User manual

AP User Manual January 2004
Software Release 4.1
5 SITE PLANNING
The following considerations are critical in the choice of a location for the wireless network
infrastructure.
Note: Since each site is unique, typically many additional considerations are critical.
5.1 SPECIFIC MOUNTING CONSIDERATIONS
The Canopy APs must be mounted
• with hardware that the wind and ambient vibrations cannot flex or move.
• where a tower or rooftop is available or can be erected.
• where a grounding system is available.
• with lightning arrestors to transport lightning strikes away from equipment.
• at a proper height:
– higher than the tallest points of objects immediately around them (such as trees,
buildings, and tower legs).
– at least 2 feet (0.6 meters) below the tallest point on the tower, pole, or roof (for
lightning protection).
• in line-of-sight paths
– to the SMs and BH.
– that will not be obstructed by trees as they grow or structures that are later built.
Note: Visual line of sight does not guarantee radio line of sight.
• away from high-RF energy sites (such as AM or FM stations, high-powered antennas,
and live AM radio towers).
5.1.1 Lightning Protection
The network plan must include lightning protection. The following precautions are strongly
recommended:
• Install a lightning protection system for the site.
• Observe all local and national codes that apply to grounding for lightning protection.
• Use a Canopy Surge Suppressor to protect equipment from surges on the Ethernet
cable that is connected to the Canopy system.
5.1.2 Electrical Requirements
The network plan must also conform to applicable country and local codes, such as the NEC
(National Electrical Code) in the U.S.A. If uncertain of code requirements, the planner should
engage the services of a licensed electrician.
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