FAQ & Troubleshooting
We encourage first-time Customers to save time by checking FAQ's before sending inquiries. The answers to FAQ's contain solutions that alleviate the need to wait for a response from our service staff.
QWhat is required for touch screen use?
QWhat is the cost of implementing touch screens?
QIs quick delivery possible with small quantity purchases?
QHow are touch screens mounted to LCD's?
QI would like to know about touch controllers and calibration.
QWhat is the structure of a resistive touch screen?
QHow does a resistive touch screen detect touched points?
QWhat is the operational life of a resistive touch screen?
QCan I use gloves on a resistive touch screen?
QDo resistive touch screens recognize multiple touched points simultaneously?
QCan touch screens be tailored to my needs?
QWhat communication systems do DMC resistive touch controllers support?
QAre there any resistive touch controllers that support PS/2?
QCan I use the resistive touch controller with a 3.3V power supply?
QIs there a circuit diagram for resistive touch controllers that I can refer to?
QDoes DMC provide software specification sheets detailing commands?
QPlease tell me how to mount a resistive touch screen.
QHow do resistive multi-touch type (MTR) touch screens differ from 4-wire and 5-wire resistive touch screens?
QWhat is the MTR touch screen structure?
QHow many touched points can be detected by MTR touch screen at a time?
QWhat is the maximum size of the MTR series?
QWhat OS is supported by MTR series?
QDo you need driver software to operate the MTR series?
QIs there a standard MTR series lineup?
QHow long is the MTR series operational life?
QCan I operate the MTR series with gloves?
QCan I use the MTR series with a 3.3V power supply?
QWhat communication systems do MTR series support?
QWhat is the maximum size of the capacitive multi-touch type?
QHow much of a gap distance is recommended between LCD and the capacitive touch screen?
QWhat OS are supported?
QCan I purchase a capacitive multi-touch type screen without development costs?
QWhat is the size range of the capacitive multi-touch type standard lineup?
QHow does capacitive multi-touch type detect touched points?
QWhat is the operation durability of the capacitive multi-touch type?
QCan the capacitive multi-touch type touch screen be used with gloves?
QCan you make the capacitive touch screen surface flat?
QIs there a limitation on the thickness of cover glass for capacitive touch screens?
QHow many points can the capacitivev touch screen detect simultaneously?
QCan the capacitive touch screen be used with a 3.3V power supply?
QIs the capacitive touch screen compliant with RoHS?
QWhat is the recommended structure for capacitive touch screens mounted on LCD.
QCan you provide examples of touch screen module DTM connection?
QWhat is the resistive touch screen's multi-screen operation.
Touch screen, controller, controller cable and driver software are required. In addition, a host computer in which the driver software can be installed and a monitor on which the touch screen can be mounted are necessary.
e.g.) For a 15-in. touch screen via USB connection, AST-150A080A (touch screen)+TSC-54/RU (touch controller)+TSC-10/SC (controller cable)+driver software (provided free)
Cost depends on size, quantity, and specifications. Please contact us for more details.
Standard touch screens are always in stock and prompt delivery is our policy. *Be advised, however, that in the unlikely event that stocks are low, delivery may be delayed.
We can mount touch screens onto LCD's in our clean room. *This service is only available for DMC touch screens.
[Posted on January 23, 2008]
Calibration adjusts current content and figures to the standard content and figures.
Calibration refers to the alignment of touched points with cursor location (coordinate value).
There are many types of touch screens. Although some do not require calibration, many touch screens require calibration before use.
Calibration is usually performed on the setting screen of a device driver (mouse emulation software). There are two methods of calibrating DMC touch controllers. One is to calibrate by host PC and save calibration data in the host PC. The other is to calibrate by controller and save the calibration data in the EEPROM on the controller. In both cases, calibration is performed on the monitor screen. The difference in features and operations are described below.
[Features] Multiple calibration functions are executed by a powerful CPU.
Example 1: Manufacturing machine with 2 monitors. Calibration functions are executed in the driver.
- ・Driver development load such as for embedded devices is smaller.
- ・Calibration data is saved in the TP controller inside the monitor of a touch screen. Therefore, when the monitor is replaced, re-calibration is unnecessary.
Example 2: Embedded machine. Calibration is executed inside the controller (EEPROM Calib. mode).
4-wire touch screens come with a ten-million-touch guarantee, and 5-wire touch screens come with a 35-million-touch guarantee.
Yes, resistive touch screens respond to gloves.
Resistive multi-touch type can detect more than one touched point at the same time. 4- and 5-wire resistive single-touch type can detect one touched point only. When two points are touched at the same time, the middle point is detected.
Yes, we can customize our touch screens to meet your needs. Please contact us for more details.
TSC-50/IC supports asynchronous serial (RS-232C) and USB communication (USB2.0 Full Speed). TSC-40/IC supports asynchronous serial (RS-232C) communication only.
We're sorry, but DMC does not currently have controllers that support PS/2.
Yes, please use TSC-50/IC. TSC-50/IC can be used in the power supply range of 3.00 - 5.25V.
Yes, please refer to the Touch Controller TSC-54 Series specification sheets.
Software specifications are not available on the website; however, we are happy to provide them upon request. Please contact us.
We provide mounting guidance. Please check here.Recommended touch screen assembly structure for film/glass type
Adobe Acrobat® Reader is required.
When 2 points are touched at one time, 4- and 5-wire resistive touch screens detect the middle point between the two.
MTR touch screens can detect two points when two different cells are touched.
When two points are touched within a single cell, MTR touch screens detect the middle point between the two.
Up to 2 points can be detected at a time. When 3 or more points are touched, only the first 2 points are detected, and other points are ignored. There are some limitations of the multi-touch function. These are described below.
Standard product lineup is up to 15 in. *Please consult with us if you need a MTR touch screen larger than 15 in.
Windows XP and 7 (operated with HID protocol). *For other OS, please consult with us.
The MTR series can be operated with Windows standard driver.
Yes, please see the MTR series product page.
The MTR series applies the 4-wire system as the base and guarantees 10 million touches. They offer high durability and versatility.
Yes, you can operate the MTR series with pens and gloves, which makes these suitable for FA and medical devices, and environments where it is hard to input data with bare hands.
No, the MTR series power supply needs to be between 4.75 and 5.25 V.
Up to 32 in. wide.
1mm or more. Keep the touch screen at least 1mm away from the LCD. See the recommended structure of touch screens mounted on LCD's.
Windows XP, Vista, 7, CE*, Linux* *Please contact us for details.
Yes, our standard DUS/EXC series projected capacitive touch screen lineup can be purchased without any development costs.
The standard EXC series lineup is from 5.7 to 32 in. wide. See the EXC and DUS series lineups.
The mechanism is shown below. Please check the capacitive touch screen page for more details.
Over 50 million touches.
Yes, DMC touch screens can be adjusted to the environment. We can make proposals for materials and glove thickness depending on customer needs and use environment.
Yes, we can make the surface flat by mounting a cover glass on the touch screen. Please check individual product pages for details.
Yes. It depends on size of the touch screen. Please contact us for details.
Up to 10 points (depending on touch screen size as well as the thickness of the cover glass/ acrylic cover).
No, the touch screen requires a 5V power supply.
Below is an explanation of the use of DTM series using DMT-057CT03A.
1. Use a host computer containing an OCD controller. Input 6 bit video signal of R, G, B. from LCD controller.
2. Connect an inverter for LCD back light.
3. Connect the touch screen and touch controller. Connect them to the host computer via RS-232C/USB.
4. Install the touch screen driver into the host computer to allow the OS to operate the touch screen.
DMC provides a driver compatible with Windows9x/Me/NT4/2000/XP/Vista/7, WindowsCE, Linux (X-Window).
The driver compatible with Windows9x/Me/NT4/2000/Vista/7 is available on our website.
[Updated on Oct 15, 2018]
[Updated on Aug 22, 2011]
[Updated on Sep 22, 2010]
[Updated on Mar 7, 2007]
Multi-screen operation refers to an environment in which multiple touch screens are connected to one host computer and allowed to operate separately. DMC touch controller and mouse emulation software enables to up to 4 touch screens to be operated (2 via USB connection + 2 via serial (RS-232C) connections) with one host computer.
Usually, a host computer can identify multiple touch screens only if they are connected by RS232C. With an RS232C connection, unique IRQs and port addresses are assigned to each serial port. The host computer can distinguish each touch screen by recognizing the different IRQ and port addresses.
On the other hand, multiple touch screens could not be identified with a USB connection because USB devices share the same IRQ and port address. Theoretically, therefore, we could not connect the same USB touch controllers to a single computer.
DMC touch controller allows 2-display operations. It enables the computer to recognize that there are "different" devices by setting mode when resetting the touch controller (by modifying the USB descriptor according to the location of the pin for mode setting, either Hi or Lo, to provide a different ID to each USB controller).
In addition, when the EEPROM is connected to the touch controller (TSC-50/IC), the above-mentioned device ID information can be stored in the EEPROM. This makes setting in the hardware unnecessary. Of course, calibration data can be assigned to each touch screen individually.
With DMC mouse emulation software, user levels can be assigned to the connected touch screens. User levels define the authority level for each touch screen.
|Admin:||If the user level is "Admin", the touch screen can be operated at any time regardless of the operation status of the other touch screens. Even if other touch screens are operated, the operation right moves to the touch screen with "Admin" authority.|
|User:||If the user level is "User", the touch screen can be operated only when no other touch screens are operated. If other touch screens are operated, a touch screen with "User" authority cannot be operated until operation of the other touch screens has ended.|
|Operation right||If one of multiple touch screens is operated, the operated touch screen has the operation right. A touch screen with "Admin" authority can always achieve operation right while "User" authority allows a touch screen to achieve operation right only when no other touch screen owns the operation right. When another touch screen has the operation right, touch screens with "User" authority can obtain the operation right only when a certain period of time has passed after the other touch screen has released its operation right. The release time can be modified in the configuration of the mouse emulation software.|
This system performs ordinary operations in the front yard and monitoring, operation management and maintenance in the back yard.