Andrew EOCELL24RMT User Manual
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Installation and Users Guide
Copyright Andrew Corporation
February 2008
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Proprietary Information
This document is the property of Andrew Corporation. The information contained herein is
proprietary to Andrew, and no part of this document may be reproduced or transmitted in any
form or by any means, electronic or mechanical, for any purpose, without the express written
permission of Andrew.
Disclaimer
Andrew reserves the right to make changes, without notice, to the specifications and materials
contained herein. While we have worked diligently to insure every element presented is correct,
we shall not be responsible for errors. For the latest product information and technical
specifications, please see the contact information below.
© Copyright Andrew Corporation, February 2008, Printed in USA, All rights reserved.
FCC Notice
This equipment complies with Part 15 of the FCC rules. Any changes or modifications not
expressly approved by the manufacturer could void the user’s authority to operate the equipment.
Warnings
All persons must be 30 cm or more from the system antennas to comply with FCC rules for RF
exposure from spread spectrum transmitters in the 2400 MHz band.
This device has been designed to operate with an antenna having a maximum gain of 12 dB.
Antenna having a higher gain is strictly prohibited per regulations of Industry Canada. The
required antenna impedance is 50 ohms.
To reduce potential radio interference to other users, the antenna type and its gain should be so
chosen that the equivalent isotropic radiated power (EIRP) is not more than that required for
successful communication.
Trademarks
EOCell™ is a trademark of Andrew Corporation. All other trademarks belong to their respective
owner.
ii
Contact Information
For more information about Andrew’s capabilities to extend RF signals coverage into structures,
including office buildings, shopping complexes, warehouses, tunnels, and mines, please contact
us using the information below:
Andrew Corporation
Distributed Communications Systems
2601 Telecom Parkway
Richardson, Texas 75082
Attention: Mr. Matthew Thomas
E-mail:matthew.thomas@andrew.com
Fax: (972) 952-0018
Voice: (972) 952-9700
Andrew Corporation
Andrew Corporation is a global designer, manufacturer, and supplier of communications
equipment, services, and systems. Andrew products and expertise are found in communications
systems throughout the world; including wireless and distributed communications, land mobile
radio, cellular and personal communications, broadcast, radar, and navigation. The Andrew
"Flash" trademark seen on the cover can also be seen in every corner of the world on broadcast
towers and microwave antennas, HELIAX® and RADIAX® cables, communications and
computer networking equipment. The mark of Andrew for more than 60 years, it is the
benchmark of quality wherever it appears. It is a symbol of commitment to customer satisfaction
from the 4,500-plus employees of Andrew Corporation. We are listed on the NASDAQ stock
exchange under symbol “ANDW.” To learn more about us, please visit our web site at
www.andrew.com.
Andrew In-Building Wireless Experience
The Andrew Corporation Wireless Innovations Group (WIG) has over 15 years experience
designing, installing, and managing large complex RF distribution systems for metropolitan
railways, building owners, and public mobile radio and telephone operators throughout the
world. For clients who do not need turnkey solutions, we offer product sales or product sales
with engineering support services.
Andrew offers a range of products to meet requirements of the in-building market. In the early
1980’s Andrew developed leaky cables as an adjunct to our coaxial cable business. This product
quickly led us to pursuing and executing wireless RF coverage in confined spaces such as
metros, road tunnels, and buildings. Through these projects, our Distributed Communications
Systems division acquired critical experience in project management and RF engineering of
these systems.
iii
Section 1: 2400 MHz EOCell™ Transceiver System Description .........................................1-1
Section 2: 2400 MHz EOCell™ Transceiver System Equipment Description.....................2-1
Section 3: 2400 MHz EOCell™ System Cabling.....................................................................3-1
Section 4: Implementations Using the Andrew EOCell™ System........................................4-1
Section 5: EOCell™ Network Monitoring Capabilities.........................................................5-1
Section 6: Fiber Optic Cable Installation Guide.....................................................................6-1
iv
Section 1: 2400 MHz EOCell™ Transceiver System Description
2400 MHz EOCell™ Transceiver System
2400 MHz EOCell™ Transceiver Electrical System Specifications Page 1-3
Page 1-2
2400 MHz EOCell™ Transceiver System Mechanical/Environmental
Specifications
2400 MHz EOCell™ Transceiver System Theory of Operation
Downlink Signal Flow Page 1-7
Uplink Signal Flow Page 1-7
Page 1-5
Page 1-6
1-1
• 2400 MHz EOCell™ Transceiver System
The Andrew 2400 MHz EOCell™ Transceiver System is an RF to Fiber system for
Bombardier’s second generation ATC Radio System. The 2400 MHz EOCell™ Transceiver
System interfaces directly with a BTS / radio and distributes the RF signals to a distributed
antenna system that provide improved downlink and uplink performance. The 2400 MHz
EOCell™ system uses multiple Remote Fiber Fed Amplifier Units (RFFAUs) located within the
building or tunnel to optimize communications with portables and mobile radios. Each RFFAU
is connected to a EOCell™ Master Rack by two single mode fiber optic cables that provide
downlink and uplink signals to and from the RFFAUs.
The Andrew 2400 MHz EOCell™ Transceiver System is used to provide a wireless RF network
infrastructure within buildings, high rises, shopping malls, airports, tunnels and other confined
structures where outside wireless signals do not penetrate or propagate well. The 2400 MHz
EOCell™ system allows portable and mobile radio users to use their radios in indoor areas that
previously could not communicate with the wireless communication system.
Key 2400 MHz EOCell™ features:
• The 2400 MHz EOCell™ Transceiver System operates with Bombardier second
generation ATC Radio System.
• High downlink output power and low uplink noise figure result in an indoor Distributed
Antenna System (DAS) with a large coverage area.
• Predictable performance reduces design and implementation time.
• Single mode fiber optic cable used for wide bandwidth and low loss.
• Supports spread spectrum modulation in the 2400 MHz frequency band.
• Easy to install, only 2 small cables required to each remote amplifier unit.
• Flexible installation, cabling and configuration for multiple applications.
• Direct optical modulation of laser diode, no frequency up and down conversion.
• Continuous system built-in-test function provides remote alarm and local indicators in
case of faults in the equipment or the fiber optic cables.
The 2400 MHz EOCell™ Transceiver System uses low-loss fiber optic cables to distribute the
wireless signal throughout the building/tunnel to multiple remote antennas. The single mode
fiber optic cables used in the 2400 MHz EOCell system ensures that each of the RFFAU has
predictable coverage area and RF performance, regardless of how far the remote antenna is from
the central RF hub. The basic 2400 MHz EOCell system consists of one Master Fiber Optic
Transceiver Chassis (MFOTC) that interfaces with up to eight (8) Remote Fiber Fed Amplifier
Units.
1-2
The 2400 MHz EOCell Transceiver System is designed to interface to the external wireless
infrastructure by directly interfacing to an indoor base station / base radio through a coax jumper.
The 2400 MHz EOCell Transceiver System converts the RF signals from the base station / base
radio and the portable and mobile radios into optical signals. The 2400 MHz EOCell
Transceiver System, uses low loss fiber optic cables to distribute the optical signals throughout
the required coverage area, and then converts the signals back to RF signals for radio
transmission.
The 2400 MHz EOCell Transceiver System is designed to cover large areas with a minimum
amount of hardware and cabling, reducing system cost, installation time and maintenance. The
2400 MHz EOCell Transceiver System can support 24 RFFAUs per base station / base radio.
Figure 1-1 shows one 2400 MHz EOCell MFOTC that has 8 transceivers, an alarm board, and a
two (2) power supply modules. Only one power supply module is necessary, but a second can be
used for redundancy.
Figure 1-1. 2400 MHz EOCell™ MFOTC
The 385700-5000-001 to -004 systems consist of the Andrew EOCell Remote model number
385700-5000, the Andrew EOCell Master model number 385700-6000 and the Invensys Safetran
Spread Spectrum Radio model number ATC-24027 and Andrew RADIAX antenna p/n (s)
RCT6-S-1A-AX, RCT6-S-1A-RN, RCT6-S-1A-RNT1 or RCT6-S-1A-RNT. The electrical
characteristics are equal on all RADIAX antennas. The main difference between RADIAX types
is the fire rating. The system can also be used with a horn antenna up to 12dBi.
1-3
2400 MHz EOCell™ Transceiver Electrical System Specifications
PARAMETERS SPECIFICATIONS
Downlink Frequency Band 2440 – 2480 MHz
Uplink Frequency Band 2400 – 2440 MHz
Maximum number of remote cells per base
station / base radio
Maximum distance between Master and
Remote
Master Chassis Downlink (TX) Signal Level at
MFOTC TX input
Remote Downlink Signal Level Output
(maximum) *
System Antenna Interface (remote) N-female connector. One-port model, Dual
Diagnostic Alarms Failure of optical signals, power amplifiers,
* For equipment operated in the United States, the Remote Downlink Signal Level Output (in
dBm), the Output (per port) is specified based on the number of fiber optic transceivers
configured in the MFOTC and antenna selection as shown in Table 1-1:
Using 12 dBi Fixed Point-to-Point Antenna
No. of transceivers in MFOTC
1 2 3 4 5 6 7 8
1-port model
2-port model
3-port model
4-port model
No. of transceivers in MFOTC
1 2 3 4 5 6 7 8
1-port model
2-port model
3-port model
4-port model
+27.5 +24.5 +23.0 +21.5 +20.5 +20.0 +19.0 +18.5
+24.5 +21.5 +20.0 +18.5 +17.5 +17.0 +16.5 +15.5
+23.0 +20.0 +18.0 +17.0 +16.0 +15.0 +14.5 +14.0
+21.5 +18.5 +17.0 +15.5 +14.5 +14.0 +13.5 +12.5
Using Radiating (RADIAX
+27.5 +26.5 +25.0 +23.5 +22.5 +22.0 +21.0 +20.5
+26.5 +23.5 +22.0 +20.5 +20.0 +19.0 +18.5 +17.5
+25.0 +22.0 +20.0 +19.0 +18.0 +17.0 +16.5 +16.0
+23.5 +20.5 +19.0 +17.5 +16.5 +16.0 +15.5 +14.5
24
20 km
+5 dBm
+27.5 dBm min (1-port model)
+24.0 dBm min (2-port model)
+22.5 dBm min (3-port model)
+20.5 dBm min (4-port model)
port (internal 2-way power splitter), Three-port
(internal 3-way power splitter) and Four-port
(internal 4-way power splitter).
LNAs, and thermal limits
®
) Cable Antenna
Table 1-1. 2400 MHz EOCell™ Transceiver System Specification
1-4
• 2400 MHzEOCell™ Transceiver System
Mechanical/Environmental Specifications
PARAMETERS SPECIFICATIONS
AC Input Power 110 – 230 VAC (50-60 Hz)
Operating Temperature Range -40 to +60C (heater provided by Bombardier
for operation below –20 C). Space and power
for heater inside enclosure.
Remote Fiber Optic Cable Entry Conduit knockout (1.375 in diameter circular
opening), bottom entry. Identified with “FO”
on external surface of enclosure.
Remote Power Cable Entry Conduit knockout (1.375 in diameter circular
opening), bottom entry. Identified with “110230VAC” on the external surface of enclosure.
Internal circuit breaker for AC. High voltage
terminals (if any) must be covered for safety.
Remote RF Connection Bulkhead N-female, bottom entry. Identified
with “RF1”, “RF2”, “RF3”, “RF4” on bottom
of enclosure.
Remote Chassis Ground External ground stud, side of enclosure. Size
suitable for AWG #4 cable.
Remote Enclosure NEMA 4X. Hinged access cover. Optional
fully-removable cover to be made available.
Remote Electromagnetic Compatibility Surge suppression on AC power and RF
connection. Complies with applicable FCC,
CSA and CE standards.
Per unit (remote or master) reliability >50,000 hour MTBF
Remote Weight 59 lbs (26.7 kg) maximum
Remote Mounting 4 external mounting lugs (two top / two
bottom). Size of lugs to be determined by
weight of unit.
Master Rack Chassis Dim. 19 in. x 15.8 in. x 6.41 in.
Remote Amplifier Chassis Dim. 20 in. x 16 in. x 8 in.
Remote Amplifier Enclosure Type Wall Mount
Fiber Optic Connections FC/APC
Fiber Optic Cable Single Mode
Table 1-2. 2400 MHz EOCell™ Transceiver System Specification
1-5
• 2400 MHz EOCell™ Transceiver System Theory of Operation
Since no two in-building or tunnel coverage requirements are the same, in-building/tunnel RF
coverage solutions may involve one or a combination of RF coverage methods. Andrew can
provide several solutions to optimize the indoor RF coverage for a wide range of indoor
applications. The 2400 MHz EOCell™ Transceiver System complements other Andrew inbuilding RF coverage methods such as passive and active leaky feeder RF distribution networks
using Radiax cable, passive distributed antenna systems and active distributed antenna systems.
In-building wireless systems are typically connected to a BTS / radio system located within the
building.
The 2400 MHz EOCell™ Transceiver System uses low loss single mode fiber optic cables to
distribute the uplink and downlink signals throughout buildings or tunnels.
The 2400 MHz EOCell Transceiver System uses direct analog modulation of the RF signal onto
the optical signal through a laser diode. The modulated optical signal from the laser travels over
the fiber optic cable to a photo diode, which converts the optical signal back to an electrical
signal. There is no frequency conversion (i.e. mixing the signal up and down to an IF
frequency). Because of the direct RF to optical conversion, the 2400 MHz EOCell system is
technology transparent, easily passing any type of modulation.
Master Fiber Optic
To/From BTS or
Radio
1:3
Duplexer
To/From
MFOTC
Transceiver Chassis
DL
UL
E
Up to 8 RFFAUs Remote Fiber
DL
O
UL
Fed Amplifier Unit
Radiax
O
E
Radiax
Figure 1-2. 2400 MHz EOCell™ Transceiver System Block Diagram
1-6
• Downlink Signal Flow
The downlink signal is the signal that is transmitted from the base station / base radio and
received by the portable or mobile radio. In the 2400 MHz EOCell™ Transceiver System the
MFOTC receives the downlink RF signal from a base station / base radio, converts the signal
into multiple identical optical signals and distributes the optical signals to RFFAUs that are
located throughout the coverage area. The RFFAU receives the optical downlink signal and
converts it back to an RF signal, which is then broadcast to portable and mobile radios located
within the coverage area.
If the 2400 MHz EOCell Transceiver System is connected directly to indoor base station / base
radio equipment, the downlink is supplied to the MFOTC via a coax cable from the base station /
base radio.
The wireless downlink signal is received through the Type N connector on the rear panel of the
MFOTC and is split into multiple identical RF signals, one for each fiber optic transceiver in the
MFOTC. A laser diode at each MFOTC transceiver converts the RF signal into an optical signal.
The optical signal for each MFOTC transceiver is transmitted through the Tx fiber optic
bulkhead connector, through a single mode fiber optic cable to the Rx fiber optic connector on
the RFFAU.
The RFFAU converts the optical downlink signal back to an RF signal using a photodiode. The
RF downlink signal is amplified, filtered and then passed through the RFFAU Type N connector
to an antenna or leaky feeder cable where it is transmitted to the portable or m obile radio.
• Uplink Signal Flow
The uplink signal is the signal that is transmitted from the portable or mobile radio and received
by the base station / base radio. In the 2400 MHz EOCell Transceiver System, an antenna or
leaky feeder cable receives the uplink RF signal from the portable or mobile radio and passes the
uplink signal to the RFFAU through the Type N connector located on the bottom panel of the
RFFAU. The RFFAU amplifies and filters the uplink RF signal and then converts the RF signal
into an optical signal using a laser diode. The optical signal passes through the Tx fiber optic
connector, through a single mode fiber optic cable to the Rx fiber optic bulkhead connector on
the MFOTC.
The MFOTC converts the received optical uplink signal back to an RF signal with a photodiode.
The uplink signals from each of the remote amplifier units are combined together to pass through
the Type N RF connector on the back of the MFOTC and then up to the base station / base radio.
1-7
Users Guide - Andrew 2400 EOCell™ Fiber Optic Distributed Antenna System
Section 2:
2400 MHz EOCell™ Transceiver System Equipment Description
MFOTC Description Page 2-2
MFOTC AC Power Interface Page 2-3
MFOTC RF Interface Page 2-3
MFOTC Optical Interface Page 2-3
MFOTC Front Panel Page 2-3
MFOTC Rear Panel Page 2-5
2400 MHz EOCell ™ Remote Fiber Fed Amplifier Unit (RFFAU) Page 2-5
RFFAU RF Interface Page 2-5
RFFAU Optical Interface
RFFAU Bottom Panel Page 2-8
Page 2-7
2-1
Users Guide - Andrew 2400 EOCell™ Fiber Optic Distributed Antenna System
• MFOTC Description
The Master Fiber Optic Transceiver Chassis (MFOTC) is the central hub of the 2400 MHz
EOCell™ Transceiver System. The MFOTC is housed in a standard 4U tall, 19” rack mount
chassis for mounting in equipment racks or telecom racks. The MFOTC interfaces to the
external wireless infrastructure through an in-building base station / base radio that sends and
receives signals to an outdoor base station / base radio that is located nearby the building.
The MFOTC simultaneously passes the RF downlink signal from the base station / base radio to
the indoor portable and mobile radios while passing RF uplink signals from the indoor portable
and mobile radios to the base station / base radio. The MFOTC splits the downlink RF signals
for distribution to up to eight (8) Remote Fiber Fed Amplifier Units (RFFAUs) via fiber optic
interfaces. The MFOTC also receives and combines the uplink signals from up to eight (8)
RFFAUs for distribution to the base station / base radio.
For system fault detection, the MFOTC transceivers communicate alarms on an FSK sub-carrier
that is used to continuously monitor uplink and downlink signal paths. Faults with any of the
RFFAUs or any of the optical downlink or uplink cables cause software alarms available from
the alarm board in the MFOTC. The LEDs on the RRFAU and MFOTC transceivers will also
show errors as described in table 5-1.
The MFOTC chassis is equipped for rack mounting in standard equipment racks as mentioned
above.
Figure 2-1. 2400 MHz EOCell™ Master Fiber Optic Transceiver Chassis (MFOTC)
2-2
Users Guide - Andrew 2400 EOCell™ Fiber Optic Distributed Antenna System
MFOTC features are listed below:
• MFOTC functions as the heart of the Distributed Antenna System (DAS).
• Multiple MFOTCs may be used together to create large DAS systems.
• MFOTC with an alarm board can provide continuous system fault detection via an RS-
232 connection.
• Easily installed in a standard 19” equipment rack or telecom rack.
• MFOTC AC Power Interface
To allow operation in a wide number of applications and locations, the MFOTC operates from
international AC power. The MFOTC uses 110 to 230 VAC, 50-60 Hz. The MFOTC uses
approximately 100 watts of power when a full system of eight (8) RFFAUs, one (1) Alarm
Module and one (2) AC/DC Power Supplies are mounted in the chassis.
• MFOTC RF Interface
The MFOTC RF interface is through the Type N connectors located on the rear panel. The
Type-N RF connectors are uni-directional. The downlink connector passes RF downlink signals
from the base station / base radio to portable and mobile radios and the uplink connector passes
RF uplink signals from portable and mobile radios to the base station / base radio.
• MFOTC Optical Interface
The MFOTC optical interface is through the fiber optic connectors located on the front of the
MFOTC. Each optical transceiver has a pair of fiber optic links. The downlink path carries the
optical signal from the base station / base radio to the RFFAU for transmission to portable and
mobile radios. The uplink path carries the optical signal from the RFFAU to the MFOTC to
transmit the signal from portable and mobile radios to the base station / base radio.
The MFOTC and RFFAU fiber optic connections are all type FC/APC. The system uses single
mode fiber optic cables to provide low loss, and wide bandwidth signal capabilities.
• MFOTC Front Panel
The figure below provides a detailed view of the MFOTC front panel, showing eight (8)
transceivers. Each of the eight (8) transceivers are identical and provide an optical downlink
interface and an optical uplink interface with an RFFAU.
Each RFFAU has Data, Tx and Rx LEDs. These indicators provide the status of the Remote
Fiber Fed Amplifier Unit and the fiber optic uplink and downlink signal paths. The status
indicators are described in table 5-1.
2-3
Users Guide - Andrew 2400 EOCell™ Fiber Optic Distributed Antenna System
RxD
TxD
Data
Data
Tx
Tx
Tx
Rx
Data
Tx
Tx
Tx
Tx
Rx
Rx
Data
Data
Tx
Tx
Rx
Tx
Tx
Rx
Tx
Tx
Rx
Tx
Tx
Tx
Rx
Rx
Data
Data
Data
Faults
1
2
CPU
Local
AC/DC
DC/DC
pph6-.375
Fiber
Rx
Tx
Tx
Rx
Rx
Fiber
Transceiver
ALM1
Alarm
PSU2
Power Supply
Rx
Fiber
Transceiver
Rx
Rx
Fiber
Rx
Tx
Rx
Fiber
Transceiver
Tx
Tx
Rx
Rx
Fiber
Transceiver
Transceiver
Rx
Tx
Tx
Rx
Rx
Fiber
Transceiver
Rx
Fiber
Transceiver
Rx
Tx
Rx
Transceiver
Figure 2-2. MFOTC Front Panel
Data
Tx
Tx
Rx
Rx
Tx
Rx
Fiber
Transceiver
Figure 2-3. Details of a MFOTC Fiber Optic Transceiver
2-4
Users Guide - Andrew 2400 EOCell™ Fiber Optic Distributed Antenna System
• MFOTC Rear Panel
The rear view of the MFOTC, figure 2-4 below, shows the Type N RF input & output connectors
as well as the AC power connection. The DB-9 connectors are for the optional remote
monitoring via a serial interface. The details of the remote alarms are discussed in section 5 of
this manual.
ALARM MODULE
RS-232
PORT 1
FUSE
3A 250V
pph6-.375
115/230 VAC
115/230 VAC
RECEIVE
TRANSMIT
ALARM MODULE
RS-232
PORT 2
Figure 2-4. MFOTC Rear Panel
• 2400 MHz EOCell ™ Remote Fiber Fed Amplifier Unit
(RFFAU)
The RFFAU is the EOCell™ component that is distributed within a building or tunnel to provide
the RF signal interface to the portable and mobile radios. The RFFAU interfaces to antennas
and/or leaky cable to transmit the downlink signal to the portable and mobile radios and to
receive the uplink signal from the portable and mobile radios. Typical distributed antenna
systems consist of multiple RFFAUs connected to the MFOTC. The RFFAUs are a NEMA 4X
enclosure generally mounted on a wall. Reference figure 2-5 for the RFFAU diagram.
2-5
Users Guide - Andrew 2400 EOCell™ Fiber Optic Distributed Antenna System
110-230 VAC
RF 4 RF 3
RF 2FORF 1RF 1
385700-5000-004
385700-5000-104
COMPUTER GENERATED - DO NOT REVISE MANUALLY
OUTLINE, REMOTE UNIT
84147
ART
2601 TELECOM PARKWAY
Richardson, Texas 75082-3521
Figure 2-5. RFFAU Enclosure Diagram
The RFFAU weighs ≤ 59 lbs and is 20 in. x 16 in. x 8 in. in size.
RFFAU features are listed below:
• The RFFAU provides high output power and sensitivity to cover large areas.
• The RFFAU is easy to install on a wall or a pole.
• Uses Type N female connectors for input/output interface to antennas or leaky cable.
• Uses Fiber Optic FC/APC Connectors for interfacing the fiber system
• RFFAU operates from a wide range of AC input: uses 110 to 230 VAC @ 50-60 Hz
Reference the RFFAU schematic in Figure 2-6 below for component layout.
2-6
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