User's Manual

25
For a radiated test bed, the following equation describes the relationships among transmit power, antenna
gain, attenuation, and receiver sensitivity:
txpwr + tx antenna gain + rx ant 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 RF Attenuator components] < max rx input level
(0 dbm)
Caution 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.
Before You Begin
Warning 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 (see the AP Pole/Wall Mount, page
17).
• Become familiar with the access point connections (Figure 1 on page 8, Figure 4 on page 10, and
Figure 5 on page 10).
• Verify that the switch you are using to connect the controller is configured properly.