Access Point Spacing Recommendations; Installations In Idf Closets (Telecommunications Or Other Electrical Equipment); Installations At Very High Altitudes - Cisco Aironet 1700 Deployment Manual

Access Point Spacing Recommendations

If you have a Wi-Fi device such as an AP and you are going to use another AP in the vicinity on a different channel, it is
recommended that you space each AP apart by approximately 6 Ft (2 meters). Avoid clustering the APs or the antennas from
different APs together because this could cause degradation in performance. 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 the APs farther apart.
Should you have other devices that transmit, especially if they operate in the same frequency ranges, for example, frequency
hopping legacy APs or other devices that operate close in frequency to those of the AP (think below or above the 2.4 and 5 GHz
band), you should consider moving or separating the devices as far apart as can reasonably be done. After you have done this,
check for interference by testing both devices at the same time under heavy utilization (load) and then characterize each system
independently to see how much, if any, degradation exists.
In order to comply with FCC, EU, and EFTA RF exposure limits, antennas should be located at a
Warning
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 on this.

Installations in 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 wiring electrical or Ethernet in the near field (6-15 inches)
from the antenna. Try to refrain from installing the AP in the electrical closet because the best place for the AP is as close to
users as possible/practical. If you have remote antenna cables from such a closet, you may be required to use Plenum rated
cable (see local fire/safety regulations for more on this).
Below are a few URLs for understanding interference:
http://www.cisco.com/en/US/prod/collateral/wireless/ps9391/ps9393/ps9394/prod_white_paper0900aecd807395a9_ns736_N
etworking_Solutions_White_Paper.html
http://www.cisco.com/en/US/prod/collateral/wireless/ps5678/ps10981/white_paper_c11-609300.html

Installations at Very High Altitudes

While not defined in the specification sheet for the AP 3600 and AP 3700, 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 monitored for continual operation passing traffic,
while performing constant ping testing throughout the operational altitude test.
Installations Using a Common or Distributed Antenna System (DAS)
Due to the dual-band nature of the antenna system on the AP 3700 and AP 3600, along with key features such as ClientLink
beamforming, it is not recommended for deployments on DAS.
Customers wishing to integrate a Wi-Fi over DAS solution should understand that Cisco does not certify, endorse, or provide
RF support for Wi-Fi deployments over any DAS.
The DAS vendor and/or systems integrator is solely responsible for the support of the DAS products. The DAS vendor and/or
systems integrator also provides adequate RF coverage and supports any RF related issues. This support includes, but is not
exclusive to location accuracy, RF coverage, roaming issues related to RF, multipath issues, and scalability.
Cisco Aironet Series 1700/2700/3700 Access Point Deployment Guide
Cisco Aironet Series 3700 Access Point