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
Web site
Support issues
Technical Support Line, English speaking +44 1494 777 777
Contact information for Axell Wireless offices in other countries can be found on our web site,
This Product Manual provides the following information:
• Description of the Repeater
• Procedures for setup, configuration and checking the proper operation of the Repeater
• Maintenance and troubleshooting procedures
For whom it is Intended
This Product Manual is intended for experienced technicians and engineers. It is assumed that the
customers installing, operating, and maintaining Axell Wireless Repeaters are familiar with the basic
functionality of Repeaters.
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.
Safety Warnings and Admonishments
Throughout this manual, important safety warnings and admonishments are included to warn of
possible hazards to persons or equipment. A safety warning identifies a possible hazard and then
describes what may happen if the hazard is not avoided. The safety warnings – in the form of
Dangers, Warnings and Cautions must be followed at all times. These warnings are flagged by the
use of a warning icon, usually the triangular alert icon seen below. The exclamation point within the
triangular alert icon is intended to warn the operator or service personnel of operation and
maintenance from factors relating to the product and its operating environment, which could pose a
safety hazard.
General Safety Warnings Concerning Use of This System
Always observe standard safety precautions during installation, operation and maintenance of this
product. Only a qualified and authorized personnel should carry out adjustment, maintenance or
repairs to the components of this equipment.
Danger: Electrical Shock
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.
Caution: RF Exposure
Installation of an antenna must comply with the FCC RF exposure requirements.
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’s Digital Multi-Band Repeater for USA (D-MBR-USA) is an in-building, band-selective
repeater with advanced digital filtering capabilities that operates in the LTE 700MHz (simultaneously in upper and lower band), CELL 850MHz, AWS 1700MHz and PCS 1900MHz bands. It provides an
excellent single unit solution for multi-operators or for operators with a non-contiguous spectrum.
Up to eight or twelve (model dependent) non-contiguous sub-bands can be user configured for each
band, where the gain and power of each of the sub-bands can be individually defined.
The Repeater provides highly accurate out-of-band-rejection and simple, GUI based procedures for
adjusting the pass band according to the relevant frequency spectrums.
D-MBR-USA includes the SmartALC power control algorithm that automatically optimizes the gain
setting by learning the actual range of RSSI levels over a user-specified period of time. The
SmartALC algorithm prevents oscillations, reduces the amount of isolation required by the system
and optimizes the system to minimize noise rise at the donor cell site.
GUI based web management is supported through both Ethernet and remote wireless connections
provided by an integrated CDMA modem. Local setup can be performed through a connection to the
Ethernet port using a cross-cable.
Figure 1. Axell D-MBR-USA Repeater
Axell Wireless Ltd 1
AXELL
PRODUCT DESCRIPTION AND USER’S MANUAL
D-MBR-USA R
EPEATER
1.1 Features
• Indoor Repeater supporting the following bands:
• LTE 700 MHz – simultaneously over the complete upper and lower band spectrum
• CELL 850 MHz, AWS 1700MHz and PCS 1900 MHz.
• Composite Downlink Output Power:
• LTE 700 MHz: 33 dBm
• CELL 850MHz: 33 dBm
• AWS 1700MHz: 30 dBm
• PCS 1900 MHz: 30 dBm
• Composite Uplink Output Power: + 27 dBm per band
• RF Gain: 80 dB
• Single module support for Lower/Upper LTE 700MHz band
• Up to 8 or 12 software selectable non-contiguous sub-bands with individual gain and power
settings for each sub-band – the number of supported sub-bands depends on the defined
bandwidth of each sub-band
• High linear amplification and spectral purity
• Excellent out-of-band interference prevention
• Highly accurate frequency selection
• SmartALC™ technology:
• Automatically sets optimum gain
• Prevents oscillations and balances coverage
• Ensures transparent network operation
• Simple mounting in a standard 19” rack
• Simple setup via an intuitive GUI application
• Simultaneous support for both static and dynamic address allocation (two independent IPs)
• Supports SMS and SNMP fault notification
• Remote Web access monitoring and control via either an Ethernet or a wireless connection
(implemented through an integrated GPRS/CDMA modem)
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PRODUCT DESCRIPTION AND USER’S MANUAL
1.2 Models and Ordering Information
Part Number Product Name
D-MBR-CH DMBR Chassis
D-MBR-CDMA-M DMBR Modem
D-BM-3307
D-BM-3307-12 DMBR 700 33 dBm module
D-BM-3308 DMBR 850 33 dBm module
D-BM-3308-12 DMBR 850 27 dBm module
DMBR 700 33 dBm
module
Service & Frequency
[MHz]
4 band D-MBR chassis,
power supply,
communication card
D-MBR CDMA 1X
Modem
33 dBm, 8 filter 700 LTE
module for DMBR
33 dBm, 12 filter 700
LTE module for DMBR
33dBm, 8 filter 850
Cellular module for
DMBR
33 dBm, 12 filter 850
Cellular module for
DMBR
Supported sub-bands
/filter
--
--
700 - all LTE filters
1.4/3/5/10/15/20 MHz
700 - all LTE filters
1.4/3/5/10/15/20 MHz
Cellular A , A' , A'', B, B'
, up to 25MHz in
2.5MHz steps and all
LTE filters;
Cellular A , A' , A'', B, B'
, up to 25MHz in
2.5MHz steps and all
LTE filters;
D-BM-3017
D-BM-3017-12
D-BM-3019
D-BM-3019-12
D-MBR-9P D-MBR 9 Plexer
D-MBR-7P-7-8-19 D-MBR 7 Plexer
D-MBR-7P-7-8-17 D-MBR 7 Plexer
D-MBR-7P-7-17-19 D-MBR 7 Plexer
DMBR 1700 30 dBm
module
DMBR 1700 30 dBm
module
DMBR 1900 30 dBm
module
DMBR 1900 30 dBm
module
30 dBm, 8 filter 1700
AWS module for DMBR
30 dBm, 12 filter 1700
AWS module for DMBR
30 dBm, 8 filter 1900
PCS module for DMBR
30 dBm, 12 filter 1900
PCS module for DMBR
9 Plexer to support 700 /
850 / AWS / PCS for
DMBR
The Smart Automatic Level Control (Smart-ALC) is an innovative algorithm for automatic repeater
gain adjustment. Combined with advanced control algorithms, SALC is capable of learning the traffic
load characteristics and adjusting the Repeater RF Gain to the desired value.
Smart ALC eliminates the need to perform initial settings for maximal traffic load conditions and onsite gain adjustments.
Smart-ALC maintains the Uplink/Downlink gain balance for system transparency. In addition, SmartALC prevents oscillations that may occur due to insufficient isolation while maintaining the gain in a
linear range operation by adjusting the repeater paths’ gain accordingly.
The repeater’s power amplifier includes power-monitoring circuits with Automatic Level Control
(ALC) that prevents excessive output power while maintaining the power amplifier linearity.
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PRODUCT DESCRIPTION AND USER’S MANUAL
1.4 Axell D-MBR-USA Interfaces
The repeater’s interfaces are located on the front panel. These include Ethernet port, Mobile and
Base antenna connections, Alarm I/O, LED indicators, and power connection
corresponding to each service
LED indicators
Ethernet connection
Dry contact alarms port
Mobile/Service
antenna connection
Base/Donor
antenna connection
Coupler Mobile
GND
Unit AC power
connection
Figure 2. D-MBR-USA Front Panel
The following table provides a description of the front panel ports and connections.
Interface Description
ETHERNET
MOBILE
BASE
COUPLERS MOBILE
RJ45 Ethernet port for Web management.
Service antenna RF connection. See section 3.8
Donor antenna RF connection. See section 3.8
SMA Female Mobile coupling connectors (-20 dB). Used to test
input signals from the Base and Mobile antennas.
ALARM OUT
GPS
N/A
POWER
GND
Ground connection
Dry-contact alarm port for external alert devices. See section 3.11.
The front panel also includes the following LED indicators:
Indicator Description
700 (LTE)
850 (CELL)
1700 (AWS)
1900 (PCS)
One Indicator per –band:
RED Steady - service muted due to general fault
Blinking – service muted by user
ORANGE
Blinking – service initiating
Steady – high DL/UL signal or VSWR
GREEN and
Blinking- Reduced gain by IMOP
ORANGE
GREEN Blinking – DL power below threshold
Steady - normal service operation
MDM (
CONNECTOR
NEAR
)
RJ45
• Green Steady - modem is either not defined, or defined modem
is operating normally.
• Orange Steady– modem is trying to connect
• Red Steady– modem failed to connect
AXELL
D-MBR-USA R
EPEATER
on power up or reset
CCD (
NEAR
RJ45
CONNECTOR
)
Green Blinking – normal operation of CCD
1.5 Modem Support
The Repeater supports two types of integrated modems that required different setup procedures:
• CDMA – modem is continuously ON. Setup according to section 4.7.2
• GSM/GPRS – insert SIM card according to section 3.6 and setup up modem according to section
4.7.
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PRODUCT DESCRIPTION AND USER’S MANUAL
D-MBR-USA R
EPEATER
2 Antenna Specifications and Installation
Requirements
This chapter provides information on the specifications of the donor and service antennas suitable for
operation with this repeater, and on the installation requirements of the antennas.
2.1 Base (Donor) Antenna
The Base (Donor) antenna is usually installed outdoors and is either a directional antenna such as a
Yagi or a Panel antenna.
2.1.1 Required Antenna Information
You will require the following antenna information
• Antenna type and characteristics
• Height
• Length and type of coaxial cable required for connecting the Donor antenna to the Repeater and
the attenuation.
2.1.2 Donor Antenna specifications
• Yagi type or similar – 12 to 20 dBi gain, very sharp beam pointed to the BTS.
• Cable and jumper loss is at least 2dB.
• Example of antenna's typical specifications:
Gain: 8 dBd (=10.1 dBi)
VSWR: < 1:5:1
Impedance: 50 ohm
2.1.3 Installation Criteria
NOTE: Verify that the antennas meet requirements described in section 2.1.
Installation requirements:
• Select a location for the Donor antenna and verify that there is enough signal strength at that
location.
• Install the Donor Antenna at the designated height.
• The antenna should point to the direction of the base station for maximum input power.
• Verify that the antenna is in the base stations line of sight (raise the antenna if necessary).
• Install the donor antenna at a higher level (i.e. floor) than the mobile antenna.
• Must be installed at a minimum distance of 1 meter from any personnel within the area.
NOTE: The Donor and Mobile antennas can be positioned and installed (without connection to the
Repeater) at any time either before or after mounting the Repeater.
1. Unpack the Repeater kit.
2. Install the Repeater in the rack
3. For GPRS modems only: Open the Repeater and insert the SIM card. (CDMA modems do NOT
required SIM cards).
4. Before powering up the Repeater:
• Verify isolation between the donor and mobile antennas
• Verify link between the BTS and Base Repeater.
5. Connect the antennas to the Repeater
6. GND and Power-up the Repeater.
7. Optional - Connect the dry-contact alarms. This can be done at any time, before or after
powering up the Repeater.
3.3 Required Tools and Materials
• Standard professional tool box (not supplied)
3.4 Unpacking
Upon receiving the D-MBR-USA, 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 Ltd.
• D-MBR-USA Repeater
• AC power cable
• Alarms cable
• Ethernet cross cable – for setup connection between computer and Repeater
• RS232 cable for CDMA modem setup
• CD with documentation
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PRODUCT DESCRIPTION AND USER’S MANUAL
3.5 Criteria for Repeater Installation Location
NOTE: The D-MBR-USA Repeater is usually installed in a rack-type enclosure in the communication
room.
The following criteria should be considered when selecting the Repeater installation site location:
• Install the Repeater in a shielded, ventilated, and easy-to-reach area.
• Ventilation:
• The repeater is cooled by forced air provided internally by high MTBF fan. Allow air
flow at front and rear of the Repeater.
• Ensure that adequate airflow and ventilation within the rack and around the installed
components so that the safety of the equipment is not compromised. It is
recommended to allow for at least about 2 cm of airspace between devices in the rack.