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Figure 4.8 Touch-screen calibration
4.4.5.3 Display
From time to time it is unnecessary to turn on the display attached to the SPC all the
day. The Display page provides several frequently used functions such as turning off
the LCD and backlight to elongate the display repair period, adjusting brightness or
contrast. For example, if user wants the backlight turn-off setting function, he can
press "setting" button. Then the backlight page of Display Properties of Control Panel
will appear on the screen. Besides, user can click the "Off Now" button to turn off the
backlight of the display panel immediately without waiting. Once the backlight was
turned off, there were three inputs to turn it on: (1) mouse; (2) keyboard; (3)
touch-screen; user can use any one of them to turn on the display. The lower
“Brightness” and “Contrast” blocks have scroll bars by which users can tune
brightness level of TFT LCD or the contrast level of passive matrix LCD.
Figure 4.9 Display configuration