User's Manual

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3Com®AirProtectPlannerUserGuide
54
Figure 64. Changing Location Properties – Calculations Tab
CalculationSettings:
• SpillageFactor:SpecifiesthesizeoftheareaasamultiplieroftheactuallayoutareaoverwhichPlannerwillassess
theWLANsignalspillage.Forexample,ifyousetthespillagefactorto2,thesystemwillassessthesignalstrength
over2timesalongeachdimension
ofthelayout.Thesystemmaintainsthecenterofthelayoutsothatyoucan
observethespillagesymmetricallyinalldirections.
• RSSICalibration:PlannercalculatestheReceivedSignalStrengthIndicator(RSSI)ateachcellinthelayoutbasedon
idealconditions.ItappliesthisRSSIcalibrationfactorto
accountforun‐modeledobjectslikefurniture,humansand
soon,antenna/feederlosses,RFpropertiesofClientcards,andlayoutinaccuracies.PlannerappliestheCalibration
factorsymmetricallytoallthecells.TherangeforRSSICalibrationis‐40dBto40dB.ThedefaultforRSSIcalibration
factoris‐10dB.
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PathLossModelSettings:
• ApplicationEnvironment:Selecttheapplicationenvironmentfromthedrop‐downlist.
• MinAttenuationFactor:Displaystheminimumattenuationfactorsfor802.11a/nand802.11b/g/ndependingonthe
applicationenvironmentselected.
• MaxAttenuationFactor:Displaysthemaximumattenuationfactorsfor802.11a/nand802.11b/g/ndependingonthe
applicationenvironmentselected.
• ALPHAandBETA:Displaystheadvancedcalculationparameters.
LocationProperties:LocalMaterialRepositoryTab
TheLocalMaterialRepositorytabgivesalistofavailablematerialsintheLocalRepositoryofthat.spmfile.RefertotheLocal
MaterialRepositorysectiontoseethevariousfunctionsyoucanperformfromthistab.