Axell Wireless MBF23082319 MBF2001A Dual Band Optical Repeater User Manual Manual

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MBF-20 AMERICAS REMOTE
PRODUCT DESCRIPTION AND USER’S MANUAL
MBF-20 Americas Multiband Fibre-Fed
Remote
Product Description and User’s Manual
Document P/N 00068UM Rev. 2.4
This document is valid for the following remote models
Product
Part Number
IC ID
FCC ID
MBF-2308-2319-M-1510
MBF-2308-2319-M-1530
MBF-2308-2319-M-1550
MBF-2308-2319-M-1570
MBF-2308-2319-M-1590
MBF2001
MBF2002
MBF2003
MBF2004
MBF2005
8749A-MBF23082319
NEOMBF23082319
MBF-2307-2317-M 1510
MBF-2307-2317-M-1530
MBF-2307-2317-M-1550
MBF-2307-2317-M-1570
MBF2006
MBF2007
MBF2008
MBF2009
8749A-MBF23072317
NEOMBF23072317
MBF-20 AMERICAS REMOTE
PRODUCT DESCRIPTION AND USER’S MANUAL
Copyright © 2014 Axell Wireless Ltd
All rights reserved.
No part of this document may be copied, distributed, transmitted, transcribed, stored in a retrieval system, or
translated into any human or computer language without the prior written permission of Axell Wireless Ltd.
The manufacturer has made every effort to ensure that the instructions contained in this document are
adequate and free of errors and omissions. The manufacturer will, if necessary, explain issues which may not
be covered by this document. The manufacturer's liability for any errors in the document is limited to the
correction of errors and the aforementioned advisory services.
This document has been prepared to be used by professional and properly trained personnel, and the
customer assumes full responsibility when using them. The manufacturer welcomes customer comments as
part of the process of continual development and improvement of the documentation in the best way possible
from the user's viewpoint. Please submit your comments to the nearest Axell Wireless sales representative.
Contact Information
Headquarters
Axell Wireless
Aerial House, Asheridge Road,
Chesham, Buckinghamshire HP5 2QD
United Kingdom
Tel: +44 1494 777000
Fax: +44 1494 777002
Commercial inquiries
info@axellwireless.com
Web site
www.axellwireless.com
Support issues
support@axellwireless.com
Technical Support Line, English
speaking
+44 1494 777 747
Contact information for Axell Wireless offices in other countries can be found on our web
site, www.axellwireless.com
II
User Manual Doc No. 00068UM Rev. 2.4
© Axell Wireless Ltd
MBF-20 AMERICAS REMOTE
PRODUCT DESCRIPTION AND USER’S MANUAL
About This Manual
This Product Manual provides the following information:
•
Description of the MBF-20 Remote
•
Procedures for setup, configuration and checking the proper operation of the MBF-20
•
Maintenance and troubleshooting procedures
Intended Audience
This Product Manual is intended for experienced technicians and engineers. It is
assumed that the customers installing, operating, and maintaining Axell Wireless MiniRemotes are familiar with the basic functionality of Remotes.
Notice
Confidential - Authorized Customer Use
This document may be used in its complete form only and is solely for the use of Axell
Wireless employees and authorized Axell Wireless channels or customers. The material
herein is proprietary to Axell Wireless. Any unauthorized reproduction, use or disclosure
of any part thereof is strictly prohibited.
All trademarks and registered trademarks are the property of their respective owners.
Disclaimer of Liability
Contents herein are current as of the date of publication. Axell Wireless reserves the
right to change the contents without prior notice. The information furnished by Axell
Wireless in this document is believed to be accurate and reliable. However, Axell
Wireless assumes no responsibility for its use. In no event shall Axell Wireless be liable
for any damage resulting from loss of data, loss of use, or loss of profits and Axell
Wireless further disclaims any and all liability for indirect, incidental, special,
consequential or other similes damages. This disclaimer of liability applies to all
products, publications and services during and after the warranty period.
Guarantees
•
All antennas must be installed with lightning protection. Damage to power
modules, as a result of lightning are not covered by the warranty.
•
Antennas must be connected before switching on AC or DC power. Switching
power on prior to the connection of antenna cables is regarded as faulty installation
procedure and therefore not covered by the Axell Wireless warranty.
Exclusive Remedies
The remedies provided herein are the Buyer’s sole and exclusive remedies. Axell
Wireless shall not be viable for any direct, incidental, or consequential damages,
whether based on contract, tort, or any legal theory.
© Axell Wireless Ltd
User Manual Doc No. 00068UM Rev. 2.4
III
MBF-20 AMERICAS REMOTE
PRODUCT DESCRIPTION AND USER’S MANUAL
FCC Part 20 Warning Statement
WARNING: This is NOT a CONSUMER device. It is designed for installation by FCC
LICENCEES and QUALIFIED INSTALLERS. You must have an FCC LICENCE or
express consent of an FCC Licensee to operate this device.
Unauthorized use may result in significant forfeiture penalties, including penalties in
excess of $100,000 for each continuing violation.
FCC Part 15
This device complies with part 15 of the FCC Rules. Operation is subject to the following
two conditions:
1. This device may not cause harmful interference, and
2. This device must accept any interference received, including interference that may
cause undesired operation.
If not installed and used in accordance with the instructions, this equipment generates,
uses and can radiate radio frequency energy. However, there is no guarantee that
interference will not occur in a particular installation. If this equipment does cause
harmful interference to RF reception, which can be determined by turning the equipment
off and on, the user is encouraged to try to correct the interference by one or more of
the following measures:
•
Increase the separation between the equipment and receiver.
•
Connect the equipment into an outlet on a circuit different from that to which the
receiver is connected.
Repeaters must be used ONLY for in-building applications
One must be aware that FCC regulation mandate that these repeaters are to be used
only for in-building applications and thus feed passive or active DAS (Distributed
Antenna Systems) accordingly.
Unauthorized Changes to Equipment
Changes or Modifications not expressly approved by the manufacturer responsible for
compliance could void the user’s authority to operate the equipment
FCC RF Exposure Limits
This unit complies with FCC RF exposure limits for an uncontrolled environment. This
equipment must be installed and operated with a minimum distance of 32 cm between
the radiator and any person’s body.
Antenna Installation
Installation of an antenna must comply with the FCC RF exposure requirements. The
antenna used for this transmitter must be mounted on an indoor permanent structure.
The maximum antenna gain for indoor operation is 13 dBi. Antennas having a gain
greater than these are strictly prohibited for use with this device. In indoor applications
the antenna must be installed at a minimum separation distance of 32 cm from all
nearby persons.
IV
User Manual Doc No. 00068UM Rev. 2.4
© Axell Wireless Ltd
MBF-20 AMERICAS REMOTE
PRODUCT DESCRIPTION AND USER’S MANUAL
Compliance with IC
Under Industry Canada regulations, this radio transmitter may only operate using an
antenna of a type and maximum (or lesser) gain approved for the transmitter by
Industry Canada. To reduce potential radio interference to other users, the antenna type
and its gain should be so chosen that the equivalent isotropically radiated power
(e.i.r.p.) is not more than that necessary for successful communication.
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 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.
Conformément à la réglementation d'Industrie Canada, le présent émetteur radio peut
fonctionner avec une antenne d'un type et d'un gain maximal (ou inférieur) approuvé
pour l'émetteur par Industrie Canada. Dans le but de réduire les risques de brouillage
radioélectrique à l'intention des autres utilisateurs, il faut choisir le type d'antenne et
son gain de sorte que la puissance isotrope rayonnée équivalente (p.i.r.e.) ne dépasse
pas l'intensité nécessaire à l'établissement d'une communication satisfaisante.
La puissance de sortie nominale indiquée par le fabricant pour cet appareil concerne son
fonctionnement avec porteuse unique. Pour des appareils avec porteuses multiples, on
doit réduire la valeur nominale de 3.5 dB, surtout si le signal de sortie est retransmis et
qu'il peut causer du brouillage aux utilisateurs de bandes adjacentes. Une telle réduction
doit porter sur la puissance d'entrée ou sur le gain, et ne doit pas se faire au moyen
d'un atténuateur raccordé à la sortie du dispositif.
Cet appareil est conforme aux limitations de la norme IC RSS-102 concernant
l’exposition aux radiations dans un environnement non contrôlé. Cet appareil doit être
installé et utilisé avec une distance minimale de 32 cm entre l’antenne et le corps de
l’utilisateur.
© Axell Wireless Ltd
User Manual Doc No. 00068UM Rev. 2.4
MBF-20 AMERICAS REMOTE
PRODUCT DESCRIPTION AND USER’S MANUAL
General Safety Warnings Concerning Use of This System
Always observe standard safety
maintenance of this product.
Caution labels!
Danger: Electrical
Shock
Caution: Safety to
personnel
Caution: RF Exposure
VI
precautions
during
installation,
operation
and
Throughout this manual, there are "Caution" warnings.
"Caution" calls attention to a procedure or practice, which, if
ignored, may result in injury or damage to the system,
system component or even the user. Do not perform any
procedure preceded by a "Caution" until the described
conditions are fully understood and met.
To prevent electrical shock when installing or modifying the
system power wiring, disconnect the wiring at the power
source before working with un insulated wires or terminals.
Before installing or replacing any of the equipment, the
entire manual should be read and understood.
The user needs to supply the appropriate AC or DC power to
the repeater. Incorrect power settings can damage the
repeater and may cause injury to the user.
Please be aware that the equipment may, during certain
conditions become very warm and can cause minor injuries if
handled without any protection, such as gloves.
RF radiation, arising from transmitter outputs connected to
AWL’s equipment, must be considered a safety hazard.
This condition might only occur in the event of cable
disconnection, or because a ‘spare’ output has been left unterminated. Either of these conditions would impair the
system’s efficiency. No investigation should be carried out
until all RF power sources have been removed. This would
always be a wise precaution, despite the severe mismatch
between the impedance of an N type connector at 50 Ohm,
and that of free space at 377 Ohm, that would severely
compromise the efficient radiation of RF power. Radio
frequency burns could also be a hazard, if any RF power
carrying components were to be carelessly touched!
Antenna positions should be chosen to comply with
requirements (both local & statutory) regarding exposure of
personnel to RF radiation. When connected to an antenna,
the unit is capable of producing RF field strengths, which may
exceed guideline safe values especially if used with antennas
having appreciable gain. In this regard the use of directional
antennas with backscreens and a strict site rule that
personnel must remain behind the screen while the RF power
is on, is strongly recommended.
Where the equipment is used near power lines or in
association with temporary masts not having lightning
protection, the use of a safety earth connected to the caseearthing bolt is strongly advised.
User Manual Doc No. 00068UM Rev. 2.4
© Axell Wireless Ltd
MBF-20 AMERICAS REMOTE
PRODUCT DESCRIPTION AND USER’S MANUAL
Caution: Safety to
equipment
Warning: Restricted
Access Location
Attention: Electrostatic
Sensitivity
When installing, replacing or using this product, observe all
safety precautions during handling and operation. Failure to
comply with the following general safety precautions and
with specific precautions described elsewhere in this manual
violates the safety standards of the design, manufacture, and
intended use of this product.
Changes or modifications not expressly approved by the
party responsible for compliance could void the user’s
authority to operate the equipment.
Axell Wireless assumes no liability for the customer's failure
to comply with these precautions. This entire manual should
be read and understood before operating or maintaining the
repeater.
Access to the Axell unit installation location is restricted to
SERVICE PERSONNEL and to USERS who have been
instructed on the restrictions and the required precautions to
be taken.
Observe electrostatic precautionary procedures.
ESD = Electrostatic Discharge Sensitive Device.
Static electricity can be conducted to the semiconductor chip
from the centre pin of the RF input connector, and through
the AC connector pins. When unpacking and otherwise
handling the repeater, follow ESD precautionary procedures
including use of grounded wrist straps, grounded workbench
surfaces, and grounded floor mats.
The repeaters described in this manual are equipped with
class 1 lasers, as per definition in EN 60825-1
Caution - Un-terminated optical receptacles may emit laser
radiation. Exercise caution as follows:
• Do not stare into beam or view with optical instruments.
Optical transmitters in the fibre optic converter can send
out high energy invisible laser radiation. There is a risk
for permanent damage to the eye.
Caution: Class 1 Laser
•
Always use protective cover on all cables and connectors
which are not connected.
•
Never look directly into a fibre cable or a connector.
•
Consider that a fibre can carry transmission in both
directions.
•
During handling of laser cables or connections, ensure
that the source is switched off.
Regard all open connectors with respect and direct them in a
safe direction and never towards a reflecting surface.
Reflected laser radiation should be regarded as equally
hazardous as direct radiation.
© Axell Wireless Ltd
User Manual Doc No. 00068UM Rev. 2.4
VII
MBF-20 AMERICAS REMOTE
PRODUCT DESCRIPTION AND USER’S MANUAL
Table of Contents
Introduction ................................................................................................................. 1
1.1 Features and Capabilities .................................................................................................... 2
1.2 Interfaces .............................................................................................................................. 3
1.3 Power Supply........................................................................................................................ 4
Installation Requirements .......................................................................................... 5
2.1 MBF-20 Installation Requirements ..................................................................................... 5
2.1.1 Safety Guidelines ...................................................................................................... 5
2.1.2 Criteria for Remote Installation Location ................................................................... 5
2.1.3 RF Cable Installation Guidelines ............................................................................... 6
2.1.4 F/O Cable Installation Guidelines .............................................................................. 6
2.2 Service Antenna Requirements (English) ......................................................................... 6
2.2.1 Required Antenna Information .................................................................................. 6
2.2.2 Recommended Antennas .......................................................................................... 6
2.2.3 Service Antenna Installation Criteria ......................................................................... 7
2.3 Service Antenna Requirements (French) .......................................................................... 7
2.3.1 Antenne Informations Requises ................................................................................ 7
2.3.2 FCC et IC conformité de l'installation intérieure ........................................................ 8
2.3.3 Critères d'installation de l'antenne d'installation d'intérieur ....................................... 8
MBF-20 Installation ..................................................................................................... 9
3.1 Dual-band Installation .......................................................................................................... 9
3.1.1 Overview .................................................................................................................... 9
3.1.2 Required Tools and Materials ................................................................................... 9
3.1.3 MBF-20 Dual-band Kit ............................................................................................. 10
3.1.4 Mounting Remote .................................................................................................... 11
3.1.5 Antenna Connections .............................................................................................. 13
3.1.6 Power Up ................................................................................................................. 14
3.1.7 Fibre Optic Connections .......................................................................................... 14
3.1.8 MBF-20 Local Optical Link Adjustment (N/A) .......................................................... 15
3.1.9 What Next ................................................................................................................ 15
3.2 Quad-Band Installation ...................................................................................................... 16
MBF-20 Setup and Commissioning ......................................................................... 17
4.1 Open a Session to the MBF-20 via the OMU II ................................................................ 17
4.2 Optical Loss Adjustment (OLA) ........................................................................................ 18
4.3 MBF-20 RF Balancing ........................................................................................................ 19
4.3.1 Manual MBF-20 RF Balancing ................................................................................ 19
4.3.2 Automatic MBF-20 RF Balancing ............................................................................ 21
4.4 What Next? .......................................................................................................................... 22
4.4.1 General Area ........................................................................................................... 24
4.4.2 Detailed view of the MBF-20 ................................................................................... 25
Appendix A: US/Canada Specifications ......................................................................... 26
Appendix B: Optic Fibre Cables Connections ............................................................... 27
Appendix C: F/O Cleaning Procedure ............................................................................ 30
Appendix D: LED Troubleshooting ................................................................................. 34
VIII
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© Axell Wireless Ltd
MBF-20 AMERICAS REMOTE
PRODUCT DESCRIPTION AND USER’S MANUAL
Introduction
Axell’s MBF-20 Multi-Band Fiber Optic system provides a cost-effective, scalable indoor
solution for single or multi operator use. Signals are coupled off from a nearby base
station or off-air repeater to the OMU and then distributed via fiber to one or several
MBF-20 remote units. These MBF-20 remote units can be installed up to 2 km from the
base station site, offering great flexibility when providing RF coverage in areas where off
air transmission is not a preferable solution.
A distributed antenna system can be used to distribute the signal throughout the area to
be covered. A single F/O cable is used to connect the MBF-20 remote units to the OMU.
Different colors (wavelengths) are used in order to combine the uplink of different MBF20 remote units in a very cost effective way.
The MBF-20 is supplied in two physical configurations:
•
Dual-band – consists of a single (Master) unit supporting two bands
•
Quad-band – consists of two cascaded units: Master and Expansion (Slave) units,
where the Expansion unit can be assembled by the user onto an existing Master
MBF-20 unit (see section 3.2).
The MBF-20 is installed in conjunction with Axell Wireless Optical Management Unit
(OMU II). The OMU II provides the head-end RF to optic conversion required to
transport the services over fibre to the MBF-20 units. Up to 24 MBF-20 can be fed and
managed from a single OMU II system.
MBF-20 commissioning is designed for plug-and-play simplicity: just mount, connect
antennas, power and fibre. The unit is automatically discovered and commissioned on
the OMU II side via a Web GUI connection to the OMU II.
Figure 1-1. Axell MBF-20 Dual-band (left) and Quad-band (right) Remotes
© Axell Wireless Ltd
User Manual Doc No. 00068UM Rev. 2.4
MBF-20 AMERICAS REMOTE
PRODUCT DESCRIPTION AND USER’S MANUAL
1.1 Features and Capabilities
•
Comprehensive in-building coverage in a simple and cost effective manner
•
Up to 4 frequency bands in two compact enclosures supported on one fiber strand,
full multi-operator support
•
Band support (model dependent):
•
Band support (model dependent):
•
850 MHz and 1900 MHz
•
700 MHz and 1700MHz
•
Two service antenna ports, 23dBm composite per antenna port per band (model
dependent)
•
Maximum uplink and downlink RF Gain: 18 dB
•
Single fibre feed for a quad-band unit
•
Flexible architecture allows MIMO support
•
Plug-and-play:
•
More service support without adding F/O cables
•
Connected unit is automatically detected, commissioned and managed
from the OMU II via a Web GUI sessions
•
Very low noise factor (10 dB) minimizing interference to BTS and increasing high
speed data throughput
•
LEDs for local alarm indicators
User Manual Doc No. 00068UM Rev. 2.4
© Axell Wireless Ltd
MBF-20 AMERICAS REMOTE
PRODUCT DESCRIPTION AND USER’S MANUAL
1.2 Interfaces
This section describes the interfaces for the MBF-20 Dual-band and MBF-20 Quad-band
remotes.
The image below shows the dual-band unit without the wallmount bracket or power
supply.
Press to initiate
setup (relevant
for future
versions)
Power
Service
Antenna
Status LEDs
Service
Antenna
Optic port
Figure 1-2: MBF-20 Dual-Band Front Panel
The image below shows the assembled quad-band unit without the wallmount bracket or
power-supplies.
Status LEDs
Power (Master)
Power (Slave)
Press to initiate
opto-adjustment (optional)
Fibre Optic port
Service Antenna
Service Antenna
Figure 1-3: MBF-20 Quad-Band Front Panel
© Axell Wireless Ltd
User Manual Doc No. 00068UM Rev. 2.4
MBF-20 AMERICAS REMOTE
PRODUCT DESCRIPTION AND USER’S MANUAL
The following table provides a description of the front panel connectors.
Port
Description
Fibre I/O
Fibre-optic cable connection. Connected directly to an OMU optic
module.
Service
Antenna
Two Service antenna connections - DIN 7/16” connector, female
DC Power (15V)
Circular, 4-PIN power connection to provided power supply,
assembled at the side of the MBF-20.
Status LEDs
Provide status on Power, Faults, Data and Opto Link.
Described below.
Setup button
(Relevant for future versions)
Located on the left panel.
Press (using a sharp object such as a screw driver) to initiate
opto-adjustment procedure. Do NOT use a pencil.
The following table provides a description of the front panel LED indicators. See
Appendix D for more information.
LED
Description
Power
Power indicator (Green = ON)
Opto Tx/Rx
Green if DAS laser power is OK.
Opto Rx
Green if light is correctly received from OMU.
UL/DL Data
Flashes yellow periodically to indicate UL/DL traffic.
Error
Red Error LED flashes if DAS is not polled by OMU for over
30sec.
1.3 Power Supply
Each MBF-20 unit requires a power supply. MBF-20 Quad-band assembly requires two
power supplies – one for the Master and one for the Expansion.
Connect to Front
panel DC power
(15V) connector
Connect to
110/230 VAC
power source
Figure 1-4: MBF-20 Power Supply
User Manual Doc No. 00068UM Rev. 2.4
© Axell Wireless Ltd
MBF-20 AMERICAS REMOTE
PRODUCT DESCRIPTION AND USER’S MANUAL
Installation Requirements
This chapter provides information on the Remote installation site requirements, on the
installation requirements of the antennas, the specifications of the service antennas
suitable for operation with this remote and RF and F/O cable requirements.
2.1 MBF-20 Installation Requirements
2.1.1 Safety Guidelines
Before installing the Repeater, review the following safety information:
•
Follow all local safety regulations when installing the Repeater.
•
Only qualified personnel are authorized to install and maintain the Repeater.
•
Ground the Repeater with the grounding bolt located on the external lower side of
the Repeater).
•
Do not use the grounding bolt to connect external devices.
•
Follow Electro-Static Discharge (ESD) precautions.
•
Use low loss cables to connect the antennas to the Repeater.
Class 1 Laser
This product is equipped with class 1 lasers, as per definition in EN 60825-1.
Caution!!! Un-terminated optical receptacles may emit laser
radiation. Do not stare into beam or view with optical instruments.
2.1.2 Criteria for Remote Installation Location
The following criteria should be considered when selecting the Remote installation site
location:
•
Application type
•
General surroundings
•
Available installation
•
Install the Remote in a shielded, ventilated, and easy-to-reach area.
•
Verify that there is a minimum of a 50 cm (20”) radius of space around the Remote,
enabling easy access to the remote for maintenance and on-site inspection.
•
Distance from antenna site - It is recommended that the installation location be as
close as possible to the antenna site in order to maintain the cable loss to a
minimum.
•
The Remote is convection cooled so airflow and alternation should be possible.
•
Install the Remote close to the service area to monitor the output power.
•
Use low loss cables to connect the antennas to the Repeater.
© Axell Wireless Ltd
User Manual Doc No. 00068UM Rev. 2.4
MBF-20 AMERICAS REMOTE
PRODUCT DESCRIPTION AND USER’S MANUAL
2.1.3 RF Cable Installation Guidelines
Required:
•
For all coaxial connections to/from the Repeater - high performance, flexible, low
loss 50Ω coaxial communications cable.
•
All cables shall be weather-resistant type.
•
Cable length - determined by the Repeater installation plan. When calculating the
cable length, take into account excess cable slack so as not to limit the insertion
paths.
2.1.4 F/O Cable Installation Guidelines
Use the following over the complete link between the Remote and OMU:
•
Use angled APC connectors at 8deg angle.
•
APC type ODF connections.
•
Cable length - determined by the Remote installation plan. When calculating the
cable length, take into account excess cable slack so as not to limit the insertion
paths.
Recommended fibre-optic cable:
•
Single mode 9/125
2.2 Service Antenna Requirements (English)
This section provides information on the specifications of the service antennas suitable
for operation with this repeater, on the installation requirements of the antennas and on
the Repeater installation site and cable requirements.
ATTENTION!!
• The installer is held accountable for implementing the rules required for deployment.
• Good engineering practice must be used to avoid interference.
• Output power should be reduced to solve any IMD interference issues.
2.2.1 Required Antenna Information
The following antenna requirements, specifications and site considerations should be
met.
•
Service area type and size
•
Antenna type and characteristics
•
Height
•
Length and type of coaxial cable required for connecting the Service antenna to the
Remote and the attenuation.
2.2.2 Recommended Antennas
The Service antenna is installed indoors, where the type of antenna depends on the
application.
User Manual Doc No. 00068UM Rev. 2.4
© Axell Wireless Ltd
MBF-20 AMERICAS REMOTE
PRODUCT DESCRIPTION AND USER’S MANUAL
Specifications:
•
One or a combination of the following antennas can be used: Ceiling Mount Patch
antenna, Wall Mount Patch antenna, Corner Reflector.
•
Choose an antenna with high side lobe attenuation which enables maximum isolation
from other service/ mobile antennas.
•
Net gain [Gain Antenna – Cable loss] must not exceed 13 dBi
•
Antennas with gain < 13 dBi can be connected directly to the MBF-20 ports.
•
Higher gain antennas may be connected to the MBF-20 ports along with adequate
cable and splitting losses
2.2.3 Service Antenna Installation Criteria
Determine the antenna installation configuration, according to the transmission
requirements and the installation site conditions.
Installation requirements:
•
An indoor antenna should be installed at a convenient location. It should be free of
metallic obstruction.
•
Install the Service Antenna at the designated height and tune it roughly toward the
Service coverage area.
•
Installation of this antenna must provide a minimum separation distance of 35cm
from any personnel within the area.
2.3 Service Antenna Requirements (French)
Cette section fournit des informations sur les spécifications du donneur et des antennes
de services adaptés pour fonctionner avec ce répéteur, sur les conditions d'installation
des antennes et sur le site d'installation de répéteur et exigences de câblage.
ATTENTION!!
• L'installateur est tenu pour responsable de la mise en œuvre des règles
nécessaires au déploiement.
• Les bonnes pratiques d'ingénierie doit être utilisée pour éviter les interférences.
• Puissance de sortie doit être réduite pour résoudre tous les problèmes
d'interférence de l'IMD.
2.3.1 Antenne Informations Requises
Les exigences d'antenne suivants, les spécifications et considérations du site doivent
être remplies:
•
Type de zone de service et la taille
•
Type et les caractéristiques de l'antenne
•
Hauteur
•
La longueur et le type de câble coaxial requis pour relier l'antenne au répéteur et
l'atténuation.
© Axell Wireless Ltd
User Manual Doc No. 00068UM Rev. 2.4
MBF-20 AMERICAS REMOTE
PRODUCT DESCRIPTION AND USER’S MANUAL
2.3.2 FCC et IC conformité de l'installation intérieure
L'antenne de service est installé à l'intérieur, où le type d'antenne dépend de
l'application.:
•
Un ou une combinaison des antennes suivantes peuvent être utilisées: Antenne
Patch pour montage au plafond, antenne Patch pour montage mural, Réflecteur en
Coin.
•
Choisissez une antenne à haute côté atténuation du lobe qui permet une isolation
maximum des autres services / antennes mobiles.
•
Gain net [Gain Antenna - la perte de câble] ne doit pas dépasser 13 dBi
•
Les antennes à gain <13 dBi peut être connectée directement aux ports MBF-20.
•
Antennes à gain plus élevées peuvent être connectés aux ports MBF-20 avec des
pertes de câble et de division adéquates.
2.3.3 Critères d'installation de l'antenne d'installation d'intérieur
Déterminer la configuration de l'installation de l'antenne, selon les exigences de
transmission et les conditions du site d'installation.
Exigences d'installation:
•
Une antenne intérieure doit être installée à un endroit pratique. Il doit être libre de
tout obstacle métallique.
•
Installez l'antenne de service à la hauteur désignée et l'accorder à peu près vers la
zone de couverture du service.
•
L'installation de cette antenne doit fournir une distance minimale de séparation de
35 cm de tout le personnel dans la région
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MBF-20 Installation
A maximum of 24 MBF-20 dual/quad units can be connected to a single OMU II system.
The number varies depending on the OMU II hardware configuration and any additional
installed high-power fibre-fed remotes.
Note the following:
•
Up to four MBF-20 remotes can be installed per OMU II node (via an Optic
Splitter).
•
When multiple remotes are installed at a single node, each remote must
support a unique UL colour wave (MBF-20 model specific).
•
Each MBF-20 is connected towards an OMU II Optic Splitter module
This section describes two types of installation procedures:
•
Single MBF-20 unit – section 3.1.
•
Quad-band assembly consisting of two MBF-20 units – section 3.2.
3.1 Dual-band Installation
The physical installation consists of mounting the unit, connecting antennas, power and
the optic fibre. Once the physical installation is complete, the unit is automatically
identified by the OMU II and can be setup from the OMU II side. Not setup procedure is
required from the remote site.
3.1.1 Overview
NOTE: The service antenna(s) can be positioned and installed (without being connected to the
Remote) at any time either before or after remote installation
1. Unpack the Remote kit.
2. Connect the Power Supply to the bracket (do not connect power).
3. Mount the Bracket assembly on the wall.
4. Mount the Remote onto the bracket.
5. Clean and Connect the Fibre Optic cable.
6. Connect the antenna(s).
7. Power-on the Remote.
3.1.2 Required Tools and Materials
The following is required in order to install the Remote:
•
Standard professional tool box
•
F/O cleaning kit
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3.1.3 MBF-20 Dual-band Kit
Upon receiving the Remote, perform the following:
1. Examine the shipping container for damage before unpacking the unit.
2. Perform a visual inspection to reveal any physical damage to the equipment.
3. Verify that all of the equipment (listed below) is included. Otherwise contact Axell
Wireless.
MBF-20 Dual band kit
Description
Image
MBF-20 Remote
Wallmount Bracket
Remote Power Supply (15V)
4 x N-6 x 10 panhead screws
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3.1.4 Mounting Remote
Choose the location of the Remote on the wall according to the following criteria:
•
The location should be at normal eye level height, above ground.
•
Be sure to allow easy access to the Remote for maintenance and on-site
inspection.
WARNING!!! The Remote must always be installed vertically and top-down, to allow free-flow of
cooling air. Horizontal installation on a bench for prolonged period of time may cause damage to the
Remote due to over-heating
To mount the Remote on the wall
1. Insert the supplied power supply tabs into the side of the bracket, each tab in its slot
and tighten using the provided screws.
Insert PS
tabs here
Screw in
tabs here
2. Using the bracket assembly for reference to the bolt locations, insert the appropriate
bolts (not supplied) on the wall, according to the type of wall.
3. Hang the bracket assembly on the wall and tighten.
Hang bracket on these
Figure 3-1. Mounting the Bracket on the Wall
4. Hang the Remote on the Bracket as illustrated below.
To do so, refer to Figure 3-2:
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•
Loosely screw the 4 x N-6 x 10 panhead screws - two on each side of the
MBF-20 (red arrows).
•
Hang the MBF-20 on the bracket by sliding the four screws into the bracket
inlets.
•
Verify that the MBF-20 is firmly mounted and tighten the 4 x N-6 x 10
screws to secure the Repeater to bracket.
Figure 3-2. MBF-20 to Bracket Mounting
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3.1.5 Antenna Connections
CAUTION!!
• Do not connect the antenna cables to the remote before verifying the installation
parameters.
• Do not power-up the remote without either the antennas being connected or the
antenna connections terminated with dummy loads..
To connect the antennas to the MBF-20 Master
1. Install the antenna cables along their path to the Remote, and connect them to the
Antennas.
NOTE: Be sure to use low loss cables.
2. Connect the Service antenna(s) to any of the MBF-20 Master MOBILE ports. (Mobile
antenna specifications and installation criteria are described in section 2.2).
3. Terminate any unused service antenna port.
4. Verify all RF connectors are tightened and the cables and antennas are secured.
RF Service
Antenna
RF Service
Antenna
Figure 3-3: MBF-20 Single/Dual-Band Antenna Connections
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3.1.6 Power Up
To power up
Connect the Remote P.S. to the AC power outlet and to the Remote DC connector.
Connect to
Repeater Power
Connect to
110/230 VAC
Figure 3-4. Powering Up
3.1.7 Fibre Optic Connections
Note the following:
•
Be sure to use low loss optic fibre cables
•
Install according to F/O specifications and installation criteria are described in
Appendix B.
To connect the F/O cable from the OMU II side to the Remote
NOTE: Be sure to use low loss cables.
1.. Connect the F/O cable from the OMU II side to the Remote’s F/O port.
2. Verify F/O is securely connected.
3. Verify LEDs (see Appendix D).
Fibre Optic Port
Figure 3-5: MBF-20 Dual-Band Fibre Optic Connection
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3.1.8 MBF-20 Local Optical Link Adjustment (N/A)
NOTE: This option will be available in future versions.
To verify the link is operational, you can initiate Optical Link Adjustment (OLA) by
pressing a button at the side of the MBF-20.
To initiate OLA from the MBF-20 side
1. Locate the auto-config button at the side of the remote (see below).
2. Use a pin (or similar thin object) to press the sunken button.
3. Wait two minutes and verify LED Opto Tx and Opto Rx status.
3.1.9 What Next
After completing the physical installation, the MBF-20 is automatically detected by the
OMU II. The adjustment and setup procedure is then performed from the OMU II side
(Chapter 4).
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3.2 Quad-Band Installation
The MBF-20 Quad-band consists of two assembled MBF-20 remotes: an MBF-20 Master
and an MBF-20 Expansion. The MBF-20 Quad-band unit is fed by a single F/O cable and
shares two service antennas, where the F/O and service antenna interfaces are located
on the MBF-20 Master unit. A dedicated power supply is installed for each unit.
If a Master MBF-20 is pre-installed, it is required to dismount the unit before assembling
it to the MBF-20 Expansion unit.
NOTE 1: The MBF-20 Quad-band Installation Sheet provides Instructions for assembling the Master
and Expansion unit and installing the assembly.
NOTE 2: For optimal VSWR performance on QUAD-band units, you can use an external two way
splitter (acquired free of charge) from you local Axel wireless sales representative.
Figure 3-6: Cascaded MBF-20 Quad-band
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4 MBF-20 Setup and Commissioning
The MBF-20 Remote is a Plug-and-Play solution that requires no configuration at the
remote installation site. The setup procedure described in this section is performed by
opening a management session to the host OMU II unit.
The MBF-20 Setup and Commissioning consists of:
1. Accessing the MBF-20 via OMU session.
2. Verifying and (if necessary) performing Optical Loss Adjustment.
3. Setting the required RF attenuation and gain levels.
4. Assigning the unit a recognizable name according to its location.
4.1 Open a Session to the MBF-20 via the OMU II
1. Open a local or remote session to the host OMU II:
•
Remote session – open a Browser session in the same subnet as the host
OMU II and enter the IP of the host OMU II. Enter the OMU II User Name
(axell) and Password (provided by your system administrator).
•
Local session– connect to the OMU II Control Module USB port or Ethernet
port. Enter the OMU II User Name (axell) and Password (provided by your
system administrator).
Connect to EITHER the
USB port or Ethernet port
USB cable
Ethernet cable
Figure 4-1: Connection to OMU II
The OMU II main screen appears (see example below).
Figure 4-2: OMU II Main window
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4.2 Optical Loss Adjustment (OLA)
NOTE: (In future versions), the optical loss adjustment (OLA) for the unit may have already been
performed from the installation site by pressing the button on the unit left pane (section 3.1.8).
Perform OLA from the OMU II. This section describes how to verify the OLA status for a
specific MBF-20 unit and how to perform the OLA if necessary.
To view OLA status and perform OLA
1. From the OMU II main window, click the Opto Adjust button.
Click to access
Optic Adjustment
Nodes 1 to 5
Figure 4-3: OMU II Main window
2. The following window appears. The window provides optical adjust options and
shows the optical adjust status for each fibre-fed remote link. The links are listed
according to the OMU II unit and nodes represented by Optic Conversion Units,
along with optical adjustment status information.
Select nodes
for UL/DL
Adjustment
Rack#:OptoModule
MBF-20
Remotes
connected via
Optic Splitter
Figure 4-4: OMU II Opto Adjust Pane
3. Verify that adjustment has been performed successfully on the relevant node (s):
18
•
The adjacent LED is GREEN.
•
The Progress column provides detailed information on when the
adjustment was performed.
•
The Compensation column shows the required compensation.
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4. If necessary, perform adjustment on the link(s) by doing the following:
•
Checkmark the node(s) – or click on one of the buttons for other selection
options.
•
Click Adjust.
The status of the adjust procedure for each selected node, and the amount of
compensation (for completed adjustment procedures) is displayed in the
corresponding row(s).
5. Perform the RF balancing according to the following section.
4.3 MBF-20 RF Balancing
The MBF-20 RF Balancing procedure can be performed manually (the automatic option
specified in section 4.3.2 will be available in the future) via the OMU II web interface.
4.3.1 Manual MBF-20 RF Balancing
The manual balancing procedure consists of the following steps:
•
Verifying a DL RF output level of 18/23dBm by setting the required DL attenuation of
the signal.
•
Setting the UL attenuation according to the DL.
•
In case of noise, adjusting the UL attenuation to reduce noise
To balance the MBF-20 UL and DL outputs
1. Access the MBF-20 Configuration window:
•
Click on the Nodes button. The below pane appears
•
Click Control next to the node to be balanced.
2. The resulting pane can be displayed in two views:
•
Basic – default view (Basic button)
•
Advanced – provides more information (Advanced button)
The dialog below shows an example of the Basic (default) view.
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Views
General
Band
information
UL setting
DL setting
Figure 4-5: Example of MBF 20 Quad Band Configuration window
3. The General area provides basic identification and status information and enables
assigning an identifiable name:
•
Received level – opto signal level at the MBF-20 (from the optic fibre)
•
Tag – identifiable name currently assigned to the unit. Click the
to change the name.
•
Model – unit type, frequencies and Master (M) or Slave (S)
•
ID – unique serial number associated with this unit (automatically
assigned by AEM)
•
Opto Loss Compensation – compensation allocated on the UL during the
Optical Adjustment procedure
icon
4. In the Downlink:
20
•
Verify the Amplifier for each band is ON.
•
Set Attenuation to maximum value (15dB).
•
Lower the Attenuation level step by step until the desired Output power
level is reached. (Zero attenuation = maximum gain).
•
Verify the Amplifier Saturation is GREEN.
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5. In the Uplink:
•
Verify the Amplifier for each band is ON.
•
Set Attenuation equal to the value set in the DL (above).
•
Verify the Amplifier Saturation is GREEN.
NOTE: If noise is detected on the link, reduce only the Uplink for optimal signal.
4.3.2 Automatic MBF-20 RF Balancing
NOTE: This feature will be available in future release.
To access the Automatic RF Adjustment pane
1. Access the OMU II Home window and click on RF Adjustment.
Figure 4-6: OMU II Main window
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The following pane appears.
MBF-20 remote
with selected
bands to adjust
2. Select the bands of each remote to be adjusted (e.g. 1900MHz band on Node #3)
3. Adjust the following for each band:
•
Nominal Level (dBm)
•
Uplink Delta (dB)
4. Click Adjust. The procedure may take several minutes depending on the number of
units selected.
4.4 What Next?
The MBF-20 unit is now ready for operation. You may monitor the unit general status via
the OMU II Main window and if the node is faulty (red LED), access the dedicated
configuration pane in Basic and Advanced view for more information.
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Monitoring Via the MBF-20 Home Screen
In addition to RF settings and readings, the MBF-20 Home screen provides detailed
information on the operation status of internal modules. This information can be used to
aid in remotely troubleshooting the unit.
To access the MBF-20 Main Monitoring and Configuration window
1. Access the OMU II main windows, click the Nodes button, choose the remote related
node and click the adjacent Control button. The MBF-20 Home window appears in
Basic View. To view more details, click Advanced.
General
Detailed fibre optic
status
Detailed Repeater
Status view
Figure 4-7: MBF-20 Main Screen Advanced
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4.4.1 General Area
Figure 4-8: MBF-20 General Advanced View
Indicator
Description
Received level
Opto signal level at the MBF-20 (from the optic fibre)
Tag
Identifiable name currently assigned to the unit. Click
the
icon to change the name.
Model
Unit type, frequencies and Master (M) or Slave (S)
ID
Unique serial number associated with this unit
Opto Loss Compensation
Power dedicated by OMU to compensate for the signal.
Transmitter
RF transmitter status
Pilot Tone Generator Synth
Pilot tone synthesizer module status
Received Pilot Tone Signal
Received pilot tone status
Opto Matching
Indicates OMU and MBF-20 are connected (if green)
Opto Loss Adjustment
Perform OLA via MBF-20
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4.4.2 Detailed view of the MBF-20
Figure 4-9: MBF-20 Band Status
Indicator
Description
Comm
Communication status
Firmware
Firmware related error
Power Supply
Power supply related error
Temperature
Temperature level and status indicator
Frequency
Band frequency used
Power Range
Output power
System Mute
Indicates system has muted a specific amplifier (will
turn red)
Amplifier
Turn amplifier on/off
Attenuation
Set attenuation of RF signal (UL/DL)
User Mute
If Red - system has been muted by user
Saturation Status
Saturation level status
Output
Output power level used
Saturation Alarm
See above
Nominal Power Level
Displays the current nominal power level of the system
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Appendix A: US/Canada Specifications
Frequency Range
700MHz
Uplink
Downlink
Lower band 698-716MHz or
Lower band 728-746MHz or
Upper band 776-787MHz
Upper band 746-757MHz
850MHz
817-849MHz
862-894MHz
1900MHz
1850-1915MHz
1930-1995MHz
1700MHz
1710-1755MHz
2110-2155MHz
Versions
700MHz
1900MHz
1700MHz
Operational Bandwidth
29MHz
60MHz
45MHz
Composite Power
+23dBm
+23dBm
+23dBm
Ripple in Passband
±2dB
±3dB
±2dB
Service Antenna ports
Noise Figure
10dB Typical (maximum gain)
Propagation Delay
< 2µs
Modulation Accuracy at Nominal Output Power
GSM/GMSK
< 2.5º RMS and <10º peak
EDGE/8-PSK
< 3% EVM RMS
WCDMA/EVM
< 12.5% RMS (composite according to ETSI TS 25.106 with TM1/64
DPCH
PkCDE
< -33dB (according to ETSI TS 25.106 with TM 1/64 DPCH and spreading
factor 256)
General Parameters
Gain UL/DL
18/18dB Adjustable, in 1dB steps
System Impedance
50 Ohm
Antenna Connectors
N-Type
Electrical ratings
110/230VAC
Power Consumption
Single/Dual Band
Tri/Quad Band
30W/50W
75W/100W
Optical Parameters
DL Wavelength
1310nm
UL Wavelengths
1510, 1530, 1550, 1570, 1590nm
F/O Connector
SC/APC
Max Optical Loss
3dB
Mechanical
Dual Band
Tri/Quad Band
Dimensions
11.8” x 8.66” x 2.91”
11.8” x 8.66” x 5.8”
(300 x 220 x 74mm)
(300 x 220 x 148mm)
Weight
8.9lbs (4kg)
17.8lbs (8kg)
Enclosure
IP 30
Environmental
Operating
32 to + 113ºF (0 to + 45ºC)
Temperature
Storage
-40 to 185 ºF (-40 to +85ºC)
Humidity
ETSI EN 300 019-2-4
Complies with
FCC/IC
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Appendix B: Optic Fibre Cables
Connections
This product is equipped with Class 1 lasers, as per definition in EN 60825-1.
Caution!!! Un-terminated optical receptacles may emit laser radiation.
Do not stare into beam or view with optical instruments.
Note: Angled connectors, APC, need to be used throughout the whole link between the unit and the
remote. The angle needs to be 8 degrees. Also the ODF connections need to be APC type.
The fibre must be monomode type.
Connecting the Fibre Optic Cable
1. Select type of optic fibre (Recommended fibre
cable is single mode 9/125).
2. Run the fibre through a corrugated sleeve.
3. Insert the cable via the Fibre input.
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4. Connect the fibre to the Fibre Optic Converter
inside the repeater.
NOTE: Make sure the fibre is not bent too sharply inside
the repeater as to avoid communication disruptions.
5. Place the fibre in the rubber seal.
Note: The sleeve, together with the rubber seal, meets the
protection standard IP65.
6. Adjust the fibre length inside the repeater and
insert the seal into the fibre input interface.
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7. Attach the sleeve to the fibre optic inlet.
Note: Clean the fibre connector before connecting it to the
system.
Optical reflections from a discontinuity such as a
poor connector interface appear on an RF spectrum
analyzer trace as stable variations in the noise floor
amplitude that are periodic with RF frequency. If
the reflection is bad enough, it could impact the
system performance. The most common cause for a
large discrete reflection is a dirty optical connector.
A bit of dust or oil from a finger can easily interfere
with, or block this light.
Note: Perform the cleaning procedure as described in
Appendix C: F/O Cleaning Procedure.
Be sure to use the correct procedure for the given
connector.
When disconnected, cap the SC/APC connector to
keep it clean and prevent scratching the tip of the
ferrule.
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Appendix C: F/O Cleaning Procedure
NOTE: The process is demonstrated on an OMU F/O module and is similar to all F/O equipment
supplied by Axell.
Tools:
Tool Description
Illustration
Fibrescope connected to a PC running the
appropriate viewing software.
It is highly recommended that some form of
fibre viewing equipment such as a Fibrescope is
used to ensure that all fibre connections are
clean before termination; failure to do so could
result in poor system performance
Lint-free swabs (box), Axell P/N 99-000127
Lint-free wipes (pack) Axell P/N 99-000125
Fujikura “One Click” cleaner, Axell P/N 98900004.
99% isopropyl alcohol (can), Axell P/N 99000126
Cletop type S Cassette Cleaner, Axell P/N 98900068
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The Cleaning Procedure:
Dry Cleaning
ATTENTION! Invisible laser radiation might be emitted from disconnected
fibres or connectors. Do not stare into beams or view directly with optical
instruments.
Note the following:
•
Before cleaning the optical connectors on the OMU it is advisable to clean the
connector of the mating cable being attached to the optical port.
•
An unclean optical connector is often the cause for reduced system performance. A
bit of dust or oil from a finger can easily interfere with, or block light. Fortunately, it
is very easy to clean the connector. Be sure to use the correct procedure for the
given connector. When disconnected, cap the SC/APC connector to keep it clean and
prevent scratching the tip of the ferrule.
•
Use a product specially designed for the purpose, such as the Cletop type S Cassette
Cleaner.
IMPORTANT: Always make sure there is a way of inspecting the connector after
cleaning. Cleaning can actually leave the end-face in a worse condition, since alcohol
residue is one of the most difficult contaminants to remove.
1. Begin by dry cleaning the F/O
bulkhead connector (shown below is
the Fujikura One-Click in use).
2. Remove the protective cap from the
cleaning-head end of the “One Click”
cleaner, lift the protective end-cap on
the fibre connector and offer-up the
end to the fibre connector
3. With the cleaning-head end fully
engaged in the connector, push until
an audible “click” is heard
4. Without fully withdrawing the cleaning
head end push it in again twice more,
each time until an audible “click” is
heard.
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5. Withdraw the “One Click” cleaner and replace the protective end cap.
6. Inspect the fibre connector using a Fibrescope. On the PC monitor, verify that there
is no contamination present on the connector end-face.
7. If the connector is dirty, clean it with a wet cleaning technique followed immediately
by dry cleaning. This is to remove any remaining residue from the wet clean (the
following steps demonstrate a wet cleaning
technique).
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Wet Cleaning
ATTENTION!
Invisible laser radiation might be emitted from disconnected fibers or
connectors. Do not stare into beams or view directly with optical instruments.
1. Lightly moisten a new lint-free wipe with 99% isopropyl alcohol. (Step 1 below).
Tip: Have a dry lint-free swab available for immediately drying after performing the wet-cleaning.
2. Lightly press and turn a clean lint-free swab in the moistened area of the wipe to
moisten the swab. It is important that the swab is not too wet. (Step 2 below).
3. Insert the moistened lint-free swab into the bulkhead adapter. Lightly press and
rotate several times in the same direction. (Step 3 below).
Step 1
Step 2
Step 3
Wet-Cleaning Technique
4. Immediately use a dry lint-free swab to clear any remaining alcohol residue.
NOTE: Do not re-use any of the wipes and/or swabs. Dispose of them properly.
5. Follow steps 3 to 6 of Dry Cleaning above
6. Re-inspect the fibre using the Fibrescope. On the PC monitor, verify that there is no
contamination
present on the connector end-face.
7. If the fibre is still dirty, go back to step 1 (Wet Cleaning) and repeat the entire
process.
NOTE: The entire wet/dry cleaning cycle should only be used twice, if the fibre is still dirty after two
cycles of wet/dry cleaning seek advice from the Axell Wireless Support Desk.
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Appendix D: LED Troubleshooting
MBF-20 provides two types of indications of Remote failure:
•
Alarms screen in Web access application
•
Status LEDs on Dual-Band Remote front panel
The following section provides a description of the troubleshooting procedures according
to the Repeater LED indicators. For Web-access alarm specifications, refer to the OMU II
User Manual.
Da
pt a
Rx
pt
Tx
Da
ta
DL
UL
PW
ER
The MBF-20 remote includes six LEDs on its front panel (see section 1.2). The following
table provides a description of the LED troubleshooting procedures.
LED 1, Power, Green
On
Off
LED 2, Error, Red
On
Off
LED 3, UL Data, Yellow
On
Off
LED 4, DL Data, Yellow
On
Off
LED 5, Opto Rx, Green
On
Off
LED 6, Opto Tx, Green
On
Off
34
Unit is powered on
Unit has no power
Error detected
No error
Communication is ongoing in the uplink direction
No communication
Communication is ongoing in the downlink direction
No communication
Received RF signal on fibre channel is above threshold
Input level below threshold
Transmitted RF signal on fibre channel is above threshold
Output level below threshold
User Manual Doc No. 00068UM Rev. 2.4
© Axell Wireless Ltd

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