User manual

Chapter 3: Getting To Know Your 7535/7530
Calibrating The Touchscreen
46
Psion Teklogix 7535/7530 Hand-Held Computer User Manual
The display contrast can be adjusted from the unit keyboard using the <BLUE> key
and function keys <F1> and <F2>. Pressing <F1> darkens the display, and
pressing <F2> lightens the display. Keep in mind that adjusting the contrast on
a colour display is much less pronounced than on a monochrome display.
To adjust the display contrast:
• Press the <BLUE> key twice to lock it on, and then press <F1> to
darken the display or <F2> to lighten the display.
• Once you’ve successfully adjusted the display contrast, remember to press
the <BLUE> key again to turn it ‘off’.
Note: Contrast settings are optimized for the maximum readability. However, if
the display jitters or flickers, consider adjusting the contrast at power up.
3.6.3 Calibrating The Touchscreen
If your 7535/7530 touchscreen has never been calibrated, or if you find that the
stylus pointer is not accurate when you tap on an item, use the Stylus Properties
dialog box in the Control Panel to recalibrate the screen.
•In the Control Panel, choose the Stylus icon to display the Stylus Proper-
ties window.
Figure 3.6 Stylus Icon