User's Manual
Table Of Contents
- interWave WaveNet Link CX User Manual
- One - System Description
- 1-1 General
- 1-2 System Overview
- 1-3 Features
- 1-4 LinkCX Basic Structure
- 1-4.1 Radio Links
- 1-4.2 Data Stream
- 1-4.3 LinkCX Models
- 1-4.4 Mounting and Antenna Alignment
- 1-4.5 Interface Connectors and Indicators
- 1-4.6 Cables
- 1-4.7 Integral Antenna
- 1-4.8 External Antenna
- 1-4.9 Configuration, Operation, and Monitoring
- 1-4.10 SNMP
- 1-4.11 LinkCX Network Management Architecture
- 1-4.12 NMS Connectivity
- 1-4.13 Web-Based GUI Access Security
- 1-4.14 GUI Functions
- 1-5 Typical Applications
- 1-5.1 Internet (ISP)
- 1-5.2 Private Network Wireless Bridged LANs and WANs
- 1-5.3 PCS/PCN and Cellular Networks
- 1-5.4 Wireless Local Loop Networks and Local Exchange Bypass
- 1-5.5 Business Bypass and Local Exchange Bypass
- 1-5.6 Backhaul for Wireless MTU and MTU Access
- 1-5.7 Wireless Mesh Backhaul Networks
- 1-5.8 Wireless ATM Mesh Distribution with StreamNet
- 1-6 Specifications
- Two - Installation Steering Guide
- Three - Installation Planning
- Four - Installing the Link CX
- Five - Final Link CX Setup
- Six - Monitoring and Trend Analysis
- Seven - Troubleshooting the Link CX
- Appendix 1 - Interface Cable Pinouts
- Appendix 2 - Technical Specifications
- Appendix 3 - Using the Web-Based GUI User Interface
- Appendix 4 - Grounding and Lightning Protection
- Appendix 4 - Enterprise MIBs and Traps
Grounding and Lightning Protection 109
A4-3 Lightning Protection
Radio sites can be particularly prone to lightning strikes by virtue of their normally exposed locations
and the presence of relatively tall antenna support structures.
Reference should also be made to various publications, some of which are listed in the bibliography.
Any site owner or user in doubt about the protection requirements for a particular location should
contact the appropriate authority.
A4-3.1 Purposes
The purposes of any protection arrangement should be to:
• Provide a suitable path to ground for the lightning current.
• Ensure adequate bonding between structures and all metalwork on the site and the common
grounding system in order to reduce side flashing.
• Prevent the entry of flashes or surges into the building.
The resistance to ground should be kept to a minimum; a value of less than 10 Ohms is recommended.
Ideally, and most important, the system should be at equal potential across the entire site.
Certain authorities and service providers have their own particular practices that have to be followed
where applicable.
Protection arrangements vary considerably, from very simple sites to complicated sites with multiple
buildings, antenna support structures, and associated equipment. Ensuring adequate protection may
also involve integration with and upgrading of existing systems.
A4-3.2 Lightning Conductors
Down conductors, bonding interconnections, ground rings, and radial tapes should be of uninsulated
000 AWG copper cable or solid copper tape with a minimum cross section of 25 mm by 3 mm, with all
connections protected by nonreactive paste.
Protected test points should be included if appropriate, and sacrificial ground lugs should be clearly
marked and easily accessible for periodic inspection.
A4-3.3 Grounding Antenna Support Structures
A structure generally acts as its own lightning conductor and, therefore, does not require an additional
conductor from the top to the base. A lightning rod may be required to extend the zone of protection to
equipment mounted on the top of the structure. The lightning rod should extend 2.5 m above the
highest equipment.
It is not possible to provide and guarantee complete protection from the
effects of lightning; however, risks of this sort can be significantly reduced
by careful attention to grounding, protection devices, and the layout of
the site itself.