User Manual

18
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scangroupisactive,thenthescangroupisdeselectedandscanningorvotingstops.The
radiothenselectsthechannelorscangroupassignedtheRECALLkey.
Ascangroupisconfiguredusingtheradioprogrammer.Thescangroupconfiguration
cannotbemodifiedandchannelscannotbeaddedtoorremovedfromthescangroupby
theuser.
Ascangroupcanbeconfiguredforeitherscanningorvoting.Eachscangroupcanbe
configuredindividually.
Scanning
Scanningisgenerallyusedtomonitoragroupofunrelatedchannelsforactivity.Theradio
checkseachchannelinthescangroupinturnforactivityandholdsonthefirstchannelwith
avalidsignal.Theconditionstoholdonachannelarethesameasthegeneralun‐mute
conditionsoftheradio.
Whenthesignaldisappearstheradiocontinuestoholdonthechanneluntilthescanhold
timeoutexpires.Ifthescanholdtimeoutexpires,theradioresumesscanning.
OpenScan
InOpenScan,theradioscansthechannelsinthesequenceofthechannellistcheckingfor
activity.
IfthePTTispressedwhileholdingonachannel,theradiotransmitsontheholdchanneland
thescantransmitchannelissettotheholdchannel.WhenthePTTispressedwhile
scanning,theradiotransmitsonthescantransmitchannel.
PriorityScan
InPriorityScan,theradioscansthechannelsinsequencesimilartoopenscanbutchecksa
prioritychannelmoreoftenthantheotherchannels.Thefirst
channelinthescangroupis
theprioritychannel.
IfthePTTispressedwhileholdingonachannel,theradiotransmitsontheholdchannel.
WhenthePTTispressedwhilescanning,theradiotransmitsontheprioritychannel.
VOTING
Votingisgenerallyusedtomonitoragroupof
channelsassociatedwitharepeaternetwork.
Therearetwogeneraltypesofvoting,RSSIvotingandBusyVoting.
RSSIVoting
RSSIvoting(alsocalledSignalStrengthvoting)isusedwithrepeaternetworkswherethe
repeaterstransmitthesameinformationsimultaneouslyondifferentrepeaterfrequencies.