Andrew Wireless Innovations Group MRx03P Users manual

SER´S MANUAL FOR BAND SELECTIVE REPEATERS MRX

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User´s manual for

band selective repeater

MRx03P

03P

User'sManual.doc Id.-No.:154999 Page 1 22-Jan-01

SER´S MANUAL FOR BAND SELECTIVE REPEATERS MRX

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Copyright  MIKOM, Buchdorf 2001

All rights reserved.

No parts of this publication may be reproduced,

stored in a retrieval system, transmitted in any form or by any means,

electronical, mechanical photocopying, recording or otherwise,

without prior written permission of the publisher.

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TABLE OF CONTENTS

1. GENERAL 7

1.1. LIST OF ABBREVIATIONS 7

1.2. HEALTH AND SAFETY WARNINGS 8

1.3. PREAMBLE 9

1.4. LIST OF INTERNATIONAL SALES OFFICES 10

2. FUNCTIONAL DESCRIPTION 11

2.1. GENERAL 11

2.2. REPEATER DESIGN 11

2.3. COMPONENTS OF THE MRX03P 12

2.3.1. Duplexer 12

2.3.2. Measuring Aids 12

2.3.3. Conversion Module 13

2.3.4. Final Amplifier 14

2.3.5. Control Module 15

2.3.6. Motherboard 16

2.3.7. Power Supply 17

3. OPTIONAL EQUIPMENT 18

3.1. MODEM 18

3.1.1. Initstrings 18

3.1.2. PSTN Modem 19

3.1.3. Wireless Modem 20

3.2. EXTERNAL ALARMS 21

3.3. BATTERY BACKUP 22

4. INSTALLATION 23

4.1. MECHANICAL INSTALLATION 23

4.1.1. General 23

4.2. WALL MOUNTING PROCEDURE 24

4.2.1. Pole Mounting Procedure 25

4.3. ELECTRICAL INSTALLATION 27

4.3.1. Grounding 27

4.3.2. Mains Power Supply 27

4.3.3. Antennas Connections 28

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5. COMMISSIONING 29

5.1. PREPARATION 29

5.1.1. General 29

5.1.2. BCCH-Channel 29

5.1.3. Antenna Isolation 30

5.2. BOOT PROCESS 31

5.3. DIP-SWITCHES 32

5.4. REMOTE SETTINGS 33

5.4.1. Local Login 33

5.4.2. Remote Login 35

5.5. MANUAL SETTINGS 36

5.6. LEVELLING OF THE REPEATER 38

6. ALARMS 39

6.1. BITE AND ALARMS 39

6.2. HANDLING OF ALARMS 39

6.3. STATUS REPORT 39

7. TROUBLE SHOOTING 40

7.1. ERROR INDICATION 40

7.2. BOOT PROCESS 41

7.3. ALARM MONITORING WITH THE ALARM HISTORY 41

7.4. POWER SUPPLY 41

7.5. GENERAL REMARKS 42

8. MAINTENANCE 43

8.1. GENERAL 43

8.2. REPLACEMENT OF THE FUSES 44

8.3. REPLACEMENT OF THE MAINS CABLE 44

8.4. REPLACEMENT OF THE RAM / RTC BATTERY 45

8.5. REPLACEMENT OF THE BATTERY BACKUP MODULE 47

8.6. DUPLEXER 48

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8.7. CONVERSION MODULE 48

8.8. CONTROL MODULE SM 2009 49

8.9. POWER SUPPLY 49

8.10. CONNECTING BOARD 50

9. APPENDIX 51

9.1. ELECTRICAL SPECIFICATIONS 51

9.1.1. Specifications of MR703P 51

9.1.2. Specifications of MR803P 52

9.2. MECHANICAL SPECIFICATION 53

9.3. ENVIRONMENTAL AND SAFETY SPECIFICATIONS 53

9.4. SPARE PARTS LISTS 54

9.4.1. Spare Parts List of MR703P 54

9.4.2. Spare Parts List of MR803P 55

9.5. INSTALLATION DRAWING OF THE REPEATER 56

9.6. LAYOUT OF THE REPEATER LID 57

9.7. LAYOUT OF THE REPEATER HEAT SINK 58

10. INDEX 59

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LIST OF FIGURES AND TABLES

figure 2-1 Configuration of a MRx03P...................................................................................11

figure 2-2 Duplexer.....................................................................................................................12

figure 2-3 Conversion module .................................................................................................13

figure 2-4 Final amplifier ...........................................................................................................14

figure 2-5 Control module .........................................................................................................15

figure 2-6 Motherboard..............................................................................................................16

figure 2-7 Power supply ............................................................................................................17

figure 1-1 Location of the PSTN Modem...............................................................................19

figure 1-2 Modem connection on the duplexer ....................................................................20

figure 3-3 Location of external alarm clamps.......................................................................21

figure 3-4 Location of the battery backup module...............................................................22

figure 4-1 Installation drawings of a repeater.......................................................................24

figure 4-2 MIKOM pole mounting kits. ...................................................................................25

figure 4-3 Grounding bolt ..........................................................................................................27

figure 4-4 Top view of antenna connections ........................................................................28

figure 5-1 Control module – Position of LEDs......................................................................31

figure 5-2 Control module – Position of the DIP-switches.................................................32

figure 5-3 Motherboard..............................................................................................................36

figure 8-1 Fuse replacement....................................................................................................44

figure 8-2 Connecting board ....................................................................................................44

figure 8-3 Cable gland ...............................................................................................................45

figure 8-4 Position of RAM/RTC battery................................................................................46

figure 8-5 Battery backup module...........................................................................................47

figure 8-6 Connecting board ....................................................................................................50

figure 9-1 Installation drawing of MRx03P............................................................................56

figure 9-2 Repeater lid...............................................................................................................57

figure 9-3 Repeater heat sink ..................................................................................................58

table 1-1 Standard initstrings for modems............................................................................18

table 5-1 LED indication during boot process......................................................................31

table 5-2 DIP-switches of control module .............................................................................32

table 5-3 Rotary switches of the motherboard.....................................................................37

table 9-1 Specification of MR703P.........................................................................................51

table 9-2 Specification of MR803P.........................................................................................52

table 9-3 Spare parts list of MR703P.....................................................................................54

table 9-4 Spare parts list of MR803P.....................................................................................55

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1. GENERAL

1.1. LIST OF ABBREVIATIONS

ALC Automatic Level Control
BCCH Broadcast Control Channel
BITE Built In Test Equipment
BTS Base Transceiver Station
DL Downlink
ESD Electrostatic Discharge
ETS European Telecommunication Standard
I2C-Bus Inter Integrated Circuit Bus (Philips)
Id.-No. Identification Number
MR MIKOM Repeater
MS Mobile Station
OMC Operation and Maintenance Center
PCMCIA Personal Computer Modem Communication International Association
PCS Personal Communication System
PSTN Public Switched Telephone Network
Rev Revision
RF Radio Frequency
SCL Serial Clock
SDA Serial Data
UL Uplink

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1.2. HEALTH AND SAFETY WARNINGS

∗ Note: The electrical installation has to be performed in accordance with

the safety regulation of the local authorities. Due to safety
reasons, the electrical installation must be carried out by qualified
personnel. The cover of this unit should not be opened while
power is applied. Subsequent installation, commissioning and
maintenance activities that require the unit to be powered with the
cover open shall only be carried out by suitably qualified
personnel.

∗ Note: The grounding of the unit has to be performed by all means. A

grounding bolt is provided at the outside of the cabinet to connect
the earth bonding cable.

∗ Note: Make sure that a suitable mounting surface is used. Only adequate

manpower is allowed to handle the system.

∗ Note: ESD precautions must be observed! Before maintenance work, use

the available grounding system to connect ESD protection
measures.

∗ Note: Due to power dissipation, the repeater may heat up the air volume

inside the cabinet and reaches a very high temperature Therefore,
it is recommended to mount the repeater in the vertical plane to a
wall or a mast without additional enclosure to provide sufficient
ventilation. Between the housing and the wall, a minimum distance
must be kept to provide air circulation.

Note: Close the repeater housing only after a thorough control of the

∗

cable layout to avoid any damage of the cables.

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1.3. PREAMBLE

MIKOM is a leading manufacturer of coverage equipment for mobile radio networks,
specializing in low cost, high performance, RF and optical repeaters. Our optical
distributed networks and RF repeater systems provide coverage for every
application; outdoor use, indoor installations, tunnels, subways and many more.

MIKOM has engineering and manufacturing facilities in Germany, Italy and the USA.
In addition, MIKOM maintains many field engineering and sales offices throughout
the world.

All equipment is manufactured using only highly reliable materials. In order to ensure
constant first-rate quality of the products, a comprehensive quality assurance has
been conducted at all fabrication stages. Every component leaves the factory only
after a thorough final acceptance test, accompanied by a test certificate guaranteeing
optimal function.

Any intervention must be carried out by authorized persons only. If technical
assistance for the product is required, please contact the local sales office or contact
MIKOM directly at one of the following addresses:

MIKOM GmbH
Industriering 10
86675 Buchdorf

Germany

Tel: [phone]

Fax: [phone]

E-mail: [e-mail]

http://www.mikom.com

for The Americas:

MIKOM US

Phone: [phone]

E-mail: [e-mail]

When set-up is performed according to this manual, the system will operate without
complications for a significant length of time.

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1.4. LIST OF INTERNATIONAL SALES OFFICES

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Allen Telecom Inc.

31225 Bainbridge Road,
Suite J, Cleveland
Ohio 44 139-2293
USA

Phone: [phone]
FAX: [phone]

FOREM S.p.A.

Via Archimede 22/24
20041, Agrate Brianza
Milan
Italy

Phone: [phone]
FAX: [phone]

AT Canada

1815 Ironstone Manor, # 12
Pickering, Ontario L1W 3W9
Canada

Phone: [phone]
FAX: [phone]

Allen Telecom Pty Ltd

6 Stuart Street
Padstow NSW 2211
Australia

Phone: [phone]
FAX: [phone]

AT Singapore

80 Marine Parade Road
#19-1 Parkway Parade
Singapore 449269

Phone: [phone]
FAX: [phone]

FOREM UK
Unit D

Castle Industrial Park
Pear Tree Lane, Newbury
RG 14 2EZ, Berkshire
U.K.

Phone: [phone]
FAX: [phone]

Forem France

Z.I. des Ebisoires
78370 Plaisir
France

Phone: [phone]
FAX: [phone]

AT China

CITIC Building, # 11-04
19 Jianguomenwai Avenue
Beijing 100004
China

Phone: [phone]
FAX: [phone]

AT India
F-1 Adarshini Plaza

93, Adchini
SRI Aurobindo Road
New Delhi-110017
India

Phone: [phone]
FAX: [phone]

MIKOM Austria

Weglgasse 10
2320 Schwechat
Austria

Phone: +43 (1) 706 – 3999
FAX: +43 (1) 706 – 39999

MIKOM Switzerland

Tiergartenweg 1
4710 Balsthal
Switzerland

Phone: [phone]
FAX: [phone]

C-COM Czech Republic

U Morusi 888
530 06 Pardubice-Svitkov
Czech. Republic

Phone: [phone]
FAX: [phone]

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2. FUNCTIONAL DESCRIPTION

2.1. GENERAL

Cellular telephone systems transmit signals in two directions between base
transceiver station (BTS) and mobile stations (MS) within the signal coverage area.

If weak signal transmissions occur within the coverage area because of indoor
applications, topological conditions or distance from the transmitter, a repeater is
used to extend transmission range. In the downlink (DL) path, the repeater picks up
the signal from a donor antenna of an existing cell, processes and retransmits it into
the desired dark spot. In the uplink (UL) direction, the repeater receives a signal from
mobile stations present in its coverage area and forwards them to the corresponding
BTS.

2.2. REPEATER DESIGN

The repeater MRx03P is a band selective amplifier which bi-directionally amplifies
signals between a base transceiver station and mobile stations in the corresponding
network. It can provide highly selective amplification, thus enabling radio coverage in
regions where satisfactory quality of communication is disabled. The following figure
shows the configuration of a MIKOM repeater MRx03P.

figure 2-1 Configuration of a MRx03P

The MRx03P can also be combined with other repeater systems to create a
combined repeater system. When different modules are combined, a common
antenna terminal and a common control interface is available.

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2.3. COMPONENTS OF THE MRX03P

The actual repeater configuration can be seen at the configuration list which is part of
the delivery.

2.3.1. Duplexer

The task of the duplexer is to isolate uplink from downlink, i.e. to separate the
transmitting path from the receiving path. The pass bandwidth of the duplexer is the
entire width of the UL- and DL band of the corresponding network.

Coupler

connect.

figure 2-2 Duplexer

2.3.2. Measuring Aids

With built-in RF probes at the duplexers, test signals can be applied or detected
(see figure 2-2). The probes are provided with different coupling factors, 30 dB for
measurements and 20 dB for the optional modem. Each antenna port is equipped
with one coupler. This facilitates measurements under all operational conditions while
an antenna or a dummy load may be connected.

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2.3.3. Conversion Module

The task of the conversion module is to amplify the received signals and to convert
them into an intermediate frequency. Then, the signals proceed a filter stage
comprising of highly selective filters and run through a digital controllable attenuator.

figure 2-3 Conversion module

Each link of a conversion module is provided with filters which guarantee the high
selectivity. There the desired bandwidth and the desired centre frequency can be set.
By using the same synthesizer frequency, that was used to convert the signals down
to intermediate frequency, the intermediate frequency is mixed up to the original
frequency. The synthesizer is controlled via an I2C-Bus.

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2.3.4. Final Amplifier

The UL- and DL path are amplified by a final amplifier. It is located next to the
conversion module.

figure 2-4 Final amplifier

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2.3.5. Control Module

The control module is a DOS compatible micro computer. The whole communication
between the provider and the repeater can be done via the control module.

The repeater can be controlled remotely or locally via a VT100 terminal or a PC
emulating the VT100 terminal.

To control the repeater remotely, use either the RS232 interface in connection with a
wireless modem or the PCMCIA interface in connection with a modem card and a
mobile or PSTN network adapter. The RS232 interface and the PCMCIA interface
are located on the control module.

Frequency, gain, power down of RF stages and ALC can be controlled and status
messages can be received remotely. In case a PSTN modem or a mobile is
connected, automatic alarm messages can be received.

The data transfer between the control module and the mother board is realized by
the I2C-Bus system.

The I2C-Bus concept was developed by Philips for the serial connection of integrated
circuits within one device. Two wires, serial data (SDA) and serial clock (SCL), carry
information between the devices connected to the bus. Each device is recognized by
a unique address and can operate either as transmitter or receiver.

All MRx03P configuration parameters are non-volatile stored in an EEPROM on the
control module if power supply failure occurs.

figure 2-5 Control module

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2.3.6. Motherboard

The function of the mother board is the communication between the conversion
module and the control module via the I2C-Bus. All signals will be recognized from
the mother board logic.

figure 2-6 Motherboard

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2.3.7. Power Supply

The power supply can be provided by different mains power. An external switch,
mounted on the power supply, is provided to disconnect the repeater from mains
during maintenance work to ensure that all circuits are voltage-free.

The power supply is factory-set and must not be changed. The power supply can be
fuse-protected.

Switch

figure 2-7 Power supply

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3. OPTIONAL EQUIPMENT

The actual repeater configuration can be seen at the configuration list which is part of
the delivery.

3.1. MODEM

The modem option enables the provider to set parameters and to query the status of
each repeater remotely. Furthermore, the modem can be set to send all occurred
alarms of the repeater directly to a provider’s terminal, e.g. to the OMC. This can be
done either via a wireless modem or a PSTN modem (Public Switched Telephone
Network). Thus, the alarms can be evaluated and eliminated promptly. It is possible
to install the wireless modem or the PSTN modem on site!

∫ Check the communication mode between the modem and the terminal. If

necessary, set the following parameters:

Bit rate / bit per second: 9600 baud Number of data bit: 8 bit
Parity bit: No parity Stopbit: 1 stopbit

These settings can only be changed after connection to the terminal. If a different
modem is required or if the quality of the line does not allow to use the set
parameters, the settings have to be changed in PC mode. The same applies for all
other parameters which can be set previously for modem mode by software.

3.1.1. Initstrings

Depending on the provider’s network and the used modem type, it is necessary to
adjust the initstring. The following initstrings are factory set:

Modem Network Initstring
Siemens M1* GSM900 ATE0S7=60S0=2\N6
Siemens M20* GSM900 ATZE0S0=2&S0+IFC=0,0+CBST=7,0,1
Motorola Mobile

PCS1900 AT*P1&F&K4E0S0=2\N0+CBST=7,0,1
MR30 “Surf–Pro”**
MIKOM MO4000 GSM900/1800 ATE0S7=60S0=2;+CBST=7,0,1
PCMCIA-modem PSTN AT&FE0S0=2
* The Siemens M1 modem is no longer available and is replaced by the Siemens M20. In future, it is

assigned to replace all wireless modems working in GSM900/GSM1800 networks by the new MIKOM
modem MO4000.

in connection with Cellect2 Card

**

table 3-1 Standard initstrings for modems

For further details to the initstrings, please refer to the user’s software manual.

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