User's Manual

Chapter 3: Getting To Know Your 7535

The Keypad Backlight

Psion Teklogix 7535 Hand-Held Computer User Manual

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 twice), press <2> to type the

letter ‘a’.

• Press <3> to type ‘d’, and press <4> to type the letter ‘g’.

• To end alpha selection, press the <ORANGE> key a third time to unlock it.

3.4.5 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 Control Panel.

The behaviour of the keypad backlight is tailored in the Keyboard Properties dialogue box.

Refer to “Keyboard Backlight” on page 93 for details about this option.

Note: Keep in mind that this option may be restricted to supervisory use only.

3.5 The Display

7535s 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.

3.5.1 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 dialogue box in the Windows CE Control Panel.

Note: Refer to “Display Backlight” on page 89 for details about the Display

Properties dialogue box.