Cisco Aironet Access Point Deployment Guide
Cisco cables carry the part number AIR‐CAB (Aironet Cable) and then a length. For example, a 20’ length of LL cable with RP‐TNC connector is Cisco AIR‐CAB‐020LL‐R. These heavy black cables are not Plenum rated and are primarily for use outdoors or in manufacturing areas.
Access Point Spacing Recommendations
If you have a Wi‐Fi device such as an AP and want to use another AP in the vicinity on a different channel, space the APs approximately six feet (two meters) apart. This recommended distance is based on the assumption that both devices operate in the unlicensed band and do not transmit RF energy more than 23 dB ‐ that is, 200 mW. If higher power is used, space farther apart. Avoid clustering the APs or the antennas from different APs together, since this could degrade performance.
If you have other devices that transmit, move or separate the devices as far apart as reasonable. (This is especially important if they operate in the same frequency ranges; for example, frequency hopping legacy APs or other devices may operate just below or above the 2.4 and 5 GHz band.) Then, check for interference. Test both types of devices at the same time under heavy utilization (load), then characterize each system independently to see whether degradation exists.
Warning: In order to comply with FCC, EU, and EFTA RF exposure limits, antennas should be located at a minimum of 7.9 inches (20 cm) or more from the body of all persons. See the installation guide under Declaration of Conformity for more information.
IDF Closets (Telecommunications or Other Electrical Equipment)
When installing APs near other electrical or telecommunications equipment, keep all wiring and metal away from the antennas, and avoid placing the antennas near electrical lines. Do not route electrical wiring or Ethernet in the near field (6‐15 inches) of the antenna, and try not to install the AP in an electrical closet. If you remote antenna cables from such a closet, you may be required to use Plenum rated cable, so refer to local fire and safety regulations. Remember that the best place for the AP is as close to the users as practical.
For more information on interference, see these URLs:
http://www.cisco.com/en/US/prod/collateral/wireless/ps9391/ps9393/ps9394/prod_white_pa per0900aecd807395a9_ns736_Networking_Solutions_White_Paper.html
http://www.cisco.com/warp/public/cc/pd/witc/ao1200ap/prodlit/wrlan_wp.pdf
http://www.cisco.com/en/US/prod/collateral/wireless/ps5678/ps10981/white_paper_c11‐ 609300.html
Very High Altitudes
While not defined in the specification sheet for the AP 2600 and the AP 3600, these APs passed functional checks after a non‐operational altitude test of 25C @ 15,000 Ft was performed. Additionally, they fully passed a functional test during an operational altitude test of 40C @ 9,843 ft.
All units in the test group were connected to at least one WLAN client and were monitored for continual operation passing traffic, with constant ping testing throughout the operational altitude test.
Cisco Systems
Copyright © 2012 Cisco Systems, Inc. All rights reserved.
Page 25 of 52