C-27
Table C.1
iTouch 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 touchpoints/in
2
(15,500 touchpoints/cm
2
).
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.
iTouch 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)
100%
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.
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).
Summary of Contents for ET 1525C Series
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