User manual

SM User Manual January 2004
Software Release 4.1
5.2.1 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.
5.2.2 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.
5.3 GENERAL RF CONSIDERATIONS
The network planner must account for the following general characteristics of RF transmission and
reception.
5.3.1 Vertical Beam Width
The transmitted beam in the vertical dimension covers more area beyond the beam center. The
Canopy System Calculator page
BeamwidthRadiiCalcPage.xls automatically calculates the radii of
the beam coverage area. Figure 17 displays an image of this file.
Issue 5 Page 48 of 119