User's Manual
Table Of Contents
- 1 About this Guide
- 2 Introduction to the Access Point
- 3 Unpacking the Access Point
- 4 Configurations
- 5 Becoming Familiar With the Access Point
- 6 Network Deployment Examples
- 7 Preparing the Access Point
- 8 Deploying the Access Point
- 9 Declarations of Conformity and Regulatory Information
- Manufacturers Federal Communication Commission Declaration of Conformity Statement
- VCCI Statement for Japan
- Guidelines for Operating Cisco Aironet Access Points in Japan
- Statement 371-Power Cable and AC Adapter
- Industry Canada
- Canadian Compliance Statement
- European Community, Switzerland, Norway, Iceland, and Liechtenstein
- Declaration of Conformity with regard to the R&TTE Directive 1999/5/EC & Medical Directive 93/42/EEC
- Declaration of Conformity for RF Exposure
- Administrative Rules for Cisco Aironet Access Points in Taiwan
- Operation of Cisco Aironet Access Points in Brazil
- Declaration of Conformity Statements
- 10 In Case of Difficulty
- 11 Cisco 90-Day Limited Hardware Warranty Terms
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To avoid receiver damage and PER degradation, you can use one of the following techniques:
• Separate the omnidirectional antennas by at least 2 ft (0.6 m) to avoid receiver damage or by at
least 25 ft (7.6 m) to avoid PER degradation.
• Reduce the configured transmit power to the minimum level.
• 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 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.