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Summary of Contents for 3M MicroTouch Near Field Imaging (NFI)
- Page 1 Projected Capacitive Near Field Imaging (“NFI”) Integration Guide 3M Touch Systems Proprietary Information...
- Page 2 3M Touch Systems, a subsidiary of 3M, is prohibited. Notice Given the variety of factors that can affect the use and performance of a 3M Touch Systems Product (the “Product”), including that solid state equipment has operation characteristics different from electromechanical equipment, some of which factors are uniquely within User’s knowledge and control, it is essential...
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Page 3: Intended Use
Safety labels The following safety symbols appear on your NFI touch screen system or packaging materials: Symbol Meaning Warning: Hazardous voltage Caution: Item is susceptible to electrostatic discharge (ESD) damage if proper precautions are not taken. 3M Touch Systems Proprietary Information... -
Page 5: Table Of Contents
Critical information: Integrating with a metal bezel ......21 Critical information: Integrating with a plastic bezel......25 Chapter 6 Troubleshooting............27 Strategies ....................27 Interpreting the controller’s status lights..........29 Appendix Standards and certifications........31 3M Touch Systems Proprietary Information... -
Page 7: Chapter 1 Overview
NFI touch screen and tail. The touch screen is available in different sizes and can be used with most flat panel displays or adapted to fit flat cathode ray tube displays. The tail connects the touch screen to the controller. 3M Touch Systems Proprietary Information... -
Page 8: Cleaning The Touch Screen
You will need the serial number if it is ever necessary to: Re-install the linearization file. Contact 3M Touch Systems customer service. Cleaning the touch screen Follow these guidelines for cleaning the NFI touch screen: To clean the touch screen’s back side, blow away dust with pressurized air. -
Page 9: M Touch Systems Support Services
US Eastern Standard Time, 9:00 a.m. to 5:00 p.m. throughout Europe. There is limited service on Saturdays and Sundays. You can contact 3M Touch Systems Technical Support (US only — Eastern Standard Time) by calling the hot line or sending a fax:... -
Page 11: Mounting The Touch Screen
Minimum mounting clearances are shown in Table A to help integrators make mounting decisions that will minimize capacitive loading on the touch screen and tail. Read Table A while referring to Figure 1 or Figure 2 (whichever figure applies to your mounting materials). 3M Touch Systems Proprietary Information... - Page 12 Side of bezel to edge of 0.030" 0.030" 0.030" 0.030" 0.030" — touch screen (0.8 mm) (0.8 mm) (0.8 mm) (0.8 mm) (0.8 mm) Viewing area & bezel opening: See NFI touch screen drawings on 3M Touch Systems website: www.3Mtouch.com 3M Touch Systems Proprietary Information...
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Page 13: Steps For Mounting An Nfi Touch Screen
Warranty note the touch screen must be detached from the bezel and adhesive to be returned to 3M Touch Systems under warranty. If your application requires an exceptional seal to prevent moisture or dust entering the bezel, please see instructions for outdoor applications in Chapter 5. -
Page 14: Touchsurround Tm Underlay (Optional)
A TouchSurround underlay can be fitted behind an NFI touch screen (when the touch screen is larger than the display) to allow part of the touch screen to be used to define keys such as the ones on a keyboard (Figure 3). Figure 3: TouchSurround underlay 3M Touch Systems Proprietary Information... -
Page 15: Mounting The Controller
As far away as possible from components that generate a signal in the 50 kHz to 60 kHz range (unless they are adequately shielded). (For guidelines on electrically connecting portable applications, contact “3M Touch Systems support services” on page 3.) -
Page 16: Materials Required
Overall height 0.32" (8.1 mm) Side view Figure 4: Dimensions of controller Critical There is only one grounding location and it must be connected for the controller to operate correctly (See Figure 5 on page 11). 3M Touch Systems Proprietary Information... -
Page 17: Steps For Mounting An Nfi Controller
Do not use metal fasteners that could touch and short out the surrounding circuitry or plated holes. 90075_2003 Figure 6: Mounting controller 3M Touch Systems Proprietary Information... - Page 18 Near Field Imaging (NFI) Integration Guide Ground the controller. 3M Touch Systems recommends grounding the controller using a ground screw through a metal stand off (Figure 7). If the stand off is not grounded, attach a grounding cable (Figure 8).
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Page 19: Making Connections And Resetting The Baseline
To provide extra protection for the touch screen tail, consider wrapping the entire tail in an insulator (i.e. foam or nylon). If the tail wraps around a sharp edge in your product, use an insulator on the edge of the surface to prevent chafing. 3M Touch Systems Proprietary Information... -
Page 20: Steps For Connecting Tail To Controller
To protect the retaining clip from damage, do not remove it completely (Figure 10). Pull out clip just enough so it 90010_2003 protrudes slightly from connector Figure 10: Pulling out retaining clip from touch screen connector on controller 3M Touch Systems Proprietary Information... - Page 21 90079_2003 Figure 12: Attaching tail With a finger on each side of the retaining clip, push it until the retaining clip fits snugly inside the connector (Figure 13). Figure 13: Pushing retaining clip into connector 3M Touch Systems Proprietary Information...
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Page 22: Critical Information: Connecting Communications And Power
An NFI RS-232 power/communications cable (which comes with stripped flying leads) is available from 3M Touch Systems. This cable can then be completed to fit the power supply and communications requirements of your application. To purchase this cable contact “3M Touch Systems support services”... -
Page 23: Steps For Attaching Power/Communications Cable
+ 5V DC User-provided power supply Steps for attaching power/communications cable To attach the RS-232 power/communications cable to the controller: Locate the power/communications connector (Figure 14). Power/communications connector 90009 Figure 14: Power/communications connector on controller 3M Touch Systems Proprietary Information... -
Page 24: Critical Information: Resetting The Baseline
If a message appears indicating that baselining was not successful, check to make sure that nothing is touching the touch screen, bezel, or controller and that nothing conductive is touching the tail, then try resetting the baseline again. 3M Touch Systems Proprietary Information... - Page 25 Use a finger or alignment tool to align the touch screen. An alignment tool produces a more accurate alignment. Select Done when alignment is finished and you are satisfied with the alignment. 11. Power cycle the controller. 3M Touch Systems Proprietary Information...
- Page 26 To do so, follow these steps: At the MS-DOS prompt, type ECAL /S (note that there is a space after ECAL) and then press Enter. Follow the on-screen instructions to complete the TouchSurround underlay alignment. 10. Power cycle the controller. 3M Touch Systems Proprietary Information...
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Page 27: Chapter 5 Outdoor Applications
(“Critical information: Integrating with a metal bezel” ) assumes that your bezel is metal. Critical information for metalizing a plastic bezel. Although most of this chapter assumes that a metal bezel is being used, 3M Touch Systems recommends that, for outdoor applications, a metalized plastic bezel be used whenever possible. - Page 28 Side of bezel to edge of 0.030" 0.030" 0.030" 0.030" 0.030" — touch screen (0.8 mm) (0.8 mm) (0.8 mm) (0.8 mm) (0.8 mm) Viewing area & bezel opening: See NFI touch screen drawings on 3M Touch Systems website: www.3Mtouch.com 3M Touch Systems Proprietary Information...
- Page 29 If mounting outdoors with adhesive, follow the instructions provided by the adhesive manufacturer to ensure that the bonding is set correctly. 3M Touch Systems recommends: Use a non-acidic variety of RTV (room temperature vulcanizing) or silicone adhesives.
- Page 30 : If you use an adhesive to mount an NFI touch screen into a bezel, the touch screen must be detached from the bezel and adhesive to be returned to 3M Touch Systems under warranty. 3M Touch Systems Proprietary Information...
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Page 31: Critical Information: Integrating With A Plastic Bezel
Ground the metallized area through screws that attach to the bezel. Observe minimum mounting clearances (Table E on page 26). Note: The mounting clearances in Table E apply whether integrating into a plastic or metal bezel. 3M Touch Systems Proprietary Information... - Page 32 Side of bezel to edge of 0.030" 0.030" 0.030" 0.030" 0.030" — touch screen (0.8 mm) (0.8 mm) (0.8 mm) (0.8 mm) (0.8 mm) Viewing area & bezel opening: See NFI touch screen drawings on 3M Touch Systems website: www.3Mtouch.com 3M Touch Systems Proprietary Information...
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Page 33: Chapter 6 Troubleshooting
The strategies listed below will resolve most problems. If problems persist after working through this section and referring to other relevant chapters in this manual, contact 3M Touch Systems technical support (“3M Touch Systems support services” on page 3). Check integration procedures The information below regarding integration is not a substitute for the detailed information in Chapters 2, Chapter 3, Chapter 4, and Chapter 5. - Page 34 Run the Setup Wizard to reset the touch screen’s baseline. Do not touch — or allow other things to touch — the touch screen, bezel, or controller during baselining. After baselining, power cycle the controller. For details on resetting the baseline, see page 18. 3M Touch Systems Proprietary Information...
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Page 35: Interpreting The Controller's Status Lights
Work through “Strategies” on page 27. If problem persists and sensitivity is set at 1, try changing sensitivity to a higher setting. If that does not resolve the error, contact 3M Touch Systems technical support. 3M Touch Systems Proprietary Information... -
Page 37: Appendix Standards And Certifications
Standard Test Radiated and conducted emissions FCC CFR 47, Part 15, Class B limits Radiated and conducted emissions EN 55022, Class B limits Power line harmonics EN 61000-3-2 Power line fluctuations and flicker EN 61000-3-3 3M Touch Systems Proprietary Information... - Page 38 The NFI touch screen system has been tested to the following standards to show compatibility for use in products requiring CE marking under the following directives: EMC Directive 89/336/EEC Low Voltage Directive 73/23/EEC Machinery Directive 89/392/EEC 3M Touch Systems Proprietary Information...
- Page 40 3M Touch Systems Worldwide Manufacturing Plants: Methuen, Massachusetts 3M Optical Systems Division Milwaukee, Wisconsin 800 Carleton Court Vancouver, BC Canada Annacis Island New Westminster, B.C. Canada V3M 6L3 www.3Mtouch.com © 3M 2003 MicroTouch, Near Field Imaging, and TouchSurround are trademarks of 3M.
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