Powerwave Technologies and the Powerwave logo are registered trademarks.
Powerwave T echnologies Inc. reserves the right to make changes to the documentation and equipment, includ-
ing but not limited to component substitution and circuitry changes. Changes that impact this document may
subsequently be 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 standard WRH is for single carrier operation; for a WRH-V it 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 mutiple carriers. For situations above that, 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. Input power is rated at 115/230VAC, 50/60Hz, and should be protected with a 20 A breaker. Power
strips should, at a minimum, conform to this requirement to prevent equipment damage and possible overload.
Federal Communications Commission (FCC)
This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to
part 15 of the FCC Rules. 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 Requirement
All Powerwave apparatus introduced on the Canadian market meet all requirements of the Canadian Interference-Causing Equipment Regulations. The -20dB bandwidth at 1900 MHz band is 80 MHz. The -20dB bandwidth at the 850 MHz is 34 MHz.
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
Wideband Radio HeadRevision Record
Revision Record
Revision Lette r Date of ChangeReason for Change
3AAugust 2005Original VD203 66
AMarch 2007Document number changed to 044-05251 and manual updated
The following list of abbreviations are used throughout this manual, the software, and the repeater:
AGCAutomatic Gain Control
ALIAlarm Interface
AMPSAdvanced Mobile Phone Service
BABooster Amplifier
BeOBeryllium Oxide
BMUBase Station Master Unit
BSBase Station, BS antenna = towards the base station
BSABand Selective Amplifier
BSelBand Selective
BTSBase Transceiver Station
CDMACode Division Multiple Access
CHEChannel Amplifier for GSM and EDGE
CMBCombiner
CSAChannel Selective Amplifier
CSelChannel Selective
CUControl Unit
CWContinuous Wave
DAMPSDigital Advanced Mobile Phone Service
DCDirectional Coupler
DCSDigital Communication System (same as PCN)
DIADistribution Interface
DLDownlink signal direction (from base station via repeater to mobile station)
DPXDuplex filter
EDGEEnhanced Data rates for GSM Evolution
EEPROMElectrical Erasable Programmable Read Only Memory
EGSMExtended Global System for Mobile communication
ESDElectrostatic Discharge
ETACSExtended Total Access Communication System
ETSIEuropean Telecommunications Standard Institute
FLIFiber Link Int erface
FONFiber Optic Node
FORFiber Optic Repeater
FOUFiber Optic Unit
GSMGlobal System for Mobile communication
HWHardware
ICNIRPInternational Commission on Non-Ionizing Radiation Protection
LEDLight Emi tting Diod e
LNALow Noise Amplifier
MCPAMulti-Carrier Power Amplifier
MSMobile Station, MS antenna = towards the mobile station
MSCMobile Switching Center
044-05251 Rev Av
AbbreviationsWideband Radio Head
NEMANational Electrical Manufacturers Association
NiCdNickel Cadmium
NMTNordic Mobile Telephone system
NOCNetwork Operations Center
OCMOptical Converter Module
OMSOperation and Maintenance System
PCNPersonal Communication Network (same as DCS)
PCSPersonal Communication System
POIPoint of Interconnect
PSMPower Supply Module
PTFEPolytetrafluoro Ethylene (Teflon)
R2RRepeater-to-Repeater
RCIRemote Control Interface
RCURemote Control Unit
RCMRF Converter Module
RFRadio Frequency
RIARepeater-to-Repeater Adapter
RMURemote Master Unit
RSSIReceived Signal Strength Indication
RTCReal Time Clock
SWSoftware
TACSTotal Access Communication System
TDMATime Division Multiple Access
ULUplink signal direction (from mobile station via repeater to base station)
UPSUninterruptible Power Supply
WHOWorld Health Organization
WLIWire Link Interface
WRHWideband Radio Head
vi044-05251 Rev A
Introduction
This manual contains information and procedures for installation, operation, and maintenance of the
Wideband Radio Head (WRH). The manual is organized into chapters as follows.
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.
Chapter 1
Product Description
Safety
It is necessary that any personnel involved in installation, operation or service of units included in a
Powerwave Distributed Antenna System (DAS) understand and follow the below points.
•Powerwave WRHs 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 WRH 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.
•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. Authorized service personnel only are
allowed to service units while the mains is connected.
•The WRH cover must be secured in opened position, for instance by tying it up.
Otherwise, the cover can be closed by the wind and cause your fingers getting pinched
or your head being hit.
•When working on a WRH on high ground, for instance on a mast or pole, be careful not
to drop parts or the entire WRH. Falling parts can cause serious personal injury.
•All RF transmitting units, including WRHs, 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 an Powerwave
authorized service techni ci an .
•NiCd batteries are mounted on the FON PCBA. These batteries contain environmental
poisonous substances. If replaced, the old batteries should be taken care of as stated
in the local prescriptions.
044-05251 Rev A1-1
SafetyWideband Radio Head
P
--
•The FON unit contains a class IIIb laser transmitter that emits 2 – 4mW invisible laser
radiation during operation. Avoid direct exposure from unconnected laser transmitter or
fiber cord.
•Do not power up the FON unit if a fiber cable is not attached to the fiber output UL port,
neither if a fiber cable is attached to the port but unattached in the other end.
•Never look in the end of a fiber cable. The 1310nm and 1550nm laser light is not
visible, so no signal identification can be made anyway. Use always an instrument,
such as a power meter to detect signaling.
•Never use any kind of magnifying devices that can focus the laser light to an
unaided eye.
Human Exposure of 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 WRH 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 WRH 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:
For antennas larger than 20cm the maximum radiation power can be calculated by using the following
formula:
S = Radiation power in W/m²
P = Output power in W
2
r = Distance between antenna and human in meters
S
------------------
=
4 π r
××
Electrost at ic 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.
1-2044-05251 Rev A
Wideband Radio HeadOverview
Overview
Figure 1-1 Powerwave Wideband Radio Head (WRH)
Powerwave WRHs work as bi-directional on-frequency amplifiers used to fill out uncovered areas in
wireless mobile systems such as base station fringe areas, tunnels, convention centers, airports and
business buildings. It receives, amplifies and transmits signals to/from a base transceiver station (BTS)
to/from mobile stations (MS) with both directions being served simultaneously. Connections to the
WRH are made with N-type or 7/16" male connectors.
WRHs 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,
channel number and power levels are set using a PC running Powerwave OM-Online software which
can communicate with the WRHs 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.
WRHs 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 WRH’s available.
WRH
The Standard WRH is used for analog or digital systems such as GSM, T ACS, ETACS, AMPS,
DAMPS, CDMA and WCDMA. It can be equipped with two bands in the cabinet and two bands in a high
cover. It has a fiber optic donor port and an RF port for a service antenna (or RF cable) and is designed
to be connected to a BTS via a BMU or OCM.
A booster option is available for the standard WRH to provide greater output power. This unit is
equipped with a 6dB Booster Amplifier (BA) in the downlink path. The BA reduces the number of bands
with one band per BA used in the cabinet and an additional one band if a high cover is used. The BA
is located in the cabinet and is supplied from the existing PSU. For two bands, a high cover is used.
WRH-V
The WRH-V is designed to provide a higher 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.
For two bands, a high cover is used.
044-05251 Rev A1-3
OverviewWideband Radio Head
Chassis Design
The WRH is housed in a cast aluminium waterproof chassis, class NEMA4 / IP65 approved for outdoor
use but is also suited for indoor installations. The chassis consists of a cabinet and a cover attached
with hinges. The cabinet contains the WRH circuitry . The cover comes as either a low or high version.
The high cover can be used as an empty cover or be equipped as a part of the WRH or an independent
WRH unit. A WRH with a high cover that is equipped as two independent units can, for example, be
equipped for channel selective operation in the cabinet and band selective operation in the cover.
Inside the WRH, 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. Functionally , all WRHs are built up with a number of sub units. These are listed and described
in the following sections.
Sub Unit Overview
A number of amplifier PCBAs are individually shielded and located under a metal cover inside the
WRH. This cover can be opened outward for access. These amplifier PCBAs are of different types
depending on the supported system. All of the WRHs are built up with a number of sub units which are
described in the following sections.
Wideband Amplifier PCBA (WBA)
WRHs 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 are assigned for a WBA.
Power Amplifier PCBA (PA)
The PA is used to amplify the output signal from the WBA in the dowlink direction and reside in
positions 2 and 4.
Multi-Carrier Power Amplifier PCBA (MCPA)
Installed in the WRH-V only, the MCP A 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.
Booster Amplifier PCBA (BA)
A WRH can be modified with a BA on the DL path to increase the output power by 6dB (typically)
depending on system configuration. This BA can operate with a maximum of 2 channels and occupies
position 3 in the cabinet and position 7 in a high cover. It also requires an extra heat sink element on
the outside of the cabinet or high cover. Some configurations use the existing PSU while others require
a second PSU.
Control Unit PCBA (CU)
The CU is the core microprocessor controller in the WRH and is connected to P2 on the DIA. It 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, battery powered real-time clock, and MAC identity circuit. The CU supervises and
controls operational parameters such as gain control and channel handling, alarms, event log,
password and 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, or from OMS. It is located in the lower
right part of the shielded DIA frame.
1-4044-05251 Rev A
Wideband Radio HeadOverview
Figure 1-2 CU PCBA
Distribution PCBA (DIA)
The DIA is the core distribution PCBA on which all other PCBAs and units connect to in the cabinet with
the exception of the PA. A shielded metal frame on the DIA provides the mounting location for the CU,
ALI and RCIs, if used.
P11P12P13V1P14P22P29P34V2P36
XOB
XOA
P26
P28
P23
V6B
P27
1
1
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S
15 16
2
1
UP-LINK
8
1
X
U
A
W5
1
2
16
P11
5
6
3
2
P
1
X0A
P34
X0B
89
3
P28
DOOR
1
8
15
P26
1
6
P23
LNA
9
P32
MODEM
P27
W6B 10
9
5
ALLGON INNOVATION
SWEDEN M105 R6
PARKING
FOR W5
c
b
a
1
P33
ALARM
1
V2
1
P6
c
b
a
1
P5
c
b
a
1
P4
16
P12P13
16
16
16
1
1P232
c
b
a
16
1
b
a
1
16P3
1
V1
16
P14
LED
P22
4
1
1
S
P25
>
-
6
M
15
9
15216
1
P25
P29
6
P31
PC
5
10
P21
PSU
1
6
5
1
P35
4
8
P24
2
P24
1
1
LNA
DOWN-LINK
6V6
V6
7
GND
GND
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.
All coaxial connectors are SMA-type. Signals from the DPX output are fed to the LNA input connector
IN. OUT1 and OUT2 outputs feed the WBAs of the same signal direction. The signal level in these
connectors are +20dB referenced to the antenna input. Another output, OUT LOW, is an expansion
output for an additional LNA if the WRH is equipped in the cover part of the chassis. The gain to this
connector is +2dB. The +7V input is used for +7V supply from the DIA PCBA and ATT is a control signal
for a controllable attenuator in the LNA.
Duplex Filter (DPX)
DPXs are located on the metal cover sheet in the upper part of the cabinet. Service and donor DPXs
are identical.
P32
P4P5P6P2P3 P31 P21 P35 P33
Figure 1-3 DIA PCBA
Figure 1-4 LNA
044-05251 Rev A1-5
OverviewWideband Radio Head
Fiber Optic Unit (FOU)
The FOU is a metal plate mounted on top of the cover plate in the upper part of the WRH. The FON and
fiber optic connectors are mounted on the FOU. It can also be configured with combiners, splitters, and
WDMs to obtain a desired combination of several branches with double or single fiber.
Figure 1-5 FOU in WRH-V
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 has coaxial ports for DL and UL RF signals
and two optical ports for DL and UL fiber connections.
Power Supply Unit (PSU)
A PSU is located in the lower center of the cabinet and, if configured, the high cover.
Remote Control Unit (RCU)
The RCU is an optional communication unit for remote control of WRHs via PSTN or RF modems. RCU
types and details are described in Chapter 4.
Alarm Interface PCBA (ALI) and Remote Control Interface PCBA (RCI)
The ALI handles alarms and alarm communication. It is replace with an RCI if an RCU is used and
provides an interface between the CU and an RCU for remote communication via modem. The RCI
also handles alarms and alarm communication. Either unit is located in the lower left part of the
shielded DIA frame.
1-6044-05251 Rev A
Wideband Radio HeadOverview
Sub Unit Locations
WRH
WBA
DL/UL
FON
CUALI/RCI
LNA - DL
PA
DL
5678
WBA
DL/UL
DPX
PA
DL
WBA
DL/UL
FON
FOU
PSU
(RCU)
PA
DL
LNA - UL
1234
WBA
DL/UL
DPX
PA
DL
FOU
PSU
(RCU)
Figure 1-6 Standard WRH Sub Unit Locations
For single wideband operation the cabinet is equipped with a WBA in position 1 for both DL and UL
paths and an associated P A in position 2 for DL signal amplification. For dual band operation another
set of PCBAs can be used in positions 3 and 4. The WRH has a FON for uplink transmission via fiber
optics. A high cover can be equipped as well providing up to four bands. PCBA positions are illustrated
in the Figure 1-6 and a block diagram is located in Appendix A.
The booster option boosts the output DL signal from the PA. The BA is located at position 3 in the
cabinet. A booster can only be equipped for one band in the cabinet and an additional band in a high
cover. PCBA positions are illustrated in the Figure 1-7 and a block diagram is located in Appendix A.
044-05251 Rev A1-7
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