User manual

Psion Teklogix 7535/7530 Hand-Held Computer User Manual 45
Chapter 3: Getting To Know Your 7535/7530
The Keypad Backlight
Suppose you want to type the letters ‘a’, ‘d’ and ‘g’. These alpha characters are
accessed from the numeric keys <2>, <3> and <4>.
• With the <ORANGE> key locked ‘on’, press <2> to type the letter ‘a’.
• Press <3> to type ‘d’, and press <4> to type the letter ‘g’.
• To end alpha selection, unlock the <ORANGE> key.
3.5.5 The Keypad Backlight
The intensity of the keypad backlight and the conditions under which this backlight
is activated can be configured using the Keyboard icon in the Windows CE .NET
Control Panel. The behaviour of the keypad backlight is tailored in the Keyboard
Properties dialog box. Refer to “Keyboard Backlight” on page 99 for details about
this option.
Note: Keep in mind that this option may be restricted to supervisory use only.
3.6 The Display
7535s and 7530s are equipped with display backlighting to improve character
visibility in low light conditions. The backlight switches on when a key is pressed
and the ambient light is below the set threshold. A light sensor on the front of the
hand-held determines the ambient light level. On some displays, the contrast can
also be adjusted to further improve character visibility.
3.6.1 Adjusting The Display Backlight
The behaviour of the display backlight – the ambient light threshold below which
the backlight will become active and the intensity of the backlight – can be specified
in the Display Properties dialog box in the Control Panel.
Note: Refer to “Display Backlight” on page 95 for details about the Display
Properties dialog box.
3.6.2 Adjusting The Contrast
Note: In addition to the manual adjustments described in this section, the dis-
play contrast can also be adjusted using the Windows CE .NET Control
Panel. Refer to “Display Backlight” on page 95 for details about this
dialog box.