Siae Microelettronica Alc Manual - Mn00142e-007 6s136g

AL PDH radio systems Compact version

manual

Volume 1/1 MN.00142.E – 007

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 regulations. 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 ed trademarks. OSF Motif is an Open Software Foundation ed trademark. UNIX is a Unix Systems Laboratories ed trademark. INGRES is a Computer Associates ed trademark. Other products cited here in are constructor ed trademarks.

Via Michelangelo Buonarroti, 21 – 20093 Cologno Monzese, Milano – Italy Tel. (+39) 02 27325.1 – Fax (+39) 02 25301505 – e–mail [email protected]

ÎÎÎÎÎÎ ÎÎÎÎÎÎ ÎÎÎÎÎÎ ÎÎÎÎÎÎ ÎÎÎÎÎÎ

Contents

Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1 1

1.

DECLARATION OF CONFORMITY . . . . . . . . . . . . . . . . . . . . . . . . . .

3

2.

FIRST AID FOR ELECTRICAL SHOCK AND SAFETY RULES . .

5

2.1

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

5 5 5

2.2

SAFETY RULES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

7

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

3.

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

4.

13 13

ABBREVIATION LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

15

4.1

15

LIST OF ABBREVIATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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I

Contents

5.

6.

7.

8.

II

SYSTEM PRESENTATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

17

5.1

RADIO SYSTEM OVERVIEW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.1.1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

17 17

5.2

COMPLIANCE WITH INTERNATIONAL STANDARDS . . . . . . . . .

17

5.3

APPLICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

18

5.4

SYSTEM ARCHITECTURE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.4.1 IDU . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.4.2 ODU . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

18 18 19

5.5

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

19 19 19

EQUIPMENT TECHNICAL SPECIFICATIONS . . . . . . . . . . . . . . . . .

23

6.1

TECHNICAL SPECIFICATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

23

CHARACTERISTICS OF THE INDOOR UNIT . . . . . . . . . . . . . . . . .

33

7.1

GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

33

7.2

TRAFFIC INTERFACE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7.2.1 2 Mbit/s interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7.2.2 Ethernet interface (option V12252) . . . . . . . . . . . . .

33 33 34

7.3

SERVICE CHANNEL INTERFACE . . . . . . . . . . . . . . . . . . . . . . . . . . . 7.3.1 V.28 low speed synchronous/asynchronous data . 7.3.2 Alarm interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7.3.3 64 kbit/s contra–directional interface V.11 (optional) 7.3.4 Network Management Interface . . . . . . . . . . . . . . . .

34 34 35 35 35

7.4

MODULATOR/DEMODULATOR . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

36

7.5

CABLE INTERFACE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

36

7.6

AVAILABLE LOOPS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

37

DESCRIPTION OF THE INDOOR UNIT – PDH INTERFACES . . .

39

8.1

39 39

1+0/1+1 IDU VERSIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8.1.1 Line interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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8.1.2 8.1.3 8.2

9.

Radio interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Equipment controller . . . . . . . . . . . . . . . . . . . . . . . . . .

41 42

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

43 44 44 44

DESCRIPTION OF THE INDOOR UNIT – ETHERNET INTERFACES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

55

9.1

TREATMENT OF ETHERNET SIGNALS . . . . . . . . . . . . . . . . . . . . . 9.1.1 2 Mbit/s tributaries . . . . . . . . . . . . . . . . . . . . . . . . . . . 9.1.2 Electrical Ethernet interface . . . . . . . . . . . . . . . . . . . 9.1.3 Front LEDs of Ethernet ports . . . . . . . . . . . . . 9.1.4 Bridge/switch function . . . . . . . . . . . . . . . . . . . . . . . . 9.1.5 Ethernet Full Duplex function . . . . . . . . . . . . . . . . . . 9.1.6 Link Loss Forwarding . . . . . . . . . . . . . . . . . . . . . . . . . 9.1.7 MDI/MDIX cross–over . . . . . . . . . . . . . . . . . . . . . . . . 9.1.8 VLAN functionality . . . . . . . . . . . . . . . . . . . . . . . . . . . 9.1.9 Switch organized by port . . . . . . . . . . . . . . . . . . . . . . 9.1.10 Switch organized by VLAN ID . . . . . . . . . . . . . . . . . . 9.1.11 Layer 2, Priority function, QoS, 802.1p . . . . . . . . . .

55 56 56 57 57 58 59 59 59 59 60 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

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III

Contents

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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

87 87

13. INSTALLATION AND PROCEDURES FOR ENSURING ELECTROMAGNETIC COMPATIBILITY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

89

13.1 GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

89

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

89 89

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

90

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

91

14. 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 SEPARATED ANTENNA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97

IV

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

97

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

98

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

98

15.4 GROUNDING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

100

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Inhaltsverzeichnis

16. INSTALLATION ONTO THE WALL OF THE ODU WITH SEPARATED ANTENNA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113 16.1 INSTALLATION KIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

113

16.2 REQUIRED TOOLS FOR MOUNTING (NOT SUPPLIED) . . . . . .

114

16.3 INSTALLATION PROCEDURE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

114

16.4 GROUNDING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

116

17. INSTALLATION ONTO THE POLE OF THE ODU WITH INTEGRATED ANTENNA (KIT V52191, V52192) . . . . . . . . . . . . . . . . . . . . . . . . . . . 125 17.1 FOREWORD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

125

17.2 INSTALLATION KIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

125

17.3 REQUIRED TOOLS FOR MOUNTING (NOT SUPPLIED) . . . . . .

126

17.4 INSTALLATION PROCEDURE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17.4.1 Installation onto the pole of the system and the antenna . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17.4.2 Installation of ODU . . . . . . . . . . . . . . . . . . . . . . . . . . . 17.4.3 ODU installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

126 127 127 128

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

129

17.6 GROUNDING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

129

18. INSTALLATION ONTO THE POLE OF THE ODU WITH INTEGRATED ANTENNA (KIT V32307, V32308, V32309) . . . . . . . . . . . . . . . . . . . 147 18.1 FOREWORD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

147

18.2 INSTALLATION KIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

147

18.3 REQUIRED TOOLS FOR MOUNTING (NOT SUPPLIED) . . . . . .

148

18.4 INSTALLATION PROCEDURE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

149

18.5 1+0 MOUNTING PROCEDURES . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18.5.1 Setting antenna polarization . . . . . . . . . . . . . . . . . . . 18.5.2 Installation of the centring ring on the antenna . . . 18.5.3 Installation of 1+0 ODU . . . . . . . . . . . . . . . . 18.5.4 Installation onto the pole of the assembled structure 18.5.5 Installation of ODU (on 1+0 ) . . . . . . . . . . . . 18.5.6 Antenna aiming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18.5.7 ODU grounding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

149 149 150 150 150 150 151 151

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

151

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V

Contents

18.6.1 18.6.2

Installation of Hybrid . . . . . . . . . . . . . . . . . . . . . . . . . . Installation of ODUs (on hybrid for 1+1 version) . .

151 152

19. INSTALLATION ONTO THE POLE OF THE 4 GHz ODU WITH SEPARATED ANTENNA (KIT V32323) . . . . . . . . . . . . . . . . . . . . . . .

163

19.1 INSTALLATION KIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19.2 REQUIRED TOOLS FOR MOUNTING (NOT SUPPLIED) . . . . . . 19.3 INSTALLATION PROCEDURE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

163 163 164

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

169 169

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

171

20.1 LINE–UP OF THE RADIO HOP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20.1.1 Antenna alignment and received field measurement 20.1.2 Network element configuration . . . . . . . . . . . . . . . . . 20.1.3 Radio checks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

171 171 172 173

21. LINE–UP OF ETHERNET TRAFFIC (FOR IDU WITH V12252 ETHERNET MODULE ONLY) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 175 21.1 GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21.2 LOCAL LAN–1 PORT TO REMOTE LAN–1 PORT (TRANSPARENT CONNECTION LAN PER PORT) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21.3 LOCAL LAN–1 PORT TO REMOTE LAN–1 PORT (WITH VLANs) 21.4 3 TO 1 PORT CONNECTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21.5 3 TO 1 PORT CONNECTIONS, SETTINGS FOR UNTAGGED TRAFFIC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21.6 3 TO 1 PORT CONNECTIONS, SETTINGS FOR TAGGED AND UNTAGGED TRAFFIC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21.7 3 TO 1 CONNECTIONS: EXAMPLES OF PRIORITY MANAGEMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

VI

175 175 182 186 186 190 192

197 197

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

199

22.1 GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

199

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

199

23. TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

201

23.1 GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23.2 TROUBLESHOOTING PROCEDURE . . . . . . . . . . . . . . . . . . . . . . . . 23.2.1 Loop facilities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23.2.2 Alarm messages processing . . . . . . . . . . . . . . . . . . .

201 201 202 202

24. EQUIPMENT CONFIGURATION /SAVE/. PARAMETER MODIFICATION AND CREATION OF VIRTUAL CONFIGURATIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

205

24.1 SCOPE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24.2 PROCEDURE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24.2.1 General equipment configuration . . . . . . . . . . . . . . . 24.2.2 Addresses and routing table . . . . . . . . . . . . . . . . . . . 24.2.3 Remote Element Table . . . . . . . . . . . . . . . . . . . . . . . .

205 205 206 207 208

25. BACK UP FULL EQUIPMENT CONFIGURATION WITHOUT POSSIBILITY OF MODIFYING THE PARAMETERS . . . . . . . . . . .

211

25.1 SCOPE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25.2 CONFIGURATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25.3 CONFIGURATION . . . . . . . . . . . . . . . . . . . . . . . . . . . .

211 211 212

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

213 213

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

215

26.1 GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

215

Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Composition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

217 217

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

219

27.1 GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

219

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VII

Contents

VIII

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

219

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

221

28.1 GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

221

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ÓÓÓÓÓÓÓÓÓÓÓÓ ÓÓÓÓÓÓÓÓÓÓÓÓ ÓÓÓÓÓÓÓÓÓÓÓÓ ÓÓÓÓÓÓÓÓÓÓÓÓ ÓÓÓÓÓÓÓÓÓÓÓÓ ÓÓÓÓÓÓÓÓÓÓÓÓ ÓÓÓÓÓÓÓÓÓÓÓÓ ÓÓÓÓÓÓÓÓÓÓÓÓ ÓÓÓÓÓÓÓÓÓÓÓÓ ÓÓÓÓÓÓÓÓÓÓÓÓ ÓÓÓÓÓÓÓÓÓÓÓÓ

1

Section

guide

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

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1.

2

TITOLO DEL CAPITOLO

CM.89012.I

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

ÎÎÎÎÎÎ ÎÎÎÎÎÎ ÎÎÎÎÎÎ ÎÎÎÎÎÎ ÎÎÎÎÎÎ ÎÎÎÎÎÎ

1

1.

DECLARATION OF CONFORMITY

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

Digital radio relay system

AL7

•

Digital radio relay system

AL8

•

Digital radio relay system

AL11

•

Digital radio relay system

AL13

•

Digital radio relay system

AL15

•

Digital radio relay system

AL18

•

Digital radio relay system

AL23

•

Digital radio relay system

AL25

•

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) and therefore 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 spectrum Matters (ERM); Electromagnetic Compatibility (EMC) standard for radio equipment and services; Part 4. Specific conditions for fixed radio links and ancillary equipment and services”

•

ETSI EN 301 751 V.1.1. (2002–12): “Fixed Radio Systems; Point–to point equipment and antennas; generic harmonized standard for point–to–point digital fixed radio systems and antennas covering the essential requirements under article 3.2 of the 1999/5/EC Directive”.

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4

TITOLO DEL CAPITOLO

CM.89012.I

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

ÓÓÓÓÓÓ ÓÓÓÓÓÓ ÓÓÓÓÓÓ ÓÓÓÓÓÓ ÓÓÓÓÓÓ ÓÓÓÓÓÓ

2

2.

2.1

FIRST AID FOR ELECTRICAL SHOCK AND SAFETY RULES

FIRST AID FOR ELECTRICAL SHOCK

Do not touch the patient with bare hands until the circuit has been opened. Open the circuit by switching off the line switches. If that is not possible protect yourself with dry material and free 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. suggested procedure 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 be employed while artificial respiration is being applied (in this case there should be at least two persons 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.

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

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CM.89012.I

Tab. 2.1 Step

Description

Figure

1

Lay the patient on his back with his arms parallel to the body. If the patient is laying on an inclined plane, make sure that his stomach is slightly lower than his chest. Open the patients mouth and check that there is no foreign matter in mouth (dentures, chewing gum, etc.).

2

Kneel beside the patient level with his head. Put an hand under the patient’s head and one under his neck. Lift the patient’s head and let it recline backwards as far as possible.

6

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 together. While performing these operations take a good supply of oxygen by taking deep breaths with your mouth open.

4

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

5

While performing these operations observe if the patient’s chest rises. If not it is possible that his nose is blocked: in that case open the patient’s mouth as much as possible by pressing on his chin with your hand, place your lips around his mouth and blow into his oral cavity. Observe if the patient’s chest heaves. This second method can be used instead of the first even when the patient’s nose is not obstructed, provided his nose is kept closed by pressing the nostrils together using the hand you were holding his head with. The patient’s head must be kept sloping backwards as much 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 has regained conscious–ness, or until a doctor has ascertained his death.

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

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TITOLO DEL CAPITOLO

CM.89012.I

CM.89012.I

2.2

SAFETY RULES

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

Fig. 2.1

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

Band

Elasticized

Fig. 2.2

Fig. 2.3

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

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CM.89012.I

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

LASER

Fig. 2.4

8

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

ÓÓÓÓÓÓ ÓÓÓÓÓÓ ÓÓÓÓÓÓ PURPOSE AND STRUCTURE OF THE ÓÓÓÓÓÓ MANUAL ÓÓÓÓÓÓ ÓÓÓÓÓÓ

3

3.

3.1

PURPOSE OF THE MANUAL

The purpose of this manual consists in providing the with information which allows to operate 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–on line.

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

TITOLO DEL CAPITOLO

CM.89012.I

STRUCTURE OF THE MANUAL

The manual is subdivided into sections each of them developing a specific topic entitling the section. Each section consists of a set of chapters, enlarging the main subject master.

Section 1 – Guide It provides the information about the main safety rules and expounds the purpose and the structure of the manual.

Section 2 – Description and specifications It traces the broad line of equipment operation and lists the main technical characteristics of the whole 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 electrical connections. 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 to identify the faulty unit and to re–establish the operation after its replacement with a spare one.

10

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CM.89012.I

CM.89012.I

Section 6 – Programming and supervision The ALC radio family is programmed and supervised using different software tools. Some of them 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.

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

ÓÓÓÓÓÓÓÓÓÓÓÓ ÓÓÓÓÓÓÓÓÓÓÓÓ ÓÓÓÓÓÓÓÓÓÓÓÓ ÓÓÓÓÓÓÓÓÓÓÓÓ ÓÓÓÓÓÓÓÓÓÓÓÓ ÓÓÓÓÓÓÓÓÓÓÓÓ ÓÓÓÓÓÓÓÓÓÓÓÓ ÓÓÓÓÓÓÓÓÓÓÓÓ ÓÓÓÓÓÓÓÓÓÓÓÓ ÓÓÓÓÓÓÓÓÓÓÓÓ ÓÓÓÓÓÓÓÓÓÓÓÓ

2

Section

Descriptions and specification

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

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

ÓÓÓÓÓÓ ÓÓÓÓÓÓ ÓÓÓÓÓÓ ÓÓÓÓÓÓ ÓÓÓÓÓÓ ÓÓÓÓÓÓ 4.

4.1

4

ABBREVIATION LIST

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

–

DS

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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TITOLO DEL CAPITOLO

CM.89012.I

–

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

–

T/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

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

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5

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 without Ethernet 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 key features 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 4.1 for ODU; storage: class 1.2; transport: class 2.3)

•

EN 60950 for safety

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CM.89012.I

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 and controller units

•

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

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

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. Compact IDUs consist of a single circuit board plugged into a wired shelf. Line interfaces house tributary connections and, through a multiplexing/demultiplexing and bit insertion/extraction process, supply/receive the aggregate signal to/from the modulator/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

18

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CM.89012.I

CM.89012.I

side. Interfaces towards the ODU house the cable interface for bidirectional communication between 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. The controller section of the radio houses service channels interfaces, stores IDU firmware, interfaces SIAE management systems though dedicated supervision ports, and routes external and internal alarms to relay s.

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 a double conversion. The opposite occurs at the receive side, when the IF–converted carrier is sent 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 (up to 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 of keyboards, 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.

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CM.89012.I

Fig. 5.1

DPLX LINK 1 ACT TXRX TEST 1 R AL 2

1+1 ODU typical configuration with integrated antenna

DPLX DPLX LINK 2 LINK 3 ACT ACT 10/100 BTX

1

2

3

4

5

6

7

8

10

9

Q3

13

LCT

IN/OUT

14

15

48V1

–

PS2

16 1

2

– 48V2 +

20

12 PS1

2 +

Fig. 5.2

11

1

1+1 IDU typical configuration – 2x2, 4x2, 8x2, 16x2 Mbit/s with optional Ethernet module (V12252)

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

Fig. 5.3

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

SCT/LCT

1+1 equipment block diagram

Main traffic

Services

Services

Main traffic

DSP DEM

DSP DEM

DSP MOD

MAIN

Controller Unit

ALARM

ODU CONTROL

IDU CONTROL

BE

BI

CONTROLLER

DEMUX

MUX

Line Interface

BATT.

INTERF.

MOD

48 V BATT.

IDU

Radio Interface 2

ODU 2 CONTROLLER

IF DEM

INTERF.

CABLE

Radio Interface 1

ODU 1 CONTROLLER

IF MOD

48 V

IF DEM

CABLE

IF

CABLE

CABLE

CABLE INTERF. 2

CABLE INTERF. 1

Rx2

Tx2

Rx1

Tx1

SW CONTR.

SW CONTR.

ODU 2

1.5/7.5 dB

4 dB or

ODU 1

1.

TITOLO DEL CAPITOLO CM.89012.I

CM.89012.I

21

Fig. 5.4

22

SCT/LCT

Main traffic

Services

Services

Main traffic

DSP DEM

MAIN

ALARM

ODU CONTROL

IDU CONTROL

BE

BI

CONTROLLER

DEMUX

MUX

DSP MOD

48 V BATT.

ODU CONTROLLER

DEM

IF

MOD

IF

IDU

INTERF.

CABLE

CABLE CABLE INTERF. 1 Rx1

Tx1 SW CONTR.

ODU

1.

TITOLO DEL CAPITOLO CM.89012.I

1+0 non expandable equipment block diagram

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

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6

6.

6.1 •

•

EQUIPMENT TECHNICAL SPECIFICATIONS

TECHNICAL SPECIFICATION Frequency range –

7 GHz

7.11 to 7.7 GHz

–

8 GHz

7.7 to 8.5 GHz

–

11 GHz

10.7 to 11.7 GHz

–

13 GHz

12.75 to 13.25 GHz

–

15 GHz

14.4 to 15.35 GHz

–

18 GHz

17.7 to 19.7 GHz

–

23 GHz

21.2 to 23.6 GHz

–

25 GHz

24.5 to 26.5 GHz

–

28 GHz

27.5 to 29.5 GHz

–

38 GHz

37 to 39.5 GHz

RF channel arrangement –

7 GHz

ITU–R Rec F.385

–

8 GHz

ITU–R Rec F.386

–

11 GHz

no ITU–R Rec. for PDH 11 GHz band

–

13 GHz

ITU–R Rec F.497

–

15 GHz

ITU–R Rec F.636

–

18 GHz

ITU–R Rec F.595

–

23 GHz

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

–

25 GHz

ERC/T/R 13–02 Annex B

–

28 GHz

ERC/T/R 13–02 Annex C

–

38 GHz

ITU–R Rec F.749

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

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CM.89012.I

•

Go–return frequency

•

–

7 GHz

245/196/168/161/154 MHz

–

8 GHz

311.32 MHz

–

11 GHz

530 MHz

–

13 GHz

266 MHz

–

15 GHz

420/728 MHz

–

18 GHz

1010 MHz

–

23 GHz

1008/1232 MHz

–

25 GHz

1008 MHz

–

28 GHz

1008 MHz

–

38 GHz

1260 MHz

Transmission capacity –

Up to 16x2 Mbit/s with or without Ethernet traffic

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

•

Service channel capacity 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

•

Antenna configuration

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

•

Frequency accuracy

± 5 ppm; ± 10 ppm ageing included

•

RF spurious emissions

according to ETSI EN 301 390

•

Modulation

4QAM/16QAM

24

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CM.89012.I

CM.89012.I

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

Bit rate (Mbit/s) 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

•

Demodulation

coherent

•

Output power at the antenna side, 1+0 version

refer to Tab. 6.3

•

Receiver threshold at the antenna side 1+0 version

refer to Tab. 6.4 and Tab. 6.5

•

Additional losses both Tx and Rx sides, 1+1 version – 4 dB ±0.5 dB –

≤1.7 dB (branch 2)

(branch1)/≤7

dB

version with balanced hybrid version with unbalanced hybrid

•

Residual BER

1x10–11

•

Maximum input level for BER 10–3

–20 dBm

Tab. 6.3 Nominal output power +1 dB tolerance Frequency

Output power 4QAM

Output power 16QAM

7 GHz

+27 dBm

+22 dBm

8 GHz

+27 dBm

+22 dBm

11 GHz

+25 dBm

+20 dBm

13 GHz

+25 dBm

+20 dBm

15 GHz standard

+25 dBm

+20 dBm

15 GHz LP

+20 dBm

–

18 GHz

+20 dBm

+15 dBm

23 GHz

+20 dBm

+15 dBm

25 GHz

+20 dBm

+15 dBm

28 GHZ

+19 dBm

+14 dBm

38 GHz

+17 dBm

+13 dBm

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CM.89012.I

Tab. 6.4 Guaranteed received threshold in 1+0 configuration 4QAM

16QAM

2x2

Freq. q

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

8

–91 dBm

–93 dBm

–88 dBm

–90 dBm

–

–

–84 dBm

–85 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

15

–90.5 dBm

–92.5 dBm

–87.5 dBm

–89.5 dBm

–

–

–83.5 dBm

–85.5 dBm

18

–90 dBm

–92 dBm

–87 dBm

–89 dBm

–

–

–84 dBm

–86 dBm

23

–90 dBm

–92 dBm

–87 dBm

–89 dBm

–

–

–83 dBm

–85 dBm

25

–89.5 dBm

–91.5 dBm

–86.5 dBm

–88.5 dBm

–

–

–82.5 dBm

–84.5 dBm

28

–89 dBm

–91 dBm

–86 dBm

–88 dBm

–

–

–82 dBm

–84 dBm

38

–88 dBm

–90 dBm

–85 dBm

–88 dBm

–

–

–81 dBm

–83 dBm

Tab. 6.5 Guaranteed received threshold in 1+0 configuration 4QAM 8x2

Freq. q

26

16QAM 16x2

10–6

10–3

10–6

7

–85 dBm

–87 dBm

–82 dBm

8

–85 dBm

–87 dBm

–82 dBm

8x2 10–3

16x2

10–6

10–3

10–6

10–3

–84 dBm

–81 dBm

–83 dBm

–78 dBm

–80 dBm

–84 dBm

–81 dBm

–83 dBm

–78 dBm

–80 dBm

–83.5 dBm

–79.5 dBm

11

–84.5 dBm

–86.5 dBm

–81.5 dBm

–80.5 dBm

–82.5 dBm

–77.5 dBm

13

–84.5 dBm

–86.5 dBm

–81.5 dBm

–83.5 dBm

–80.5 dBm

–82.5 dBm

–77.5 dBm

–79.5 dBm

15

–84.5 dBm

–86.5 dBm

–81.5 dBm

–83.5 dBm

–80.5 dBm

–82.5 dBm

–77.5 dBm

–79.5 dBm

18

–84 dBm

–86 dBm

–81 dBm

–83 dBm

–80 dBm

–82 dBm

–77 dBm

–79 dBm

23

–84 dBm

–86 dBm

–81 dBm

–83 dBm

–80 dBm

–82 dBm

–77 dBm

–79 dBm

25

–83.5 dBm

–85.5 dBm

–80.5 dBm

–82.5 dBm

–79.5 dBm

–81.5 dBm

–76.5 dBm

–78.5 dBm

28

–83 dBm

–85 dBm

–80 dBm

–82 dBm

–79 dBm

–81 dBm

–76 dBm

–78 dBm

38

–82 dBm

–84 dBm

–80 dBm

–81 dBm

–78 dBm

–80 dBm

–75 dBm

–77 dBm

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

1.

TITOLO DEL CAPITOLO

CM.89012.I

CM.89012.I

•

Power supply –

•

Power supply voltage

–40.8 to –57.6 Vdc

Power consumption Fully equipped terminal with 370 m 1/4” IDU–ODU cable (refer to Tab. 6.6). Tab. 6.6

Configuration

Guaranteed power consumption (IDU) f315 GHz –40.8 to –57.6 Vdc

Guaranteed power consumption (IDU) f>15 GHz –40.8 to –57.6 Vdc

1+0

≤32 W

≤25 W

1+1

≤52 W

≤40 W

•

IDU only power consumption

(refer to Tab. 6.7) Tab. 6.7 Guaranteed power consumption (IDU) f315 GHz –40.8 to –57.6 Vdc

Guaranteed power consumption (IDU) f >15 GHz –40.8 to –57.6 Vdc

1+0

≤11 W

≤11 W

1+1

≤12 W

≤12 W

Configuration

•

Power supply connector consumption

(refer to Tab. 6.8)

Tab. 6.8 Guaranteed consumption f3 15 GHz –40,8Vdc

Guaranteed consumption f> 15 GHz –40,8Vdc

≤ 0,79 A

≤ 0,62 A

•

Fuse

•

Environmental conditions

3.15 A (M), 5x20 mm

–

Operational range for IDU

–5° C to +45° C

–

Operational range for ODU

–33° C to +55° C

–

Survival temperature range for IDU Survival temperature range for ODU

–10° C to +55° C

–

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

–40° C to +60° C

27

TITOLO DEL CAPITOLO

1.

CM.89012.I

–

Operational humidity for IDU Operational humidity for ODU

–

Heat dissipation of ODU

–

Wind load

–

•

95% at +35° C weather proof according to IP65 environmental class Thermal resistance 0.5° C/W Solar heat gain: not exceeding 5° C ≤260 Km/h

Mechanical characteristics Dimensions

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

Weight

–

Tab. 6.10 IDU/ODU weight 4.5 kg 1

ODU 1+0 ODU 1+1

13.3 kg

IDU 1+0/1+1

2

3.5/3.7 kg

Panning system 1+0/1+1

4.4 kg

Mechanical layout

–

1

2

refer to typical Fig. 6.1, Fig. 6.2 and Fig. 6.3. Trib. 1–2–3–4

Q3

LCT

48V

IN/OUT

PS TEST R

AL Trib. 5–6–7–8

– +

Fig. 6.1

IDU 1+0 standard (2x2/4x2 Mbit/s) Trib. 1–2–3–4

Q3

LCT

Trib. 9–10–11–12

48V1

IN/OUT

48V2 PS1

TX RX TEST R AL

1

1

2 Trib. 5–6–7–8

2

Trib. 13–14–15–16

–

2

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

1.

7/8 GHz 1+0: 5.5 kg

2.

7/8 GHz 1+1: 15.3 kg

28

1

– +

+

Fig. 6.2

PS2

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

TITOLO DEL CAPITOLO

1.

CM.89012.I

CM.89012.I

DPLX LINK 1 ACT TXRX TEST 1 R AL 2

DPLX DPLX 2 3 LINK LINK ACT ACT 10/100 BTX

1

2

3

4

5

6

7

8

10

9

Q3

12 PS1

13

LCT

IN/OUT

14

15 2

48V1

–

PS2

16 1

2

– 48V2 +

+

Fig. 6.3

11

1

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

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

29

1.

TITOLO DEL CAPITOLO

CM.89012.I

Fig. 6.4

1+0 ODU with separated antenna (pole mounting)

Fig. 6.5

1+1 ODU with separated antenna

30

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

1.

TITOLO DEL CAPITOLO

CM.89012.I

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)

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

31

1.

Fig. 6.8

TITOLO DEL CAPITOLO

CM.89012.I

1+1 ODU with separated antenna (wall mounting)

32

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

ÓÓÓÓÓÓ ÓÓÓÓÓÓ ÓÓÓÓÓÓ ÓÓÓÓÓÓ ÓÓÓÓÓÓ ÓÓÓÓÓÓ 7.

7

7.1

CHARACTERISTICS OF THE INDOOR UNIT

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 •

Bit rate

2048 kbit/s ±50 ppm

•

Line code

HDB3

•

Rated impedance

75 Ohm or 120 Ohm

•

Rated level

2.37 Vp/75 Ohm or 3 Vp/120 Ohm

•

Return loss

12 dB from 57 kHz to 102 kHz 18 dB from 102 kHz to 2048 kHz 14 dB from 2048 kHz to 3072 kHz

•

Max attenuation of the input cable

6 dB according to √f trend

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

33

1.

TITOLO DEL CAPITOLO

CM.89012.I

•

Accepted jitter

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

•

Transfer function

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

•

Connector type

SUB–D, 25 pins

Output side •

Bit rate

2048 kbit/s ±50 ppm

•

Rated impedance

75 Ohm or 120 Ohm

•

Rated level

2.37 Vp/75 Ohm or 3 Vp/120 Ohm

•

Output jitter

in accordance with G.742/G.823

•

Pulse shape

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

•

Connector type

SUB–D, 25 pins

7.2.2

Ethernet interface (option V12252)

RJ45 interface •

LAN type

Ethernet Twisted Pair 802.3 10BaseT/100BaseT

•

Connector

RJ45

•

Connection to LAN

direct with a CAT5 Twisted Pair

•

Protocol

T/IP or IPoverOSI

7.3

SERVICE CHANNEL INTERFACE

7.3.1

V.28 low speed synchronous/asynchronous data

•

Data interface

RS232

•

Electrical interface

CCITT Rec. V.28

•

Input speed

9600 baud

•

Control wires

DTR, DSR, DCD

34

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

1.

TITOLO DEL CAPITOLO

CM.89012.I

CM.89012.I

7.3.2

Alarm interface

output •

Relay s

normally open (NO) or normally closed (NC)

•

Open s Rmin

100 Mohm at 500 Vdc

•

Closed s Rmax

0.5 Ohm

•

Switching voltage Vmax

100 V

•

Switching current Imax

1A

input •

Equivalent circuit recognised as a closed

200 Ohm resist. (max) referred to ground

•

Equivalent circuit recognised as an open

60 kOhm (min) referred to ground

7.3.3

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

•

Tolerance

±100 ppm

•

Equipment side

contra–directional

•

Coding

clock and data on independent wires

•

Electrical interface

see Rec. CCITT V.11

7.3.4

Network Management Interface

RJ45 interface •

LAN type

Ethernet Twisted Pair 802.3 10BaseT/100BaseT

•

Connector

RJ45

•

Connection to LAN

direct with a CAT5 Twisted Pair

•

Protocol

T/IP or IPoverOSI

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

35

1.

TITOLO DEL CAPITOLO

CM.89012.I

LCT USB interface •

Electrical interface

USB 1.1 version

•

Baud rate

1.5 Mbit/s

•

Protocol

PPP

RS232 interface (optional) •

Electronic interface

V.28

•

Asynchronous baud rate

9600, 19200, 38400, 57600

•

Protocol

PPP

7.4 •

MODULATOR/DEMODULATOR Carrier modulating frequency –

Tx side

330 MHz

–

Rx side

140 MHz

•

Type of modulation

4QAM/16QAM

•

Modulating signal

from 4 Mbit/s to 34 Mbit/s depending on different versions

•

Spectrum shaping

raised cosine (roll–off = 0.5)

•

Equalization

5 taps

•

FEC coding gain

2.5 dB at 10–6

7.5

CABLE INTERFACE

•

Interconnection with the ODU unit

single coaxial cable for both Tx and Rx

•

Cable length

up to 370 m. with 1/4” cable type

•

Rated impedance

50 Ohm

36

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

1.

TITOLO DEL CAPITOLO

CM.89012.I

CM.89012.I

•

Signal running along the cable –

Tx nominal frequency

330 MHz

–

Rx nominal frequency

140 MHz

–

Transceiver management signals 388 kbit/s bidirectional

–

Carrier for transceiver management signals

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

–

Remote power supply

direct from battery voltage

7.6

AVAILABLE LOOPS

The following loop are available within the IDU: •

Tributary loop

•

Baseband loop

•

IDU loop

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

37

1.

38

TITOLO DEL CAPITOLO

CM.89012.I

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

ÎÎÎÎÎÎ ÎÎÎÎÎÎ ÎÎÎÎÎÎ ÎÎÎÎÎÎ ÎÎÎÎÎÎ ÎÎÎÎÎÎ

8

8.

8.1

DESCRIPTION OF THE INDOOR UNIT – PDH INTERFACES

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 following functionalities: •

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 before being multiplexed. The multiplexing scheme depends on the number and the bit rate of the input tributaries. Attached figures show different multiplexing scheme as follows: •

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

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

39

1.

TITOLO DEL CAPITOLO

CM.89012.I

•

Fig. 8.3 – 4x2 Mbit/s multiplexing. The mux aggregates the four 2 Mbit/s tributaries generating a 8448 kbit/s frame as per Recc. G.742. The multiplexed signal is then sent to 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 4x2 Mbit/s groups each of one generating a G742 frame structure at 8448 kbit/s to be sent to 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 four 4x2 Mbit/s groups each of one generating a G.742 frame structure at 8448 kbit/s. A further multiplexing of the achieved four 8448 kbit/s streams will generate a frame structure 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 occurring at the following bit rate depending on various versions implemented: Tab. 8.1 Version

Aggregate frame

2x2 Mbit/s

4860 kbit/s

4x2 Mbit/s

9720 kbit/s

8x2 Mbit/s

19440 kbit/s

16x2 Mbit/s

38880 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 achieved from 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 and then after a proper demultiplexing process (opposite to that previously described at the Tx side) sends them to the output interfaces.

40

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

1.

TITOLO DEL CAPITOLO

CM.89012.I

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 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 for connection 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 the cable interface. The connection to the demodulator input is made via a cable equalizer for cable loss compensation. The IF section of the QAM demodulator extracts the I and Q analogue signals then digital converted for the following processing: •

clock recovery

•

baseband equalisation and filtering

•

bit polarity decision

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

41

1.

TITOLO DEL CAPITOLO

CM.89012.I

•

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 the error 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 service voltages for the IDU feeding are achieved through a DC/DC converter for +3.6 V generation and a 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 the battery 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 and associated peripherals within the ODU. Controls for ODU management and alarm reporting is performed making use of a 388 kbit/s framed signals. The transport along the interconneting cable is performed via two FSK modulated carriers: 17.5 MHz from IDU to ODU; 5.5 MHZ from ODU to IDU. Cable interface Refer to Fig. 8.7. This circuit permits to communicate to the far ODU through the interconnecting cable. 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 s along with the internal alarms generated by the equipment.

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

42

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

1.

TITOLO DEL CAPITOLO

CM.89012.I

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 IP or IP over OSI as communication protocol stacks. See Fig. 8.9 for details. The interface ports 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 / by setting and then controlling the ’s ID and relevant .

•

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

•

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

•

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

•

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

•

: the main controller is equipped with two flash memory banks containing the running program (active bank) and the stand–by program (inactive bank). This permits to a new software release to the inactive bank without distributing the traffic. Bank switch enables the new release to be used. activity is based on FTP protocol which s application programs, FPGA configuration, configuration files on main controller inactive bank or directly on the 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. The commands are forwarded by the LCT/SCT program. Loop block diagram is shown by Fig. 8.10.

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

43

1.

TITOLO DEL CAPITOLO

8.2.1

CM.89012.I

Tributary loop

Tributary local loop Each input tributary is routed directly to the trib. output upon receiving the command from the LCT. 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 is still 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.

44

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

nx2

Fig. 8.1

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

Code converter

Code converter

CK

NRZ

CK

NRZ

MUX 2x2/4x2 8x2/16x2 see Fig. 8.2 through Fig. 8.5 Frame generator

BI: – main traffic – services – EOC – FEC – FAW

to/from main controller

– FSK mod/demod – 388 frame generator/receiver

X0 38.88 MHz

Aggregate frame

17.5 MHz

5.5 MHz

1.

TITOLO DEL CAPITOLO CM.89012.I

CM.89012.I

Line interface block diagram – Tx side

45

1.

TITOLO DEL CAPITOLO

CM.89012.I

Aggregate Ck

Ck 2x2 Mbit/s

MUX proprietary frame

B.I. Tx data Ck

2x2 Mbit/s

Fig. 8.2

DEMUX proprietary frame

B.E. Rx data

2x2 Mbit/s multiplexing/demultiplexing

Aggregate Ck 4x2 Mbit/s Ck MUX 2 –>8 G.742 4x2 Mbit/s

46

Framed data 8448 Tx Ck

DEMUX 2 –>8 G.742

Fig. 8.3

B.I.

B.E. Framed data 8448 Rx

4x2 Mbit/s multiplexing/demultiplexing

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

1.

TITOLO DEL CAPITOLO

CM.89012.I

CM.89012.I

Aggregate Ck 4x2 Mbit/s Ck MUX 2 –>8 G.742

Data

B.I.

4x2 Mbit/s MUX 2 –>8 G.742

4x2 Mbit/s

Framed data 8448 Tx Data

Ck 8448 kHz Tx DEMUX 8 –> 2 G.742

Data

B.E.

4x2 Mbit/s DEMUX 8 –> 2 G.742 Framed data 8448 Rx

Fig. 8.4

8x2 Mbit/s multiplexing/demultiplexing

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

47

1.

TITOLO DEL CAPITOLO

CM.89012.I

Aggregate Ck 4x2 Mbit/s MUX 2 –>8 G.742

B.I.

4x2 Mbit/s MUX 2 –>8 G.742 Ck 34368 kHz Tx

4x2 Mbit/s MUX 2 –>8 G.742

Framed data 34368 kbit/s

Ck 8448 kHz Tx 4x2 Mbit/s MUX 8–>34 G.751

MUX 2 –>8 G.742 Framed data 8448 kbit/s Tx

Aggregate Ck 4x2 Mbit/s DEMUX 8 –>2 G.742

B.E.

4x2 Mbit/s DEMUX 8 –>2 G.742 Ck 34368 kHz

4x2 Mbit/s DEMUX 8 –>2 G.742

Framed data 34368 kbit/s

Ck 8448 kHz 4x2 Mbit/s MUX 34–>8 G.751

DEMUX 8 –>2 G.742 Framed data 8448 kbit/s Tx

Fig. 8.5

48

16x2 Mbit/s multiplexing/demultiplexing

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

from demodulator side of the radio interface BE

Fig. 8.6

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

See Fig. 8.2 through Fig. 8.5

DEMUX 2/2x2/4x2 8x2/16x2

Code converter

Code converter nx2 Mbit/s

1.

TITOLO DEL CAPITOLO CM.89012.I

CM.89012.I

Line interface block diagram (Rx side)

49

Fig. 8.7

50

to BE of line interface FEC CRC analysis & aligner

A

DC

DEM QAM (IF part)

DC

Remote power supply

17.5 MHz

5.5 MHz

330 MHz

Overcurrent protect.

– Ck recovery I&Q D – Carrier lock – Equaliz. & filt. – Decision – Diff. decod. – S/P

battery –48 V

to line interface

QAM MOD (IF part)

from line interface

– S/P conversion – diff. encoding – modulating signal generator

– BER extimates – High BER – Low BER – EW

– BER meas. – P.M.

aggregate frame (from BI of line interface)

Cable equaliz.

Step down

I/V protect

–5 V

+3.6 V

Cable interface

1.

TITOLO DEL CAPITOLO CM.89012.I

Radio interface block diagram

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

LAN

Fig. 8.8

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

338 kb/s gen/rec. ODU

388 kbit/s

FSK modem

FSK modem

388 kbit/s generator receiver

Alarm/ Out

Peripheral controller

In

Main controller

USB

EOC

1.

TITOLO DEL CAPITOLO CM.89012.I

CM.89012.I

Main and peripheral controller connection

51

1.

TITOLO DEL CAPITOLO

CM.89012.I

APPLICATION SOFTWARE Applic./present. session layers

SNMP

Transport layer

T/UDP

IPoverOSI

Routing layer

IS–IS ISO 10589

Data link layer

PPP

PPP

LLC MAC

LAPD Q921

LCC MAC

Physical layer

USB

EOC

Ethernet LAN

EOC

Ethernet LAN

Fig. 8.9

52

IP

IP/IPoverOSI protocol stack

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

1.

TITOLO DEL CAPITOLO

CM.89012.I

Fig. 8.10

DEMUX

Trib. loc. loop

Trib. OUT

Trib. IN

Trib. rem. loop

MUX

IDU

BI

BE

BB loop

DEM

MOD

IDU loop

IF combiner

CM.89012.I

IDU loopback

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ÎÎÎÎÎÎ ÎÎÎÎÎÎ ÎÎÎÎÎÎ ÎÎÎÎÎÎ ÎÎÎÎÎÎ ÎÎÎÎÎÎ

9

9.

DESCRIPTION OF THE INDOOR UNIT – ETHERNET INTERFACES

The indoor unit can be provided with Ethernet module option (V12252). In this way the equipment has both 2 Mbit/s and Ethernet ports, and the bit rate assigned to Ethernet traffic is the nominal capacity of the radio minus enabled tributaries. Description that follows covers Ethernet signal treatment, 2 Mbit/s signal treatment has been described 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

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•

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

•

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

•

layer 3 ToS/DS (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 . Internal port 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 up to 16x2 Mbit/s and two streams for capacity of 12 – 16 2 Mbit/s streams, plus other 16x2 Mbit/s streams 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 resulting stream is divided into the used number of 2 Mbit/s streams. The 2 Mbit/s streams are then multiplexed, together with 2 Mbit/s arriving from front , the resulting stream goes to the modulator, see Fig. 9.1. In Rx the stream arriving from the demodulator is divided into the 2 Mbit/s streams, then the 2 Mbit/s not used into the front 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 , are multiplexed 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 available 2 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 RJ45 connector. For input or output signals at RJ45 please refer to connection chapter. Cable can 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:

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•

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 sustain residuals of possible electrostatic discharges (ESD). With LCT/SCT program it is possible to activate autonegotiation (speed/duplex/flow control) on 10/100BaseT interface.

9.1.3

Front 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 = link with 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 more separated 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 traffic greater than traffic in a single LAN.

The bridge realized into Ethernet module is a transparent bridge (IEEE 802.1 part D) into the same 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 the basic 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 destination address, 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) and is present into local address table the frame is sent only on destintion LAN (MAC switching)

•

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 from a line on all the others. The bridge, in fact, acquires a frame, analyzes it, reconstruct it and routes

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it. The bridge compensates also the different speeds of the interfaces, therefore an input can be 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 from different 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 station is 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 frame only 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, the retransmission becomes more and more selective (and therefore more efficient)

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

The whole process of bridging is restricted to the ports which are of the same Vlan as described 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 in parallel and are normally in receiving mode. Only one PC, at a certain time, transmits on the cable, the others are receiving, so this is half duplex mode, and only one PC uses the recived message. 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 pairs are used with 10BaseT, one for Tx one for Rx. Into 10Base5 and 10BaseT standards, network protocols are the same the difference lays into the electrical interface. UTP cable is connected point 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 case it is possible to activate transmission on both pairs at the same time, on one twisted pair for one direction, on the other pair for opposite direction. Thus we obtain full duplex transmission on UTP. Activating full duplex transmission it is possible to obtain a theoretical increase of performance of nearly 100%. Full duplex mode can be activated into 10/100BaseT interfaces manually or with autonegotiation 100BaseFx operates always into full duplex mode.

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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 the alarm status of Ethernet interface blocking any transmission to it. LLF can be enabled for each 3 ports at front . With LLF enabled the equipment connected (routers, switches so on) can be 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–over between 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, seem to 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 the same physical LAN but on different VLAN work in separated mode thus they do not share broadcast and multicast messages. This results in a reduction of broadcast generated traffic and above 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 ports or 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 the same way.

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For each input port it is possible to define where to route the incoming traffic; one or more of the 3 other ports can be Enabled to exit the incoming traffic. It is possible, also, to route back the incoming traffic into the same port. This type of connection are monodirectional. For a dibirectional connection between a generic Lan A and Lan B it is necessary to set the connection from 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 internal switch can connect two or more ports together. Then MAC address bridging rules will be applied to this packet. It is possible to select that a packet 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, untagged packets 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 of Vlan others are not . Ports of a Vlan are allowed to receive and send packets with 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 a member. 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 hip MAC address bridging rules will be applied to this packet.

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

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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 frames with 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 the rules of switch organized by port.

•

Secure: Untagged frames cannot enter the switch, Tagged frames with 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 cannot enter the switch.

Operations at the input. At the input port the packet is received and a switching decision must be made. The switch analyse the Vlan ID (if present) and decides whether and where to forward the frame. If the received packet is untagged, the switch sends the packet to the port specified into incoming port “Lan per port” settings. If the packet is tagged the switch check the other 3 destination ports to find at least one with the same Vlan ID and put the packet into output port queue. If the Vlan ID is not listed into Vlan Configuration Table the switch sends the packet to the 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 Vlan Configuration Table, tagged packets keep their tag, untagged packets take Default VID of 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. A solution 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 defined into IEEE 802.1p (see Fig. 9.2). Every switch output port holds 4 output queues: queue 4 has highest priority, queue 0 has the lowest 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 send the packets to one of the 4 queues of output ports defining which is the Default Priority Queue: Queue = 0, 1, 2, 3. For Tagged packets it is necessary to Disable Priority so they will go in the same queue of Untagged packets.

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•

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

Outgoing packet policy at output ports can be WFQ (Wait Fair Queue) with fixed proportional output 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 (DS) Only for IP packets it is possible to use incoming Layer 3 ToS (see Fig. 9.4) to prioritize incoming packets. The 8 bits available can be read as 7 bits of ToS or 6 bits of DS as shown in Fig. 9.5. According priority defined into ToS/DS the packet is sent into high priority queue low priority queue of output ports. With SCT/LCT program it is possible to select a different output queue for any ToS/DS priority level at each input port.

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2 Mbit/s

10/100BaseT

MUX 16x2 Mbit/s

MUX 16x2 Mbit/s CONCATENATED 2 Mbit/s

Fig. 9.1

10/100BaseT

10/100BaseT

10/100BaseT

0–16x2 Mbit/s

LAPS

Only for 32x2 Mbit/s version

PDH radio

PDH RADIO

LIM Ethernet 2 Mbit/s block diagram

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Ethernet Layer 2 Header, non–802.1p Destination

Source

Type/Length

Ethernet Layer 2 Header, 802.1p Destination

Source

Tag Control Info

Type/Length

Ethernet Layer 2 Header, 802.1p Tagged frame type interpretation

3 bit priority field 802.1p Canonical

12–bit 802.1q VLAN Identifier

8100 h 2–Bytes

3–Bits

1–Bit

12–Bits

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. 9.2

Tag control into field

Queue 3

Queue 2 Input port

Queue 1

Output Port

Queue 0

Fig. 9.3

64

Output queues

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4

4

8

16

Version

IHL

TOS

Total Length Flags

Total Length TTL

Protocol ID

Fragment Offset

Header Checksum

Source IP Address Destination IP Address Padding

Options Data

Fig. 9.4

ToS/DS tag position into IP packets

MSB 0

LSB 1

2

3

DS ToS

Fig. 9.5

4

5

6

7

Not used Not used

ToS/DS

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10

10.

10.1

CHARACTERISTICS OF THE OUTDOOR UNIT

GENERAL

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

10.2

TECHNICAL SPECIFICATION

•

Output power at the antenna side

•

Transceiver tuning range

see Tab. 10.1

–

7 GHz

42 MHz (154 MHz duplex spacing) 56 MHz (161/168/196 MHz duplex spacing) 84 MHz (245 MHz duplex spacing)

–

13 GHz

84 MHz

–

15 GHz

119 MHz

–

18 GHz

330 MHz

–

23 GHz

336 MHz

–

25 GHz/28 GHz

448 MHz

–

38 GHz

560 MHz

•

RF frequency agility

•

Duplex spacing

125 kHz step

–

7 GHz

245/196/168/161/154 MHz

–

8 GHz

311,32 MHz

–

11 GHz

530 MHz

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–

13 GHz

266 MHz

–

15 GHz

420/490/728 MHz

–

18 GHz

1010 MHz

–

23 GHz

1008/1232 MHz

–

25 GHz/28 GHz

1008 MHz

–

38 GHz

1260 MHz

ATPC dynamic range –

7, 8, 11, 13, 15 GHz

40 dB

–

18, 23, 25, 28, 38 GHz

20 dB

•

Transmit power attenuation range

40 dB dynamic, 1 dB software adjustable

•

Transmitter shut–down

40 dB

•

Antenna side flange –

7/8 GHz

PBR84 or UBR84 3

–

13 GHz

UDR120 or UBR140

–

15 GHz

UDR140 or UBR140

–

18/23/25 GHz

PBR220 or UBR220

–

28/38 GHz

PBR320 or UBR320

•

AGC dynamic range

from –20 dBm to threshold corresponding to BER10–3

•

Accuracy of Rx level indication (PC reading)

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

•

Maximum input level for BER 10–3

–20 dBm

•

Type of connector at the cable interface side

“N”

•

Signals at the cable interface

•

3.

68

–

QAM modulated carrier

330 MHz (from IDU to ODU) 140 MHz (from ODU to IDU)

–

Telemetry

388 kbit/s

–

Telemetry carriers

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

Available loops

RF loop

PBR with integrated antenna UBR with separated antenna

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Tab. 10.1 Nominal output power +1 dB tolerance Equipment

Output power 4QAM

Output power 16QAM

7 GHz

+27 dBm

+22 dBm

8 GHz

+27 dBm

+22 dBm

11 GHz

+25 dBm

+20 dBm

13 GHz

+25 dBm

+20 dBm

15 GHz standard

+25 dBm

+20 dBm

15 GHz LP

+20 dBm

–

18 GHz

+20 dBm

+15 dBm

23 GHz

+20 dBm

+15 dBm

25 GHz

+20 dBm

+15 dBm

28 GHz

+19 dBm

+14 dBm

38 GHz

+17 dBm

+13 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)

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11

11.

11.1

DESCRIPTION OF THE OUTDOOR UNIT

GENERAL

The 1+0 ODU (refer to Fig. 11.1) consists of a two shell aluminium mechanical structure, one shell 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 secured to 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 forwarded to a mixer ing through a cable equalizer for cable loss compensation up to 40 dB at 330 MHz. The mixer and the following band filter give rise to a second IF Tx carrier the frequency 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 latter is common to both Tx and Rx sides.

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The IF carrier is converted to RF and then amplified making use of a MMIC circuit. The conversion 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 including the AGC. Before reaching the antenna side the RF signal at the output of MMIC es through the following 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 band filter for antenna coupling.

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

11.3

RECEIVE SECTION

The RF signal from the Rx band filter is sent to a low noise amplifier that improves the receiver 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 receive RF level. Between two amplifiers a band filter assures the required selectivity to the receiver. The filter is SAW type and the bandwidth depends on the transmitted capacity.

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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 latter consists 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 IDU measurements 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 the RF level at the remote terminal. This value has to be preset from the local terminal as threshold high 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 the increase of the hop attenuation, a microP at the received side of the remote terminal sends back to the local terminal a control to increase the transmitted power. The maximum ATPC range is 40 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 the microP causes the output power to decrease. ATPC range can be reduced from the maximum value to 0 dB, by 1 dB step, consequently to a reduction of the output maximum power through an adjusted attenuation.

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11.6

CM.89012.I

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 shown in Fig. 11.4 and Fig. 11.5. The transmitter switchover is electromechanic type and consists of two ON/OFF switches within the 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

Highest

Lowest

74

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

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)

Priority 5

Revertive Tx (branch one preferential)

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

1.

TITOLO DEL CAPITOLO

CM.89012.I

CM.89012.I

11.7

POWER SUPPLY

The battery voltage is dropped from the cable interface and then sent to a DC/DC converter to generate 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 at different 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.

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

75

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CM.89012.I

”N” ”BNC” Ground bolt Fig. 11.1

Fig. 11.2

76

1+0 ODU version

1+1 hot stand–by version

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

Fig. 11.3

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

PRx meas.

ODU block diagram

BNC

N type

PRx meas

MOD

330 MHz

x

AGC

–12 V

+6.2 to 8.2 V

+3.5 V

DEM 17.5 MHz

ctrl

variable bw (capacity depending)

388 kbit/s

control

Alarm MUX manag & DEMUX

Cable equaliz.

388 kbit/s

INV

Step up

140 MHz

REC 17.5 MHz

5.5 5.5 MHz MHz

17.5 MHz

Cable interface

–48 V

DC

DC

140 MHz

Alm loops ctrl

comm

Rx

unit

IF LO

Tx

T

AGC

approx. 765 MHz

ctrl

IF Tx

PTx att. control 0 to 40 dB

Tx

Rx

RF LO unit

ctrl

LNA

MMIC

RF loop

x

antenna side

1.

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CM.89012.I

77

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CM.89012.I

Tx side SW control Rx side Antenna side Tx side SW control Rx side

Fig. 11.4

1+1 hot stand–by 1 antenna

Tx side SW control

First antenna

Rx side

Tx side SW control

Second antenna

Rx side

Fig. 11.5

78

1+1 hot stand–by 2 antennas

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

1.

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CM.89012.I

CM.89012.I

RemotePRx dBm Local Thresh High

Remote

Rx

Tx PTxactuation

Thresh Low

µP

Rx

Transmission

PRx recording level µP PTx control

Tx

of PTx control

Hop attenuation (dB) LocalPTx dBm PTx max. 20 dB ATPC range

PTx min.

Hop attenuation (dB)

Fig. 11.6

ATPC operation

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

79

1.

80

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CM.89012.I

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

ÓÓÓÓÓÓ ÓÓÓÓÓÓ ÓÓÓÓÓÓ ÓÓÓÓÓÓ ÓÓÓÓÓÓ ÓÓÓÓÓÓ

12

12.

12.1

24/48 VOLT DC/DC CONVERTER D52089

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+0 version the subrack is G52003 with one D52089 unit and the remaining half front 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.

Fuse 6.3 A

Green LED

Fig. 12.1

–

24Vdc IN

–

48 Vdc output female 3W3 connector

ALARM

+

ON

+

M6,3A 250V

24 Vdc input male 3W3 connector

48Vdc OUT 2A CM2 connector

DC/DC converter front coverplate

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

81

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12.2

ENVIRONMENTAL CONDITIONS

•

Operational range

–10° 50° C

•

Storage range

–40° 80° C

•

Operational humidity

90% max in the range –5° 30° C

12.3

ELECTRICAL CHARACTERISTICS

•

Vinput

24 Vdc (20.4 28.8 Vdc floating)

•

Voutput

52 Vdc

•

Max current in input

4.5 A

•

Max 24 Vdc consumption

90 W

•

Max 48 Vdc load

75 W

•

Secondary voltage ripple

≤ 200 mVpp

•

Surge current (Inrush current)

ETS 300 132–2

•

Conducted immunity

ETS 300 132–2

•

Conducted emission

ETS 300 132–2

•

Short duration voltage transient

ETS 300 132–2 (ETR 283)

•

Abnormal service voltage

ETS 300 132–2

•

Voltage changes due to the regulation of power supply

ETS 300 132–2

•

Electromagnetic compatibility

EN 300 086

•

Safety

EN 60950–1

•

Protections against

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

82

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

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CM.89012.I

CM.89012.I

•

Visual indication

ON = green led active on input primary voltage present

•

Alarm (CM2 connector)

with relay on 9 pin male SUB–D connector Alarm off: 8–9 pin open, 7–9 pin closed Alarm on when Vout decreases ≥ 15%: 8–9 pin closed, 7–9 pin open

•

Fuse

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 cables F03489 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.

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

83

Fig. 12.2

84

AL

Q3

LCT

IN/OUT

Trib. 5–6–7–8

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

R

TEST

Trib. 1–2–3–4

6,3A M 250V

ON

48V

–

PS

IN 24Vdc

24 Vdc IN –

Fuse 6.3 A

F03489

–

G52003

2A OUT 48Vdc

ALARM

1.

TITOLO DEL CAPITOLO CM.89012.I

+ +

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

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

+

AL

TX RX

2

1

Q3

LCT IN/OUT

24Vdc IN

+

+

Trib. 5–6–7–8

Trib. 1–2–3–4

48Vdc 2A OUT

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

R

TEST

ON

–

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

6,3A M 250V

– ALARM

Trib. 13–14–15–16

Trib. 9–10–11–12

6,3A M 250V

1

Fuse 6.3 A

F03278

ON

48V1

–

PS2

PS1

24Vdc IN

24 Vdc IN

+

Fig. 12.3 –

24 Vdc IN

48V2

–

Fuse 6.3 A

+ –

2

F03489

48Vdc OUT 2A

1

ALARM

2

1.

TITOLO DEL CAPITOLO CM.89012.I

CM.89012.I

+

+

24/48 V DC/DC converter connections to IDU 1+1

85

1.

86

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CM.89012.I

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

ÓÓÓÓÓÓÓÓÓÓÓÓ ÓÓÓÓÓÓÓÓÓÓÓÓ ÓÓÓÓÓÓÓÓÓÓÓÓ ÓÓÓÓÓÓÓÓÓÓÓÓ ÓÓÓÓÓÓÓÓÓÓÓÓ ÓÓÓÓÓÓÓÓÓÓÓÓ ÓÓÓÓÓÓÓÓÓÓÓÓ ÓÓÓÓÓÓÓÓÓÓÓÓ ÓÓÓÓÓÓÓÓÓÓÓÓ ÓÓÓÓÓÓÓÓÓÓÓÓ ÓÓÓÓÓÓÓÓÓÓÓÓ

3

Section

Installation

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

87

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CM.89012.I

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

ÎÎÎÎÎÎ ÎÎÎÎÎÎ ÎÎÎÎÎÎ ÎÎÎÎÎÎ ÎÎÎÎÎÎ ÎÎÎÎÎÎ

13

13.

13.1

INSTALLATION AND PROCEDURES FOR ENSURING ELECTROMAGNETIC COMPATIBILITY

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 together in an appropriate cardboard box. After unpacking, mechanical installation takes place followed by electrical connections as described 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 allows to 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 two IDUs to avoid overheating problems.

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

89

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CM.89012.I

13.3

ELECTRICAL WIRING

The electrical wiring must be done using appropriate cables thus assuring the equipment complies with electromagnetic compatibility standards. The cable terminates to flying connectors which have to be connected to the corresponding connectors 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 terminating the cable

Type of cable/conductor

Battery

Polarised SUB–D 3W3 female connector

Section of each wire ≥ 2.5 4 sq.mm

Tributary signals

25 pin SUB–D male connector

120 Ohm balanced four symmetric pairs with shield

Coaxial connector 1.0/2.3

75 Ohm unbalanced with shield

input/alarm output

9 pin SUB–D female connector with shielded holder

9 conductor cable with double brass sheath type interconductor DB28.25 or equivalent

LCT

USB connector

USB connector

GND

Faston male type

Section area ≥ 6 sq. mm.

4.

90

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

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

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CM.89012.I

CM.89012.I

13.4

GROUNDING CONNECTION

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

Indoor

3

4

4

3

ODU unit 1

5

IDU unit

7

(+) (–)

2

6

Station ground

Local ground

ground rack

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 male connectors at both sides. (4) Grounding kit type Cabel Metal or similar to connect the shield of interconnection cable. (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 a section area 2.5 sq. mm. Length ≤ 10 m. (7) Grounding cords connected to a real earth inside the station. The cross section area of the cable must be ≥ 16 sq. mm

Fig. 13.1

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

91

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92

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CM.89012.I

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

ÓÓÓÓÓÓ ÓÓÓÓÓÓ ÓÓÓÓÓÓ ÓÓÓÓÓÓ ÓÓÓÓÓÓ ÓÓÓÓÓÓ

14

14.

14.1

CONNECTIONS

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

connections are performed through connectors on the IDU front modules (see Fig. 14.1). The connectors are the following: •

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

•

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

•

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.

Trib. 1–2–3–4

Q3

LCT

Trib. 9–10–11–12

48V1

IN/OUT

48V2 PS1

TX RX TEST R AL

1 2

1

5.

2 –

PS2

+

Fig. 14.1

Trib. 13–14–15–16

+

Trib. 5–6–7–8

1

2

–

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

SMA kind: max torque 0.5 Nm

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

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CM.89012.I

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

1

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

1

Ground

Note

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

4

Tributary 2/6/10/14 input (cold wire)

4

Ground

5

Tributary 2/6/10/14 input (hot wire)

5

Tributary 2/6/10/14 input

17

Tributary 2/6/10/14 input (ground)

17

Ground

18

Tributary 2/6/10/14 output (cold wire)

18

Ground

19

Tributary 2/6/10/14 output (hot wire)

19

Tributary 2/6/10/14 output

6

Tributary 2/6/10/14 output (ground)

6

Ground

7

Tributary 3/7/11/15 input (cold wire)

7

Ground

8

Tributary 3/7/11/15 input (hot wire)

8

Tributary 3/7/11/15 input

20

Tributary 3/7/11/15 input (ground)

20

Ground

21

Tributary 3/7/11/15 output (cold wire)

21

Ground

22

Tributary 3/7/11/15 output (hot wire)

22

Tributary 3/7/11/15 output

9

Tributary 3/7/11/15 output (ground)

9

Ground

10

Tributary 4/8/12/16 input (cold wire)

10

Ground

11

Tributary 4/8/12/16 input (hot wire)

11

Tributary 4/8/12/16 input

23

Tributary 4/8/12/16 input (ground)

23

Ground

24

Tributary 4/8/12/16 output (cold wire)

24

Ground

25

Tributary 4/8/12/16 output (hot wire)

25

Tributary 4/8/12/16 output

12

Tributary 4/8/12/16 output (ground)

12

Ground

13

Ground

13

Ground

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

94

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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–Tx

4

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

Description

1

RTS

2

TD

3

DTR

4

DSR

5

GND

6

RD

7

CTS

8

DCD

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

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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 in/out connector pin–out

96

Pin

Description

1

C relay

2

NA/NC relay

3

input 01

4

input 02

5

GND

6

NC

7

input 03

8

input 04

9

NC

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

ÓÓÓÓÓÓ ÓÓÓÓÓÓ ÓÓÓÓÓÓ ÓÓÓÓÓÓ ÓÓÓÓÓÓ ÓÓÓÓÓÓ

15

15.

15.1

INSTALLATION ONTO THE POLE OF THE ODU WITH SEPARATED ANTENNA

INSTALLATION KIT

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

•

•

1+0 standard version –

antisliding strip (see Fig. 15.1)

–

ing 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)

–

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)

–

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+1 version –

antisliding strip (see Fig. 15.1)

–

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

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

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CM.89012.I

15.2

–

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.

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 ing plate 6

•

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

•

1+1: installation onto the pole of the ing 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 ing plate Fig. 15.1 – Mount antislide strip around the pole. The position of the plastic blocks depends on the position of the ing plate (see next step) Fig. 15.2 – Adhere the ing plate to the antisliding strip plastic blocks and then secure it to the pole through the fixing bracket for 60–114 mm pole (see Fig. 15.2). Bolts and nuts are available on the ing 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 consists of an additional plate to enlarge the standard ing plate dimension and relevant U–bolt for 219 mm pole fixing.

6.

98

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

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

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CM.89012.I

CM.89012.I

Fig. 15.4 – 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 alternatively the 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 with ODU fast locking mechanism. The flange can be mounted horizontally (as shown in Fig. 15.4) or vertically as function of convenience. Fig. 15.5 – Fix the with ODU fast locking mechanism to the ing plate making use of available bolts and nuts. Fig. 15.5 shows three possible positions. Tightening torque must be 18 Nm. 1+0 Band–it In case of 1+0 ODU installation, a band–it pole mounting kit can be used: through slots (see Fig. 15.6) on the ing plate two metallic bands secure the plate on the pole by means of clips (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 available the dimensions of which depend on the waveguide type. Tighten progressively and alternatively the four screws with the following torque (see Tab. 15.1). 1+1 – Installation onto the pole of the ing plate Fig. 15.1 – Mount antislide strip around the pole. The position of the plastic blocks depends on the position of the ing plate (see next step) Fig. 15.2 – Position the ing plate to the antisliding strip plastic blocks and then secure it to the pole through the fixing bracket for 60–114 mm pole (see Fig. 15.2). Bolts and nuts are available on the ing plate kit. Tightening torque must be 32 Nm. Fig. 15.7 – Secure the hybrid with ODU fast locking mechanism to the ing plate using bolt and nuts available on the 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. Fig. 15.7 – 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 alternatively the four screws with the following torque:

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

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TITOLO DEL CAPITOLO

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CM.89012.I

Tab. 15.2 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

Warning: It is advisable to shape the waveguide flexible trunk, connecting ODU flange with antenna flange as shown in Fig. 15.10. This avoids possible condensate to be channelled towards the 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. 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 with ODU fast locking mechanism and align ODU 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 the polarisation. 4.

With respect to the flange alignment, turn the ODU body approx. 30° anti–clockwise and then insert the ODU body into the and search for alignment between reference tooth on the (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 and the ODU rotation stops.

6.

Secure ODU body on the by tightening bolts (1) (see Fig. 15.4 – 1+0 version or 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.

100

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CM.89012.I

CM.89012.I

7 mm spanner or Phillips screwdriver

Antisliding strip

Plastic blocks

Fig. 15.1

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

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1.

CM.89012.I

Use 17 mm wrench (32Nm torque)

ing plate Use 15 mm wrench (32Nm torque)

Fig. 15.2

102

60–114 mm pole ing plate fixing

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

1.

TITOLO DEL CAPITOLO

CM.89012.I

CM.89012.I

Fig. 15.3

Adapting kit for 219 mm pole

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

103

1.

TITOLO DEL CAPITOLO

CM.89012.I

Flexible waveguide trunk or rigid angular waveguide

Antenna side flange

3 mm Allen key

with ODU fast locking mechanism

Reference tooth Reference tooth

1 1 13 mm wrench 6 Nm torque

Position of antenna side flange

Fig. 15.4

104

Mounting possible position

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

1.

TITOLO DEL CAPITOLO

CM.89012.I

CM.89012.I

13 mm wrench (18 Nm torque)

Fig. 15.5

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

105

1.

TITOLO DEL CAPITOLO

Fig. 15.6

106

CM.89012.I

Band–it pole mounting

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

1.

TITOLO DEL CAPITOLO

CM.89012.I

CM.89012.I

Use 13 mm wrench (18 Nm torque)

Hybrid with ODU fast locking mechanism

Reference tooth

Reference tooth

1 1

RT1

RT2

Fig. 15.7

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

107

1.

TITOLO DEL CAPITOLO

CM.89012.I

Vertical

Fig. 15.8

108

Horizontal

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.

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

1.

TITOLO DEL CAPITOLO

CM.89012.I

CM.89012.I

Reference tooth O–ring ODU side flange

”N”

”BNC”

Ground bolt

Fig. 15.9

ODU body reference tooth

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

109

1.

TITOLO DEL CAPITOLO

Fig. 15.10

110

CM.89012.I

Final ODU assembly of 1+1 version

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

1.

TITOLO DEL CAPITOLO

CM.89012.I

CM.89012.I

13 mm torque wrench (6 Nm torque)

1 2 3 4 5

1.

Bolt

2. Spring washer 3. Flat washer 4. Earth cable collar 5. Flat washer

Fig. 15.11

ODU grounding

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

111

1.

112

TITOLO DEL CAPITOLO

CM.89012.I

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

ÓÓÓÓÓÓ ÓÓÓÓÓÓ ÓÓÓÓÓÓ ÓÓÓÓÓÓ ÓÓÓÓÓÓ ÓÓÓÓÓÓ

16

16.

16.1

INSTALLATION ONTO THE WALL OF THE ODU WITH SEPARATED ANTENNA

INSTALLATION KIT

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

•

1+0 version –

wall ing plate with additional surface extension plates (see Fig. 16.1)

–

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

–

with ODU fast locking mechanism (see Fig. 16.2)

–

flexible waveguide trunk for connection to antenna (optional) (see Fig. 16.2)

–

kit for ground connection making part of ODU

1+1 version –

ing plate with additional 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.

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

113

TITOLO DEL CAPITOLO

1.

CM.89012.I

16.2

REQUIRED TOOLS FOR MOUNTING (NOT SUPPLIED)

•

N.2 13mm torque wrench

•

N.1 15 mm torque wrench

•

N.1 17 mm torque wrench

•

N.1 3 mm Allen wrench

•

N.1 2.5 mm Allen wrench

16.3

INSTALLATION PROCEDURE

Installation procedure proceeds according to the following steps: •

Version 1+0: installation onto the wall of the ing plate

•

Version 1+1: installation onto the wall of the ing 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 ing plate Fig. 16.1 – Fix on the ing plate the two supplied extension plates to increase the wall surface. Fig. 16.1 – Secure the ing 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 alternatively the four screws with the following torque: Tab. 16.1 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

114

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

1.

TITOLO DEL CAPITOLO

CM.89012.I

CM.89012.I

Fig. 16.2 – Fix the antenna side flange to the with ODU fast locking mechanism. The flange can be mounted horizontally (as shown in Fig. 16.2) or vertically as function of convenience. Fig. 16.3 – Fix the with ODU fast locking mechanism to the ing plate making use of available bolts and nuts. Fig. 16.3 shows three possible positions. Tightening torque must be 18 Nm. 1+1 version – Installation onto the wall of the ing plate Fig. 16.1 – Fix on the ing plate the two supplied extension plates to increase the wall surface. Fig. 16.1 – Secure the ing plate on the wall using the more suitable screws. Fig. 16.4 – Secure the hybrid with ODU fast locking mechanism to the ing plate using bolt and nuts available on the 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. Fig. 16.4 – 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 alternatively the four screws with the following torque: Tab. 16.2 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

Warning: It is advisable to shape the waveguide flexible trunk, connecting ODU flange with antenna flange as shown in Fig. 16.7 This avoids possible condensate to be channelled towards the 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 with ODU fast locking mechanism and align ODU 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 the polarisation. 4.

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

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

115

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TITOLO DEL CAPITOLO

CM.89012.I

reference tooth on the (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 and the ODU rotation stops.

6.

Secure ODU body on the by tightening bolts (1) (see Fig. 16.2 – 1+0 version or 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.

116

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

1.

TITOLO DEL CAPITOLO

CM.89012.I

CM.89012.I

Extension plate

13 mm wrench

ing plate

M8 bolt and nut

Fig. 16.1

Wall ing plate

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

117

1.

TITOLO DEL CAPITOLO

CM.89012.I

Flexible waveguide trunk

Antenna side flange

with ODU fast locking mechanism

Reference tooth Reference tooth

1 1 13 mm wrench 6 Nm torque

Position of antenna side flange

Fig. 16.2

118

with ODU fast locking mechanism

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

1.

TITOLO DEL CAPITOLO

CM.89012.I

CM.89012.I

Fig. 16.3

Mounting possible positions

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

119

1.

TITOLO DEL CAPITOLO

CM.89012.I

Use 13 mm wrench (18 Nm torque)

Hybrid with ODU fast locking mechanism

Reference tooth

Reference tooth

1 1

RT1

RT2

Fig. 16.4

120

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

1.

TITOLO DEL CAPITOLO

CM.89012.I

CM.89012.I

Vertical

Fig. 16.5

Horizontal

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.

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

121

1.

TITOLO DEL CAPITOLO

CM.89012.I

Reference tooth O–ring ODU side flange

”N”

”BNC”

Ground bolt

Fig. 16.6

122

ODU body reference tooth

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

1.

TITOLO DEL CAPITOLO

CM.89012.I

CM.89012.I

Fig. 16.7

Final ODU assembly of 1+1 version

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

123

1.

TITOLO DEL CAPITOLO

CM.89012.I

1 2 3 4 5

1.

Bolt

2. Spring washer 3. Flat washer 4. Earth cable collar 5. Flat washer

Fig. 16.8

124

ODU grounding

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

ÓÓÓÓÓÓ ÓÓÓÓÓÓ ÓÓÓÓÓÓ ÓÓÓÓÓÓ ÓÓÓÓÓÓ ÓÓÓÓÓÓ

17

17.

17.1

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

FOREWORD

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

17.2

INSTALLATION KIT

Following installation kits are supplied with the equipment depending on different versions: 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 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 system and pole fixing brackets (see Fig. 17.3)

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

125

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TITOLO DEL CAPITOLO

CM.89012.I

•

hybrid mechanical body (see Fig. 17.12)

•

polarization twist disk (see Fig. 17.13)

•

2 ODUs with O–rings and devices for ground connection

17.3

REQUIRED TOOLS FOR MOUNTING (NOT SUPPLIED)

•

N.2 13 mm torque wrench

•

N.1 15 mm torque wrench

•

N.1 17 mm torque wrench

•

N.1 3 mm Allen wrench

•

N.1 2.5 mm Allen wrench

17.4

INSTALLATION PROCEDURE

Installation procedure proceeds according with the following steps: 1+0 version 1.

installation onto the pole of the system

2.

installation of the antenna

3.

installation of ODU

4.

antenna aiming

5.

ODU grounding

1+1 version

126

1.

installation onto the pole of the system

2.

installation of the antenna

3.

installation of hybrid circuit

4.

installation of the two ODUs

5.

antenna aiming

6.

ODU grounding

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

1.

TITOLO DEL CAPITOLO

CM.89012.I

CM.89012.I

17.4.1 Installation onto the pole of the system and the antenna Fig. 17.1 – Set the antenna in such a position as to be able to operate on its rear side. Locate the five threaded holes around antenna flange. Mount centering ring onto antenna flange and tight 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 free drain holes stay at bottom side. Mount bolt type M10x30, in position A leaving it loose of 2 cm approx. With horizontal polarization mount bolt type M10x30 in position D, leaving it loose of 2 cm approx. Fig. 17.2 – Mount antislide strip onto the pole. Place blocks as in Fig. 17.2 following antenna aiming direction. Tighten the strip with screwdriver. Fig. 17.3 – Mount pole ing system with relevant pole fixing brackets following antenna aiming direction as indicated by arrow. Antislide strip should result at the center of ing plate. ing 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 hole E of Fig. 17.5. Secure the system to the pole by means of the pole fixing brackets and relevant fixing bolts. Fig. 17.6 – Rotate the antenna body until the remainder three antenna holes coincide with the three holes. Secure the antenna to the by thightening the relevant ing through 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 by protecting finger hands with gloves.

2.

Bring the ODU with the two hands and position the ODU handle at the bottom side. The ODU handle can assume position of Fig. 17.7 depending on the polarization.

3.

Position the ODU body near the system and align ODU side flange to antenna side flange (see Fig. 17.8). With respect to the flange alignment, turn the ODU body approx. 30° anti–clockwise and then insert the ODU body into the and search for alignment between reference tooth on the (see Fig. 17.8) and ODU body reference tooth (see detail of Fig. 17.9).

4.

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

5.

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

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

127

TITOLO DEL CAPITOLO

1.

CM.89012.I

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 to hybrid like in figure. Tighten progressively and alternatively four screws (7) with four spring washers (8) with the following torque: Tab. 17.1 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. 17.13 – Fix hybrid to system with four bolts (1) taking care of RT1/RT2 position shown 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.

128

1.

Apply silicon grease e.g. RHODOSIL PATE 4” to the O–ring (4) of the Fig. 17.9 by protecting finger hands with gloves.

2.

Bring the ODU with the two hands and position the ODU handle at the bottom side. For 1+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 (horizontal polarization).

3.

Position the ODU body near the system and align ODU side flange to antenna side flange (see Fig. 17.8). With respect to the flange alignment, turn the ODU body approx. 30° anti–clockwise and then insert the ODU body into the and search for alignment between reference tooth on the (see Fig. 17.8) and ODU body reference tooth (see detail of Fig. 17.9).

4.

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

5.

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

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

1.

TITOLO DEL CAPITOLO

CM.89012.I

CM.89012.I

17.5

ANTENNA AIMING

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

Horizontal

± 15° operating on the nut (3) shown in Fig. 17.15, only after having loosen the nuts (7), (8), (9), (10) of Fig. 17.16.

•

vertical

± 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. 17.16 and position it in hole (4), extract nut (2) Fig. 17.16 and position it in hole (6). Operate on vertical adjustment worm screw (2) 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) of Fig. 17.16 and position it in hole (3), extract nut (2) of Fig. 17.16 and position it in hole (5). Operate on vertical adjustment 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 . The bigger marker gives 0° starting aiming position. Once the optimum aiming position is obtained, tighten firmly the four nuts (1), (2), (11) of Fig. 17.16 and (4) of Fig. 17.15 for vertical adjustment and the four nuts (7), (8), (9), (10) of Fig. 17.16 for horizontal adjustment. Tighten with 15 mm wrench and 32 Nm torque.

17.6

GROUNDING

See Fig. 17.17. On ODU grounding can be connected with the available bolt spring washer and flat washers as shown.

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

129

1.

TITOLO DEL CAPITOLO

CM.89012.I

A

D

D

C

B

C

A

B

Vertical polarization

Horizontal polarization

3 mm Allen key 2,5 Nm torque

2 3

A C

1

B

1.

Antenna

2. Calibrated Allen screw 3. Centering ring Fig. 17.1

130

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

1.

TITOLO DEL CAPITOLO

CM.89012.I

CM.89012.I

2

1

1.

Steel belt

2. Plastic blocks

Fig. 17.2

Antislide strip

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

131

1.

TITOLO DEL CAPITOLO

CM.89012.I

1

2 Antenna aiming direction

3

15 mm wrench 32 Nm torque

3

3 1 3

3

1.

Pole fixing brackets

2. Tooth

3

3. Bolt 4. Pole system Fig. 17.3

132

mount on pole

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

1.

TITOLO DEL CAPITOLO

CM.89012.I

CM.89012.I

Antenna aiming direction

1

1.

Tooth

Fig. 17.4

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

133

1.

TITOLO DEL CAPITOLO

CM.89012.I

E

Fig. 17.5

134

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

1.

TITOLO DEL CAPITOLO

CM.89012.I

CM.89012.I

B

C

A

D 15 mm wrench 32 Nm torque

A, B, C, D

Fig. 17.6

Bolt slots

Antenna installation on pole

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

135

1.

TITOLO DEL CAPITOLO

CM.89012.I

Vertical

Fig. 17.7

136

Horizontal

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.

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

1.

TITOLO DEL CAPITOLO

CM.89012.I

CM.89012.I

1

13 mm wrench 6 Nm torque

H H

H H 1 1 H H

H H H: Reference tooth Fig. 17.8

1

system for ODU housing and reference tooth in evidence

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

137

1.

TITOLO DEL CAPITOLO

CM.89012.I

Reference tooth O–ring ODU side flange

”N”

”BNC”

Ground bolt

Fig. 17.9

138

ODU body reference tooth

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

1.

TITOLO DEL CAPITOLO

CM.89012.I

CM.89012.I

30°

Fig. 17.10

ODU housing final position for vertical polarization

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

139

1.

TITOLO DEL CAPITOLO

CM.89012.I

30°

30°

Fig. 17.11

140

ODU housing final position for horizontal polarization

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

1.

TITOLO DEL CAPITOLO

CM.89012.I

CM.89012.I

7 8 1 2 4

6

5

3

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 Fig. 17.12

Hybrid and twist disk

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

141

1.

TITOLO DEL CAPITOLO

CM.89012.I

1 RT1 2 1 RT2

1.

13 mm wrench 18 Nm torque

Bolts

2. Spring washer Fig. 17.13

142

Hybrid mount on pole

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

1.

TITOLO DEL CAPITOLO

CM.89012.I

CM.89012.I

Fig. 17.14

ODU housing final position for 1+1 version

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

143

TITOLO DEL CAPITOLO

1.

CM.89012.I

4

3 13 mm wrench

1 2 13 mm wrench

1.

15 mm wrench 32 Nm torque

Marker

2. Vertical adjustment 3. Horizontal adjustment 4. Bolt Fig. 17.15

144

Vertical and horizontal adjustments

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

1.

TITOLO DEL CAPITOLO

CM.89012.I

CM.89012.I

15 mm wrench 32 Nm torque

15 mm wrench 32 Nm torque

4

11

7

1

3

8

10 9 5

2

6

15 mm wrench 32 Nm torque

15 mm wrench 32 Nm torque

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°

Fig. 17.16

Antenna aiming block

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

145

1.

TITOLO DEL CAPITOLO

CM.89012.I

1 2 3 4 5

1.

Bolt

2. Spring washer 3. Flat washer 4. Earth cable collar 5. Flat washer Fig. 17.17

146

ODU grounding

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

ÓÓÓÓÓÓ ÓÓÓÓÓÓ ÓÓÓÓÓÓ ÓÓÓÓÓÓ ÓÓÓÓÓÓ ÓÓÓÓÓÓ

18

18.

18.1

INSTALLATION ONTO THE POLE OF THE ODU WITH INTEGRATED ANTENNA (KIT V32307, V32308, V32309)

FOREWORD

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

V32307

for ODU with frequency from 10 to 13 GHz

–

V32308

for ODU with frequency from 15 to 38 GHz

–

V32309

for ODU with frequency from 7 to 8 GHz

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

V32307

centring ring for antenna flange from 10 to 13 GHz

–

V32308

centring ring for antenna flange from 15 to 38 GHz

–

V32309

no centring ring (and relevant screws).

18.2

INSTALLATION KIT

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

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

147

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CM.89012.I

1+0 version •

60 to 129 mm pole mounting kit: –

centring ring and relevant screws

–

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

–

1+0 ODU and relevant screws

–

ODU with O–ring and devices for ground connection

1+1 version •

18.3

148

60 to 129 mm pole mounting kit: –

centring ring and relevant screws

–

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

–

1+0 ODU

–

hybrid and relevant screws

–

polarization twist disk and relevant screws

–

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

REQUIRED TOOLS FOR MOUNTING (NOT SUPPLIED)

•

N.1 2.5 mm Allen wrench

•

N.1 3 mm Allen wrench

•

N.1 5 mm Allen wrench

•

N.1 6 mm Allen wrench

•

N.1 13 mm spanner

•

N.2 17 mm spanner.

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

1.

TITOLO DEL CAPITOLO

CM.89012.I

CM.89012.I

18.4

INSTALLATION PROCEDURE

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

4.

installation onto the pole of the assembled structure

5.

installation of ODU

6.

antenna aiming

7.

ODU grounding

1+1 version 1.

antenna polarization

2.

installation of the centring ring on the antenna

3.

installation of 1+0 ODU

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 mm Allen screws around the antenna flange. Unscrew them (use 2.5 mm Allen wrench) and position the antenna flange according on: horizontal wave guide –> vertical polarization, vertical wave guide –> horizontal polarization. Screw again the four Allen screws (torque = 1Nm).

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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 holes around the antenna flange. Mount the centring ring onto antenna flange and tight it with the 3 Allen screws M4 (use 3mm Allen wrench, torque = 2Nm) .

18.5.3 Installation of 1+0 ODU Fig. 18.1 – Mount the onto assembled structure (pole system plus antenna) using the four 6 mm Allen screws (use 6 mm Allen wrench, torque = 18Nm). Two of the four screws, 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 and the four 17 mm screws (use 17 mm spanner, torque = 13Nm); the heads of the screws are inserted 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 ) Fig. 18.2 – Apply silicon grease (e.g. RHODOSIL PATE 4”) on the O–ring by protecting fingers with 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. Position the ODU body near the and align the wave guide of the ODU to the Wave guide of the antenna: respect to the position of wave guide alignment, turn the ODU body approx. 30° counter–clockwise and then insert the ODU body into the and search for matching between reference tooth on the (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 clockwise until “clack” is heard and rotation is stopped. In figure are shown ODU final position for both polarizations. Fig. 18.4 – When ODU positioning is over, secure ODU body on the by tightening bolts (use 17mm spanner, torque = 6Nm).

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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, only after having loosen the three 13 mm nut on the pole . 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 mounting procedures”

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 the polarization twist disk with the position marker down. Insert the O–ring into polarization twist disk. 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 towards H mark. Tighten progressively and alternatively the four screws and spring washer with following torque: Tab. 18.1 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

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Fig. 18.9 – Fix hybrid body to 1+0 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 fingers with 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. Position the ODU body near the and align the wave guide of the ODU to the wave guide of the hybrid: respect to the position of wave guide alignment, turn the ODU body approx. 30° counter–clockwise and then insert the ODU body into the . For 1+1 system the handle of the ODU is always positioned on the right. The polarization twist disk on the hybrid matches the antenna polarization. Fig. 18.10 – When alignment of the reference teeth is achieved, turn the ODU body clockwise until “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 by tightening bolts (use 17 mm spanner, torque = 6 Nm). WARNING: Internal codes (e.g. installation items, antennas, PCB) are here reported only as example. The Manufacturer reserves the right to change them without any previous advice.

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Four 13mm screws Centring ring (not present in V32309) Three 3mm Allen screws (not present in V32309)

Antenna

1+0 Two bushes

Fig. 18.1

1+0 pole mounting

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Reference tooth O–ring ODU wave guide

”N” ”BNC” Ground bolt

Fig. 18.2

154

ODU body reference tooth

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Vertical

Fig. 18.3

Horizontal

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.

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3 1 2

1 5 4

4 1 5

1 2 3

1.

6 mm Allen screw

2.

Bush (diagonally placed)

3.

17 mm Tightening bolts (max torque = 6 Nm)

4.

Reference point for horizontal polarization

5.

Reference point for vertical polarization

Fig. 18.4

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1+0

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

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

Fig. 18.5

ODU housing final position for both polarization

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Horizontal aiming: two 17mm block screws

Vertical aiming: three 13mm block screws Pole

17mm nut for horizontal adjustment of antenna

Internal 5mm Allen screw for vertical adjustment of antenna

Fig. 18.6

158

Antenna aiming

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1 2 3 4 5

1.

Bolt

2. Spring washer 3. Flat washer 4. Earth cable collar 5. Flat washer Fig. 18.7

ODU grounding

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7 8 1 2 4

6

5

3

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 Fig. 18.8

160

Hybrid and twist disk

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Fig. 18.9

Hybrid installation

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Fig. 18.10

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1+1 ODUs installation

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19

19.

19.1

INSTALLATION ONTO THE POLE OF THE 4 GHz ODU WITH SEPARATED ANTENNA (KIT V32323)

INSTALLATION KIT

1+0 version •

Anti–sliding bracket

•

ODU pole and relevant screws

1+0 version •

Anti–sliding bracket

•

ODU pole and relevant screws

•

hybrid and relevant screws

•

Hybrid–ODU connecting cables

19.2

REQUIRED TOOLS FOR MOUNTING (NOT SUPPLIED)

•

N.2 13 mm spanner

•

N.1 15 mm spanner

•

N.1 17 mm spanner.

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19.3

INSTALLATION PROCEDURE

Installation procedure is listed below: •

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

•

1+1 version: installation of the hybrid on the

•

installation of the ODU on the

•

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

1+0/1+1 version: pole installation of the Fig. 19.1 – Install anti–sliding device (1) around the pole. The position of the plastic blocks depends on the position of the (2) and of the relevant hooking pin (3). Hook the 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 the four 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 Fig. 19.2 – Set the hybrid (1) on the (2) in such a way that the connectors are downward and that the holes on the lower side of the hybrid match with the corresponding holes (8) of the Fig. 19.1. Insert the two screws (3) (tightening torque = 7.3 Nm) and tighten the hybrid to the . ODU installation on the Locate the part of the more suitable for the installation of the ODU: both the parts can be used (1+0 version). Fig. 19.2 – Locate the four slots (4) on the (2). Fig. 19.3 – Keeping the knob of the ODU1 downward, partially screw the two screws (2) into the two 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 supplied strip. 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) (tightening torque = 7.3 Nm) and the relevant washer. For the connection of the RF cable follow the label on the bottom of the hybrid: ODU1 (RT1) is that connected to RIM1 of IDU, ODU 2 (RT2) is that connected to RIM2 of IDU.

7 6

5 2 7 6 1 3

4

5 4

8 4 4

Fig. 19.1

Pole installation of the

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4 4

1

2

3

Fig. 19.2

166

Installation of the hybrid on the pole (only for 1+1 version)

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5

1 3

Fig. 19.3

2

Installation of the ODU on the

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RT2

1 RT1

1

Fig. 19.4

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ODU grounding and connection of the cables to hybrid and antenna

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4

Section

Line–up

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20

20.

20.1

LINE–UP OF THE RADIO HOP

LINE–UP OF THE RADIO HOP

The line–up consists of the following steps: •

on site radio terminal installation (perform connections and ODU installation as described 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 be reconfigured on site following the network 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 on line. Run the program and perform the connection to equipment by choosing from menu “Option” the connection made via USB cable. Perform the to the equipment by entering: •

Equipment IP address 7

•

ID (default: SYSTEM)

•

: (default: SIAEMICR)

Proceed to program what above mentioned following this path:

7.

172

•

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

•

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

•

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

•

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

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 radio hop: •

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 you want to check.

–

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

–

On top of the window Tx/Rx power and frequency values are displayed. In case of Tx power and frequency setup proceed to Branch 1/2 and Power/Frequencies submenus.

BER measurement –

Run SCT/LCT program and then perform the connection to the equipment you want to check.

–

Make double click on the selected equipment until main RADIO PDH–AL window is 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 the requirements.

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V 3 2,625 2,25 1,875 1,5 1,125 0,75

dBm

0 –100

Fig. 20.1

174

–80 –70 –60 –50 –40 –30 –20

Detected voltage versus Rf received signal

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21

21.

21.1

LINE–UP OF ETHERNET TRAFFIC (FOR IDU WITH V12252 ETHERNET MODULE ONLY)

GENERAL

This paragraph deals with line–up of V12252 Ethernet module with details of SCT/LCT program related only to Ethernet application. Assuming that the radio link is already in service, with correct frequency, output power and correct antenna alignment, the line up procedure for different kinds of connection set up of a radio 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 switch

switch port 1

Lan–1 Lan–2

port 1 Radio

Lan–1 Lan–2

Radio

Lan–3

Lan–3

Nx2 Mbit/s

Nx2 Mbit/s Local

Fig. 21.1

Remote

Local Lan–1 port to remote Lan–1 port connection

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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 this example we select 16 Mbit/s and modulation 16QAM (max throughput and modulation scheme depend on 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 window it is possible to activate a 2 Mbit/s input/output on the front . 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 with a 8x2 Mbit/s capacity, if we use two 2 Mbit/s the capacity assigned to Ethernet circuits 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 enable Lan–1 and Internal Port, see Fig. 21.4. The other ports should be disabled. The correct cable crossover arrangement must be selected too (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. 21.5 incoming traffic at Lan–1 exits at Internal Port and into Fig. 21.7 incoming traffic at Internal Port exits at lan–1 port. This connection are done for all Untagged traffic and all Tagged packets with Vlan 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 per port settings

2.

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

3.

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

Link Loss Forwarding Histeresys

Output policy for Tagged packets: Level 2 priority, if used, defined for all the ports for incoming packets already Tagged

Click here for Port mapping and VLAN configuration table

Fig. 21.3

Switch general settings

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Fig. 21.4

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Lan–1 interface settings

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Fig. 21.5

Vlan settings for Lan–1

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Incoming Untagged packets at Lan–1 are sent into output part queue following this selection. In this example packets are inserted into queue 0.

Fig. 21.6

Priority setting for Lan–1 and Internal Port

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

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Fig. 21.7

Vlan settings for Internal Port

Fig. 21.8

Vlan Configuration Table

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21.3

CM.89012.I

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

Settings are done to transfer only Tagged traffic within Vlans. We want that Vlan 701, 702, 710 and 1, 2, 3 can into the radio link and all the other Tagged or Untagged packets should be blocked. The line up of Ethernet module is made with the help of LCT/SCT program. Please refer to Fig. 21.2. First selection is Ethernet throughput and modulation scheme, in this example we select 16 Mbit/s and modulation 16QAM (max throughput and modulation scheme depends on 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 window it is possible to activate a 2 Mbit/s input/output on the front . 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 with a 16 Mbit/s capacity if we use two 2 Mbit/s the capacity assigned 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 enable Lan–1 and Internal Port, see Fig. 21.4. The other ports should be disabled. The correct Cable crossover 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 Check as “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 the incoming 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 a member of the Vlan XX, same packet will exit only from ports (Engress Port) which are of Vlan XX. Vlan hip is described into Vlan Configuration Table. A port can be member of no one, one or more Vlans. See Fig. 21.10 for Vlan Configuration Table settings for our example.

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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

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Tagged incoming packet can be treated with FIFO policy or on the basis of their 802.1p priority tag and ToS/DS value for IP packets. There are 4 queue at each output port. The decision about to which output queue to send a packet is defined into Ethernet switch window selections for 802.1p tag. Into Ethernet switch window it is possible to select ToS/DS button to open window ToS/DS, in this window each incoming ToS/DS value is associated with an output queue 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 FIFO policy. 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/DS identifier (into IP frame) only; with “802.1p – IpToS” switch looks first to 802.1p tag and secondly to ToS/DS, see Fig. 21.12; with “IpToS–802.1p” switch looks first to ToS/DS and secondly to Tag 802.1p. Note: with IpToS switch looks to IP packet and ToS/DS doesn’t matter if the packets are tagged with 802.1p or not. In this example incoming tagged are tagged and it is necessary to transfer the packets with no change so they must exit from output ports tagged, see Fig. 21.11 and Fig. 21.12.

Fig. 21.11

184

Add a new Vlan ID to Vlan Configuration Table with output tagged

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Incoming Untagged packets at Lan–1 are sent into output part queue following this selection. In this example packets are inserted into queue 0.

Fig. 21.12

Layer 2 and Layer 3 priority management

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21.4

CM.89012.I

3 TO 1 PORT CONNECTIONS switch

switch port 1

Lan–1 Lan–2

port 1 AL radio

Lan–3

Lan–2

AL radio

Lan–3 Nx2 Mbit/s

Nx2 Mbit/s

Remote

Local

Fig. 21.13

Lan–1

3 to 1 port connections

In this example 3 local port must communicate with corresponding remote ports. All the ports share the same radio channel but traffic originated and directed to Lan1 should be kept separated 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 same requirements. For all connections IP packets with high priority TOS should transferred at minimum delay.

21.5

3 TO 1 PORT CONNECTIONS, UNTAGGED TRAFFIC

SETTINGS

FOR

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 16 Mbit/s and modulation 16QAM (max throughput and modulation scheme depend on 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 window it is possible to activate a 2 Mbit/s input/output on the front . 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 with a 8x2 Mbit/s capacity if we use two 2 Mbit/s the capacity assigned to Ethernet circuits is automatically 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 to Port1. All the used ports must be Enabled. Untagged traffic transits only if the selection for Ingress Filtering Check is disabled at each input port 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 maintain the traffic coming from different separated LANs, Lan–1 with default VID 3301, Lan–2 with default 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

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Fig. 21.15

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Output port properties for VLAN 3301

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Vlan 3301, 3302, 3303 are allowed to exit at Port1 with tags (Tagged). Different default Tag’s allow to keep separate the traffic from Lan1, Lan2 and Lan3 exiting at Port 1. At the remote end the traffic is split and forwarded from Port1 to Lan1, Lan 2 and Lan3 without Tag to preserve the original format.

Default VID assigned by to each port

Fig. 21.16

Typology 3 to 1, Virtual Lan Configuration

With the above settings inside the VLAN configuration Table only Untagged traffic is forwarded accross the bridge. The same settings should be done inside the remote equipment. The above example shows the Virtual Lan Configuration Table in case of a link carrying the traffic of 3 independent LAN’s connected 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/DS value it is possible to open PToS/DS window from Ethernet switch window and select the values of ToS for which the packet is sent to high priority Queue, see Fig. 21.17.

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TOS value description

DS value description Packets with AF43 priority level will go into Queue 3 at all ports

AF43 now goes to Queue 3, with this button AF43 will go to Queue 2

Fig. 21.17

21.6

Output Queue selection on the basis of TOS/DS priority

3 TO 1 PORT CONNECTIONS, SETTINGS FOR TAGGED AND UNTAGGED TRAFFIC

If we want VLAN with Tag 701, 702 and 703 to transit between Lan–1 and Port–1 it is necessary to define Port 1 and Lan 1 as 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 use 2001, 2701, 2760 for Lan–2 and 3001, 3701, 3760 for Lan–3. Connected equipment to Lan–2 port 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/DS value it is possible to open PToS/DS window from Ethernet switch window and select the values of ToS for which the packet is sent to high priority Queue 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

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Fig. 21.19

21.7

Typology 3 to 1, Virtual Lan Configuration Table with Vlan

3 TO 1 CONNECTIONS: EXAMPLES OF PRIORITY MANAGEMENT

Example 1: To assign to Lan–1 and Lan–3 low priority and to Lan–2 high priority, while wanting Tagged and Untagged to be treated in a fair manner on each queue do as follow: select Priority Disable for Lan–1, Lan–2 and Lan–3; select Default Priority Queue equal to Queue 0 for lan–1 and Lan–3 (see Fig. 21.6). Select Default Priority Queue equal to Queue 3 for Lan–2 (as in Fig. 21.20). Outgoing Untagged packets will take priority tag defined into input port, in this case 0. Tagged frames keep their tag. Example 2: Wanting tagged frames to be treated according their actual priority and untagged packets 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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Untagged packet arriving to Lan–2 are sent to output port Queues setting of this folder. 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 queue 0,1,2,3 to port destination priority value; when Disable is selected for this port switch uses the Default Priority Queue for Tagged and Untagged frames, and without really changing Tag into Incoming Tagged frames.

Fig. 21.20

Queue selection

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Fig. 21.21

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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.

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5

Section

Maintenance

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22

22.

22.1

PERIODICAL CHECKS

GENERAL

Periodical checks are used to check correct operation of the radio equipment without the presence 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 from hop 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

23.

23.1

TROUBLESHOOTING

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 be re–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 is switched ON on the IDU 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 equipment upstreams

•

remote tributary loops: usually used to test the two direction link performance making use 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 that appear 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 performed by 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 but relevant 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 equipment failure. See the condition of the others alarm grouping.

•

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

•

202

–

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 when the ODU becomes faulty.

–

RIM failure – power supply alarm along with cable short/open alarms or modulator/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 this happens, replace the ODU.

•

UNIT – This grouping generates alarms when one of the units, the equipment consists of, 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 module failure. An alarm condition causes Led IDU to steady lights up.

Trib. 1–2–3–4

Q3

LCT

48V

IN/OUT

PS TEST R

AL Trib. 5–6–7–8

– +

Fig. 23.1

IDU front

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24

24.

24.1

EQUIPMENT CONFIGURATION /SAVE/. PARAMETER MODIFICATION AND CREATION OF VIRTUAL CONFIGURATIONS.

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. To this purpose it is necessary to , from each network element, equipment configurations and save them on three configuration files. It is advisable to do it upon the first installation. Configuration file on the spare CONTROLLER permits to restore previous operating condition. It is also possible to create virtual configuration without being connected to equipment.

24.2

PROCEDURE

To configure the spare IDU the following must be ed/saved on the file/ed: •

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 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 (for instance radio PDH AL: 2x2, 4x2, 8x2, 16x2 Mbit/s) from which you want to make the .

3.

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

4.

Press push button and select Get Current Type Configuration from Equipment. The system will display the Configuration File window. The window will show the equipment list.

5.

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

6.

Press OK. The system displays the Communication Status window where is pointed out: –

the operation status: in progress/complete.

–

errors area: where error messages relevant to possible abort of the operation are displayed.

At the end of the operation by pressing OK, the system displays, the ed equipment parameters present into the Configuration Wizard window. 7.

Save the ed configuration into a file by selecting Save File As command from File 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 used to save the file.

8.

Press Save push button to finish.

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.

206

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

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3.

Press push button and select Configure Equipment as Current File.

4.

Activate the box relevant to the equipment you wish to 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:

6.

–

the operation status: in progress/completed

–

errors area: where error messages relevant to possible abort of operation are displayed.

Press OK to finish.

24.2.2 Addresses and routing table 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 push button and select Get Current Type Configuration from Equipment. The system will display the Configuration File window.

3.

Select the equipment you wish to a configuration from (normally the local equipment).

4.

Press OK. The system displays the Communication Status window where is pointed out: –

the operation status: in progress

–

errors area: where error messages relavant to possible abort of the operation are displayed.

At the end of the operation, the system displays, the equipment parameter present into the Configuration Wizard window. 5.

Save the ed configuration into a file by selecting Save File As command from File Save Save File As The system will display the Save This Config. File window. Into the proper boxes type the file name (with “cfg” extension) and set the path to be used to save the file.

6.

Press Save push button to finish.

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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 will display the parameters contained into the file.

3.

Press push button and select Configure Equipment as Current File.

4.

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

5.

Press OK. The system will display Type Selection window. Activate boxes IP port addresses configuration e Routing table . If OSPF facility is enabled, you can only select Standard (IP/Communication/OSPF) Settings.

6.

Press OK. The system will show a warning indicating the possibility to procede the or not.

7.

Press OK. The system will show the in progress.

8.

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

24.2.3 Remote Element Table and save

208

1.

Select window Subnetwork Configuration Wizard from menu Tools.

2.

Select equipment Local from Actual Configuration Area and then press Retrieve. In New 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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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 , the list of the remote element included the local.

5.

Press Send to send the list.

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25

25.

25.1

BACK UP FULL EQUIPMENT CONFIGURATION WITHOUT POSSIBILITY OF MODIFYING THE PARAMETERS

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 replacement with spare.

25.2

CONFIGURATION

Foreword: it is advisable to the configuration during the first installation. Proceed as follows: 1.

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

2.

Select “” 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 will be aborted).

4.

Press OK and then select the equipment to be ed from “ 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 end of the will appear the word “done” showing the procedure success.

7.

25.3

Press OK to finish.

CONFIGURATION

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

3.

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

4.

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

5.

Press OK to finish.

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

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6

Section

Programming and supervision

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26

26.

26.1

PROGRAMMING AND SUPERVISION

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 network consisted of different SIAE equipment including ALC family radio equipment.

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

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7

Section

Composition

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27

27.

27.1

COMPOSITION OF THE INDOOR UNIT

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. This P/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 structure

2

A

AL family

3

I

Indoor installation

4 to 7

0069 0073 0076 0078 0079 0080 0081 0084 0085 0086 0087 0088 0089 0090 0091

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16x2 – 75 Ohm – 1+1 16x2 – 75 Ohm – 1+1EOW 16x2 – 75 Ohm – 1+0 16x2 – coax – 1+0 8x2 – 75 – 1+0 8x2 – 120 – 1+0 8x2 – 120 – 1+1 16x2 – 120 – 1+1 8x2 – 75 – 1+1 16x2 – 120 – 1+0 8x2 – 120 – 1+0 EOW 8x2 – 120 – 1+1 EOW 4x2 – 120 – 1+0 V28 4x2 – 120 – 1+1 V28 16x2 – 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.

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28

28.

28.1

COMPOSITION OF OUTDOOR UNIT

GENERAL

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

operating band

•

operating sub–band and sideband

•

part number

•

serial number

•

duplexer frequency

A further label is positioned on the hybrid boby and shows the number of each transceiver and type 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 structure

2

A

AL family

3

O

Outdoor installation

4 to 7

........

Combination describing various band, sub–band and duplexer frequencies

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

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

221

1.

222

TITOLO DEL CAPITOLO

CM.89012.I

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