Cisco Cisco Aironet 1522 Lightweight Outdoor Mesh Access Point Guide De Montage

Use directional antennas and keep them pointed away from each other.

Cable the radios together using a combination of attenuators, combiners, or splitters to achieve a 
total attenuation of at least 60 dB.

For a radiated test bed, the following equation describes the relationships among transmit power, 
antenna gain, attenuation, and receiver sensitivity:

txpwr + tx gain + rx gain - [attenuation due to antenna spacing] < max rx input level

Where:

txpwr = Radio transmit power level

tx gain = transmitter antenna gain

rx gain = receiver antenna gain

For a conducted test bed, the following equation describes the relationships among transmit power, 
antenna gain, and receiver sensitivity:

txpwr - [attenuation due to coaxial components] < max rx input level

Under no circumstances should you connect the antenna port from one access point to the 
antenna port of another access point without using an RF attenuator. If you connect 
antenna ports you must not exceed the maximum survivable receive level of 0 dBm. Never 
exceed 0 dBm or damage to the access point can occur. Using attenuators, combiners, and 
splitters having a total of at least 60 dB of attenuation ensures that the receiver is not 
damaged and PER performance is not degraded.

Read the installation instructions before connecting the system to the power source. 
Statement 1004

Before you begin the installation process:

Become familiar with the procedures for mounting the access point.

Become familiar with the access point connections (Figure 1 on page 7, Figure 2 on page 8, and 
Figure 3 on page 9).

Verify that the switch you are using to connect the controller is configured properly.