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Table 7 IntelliTouch (surface acoustic wave) Technology
Touchscreen Specifications
Mechanical
Positional Accuracy
Standard deviation of error is less than 0.080 in. (2.03 mm). Equates
to less than ±1%.
Touchpoint Density
More than 100,000 touch points/in2 (15,500 touch points/cm2).
Touch Activation Force
Typically less than 3 ounces (85 grams).
Surface Durability
Surface durability is that of glass, Mohs’ hardness rating of 7.
Expected Life Performance
No known wear-out mechanism, as there are no layers, coatings, or
moving parts. IntelliTouch technology has been operationally tested
to more than 50 million touches in one location without failure,
using a stylus similar to a finger.
Sealing
Unit is sealed to protect against splashed liquids, dirt, and dust.
Optical
Light Transmission (per ASTM
D1003)
90%
Visual Resolution
All measurements made using USAF 1951 Resolution Chart, under
30X magnification, with test unit located approximately 1.5 in (38
mm) from surface of resolution chart. Clear surface: Excellent, with
no noticeable degradation. Antiglare surface: 6:1 minimum.
Gloss (per ASTM D2457 using
a 60-degree gloss meter)
Antiglare surface: Curved: 60 ± 20 gloss units or 75 ± 15 gloss
units.
Environmental
Chemical Resistance
The active area of the touchscreen is resistant to all chemicals
that do not affect glass, such as:
Acetone, Toluene, Methyl ethyl ketone, Isopropyl alcohol, Methyl
alcohol, Ethyl acetate, Ammonia-based glass cleaners, Gasoline,
Kerosene, Vinegar
Electrostatic Protection (per
EN 61 000-4-2, 1995)
Meets Level 4 (15 kV air/8 kV contact discharges).