Chapter 4: Configuration
Screen Blanking
Psion VH10 Vehicle-Mount Computer User Manual
54
Intensity
This parameter is used to adjust the light intensity of the VH10 backlight. Sliding the bar to the left lowers
the light intensity, and sliding it to the right raises the intensity.
Bright For
The value chosen from this drop-down menu determines the duration of time that the backlight stays on at
the configured intensity after the last user action (e.g. keypress).
Dim For
The value chosen from this drop-down menu determines the duration of time that the backlight 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 (e.g. keypress). At the expiration of the Dim For duration, the display backlight
shuts off.
External Power check box
When you select the check box next to
When using external power keep the backlight always ON
, the back-
light remains ON at the configured intensity when the VH10 is operating with external power (not battery
power). If the VH10 is drawing power from its battery, this option is ignored and the other parameters
defined in
Display Properties
dialog box take effect.
4.7.4
Screen Blanking
Screen Blanking turns the screen off when the vehicle is moving, and back on when the vehicle is stopped.
The
Display Properties
dialog box in the
Control Panel
allows you to enable or disable this feature, and set a
delay time for the screen to turn off and on.
•
In the
Display Properties
dialog box, open the
Screen Blanking
tab.
Note: Backlight changes take effect immediately. You do not need to reset the unit.
To maximize battery run time, when the VH10 is not on vehicle or AC power, it enters into UPS
Battery Power mode (see also “Power Saving Suspend” on page 70), and the backlight is auto-
matically dimmed.
Note: For this feature to be available, appropriated wiring must be installed. For detailed instruc-
tions for the electrical installation of the screen blanking option, see “Screen Blanking Option:
Wiring” on page 132.