Xirrus Wi-Fi Array XN16, Руководство пользователя

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Wi-Fi Array
30 Installing the Wi-Fi Array
Planning Your Installation
This section provides guidelines and examples to help you plan your Xirrus Wi-Fi
Array deployment to achieve the best overall coverage and performance. We
recommend you conduct a site survey to determine the best location and settings
for each Array you install.
General Deployment Considerations
The Wi-Fi Array’s unique multi-radio architecture generates 360 degrees of
sectored high-gain 802.11a/b/g/n coverage that provides extended range.
However, the number, thickness and location of walls, ceilings or other objects
that the wireless signals must pass through may affect the range. Typical ranges
vary depending on the types of materials and background RF (radio frequency)
noise at your location. To maximize wireless range, follow these basic guidelines:
1. Keep the number of walls and ceilings between the Array and your
receiving devices to a minimum—each wall or ceiling can reduce the
wireless range from between 3 and 90 feet (1 to 30 meters). Position your
devices so that the number of walls or ceilings is minimized.
2. Be aware of the direct line between each device. For example, a wall that
is 1.5 feet thick (half a meter) at 90° is actually almost 3 feet thick (or 1
meter) when viewed at a 45° angle. At an acute 2° degree angle the same
wall is over 42 feet (or 14 meters) thick! For best reception, try to ensure
that your wireless devices are positioned so that signals will travel
straight through a wall or ceiling.
Figure 8. Wall Thickness Considerations
90° 45°
1.5 feet/
.5 m
~ 3 feet/
1 m
> 42 feet\
14 m
2°