CommScope miniRepeater MR8518/8518 Instruction Manual

MR8518/8518
miniRepeater
(2 Fix Bandwidths)
User's Manual
M0139AGH

Page 2 M0139AGH_MR8518_8518 Manual for MR8518/8518
DISCLAIMER:
This document has been developed by CommScope, and is intended for the use of its
customers and customer support personnel. The information in this document is subject to
change without notice. While every effort has been made to eliminate errors, CommScope
disclaims liability for any difficulties arising from the interpretation of the information
contained herein. The information contained herein does not claim to cover all details or
variations in equipment, nor to provide for every possible incident to be met in connection
with installation, operation, or maintenance. This document describes the performance of the
product under the defined operational conditions and does not cover the performance under
adverse or disturbed conditions. Should further information be desired, or should particular
problems arise which are not covered sufficiently for the purchaser’s purposes, contact
CommScope.
CommScope reserves the right to change all hardware and software characteristics without
notice.
COPYRIGHT:
© Copyright 2017 CommScope Inc. All Rights Reserved.
This document is protected by copyright. No part of this document may be reproduced,
stored in a retrieval system, or transmitted, in any form or by any means, electronic,
mechanical photocopying, recording, or otherwise without the prior written permission of
CommScope.
TRADEMARKS
All trademarks identified by ® or ™ are registered trademarks or trademarks, respectively, of
CommScope. Names of products mentioned herein are used for identification purposes only
and may be trademarks and / or registered trademarks of their respective companies.
Andrew Wireless Systems GmbH, 23-March-2017

Table of Contents
M0139AGH_MR8518_8518 Manual for MR8518/8518 Page 3
TABLE OF CONTENTS
1. GENERAL 6
1.1. ABBREVIATIONS 6
1.2. HEALTH AND SAFETY 7
1.3. PROPERTY DAMAGE WARNINGS 7
1.4. COMPLIANCE 8
1.5. ABOUT COMMSCOPE 11
1.6. INTERNATIONAL CONTACT ADDRESSES FOR CUSTOMER SUPPORT 12
2. INTRODUCTION 14
2.1. PURPOSE 14
2.2. THE MR8518/8518 MINIREPEATER 14
3. FUNCTIONAL DESCRIPTION 16
3.1. GENERAL 16
3.2. DESIGN AND CONNECTORS 17
4. INSTALLATION AND COMMISSIONING 18
4.1. MECHANICAL INSTALLATION 18
4.1.1. Health and Safety for Mechanical Installation 18
4.1.2. Property Damage Warnings for Mechanical Installation 18
4.2. ELECTRICAL INSTALLATION 18
5. SOFTWARE SETUP 22
5.1. LOGIN 22
5.2. MENU BAR – BUTTONS 23
5.3. STATUS BAR 23
5.4. STATUS 24
5.5. SETTINGS 26
5.5.1. Settings - Radio Frequency 27
5.5.2. Settings - Alarms 31
5.5.3. Settings - Modem Control 31
5.5.4. Settings - LAN Connectivity 33
5.5.5. Settings - User Account 35
5.6. MAINTENANCE 36
5.7. LOGOUT 37

Table of Contents
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Manual for MR8518/8518
5.8. UPLOAD NEW SOFTWARE VERSION 38
6. OPTIONAL EQUIPMENT 39
6.1. EXTERNAL MODEM (KIT) 39
6.2. ANTENNA 39
6.3. ADAPTER CABLE 39
7. ALARMING AND SUPERVISION 40
7.1. ALARM LEDS 40
7.2. DISPLAY AND RESET & INSTALLATION ASSISTANCE BUTTON 41
8. APPENDIX 43
8.1. ELECTRICAL SPECIFICATIONS 43
8.2. ENVIRONMENTAL AND SAFETY SPECIFICATIONS 44
8.3. MECHANICAL SPECIFICATIONS 44
8.4. SPARE PARTS LIST 45
9. LIST OF CHANGES 45
10. INDEX 46

Figures and Tables
M0139AGH_MR8518_8518 Manual for MR8518/8518 Page 5
FIGURES AND TABLES
figure 3-1 MR8518/8518 block diagram.................................................................... 16
figure 3-2 Connectors of MR8518/8518.................................................................... 17
figure 4-1 MRx18, position of screws for wall mounting............................................ 18
figure 4-2 Power connection of DC connector with MR8518/8518 ........................... 19
figure 5-1 Login page................................................................................................ 22
figure 5-2 Menu-bar buttons ..................................................................................... 23
figure 5-3 Status bar................................................................................................. 23
figure 5-4 Status - General & Alarms........................................................................ 24
figure 5-5 Settings - Radio Frequency...................................................................... 27
figure 5-6 Settings - Alarms...................................................................................... 31
figure 5-7 Settings - Modem Control......................................................................... 31
figure 5-8 Settings - LAN connectivity....................................................................... 33
figure 5-9 Settings - User Account............................................................................ 35
figure 5-10 Maintenance........................................................................................... 36
figure 5-11 Logout .................................................................................................... 37
figure 5-12 Upload new software version ................................................................. 38
figure 6-1 Coverage antenna for MRx18, optional equipment .................................. 39
figure 7-1 Display and alarm LEDs........................................................................... 40
figure 7-2 Display with reset button and alarm LEDs................................................ 41
figure 7-3 Display - RSSI.......................................................................................... 42
figure 7-4 Display - Gain UL and DL......................................................................... 42
figure 7-5 Display - Pout UL and DL........................................................................... 42
figure 8-1 Cabinet drawing MR8518/8518................................................................ 44
table 5-1 Menu-bar buttons, description................................................................... 23
table 5-2 Status bar, description............................................................................... 23
table 5-3 Refresh and Auto Refresh buttons ............................................................ 24
table 5-4 Status - General......................................................................................... 25
table 5-5 Status - Alarms.......................................................................................... 26
table 5-6 Radio Frequency – Power......................................................................... 27
table 5-7 Radio Frequency – General....................................................................... 29
table 5-8 Radio Frequency - Auto Gain.................................................................... 30
table 5-9 Settings - Alarms ....................................................................................... 31
table 5-10 Settings - Modem Control........................................................................ 32
table 5-11 LAN Connectivity - General..................................................................... 34
table 5-12 LAN Connectivity - DHCP Settings.......................................................... 34
table 5-13 LAN Connectivity - SNMP Settings.......................................................... 35
table 5-14 Settings - User Account........................................................................... 35
table 5-15 Maintenance - Modem Debugging........................................................... 36
table 5-16 Maintenance - Software Update.............................................................. 37
table 5-17 Maintenance - Webpage Update............................................................. 37
table 7-1 Alarm LEDs ............................................................................................... 40

1. General
Page 6 M0139AGH_MR8518_8518
Manual for MR8518/8518
1.General
1.1.Abbreviations
3GPP 3rd Generation Partnership
Project
ALC Automatic Level Control
AMPS American Mobile Phone System
or Advanced Mobile Phone
System
BCCH Broadcast Control Channel
BITE Built-In Test Equipment
BTS Base Transceiver Station
CDMA Code Division Multiple Access
CEPT Conférénce Européenne des
Postes et Télécommunications
CF Center Frequency
CFO Center Frequency Offset
CFR Code of Federal Regulations
DL Downlink
DoC Declaration of Conformity
EDGE Enhanced Data Rates for GSM
Evolution
ESD Electrostatic Discharge
ETACS Enhanced TACS
ETS European Telecommunication
Standard
ETSI European Telecommunication
Standards Institute
FSK Frequency Shift Keying
GSM Global System for Mobile
Communication
GUI Graphical User Interface
I2C-Bus Inter-Integrated Circuit Bus
(Philips)
ID No Identification Number
IF Intermediate Frequency
LED Light Emitting Diode
LMT Local Maintenance Terminal
LNA Low Noise Amplifier
MCC Mobile Country Code
MNC Mobile Network Code
MR Microwave Repeater
MS Mobile Station
MTBF Mean Time Between Failures
OIP-3 Output Intercept Point of the
3rdOorder
OMC Operation and Maintenance
Center
PA Power Amplifier
PCMCIA Personal Computer Modem
Communication International
Association
PCS Personal Communication
System
PSTN Public Switched Telephone
Network
PSU Power Supply Unit
R&TTE Radio & Telecommunications
Terminal Equipment
Rev Revision
RF Radio Frequency
RLP Radio Link Protocol
RSSI Receive Signal Strength
Indication
RTC Real-Time Clock
RX Receiver
SCL Serial Clock
SDA Serial Data
SMSC Short Message Service Center
TACS Total Access Communication
System
TCH Traffic Channel
TDMA Time Division Multiple Access
TX Transmitter
UE User Equipment
UL Uplink
UMTS Universal Mobile
Telecommunication System
UPS Uninterruptable Power Supply
URL Uniform Resource Locator
VSWR Voltage Standing Wave Ratio

1. General
M0139AGH_MR8518_8518 Manual for MR8518/8518 Page 7
1.2.Health and Safety
1. Caution: High frequency radiation in operation. Risk of health hazards associated
with radiation from the antenna(s) connected to the unit. Implement prevention
measures to avoid the possibility of very close proximity to the antenna(s) while in
operation.
1.3.Property Damage Warnings
1. Notice: Although the repeater is internally protected against overvoltage, it is
strongly recommended to ground (earth) the antenna cables close to the
repeater’s antenna connectors for protection against atmospheric discharge.
2. Notice: ESD precautions must be observed. Before commencing maintenance
work, use the available grounding (earthing) system to connect ESD protection
measures.
3. Notice:Only suitably qualified personnel are allowed to work on this unit and only
after becoming familiar with all safety notices, installation, operation and
maintenance procedures contained in this manual.
4. Notice: Keep operating instructions within easy reach and make them available
to all users.
5. Notice:Read and obey all the warning labels attached to the unit. Make sure that
all warning labels are kept in a legible condition. Replace any missing or damaged
labels.
6. Notice:Only license holders for the respective frequency range are allowed to
operate this unit.
7. Notice: Make sure the repeater settings are correct for the intended use (refer to
the manufacturer product information) and regulatory requirements are met. Do
not carry out any modifications or fit any spare parts, which are not sold or
recommended by the manufacturer.
Unless otherwise agreed to in writing by CommScope, CommScope’s general limited
product warranty (http://www.commscope.com/Resources/Warranties/) shall be the
warranty governing the MRx18 Units, including the installation, maintenance, usage
and operation of the MRx18 Units.

1. General
Page 8 M0139AGH_MR8518_8518
Manual for MR8518/8518
1.4.Compliance
1. Notice: For installations, which have to comply with FCC RF exposure
requirements, the antenna selection and installation must be completed in a way
to ensure compliance with those FCC requirements. Depending on the RF
frequency, rated output power, antenna gain, and the loss between the repeater
and antenna, the minimum distance D to be maintained between the antenna
location and human beings is calculated according to this formula:
]/[
][
][ 2
4cmmW
mW
cm PD
P
D∗∗ =
π
where
•P (mW) is the radiated power at the antenna, i.e. the max. rated repeater
output power in addition to the antenna gain minus the loss between the
repeater and the antenna.
•PD (mW/cm²) is the allowed Power Density limit acc. to 47 CFR 1.1310 (B)
for general population / uncontrolled exposures which is
oF (MHz) / 1500 for frequencies from 300MHz to 1500MHz
o1 for frequencies from 1500MHz to 100,000MHz
RF exposure compliance may need to be addressed at the time of licensing, as
required by the responsible FCC Bureau(s), including antenna co-location
requirements of 1.1307(b)(3).
2. Notice:For installations which have to comply with European EN50385 exposure
compliance requirements, the following Power Density limits/guidelines (mW/cm²)
according to ICNIRP are valid:
o0.2 for frequencies from 10 MHz to 400 MHz
oF (MHz) / 2000 for frequencies from 400 MHz to 2 GHz
o1 for frequencies from 2 GHz to 300 GHz
3. Notice: Installation of this equipment is in full responsibility of the installer, who
has also the responsibility, that cables and couplers are calculated into the
maximum gain of the antennas, so that this value, which is filed in the FCC Grant
and can be requested from the FCC data base, is not exceeded. The industrial
boosters are shipped only as a naked booster without any installation devices or
antennas as it needs for professional installation.

1. General
M0139AGH_MR8518_8518 Manual for MR8518/8518 Page 9
4. Notice: For installations which have to comply with FCC/Industry Canada
requirements:
English:
This device complies with FCC Part 15 and Industry Canada license exempt RSS
standard(s). Operation is subject to the following two conditions: (1) this device
may not cause interference, and (2) this device must accept any interference,
including interference that may cause undesired operation of the device.
This device complies with Health Canada’s Safety Code. The installer of this
device should ensure that RF radiation is not emitted in excess of the Health
Canada’s requirement. Information can be obtained at http:
//www.hc-sc.gc.ca/ewh-semt/pubs/radiation/radio_guide-lignes_direct-eng.php.
Changes or modifications not expressly approved by the party responsible for
compliance could void the user’s authority to operate the equipment.
French:
Cet appareil est conforme à FCC Partie15 d’Industrie Canada RSS standard
exempts de licence (s). Son utilisation est soumise à Les deux conditions
suivantes: (1) cet appareil ne peut pas provoquer d’interférences et (2) cet
appareil doit accepter Toute interférence, y compris les interférences qui peuvent
causer un mauvais fonctionnement du dispositif.
Cet appareil est conforme avec Santé Canada Code de sécurité 6. Le
programme d’installation de cet appareil doit s’assurer que les rayonnements RF
n’est pas émis au-delà de I’exigence de Santé Canada. Les informations peuvent
être obtenues:
http://www.hc-sc.gc.ca/ewh-semt/pubs/radiation/radio_guide-lignes_direct-
fra.php
Les changements ou modifications non expressément approuvés par la partie
responsable de la conformité pourraient annuler l'autorité de l'utilisateur à utiliser
cet équipement.
5. Notice: The power supply of the unit complies with Overvoltage Category II. It
also complies with the surge requirement according to EN 61000-4-5 (fine
protection); however, installation of an additional medium (via local supply
connection) and/or coarse protection (external surge protection) is recommended
depending on the individual application in order to avoid damage caused by
overcurrent.
For Canada and US, components used to reduce the Overvoltage Category shall
comply with the requirements of IEC 61643-series. As an alternative, components
used to reduce the Overvoltage Category may comply with ANSI/IEEE C62.11,
CSA Certification Notice No. 516, CSA C22.2 No. 1, or UL 1449. Suitability of the
component for the application shall be determined for the intended installation.
6. Notice: Corresponding local particularities and regulations must be observed. For
national deviations, please refer to the respective documents that can be
downloaded as well.

1. General
Page 10 M0139AGH_MR8518_8518
Manual for MR8518/8518
7. Note: For a Class A digital device or peripheral:
This equipment has been tested and found to comply with the limits for a Class A digital
device, pursuant to part 15 of the FCC Rules. 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.
8. Note: For a Class B digital device or peripheral:
This equipment has been tested and found to comply with the limits for a Class B digital
device, pursuant to part 15 of the FCC Rules. These limits are designed to provide
reasonable protection against harmful interference in a residential installation. This
equipment generates, uses and can radiate radio frequency energy and, if not installed
and used in accordance with the instructions, may cause harmful interference to radio
communications. However, there is no guarantee that interference will not occur in a
particular installation. If this equipment does cause harmful interference to radio or
television reception, which can be determined by turning the equipment off and on, the
user is encouraged to try to correct the interference.
9. Note: This unit complies with European standard EN60950.
Equipment Symbols Used / Compliance
Please observe the meanings of the following symbols used in our equipment and
the compliance warnings:
Symbol
Compliance
Meaning / Warning
--- FCC
For industrial (Part 20) signal booster:
WARNING: This is NOT a CONSUMER device. It is
designed for installation by FCC LICENSEES and
QUALIFIED
INSTALLERS. You MUST have an FCC
LICENSE 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.
For (Part 90) signal booster:
WARNING: This is NOT a CONSUMER device. It is
designed for installation by FCC LICENSEES and
QUALIFIED INSTALLERS. You MUST have an FCC
LICENSE or express consent of an FCC Licensee to
operate this device. You MUST register Class B signal
boosters (as defined in 47 CFR 90.219) online at
www.fcc.gov/signal-boosters/registration. Unauthorized use
may result in significant forfeiture penalties, including
penalties in excess of
$100,000 for each continuing
violation.
CE
Alert sign to R&TTE
To be sold exclusively to mobile operators or authorized
installers – no harmonized
frequency bands, operation
requires license. Intended use: EU and EFTA countries
Indicates conformity with the R&TTE directive 1999/5/EC
certified by the notified body no. 0700.

1. General
M0139AGH_MR8518_8518 Manual for MR8518/8518 Page 11
1.5.About CommScope
CommScope is the foremost supplier of one-stop, end-to-end radio frequency (RF)
solutions. Part of the CommScope portfolio are complete solutions for wireless
infrastructure from top-of-the-tower base station antennas to cable systems and
cabinets, RF site solutions, signal distribution, and network optimization. For patents
see www.cs-pat.com.
CommScope has global engineering and manufacturing facilities. In addition, it
maintains field engineering offices throughout the world.
Andrew Wireless Systems GmbH based in Buchdorf/Germany, which is part of
CommScope, is a leading manufacturer of coverage equipment for mobile radio
networks, specializing in high performance, RF and optical repeaters. Our optical
distributed networks and RF repeater systems provide coverage and capacity
solution for wireless networks in both indoor installations and outdoor environments,
e.g. tunnels, subways, in-trains, airport buildings, stadiums, skyscrapers, shopping
malls, hotels and conference rooms.
Andrew Wireless Systems GmbH operates a quality management system in
compliance with the requirements of ISO 9001 and TL 9000. All equipment is
manufactured using highly reliable material. To maintain highest quality of the
products, comprehensive quality monitoring is conducted at all fabrication stages.
Finished products leave the factory only after a thorough final acceptance test,
accompanied by a test certificate guaranteeing optimal operation.
This product meets the requirements of the R&TTE directive and the Declaration of
Conformity (DoC) itself. A current version of the CE DoC can be downloaded as well.
Any updated version of the DoC is available upon request from the local sales offices
or directly from CommScope via the local Customer Support at one of the addresses
listed in the following chapter.
According to the DoC, our "CE"-marked equipment can be used in all member
states of the European Union.
Note: Exceptions of and national deviations from this intended use may be
possible. To observe corresponding local particularities and regulations,
please refer to the respective documents (also in national language)
which can be downloaded as well.
To make the most of this product, we recommend you carefully read the instructions
in this manual and commission the system only according to these instructions.
For technical assistance and support, please also contact the local office or
CommScope directly at one of the addresses listed in the following chapter.

1. General
Page 12 M0139AGH_MR8518_8518
Manual for MR8518/8518
1.6.International Contact Addresses for Customer Support
Canada
A
M
E
R
I
C
A
S
United States
CommScope Canada
Andrew LLC, A CommScope Company
Mail
505 Consumers Road, Suite 803
Toronto M2J 4V8, Canada
Mail
620 North Greenfield Parkway
Garner, NC 27529, U.S.A.
Phon
e
[phone] (Office)
[phone] (Cell)
Phone [phone]
Fax
[phone]
Fax
[phone]
E-mail
[e-mail]
E-mail
[e-mail]
Caribbean & South American Region
Caribbean & Central American Region
CommScope Cabos do Brasil Ltda.
CommScope Mexico S.A. de C.V.
Mail
CALA Tech Support for Distributed
Coverage & Capacity Solutions (DCCS)
products:
Rua Guaporanga, 49
Praça Seca – Rio de Janeiro – RJ
ZIP: 21320-180, Brazil
Mail
CALA Tech Support for Distributed
Coverage & Capacity Solutions
(DCCS) products:
Av. Insurgentes Sur 688, Piso 6
Col. Del Valle, CP: 03100
Mexico City, Mexico
Phone
[phone] (Cell)
[phone] (Office)
Phone [phone] (Office)
Fax
+ 55-15-2102-4001
Fax
[phone]
E-mail
[e-mail]
E-mail
[e-mail]
China, India and Rest of Asia
A
P
A
C
Australia & New Zealand
Andrew International Corporation
Andrew Corporation (Australia) Pty Ltd.
Mail
Room 915, 9/F
Chevalier Commercial Centre
8 Wang Hoi Rd
Kowloon Bay, Hong Kong
Mail
Unit 1
153 Barry Road
Campbellfield
VIC 3061, Australia
Phone
[phone]
Phone
[phone]
Fax
[phone]
Fax
[phone]
E-mail
[e-mail]
E-mail
[e-mail]
Middle East & North Africa
Africa
&
Middle
East
South Africa
CommScope Solutions International Inc.
(Branch)
Andrew Wireless Solutions Africa
(PTY) LTD
Mail
PO Box 48 78 22
Unit 3206, Floor 32,
Jumeirah Business Center 5,
Jumeirah Lakes Towers,
Dubai, United Arab Emirates
Mail
11 Commerce Crescent West
Eastgate, Sandton
PO Box 786117
Sandton 2146
South Africa
Phone
[phone]
Phone
+ 27 11-719-6000
Fax
[phone]
Fax
+ 27 11-444-5393
E-mail
[e-mail]
E-mail
[e-mail]

1. General
M0139AGH_MR8518_8518 Manual for MR8518/8518 Page 13
United Kingdom
E
U
R
O
P
E
Scandinavia
Andrew Wireless Systems UK Ltd
Andrew Norway (AMNW)
Mail
Unit 15, Ilex Building
Mulberry Business Park
Fishponds Road
Wokingham Berkshire
RG41 2GY, England
Mail
P.O. Box 3066
Osloveien 10
Hoenefoss 3501
Norway
Phone
[phone]
Phone
+ 47 32-12-3530
Fax
[phone]
Fax
+ 47 32-12-3531
E-mail
[e-mail]
E-mail
[e-mail]
Germany
France
Andrew Wireless Systems GmbH
CommScope France
Mail
Industriering 10
86675 Buchdorf
Germany
Mail
Immeuble Le Lavoisier
4, Place des Vosges
92052 Courbevoie, France
Phone
[phone]
Phone
[phone]
Fax
[phone]
Fax
[phone]
E-mail
[e-mail]
E-mail
[e-mail]
Austria
Switzerland
Andrew Wireless Systems (Austria) GmbH
CommScope Wireless Systems AG
Mail
Weglgasse 10
2320 Wien-Schwechat
Austria
Mail
Tiergartenweg 1
CH-4710 Balsthal
Switzerland
Phone
[phone]
Phone
[phone]
Fax
[phone]
Fax
[phone]
E-mail
[e-mail]
E-mail
[e-mail]
Italy
Iberia Region - Spain & Portugal
CommScope Italy S.r.l., Faenza, Italy
Andrew España S.A. A CommScope Company
Mail
Via Mengolina, 20
48018 Faenza (RA)
Italy
Mail
Avda. de Europa, 4 - 2ª pta.
Parque Empresarial de la Moraleja
Alcobendas, Madrid 28108, Spain
Phone
[phone]
Phone
[phone]
Fax
[phone]
Fax
[phone]
E-mail
[e-mail]
E-mail
[e-mail]
Czech Republic
CommScope Solutions Czech Republic
C-Com, spol. s r.o
Mail
U Moruší 888
53006 Pardubice, Czech Republic
Phone
[phone] (Office)
[phone] (Mobile)
Fax
[phone]
E-mail
[e-mail]

2. Introduction
Page 14 M0139AGH_MR8518_8518
Manual for MR8518/8518
2.Introduction
2.1.Purpose
The MR8518/8518 miniRepeater is a bi-directional amplifier used to enhance signals
between a mobile and a base station in a mobile network. It has been designed to
increase signal strength in small and medium sized areas such as offices, shops, and
basements. By boosting the signal level, the MR8518/8518 increases indoor
coverage and allows high data rate connectivity.
If weak signal transmissions occur within the coverage area due to indoor
applications, topological conditions or distance from the transmitter, a repeater is
used to extend transmission range. In the downlink path, the repeater picks up the
signals from a donor antenna of a BTS/Node B, amplifies and re-transmits it into the
required dark spot. In the uplink path the repeater picks up the signals from a
mobile/User Equipment (UE) and re-transmits it to the BTS/Node B.
2.2.The MR8518/8518 miniRepeater
CommScope’s MR8518/8518 miniRepeater gives designers a simple tool to solve
their small area coverage and performance issues.
The MR8518/8518 is easy to install. Also, a web-based Graphical User Interface
(GUI) simplifies commissioning and configuring the equipment. The RF link (donor)
towards the base station is typically fed from an outdoor antenna while the coverage
area is fed by an indoor antenna.
The MR8518/8518 supports two segments within the 850 MHz frequency band. The
segments are equipped with a fixed bandwidth filter that are tailored for applications
where Band A and Band AE or Band B and BE are to be amplified. However, the
filters can be shifted within the 850 MHz frequency band by changing the start
frequency.
Auto Gain functionality enables automatic gain adjustment in order to maximize
performance; however, gain may be set manually if desired.
An alarm interface with a display and LEDs indicates the status of the equipment
locally. Moreover, the status and alarms of the MR8518/8518 can be queried in the
web-based GUI.
The MR8518/8518 has an optional remote-monitoring function that provides
equipment alarming and basic configuration settings via a GSM-SMS. Alarm SMSs
(including heartbeat) can be sent to the common Andrew OMC or to any standard
SMS receiver (even a mobile phone). Moreover, the MR8518/8518 can be connected
to LAN.

2. Introduction
M0139AGH_MR8518_8518 Manual for MR8518/8518 Page 15
Features at a glance:
•Two segments with fixed bandwidth
•Easy to install due to light weight, small dimensions and Auto Gain
functionality
•Integrated combiner/crossband coupler, no external devices required,
common antenna ports for both segments equipped
•Easy commissioning via web-based GUI
•Automatic Level Control (ALC)
•Fixed bandwidth to match band A and AE or band B and BE
•Adjustable start frequency
•Automatic power down/up option at user-defined DL RSSI threshold
•LEDs for local alarm indication
•RSSI and status indication via display
•Optional remote control via SMS
•Connection to LAN

3. Functional Description
Page 16 M0139AGH_MR8518_8518
Manual for MR8518/8518
3. Functional Description
3.1.General
The MR8518/8518 miniRepeater is a repeater operating in 850 MHz frequency
range. The operation principle of the dual-segment is depicted in the following block
diagram:
figure 3-1 MR8518/8518 block diagram
E0783BD

3. Functional Description
M0139AGH_MR8518_8518 Manual for MR8518/8518 Page 17
3.2.Design and Connectors
figure 3-2 Connectors of MR8518/8518
Note: SMA connectors have a specified torque of 0.45 N-m. Use an appropriate
tool to fasten and unfasten these connectors. Do not over-tighten the
connectors or screws.
RF donor antenna
connector, BTS, SMA
DC connector
Modem connector
DC + Data
Reset-and-
installation-assistance
button
RF coverage antenna
connector, mobile, SMA
Ethernet
connector
RF modem connector SMA,
25 dB coupling loss

4. Installation and Commissioning
Page 18 M0139AGH_MR8518_8518
Manual for MR8518/8518
4. Installation and Commissioning
4.1.Mechanical Installation
4.1.1. Health and Safety for Mechanical Installation
1. Caution: Risk of serious personal injury by equipment falling due to improper
installation. The installer must verify that the supporting surface will safely
support the combined load of the electronic equipment and all attached hardware
and components. The screws and dowels (wall anchors) used should also be
appropriate for the structure of the supporting wall.
4.1.2. Property Damage Warnings for Mechanical Installation
1. Attention: Do not install the unit in a way or at a place where the specifications
outlined in the Environmental and Safety Specifications leaflet of the supplier are
not met.
2. Attention: It is the responsibility of the installer to verify that the supporting
surface will safely support the combined load of the electronic equipment and all
attached hardware and components and to ensure that the unit is safely and
securely mounted.
3. Notice: Use proper mounting hardware depending on the structure of e.g. the
wall where the unit will be installed.
figure 4-1 MRx18, position of screws for wall mounting
4.2.Electrical Installation
1. Notice: The electrical installation has to be performed in accordance with the
safety regulations of the local authorities. Due to safety reasons, the electrical
installation must be performed by qualified personnel only. The repeater must not
be opened.
2. Notice: Observe the labels on the front panels before connecting or
disconnecting any cables.
Position of screws
Mount the
MR8518/8518
to a wall with
tw
o screws
(spacers not
required):

4. Installation and Commissioning
M0139AGH_MR8518_8518 Manual for MR8518/8518 Page 19
Connect the antenna cables to the antenna connectors and the antennas.
Use only the power supply delivered with the unit. Do not modify the power
supply unit (PSU) and cable.
Do not mount the PSU to the ceiling!
Connect the DC connector of the power supply and provide mains to the power
supply. Ensure the DC connector is plugged in correctly as in the following
illustrations.
Plug in the male DC connector by
inserting the lug into the guide at
the DC connector with the arrow-
molded side on top
, see
illustrations.
The DC connector of the cable is
equipped with a locking mechanism.
The system of locking the plug is based
on a “push-
pull” mechanism. The
locking sleeve has to be pulled back to
free the connection.
figure 4-2 Power connection of DC connector with MR8518/8518
Align the donor antenna towards the BTS. The MR8518/8518 provides antenna
alignment assistance. Therefore, press the "Reset and installation assistance"
switch (see chapter 3.2 Design and Connectors) for at least four seconds after (!)
the boot process has been finished (i.e. red ALC LED is blinking for four
seconds). This will set the gain to max. value and disable Auto Gain for about four
minutes. The status LED will be blinking red/green. Align the donor antenna
towards the BTS tower to reach the highest RSSI level possible. Check the RSSI
level at the display (see figure 7-3). By pushing the reset-and-installation-
assistance switch the RSSI level of each assembled segment (up to three
segments) can be displayed (see chapter 7.2 Display and Reset & Installation
Assistance Button). After four minutes Gain and Auto Gain are adjusted to the
values prior to the activation of the antenna alignment.
Align the coverage antenna.
Locking sleeve
Pull back
locking sleeve
to disconnect!
Lug
Guide of DC connector
Lug
Insert lug into guide
Insert with
arrow-molded
side on top

4. Installation and Commissioning
Page 20 M0139AGH_MR8518_8518
Manual for MR8518/8518
As the default settings of the repeater are set to Auto Gain enabled, only the
frequencies have to be adjusted. Additionally, the repeater can be customized with a
laptop or PC via Ethernet connector:
For local connection, connect the straight CAT 6 patch cable to the Ethernet
connector of the MRx18 and the network connector of a laptop or PC. For MRx18
connection to a LAN network connect the cross-over cable. (Note: The MRx18
operates at 10 Mbps and full-duplex).
Start a browser (e.g. Internet Explorer recommended versions 10 or 11, or Mozilla
Firefox, recommended versions 35 up to 44) and enter URL: http://192.168.1.1.
For IE10/IE11 it might be necessary to set the “Browser Mode” to Compatibility
View as explained at the end of this chapter.
Note: If the connection cannot be established, it might be necessary to
set the IP address of the computer or laptop (Start => Settings =>
Control Panel => Network Connections => Your Network-Connection
=> Properties => Internet Protocol (TCP/IP) => Properties => Enable
‘Use the following IP address’ and enter an IP address, e.g.
192.168.1.10). Do not use IP addresses 192.168.1.2 or 192.168.1.1!
Before changing the settings in the Internet Protocol (TCP/IP) =>
Properties, please write down the current settings. Ensure no proxy
server for internet access is activated any longer, either.
After having finished setting up the MRx18, please change all the TCP/IP
settings to the original ones BEFORE re-connecting your computer to
any other network. Re-activate the proxy settings if necessary, too.
Enter User name: MRx18 and password: MRx18 (case-sensitive).
Commission the repeater according to the description in the following chapter
and save settings to the repeater.
Disconnect the CAT 6 patch cable and check LEDs and display of the repeater.
STOP