Cisco Cisco Aironet 3500p Access Point Installationsanleitung
Installation Notes
8
Cisco Aironet Six-Element Dual-Band MIMO Patch Array Antenna (AIR-ANT25137NP-R)
OL-23461-01
Installation Notes
Because antennas transmit and receive radio signals, they are susceptible to RF
obstructions and common sources of interference that can reduce throughput and
range of the device to which they are connected. Follow these guidelines to ensure
the best possible performance:
obstructions and common sources of interference that can reduce throughput and
range of the device to which they are connected. Follow these guidelines to ensure
the best possible performance:
•
Mount the antenna to utilize its propagation characteristics. This antenna is
designed to radiate energy in a somewhat narrow beam from the front of the
antenna. It should be aimed into the intended coverage area.
designed to radiate energy in a somewhat narrow beam from the front of the
antenna. It should be aimed into the intended coverage area.
•
Keep the antenna away from metal obstructions such as heating and
air-conditioning ducts, large ceiling trusses, building superstructures, and
major power cabling runs. If necessary, use a rigid conduit to lower the
antenna away from these obstructions.
air-conditioning ducts, large ceiling trusses, building superstructures, and
major power cabling runs. If necessary, use a rigid conduit to lower the
antenna away from these obstructions.
•
The density of the materials used in a building’s construction determines the
number of walls the signal must pass through and still maintain adequate
coverage. Consider the following before choosing the location to install your
antenna:
number of walls the signal must pass through and still maintain adequate
coverage. Consider the following before choosing the location to install your
antenna:
–
Signals penetrate paper, vinyl and drywall the easiest. A signal can
penetrate five or six walls constructed of drywall or wood.
penetrate five or six walls constructed of drywall or wood.
–
Signals are more heavily attenuated passing through concrete and
solid-wood walls.
solid-wood walls.
–
Signals often reflect off thick metal walls and may not penetrate at all.
•
Install the antenna away from microwave ovens and 2-GHz cordless phones.
These products can cause signal interference because they operate in the same
frequency range as the device to which your antenna is connected.
These products can cause signal interference because they operate in the same
frequency range as the device to which your antenna is connected.
Choosing a Mounting Location
The antenna should be mounted clear of any obstructions to the side or front of
the enclosure. Keep in mind that this antenna should be aimed into the intended
coverage area, so you should mount the antenna so that the desired mechanical tilt
can be achieved. If possible, mount the antenna near the access point so you can
use the shortest possible connecting cables.
the enclosure. Keep in mind that this antenna should be aimed into the intended
coverage area, so you should mount the antenna so that the desired mechanical tilt
can be achieved. If possible, mount the antenna near the access point so you can
use the shortest possible connecting cables.