Chapter 1: Product Information 1-7
ThetwoauxiliaryRS232portsarebothlocatedatthebackoftheunit.Port1(located
ontherightsidewhenfacingtherearoftheunit)isthemostconvenientportfor
connectingahand–heldscanner.
Eachperipheraldeviceusingaperipheralportrequiresspecialprogramming.The
totalcombined
+5VcurrentfortheoneUSBperipheralportandtwoRS232auxiliary
portsshouldbelessthan750mA.Thetotalcombined+12VcurrentfortwoRS232
auxiliaryportsshouldbelessthan350mA.
USB
TheRealScan74includesasingleUSBPeripheralport,aMain(POS)USB
CommunicationPort,andaMain(POS)RS232/RS485CommunicationPort.These
portsareincludedtopermiteasyconnectionsforperipheralsandtoimprovethe
scanner’scapabilitiesbypermittingthedevicestobehot‐swappable(connectingor
disconnectingdeviceswithout
restartingtheunit).
TheUSBperipheralportislocatedontheleft‐mostsideontherearoftheunit.The
purposeoftheUSBperipheralportistopermitotherperipheraldeviceswithIBM
SurePOSUSBhandheldinterfacestoconnecttothehostterminalthroughthe
RealScan74.
The
Main(POS)USBandMain(POS)RS232/RS485CommunicationPortsarelocated
ontherightsideatthebackoftheunit.Theseportsareusedtoconnectthescannerto
thehostterminal.
Thetotalcombined+5VcurrentfortheoneUSBperipheralportplustwoAuxiliary
RS232portsshouldbe
lessthan750mA.Themaximum+5VcurrentfortheUSB
peripheralportshouldbelessthan500mA.Thetotalcombined+12Vcurrentfortwo
RS232auxiliaryportsshouldbelessthan350mA.
TheRealScan74iscompatiblewithboththeNCR2356andNCR2357Handheld
scanners.
Note: Normally,otherSurePOS–compliant
handheldscannersarecompatiblewith
theRealScan74.However,NCRrecommendsathoroughintegrationtestingbefore
usingany3rd–partyhandheldscanner.
Firmware Flashing
TheRealScan74includesFirmwareFlashing.Thispermitsupgradestothescanner’s
firmware.ThelatestfirmwaremaybedownloadedfromNCRwebsitethenflashedto
thescannerthroughaPC,POSterminal,oraflashdrive.Thesoftwarecomesintwo
forms.Thefirstoneisfreefrom
http://www5.ncr.com/support/support_drivers_patches.asp?Class=retail_RealScan.The
othersprovidevariousEnterprisefunctionsandaresoldseparately.