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C-39
Table C.4
SecureTouch Touchmonitor 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. IntelliTouch technology has been operationally
tested to more than 50 million touches in one location without
failure, using a stylus similar to a finger.
Optical
Light Transmission
(per ASTM D1003)
92%
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)
Clear surface: N/A
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).