2 Hardware deskription
2.1 Operation Voltage capability:
Typical 12V DC (from tractor)
- Preferred: 8 .. 28V DC
- Minimum: 8 ..18V DC,
2.2 TFT Display:
Size: 4,3”, built in landscape direction
o Resolution: 480 x 272 dot matrix
o Colors: 64k
o Backlight LED
2.3 Front foil:
Keyboard backlight dimming, controlled by PWM (0-100%)
UV resistant front foil material
2.4 Buzzer:
o built into rear side,
o 60dB @30cm distance (Angel <=10° from center)
o Fix frequency of the buzzer, (rated frequency: 4.25kHz).
o Volume controlled by 16 steps. Fine loudness control is not possible because of the internal oscillator.
The reduced volume depends on the ambient temperature, too.
o IP65 sealed by the case, the component (buzzer) is not IP protected.
2.5 RTC:
Real time clock with removable/ exchangeable Lithium battery: Battery CR2032
o typical lifetime of the battery: 10 years from production (depends on the ambient temperature)
o replace by opening of the screwed housing.
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