NCR RealPOS 70 - Operator Display; LCD Panel; Lvds

1-20 Chapter 1: Product Overview
Operator Display
Themotherboard,throughtheLVDSAdapterBoard,supportsan
integratedDisplayHeadwithanLVDSTFTLCDpanel.
LCD Panel
The7402providesthreeoperatordisplayoptions.
• 12.1”DualbulbLVDSTFTdisplay(SharpLQ121S1DG41)
• 15”DualbulbLVDSTFTdisplay(SharpLQ150X1LGN2H).
• 17”QuadbulbLVDSTFTdisplay(SharpLM170E01‐A4).
Thedisplayheadhasthefollowingcharacteristics:
• LVDSinterfaceusedtocontroltheLCD
•
RS‐232interfaceusedtocommunicatewiththetouchscreen
controller(locatedonRetailDaughterCard)
• Thedisplayheaddrawsamaximumof1.5AfromthepoweredRS‐
232interface
LVDS
LVDS(LowVoltageDifferentialSignaling)isanimprovementoverthe
traditionalparallelinterface.LCDimagedataissenton4pairsofwires
ratherthanon20individualdatalines.TheIntelchipsetdrivesLVDS
directlywithnoadditionallogicrequired.AdvantagesofLVDS
include:
• ReducesLCDCablecomplexity
•
Dramaticallyreducesradiatedemissions
• Improvesrobustnessofdisplaysignaltiming
• Supportslongercablelengthuptoseveralfeetifrequired