Appendix A Touchscreen; Introduction; Touchscreen Specifications - Advantech FPM-3150 Series User Manual

Appendix A Touchscreen

A.1 Introduction
The FPM-3150 Series' optional touchscreen uses advanced 8-wire resis-
tive technology. It provides more accurate sensing capacity than other
technologies. The touchscreen is specially designed for tough industrial
environments, and has been approved to FCC Class B standards.
A.2 Touchscreen Specifications
Electrical
• Contact bounce: < 10 ms
• Operating voltage: 5 V (typical)
• Sheet Resistance: 350 +/- 22% Ω per Square.
• Linearity: <1.5% full scale linearity error in either direction.
• Insulation Resistance: >20 MΩ @ 25VDC
Durability
• Test conditions: 4 H hardness, 0.04" stylus pen, 350 gram load
• Point activation:
1 Million activations on a single point with a 5/8" diameter silicone
finger with a 350g load at 2 Hz
• Character Activation Life:
>100,000 characters written within a 20 mm x 20 mm area on the touch
screen.
• Chemical resistance:
Hard coating is highly resistant to most solvents and chemicals
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