18 tPC-650 User's Manual
2.6 Adjusting LCD Contrast (for TPC-650S
only)
The default setting of the STN LCD contrast may not fit individual
applications. To get the most appropriate display, users can adjust the
VR (variable resistor) on the I/O board. This VR is accessible by screw
drivers through the hole on the rear case.
Figure 2-10: Adjusting LCD contrast
2.7 Touchscreen Calibration
If the optional Windows CE
®
OS or Advantech HMI software package
is purchased with the TPC-650, you will find a touchscreen driver
which can calibrate its sensitivity:
1. Click Start/Settings
2. Click Control Panel
3. The Control Panel window pops out. Double click touchscreen icon.
4. Press the touchscreen at the radial button with a finger or another
pointing tool harmless to the touchscreen.
