Elo TouchSystems IntelliTouch SecureTouch manual Mounting the Touchscreen

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Mounting the Touchscreen

When preparing the touchscreen for mounting to the LCD, major considerations are:

•Reasonable mechanical alignment with the display.

•Mounting materials and methods.

•A complete dust seal between the touchscreen and the LCD.

•A mounting technique that evenly supports the touchscreen on at least two opposite edges. Elo recommends double-sided tape on all sides of the LCD.

•Creating enough space between the touchscreen and the bezel to accommodate the touchscreen and the transducers. Adequate spacing can normally be accomplished by:

1 trimming or milling the inside of the bezel.

2 using spacers to move the LCD back in the chassis.

3 using spacers to move the bezel away from the touchscreen. A combination of moving the LCD back with spacers and trimming the bezel is the usual solution.

•The seal between the touchscreen and the display bezel.

The last three considerations listed above should determine the nominal thickness of the spacers to be used.

Many monitors will have sufficient space in the bezel to allow the touchscreen face to rest against the lip of the bezel, with the lip touching the active region of the touchscreen. However, the transducers should not be in contact with the bezel. Assuming double-sided tape is used to attach the touchscreen to the LCD the final spacing will be determined by the type of seal to be used. See “Sealing” on page 2-41, for an explanation of sealing methods.

Before mounting the touchscreen, clean the face of the display and the back of the touchscreen with household glass cleaner. Be sure to remove all fingerprints. The space between the touchscreen and the display face must be clean and free of any foreign objects.

Mount the touchscreen as follows:

•Layer the double-sided adhesive tape to achieve a total thickness of 1/16-inch (2 mm); across the entire top, bottom, and sides on the rear of the touchscreen. In general, the adhesive tape should be set back slightly from the edge of the active area of the touchscreen. When the display is reassembled, the mounting tape should not be visible. Make sure that the double-sided adhesive tape butts in the corners to form a dust seal. Do not remove the liner from the exposed side of the adhesive tape yet.

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Contents Page Elo IntelliTouch /SecureTouch Touchscreen Guide Disclaimer Page Intellitouch 10-YEAR Warranty Page Table of Contents Index List of Figures Viii List of Tables Page Introduction Intellitouch TechnologyIntelliTouch Touchscreen IntelliTouch TouchscreenIntelliTouch controller IntelliTouch ControllerAgency Approvals Driver SoftwareWork Area Safety InformationGetting Started Design Considerations for CRTs and LCDsProtective Clothing Bezel design Bezel DesignCRT Integration Safety InformationSuggested Tools Definition of TermsTypical IntelliTouch Touchscreen Installation Summary of Installation StepsUnpacking the Touchscreen Testing the MonitorIncoming Inspection Disassembling the MonitorDischarge the CRT Remove the Back CaseRemove the Electronic Chassis 14I n t e l l i T o u c h / S e c u r e T o u c h G u i d e Remove the CRT Verify Touchscreen Fit Page Attaching the Touchscreen Proper placement of adhesive tape to the touchscreen Spacing the CRT from the Bezel Installing the Controller Touchscreen Cabling System for Internal Serial Controller Internal Serial Controller 2500SP4 Pins Signal Function 24I n t e l l i T o u c h / S e c u r e T o u c h G u i d e External Serial Controller 26I n t e l l i T o u c h / S e c u r e T o u c h G u i d e Internal USB Controller 2500U Internal USB Controller 2500U28I n t e l l i T o u c h / S e c u r e T o u c h G u i d e Reassembling the Monitor Routing the Touchscreen CablesProper Sealing Improper Sealing Sealing the MonitorSealing Material Selection System EvaluationProper Bezel Mounting Improper Bezel Mounting LCD Integration Unpacking the Touchscreen Definition of Terms Disassembling the LCD MonitorTools and Equipment Required Parts for Serial ConnectionRequired Parts for USB Connection Optional Parts for USB Connection Optional Parts for Serial ConnectionRemoving the LCD Removing the Rear CaseDetermining Touchscreen Fit Mounting the Touchscreen Attaching double-sided adhesive tape to the touchscreen Spacing the LCD from the Bezel Sealing10 2500S Internal Serial Controller 11 2500U USB controller Parasitic Tap of 5Vdc Power12 DC to DC converter Parasitic Tap of 7-30Vdc DC to DC converterModifying the Case for USB Output Modifying the Case for Serial Output13 Horizontal escutcheon plate Re-assembling the Display48I n t e l l i T o u c h / S e c u r e T o u c h G u i d e Troubleshooting Process Troubleshooting GuideSoftware Troubleshooting Display ProblemsVideo Alignment Problems Hardware TroubleshootingSerial Controller Using the Comdump UtilityByte Byte DescriptionP2 Pins DB25 Host Signal SourceRS-232 Connections Power Connections Touchscreen and Touchscreen Cables Figure A.2 Transducer and Wedge AssemblyIC1 Cable EC2 Cable2x6 Male Header DB9 Male Function IntelliTouch Serial Controllers Diagnostic LEDsDiagnostic Codes IntelliTouch Serial Controller 2500SAA Bit Value hex Description Figure A.4 DB9 and DB25 Connector Pin Positions DB9 and DB25 Connector Pin PositionsSpecifications Environmental IntelliTouch TouchscreensMechanical OpticalUL Compliance Fire Retardation FCC Compliance Agency ApprovalsPhysical Characteristics IntelliTouch 2500U USB ControllerElectrical Touchscreen Connector Power Connector, P4 P2 pin number Signal name Standard wire color Signal name P4 pin Signal function Signal name P3 pin Signal functionLED State Function LED Diagnostic CharacteristicsAgency Approvals LED Blink Rate FunctionFigure B.4 2500U USB Controller, top view 2500U USB Controller DrawingsFigure B.6 2500U USB Controller, bottom-view Environments IntelliTouch 2500S Serial Controller72I n t e l l i T o u c h / S e c u r e T o u c h G u i d e Parameter Value Applicable Signals EIA-232 subsec Signal Name DB-9 P2 pin Sourced by Signal FunctionBoard mounted Cable applied Header Plug Jumper Function Jumper Settings76I n t e l l i T o u c h / S e c u r e T o u c h G u i d e Figure B.11 2500S Serial Controller, top view DrawingsFigure B.13 2500S Serial Controller Part Number Description ELO Part NumbersCables Stylus 82I n t e l l i T o u c h / S e c u r e T o u c h G u i d e Glossary Page Glossary-85 Page Glossary-87 Vertical Refresh Rate-See Refresh Rate Index Page Page