Chapter 8 Touchscreen
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• Operating temperature:0 ~ 50° C (humidity 20 ~ 90% RH)
• Storage temperature: -25 ~ 70° C (humidity 20 ~ 95% RH)
8.1.3 NFI Touchscreen Specifications
Performance
• Touch inputs: gloved hand or bare finger; conductive stylus
• Touch speed: < 20ms nominal controller response time
• Resolution: minimum 1024 points per axis
• Touch positional accuracy: +/- 1.0% in one direction and +/- 2.0% in the
other direction
• Drift: none
Sensor
• Optical Transmissivity: > 83% standard product
• Construction: laminated layers of chemically strengthened glass
• Touch surface: anti-glare glass
Controller
• Communications: RS-232
• Power requirements: 5V +/- 5%, 4.75V minimum ; 150mA average, peaks
to 300mA
• Excitation signal on sensor: 50 to 60Khz 12V p-p
Software
• Dynapro drivers for: MS-DOS, Windows 3.1, Windows 95/98, Windows
NT4.0; support for other operating systems available
• Utilities: set-up and diagnostic utility included
Environmental
• Operating temperature: -20ºC to +70ºC for sensor 0ºC to +70ºC for
controller
• Storage temperature: -40ºC to +85ºC
• Humidity: 95% RH non-condensing
• ESD: exceeds EN 61000-4-2; 8kV air discharge, 4kV contact discharge
• EMI: unaffected by EMI from nearby CRT’s and displays, environmental
EMI; complies with ENV 50140
Reliability
• Touch life: tested to more than 100 million touches in one location
without failure
• Surface durability: equivalent to soda lime glass, Mohs hardness rating
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