ADC UNS-IDEN-1, UNS 819RAU Users Manual

®

TM

InterReach Unison

Installation, Operation, and Reference Manual

PN 8700-10

620003-0 Rev. B

This manual is produced for use by LGC Wireless personnel, licens ees, and customers. The
information contained herein is the property of LGC Wireless. No part of this document
may be reproduced or transmitted in any form or by any means, electron i c or mechanical,
for any purpose, without the express written permission of LGC Wireless.

LGC Wireless reserves the right to make c hanges, without notice, to the specifications and
materials contained herein, and shall not be responsible for any damages caused by reliance
on the material as presented, including, but not limited to, typographical and listing errors.

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Please address your comments to LGC Wireless, Inc. corporate headquarters in San Jose,
California:

Address 2540 Junction Avenue

San Jose, California
95134-1902 USA

Attn: Marketing Dept.
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Copyright © 2001-2002 by LGC Wireless, Inc. Printed in USA. All rights reserved.

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InterReach Unison Installation, Operation, and Reference Manual PN 8700-10

620003-0 Rev. B

Limited Warranty

Seller warrants articles of its manufacture against defective materials or workmanship for a
period of one year from the date of shipment to Purchaser, except as provided in any warranty
applicable to Purchaser on or in the package containing the Goods (which warranty takes
precedence over the following warranty). The liability of Seller under the foregoing warranty
is limited, at Seller’s option, solely to repair or replacement with equivalent Goods, or an
appropriate adjustment not to exceed the sales price to Purchaser, provided that (a) Seller is
notified in writing by Purchaser, within the one year warranty period, promptly upon
discovery of defects, with a detailed description o f such defects, (b) Purchaser has obtained a
Return Materials Authorization (RMA) from Seller, which RMA Seller agrees to provide
Purchaser promptly upon request, (c) the defective Goods are returned to Seller,
transportation and other applicable charges prepaid by the Purchaser, and (d)Seller’s
examination of such Goods discloses to its reasonable satisfaction that defects were not
caused by negligence, misuse, improper installation, improper maintenance, accident or
unauthorized repair or alteration or any other cause outside the scope of Purchaser’s warranty
made hereunder. Notwithstanding the foregoing, Seller shall have the option to repair any
defective Goods at Purchaser’s facility. The original warranty period for any Goods that have
been repaired or replaced by seller will not thereby be extended. In addition, all sales will be
subject to standard terms and conditions on t he sales con tract.

PN 8700-10 InterReach Unison Installation, O peration, and Reference Manual

620003-0 Rev. B

InterReach Unison Installation, Operation, and Reference Manual PN 8700-10

620003-0 Rev. B

Table of Contents

SECTION 1 General Information . . . . . . . . . . . . . . . . . . . . . . 1-1

1.1 Purpose and Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2

1.2 Conventions in this Manual . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4

1.3 Acronyms in this Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5

1.4 Standards Conformance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7

1.5 Related Publications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7

SECTION 2

InterReach™ Unison System Description . . . . 2-1

2.1 System Hardware . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3

2.2 System OA&M Capabilities . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4

2.2.1 OA&M Software . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7

2.2.2 Using Alarm Contact Closures . . . . . . . . . . . . . . . . . . . . . . . . 2-9

2.3 System Connectivity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-10

2.4 System Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-11

2.5 System Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-12

2.5.1 Physical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-12

2.5.2 InterReach Unison Wavelength and Laser Power . . . . . . . . . 2-13

2.5.3 Environmental Specifications . . . . . . . . . . . . . . . . . . . . . . . . 2-13

2.5.4 Operating Frequencies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-13

2.5.5 RF End-to-End Performance . . . . . . . . . . . . . . . . . . . . . . . . . 2-14

SECTION 3 Unison Main Hub . . . . . . . . . . . . . . . . . . . . . . . . 3-1

3.1 Main Hub Front Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2

3.1.1 Optical Fiber Uplink/Downlink Ports . . . . . . . . . . . . . . . . . . . 3-3

3.1.2 Communications RS-232 Serial Connector . . . . . . . . . . . . . . 3-3

3.1.3 LED Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4

3.2 Main Hub Rear Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7

3.2.1 Main Hub Rear Panel Connectors . . . . . . . . . . . . . . . . . . . . . . 3-8

3.3 Faults and Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-9

3.4 Main Hub Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-10

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SECTION 4 Unison Expansion Hub . . . . . . . . . . . . . . . . . . . . 4-1

4.1 Expansion Hub Front Panel . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2

4.1.1 RJ-45 Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3

4.1.2 Optical Fiber Uplink/Downlink Connectors . . . . . . . . . . . . . . 4-3

4.1.3 LED Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3

4.2 Expansion Hub Rear Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6

4.3 Faults and Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-7

4.4 Expansion Hub Specifications . . . . . . . . . . . . . . . . . . . . . . . . 4-8

SECTION 5

SECTION 6

Unison Remote Access Unit . . . . . . . . . . . . . . . 5-1

5.1 Remote Access Unit Connectors . . . . . . . . . . . . . . . . . . . . . . . 5-3

5.1.1 SMA Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3

5.1.2 RJ-45 Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3

5.2 LED Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4

5.3 Faults and Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-5

5.4 Remote Access Unit Specifications . . . . . . . . . . . . . . . . . . . . 5-5

Designing a Unison Solution . . . . . . . . . . . . . . . 6-1

6.1 Maximum Output Power per Carrier at RAU . . . . . . . . . . . . . 6-3

6.2 Estimating RF Coverage . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-16

6.2.1 Path Loss Equation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-17

6.2.2 Coverage Distance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-18

6.2.3 Examples of Design Estimates . . . . . . . . . . . . . . . . . . . . . . . 6-23

6.3 System Gain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-27

6.3.1 System Gain (Loss) Relative to ScTP Cable Length . . . . . . . 6-27

6.4 Link Budget Analysis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-28

6.4.1 Elements of a Link Budget for Narrowband Standards . . . . . 6-29

6.4.2 Narrowband Link Budget Analysis for a Microcell

Application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-31

6.4.3 Elements of a Link Budget for CDMA Standards . . . . . . . . . 6-33

6.4.4 Spread Spectrum Link Budget Analysis for a Microcell

Application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-36

6.4.5 Considerations for Re-Radiation (over-the-air) Systems . . . . 6-40

6.5 Optical Power Budget . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-41

6.6 Connecting a Main Hub to a Base Station . . . . . . . . . . . . . . 6-42

6.6.1 Attenuation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-43

6.6.2 Uplink Attenuation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-44

6.7 Designing for a Neutral Host System . . . . . . . . . . . . . . . . . . 6-46

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SECTION 7 Installing Unison . . . . . . . . . . . . . . . . . . . . . . . . . 7-1

7.1 Installation Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1

7.1.1 Component Location Requirements . . . . . . . . . . . . . . . . . . . . 7-1

7.1.2 Cable and Connector Requirements . . . . . . . . . . . . . . . . . . . . 7-1

7.1.3 Multiple Operator System Recommendations . . . . . . . . . . . . 7-2

7.1.4 Distance Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-2

7.2 Safety Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-3

7.2.1 Installation Guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-3

7.2.2 General Safety Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-3

7.2.3 Fiber Port Safety Precautions . . . . . . . . . . . . . . . . . . . . . . . . . 7-4

7.3 Preparing for System Installation . . . . . . . . . . . . . . . . . . . . . . 7-5

7.3.1 Pre-Installation Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-5

7.3.2 Installation Checklist . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-6

7.3.3 Tools and Materials Required . . . . . . . . . . . . . . . . . . . . . . . . . 7-8

7.3.4 Optional Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-9

7.4 Unison Component Installation Procedures . . . . . . . . . . . . . 7-10

7.4.1 Installing a Main Hub . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-12

7.4.2 Installing Expansion Hubs . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-19

7.4.3 Installing RAUs and Passive Antennas . . . . . . . . . . . . . . . . . 7-27

7.4.4 Configuring the System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-30

7.5 Splicing Fiber Optic Cable . . . . . . . . . . . . . . . . . . . . . . . . . . 7-31

7.5.1 Fusion Splices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-31

7.6 Interfacing a Main Hub to a Base Station or a Roof-top

Antenna . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-33

7.6.1 Connecting Multiple Main Hubs . . . . . . . . . . . . . . . . . . . . . . 7-37

7.7 Connecting Contact Alarms to a Unison System . . . . . . . . . 7-41

7.7.1 Alarm Source . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-42

7.7.2 Alarm Sense . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-45

7.7.3 Alarm Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-46

7.8 Alarm Monitoring Connectivity Options . . . . . . . . . . . . . . . 7-48

7.8.1 Direct Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-48

7.8.2 Modem Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-49

7.8.3 232 Port Expander Connection . . . . . . . . . . . . . . . . . . . . . . . 7-50

7.8.4 POTS Line Sharing Switch Connection . . . . . . . . . . . . . . . . 7-51

7.8.5 Ethernet and ENET/232 Serial Hub Connection . . . . . . . . . . 7-52

SECTION 8 Replacing Unison Components in an

Operational System . . . . . . . . . . . . . . . . . . . . . . 8-1

8.1 Replacing an RAU . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1

8.2 Replacing an Expansion Hub . . . . . . . . . . . . . . . . . . . . . . . . . 8-3

8.3 Replacing a Main Hub . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-4

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SECTION 9 Maintenance, Troubleshooting, and

Technical Assistance . . . . . . . . . . . . . . . . . . . . . 9-1

9.1 Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-1

9.2 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-2

9.3 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-3

9.3.1 Troubleshooting using AdminManager . . . . . . . . . . . . . . . . . . 9-4

9.3.2 Troubleshooting using LEDs . . . . . . . . . . . . . . . . . . . . . . . . . 9-15

9.4 Troublshooting Cat-5/6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-20

9.5 Technical Assistance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-22

APPENDIX A

APPENDIX B

APPENDIX C Compliance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-1

APPENDIX D Release Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . D-1

APPENDIX E

Cables and Connectors . . . . . . . . . . . . . . . . . . .A-1

A.1 Cat-5/6 Cable (ScTP) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A-1

A.2 Fiber Optical Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A-3

A.3 Coaxial Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A-3

A.4 Standard Modem Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A-3

A.5 DB-9 to DB-9 Null Modem Cable . . . . . . . . . . . . . . . . . . . . .A-4

A.6 DB-25 to DB-9 Null Modem Cable . . . . . . . . . . . . . . . . . . . .A-5

InterReach Unison Property Sheet . . . . . . . . . . B-1

D.1 Unison Release 4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .D-1

D.2 Compatibility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .D-2

D.3 New Capabilites . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .D-3

Glossary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E-1

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List of Figures

Figure 2-1 Unison System Hardware . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3

Figure 2-2 OA&M Communications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4

Figure 2-3 Local System Monitoring and Reporting . . . . . . . . . . . . . . . . . . . . . . . 2-7

Figure 2-4 Remote System Monitoring and Reporting . . . . . . . . . . . . . . . . . . . . . . 2-8

Figure 2-5 Unison’s Double Star Architecture . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-10

Figure 3-1 Main Hub in a Unison System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

Figure 3-2 Main Hub Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

Figure 3-3 Main Hub Front Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2

Figure 3-4 Main Hub Rear Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7

Figure 4-1 Expansion Hub in a Unison System . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

Figure 4-2 Expansion Hub Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

Figure 4-3 Expansion Hub Front Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2

Figure 4-4 Expansion Hub Rear Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6

Figure 5-1 Remote Access Unit in a Unison System . . . . . . . . . . . . . . . . . . . . . . . . 5-1

Figure 5-2 Remote Access Unit Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2

Figure 6-1 Determining Path Loss between the Antenna and the Wireless Device 6-16

Figure 6-2 Connecting Main Hubs to a Simplex Base Station . . . . . . . . . . . . . . . 6-42

Figure 6-3 Main Hub to Duplex Base Station or Repeater Connections . . . . . . . . 6-43

Figure 7-1 Simplex Base Station to a Main Hub . . . . . . . . . . . . . . . . . . . . . . . . . . 7-33

Figure 7-2 Duplex Base Station to a Main Hub . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-34

Figure 7-3 Connecting a Main Hub to Multiple Base Stations . . . . . . . . . . . . . . . 7-35

Figure 7-4 Connecting Two Main Hubs to a Simplex Repeater or Base Station . 7-38
Figure 7-5 Connecting Two Main Hubs to a Duplex Repeater or Base Station . . 7-40

Figure 7-6 Connecting MetroReach to Unison . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-42

Figure 7-7 Using a BTS to Monitor Unison . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-43

Figure 7-8 Using a BTS and OpsConsole to Monitor Unison . . . . . . . . . . . . . . . . 7-44

Figure 7-9 Connecting LGCell to Unison . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-45

Figure 7-10 5-port Alarm Daisy-Chain Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-46

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Figure 7-11 Alarm Sense Adapter Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-47

Figure 7-12 OA&M Direct Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-48

Figure 7-13 OA&M Modem Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-49

Figure 7-14 OA&M Connection using a 232 Port Expander . . . . . . . . . . . . . . . . . . 7-50

Figure 7-15 OA&M Connection using a POTS Line Sharing Switch . . . . . . . . . . . 7-51

Figure 7-16 Cascading Line Sharing Switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-51

Figure 7-17 OA&M Connection using Ethernet and ENET/232 Serial Hub . . . . . . 7-52

Figure A-1 Wiring Map for Cat-5/6 Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A-2

Figure A-2 Standard Modem Cable Pinout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A-3

Figure A-3 DB-9 Female to DB-9 Female Null Modem Cable Diagram . . . . . . . .A-4

Figure A-4 DB-25 Male to DB-9 Female Null Modem Modem Cable Diagram . .A-5

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List of Tables

Table 2-1 AdminManager and OpsConsole Functional Differences . . . . . . . . . . 2-5

Table 2-2 AdminManager and OpsConsole Connectivity Differences . . . . . . . . . 2-6

Table 2-3 Cellular RF End-to-End Performance . . . . . . . . . . . . . . . . . . . . . . . . . 2-14

Table 2-4 iDEN RF End-to-End Performance . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-14

Table 2-5 GSM/EGSM RF End-to-End Performance . . . . . . . . . . . . . . . . . . . . . 2-15

Table 2-6 DCS RF End-to-End Performance . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-15

Table 2-7 PCS RF End-to-End Performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-16

Table 2-8 UMTS RF End-to-End Performance . . . . . . . . . . . . . . . . . . . . . . . . . . 2-16

Table 3-1 Main Hub Status LED States . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5

Table 3-2 Main Hub Port LED States . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6

Table 3-3 Main Hub Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-10

Table 4-1 Expansion Hub Unit Status and DL/UL Status LED States . . . . . . . . . 4-4

Table 4-2 Expansion Hub Port LED States . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5

Table 4-3 Expansion Hub Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-8

Table 5-1 Frequency Bands covered by Unison RAUs . . . . . . . . . . . . . . . . . . . . . 5-3

Table 5-2 Remote Access Unit LED States . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4

Table 5-3 Remote Access Unit Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-5

Table 6-1 800 MHz (AMPS) Power per Carrier . . . . . . . . . . . . . . . . . . . . . . . . . . 6-4

Table 6-2 800 MHz (TDMA) Power per Carrier . . . . . . . . . . . . . . . . . . . . . . . . . . 6-5

Table 6-3 800 MHz (CDMA) Power per Carrier . . . . . . . . . . . . . . . . . . . . . . . . . 6-6

Table 6-4 800 MHz (iDEN) Power per Carrier . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-6

Table 6-5 900 MHz (GSM or EGSM) Power per Carrier . . . . . . . . . . . . . . . . . . . 6-7

Table 6-6 900 MHz (EDGE) Power per Carrier . . . . . . . . . . . . . . . . . . . . . . . . . . 6-8

Table 6-7 1800 MHz (DCS) Power per Carrier . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-9

Table 6-8 1800 MHz (EDGE) Power per Carrier . . . . . . . . . . . . . . . . . . . . . . . . 6-10

Table 6-9 1800 MHz (CDMA Korea) Power per Carrier . . . . . . . . . . . . . . . . . . 6-10

Table 6-10 1900 MHz (TDMA) Power per Carrier . . . . . . . . . . . . . . . . . . . . . . . . 6-11

Table 6-11 1900 MHz (GSM) Power per Carrier . . . . . . . . . . . . . . . . . . . . . . . . . 6-12

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Table 6-12 1900 MHz (CDMA) Power per Carrier . . . . . . . . . . . . . . . . . . . . . . . .6-12

Table 6-13 1900 MHz (EDGE) Power per Carrier . . . . . . . . . . . . . . . . . . . . . . . .6-13

Table 6-14 2.1 GHz (UMTS) Power per Carrier . . . . . . . . . . . . . . . . . . . . . . . . . .6-13

Table 6-15 Paging/SMR Power per Carrier: Analog FM, CQPSK, C4FM . . . . . . 6-14

Table 6-16 Paging/SMR Power per Carrier: Mobitex, POCSAG/Reflex . . . . . . .6 -14

Table 6-17 Coaxial Cable Losses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-16

Table 6-18 Average Signal Loss of Common Building Materials . . . . . . . . . . . . .6-17

Table 6-19 Estimated Path Loss Slope for Different In-Building Environments . 6-18
Table 6-20 Frequency Bands and the Value of the first Term in Equation (3) . . . 6-19
T abl e 6-21 Approximate Radiated Distance from Antenna

for 800 MHz Cellular Applications . . . . . . . . . . . . . . . . . . . . . . . . . . .6-20

T abl e 6-22 Approximate Radiated Distance from Antenna

for 800 MHz iDEN Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-20

T abl e 6-23 Approximate Radiated Distance from Antenna

for 900 MHz GSM Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-20

T abl e 6-24 Approximate Radiated Distance from Antenna

for 900 MHz EGSM Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-21

T abl e 6-25 Approximate Radiated Distance from Antenna

for 1800 MHz DCS Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-21

T abl e 6-26 Approximate Radiated Distance from Antenna

for 1800 MHz CDMA (Korea) Applications . . . . . . . . . . . . . . . . . . .6-21

T abl e 6-27 Approximate Radiated Distance from Antenna

for 1900 MHz PCS Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-22

T abl e 6-28 Approximate Radiated Distance from Antenna

for 2.1 GHz UMTS Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-22

Table 6-29 System Gain (Loss) Relative to ScTP Cable Length . . . . . . . . . . . . . .6-27

Table 6-30 Link Budget Considerations for Narrowband Systems . . . . . . . . . . .6-29

Table 6-31 Distribution of Power within a CDMA Signal . . . . . . . . . . . . . . . . . .6-33

Table 6-32 Additional Link Budget Considerations for CDMA . . . . . . . . . . . . .6-34

Table 6-33 Unison Capacity: Equal Coverage Areas . . . . . . . . . . . . . . . . . . . . . .6-48

Table 7-1 Unison Distance Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-2

Table 7-2 Installation Checklist . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-6

Table 7-3 Tools and Materials Required for Component Installation . . . . . . . . . .7-8

Table 7-4 Optional Accessories for Component Installation . . . . . . . . . . . . . . . . .7-9

Table 7-5 Troubleshooting Main Hub LEDs During Installation . . . . . . . . . . . .7-17

Table 7-6 Troubleshooting Expansion Hub LEDs During Installation . . . . . . . 7-25

Table 7-7 Troubleshooting RAU LEDs During Installation . . . . . . . . . . . . . . . .7-29

Table 9-1 Faults Reported by the Main Hub . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-4

Table 9-2 Faults Reported by the Expansion Hub . . . . . . . . . . . . . . . . . . . . . . . .9-7

Table 9-3 Remote Access Unit Faults . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-10

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Table 9-4 Main Hub Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-11

Table 9-5 Expansion Hub Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-11

Table 9-6 Remote Access Unit Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-11

Table 9-7 Main Hub Status Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-12

Table 9-8 Expansion Hub Status Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-13

Table 9-9 Remote Access Unit Status Messages . . . . . . . . . . . . . . . . . . . . . . . . . 9-14

Table 9-10 Troubleshooting Main Hub Port LEDs During Normal Operation . . 9-16
Table 9-11 Troubleshooting Main Hub Status LEDs During Normal Operation . 9-17
Table 9-12 Troubleshooting Expansion Hub Port LEDs During Normal

Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-18

Table 9-13 Troubleshooting Expansion Hub Status LEDs During Normal

Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-19

Table 9-14 Summary of Cat-5/6 Cable Wiring Problems . . . . . . . . . . . . . . . . . . 9-20

Table A-1 Cat-5/6 Twisted Pair Assignment . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A-1

Table A-2 DB-9 Female to DB-9 Female Null Modem Cable Pinout . . . . . . . . . . A-4

Table A-3 DB-25 Male to DB-9 Female Null Modem Cable Pinout . . . . . . . . . . .A-5

Table D-1 Unison Release 4 Line-up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .D-1

Table D-2 Hardware/Firmware/Software Release Compatibility . . . . . . . . . . . . .D-2

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x InterReach Unison Installation, Operation, and Reference Manual PN8700-10

620003-0 Rev. B

SECTION 1 General Information

This section contains the following subsections:

• Section 1.1 Purpose and Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2

• Section 1.2 Conventions in this Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4

• Section 1.3 Acronyms in this Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5

• Section 1.4 Standards Conformance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7

• Section 1.5 Related Publications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7

PN 8700-10 InterReach Unison Installation, Operation, and Reference Manual 1-1

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1.1 Purpose and Scope

This document describes the InterReach

TM

Unison system components.

• Section 2 InterReach™ Unison System Description
An overview of the Unison hardware and OA&M capabilities is provided in this

section. This section also contains system s pecifications an d R F end- to-end per for­mance tables.

• Section 3 Unis on Main Hub
The Main Hub is illustrated and described in this section. Connector and LED

descriptions, communication cable (serial and null modem) pin outs, and un it spec­ifications are included.

• Section 4 Unison Expansio n Hub
The Expansion Hub is illustrated and described in this section. Connector and LED

descriptions, and unit specifications are included.

• Section 5 Unison Remote Access Unit
The Remote Access Unit is illustrated and described in this section. Connector and

LED descriptions, and unit specifications are included.

• Section 6 Designing a Unis on So lution
This section provides tools to aid you in designing your Unison system, including

tables of the maximum output power per carrier at the RAU and formulas and
tables for calculating path loss, coverage distance, and link budget.

• Section 7 Installing Un ison
Installation procedures, requirements, safety precautions, and checklists are pro-

vided in this section. The installation procedures include guidelines for trouble­shooting using the LEDs as you install the units.

• Section 8 Replacing Un iso n Compo nents in an Operatio nal S ystem
This section provides installation procedures and considerations when you are

replacing a Unison component in an operating system.

• Section 9 Maintenance, Troubleshooting, and Technical Assistance
Contact information and troubleshooting tables are provided in this section.

• Appendix A Cables and Connectors
Connector and cable descriptions and requirements are provided in this section.

Additionally, cable pin outs and diagrams are given.

1-2 InterReach Unison Installation, Operation, and Reference Manual PN 8700-10

620003-0 Rev. B

• Appendix B InterReach Unison Property Sheet
This section contains a form that you can use during installation to record serial

numbers, gain settings, system band, RAU attenuation, and unit installation loca­tion. This information is required for the final As-Built documentation.

• Appendix C Compliance
Safety and Radio/EMC approvals are listed in this section.

• Appendix D Release Notes
A hardware/firmware/software compatibility table is provided in this section.

• Appendix E Glossary
The Glossary provides definitions of commonly-used RF and wireless networking

terms.

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620003-0 Rev. B

1.2 Conventions in this Manual

The following table lists the type style conventions used in this manual.

Convention Description

bold Used for emphasis

BOLD CAPS

MALL CAPS AdminManage r window buttons

S

Measurements are listed first in metric units, followed by U.S. Customary System of
units in parentheses. For example:

0° to 45°C (32° to 113°F)

The following symbols are used to highlight certain information as described.

NOTE: This format is used to emphasize text with special significance or
importance, and to provide supplemental information.

CAUTION: This format is used when a given action or omitted
action can cause or contribute to a hazardous condition. Damage to
the equipment can occur.

Labels on equipment

WARNING: T his fo rma t i s u sed wh en a given action or omit ted act ion
can result in catastrophic damage to the equipment or cause injury to
the user.

Procedure

This form at is used to highlight a procedure.

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1.3 Acronyms in this Manual

Acronym Definition

AGC automatic gain control
ALC automatic level control
AMPS Advanced Mobile Phone Service
BTS base transceiv er station
Cat-5/6 Category 5 or Category 6 (twisted pair cable)
CDMA code division multiple access
CDPD cellular digital packet data
DAS distributed antenna system
dB decibel
dBm decibels relative to 1 milliwatt
DC direct current
DCS Digital Communications System
DL downlink
EDGE Enhanced Data Rates for Global Evolution
EGSM Extended Global Standard for Mobile Communications
EH Expansion Hub
GHz gigahertz
GPRS General Packet Radio Service
GSM Groupe Speciale Mobile (now translated in English as Global Standard

for Mobile Communications)
Hz hertz
IF intermediate frequency
iDEN Integrated Digit a l Enhanced Network (Motorola variant of TDMA

wireless)
LAN local area network
LO local oscillator
mA milliamps
MBS microcellular base station
MH Main Hub
MHz megahertz
MMF multi-mode fiber
MTBF mean time between failures
NF noise figure
nm nanometer

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620003-0 Rev. B

Acronym Definition

OA&M operation, administration, and main te na n ce
PCS Personal Communication Services
PLL phase-locked loop
PLS path loss slope
RAU Remote Access Unit
RF radio frequency
RSSI received signal strength indicator
SC/APC fiber optic connector complying wi th NTT SC standard, angle-polished
SMA sub-miniature A connector (coaxial cable connector type)
SMF single-mode fiber
ST straight tip (fiber optic cable connector type)
ScTP screened twisted pair
TDMA time division multiple access
UL uplink; Underwriters Laboratories
uW microwatts
UMTS Universal Mobile Telecommunications System
UPS uninterruptable power supply
Wwatt
WCDMA wideband code division multiple access

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1.4 Standards Conformance

• Utilizes the TIA/EIA 568-A Ethernet cabling standards for ease of installation.

• See Appendix C for compliance information.

1.5 Related Publications

• AdminManager User Manual, LGC Wireless part number 8810-10

• OpsConsole User Manual; LGC Wireless part number 8800-10

• MetroReach Focus Configuration, Installation, and Reference Manual; LGC
Wireless part number 8500-10

• LGCell Version 4.0 Installation, Operation, and Reference Manual; LGC Wireless
part number 8100-50

• LGC Wireless Accessories Catalog; LGC Wireless part number 8600-10

• Neutral Host System Planning Guide; LGC Wireless part number 9000-10

PN 8700-10 Help Hot Line (U.S. only): 1-800-530-9960 1-7

620003-0 Rev. B

1-8 InterReach Unison Installation, Operation, and Reference Manual PN 8700-10

620003-0 Rev. B

SECTION 2 InterReach™ Unison System

Description

InterReach™ Unison is an intelligent fiber optic/Cat-5/6 wireless networking system
that is designed to handle both wireless voice and data communications and provide
high-quality, ubiquitous, seamless access to the wireless network in any public or pri­vate facility, including:

• Campus environments

•Airports

• Office buildings

• Shopping malls

• Hospitals

• Subways

• Public facilities (convention centers, sports venues, etc.)

Unlike other wireless distribution alternatives, Unison is an intelligent active system,
using microprocessors to enable key capabilities such as software-selectable band set­tings, automatic gain control, ability to incrementally adjust downlink/uplink gain,
end-to-end alarming of all components and the associated cable infrastructure, and a
host of additional capabilities.

The Unison system supports major wireless standards and air interface protocols in
use around the world, including:

• Frequencies: 800 MHz, 900 MHz, 1800 MHz, 1900 MHz, 2100 MHz

• Protocols: AMPS, TDMA, CDMA, GSM, iDEN, CDPD, EDGE, GPRS,
WCDMA, CDMA2000, Paging

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Key System Features

• Superior RF performance, particularly in the areas of IP3 and noise figure.

• High downlink composite power and low uplink noise figure enables support of
a large number of channels and larger coverage footprint per antenna.

• Software configurable Main and Expansion Hubs. Thus, the frequency band can
be configured in the field.

• Either single-mode or multi-mode fiber can be used, supporting flexible cabling
alternatives (in addition to standard Cat-5 or Cat-6 [Cat-5/6] screened twisted pair
[ScTP]). Cabling type can be selected to meet the res ident cabling infrastructur e of
the facility and unique building topologies.

• Extended system “reach.” Using single-mode fiber, fiber runs can be as long as
6 k ilometers (creating a total system “wingspan” of 12 kilometers). Alternately,
with multi-mode fiber, fiber runs can be as long as 1.5 kilometers. The Cat-5/6
ScTP cable run can be up to 100 meters recom mended max imum ( 150 meters with
RF performance degradation).

• Flexible RF configuration capabilities, including:

• System gain:
– Ability to manually set gain in 1 dB steps, from 0 to 15 dB, on both down-

link and uplink.

• RAU:
– RAU uplink and downlink gain can be independently attenuated 10 dB.
– Uplink level control protects the system from input overload and can be

optimized for either a single operator or multiple operators/protocols.

– VSWR check on RAU reports if there is a disconnected antenna (all RAUs

except UMTS).

• Firmware Updates are downloaded (either locally or remotely) to operating sys-

tems when any modifications are made to the product, including the addition of
new software capabilities/services.

• Extensive OA&M capabilities, including fault isolation to the field replaceable

unit, automatic reporting of all fault and warning conditions, and user-friendly
graphical-user interface OA&M software packages.

2-2 InterReach Unison Installation, Operation, and Reference Manual PN 8700-10

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2.1 System Hardware

The InterReach Unison system consists of three modular components:

• 19" rack-mountable Main Hub (connects to up to 4 Expansion Hubs)

• Converts RF signals to optical on the downlink; optical to RF on the uplink

• Microprocessor controlled (for alarms, monitoring, and control)

• Software configurable band

• Simplex interface to RF source

• System master – periodically polls all downstream units (Expansion
Hubs/RAUs) for system status, and automatically reports any fault or warning
conditions

• 19" rack-mountable Expansion Hub (connects to up to 8 Remote Access Units)

• Converts optical signals to electrical on the downlink; electrical to optical on
the uplink

• Microprocessor controlled (for alarms, monitoring, and control)

• Software configurable band (based on command from Main Hub)

• Supplies DC power to RAU

• Remote Access Unit (RAU)

• Converts electrical signals to RF on the downlink; RF to electrical on the
uplink

• Microprocessor controlled (for alarms, monitoring, and control)

• Protocol/band specific units

The minimum configuration of a Unison system is one Main Hub, one Expansion
Hub, and one RAU (1-1-1). The maximum configuration of a system is one Main
Hub, four Expansion Hubs, and 32 RAUs (1-4-32). Multiple systems can be com­bined to provide larger configurations.

Figure 2-1 Uni son System Hardware

PN 8700-10 Help Hot Line (U.S. only): 1-800-530-9960 2-3

620003-0 Rev. B

2.2 System OA&M Capabilities

The InterReach Unison is microprocessor controlled and contains firmware which
enables much of the OA&M functionality.

Complete alarming, down to the field replaceable unit (i.e., Main Hub, Expansion
Hub, Remote Access Unit) and the cabling infrastructure, is available. All events
occurring in a system, defined as a Main Hub and all of its associated Expansion
Hubs and Remote Access Units, are automatically reported to the Main Hub. The
Main Hub monitors system status and communicates that status using the following
methods:

• Normally closed (NC) alarm contact closures can be tied to standard NC alarm
monitoring systems or directly to a base station for alarm monitoring.

• The Main Hub’s front panel serial port connects directly to a PC (for local access)
or to a modem (for remote access).

Figure 2-2 OA&M Communications

Use AdminManager to configure
or monitor a local Unison system.
Remotely, AdminManager can only
check system status, it cannot
receive modem calls.

Use OpsConsole to monitor
and receive communications from
remote or local Unison systems.

PC/Laptop
running
AdminManager
or OpsConsole

RS-232 Ethernet

RS-232

SC/APC

Fiber

SC/APC

Expansion Hub

RJ-45

Cat-5/6

RJ-45

Remote Access Unit

RS-232

Main Hub

TCP/IP

Modem

ENET/232

Converter

RS-232

Main Hub

Main Hub

PSTN

Modem

Main Hub

2-4 InterReach Unison Installation, Operation, and Reference Manual PN 8700-10

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LGC Wireless offers two OA&M packages AdminManager and OpsConsole.

• The AdminManager software is provided with Unison. It runs on a PC/laptop and
communicates with one Main Hub, and its downstream units, at a time.

• Connected directly to the Main Hub’s front panel RS-232 connector, you can
access the Installation Wizard which lets you configure a newly installed sys­tem, or you can access the Configuration & Maintenance panel which lets you
query system status, configure a newly added or swapped unit, or change sys­tem parameters.

• Connected remotely using a modem, AdminManager initiates comm unications
with the Main Hub. You can access a read-only Configuration & Maintenance
panel which lets you query system status to help you determine if an on-site
visit is required.

Refer to the AdminManager User Manual (PN 8810-10) for information about
installing and using the AdminManager software.

• Alternately, OpsConsole OA&M software is available separately. OpsConsole lets
you manage, monitor, and maintain multiple sites and systems from a centralized
remote location. This software is described in the OpsConsole User Guide
(PN 8800-10).

The following table lists the functional differences between AdminManager and
OpsConsole.

Table 2-1 AdminManager and OpsConsole Functional Differences

Feature AdminManager OpsConsole

Installation Wizard Yes No
Local System Configuration Yes Yes
Remote System Configuration No Yes
Local Firmware Updating Yes Yes
Save unit infor mation in a database No Yes
Network view of installed systems Yes Yes
Send dispatch message No Yes
Monitor multiple units No Yes
Scheduled poll ing No Yes
Window s- b ase d GU I applic a tio n Yes Yes
Runs on Windows 98 SE Yes No
Runs on Windows 2000 Yes Yes
Installation and configuration tool Yes No
Operation, Admini stration, and Management tool No Yes

PN 8700-10 Help Hot Line (U.S. only): 1-800-530-9960 2-5

620003-0 Rev. B

Connectivity differences between AdminManager and OpsConsole are listed in the
following table.

Table 2-2 AdminManager and OpsConsole Connectivity Differences

Connectivity AdminManager OpsConsole

Direct RS-232 Yes (COM1 through

COM16)

RS-232 Expansion Board Yes, if the expansion po rt

is in the range of COM1

through COM16
Modem (including RF modem) Yes (read only) Yes
Ethernet/232 serial hub Yes, if the remote COM

port is in the range of

COM1 through C O M16

Line Sharing Switch after POTS Yes (read only) Yes

Yes

Yes

Yes

2-6 InterReach Unison Installation, Operation, and Reference Manual PN 8700-10

620003-0 Rev. B

PC/Laptop

running

AdminManager

2.2.1 OA&M Software

2.2.1.1 Configuring, Maintaining, and Monitoring Unison Locally

Each Main Hub, Expansion Hub, and RAU in the system constantly monitors itself
and its downstream units for internal fault and warning conditions. The results of this
monitoring are stored in memory and compared against new results.

The Expansion Hubs monitor their RAUs and store their status in memory . The Main
Hub monitors its Expansion Hubs and s tores their status and the status of the RAUs in
its memory. When a unit detects a change in status, a fault or warning is reported.
Faults are indicated locally by red status LEDs, and both faults and warnings are
reported to the Main Hub and displayed on a PC/laptop, via the Main Hub’s serial
port, that is running the AdminManager software. Passive antennas that are connected
to the RAUs are not monitored automatically. Perform the System Test in order to
retrieve status information about antennas.

Using AdminManager locally, you can install a new system or new components,
change system parameters, and query system status. The following figure illustrates
how the system reports its status to AdminManager.

Figure 2-3 Local System Monitoring and Reporting

The Main Hub checks its own status and queries each
Expansion Hub for its status, which includes RAU status.

Main

Hub

The Expansion Hub queries its own status
and polls each RAU for its status.

Use the Admin­Manager to query
units for their status
or to get current
fault or warning
conditions.

PN 8700-10 Help Hot Line (U.S. only): 1-800-530-9960 2-7

620003-0 Rev. B

The Main Hub queries
status of each Expansion Hub
and each RAU and compares
it to previously stored status.

• If a fault is detected, LEDs
on the front panel turn red.

• If a fault or warning condi­tion is detected in any unit,
the Main Hub initiates a call
to AdminManager.

Expansion

Hub

The Expansion Hub queries status
of each RAU and compares it to
previously stored status.

• If a fault is detected, LEDs on
the front panel turn red.

• If a fault or warning condition is
detected in the Expansion Hub
or an RAU, the information is
stored in the Expansion Hub’s
memory until the Main Hub que­ries its status.

RAU

RAU

Each RAU passes its status to
the Expansion Hub.

• If a fault is detected, the
ALARM LED is red. If no fault
is detected, the LED is green.

• If a fault or warning condition
is detected, the information is
passed to the Expansion
Hub.

2.2.1.2 Monitoring and Maintaining Unison Remotely

• Using AdminManager Remotely

You can use AdminManager to query Unison status via a read-only Configuration
& Maintenance panel. You cannot change system parameters or configure system
components remotely with AdminManager. (Refer to Figure 2-2 on page 2-4.)

• Using OpsConsole Remotely

When monitoring the system remotely, any change of state within the system
causes the Main Hub to initiate an automatic call-out and report the system status
to the OpsConsole. The Main Hub calls out three times, each with a 45 second
interval. If the call is not acknowledged in these three tries, the Main Hub waits 15
minutes and continues the above sequence until the call is acknowledged.

Refer to the OpsConsole User Manua l (PN 8800-10) for more information about
using OpsConsole for remote system monitoring.

Figure 2-4 illustrates how the system reports its status to AdminManager and the
OpsConsole.

Figure 2-4 Remote System Monitoring and Reporting

The Main Hub checks its own status and queries each
Expansion Hub for its status, which includes RAU status.

PSTN

Modem

PC

running

OpsConsole

Use OpsConsole to com­municate with one or more
remotely or locally installed
systems.

If a fault or warning condi­tion is reported, the
OpsConsole graphical user
interface indicates the
problem. OpsConsole can
also send an e-mail and/or
page notification to desig­nated recipients.

Modem

The Main Hub queries
status of each Expansion
Hub and each RAU and
compares it to previously
stored status.

• If a fault is detected,
LEDs on the front panel
turn red.

• If a fault or warning con­dition is detected in any
unit, the Main Hub ini­tiates a call to OpsCon-
sole.

Main

Hub

The Expansion Hub queries its own status
and polls each RAU for its status.

Expansion

Hub

The Expansion Hub queries
status of each RAU and com­pares it to previously stored
status.

• If a fault is detected, LEDs on
the front panel turn red.

• If a fault or warning condition
is detected in the Expansion
Hub or an RAU, the informa­tion is stored in the Expan­sion Hub’s memory until the
Main Hub queries its status.

RAU

RAU

Each RAU passes its status to
the Expansion Hub.

• If a fault is detected, the
ALARM LED lights red. If no
fault is detected, the LED is
green.

• If a fault or warning condition
is detected, the information is
passed to the Expansion
Hub.

2-8 InterReach Unison Installation, Operation, and Reference Manual PN 8700-10

620003-0 Rev. B