Elo TouchSystems 1827L, 1825L manual Positional Accuracy

Table C.3 AccuTouch Touchmonitor Specifications

Mechanical

Construction	Top: Polyester with outside hard-surface coating with clear or
	antiglare finish.
	Inside: Transparent conductive coating.
	Bottom: Glass substrate with uniform resistive coating. Top and
	bottom layers separated by Elo-patented separator dots.
Positional Accuracy	Standard deviation of error is less than 0.080 in. (2.03 mm). This
	equates to less than ±1%.
Touchpoint Density	More than 100,000 touchpoints/in² (15,500 touchpoints/cm²).
Touch Activation Force	Typically less than 4 ounces (113 grams).
Surface Durability	Meets Taber Abrasion Test (ASTM D1044), CS-10F wheel, 500 g.
	Meets pencil hardness 3H.
Expected Life	AccuTouch technology has been operationally tested to greater than
Performance	35 million touches in one location without failure, using a stylus
	similar to a finger.
Optical
Light Transmission	Typically 75% at 550-nm wavelength (visible light spectrum).
(per ASTM D1003)
Visual Resolution	All measurements made using USAF 1951 Resolution Chart, under
	30 X magnification, with test unit located approximately 1.5 in. (38
	mm) from surface of resolution chart.
	Antiglare surface: 6:1 minimum.
Haze (per ASTM D1003)	Antiglare surface: Less than 15%.
Gloss (per ASTM D2457)	Antiglare surface: 90 ± 20 gloss units tested on a hard-coated front
	surface.

C-33