AL PDH

User manual

Volume 1/1

MN.00142.E – 001

PDH radio systems

Compact version

AL

The information contained in this handbook is subject to change without notice.

Property of Siae Microelettronica S.p.A. All rights reserved according to the law and according to the international regula-tions. No part of this document may be reproduced or transmitted in any form or by any means, electronic or mechanical,without written permission from Siae Microelettronica S.p.A.

Unless otherwise specified, reference to a Company, name, data and address produced on the screen displayed is purelyindicative aiming at illustrating the use of the product.

Microsoft, MS–DOS, Windows, Windows NT and Windows 95 are trademarks of Microsoft Corporation.

Hewlett Packard, HP, HP OpenView Windows, Vectra and HP–UX are Hewlett Packard Company registered trademarks.

OSF Motif is an Open Software Foundation registered trademark.

UNIX is a Unix Systems Laboratories registered trademark.

INGRES is a Computer Associates registered trademark.

Other products cited here in are constructor registered trademarks.

Via Michelangelo Buonarroti, 21 – 20093 Cologno Monzese, Milano – Italy

Tel. (+39) 02 27325.1 – Fax (+39) 02 25301505 – e–mail [email protected]

AL (Compact version) – MN.00142.E – 001 I

ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ

Contents

Section 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . User guide 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1. DECLARATION OF CONFORMITY 3. . . . . . . . . . . . . . . . . . . . . . . . . .

2. FIRST AID FOR ELECTRICAL SHOCK AND SAFETY RULES 5. .

2.1 FIRST AID FOR ELECTRICAL SHOCK 5. . . . . . . . . . . . . . . . . . . . . . 2.1.1 Artificial respiration 5. . . . . . . . . . . . . . . . . . . . . . . . . . . 2.1.2 Treatment of burns 5. . . . . . . . . . . . . . . . . . . . . . . . . . .

2.2 SAFETY RULES 7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3. PURPOSE AND STRUCTURE OF THE MANUAL 9. . . . . . . . . . . . .

3.1 PURPOSE OF THE MANUAL 9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.2 AUDIENCE BASIC KNOWLEDGE 9. . . . . . . . . . . . . . . . . . . . . . . . . . .

3.3 STRUCTURE OF THE MANUAL 10. . . . . . . . . . . . . . . . . . . . . . . . . . . .

Section 13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Descriptions and specification 13. . . . . . . . . . . . . . . . . . . . . . . . . .

4. ABBREVIATION LIST 15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4.1 LIST OF ABBREVIATIONS 15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Contents

AL (Compact version) – MN.00142.E – 001II

5. SYSTEM PRESENTATION 17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5.1 RADIO SYSTEM OVERVIEW 17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.1.1 General 17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5.2 COMPLIANCE WITH INTERNATIONAL STANDARDS 17. . . . . . . . .

5.3 APPLICATIONS 18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5.4 SYSTEM ARCHITECTURE 18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.4.1 IDU 18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.4.2 ODU 19. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5.5 MANAGEMENT SYSTEMS 19. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.5.1 Management ports 19. . . . . . . . . . . . . . . . . . . . . . . . . . . 5.5.2 Protocols 19. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

6. EQUIPMENT TECHNICAL SPECIFICATIONS 23. . . . . . . . . . . . . . . . .

6.1 TECHNICAL SPECIFICATION 23. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

7. CHARACTERISTICS OF THE INDOOR UNIT 33. . . . . . . . . . . . . . . . .

7.1 GENERAL 33. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

7.2 TRIBUTARY INTERFACE 33. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7.2.1 2 Mbit/s interface 33. . . . . . . . . . . . . . . . . . . . . . . . . . . . .

7.3 SERVICE CHANNEL INTERFACE 34. . . . . . . . . . . . . . . . . . . . . . . . . . . 7.3.1 V.28 low speed synchronous/asynchronous data 34. 7.3.2 Alarm interface 34. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7.3.3 64 kbit/s contra–directional interface V.11 (optional) 357.3.4 Network Management Interface 35. . . . . . . . . . . . . . . .

7.4 MODULATOR/DEMODULATOR 36. . . . . . . . . . . . . . . . . . . . . . . . . . . . .

7.5 CABLE INTERFACE 36. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

7.6 AVAILABLE LOOPS 37. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

8. DESCRIPTION OF THE INDOOR UNIT – PDH INTERFACES 39. . .

8.1 1+0/1+1 IDU VERSIONS 39. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8.1.1 Line interface 39. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8.1.2 Radio interface 41. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8.1.3 Equipment controller 42. . . . . . . . . . . . . . . . . . . . . . . . . .

8.2 IDU LOOPS 43. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Inhaltsverzeichnis

AL (Compact version) – MN.00142.E – 001 III

8.2.1 Tributary loop 44. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8.2.2 Baseband unit loop 44. . . . . . . . . . . . . . . . . . . . . . . . . . . 8.2.3 IDU loop 44. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

9. CHARACTERISTICS OF THE OUTDOOR UNIT 55. . . . . . . . . . . . . . .

9.1 GENERAL 55. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

9.2 TECHNICAL SPECIFICATION 55. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

10. DESCRIPTION OF THE OUTDOOR UNIT 59. . . . . . . . . . . . . . . . . . . .

10.1 GENERAL 59. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

10.2 TRANSMIT SECTION 59. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

10.3 RECEIVE SECTION 60. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

10.4 CABLE INTERFACE 61. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

10.5 ATPC OPERATION 61. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

10.6 1+1 Tx SYSTEM 62. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

10.7 POWER SUPPLY 63. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Section 69. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Installation 69. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

11. INSTALLATION AND PROCEDURESFOR ENSURING ELECTROMAGNETIC COMPATIBILITY 71. . . . . . . . . . . . . . . . . . . . . .

11.1 GENERAL 71. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

11.2 MECHANICAL INSTALLATION 71. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11.2.1 IDU installation 71. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

11.3 ELECTRICAL WIRING 72. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

11.4 GROUNDING CONNECTION 73. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

12. USER CONNECTIONS 75. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

12.1 CONNECTOR USE FOR 1+0/1+1 STANDARD VERSION 75. . . . . .

12.2 STANDARD VERSION CONNECTORS 76. . . . . . . . . . . . . . . . . . . . . .

Contents

AL (Compact version) – MN.00142.E – 001IV

13. INSTALLATION ONTO THE POLE OF THE ODU WITH SEPARATED ANTENNA 79. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

13.1 INSTALLATION KIT 79. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

13.2 REQUIRED TOOLS FOR MOUNTING (NOT SUPPLIED) 80. . . . . .

13.3 INSTALLATION PROCEDURE 80. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

13.4 GROUNDING 82. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

14. INSTALLATION ONTO THE WALL OF THE ODU WITH SEPARATED ANTENNA 93. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .




14.4 GROUNDING 96. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

15. INSTALLATION ONTO THE POLE OF THE ODU WITH INTEGRATED ANTENNA (KIT V52191, V52192) 105. . . . . . . . . . . . . .

15.1 FOREWORD 105. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .



15.4 INSTALLATION PROCEDURE 106. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15.4.1 Installation onto the pole of the support system and

the antenna 107. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15.4.2 Installation of ODU 107. . . . . . . . . . . . . . . . . . . . . . . . . . . 15.4.3 ODU installation 108. . . . . . . . . . . . . . . . . . . . . . . . . . . . .

15.5 ANTENNA AIMING 109. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

15.6 GROUNDING 109. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

16. INSTALLATION ONTO THE POLE OF THE ODU WITH INTEGRATED ANTENNA (KIT V32307, V32308) 127. . . . . . . . . . . . . .

16.1 FOREWORD 127. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .




Inhaltsverzeichnis

AL (Compact version) – MN.00142.E – 001 V

16.5 1+0 MOUNTING PROCEDURES 129. . . . . . . . . . . . . . . . . . . . . . . . . . . . 16.5.1 Setting antenna polarization 129. . . . . . . . . . . . . . . . . . . 16.5.2 Installation of the centring ring on the antenna 129. . . 16.5.3 Installation of 1+0 ODU support 129. . . . . . . . . . . . . . . . 16.5.4 Installation onto the pole of the assembled structure 12916.5.5 Installation of ODU (on 1+0 support) 130. . . . . . . . . . . . 16.5.6 Antenna aiming 130. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16.5.7 ODU grounding 130. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

16.6 1+1 MOUNTING PROCEDURES 130. . . . . . . . . . . . . . . . . . . . . . . . . . . . 16.6.1 Installation of Hybrid 131. . . . . . . . . . . . . . . . . . . . . . . . . . 16.6.2 Installation of ODUs (on hybrid for 1+1 version) 131. .

Section 143. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Line–up 143. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

17. LINE–UP OF THE RADIO HOP 145. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

17.1 LINE–UP OF THE RADIO HOP 145. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17.1.1 Antenna alignment and received field measurement 14517.1.2 Network element configuration 146. . . . . . . . . . . . . . . . . 17.1.3 Radio checks 147. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Section 149. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Maintenance 149. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

18. PERIODICAL CHECKS 151. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

18.1 GENERAL 151. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

18.2 CHECKS TO BE CARRIED OUT 151. . . . . . . . . . . . . . . . . . . . . . . . . . . .

19. TROUBLESHOOTING 153. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

19.1 GENERAL 153. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

19.2 TROUBLESHOOTING PROCEDURE 153. . . . . . . . . . . . . . . . . . . . . . . . 19.2.1 Loop facilities 154. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19.2.2 Alarm messages processing 154. . . . . . . . . . . . . . . . . . .

Contents

AL (Compact version) – MN.00142.E – 001VI

20. EQUIPMENT CONFIGURATION UPLOAD/SAVE/DOWNLOAD.PARAMETER MODIFICATION AND CREATION OF VIRTUALCONFIGURATIONS. 157. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

20.1 SCOPE 157. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

20.2 PROCEDURE 157. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20.2.1 General equipment configuration 158. . . . . . . . . . . . . . . 20.2.2 Addresses and routing table 159. . . . . . . . . . . . . . . . . . . 20.2.3 Remote Element Table 160. . . . . . . . . . . . . . . . . . . . . . . .

21. BACK UP FULL EQUIPMENT CONFIGURATION WITHOUTPOSSIBILITY OF MODIFYING THE PARAMETERS 163. . . . . . . . . . .

21.1 SCOPE 163. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

21.2 CONFIGURATION UPLOAD 163. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

21.3 CONFIGURATION DOWNLOAD 164. . . . . . . . . . . . . . . . . . . . . . . . . . . .

Section 165. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Programming and supervision 165. . . . . . . . . . . . . . . . . . . . . . . . . .

22. PROGRAMMING AND SUPERVISION 167. . . . . . . . . . . . . . . . . . . . . . .

22.1 GENERAL 167. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Section 169. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Composition 169. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

23. COMPOSITION OF THE INDOOR UNIT 171. . . . . . . . . . . . . . . . . . . . . .

23.1 GENERAL 171. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

23.2 IDU PART NUMBER 171. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

24. COMPOSITION OF OUTDOOR UNIT 173. . . . . . . . . . . . . . . . . . . . . . . .

24.1 GENERAL 173. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

AL (Compact version) – MN.00142.E – 001 1

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1Section

User guide

1. TITOLO DEL CAPITOLOCM.89012.I

AL (Compact version) – MN.00142.E – 0012


1. DECLARATION OF CONFORMITY

SIAE Microelettronica S.p.A. declares that the products:

• Digital radio relay system AL7










comply with the essential requirements of article 3 of the R&TTE Directive (1999/05/EC) andtherefore is marked CE.

The following standards apply:

• EN 60950 200 “Safety of information technology equipment”.

• EN 301 489–4 V.1.3.1 (2002–8): “Electromagnetic compatibility and radio spectrumMatters (ERM); Electromagnetic Compatibility (EMC) standard for radio equipmentand services; Part 4. Specific conditions for fixed radio links and ancillary equipmentand services”

• ETSI EN 301 751 V.1.1. (2002–12): “Fixed Radio Systems; Point–to point equipmentand antennas; generic harmonized standard for point–to–point digital fixed radiosystems and antennas covering the essential requirements under article 3.2 of the1999/5/EC Directive”.

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2. FIRST AID FOR ELECTRICALSHOCK AND SAFETY RULES

2.1 FIRST AID FOR ELECTRICAL SHOCK

Do not touch the patient with bare hands until the circuit has been opened. Open the circuitby switching off the line switches. If that is not possible protect yourself with dry material andfree the patient from the conductor.

2.1.1 Artificial respiration

It is important to start mouth resuscitation at once and to call a doctor immediately. suggestedprocedure for mouth to mouth resuscitation method is described in the Tab. 2.1.

2.1.2 Treatment of burns

This treatment should be used after the patient has regained consciousness. It can also beemployed while artificial respiration is being applied (in this case there should be at least twopersons present).

Warning

• Do not attempt to remove clothing from burnt sections

• Apply dry gauze on the burns

• Do not apply ointments or other oily substances.

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2



Tab. 2.1

Step Description Figure

1 Lay the patient on his back with his arms parallel to the body. If thepatient is laying on an inclined plane, make sure that his stomachis slightly lower than his chest. Open the patients mouth andcheck that there is no foreign matter in mouth (dentures, chewinggum, etc.).

2 Kneel beside the patient level with his head. Put an hand underthe patient’s head and one under his neck.

Lift the patient’s head and let it recline backwards as far aspossible.

3 Shift the hand from the patient’s neck to his chin and his mouth,the index along his jawbone, and keep the other fingers closed to-gether. While performing these operations take a good supply ofoxygen by taking deep breaths with your mouth open.

4 With your thumb between the patient’s chin and mouth keep hislips together and blow into his nasal cavities

5 While performing these operations observe if the patient’s chestrises. If not it is possible that his nose is blocked: in that case openthe patient’s mouth as much as possible by pressing on his chinwith your hand, place your lips around his mouth and blow into hisoral cavity. Observe if the patient’s chest heaves. This secondmethod can be used instead of the first even when the patient’snose is not obstructed, provided his nose is kept closed by pres-sing the nostrils together using the hand you were holding hishead with. The patient’s head must be kept sloping backwards asmuch as possible.

6 Start with ten rapid expirations, hence continue at a rate of twelve/fifteen expirations per minute. Go on like this until the patient hasregained conscious–ness, or until a doctor has ascertained hisdeath.


CM.89012.I


2.2 SAFETY RULES

When the equipment units are provided with the plate, shown in Fig. 2.1, it means that theycontain components electrostatic charge sensitive.

Fig. 2.1

In order to prevent the units from being damaged while handling, it is advisable to wear anelasticised band (Fig. 2.2) around the wrist ground connected through coiled cord (Fig. 2.3).

Fig. 2.2

Elasticized

Ban

d

Fig. 2.3



The units showing the label, shown in Fig. 2.4, include laser diodes and the emitted power canbe dangerous for eyes; avoid exposure in the direction of optical signal emission.

Fig. 2.4

LASER


3. PURPOSE AND STRUCTURE OF THEMANUAL

3.1 PURPOSE OF THE MANUAL

The purpose of this manual consists in providing the user with information which allows tooperate and maintain the ALC radio family.

Warning: This manual does not include information relevant to the SCT/LCT managementprogram windows and relevant application. They will provided by the program itself as help–online.

3.2 AUDIENCE BASIC KNOWLEDGE

The following knowledge and skills are required to operate the equipment:

• a basic understanding of microwave transmission

• installation and maintenance experience on digital radio system

• a good knowledge of IP/OSI networks and routing policy.


3



3.3 STRUCTURE OF THE MANUAL

The manual is subdivided into sections each of them developing a specific topic entitling thesection.

Each section consists of a set of chapters, enlarging the main subject master.

Section 1 – User Guide

It provides the information about the main safety rules and expounds the purpose and thestructure of the manual.

Section 2 – Description and specifications

It traces the broad line of equipment operation and lists the main technical characteristics of thewhole equipment and units it consists of.

List of abbreviation meaning is also supplied.

Section 3 – Installation

The mechanical installation procedures are herein set down as well as the user electricalconnections.

The content of the tool kit (if supplied) is also listed.

Section 4 – Line–Up

Line–up procedures are described as well as checks to be carried out for the equipment correctoperation. The list of the instruments to be used and their characteristics are also set down.

Section 5 – Maintenance

The routine maintenance actions are described as well as fault location procedures in order toidentify the faulty unit and to re–establish the operation after its replacement with a spare one.


CM.89012.I


Section 6 – Programming and supervision

The ALC radio family is programmed and supervised using different software tools. Some ofthem are already available, some other will be available in the future.

This section lists the tools implemented and indicates if descriptions are already available.

Each description of software tools is supplied in a separated manual.

Section 7 – Composition

Position, part numbers of the components the equipment consist of, are shown in this section.





2Section

Descriptions andspecification




4. ABBREVIATION LIST

4.1 LIST OF ABBREVIATIONS

– AF Assured Forwarding

– AL–C Access Link Compact Version

– AIS Alarm Indication Signal

– ATPC Automaric Transmit Power Control

– BB Baseband

– BBER Background Block Error Radio

– BER Bit Error Rate

– DSCP Differentiated Service Code Point

– DSP Digital Signal Processing

– EMC/EMI Electromagnetic Compatibility/Electromagnetic Interference

– EOC Embedded Overhead Channel

– ERC european Radiocommunication Committee

– ESD Electrostatic Discharge

– FEC Forward Error Corrector

– FEM Fast Ethernet Module

– HDLC High Level Data Link Control

– IDU Indoor Unit

– IF Intermediate Frequency

– IpToS Type of Service IP

– LAN Local Area Network

– LAPS Link Access Procedure SDH

– LCT Local Craft Terminal

– LIM Line Interface Module


4



– LLF Link Loss Forwarding

– LOF Loss Of Frame

– LOS Loss Of Signal

– MAC Media Access Control

– MDI Medium Dependent Interface

– MDIX Medium Dependent Interface Crossover

– MIB Management Information Base

– MMIC Monolitic Microwave Integrated Circuit

– MTBF Mean Time Between Failure

– NE Network Element

– ODU Outdoor Unit

– OSI Open System Interconnection

– PDH Plesiochronous Digital Hierarchy

– PPI Plesiochronous Physical Interface

– PPP Point to Point Protocol

– PTOS Priority Type Of Service

– RIM Radio Interface Module

– SCT Subnetwork Craft Terminal

– SNMP Simple Network Management Protocol

– TCP/IP Transmission Control Protocol/Internet Protocol

– TOS Type Of Service

– VID Virtual LAN Identifier

– VLAN Virtual LAN

– WFQ Wait Fair Queue

– Wayside Traffic Additional 2 Mbit/s Traffic


5. SYSTEM PRESENTATION

5.1 RADIO SYSTEM OVERVIEW

5.1.1 General

AL is SIAE’s PDH radio series for low–to–medium transmission capacities in frequency bandsfrom 7 to 38 GHz.

Different hardware versions offer a range of transmission capacities from 2xE1 to 16xE1, on 4and 16QAM modulation.

Reduced cost, high reliability, compact size, light weight and full programmability are the keyfeatures of this radio series.

5.2 COMPLIANCE WITH INTERNATIONAL STANDARDS

The equipment complies with the following international standards:

• EN 301 489–4 for EMC

• ITU–R recommendations for all frequency bands

• EN 300 132–2 characteristics for power supply

• EN 300 019 environmental characteristics (Operation class 3.2 for IDU and class 4.1for ODU; storage: class 1.2; transport: class 2.3)

• EN 60950 for safety


5



5.3 APPLICATIONS

AL main applications are:

• radio communication between GSM cells

• radio links for voice and data transmission

• spur routes for high capacity radio system

• emergency links

5.4 SYSTEM ARCHITECTURE

The AL radio equipment consist of two separate units:

• the indoor unit (IDU) that houses tributary interfaces, modem and controller units

• the outdoor unit (ODU) that converts IF signals into RF signals and vice versa.

The two units are interconnected via coaxial cable. Fig. 5.1 and Fig. 5.2 show a typical IDU/ODUlayout whereas Fig. 5.3 and Fig. 5.4 show the radio block diagram in 1+0 and 1+1 configurationrespectively.

5.4.1 IDU

The IDU is available in the following hardware versions:

• 1 rack unit compact IDU, 1+0 configuration, 2/4/8xE1

• 1 rack unit compact IDU, 1+0 configuration, 2/4/8/16xE1

• 1 rack unit compact IDU, 1+1 configuration, 2/4/8xE1

• 1 rack unit compact IDU, 1+1 configuration, 2/4/8/16xE1

Compact IDUs consist of a single circuit board plugged into a wired shelf.

Line interfaces house tributary connections and, through a multiplexing/demultiplexing and bitinsertion/extraction process, supply/receive the aggregate signal to/from themodulator/demodulator.

Line interfaces carry out the digital processing for the QAM modulator and, in 1+1 configuration,duplicate the main signals on the transmission side and perform the changeover on the receiveside. Interfaces towards the ODU house the cable interface for bidirectional communicationbetween ODU and IDU, and implement the IF section of the mo–demodulator.

IDU power supply units process battery voltage and supply power to IDU and ODU circuits. Thecontroller section of the radio houses service channels interfaces, stores IDU firmware,


CM.89012.I


interfaces SIAE management systems though dedicated supervision ports, and routes externaland internal alarms to relay contacts.

5.4.2 ODU

The ODU houses the interface towards the IDU on one side, and towards the antenna flangeon the other. The ODU shifts the incoming QAM–modulated carrier to RF frequency through adouble conversion. The opposite occurs at the receive side, when the IF–converted carrier issent to the IDU demodulator.

Antenna coupling in 1+1 systems is done through a balanced or unbalanced hybrid.

5.5 MANAGEMENT SYSTEMS

AL radio can be controlled locally and remotely via SIAE supervision software:

• SCT/LCT: a Windows–based management system for small networks (up to 100 NE)

• NMS5–LX: a Linux–based management system for small–to–medium networks (upto 750 NE)

• NMS5–UX: a Unix–based management system for large networks (up to 2500 NE)

These systems provide a friendly graphic interface complying with current standard use ofkeyboards, mouse and windows.

5.5.1 Management ports

AL radio terminals connect to the supervision network via the following communication ports:

• Ethernet 10BaseT Port

• USB port

5.5.2 Protocols

SNMP along with IP or OSI protocol stacks are used to manage AL operation.



Fig. 5.1 1+1 ODU typical configuration with integrated antenna

Fig. 5.2 1+1 IDU typical configuration – 2x2, 4x2, 8x2, 16x2 Mbit/s

2

1RXTX

AL

TESTR

USER IN/OUTQ3 LCT

PS2

PS1

Trib. 13–14–15–16Trib. 5–6–7–8

Trib. 9–10–11–12Trib. 1–2–3–4

2121

48V2

+ ––+

48V1


CM.89012.I


Fig. 5.3 1+1 equipment block diagram

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affic

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Rx2

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7.5

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48 V

48 V

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Fig. 5.4 1+0 non expandable equipment block diagram

Mai

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IDU


6. EQUIPMENT TECHNICALSPECIFICATIONS

6.1 TECHNICAL SPECIFICATION

•– 7.11 to 7.7 GHz

– 7.7 to 8.5 GHz

– 10.7 to 11.7 GHz

– 12.75 to 13.25 GHz

– 14.4 to 15.35 GHz

– 17.7 to 19.7 GHz

– 21.2 to 23.6 GHz

– 24.5 to 26.5 GHz

– 27.5 to 29.5 GHz

– 37 to 39.5 GHz

•– ITU–R Rec F.385

– ITU–R Rec F.386




– ERC/T/R 13–02 Annex A or ITU–R Rec F.637

– ERC/T/R 13–02 Annex B

– ERC/T/R 13–02 Annex C



6

Frequency range

7 GHz

8 GHz

11 GHz

13 GHz

15 GHz

18 GHz

23 GHz

25 GHz

28 GHz

38 GHz

RF channel arrangement

7 GHz

8 GHz

13 GHz

15 GHz

18 GHz

23 GHz

25 GHz

28 GHz

38 GHz



•– 245/196/168/161/154 MHz– 311.32 MHz– 530 MHz– 266 MHz– 420/728 MHz– 1010 MHz– 1008/1232 MHz– 1008 MHz– 1008 MHz– 1260 MHz

•– see Tab. 6.1

Tab. 6.1 Signal capacity from 2x2 up to 16x2 Mbit/s

Capacity (Mbit/s) Configuration Mechanical dimension

2x2/4x2/8x2 1+0/1+1 1 unit high

2x2/4x2/8x2/16x2 1+0/1+1 1 unit high

•The following service channel and auxiliary capacity is available:

• 1+0/1+1 standard – 2x2, 4x2, 8x2, 16x2 Mbit/s version (1 standard unit)

One of the following service channels is available:– 64 kbit/s V11 co/contradirectional interface

• 1+0 or 1+1 hot stand–by and 1 antenna, 1+1frequency diversity on 1 cross polar antenna ortwo separated antennas

• ± 5 ppm; ± 10 ppm ageing included

• according to ETSI EN 301 390

• 4QAM/16QAM

Tab. 6.2 Modulation used according to bit rate and RF channel space

Modulat. type

Bit rate (Mbit/s)type

2x2 4x2 8x2 16x2

4QAM 3.5 MHz 7 MHz 14 MHz 28 MHz

16QAM n.a. 3.5 MHz 7 MHz 14 MHz

Go–return frequency7 GHz8 GHz11 GHz13 GHz15 GHz18 GHz23 GHz25 GHz28 GHz38 GHz

Transmission capacityMain signal from 2 to 16x2 Mbit/swith three different configura-tions

Service channel capacity

Antenna configuration

Frequency accuracy

RF spurious emissions

Modulation


CM.89012.I


• coherent

• refer to Tab. 6.3

• refer to Tab. 6.4 and Tab. 6.5

•

– version with balanced hybrid

– version with unbalanced hybrid

• 1x10–11

• –20 dBm

Tab. 6.3 Nominal output power �1 dB tolerance

Frequency Output power 4QAM Output power 16QAM

7 GHz +27 dBm +22 dBm




15 GHz standard +25 dBm +20 dBm

15 GHz LP +20 dBm –




28 GHZ +19 dBm +14 dBm


Demodulation

Output power at the antenna side,1+0 version

Receiver threshold at the antennaside 1+0 version

Additional losses both Tx and Rxsides, 1+1 version

4 dB ±0.5 dB

≤1.7 dB (branch1)/≤7 dB(branch 2)

Residual BER

Maximum input level for BER 10–3



Tab. 6.4 Guaranteed received threshold in 1+0 configuration

4QAM 16QAM

Freq. 2x2 4x2 2x2 4x2q

10–6 10–3 10–6 10–3 10–6 10–3 10–6 10–3

7 –91 dBm –93 dBm –88 dBm –90 dBm – – –84 dBm –86 dBm


11 –90.5 dBm –92.5 dBm –87.5 dBm –89.5 dBm – – –83.5 dBm –85.5 dBm

13 –90.5 dBm –92.5 dBm –87.5 dBm –89.5 dBm –83.5 dBm –85.5 dBm







Tab. 6.5 Guaranteed received threshold in 1+0 configuration

4QAM 16QAM

Freq. 8x2 16x2 8x2 16x2q

10–6 10–3 10–6 10–3 10–6 10–3 10–6 10–3

7 –85 dBm –87 dBm –82 dBm –84 dBm –81 dBm –83 dBm –78 dBm –80 dBm


11 –84.5 dBm –86.5 dBm –81.5 dBm –83.5 dBm –80.5 dBm –82.5 dBm –77.5 dBm –79.5 dBm









CM.89012.I


•– –40.8 to –57.6 Vdc

•

Fully equipped terminal with 370 m 1/4” IDU–ODU cable.

Tab. 6.6

Configuration

Guaranteed power

consumptionf�15 GHz

–40.8 a –57.6 Vdc

Nominal PowerConsumption

f�15 GHz–48 Vdc

Guaranteed power

consumptionf>15 GHz

–40.8 a –57.6 Vdc

Nominal PowerConsumption

f>15 GHz–48 Vdc

1+0 ≤46 Watts ≤44 Watts ≤39 Watts ≤37 Watts

1+1 ≤70 Watts ≤66 Watts ≤58 Watts ≤54 Watts

•

Tab. 6.7

IDU type

Guaranteed consumption

f�15 GHz–40.8 a –57.6 Vdc

Nominal Consumption

f�15 GHz–48 Vdc

1+0 configuration ≤25 Watts ≤24 Watts

• 3.15 A (M), 5x20 mm

•– –5° C to +45° C

– –33° C to +55° C

– –10° C to +55° C

– –40° C to +60° C

– 95% at +35° C– weather proof according to IP65 environmental

class

– Thermal resistance 0.5° C/WSolar heat gain: not exceeding 5° C

– ≤260 Km/h

•– refer to Tab. 6.8

Power supply

Power supply voltage

Power consumption

IDU only consumption

Fuse

Environmental conditions

Operational range for IDU

Operational range for ODU

Survival temperature rangefor IDUSurvival temperature rangefor ODUOperational humidity for IDU

Operational humidity for ODU

Heat dissipation of ODU

Wind load

Mechanical characteristics

Dimensions



Tab. 6.8 IDU/ODU dimensions

Width (mm) Height (mm) Depth (mm)

ODU 1+0 version 250 250 100

ODU 1+1 version 278 255 280

IDU 1+0/1+1 480 45 260

– refer to Tab. 6.9

Tab. 6.9 IDU/ODU weight

ODU 1+0 4.5 kg 1 1

ODU 1+1 13.3 kg 2 2

IDU 1+0/1+1 3.5/3.7 kg

Panning system 1+0/1+1 4.4 kg

– refer to typical Fig. 6.1, Fig. 6.2.

Fig. 6.1 IDU 1+0 standard (2x2/4x2 Mbit/s)

48V

+ –

Trib. 1–2–3–4

Trib. 5–6–7–8

PSLCTQ3 USER IN/OUT

RTEST

AL

Fig. 6.2 IDU 1+1 standard (2x2/4x2/8x2/16x2 Mbit/s)

2

1RXTX

AL

TESTR

USER IN/OUTQ3 LCT

PS2

PS1

Trib. 13–14–15–16Trib. 5–6–7–8

Trib. 9–10–11–12Trib. 1–2–3–4

2121

48V2

+ ––+

48V1

1. 7/8 GHz 1+0: 5.5 kg

2. 7/8 GHz 1+1: 15.3 kg

Weight

Mechanical layout


CM.89012.I


Fig. 6.3 1+0 ODU with separated antenna (pole mounting)

Fig. 6.4 1+1 ODU with separated antenna



Fig. 6.5 1+0 ODU with integral antenna (pole mounting)

Fig. 6.6 1+1 ODU with integral antenna (pole mounting)


CM.89012.I


Fig. 6.7 1+1 ODU with separated antenna (wall mounting)




7. CHARACTERISTICS OF THEINDOOR UNIT

7.1 GENERAL

The following IDU characteristics are guaranteed for the temperature range from –5° C to+45° C.

7.2 TRIBUTARY INTERFACE

7.2.1 2 Mbit/s interface

Input side

• 2048 kbit/s ±50 ppm

• HDB3

• 75 Ohm or 120 Ohm

• 2.37 Vp/75 Ohm or 3 Vp/120 Ohm

• 12 dB from 57 kHz to 102 kHz18 dB from 102 kHz to 2048 kHz14 dB from 2048 kHz to 3072 kHz

• 6 dB according to √f trend


7

Bit rate

Line code

Rated impedance

Rated level

Return loss

Max attenuation of the input cable



• see mask in Table 2, CCITT Rec. G.823

• see mask in Figure 1, CCITT Rec. G.742

• SUB–D, 25 pins

Output side

• 2048 kbit/s ±50 ppm

• 75 Ohm or 120 Ohm

• 2.37 Vp/75 Ohm or 3 Vp/120 Ohm

• in accordance with G.742/G.823

• see mask in Figure 15, CCITT Rec. G.703

• SUB–D, 25 pins

7.3 SERVICE CHANNEL INTERFACE

7.3.1 V.28 low speed synchronous/asynchronous data

• RS232

• CCITT Rec. V.28

• 9600 baud

• DTR, DSR, DCD

7.3.2 Alarm interface

User output

• normally open (NO) or normally closed (NC)

• 100 Mohm at 500 Vdc

• 0.5 Ohm

• 100 V

• 1A

Accepted jitter

Transfer function

Connector type

Bit rate

Rated impedance

Rated level

Output jitter

Pulse shape

Connector type

Data interface

Electrical interface

Input speed

Control wires

Relay contacts

Open contacts Rmin

Closed contacts Rmax

Switching voltage Vmax

Switching current Imax


CM.89012.I


User input

• 200 Ohm resist. (max) referred to ground

• 60 kOhm (min) referred to ground

7.3.3 64 kbit/s contra–directional interface V.11 (optional)

• ±100 ppm

• contra–directional

• clock and data on independent wires

• see Rec. CCITT V.11

7.3.4 Network Management Interface

RJ45 interface

• Ethernet Twisted Pair 802.3 10BaseT

• RJ45

• direct with a CAT5 Twisted Pair

• TCP/IP or IPoverOSI

LCT USB interface

• USB 1.1 version

• 1.5 Mbit/s

• PPP

RS232 interface (optional)

• V.28

• 9600, 19200, 38400, 57600

• PPP

Equivalent circuit recognised as aclosed contact

Equivalent circuit recognised asan open contact

Tolerance

Equipment side

Coding


LAN type

Connector

Connection to LAN

Protocol


Baud rate

Protocol

Electronic interface

Asynchronous baud rate

Protocol



7.4 MODULATOR/DEMODULATOR

•– 330 MHz

– 140 MHz

• 4QAM/16QAM

• from 4 Mbit/s to 34 Mbit/s depending on differentversions

• raised cosine (roll–off = 0.5)

• 5 taps

• 2.5 dB at 10–6

7.5 CABLE INTERFACE

• single coaxial cable for both Tx and Rx

• up to 370 m. with 1/4” cable type

• 50 Ohm

•– 330 MHz

– 140 MHz

– 388 kbit/s bidirectional

– IDU to ODU = 17.5 MHz/0 dBmODU to IDU = 5.5 MHz/0 dBm

– direct from battery voltage

Carrier modulating frequency

Tx side

Rx side

Type of modulation

Modulating signal

Spectrum shaping

Equalization

FEC coding gain

Interconnection with the ODU unit

Cable length

Rated impedance

Signal running along the cable

Tx nominal frequency

Rx nominal frequency

Transceiver management signals

Carrier for transceiver man-agement signals

Remote power supply


CM.89012.I


7.6 AVAILABLE LOOPS

The following loop are available within the IDU:

• Tributary loop

• Baseband loop

• IDU loop




8. DESCRIPTION OF THE INDOORUNIT – PDH INTERFACES

8.1 1+0/1+1 IDU VERSIONS

The following functional description covers the versions the IDU consists of as shown in chapter“Equipment technical specifications”.

The IDU is made up of a single motherboard that houses all the circuitry realizing the followingfunctionalities:

• Line interface

• Radio interface

• Equipment controller

• IDU loops

8.1.1 Line interface

The line interface performs the following operations:

• multiplexing process of the input tributaries

• generation of the aggregate frame by aggregating multiplexed tributaries and servicechannel.

Bit extraction and demultiplexing process happens at the receive side.

Tx side

Refer to Fig. 8.1. The 2 Mbit/s input signal is code converted from HDB3 to NRZ format beforebeing multiplexed. The multiplexing scheme depends on the number and the bit rate of the inputtributaries. Attached figures show different multiplexing scheme as follows:

• Fig. 8.2 – 2x2 Mbit/s multiplexing. The mux performs stuffing operation on each singletributary and generates a proprietary frame embedding the two tributaries to be sentto the Bit Insertion. Opposite operation occurs at the Rx side.


8



• Fig. 8.3 – 4x2 Mbit/s multiplexing. The mux aggregates the four 2 Mbit/s tributariesgenerating a 8448 kbit/s frame as per Recc. G.742. The multiplexed signal is then sentto the Bit Insertion. Opposite operation occurs at the Rx side.

• Fig. 8.4 – 8x2 Mbit/s multiplexing. The eight 2 Mbit/s tributaries are grouped in two 4x2Mbit/s groups each of one generating a G742 frame structure at 8448 kbit/s to be sentto the next Bit Insertion. Opposite operation occurs at the Rx side.

• Fig. 8.5 – 16x2 Mbit/s multiplexing. The sixteen 2 Mbit/s tributaries are grouped in four4x2 Mbit/s groups each of one generating a G.742 frame structure at 8448 kbit/s. Afurther multiplexing of the achieved four 8448 kbit/s streams will generate a framestructure at 34368 kbit/s as per Recc. G.751. This latter is to be sent to the Bit Insertion.Opposite operation occurs at the Rx side.

The multiplexed tributaries are then sent to the B.I. for aggregate frame generation occurringat the following bit rate depending on various versions implemented:

Tab. 8.1

Version Aggregate frame

2x2 Mbit/s 4860 kbit/s




The aggregate frame contains:

• the main signal from the MUX(s)

• the framed service signal from the service interface

• the EOC signals for supervision message propagation towards the remote terminal

• the frame alignment word

• the bits dedicated to the FEC.

All the synch. signals to perform multiplexing (demultiplexing) and BI (BE) process are achievedfrom a x0 at 40 MHz. The aggregate frame thus generates is sent to the QAM modulator.

Rx side

Refer to Fig. 8.6.

At Rx side the Bit extraction separates the main multiplexed signal from the service signal andthen after a proper demultiplexing process (opposite to that previously described at the Tx side)sends them to the output interfaces.


CM.89012.I


8.1.2 Radio interface

This functionality provides the following:

• QAM modemodulation

• power supply to IDU and ODU

• telemetry IDU/ODU

• cable interface

QAM modemodulation – Modulation side

See Fig. 8.7.

The aggregate signal from the BI undergoes the following process in digital form:

• serial to parallel conversion

• differential encoding

• generation of the shaped modulating signals feeding the IF part of the QAM modulator.

This latter comprises:

• recovery low pass filter to eliminate signal periodicity

• 330 MHz local oscillator

• a 90° phase shifter to supply two mixers with two in quadrature carriers

The thus obtained 330 MHz QAM modulated carrier is then sent to the cable interface forconnection with ODU.

QAM modemodulation – Demodulation side

See Fig. 8.7.

The 140 MHz, 4 or 16QAM modulated carrier from the ODU is reaching the IDU through thecable interface.

The connection to the demodulator input is made via a cable equalizer for cable losscompensation.

The IF section of the QAM demodulator extracts the I and Q analogue signals then digitalconverted for the following processing:

• clock recovery

• baseband equalisation and filtering

• bit polarity decision



• differential decoding

• parallel to serial conversion to recover the aggregate signal.

The aggregate signal is then sent to a frame alignment circuit and CRC analysis and then to theerror corrector to achieve the BER extimate, the PM and HBER/LBER alarms.

Power supply

Refer to Fig. 8.7. The –48 V battery voltage feeds the IDU and ODU circuitry. The servicevoltages for the IDU feeding are achieved through a DC/DC converter for +3.6 V generation anda step down circuit for –5V.

Both voltages are protected against overvoltages and overcurrents. The power to the ODU isgiven by the same battery running through the interconnection cable. A breaker protects thebattery against cable failure.

Telemetry IDU/ODU

Refer to Fig. 8.1 and Fig. 8.7. The dialogue IDU/ODU is made–up by the main controller andassociated peripherals within the ODU. Controls for ODU management and alarm reporting isperformed making use of a 388 kbit/s framed signals. The transport along the interconnetingcable is performed via two FSK modulated carriers: 17.5 MHz from IDU to ODU; 5.5 MHZ fromODU to IDU.

Cable interface

Refer to Fig. 8.7. This circuit permits to communicate to the far ODU through the interconnectingcable. It is mainly made up of a set of filters that:

• combine the 330 MHz, QAM modulated carrier/the 17.5 MHz carrier/the power supply

• separate the 140 MHz QAM modulated carrier and the 5.5 MHz carrier

8.1.3 Equipment controller

The controller functionality performs the following:

• houses the equipment software for equipment management

• interfaces the SCT/LCT program through supervision ports

• receive external alarms and route them to relay contacts along with the internal alarmsgenerated by the equipment.

The equipment software permits to control and manage all the equipment functionality. It isdistributed on two hardware levels: main controller and ODU peripheral controller. The dialoguebetween main and peripheral controllers is shown in Fig. 8.8.


CM.89012.I


Main controller

The activities executed by the main controller are the following:

• Communication management: it makes use of SNMP as management protocol and IPor IP over OSI as communication protocol stacks. See Fig. 8.9 for details. The interfaceports for the equipment management are the following:

– LAN Ethernet 10BaseT

– USB port used for SCT/LCT connection

– EOC embedded within the PDH radio frame for connection to the remote NEs

• Log–in: the main controller manages the equipment or network login/logout by settingand then controlling the user’s ID and relevant password.

• Database (MIB): validation and storing in a non–volatile memory of the equipmentconfiguration parameters.

• Equipment configuration: distribution of the parameters stored in the MIB towards theperipheral µPs for their attuation in addition to the controls from user not stored in theMIB (i.e. loops, manual forcing etc...).

• Alarm monitoring: acquisition, filtering and correlation of the alarms gathered fromslaved µPs. Local logger and alarm sending to the connected managers: SCT/LCT –NMS5UX. Management of the alarm signalling on the LIM front panel.

• Performances: PM management as per Recc. G.828.

• Download: the main controller is equipped with two flash memory banks containing therunning program (active bank) and the stand–by program (inactive bank). This permitsto download a new software release to the inactive bank without distributing the traffic.Bank switch enables the new release to be used.Download activity is based on FTP protocol which downloads application programs,FPGA configuration, configuration files on main controller inactive bank or directly onthe peripheral controllers.

Peripheral controllers

The peripheral controllers take place within the ODU and are slaved to main controller with thetask of activating controls and alarm reporting of dedicated functionality.

8.2 IDU LOOPS

To control the IDU correct operation a set of local and remote loops are made available. Thecommands are forwarded by the LCT/SCT program. Loop block diagram is shown by Fig. 8.10.



8.2.1 Tributary loop

Tributary local loop

Each input tributary is routed directly to the trib. output upon receiving the command from theLCT. The Tx line transmission is still on.

Tributary remote loop

Each tributary directed towards the Rx output line is routed back to the Tx line. The Rx line isstill on.

8.2.2 Baseband unit loop

This kind of loop is only local and is activated at BI/BE level. Tx line is still on.

8.2.3 IDU loop

This kind of loop permits to check the full IDU digital operation.


CM.89012.I


Fig. 8.1 Line interface block diagram – Tx side

Cod

eco

nver

ter

Cod

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ter

MU

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28x

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ig. 8

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BI:

– m

ain

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ices

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OC

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EC

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me

gene

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NR

Z

CK

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ener

ator

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r

to/fr

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ain

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r

Agg

rega

te fr

ame

5.5

MH

z

17.5

MH

z



Fig. 8.2 2x2 Mbit/s multiplexing/demultiplexing

MUXproprietary

frame

B.I.

DEMUXproprietary

frame

B.E.

Ck

Ck

Tx data

Rx data

2x2 Mbit/s

2x2 Mbit/s

Aggregate Ck


MUX 2 –>8G.742

B.I.

DEMUX 2 –>8G.742

B.E.

Ck

Ck

Framed data8448 Tx

Framed data8448 Rx

4x2 Mbit/s

4x2 Mbit/s

Aggregate Ck


CM.89012.I



MUX 2 –>8G.742

B.I.

DEMUX 8 –> 2G.742

B.E.

Ck 8448 kHz Tx

4x2 Mbit/s

4x2 Mbit/s

Aggregate Ck

MUX 2 –>8G.742

Framed data8448 Tx

4x2 Mbit/s

DEMUX 8 –> 2G.742

4x2 Mbit/s

Framed data8448 Rx

Ck

Data

Data

Data




MUX2 –>8G.742

B.I.

4x2 Mbit/s

Aggregate Ck

MUX2 –>8G.742

4x2 Mbit/s

MUX2 –>8G.742

4x2 Mbit/s

MUX2 –>8G.742

4x2 Mbit/sMUX

8–>34G.751

Ck 8448 kHz Tx

Framed data8448 kbit/s Tx

Framed data 34368kbit/s

Ck 34368 kHz Tx

DEMUX8 –>2G.742

B.E.

4x2 Mbit/s

Aggregate Ck

DEMUX8 –>2G.742

4x2 Mbit/s

DEMUX8 –>2G.742

4x2 Mbit/s

DEMUX8 –>2G.742

4x2 Mbit/sMUX

34–>8G.751

Ck 8448 kHz

Framed data8448 kbit/s Tx

Framed data 34368kbit/s

Ck 34368 kHz


CM.89012.I


Fig. 8.6 Line interface block diagram (Rx side)

from

dem

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ator

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the

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Fig. 8.7 Radio interface block diagram

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CM.89012.I


Fig. 8.8 Main and peripheral controller connection

Mai

n co

ntro

ller

338

kb/s

388

kbit/

s

LAN

US

BU

ser

InA

larm

/U

ser

Out

FS

Km

odem

FS

Km

odem

OD

U

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tor

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rec.

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iphe

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Fig. 8.9 IP/IPoverOSI protocol stack

APPLICATION SOFTWARE

SNMP

TCP/UDP

IPIPoverOSI

IS–ISISO 10589

PPP PPPLLCMAC

LAPDQ921

LCCMAC

USB EOC EthernetLAN EOC

EthernetLAN

Applic./present.session layers

Transportlayer

Routinglayer

Data linklayer

Physicallayer


CM.89012.I


Fig. 8.10 IDU loopback

MU

X

Trib

. loc

. loo

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Trib

. IN

DE

MU

X

BI

BE

MO

D

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IDU

BB

loop

IFco

mbi

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IDU

loop




9. CHARACTERISTICS OF THEOUTDOOR UNIT

9.1 GENERAL

The following ODU characteristics are guaranteed for the temperature range from –33° C to+55° C.

9.2 TECHNICAL SPECIFICATION

• see Tab. 9.1

•– 42 MHz (154 MHz duplex spacing)

56 MHz (161/168/196 MHz duplex spacing)84 MHz (245 MHz duplex spacing)

– 84 MHz

– 119 MHz

– 330 MHz

– 336 MHz

– 448 MHz

– 560 MHz

• 125 kHz step

•– 245/196/168/161/154 MHz

– 311,32 MHz

– 530 MHz


9

Output power at the antenna side

Transceiver tuning range

7 GHz

13 GHz

15 GHz

18 GHz

23 GHz

25 GHz/28 GHz

38 GHz

RF frequency agility

Duplex spacing

7 GHz

8 GHz

11 GHz



– 266 MHz

– 420/490/728 MHz

– 1010 MHz

– 1008/1232 MHz

– 1008 MHz

– 1260 MHz

•– 40 dB

– 20 dB

• 40 dB dynamic, 1 dB software adjustable

• 40 dB

•– PBR84 or UBR84 3

– UDR120 or UBR140

– UDR140 or UBR140

– PBR220 or UBR220

– PBR320 or UBR320

• from –20 dBm to threshold corresponding to BER10–3

• ±3 dB in the range –40 dBm to –75 dBm±4 dB in the range –30 dBm to –40 dBm

• –20 dBm

• “N”

•– 330 MHz (from IDU to ODU)

140 MHz (from ODU to IDU)

– 388 kbit/s

– 17.5 MHz (from IDU to ODU)5.5 MHz (from ODU to IDU)

• RF loop

3. PBR with integrated antennaUBR with separated antenna

13 GHz

15 GHz

18 GHz

23 GHz

25 GHz/28 GHz

38 GHz

ATPC dynamic range

7, 8, 11, 13, 15 GHz

18, 23, 25, 28, 38 GHz

Transmit power attenuation range

Transmitter shut–down

Antenna side flange

7/8 GHz

13 GHz

15 GHz

18/23/25 GHz

28/38 GHz

AGC dynamic range

Accuracy of Rx level indication (PCreading)

Maximum input level for BER 10–3

Type of connector at the cable interface side

Signals at the cable interface

QAM modulated carrier

Telemetry

Telemetry carriers

Available loops


CM.89012.I


Tab. 9.1 Nominal output power �1 dB tolerance

Equipment Output power 4QAM Output power 16QAM





15 GHz standard +25 dBm +20 dBm

15 GHz LP +20 dBm –






Note

In 1+1 hot stand–by version the output power decreases by the following values:

• –4 dB ±0.5 dB (balanced hybrid)

• –1.7/7 dB ±0.3 dB (unbalanced hybrid)




10. DESCRIPTION OF THE OUTDOORUNIT

10.1 GENERAL

The 1+0 ODU (refer to Fig. 10.1) consists of a two shell aluminium mechanical structure, oneshell housing all the ODU circuits, the other forming the covering plate.

On the ODU are accessible:

• the “N” type connector for cable interfacing IDU and ODU

• the “BNC” connector for connection to a multimeter with the purpose to measure thereceived field strength

• a ground bolt.

The 1+1 hot stand–by version (refer to Fig. 10.2) consist of two 1+0 ODUs mechanicallysecured to a structure housing the hybrid for the antenna connection.

10.2 TRANSMIT SECTION

Refer to block diagram shown in Fig. 10.3.

The 330 MHz QAM modulated carrier from the cable interface (see chapter 10.4) is forwardedto a mixer passing through a cable equalizer for cable loss compensation up to 40 dB at 330MHz. The mixer and the following bandpass filter give rise to a second IF Tx carrier thefrequency of which depends on the go/return frequency value. The mixer is of SHP type.

The IF Tx frequency is µP controlled. Same happens to Rx IF and RF local oscillators. This latteris common to both Tx and Rx sides.


10



The IF carrier is converted to RF and then amplified making use of a MMIC circuit. Theconversion mixer is SSB type with side band selection.

The power at the MMIC output can be manually attenuated, 1 dB step, by 20 dB (f ≥ 18 GHz)or 40 dB (f < 18 GHz). Total attenuation is 40 dB.

The automatic adjustment is performed making use of an ATPC (see paragraph 10.5 for details).

The regulated output power is kept constant against amplifier stage gain variation by a feedbackincluding the AGC.

Before reaching the antenna side the RF signal at the output of MMIC passes through thefollowing circuits:

• a decoupler plus detector diode to measure the output power

• a circulator to protect the amplifier stages against possible circuit mismatch.

• a ON/OFF switch for 1+1 operation

• a 0 or 20 dB attenuator (f ≥ 18 GHz) to made up a total attenuation of 40 dB

• an RF bandpass filter for antenna coupling.

An RF coupler plus a detector and a shift oscillator made up the RF loop which is enabled uponreceiving a µP control. The RF loop permits the Tx power to return back to receive side thuscontrolling the total local radio terminal performance.

10.3 RECEIVE SECTION

The RF signal from the Rx bandpass filter is sent to a low noise amplifier that improves thereceiver sensitivity.

The following down–converter translates the RF frequency to approximately 765 MHz.

The conversion mixer is SSB type. The sideband selection is given through a µP control.

A second down converter generates the 140 MHz IF carrier to be sent to the demodulator withinthe IDU. The level of the IF carrier is kept constant to –5 dBm thank to the IF amplifier stages,AGC controlled, distributed in the IF chain. In addition the AGC gives a measure of the receiveRF level.

Between two amplifiers a bandpass filter assures the required selectivity to the receiver. Thefilter is SAW type and the bandwidth depends on the transmitted capacity.


CM.89012.I


10.4 CABLE INTERFACE

The cable interface permits to interface the cable interconnecting IDU to ODU and viceversa.

It receives/transmits the following signals:

• 330 MHz (from IDU to ODU)

• 140 MHz (from ODU to IDU)

• 17.5 MHz (from IDU to ODU)

• 5.5 MHz (from ODU to IDU)

• remote power supply.

The 17.5 MHz and 5.5 MHz FSK modulated carriers, carry the telemetry channel. This latterconsists of two 388 kbit/s streams one from IDU to ODU with the information to manage the ODU(RF power, RF frequency, capacity, etc...) while the other, from ODU to IDU, sends back to IDUmeasurements and alarms of the ODU. The ODU management is made by a µP.

10.5 ATPC OPERATION

The ATPC regulates the RF output power of the local transmitter depending on the value of theRF level at the remote terminal. This value has to be preset from the local terminal as thresholdhigh and low. The difference between the two thresholds must be equal or higher than 3 dB.

As soon as the received level crosses the preset threshold level low (see Fig. 10.6) due to theincrease of the hop attenuation, a microP at the received side of the remote terminal sends backto the local terminal a control to increase the transmitted power. The maximum ATPC range is40 dB (f < 18 GHz) and 20 dB (f ≥ 18 GHz).

If the hop attenuation decreases and the threshold high is crossed then the control sent by themicroP causes the output power to decrease.

ATPC range can be reduced from the maximum value to 0 dB, by 1 dB step, consequently toa reduction of the output maximum power through an adjusted attenuation.



10.6 1+1 Tx SYSTEM

The two ODUs are coupled to the antenna side via a balanced or unbalanced hybrid.

1+1 Tx switching occurs in the 1+1 hot stand–by 1 antenna or 2 antennas versions as shownin Fig. 10.4 and Fig. 10.5.

The transmitter switchover is electromechanic type and consists of two ON/OFF switches withinthe two ODUs that assure at least 40 dB insulation on the stand–by transmitter.

Transmit alarm priority is shown in Tab. 10.1.

Tab. 10.1

Priority Levels Definition

Priority 1 RIM PSU Alarm

Priority 2 Manual forcing

Priority 3 Cable Short Alarm

Priority 3 Cable Open Alarm

Priority 3 Modulator Failure

Priority 3 ODU Unit Failure Alarm

Highest Priority 3 VCO Failure Alarm

Priority 3 IF Unit Alarm

Priority 3 ODU PSU Alarm

Priority 3 Tx Power Low Alarm

Priority 4 Request from remote terminal(both receivers alarmed)

Lowest Priority 5 Revertive Tx (branch one prefe-rential)


CM.89012.I


10.7 POWER SUPPLY

The battery voltage is dropped from the cable interface and then sent to a DC/DC converter togenerate three stabilized output voltages to be distributed to the ODU circuitry:

• +3.5 V

• a voltage comprised between +6.2 V and +8.2 V to power amplifiers operating atdifferent frequency bands

• a –12 V through an inverter circuit.

Each voltage is protected against overcurrent with automatic restart.

Protection against overvoltage occurs as soon as the output voltage raises more than 15%respect to the nominal voltage. The restart is automatic.



Fig. 10.1 1+0 ODU version

”N”

”BNC”

Ground bolt

Fig. 10.2 1+1 hot stand–by version


CM.89012.I


Fig. 10.3 ODU block diagram

Cab

lein

terf

ace

Cab

leeq

ualiz

.

DC

DC

Ste

pup

T

LNA

MM

IC

varia

ble

bw(c

apac

ityde

pend

ing)

AG

C

N ty

pe33

0M

Hz

–48

V

x

PR

x m

eas

140

MH

z14

0M

Hz

appr

ox.

765

MH

z

+3.5

V

+6.

2 to

8.2

V

–12

V

AG

C

x

PT

x at

t.co

ntro

l0

to 4

0 dB

IF L

Oun

it

MO

D5.

5M

Hz

RE

C17

.5M

Hz

DE

M17

.5M

Hz

MU

XD

EM

UX

388

kbit/

s

Ala

rmm

anag

&co

ntro

l

Alm

com

m

loop

s

5.5

MH

z

17.5

MH

z

388

kbit/

s

IF T

x

ante

nna

side

INV

BN

C

PR

xm

eas.

ctrl

RF

LO

unit R

x

Tx

RF

loop

ctrl

ctrl

ctrl

Rx

Tx



Fig. 10.4 1+1 hot stand–by 1 antenna

Antennaside

SW control

Tx side

Rx side

SW control

Tx side

Rx side

Fig. 10.5 1+1 hot stand–by 2 antennas

Firstantenna

SW control

Tx side

Rx side

SW control

Tx side

Rx side

Secondantenna


CM.89012.I


Fig. 10.6 ATPC operation

Thresh High

Thresh Low

Hop attenuation (dB)

20 dBATPC range

PTxmax.

PTxmin.

RemotePRxdBm

LocalPTxdBm

Hop attenuation (dB)

Tx

Rx

Rx

Tx

PTxactuation

Local Remote

PRx recording

Transmission

of PTx control

µP µPlevel

PTx control





3Section

Installation




11. INSTALLATION AND PROCEDURESFOR ENSURINGELECTROMAGNETICCOMPATIBILITY

11.1 GENERAL

The equipment consists of IDU and ODU(s) units and is mechanically made up of a wired 19”subrack (IDU) and a weather proof metallic container (ODU). The two units are shipped togetherin an appropriate cardboard box.

After unpacking, mechanical installation takes place followed by electrical connections asdescribed in the following paragraphs.

11.2 MECHANICAL INSTALLATION

11.2.1 IDU installation

The front side of the IDU mechanical structure is provided with holes at the sides. This allowsto fasten the subrack to a 19” rack by means of four M6 screws.

If two or more IDUs are to be mounted, leave at least 1/2 rack unit space (22 mm) between twoIDUs to avoid overheating problems.


11



11.3 ELECTRICAL WIRING

The electrical wiring must be done using appropriate cables thus assuring the equipmentcomplies with electromagnetic compatibility standards.

The cable terminates to flying connectors which have to be connected to the correspondingconnectors on the equipment front.

Position and pin–out of the equipment connectors are available in this section.

Tab. 11.1 shows the characteristics of the cables to be used and the flying connector types.

Tab. 11.1

Interconnecting points Type of connector termina-ting the cable

Type of cable/conductor

Battery Polarised SUB–D 3W3 femaleconnector

Section of each wire ≥ 2.5sq.mm

4

Tributary signals 25 pin SUB–D male connector 120 Ohm balanced four sym-metric pairs with shield

Coaxial connector 1.0/2.3 75 Ohm unbalanced with shield

User input/alarm output 9 pin SUB–D female connectorwith shielded holder

9 conductor cable with doublebrass sheath type interconduc-tor DB28.25 or equivalent

LCT USB connector USB connector

GND Faston male type Section area ≥ 6 sq. mm.

4. For power cable lenght longer than 20 m. a section of 4 mm is required.


CM.89012.I


11.4 GROUNDING CONNECTION

Fig. 11.1 and annexed legend show how to perform the grounding connections.

Fig. 11.1

IDUunit

ODUunit

2

6(+) (–)

4

Localground

Legend

(1) IDU grounding point, fast–on type. The cross section area of the cable used must be≥ 4 sq. mm. The fast–on is available on both sides of the IDU.

(2) ODU grounding bolt. The cross section area of the cable used must be ≥ 16 sq. mm

(3) IDU–ODU interconnection cable type Celflex CUH 1/4” terminated with N–type maleconnectors at both sides.

(4) Grounding kit type Cabel Metal or similar to connect the shield of interconnectioncable.

(5) Matching cable (tail) terminated with SMA male and N female connectors.

(6) Battery grounding point of IDU to be connected to earth by means of a cable with asection area 2.5 sq. mm. Length ≤ 10 m.

(7) Grounding cords connected to a real earth inside the station. The cross section areaof the cable must be ≥ 16 sq. mm

rackground

Indoor

Stationground

7

1 5

3 4 3




12. USER CONNECTIONS

12.1 CONNECTOR USE FOR 1+0/1+1 STANDARD VERSION

User connections are performed through connectors on the IDU front panel modules. Theconnectors are the following:

• Trib IN/OUT: 75 or 120 25–pin SUB–D male connector. For SUB–D connector detailsTab. 12.1.

• LCT: USB connector B type “Receptacle”. For connector detail see USB standard.

• USER IN/OUT: 7 pins SUB–D male connector.

• Q3: RJ45 connector. Connector details refer to Tab. 12.2.

• 50 Ohm connector for interconnection to ODU 5.

• 3 pin SUB–D 3W3 connector for interconnection to battery.

• V11: optional service interface. Connector details in Tab. 12.3.

• V.28: optional service interface. Connector details in Tab. 12.4.

• RS232 PPP: optional management interface. Connector details in Tab. 12.5.

5. SMA kind: max torque 0.5 Nm


12



12.2 STANDARD VERSION CONNECTORS

Tab. 12.1 Tributary connector pin–out

Pin 120 Ohm impedance 75 Ohm impedance Note

1 Tributary 1/5/9/13 input (cold wire) Ground

2 Tributary 1/5/9/13 input (hot wire) Tributary 1/5/9/13 input

14 Tributary 1/5/9/13 input (ground) Ground

15 Tributary 1/5/9/13 output (cold wire) Ground

16 Tributary 1/5/9/13 output (hot wire) Tributary 1/5/9/13 output

3 Tributary 1/5/9/13 output (ground) Ground



















13 Ground Ground

Note: The 75 Ohm impedance tributary connector pin–out is referred to the flying connectorsto be connected to the equipment connectors.


CM.89012.I


Tab. 12.2 100BaseT connector pin–out for 10/100BaseT Ethernet connection

Pin Description

1 Tx+

2 Tx–

3 Rx+

4 ––

5 ––

6 Rx–

7 ––

8 ––

Tab. 12.3 Connector pin–out for 64 kbit/s channel – V.11 interface

Pin Description

1 D–V11–Tx

2 D+V11–Tx

3 C–V11–Tx

4 C+V11–Tx

5 D–V11–Rx

6 D+V11–Rx

7 C–V11–Rx

8 C+V11–Rx

Tab. 12.4 Connector pin–out – V.28 interface

Pin Description

1 RTS

2 TD

3 DTR

4 DSR

5 GND

6 RD

7 CTS

8 DCD



Tab. 12.5 Connector pin–out – RS232 PPP interface

Pin Description

1 DCD

2 RD

3 TD

4 DTR

5 GND

6 DSR

7 RTS

8 CTS

9 NC


13. INSTALLATION ONTO THE POLE OFTHE ODU WITH SEPARATEDANTENNA

13.1 INSTALLATION KIT

Following installation kits are supplied with the equipment depending on different versions:

• 1+0 version

– antisliding strip (see Fig. 13.1)

– supporting plate plus 60–114 mm pole fixing bracket and relevant nuts and bolts(see Fig. 13.2)

– adapting tools and relevant bolts and nuts for 219 mm pole (see Fig. 13.3)

– antenna side flange, variable as function of RF frequency (see Fig. 13.4)

– support with ODU fast locking mechanism (see Fig. 13.2)

– flexible waveguide trunk for connection to antenna (optional) (see Fig. 13.2)

– kit for ground connection making part of ODU

• 1+1 version

– antisliding strip (see Fig. 13.1)

– supporting plate plus pole fixing bracket and relevant nuts and bolts (see Fig. 13.2)

– adapting tools and relevant bolts and nuts for 219 mm pole (see Fig. 13.3)

– hybrid with ODU fast locking mechanism (see Fig. 13.5)

– flexible waveguide trunk for connection to antenna (optional (see Fig. 13.2)

– kit for ground connection making part of the two ODUs.


13



13.2 REQUIRED TOOLS FOR MOUNTING (NOT SUPPLIED)

• N.2 13mm torque wrench

• N.1 15 mm torque wrench


• N.1 3 mm Allen wrench

13.3 INSTALLATION PROCEDURE

Installation procedure proceeds according to the following steps:

• Version 1+0: installation onto the pole of the supporting plate 6

• Version 1+1: installation onto the pole of the supporting plate 6

• Installation of the ODU (common to both 1+0 and 1+1 version)

• ODU grounding

1+0 version – Installation onto the pole of the supporting plate

Fig. 13.1 – Mount antislide strip around the pole. The position of the plastic blocks depends onthe position of the supporting plate (see next step)

Fig. 13.2 – Adhere the supporting plate to the antisliding strip plastic blocks and then secure itto the pole through the fixing bracket for 60–114 mm pole (see Fig. 13.2). Bolts and nuts areavailable on the supporting plate. Tightening torque must be 32 Nm.

Warning: As shown in Fig. 13.3 an adapting kit must be used for the 219 mm pole. It consistsof an additional plate to enlarge the standard supporting plate dimension and relevant U–boltfor 219 mm pole fixing.

Fig. 13.4 – Fix the flexible waveguide to the antenna side flange. Four fixing screws are availablethe dimensions of which depend on the waveguide type. Tighten progressively and alternativelythe four screws with the following torque:

Tab. 13.1

Frequencies Screw Tool Torque

from 18 to 38 GHz Allen screw M3 Allen key 2.5 mm 1 Nm

up to 15 GHz Allen screw M4 Allen key 3 mm 2 Nm

6. In case of 219 mm pole, an adapting kit is supplied for the purpose.


CM.89012.I


Fig. 13.4 – Fix the antenna side flange to the support with ODU fast locking mechanism. Theflange can be mounted horizontally (as shown in Fig. 13.4) or vertically as function ofconvenience.

Fig. 13.5 – Fix the support with ODU fast locking mechanism to the supporting plate making useof available bolts and nuts. Fig. 13.5 shows three possible positions. Tightening torque must be18 Nm.

1+1 version – Installation onto the pole of the supporting plate

Fig. 13.1 – Mount antislide strip around the pole. The position of the plastic blocks depends onthe position of the supporting plate (see next step)

Fig. 13.2 – Position the supporting plate to the antisliding strip plastic blocks and then secureit to the pole through the fixing bracket for 60–114 mm pole (see Fig. 13.2). Bolts and nuts areavailable on the supporting plate kit. Tightening torque must be 32 Nm.

Fig. 13.6 – Secure the hybrid with ODU fast locking mechanism to the supporting plate usingbolt and nuts available on the support plate. Tightening torque must be 18 Nm. Remove the plastic cover from the hybrid flange sides.

Warning: Do not remove the foil from the hybrid flange sides.


Tab. 13.2




Warning: It is advisable to shape the waveguide flexible trunk, connecting ODU flange withantenna flange as shown in Fig. 13.9. This avoids possible condensate to be channelledtowards the ODU flange.

Installation of the ODU

1. Remove the plastic cover from the ODU flange side. Apply silicon grease e.g. typeRHODOSIL PATE 4 to the O–ring of Fig. 13.8.Warning: Do not remove the foil from the flange.

2. Bring the ODU with the two hands and position the ODU handle at the bottom side.

3. Position the ODU body close to the support with ODU fast locking mechanism and alignODU side flange (see Fig. 13.8) to antenna side flange ( see Fig. 13.4 – 1+0 version)or hybrid side flange (see Fig. 13.6 – 1+1 version).

Note: For 1+0 version the ODU can assume positions of Fig. 13.7 depending on thepolarisation.



4. With respect to the flange alignment, turn the ODU body approx. 30° anti–clockwiseand then insert the ODU body into the support and search for alignment betweenreference tooth on the support (see Fig. 13.4 – 1+0 version or Fig. 13.6 – 1+1 version)and ODU body reference tooth (see detail Fig. 13.8)

5. When alignment is achieved, turn the ODU body clockwise until “clack” is heard andthe ODU rotation stops.

6. Secure ODU body on the support by tightening bolts (1) (see Fig. 13.4 – 1+0 versionor Fig. 13.6 – 1+1 version). Tightening torque must be 6 Nm.

Final assembly of 1+1 version is shown in Fig. 13.9.

13.4 GROUNDING

The ODU must be connected to ground making reference to details of Fig. 13.10.


CM.89012.I


Fig. 13.1

Antisliding strip Plastic blocks



Fig. 13.2 60–114 mm pole supporting plate fixing

Supporting plate

Use 15 mm wrench(32Nm torque)

Use 17 mm wrench(32Nm torque)


CM.89012.I


Fig. 13.3 Adapting kit for 219 mm pole



Fig. 13.4 Mounting possible position

Flexible waveguide trunk

Antenna side flange

Support with ODU fastlocking mechanism

Reference tooth

Position of antennaside flange

Reference tooth

1

1

13 mm wrench 6 Nm torque


CM.89012.I


Fig. 13.5



Fig. 13.6

Use 13 mm wrench(18 Nm torque)

Reference toothReference tooth

Hybrid with ODU fastlocking mechanism

1

1

RT1 RT2


CM.89012.I


Fig. 13.7 Position of the ODU body depending on the polarisation for 1+0. For 1+1 thepolarisation is always vertical: handle at the left side.

Vertical Horizontal



Fig. 13.8 ODU body reference tooth

”N”

”BNC”

Ground bolt

ODU side flange

Reference tooth

O–ring


CM.89012.I


Fig. 13.9 Final ODU assembly of 1+1 version



Fig. 13.10 ODU grounding

1

2

4

3

5

1. Bolt

2. Spring washer

3. Flat washer

4. Earth cable collar

5. Flat washer


14. INSTALLATION ONTO THE WALLOF THE ODU WITH SEPARATEDANTENNA



• 1+0 version

– wall supporting plate with additional contact surface extension plates (seeFig. 14.1)

– antenna side flange, variable as function of RF frequency (see Fig. 14.2)

– support with ODU fast locking mechanism (see Fig. 14.2)

– flexible waveguide trunk for connection to antenna (optional) (see Fig. 14.2)

– kit for ground connection making part of ODU

• 1+1 version

– supporting plate with additional contact surface extension tools (see Fig. 14.1)

– hybrid with ODU fast locking mechanism (see Fig. 14.4)

– flexible waveguide trunk for connection to antenna (optional (see Fig. 14.2)

– kit for ground connection making part of the two ODUs.


14




• N.2 13mm torque wrench





Installation procedure proceeds according to the following steps:

• Version 1+0: installation onto the wall of the supporting plate

• Version 1+1: installation onto the wall of the supporting plate

• Installation of the ODU (common to both 1+0 and 1+1 version)

• ODU grounding

1+0 version – Installation onto the wall of the supporting plate

Fig. 14.1 – Fix on the supporting plate the two supplied extension plates to increase the wallcontact surface.

Fig. 14.1 – Secure the supporting plate on the wall using the more suitable screws.


Tab. 14.1





CM.89012.I


Fig. 14.2 – Fix the antenna side flange to the support with ODU fast locking mechanism. Theflange can be mounted horizontally (as shown in Fig. 14.2) or vertically as function ofconvenience.

Fig. 14.3 – Fix the support with ODU fast locking mechanism to the supporting plate making useof available bolts and nuts. Fig. 14.3 shows three possible positions. Tightening torque must be18 Nm.

1+1 version – Installation onto the wall of the supporting plate

Fig. 14.1 – Fix on the supporting plate the two supplied extension plates to increase the wallcontact surface.

Fig. 14.1 – Secure the supporting plate on the wall using the more suitable screws.

Fig. 14.4 – Secure the hybrid with ODU fast locking mechanism to the supporting plate usingbolt and nuts available on the support plate. Tightening torque must be 18 Nm. Remove the plastic cover from the hybrid flange sides.

Warning: Do not remove the foil from the hybrid flange sides.


Tab. 14.2




Warning: It is advisable to shape the waveguide flexible trunk, connecting ODU flange withantenna flange as shown in Fig. 14.7 This avoids possible condensate to be channelled towardsthe ODU flange.

Installation of the ODU

1. Remove the plastic cover from the ODU flange side. Apply silicon grease e.g. typeRHODOSIL PATE 4 to the O–ring of Fig. 14.6.Warning: Do not remove the foil from the flange.

2. Bring the ODU with the two hands and position the ODU handle at the bottom side.

3. Position the ODU body close to the support with ODU fast locking mechanism and alignODU side flange (see Fig. 14.6) to antenna side flange ( see Fig. 14.2 – 1+0 version)or hybrid side flange (see Fig. 14.4 – 1+1 version).

Note: For 1+0 version the ODU can assume positions of Fig. 14.5 depending on thepolarisation.

4. With respect to the flange alignment, turn the ODU body approx. 30° anti–clockwiseand then insert the ODU body into the support and search for alignment between



reference tooth on the support (see Fig. 14.2 – 1+0 version or Fig. 14.4 – 1+1 version)and ODU body reference tooth (see detail Fig. 14.6)

5. When alignment is achieved, turn the ODU body clockwise until “clack” is heard andthe ODU rotation stops.

6. Secure ODU body on the support by tightening bolts (1) (see Fig. 14.2 – 1+0 versionor Fig. 14.4 – 1+1 version). Tightening torque must be 6 Nm.

Final assembly of 1+1 version is shown in Fig. 14.7.

14.4 GROUNDING

The ODU must be connected to ground making reference to details of Fig. 14.8.


CM.89012.I


Fig. 14.1 Wall supporting plate

Extension plate

Supporting plate

M8 bolt and nut



Fig. 14.2 Support with ODU fast locking mechanism

Flexible waveguide trunk

Antenna side flange

Support with ODU fastlocking mechanism

Reference tooth

Position of antennaside flange

Reference tooth

1

1



CM.89012.I


Fig. 14.3 Mounting possible positions



Fig. 14.4

Use 13 mm wrench(18 Nm torque)

Reference toothReference tooth

Hybrid with ODU fastlocking mechanism

1

1

RT1 RT2


CM.89012.I


Fig. 14.5 Position of the ODU body depending on the polarisation for 1+0. For 1+1 thepolarisation is always vertical: handle at the left side.

Vertical Horizontal




”N”

”BNC”

Ground bolt

ODU side flange

Reference tooth

O–ring


CM.89012.I


Fig. 14.7 Final ODU assembly of 1+1 version




1

2

4

3

5

1. Bolt

2. Spring washer

3. Flat washer


5. Flat washer


15. INSTALLATION ONTO THE POLE OFTHE ODU WITH INTEGRATEDANTENNA (KIT V52191, V52192)

15.1 FOREWORD

The installation onto the pole of the ODU with integrated antenna concerns both 1+0 and 1+1versions.



1+0 version

• 60 to 114 mm pole mounting kit consisting of:

– centering ring and relevant screws (see Fig. 15.1)

– antislide strip (see Fig. 15.2)

– pole support system and pole fixing brackets (see Fig. 15.3)

– ODU with O–ring and devices for ground connection

1+1 version

• pole mounting kit from 60 to 114 mm for 1+1 consisting of:

– centering ring and relevant screws (see Fig. 15.1)

– antislide strip (see Fig. 15.2)

– pole support system and pole fixing brackets (see Fig. 15.3)


15



• hybrid mechanical body (see Fig. 15.12)

• polarization twist disk (see Fig. 15.13)

• 2 ODUs with O–rings and devices for ground connection







Installation procedure proceeds according with the following steps:

1+0 version

1. installation onto the pole of the support system

2. installation of the antenna

3. installation of ODU

4. antenna aiming

5. ODU grounding

1+1 version

1. installation onto the pole of the support system

2. installation of the antenna

3. installation of hybrid circuit

4. installation of the two ODUs

5. antenna aiming

6. ODU grounding


CM.89012.I


15.4.1 Installation onto the pole of the support system and the antenna

Fig. 15.1 – Set the antenna in such a position as to be able to operate on its rear side. Locatethe five threaded holes around antenna flange. Mount centering ring onto antenna flange andtight it with 3 calibrated bolts.Caution: centering ring should be mounted so that the screws do not stick out.

Define if the antenna will be mounted with vertical or horizontal polarization. Check that freedrain holes stay at bottom side. Mount bolt type M10x30, in position A leaving it loose of 2 cmapprox. With horizontal polarization mount bolt type M10x30 in position D, leaving it loose of2 cm approx.

Fig. 15.2 – Mount antislide strip onto the pole. Place blocks as in Fig. 15.2 following antennaaiming direction. Tighten the strip with screwdriver.

Fig. 15.3 – Mount pole supporting system with relevant pole fixing brackets following antennaaiming direction as indicated by arrow. Antislide strip should result at the center of supportingplate. Supporting system should lean against antislide clamp with the tooth as in Fig. 15.4.Position the antenna in such a way that bolt in position A or D of Fig. 15.1 cross through holeE of Fig. 15.5. Secure the support system to the pole by means of the pole fixing brackets andrelevant fixing bolts.

Fig. 15.6 – Rotate the antenna body until the remainder three antenna holes coincide with thethree support holes. Secure the antenna to the support by thightening the relevant passingthrough bolts.

15.4.2 Installation of ODU

1+0 version

1. Apply silicon grease e.g. RHODOSIL PATE 4” to the O–ring (4) of Fig. 15.9 byprotecting finger hands with gloves.

2. Bring the ODU with the two hands and position the ODU handle at the bottom side. TheODU handle can assume position of Fig. 15.7 depending on the polarization.

3. Position the ODU body near the support system and align ODU side flange to antennaside flange (see Fig. 15.8).With respect to the flange alignment, turn the ODU body approx. 30° anti–clockwiseand then insert the ODU body into the support and search for alignment betweenreference tooth on the support (see Fig. 15.8) and ODU body reference tooth (seedetail of Fig. 15.9).

4. When alignment is achieved, turn the ODU body clockwise until “clack” is heard andthe ODU rotation stops. Fig. 15.10 and Fig. 15.11 show ODU housing final position for vertical and horizontalpolarization respectively.

5. Secure ODU body on the support system by tightening bolts (1) of Fig. 15.8.



1+1 version

Fig. 15.12 – Apply silicon grease, type “RHODOSIL PATE 4” to O–rings (1). Insert O–rings (1) and (6) into twist polarization disk (2).

Vertical polarization

Fix the disk on hybrid flange placing marker (4), on disk, close to V mark.

Horizontal polarization

Fix the disk on hybrid flange placing reference (4), on disk, close to H mark.

Caution: Twist disk has two planes. Take care of position marker (4) on twist disk. The positionof marker (4) plane should be in contact to hybrid like in figure. Tighten progressively andalternatively four screws (7) with four spring washers (8) with the following torque:

Tab. 15.1




Fig. 15.13 – Fix hybrid to support system with four bolts (1) taking care of RT1/RT2 positionshown by labels of Fig. 15.13. Tighten progressively and alternatively four bolts (1).

15.4.3 ODU installation

The installation procedure of the two ODUs is the same.

1. Apply silicon grease e.g. RHODOSIL PATE 4” to the O–ring (4) of the Fig. 15.9 byprotecting finger hands with gloves.

2. Bring the ODU with the two hands and position the ODU handle at the bottom side. For1+0 the ODU can assume position of Fig. 15.7 depending on the polarisation. For 1+1 the handle ODU position is always placed at the right side (horizontalpolarization).

3. Position the ODU body near the support system and align ODU side flange to antennaside flange (see Fig. 15.8). With respect to the flange alignment, turn the ODU bodyapprox. 30° anti–clockwise and then insert the ODU body into the support and searchfor alignment between reference tooth on the support (see Fig. 15.8) and ODU bodyreference tooth (see detail of Fig. 15.9).

4. When alignment is achieved, turn the ODU body clockwise until “clack” is heard andthe ODU rotation stops. Fig. 15.10 and Fig. 15.11 show ODU housing final position for vertical and horizontalpolarization respectively for 1+0 version.Fig. 15.14 shows ODU housing final position for 1+1 version.

5. Secure ODU body on the support system by tightening bolts (1) of Fig. 15.8.


CM.89012.I


15.5 ANTENNA AIMING

Antenna aiming for 1+0 version and 1+1 version is the same. The antenna aiming devices allowto perform the following adjustments with respect to the starting aiming position:

• ± 15° operating on the nut (3) shown in Fig. 15.15, onlyafter having loosen the nuts (7), (8), (9), (10) ofFig. 15.16.

• ± 15° operating on vertical adjustment worm screw (2)shown in Fig. 15.15 only after having loosen nuts (1),(2), (11) of Fig. 15.16 and (4) of Fig. 15.15.

For adjustment from 0° to +30° extract nut (1) Fig. 15.16and position it in hole (4), extract nut (2) Fig. 15.16 andposition it in hole (6). Operate on vertical adjustmentworm screw (2) after having loosen nuts (1), (2), (11) ofFig. 15.16 and (4) of Fig. 15.15.

For adjustment from 0° to –30° extract nut (1) ofFig. 15.16 and position it in hole (3), extract nut (2) ofFig. 15.16 and position it in hole (5). Operate on verticaladjustment worm screw (2) after having loosen nuts (1),(2), (11) of Fig. 15.16 and (4) of Fig. 15.15.

For vertical adjustment some markers, every 10°, are available on support. The bigger markergives 0° starting aiming position. Once the optimum aiming position is obtained, tighten firmlythe four nuts (1), (2), (11) of Fig. 15.16 and (4) of Fig. 15.15 for vertical adjustment and the fournuts (7), (8), (9), (10) of Fig. 15.16 for horizontal adjustment. Tighten with 15 mm wrench and32 Nm torque.

15.6 GROUNDING

See Fig. 15.17.

On ODU grounding can be connected with the available bolt spring washer and flat washers asshown.

Horizontal

vertical



Fig. 15.1

A

B C

D D

A B

C

A

B

C1

2

3

Horizontal polarizationVertical polarization

1. Antenna

2. Calibrated Allen screw

3. Centering ring

3 mm Allen key2,5 Nm torque


CM.89012.I


Fig. 15.2 Antislide strip

1

2

1. Steel belt

2. Plastic blocks



Fig. 15.3 Support mount on pole

2

3Antenna aiming direction

15 mm wrench32 Nm torque

1

3

1

1. Pole fixing brackets

2. Tooth

3. Bolt

4. Pole support system

3

3 3

3


CM.89012.I


Fig. 15.4

1

Antenna aiming direction

1. Tooth



Fig. 15.5

E


CM.89012.I


Fig. 15.6 Antenna installation on pole support

DA

B C

15 mm wrench32 Nm torque

A, B, C, D Bolt slots



Fig. 15.7 Position of the ODU handle depending on the polarisation for 1+0. For 1+1 the polarisation is always horizontal. Handle at the right side.

Vertical Horizontal


CM.89012.I


Fig. 15.8 Support system for ODU housing and reference tooth in evidence

1

1

1

HH

HH

HH

HH

H: Reference tooth


1




”N”

”BNC”

Ground bolt

ODU side flange

Reference tooth

O–ring


CM.89012.I


Fig. 15.10 ODU housing final position for vertical polarization

30°



Fig. 15.11 ODU housing final position for horizontal polarization

30°

30°


CM.89012.I


Fig. 15.12 Hybrid and twist disk

1. O–ring

2. Polarization twist disk

3. Hybrid mechanical body

4. Position marker of twist disk

5. Reference label for twist disk

6. O–ring

7. Allen screws

8. Spring washer

2

1

3

4

5

6

7

8



Fig. 15.13 Hybrid mount on pole support

21

1

1. Bolts

2. Spring washer


RT2

RT1


CM.89012.I


Fig. 15.14 ODU housing final position for 1+1 version



Fig. 15.15 Vertical and horizontal adjustments

21

3

4

1. Marker

2. Vertical adjustment

3. Horizontal adjustment

4. Bolt



CM.89012.I


Fig. 15.16 Antenna aiming block

2

1 3

5

4

69

10

87

1., 2., 3., 4. Horizontal aiming block bolts

5., 6., 7. Vertical aiming block bolts

8., 11. Threaded hole for vertical aiming up to –30°

9., 10. Threaded hole for vertical aiming up to +30°


11







1

2

4

3

5

1. Bolt

2. Spring washer

3. Flat washer


5. Flat washer


16. INSTALLATION ONTO THE POLE OFTHE ODU WITH INTEGRATEDANTENNA (KIT V32307, V32308)

16.1 FOREWORD

The installation onto the pole of the ODU with integrated antenna concerns both 1+0 and 1+1versions.



1+0 version

• 60 to 129 mm pole mounting kit:

– centring ring and relevant screws

– pole support system plus antenna (already assembled) and pole fixing brackets

– 1+0 ODU support and relevant screws

– ODU with O–ring and devices for ground connection

1+1 version

• 60 to 129 mm pole mounting kit:

– centring ring and relevant screws

– pole support system plus antenna (already assembled) and pole fixing brackets

– 1+0 ODU support


16



– hybrid and relevant screws

– polarization twist disk and relevant screws

– 2 ODUs with O–rings and devices for ground connection.


• N.1 2.5 mm Allen wrench



• N.1 13 mm spanner

• N.2 17 mm spanner.


Installation procedure is listed below:

1+0 version

1. antenna polarization

2. installation of the centring ring on the antenna

3. installation of 1+0 ODU support

4. installation onto the pole of the assembled structure

5. installation of ODU

6. antenna aiming

7. ODU grounding

1+1 version

1. antenna polarization

2. installation of the centring ring on the antenna

3. installation of 1+0 ODU support

4. installation onto the pole of the assembled structure


CM.89012.I


5. installation of hybrid

6. installation of ODUs

7. antenna aiming

8. ODU grounding.

16.5 1+0 MOUNTING PROCEDURES

16.5.1 Setting antenna polarization

Fig. 16.1 – Set the antenna in such a position to operate on its rear side. Locate the four 2.5 mmAllen screws around the antenna flange. Unscrew them (use 2.5 mm Allen wrench) and positionthe antenna flange according on: horizontal wave guide –> vertical polarization, vertical waveguide –> horizontal polarization. Screw again the four Allen screws.

16.5.2 Installation of the centring ring on the antenna

Fig. 16.1 – Set the antenna in such a position to operate on its rear side. Locate the three holesaround the antenna flange. Mount the centring ring onto antenna flange and tight it with the 3Allen screws M4 (use 3mm Allen wrench).

16.5.3 Installation of 1+0 ODU support

Fig. 16.1 – Mount the support onto assembled structure (pole support system plus antenna)using the four 6 mm Allen screws (use 6 mm Allen wrench). Two of the four screws, diagonallyopposed, must be mounted with the two bushes around.

16.5.4 Installation onto the pole of the assembled structure

Fig. 16.1 – Mount the assembled structure on the pole using the two pole fixing brackets andthe four 17 mm screws (use 17 mm spanner); the heads of the screws are inserted on theantenna side, the four nuts and the springs between nut and brackets are inserted on bracketside.



16.5.5 Installation of ODU (on 1+0 support)

Fig. 16.2 – Apply silicon grease (e.g. RHODOSIL PATE 4”) on the O–ring by protecting fingerswith gloves.

Fig. 16.3 – Bring the ODU with the two hands and position the ODU handle at the bottom side.The handle can assume the positions shown in the figure depending on the polarization. Positionthe ODU body near the support and align the wave guide of the ODU to the Wave guide of theantenna: respect to the position of wave guide alignment, turn the ODU body approx. 30°counter–clockwise and then insert the ODU body into the support and search for matchingbetween reference tooth on the support (see Fig. 16.4) and reference tooth on the ODU body.

Fig. 16.5 – When alignment of the references teeth is achieved, turn the ODU body clockwiseuntil “clack” is heard and rotation is stopped. In figure are shown ODU final position for bothpolarizations.

Fig. 16.4 – When ODU positioning is over, secure ODU body on the support by tightening bolts(use 17mm spanner, torque = 6Nm).

16.5.6 Antenna aiming

Antenna aiming procedure for 1+0 version or 1+1 version is the same.

Horizontal aiming: ±5° operating on the 17 mm nut shown in Fig. 16.6 with a 17 mm spanner,only after having loosen the two 17 mm nut on the pivot.

Vertical aiming: ±20° operating on the 13 mm nut shown in Fig. 16.6 with a 13 mm spanner, onlyafter having loosen the three 13 mm nut on the pole support.

Once optimum position is obtained, tighten firmly all the nuts previously loosen.

16.5.7 ODU grounding

ODU grounding is achieved with the bolt spring washer and flat washers as shown in Fig. 16.7.

16.6 1+1 MOUNTING PROCEDURES

In further page are explained all the mounting step not already discussed in “1+0 mountingprocedures”


CM.89012.I


16.6.1 Installation of Hybrid

Fig. 16.8 – The polarization twist disk must be always fixed on hybrid flange. Apply silicon grease(e.g. RHODOSIL PATE 4”) on the O–rings by protecting fingers with gloves. Bring thepolarization twist disk with the position marker down. Insert the O–ring into polarization twistdisk.

Vertical polarization: fix the twist disk on hybrid flange placing the marker of the disk towardsV mark.

Horizontal polarization: fix the twist disk on hybrid flange placing the marker of the disk towardsH mark.

Tighten progressively and alternatively the four screws and spring washer with following torque:

Tab. 16.1




Fig. 16.9 – Fix hybrid body to 1+0 support with four 13 mm bolts (use 13 mm spanner, torque= 18 Nm), tighten progressively and alternatively the bolts.

16.6.2 Installation of ODUs (on hybrid for 1+1 version)

For both ODUs.

Fig. 16.2 – Apply silicon grease e.g. RHODOSIL PATE 4” to the O–ring by protecting fingerswith gloves.

Fig. 16.3 – Bring the ODU with the two hands and position the ODU handle at the bottom side.The handle can assume the positions shown in the figure depending on the polarization. Positionthe ODU body near the support and align the wave guide of the ODU to the wave guide of thehybrid: respect to the position of wave guide alignment, turn the ODU body approx. 30°counter–clockwise and then insert the ODU body into the support. For 1+1 system the handleof the ODU is always positioned on the right. The polarization twist disk on the hybrid matchesthe antenna polarization.

Fig. 16.10 – When alignment of the reference teeth is achieved, turn the ODU body clockwiseuntil “clack” is heard and the rotation stops. In figure are shown ODUs final position.

Fig. 16.4 – When ODU positioning is over, secure ODU body on the support by tightening bolts(use 17 mm spanner, torque = 6 Nm).

WARNING: Internal codes (e.g. installation items, antennas, PCB) are here reported only asexample. The Manufacturer reserves the right to change them without any previous advice.



Fig. 16.1 1+0 pole mounting

Four 13mmscrews

Two bushes

1+0 support

Three 3mmAllen screws

Centring ring

Antenna


CM.89012.I



”N”

”BNC”

Ground bolt

ODU wave guide

Reference tooth

O–ring



Fig. 16.3 Position of the ODU handle depending on the polarisation for 1+0. For 1+1 the polarisation is always horizontal. Handle at the right side.

Vertical Horizontal


CM.89012.I


Fig. 16.4 1+0 support

1

1

2

23

1

1

3

4

5

4

5

1. 6 mm Allen screw

2. Bush (diagonally placed)

3. 17 mm Tightening bolts (max torque = 6 Nm)

4. Reference point for horizontal polarization

5. Reference point for vertical polarization



Fig. 16.5 ODU housing final position for both polarization

1+0 ODU with handle on the right:horizontal polarization

1+0 ODU with handle on the right:vertical polarization


CM.89012.I


Fig. 16.6 Antenna aiming

Horizontal aiming: two17mm block screws

Vertical aiming: three13mm block screws

Pole support

17mm nut for horizontaladjustment of antenna

Internal 5mm Allenscrew for vertical

adjustment of antenna




1

2

4

3

5

1. Bolt

2. Spring washer

3. Flat washer


5. Flat washer


CM.89012.I


Fig. 16.8 Hybrid and twist disk

1. O–ring

2. Polarization twist disk

3. Hybrid mechanical body

4. Position marker of twist disk

5. Reference label for twist disk

6. O–ring

7. Allen screws

8. Spring washer

2

1

3

4

5

6

7

8



Fig. 16.9 Hybrid installation


CM.89012.I


Fig. 16.10 1+1 ODUs installation





4Section

Line–up




17. LINE–UP OF THE RADIO HOP

17.1 LINE–UP OF THE RADIO HOP

The line–up consists of the following steps:

• on site radio terminal installation (perform user connections and ODU installation asdescribed in the relevant chapters)

• equipment switch–on (operate the ON/OFF switch on the IDU front)

• antenna alignment for maximum received RF signal level

• network element configuration

• check measurements.

17.1.1 Antenna alignment and received field measurement

Purpose of antenna alignment is to maximize the RF received signal level.

Proceed as follows:

• connect a multimeter to BNC connector on the ODU for AGC measurement

• adjust antenna pointing as soon as the maximum AGC voltage value is achieved.

The relationship between AGC voltage and received field is shown by Fig. 17.1.

The received field level has a tolerance of ±4 dB in the full temperature range.


17



17.1.2 Network element configuration

A factory default address is assigned to each network element that must normally bereconfigured on site following the network administrator rules.

To this purpose it is required to connect the PC, where the SCT/LCT program has been installed,to the network interfaces.

This has to be done via USB or Ethernet cable.

Warning: the checks that follow require a good knowledge of the program use.

The description of each menu and relevant windows are given by the program itself as help online.

Run the program and perform the connection to equipment by choosing from menu “Option” theconnection made via USB cable.

Perform the login to the equipment by entering:

• Equipment IP address 7

• User ID (default: SYSTEM)

• Password: (default: SIAEMICR)

Proceed to program what above mentioned following this path:

• IP Address: select menu “Equipment” from the menu bar and then CommunicationSetup–>Port Configuration. Enter the required port addresses in the availablecommunication ports. Press ? for details.

• Routing Table and Default Gateway: select menu “Equipment” from the menu bar andthen Communication Setup–>Routing table: enter the routes or default gateway ifnecessary. Press ? for details.Warning: the routing policy depends on the routing type: manual IP/OSPF/IS–IS. Therelevant routing rules must be normally given by network administrator.

• Remote Element Table: select menu “Tools” from menu bar and then SubnetworkConfiguration Wizard. Station name and remote element table must be assignedfollowing description of the contextual help on–line (?).

• Agent IP Address: select menu “Equipment” and then “Properties”. Assign the addressin accordance to the address of the remote element you want to reach.

7. If the connection is made via USB cable, the IP address is automatically achieved.


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17.1.3 Radio checks

It is advisable to perform the following measurements to check the correct operation of the radiohop:

• Transmitted power

• Received power

• RF frequency

• BER measurement

All these checks make use of the SCT/LCT program.

• Transmitted power, received RF level, RF frequency

– Run SCT/LCT program and then perform the connection to the equipment youwant to check.

– Make double click on the select equipment until main RADIO PDH–AL window isshown.

– On top of the window Tx/Rx power and frequency values are displayed. In caseof Tx power and frequency setup proceed to Branch 1/2 and Power/Frequenciessubmenus.

• BER measurement

– Run SCT/LCT program and then perform the connection to the equipment youwant to check.

– Make double click on the selected equipment until main RADIO PDH–AL windowis shown.

– On the left side select BER1/2 measure.In alternative it is possible to use the PRBS function if one or 2 Mbit/s line is free.

– Perform the BER measurement and check that values comply with therequirements.



Fig. 17.1 Detected voltage versus Rf received signal

–100 –80 –60 –40 –20

3

2,25

1,5

0,75

0 dBm

V

–70 –50 –30

1,125

1,875

2,625



5Section

Maintenance




18. PERIODICAL CHECKS

18.1 GENERAL

Periodical checks are used to check correct operation of the radio equipment without thepresence of any alarm condition.

The SCT/LCT programs running on the PC are used for the purpose.

18.2 CHECKS TO BE CARRIED OUT

The following checks must be carried out:

• check of the transmitted power;

• check of the received field strength (the reading must match the value resulting fromhop calculations);

• check of bit error rate and hop performances.

For checking procedures, please refer to SCT/LCT program and relevant help–on line.


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19. TROUBLESHOOTING

19.1 GENERAL

The AL equipment consists of the following replaceable parts:

• IDU

• ODU

Purpose of the troubleshooting is to pinpoint the faulty part and replace it with spare.

Warning: the replacement of a faulty IDU with spare causes the spare IDU to bere–programmed. To the purpose refer to chapter 19 for the relevant procedure.

19.2 TROUBLESHOOTING PROCEDURE

Troubleshooting starts as soon as one of the following alarm condition: IDU/ODU/REM isswitched ON on the IDU panel from (see Fig. 19.1) or alarm messages are displayed bymanagers SCT/LCT.

Two methods are used to troubleshoot the cause of fault:

• loop facilities

• alarm message processing using the manager SCT/LCT


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19.2.1 Loop facilities

The equipment is provided with different loops that help locate the faulty part.

Warning: the majority of loops causes the traffic to be lost.

The available loops are the following:

• local tributary loops: usually used to test the cables interfacing the equipmentupstreams

• remote tributary loops: usually used to test the two direction link performance makinguse of an unused 2 Mbit/s signal.

• baseband loop: it permits to test the LIM circuits

• IDU loop: it permits to test the complete IDU (optional)

• RF loop: it permits to test the complete radio terminal.

19.2.2 Alarm messages processing

When an alarm condition occurs, the equipment generates a number of alarm messages thatappear on the SCT windows ie: log history area and equipment view current alarm.

Investigation on the alarm message meaning permits to troubleshoot the faulty module.

Alarm message organisation

The alarms (traps) are organized as alarm grouping relevant to a specific functions performedby the equipment.

The alarm grouping is available only in the view current alarm submenu.

What follows is the list of the alarm grouping:

• COMMON – alarms which are not related to a specific part of the equipment butrelevant to the link as EOC radio link alarm or link telemetry fail. If these alarms are ONthe link is lost. Investigation must be made on a possible bad propagation or equipmentfailure. See the condition of the others alarm grouping.

• LIM – This grouping may generate alarms for the following causes:

– external fault: tributary loss signal

– LIM failure: i.e. multiplexer/demultiplexer failure or modulator/demodulator failure.

• RIM – This grouping may generate alarms for the following causes:

– external fault: demodulator fail alarm and local ODU alarm are generated whenthe ODU becomes faulty.

– RIM failure – power supply alarm along with cable short/open alarms ormodulator/demodulator alarms are activated.


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• RT – This grouping may generate alarms for the following causes:

– external fault: Rx power low alarm is generated given by a bad propagation or bya faulty remote terminal.

– ODU failure: PSU fail alarm or RF VCO alarm or RT IF alarm is activated. If thishappens, replace the ODU.

• UNIT – This grouping generates alarms when one of the units, the equipment consistsof, is faulty or does not respond to the controller polling. Replace the faulty unit.

• CONTROLLER – There is not an alarm message relevant to a controller modulefailure. An alarm condition causes Led IDU to steady lights up.

Fig. 19.1 IDU front

48V

+ –

Trib. 1–2–3–4

Trib. 5–6–7–8

PSLCTQ3 USER IN/OUT

RTEST

AL




20. EQUIPMENT CONFIGURATIONUPLOAD/SAVE/DOWNLOAD.PARAMETER MODIFICATION ANDCREATION OF VIRTUALCONFIGURATIONS.

20.1 SCOPE

This chapter describes the procedure to create configuration files.

Equipment configuration files must be used in case of replacing a faulty IDU with a spare. Tothis purpose it is necessary to upload, from each network element, equipment configurationsand save them on three configuration files.

It is advisable to do it upon the first installation. Configuration file download on the spareCONTROLLER permits to restore previous operating condition. It is also possible to createvirtual configuration without being connected to equipment.

20.2 PROCEDURE

To configure the spare IDU the following must be uploaded/saved on the file/downloaded:

• General equipment configuration

• Addresses and routing table

• Remote element table

To do it, run the SCT/LCT program (see relevant documentation available on line) until“Subnetwork Craft Terminal” application window is displayed.


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20.2.1 General equipment configuration

Upload and save

1. Select Open Configuration Template from Tools menu following this path: Tools �Equipment Configuration Wizard � File � Open Configuration Template.

The system will show Template Selection window.

2. Choose from Template Selection window the type of equipment and version (forinstance radio PDH AL: 2x2, 4x2, 8x2, 16x2 Mbit/s) from which you want to make theupload.

3. Press OK.

The system will display the Configuration Wizard window referring to the selected typeof equipment and version (example: radio PDH AL: 2x2, 4x2, 8x2, 16x2 Mbit/s)

4. Press Upload push button and select Get Current Type Configuration fromEquipment.

The system will display the Upload Configuration File window. The window will showthe equipment list.

5. Select the equipment you wish to upload a configuration file from (normally the localequipment) by activating the relevant box.

6. Press OK.

The system displays the Communication Status window where is pointed out:

– the operation status: upload in progress/complete.

– errors area: where error messages relevant to possible abort of the operation aredisplayed.

At the end of the operation by pressing OK, the system displays, the uploadedequipment parameters present into the Configuration Wizard window.

7. Save the uploaded configuration into a file by selecting Save File As command fromFile � Save � Save File As.

The system will display Save This Config. File.

Type the file name into the proper box (with “cfg” extension) and set the path to be usedto save the file.

8. Press Save push button to finish.

Download

After having installed the spare IDU proceed as follows:

1. Select Open File from Tools menu following this path: Tools menu � EquipmentConfiguration Wizard � File � Open � Open File.

The system will display Select a Config. File window.

2. Select the wanted file and open it by pushing Open push button. The system willdisplay the file content.


CM.89012.I


3. Press Download push button and select Configure Equipment as Current File.

4. Activate the box relevant to the equipment you wish to download configuration file to(normally the local equipment) and select Configure Equipment as Current File.

5. Press OK.


– the operation status: upload in progress/completed

– errors area: where error messages relevant to possible abort of operation aredisplayed.

6. Press OK to finish.

20.2.2 Addresses and routing table

Upload and save

1. Select Open Address Configuration Template from Tools menu following this path:Tools menu � Equipment Configuration Wizard � File � Open � Open AddressConfiguration Template .

The system will show the mask of the Address Comfiguration Template.

2. Press Upload push button and select Get Current Type Configuration fromEquipment.

The system will display the Upload Configuration File window.

3. Select the equipment you wish to upload a configuration from (normally the localequipment).

4. Press OK.


– the operation status: upload in progress

– errors area: where error messages relavant to possible abort of the operation aredisplayed.

At the end of the operation, the system displays, the equipment parameter present intothe Configuration Wizard window.

5. Save the uploaded configuration into a file by selecting Save File As command fromFile � Save � Save File As

The system will display the Save This Config. File window. Into the proper boxes typethe file name (with “cfg” extension) and set the path to be used to save the file.

6. Press Save push button to finish.



Download

1. Select Open File command from Tools menu following this path: Tools � EquipmentConfiguration Wizard � File � Open � Open File.

The system will display Select a Config. File window.

2. Select the wanted file and open it by pushing Open push button. The system willdisplay the parameters contained into the file.

3. Press Download push button and select Configure Equipment as Current File.

4. Activate the box relevant to the equipment you wish to download configuration file to(normally the local equipment).

5. Press OK.

The system will display Download Type Selection window. Activate boxes IP portaddresses configuration e Routing table . If OSPF facility is enabled, you can onlyselect Standard (IP/Communication/OSPF) Settings.

6. Press OK.

The system will show a warning indicating the possibility to procede the download ornot.

7. Press OK.

The system will show the Download in progress.

8. At the end of the download will be shown the file content.

20.2.3 Remote Element Table

Upload and save

1. Select window Subnetwork Configuration Wizard from menu Tools.

2. Select equipment Local from Actual Configuration Area and then press Retrieve. InNew configuration area is shown the list of remote equipment included the local.

3. Press Save to file. The system will show window Save remote element configurationfile.

4. Save the file with Rel extension and then press Save to finish.


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Download

1. Select Subnetwork Configuration Wizard from menu Tool.

2. Press Read from file and then select the desired file (with Rel extension).

3. Press Open push button and then the system will show the file content into the NewConfiguration Area.

4. Select into the Actual configuration area the equipment you desire to download, thelist of the remote element included the local.

5. Press Send to send the list.




21. BACK UP FULL EQUIPMENTCONFIGURATION WITHOUTPOSSIBILITY OF MODIFYING THEPARAMETERS

21.1 SCOPE

This chapter describes the procedure to back up the full equipment configuration.

This allows to recover the original equipment configuration in case of faulty IDU replacementwith spare.

21.2 CONFIGURATION UPLOAD

Foreword: it is advisable to upload the configuration during the first installation. Proceed asfollows:

1. Select “Equipment Configuration Wizard” from menu “Tools”; “EquipmentConfiguration Wizard” window will be displayed.

2. Select “Upload” and then “Backup Full Equipment Configuration”; “TemplateSelection” window will be displayed.

3. Select the correct equipment template (in case of uncorrected choice the backup willbe aborted).

4. Press OK and then select the equipment to be uploaded from “Upload ConfigurationFile” window.

5. Press OK and then edit the file name from “Save backup as” window.


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6. Press Save; “Equipment Configuration Wizard: Complete Backup” window will appear.

The window shows dynamically the backup procedure. If everything is OK, at the endof the upload will appear the word “done” showing the procedure success.


21.3 CONFIGURATION DOWNLOAD

Once the spare IDU has been installed proceed as follows:

1. Select “Equipment Configuration Wizard” from menu “Tools”. “EquipmentConfiguration Wizard” window will be displayed.

2. Select “Download” and than “Restore Full Equipment Configuration” fromEquipment Configuration Wizard. “Select Backup File” window will be displayed.

3. Select the wanted backup file with extension .bku and then press Open. “DownloadConfiguration File” window will be displayed.

4. Select the equipment to download and then press OK; “Equipment ConfigurationWizard: Complete restore” window will be displayed. This window shows dynamicallythe download operation. The word “done” indicates that download has beensuccessfully.


Warning: In case of EOC alarm proceed to restart the equipment.



6Section

Programming andsupervision




22. PROGRAMMING ANDSUPERVISION

22.1 GENERAL

The radio equipment was designed to be easily programmed and supervised.

The following tools are implemented to the purpose:

• SCT Subnetwork Craft Terminal + LCT Local Craft Terminal. They are used for remoteand local control of a subnetwork consisted of a maximum of 100 ALC radio equipment.

• NMS5–UX Network Management. It is used for the remote control of an entire networkconsisted of different SIAE equipment including ALC family radio equipment.

For details refer to relevant documentation. SCT/LCT documentation is available as helpon–line.


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7Section

Composition




23. COMPOSITION OF THE INDOORUNIT

23.1 GENERAL

The IDU is offered in the following versions:

• 1+0 compact

• 1+1 compact.

23.2 IDU PART NUMBER

The IDU is available in different versions, each of one identified by a specific part number. ThisP/N is shown on a label attached on the IDU mechanical structure, top left side.

The P/N consists of seven digits with the following meaning:

Digit Letter/number Meaning

1 G Functional assembly of units completed by a mechanical struc-ture

2 A AL family

3 I Indoor installation

4 to 7 006900730076007800790080008100840085008600870088008900900091

16x2 – 75 Ohm – 1+116x2 – 75 Ohm – 1+1EOW16x2 – 75 Ohm – 1+016x2 – coax – 1+08x2 – 75 – 1+08x2 – 120 – 1+08x2 – 120 – 1+116x2 – 120 – 1+18x2 – 75 – 1+116x2 – 120 – 1+08x2 – 120 – 1+0 EOW8x2 – 120 – 1+1 EOW4x2 – 120 – 1+0 V284x2 – 120 – 1+1 V2816x2 – CX – 1+1 Eth


23



This part number together with unit serial number is printed on a label, SIAE or custom,positioned on unit cover.


24. COMPOSITION OF OUTDOOR UNIT

24.1 GENERAL

The ODU consists of a mechanical structure that houses all the transceiver circuitry. In 1+1version the connection to the antenna is performed through a passive hybrid.

Both transceiver and hybrid are offered in different versions depending on the operating bands,the antenna configuration etc...

A label attached on the ODU structure shows the most significant parameters as:

•

•

•

•

•

A further label is positioned on the hybrid boby and shows the number of each transceiver andtype of hybrid, balanced or unbalanced.

The P/N consists of seven digits with the following meaning:

Digit Letter/number Meaning

1 G Functional assembly of units completed by a mechanical struc-ture

2 A AL family

3 O Outdoor installation

4 to 7 ........ Combination describing various band, sub–band and duplexerfrequencies

Warning: In case of unbalanced type the lowest loss is always referred to branch 1.


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operating band

operating sub–band and sideband

part number

serial number

duplexer frequency



Documents

AL PDH