Installation Notes - Cisco 4G-ANTM-OM-CM Manual

Cisco Aironet 2.4 GHz and 5 GHz Dual-Band Polarization-Diverse Directional Array Antenna (AIR-ANT2566D4M-R)
Obtain Documentation and Submit a Service Request

Select your installation site with safety as well as performance in mind. Remember that electric power lines and phone lines
look alike. For your safety, assume that any overhead line can kill you.

Call your electric power company. Tell them your plans and ask them to come and look at your proposed installation. This
is a small inconvenience considering your life is at stake.

Plan your installation carefully and completely before you begin. Successful raising of a mast or tower is largely a matter of
coordination. Each person should be assigned a specific task, and should know what to do and when to do it. One person
should be in charge of the operation to issue instructions and watch for signs of trouble.

When installing your antenna, remember:
— Do not use a metal ladder.
— Do not work on a wet or windy day.
— Do dress properly—shoes with rubber soles and heels, rubber gloves, long sleeved shirt or jacket.

If the assembly starts to drop, get away from it and let it fall. Remember, the antenna, mast, cable, and metal guy wires are
all excellent conductors of electrical current. Even the slightest touch of any of these parts to a power line completes an
electrical path through the antenna and the installer: You!

If any part of the antenna system should come in contact with a power line, don't touch it or try to remove it yourself. Call
your local power company. They will remove it safely.

If an accident occurs with the power lines, call for qualified emergency help immediately.
For a listing of all the warning statements and their translations, see Translated Safety Warnings for Cisco Aironet Access Points
at:
http://www.cisco.com/c/en/us/td/docs/wireless/access_point/warnings/reference/guide/ap_warn1.html

Installation Notes

Antennas transmit and receive radio signals that are susceptible to RF obstructions and common sources of interference that
can reduce throughput and the range of the device to which they are connected. Follow these guidelines to ensure the best
possible performance:

Install the antenna vertically and mount it with the cables pointing towards the ground.

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 can pass through
and still maintain adequate signal strength. Consider the following before choosing the location for your antenna:
— Signals penetrate paper and vinyl walls with little change to signal strength.
— Signals penetrate only one or two solid and precast concrete walls without degrading signal strength.
— Signals penetrate three or four concrete and wood block walls without degrading signal strength.
— Signals penetrate five or six walls constructed of drywall or wood without degrading signal strength.
— Signals are likely to reflect off a thick metal wall and may not penetrate it at all.
— Signals are likely to reflect off a chain link fence or wire mesh spaced between 1 and 1 1/2 inch. (2.5 and 3.8 cm). The
fence acts as a harmonic reflector that blocks the signal.
481