Quidway WB2011, Руководство пользователя

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Radio Path Planning
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• Avoid placing the wireless bridge too close to any metallic, reflective surfaces, such
as roof-installed air-conditioning equipment, tinted windows, wire fences, or water
pipes
• The wireless bridge antennas at both ends of the link must be positioned with the
same polarization direction, either horizontal or vertical
Antenna Polarization — The wireless bridge’s antenna sends a radio
signal that is polarized in a particular direction. The antenna’s receive sensitivity is
also higher for radio signals that have the same polarization. To maximize the
performance of the wireless link, both antennas must be set to the same polarization
direction. The antenna polarization is marked on the wireless bridge, as indicated in
the following figure.
Radio Interference
The avoidance of radio interference is an important part of wireless link planning.
Interference is caused by other radio transmissions using the same or an adjacent
channel frequency. You should first scan your proposed site using a spectrum
analyzer to determine if there are any strong radio signals using the 802.11a
channel frequencies. Always use a channel frequency that is furthest away from
another signal.
If radio interference is still a problem with your wireless bridge link, changing the
antenna polarization direction may improve the situation.
Weather Conditions
When planning wireless bridge links, you must take into account any extreme
weather conditions that are known to affect your location. Consider these factors:
• Temperature — The wireless bridge is tested for normal operation in temperatures
from -33°C to 55°C. Operating in temperatures outside of this range may cause the
unit to fail.
• Wind Velocity — The wireless bridge can operate in winds up to 90 MPH and
survive higher wind speeds up to 125 MPH. You must consider the known
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