Powerwave Technologies 5JS0115, 5JS0114 Users manual

WIDEBAND RADIO HEAD

INSTALLA TION AND SERVICE MANUAL

WRH

NEXUS FT

044-05251 Rev C October 2009

© 2009 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 th is 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 eq u ipm e nt 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 gove rning mo bile 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 requ ires carrier consent under FCC rules. T his 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 (iDEN800 and
iDEN900) of the FCC Rules depending on the band of operation. Changes or modifications not exp ressly 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 mar ket meet all requirements of the Canadian Interfere nce-Caus-

ing Equipment Regulations. The -20dB bandwidth at 190 0 MHz band is 80 MHz. The -20d B bandwidth at 1 900+G MHz
band is 77.4 MHz. The -20dB bandwidth at the 700 MHz is 23.5 MHz. The -20dB bandwidth at the 700 MHz is 23.5
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, e specially 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 re sult in the
consequences described below if precautions are not taken. Notes clarify and provide additional
information to assist the user.

WARNING: The warning sy
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 d amage or loss of

data.

mbol means danger. You are in a situation that could

NOTE: No

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

044-05251 Rev C i

Revision Record Nexus FT

Revision Record

Revision Letter Date of Change Reason for Change

Rev A November 2007 Initial Release
Rev B February 2008 Renamed product to Nexus FT, added new

Chapter 1 - Product Safety, added text regarding
FON maintenance to pages 3-8

and 4-6.

Rev C November 2009 Upated content to include WMATA ad

(PCS+G, CS700MHz)

ditional bands

ii 044-05251 Rev C

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 and retr
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 loc

❑ For outdoor use, the power cord shou ld meet at least IP6

Do not turn the main power on until you are ready to commission the Nexus FT.

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

electric shock. Disconnect
are to be followed when servicing such units. Only authorized service person n el ar e
allowed to service units while the mains are connected.

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

close

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

not to drop parts or the

❑ All RF transmitting units, including Nexus FTs, will

give rise to electromagnetic fields that may be hazardous to the health of any person
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,
authorized service technician.

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

poison
the local prescriptions.

❑ The FON unit contains a Class 1M laser transmitter that em

radiation at 1550 nm during operation and is intended for a restricted location. Avoid
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.

❑ The FON Unit has this label attached:

al prescriptions.

d by the wind and cause your fingers getting pinched or your head being hit.

this battery must only be removed from the board by a Powerwave

ous substances. If replaced, the old batteries should be d isposed of as stated in

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

5 encapsulation requirements.

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

entire Nexus FT. Falling parts can cause serious personal injury.

generate radio signals and thereby

its 2—4 mW invisible laser

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

port, or if a fibe

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

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

044-05251 Rev C iii

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

m and 1550nm laser light is not

Electrostatic Discharge (ESD) Nexus FT

Human Exposure to RF Radiation

Safe distances must be kept when working around antennas. The follo wing parag raphs 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
base station and a service antenna directed towards the coverage area. A fiber optic cable from the base
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 p
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 standar d with the purpose to protect ba se
stations from noise and other performance dropping effects.

Radiation Exposure

The World Health Organization (WHO) an d In te rn at ion al Comm ission on Non-Ionising Radiation Protecti on
(ICNIRP) ha
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 po

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

ve determin

S= P/(4

πr

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

wer ca

2

)

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

to a donor antenna directed towards the

n be calculated by using the following formula:

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
equipment or first touch the chassis with your hand. Never let your clothes touch PCBAs or
uninsulated conductor surfaces and always store PCBAs in ESD-safe bags.

surfaces, use ESD protective

iv 044-05251 Rev C

Table of Contents

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

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

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

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

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

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

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

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

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

Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-7

External Alarm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-7

Door Open Alarm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-7

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

21-60 Volt DC PSU Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-8

Commissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-8

Initial Startup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-9

Passive Intermodulation (PIM) Testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-10

044-05311 Rev C v

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

Specifications

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

Appendix A, Block Diagrams

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

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

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

vi 044-05311 Rev C

List of Figures

1-1 PowerwaveWRH 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

1-7 700 MHz (CS, PCS) Sub Unit Locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-5

1-8 Fiber Optic Star Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-6

1-9 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 FON Connector Locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-6

2-7 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 WRH Cable Connections for 700 MHz unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-6

3-8 External Alarm Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-7

3-9 Main Power Breakdown Relay Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-8

3-10 Connecting a PC for Local Access . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-9

3-11 PIM testing two carriers and one WRH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-10

3-12 PIM testing one carrier over each of two WRHs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-10

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

044-05311 Rev C vii

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 LNALNA Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-6

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

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

3-1 Main Power Breakdown Relay Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-8

3-2 Initial Statup Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-9

3-3 PIM Testing Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-11

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

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

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

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

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

vii 044-05251 Rev C

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 wh ich
occur after the printing date may be incorporated by a complete manual revision or alterna tively as add itions.

Overview

Figure 1-1 PowerwaveWRH Radio Head

Powerwave Nexus FTs work as bi-directional on-frequency amplifiers
areas in wireless mobile systems such as base station fringe areas, tunnels, convention centers, airports and
buildings. It receives, amplifies, and transmits signals to/from a base transceiver station (BTS) to/from mobile
stations (MS) with both directions being served simultaneously. Conn ections to theWRHare made with N-type
or 7/16" male connectors.

used to extend coverage into uncovered

044-05251 Rev C 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 Cen ter (NOC) configuration an d
alarm monitoring.

Nexus FTs can be configured in many combinat ions dep
system operation, and output power. The following paragraphs provide a descr iption of the different models of
Nexus FTs available.

TheWRHis a fiber fed system designed to provide a high ou
in the downlink path. The MCPA restricts the number of bands to o ne in the cabine t and one additional band if
a high cover is used. The MCPA is located in the cabinet and is supplied from the existing PSU.

ending

on the wireless system, single or double

tput power level and comes equipped with a MCPA

Chassis Design

TheWRH 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 theWRH 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 ind ependentWRH unit. AWRH with a high
cover that is equipped as two independent units can, for example, be eq uipped for channel selective ope ration
in the cabinet and band selective operation in the cover.

Inside the Nexus FT, a number of amplifier PCBAs are individu
that can be opened outward. These PCBAs are of different types depending on the supported system.

ally shielded an

d located under a metal cover

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 ban d. Each ba n d re qu ire s on e WBA for the uplin k an d
downlink, and on
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 PCBA (MCPA)

The MCPA is used to amplify the output signal from the WBA. Each MCPA can
direction. It requires an extra heat sink element on the ou tside of the cabinet or h igh cover to dissipate the heat
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.

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

handle one band in the downlink

1-2 044-05251 Rev C

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

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

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 othe

r PCBAs and units connect in the cabinet with the
exception of the PA. Figure 1-2 shows a DIA PCBA. A shielded metal frame on the DIA provides the mounti ng
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 contains 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 suc h as gain con t rol 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 cabine

t and the high cover, if equipped. An
example of an LNA is illustrated in Figure 1-4. All of the coaxial connectors are SMA-type. Signals from the DPX
output are fed to the LNA input connector (IN). The OUT1 and OUT2 outpu ts 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 C 1-3

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

late in the uppe

r part of the Nexus FT. The FON and

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 addition, th
It has also functionality for:

There are two versions of the FON; one with three SMA por
ports (UL, DL, RX Mon and TX Mon). The FON also has two optical ports for DL and UL fiber connections.

Power Supply Unit (PSU)

The PSU supplies DC power to all of the compon

Remote Control Unit (RCU)

The RCU is an optional communication unit for remote control of Nexu
types and details are described in Chapter 4.

1-4 044-05251 Rev C

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

• Electrical and optical signal supervisio

• Internal and external alarm handling

• 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

ents in the Nexus FT.

n

ts (UL, DL

and RX Mon) and the other with four SMA

s FTs via PSTN or RF modems. RCU

Nexus FT Overview

1550

1310

MCPAs

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

The ALI handles alarms and alarm communication. It is rep

laced 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 alar ms
and alarm communication. Either unit is located in the lower left part of the shielded DIA frame.

Sub Unit Locations

The MCPA is located in the cabinet at the positions indicated in Figure 1-6. A WRH is equipped for one band
in the cabinet and, if required, an additional band in a high cove

r. A block diagram is located in Appendix A.

Figure 1-6 Nexus FT Sub Unit Locations

Figure 1-7 700 MHz (CS, PCS) Sub Unit Locations

044-05251 Rev C 1-5

Overview Nexus FT

BMU WRH

WRH

WRH

WRH

BTS

RF

Fiber Optic Distribution Networks

Fiber optic networks are setup identically to da ta networks. Nexus FTs are connected in a sta r 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
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.

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 t wo sectors each. Each s ector is connected to a POI and then
to a RCM. The RCM is interconnected with an OCM via co axial cab les. Th e com bined DL an d UL signals a re
converted to optical signals in the OCM and then distributed to the Nexus FTs-V.

Operator 1

Operator 2

Figure 1-8 Fiber Optic Star Configuration

OCM

Sector 1

Sector 2

Sector 1

BTS-POI

BTS-POI

BTS-POI

BTS-POI

OCM-POI

OCM-POI

Sector 2

Figure 1-9 Multi-operator System

1-6 044-05251 Rev C

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

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

POWER SUPPLY UNIT

CU

ALI

or

RCI

SV

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 prov

ide 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 C 2-1