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 9
,
Figure 4 on page 11
, and
Figure 5 on page 11
).
•
Verify that the switch you are using to connect the controller is configured properly.
