of alarms if a main
power failure occurs.

RCU for Telephone Line Communication

The land line version uses a telephone line connected to a terminal block on the RCU. A free strain relief
bushing at the bottom of the WRH is used for the external telephone line cable.

Return For Service Procedures

When returning products to Powerwave, the following procedures will ensure optimum response.

Obtaining an RMA

A Return Material Authorization (RMA) number must be obtained prior to returning equipment to the factory
for service. Pease contact our Repair Department at [phone] to obtain this number, or FAX your
request to [phone]. Failure to obtain this RMA number may result in delays in receiving repair
service.

Repackaging for Shipment

To ensure safe shipment of the unit, it is recommended that the original package designed for shipping the
unit be reused. If it is not available, contact Powerwave’s Customer Service Department at 1-800-797-9283,
[phone] or by e-mail at [e-mail] for packing material.

044-05251 Rev B 4-9

Return For Service Procedures Nexus FT

This page intentionally left blank

4-10 044-05251 Rev B

Introduction

This chapter provides specifications for the WRH.

Table 5-1: WRH Specifications

Electrical

Frequency band UL 824 to 849 MHz (Cellular)

806 to 824 MHz (800 iDEN)
880 to 915 MHz (GSM 900)
896 to 901 MHz (900 iDEN)
1710 to 1785 MHz (GSM 1800)
1850 to 1910 MHz (PCS)
1920 to 1980 MHz (UMTS)
1710 to 1755 MHz (AWS 2100)

Frequency band DL 869 to 894 MHz (Cellular)

851 to 869 MHz (800 iDEN)
935 to 940 MHz (GSM 900)
925 to 960 MHz (900 iDEN)
1805 to 1880 MHz (GSM 1800)
1930 to 1990 MHz (PCS)
2110to 2170 MHz (UMTS)
2110 to 2155 MHz (AWS 2100)

Chapter 5

Specifications

Max absolute delay <300 ns

Gain adjustment range (in 1 dB steps) 30 dB

Gain

Uplink
Downlink
Variation

Instantaneous bandwidth 25 MHz (Cellular)

Uplink AGC limit 0 dBm at FON input

Downlink AGC limit 43 dBm at antenna port

Return Loss 11 dB

35 to 60 dB typical - Excluding fiber link
45 to 70 dB typical - Excluding fiber link
± 1.5 dB versus temperature including fiber link
± 1.5 dB versus DL frequency including fiber link
± 0.5 dB versus DL output power including fiber link
± 0.5 dB versus input voltage including fiber link
± 2.0 dB versus UL frequency including fiber link

18 MHz (800 iDEN)
35 MHz (GSM 900)
5 MHz (900 iDEN)
75 MHz (GSM 1800)
60 MHz (PCS)
60 MHz (UMTS)
45 MHz (AWS)

044-05251 Rev B 5-1

Introduction Nexus FT

Table 5-1: WRH Specifications (Continued)

Downlink, Spurious and Emissions level -13 dBm/1 MHz (FCC)

-36 dBm (below 1 GHz, per ETSI EN 300 609-4)

-30 dBm (above 1 GHz, per ETSI EN 300 609-4)

Downlink power +43 dBm RMS (20 Watts) (for FCC - UMTS)

+40 dBm RMS (10 Watts) (for ETSI - GMS/EDGE)

Noise figure excluding fiber optic link 4 dB

Fiber-Optic Link Budget 10 dBo

Receiver input port return loss 14 dB

Power supply voltage 115/230 VAC

21-60 VDC

Maximum Current Draw (Single Band) 6 A @ 115 VAC

3 A @ 230 VAC
15A @ 21-60 VDC

Maximum Current Draw (Dual Band) 6 A @ 115 VAC

3 A @ 230 VAC
15A @ 21-60 VDC

Recommended Fuse size
Single Band

10 A for AC voltage
20 A for DC voltage

Dual Band

Power consumption 210 W typical, 300 W max (Single band)

Impedance

Input
Output

Mechanical

Dimensions (W x H x D in inches) 465 x 530 x 195 mm (18.3 x 20.9 x 8.3 in) incl. hinges (low cover)

Weight <25 kg (55 lbs) low cover

Service Antenna port connector 7/16 DIN Female

Donor Optical port connector FC/APC

Environmental

Operating Temperature Range -25 °C to +55 °C (-13°F to +131°F)

Altitude -142 m to 4000 m (-466 ft. to 13100 ft.

Casing class NEMA4/IP65

20 A for AC voltage
40 A for DC voltage

420 W typical, 600 W max (Dual band)

Not Applicable - Optical input
50 Ω

465 x 530 x 310 mm (18.3 x 20.9 x 12.3 in) incl hinges (high cover)

<44 kg (96 lbs) high cover

Fiber Optic Node (FON)

Bandwidth @ 3dB 800 – 2200 MHz

Power Consumption, total <5 W

5-2 044-05251 Rev B

Nexus FT Introduction

Table 5-1: WRH Specifications (Continued)

Wavelength TX: DFB 1310 or 1550 nm

RX: 1250 – 1600 nm

Transmit

Max continuous RF input
Optical output power, two levels
RF attenuation settable by SW in 1dB steps

Receive

Max optic power input
RF attenuation settable by SW in 1dB steps
Alarm threshold level, settable warning
Alarm threshold level, settable error

+36dBm
+3 or 0dBm
0-20dB

+5dBm
4-24dB
0-40dBm
0-40dBm

044-05251 Rev B 5-3

Introduction Nexus FT

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5-4 044-05251 Rev B

Appendix A

WDM

FOU

DX

DX

DPX

DPX

WBA

WBA

DL

DL

UL

UL

LNA

LNA

MCPA

MCPA

To/From

OCM or

BMU

RCU

RCI

PSU

CU

FON

ALI

To

External

alarms

850 MHz

TX0/RX0

1900 MHz

TX0/RX0

Block Diagrams

Introduction

This appendix describes the main signals paths for the WRH.

Non-Diversity

Figure A-1 shows the non-diversity block diagram configuration of the WRH. The WRH is always fed by a BTS
via either a BMU or an OCM. The TX signal from the BTS is converted to an optical signal in a BMU or OCM
and fed to the WRH via a fiber optic cable. The optical signal is then received by the FON and converted to an
RF signal. The FON supervises the signaling and reports errors via the RCU connected to the CU.

The RF signal enters the WBA, is amplified, and further amplified in amplifier stages followed by controllable

ttenuators. Th

a
amplified output signal passes the DPX before it is fed to the service antenna.

The uplink signal path is located on the same WBA but goes through an LNA before entering the WBA.

e signal exits the WBA and enters the MCPA where it is amplified and fed to the DPX. The

Figure A-1 WRH Block Diagram - Non-Diversity

044-05251 Rev B A-1

Diversity Nexus FT

WDM

DX

DX

DPX

WBA

DL

LNA

MCPA

To/From

OCM or

BMU

RCU

RCI

PSU

CU

FON

ALI

To

External

alarms

FOU

DX

LNA

DPX

DPX

WBA

LNA

MCPA

LNA

DPX

UL

DL

FON

1900 MHz

TX0/RX0

850 MHz

TX0/RX0

850 MHz

RX1

1900 MHz

RX1

UL

UL

UL

Diversity

Figure A-2 illustrates the diversity block diagram configuration of the WRH. With diversity installed, there are
two paths on the UL instead of one. This requires an additional FON for the added receive path signal. Signal
flow is identical to the non-diversity version with the MCPA on the DL and LNAs on the UL providing the
additional amplification out of and into the WBA.

Figure A-2 WRH Block Diagram - Diversity

A-2 044-05251 Rev B

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