MobileODT EVA System - Recommended Separation Distances

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EVASystemUserManual
No.10LB038
Rev.04
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Page33of86
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NOTE1At80MHzand800MHz,thehigherfrequencyrangeapplies.
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NOTE2Theseguidelinesmaynotapplyinallsituations.Electromagneticpropagationisaffectedbyabsorptionandreflectionfrom
structures,objects,andpeople.
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a.Fieldstrengthsfromfixedtransmitters,suchasbasestationsforradio(cellular/cordless)telephonesandlandmobileradios,amateur
radio,AMandFMradiobroadcast,andTVbroadcastcannotbepredictedtheoreticallywithaccuracy.Toassesstheelectromagnetic
environmentduetofixedRFtransmitters,anelectromagneticsitesurveyshouldbeconsidered.Ifthemeasuredfieldstrengthin
thelocationinwhichtheEVASystemisusedexceedstheapplicableRFcompliancelevelabove,theEVASystemshouldbe
observedtoverifynormaloperation.Ifabnormalperformanceisobserved,additionalmeasuresmaybenecessary,suchasre
orientingorrelocatingtheEVASystem.
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b.Overthefrequencyrange150kHzto80MHz,fieldstrengthsshouldbelessthan3V/m.
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8.3. Recommendedseparationdistances
TheEVASystemisintendedforuseinanelectromagneticenvironmentinwhichradiatedradiofrequency
disturbancesarecontrolled.
Theuserand/orinstalleroftheunitcanhelppreventelectromagneticinterferencebymaintaininga
minimumdistancebetweenportableandmobileradiofrequencycommunicationsequipment(emitters)and
theEVASystem,accordingtothemaximumoutputpoweroftheequipment,asrecommendedinthetable
below.
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Table6
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Recommendedseparationdistancesbetween
portableandmobileRFcommunicationsequipmentandtheEVASystem
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Rated
maximum
outputpower
oftransmitter
Watts[W]
Separationdistanceaccordingtofrequencyoftransmitter(inmeters)
Meters[m]
80MHzto2.5GHz
d=6/E√P
0.01
0.06
0.1
0.19
1
0.6
10
1.90
100
6
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