AL (Compact Version) User Manual - Mn00142e ED07

7/16/2019 AL (Compact Version) User Manual - Mn00142e ED07

http://slidepdf.com/reader/full/al-compact-version-user-manual-mn00142e-ed07 1/234

User manual

Volume 1/1

MN.00142.E – 007

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 purely

indicative 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 – 007 I

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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 – 007II

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 TRAFFIC INTERFACE 33. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

7.2.1 2 Mbit/s interface 33. . . . . . . . . . . . . . . . . . . . . . . . . . . . .

7.2.2 Ethernet interface (option V12252) 34. . . . . . . . . . . . .

7.3 SERVICE CHANNEL INTERFACE 34. . . . . . . . . . . . . . . . . . . . . . . . . . .

7.3.1 V.28 low speed synchronous/asynchronous data 34.

7.3.2 Alarm interface 35. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

7.3.3 64 kbit/s contra–directional interface V.11 (optional) 35

7.3.4 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. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .



Inhaltsverzeichnis

AL (Compact version) – MN.00142.E – 007 III

8.1.2 Radio interface 41. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8.1.3 Equipment controller 42. . . . . . . . . . . . . . . . . . . . . . . . . .

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

8.2.1 Tributary loop 44. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

8.2.2 Baseband unit loop 44. . . . . . . . . . . . . . . . . . . . . . . . . . .

8.2.3 IDU loop 44. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

9. DESCRIPTION OF THE INDOOR UNIT – ETHERNETINTERFACES 55. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

9.1 TREATMENT OF ETHERNET SIGNALS 55. . . . . . . . . . . . . . . . . . . . .

9.1.1 2 Mbit/s tributaries 56. . . . . . . . . . . . . . . . . . . . . . . . . . .

9.1.2 Electrical Ethernet interface 56. . . . . . . . . . . . . . . . . . .

9.1.3 Front panel LEDs of Ethernet ports 57. . . . . . . . . . . . .

9.1.4 Bridge/switch function 57. . . . . . . . . . . . . . . . . . . . . . . .

9.1.5 Ethernet Full Duplex function 58. . . . . . . . . . . . . . . . . .

9.1.6 Link Loss Forwarding 59. . . . . . . . . . . . . . . . . . . . . . . . .

9.1.7 MDI/MDIX cross–over 59. . . . . . . . . . . . . . . . . . . . . . . .

9.1.8 VLAN functionality 59. . . . . . . . . . . . . . . . . . . . . . . . . . .

9.1.9 Switch organized by port 59. . . . . . . . . . . . . . . . . . . . . .

9.1.10 Switch organized by VLAN ID 60. . . . . . . . . . . . . . . . . .

9.1.11 Layer 2, Priority function, QoS, 802.1p 61. . . . . . . . . .

10. CHARACTERISTICS OF THE OUTDOOR UNIT 67. . . . . . . . . . . . . . .

10.1 GENERAL 67. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

10.2 TECHNICAL SPECIFICATION 67. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

11. DESCRIPTION OF THE OUTDOOR UNIT 71. . . . . . . . . . . . . . . . . . . .

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

11.2 TRANSMIT SECTION 71. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

11.3 RECEIVE SECTION 72. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

11.4 CABLE INTERFACE 73. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

11.5 ATPC OPERATION 73. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

11.6 1+1 Tx SYSTEM 74. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .



Contents

AL (Compact version) – MN.00142.E – 007IV

11.7 POWER SUPPLY 75. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

12. 24/48 VOLT DC/DC CONVERTER D52089 81. . . . . . . . . . . . . . . . . . .

12.1 GENERAL 81. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

12.2 ENVIRONMENTAL CONDITIONS 82. . . . . . . . . . . . . . . . . . . . . . . . . . .

12.3 ELECTRICAL CHARACTERISTICS 82. . . . . . . . . . . . . . . . . . . . . . . . .

Section 87. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Installation 87 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

13. INSTALLATION AND PROCEDURESFOR ENSURING ELECTROMAGNETICCOMPATIBILITY 89. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

13.1 GENERAL 89. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

13.2 MECHANICAL INSTALLATION 89. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13.2.1 IDU installation 89. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

13.3 ELECTRICAL WIRING 90. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

13.4 GROUNDING CONNECTION 91. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

14. USER CONNECTIONS 93. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

14.1 CONNECTOR USE FOR 1+0/1+1 STANDARD VERSION 93. . . . . .

14.2 STANDARD VERSION CONNECTORS 94. . . . . . . . . . . . . . . . . . . . . .

15. INSTALLATION ONTO THE POLE OF THE ODU WITH SEPARATEDANTENNA 97. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

15.1 INSTALLATION KIT 97. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

15.2 REQUIRED TOOLS FOR MOUNTING (NOT SUPPLIED) 98. . . . . .

15.3 INSTALLATION PROCEDURE 98. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

15.4 GROUNDING 100. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .



Inhaltsverzeichnis

AL (Compact version) – MN.00142.E – 007 V

16. INSTALLATION ONTO THE WALL OF THE ODU WITH SEPARATEDANTENNA 113. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .




16.4 GROUNDING 116. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

17. INSTALLATION ONTO THE POLE OF THE ODU WITH INTEGRATED

ANTENNA (KIT V52191, V52192) 125. . . . . . . . . . . . . . . . . . . . . . . . . . .

17.1 FOREWORD 125. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .




17.4.1 Installation onto the pole of the support system and theantenna 127. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

17.4.2 Installation of ODU 127. . . . . . . . . . . . . . . . . . . . . . . . . . .

17.4.3 ODU installation 128. . . . . . . . . . . . . . . . . . . . . . . . . . . . .

17.5 ANTENNA AIMING 129. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

17.6 GROUNDING 129. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

18. INSTALLATION ONTO THE POLE OF THE ODU WITH INTEGRATEDANTENNA (KIT V32307, V32308, V32309) 147. . . . . . . . . . . . . . . . . . .

18.1 FOREWORD 147. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .




18.5 1+0 MOUNTING PROCEDURES 149. . . . . . . . . . . . . . . . . . . . . . . . . . . .

18.5.1 Setting antenna polarization 149. . . . . . . . . . . . . . . . . . .

18.5.2 Installation of the centring ring on the antenna 150. . .

18.5.3 Installation of 1+0 ODU support 150. . . . . . . . . . . . . . . .

18.5.4 Installation onto the pole of the assembled structure 150

18.5.5 Installation of ODU (on 1+0 support) 150. . . . . . . . . . . .

18.5.6 Antenna aiming 151. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

18.5.7 ODU grounding 151. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

18.6 1+1 MOUNTING PROCEDURES 151. . . . . . . . . . . . . . . . . . . . . . . . . . . .



Contents

AL (Compact version) – MN.00142.E – 007VI

18.6.1 Installation of Hybrid 151. . . . . . . . . . . . . . . . . . . . . . . . . .18.6.2 Installation of ODUs (on hybrid for 1+1 version) 152. .

19. INSTALLATION ONTO THE POLE OF THE 4 GHz ODU WITHSEPARATED ANTENNA (KIT V32323) 163. . . . . . . . . . . . . . . . . . . . . . .




Section 169. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Line–up 169 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

20. LINE–UP OF THE RADIO HOP 171. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

20.1 LINE–UP OF THE RADIO HOP 171. . . . . . . . . . . . . . . . . . . . . . . . . . . . .

20.1.1 Antenna alignment and received field measurement 171

20.1.2 Network element configuration 172. . . . . . . . . . . . . . . . .

20.1.3 Radio checks 173. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

21. LINE–UP OF ETHERNET TRAFFIC (FOR IDU WITH V12252 ETHERNETMODULE ONLY) 175. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

21.1 GENERAL 175. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

21.2 LOCAL LAN–1 PORT TO REMOTE LAN–1 PORT (TRANSPARENTCONNECTION LAN PER PORT) 175. . . . . . . . . . . . . . . . . . . . . . . . . . . .

21.3 LOCAL LAN–1 PORT TO REMOTE LAN–1 PORT (WITH VLANs) 182

21.4 3 TO 1 PORT CONNECTIONS 186. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

21.5 3 TO 1 PORT CONNECTIONS, SETTINGS FOR UNTAGGEDTRAFFIC 186. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

21.6 3 TO 1 PORT CONNECTIONS, SETTINGS FOR TAGGED ANDUNTAGGED TRAFFIC 190. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

21.7 3 TO 1 CONNECTIONS: EXAMPLES OF PRIORITYMANAGEMENT 192. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Section 197. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Maintenance 197 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

22. PERIODICAL CHECKS 199. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

22.1 GENERAL 199. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .



Inhaltsverzeichnis

AL (Compact version) – MN.00142.E – 007 VII

22.2 CHECKS TO BE CARRIED OUT 199. . . . . . . . . . . . . . . . . . . . . . . . . . . .

23. TROUBLESHOOTING 201. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

23.1 GENERAL 201. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

23.2 TROUBLESHOOTING PROCEDURE 201. . . . . . . . . . . . . . . . . . . . . . . .

23.2.1 Loop facilities 202. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

23.2.2 Alarm messages processing 202. . . . . . . . . . . . . . . . . . .

24. EQUIPMENT CONFIGURATION UPLOAD/SAVE/DOWNLOAD.

PARAMETER MODIFICATION AND CREATION OF VIRTUALCONFIGURATIONS. 205. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

24.1 SCOPE 205. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

24.2 PROCEDURE 205. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

24.2.1 General equipment configuration 206. . . . . . . . . . . . . . .

24.2.2 Addresses and routing table 207. . . . . . . . . . . . . . . . . . .

24.2.3 Remote Element Table 208. . . . . . . . . . . . . . . . . . . . . . . .

25. BACK UP FULL EQUIPMENT CONFIGURATION WITHOUTPOSSIBILITY OF MODIFYING THE PARAMETERS 211. . . . . . . . . . .

25.1 SCOPE 211. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

25.2 CONFIGURATION UPLOAD 211. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

25.3 CONFIGURATION DOWNLOAD 212. . . . . . . . . . . . . . . . . . . . . . . . . . . .

Section 213. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Programming and supervision 213 . . . . . . . . . . . . . . . . . . . . . . . . . .

26. PROGRAMMING AND SUPERVISION 215. . . . . . . . . . . . . . . . . . . . . . .

26.1 GENERAL 215. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Section 217. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Composition 217 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

27. COMPOSITION OF THE INDOOR UNIT 219. . . . . . . . . . . . . . . . . . . . . .

27.1 GENERAL 219. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .



Contents

AL (Compact version) – MN.00142.E – 007VIII

27.2 IDU PART NUMBER 219. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

28. COMPOSITION OF OUTDOOR UNIT 221. . . . . . . . . . . . . . . . . . . . . . . .

28.1 GENERAL 221. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .



AL (Compact version) – MN.00142.E – 007 1

Ó Ó Ó Ó Ó Ó Ó Ó Ó Ó Ó Ó











1Section

User guide



1. TITOLO DEL CAPITOLOCM.89012.I

AL (Compact version) – MN.00142.E – 0072




1. DECLARATION OF CONFORMITY

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

• Digital radio relay system AL7








• Digital radio relay system AL28• Digital radio relay system AL38

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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Î Î Î Î Î Î

1








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 as

possible.

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 chin

with 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

E l a s t i ci z e d

B an 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 management

program 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.

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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 correct

operation. 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 and specification








4. ABBREVIATION LIST

4.1 LIST OF ABBREVIATIONS

– AF Assured Forwarding

– ALC 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

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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 bands

from 7 to 38 GHz.

Different hardware versions offer a range of tributaries traffic from 2xE1 to 16xE1, with or withoutEthernet traffic, on 4 and 16QAM modulation, with capacity up to 64 Mbit/s.

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

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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

• Ethernet traffic in point to point communication

5.4 SYSTEM ARCHITECTURE

The AL radio equipment consist of two separate units:

• the indoor unit (IDU) that houses tributary interfaces, Ethernet ports modem andcontroller 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

Ethernet module V12252 can be housed inside IDU, as option, for Ethernet traffic. CompactIDUs 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 receive




CM.89012.I


side. 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,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 flange

on 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 with optionalEthernet module (V12252)

10/100 BTX

321

ACTLINK

DPLXDPLXLINKACTACT

LINKDPLX

2

1RXTX

AL

TESTR

PS2

PS1

2121

48V2 +

– – +

48V1Q3 LCT USER IN/OUT

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16




CM.89012.I


Fig. 5.3 1+1 equipment block diagram

M a i n t r a f f i c

C A B L E

I N T E R F

.

O D U 1

C O N T R O L L E R

S e r v i c e s

C A B L E

I N T E R F

.

O D U 2

C O N T R O L L E R

R a d i o I n t e r f a c e

2

M A I N

C O N T R O L L E R

I D U C O N T R O L

C o n t r o l l e r U n i t

I D

U

C A B L E

C A B L E

I N T E R F .

1

T x 1

R x 1

O D U 1

S W

C O N T R .

T x 2

R

x 2

O D U 2

S W

C O N T R .

C A B L E

M U X

D E M U X

4 d B o r

1 . 5 / 7 . 5 d B


C A B L E

I N T E R F .

2

M O D

D E M

S C T / L C T

O D U C O N T R O L

A L A R M

B I

D S P

D S P

I F I F

L i n e I n t e r f a c e

B A T T .

M O D

D E M

B A T T .

D S P

4 8 V

4 8 V

S e r v i c e s

M O D

D E M

D E M

B E

I F I F

R a d i o I n t e r f a c e

1





Fig. 5.4 1+0 non expandable equipment block diagram


C A B L E

I N T E R

F .

O D U

C O N T R O L L E R

S e r v i c e s

M A I N

C O N T R O L L E R

I D U C O N T R O L

C A B L E

C A B L E

I N T E R F .

1

T

x 1

R

x 1

O D U

S W

C O N T R .

M U X

D E M U X


M O D

D E M

S C T / L C T

O D U C O N T R O

L

A L A R M

B I

D S P

D S P

I F I F

B A T T .

4 8 V

S e r v i c e s

M O D

D E M

B E

I D U




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


– no ITU–R Rec. for PDH 11 GHz band




– 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


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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

11 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

Capacity (Mbit/s) Configuration Mechanical dimension

2x2/4x2/8x2 (max 16 Mbit/s) 1+0/1+1 1 unit

2x2/4x2/8x2/16x2 (max 32 Mbit/s) 1+0/1+1 1 unit

16x2 + Ethernet (max 32 Mbit/s) 1+0/1+1 1 unit

16x2 + Ethernet (max 64 Mbit/s) 1+0/1+1 1 unit

•

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

Go–return frequency

7 GHz

8 GHz

11 GHz

13 GHz

15 GHz

18 GHz

23 GHz

25 GHz

28 GHz

38 GHz

Transmission capacity

Up to 16x2 Mbit/s with or withoutEthernet traffic

Service channel capacity

Antenna configuration

Frequency accuracy

RF spurious emissions

Modulation




CM.89012.I


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

Modulat. Bit rate (Mbit/s)type

2x2 4x2 8x2 16x2 64

4QAM 3.5 MHz 7 MHz 14 MHz 28 MHz –

16QAM n.a. 3.5 MHz 7 MHz 14 MHz 28 MHz

• 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 4x2

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 16x2

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 (refer to Tab. 6.6).

Tab. 6.6

Configuration

Guaranteed powerconsumption (IDU)

f315 GHz

–40.8 to –57.6 Vdc


f>15 GHz

–40.8 to –57.6 Vdc

1+0 ≤32 W ≤25 W

1+1 ≤52 W ≤40 W

• (refer to Tab. 6.7)

Tab. 6.7

Configuration


f315 GHz –40.8 to –57.6 V

dc


f >15 GHz –40.8 to –57.6 Vdc

1+0 ≤11 W ≤11 W

1+1 ≤12 W ≤12 W

• (refer to Tab. 6.8)

Tab. 6.8

Guaranteed consumptionf3 15 GHz –40,8Vdc

Guaranteed consumptionf> 15 GHz –40,8Vdc

≤ 0,79 A ≤ 0,62 A

• 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

Power supply

Power supply voltage

Power consumption

IDU only power consumption

Power supply connector consumption

Fuse

Environmental conditions

Operational range for IDU

Operational range for ODU

Survival temperature rangefor IDU

Survival temperature rangefor ODU





– 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. 6.9

Tab. 6.9 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. 6.10

Tab. 6.10 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 and Fig. 6.3.

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

R

TEST

AL

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

2

1

RXTX

AL

TEST

R

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

Operational humidity for IDUOperational humidity for ODU

Heat dissipation of ODU

Wind load

Mechanical characteristics

Dimensions

Weight

Mechanical layout




CM.89012.I


Fig. 6.3 IDU 1+1 (up to 16x2 Mbit/s coax. conn.) + Ethernet module

10/100 BTX

321

ACTLINK

DPLXDPLX

LINKACTACT

LINK

DPLX

2

1RXTX

AL

TESTR

PS2

PS1

2121

48V2 +

– – +

48V1Q3 LCT USER IN/OUT

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16





Fig. 6.4 1+0 ODU with separated antenna (pole mounting)

Fig. 6.5 1+1 ODU with separated antenna




CM.89012.I


Fig. 6.6 1+0 ODU with integral antenna (pole mounting)

Fig. 6.7 1+1 ODU with integral antenna (pole mounting)





Fig. 6.8 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 TRAFFIC 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

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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

7.2.2 Ethernet interface (option V12252)

RJ45 interface

• Ethernet Twisted Pair 802.3 10BaseT/100BaseT

• RJ45

• direct with a CAT5 Twisted Pair

• TCP/IP or IPoverOSI

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

Accepted jitter

Transfer function

Connector type

Bit rate

Rated impedance

Rated level

Output jitter

Pulse shape

Connector type

LAN type

Connector

Connection to LAN

Protocol

Data interface

Electrical interface

Input speed

Control wires




CM.89012.I


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

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/100BaseT

• RJ45

• direct with a CAT5 Twisted Pair

• TCP/IP or IPoverOSI

Relay contacts

Open contacts Rmin

Closed contacts Rmax

Switching voltage Vmax

Switching current Imax

Equivalent circuit recognised as aclosed contact

Equivalent circuit recognised asan open contact

Tolerance

Equipment side

Coding


LAN type

Connector

Connection to LAN

Protocol





LCT USB interface

• USB 1.1 version

• 1.5 Mbit/s

• PPP

RS232 interface (optional)

• V.28

• 9600, 19200, 38400, 57600

• PPP

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


Baud rate

Protocol

Electronic interface

Asynchronous baud rate

Protocol

Carrier modulating frequency

Tx sideRx side

Type of modulation

Modulating signal

Spectrum shaping

Equalization

FEC coding gain

Interconnection with the ODU unit

Cable length

Rated impedance




CM.89012.I


• – 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

7.6 AVAILABLE LOOPS

The following loop are available within the IDU:

• Tributary loop

• Baseband loop

• IDU loop

Signal running along the cableTx nominal frequency

Rx nominal frequency

Transceiver management signals

Carrier for transceiver man-agement signals

Remote power supply








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 service

channel.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.

Î Î Î Î Î Î

Î Î Î Î Î Î

Î Î Î Î Î Î

Î Î Î Î Î Î

Î Î Î Î Î Î

Î Î Î Î Î Î

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 is

given 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 the

task 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

C o d e

c o n v e r t e r

C o d e

c o n v e r t e r

M U X

2 x 2 / 4 x 2

8 x 2 / 1 6 x 2

s e e

F i g . 8 . 2

t h r o u g h

F i g . 8 . 5

B I :

– m a i n t r a f f i c

– s e r v i c e s

– E O C

– F E C

– F A W

F r a m e

g e n e r a t o r

X 0 3 8 . 8 8 M H z

n x 2

N R Z

C K

N R Z

C K

– F S K m o d / d e m o d

– 3 8 8 f r a m e

g e n e r a t o r / r e c e i v e r

t o / f r o m m a i n

c o n t r o l l e r

A g g r e g a t e f r a m e

5 . 5 M H z

1 7 . 5 M H z





Fig. 8.2 2x2 Mbit/s multiplexing/demultiplexing

MUXproprietary

frame

B.I.

DEMUX

proprietaryframe

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.

DEMUX8 –> 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

DEMUX8 –> 2

G.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/sMUX8–>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)

f r o m d e m o d u l a t o r s i d e o f

t h e r a d i o i n t e r f a c e

B E

D E M U X

2 / 2 x 2 / 4 x 2

8 x 2 / 1 6 x 2

S e e F i g . 8 . 2

t h r o u g h

F i g . 8 . 5

C o d e

c o n v e r t e r

C o d e

c o n v e r t e r

n x 2

M b i t / s





Fig. 8.7 Radio interface block diagram

C a b l e

i n t e r f a c e

O v e r c u r r e n t

p r o t e c t .

R e m o t e p o w e r s u p p l y

5 . 5 M H z

Q A M

M O D

( I F p a r t )

3 3 0 M H z

D C

D C

a g g r e g a t e

f r a m e ( f r o m

B I o f l i n e i n t e r f a c e )

b a t t e r y

– 4 8 V

I / V

p r o t e c t

S t e p

d o w n

+ 3 . 6 V

– 5 V

C a b l e

e q u a l i z .

D E M

Q A M

( I F p a r t )

I & Q

1 7 . 5 M H z

f r o

m l i n e i n t e r f a c e

t o l i n e i n t e r f a c e

A

D

– C k r e c o v e r y

– C a r r i e r

l o c k

– E q u a l i z

. & f i l t .

– D e c i s i o

n

– D i f f . d e

c o d .

– S / P

C R C

a n a l y s i s

& a l i g n e r

F E C

– B

E R m e a s .

– P

. M .

– B E R e x t i m a t e s

– H i g h B E R

– L o w B E R

– E W

t o B E o f l i n e

i n t e r f a c e

– S / P c o n v e r s i o n

– d i f f . e n c o d i n g

– m o d u l a t i n g

s i g n a l g e n e r a t o r




CM.89012.I


Fig. 8.8 Main and peripheral controller connection

M

a i n c o n t r o l l e r

3 3 8 k b / s

3 8 8 k b i t / s

L A N

U S B

U s e r I n

A l a r m

/

U s e r O

u t

F S K

m o d e m

F S K

m o d e m

O D U

E O C

3 8 8 k b i t / s

g e n e r a t o r

r e c e i v e r

g e n / r e c .

P e r i p h e r a l

c o n t r o l l e r





Fig. 8.9 IP/IPoverOSI protocol stack

APPLICATION SOFTWARE

SNMP

TCP/UDP

IPIPoverOSI

IS–IS

ISO 10589

PPP PPPLLCMAC

LAPDQ921

LCCMAC

USB EOCEthernet

LANEOC

EthernetLAN

Applic./present.session layers

Transportlayer

Routinglayer

Data linklayer

Physicallayer




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Fig. 8.10 IDU loopback

M U X

T r i b . l o c . l o o p

T r i b . I N

D E M U X

B I

B E

M O D

T r i b . O U T

T r i b . r e m .

l o o p

D E M

I D U

B B l o o p

I F

c o m b i n e r

I D U l o o p








9. DESCRIPTION OF THE INDOORUNIT – ETHERNET INTERFACES

The indoor unit can be provided with Ethernet module option (V12252). In this way theequipment has both 2 Mbit/s and Ethernet ports, and the bit rate assigned to Ethernet traffic isthe nominal capacity of the radio minus enabled tributaries.

Description that follows covers Ethernet signal treatment, 2 Mbit/s signal treatment has beendescribed in previous chapter.

9.1 TREATMENT OF ETHERNET SIGNALS

In the place of V11 or (V28 + RS232) board it is possible to insert Ethernet Module.

In this way the IDU is equipped with the following interfaces:

• 3x electrical interface Ethernet 10/100 BaseT IEEE 802.3

• 16x2 Mbit/s (E1) interface

• total capacity from 2 to 64 Mbit/s

Most important functions are:

• multiplexing of 2 Mbit/s tributaries

• concatenation of 2 Mbit/s streams

• LAPS Link Access Procedure SDH (ITU X.86) for concatenated 2 Mbit/s

• bridge/switch between a local LAN port and the radio LAN port

• MAC switching

• MAC address learning

• MAC address ageing

• Ethernet interface with autonegotiation 10/100, full duplex, half duplex

– Ethernet interface with Flow Control, Back Pressure, MDI/MDX crossover

• network segmentation into bridge

Î Î Î Î Î Î

Î Î Î Î Î Î

Î Î Î Î Î Î

Î Î Î Î Î Î

Î Î Î Î Î Î

Î Î Î Î Î Î

9





• virtual LAN as per IEEE 802.1q (anyone from 0 to 4095 VID for a maximum of 64memory location) (see Fig. 9.2)

• layer 2 QoS, priority management as per IEEE 802.1p (see Fig. 9.2)

• layer 3 ToS/DSCP (see Fig. 9.5)

• packet forwarding

A block diagram of IDU with Ethernet module can be found into Fig. 9.1.

In the IDU with Ethernet module there is a “switch” with 3 external ports and 1internal ports.External ports are electrical Ethernet 10/100BaseT interfaces placed on the front panel. Internalport is connected to radio side stream.

Ethernet traffic coming from external ports goes to internal port radio side. The radio side port

is connected to one or two streams group of concatenated 2 Mbit/s. One stream for capacity upto 16x2 Mbit/s and two streams for capacity of 12 – 16 2 Mbit/s streams, plus other 16x2 Mbit/sstreams in case of maximum capacity.

The concatenated 2 Mbit/s are assembled in a protocol called LAPS similar to HDLC.

In Tx side Ethernet traffic is packet into a protocol called LAPS similar to HDLC. The resultingstream is divided into the used number of 2 Mbit/s streams. The 2 Mbit/s streams are thenmultiplexed, together with 2 Mbit/s arriving from front panel, the resulting stream goes to themodulator, see Fig. 9.1.

In Rx the stream arriving from the demodulator is divided into the 2 Mbit/s streams, then the 2Mbit/s not used into the front panel 2 Mbit/s are concatenated and sent to Ethernet circuits.Resulting stream, after LAPS protocol control, is sent to switch internal port.

9.1.1 2 Mbit/s tributaries

Tributary channels at 2 Mbit/s (E1), connected to relevant connectors into front panel, aremultiplexed as into standard IDU, see previous chapter.

From 0 to 16 tributaries can be selected to be used via SCT/LCT program, all the other available2 Mbit/s are sent to switch internal port.

9.1.2 Electrical Ethernet interface

The electrical Ethernet/Fast Ethernet interfaces are type IEEE 802.3 10/100BaseT with RJ45connector. For input or output signals at RJ45 please refer to User connection chapter. Cablecan be UTP (Unshielded Twisted Pair) or STP (Shielded Twisted Pair) Category 5.

Standard coding:

• Ethernet 10 Mbit/s: Manchester

• Fast Ethernet 100 Mbit/s: MLT–3 ternary

EMC/EMI protection:




CM.89012.I


• Input and output pins are galvanically isolated through a transformer• to reduce EMI every pin at RJ45 connector is terminated even if not used

• two signal lines are equipped with low capacity secondary protection to sustainresiduals of possible electrostatic discharges (ESD).With LCT/SCT program it is possible to activate autonegotiation (speed/duplex/flowcontrol) on 10/100BaseT interface.

9.1.3 Front panel LEDs of Ethernet ports

There are 2 Leds for any Ethernet interface:

• DUPLEX: color green, On = full duplex, OFF = half duplex

• LINK/ACT: color green, ON = link up without activity, OFF = link down, BLINKING = linkwith activity on Rx and Tx.

9.1.4 Bridge/switch function

A radio link equipped with Ethernet module can operate like a bridge/switch between two or moreseparated LANs with the following advantags:

• to connect two separated LANs at a distance even greater than the maximum limits of

2.5 km (for Ethernet)

• to connect two LANs via radio within a complex digital network

• to keep separated the traffic into two LANs towards MAC filtering to get a total trafficgreater than traffic in a single LAN.

The bridge realized into Ethernet module is a transparent bridge (IEEE 802.1 part D) into thesame Vlan described by VLAN Configuration Table.

The bridge works at data link level, Layer 2 of OSI pile, and leave untouched Layer 3.

The bridge takes care to sendo traffic from a local LAN, to remote LAN.. Routing is only on thebasic of Level 2 addresses, sublevel MAC.

The operation of bridge is the following:

• when a bridge interface receives a MAC frame, the bridge on the basis of destinationaddress, decides which LAN to send it

• if destination address is on originating LAN the frame is descarded

• if destination address is a known address (towards address learning procedure) andis present into local address table the frame is sent only on destintion LAN (MACswitching)

• otherwise the frame is sent to all ports with the same VLAN ID (flooding).

A bridge is very different from a repeater, which copies slavishly everything that receives froma line on all the others. The bridge, in fact, acquires a frame, analyzes it, reconstruct it and routes





it. The bridge compensates also the different speeds of the interfaces, therefore an input canbe at 100 Mbit/s and output at 10 Mbit/s.

The mechanism is the following:

• from the moment of its activation, the bridge examines all the frames that arrive it fromdifferent LANs, and on these basis it builds its routing tables progressively.In fact, every received frame allows the bridge to know on what LAN the sending stationis located (MAC address learning).

• every frame that arrives to the bridge is rebroadcasted:

– if the bridge has the destination address into the routing table, sends the frameonly into the corresponding LAN

– otherwise the frame is sent to all the LANs except the originating (flooding)

– as soon as the bridge increases its knowledge of different machines, theretransmission becomes more and more selective (and therefore more efficient)

• the routing tables are updated every some minutes (programmable), removingaddresses not alive in the last period (so, if a machine is moved, within a few minuteit is addressed correctly) (MAC address ageing).

The whole process of bridging is restricted to the ports which are members of the same Vlan asdescribed into Vlan Configuration Table.

9.1.5 Ethernet Full Duplex function

The first realizations of the Ethernet network were on coaxial cable with the 10Base5 standard.

According to this standard Ethernet interfaces (e.g. PC) are connected to the coaxial cable inparallel and are normally in receiving mode. Only one PC, at a certain time, transmits on thecable, the others are receiving, so this is half duplex mode, and only one PC uses the recivedmessage.

Then the coaxial cable was progressively replaced by the pairs cable Unshielded Twisted Pair(UTP) as per 10BaseT standard. Normally there are four pairs into UTP Cat5 cable but two pairsare used with 10BaseT, one for Tx one for Rx. Into 10Base5 and 10BaseT standards, networkprotocols are the same the difference lays into the electrical interface. UTP cable is connectedpoint to point betwen a hub and a Ethernet interface. Network structure is a star where the server

is connected to a hub and from this a UTP cable is laid down for each Ethernet interface starts.The further step is to replace the hub with a more powerful equipment, e.g. a switch. In this caseit is possible to activate transmission on both pairs at the same time, on one twisted pair for onedirection, on the other pair for opposite direction. Thus we obtain full duplex transmission onUTP.

Activating full duplex transmission it is possible to obtain a theoretical increase of performanceof nearly 100%. Full duplex mode can be activated into 10/100BaseT interfaces manually or withautonegotiation 100BaseFx operates always into full duplex mode.




CM.89012.I


9.1.6 Link Loss Forwarding

Link Loss Forwarding (LLF) is an alarm status of ethernet interface.

LLF can be enabled or disabled. If LLF is enabled an US radio alarm condition will generate thealarm status of Ethernet interface blocking any transmission to it. LLF can be enabled for each3 ports at front panel. With LLF enabled the equipment connected (routers, switches so on) canbe notified that radio link is not available and can temporarerly reroute the traffic.

9.1.7 MDI/MDIX cross–over

The Ethernet electrical interface can be defined by SCT program as MDI or MDIX to cross–overbetween pairs so that external cross–over cable is not required.

9.1.8 VLAN functionality

LIM Ethernet module works with IEEE 802.1q and 802.1p tag for VLANs and QoS see Fig. 9.2.

The virtual LAN (VLAN) are logical separated subnets so that all the stations, into VLAN, seemto be into the same physical LAN segment even if they are geographically separated.

The VLAN are used to separate traffic on the same physical LAN too. Station operating on thesame physical LAN but on different VLAN work in separated mode thus they do not sharebroadcast and multicast messages. This results in a reduction of broadcast generated traffic andabove all we get more security thanks to network separation.

Tag position and structure are shown into Fig. 9.2.

Tag is made up with:

• a fixed word of 2 bytes

• 3 bits for priority according 802.1p

• 1 fixed bit

• 12 bits VLAN identifier (VLAN ID) according 802.1q.Switch crossconnections are based on Vlan Configuration Table where input and output portsor only output ports should be defined for any used VID.

Vlan Configuration Table has 64 position for Vlan ID range from 1 to 4095.

9.1.9 Switch organized by port

The switch can be organized on port basis treating both Tagged and Untagged packets in thesame way.





For each input port it is possible to define where to route the incoming traffic; one or more of the3 other ports can be Enabled to exit the incoming traffic. It is possible, also, to route back theincoming traffic into the same port. This type of connection are monodirectional. For adibirectional connection between a generic Lan A and Lan B it is necessary to set the connectionfrom Lan A to Lan B and from Lan B to Lan A.

The IDU with Ethernet module has 3 physical ports and one internal port, radio side. The internalswitch can connect two or more ports together.

Then MAC address bridging rules will be applied to this packet. It is possible to select that apacket follows the description of Vlan Configuration Table for its Vlan ID.

Another selection is to follow only Vlan Configuration Table.

Packets can exit from a port as Unmodified or all Tagged either all Untagged. Unteggad packets

will take default tags.

For output operations there are 3 selections:

• Unmodified: tagged packets keep their tag. Untagged packets remain untagged

• Tagged: all the packets will exit tagged, tagged packets keep their tag, untaggedpackets take Default VID of incoming port.

• Untagged: all the packets will exit untagged.

9.1.10 Switch organized by VLAN ID

Vlan Configuration Table

Vlan Configuration Table defines a list of Vlan ID, For any Vlan ID some ports are members ofVlan others are not members. Ports members of a Vlan are allowed to receive and send packetswith that Vlan. Switch dinamically assignes packets to the output port according their VLAN ID.

Packets aren’t sent out to that port unless they belong to one of the Vlan of which the port is amember.

A port can be a member of a Vlan or many Vlan.

A port can be a member from 1 to 64 Vlans but tagged packets are dropped if their input port

is not a member of packet’s Vlan.After the control of packet and port Vlan membership MAC address bridging rules will be appliedto this packet.

Ingress Filtering Check

This is a process to check an incoming packet to compare its Valn ID to input port’s Vlanmembership. With Ingress Filtering Check it is possible to permit only to tagged packets to enterthe switch. If the port is not member of the Vlan n. XX all the incoming packets with Vlan ID XXwill be dropped.




CM.89012.I


There are 3 option into Ingress Filtering Check to manage incoming packets:• Disable: all Tagged and Untagged packets can transit into the switch following setting

of swicth organized by port.

• Fallback: Untagged frames follow the rules of switch organized by port, Tagged frameswith Vlan ID described into the Vlan Configuration Table follow the rules of the table,Tagged frames with Vlan ID not described into the Vlan Configuration Table follow therules of switch organized by port.

• Secure: Untagged frames cannot enter the switch, Tagged frames with Vlan IDdescribed into the Vlan Configuration Table follow the rules of the table, Tagged frameswith Vlan ID not described into the Vlan Configuration Table cannot enter the switch.

Operations at the input. At the input port the packet is received and a switching decision mustbe made. The switch analyse the Vlan ID (if present) and decides whether and where to forwardthe frame. If the received packet is untagged, the switch sends the packet to the port specifiedinto incoming port “Lan per port” settings. If the packet is tagged the switch check the other 3destination ports to find at least one with the same Vlan ID and put the packet into output portqueue. If the Vlan ID is not listed into Vlan Configuration Table the switch sends the packet tothe port specified into incoming port “Lan per port” settings.

Then MAC address bridging rules will be applied to this packet.

Operations at the output. For each output port there are 3 selections for outgoing packets.

• Disable output port

• Enable unchanged: tagged packets keep their tag. Untagged packets remain

untagged.

• Enable tagged: all the packets will exit tagged with Vlan ID specified into VlanConfiguration Table, tagged packets keep their tag, untagged packets take Default VIDof incoming port.

• Untagged: all the packets will exit untagged.

9.1.11 Layer 2, Priority function, QoS, 802.1p

Some services as voice overIP and videoconference have some time limits to work properly. Asolution is to increase the priority of time sensitive packets. In this case random crowding coming

from other services affects the delay of prioritized packets a lot less.Into LIM Ethernet module different priority of incoming packets is managed using Tag definedinto IEEE 802.1p (see Fig. 9.2).

Every switch output port holds 4 output queues: queue 4 has highest priority, queue 0 has thelowest priority (see Fig. 9.3).

Priority can be organized by incoming port or by incoming priority tag:

• Priority by incoming port. For Untagged packets at each input ports it is decided to sendthe packets to one of the 4 queues of output ports defining which is the Default PriorityQueue: Queue = 0, 1, 2, 3. For Tagged packets it is necessary to Disable Priority sothey will go in the same queue of Untagged packets.





• Priority by incoming priority. For tagged packets for each priority tag (3 bits = for 7priority levels) it is possible to define where to send the packets, into Queue from 0 to3. Priority must be enable on 802.1p mode only or IpToS mode only (see nextparagraph) or first check 802.1p mode and IpToS mode either first check IpToS modeonly (see next paragraph) or first check 802.1p mode and IpToS mode either first checkIpToS mode and then 808.1q. For untagged packets the priority is defined only byincoming port.

Outgoing packet policy at output ports can be WFQ (Wait Fair Queue) with fixed proportionaloutput policy 8 packets from Queue 3, 4 from Queue 2, 4 from Queue 1, 1 from Queue 0.

Layer 3, Priority function, QoS, IP–V4 ToS (DSCP)

Only for IP packets it is possible to use incoming Layer 3 ToS (see Fig. 9.4) to prioritize incomingpackets. The 8 bits available can be read as 7 bits of ToS or 6 bits of DSCP as shown in Fig. 9.5.

According priority defined into ToS/DSCP the packet is sent into high priority queue low priorityqueue of output ports.

With SCT/LCT program it is possible to select a different output queue for any ToS/DSCP prioritylevel at each input port.




CM.89012.I


Fig. 9.1 LIM Ethernet 2 Mbit/s block diagram

1 0 / 1 0 0 B a s e T

1 0 / 1 0 0 B a s e T

1 0 / 1 0 0 B a s e T

L A P S

M U X

1 6 x 2

M b i t / s

M U X

1 6 x 2

M b i t / s

CONCATENATED 2 Mbit/s

P D H

r a d i o

PDH RADIO

10/100BaseT 2 Mbit/s

0 – 1 6 x 2

M b i t / s

O n l y f o r 3

2 x 2 M b i t / s v e r s i o n





Fig. 9.2 Tag control into field

Ethernet Layer 2 Header, non–802.1p

Destination Source Type/Length

Ethernet Layer 2 Header, 802.1p

Destination Source Tag Control Info Type/Length

8100 h

2–Bytes 3–Bits 1–Bit 12–Bits

Tagged frame type interpretation

3 bit priorityfield 802.1p Canonical 12–bit 802.1q VLAN Identifier

Ethernet Layer 2 Header, 802.1p

Type = 2 byte (8100)Level 2 priority (802.1p) = 3 bit (value from 0 to 7)Level 2 VLAN (802.1q) = 12 bit (value from 1 to 4095)Canonical form = 1 bit (shows if MAC addresses of current frame are with canonical form: – C = 0 canonical form (MAC with LSB at left) (always into Ethernet 802.3 frames) – C = 1 canonocal form (MAC with MSB ay left) (token ring and some FDDI)

Fig. 9.3 Output queues

Queue 3

Queue 2

Queue 1

Queue 0

Output Port

Input port




CM.89012.I


Fig. 9.4 ToS/DSCP tag position into IP packets

Version TOS Total Length

Total Length Flags Fragment Offset

IHL

TTL Protocol ID Header Checksum

Source IP Address

Destination IP Address

Options Padding

Data

4 4 8 16

Fig. 9.5 ToS/DSCP

0 1 2 3 4 5 6 7

MSB LSB

Not used

Not used

DSCP

ToS








10. CHARACTERISTICS OF THEOUTDOOR UNIT

10.1 GENERAL

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

10.2 TECHNICAL SPECIFICATION

• see Tab. 10.1

•

– 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

Ó Ó Ó Ó Ó Ó

Ó Ó Ó Ó Ó Ó

Ó Ó Ó Ó Ó Ó

Ó Ó Ó Ó Ó Ó

Ó Ó Ó Ó Ó Ó

Ó Ó Ó Ó Ó Ó

10

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 GHz15 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 cableinterface side

Signals at the cable interface

QAM modulated carrier

Telemetry

Telemetry carriers

Available loops




CM.89012.I


Tab. 10.1 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)








11. DESCRIPTION OF THE OUTDOORUNIT

11.1 GENERAL

The 1+0 ODU (refer to Fig. 11.1) 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 the

received field strength

• a ground bolt.

The 1+1 hot stand–by version (refer to Fig. 11.2) consist of two 1+0 ODUs mechanically securedto a structure housing the hybrid for the antenna connection.

11.2 TRANSMIT SECTION

Refer to block diagram shown in Fig. 11.3.

The 330 MHz QAM modulated carrier from the cable interface (see chapter 11.4) 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.

Ó Ó Ó Ó Ó Ó

Ó Ó Ó Ó Ó Ó

Ó Ó Ó Ó Ó Ó

Ó Ó Ó Ó Ó Ó

Ó Ó Ó Ó Ó Ó

Ó Ó Ó Ó Ó Ó

11





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 11.5 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.

11.3 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 within

the 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


11.4 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.

11.5 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. 11.6) 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.





11.6 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. 11.4 and Fig. 11.5.

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. 11.1.

Tab. 11.1

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


11.7 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. 11.1 1+0 ODU version

”N”

”BNC”

Ground bolt

Fig. 11.2 1+1 hot stand–by version




CM.89012.I


Fig. 11.3 ODU block diagram

C a b l e

i n t e r f a c e

C a b l e

e q u a l i z .

D C

D C

S t e

p

u p

T

L N A

M M I C

v a r i a b l e b w

( c a p a c i t y

d e p e n d i n g )

A G C

N t y p e

3 3 0

M H z

– 4 8 V

x

P R x m e a s

1 4 0

M H z

1 4 0

M H z

a p p r o x .

7 6 5

M H z

+ 3 . 5 V

+ 6 . 2 t o 8 . 2 V

– 1 2 V

A G C

x

P T x a t t .

c o n t r o l

0 t o 4 0 d B

I F L O

u n i t

M O D 5 . 5 M H z

R E C

1 7 . 5

M H z

D E M

1 7 . 5

M

H z

M U X

D E M U X

3 8 8

k b i t / s

A l a r m

m a n a g

& c o n t r o l

A l m

c o m m

l o o p s

5 . 5 M H z

1 7 . 5

M H z

3 8 8

k b i t / s

I F T x

a n t e n n a

s i d e

I N V

B N C

P R x

m e a s .

c t r l

R F L O

u n i t R

x T x

R F l o o p

c t r l

c t r l

c t r l

R x

T x





Fig. 11.4 1+1 hot stand–by 1 antenna

Antennaside

SW control

Tx side

Rx side

SW control

Tx side

Rx side

Fig. 11.5 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. 11.6 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








12. 24/48 VOLT DC/DC CONVERTERD52089

12.1 GENERAL

The 24/48V DC/DC converter D52089 is a unit which converts the voltage of 24 Vdc in –48 Vdc.

This unit is housed in a subrack 1 RU unit G52004 with two D52089 units (1+1version). For 1+0version the subrack is G52003 with one D52089 unit and the remaining half front panel has a

cover.These subracks have a free air gap for cooling purpose.

The DC/DC converter unit D52089 is shown in Fig. 12.1.

Fig. 12.1 DC/DC converter front coverplate

+ – – +

6,3A250V

M ON 24VdcIN

48VdcOUT2A

ALARM

Green LED CM2 connector

Fuse 6.3 A 24 Vdc input male 3W3 connector

48 Vdc output female 3W3 connector

Ó Ó Ó Ó Ó Ó

Ó Ó Ó Ó Ó Ó

Ó Ó Ó Ó Ó Ó

Ó Ó Ó Ó Ó Ó

Ó Ó Ó Ó Ó Ó

Ó Ó Ó Ó Ó Ó

12





12.2 ENVIRONMENTAL CONDITIONS

• –10° 50° C

• –40° 80° C

• 90% max in the range –5° 30° C

12.3 ELECTRICAL CHARACTERISTICS

• 24 Vdc (20.4 28.8 Vdc floating)

• 52 Vdc

• 4.5 A

• 90 W

• 75 W

• ≤ 200 mVpp

• ETS 300 132–2

• ETS 300 132–2

• ETS 300 132–2

• ETS 300 132–2 (ETR 283)

• ETS 300 132–2

• ETS 300 132–2

• EN 300 086

• EN 60950–1

• – input polarity inversion (fuse) – surge input current (fuse) – continuous short circuit at output with automatic

recovery

Operational range

Storage range

Operational humidity

Vinput

Voutput

Max current in input

Max 24 Vdc consumption

Max 48 Vdc load

Secondary voltage ripple

Surge current (Inrush current)

Conducted immunity

Conducted emission

Short duration voltage transient

Abnormal service voltage

Voltage changes due to the regu-lation of power supply

Electromagnetic compatibility

Safety

Protections against




CM.89012.I


• ON = green led active on input primary voltagepresent

• with relay contact on 9 pin male SUB–DconnectorAlarm off: 8–9 pin open, 7–9 pin closedAlarm on when Vout decreases ≥ 15%: 8–9 pinclosed, 7–9 pin open

• 6.3 A medium time 250 Volt

Fig. 12.2 shows connection from IDU 1+0 AL compact version to 24/48 V converter with cable

F03489.Fig. 12.3 shows connections from IDU 1+1 AL compact version to 24/48 V converter with cablesF03489 and F03278.

Warning: connect only 24 Vdc to primary input 24 Vdc IN.

Warning: power supply from –48 Vdc must be connected directly to ALC IDU.

Visual indication

Alarm (CM2 connector)

Fuse





Fig. 12.2 24/48 V DC/DC converter connections to IDU 1+0

2 5 0 V

M

6 , 3 A

O N

I N

2 4 V d c

2 A O U T

4 8 V d c

A L A R M

+

–

–

+

F 0 3 4 8 9

F u s e 6 . 3 A

2 4 V d c I N

4 8 V

+

–

T r i b . 1 – 2 – 3 – 4

T r i b . 5 – 6 – 7 – 8

P S

L C T

Q 3

U S E R I N / O U T

R

T E S T

A L

G 5 2 0 0 3

W a r n i n g : c o n n e c t o n l y 2 4 V d c

t o p r i m a r y i n p u t 2 4 V d c I N




CM.89012.I


Fig. 12.3 24/48 V DC/DC converter connections to IDU 1+1

2 5 0 V

M

6 , 3 A

O N

I N

2 4 V d c

2 A O U T

4 8 V d c

A L A R M

M 2 5 0 V

6 , 3 A

O N

I N

2 4 V d c

2 A

O U T

4 8 V d c

A L A R M

+

–

–

+

+

–

–

+

2 1

R X

T X

A L

T E S T

R

U S E R I N / O U T

Q 3

L C T

P S 2

P S 1

T r i b . 1 3 – 1 4 – 1 5

– 1 6

T r i b . 5 – 6 – 7 – 8

T r i b . 9 – 1 0 – 1 1

– 1 2

T r i b . 1 – 2 – 3 – 4

2

1

2

1

4 8 V

2

+

–

–

+

4 8 V 1

F 0 3 2 7 8

F 0 3 4 8 9

2 4 V d c I N

2 4 V d c I N

F u s e 6 . 3 A

F u

s e 6 . 3 A

W a r n i n g : c o n n e c t o n l y 2 4 V d c t o

p r i m a r y i n p u t 2 4 V d c I N



















3Section

Installation








13. INSTALLATION AND PROCEDURESFOR ENSURINGELECTROMAGNETICCOMPATIBILITY

13.1 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.

13.2 MECHANICAL INSTALLATION

13.2.1 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.

Î Î Î Î Î Î

Î Î Î Î Î Î

Î Î Î Î Î Î

Î Î Î Î Î Î

Î Î Î Î Î Î

Î Î Î Î Î Î

13





13.3 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. 13.1 shows the characteristics of the cables to be used and the flying connector types.

Tab. 13.1

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


13.4 GROUNDING CONNECTION

Fig. 13.1 and annexed legend show how to perform the grounding connections.

Fig. 13.1

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








14. USER CONNECTIONS

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

User connections are performed through connectors on the IDU front panel modules (seeFig. 14.1). The connectors are the following:

• Trib IN/OUT: 75 or 120 25–pin SUB–D male connector. For SUB–D connector detailsTab. 14.1.

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

• USER IN/OUT: SUB–D male connector. Connector details refer to Tab. 14.6.

• Q3: RJ45 connector. Connector details refer to Tab. 14.2.

• 50 Ohm connector for interconnection to ODU 5.

• 48V: 3 pin SUB–D 3W3 connector for interconnection to battery.

• V11: optional service interface. Connector details in Tab. 14.3.

• V.28: optional service interface. Connector details in Tab. 14.4.

• RS232 PPP: optional management interface. Connector details in Tab. 14.5.

Fig. 14.1 IDU 1+1 standard (2x2/4x2/8x2/16x2 Mbit/s)

2

1

RXTX

AL

TEST

R

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

5. SMA kind: max torque 0.5 Nm

Ó Ó Ó Ó Ó Ó

Ó Ó Ó Ó Ó Ó

Ó Ó Ó Ó Ó Ó

Ó Ó Ó Ó Ó Ó

Ó Ó Ó Ó Ó Ó

Ó Ó Ó Ó Ó Ó

14





14.2 STANDARD VERSION CONNECTORS

Tab. 14.1 Tributary connector pin–out (male 25 pin SUB–D)

Pin 120 Ohm impedance Pin 75 Ohm impedance Note

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

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

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

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

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

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














11 Tributary 4/8/12/16 input (hot wire) 11 Tributary 4/8/12/16 input23 Tributary 4/8/12/16 input (ground) 23 Ground




13 Ground 13 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. 14.2 100BaseT connector pin–out for 10/100BaseT Ethernet connection

Pin Description

1 Tx+

2 Tx–

3 Rx+

4 ––

5 ––

6 Rx– 7 ––

8 ––

Tab. 14.3 Connector pin–out for 64 kbit/s channel – V.11 interface

Pin Description

1 D–V11–Tx

2 D+V11–Tx

3 C–V11–Tx4 C+V11–Tx

5 D–V11–Rx

6 D+V11–Rx

7 C–V11–Rx

8 C+V11–Rx

Tab. 14.4 Connector pin–out – V.28 interface

Pin Description1 RTS

2 TD

3 DTR

4 DSR

5 GND

6 RD

7 CTS

8 DCD





Tab. 14.5 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

Tab. 14.6 User in/out connector pin–out

Pin Description

1 C relay contact

2 NA/NC relay contact

3 User input 01

4 User input 02

5 GND

6 NC

7 User input 03

8 User input 04

9 NC




15. INSTALLATION ONTO THE POLE OFTHE ODU WITH SEPARATEDANTENNA

15.1 INSTALLATION KIT

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

• 1+0 standard version

– antisliding strip (see Fig. 15.1)

– supporting plate plus 60–114 mm pole fixing bracket and relevant nuts and bolts(see Fig. 15.2)

– adapting tools and relevant bolts and nuts for 219 mm pole (see Fig. 15.3)

– antenna side flange, variable as function of RF frequency (see Fig. 15.4)

– support with ODU fast locking mechanism (see Fig. 15.2)

– flexible waveguide trunk for connection to antenna (optional) (see Fig. 15.2)

– kit for ground connection making part of ODU

• 1+0 Band–it version

– band–it strip (see Fig. 15.6) – antenna side flange, variable as function of RF frequency (see Fig. 15.4)




• 1+1 version

– antisliding strip (see Fig. 15.1)

– supporting plate plus pole fixing bracket and relevant nuts and bolts (see Fig. 15.2)

Ó Ó Ó Ó Ó Ó

Ó Ó Ó Ó Ó Ó

Ó Ó Ó Ó Ó Ó

Ó Ó Ó Ó Ó Ó

Ó Ó Ó Ó Ó Ó

Ó Ó Ó Ó Ó Ó

15





– adapting tools and relevant bolts and nuts for 219 mm pole (see Fig. 15.3) – hybrid with ODU fast locking mechanism (see Fig. 15.5)

– flexible waveguide trunk for connection to antenna (optional (see Fig. 15.2)

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

15.2 REQUIRED TOOLS FOR MOUNTING (NOT SUPPLIED)

• N.2 13mm torque wrench or spanner

• N.1 15 mm torque wrench or spanner

• N.1 17 mm torque wrench or spanner

• N.1 3 mm Allen wrench

• N.1 2.5 mm Allen wrench

• N.1 7 mm torque wrench

• Fastening tool UIT19 (Band–it mounting kit only)

15.3 INSTALLATION PROCEDURE

Installation procedure proceeds according to the following steps:

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

• 1+0 Band–it: installation onto the pole of the supporting plate

• 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 standard – Installation onto the pole of the supporting plate

Fig. 15.1 – Mount antislide strip around the pole. The position of the plastic blocks depends onthe position of the supporting plate (see next step)

Fig. 15.2 – 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. 15.2). Bolts and nuts areavailable on the supporting plate. Tightening torque must be 32 Nm.

Warning: As shown in Fig. 15.3 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.

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




CM.89012.I


Fig. 15.4 – 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. 15.1

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

Fig. 15.4 – Fix the antenna side flange to the support with ODU fast locking mechanism. Theflange can be mounted horizontally (as shown in Fig. 15.4) or vertically as function of

convenience.

Fig. 15.5 – Fix the support with ODU fast locking mechanism to the supporting plate making useof available bolts and nuts. Fig. 15.5 shows three possible positions. Tightening torque must be18 Nm.

1+0 Band–it

In case of 1+0 ODU installation, a band–it pole mounting kit can be used: through slots (seeFig. 15.6) on the supporting plate two metallic bands secure the plate on the pole by means ofclips (use Band–it fastening tool). Band characteristics are:

• thickness 0.76 mm

• width 19 mm

• steel stainless strip AISI 201/304 (3/4”)

• clips stainless steel AISI 201/304 (3/4”)

Fig. 15.4 – 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 (see Tab. 15.1).

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

Fig. 15.1 – Mount antislide strip around the pole. The position of the plastic blocks depends onthe position of the supporting plate (see next step)

Fig. 15.2 – 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. 15.2). Bolts and nuts areavailable on the supporting plate kit. Tightening torque must be 32 Nm.

Fig. 15.7 – 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. 15.2




Warning: It is advisable to shape the waveguide flexible trunk, connecting ODU flange withantenna flange as shown in Fig. 15.10. 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. 15.9.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. 15.9) to antenna side flange ( see Fig. 15.4 – 1+0 version)or hybrid side flange (see Fig. 15.7 – 1+1 version).

Note: For 1+0 version the ODU can assume positions of Fig. 15.8 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. 15.4 – 1+0 version or Fig. 15.7 – 1+1 version)and ODU body reference tooth (see detail Fig. 15.9)

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. 15.4 – 1+0 versionor Fig. 15.7 – 1+1 version). Tightening torque must be 6 Nm.

Final assembly of 1+1 version is shown in Fig. 15.10.

15.4 GROUNDING

The ODU must be connected to ground making reference to details of Fig. 15.11.




CM.89012.I


Fig. 15.1

Antisliding stripPlastic blocks

7 mm spanner orPhillips screwdriver





Fig. 15.2 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. 15.3 Adapting kit for 219 mm pole





Fig. 15.4 Mounting possible position

Flexible waveguide trunk orrigid angular waveguide

Antenna side flange

Support with ODU fastlocking mechanism

Reference tooth

Position of antennaside flange

Reference tooth

1

1

13 mm wrench6 Nm torque

3 mm Allen key




CM.89012.I


Fig. 15.5

13 mm wrench(18 Nm torque)





Fig. 15.6 Band–it pole mounting




CM.89012.I


Fig. 15.7

Use 13 mm wrench(18 Nm torque)

Reference toothReference tooth

Hybrid with ODU fastlocking mechanism

1

1

RT1 RT2





Fig. 15.8 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




CM.89012.I


Fig. 15.9 ODU body reference tooth

”N”

”BNC”

Ground bolt

ODU side flange

Reference tooth

O–ring





Fig. 15.10 Final ODU assembly of 1+1 version




CM.89012.I


Fig. 15.11 ODU grounding

1

2

4

3

5

1. Bolt

2. Spring washer

3. Flat washer

4. Earth cable collar

5. Flat washer

13 mm torque wrench(6 Nm torque)








16. INSTALLATION ONTO THE WALLOF THE ODU WITH SEPARATEDANTENNA



• 1+0 version

– wall supporting plate with additional contact surface extension plates (see

Fig. 16.1)

– antenna side flange, variable as function of RF frequency (see Fig. 16.2)




• 1+1 version

– supporting plate with additional contact surface extension tools (see Fig. 16.1)

– hybrid with ODU fast locking mechanism (see Fig. 16.4)

– flexible waveguide trunk for connection to antenna (optional (see Fig. 16.2) – kit for ground connection making part of the two ODUs.

Ó Ó Ó Ó Ó Ó

Ó Ó Ó Ó Ó Ó

Ó Ó Ó Ó Ó Ó

Ó Ó Ó Ó Ó Ó

Ó Ó Ó Ó Ó Ó

Ó Ó Ó Ó Ó Ó

16






• 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. 16.1 – Fix on the supporting plate the two supplied extension plates to increase the wallcontact surface.

Fig. 16.1 – Secure the supporting plate on the wall using the more suitable screws.

Fig. 16.2 – Fix the flexible waveguide to the antenna side flange. Four fixing screws are available

the dimensions of which depend on the waveguide type. Tighten progressively and alternativelythe four screws with the following torque:

Tab. 16.1







CM.89012.I


Fig. 16.2 – Fix the antenna side flange to the support with ODU fast locking mechanism. Theflange can be mounted horizontally (as shown in Fig. 16.2) or vertically as function ofconvenience.

Fig. 16.3 – Fix the support with ODU fast locking mechanism to the supporting plate making useof available bolts and nuts. Fig. 16.3 shows three possible positions. Tightening torque must be18 Nm.

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

Fig. 16.1 – Fix on the supporting plate the two supplied extension plates to increase the wallcontact surface.

Fig. 16.1 – Secure the supporting plate on the wall using the more suitable screws.Fig. 16.4 – 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. 16.2

Frequencies Screw Tool Torquefrom 18 to 38 GHz Allen screw M3 Allen key 2.5 mm 1 Nm


Warning: It is advisable to shape the waveguide flexible trunk, connecting ODU flange withantenna flange as shown in Fig. 16.7 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. type

RHODOSIL PATE 4 to the O–ring of Fig. 16.6.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. 16.6) to antenna side flange ( see Fig. 16.2 – 1+0 version)or hybrid side flange (see Fig. 16.4 – 1+1 version).

Note: For 1+0 version the ODU can assume positions of Fig. 16.5 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. 16.2 – 1+0 version or Fig. 16.4 – 1+1 version)and ODU body reference tooth (see detail Fig. 16.6)

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. 16.2 – 1+0 versionor Fig. 16.4 – 1+1 version). Tightening torque must be 6 Nm.

Final assembly of 1+1 version is shown in Fig. 16.7.

16.4 GROUNDING

The ODU must be connected to ground making reference to details of Fig. 16.8.




CM.89012.I


Fig. 16.1 Wall supporting plate

Extension plate

Supporting plate

M8 bolt and nut

13 mm wrench





Fig. 16.2 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. 16.3 Mounting possible positions





Fig. 16.4

Use 13 mm wrench(18 Nm torque)

Reference toothReference tooth

Hybrid with ODU fastlocking mechanism

1

1

RT1 RT2




CM.89012.I


Fig. 16.5 Position of the ODU body depending on the polarisation for 1+0. For 1+1 the

polarisation 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. 16.7 Final ODU assembly of 1+1 version






1

2

4

3

5

1. Bolt

2. Spring washer

3. Flat washer


5. Flat washer




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

17.1 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. 17.1)

– antislide strip (see Fig. 17.2) – pole support system and pole fixing brackets (see Fig. 17.3)

– 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. 17.1)

– antislide strip (see Fig. 17.2)

– pole support system and pole fixing brackets (see Fig. 17.3)

Ó Ó Ó Ó Ó Ó

Ó Ó Ó Ó Ó Ó

Ó Ó Ó Ó Ó Ó

Ó Ó Ó Ó Ó Ó

Ó Ó Ó Ó Ó Ó

Ó Ó Ó Ó Ó Ó

17





• hybrid mechanical body (see Fig. 17.12)• polarization twist disk (see Fig. 17.13)

• 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


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

Fig. 17.1 – 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. 17.2 – Mount antislide strip onto the pole. Place blocks as in Fig. 17.2 following antennaaiming direction. Tighten the strip with screwdriver.

Fig. 17.3 – 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. 17.4.Position the antenna in such a way that bolt in position A or D of Fig. 17.1 cross through holeE of Fig. 17.5. Secure the support system to the pole by means of the pole fixing brackets andrelevant fixing bolts.

Fig. 17.6 – 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.

17.4.2 Installation of ODU

1+0 version

1. Apply silicon grease e.g. RHODOSIL PATE 4” to the O–ring (4) of Fig. 17.9 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. 17.7 depending on the polarization.

3. Position the ODU body near the support system and align ODU side flange to antennaside flange (see Fig. 17.8).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. 17.8) and ODU body reference tooth (seedetail of Fig. 17.9).

4. When alignment is achieved, turn the ODU body clockwise until “clack” is heard andthe ODU rotation stops.Fig. 17.10 and Fig. 17.11 show ODU housing final position for vertical and horizontalpolarization respectively.

5. Secure ODU body on the support system by tightening bolts (1) of Fig. 17.8.





1+1 version

Fig. 17.12 – 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 position

of 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. 17.1




Fig. 17.13 – Fix hybrid to support system with four bolts (1) taking care of RT1/RT2 positionshown by labels of Fig. 17.13. Tighten progressively and alternatively four bolts (1).

17.4.3 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. 17.9 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. 17.7 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. 17.8). 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. 17.8) and ODU bodyreference tooth (see detail of Fig. 17.9).

4. When alignment is achieved, turn the ODU body clockwise until “clack” is heard andthe ODU rotation stops.Fig. 17.10 and Fig. 17.11 show ODU housing final position for vertical and horizontalpolarization respectively for 1+0 version.Fig. 17.14 shows ODU housing final position for 1+1 version.

5. Secure ODU body on the support system by tightening bolts (1) of Fig. 17.8.




CM.89012.I


17.5 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. 17.15, onlyafter having loosen the nuts (7), (8), (9), (10) ofFig. 17.16.

• ± 15° operating on vertical adjustment worm screw (2)shown in Fig. 17.15 only after having loosen nuts (1),(2), (11) of Fig. 17.16 and (4) of Fig. 17.15.

For adjustment from 0° to +30° extract nut (1) Fig. 17.16and position it in hole (4), extract nut (2) Fig. 17.16 andposition it in hole (6). Operate on vertical adjustmentworm screw (2) after having loosen nuts (1), (2), (11) ofFig. 17.16 and (4) of Fig. 17.15.

For adjustment from 0° to –30° extract nut (1) ofFig. 17.16 and position it in hole (3), extract nut (2) ofFig. 17.16 and position it in hole (5). Operate on verticaladjustment worm screw (2) after having loosen nuts (1),(2), (11) of Fig. 17.16 and (4) of Fig. 17.15.

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. 17.16 and (4) of Fig. 17.15 for vertical adjustment and the fournuts (7), (8), (9), (10) of Fig. 17.16 for horizontal adjustment. Tighten with 15 mm wrench and32 Nm torque.

17.6 GROUNDING

See Fig. 17.17.

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

Horizontal

vertical





Fig. 17.1

A

B C

D D

A B

C

A

B

C 1

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. 17.2 Antislide strip

1

2

1. Steel belt

2. Plastic blocks





Fig. 17.3 Support mount on pole

2

3Antenna aiming direction


1

3

1

1. Pole fixing brackets

2. Tooth

3. Bolt

4. Pole support system

3

3 3

3




CM.89012.I


Fig. 17.4

1

Antenna aiming direction

1. Tooth





Fig. 17.5

E




CM.89012.I


Fig. 17.6 Antenna installation on pole support

DA

B C


A, B, C, D Bolt slots





Fig. 17.7 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


Fi . 17.8 Su ort s stem for ODU housin and reference tooth in evidence

1

1

1

H

H

H

H

HH

HH

H: Reference tooth


1






”N”

”BNC”

Ground bolt

ODU side flange

Reference tooth

O–ring




CM.89012.I


Fig. 17.10 ODU housing final position for vertical polarization

30°





Fig. 17.11 ODU housing final position for horizontal polarization

30°

30°




CM.89012.I


Fig. 17.12 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. 17.13 Hybrid mount on pole support

2

1

1

1. Bolts

2. Spring washer

13 mm wrench

18 Nm torque

RT2

RT1




CM.89012.I


Fig. 17.14 ODU housing final position for 1+1 version





Fig. 17.15 Vertical and horizontal adjustments

2

1

3

4

1. Marker2. Vertical adjustment

3. Horizontal adjustment

4. Bolt


13 mm wrench

13 mm wrench




CM.89012.I


Fig. 17.16 Antenna aiming block

2

13

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

43

5

1. Bolt

2. Spring washer

3. Flat washer


5. Flat washer




18. INSTALLATION ONTO THE POLE OFTHE ODU WITH INTEGRATEDANTENNA (KIT V32307, V32308,V32309)

18.1 FOREWORD

The description concerns pole mounting of ODU, in 1+0 and 1+1 version, using followinginstallation kits:

– for ODU with frequency from 10 to 13 GHz



Differences regard the dimensions and the presence of the centring ring (see Fig. 18.1):

– centring ring for antenna flange from 10 to 13 GHz

– centring ring for antenna flange from 15 to 38 GHz

– no centring ring (and relevant screws).


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

Ó Ó Ó Ó Ó Ó

Ó Ó Ó Ó Ó Ó

Ó Ó Ó Ó Ó Ó

Ó Ó Ó Ó Ó Ó

Ó Ó Ó Ó Ó Ó

Ó Ó Ó Ó Ó Ó

18

V32307

V32308

V32309

V32307

V32308

V32309





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

– hybrid and relevant screws

– polarization twist disk and relevant screws

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






• N.1 13 mm spanner

• N.2 17 mm spanner.




CM.89012.I



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 structure5. 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

5. installation of hybrid

6. installation of ODUs

7. antenna aiming

8. ODU grounding.

18.5 1+0 MOUNTING PROCEDURES

18.5.1 Setting antenna polarization

Fig. 18.1 – 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 (torque = 1Nm).





18.5.2 Installation of the centring ring on the antenna

Fig. 18.1 – 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, torque = 2Nm) .

18.5.3 Installation of 1+0 ODU support

Fig. 18.1 – Mount the support onto assembled structure (pole support system plus antenna)using the four 6 mm Allen screws (use 6 mm Allen wrench, torque = 18Nm). Two of the fourscrews, diagonally opposed, must be mounted with the two bushes around.

18.5.4 Installation onto the pole of the assembled structure

Fig. 18.1 – Mount the assembled structure on the pole using the two pole fixing brackets andthe four 17 mm screws (use 17 mm spanner, torque = 13Nm); the heads of the screws areinserted on the antenna side, the four nuts and the springs between nut and brackets are

inserted on bracket side.

18.5.5 Installation of ODU (on 1+0 support)

Fig. 18.2 – Apply silicon grease (e.g. RHODOSIL PATE 4”) on the O–ring by protecting fingerswith gloves.

Fig. 18.3 – 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. 18.4) and reference tooth on the ODU body.

Fig. 18.5 – 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. 18.4 – When ODU positioning is over, secure ODU body on the support by tightening bolts(use 17mm spanner, torque = 6Nm).




CM.89012.I


18.5.6 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. 18.6 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. 18.6 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.

18.5.7 ODU grounding

ODU grounding is achieved with:

• M8 screw without washers

• M6 screw with washer

as shown in Fig. 18.7.

18.6 1+1 MOUNTING PROCEDURES

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

18.6.1 Installation of Hybrid

Fig. 18.8 – 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 towards

V 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. 18.1








Fig. 18.9 – 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.

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

For both ODUs.

Fig. 18.2 – Apply silicon grease e.g. RHODOSIL PATE 4” to the O–ring by protecting fingerswith gloves.

Fig. 18.3 – 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. 18.10 – 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. 18.4 – 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.




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Fig. 18.1 1+0 pole mounting

Four 13mmscrews

Two bushes

1+0 support

Three 3mm Allen screws(not present in V32309)

Centring ring(not present in V32309)

Antenna






”N”

”BNC”

Ground bolt

ODU wave guide

Reference tooth

O–ring




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Fig. 18.3 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





Fig. 18.4 1+0 support

1

1

2

2

3

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




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Fig. 18.5 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





Fig. 18.6 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




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1

2

43

5

1. Bolt

2. Spring washer

3. Flat washer


5. Flat washer





Fig. 18.8 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




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Fig. 18.9 Hybrid installation





Fig. 18.10 1+1 ODUs installation




19. INSTALLATION ONTO THE POLE OFTHE 4 GHz ODU WITH SEPARATEDANTENNA (KIT V32323)


1+0 version

• Anti–sliding bracket• ODU pole support and relevant screws

1+0 version

• Anti–sliding bracket

• ODU pole support and relevant screws

• hybrid and relevant screws

• Hybrid–ODU connecting cables




• N.1 17 mm spanner.

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Installation procedure is listed below:

• 1+0/1+1 version: pole installation of the support

• 1+1 version: installation of the hybrid on the support

• installation of the ODU on the support

• ODU grounding and connection of the cables to the hybrid and antenna

1+0/1+1 version: pole installation of the support

Fig. 19.1 – Install anti–sliding device (1) around the pole. The position of the plastic blocksdepends on the position of the support (2) and of the relevant hooking pin (3).

Hook the support to the plastic blocks by means of the hooking pin. Insert to the four screws(4) in the relevant holes, set the two brackets (5) and clamp them around the pole tightening thefour nuts (6) (tightening torque = 32 Nm).

Cover the projecting bits of the screws using the relevant red covers (7).

The two holes (8) house the two tightening screws of the hybrid (only for 1+1 version).

1+1 version: hybrid installation on the support

Fig. 19.2 – Set the hybrid (1) on the support (2) in such a way that the connectors are downwardand that the holes on the lower side of the hybrid match with the corresponding holes (8) of theFig. 19.1.

Insert the two screws (3) (tightening torque = 7.3 Nm) and tighten the hybrid to the support.

ODU installation on the support

Locate the part of the support more suitable for the installation of the ODU: both the parts canbe used (1+0 version).

Fig. 19.2 – Locate the four slots (4) on the support (2).

Fig. 19.3 – Keeping the knob of the ODU1 downward, partially screw the two screws (2) into thetwo upper holes of the ODU, on N connector side.

Hook the heads of the two screws (2) of the Fig. 19.3 into the slots (4) of the Fig. 19.2.

Insert also the remaining screws (2) into the holes (3).

Tighten all the four screws (2) (tightening torque = 7.3 Nm).

Put the sun–cover (5) over the ODU (1) and fix it to the knob of the ODU by means of the suppliedstrip.

In case of 1+1 version, repeat the whole procedure for the second ODU.




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ODU grounding and connection of the cables to hybrid and antenna

Fig. 19.4 – Tighten the grounding cable of each ODU by means of grounding bolt (1) (tighteningtorque = 7.3 Nm) and the relevant washer. For the connection of the RF cable follow the labelon the bottom of the hybrid: ODU1 (RT1) is that connected to RIM1 of IDU, ODU 2 (RT2) is thatconnected to RIM2 of IDU.

Fig. 19.1 Pole installation of the support

4

4

4

4

8

2

3

6

7

6

7

5

5

1





Fig. 19.2 Installation of the hybrid on the pole support (only for 1+1 version)

2

3

1

4

4




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Fig. 19.3 Installation of the ODU on the support

5

23

1





Fig. 19.4 ODU grounding and connection of the cables to hybrid and antenna

1

1

RT2

RT1















4Section

Line–up








20. LINE–UP OF THE RADIO HOP

20.1 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.

20.1.1 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. 20.1.

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

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20.1.2 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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20.1.3 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. 20.1 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




21. LINE–UP OF ETHERNET TRAFFIC(FOR IDU WITH V12252 ETHERNETMODULE ONLY)

21.1 GENERAL

This paragraph deals with line–up of V12252 Ethernet module with details of SCT/LCT programrelated only to Ethernet application.

Assuming that the radio link is already in service, with correct frequency, output power andcorrect antenna alignment, the line up procedure for different kinds of connection set up of aradio link AL, equipped with LIM Ethernet/2 Mbit/s module, is hereafter described:

1. Local Lan–1 port to remote Lan–1 port connection LAN per port, see Fig. 21.1

2. Local Lan–1 port to remote Lan–1 port connection with only VLANs

3. 3 to 1 port connections, see Fig. 21.13.Settings here below are intended to be done both into local and remote radio equipment.

21.2 LOCAL LAN–1 PORT TO REMOTE LAN–1 PORT(TRANSPARENT CONNECTION LAN PER PORT)

Settings for Untagged and Tagged Traffic

Fig. 21.1 Local Lan–1 port to remote Lan–1 port connection

Radio

port 1

switch

Lan–1

Radio

port 1

switch

Lan–2

Lan–3

Nx2Mbit/s

Local

Lan–1

Lan–2

Lan–3

Nx2Mbit/s

Remote

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The line–up of Ethernet traffic is made with the help of SCT/LCT program.Please refer to Fig. 21.2. First selection is Ethernet throughput and modulation scheme, in thisexample we select 16 Mbit/s and modulation 16QAM (max throughput and modulation schemedepend on terms of licence provided by Siae Microelettronica).

Select configuration 1+0 or 1+1 according system requirements. Inside LCT, select Tributarywindow. If 2 Mbit/s tributaries are needed, inside the Tributary window it is possible to activatea 2 Mbit/s input/output on the front panel. When the activation of required 2 Mbit/s tributariesis completed, all the others 2 Mbit/s streams are automatically used for the Ethernet traffic. Forinstance with a 8x2 Mbit/s capacity, if we use two 2 Mbit/s the capacity assigned to Ethernetcircuits is automatically set to 6x2 = 12 Mbit/s full duplex.

Fig. 21.2 Selection of Ethernet Throughput

See Fig. 21.3 for General settings for the switch. All the used ports must be Enabled, so enableLan–1 and Internal Port, see Fig. 21.4.

The other ports should be disabled. The correct cable crossover arrangement must be selectedtoo (see Fig. 21.4). At the end of Line–up, enable LLF if needed.




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For Untagged traffic, connections are done with Lan per port selections. Referring to Fig. 21.5incoming traffic at Lan–1 exits at Internal Port and into Fig. 21.7 incoming traffic at Internal Portexits at lan–1 port. This connection are done for all Untagged traffic and all Tagged packets withVlan Id not described into Vlan Configuration Table.

If Vlan Configuration Table is blank all Tagged traffic follows the rules of Lan per port.

Possible selections of Ingress Filtering Check:

1. “Disable 802.1q”: no check of Virtual Lan tag is made and all packets follow Lan perport settings

2. “Fallback”: if Tagged packets have their Vlan Id into Vlan Configuration Table theyfollow the connection described into the table, otherwise they follow the Lan per portsettings as Untagged packets

3. “Secure”: no Untagged packet transits; only Tagged packets with Vlan Id listed intothe table can transit. For all pass configuration, “Disable 802.1” should be selected.With Egress Mode as Unmodified the outgoing packets at Lan–1 port exit Untaggedor Tagged exactly as they were Untagged or Tagged at the incoming port.

Fig. 21.3 Switch general settings

Link LossForwardingHisteresys

Click here for Port mapping andVLAN configuration table

Output policyfor Taggedpackets: Level2 priority, ifused, definedfor all the portsfor incomingpacketsalready Tagged





Fig. 21.4 Lan–1 interface settings




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Fig. 21.5 Vlan settings for Lan–1





Fig. 21.6 Priority setting for Lan–1 and Internal Port

IncomingUntaggedpackets at

Lan–1 are sentinto output partqueue followingthis selection.

In this examplepackets areinserted into

queue 0.

With Priority disabled no check is done into 802.1p priority Tag. All types of packets go intoDefault Priority Queue.




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Fig. 21.7 Vlan settings for Internal Port

Fig. 21.8 Vlan Configuration Table





21.3 LOCAL LAN–1 PORT TO REMOTE LAN–1 PORT (WITHVLANs)

Settings are done to transfer only Tagged traffic within Vlans.

We want that Vlan 701, 702, 710 and 1, 2, 3 can pass into the radio link and all the other Taggedor Untagged packets should be blocked.

The line up of Ethernet module is made with the help of LCT/SCT program. Please refer toFig. 21.2. First selection is Ethernet throughput and modulation scheme, in this example weselect 16 Mbit/s and modulation 16QAM (max throughput and modulation scheme depends onterms of licence provided by Siae Microelettronica). Select configuration 1+0 or 1+1 according

system requirements.

Inside LCT, select tributary window. If 2 Mbit/s tributaries are needed, inside the tributary windowit is possible to activate a 2 Mbit/s input/output on the front panel. When the activation of required2 Mbit/s tributaries is completed, all the others 2 Mbit/s streams are automatically used for theEthernet traffic. for instance with a 16 Mbit/s capacity if we use two 2 Mbit/s the capacityassigned to ethernet circuits is automatically set to 16–2x2 = 12 Mbit/s full duplex.

See Fig. 21.3 for general settings for the switch. All the used ports must be enabled, so enableLan–1 and Internal Port, see Fig. 21.4. The other ports should be disabled. The correct Cablecrossover arrangement must be selected too. Enable LLF if needed, only at the end of line up.

Vlan settings for Lan–1 and Internal Port should be like in Fig. 21.9 with Ingress Filtering Checkas “Secure” and Engress Mode as “Tagged”. With this setting only Tagged packets with Vlan

ID listed into the Vlan Configuration Table can transit. All Untagged packets are blocked at theincoming port and outgoing Tagged packets don’t change.

A packet with Vlan ID XX can enter into the switch only if Incoming Port (Ingress port) is amember of the Vlan XX, same packet will exit only from ports (Engress Port) which are membersof Vlan XX. Vlan membership is described into Vlan Configuration Table. A port can be memberof no one, one or more Vlans. See Fig. 21.10 for Vlan Configuration Table settings for ourexample.




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Fig. 21.9 Virtual Lan input and output settings at Lan–1 port

Fig. 21.10 Vlan Configuration Table with some Vlans





Tagged incoming packet can be treated with FIFO policy or on the basis of their 802.1p prioritytag and ToS/DSCP value for IP packets. There are 4 queue at each output port. The decisionabout to which output queue to send a packet is defined into Ethernet switch window selectionsfor 802.1p tag. Into Ethernet switch window it is possible to select ToS/DSCP button to openwindow ToS/DSCP, in this window each incoming ToS/DSCP value is associated with an outputqueue so it is possible to change the priority of the incoming packet.

When no info on priority is available, the packet is sent to Default Priority Queue using FIFOpolicy.

Into Lan–1 window select Priority (802.1q), into priority box there are some selections: with“Disable” switch doesn’t look at priority tag; with “802.1p” switch looks at Tag 802.1p only; with“IpToS” for IP packets only switch looks to ToS/DSCP identifier (into IP frame) only; with “802.1p – IpToS” switch looks first to 802.1p tag and secondly to ToS/DSCP, see Fig. 21.12; with“IpToS–802.1p” switch looks first to ToS/DSCP and secondly to Tag 802.1p.

Note: with IpToS switch looks to IP packet and ToS/DSCP doesn’t matter if the packets aretagged with 802.1p or not.

In this example incoming tagged are tagged and it is necessary to transfer the packets with nochange so they must exit from output ports tagged, see Fig. 21.11 and Fig. 21.12.

Fig. 21.11 Add a new Vlan ID to Vlan Configuration Table with output tagged




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Fig. 21.12 Layer 2 and Layer 3 priority management

IncomingUntaggedpackets at

Lan–1 are sentinto output partqueue followingthis selection.

In this examplepackets areinserted into

queue 0.





21.4 3 TO 1 PORT CONNECTIONS

Fig. 21.13 3 to 1 port connections

ALradio

port 1

switch

Lan–1

ALradio

port 1

switch

Lan–2

Lan–3

Nx2

Mbit/s Local

Lan–1

Lan–2

Lan–3

Nx2

Mbit/sRemote

In this example 3 local port must communicate with corresponding remote ports. All the portsshare the same radio channel but traffic originated and directed to Lan1 should be keptseparated from traffic from Lan2 and Lan3 and viceversa.

Lan–1 to Lan–1 connection should transfer tagged packets with Vlan 1, 701, 760 and untagged

packets. Unspecified tagged packets must be stopped. Lan–2 and Lan–3 have the samerequirements. For all connections IP packets with high priority TOS should transferred atminimum delay.

21.5 3 TO 1 PORT CONNECTIONS, SETTINGS FORUNTAGGED TRAFFIC

The line–up of Ethernet traffic is made with the help of LCT/SCT. Please refer to Fig. 21.1.

First selection is Ethernet throughput and modulation scheme, in this example we select 16Mbit/s and modulation 16QAM (max throughput and modulation scheme depend on terms oflicence provided by Siae Microelettronica). Select configuration 1+0 or 1+1 according systemrequirements.

Inside LCT, select Tributary window.

If 2 Mbit/s tributaries are needed, inside the tributary window it is possible to activate a 2 Mbit/sinput/output on the front panel. When the activation of required 2 Mbit/s tributaries is completed,all the others 2 Mbit/s streams are automatically used for the Ethernet traffic. For instance witha 8x2 Mbit/s capacity if we use two 2 Mbit/s the capacity assigned to Ethernet circuits isautomatically set to 6x2 = 12 Mbit/s full duplex.




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Vlan Configuration Table will be defined in order to group traffic from Lan–1, Lan–2, Lan–3 toPort1. All the used ports must be Enabled.

Untagged traffic transits only if the selection for Ingress Filtering Check is disabled at each inputport and a separated Vlan for Untagged traffic is set up for each port. See Fig. 21.3, Fig. 21.4,Fig. 21.13, Fig. 21.14 and Fig. 21.15.

Each port of the switch must be associated with a different Default VLAN ID in order to maintainthe traffic coming from different separated LANs, Lan–1 with default VID 3301, Lan–2 withdefault VID 3302, Lan–3 with default VID 3303, for Lan–1 see Fig. 21.15 and Fig. 21.16.

The correct Cable Crossover arrangement must be selected too.

Fig. 21.14 Input and output setting for VLANs at Lan–1 port





Fig. 21.15 Output port properties for VLAN 3301




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Fig. 21.16 Typology 3 to 1, Virtual Lan Configuration

Default VID assigned byuser to each port

Vlan 3301, 3302, 3303 are allowed to exit at Port1with tags (Tagged). Different default Tag’s allow to

keep separate the traffic from Lan1, Lan2 andLan3 exiting at Port 1. At the remote end the traffic

is split and forwarded from Port1 to Lan1, Lan 2and Lan3 without Tag to preserve the original

format.

With the above settings inside the VLAN configuration Table only Untagged traffic is forwardedaccross the bridge.

The same settings should be done inside the remote equipment. The above example showsthe Virtual Lan Configuration Table in case of a link carrying the traffic of 3 independent LAN’sconnected to Lan–1, Lan–2, Lan–3, which is split at the remote end among the outgoing Lan–1,Lan–2, Lan–3 ports, while using a common radio link.

To prioritize some IP packets with high ToS/DSCP value it is possible to open PToS/DSCPwindow from Ethernet switch window and select the values of ToS for which the packet is sentto high priority Queue, see Fig. 21.17.





Fig. 21.17 Output Queue selection on the basis of TOS/DSCP priority

TOS value description DSCP value description

Packetswith AF43

prioritylevel willgo into

Queue 3 atall ports

AF43 now goes to Queue 3, with thisbutton AF43 will go to Queue 2

21.6 3 TO 1 PORT CONNECTIONS, SETTINGS FOR TAGGEDAND UNTAGGED TRAFFIC

If we want VLAN with Tag 701, 702 and 703 to transit between Lan–1 and Port–1 it is necessaryto define Port 1 and Lan 1 as members of VLAN1, 701, 760 (see Fig. 21.18 for VLAN 701 and

do the same for VLAN1, 760).

The VLAN Configuration Table will look like Fig. 21.19.

For Lan–2 and Lan–3 we cannot use the same Vlan if we want to maintain traffic from Lan 1,2, 3 separated. We must change the number of incoming Vlan for instance of 1, 701, 760 use2001, 2701, 2760 for Lan–2 and 3001, 3701, 3760 for Lan–3. Connected equipment to Lan–2port should be reprogrammed to use Vlan 2001, 2701, 2760.

Connected equipment to Lan–3 port should be reprogrammed to use Vlan 3001, 3701, 3760.

To prioritize Ip packets with high ToS/DSCP value it is possible to open PToS/DSCP window fromEthernet switch window and select the values of ToS for which the packet is sent to high priorityQueue 3, see Fig. 21.17. The same should be done inside the remote equipment.




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Fig. 21.18 Output properties of VLAN 701





Fig. 21.19 Typology 3 to 1, Virtual Lan Configuration Table with Vlan

21.7 3 TO 1 CONNECTIONS: EXAMPLES OF PRIORITYMANAGEMENT

Example 1: To assign to Lan–1 and Lan–3 low priority and to Lan–2 high priority, while wantingTagged and Untagged to be treated in a fair manner on each queue do as follow: select PriorityDisable for Lan–1, Lan–2 and Lan–3; select Default Priority Queue equal to Queue 0 for lan–1and Lan–3 (see Fig. 21.6). Select Default Priority Queue equal to Queue 3 for Lan–2 (as inFig. 21.20).

Outgoing Untagged packets will take priority tag defined into input port, in this case 0. Taggedframes keep their tag.

Example 2: Wanting tagged frames to be treated according their actual priority and untaggedpackets with low priority, all inputs should be configured as in Fig. 21.21.

Layer 2 Priority assignment is not modified if inside the second folder of the Lan–X (1, 2, 3)configuration window Untagged Frame Egress Mode = Unmodified is selected as in Fig. 21.22.




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Fig. 21.20 Queue selection

Untagged packet arriving to Lan–2 are sent to output port Queues setting of thisfolder. In this example all incoming packets at Lan–2 are inserted into output

Queue 3 of output ports.Input priority: when Disable is not selected, Tagged frame are sent to queue0,1,2,3 to port destination priority value; when Disable is selected for this portswitch uses the Default Priority Queue for Tagged and Untagged frames, and

without really changing Tag into Incoming Tagged frames.





Fig. 21.21 Management of tagged frames according with their priority tag




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Fig. 21.22 Incoming packets at Lan–1 will exit to other ports unchanged according their

incoming status.



















5Section

Maintenance








22. PERIODICAL CHECKS

22.1 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.

22.2 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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23. TROUBLESHOOTING

23.1 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.

23.2 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. 23.1) or alarm messages are displayed by

managers 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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23.2.1 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.

23.2.2 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 ON

the 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 by

a 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. 23.1 IDU front

48V

+ –

Trib. 1–2–3–4

Trib. 5–6–7–8

PSLCTQ3 USER IN/OUT

R

TEST

AL








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

24.1 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.

24.2 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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24.2.1 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 ! Equipment Configuration 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.




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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 system displays the Communication Status window where is pointed out:

– the operation status : upload in progress/completed

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

6. Press OK to finish.

24.2.2 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 Address Configuration Template .

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

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

Equipment .

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 system displays the Communication Status window where is pointed out:

– 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 ! Equipment Configuration 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 port addresses 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.

24.2.3 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 configuration file .

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 New Configuration 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.








25. BACK UP FULL EQUIPMENTCONFIGURATION WITHOUTPOSSIBILITY OF MODIFYING THEPARAMETERS

25.1 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.

25.2 CONFIGURATION UPLOAD

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

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

2. Select “Upload” and then “Backup Full Equipment Configuration”; “Template Selection ” 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 Configuration File ” 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.


25.3 CONFIGURATION DOWNLOAD

Once the spare IDU has been installed proceed as follows:

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

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

successfully.


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















6Section

Programming and supervision








26. PROGRAMMING ANDSUPERVISION

26.1 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 remote

and 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








27. COMPOSITION OF THE INDOORUNIT

27.1 GENERAL

The IDU is offered in the following versions:

• 1+0 compact

• 1+1 compact.

27.2 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 00690073

0076007800790080008100840085008600870088008900900091

16x2 – 75 Ohm – 1+116x2 – 75 Ohm – 1+1EOW

16x2 – 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

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




28. COMPOSITION OF OUTDOOR UNIT

28.1 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 (Compact Version) User Manual - Mn00142e ED07