User's Manual

SettingȱupȱtheȱServerȱConsoleȱ

SpectraGuard

ȱEnterpriseȱInstallationȱGuideȱ

86ȱ

CalibrationȱhelpsȱinȱtuningȱRFȱparametersȱusedȱbyȱtheȱsystemȱtoȱcompareȱtheȱAPȱandȱSensorȱpredictionsȱtoȱactualȱ

observations.ȱTheȱsystemȱhasȱaȱrobustȱcalibrationȱtechniqueȱthatȱalsoȱallowsȱmanualȱinterventionȱinȱcaseȱofȱdiscrepancy.ȱUseȱ

theȱfollowingȱstepsȱtoȱcalibrateȱRFȱviews:ȱ

a. Placeȱdevicesȱonȱtheȱfloormap.ȱ

b. Selectȱthe

ȱViewerȱtab.ȱ

c. SelectȱoneȱofȱtheȱAPȱorȱSensorȱviews.ȱ

d. GenerateȱtheȱdesiredȱRFȱCoverageȱmapȱbyȱclickingȱ<Calibration>.ȱ

e. Toȱimproveȱpredictions,ȱfineȬtuneȱtheȱMin.ȱSignalȱDecayȱConstantȱandȱtheȱMax.ȱSignalȱDecayȱConstant.ȱ

Note:ȱMin.ȱSignalȱDecayȱConstantȱspecifiesȱtheȱamountȱofȱsignalȱlossȱthatȱisȱ

acceptableȱforȱregionsȱcloseȱtoȱtheȱtransmitterȱ(Sensor).ȱ

Max.ȱSignalȱDecayȱConstantȱspecifiesȱtheȱamountȱofȱsignalȱlossȱthatȱisȱacceptableȱforȱregionsȱawayȱfromȱtheȱtransmitter.ȱSignalȱlossȱisȱ

directlyȱproportionalȱtoȱtheȱsignalȱdecayȱconstants.ȱ

f. ChangeȱtheȱvaluesȱofȱtheȱSignalȱDecayȱSlopeȱ(Beta)ȱandȱtheȱSignalȱDecayȱInflectionȱ(Alpha).ȱTheȱsystemȱusesȱtheseȱ

parametersȱwhenȱcomputingȱtheȱRFȱandȱdefinesȱtheȱregionȱaroundȱtheȱtransmitterȱthatȱisȱunobstructed.ȱ

Note:ȱWhenȱyouȱchangeȱtheȱvaluesȱofȱMin.ȱSignalȱDecayȱConstant,ȱMax.ȱSignalȱDecayȱ

Constant,

ȱSignalȱDecayȱSlopeȱ(Beta),ȱandȱ

SignalȱDecayȱInflectionȱ(Alpha)ȱtheȱRFȱviewȱandȱLocationȱTrackingȱforȱunobstructedȱregionsȱisȱaffected.ȱInȱtheȱobstructedȱregions,ȱonlyȱ

LocationȱTrackingȱisȱaffected,ȱRFȱviewȱisȱnotȱaffected.ȱ

g. Clickȱ<UpdateȱGraph>ȱtoȱviewȱyourȱselectionȱagainstȱtheȱpredictedȱvalues.ȱ

Important:ȱTheȱPredictedȱvalueȱcurveȱshouldȱoverlapȱtheȱObservedȱvalueȱcurveȱasȱmuchȱasȱpossible.ȱ

h. Clickȱ<Calibrate>ȱtoȱcompleteȱcalibrationȱifȱyouȱhaveȱadjustedȱtheȱparametersȱmanuallyȱsuchȱthatȱtheȱtwoȱcurvesȱareȱ

parallelȱ(butȱnotȱcoinciding).ȱ

i. Clickȱ<Apply>ȱtoȱcommitȱyourȱchanges.ȱ

Figure 116. RF Calibration Dialog