Elo TouchSystems IntelliTouch SecureTouch manual Serial Controller, Using the Comdump Utility

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•Intermittent touch data. If the system is reporting touch data at a slow or varying rate, the problem may be caused by a low signal strength or excessive noise in the system. Generation of touch data when the touchscreen is not touched is most likely caused by excessive system noise. See the sections and, page and, respectively. Use of SAWDUMP (a DOS utility included with most Elo driver software and available on Elo’s website, www.elotuch.com, may help to identify these problems. Contact Elo Application Engineering, 1-800-557-1458 ext. 6, for more information.

•Linearity. As the IntelliTouch system is inherently stable and drift-free, apparent linearity problems are usually due to video alignment errors or display drift. See Video Alignment Problems, page 51.

The remainder of this appendix deals with component-level troubleshooting of controllers, power supplies, the touchscreen, and cables.

Serial Controller

The 2310B operates at 9600 baud, 8 data bits, 1 stop bit, and no parity. See page 75 for controller jumper settings.

The 2500S operates at 9600 baud.

Using the COMDUMP Utility

COMDUMP is a DOS utility included with most Elo driver software and available at www.elotouch.com. Use COMDUMP to verify basic controller functionality and to determine whether or not data is reaching the serial port. COMDUMP can be run without a touchscreen driver loaded. Type”COMDUMP <n>” where <n> is the number of the COM port. Detailed instructions can be found on Elo’s Web Tech site, www.elotouch.com/support.

If you are not running under DOS, boot your PC from a DOS diskette before running COMDUMP. If you cannot run DOS (use an ASCII terminal or a communications program in local mode to get a similar type of analysis provided by COMDUMP). Another option is to temporarily connect the touchscreen to a PC with DOS and run COMDUMP.

If the hardware is functioning properly, untranslated (raw) coordinates will be returned at a constant rate only when the touchscreen is touched. If no data is transmitted on touch, or if data is transmitted when the touchscreen is not touched (either continuously or intermittently), you have a hardware problem.

If the LED is accessible, and indicates that data is being transmitted, confirm the communication parameters, then try another serial port, possibly on another computer. Also see RS-232 Connections, page 54.

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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 Intellitouch Technology IntroductionIntelliTouch Touchscreen IntelliTouch TouchscreenIntelliTouch Controller IntelliTouch controllerDriver Software Agency ApprovalsSafety Information Work AreaDesign Considerations for CRTs and LCDs Getting StartedProtective Clothing Bezel Design Bezel designSafety Information CRT IntegrationDefinition of Terms Suggested ToolsSummary of Installation Steps Typical IntelliTouch Touchscreen InstallationTesting the Monitor Incoming InspectionDisassembling the Monitor Unpacking the TouchscreenRemove the Back Case Discharge the CRTRemove 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 Internal Serial Controller 2500S Touchscreen Cabling System for Internal Serial ControllerP4 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 Routing the Touchscreen Cables Reassembling the MonitorSealing the Monitor Proper Sealing Improper SealingSystem Evaluation Sealing Material SelectionProper Bezel Mounting Improper Bezel Mounting LCD Integration Unpacking the Touchscreen Disassembling the LCD Monitor Definition of TermsRequired Parts for Serial Connection Tools and EquipmentRequired Parts for USB Connection Optional Parts for Serial Connection Optional Parts for USB ConnectionRemoving the Rear Case Removing the LCDDetermining Touchscreen Fit Mounting the Touchscreen Attaching double-sided adhesive tape to the touchscreen Sealing Spacing the LCD from the Bezel10 2500S Internal Serial Controller 11 2500U USB controller Power Parasitic Tap of 5VdcParasitic Tap of 7-30Vdc DC to DC converter 12 DC to DC converterModifying the Case for Serial Output Modifying the Case for USB OutputRe-assembling the Display 13 Horizontal escutcheon plate48I 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 Guide Troubleshooting ProcessDisplay Problems Software TroubleshootingHardware Troubleshooting Video Alignment ProblemsUsing the Comdump Utility Serial ControllerByte Description ByteHost Signal Source P2 Pins DB25RS-232 Connections Power Connections Figure A.2 Transducer and Wedge Assembly Touchscreen and Touchscreen CablesEC2 Cable IC1 Cable2x6 Male Header DB9 Male Function Diagnostic LEDs IntelliTouch Serial ControllersIntelliTouch Serial Controller 2500S Diagnostic CodesAA Bit Value hex Description DB9 and DB25 Connector Pin Positions Figure A.4 DB9 and DB25 Connector Pin PositionsSpecifications IntelliTouch Touchscreens MechanicalOptical EnvironmentalAgency Approvals UL Compliance Fire Retardation FCC ComplianceIntelliTouch 2500U USB Controller Physical CharacteristicsElectrical Touchscreen Connector Power Connector, P4 P2 pin number Signal name Standard wire color Signal name P3 pin Signal function Signal name P4 pin Signal functionLED Diagnostic Characteristics Agency ApprovalsLED Blink Rate Function LED State Function2500U USB Controller Drawings Figure B.4 2500U USB Controller, top viewFigure B.6 2500U USB Controller, bottom-view IntelliTouch 2500S Serial Controller Environments72I 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 Signal Name DB-9 P2 pin Sourced by Signal Function Parameter Value Applicable Signals EIA-232 subsecBoard mounted Cable applied Header Plug Jumper Settings Jumper Function76I 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 Drawings Figure B.11 2500S Serial Controller, top viewFigure B.13 2500S Serial Controller ELO Part Numbers Part Number DescriptionCables 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
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