Juniper Systems Archer 2 User Guide - Manual (Page 45)

Ch 3 Programs and Settings 41
Adjust the Backlight Control Panel
You can also subdue the keypad and display brightness
through the Backlight control panel. Press Start > Settings
> System > Backlight and then External Power or Battery
Power from the horizontal scrolling menu near the top of the
screen. Adjust the sliders as needed for both power sources.
Changes affect all operations.
Compass and Accelerometer Calibration
The Archer 2 has a built-in compass and accelerometer.
The compass is used for embossing GPS/GNSS information
on pictures taken with the camera, or embedding GPS/
GNSS information into jpg files. The compass is also used by
the JSNav program. The accelerometer assists the compass
in determining direction, even when the device is not
resting flat. (See Chapter 6, GPS/GNSS, JSNav Application
and Chapter 7, Camera, Geotagging.)
The compass and accelerometer can also be used by other
user applications.