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 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 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 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) 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 the 850 MHz is 34 MHz. The output impedance of the unit referenced in this document is 50 Ohms.
The -20dB bandwidth at IDEN 800MHz band is 26 MHz.
The input signal is optical so input impedance requirements are not applicable.
European Requirements
The Powerwave WRH-V 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
High Power Wideband Radio Head (WRH-V)Warnings, Cautions, and Notes
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 Ai
Revision RecordHigh Power Wideband Radio Head (WRH-V)
High Power Wideband Radio Head (WRH-V)Abbreviations
Abbreviations
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 Interface
FONFiber Optic Node
FORFiber Optic Repeater
FOUFiber Optic Unit
GSMGlobal System for Mobile communication
HWHardware
ICNIRPInternational Commission on Non-Ionizing Radiation Protection
LEDLight Emitting Diode
LNALow Noise Amplifier
MCPAMulti-Carrier Power Amplifier
MSMobile Station, MS antenna = towards the mobile station
044-05251 Rev Avii
AbbreviationsHigh Power Wideband Radio Head (WRH-V)
MSCMobile Switching Center
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
viii044-05251 Rev A
Chapter 1
Product Description
Introduction
This manual contains information and procedures for installation, operation, and maintenance of a High Power
Wideband Radio Head (WRH-V). 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.
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 WRH-Vs 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-V 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-V 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-V 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 technician.
❑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
SafetyHigh Power Wideband Radio Head (WRH-V)
❑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-V 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-V 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
r = Distance between antenna and human in meters
S= P/(4
πr
2
)
Electrostatic Discharge (ESD)
ESD can severly damage essential parts of the equipment if not handled carefully. Parts on
printed circuit board assemblies (PCBA) as well as other parts in the equipment are sensitive
to ESD. Never touch the PCBA or uninsulated conductor surfaces unless absolutely
necessary.
If you must handle the PCBAs or uninsulated conductor surfaces, use ESD protective
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
High Power Wideband Radio Head (WRH-V)Overview
Overview
Figure 1-1 Powerwave Wideband Radio Head (WRH)
Powerwave WRH-Vs 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 the WRH-V are made with Ntype or 7/16" male connectors.
WRH-Vs 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 WRH-Vs
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.
WRH-Vs 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 WRHVs available.
The WRH-V is 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
The WRH-V 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-V 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-V or an independent WRH-V unit. A WRH-V
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.
044-05251 Rev A1-3
OverviewHigh Power Wideband Radio Head (WRH-V)
Sub Unit Overview
A number of amplifier PCBAs are individually shielded and located under a metal cover inside the WRH-V. This
cover can be opened outward for access. These amplifier PCBAs are of different types depending on the
supported system. All of the WRH-Vs are built up with a number of sub units which are described in the
following sections.
Wideband Amplifier PCBA (WBA)
WRH-Vs 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.
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.
P11P12P13V1P14P22P29P34V2P36
XOB
XOA
P26
P28
P23
V6B
P27
1
1
M
>
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
P32
1
V2
1
P6
c
b
a
1
P5
c
b
a
1
P4
16
P12P13
16
16
16
P4P5P6P2P3 P31 P21 P35 P33
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
Figure 1-2 DIA PCBA
Control Unit PCBA (CU)
Figure 1-3 shows the CU, which is the core microprocessor controller in the WRH-V 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.
1-4044-05251 Rev A
High Power Wideband Radio Head (WRH-V)Overview
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-V is equipped with a unit 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 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 WRH. 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 WRH-V
044-05251 Rev A1-5
OverviewHigh Power Wideband Radio Head (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 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 WRH-V.
Remote Control Unit (RCU)
The RCU is an optional communication unit for remote control of WRH-Vs 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.
Sub Unit Locations
The MCPA is located at positions 3 and 4 in the cabinet. A WRH-V is equipped for one band in the cabinet and,
if required, an additional band in a high cover. PCBA positions are illustrated in Figure 1-6 and a block diagram
is located in Appendix A.
LNA - UL
1234
WBA
DL/UL
DPX
MCPA DL
FONFON
FOU
CUALI/RCI
PSU
(RCU)
5678
WBA
DL/UL
DPX
MCPA DL
FOU
CUALI/RCI
PSU
(RCU)
Figure 1-6 WRH-V Sub Unit Locations
1-6044-05251 Rev A
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