Cisco Systems IDFClosets(TelecommunicationsorOtherElectricalEquipment), VeryHighAltitudes

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CiscoAironetAccessPointDeploymentGuide 
CiscoSystems
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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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