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6
Site Planning
6.1
Site Selection Criteria
The following are guidelines for selecting the installation location of the Canopy 150/300 Mb
BH ODU and 150/300 PIDU.
6.1.1
ODU Site Selection
When selecting a site for the ODU the following should be taken into consideration:
•
That it is not possible for people to stand or walk inadvertently in front of the antenna.
•
Height and location to achieve the best radio path
•
Height in relation to other objects with regard to lightning strikes
•
Protection from the weather
•
Aesthetics and planning permission issues
•
Distance from ODU and connected Network equipment (Maximum cable run ODU to
connected equipment is 100m)
•
Distance from the 150/300 PIDU to the ODU (Maximum cable run 150/300 PIDU to ODU
is 100m when using the 1000BaseT interface)
6.1.2
150/300 PIDU Site Selection
When selecting a site for the 150/300 PIDU the following should be taken into consideration:
•
Availability of a mains electricity supply
•
Accessibility for viewing status indicators and pressing reset switch (See section 3.3.2
"The Power Indoor Unit (150/300 Mbps Backhaul PIDU)" and section 10 "Fault Finding"
•
Distance from ODU and network equipment (Maximum cable run ODU to connected
equipment is 100m)
•
Distance from the ODU to the 150/300 PIDU (Maximum cable run ODU to 150/300 PIDU
is 100m when using the 1000BaseT interface)
6.1.3
Path Loss Considerations
The path loss is the amount of attenuation the radio signal undergoes between the two ends
of the link. The path loss is the sum of the attenuation of the path if there were no obstacles in
the way (Free Space Path Loss), the attenuation caused by obstacles (Excess Path Loss)
and a margin to allow for possible fading of the radio signal (Fade Margin).
Where
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