Aruba Networks AP85FXLX Manual De Usuario
Aruba AP-85 Outdoor Access Point Series | Installation Guide
Outdoor Planning and Deployment Considerations |
19
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/b/g channel frequencies. Always use a channel
frequency that is furthest away from another signal.
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/b/g 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 or mesh link, changing the antenna direction may improve
the situation.
the situation.
Weather Conditions
When planning wireless bridge or mesh links, you must take into account any extreme weather conditions that are known to
affect your location. Consider these factors:
affect your location. Consider these factors:
z
Temperature: The wireless bridge or mesh link is tested for normal operation in temperatures from
-. Operating in temperatures outside of this range may cause the unit to fail
-. Operating in temperatures outside of this range may cause the unit to fail
z
Wind Velocity: The wireless bridge or mesh link can operate in winds up to. You must consider the known maximum
wind velocity and direction at the site and be sure that any supporting structure, such as a pole, mast, or tower, is built to
withstand this force.
wind velocity and direction at the site and be sure that any supporting structure, such as a pole, mast, or tower, is built to
withstand this force.
z
Lightning: Rain: The wireless bridge or mesh link is weatherproofed against rain. However, it is recommended to apply
weatherproof sealing tape around the Ethernet port and antenna connectors for extra protection. If moisture enters a
connector, it may cause a degradation in performance or even a complete failure of the link.
connector, it may cause a degradation in performance or even a complete failure of the link.
z
Snow and Ice: Falling snow, like rain, has no significant effect on the radio signal. However, a buildup of snow or ice on
antennas may cause the link to fail. In this case, the snow or ice has to be cleared from the antennas to restore operation
of the link.
antennas may cause the link to fail. In this case, the snow or ice has to be cleared from the antennas to restore operation
of the link.
Ethernet Cabling
When a suitable antenna location has been determined, you must plan a cable route from the wireless bridge or mesh link
outdoors to a suitable power and/or network source.
outdoors to a suitable power and/or network source.
Consider these points:
z
The Ethernet cable length should never be longer than 90 m (295 ft).
z
Determine a building entry point for the cable (if applicable).
z
Determine if conduits, bracing, or other structures are required for safety or protection of the cable.
z
For lightning protection at the power injector end of the cable, consider using a lightning arrestor immediately before the
cable enters the building
cable enters the building
Grounding
It is important that the wireless bridge or mesh link, cables, and any supporting structures are properly grounded. Each AP-
85 Series access point includes a grounding screw for attaching a ground wire. Be sure that grounding is available and that it
meets local and national electrical codes. Ground the access point first using the external ground stud on the unit before
making any other connection.
85 Series access point includes a grounding screw for attaching a ground wire. Be sure that grounding is available and that it
meets local and national electrical codes. Ground the access point first using the external ground stud on the unit before
making any other connection.
!
CAUTION
An Aruba Lightning Arrestor, AP-LAR-1, must be installed on each antenna port for protection
against lightning induced surges. Failure to use an AP-LAR-1 can void the warranty of an Aruba
outdoor AP model and renders the AP susceptible to failure from lightning induced surges.