Andrew INCELLSMR User Manual
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Copyright Andrew Corporation
Version 1.1
October 2000
Andrew InCell™ Fiber Optic Distributed Antenna System Users Guide
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, October 2000, Printed in USA, All rights reserved.
FCC Notice
This equipment complies with Part 90 of the FCC rules. Any changes or modifications not
expressly approved by the manufacturer could void the user’s authority to operate the
equipment.
Warning
In order to comply with FCC rules for rf exposure, the following must be observed:
1. The antenna for this device must have a gain of no more than 14.6 dBi.
2. The antenna must be installed such that a minimum separation distance of 20 cm. is
maintained between the antenna and any persons.
Trademarks
InCell™ is a trademark of Andrew Corporation. All other trademarks belong to their
respective owner.
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
2601 Telecom Parkway
Richardson, Texas 75082
Attention: Mr. Matt Melester
E-mail:matt.melester@andrew.com
Fax: (972) 952-0018
Voice: (972) 952-9745
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Table of Contents
Andrew Corporation.................................................................................................................1
Andrew In-Building Wireless Experience................................................................................1
InCell™ Fiber Optic Distributed Antenna System Description..............................................1
Central Distribution Unit (CDU)...........................................................................................1
CDU FRONT PANEL
.........................1
Remote Antenna Unit (RAU)................................................................................................2
CDU to RAU Interface Cables ..............................................................................................4
Composite Fiber Optic & Power Cables................................................................................4
Standard Duplex Fiber Optic Cables......................................................................................4
Indoor Antennas....................................................................................................................5
In-Building Implementations Using the Andrew InCell™ System.........................................7
Scalable System Architecture................................................................................................7
The Signal Distribution Unit............................................................................................8
The Interconnecting Cable...................................................................................................11
The Installation Parameters ...........................................................................................13
Sample Implementation.......................................................................................................16
InCell™ Specifications............................................................................................................17
Technical Performance........................................................................................................17
Interface Specifications.......................................................................................................18
Electrical Specifications......................................................................................................19
Environmental and Mechanical Specifications.....................................................................20
MTBF ...........................................................................................................................20
MTTR...........................................................................................................................20
Andrew InCell™ Fiber Optic Distributed Antenna System Users Guide
InCell™ Network Monitoring System ...................................................................................21
Pilot Tone Generation .........................................................................................................21
RAU Indicators...................................................................................................................21
CDU Front Panel Indicators................................................................................................21
Alarm Functions..................................................................................................................22
Remote Monitoring Functions.............................................................................................22
InCell™ Operation, Maintenance and Support ....................................................................24
Operation............................................................................................................................24
Regular Maintenance...........................................................................................................24
Fault Repair ........................................................................................................................24
Support...............................................................................................................................24
Spare Policy........................................................................................................................24
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Andrew InCell™ Fiber Optic Distributed Antenna System Users Guide
List of Tables
Table 1. InCell™ Performance Specification............................................................................17
Table 2. BTS Interface Specifications ......................................................................................18
Table 3. Antenna Interface Specifications ................................................................................19
Table 4. Electrical Specifications .............................................................................................19
Table 5. InCell™ Environmental and Mechanical Specification...............................................20
List of Figures
Figure 1. InCell™......................................................................................................................1
Figure 2. InCell™ Form Factors ................................................................................................1
Figure 3. Andrew Dual Band Patch Antenna..............................................................................5
Figure 4. Andrew Dual Band Omni Antenna...............................................................................5
Figure 5. Simplified InCell™ Block Diagram ............................................................................7
Figure 6. InCell™ Central Distribution Unit ..............................................................................1
Figure 8. Remote Antenna Unit..................................................................................................8
Figure 9. System expandability to 48 RAUs...............................................................................9
Figure 10. System Expandability to more than 48 RAUs..........................................................10
Figure 11. Cross Section of Andrew Composite Fiber/Copper Cable........................................11
Figure 12. Remote and Local Power Connections on the RAU.................................................12
Figure 13. Typical System Configuration Using Off-Air Interface............................................16
Figure 15. Remote Alarm Capability........................................................................................23
Figure 16. Daisy Chaining CDU’s for Remote Monitoring.......................................................23
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Andrew InCell™ Fiber Optic Distributed Antenna System Users Guide
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 Distributed Communications Systems (DCS) group 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.
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Andrew InCell™ Fiber Optic Distributed Antenna System Users Guide
InCell™ Fiber Optic Distributed Antenna System Description
The subsystem consists of one or more Central Distribution Units (CDU) feeding multiple
Remote Antenna Units (RAU).
Figure 1. InCell™
This unit can drive up to 6 RAU’s. Additional CDU’s can be driven using one or more of
our Signal Distribution Units (SDU). The required signal distribution is built into the backplane of the chassis minimizing the need for interconnecting cables. Our design is
intrinsically optimized for new technologies operating at higher bandwidths.
Unlike other competing products, this product is designed for multi-operator, multi-service
capabilities with higher output levels and lower system sensitivities. This equates to greater
coverage range per antenna unit and hence lower implementation costs. When complete,
this product will be available in both single-band units, i.e., US Cellular, GSM 900, US
PCS-1900, and DCS-1800, and dual band units in which both low and high band services
are supported within the same unit using the same fiber pair.
Figure 2. InCell™ Form Factors
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Andrew InCell™ Fiber Optic Distributed Antenna System Users Guide
CDU Side View
RAU Front
View
RAU Front
View
RAU Front
View
RAU Front
View
RAU Front
View
RAU Front
View
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Andrew InCell™ Fiber Optic Distributed Antenna System Users Guide
Central Distribution Unit (CDU)
The Central Distribution Unit (CDU) is the core module that can drive up to six Remote
Antenna Units (RAU. The CDU separates the down and uplink RF signals and converts
these to optics for transmission over a 2-core single-mode fiber cable to one of six RAU’s.
The CDU (shown at Figure 3) is housed in a standard 1U, 19-inch rack mount unit and
provides 6 sets of duplex optical fiber links to the remote antenna units.
Figure 3. InCell™ Central Distribution Unit
The figure below provides a detailed view of the CDU front panel, showing the six remote
antenna interface ports. Each of the six ports is identical and provides DC power for the
remote antenna as well as a downlink interface and an uplink interface with the remote
antenna unit.
CDU FRONT PANEL
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Andrew InCell™ Fiber Optic Distributed Antenna System Users Guide
The rear view of the CDU shows the RF input/output connector as well as the power
connection and the on/off switch. The RF connections are Type N.
CDU REAR PANEL
CDU Side View
Remote Antenna Unit (RAU)
The RAU converts the signal back to RF and provides a single duplex downlink and uplink
output port; and the dual band unit combines the two services to a single RF connector. The
third order intercept point is high (33dBm typical), and the output can go directly to a multiband antenna or be split to drive multiple antennas.
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