- Cisco Network Router User's Manual

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CiscoAironetAccessPointDeploymentGuide 
CiscoSystems
Copyright©2012CiscoSystems,Inc.Allrightsreserved.
Page25of52
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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
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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.
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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.
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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.
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IDFClosets(TelecommunicationsorOtherElectricalEquipment)
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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.
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Formoreinformationon
interference,seetheseURLs:
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 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
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VeryHighAltitudes
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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.
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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 . 
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