Powerwave Technologies 5JS0114 AC/DC Radio Heads User Manual 044 05251 Nexus FT Rev C

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Document ID	1194049
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Document Description	Users Manual
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Document Type	User Manual
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Filesize	228.5kB (2856222 bits)
Date Submitted	2009-11-04 00:00:00
Date Available	2009-11-06 00:00:00
Creation Date	2009-10-16 13:23:10
Producing Software	Acrobat Distiller 8.1.0 (Windows)
Document Lastmod	2009-11-04 09:57:01
Document Title	044-05251 Nexus FT Rev C.book
Document Creator	FrameMaker 7.2
Document Author:	rwillett

WIDEBAND RADIO HEAD
WRH
NEXUS FT
INSTALLATION AND SERVICE MANUAL
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 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 (iDEN800 and
iDEN900) 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 1900+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, 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 +1 714 466 1000 – Fax +1 714 466 5800 – 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 C
Revision Record
Nexus FT
Revision Record
Revision Letter
ii
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 additional bands
(PCS+G, CS700MHz)
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.
044-05251 Rev C
❑
Powerwave Nexus FTs are designed to receive and amplify signals from one or more
base stations and retransmit the signals to one or more mobile stations. And, also to
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 prescriptions.
❑
For outdoor use, the power cord should meet at least IP65 encapsulation requirements.
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 voltage that can cause
electric shock. Disconnect the mains prior to any work in such a unit. Local regulations
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 wind and cause your fingers getting pinched or your head being hit.
❑
When working on a Nexus FT on high ground, for instance on a mast or pole, be careful
not to drop parts or the entire Nexus FT. Falling parts can cause serious personal injury.
❑
All RF transmitting units, including Nexus FTs, will generate radio signals and thereby
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, this battery must only be removed from the board by a Powerwave
authorized service technician.
❑
NiCd batteries are mounted on the FON PCBA. These batteries contain environmental
poisonous substances. If replaced, the old batteries should be disposed of as stated in
the local prescriptions.
❑
The FON unit contains a Class 1M laser transmitter that emits 2—4 mW invisible laser
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:
❑
Do not power up the FON unit if a fiber cable is not connected to the fiber output UL
port, or if a fiber cable is connected to the port but disconnected at the other end.
❑
Never look at the end of a fiber cable. The 1310nm and 1550nm laser light is not
visible. Always use an instrument, such as a power meter, to detect signaling.
iii
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 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 public areas. The antenna radiation level is affected by Nexus FT output power, antenna gain, and
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 determined recommendations for radiation exposure. ICNIRP recommends not to exceed the
following radiation power for public exposure:
Frequency Radiation power
800/900 MHz
1800/1900 MHz
2100 MHz
4.5W/m²
9.0W/m²
10.0W/m²
For antennas larger than 20cm the maximum radiation power can be calculated by using the following formula:
S= P/(4πr2)
S = Radiation power in W/m²
P = Output power in W
r = Distance between antenna and human in meters
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
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.
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
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
1-2
1-3
1-4
1-5
1-6
1-7
1-8
1-9
PowerwaveWRH Radio Head . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-1
DIA PCBA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-3
CU PCBA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-3
LNA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-4
FOU in Nexus FT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-4
Nexus FT Sub Unit Locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-5
700 MHz (CS, PCS) Sub Unit Locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-5
Fiber Optic Star Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-6
Multi-operator System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-6
2-1
2-2
2-3
2-4
2-5
2-6
2-7
External Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-1
Cabinet Internal Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-1
CU PCBA Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-2
FON LED Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-3
DIA PCBA Connectors and Testpoints . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-4
FON Connector Locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-6
PSU Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-7
3-1
3-2
3-3
3-4
3-5
3-6
3-7
3-8
3-9
3-10
3-11
3-12
Mounting Bracket . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-2
Mounting Bracket Installation on Wall . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-2
Attaching the Bracket to a Pole . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-3
Attaching the Bracket to a Mast . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-3
Attaching the WRH to the Bracket . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-4
WRH Cable Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-5
WRH Cable Connections for 700 MHz unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-6
External Alarm Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-7
Main Power Breakdown Relay Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-8
Connecting a PC for Local Access . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-9
PIM testing two carriers and one WRH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-10
PIM testing one carrier over each of two WRHs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-10
4-1
4-2
PSU Cable, Switch and Lable locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-7
RCU in the WRH cabinet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-8
A-1
A-2
WRH Block Diagram - Non-Diversity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1
WRH Block Diagram - Diversity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-2
044-05311 Rev C
vii
List of Tables
2-1
2-2
2-3
2-4
2-5
2-6
2-7
2-8
CU PCBA LED Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-2
FON LED Indications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-3
WRH Base Unit Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-4
WRH Cover Unit Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-4
DIA PCBA Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-5
LNALNA Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-6
FON Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-6
Hardware / Software Compatibility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-8
3-1
3-2
3-3
Main Power Breakdown Relay Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-8
Initial Statup Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-9
PIM Testing Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-11
4-1
4-2
4-3
4-4
4-5
Recommended Periodic Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-1
Alarm Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-1
FON Replacement Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-6
PSU Replacement Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-7
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 which
occur after the printing date may be incorporated by a complete manual revision or alternatively as additions.
Overview
Figure 1-1 PowerwaveWRH Radio Head
Powerwave Nexus FTs work as bi-directional on-frequency amplifiers used to extend coverage into uncovered
areas in wireless mobile systems such as base station fringe areas, tunnels, convention centers, airports and
buildings. It receives, amplifies, and transmits signals to/from a base transceiver station (BTS) to/from mobile
stations (MS) with both directions being served simultaneously. Connections to theWRHare made with N-type
or 7/16" male connectors.
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 Center (NOC) configuration and
alarm monitoring.
Nexus FTs can be configured in many combinations depending on the wireless system, single or double
system operation, and output power. The following paragraphs provide a description of the different models of
Nexus FTs available.
TheWRHis a fiber fed system designed to provide a high output power level and comes equipped with a MCPA
in the downlink path. The MCPA restricts the number of bands to one in the cabinet and one additional band if
a high cover is used. The MCPA is located in the cabinet and is supplied from the existing PSU.
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 independentWRH unit. AWRH 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
that can be opened outward. These 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 associated PA or MCPA for the downlink. The cabinet can be equipped with up to two WBAs
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 handle one band in the downlink
direction. It requires an extra heat sink element on the outside of the cabinet or high 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.
1-2
044-05251 Rev C
Nexus FT
Overview
Distribution PCBA (DIA)
The DIA is the core distribution PCBA to which all other 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 mounting
location for the CU, ALI and RCIs, if used.
P36
P11
P34
V2
P12
P13
P29
P14
P22
V1
XOB
16
V2
P28
P36
X0A
16 1
15
P34
16
P5
P3
15
16
16
P4
P2
32
P31
PC
P27
P32
MODEM
W6B 10
P21
PSU
ALLGON INNOVATION
SWEDEN
M105 R6
LNA
DOWN-LINK
V6
P24
GND
V6
GND
P35
PARKING
FOR W5
P32
P24
10
P33
ALARM
AUX1
W5
P25
16
15
P29
P23
LNA
UP-LINK
V6B
P25
15
P28
DOOR
V1
LED
P22
P26
16
P14
X0B
P23
P27
16
P13
16
P6
S->M
P26
16
P12
P11
M->S
XOA
P33
P4
P5
P6
P2
P3
P21
P35
P31
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 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
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 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 C
1-3
Overview
Nexus FT
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
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.
DPX
FON
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, the FON has all the functionality included in the CU PCBA and contains battery backup.
It has also functionality for:
•
•
•
•
•
•
Electrical and optical signal supervision
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
There are two versions of the FON; one with three SMA ports (UL, DL and RX Mon) and the other with four SMA
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 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 are described in Chapter 4.
1-4
044-05251 Rev C
Nexus FT
Overview
Alarm Interface PCBA (ALI) and Remote Control Interface PCBA (RCI)
The ALI handles alarms and alarm communication. It is replaced 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 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 cover. A block diagram is located in Appendix A.
MCPAs
1550
1310
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
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
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.
BMU
WRH
BTS
RF
WRH
WRH
WRH
Figure 1-8 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.
OCM
Operator 1
Sector 1
BTS-POI
BTS-POI
OCM-POI
BTS-POI
OCM-POI
Sector 2
Operator 2
Sector 1
BTS-POI
Sector 2
Figure 1-9 Multi-operator System
1-6
044-05251 Rev C
Chapter 2
Controls, Indicators and Connectors
Introduction
This chapter contains descriptions of the controls, indicators and connectors for the WRH.
Front Cover Indicators
Amber
Red
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
POWER
FAULT
BOOT
OPER
16
V2
P36
16
P12
P34
LED
P22
16 1
15
16
15
P25
P29
P32
MODEM
W6B 10
P4
16
P2
32
P31
PC
10
P33
ALARM
P21
PSU
AUX1
15
P27
W5
16
P3
P23
LNA
UP -LINK
DPX
TEST
-30 dB
16
P5
15
P26
DC
P28
DOOR
V1
P14
X0B
16
P13
16
P6
X0A
S->M
16
P11
CU
MS
-20 dB
POWER
ALARM
M->S
ALI
or
RCI
OPER
FAULT
10V
ALLGON INNOVATION
SWEDEN
M105 R6
P24
LNA
DOWN-LINK
V6
DC
DPX
GND
TEST
-30 dB
MS
-20 dB
P35
PARKING
FOR W5
ANT
ANT
POWER SUPPLY UNIT
WLI / R2R
DATA
Figure 2-2 Cabinet Internal Indicators
044-05251 Rev C
2-1
PCBA Indicators
Nexus FT
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.
WLI
DATA
POWER
BOOT
FAULT
OPER
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 subcarrier. A steady green LED indicates: the unit is
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 red LED when the CU boots (10 – 15 seconds after main power is
switched on), then flashing red (5 – 10 seconds), then off if no error is
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 less serious alarms (Error) and is on solid for fatal alarms
(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.
2-2
044-05251 Rev C
Nexus FT
PCBA Connections
FON PCBA
The FON is shown in Figure 2-4 and the LED indicators are listed in Table 2-2.
P117
Figure 2-4 FON LED Indicators
Table 2-2 FON LED Indications
LED
Description
FLI or
F2F
Green LED. Fiber Line Interface (FLI). Flashing LED indicates the unit is receiving
data over the sub carrier. A steady LED indicates the unit has detected an FLI subcarrier, but is not carrying any data
OPER
Green LED. Lights up for approximately 5 seconds after the power is switched on.
The LED is dark during the boot process and when it is steadily lit again, it indicates
the unit is ready for operation
FAULT
Red LED. Flashes for 15 – 20 seconds after the mains is switched on. Will flash for
less serious alarms and be steady for fatal alarms
POWER
Yellow LED. Indicates power is present
BOOT
Red LED. Steady LED when the control unit boots up (10 – 15 seconds after the
mains is switched on). Next enters a flashing state for 5 – 10 seconds. If no error is
detected, the LED turns off. If an error occurs, the LED remains on
WLI
Green LED. Wire Link Interface. Flashing LED indicates unit is receiving data over
the subcarrier. A steady LED indicates one of the following: The unit is not currently
receiving any data, the unit is not currently a control station or there is no other node
in the network
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
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 C
2-3
PCBA Connections
Nexus FT
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 2-3 applies to cables connected to FRUs (PSU and 2 FON) labeled Main FON and Diversity FON.
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.
P36
P11
P34
V2
P12
P13
P29
P14
P22
V1
XOB
16
V2
P23
P37
V6B
P27
16
16
P13
P34
S->M
X0A
LED
P22
16 1
15
P23
P28
DOOR
P3
16
15
P25
UL LNA ATTN
DIV
P32
MODEM
W6B
16
P4
P2
32
UL LNA ATTN
10
P33
ALARM
P21
PSU
ALLGON INNOVATION
SWEDEN
M105 R6
V6
P38
10
P24
V6
P38
DIV
GND
GND
P35
PARKING
FOR W5
P32
P24
P31
PC
W5
16
15
P29
1 6
P27
P25
16
P5
15
P26
X0B
V1
P14
16
P6
AUX1
P28
P36
P26
16
P12
P11
M->S
XOA
P33
P4
P5
P6
P2
P3
P21
P35
P31
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 inputs 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 C
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 to ground or any other alarm terminal, are 50 VAC / 60 VDC. The alarm outputs are defined as
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.
Table 2-5 DIA PCBA Connections
Port
Connected to
P2
CU PCBA
P3, 5, 6
Not Used
P4
P11 - 14
ALI or RCI PCBA
Channel PCBA positions 1 through 4
P21
PSU, connector 1
P22
LED PCBA in cover
P23
LNA/UL (for RH770020/101 ONLY, P23 connects to LNA/UL1)
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
provide the CU and ALI/RCI PCBAs with voltage. If there is no cable
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
EAL4 which is arranged using an optional door switch. Signal AI4 and AIC
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
and alarm equipment. Four alarm inputs, EAL1 – EAL4, and two alarm
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 (for RH770020/101 ONLY, P38 connects to LNA/UL2)
044-05251 Rev C
2-5
PCBA Connections
Nexus FT
LNA
Figure 2-6 shows the front of the LNA and Table 2-6 lists the connections.
Table 2-6 LNALNA Connections
LNA Port
Connected to
OUT LOW
IN on the LNA/UL in the cover, if equipped
IN
ATT +7V
LO on the service DPX duplex filter
P23 on the DIA PCBA
OUT1
P2101 on the WBA PCBA
OUT2
Diversity LNA connected to P3101 on WBA PCBA
Figure 2-6
NOTE: For RH770020/101 only, the OUT 1 on the LNA for UL 1 connects to P2101 and Out 1 for LNA on
UL 2 connects to P3101.
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.
P117
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 the front cabinet door
P106
9-pin D-sub female, RS-232 used for local PC communication
P108/116
P109
2-6
6-pin male, parallel connected power ports for the FON
7-pin male, used for external alarm sensors
044-05251 Rev C
Nexus FT
PCBA Connections
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
has jumper between the 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 connection 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).
AC
Power
V2
V1
16
V2
P34
LE D
P22
16 1
15
P28
DOOR
15
16
P5
P3
P26
16
15
P4
16
P2
32
P31
PC
P32
MODEM
W 6B
10
P21
PSU
AL LGON INNOVATION
SW EDE N
M 105 R6
P24
LN A
DOW N-LINK
V6
DC
DPX
10
P33
AL ARM
AUX1
W5
P25
P29
P2 3
L NA
UP-LINK
P2 7
16
15
X0 B
V1
P14
M->S
S->M
16
P13
16
P6
X0A
16
P12
P36
16
P11
GND
TEST
-30 dB
MS
-20 dB
P3 5
PARKING
FOR W5
P21
P35
ANT
POWER SUPPLY UNIT
Figure 2-8 PSU Location
044-05251 Rev C
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
D631-18072-004
D631-18072-005
This information is accurate as of 10/16/2009. 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 provided with the program files).
2-8
044-05251 Rev C
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:
❑ Visually inspect equipment for damage that may have occurred during shipment. If possible, in the
presence of the delivery person.
❑ 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),
see Chapter 4.
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
the WRH with no obstacles. The operating temperature must not exceed 131°F (55°C). A shelter can be used
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
temporary shelter can be erected.
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 C
3-1
Mounting
Nexus FT
411
Ø14
90
135
144
205
250
300
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 C
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
screw.
Figure 3-4 Attaching the Bracket to a Mast
044-05251 Rev C
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 regulations you must select one of the following classified and approved cord types:
❑ 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 are ready to commission the WRH.
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.
3-4
044-05251 Rev C
Nexus FT
Connections
Table 3-1 Cable Connection Procedure
Step
Action
Connect service antenna coaxial cable to left-outside DIN connection on cabinet
Connect fiber optic cable from OCM or BMU to fiber optic cable demark on FOU
Connect station ground to appropriate ground point in cabinet
Mount main power plug to main power cord and insert into PSU
WRH
Figure 3-6 illustrates the cables and connections for the WRH.
1550
1310
Fiber Optic
Connection
Power connection
Service Antenna
Connection
Ground Points
Figure 3-6 WRH Cable Connections
044-05251 Rev C
3-5
Connections
Nexus FT
Fiber Optic
Connection
Power connection
Service Antenna Connection
Ground Points
Figure 3-7 WRH Cable Connections for 700 MHz unit
3-6
044-05251 Rev C
Nexus FT
Optional Connections
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.
P28
P33
16
V2
P36
S->M
X0A
16
P34
16 1
15
LED
P22
P28
DOOR
P3
16
P27
P32
MODEM
W6B 10
P4
16
P2
32
P31
PC
P21
PSU
ALLGON INNOVATION
SWEDEN
M105 R6
P24
LNA
DOWN-LINK
V6
DC
DPX
10
P33
ALARM
AUX1
W5
MS
-20 dB
P25
16
15
P23
LN A
UP -LIN K
DPX
TEST
-30 dB
15
P29
DC
16
P5
15
P26
V1
P14
X0B
16
P13
16
P6
M->S
16
P12
P11
GND
TEST
-30 dB
MS
-20 dB
P35
PARKING
FOR W5
ANT
ANT
POWER SUPPLY UNIT
Figure 3-8 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
breakdown relay connection, follow the steps listed in Table 3-2.
044-05251 Rev C
3-7
Commissioning
Nexus FT
Table 3-2 Main Power Breakdown Relay Connection
Step
Action
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
Connect relay coil. Coil must be supplied from same fuse as WRH
After commissioning, select Mains Breakdown in alarm configuration window in OM-Online. For
details on setting alarm configuration see OM-Online User Manual.
16
V2
P36
S->M
X0A
16
P34
LED
P22
16
P5
P3
15
P26
16
P27
P4
16
P2
32
P32
MODEM
W6B 10
P31
PC
W5
P21
PSU
ALLGON INNOVATION
SWEDEN
M105 R6
P24
LNA
DOWN-LINK
V6
10
P33
ALARM
AUX1
MS
-20 dB
P25
P29
TEST
16
15
P23
LNA
UP-LINK
DPX
-30 dB
15
DC
P28
DOOR
V1
P14
X0B
16 1
15
16
P13
16
P6
M->S
16
P12
P11
GND
P35
PARKING
FOR W5
ANT
POWER SUPPLY UNIT
P33:AI1
P33:AIC
Figure 3-9 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.
3-8
044-05251 Rev C
Nexus FT
Commissioning
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.
P31
16
V2
P36
S->M
X0A
P34
P27
16
15
P25
P32
MODEM
W6B 10
P4
16
P2
32
P31
PC
10
P33
ALARM
P24
LNA
DOWN-LINK
V6
P21
PSU
AUX1
W5
15
DPX
16
P29
TEST
P3
P23
LNA
UP-LINK
-30 dB
16
P5
15
P28
DOOR
V1
LED
P22
P26
DC
16
P14
X0B
16 1
15
MS
-20 dB
16
P13
16
P6
M->S
16
P12
P11
ALLGON INNOVATION
SWEDEN
M105 R6
GND
P35
PARKING
FOR W5
ANT
POWER SUPPLY UNIT
Figure 3-10 Connecting a PC for Local Access
Initial Startup
To complete the inital start-up of the WRH, follow the steps listed in Table 3-3.
Table 3-3 Initial Statup Procedure
Step
Action
Turn main power on
Check Yellow LED on power supply unit. Steadily lit = functioning correctly
Check the four CU PCBA LEDs. Refer to CU PCBA section in Chapter 2 for correct power up
indications
Check the three ALI PCBA LEDs or corresponding LEDs on RCI PCBA. Refer to ALI or RCI PCBA
section in Chapter 2 for 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.
044-05251 Rev C
3-9
Commissioning
Nexus FT
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.
E4402B
Spec. An.
E4432B
SIG Gen
(or BTS)
Σ
E4432B
SIG Gen
(or BTS)
WRH-V
OCM
Load /
DAS
Figure 3-11 PIM testing two carriers and one WRH
E4432B
Sig Gen /
BTS 1
WRH-V
OCM
Hybrid
E4432B
Sig Gen /
BTS 2
Load /
DAS
WRH-V
Under Test
OCM
E4402B
Spec. An.
Figure 3-12 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
path is free of PIM noise. 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) - f2
and
rd
3 order product = (2 * f2) - f1
3-10
044-05251 Rev C
Nexus FT
Commissioning
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
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)
Set WRH UL gain to 60 dB and DL gain such that desired per carrier power is presented at output
port
Set Spectrum Analyzer to 100 kHz resolution bandwidth and view RX band at 3rd order product
frequency calculated in step 1
Loosen fastening screw in each corner on front cover of WRH under test, and open cover
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.
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.
Enable WRH TX signal. For details on using OM-Online, see OM-Online user manual
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
If a higher level of noise exists, disable the WRH TX signal and disconnect cable to DAS at bottomleft 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
044-05251 Rev C
3-11
Commissioning
3-12
Nexus FT
044-05251 Rev C
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
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
Clean equipment
Clean as required depending on operating environment
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
Power
Alarm Unit
PSU
PSU
044-05251 Rev C
Alarm
Description
Critical
PSU1 in the cabinet does not work properly. A sum signal from
the PSU1 indicates that at least one voltage output has dropped. If
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 start-up, and there is a corresponding critical
PSU1 alarm logged in the Events log. The WRH will restart when
the power is back and this alarm will be sent
Critical
PSU2 in the cover does not work properly. A sum signal from the
PSU2 indicates that at least one voltage output has dropped. If no
mains breakdown relay is used, then the alarm will also be sent at
mains breakdown
4-1
Troubleshooting
Nexus FT
Table 4-2 Alarm Troubleshooting (Continued)
ID
Alarm Text
Power
WRH restart
Mains
breakdown
Alarm Unit
FON
CU
External
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
Error
The FON 10 Volt charger voltage is below limit. Suggested
remedy: Replace the FON
Ceasing
The cause of the alarm has ceased
None
Power on start, or user ordered reboot. Logged to indicate a
normal power up, or a restart ordered by the operator
Warning
Software error restart, 1st – 7th time. Restart 1st to 7th time during
a 14 day period. The counter is reset every 14th day, counted
from power up
Error
Software error restart 8th – 10th time. Restart 8th to 10th time
during the 14 day period. At the 11th time, the SW bank will be
blocked and not used anymore until a user ordered reset is
performed, or power is switched off/on
Critical
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
Alarm reset
CU
None
Alarm reset by the user. All alarms are reset. The cause of the
alarm will be re-evaluated and reported, if still active
Local bus
error
WBA #,
MCPA#
Error
Error when communicating on the bus. The CU has no contact
with the WBA, or MCPA PCBA, which is taken out of service
Main bkd w
backup
External
Error
Used to indicate that the mains is no longer available. WRH is
powered by external battery backup unit. Suggested remedy:
Check the mains power
Ceasing
The cause of the alarm has ceased
Err in ADconverter
Warning
The analog-to-digital converter on the CU PCBA does not give
reliable values
New unit
detected
None
Compared to the last power on, the CU has recognized at least
one additional hardware unit
Inst. unit lost
Error
Compared to the last power on, the CU lacks at least one
hardware unit
10
EEPROM
error
Error
EEP read or write fail. Data cannot be written or read from the
EEPROM on the CU PCBA. User parameters are stored in the
EEPROM
11
Log memory
fault
Error
Log memory fault. Indicates that the log memory on the CU PCBA
is faulty. The WRH will not work. Not available in all CU software
versions
4-2
CU
044-05251 Rev C
Nexus FT
Troubleshooting
Table 4-2 Alarm Troubleshooting (Continued)
ID
12
Alarm Text
High temp
Alarm Unit
CU
Alarm
Description
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
Warning
Suggested remedy: Check the reference source and the cables
15
CU battery
fault
Warning
CU RAM battery 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
CU
16
SW load error
CU
Error
Software load error. An error has occurred during a software load
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
17
Log cleared
CU
None
Log memory has been cleared. The check sum in the Events Log
memory is faulty. The log is cleared. Can be caused of a bad RAM
battery backup or low voltage to the RAM
18
RTC restarted
CU
None
The time is changed by the operator (logged to keep track of
changes made to the RTC)
Warning
Time reset to 1994-01-01. The RTC was unable to keep track of
the time and did a reset. Suggested remedy: Ensure jumper P3 on
the CU PCBA is mounted to charge the battery
Error
RTC does not operate. The CU has detected an error in the RTC
operation which makes the time unreliable. Suggested remedy:
Replace the CU PCBA
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
Config
External alarm input EA1 active more than 1 second
Ceasing
External alarm input EA1 no longer active
Config
External alarm input EA2 active more than 1 second
Ceasing
External alarm input EA2 no longer active
Config
External alarm input EA3 active more than 1 second
Ceasing
External alarm input EA3 no longer active
Config
External alarm input EA4 active more than 1 second
Ceasing
External alarm input EA4 no longer active
19
RTC error
20
Door open
alarm
21
22
23
24
External
alarm 1
External
alarm 2
External
alarm 3
External
alarm 4
044-05251 Rev C
External
External
External
External
External
4-3
Troubleshooting
Nexus FT
Table 4-2 Alarm Troubleshooting (Continued)
ID
Alarm Text
Alarm Unit
Alarm
Description
30
No modem
found
Remote ctrl
None
No modem found, that is no answer is returned on a poll string to
the modem
33
No
connection
Remote ctrl
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.
None
Invalid WRH password
34
Login failed
35
Remote
connection
Remote ctrl
None
Modem connection to OM-Online opened. Not logged on CU2.
Login Registry gives the same function and more information
about CU2
36
Modem init
failed
Remote ctrl
None
Initiation string to modem not OK. The initiation string sent to the
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
37
Remote
timeout
Remote ctrl
Warning
The time limit of 20 minutes is exceeded without extending the
timer. The modem connection is terminated by the WRH
38
PIN code
failed
Remote ctrl
Warning
The PIN code sent to MS is incorrect. To unlock the MS/SIM card,
the PUK code will probably be needed
Ceasing
The cause of the alarm has ceased
Warning
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 backup battery on the RCU or the FON PCBA does not work
properly. Suggested remedy: Check cables or replace battery
Ceasing
The cause of the alarm has ceased
Warning
Low antenna isolation. The antenna isolation is lower than the
gain set. Gain is reduced by 10dB – 13dB below the oscillation
point. Suggested remedy: Decrease gain or increase antenna
isolation
Error
Low antenna isolation at lowest gain. The gain has been reduced
as much as possible but the oscillation still remains. The amplifier
is turned off. Suggested remedy: Decrease gain or increase
antenna isolation
Ceasing
Normal operation again, that is no oscillation can be detected
13dB above the gain set
Error
If 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
39
40
42
48
4-4
No phone
detected
Battery fault
Antenna
isolation
Battery
backup fault
Remote ctrl
RCU, FON
charger
WBA #,
Channel #,
UL/DL
External
044-05251 Rev C
Nexus FT
Troubleshooting
Table 4-2 Alarm Troubleshooting (Continued)
ID
50
Alarm Text
Fiberoptical
error
Alarm Unit
FOT fiber
optics
Alarm
Description
Ceasing
The cause of the alarm has ceased
Configur
able
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
Ceasing
The cause of the alarm has ceased
70
Bad table
alarm
CU
Error
Requested table contains incorrect information (SW error)
71
Table not
found
CU
Error
Requested table not found in the database (SW or calibration
error)
72
Table
database
error
CU
Error
Table database not found (calibration error)
80
Antenna
SWR alarm
Donor
antenna
service
antenna
Error
Too low antenna return loss, caused either by cables, connectors,
or antenna problems.
90
91
92
FON power
alarm
FON
TxStable
alarm
FON RxLevel
alarm
FON RF
FON RF
FON
Suggested remedy: Check antenna and cables
Ceasing
The cause of the alarm has ceased
Error
A DC voltage on a FON PCBA is out of range. Suggested remedy:
Replace the FON PCBA.
Ceasing
The cause of the alarm has ceased
Error
Laser transmitter control loop voltage out of range. Suggested
remedy: Replace the FON PCBA
Ceasing
The cause of the alarm has ceased
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). Suggested remedy: Check optical
cables
Ceasing
The cause of the alarm has ceased
93
FON SPI
alarm
FON F2F
Error
The SPI bus connection to the RF modem does not work properly.
Suggested remedy: Replace the FON PCBA
245
Not In
Allowed Area
CU
None
WRH is moved from the operating area and the RF HW is
switched on or off
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 Chapter 3.
044-05251 Rev C
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
can result in high signal loss and/or no connectivity with that node.
Table 4-3 FON Replacement Procedure
Step
Action
Loosen all four locking screws on front of cabinet
Open WRH door and secure
Locate power connector on FON and remove connector from PCBA
Verify all cables on FON are labeled before disconnecting, then disconnect all cables.
Remove screws securing FON PCBA to FOU and remove PCBA
Replace FON PCBA in reverse order and apply power
Connect PC to OM Online port, login to FON and verify configuration and IP address.
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 C
Nexus FT
Field Replaceable Units
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
Loosen all four locking screws on front of cabinet
Open WRH door and secure
Disconnect main power plug from PSU(Location 1 shown in Figure 4-1)
Disconnect power cable bundle from PSU(Location 2 shown in Figure 4-1)
Loosen but do not remove screws securing PSU using a 5mm Allen key and remove PSU (Location 3
shown in Figure 4-1)
On new AC power supply, if used, set input voltage switch on PSU to correct input voltage -- 115 VAC
or 230 VAC (Location 4 shown in Figure 4-1)
On new DC power supply, if used, verify that the supply voltage is 24 VDC or 48 VDC as stated on
label on PSU (Location 5 shown in Figure 4-1)
Set new PSU to correct output supply voltage (27 VDC) by moving wire connection plug as illustrated
on label on PSU (Location 6 shown in Figure 4-1)
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 used in all situations. If only one connection is available on DIA PCBA, the second
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
(US) to positive (+) pole and blue wire (Europe) or white wire (US) to negative (-) pole (DC power
supply)
12
Close WRH door and secure with four locking screws on front of cabinet
044-05251 Rev C
4-7
Remote Control Unit (RCU)
Nexus FT
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
Loosen all four locking screws on front of cabinet
Open WRH door and secure
Disconnect main power plug from PSU
Verify all external cables connected to WRH are labeled before disconnecting, then disconnect all
external cables
Remove mounting screws from bottom legs of WRH and loosen mounting screws in top legs
Close and secure door
Lift the WRH off of mount hinges
Replace WRH in reverse order
Connect PC to OM Online port and verify configuration. For Fiber Optic installations, verify IP
address
10
Close WRH door 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
RCI if the P130 cable connector is disconnected. If a main power failure occurs, the unit has a battery with
enough capacity for sending a number of alarms.
16
V2
S->M
LED
P22
P28
DOOR
15
P26
P3
16
P27
P4
16
P2
P32
MODEM
W6B 10
P24
32
P31
PC
P21
PSU
ALLGON INNOVATION
SWEDEN
M105 R6
LNA
DOWN-LINK
V6
DC
DPX
10
P33
ALARM
AUX1
W5
MS
-20 dB
P25
P29
16
15
P23
LNA
UP-LINK
DPX
TEST
-30 dB
15
DC
16
P5
M->S
P34
V1
P14
X0B
16 1
15
16
P13
16
P6
X0A
16
P12
P36
16
P11
GND
TEST
-30 dB
MS
-20 dB
P35
PARKING
FOR W5
ANT
ANT
POWER SUPPLY UNIT
RCU
Figure 4-2 RCU in the WRH cabinet
4-8
044-05251 Rev C
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 +1-714-466-1000 to obtain this number, or FAX your
request to +1-714-466-5800. 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,
+1-714-466-100 or by e-mail at support@pwav.com for packing material.
044-05251 Rev C
4-9
Return For Service Procedures
Nexus FT
This page intentionally left blank
4-10
044-05251 Rev C
Chapter 5
Specifications
Introduction
This chapter provides specifications for the WRH.
Table 5-1: WRH Specifications
Electrical
Frequency band UL
788 to 805 MHz (CS, PS)
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)
1850 to 1915 MHz (PCS+G)
1920 to 1980 MHz (UMTS)
1710 to 1755 MHz (AWS 2100)
Frequency band DL
758 to 775 MHZ (CS, PS)
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)
1930 to 1995 MHz (PCS+G)
2110to 2170 MHz (UMTS)
2110 to 2155 MHz (AWS 2100)
Max absolute delay
<300 ns
Gain adjustment range (in 1 dB steps)
30 dB
Gain
Uplink
Downlink
Variation
Instantaneous bandwidth
044-05251 Rev C
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
17 MHz (CS, PS)
25 MHz (Cellular)
18 MHz (800 iDEN)
35 MHz (GSM 900)
5 MHz (900 iDEN)
75 MHz (GSM 1800
60 MHz (PCS)
65 MHz (PCS+G)
60 MHz (UMTS)
45 MHz (AWS)
5-1
Introduction
Nexus FT
Table 5-1: WRH Specifications (Continued)
Uplink AGC limit
0 dBm at FON input
Downlink AGC limit
43 dBm at antenna port
Return Loss
11 dB
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
20 A for AC voltage
40 A for DC voltage
Power consumption
210 W typical, 300 W max (Single band)
420 W typical, 600 W max (Dual band)
Impedance
Input
Output
Not Applicable - Optical input
50 Ω
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)
465 x 530 x 310 mm (18.3 x 20.9 x 12.3 in) incl hinges (high cover)
Weight
<25 kg (55 lbs) low cover
<44 kg (96 lbs) high 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
5-2
044-05251 Rev C
Nexus FT
Introduction
Table 5-1: WRH Specifications (Continued)
Fiber Optic Node (FON)
Bandwidth @ 3dB
800 – 2200 MHz
Power Consumption, total
<5 W
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
+36dBm
+3 or 0dBm
0-20dB
Receive
Max optic power input
RF attenuation settable by SW in 1dB steps
Alarm threshold level, settable warning
Alarm threshold level, settable error
+5dBm
4-24dB
0-40dBm
0-40dBm
044-05251 Rev C
5-3
Introduction
Nexus FT
This page intentionally left blank
5-4
044-05251 Rev C
Appendix A
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
attenuators. The signal exits the WBA and enters the MCPA where it is amplified and fed to the DPX. The
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.
WBA
MCPA
850 MHz
TX0/RX0
DL
DPX
FOU
To/From
OCM or
BMU
DX
WDM
FON
UL
LNA
WBA
DX
MCPA
DL
DPX
RCU
1900 MHz
TX0/RX0
UL
LNA
PSU
RCI
CU
ALI
To
External
alarms
Figure A-1 WRH Block Diagram - Non-Diversity
044-05251 Rev C
A-1
Diversity
Nexus FT
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.
WBA
MCPA
DL
DPX
FOU
850 MHz
TX0/RX0
UL
LNA
FON
850 MHz
RX1
UL
DX
DPX
LNA
WBA
To/From
OCM or
BMU
DX
WDM
FON
MCPA
DL
DPX
DX
1900 MHz
TX0/RX0
UL
LNA
RCU
UL
LNA
PSU
1900 MHz
RX1
RCI
CU
DPX
ALI
To
External
alarms
Figure A-2 WRH Block Diagram - Diversity
A-2
044-05251 Rev C
Nexus FT
044-05251 Rev C
Diversity
A-3


---

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