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FPM-3220 User’s Manual 30
Appendix B Optional Touchscreen
B.1 Specifications
Electrical
Operating Voltage: 3.3 to 5 V
DC
typical
Sheet Resistance: 350 ± 22% W/square
Linearity: +/- 1.5% full scale linearity error in either
direction.
Insulation Resistance: > 20 ΜΩ @ 25 V
DC
.
Optical
Total light Transmission: 75% typical (> 74% @ 550 nm test)
Environmental
Operating Temperature Range: -20°C to +50°C, 2 weeks at 50°C/90%
RH
Storage Temperature High: +70°C, 240 hours at ambient humidity
Storage Temperature Low: -40°C, continuous at ambient humidity
Accelerated Aging: 100 hours continuous exposure at
60°C/95% RH
Thermal Shock: 25 cycles (one cycle is 30 min. dwell
alternating from -40°C
to +85°C with less than 10 min. trans
fer time).
Mechanical
Activation Method: Gloved or ungloved finger
Delrin or plastic stylus (no metal) with
1mm radius full hemispherical tip
Activation Force: < 25 g average with non-metal stylus
< 50 g average with 5/8” diameter sili
cone finger