3M MicroTouch DST2270DX Quick setup guide

3M Touch Systems, Inc. Proprietary Information – TSD-25739
3M
™ MicroTouch™
System DST2270DX
Integration Guide
Read and understand all safety information
contained in this document before using this product.
3

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The information in this document is subject to change without notice. No part of this document may be reproduced or transmitted
in any form or by any means, electronic or mechanical, for any purpose, without the express written permission of 3M Touch
Systems, Inc. 3M may have patents or pending patent applications, trademarks, copyrights, or other intellectual property rights
covering subject matter in this document. The furnishing of this document does not give you license to these patents, trademarks,
copyrights, or other intellectual property except as expressly provided in any written license agreement from 3M Touch Systems,
Inc.
The information provided in this document is intended as a guide only. For the latest detailed engineering specifications, please
contact your 3M Touch Systems, Inc. Application Engineer. 3M Touch Systems, Inc. is committed to continually improving
product designs. As a result, product specifications may be subject to change without notification.
"RoHS compliant 2011/65/EU" means that the product or part does not contain any of the following substances in excess of the
following maximum concentration values in any homogeneous material, unless the substance is in an application that is exempt
under RoHS: (a) 0.1% (by weight) for lead, mercury, hexavalent chromium, polybrominated biphenyls or polybrominated
diphenyl ethers; or (b) 0.01% (by weight) for cadmium. This information represents 3M’s knowledge and belief, which may be
based in whole or in part on information provided by third party suppliers to 3M.
NOTICE: Given the variety of factors that can affect the use and performance of a 3M Touch Systems, Inc. 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 that User evaluate the 3M Touch Systems, Inc.
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© 3M 2005-2011 All rights reserved.
Document Title: 3M
TM
MicroTouch
TM
System DST2270DX Integration Guide
Document Number: TSD-25739, Revision F
3M, the 3M logo, MicroTouch, and the MicroTouch logo are either registered trademarks or trademarks of 3M in the United
States and/or other countries.
Windows and/or other Microsoft products referenced herein are either registered trademarks or trademarks of Microsoft
Corporation in the U.S. and/or other countries.
All other trademarks are the property of their respective owners.

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Contents
About This Manual
What You Need to Know...........................................................................................5
3M Touch Systems Support Services ........................................................................5
Contact 3M Touch Systems .......................................................................................6
Chapter 1 Getting Started
Important Safety Information.....................................................................................8
Sensor Care and Cleaning........................................................................................10
Important Notes for Video Displays ........................................................................10
Supplies and Tools Needed for the Installation .......................................................11
Preparing Your Work Space ....................................................................................11
Identifying the Components.....................................................................................12
Testing the Display Video........................................................................................13
Chapter 2 Sensor Design Considerations
Before You Begin.....................................................................................................15
Mechanical Considerations......................................................................................15
Grounding Considerations .......................................................................................18
Touch System Location............................................................................................19
Designing Software Applications ............................................................................19
Chapter 3 Installing a 3M
TM
MicroTouch™ DST2270DX Sensor
Handling the Sensor.................................................................................................21
Installation Considerations.......................................................................................23
Disassembling the Display.......................................................................................24
Fitting the Sensor .....................................................................................................25
Mounting the Sensor to the Display.........................................................................27
Inspect the Mounted Sensor.....................................................................................30
Removing the Sensor ...............................................................................................31
Adding Spacers to the Bezel ....................................................................................32
Reconnecting the Bezel and Chassis........................................................................33

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Chapter 4 Installing the Controller
Disassembling the Chassis.......................................................................................34
Mounting the Controller...........................................................................................35
EMI Considerations .................................................................................................37
Handling and ESD Protection..................................................................................37
Establishing the Data Connection............................................................................37
Supplying Power to the Controller...........................................................................38
Locating Power for the Controller ...........................................................................39
Completing Controller Mounting.............................................................................39
Sensor Flex Tail Connector......................................................................................41
Modifying the Display (USB or Serial) ...................................................................42
Turning On Your System.........................................................................................44
Status Light (LED) Diagnostics...............................................................................44
Wake on Touch (USB Only)....................................................................................44
Installing Software ...................................................................................................45

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About This Manual
Congratulations on the purchase of your 3M™ MicroTouch™ Dispersive Signal
Technology (DST) sensor and welcome to the world of 3M Touch Systems — a world
where using a computer is as simple as touching the sensor.
The 3M™ MicroTouch™ DST2270DX sensor incorporates advanced design and
production techniques that result in high quality sensors. The DST sensor’s low profile
design provides ease-of-installation for most displays. The DST sensor’s durability,
reliability, contaminant resistance, excellent light transmission, finger or stylus input,
and superior optical clarity, make it an ideal choice for large-sensor interactive displays.
3M Touch Systems is committed to being a premier supplier in touch systems throughout
the world. As a 3M Touch Systems customer, you are aware that we have strong internal
programs that meet or exceed environmental regulations of our customers and the
regions in which we conduct business.
What You Need to Know
This manual describes how to complete the following tasks:
•Disassemble your display (if necessary)
•Mount the sensor to the display
•Install the controller
3M Touch Systems Support Services
3M Touch Systems provides extensive support services through our website and
technical support organization. Visit the 3M Touch Systems website at
http://www.3Mtouch.com/, where you can download MT 7 Software and drivers, obtain
regularly updated technical documentation on 3M Touch Systems products, and learn
more about our company.

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Whenever you contact Technical Support, please provide the following information:
• Touch display size, part number and serial number
• Current driver version
• Operating system used
• Information on additional peripherals
Technical Support is available Monday through Friday 8:30 a.m. to 5:30 p.m. with
limited call back service after 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 Technical Support (US only -- Eastern Standard
Time) by calling the hot line, sending email or a fax.
• Technical Support Hot Line: 978-659-9200
• Technical Support Fax: [phone]
• Toll Free: 1-866-407-6666 (Option 3)
• Email: [e-mail]
Contact 3M Touch Systems
Contact information for all offices can be found on our website at:
http://www.3Mtouch.com/

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CHAPTER 1
Getting Started
The 3M™ MicroTouch™ DST2270DX system is one of the most intuitive interfaces
available for large-format interactive displays. The rugged design of the DST2270DX
sensor is ideal for interactive digital signage, point-of-information applications and
allows for fast, accurate, reliable touch performance that is virtually unaffected by
contaminants, scratches, or static objects on the screen. To begin installing your
DST2270DX sensor, take a few minutes to review this chapter. It is your roadmap to a
successful installation.
Pay close attention to the information contained in the Important Safety Information
section below. 3M Touch Systems recommends that only qualified display technicians
install the sensor.
•Disassembling a display can be a dangerous procedure. Be sure to follow all
manufacturers' recommendations for assembly and disassembly of your flat sensor
display.
•Make sure you have the necessary equipment before starting the installation. Refer to
Supplies and Tools Needed for the Installation later in this chapter.
•Set up a clean, comfortable, and spacious working area. Having sufficient room to
work makes the installation easier.
•Test your display to ensure good working condition before you install the sensor.
•Identify the different components to install and review the summary of the
installation procedure. It is important to know how all the pieces eventually fit
together before disassembling your system.
Note: If any points within this guide are unclear to you, or further clarification is
necessary, please contact your 3M Touch Systems applications engineer.
If you decide to install the sensor, take the following precautions:
•Follow each procedure carefully, work with the system powered off and unplugged,
and observe all safety information.
•Protect your investment. The sensor is a glass product. You must handle it with care.

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Note: Consult the display manufacturer to find out whether the original warranty will
be affected if you install the sensor. Also, determine who will recertify the display.
Recertification will be necessary to comply with safety and FCC or EMC regulations.
Important Safety Information
Read, understand, and follow all safety information before using this product. Follow all
instructions marked on the product and described in this document. Pay close attention to
the following installation warnings and safety precautions.
Intended Use
The 3M™ MicroTouch™ DST2270DX Integration Guide is intended to instruct and
guide you in the integration of a DST sensor into an existing large format flat sensor
display. This manual provides specific instructions for a large format display. These
sensors are intended for indoor use only and are not designed for use in hazardous
locations.
Explanation of Signal Word Consequences
DANGER: Indicates a potentially hazardous situation, which, if not avoided, will
result in death or serious injury and/or property damage.
WARNING: Indicates a potentially hazardous situation, which, if not avoided,
could result in death or serious injury and/or property damage.
CAUTION: Indicates a potentially hazardous situation, which, if not avoided,
may result in minor or moderate injury and/or property damage.
NOTICE: Indicates a potentially hazardous situation, which, if not avoided, may
result in property damage.
DANGER
To avoid the risk of fire and/or explosion which will result in serious injury or
death:
• Do not install or use this product in a hazardous location.
WARNING
To reduce the risk of fire and/or explosion which could result in serious injury or
property damage:
•Do not use this product in any outdoor environment unless NEMA standards (or
other similar standards such as IP rating) are followed
To reduce the risk of hazardous voltage which could result in serious injury or
death:
•Do not use a damaged power supply.
•Do not use a power cord that is frayed or otherwise damaged.
•You must be a qualified technician with experience in assembling and
disassembling different types of displays. You must know the specifics of your

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WARNING
display and have access to its documentation. There may be hazardous voltages
present in the display. If you do not understand display electronics, you may injure
yourself, damage the sensor, or damage the controller.
•Disconnect the power to the display before installation
•Do not service the display.
•Do not use non-conforming replacement parts.
•Do not expose the display to rain or other sources of water, steam, or moisture .
CAUTION
To reduce the risk of glass breakage which may result in minor or moderate
injury:
•Handle the sensors with care to avoid breaking the glass. Be aware of cracked or
broken sensors with sharp edges.
•Do not drop the display as it may cause glass parts to break
•Do not try to pry the sensor off the LCD if you need to remove the sensor for
servicing. You may break the glass and injure yourself or others.
To reduce the risk of lacerations from glass breakage which could result in minor
or moderate injury:
•Do not use display if sensor is damaged or broken
•Team lift the large sensor with at least two people. Handle and place the sensor
using care and protective gloves.
To reduce the risk of the potentially hazardous situations associated with the use
of isopropyl alcohol which may result in minor or moderate injury or property
damage:
•Follow all instructions and recommendations in the alcohol manufacturer's
Material Safety Data Sheet and product label.
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 federal, state and local regulations.
To reduce the risk of potentially hazardous situations associated with the
handling of large sheets of glass which may result in minor or moderate injury or
property damage:
•Be sure to exercise extreme caution in handling the edges of the sensor with the
copper tape applied. The edge of the tape is very sharp.
To reduce the risk of possible environmental contamination which may result in
minor or moderate injury:
•Dispose of the display in accordance with federal, state and local regulations.

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Sensor Care and Cleaning
The sensor requires very little maintenance. 3M Touch Systems recommends that you
periodically clean the glass sensor surface.
CAUTION
To reduce the risk of the potentially hazardous situations associated with the use
of isopropyl alcohol which may result in minor or moderate injury or property
damage:
Follow all instructions and recommendations in the alcohol manufacturer's Material
Safety Data Sheet and product label.
Typically, an isopropyl alcohol and water solution ratio of 50:50 is the best cleaning
agent for your sensor. You can also use straight isopropyl alcohol. Be sure to follow
solvent manufacturer's precautions and directions for use when using any solvents.
• It is important to avoid using any caustic chemicals on the sensor.
• Always dampen the cloth and then clean the sensor. Be sure to spray the cleaning
liquid onto the cloth, not the sensor, so that drips do not seep inside the display or
stain the bezel.
• Apply the cleaner with a soft, lint-free cloth. Avoid using gritty cloths.
• Always handle the sensor with care. Do not pull on or stress flex tail.
Important Notes for Video Displays
• Plug power cord into appropriate power source.
• Plug power cord into a grounded receptacle.
• When unplugging power supply cord, pull on the plug not the cord.
• Do not connect or disconnect this product during an electrical storm.
• Install the display in a well-ventilated area. Always maintain adequate ventilation to
protect the display from overheating and to ensure reliable and continued operation.
• Do not expose the display to direct sunlight or heat. Passive heat may cause damage
to the case and other parts.
• Do not install the display in areas where extreme vibrations may be generated. For
example, nearby manufacturing equipment may produce strong vibrations. The
vibrations may cause the display to exhibit picture discoloration or poor video
quality.
• Ensure that metal enclosures or bezels do not contact the sensor.
• To avoid ergonomic concerns:
Do not install the display in a manner or location with awkward accessibility.
Extended use may result in muscle, tendon, or fixed posture strains. It is
recommended you take periodic breaks from continuous use.

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Supplies and Tools Needed for the Installation
Before starting the installation procedure, check that you have all items listed below.
Supplies Needed
• Safety glasses • Clean, anti-static pad
• Small containers for holding loose
parts (paper cups)
• ESD Foam blocks and pad
• Electrical tape (or black acetate tape) • Felt-tip marker pen
• A clean soft cloth and cleaner for the
display and sensor
• Cable tie-wraps
• ROHS compliant solder
• Replacement screws for mounting a
flat panel to a bezel or chassis
• Ring lugs or crimps
• Nylon spacers and washers
• Gloves for handling glass
• ESD strap
• Bezel sealing gasket -- 3M 4508
• Display mounting tape -- 3M 5962 &
5925 (already installed)
• 5 mil thick polyimide tape
• Copper tape
Tools Needed
• Flat-blade screwdriver with insulated
handle
• Plastic burnisher
• Razor knife or single-edge razor
blade
• Soldering iron
• Phillips-head screwdriver • Center punch
• Power drill • Variety of drill, tap, and spade bits
• Wire stripper • Crimping tool
• Compressed air (optional) • Dremel® tool or nibbler
Preparing Your Work Space
Comfortable Work Area
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 flat panel display. 3M
Touch Systems recommends an area of at least 25 square feet. You need this space to
handle components safely and to set major components aside during the installation.
ESD Workbench
A certified ESD workbench is recommended when working with electronics assemblies.

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Protective Material
Place anti-static protective material on the work surface. A padded surface protects
equipment from scratches during installation. Foam blocks can be used to support the
component side of the sensor and make for easier handling of the sensor panel.
Small Containers
Have several small containers (such as paper cups) available to hold screws, washers,
and other small components once you remove them.
Foam Pad
A foam pad is useful for holding the display while attaching the sensor. The pad makes
the sensor easier to rotate for fastening screws, taping, etc.
Identifying the Components
The following components are needed for a successful integration:
•A 3M™ MicroTouch™ DST2270DX sensor and mated controller
•A serial (7319630) or USB cable (7319420)
•Molex 3-pin power connector crimp housing (22-01-3037) and
three terminals (08-50-0114)
•Software and documentation found on the 3M Touch Systems website at
http://www.3Mtouch.com/.
Note: The DST sensor works exclusively with a mated DX123 controller for optimal
performance. Be sure to match the serial number on the sensor with the serial number on
the controller throughout the integration process.
Save the invoice, shipping container, and all packing material in case you need to
transport the equipment any time in the future.

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Testing the Display Video
Whether you are installing the sensor on a new or older display, you should make sure
that the display is in good working condition and the video output is functioning
properly. Your initial test should verify that the video functions properly before you
install the sensor. You can also compare your results with the results you get after you
complete the installation.
If the display is functioning properly, turn off your system, disconnect power plugs, and
disconnect all cables from the display. You are ready to disassemble the display and
install the sensor.

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CHAPTER 2
Sensor Design Considerations
You can install a 3M™ MicroTouch™ DST2270DX sensor on most large 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
•Disassemble the display (if necessary)
•Mount the sensor to the front of the display
•Install the controller (internally)
•Reassemble the display
•Connect the display and sensor to your computer system
Controller
LCD &
Chassis
Panel Back
Cover
Mounting
Tape
Sensor
Front Bezel &
Sealing Gasket

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Before You Begin
Before you begin the installation, please review the following design considerations. An
overview of the entire installation process will help to ensure a successful installation.
•Perform a bench test of all hardware to ensure functionality before you start.
•When installing the sensor, be careful not to route the sensor flex tail and power
wires near the backlight inverter or power supply of the LCD.
•Ensure that nothing contacts the sensor – it should be mechanically decoupled by the
recommended foams.
•Before installing the sensor, be sure to account for the space needed by the sensor
and its flex tail.
•The bezel may need to be modified to accommodate the sealing gasket and sensor.
When trimming the bezel, make sure that the mechanical integrity of the display is
not compromised.
•The sensor flex tail is designed to be flexible, and it may be creased once in a single
direction, in multiple locations along the tail. It should then be secured in place with
a light adhesive tape. Avoid angular creases (45°) to the flex tail directly in the area
of the tail bond and tape strain relief.
•If it is necessary to remove the sensor from the display after it has been attached, do
not pry it off. Carefully follow the instructions given.
CAUTION
To reduce the risk of glass breakage which may result in minor or moderate
injury:
Do not try to pry the sensor off the LCD if you need to remove the sensor for
servicing. You may break the glass and injure yourself or others.
•Be sure to follow the solvent manufacturer's precautions and directions for use when
using any solvents. Follow the manufacturer’s directions for suitable chemicals for
your display.
•When reassembling the sensor and bezel, be sure not to tighten any one corner more
than the other corners. Pressure should be evenly distributed across the sensor.
Mechanical Considerations
Flex Tail Routing
To minimize the risk of electromagnetic interference, never run the sensor flex tail near
or over the display backlight inverter or power supply. The noise generated by an
inverter covers a broad spectrum and can contain frequencies close to the signal
frequency.
The sensor flex tail is not a handle. Never pick your sensor up by the flex tail. It is an
electrical connection and is not designed for high stress.

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Do not place constant stress on the flex tail during handling or integration. Do not expose
the flex tail to mechanical stresses because of the integration design. Provide adequate
slack to ensure there is no straining on the flex tail. Avoid lateral pulls that may
overstress the outermost electrical contacts on the glass.
The sensor flex tail is designed to be flexible, and it may be creased once in a single
direction, in multiple locations along the flex tail and then secured in position with a
light adhesive tape. Avoid angular creases (45°) to the flex tail directly in the area of the
bond and tape strain relief.
The sensor flex tail should not move freely after assembly. Apply tape or another light
adhesive to secure the flex tail in a manner that does not apply stress to the flex tail.
Apply tape or other insulating material to exposed sharp edges to protect the flex tail.
Route the flex tail away from sharp edges whenever possible. If this cannot be avoided,
secure the tail so it does not move.
Sealing Gasket to Bezel
Proper gasketing is critical to any successful sensor integration. All displays, regardless
of environment, will be exposed to dust, dirt, spills, and grime and should be sealed with
gaskets. Gasketing is relatively simple and straightforward.
3M Touch Systems strongly recommends that you use single-sided 3M vinyl foam tape
4508 for the full-perimeter bezel sealing gasket. This product has been tested and
qualified for this application. 3M 4508 is a durable, flexible closed cell vinyl tape that
can help seal out dust, light and moisture when placed under 30% compression. This
vinyl tape offers excellent aging characteristics and will remain flexible when exposed to
elevated temperatures and UV light. It is essential that the user evaluate any alternative
gasket product to determine whether it is suitable for their particular purpose and method
of application.
Single-sided tapes, adhered to the bezel, make for easy sealing of the sensor. Simply
align and adhere the tape to the bezel edge. Gaskets should contact the sensor perimeter
to ensure a good seal without interfering with the viewing area.
Note: The compression must be evenly distributed to the glass surface. Be aware of and
follow material manufacturer’s recommended compression specifications.

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Mounting Tape to the Display
The 3M™ MicroTouch™ DST2270DX sensor comes with 3M 5962 and 5925 VHB™
acrylic foam mounting tape already applied to the surface that attaches to your display.
This 0.2 inch (5.08 mm) wide mounting foam tape was selected for its mechanical and
thermal properties to help ensure your sensor integration is successful.
Together, the mounting tape and the bezel-sealing gasket serve to mechanically decouple
the sensor from potential interference.
This mounting tape intentionally stops about an inch from the piezos to keep from
interfering with the electrical components on the corners.
Note: For ease of maintenance, put a border of polyimide tape around the perimeter of
the LCD. Then adhere the 3M VHB mounting tape to the polyimide tape. The polyimide
tape will enable you to easily remove the VHB tape if the need arises.
Strips of thin, foam tape (VHB 5962 and VHB 5925) with adhesive on both sides are
already attached to the sensor. Use these strips to attach the sensor to the display metal
frame. The sensor must be mounted such that the spacing between the sensor and display
does not vary due to compression or expansion from touch forces or temperature
changes. Failure to mount the sensor in this fashion may result in reduced functionality.
No mounting tape in
this area
Mounting Tape to Display
3M 5962 and 5925
Bezel
Sensor
Sealing Gasket to Bezel 3M 4508
Display

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Note: If for any reason you need to replace these mounting tapes, you must use 3M
brand VHB 5962 and VHB 5925 tapes. These tapes are an integral part of the DST
system and were chosen for their mechanical and thermal properties and will ensure
optimal performance.
It is essential that the user evaluate this product to determine whether it is suitable for
their particular purpose and method of application.
Grounding Considerations
CAUTION
To reduce the risk of potentially hazardous situations associated with the
handling of large sheets of glass which may result in minor or moderate injury or
property damage:
•Be sure to exercise extreme caution in handling the edges of the sensor with the
copper tape applied. The edge of the tape is very sharp.
For additional EMI shielding, 3M Touch Systems has applied a conductive adhesive
copper tape to three sides of the sensor. This 1/2 inch wide tape is available from 3M as
part number 2800221, cross-reference Chomerics part number CCH-36-101-0050. On
narrow border sensors, the tape is 13/32 inch wide (p/n 36232).
The copper tape overlaps the flex tail polyimide strain relief. It also overlaps at the
sensor corners as shown below:

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Be sure to ground the front of the sensor to the chassis with additional strips of copper
tape as shown below. 3M Touch Systems recommends at least 2 grounding strips to a
side (6 in total) to provide redundant links. Do not put copper tape all around the edges
of the sensor.
Touch System Location
Keep in mind the optics of the sensor. Remember that different sources of light such as
outdoor (natural sunlight) and indoor (incandescent or fluorescent) can cause different
effects when viewing the sensor.
Remember that lighting changes over the course of a day and depends on weather.
Consider the brightness of an area and how it will affect readability of the computer
display.
Consider using high brightness displays for better readability in bright ambient light
conditions. Remember that sunlight comes in at different angles throughout the year.
What might not be a problem in the summer could be an issue in winter.
The display is a sensitive electronic device. Do not install the display in areas where
extreme vibrations may be generated. For example, nearby manufacturing equipment
may produce strong vibrations. The vibrations may cause the display to exhibit picture
discoloration or poor video quality.
Electromagnetic interference can cause problems with any electrical device. Be aware of
devices that generate electrical fields, such as radio transmitters, pager transmitters, and
security tag deactivators, and plan your installation accordingly.
Designing Software Applications
With any touch application, the software design can be crucial to the usability of the
final product. Clear icons, bright contrasting colors, large buttons, button placement, and
simple layouts will contribute greatly to the success of your installation.
Copper Tape

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Parallax, the effect of a target object appearing in different positions when looked at
from different angles, is a common problem in many computer applications. The
combination of the sensor in front of the display and differing heights of users can cause
parallax. When designing your touch system software application, use the following
guidelines to help reduce the effects of parallax.
• Design large buttons to facilitate touch. Remember that a fingertip is much larger
than a cursor.
• Design larger active border areas for buttons. For example, if the button graphic is 1
inch x 1 inch, the active touch area behind it could be 2 inches x 2 inches. Be careful
to allow sufficient space between buttons also.
• Keep buttons away from the edges and corners of the sensor. If this is impossible,
make sure the active touch areas extend to the outer edges of the viewing area.
• Place buttons horizontally whenever possible. One size does not fit all! Consider the
varying heights of users and thus viewing angles when designing the application.
• Make sure there is adequate space between buttons so touches do not overlap.
• 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.
Button Graphic
Active Touch Area