Winmate R15IV3S-MR series, User Manual

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User Manual Marine Bridge Panel PC System 10
1.3 Touch Screen Solution (Optional)
1.3.1 Five-Wire Resistive Touch screen (Optional 1)
Introduction to Five-Wire Resistive Touch screen
The five-wire resistive touchscreens use a glass panel with a uniform resistive coating. A thick
polyester coversheet is tightly suspended over the top of the glass, separated by small,
transparent insulating dots. The coversheet has a hard, durable coating on the outer side and
a conductive coating on the inner side.
When the screen is touched, the conductive coating makes electrical contact with the coating
on the glass. The voltages produced are the analog representation of the position touched.
The controller digitizes these voltages and transmits them to the computer for processing. The
five-wire technology utilizes the bottom substrate for both X and Y-axis measurements. The
flexible coversheet acts only as a voltage-measuring probe. This means the touchscreen will
continue working properly even with non-uniformity in the cover sheet's conductive coating.
The result is an accurate, durable and reliable touchscreen that offers drift free operation. The
touchscreens are sealed against contamination and moisture. The coversheet is sealed to the
glass substrate with an industrial grade caulk. This prevents wicking of fluid between the
coversheet and glass. Also, the touchscreens are not air vented, thereby preventing fluid
ingress through an air vent.
Brief Specifications
Subject Details
Input Method Finger, gloved hand, or stylus activation
Positional Accuracy Standard deviation error is less than 0.080 (2 mm)
Resolution Touch point density is based on controller resolution of 4096 x
4096
Touch Activation Force Typically less than 4 ounces (113 grams)
Light Transmission HL products: 80% +/
–5% at 550 nm wavelength
Enhanced products: 60% +/
–5% at 550 nm wavelength
Update touch-screen driver or new information. Go to www.elotouch.com