User's Manual

Table Of Contents
Chapter 5: Configuration
Display Properties
100 Psion Teklogix 7545 Hand-Held Computer User Manual
Bright For
The value chosen from this drop-down menu determines the duration of time that the back-
light stays on at the configured intensity after the last user action (keypress, scan trigger).
Dim For
The value chosen from this drop-down menu determines the duration of time that the back-
light stays on at half the configured intensity (dimmed backlight) after expiration of the
Bright For delay and as long as no user action takes place (such as a keypress or scan trig-
ger). At the expiration of the Dim For duration, the display backlight shuts off.
External Power Checkbox
When you select the checkbox next to When using external power keep the backlight always
ON, the backlight remains ON at the configured intensity when the 7545 is operating with
external power (not battery power). If the 7545 is drawing power from its battery, this option
is ignored and the other parameters defined in Display Properties dialog box take affect.
5.6.3.4 Contrast
The Contrast tab allows you to adjust the display contrast to suit the environment in which
you are using the 7545. The contrast control can also be used to reduce display flickering
that can occur with colour displays in certain lighting conditions.
•In the Display Properties dialog box, open the Contrast tab.
Slide the bar in the Contrast tab to the left to decrease or darken the display contrast.
Slide the bar to the right to increase or lighten the display contrast.
Preliminary Draft 3