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3M
MicroTouch
System SCT3nnnEX
Integration Guide
Systems SCT32nnEX
and SCT38nnEX
Read and understand all safety information
contained in this document before using this product.
3M Touch Systems, Inc. Proprietary Information – TSD-19-278

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Summary of Contents for 3M MicroTouch SCT32nnEX

  • Page 1 MicroTouch ™ ™ System SCT3nnnEX Integration Guide Systems SCT32nnEX and SCT38nnEX Read and understand all safety information contained in this document before using this product. 3M Touch Systems, Inc. Proprietary Information – TSD-19-278...
  • Page 2 3M Touch Systems, Inc. warranty, then 3M Touch Systems, Inc. sole obligation and User’s and Purchaser’s exclusive remedy, will be, at 3M Touch Systems, Inc. option, to repair or replace that Product quantity or software media or to refund its purchase price.
  • Page 3: Table Of Contents

    Mounting the Sensor to the Display ................. 25 Touch Sensor Care and Cleaning ................27 Inspect the Mounted Touch Sensor ................28 Repair or Removing the Touch Sensor (if needed) ..........29 3M Touch Systems, Inc. Proprietary Information – TSD-19-278...
  • Page 4 Mounting the Controller Internally ................35 Completing Controller Mounting ................36 Powering the Controller ................... 37 Locating Power for the Controller ................39 Modifying the Display for the Controller Cable ............39 Installing Software ....................41 3M Touch Systems, Inc. Proprietary Information – TSD-19-278...
  • Page 5: About This Manual

    Congratulations on the purchase of your 3M™ MicroTouch™ System SCT32nnEX and the SCT3855EX (privacy) surface capacitive technology (SCT) sensor and welcome to the world of 3M Touch Systems — a world where using a computer is as simple as touching the sensor.
  • Page 6: What You Need To Know

    3M Touch Systems is committed to being a premier supplier of touch systems throughout the world. As a 3M Touch Systems customer, you are aware that we have strong internal programs designed to meet or exceed environmental regulations of our customers and the regions in which we conduct business.
  • Page 7 To reduce the risks associated with improper disposal, which if not avoided may result in minor or moderate injury from ground water contamination: • Dispose of components in accordance with local, state, and federal regulations. 3M Touch Systems, Inc. Proprietary Information – TSD-19-278...
  • Page 8: Important Notes For Video Displays

    Specifications can be found in the product data sheet on the 3M Touch Systems website http://www.3m.com/touch/.
  • Page 9: Touch Sensor Care And Cleaning

    Touch Sensor Care and Cleaning The touch sensor requires very little maintenance. 3M Touch Systems recommends that you periodically clean the glass touch sensor surface. Be sure to turn off your display before cleaning.
  • Page 10: Contact 3M Touch Systems

    5:30 p.m. until 8:00 p.m. US Eastern Standard Time – 9 a.m. to 5 p.m. throughout Europe. You can contact 3M Touch Systems, Inc. Technical Support (US only -- Eastern Standard Time) by calling the hot line, sending email or a fax.
  • Page 11: Chapter 1 Getting Started

    CHAPTER 1 Getting Started The 3M™ MicroTouch™ Sensor SCT makes using computers as simple as touching the screen. To begin installing your SCT sensor, take a few minutes to review this chapter. It is your roadmap to a successful installation. This manual describes how to retrofit a display with a sensor.
  • Page 12: Preparing Your Work Space

    Select a comfortable work area with adequate space and lighting. Make sure that the area is free of clutter and/or objects that could scratch the sensor and display. 3M Touch Systems recommends an area of at least nine square feet. You will need this space to handle components safely and to set major components aside during the installation.
  • Page 13: Identifying The Components

    • A USB cable (7319420) or serial cable (7310101) • Software and technical documentation found on the http://www.3m.com/touch/. Save the invoice, shipping container, and all packing material in case you need to transport the equipment any time in the future.
  • Page 14: Optional Power Supply For A Serial Controller

    Gasket Tape & chassis housing You can install a 3M™ MicroTouch™ sensor on most displays. Although each particular display may have some unique integration considerations, the basic installation process consists of the following steps: • Test that the display’s video works properly •...
  • Page 15: Chapter 2 Sensor Design Considerations

    Sensor Design Considerations Design Considerations The 3M™ MicroTouch™ SCT sensors are available in a variety of sizes, for use on a variety of displays. These sensors come in three different configurations: one with a 5- pin connector to attach to an EX11n series controller; one mated with an EX11n series controller;...
  • Page 16: Mechanical Considerations

    Always design your sensor integration with the flex tail exiting from the top or sides of the display. Never design tail exits from the bottom as spills could accumulate in the tail attachment area and cause electrical shorting. 3M Touch Systems, Inc. Proprietary Information – TSD-19-278...
  • Page 17 If this cannot be avoided, secure the tail so it does not move. Note: 3M Touch Systems does not recommend metal sensor mounting brackets. If metal sensor mounting brackets must be used, be sure to keep tail bends away. Make sure that all metal brackets are grounded.
  • Page 18 Note: If using a sensor with privacy option, remove the protective backing on the privacy sensor. When using 3M VHB applied to the privacy film, be sure to stay within recommended temperature guidelines (-50C to +70C). Tape extending beyond the sensor edge may cause excessive stress on the tail connection.
  • Page 19: Touch System Location

    3M™ MicroTouch™ System SCT3nnnEX Integration Guide Note: 3M VHB acrylic foam tapes (Product Numbers 4956, 4956F, or 4979F) are well suited for this purpose. These tapes were chosen for their thermal properties. The typical Thermal Coefficient of Expansion for these tapes is 1.8 X 10E4 mm/mm/°C.
  • Page 20: Designing Software Applications

    Turn off the cursor. Users may inadvertently try to drag the cursor to the correct location on the sensor, emulating moving a mouse, instead of touching the button directly. • Design your applications to work with a single touch to activate rather than a double- touch. 3M Touch Systems, Inc. Proprietary Information – TSD-19-278...
  • Page 21: Chapter 3 Installing An Sct Touch Sensor

    Note: Given the variety of factors that can affect the use and performance of any product, some of which are uniquely within the user’s knowledge and control, it is essential that the user evaluate the 3M product to determine whether it is suitable for a particular purpose and suitable for the user’s intended application.
  • Page 22: When Installing A Sensor With Privacy Film

    Note: This manual assumes that you have a display chassis attached to the front bezel, but since the internal components of most assemblies are basically the same, these same steps are applicable to all display installations. 3M Touch Systems, Inc. Proprietary Information – TSD-19-278...
  • Page 23: Fitting The Sensor

    Here are a few solutions: a. You can trim some plastic sections from inside the housing making sure you do not compromise the mechanical integrity of the display. 3M Touch Systems, Inc. Proprietary Information – TSD-19-278...
  • Page 24 4. Note the ribs and fins of the bezel that are in direct contact with the sensor. Pay particular attention to the corners as well as the area where the flex tail exits from the sensor. 3M Touch Systems, Inc. Proprietary Information – TSD-19-278...
  • Page 25: Mounting The Sensor To The Display

    Note: For ease of maintenance, you might want to put a border of polyimide tape (or a similar strength tape) around the perimeter of the display in order to provide a surface to adhere the 3M mounting tape that will be easy to remove if the need arises. 3M Touch Systems, Inc. Proprietary Information – TSD-19-278...
  • Page 26 3M™ MicroTouch™ System SCT3nnnEX Integration Guide Strips of high-density foam mounting tape (3M Product Numbers 4956, 4956F, or 4979F) with adhesive on both sides should be used to attach the sensor to the LCD metal frame. These strips should not form a full seal – allow for ventilation (1-2 mm gaps) at the corners as shown above.
  • Page 27: Touch Sensor Care And Cleaning

    Touch Sensor Care and Cleaning The touch sensor requires very little maintenance. 3M Touch Systems recommends that you periodically clean the glass touch sensor surface. Be sure to turn off your display before cleaning.
  • Page 28: Inspect The Mounted Touch Sensor

    3M™ MicroTouch™ System SCT3nnnEX Integration Guide 2. Apply strips of the double-sided acrylic foam tape (3M VHB 4956) around the perimeter of the display. Refer to the Mechanical Considerations section in Chapter 2 for additional details. Note: To distinguish the front surface of the sensor, understand that the printed frit pattern and the sensor tail connection are on top.
  • Page 29: Repair Or Removing The Touch Sensor (If Needed)

    If the gasket is spaced away from the bezel edge, you will create a gap that can collect dust, liquids, etc. 4. Pay close attention to the bottom edge joints. Butt the gasket tape edges to create a tight fitting joint. 3M Touch Systems, Inc. Proprietary Information – TSD-19-278...
  • Page 30: Adding Spacers To The Bezel

    4. Adjust the display so that it is centered in the bezel and remove the temporary posts. 5. Select a replacement screw for the factory-installed bezel screws. 3M Touch Systems recommends that you replace the factory display screws with longer screws to accommodate the sealing gasket and sensor thickness and prevent the glass from breaking by forcing too short screws to work.
  • Page 31: Reconnecting The Bezel And Chassis

    1. Reconnect all wires, cables, and switches. 2. Lay the sensor flex tail along the outside area of the chassis. a. Avoid contact with internal electronics that can affect the sensor performance. 3M Touch Systems, Inc. Proprietary Information – TSD-19-278...
  • Page 32 3M™ MicroTouch™ System SCT3nnnEX Integration Guide b. Do not route the sensor flex tail near the backlight inverter or LED power supply of the display. 3M Touch Systems, Inc. Proprietary Information – TSD-19-278...
  • Page 33: Installing The 3M™ Microtouch™ Ex Series Controller

    Installing the 3M™ MicroTouch™ EX Series Controller This chapter describes how to install the 3M™ MicroTouch™ EX series controller for your SCT sensor. You may be using one of several 3M™ MicroTouch™ controllers, refer to the appropriate EX Controller Reference Guide for additional information on your specific controller.
  • Page 34: Disassembling The Chassis

    2. Take a moment to inspect the display’s internal hardware before you disconnect any wires. a. Take a digital photo or note where each wire is attached and how each wire is routed. b. Label each wire. Labeling the wires makes reassembling easier. 3M Touch Systems, Inc. Proprietary Information – TSD-19-278...
  • Page 35: Mounting The Controller Internally

    Additional space will also be needed between the controller board and the metal shield to prevent shorting of the board. Figure 1. EX12n Series Controller Dimensions 3M Touch Systems, Inc. Proprietary Information – TSD-19-278...
  • Page 36: Completing Controller Mounting

    These spacers will prevent the board from shorting out. Note: Ensure that the two controller mounting holes are connected to the chassis ground of the display. 0.1 inch spacer 3M Touch Systems, Inc. Proprietary Information – TSD-19-278...
  • Page 37: Powering The Controller

    After deciding where to mount the controller, it is necessary to determine how the controller will be powered. As mentioned in the previous section, each type of controller requires a different power source. Note that the controller must be properly grounded through the mounting holes 3M Touch Systems, Inc. Proprietary Information – TSD-19-278...
  • Page 38 Grey and Orange: Insulated with no electrical connection EX111 series Bus Power option Power input contacts: Use connection to PC Connections: None required Controller must be properly grounded through the mounting holes. 3M Touch Systems, Inc. Proprietary Information – TSD-19-278...
  • Page 39: Locating Power For The Controller

    2. Use a center punch to place a dimple at the selected location. 3. Drill a hole using a 3/4-inch spade bit as shown below. 3M Touch Systems, Inc. Proprietary Information – TSD-19-278...
  • Page 40 2. Align the display cover for reattachment to the chassis and thread the controller cable through the hole. 3. Remount the cover to the chassis assembly and attach the housing screws you removed when you disassembled the display or use new longer screws as required. 3M Touch Systems, Inc. Proprietary Information – TSD-19-278...
  • Page 41: Installing Software

    Installing Software 3M™ MicroTouch™ Software includes the touch driver and control panel that enables your sensor to work with your computer. When you install this software, the correct driver for your system will automatically load. 3M Touch Systems currently supports touch drivers for most Microsoft®...

This manual is also suitable for:

Microtouch sct38nnex

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