Appendix B Optional Touchscreen
B.1 Specifications
Electrical |
|
Operating Voltage: | 3.3 to 5 VDC typical |
Sheet Resistance: | 350 ± 22% W/square |
Linearity: | +/- 1.5% full scale linearity error in either |
| direction. |
Insulation Resistance: | > 20 ΜΩ @ 25 VDC. |
Optical
Total light Transmission: 75% typical (> 74% @ 550 nm test)
Environmental |
|
Operating Temperature Range: | |
| RH |
Storage Temperature High: | +70°C, 240 hours at ambient humidity |
Storage Temperature Low: | |
Accelerated Aging: | 100 hours continuous exposure at |
| 60°C/95% RH |
Thermal Shock: | 25 cycles (one cycle is 30 min. dwell |
| alternating from |
| 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 |
| < 50 g average with 5/8” diameter sili |
| cone finger |
30 |