Cisco Cisco Aironet 3500e Access Point 데이터 시트

When installing your antenna, do not use a metal ladder. Do dress properly: 
shoes with rubber soles and heels, rubber gloves, and a long sleeved shirt or 
jacket.

If an accident or emergency occurs with the power lines, call for qualified 
emergency help immediately.

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:

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.

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.

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:

Signals penetrate paper, vinyl and drywall the easiest. A signal can 
penetrate five or six walls constructed of drywall or wood.

Signals are more heavily attenuated passing through concrete and 
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.