NCR RealScan 7837-3000 - Cordless Scanner; RF (Radio Frequency) Module Operation

1-12 Chapter 1: Getting Started
Thebasealsoisthescannerbatterychargerwiththeexternal9VDC
gtotheChargeStatusIndicatortable
othradioto
ed
multipoint‐to‐singlepointapplications,theradio
operatesusingalicensefreeISMband,whichsendsrelativelysmall
tdatarateoveraradiosignalwithrandomly
l
Cordless Scanner

lassembly,
andanRFcommunicationmodule.Thescanengineperformsthebar
nandsensing.Thedecode/controlassembly
tivities
,
powersourceapplied.Onceyouplacethescannerintobase,thebase
greenLEDrespondsaccordin
above.
ThebasecanbepoweredbytheHost(parasiticpowermode).Ifthe
baseisin
parasiticpowermodewithoutthe9VDCpowersource,the
basestillfunctions,butdoesnotchargethebattery.
RF (Radio Frequency) Module Operation
Thecordlesssystemusesastate‐of‐the‐arttwo‐wayBlueto
transmitandreceivedatabetweenthescannerandthebase.Design
forpoint‐to‐pointand
datapacketsat
afas
changingfrequencies,whichmakesthecordlesssystemhighly
responsivetoawidevarietyofdatacollectionapplicationsand
resistanttonoisyRFenvironments.BluetoothClass2powerleve
providesrangeof33feet(10m)dependingontheenvironment.
Thecordlessscannerenablesfastandaccuratebarcodescanningusing
anon‐contactlinearimager. 
Thescanneriscomprisedofalinearimager,adecode/contro
codeimageilluminatio
coordinatesthecentralcommunicationactivities
including:capturing
anddecodingthebarcodeimagedata,performingsoftwareac
(parametermenuing,visualindicatorsupport,lowbatteryindication)
anddatatranslationrequiredforthe hostsystem.TheRF
communicationmoduleperformsthedataexchangebetweenthe
scannerandthebase.