User's Manual

RLX2 Industrial Hotspot Series
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ProSoftTechnology,Inc. Page121of208
February5,2015
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RLX2‐IHNFDFSSupport
Somechannelsinthe5GHzbandaresharedwithradarandmustadheretoDynamic
FrequencySelection(DFS)rules.Thismeansthatiftheradiodetectsthepresenceof
radaronitsoperatingfrequency,itmustautomaticallychangetoanotherfrequency .
MasterRadioOperations
Ifradarisdetectedonanoperatingchannel,transmissionsmustceasewithinthe
requiredChannelClosingTransmissionTime,andmustmovetoanewchannelwithin
therequiredChannelMoveTime.BeforetransmittingonanewDFSchannelthathas
notbeenpreviouslycheckedforradar,theMasterradiomustmo
nitorthechannelfor
theChannelAvailability CheckTimebeforetransmitting.Operationscannotreturntoa
channelwhereradarwasdetectedforatleasttheNon‐OccupancyPeriod.Thevaluesfor
theseparametersarenotedinthetablebelow:
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Parameter FCCValue ETSIValue
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ETSIValue
5.600–5.650GHz
(Channels120,124,&128)
ChannelAvailability
CheckTime
60seconds 60seconds 10minutes
ChannelMoveTime 10seconds(12seconds
for“longpulse”radar
10seconds 10seconds
ChannelClosing
TransmissionTime
200milliseconds(plusup
to60millisecondsover
10seconds)
1second 1second
Non‐OccupancyPeriod 30minutes 30minutes 30minutes
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IfaMasterradiodetectsradar,itissuesachannelchangeannouncementtoallClients
andRepeatersinthenetwork.ThenitmovestoanewchannelwithintheCh annelMove
Time.(Typically,thismovetimeis500millisecondsorless.)Iftheselectedchannelwas
notpreviouslycheckedfortheprese
nceofradar,theMasterradiomustdosoforthe
ChannelAvailabilityCheckTimebeforeitcanbegintotransmit.Ifthenewly‐selected
channelisnotaDFSchannel,orifthechannelwaspreviouslymonitoredforradarsince
theradiowaspoweredon,transmissionscanbeginimmediately.