Cisco Cisco 2000 Series Wireless LAN Controller Release Notes

Each year hundreds of people are killed or injured when attempting to install an antenna. In many of 
these cases, the victim was aware of the danger of electrocution, but did not take adequate steps to avoid 
the hazard.

For your safety, and to help you achieve a good installation, read and follow these safety precautions. 
They may save your life!

If you are installing an antenna for the first time, for your own safety as well as others, seek 
professional assistance. Your Cisco sales representative can explain which mounting method to use 
for the size and type antenna you are about to install.

Select your installation site with safety, as well as performance in mind. Remember: 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 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. Successfully raising a mast or 
tower is largely a matter of coordination. Each person should be assigned to 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 an 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 complete an electrical path through the antenna and the installer: you!

If any part of an antenna system should come in contact with a power line, do not touch it or try 
to remove it yourself. Call your local power company. They will remove it safely.

If an accident should occur with the power lines call for qualified emergency help immediately.

Refer to the appropriate quick start guide or installation and configuration guide for instructions on how 
to install your wireless LAN controllers and Cisco Aironet lightweight access points.

To meet regulatory restrictions, all external antenna configurations must be professionally installed.

Personnel installing the wireless LAN controllers and Cisco Aironet lightweight access points must 
understand wireless techniques and grounding methods. The internal-antenna Cisco Aironet lightweight 
access points can be installed by an experienced IT professional.