Advantech FPM-8192V/8232V Touchscreen Solution Optional, Five-Wire Resistive Touchscreen Optional

1.2Touchscreen Solution (Optional)

1.2.1Five-Wire Resistive Touchscreen (Optional 1)

Introduction to Five-Wire Resistive Touchscreen

The five-wire resistive touchscreens use a glass panel with a uniform resistive coat- ing. A thick polyester coversheet is tightly suspended over the top of the glass, sepa- rated 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 prevent- ing 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	Touchpoint 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

FPM-8192V/8232V User Manual 4