Andrew Wireless Innovations Group RPT-MR741 GSM channel selective repeater User Manual M0090a0a

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User’s manual for channel selective repeater MRx41
User’s manual
for
channel selective repeater
MRx41
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User’s manual for channel selective repeater MRx41
Copyright  MIKOM, Buchdorf 2000
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
LIST OF FIGURES
LIST OF UNIT SPECIFIC ABBREVIATIONS
CONTENTS OF DELIVERY
HEALTH AND SAFETY WARNINGS
10
PREAMBLE
11
13
INTRODUCTION
1.1
Intended purpose
13
1.2
About the MRx41
13
FUNCTIONAL DESCRIPTION
14
2.1
Channel modules
18
2.2
Termination module
19
2.3
Mother board
20
2.4
Control module SM2009
21
2.5
Duplexer
24
2.6
Combiner
24
2.7
Measuring aids
24
2.8
Power supply
24
FUNCTIONS AND FEATURES
26
3.1
Channel selectivity
26
3.2
DL output power feature
26
3.3
ALC
28
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3.4
BITE and alarms
3.4.1
Handling of alarms
3.4.2
Status report
3.4.3
Severity levels
28
30
31
31
32
OPTIONAL EQUIPMENT
4.1
Remote control via line modem or wireless modem
4.1.1
PSTN modem
4.1.2
Siemens M1 for GSM900, wireless modem kit
4.1.3
Motorola modem for GSM1800, wireless modem kit
4.1.4
Nokia modem for PCS1900, wireless modem kit
32
33
34
34
34
4.2
Battery backup module for modem and control module
37
4.3
LED kit
38
4.4
VSWR module
39
4.5
Traffic statistic module
39
4.6
ICE module
41
4.7
RSSI module
43
4.8
External alarms ( for control module Rev. 07 and higher )
44
INSTALLATION
46
Mechanical specification
46
5.2
46
Environment and safety
5.3
Mechanical installation
5.3.1
Wall mounting procedure
5.3.2
Pole mounting procedure
47
48
49
5.4
Electrical installation
5.4.1
Grounding
5.4.2
Connection of the antenna cables
5.4.3
Power connection
51
51
52
52
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SETTING TO WORK
53
Preparation
53
6.1
6.2
Setting of operational parameters
6.2.1
Manual settings by means of rotary switches
6.2.2
Local settings via personal computer as terminal
6.2.3
Remote control via modem
54
54
56
57
TROUBLE SHOOTING
58
7.1
Error indication
58
7.2
Boot process
59
7.3
Alarm monitoring with the alarm history
59
7.4
Power supply
59
7.5
General remarks
60
MAINTENANCE
61
8.1
General
61
8.2
Replacement of the power supply and mains fuses
62
8.3
Replacement of the mains cable
63
8.4
Replacement of the RAM / RTC battery
64
8.5
Replacement of the battery backup module ( option )
65
8.6
Duplexer
66
8.7
PSTN modem kit ( option )
67
8.8
Channel modules
68
8.9
ICE module
69
8.10
Connecting board
69
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SPARE PARTS LIST
70
9.1
Spare parts for MR341
70
9.2
Spare parts for MR441
72
9.3
Spare parts for MR741
74
10
CONFIGURATION LIST
76
11
APPENDIX
77
11.1
Electrical specifications MR341
77
11.2
Electrical specifications MR441
79
11.3
Electrical specifications MR741
81
11.4
Options for MRx41
83
12
INSTALLATION
84
12.1
Drawing of the repeater
84
12.2
Layout of the repeater ( heat sink )
85
12.3
Layout of the repeater ( lid )
86
12.4
ARFCN / Frequency tables for MR341, MR441 and MR741
87
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LIST OF FIGURES
figure 2-1 One channel system
figure 2-2 Configuration of a two channel system
figure 2-3 Main unit with connected extension unit
figure 2-4 Configuration of a 4 channel system
figure 2-5 Configuration of a 6 channel system
figure 2-6 Configuration of an 8 channel system
figure 2-7 Top view of basic / extension module
figure 2-8 Mounting drawing of the termination module
figure 2-9 Top view of the mother board
figure 2-10 Topview of control module
figure 2-11 DIP-Switch settings
figure 2-12 Mounting position of the power supply
figure 3-1 Channel selectivity
figure 3-2 Measuring range
figure 4-1 Mounting position of PSTN modem kit
figure 4-2 Connection of control module and PSTN modem
figure 4-3 Mounting position of PSTN- and wireless modem
figure 4-4 Connection of the antenna cable
figure 4-5 Battery backup module
figure 4-6 LED kit
figure 4-7 Cable length and antenna spacing
figure 4-8 Configuration of the clamps
figure 5-1 System description
figure 5-2 Clearance distance
figure 5-3 Wall mount procedure
figure 5-4 Distances between main unit and extension units
figure 5-5 Pole mounting kit
figure 5-6 Grounding bolt
figure 6-1 Channel rotary switches and gain setting
figure 8-1 Mounting position of the power supply and mains fuses
figure 8-2 Cable gland
figure 8-3 Position of RAM/RTC battery
figure 8-4 Battery backup module
figure 8-5 PSTN modem kit
figure 8-6 Position of hex coded rotary switches
figure 8-7 Connecting board
figure 12-1 Installation drawing
figure 12-2 Layout of the repeater heat sink
figure 12-3 Layout of the repeater
14
15
16
16
17
17
18
19
20
22
23
25
26
27
33
34
35
35
37
38
41
44
46
47
48
49
50
51
55
62
63
64
65
67
68
69
84
85
86
LIST OF TABLES
table 1-1 List of international sales offices ....................................................................................... 12
table 3-1 List of all available alarms ................................................................................................. 29
table 4-1 List of AT commands ......................................................................................................... 32
table 6-1 LED indication................................................................................................................... 53
table 8-1 Configuration of hex-coded rotary switches....................................................................... 68
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LIST OF UNIT SPECIFIC ABBREVIATIONS
ALC
Automatic Level Control
ARFCN
Absolute Radio Frequency Channel Number
BCCH
Broadcast Control Channel
BITE
Built In Test Equipment
BTS
Base Transceiver Station
DL
Downlink
ETS
European Telecommunication Standard
ICE
Interference Cancellation Equipment
Id.-No.
MIKOM part number
I²C-Bus
Inter Integrated Circuit Bus ( Philips )
LMT
Local Maintenance Timeout
O.C.
Open Collector
OMC
Operation and Maintenance Centre
NiCd
Nickel Cadmium
MR
Mikom repeater
MS
Mobile Station
Rev .
Revision
REPxxxxV1.xx RF repeater software xxxx version 1.xx , e.g. REP1012 V1.04
RF
Radio Frequency
RSSI
Receive Signal Strength Indication
RTC
Real Time Clock
SDA
Serial Data Line of I²C-Bus
SCL
Serial Clock Line of I²C-Bus
UL
Uplink
UPS
Uninterruptible Power Supply
VCC
Repeater internal DC voltage ( + 5V ) for logic devices
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CONTENTS OF DELIVERY
Qty1
Repeater MRx41
Qty1
User’s manual for channel selective repeater MRx41
Qty 1 Software manual for REP1012V1.xx
Qty1
Set of test protocols consisting of an electrical acceptance test protocol
and a safety test protocol applying to the power supply
Qty1
Spare parts kit containing:
- 1 control cable RS232, DB9 female / DB9 female, 3m
- 3 socket head cap screws M3.0 x 30
- 2 tallow-drop screws M5.0 x 25
- 2 tallow-drop screws M2.0 x 6
- 2 tallow-drop screws M3.0 x 5
- 4 straight pins 3.0 x 25
- 2 fuses 2.0 A
- 2 O-ring 4 x 2 mm
- 2 Tyraps
- Silicon heat conducting paste
- 4 special nuts M4
- 1 O-ring 63 x 2 mm
- 1 fuse 10 A ( F )
Tools
- 1 hex socket key, size 2.5
- 1 Torx key
- 1 hex socket screw key , size 4, long
Qty1
Wall mounting sheet
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HEALTH AND SAFETY WARNINGS
F Note:
F Note:
F Note:
F Note:
F Note:
F Note:
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. 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.
The grounding of the unit has to be performed by all means. A
grounding bolt is provided at the outside of the cabinet in order to
connect the earth bonding cable.
Make sure that a suitable mounting surface is used. Only adequate
manpower is allowed to handle the system.
ESD precautions have to be observed! Before maintenance work use
the available grounding system to connect ESD protection
measures.
Due to power dissipation the repeater may heat up the air volume
inside the cabinet and reach 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
in order to provide air circulation.
Close the repeater housing only after a thorough control of the cable
layout, in order to avoid any damage of the cables.
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PREAMBLE
Repeaters are an essential part of an efficient and effective wireless system. They
can enhance outdoor coverage as hole fillers, provide coverage extension service on
highways, canyons and in tunnels at the fraction of the cost of a new cell site.
MIKOM is a leading manufacturer of repeaters. They provide excellent electrical
characteristics, they are light-weight and easy to install. Hence, the MIKOM repeater
is the preferred solution.
Your repeater has been built using highly reliable materials. A comprehensive
quality assurance has been applied to all fabrication steps. This secures constant
quality of the product. Every repeater leaves the factory only after a thorough final
acceptance test, accompanied by a test certificate, which warrants perfect function.
The acceptance test protocol is subject of the delivery and it is fixed to the repeater
lid in order to provide a quick reference for the user.
Any intervention has to be performed by authorised persons only. If you need
technical assistance with the repeater MRx41 contact your local sales office ( see
table 1-1 ) or MIKOM directly at following address:
MIKOM GmbH
Industriering 10
86675 Buchdorf
Germany
Tel: +49 (0) 90 99 - 6 90
Fax: +49 (0) 90 99 - 69 31
email: sales@mikom.com
http://www.mikom.com
Under consideration of all references given in this manual, the repeater should be
taken into service without any complications and should operate trouble-free for a
long time.
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LIST OF INTERNATIONAL SALES OFFICES
Allen Telecom Inc.
Allen Telecom Pty Ltd
Forem France
30500 Bruce Industrial Parkway
Cleveland, Ohio 44 139-3996
USA
6 Stuart Street
Padstow NSW 2211
Australia
Z.I. des Ebisoires
78370 Plaisir
France
Phone: +1 ( 440 ) 349-8400
FAX: +1 ( 440 ) 349-8407
Phone: +61 ( 2 ) 9774-4200
FAX: +61 ( 2 ) 9774-4500
Phone: +33 ( 1 )30-79-15-30
FAX: +33 ( 1 ) 30-55-55-37
FOREM S.p.A.
AT Singapore
AT China
Via Archimede N. 22/24
20041, Agrate Brianza
Milan
Italy
80 Marine Parade Road
#19-1 Parkway Parade
Singapore 449269
CITIC Building, # 11-04
19 Jianguomenwai Avenue
Beijing
China 100004
Phone: +39 ( 039 )605-41
FAX: +39 ( 039 ) 605-4477
Phone: +65 ( 345 ) 8022
FAX: +65 ( 345 ) 8033
Phone: +86 ( 10 ) 6508-3088
FAX: +86 ( 10 )6508-3066
AT Canada
FOREM UK
AT Hong Kong
1815 Ironstone Manor, # 12
Pickering, Ontario L1W 3W9
Canada
Unit D
Castle Industrial Park
Pear Tree Lane
Newbury, Berkshire
U.K. RG 14 2EZ
1603 Remington Center,
23 Hung To road,
Kwun Tong, Kowloon
Hong Kong
Phone: +1 ( 905 ) 839-3474
FAX: +1 ( 905 ) 839-4663
Phone: +44 ( 1635 ) 569-695 Phone: +852 ( 2389 ) 1844
FAX: +44 ( 1635 ) 569-463
FAX: +852 ( 2389 ) 4864
AT India
MIKOM Switzerland
MIKOM Austria
B-256 Ground Floor.
Chittaranjan Park
New Delhi 110019
Tiergartenweg 1
4710 Balzthal
Switzerland
Himbergerstr. 7/3/1
2320Schwechat
Austria
Phone: +91 ( 11 ) 696-3918
FAX: +91 ( 11 ) 652-1648
Phone: +41 ( 6238 ) 61260
FAX: +41 ( 6238 ) 61261
Phone: +43 ( 1 ) 706 – 3999
FAX: +43 ( 1 ) 706 – 39999
table 1-1 List of international sales offices
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1 Introduction
1.1 Intended purpose
Cellular telephone systems transmit signals in two directions between base stations
and mobile telephones 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 path the repeater will pickup the
signal from a donor antenna of an existing cell, amplifies and re-transmits it into the
desired dark spot. In the uplink direction the repeater will receive signals from
mobile stations present in its coverage area and re-transmits them to the
corresponding base station.
1.2 About the MRx41
The repeater MRx41 is a channel selective amplifier, which bi-directionally amplifies
signals between mobile stations and a base station in the GSM900, GSM1800 und
PCS1900 mobile telephone system. It can provide highly selective amplification of
up to 8 channels, thus enabling radio coverage in regions where satisfactory quality
of communication is disabled.
MRx41 modules can also be combined with other MRx41 repeater modules in order
to create a combines GSM900, GSM1800 or PCS1900 repeater system. Other
modules, operating in TACS, ETACS and AMPS are available as well. When
different modules are combined, a common antenna terminal and a common control
interface is available. The basic unit is capable of 2 channels and easily expandable
by adding 2-channel extension units delivered in separate cabinets.
The repeater can be set locally or remotely. For modem operation different
interfaces are available. The design of the repeater comprises a large number of
functions which the operator may monitor via terminal emulation program or the
Mikom OMC software platform. An easy to understand and easy to learn
communication language supports the operator to query status reports from the
repeater or to change settings.
F Note:
It is not possible to combine MRx41 units / modules with MRx40 units
/ modules.
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2 Functional description
The repeater MRx41 can be delivered as an one channel system, expandable up to
an 8 channel system by means of extension units connected to the main unit.
The following block diagrams shall illustrate the different configurations.
Configuration of an one channel system
Figure 2-1 illustrates the configuration of an one channel system which consists of
one basic module ( channel 1 ).
figure 2-1 One channel system
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Configuration of a two channel system
Figure 2-2 illustrates the configuration of a two channel system, containing one
basic module and one extension module.
figure 2-2 Configuration of a two channel system
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figure 2-3 Main unit with connected extension unit
Configuration of a 4 channel system
Figure 2-3 illustrates the configuration of a 4 channel system. For the configuration
of 3 or 4 channels it is necessary to install a combiner module in the main unit. The
block diagram describes the connection between the channel modules and the
combiner module. The mother board and the control module are not included in the
figure below.
figure 2-4 Configuration of a 4 channel system
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Configuration of a 6 channel system
figure 2-5 Configuration of a 6 channel system
Configuration of an 8 channel system
figure 2-6 Configuration of an 8 channel system
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2.1 Channel modules
Two different types of conversion modules have been designed.
1. Basic module: Channel 1, 3, 5 and 7
2. Extension module: Channel 2, 4, 6 and 8
Basic
module
Extension
module
figure 2-7 Top view of basic / extension module
The repeater consists of two amplifier chains, which are connected antiparallel. The
receive path of one direction is connected to the transmit path of the other direction
by a frequency separation unit, in the following denominated as a duplexer, which
combines both signals to an antenna.
The task of the conversion modules is to amplify the receive signals and to convert
them into an intermediate frequency. The signals, then, proceed a filter stage
comprising of highly selective filters, and run through a digital controllable
attenuator. The attenuation can be set in steps of 2 dB, locally or remotely. 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. In case of a breakdown in mains, gain
and frequency data are non-volatile stored in an EEPROM on board.
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The filters of the MRx41 series have the bandwidth of a GSM900; GSM1800 or
PCS1900 channel.
The RF output is protected by limiting the output power with an ALC circuitry inside
the module.
High stability against intermodulation is achieved by isolators before and after the
combiner amplifiers, which inhibits crosstalk into the other amplifier path, thus
preventing the generating of parasitic mixing products. The combiner is followed by
a duplexer.
F Note:
For the exchange of a channel module or the installation of a new
channel module, the slave address of the synthesizer has to be
set ( see chapter 8.8).
2.2 Termination module
To install a repeater system with an odd channel number ( e.g. 1, 3, 5 or 7 channels
) a termination module has to be installed instead of an extension module. This is
necessary in order to keep the gain balance, otherwise the last channel provides 3
dB more gain and output power.
figure 2-8 Mounting drawing of the termination module
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2.3 Mother board
The function of the mother board is the communication between the conversion
modules and the control module via the I²C-Bus but also the support of all necessary
DC voltages and connections. All signals are recognized from the mother board
logic. Furthermore each repeater unit has an allocated address set by means of a
rotary switch. The address of the repeater has been set already in the factory. The
rotary switch is located on the left-hand side of the mother board on top of the board.
F Note:
Don’t adjust this switch unless it is necessary.
Configuration of the rotary switch to set the address of the repeater unit.
0 = Main Unit
1 = Extension Unit 1
2 = Extension Unit 2
3 = Extension Unit
4...F Do not use!
( channel 1 and 2 )
( channel 3 and 4 )
( channel 5 and 6 )
( channel 7 and 8 )
Rotary switch
to set address
of repeater unit
Mother board
DIP-Switches to
activate the
extension I²C-Bus
OFF
ON
figure 2-9 Top view of the mother board
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2.4 Control module SM2009
The control module SM2009 is a DOS compatible micro computer. The whole
communication between the operator and the repeater can be done via the control
module. By using either the RS232 interface or the PCMCIA slot and a mobile the
repeater can be controlled locally or remotely by using a VT100 terminal, or a PC
emulating the VT100 terminal.
Gain of uplink and downlink can be controlled, channels can be set and status
messages can be received remotely.
The data transfer between the control module SM2009 and the mother board is
realised by the I²C-Bus.
The I²C-Bus concept was developed by Philips for the serial connection of integrated
circuits within one device. Two wires, SDA - serial data and SCL - serial clock, carry
information between the devices connected to the bus. The MRx41 I²C-Bus concept
is working with a bit rate of 1.5 kbit/s. All configuration parameters are stored nonvolatile in an EEPROM on the control module, so that in case of a power supply
failure all user settings can be restored completely.
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PCMCIA slot
L1 & L2
L3
(3) Software
information
BBU switch
ON: No BBU
OFF: BBU in
use
RS 232
not in use
(1) PSTN /
Ext. alarms
Solder
bridge in
Rev.09
RAM/RTC
battery
RS 232
(2) MR / MOR
DIP Switch
Mode
switch
figure 2-10 Topview of control module
(See comments at following page)
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User’s manual for channel selective repeater MRx41
(1) External alarms or PSTN modem selection by DIP-Switches
(2) Configuration DIP-Switches for MR or MOR (Master Unit) repeater
(3) Fixed location for labels (control module Id.- No., revision stage, repeater
software, serial number)
ON
4 DO NOT USE!
n.c.
remote
mode
manual
ON
Ext. Alarm 1
Ext. Alarm 2
Ext. Alarm 3
Ext. Alarm 4
OFF(default
values)
auto
n.c.
local mode
auto
OFF
PSTN (a)
PSTN (b)
PSTN (c)
PSTN (d)
ON
MOR
MOR
MOR
MOR
MR
MR
MR
MR
ON
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
OFF
O.C.
O.C.
O.C.
O.C.
O.C.
O.C.
O.C.
O.C.
OFF
MR
MR
MR
MR
MOR
MOR
MOR
MOR
figure 2-11 DIP-Switch settings
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2.5 Duplexer
The receive path of one direction is connected to the transmit path of the other
direction by a frequency separation unit, in the following denominated as a duplexer,
which combines both signals to an antenna.
The task of the duplexer ( see figure 12-2 Layout of the repeater heat sink ) is to
isolate uplink from downlink, i.e. isolate transmit path from receive path. The pass
bandwidth of the duplexer is the required width of the uplink band and the downlink
band respectively in the GSM1800 and PCS1900 band.
2.6 Combiner
After passing through the final stage the signals of all channel groups will be
combined from the combiner module in the UL and in the DL path. The combiner is
only equipped from 3 channels up to 8 channels.and will be followed by the
duplexer. A combiner is not required in an one or two channel repeater.
2.7 Measuring aids
With the built-in RF probe signals can be applied or detected. The probes provide a
coupling factor of 30 dB. This facilitates measurements under all operational
conditions, while an antenna or a dummy load may be connected. Each duplexer is
equipped with one coupler.
2.8 Power supply
The power supply is provided by 230 Vac (optionally 115 Vac or 48 Vdc or 24 Vdc)
mains power. The following figure shows the mounting position of the power supply
in the repeater lid. The secondary voltage is + 8 Vdc for the channel modules and
the mother board logic, + 12 Vdc for the control module.The power supply can be
switched on or off by means of an external switch. The modules of the repeater are
voltage free if the power supply is switched off.
F Note:
To switch the whole repeater voltage free, you have to disconnect
the power lead from mains.
The power supply is factory-set ( with load ) to the following voltages and must not
be changed:
• 7.8 V ± 0.1 V
• 12.4 V ± 0.1 V
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Mains switch
Mains connector
Mains fuses
Power supply
Secondary 10 A fuse
DC voltage
connector
figure 2-12 Mounting position of the power supply
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3 Functions and features
3.1 Channel selectivity
The selectivity of the conversion modules is achieved by highly selective filters,
designed to meet the requirements of a 200 kHz channel and is necessary in order
not to amplify adjacent channels.
Nominal enhancer gain
- 3 dB enhancer gain
- 35 dB
- 35 dB
- 60 dB
- 60 dB
-400kHz
+400kHz
-600kHz
+600kHz
-100kHz
+100kHz
FC
figure 3-1 Channel selectivity
3.2 DL output power
This feature measures the output power in the DL output path of the repeater. If the
output power falls below a certain level an alarm can be released. The power level
and the mask for the alarm can be set by the customer.
The feature shows the provider the output power of the repeater and thus an
optimum of output power can be achieved.
The alarm can be forwarded to an OMC, so that faults and irregularities can be
recognised and eliminated rather quick.
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Technical data:
Measuring range ( see figure 3-2 ) + 20 dBm to max. output power (+ 33 dBm)
in steps of 2 dB from + 20 dBm to + 30 dBm
and in steps of 1 dB from + 30 dBm to max.
output power (+ 33 dBm)
Alarm threshold
can be set in the measuring range
Requirements:
The power output option can be implemented in each MIKOM repeater provided the
repeater operates channel selective in the DL.
Pout alarm threshold
± 2 dBm
Resolution:
± 1 dBm
< 20 dBm
> +33 dBm
Pout low alarm
ALC alarm
+ 20 dBm
+ 30 dBm + 33 dBm
Displayed range
figure 3-2 Measuring range
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3.3 ALC
In order to protect the amplifiers from overload and to prevent the system to
generate spurious emission, the amplifiers have an Automatic Level Control,
designed to limit the output power to a constant value ( max. output power ). A part
of the output power is decoupled, rectified, amplified and used to control an
attenuator network in the conversion modules. In order to avoid oscillation, the
control amplifier has an integrating characteristic.
The threshold for the ALC can be set manually for each motherboard. The ALC
settings affect both modules on the motherboard for UL and DL separately. The ALC
threshold will be set in the factory and can be found on the test data sheet of the
repeater In case a new module will be mounted or a module will be exchanged the
values for the ALC threshold in each link have to be compared. In case they are
different the higher value has to be set. An increase of the input signal results in an
increase of the output signal. If the output power exceeds the required power, an
ALC alarm is triggered.
3.4 BITE and alarms
The Built-In TEst concept comprises the monitoring of the power supplies, the
operational currents in the conversion modules, the mother board and the remote
control interface. Furthermore the temperature of the repeater is monitored.
There are three multicoloured LEDs mounted on the control module. The LED L3
indicates the presence of +12 Vdc in the repeater. Every alarm is indicated by failure
LEDs, L1 and L2 together ( simultaneously ), mounted on the control module ( see
chapter 2.4 ).
In case a hardware failure is detected the concerning hardware module has to be
replaced. If all alarms have been acknowledged the summary error LEDs are set
back from red to green indication.
F Note:
In case of mains power failure all data of the alarm history list are
lost.
In case, a remote alarm should be required, a potential free relay contact can be
used, which is situated on the connecting board.
The following list comprises all available alarms in the repeater. These alarms may
occur in the alarm history list.
NO.
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ALARM ACTIVE STATUS
AMPLIFIER BIAS
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10
11
12
13
13
14
15
16
17
18*
19*
20*
21*
POWER SUPPLY 8 V
POWER SUPPLY 12 V
POWER SUPPLY MAINS
SYNTH
DOOR
VSWR**
ALC
ACCU VOLTAGE**
LITHIUM BATTERY VOLTAGE
OVERTEMP
PWROUT
RSSI**
INVALID LOGIN ATTEMPT
I2C
OSCILLATION**
GAIN REDUCTION**
EXT. ALARM 1**
EXT. ALARM 2**
EXT. ALARM 3**
EXT. ALARM 4**
FAILURE
FAILURE
FAILURE
FAILURE
OPEN
ALARM
FAILURE
LOW
LOW
LOW
LOW
FAILURE
ALARM
WARNING
FAILURE
FAILURE
FAILURE
FAILURE
* Alarm default settings are changeable by software.
** Only available if option is activated by factory.
table 3-1 List of all available alarms
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3.4.1 Handling of alarms
As soon as the software recognises a valid alarm, a message can be transmitted to
the OMC.
If the repeater is operating in modem mode the alarm message ‘MIKOM>
REPEATER REQUIRES OPERATOR ATTENTION’ will be sent via modem to the
terminal or the OMC. The first of two stored telephone numbers will be dialled. In
case a connection cannot be established the second telephone number will be
dialled. If this should be unsuccessful as well, the call will be repeated after a preset delay. Default setting is 10 minutes. The repetition cycle can be set by software.
The alarm check routine is searching every 10 seconds for alarms ( polling
principal ). To decide whether an alarm is a valid alarm it must remain for 5 polling
cycles, only then it will be recognized and entered in the alarm history. As soon as
the alarm is valid the contacts of the alarm relay at the mother board are set.
Additionally two summary error LEDs are set to red light to indicate an alarm. These
LEDs are mounted on the control module ( see figure 12-3 ).
The entry in the alarm history describes the alarm type, the time and the date when
it occurred. It is not possible to locate the defect module, only the reason.
Entered alarms in the alarm list can be acknowledged by simply ringing back and
typing a software command. It is also possible to acknowledge alarms in local
mode. Acknowledged alarms will be indicated with ‘-ACK’. As soon as the alarms
have been acknowledged the alarm relay will be reset and the summary LEDs
switch back to green light again.
If the same alarm cause occurs again, it will be entered in the alarm list ( not
acknowledged ) after 5 polling cycles. An already acknowledged alarm must have
an interruption of at least 5 polling cycles to be detected by the software as a new
alarm. Only then the alarm will be entered again in the alarm history ( not
acknowledged ). There exists no command to delete the alarm history.
The alarm list has a capacity of about 50 alarm entries. If more alarms occur the
oldest message will be deleted first ( FIFO principle ).
In the software exists no alarm clear message, i.e., the repeater sends no message
to the terminal or the OMC if an alarm has disappeared by itself.
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3.4.2 Status report
Two instructions enable the operator to get the information of the system status.
Typing GET commands will be responded by a listing of all settings of the repeater.
STATUS will be responded by a listing of all individual status information, which can
be monitored only but not influenced by SET commands.
The complete listing of the dialogue language with the processor of the control
module including the instructions to and the messages from the system is available
as a separate software manual.
3.4.3 Severity levels
This parameter defines five levels of severity for an alarm and can be set in the
alarm mask ( detailed description in the software manual ). The severity levels
indicate how the capability of the managed object has been affected.
The levels are described below and are ordered from most severe to least severe:
- Critical: The critical severity level indicates that a service affecting condition has
occurred and an immediate corrective action is required to restore the
capability of the managed object.
- Major:
The major severity level indicates that a service affecting condition has
developed and an urgent corrective action is required. Such a severity
can be reported, for example, when there is a severe degradation in the
capability of the managed object and its full capability must be restored.
- Minor:
The minor severity level indicates the existence of a non-service affecting
fault condition and that corrective actions should be taken in order to
prevent a more serious failure. Such a severity can be reported, for
example, when the detected alarm condition is not currently degrading
the capability of the managed object.
- Warning: The warning severity level indicates the detection of a potential or
impending service affecting failure before any significant effect has been
caused. Action should be taken to further diagnose and correction of the
problem shall prevent a more serious service affecting failure.
- Disable: The disable severity level indicates that the detected failure has no
influence on the system and shall not be sent to the terminal or the OMC.
F Note:
No entry in the alarm history.
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4 Optional equipment
Following options are available for the MRx41.
4.1 Remote control via line modem or wireless modem
Three different modem types are available.
•
•
•
•
PSTN modem ( DigiTel 34P ), line modem
Siemens M1 modem; GSM900 mobile kit, wireless modem
GSM1800 mobile kit, wireless modem
Mobile kit PCS1900
The repeater will be delivered with a preset init string. This init string was used for
internal tests. In case no connection can be established check the local conditions
and change the init string if necessary.
The following list contains the description of the AT commands:
&F
Sets modem to factory configuration
E0
Echo OFF
S0=1
Auto answer ON; the GSM module / M1 modem goes off-hook
after the first ringing signal.
S7=60
Waiting time for connection after dialing; permissible values
are from 0 ... 60.
B13
Setting to 9600 bps asynchronous mode ( M1 specific )
\ N6
Auto reliable operation ( uses RLP ), non transparent ( M1
specific )
\ N0
Standard operation, no error correction, transparent ( M1
specific )
+CBST=7,0,1
Set bearer service type to 9600 bps. Non-transparent
connection ( uses RLP )
X3
Not waiting for dial tone; usually used at PABX.
&K4
Enables XON / XOFF flow control
*P1
To switch on the mobile, used for wireless modems in
combination with PCMCIA card
table 4-1 List of AT commands
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4.1.1 PSTN modem
A Hayes compatible PSTN modem can be connected to the control module SM
2009 by the control cable, which is subject of the delivery schedule.
figure 4-1 Mounting position of PSTN modem kit
A possible initialisation string for the PSTN modem is:
AT&F X3 E0 S0=2
The telephone cable of a line modem has to be fed through a labelled grommet of
the connector panel and has to be connected to the clamps, mounted on the
connecting board ( see figure 4-4 ).
For the standard modem type DigiTel 34P use clamps 2 and 3 to connect a and b
telephone line.
Control module SM2009
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figure 4-2 Connection of control module and PSTN modem
F Note:
External alarms are not available, if a PSTN modem is used and vice
versa.
The following communication mode between control module and VT100 is initially
set for the use of a Hayes-compatible modem.
9600 baud - 8 bit - no parity - 1 stopbit
These settings can only be changed after connection to the terminal. If a different
modem has to be used or if the quality of the line does not allow to use the set
parameters, the settings have to be changed in PC mode. This is the same for all
other parameters, which can be set previously for modem mode by software.
4.1.2 Siemens M1 for GSM900, wireless modem kit
The Siemens M1 modem can be connected to the RS232 port of the control module
SM2009 by a 9-pin ribbon cable which is subject of the delivery schedule.
4.1.3 Motorola modem for GSM1800, wireless modem kit
The wireless modem kit consists of the Motorola mobile ( Traveller ) in combination
with the PCMCIA modem card ( CELLect1 ).
4.1.4 Nokia modem for PCS1900, wireless modem kit
The wireless modem kit consists of the Nokia mobile ( Traveller ) in combination
with the PCMCIA modem card ( CELLect1 ).
All types of modems, independent of the system, will be mounted in the repeater
lid accessible from the outside of the housing. The cables will be fed into the
housing.
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Modem
Connector
panel
Cover plate with
fixed with 4 Torx
screws
figure 4-3 Mounting position of PSTN- and wireless modem
A possible init string for the Siemens M1 modem ( GSM900 ) is:
AT E0 S0=1 B13 S7=60 \N6
A possible initialisation string for the Motorola modem ( GSM1800 ) is:
AT&F &K4 E0 S0=2 *P1 \N0+CBST=7,0,1
These are the standard init strings of both systems. If no connection can be
established check the local conditions and change the init string if necessary.
The antenna connection for the wireless modem is on the duplexer ( BTS side ).
figure 4-4 Connection of the antenna cable
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If one of the modems will be used the mode switch 2 of switch on the control
module has to be set to position ON ( see figure 2-11 DIP-Switch settings). To
switch back from local mode to modem mode, disconnect the PC cable from the
control module and connect the ribbon cable of the modem to the RS232 port..
Don’t forget to switch back the DIP-Switch 2 to position ON.
There are two different possibilities to supply modem with DC power.
1. In case a battery backup module is installed, connect the DC connector to the
battery backup module ( see figure 4-5 Battery backup module ).
2. If no battery backup module is installed, connect the DC connector directly to the
control module ( see figure 2-10 Topview of control module).
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4.2 Battery backup module for modem and control module
Battery backup is provided for the control module to transmit alarm information in
case of power failure. The battery type is a NiCd 8.4V/300 mAh. The battery backup
is sufficient to support multiple dial out attempts via modem in case of ‘system
engaged’ or other communication problems for at least ten minutes under normal
environmental conditions.
The module is directly plugged into the control module. During the charging process
a green LED V7 on the module indicates, that the battery is charged at the moment.
After finishing the process the LED V7 will be switched off.
LED V7
Battery backup
module
DC connector for
M1 modem or
Motorola modem
figure 4-5 Battery backup module
To activate the battery backup module a switch has to be set which is located on the
control module ( see figure 2-10 Topview of control module).
Switch
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4.3 LED kit
To get a summary alarm indication at the outside of the repeater it is possible to
install a LED kit at the connector panel of the repeater. This LED is visible at the
outside of the repeater.
figure 4-6 LED kit
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4.4 VSWR module
The VSWR module measures the voltage standing wave ratio of the DL output
antenna port. If the VSWR falls below approximately 13 dB an alarm is released.
This enables the provider to know the status of the cable to the antenna. If a cable is
defective the VSWR will decrease and the alarm will be released. The alarm can be
forwarded to an OMC, so that faults and irregularities can be recognised and
eliminated rather quick.
Technical data:
VSWR
Measuring range
5 to 15 dB
Frequency range:
whole frequency range of the repeater
•
925 to 960 MHz in GSM900/EGSM
•
1805 to 1880 MHz in GSM1800
•
1930 to 1990 MHz in PCS1900
if VSWR < 13 dB ± 1 dB
Alarm
Requirements:
The VSWR option can be implemented in each MIKOM repeater. ( Installation of the
option on site not possible! )
4.5 Traffic statistic module
The traffic statistic module is available for MIKOM repeaters, working channel
selective in the uplink path. With this option the network operator gets statistical
information about the efficiency and traffic load of the repeater operating in the
network. The processing and evaluation of the data takes place in the control
module of the repeater together with the required software.
F Note: Traffic will be measured for each channel separately.
The software reads in defined time intervals whether there is a signal above a
specified threshold level on the respective channels or not. This data is assigned to
definite values and these values are read till the next full hour. An average value is
then created and stored in a data list. Date and time of the measurement is given
with this list as well. When executing the respective command the list shows the
traffic load in percent for each hour of the day which is also called performance
data.
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An example for the performance data from 0 o'clock to 4 o'clock is given in the
following:
Measurement-time
Performance-data
00 h
01 h
02 h
03 h
04 h
***
2%
5%
10 %
21 %
Since the snapshots are not done synchronously to the time slots, there is
statistically a certain chance to read every time slot in each RF channel several
times.
In case a conversion module is in power down mode, it will not be included in the
traffic calculation. Only enabled channels will be taken into consideration.
Technical data:
Threshold
- 95 dBm to - 75 dBm ± 3dBm
t.b.d. by the customer
in steps of 1 dB
Stepwidth of traffic load indication
1%
Time interval for values
each full hour
Requirements:
The Traffic Statistics option can be ordered with each MIKOM repeater provided
the repeater operates channel selective in the uplink. Can be installed on site and
has to be enabled by Mikom ( service ).
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4.6 ICE module
ICE has been developed to enhance the antenna isolation. This feature enables
repeaters to provide coverage in areas where they were previously not effective due
to physical site limitations, which caused insufficient antenna isolation. Antenna
isolation is the RF loss measured from the donor antenna to the coverage antenna.
The path between these two antennas is a limitation on the repeater. If the gain of
an on-frequency repeater exceeds the path loss, feedback in the form of oscillation
occurs. The isolation is usually dominated by the direct path loss from one antenna
to the other, but multipath can contribute to or even dominate antenna isolation. ICE
cancels the signal from the primary feedback path, thus allowing the gain of the
repeater to be increased.
For the installation of a repeater with the ICE module it is unnecessary to measure
the antenna isolation.
Different types of ICE modules exist depending on the installation delay option. The
following table displays the delay in dependence on the cable length and the
distance between the antennas.
1. If it is possible to calculate the total cable length, the customer can choose the
ICE module with the corresponding delay option.
2. If it is not possible to calculate the total cable length it is possible to choose the
ICE module with all possible delay options.
figure 4-7 Cable length and antenna spacing
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The following table is valid for a velocity factor of 0.88 representing standard coaxial
cable with foam dielectric ( e.g. 1/2”, 7/8” ).
AS*
[m]
CL*
[m]
10
12
14
16
18
8.0 6.2 6.0 8.0 10.0 12.0 14.0 16.0 18.0
34.4 32.6 30.9 29.1 27.4 25.6 23.8 22.1 20.3
20
22
24
26
Delay
optio
270
ns
34.4 32.6 30.9 29.1 27.4 25.6 23.8 22.1 20.3 20.0 22.0 24.0 26.0
60.8 59.0 57.3 55.5 53.8 52.0 50.2 48.5 46.7 45.0 43.2 41.4 39.7
370
ns
60.8 59.0 57.3 55.5 53.8 52.0 50.2 48.5 46.7 45.0 43.2 41.4 39.7
87.2 85.4 83.7 81.9 80.2 78.4 76.6 74.9 73.1 71.4 69.6 67.8 66.1
470
ns
87.2 85.4 83.7 81.9 80.2 78.4 76.6 74.9 73.1 71.4 69.6 67.8 66.1
570
ns
The following table is valid for a velocity factor of 0.66 representing standard coaxial
cable with PE / PU dielectric ( e.g. RG223, RG8, RG214, RG58 ).
AS*
[m]
CL*
[m]
10
12
14
16
6.0 4.7 6.0 8.0 10.0 12.0 14.0 16.0
–
–
–
–
25.8 24.5 23.2 21.8 20.5 19.2 17.9 16.6
18
20
22
24
26
Delay
optio
270
ns
25.8 24.5 23.2 21.8 20.5 19.2 17.9 16.6 18.0 20.0 22.0 24.0 26.0
–
–
–
–
–
–
–
–
–
–
–
–
–
45.6 44.3 43.0 41.6 40.3 39.0 37.7 36.4 35.0 33.7 32.4 31.1 29.8
370
ns
45.6 44.3 43.0 41.6 40.3 39.0 37.7 36.4 35.0 33.7 32.4 31.1 29.8
–
–
–
–
–
–
–
–
–
–
–
–
–
65.4 64.1 62.8 61.4 60.1 58.8 57.5 56.2 54.8 53.5 52.2 50.9 49.6
470
ns
65.4 64.1 62.8 61.4 60.1 58.8 57.5 56.2 54.8 53.5 52.2 50.9 49.6
570
ns
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*AS: Antenna spacing = the main isolation determining path
* CL: Cable length = total length of both cables ( repeater à donor antenna CL1,
repeater à coverage antenna CL2 )
If, due to the cable length, two different ICE modules are possible, the module
with the higher delay option should be used.
F Note:
F Note:
F Note:
The ICE module will be recognized automatically and must not be
activated by software.
If the software feature ‘Automatic Gain Setting’ is active, the set
attenuation has to be the same value for all channels in UL and DL.
Also channels in power down mode have to be set to the same
attenuation like the channels in operation to guarantee a proper
function.
Settings according to the software commands can be found in the software manual.
4.7 RSSI module
The RSSI module provides the monitoring of the receive level of a BTS to a repeater.
It measures the input level of the BCCH channel in the downlink which is achieved
by detecting the RF and converting the level in an ADC into a digital value. The
processing and evaluation of the data takes place in the control module of the
repeater together with the required software.
The RSSI module in combination with the software and the control module provides
the possibility to release an alarm. This alarm can be forwarded to a defined phone
number or to the OMC if the repeater is equipped with a modem or a mobile phone.
The alarm level can be set by the customer by means of the software. This enables
the provider to know the status of his network and to control it if necessary. Faults
and irregularities can thus be recognised and eliminated.
Technical data:
Level range
- 80 dBm to - 30 dBm ± 3 dBm
Stepwidth
1 dB
Threshold for alarms
t.b.d. within the level range
Requirements:
The RSSI option can be ordered with each MIKOM repeater provided the repeater
operates channel selective in the DL. Hardware can be installed on site. Software
has to be enabled by Mikom ( service ).
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4.8 External alarms ( for control module Rev. 07 and higher )
With the following option it is possible to monitor 4 external alarms via the repeater
software. Hence the status of the connected device, e.g. UPS , can be monitored.
The DIP-Switches on the control module have to be set to position ‚EXT. ALARM 1 –
4‘ ( see figure 2-11 DIP-Switch settings).
F Note:
It is not possible to use 4 external alarms and a PSTN modem at the
same time because the PSTN modem needs already two lines. If a
PSTN modem is required, two external alarms are available.
The contacts of the alarms can be accessed at clamp X2 and X1 of the connecting
board. The electrical connection has to be as follows.
X2: 1
X2: 2
X2: 3
X2: 4
X1: 7
External alarm 1 ( low active )
External alarm 2 ( low acitve )
External alarm 3 ( high active )
External alarm 4 ( high active )
Ground
Ground
External alarms 1 ... 4
figure 4-8 Configuration of the clamps
Configuration: 5 V / 0.5 mA max. for open collector applications.
All external alarms are normally high without connection. Due to the fact that the
external alarms 3 and 4 are high active, they have to be connected to ground to
prevent an alarm message.
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F Note: The name for each external alarm and the name for the alarm
message can be defined by the customer with the corresponding
software command ( see software manual ).
The following example describes the response for the external alarms to control a
UPS.
Example: External alarms if the UPS is active
EXTERNAL ALARM STATUS
UPS alarm active
Battery low !
UPS door open
Battery door open
or
External alarms if the UPS is not active
EXTERNAL ALARM STATUS
UPS not active
Battery OK
UPS door closed
Battery door closed
F Note:
A special software blocking must be removed in order to use this
option.This can be carried out only by authorised persons from
MIKOM.
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5 Installation
5.1 Mechanical specification
TX Downlink
RX Uplink
TX Uplink
RX Downlink
to/from
Mobile Stations
to/from
BTS
Repeater System
TX Uplink
RX Downlink
TX Downlink
RX Uplink
TX Uplink
RX Downlink
TX Uplink
RX Downlink
Mobile
BTS
Mobile
Mobile
figure 5-1 System description
RF connectors:
2 connectors 7/16 female
Power supply connection:
3 m power cable
Mechanical dimensions of the F - cabinet:
( height x width x depth )
445 × 255 × 167*/185 mm
*without mounting brackets
Weight:
approximately 14 kg ( 15.2 kg with 2
ICE modules ) per unit in standard
configuration
The illustration of chapter 12 provides the dimensions and the view of the layout.
5.2 Environment and safety
For detailed information refer to the environment and safety specification leaflet for
MIKOM indoor / outdoor cell enhancers, related to ETS 300019 (European
Telecommunication Standard).
Operating temperature
( normal temperature range ):
( extreme temperature range ):
+ 5° C ... + 40° C
- 33° C ... + 50° C
Humidity:
+ 30° C/ 93 %
Protection class:
IP 65
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5.3 Mechanical installation
The repeater is typically mounted to either a pole or a wall. The mounting hardware
used is specific to the type of installation. The unit should be positioned so that it is
in a secure location, yet easily accessible for maintenance. There should be enough
clearance ( 1 m radius ) for the door to swing completely open and electrical and
other connections should be easily accessible. Also note that the bend radius of the
cables should not be exceeded when positioning the unit. The repeater shall be
mounted in the vertical plane to a wall or a mast, which means the connectors have
to show down to the bottom.
figure 5-2 Clearance distance
Use the mounting brackets, which are part of the delivery. This will guarantee a
minimum distance between the wall and the repeater housing. The mounting
brackets must be fixed with 4 screws to the wall ( brackets ) and the cabinet must
be fixed with 4 hex socket screws and 2 tyre screws to the mounting brackets.
Check the correspondence of the wall mounting kit and the wall.
F 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 necessary 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
in order to provide air circulation.
F Note:
The weight of the MRx41 is approx. 14 kg in standard configuration.
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5.3.1 Wall mounting procedure
1. Dismount first the mounting brackets, which are already mounted to the repeater.
Remove the lower screws and the tyre screw completely and loose the upper
screws as far as necessary to remove the brackets.
2. Use the wall mounting template to mark the 4 drilling holes on the surface of the
wall.
3. Mount the bracket to the wall.
4. Now it is possible to align the housing properly.
5. Screw the housing firmly to the wall by using the tire bolts , washers and the hexhead bolts M8.
Furthermore the repeater should be mounted in a way that there is free access to
the individual units when the door of the repeater is open. Therefore keep a
clearance distance of 1m radius.
figure 5-3 Wall mount procedure
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For the installation of the extension units keep the required distances between the
units ( see the following figure ).
figure 5-4 Distances between main unit and extension units
5.3.2 Pole mounting procedure
Standard mounting hardware can not be used to mount the MRx41 unit to a pole or
a mast or other similar structure. Additional hardware must be used for this type of
installation. Such pole mounting kit includes:
n 2 threaded rods M8
n 2 U-beam
n mounting material like bolts and nuts
F Note:
Two pole mounting kits are required to mount this unit to a pole or a
mast.
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figure 5-5 Pole mounting kit
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5.4 Electrical installation
F Note:
ESD precautions have to be observed! Before working inside the
cabinet use the available grounding system to connect ESD
protection measures.
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. 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.
5.4.1 Grounding
Grounding has to be performed by all means. An earth bonding cable has to be
connected to the grounding bolt provided at the outside of the cabinet on the left
side. Don’t use the grounding screw for connecting external devices.
The complete grounding bolt is part of the delivery schedule, see the following
figure.
Grounding bolt
figure 5-6 Grounding bolt
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5.4.2 Connection of the antenna cables
The repeater has two female antenna connectors 7/16. For mounting the
corresponding cable connectors we recommend to refer to the applicable
documentation of the respective connector manufacturer. The bending radius of the
antenna cables must remain within its specification. This will warrant proper
operation of the system; otherwise changes in the electrical behaviour of the cable
might occur which could cause malfunction of the repeater system.
F Note:
Do not use a tool to tight the antenna connectors. This might
damage the antenna cable or the antenna connector.
5.4.3 Power connection
Before connecting electrical power to the repeater grounding has to be performed.
The repeater is equipped with a firmly connected power cord H07RN-F 3 x 1.5 mm².
Due to safety reasons the power supply lead of the repeater has to be provided with
a 16 A fuse. In case the length of the power cord should not be sufficient it can be
replaced by a longer cable ( see 8.3 Replacement of the mains cable ).
F Note:
The diameter of the power supply lead has to be in the range of
9.5 mm max. and 6.5 mm min.
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6 Setting to work
6.1 Preparation
F Note:
It is not allowed to operate the repeater without termination of the
antenna connections! The termination can be performed by the
antenna connection as well as a dummy load or the 50-Ohmterminated connection of ameasuring instrument.
The repeater system has its maximum available gain when the attenuation is set to
zero. In order to check the function of the repeater system on site it is advisable to
operate the repeater system with 50 Ohm termination. This makes it possible to set
the necessary gain and to test the set value without the necessity of transmitting on
air.
F Note:
This measurement is not necessary if an ICE module is used.
In order to perform settings the repeater has to be opened. Ensure not to damage
the seals on the modules, which are attached to the conversion modules. Please
note, there is no warranty if seals are broken.
After taking the repeater into service following signals occur during the boot process.
Internal
LED L1
red
Flashes
red short
time
Internal
LED L2
Internal
LED L3
green
red
green
green
Flashes red
short time
Cause
Power on
state,
Software boot
process
starts
Software boot
finished
Program is
running
table 6-1 LED indication
F Note:
The boot process takes about 3 minutes.
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6.2 Setting of operational parameters
There are three different possibilities to set the operational parameters:
- direct manual control by means of rotary switches
- local control via RS232 interface and PC as terminal
- remote control via line modem or wireless modem and PC or OMC as
terminal
6.2.1 Manual settings by means of rotary switches
The manual mode allows the operator to set the required channels and the
attenuation by means of rotary switches. With a small screwdriver, which fits
through the long holes of the conversion modules, the values can be adjusted by
turning the switch carefully to the desired position.
F Note:
To enable manual settings of parameters the mode switch DIP-Switch
1 of the mode switch has to be changed from OFF to ON (see figure
2-11 DIP-Switch settings).
F Note:
Gain can be set independently for the uplink and downlink path for
both channels commonly in 2 dB steps. It is not possible to set the
gain for each channel separately.
A label on the conversion module, located next to the rotary switch (this label might
be fixed to the inner side of the cabinet as well), illustrates the usage of the rotary
switch (see figure 6-1 Channel rotary switches and gain setting).
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6.2.1.1 Channel setting
The channel for every conversion module can be set easily by means of a rotary
switch mounted on the mother board. Using a small screwdriver, which fits through
the long hole in the centre of the conversion modules, the channels can be changed
by adjusting the rotary switch to the desired number.
The corresponding frequency follows from chapter 12.4 Frequency / ARFCN table.
figure 6-1 Channel rotary switches and gain setting
Example:
Presumed the desired ARFCN is 120.
1)
The first rotary switch has to be set to 1 (1 x 10²), the second to 2 (2 x 10 and the
third remains at 0 (0 x 10°).
F Note:
If a non-existing ARFCN is adjusted, the value will not be accepted.
The previous valid ARFCN will be kept.
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6.2.2 Local settings via personal computer as terminal
Instead of setting operational parameters manually via rotary switches it is also
possible to use the functions of the control module. The PC mode will be
automatically recognized by the software. The DIP-Switch 2 must be at position
OFF.
A VT100 terminal or a PC with VT100 emulation can be connected to the control
module SM2009 by a standard RS232 cable, if necessary in connection with an
adapter 9 to 25.
Cable connections PC
SUB-D9-connector ( male )
control module SM2009 ( RS232 )
SUB-D)-connector ( male )
The following communication mode between control module and VT100 is set
initially.
9600 baud - 8 bit - no parity -1 stopbit
These settings can only be changed after connection of the terminal. If all wanted
settings have been initialized and a modem has to be used it is recommended to
check, whether the settings comply with the capabilities of the modem and the line.
Modifications are possible by software commands
F Note:
Settings on the repeater can be performed after the following
procedure only.
After connecting the PC to the repeater, following procedure is necessary to get
access to the program.
MIKOM REPEATER MRx41 - SM2009 - SW: REP1012V1.xx
ENTER <.>  TO LOGIN
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1. Step:
Type the two keys ( . ) FULLSTOP and (↵) ENTER
You have to type the keys:
2. Step:
↵
ENTER USER ID
You have to enter:UserID1 ↵
F Note:
The input is case sensitive, no blanks. After three mistrial follow
disconnection. After 5 wrong login attempts the password alarm will
be released.
3. Step:
ENTER PASSWORD
You have to enter:P-word1 ↵
F Note:
The input is case sensitive, no blanks. After three mistrial follows
disconnection. After 5 wrong login attempts the password alarm will
be released.
6.2.3 Remote control via modem
For a detailed description of remote feature of the MRx41 refer to chapter 4.1.
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7 Trouble shooting
7.1 Error indication
• = LED on
- = LED off
1. With implemented battery backup module
Internal
LED L1
green
red
Internal
LED L2
green
red
Internal
LED L3
green
•
•
•
•
•
•
Cause
No power.
Check presence of
power at the input;
replace fuse according
to chapter, check
battery backup module
Indicates a
summary failure
Mains failure, control
module is supplied
from battery backup
module
2. Without battery backup module
Internal
LED L1
green
red
•
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Internal
LED L2
green
red
Internal
LED L3
green
•
•
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Cause
No power.
Check presence of
power at the input;
replace fuse according
to chapter 8.2
Indicates a
summary failure
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7.2 Boot process
Following signals occur during boot process (see table 6-1 LED indication ).The boot
process takes about 3 minutes
7.3 Alarm monitoring with the alarm history
Check the alarm history ( see table 3-1 List of all available alarms ).
1. If a hardware module is damaged, replace corresponding hardware module.
2. Minor alarms with no influence on the system can be cancelled by confirming the
alarm with the software command ‘alarmackn’, e.g., DOOR OPEN.
3. If all alarms have been acknowledged the summary error LEDs will be set back to
green indication.
4. In case of mains power failure the contents of the actual alarm history list will be
lost.
7.4 Power supply
Factory set output voltages ( with load )
• 7.8 V ± 0.1 V
• 12.4 V ± 0.1 V
In case of an I²C-Bus error, also check the power supplies. They must be switched
ON.
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7.5 General remarks
• After a software download previous user settings ( data default values ) might be
overwritten. Before you start a software download save all user settings:
- ARFCN numbers
- attenuation
- ALC threshold
- temperature compensation offset ( gain )
- phone numbers etc.
• If an ALC alarm occurs during installation or commissioning an user error might
be the cause, due to wrong measurements, e.g.
ALC:
Input level too high à reduce gain
•
RSSI:
Input level too low à check antenna and cables and
attenuators
•
Traffic statistic: Measurement is never zero, it is displaying continuously
values even
in periods of low traffic loads, e.g. during night.
Cause:
Traffic threshold ( factory setting -95 dBm ) is too low. The
traffic module is then measuring only noise.
Solution:
Threshold has to be increased ( contact factory ).
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8 Maintenance
8.1 General
F Note:
The repeater does not require preventative maintenance measures.
It is only recommended to replace the RAM/RTC battery after three years usage as a
prophylactic measure. The nominal lifetime of this battery is five years under normal
environmental conditions.
F Note:
The RAM/RTC battery has to be removed for long term storage.
In the event of a malfunction it is advantageous to check the status of the antenna
systems as well as the continuity of the entire cabling including connectors, before
replacing the modules.
Maintenance on the repeater shall be performed only by replacing modules.
Soldering on printed circuit boards shall be avoided. In order to sustain warranty
take care not to damage unintentionally the seals on the modules.
Danger ! Before replacing a module disconnect the repeater from mains and
switch off the battery backup module.
The spare parts list, consequently, contains only units, which can be replaced
without tuning or complex soldering work. Those units are all MIKOM modules,
internal and external cables.
F Note:
Defect parts should only be replaced by original parts from MIKOM.
All interventions inside the housing, are at one’s own risk. During
maintenance ensure that the repeater has been disconnected from
mains.
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8.2 Replacement of the power supply and mains fuses
F Note:
Ensure that mains are disconnected and the battery backup module
is switched off.
The power supply is mounted in the lid of the housing. Open the repeater to get
access to the device.
Remove all connected cables from the clamps of the power supply.
The power supply is fastened to the lid of the housing by means of two nuts M4 on
the right-hand side. After loosen the screws the power supply can be removed. To
open these screws use a key with a mobile element ( part of the spare parts kit ).
F Note:
Don’t forget to put heat conducting paste on the mounting side for
installation of a new power supply. Use the heat conducting paste,
which is included in the spare parts kit.
The power supply is protected with a secondary 10 A fuse, depending on the power
supply type. In case of a power supply failure exchange these fuses. The power
supply can be equipped with a power socket, which is protected with two mains
fuses, type 2AT/250.
Nuts
Mains fuses
Power supply
figure 8-1 Mounting position of the power supply and mains fuses
F Note:
Use only fuses of the same type and the same rating when replacing!
8.3 Replacement of the mains cable
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The repeater will be delivered with a firmly connected mains cable 3 x 1.5 mm² with
the length of 3 m.
Remove the cover plate with the lock. To open the housing, the upper screws have
to be removed first and than the lower screws. To close the housing proceed in
reverse order. Open the housing by lifting the fixing clamp.
The mains cable is now accessible from the bottom of the heat sink. Open the PG9
threaded joint with a spanner size 17. Inside the housing remove the plastic lid of
the connecting board. Unscrew 3 wires L1, N and PE from the clamps on the
connecting board.
Strip the isolation of the cable to the length of 180 mm and pull it through the cable
gland like depicted in figure 8-2. Inside the housing use the insulated tube.
figure 8-2 Cable gland
For the mounting of a new power supply lead proceed in reverse order.
F Note:
The diameter of the power supply lead has to be in the range of
9.5 mm max. and 6.5 mm minimum.
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8.4 Replacement of the RAM / RTC battery
This battery is responsible for buffering the real time clock circuit. The RAM/RTC
battery of the control module has to be replaced in case of date / time loss or as a
preventive measure after approximately three years usage. In case a battery backup
module is implemented it has to be removed because the RAM/RTC battery is
mounted underneath the module. It is accessible after opening the housing on the
left-hand side in the lid. A software alarm is raised when the battery voltage is low.
F Note:
Before replacing the battery, disconnect the repeater from mains and
remove the battery backup module ( if available ). Don’t try to charge
this battery. Observe the rules for changing Lithium batteries. Wrong
connection or treatment may result in bursting of the battery and
dissemination of hazardous substances.
Take off the Lithium battery by means of a small screwdriver, placed between the
battery and the battery socket.
Place the
screwdriver
between the socket
and the battery
figure 8-3 Position of RAM/RTC battery
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8.5 Replacement of the battery backup module ( option )
The battery backup module consists of a printed circuit which is plugged into the
control module and the accumulator ( NiCd 8.4 V, 270 mAh ). The accumulator is
fixed to the repeater lid on the left-hand side. The accumulators have to be replaced
in case of a software alarm or as a preventive measure after approximately one
years usage to guarantee full capacity in case of a mains failure. The nominal
lifetime of the accumulators is three years.
F Note:
Before replacing the battery backup module, disconnect the repeater
from mains first and switch off the battery backup module.
The battery backup module is accessible after opening the housing on the left-hand
side in the lid.
Before dismounting the module from the socket, release the three snap-in lockings.
Remove the DC cable ( from the wireless modem kit ), which is plugged into the
battery backup module. Now it is possible to remove the battery backup module by
pulling carefully the module. The accumulator can now be removed by placing a
small screwdriver between the accumulator and the holding clamp. Insert a new
accumulator by pressing the device into the holding clamp. Insert the battery backup
module. Finally connect the DC cable of the wireless modem.
Snap-in
lockings
Battery backup
module
Accumulator
DC cable from
modem
figure 8-4 Battery backup module
*Option
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8.6 Duplexer
• Duplexer UL out:
Remove the combiner ( if installed ).
If the duplexer has to be replaced dismount the connecting board first ( see chapter
8.10 ).
The duplexer and the basic module are mounted close together. It is easier to
remove the duplexer by dismounting the basic module first.
Remove the ribbon cable connected to the mother board.
Remove the RF cables on the side of the UL output, by loosing the SMA connector
by means of a torque wrench.
Unscrew the four counter sunk screws M3 at the connector panel.
• Duplexer DL out
Remove the RF cables on the DL out, by loosing the SMA connector by means of a
torque wrench.
Unscrew the four counter sunk screws M3 at the connector panel.
The duplexer and the extension module are mounted close together. It is easier to
remove the duplexer by dismounting the extension module first.
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8.7 PSTN modem kit ( option )
The modem is situated in the lid of the housing. Push the button on the control
module to release the modem and pull the card out of the PCMCIA card holder.
Disconnect the PSTN cable which is plugged into the control module. Now it is
possible to take out the modem card.
Release
button
figure 8-5 PSTN modem kit
* Option
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8.8 Channel modules
To remove the basic module, disconnect the SMA connectors by means of a torque
wrench.
Unscrew six hex socket screws by means of a hex socket key. Pull carefully by
means of the mounting strap, fixed on the channel module and take off the module.
To remove the extension module, proceed in the same way.
F Note:
The basic and the extension modules are not interchangeable
For the exchange of a channel module or the installation of a new channel module,
the slave address of the synthesizer has to be set. This can be done by means of
hex-coded rotary switches mounted on the bottom side of the modules ( see
following figure ).
Bottom view
Hex-coded rotary
switch for UL
Hex-coded rotary
switch for DL
figure 8-6 Position of hex coded rotary switches
The configuration of the slave address for each channel group is as follows:
Basic Module
UL DL
Channel 1
Channel 3
Channel 5
Channel 7
Extension
Module
UL
DL
Channel 2
Channel 4
Channel 6
Channel 8
table 8-1 Configuration of hex-coded rotary switches
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8.9 ICE module
Each module requires an own ICE-module. Both have to be adjusted together
because they are not compatible with other modules. The ICE module will be
mounted on top of the channel module. It is screwed tight by use of 3 hex socket
screws. Unscrew these screws and pull at the mounting strap and take off the
module.
If an ICE module will be implemented for the first time remove the small lid on top of
the basic or extension module. Now it is possible to connect the ICE module to the
basic or extension module. Screw it tight by means of 3 hex socket screws.
8.10 Connecting board
The connecting board is mounted on top of the UL duplexer on the right-hand side in
the heat sink. Remove the plastic lid which is fixed to the connecting board. The
connecting board is screwed to the duplexer by means of three tallow-drop screws
M3.
F Note:
Disconnect repeater from mains first!
Disconnect the ribbon cable, mains cable, the cable to the power supply and
grounding cable.
figure 8-7 Connecting board
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9 Spare parts list
The following list contains all parts available for the MRx41. The configuration of the
delivered unit meets the requirements of the customer and can differ depending on
the state of delivery.
9.1 Spare parts for MR341
Designation
MR341
150025
Assembly drawing main unit
Assembly drawing lid
Assembly drawing RF-cable plan
Assembly material
Cable set
Duplexer UL INPUT
Duplexer DL INPUT
Basic Module for ICE
Extension Module for ICE
Termination Module 3dB
3dB Option kit
ICE Module for 120MHz all delay times
ICE Module for 120MHz
570 ns
ICE Module for 120MHz
470 ns
ICE Module for 120MHz
370 ns
ICE Module for 120MHz
270 ns
Power Supply, 80-130Vac, no plug
Power Supply, 80-130Vac
Power Supply, 85-140Vac
Power Supply, 230Vac ±15%, no plug
Power Supply, 160-320Vac
Power Supply, 185-320Vac, no plug
Power Supply, 24Vdc
M1 Kit 900 MHz
Mobile Kit GSM/DCS
Modem Kit PSTN
Power Out SW-Option
RSSI SW-Option
Traffic SW-Option
Noise Red. SW-option
Accu SW-option
VSWR Kit GSM + EGSM
Ext. Alarms SW-Option
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Id.-No.
MR341EGSM
150031
150302
150303
150120
150121
147583
Page 70
147612
147614
147619
149334
147572
150310
150311
150120
150121
146521
147584
150656
150655
150654
145061
150653
152551
149222
151831
144306
149221
148812
151965
150699
150698
143112
145478
148970
148971
149233
149235
143437
145067
MR341GSMR
150037
150312
150313
150122
150123
147584
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Battery Backup Module
LED-Kit
Adapter
SW MOB100 V1.10
SW REP1012 V1.10
Mother Board
Connecting Board
Control Unit SM2009
Pole mounting kit
Wall mounting kit
Spare parts kit
Front panel small compl.
Retainer Reed Magnet
DC-cable ready made
AC-cable ready made
Manual REP1012V1.xx
Manual MRx41 (F-cabinet)
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143052
145106
112425
143055
147926
148968
142362
143051
145687
150519
143480
152574
144309
147970
143032
148972
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9.2 Spare parts for MR441
Designation
MR441
150000
Assembly drawing main unit
Assembly drawing lid
Assembly drawing RF-cable plan
Assembly material
Cable set
Duplexer UL INPUT
Duplexer DL INPUT
Basic Module for ICE
Extension Module for ICE
Termination Module 3dB
3dB Option kit
ICE Module for 120MHz all delay times
ICE Module for 120MHz
570 ns
ICE Module for 120MHz
470 ns
ICE Module for 120MHz
370 ns
ICE Module for 120MHz
270 ns
Power Supply, 80-130Vac, no plug
Power Supply, 80-130Vac
Power Supply, 85-140Vac
Power Supply, 230Vac ±15%, no plug
Power Supply, 160-320Vac
Power Supply, 185-320Vac, no plug
Power Supply, 24Vdc
Mobile Kit GSM/DCS
Modem Kit PSTN
Power Out SW-Option
RSSI SW-Option
Traffic SW-Option
Noise Red. SW-option
Accu SW-option
VSWR Kit DCS
Ext. Alarms SW-Option
Battery Backup Module
LED-Kit
Adapter
SW MOB100 V1.10
SW REP1012 V1.10
Mother Board
Connecting Board
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150300
150301
150102
150103
Id.-No.
MR441
MR441
150006
150012
147612
147614
147619
147619
149334
147573
150304
150306
150305
150307
150608
150608
150611
150611
146521
147584
150656
150655
150654
145061
150653
152551
149222
151831
144306
149221
148812
151965
150698
143112
145478
148970
148971
149233
149235
143436
145067
143052
145106
112425
143055
147926
148968
142362
Page 72
MR441
150018
147619
150308
150309
150102
150103
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User’s manual for channel selective repeater MRx41
Control Unit SM2009
Pole mounting kit
Wall mounting kit
Spare parts kit
Front panel small compl.
Retainer Reed Magnet
DC-cable conf.
AC-cable conf.
Manual REP1012V1.xx
Manual MRx41 (F-cabinet)
M0090a0a.doc
Id.-No. 148092
143051
145687
150519
143480
152574
144310
147970
143032
148972
148092
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User’s manual for channel selective repeater MRx41
9.3 Spare parts for MR741
Designation
MR741
150595
Assembly drawing main unit
Assembly drawing lid
Assembly material
Cable set
Duplexer UL INPUT
Duplexer DL INPUT
Basic Module for ICE
Extension Module for ICE
Termination Module 3dB
3dB Option kit
ICE Module for 120MHz all delay times
ICE Module for 120MHz
570 ns
ICE Module for 120MHz
470 ns
ICE Module for 120MHz
370 ns
ICE Module for 120MHz
270 ns
Power Supply, 80-130Vac, no plug
Power Supply, 80-130Vac
Power Supply, 85-140Vac
Power Supply, 230Vac ±15%, no plug
Power Supply, 160-320Vac
Power Supply, 185-320Vac, no plug
Power Supply, 24Vdc
Mobile Kit PCS
Modem Kit PSTN
Power Out SW-Option
RSSI SW-Option
Traffic SW-Option
Noise Red. SW-option
Accu SW-option
Ext. Alarms SW-Option
Battery Backup Module
LED-Kit
Adapter
SW MOB100 V1.10
SW REP1012 V1.10
Mother Board
Connecting Board
Control Unit SM2009
Pole mounting kit
M0090a0a.doc
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144382
144381
150591
150592
Page 74
Id.-No.
MR741
150596
147612
147614
149334
147573
144384
144383
150593
150594
146521
147584
150656
150655
150654
145061
150653
152551
149222
151831
144306
149221
148812
151965
150405
143112
145478
148970
148971
149233
149235
145067
143052
145106
112425
143055
147926
148968
142362
143051
145687
MR741
151782
151072
151073
150593
150594
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User’s manual for channel selective repeater MRx41
Wall mounting kit
Spare parts kit
Front panel small compl.
Retainer Reed Magnet
DC-cable conf.
AC-cable conf.
Manual REP1012V1.xx
Manual MRx41 (F-cabinet)
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150519
143480
152574
144310
147970
152024
148972
148092
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User’s manual for channel selective repeater MRx41
10 Configuration list
The actual configuration of the repeater system has been entered on a separate list
at delivery. This configuration list is subject of the delivery schedule providing actual
information of Mikom part number, serial number and revision status of the repeater.
Whenever parts should be replaced the user is kindly asked to update the list.
F Note:
M0090a0a.doc
Whenever parts should be replaced the user is kindly asked to
update the list.
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User’s manual for channel selective repeater MRx41
11 Appendix
11.1 Electrical specifications MR341
Bandwidth in UL and DL
Up to 25 MHz in the GSM900 band
Number of channels
2 max. (in one F-cabinet)
Bandwidth of a channel
200 kHz min.
Selectivity of a channel
35 dB @ ± 400 kHz; 60 dB @ ± 600 kHz
Channel selection
Manually or controlled remotely
Output power (@ 25° C
amb.temp.)
Spurious due to intermodulation
32.5 dBm min. per channel at 2 channels
NOTE: The output power per channel will be
reduced if the system is upgraded:
3.5 dB power reduction @ 4 channels
5.5 dB power reduction @ 6 channels
7.0 dB power reduction @ 8 channels
- 36 dBm
ALC reaction time
3 msec. (others available on request)
Gain at max. gain setting
85.0 dB @ 2 channels
81.5 dB @ 4 channels
79.5 dB @ 6 channels
78.0 dB @ 8 channels
Tolerance of the gain over full
bandwidth and temperature
± 2.0 dB over normal temperature range*
± 3.0 dB over extreme temperature range**
Set range of the gain
30 dB typ. in steps of 2 dB locally or remotely
Tolerance per gain step
± 0.5 dB from 0 to 6 dB attenuation
± 2.0 dB from 8 to 30 dB attenuation
Delay
< 7 µs (Variation ± 200 ns)
Noise figure
5 dB @ max. gain; 8 dB @ min. gain
Return loss
15 dB (@ 25° C amb. temp.)
220...250 Vac / 40...60 Hz;
Option: +15...+24 Vdc or ± 48Vdc or 115 Vac
/ 40...60 Hz
Power supply
Power consumption
20 W + 45 W/channel + 8 W / ICE module
(efficiency of power supply excluded; 75 % 90 %)
Connectors
7/16 female; N as an option
Remote control interface
SM 2009
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User’s manual for channel selective repeater MRx41
Built in test equipment
Current monitor • synthesizer lock monitor •
temperature • ALC active • output power
Alarm forwarding
Potential free relay contact and automatic
alarm call via RS232 or PCMCIA interface (via
PSTN modem or mobile)
Control functions
Gain • Channel • ALC threshold
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User’s manual for channel selective repeater MRx41
11.2 Electrical specifications MR441
Bandwidth in UL and DL
Up to 35 MHz in the GSM1800 band
Number of channels
2 max. (in one F-cabinet)
Bandwidth of a channel
200 kHz min.
Selectivity of a channel
35 dB @ ± 400 kHz; 60 dB @ ± 600 kHz
Channel selection
Manually or controlled remotely
Output power (@ 25° C
amb.temp.)
Spurious due to intermodulation
32.5 dBm min. per channel at 2 channels
NOTE: The output power per channel will be
reduced if the system is upgraded:
3.5 dB power reduction @ 4 channels
5.5 dB power reduction @ 6 channels
7.0 dB power reduction @ 8 channels
- 30 dBm
ALC reaction time
3 msec. (others available on request)
Gain at max. gain setting
85.0 dB @ 2 channels
81.5 dB @ 4 channels
79.5 dB @ 6 channels
78.0 dB @ 8 channels
Tolerance of the gain over full
bandwidth and temperature
± 2.5 dB over normal temperature range*
± 3.5 dB over extreme temperature range**
Set range of the gain
30 dB typ. in steps of 2 dB locally or remotely
Tolerance per gain step
± 0.5 dB from 0 to 6 dB attenuation
± 2.0 dB from 8 to 30 dB attenuation
Delay
< 7 µs (Variation ± 200 ns)
Noise figure
5 dB @ max. gain; 8 dB @ min. gain
Return loss
15 dB (@ 25° C amb. temp.)
220...250 Vac / 40...60 Hz;
Option: +15...+24 Vdc or ± 48Vdc or 115 Vac
/ 40...60 Hz
Power supply
Power consumption
20 W + 25 W/channel + 8 W / ICE module
(efficiency of power supply excluded; 75 % 90 %)
Connectors
7/16 female; N as an option
Remote control interface
SM 2009
Built in test equipment
Current monitor • synthesizer lock monitor •
temperature • ALC active • output power
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User’s manual for channel selective repeater MRx41
Alarm forwarding
Potential free relay contact and automatic
alarm call via RS232 or PCMCIA interface (via
PSTN modem or mobile)
Control functions
Gain • Channel • ALC threshold
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User’s manual for channel selective repeater MRx41
11.3 Electrical specifications MR741
Bandwidth in UL and DL
Up to 35 MHz in the PCS1900 band
Number of channels
2 max. (in one F-cabinet)
Bandwidth of a channel
200 kHz min.
Selectivity of a channel
35 dB @ ± 400 kHz; 60 dB @ ± 600 kHz
Channel selection
Manually or controlled remotely
Output power (@ 25° C
amb.temp.)
Spurious due to intermodulation
32.5 dBm min. per channel at 2 channels
NOTE: The output power per channel will be
reduced if the system is upgraded:
3.5 dB power reduction @ 4 channels
5.5 dB power reduction @ 6 channels
7.0 dB power reduction @ 8 channels
- 13 dBm
ALC reaction time
3 msec. (others available on request)
Gain at max. gain setting
85.0 dB @ 2 channels
81.5 dB @ 4 channels
79.5 dB @ 6 channels
78.0 dB @ 8 channels
Tolerance of the gain over full
bandwidth and temperature
± 2.5 dB over normal temperature range*
± 3.5 dB over extreme temperature range**
Set range of the gain
30 dB typ. in steps of 2 dB locally or remotely
Tolerance per gain step
± 0.5 dB from 0 to 6 dB attenuation
± 2.0 dB from 8 to 30 dB attenuation
Delay
< 7 µs (Variation ± 200 ns)
Noise figure
5 dB @ max. gain; 8 dB @ min. gain
Return loss
15 dB (@ 25° C amb. temp.)
220...250 Vac / 40...60 Hz;
Option: +15...+24 Vdc or ± 48Vdc or 115 Vac
/ 40...60 Hz
Power supply
Power consumption
20 W + 25 W/channel + 8 W / ICE module
(efficiency of power supply excluded; 75 % 90 %)
Connectors
7/16 female; N as an option
Remote control interface
SM 2009
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User’s manual for channel selective repeater MRx41
Built in test equipment
Current monitor • synthesizer lock monitor •
temperature • ALC active • output power
Alarm forwarding
Potential free relay contact and automatic
alarm call via RS232 or PCMCIA interface (via
PSTN modem or mobile)
Control functions
Gain • Channel • ALC threshold
* normal temperature range: + 5° C to + 40° C;
** extreme temperature range: - 33° C to + 50° C.
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User’s manual for channel selective repeater MRx41
11.4 Options for MRx41
OPTIONS
MRx41
Downlink options
VSWR (Voltage standing
wave ratio)
Remote control
Battery backup
RSSI
I.C.E.
VSWR can be measured. The threshold for the VSWR alarm
is 13 dB ± 1 dB.
To remotely control RF and optical Repeaters different
interfaces are available: RS232 wire connection, PSTN and
wireless modems.
MIKOM offers a unique Repeater OMC software package
based on a windows platform; it can also support an Unix
interface to forward alarms. This OMC software provides
network, configuration and fault management.
Repeater battery backup is available for 20 minutes and 2
hours. Further backup times are available as well.
If backup is only required for the control interface and the
modem, low capacity batteries are available to operate
controller and modem for at least 10 minutes.
Input level of the BCCH channel is measured and displayed
through a terminal software or the MIKOM Repeater OMC.
Level range is - 80 to - 30 dBm.
Interference
Cancellation
Equipment
for
electronic
improvement of antenna isolation and stability control by
software. I.C.E. electronically improves antenna isolation
more than 20 dB.
Uplink options
Traffic statistics module
Noise management
I.C.E.
Traffic load for each uplink channel is indicated in time
intervals of 60 minutes. It is monitored in steps from
1...100 %, through terminal software or MIKOM Repeater
OMC software package.
Reduces the gain of the Repeater for time slots not in use.
This reduces the noise power injection into the BTS.
Interference
Cancellation
Equipment
for
electronic
improvement of antenna isolation and stability control by
software. I.C.E. electronically improves antenna isolation
more than 20 dB.
All data is subject to change without notice!
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User’s manual for channel selective repeater MRx41
12 Installation
12.1 Drawing of the repeater
figure 12-1 Installation drawing
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User’s manual for channel selective repeater MRx41
12.2 Layout of the repeater ( heat sink )
Heat sink
ICE module
ICE module
Extension module
Basic module
Connecting
board
Duplexer
RF probe
RF probe
Grounding bolt
Antenna
connectors
Lock
Extension
connector with
protection cover
Cable glands for
PSTN-, alarm line
or external LED
figure 12-2 Layout of the repeater heat sink
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User’s manual for channel selective repeater MRx41
12.3 Layout of the repeater ( lid )
Repeater lid
Lock
Cables to modem
Door contact
Control module
Mains switch
L1, L2, L3
Power supply
Battery backup
module
Accumulator
Local / remote
interface
Grounding
connection
figure 12-3 Layout of the repeater
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User’s manual for channel selective repeater MRx41
12.4 ARFCN / Frequency tables for MR341, MR441 and MR741
The following table provides all information about ARFCN and its corresponding
frequencies for the MR341 for UL and DL.
ARFCN
number
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
M0090a0a.doc
Frequency Frequency
MHz
MHz
UL
DL
890.2
935.2
890.4
935.4
890.6
935.6
890.8
935.8
891.0
936.0
891.2
936.2
891.4
936.4
891.6
936.6
891.8
936.8
892.0
937.0
892.2
937.2
892.4
937.4
892.6
937.6
892.8
937.8
893.0
938.0
893.2
938.2
893.4
938.4
893.6
938.6
893.8
938.8
894.0
939.0
894.2
939.2
894.4
939.4
894.6
939.6
894.8
939.8
895.0
940.0
895.2
940.2
895.4
940.4
895.6
940.6
895.8
940.8
896.0
941.0
896.2
941.2
896.4
941.4
896.6
941.6
896.8
941.8
897.0
942.0
897.2
942.2
897.4
942.4
897.6
942.6
897.8
942.8
898.0
943.0
Id.-No. 148092
ARFCN
number
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
Frequency
MHz
UL
898.2
898.4
898.6
898.8
899.0
899.2
899.4
899.6
899.8
900.0
900.2
900.4
900.6
900.8
901.0
901.2
901.4
901.6
901.8
902.0
902.2
902.4
902.6
902.8
903.0
903.2
903.4
903.6
903.8
904.0
904.2
904.4
904.6
904.8
905.0
905.2
905.4
905.6
905.8
906.0
Page 87
Frequency
MHz
DL
943.2
943.4
943.6
943.8
944.0
944.2
944.4
944.6
944.8
945.0
945.2
945.4
945.6
945.8
946.0
946.2
946.4
946.6
946.8
947.0
947.2
947.4
947.6
947.8
948.0
948.2
948.4
948.6
948.8
949.0
949.2
949.4
949.6
949.8
950.0
950.2
950.4
950.6
950.8
951.0
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User’s manual for channel selective repeater MRx41
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
M0090a0a.doc
906.2
906.4
906.6
906.8
907.0
907.2
907.4
907.6
907.8
908.0
908.2
908.4
908.6
908.8
909.0
909.2
909.4
909.6
909.8
910.0
910.2
910.4
951.2
951.4
951.6
951.8
952.0
952.2
952.4
952.6
952.8
953.0
953.2
953.4
953.6
953.8
954.0
954.2
954.4
954.6
954.8
955.0
955.2
955.4
Id.-No. 148092
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
Page 88
910.6
910.8
911.0
911.2
911.4
911.6
911.8
912.0
912.2
912.4
912.6
912.8
913.0
913.2
913.4
913.6
913.8
914.0
914.2
914.4
914.6
914.8
955.6
955.8
956.0
956.2
956.4
956.6
956.8
957.0
957.2
957.4
957.6
957.8
958.0
958.2
958.4
958.6
958.8
959.0
959.2
959.4
959.6
959.8
29-Mar-00
User’s manual for channel selective repeater MRx41
The following table provides all information about ARFCN and its corresponding
frequencies for the MR341 EGSM for UL and DL.
ARFCN
number
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
M0090a0a.doc
Frequency Frequency
MHz
MHz
UL
DL
880,2
925,2
880,4
925,4
880,6
925,6
880,8
925,8
881,0
926,0
881,2
926,2
881,4
926,4
881,6
926,6
881,8
926,8
882,0
927,0
882,2
927,2
882,4
927,4
882,6
927,6
882,8
927,8
883,0
928,0
883,2
928,2
883,4
928,4
883,6
928,6
883,8
928,8
884,0
929,0
884,2
929,2
884,4
929,4
884,6
929,6
884,8
929,8
885,0
930,0
Id.-No. 148092
ARFCN
number
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
Frequency Frequency
MHz
MHz
UL
DL
885,2
930,2
885,4
930,4
885,6
930,6
885,8
930,8
886,0
931,0
886,2
931,2
886,4
931,4
886,6
931,6
886,8
931,8
887,0
932,0
887,2
932,2
887,4
932,4
887,6
932,6
887,8
932,8
888,0
933,0
888,2
933,2
888,4
933,4
888,6
933,6
888,8
933,8
889,0
934,0
889,2
934,2
889,4
934,4
889,6
934,6
889,8
934,8
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User’s manual for channel selective repeater MRx41
The following table provides all information about ARFCN and its corresponding
frequencies for the MR441 for UL and DL.
ARFCN
number
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
M0090a0a.doc
Frequency Frequency
MHz
MHz
UL
DL
1710.2
1710.4
1710.6
1710.8
1711.0
1711.2
1711.4
1711.6
1711.8
1712.0
1712.2
1712.4
1712.6
1712.8
1713.0
1713.2
1713.4
1713.6
1713.8
1714.0
1714.2
1714.4
1714.6
1714.8
1715.0
1715.2
1715.4
1715.6
1715.8
1716.0
1716.2
1716.4
1716.6
1716.8
1717.0
1717.2
1717.4
1717.6
1805.2
1805.4
1805.6
1805.8
1806.0
1806.2
1806.4
1806.6
1806.8
1807.0
1807.2
1807.4
1807.6
1807.8
1808.0
1808.2
1808.4
1808.6
1808.8
1809.0
1809.2
1809.4
1809.6
1809.8
1810.0
1810.2
1810.4
1810.6
1810.8
1811.0
1811.2
1811.4
1811.6
1811.8
1812.0
1812.2
1812.4
1812.6
Id.-No. 148092
ARFCN
number
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
Frequency Frequency
MHz
MHz
UL
DL
1717.8
1812.8
1718.0
1813.0
1718.2
1813.2
1718.4
1813.4
1718.6
1813.6
1718.8
1813.8
1719.0
1814.0
1719.2
1814.2
1719.4
1814.4
1719.6
1814.6
1719.8
1814.8
1720.0
1815.0
1720.2
1815.2
1720.4
1815.4
1720.6
1815.6
1720.8
1815.8
1721.0
1816.0
1721.2
1816.2
1721.4
1816.4
1721.6
1816.6
1721.8
1816.8
1722.0
1817.0
1722.2
1817.2
1722.4
1817.4
1722.6
1817.6
1722.8
1817.8
1723.0
1818.0
1723.2
1818.2
1723.4
1818.4
1723.6
1818.6
1723.8
1818.8
1724.0
1819.0
1724.2
1819.2
1724.4
1819.4
1724.6
1819.6
1724.8
1819.8
1725.0
1820.0
1725.2
1820.2
1725.4
1820.4
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User’s manual for channel selective repeater MRx41
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
M0090a0a.doc
1725.6
1725.8
1726.0
1726.2
1726.4
1726.6
1726.8
1727.0
1727.2
1727.4
1727.6
1727.8
1728.0
1728.2
1728.4
1728.6
1728.8
1729.0
1729.2
1729.4
1729.6
1729.8
1730.0
1730.2
1730.4
1730.6
1730.8
1731.0
1731.2
1731.4
1731.6
1731.8
1732.0
1732.2
1732.4
1732.6
1732.8
1733.0
1733.2
1733.4
1733.6
1733.8
1734.0
1734.2
1820.6
1820.8
1821.0
1821.2
1821.4
1821.6
1821.8
1822.0
1822.2
1822.4
1822.6
1822.8
1823.0
1823.2
1823.4
1823.6
1823.8
1824.0
1824.2
1824.4
1824.6
1824.8
1825.0
1825.2
1825.4
1825.6
1825.8
1826.0
1826.2
1826.4
1826.6
1826.8
1827.0
1827.2
1827.4
1827.6
1827.8
1828.0
1828.2
1828.4
1828.6
1828.8
1829.0
1829.2
Id.-No. 148092
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
1734.4
1734.6
1734.8
1735.0
1735.2
1735.4
1735.6
1735.8
1736.0
1736.2
1736.4
1736.6
1736.8
1737.0
1737.2
1737.4
1737.6
1737.8
1738.0
1738.2
1738.4
1738.6
1738.8
1739.0
1739.2
1739.4
1739.6
1739.8
1740.0
1740.2
1740.4
1740.6
1740.8
1741.0
1741.2
1741.4
1741.6
1741.8
1742.0
1742.2
1742.4
1742.6
1742.8
1743.0
Page 91
1829.4
1829.6
1829.8
1830.0
1830.2
1830.4
1830.6
1830.8
1831.0
1831.2
1831.4
1831.6
1831.8
1832.0
1832.2
1832.4
1832.6
1832.8
1833.0
1833.2
1833.4
1833.6
1833.8
1834.0
1834.2
1834.4
1834.6
1834.8
1835.0
1835.2
1835.4
1835.6
1835.8
1836.0
1836.2
1836.4
1836.6
1836.8
1837.0
1837.2
1837.4
1837.6
1837.8
1838.0
29-Mar-00
User’s manual for channel selective repeater MRx41
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
M0090a0a.doc
1743.2
1743.4
1743.6
1743.8
1744.0
1744.2
1744.4
1744.6
1744.8
1745.0
1745.2
1745.4
1745.6
1745.8
1746.0
1746.2
1746.4
1746.6
1746.8
1747.0
1747.2
1747.4
1747.6
1747.8
1748.0
1748.2
1748.4
1748.6
1748.8
1749.0
1749.2
1749.4
1749.6
1749.8
1750.0
1750.2
1750.4
1750.6
1750.8
1751.0
1751.2
1751.4
1751.6
1751.8
1838.2
1838.4
1838.6
1838.8
1839.0
1839.2
1839.4
1839.6
1839.8
1840.0
1840.2
1840.4
1840.6
1840.8
1841.0
1841.2
1841.4
1841.6
1841.8
1842.0
1842.2
1842.4
1842.6
1842.8
1843.0
1843.2
1843.4
1843.6
1843.8
1844.0
1844.2
1844.4
1844.6
1844.8
1845.0
1845.2
1845.4
1845.6
1845.8
1846.0
1846.2
1846.4
1846.6
1846.8
Id.-No. 148092
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
1752.0
1752.2
1752.4
1752.6
1752.8
1753.0
1753.2
1753.4
1753.6
1753.8
1754.0
1754.2
1754.4
1754.6
1754.8
1755.0
1755.2
1755.4
1755.6
1755.8
1756.0
1756.2
1756.4
1756.6
1756.8
1757.0
1757.2
1757.4
1757.6
1757.8
1758.0
1758.2
1758.4
1758.6
1758.8
1759.0
1759.2
1759.4
1759.6
1759.8
1760.0
1760.2
1760.4
1760.6
Page 92
1847.0
1847.2
1847.4
1847.6
1847.8
1848.0
1848.2
1848.4
1848.6
1848.8
1849.0
1849.2
1849.4
1849.6
1849.8
1850.0
1850.2
1850.4
1850.6
1850.8
1851.0
1851.2
1851.4
1851.6
1851.8
1852.0
1852.2
1852.4
1852.6
1852.8
1853.0
1853.2
1853.4
1853.6
1853.8
1854.0
1854.2
1854.4
1854.6
1854.8
1855.0
1855.2
1855.4
1855.6
29-Mar-00
User’s manual for channel selective repeater MRx41
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
M0090a0a.doc
1760.8
1761.0
1761.2
1761.4
1761.6
1761.8
1762.0
1762.2
1762.4
1762.6
1762.8
1763.0
1763.2
1763.4
1763.6
1763.8
1764.0
1764.2
1764.4
1764.6
1764.8
1765.0
1765.2
1765.4
1765.6
1765.8
1766.0
1766.2
1766.4
1766.6
1766.8
1767.0
1767.2
1767.4
1767.6
1767.8
1768.0
1768.2
1768.4
1768.6
1768.8
1769.0
1769.2
1769.4
1855.8
1856.0
1856.2
1856.4
1856.6
1856.8
1857.0
1857.2
1857.4
1857.6
1857.8
1858.0
1858.2
1858.4
1858.6
1858.8
1859.0
1859.2
1859.4
1859.6
1859.8
1860.0
1860.2
1860.4
1860.6
1860.8
1861.0
1861.2
1861.4
1861.6
1861.8
1862.0
1862.2
1862.4
1862.6
1862.8
1863.0
1863.2
1863.4
1863.6
1863.8
1864.0
1864.2
1864.4
Id.-No. 148092
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
1769.6
1769.8
1770.0
1770.2
1770.4
1770.6
1770.8
1771.0
1771.2
1771.4
1771.6
1771.8
1772.0
1772.2
1772.4
1772.6
1772.8
1773.0
1773.2
1773.4
1773.6
1773.8
1774.0
1774.2
1774.4
1774.6
1774.8
1775.0
1775.2
1775.4
1775.6
1775.8
1776.0
1776.2
1776.4
1776.6
1776.8
1777.0
1777.2
1777.4
1777.6
1777.8
1778.0
1778.2
Page 93
1864.6
1864.8
1865.0
1865.2
1865.4
1865.6
1865.8
1866.0
1866.2
1866.4
1866.6
1866.8
1867.0
1867.2
1867.4
1867.6
1867.8
1868.0
1868.2
1868.4
1868.6
1868.8
1869.0
1869.2
1869.4
1869.6
1869.8
1870.0
1870.2
1870.4
1870.6
1870.8
1871.0
1871.2
1871.4
1871.6
1871.8
1872.0
1872.2
1872.4
1872.6
1872.8
1873.0
1873.2
29-Mar-00
User’s manual for channel selective repeater MRx41
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
M0090a0a.doc
1778.4
1778.6
1778.8
1779.0
1779.2
1779.4
1779.6
1779.8
1780.0
1780.2
1780.4
1780.6
1780.8
1781.0
1781.2
1781.4
1781.6
1873.4
1873.6
1873.8
1874.0
1874.2
1874.4
1874.6
1874.8
1875.0
1875.2
1875.4
1875.6
1875.8
1876.0
1876.2
1876.4
1876.6
Id.-No. 148092
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
1781.8
1782.0
1782.2
1782.4
1782.6
1782.8
1783.0
1783.2
1783.4
1783.6
1783.8
1784.0
1784.2
1784.4
1784.6
1784.8
Page 94
1876.8
1877.0
1877.2
1877.4
1877.6
1877.8
1878.0
1878.2
1878.4
1878.6
1878.8
1879.0
1879.2
1879.4
1879.6
1879.8
29-Mar-00
User’s manual for channel selective repeater MRx41
The following table provides all information about ARFCN and its corresponding
frequencies for the MR741 for UL and DL.
ARFCN
number
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
M0090a0a.doc
Frequency Frequency
MHz
MHz
UL
DL
1850.2
1930.2
1850.4
1930.4
1850.6
1930.6
1850.8
1930.8
1851.0
1931.0
1851.2
1931.2
1851.4
1931.4
1851.6
1931.6
1851.8
1931.8
1852.0
1932.0
1852.2
1932.2
1852.4
1932.4
1852.6
1932.6
1852.8
1932.8
1853.0
1933.0
1853.2
1933.2
1853.4
1933.4
1853.6
1933.6
1853.8
1933.8
1854.0
1934.0
1854.2
1934.2
1854.4
1934.4
1854.6
1934.6
1854.8
1934.8
1855.0
1935.0
1855.2
1935.2
1855.4
1935.4
1855.6
1935.6
1855.8
1935.8
1856.0
1936.0
1856.2
1936.2
1856.4
1936.4
1856.6
1936.6
1856.8
1936.8
1857.0
1937.0
1857.2
1937.2
1857.4
1937.4
1857.6
1937.6
1857.8
1937.8
Id.-No. 148092
ARFCN
number
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
Frequency Frequency
MHz
MHz
UL
DL
1858.0
1938.0
1858.2
1938.2
1858.4
1938.4
1858.6
1938.6
1858.8
1938.8
1859.0
1939.0
1859.2
1939.2
1859.4
1939.4
1859.6
1939.6
1859.8
1939.8
1860.0
1940.0
1860.2
1940.2
1860.4
1940.4
1860.6
1940.6
1860.8
1940.8
1861.0
1941.0
1861.2
1941.2
1861.4
1941.4
1861.6
1941.6
1861.8
1941.8
1862.0
1942.0
1862.2
1942.2
1862.4
1942.4
1862.6
1942.6
1862.8
1942.8
1863.0
1943.0
1863.2
1943.2
1863.4
1943.4
1863.6
1943.6
1863.8
1943.8
1864.0
1944.0
1864.2
1944.2
1864.4
1944.4
1864.6
1944.6
1864.8
1944.8
1865.0
1945.0
1865.2
1945.2
1865.4
1945.4
1865.6
1945.6
Page 95
29-Mar-00
User’s manual for channel selective repeater MRx41
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
M0090a0a.doc
1865.8
1866.0
1866.2
1866.4
1866.6
1866.8
1867.0
1867.2
1867.4
1867.6
1867.8
1868.0
1868.2
1868.4
1868.6
1868.8
1869.0
1869.2
1869.4
1869.6
1869.8
1870.0
1870.2
1870.4
1870.6
1870.8
1871.0
1871.2
1871.4
1871.6
1871.8
1872.0
1872.2
1872.4
1872.6
1872.8
1873.0
1873.2
1873.4
1873.6
1873.8
1874.0
1874.2
1874.4
1945.8
1946.0
1946.2
1946.4
1946.6
1946.8
1947.0
1947.2
1947.4
1947.6
1947.8
1948.0
1948.2
1948.4
1948.6
1948.8
1949.0
1949.2
1949.4
1949.6
1949.8
1950.0
1950.2
1950.4
1950.6
1950.8
1951.0
1951.2
1951.4
1951.6
1951.8
1952.0
1952.2
1952.4
1952.6
1952.8
1953.0
1953.2
1953.4
1953.6
1953.8
1954.0
1954.2
1954.4
Id.-No. 148092
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
1874.6
1874.8
1875.0
1875.2
1875.4
1875.6
1875.8
1876.0
1876.2
1876.4
1876.6
1876.8
1877.0
1877.2
1877.4
1877.6
1877.8
1878.0
1878.2
1878.4
1878.6
1878.8
1879.0
1879.2
1879.4
1879.6
1879.8
1880.0
1880.2
1880.4
1880.6
1880.8
1881.0
1881.2
1881.4
1881.6
1881.8
1882.0
1882.2
1882.4
1882.6
1882.8
1883.0
1883.2
Page 96
1954.6
1954.8
1955.0
1955.2
1955.4
1955.6
1955.8
1956.0
1956.2
1956.4
1956.6
1956.8
1957.0
1957.2
1957.4
1957.6
1957.8
1958.0
1958.2
1958.4
1958.6
1958.8
1959.0
1959.2
1959.4
1959.6
1959.8
1960.0
1960.2
1960.4
1960.6
1960.8
1961.0
1961.2
1961.4
1961.6
1961.8
1962.0
1962.2
1962.4
1962.6
1962.8
1963.0
1963.2
29-Mar-00
User’s manual for channel selective repeater MRx41
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
M0090a0a.doc
1883.4
1883.6
1883.8
1884.0
1884.2
1884.4
1884.6
1884.8
1885.0
1885.2
1885.4
1885.6
1885.8
1886.0
1886.2
1886.4
1886.6
1886.8
1887.0
1887.2
1887.4
1887.6
1887.8
1888.0
1888.2
1888.4
1888.6
1888.8
1889.0
1889.2
1889.4
1889.6
1889.8
1890.0
1890.2
1890.4
1890.6
1890.8
1891.0
1891.2
1891.4
1891.6
1891.8
1892.0
1963.4
1963.6
1963.8
1964.0
1964.2
1964.4
1964.6
1964.8
1965.0
1965.2
1965.4
1965.6
1965.8
1966.0
1966.2
1966.4
1966.6
1966.8
1967.0
1967.2
1967.4
1967.6
1967.8
1968.0
1968.2
1968.4
1968.6
1968.8
1969.0
1969.2
1969.4
1969.6
1969.8
1970.0
1970.2
1970.4
1970.6
1970.8
1971.0
1971.2
1971.4
1971.6
1971.8
1972.0
Id.-No. 148092
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
1892.2
1892.4
1892.6
1892.8
1893.0
1893.2
1893.4
1893.6
1893.8
1894.0
1894.2
1894.4
1894.6
1894.8
1895.0
1895.2
1895.4
1895.6
1895.8
1896.0
1896.2
1896.4
1896.6
1896.8
1897.0
1897.2
1897.4
1897.6
1897.8
1898.0
1898.2
1898.4
1898.6
1898.8
1899.0
1899.2
1899.4
1899.6
1899.8
1900.0
1900.2
1900.4
1900.6
1900.8
Page 97
1972.2
1972.4
1972.6
1972.8
1973.0
1973.2
1973.4
1973.6
1973.8
1974.0
1974.2
1974.4
1974.6
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User’s manual for channel selective repeater MRx41
Index
Environmental and safety 46
Abbreviations 8
Address of MIKOM 11
Alarm history 28, 59
Alarms
Acknowledgement of 30
External alarms 44
Handling of 30
Indication with LEDs 28
List of all alarms 29
Relay contact 28
ALC 19, 28
ALC threshold 28
Antenna connectors 52
Functional description 14
Gain
Settings via modem 33
Grounding 51
Health and safety warnings 10
AT commands 32
Battery backup module 37
BITE 28
Boot process 59
Channel
Setting of 55
Setting via PC 56
Channel / frequency table MR341 87
Channel / frequency table MR341EGSM 89
Channel / frequency table MR441 90
Channel / frequency table MR741 95
Channel selectivity 26
Combiner 24
Configuration list 76
Configurations 14
eight channel system 17
four channel system 16
one channel system 14
six channel system 17
two channel system 15
Contents of delivery 9
Control module 21
Conversion modules 18
Basic module 18
Extension modules 18
DigiTel 34P 33
DL output power 26
Duplexer 18, 24
LEDs 28
Local settings 54, 56
M1 modem 34
Maintenance 61
Mikom part numbers 70, 72, 74
Modem 56
Modem types
PSTN 33
wireless modem 34
Mother board 20
Pole mount procedure 49
Power connection 52
Power supply 24
Remote control via modem 32
Replacement of
Power supply 62
Replacement of
battery backup module 65
EEPROM 19, 21
M0090a0a.doc
I²C-Bus 21
ICE module 41, 69
Installation
electrical 51
Mechanical 47
Intended purpose 13
Interfaces 21
RS232 21
International sales offices 12
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User’s manual for channel selective repeater MRx41
connecting board 69
Conversion modules 68
duplexer 66
ICE module 69
mains cable 63
mains fuses 62
PSTN modem 67
RAM / RTC battery 64
RF probes 24
Rotary switch
To set address of Repeater unit 20
To set channels 55
To set the gain 54
RSSI module 43
Spare parts kit 9
Spare parts list 70
Specifications
electrical 77, 79, 81
mechanical 46
Status report 31
Synthesizer 19
Termination module 19
Traffic statistic module 39
Trouble shooting 58
Wall mount procedure 48
Setting to work 53
Severity levels 31
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