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5 Lightning Protection
39
5 Lightning Protection
This section provides instructions for protecting PTP 500 installations against lightning strike.
The purpose of lightning protection is to protect structures, equipment and people against
lightning by conducting the lightning current to ground via a separate preferential solid path.
The following topics are described in this section:
• 5.1 Lightning Protection Zones
• 5.2 LPU Detailed Installation
• 5.3 LPU Kit
• 5.4 LPU Installation Wiring
• 5.5 LPU Installation Diagram
This
section should be treated as a guide only. The actual degree of lightning protection
required depends on local conditions and weather patterns and applicable local regulations.
Full details of lightning protection methods and requirements can be found in the international
standards IEC 61024-1 and IEC 61312-1, the U.S. National Electric Code ANSI/NFPA No.
70-1984 or section 54 of the Canadian Electric Code.
CAUTION
EMD (Lightning) damage is not covered under standard warranty. The
recommendations in this user manual, when implemented correctly, give the user the
best protection from the harmful effects of EMD. However 100% protection is neither
implied nor possible.
5.1 Lightning Protection Zones
When the ODU is installed on a mast, tower or wall, it may be in one of two possible lightning
protection zones :
• Zone A: In this zone a direct lighting strike is possible. Do not mount the ODU in this
zone.
• Zone B: In this zone, direct EMD (Lightning) effects are still possible, but mounting in this
zone significantly reduces the possibility of a direct strike. Mount the ODU in this zone.
The zones are determined using the ‘rolling sphere method’: an imaginary sphere, typically 50
meter in radius, is rolled over the structure. All structure points that contact the sphere
indicate the zone (A) where a direct strike is possible. Similarly points that do not contact the
sphere indicate a zone (B) where a direct strike is less likely.
- PTP 500 Series 1
- User Guide 1
- MOTOROLA, Inc 2
- Contents 3
- List of Figures 12
- List of Tables 17
- List of Tables 19
- List of Equations 20
- 1 About This User Guide 21
- 1.2 Contact Information 22
- 1.3.2 Terminology 23
- 1.4 Getting Additional Help 24
- 1.5 Repair and Service 24
- 1.6 Warranty 25
- 1.7 Electrical Safety 25
- 1.8 RF Safety 27
- 1.9.1 General 30
- 1.9.6 Registration of Links 31
- 2 Product Description 32
- 2.2 Typical Deployment 33
- 2.3 Frequency Variants 34
- 2.4 Other Product Variants 34
- 2.5 Network Connection 34
- 2.6 Outdoor Unit (ODU) 35
- 2.7.2 ODU, LAN and Recovery 37
- 2.7.3 DC In and Out 37
- 2.7.5 Mains Connection 38
- 2.10 Cables and Connectors 40
- 2.12 Mounting Brackets 42
- 3 Product Features 43
- 3.2 Management Function 44
- 3.6 Upgradeable Software 45
- 3.7 Networking Information 45
- 3.8 Link Mode Optimization 46
- 3.9 Telecoms Circuits 47
- 3.10 Radar Avoidance 48
- 4 Planning Considerations 49
- 4.5 Link Planning 52
- 4.5.3 PTP LINKPlanner 53
- 4.7 Wind Loading 54
- 4.7.3 Wind Speed Statistics 56
- 4.8.1 Calculating Path Loss 57
- 4.8.2 Adaptive Modulation 57
- 5 Lightning Protection 59
- 5.3 LPU Kit 63
- 5.4 LPU Installation Wiring 63
- 6 Installation 67
- 6.1 Installation Support 68
- 6.2 Legal Disclaimer 68
- 6.3 Preparation 68
- 6.4 Mounting the ODUs 69
- 6.4.3 Hoist and Safety Loop 72
- 6.5 Connecting Up 73
- 6.5.4 Routing the Cable 78
- 6.5.10 Powering Up 85
- 6.6.3 DVM Alignment 88
- 6.6.4 Adjust Power Settings 89
- 6.6.5 Disarm on Completion 90
- 7 Web Page Reference 91
- 7.2 Home (System Summary) 93
- 7.2.2 System Alarms 95
- 7.3 System Status 98
- 7.3.1 Histogram Data 102
- 7.4 System Administration 103
- 7.5 Configuration 104
- 7.5.2 LAN Configuration 106
- 7.5.4 Save and Restore 113
- 1Figure 49 114
- 7.6 Statistics 119
- 7.6.1 Detailed Counters 122
- 7.7 Installation Wizard 124
- 7.7.2 Manual Configuration 126
- 7.7.6 Disarm Installation 137
- 7.7.7 Graphical Install 139
- 7.8 Software Upgrade 140
- 7.9 Spectrum Management 144
- 7.9.3 Measurement Analysis 145
- 7 Web Page Reference 147
- 7.9.6 Barring Channels 150
- 7.10 Remote Management 158
- 7.10.5 Diagnostics Alarms 161
- 7.10.6 SNMP Configuration 161
- 7.10.9 Setting the clock 163
- 7.11 Diagnostics Plotter 164
- 7.11.2 CSV Download 166
- 7.12 Change Password 167
- 7.13 License Key 167
- 7.14 Properties 169
- 7.15 Reboot 170
- 8 Recovery Mode 171
- 8.2 Upgrade Software Image 173
- 8.4 Erase Configuration 176
- 8.6 Reboot 180
- 9.1 Test Link End Hardware 181
- 9.1.1 Power LED is Off 183
- 9.1.2 Power LED is Flashing 184
- 9.1.4 No Ethernet Activity 185
- 9.1.7 Test RJ45 Resistance 186
- 9.2 Test Radio Link 188
- 9.3 Lightning Strike 189
- 10.1 Product Description 190
- 10.2 Software/Features 191
- 10.2.2 Configuration Pages 192
- 10.2.3 Installation Pages 193
- 10.4 Link Budget 196
- 10.6 Antenna Choices 197
- 10.7 Installation 198
- 10.7.5 Mounting the antennas 199
- 10.7.6 Alignment Process 200
- 10.8.1 ODU Mounted Outdoors 203
- 10.8.2 ODU Mounted Indoors 204
- 11 E1/T1 Installation Guide 205
- 12 Data Rate Calculations 209
- 12.2.2 Example 210
- 13 AES Encryption 217
- 13.3.1 License Keys 218
- 15 Legal Notices 224
- 15.1.2 Grant of License 225
- 15.1.3 Conditions of Use 225
- 15.1.4 Title; Restrictions 227
- 15.1.5 Confidentiality 227
- 15.1.7 Transfer 228
- 15.1.8 Updates 228
- 15.1.9 Maintenance 229
- 15.1.10 Disclaimer 229
- 15.1.12 U.S. Government 230
- 15.1.13 Term of License 230
- 15.1.14 Governing Law 230
- 15.1.15 Assignment 230
- 15.1.17 Entire Agreement 231
- 15.3 Limit of Liability 233
- The declaration of 242
- 17 FAQs 278
- 18 Glossary 280
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