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Note: Using the screen back-
lighting can greatly re d u c e
b a t t e ry life. If you’re using
your GPS primarily in day-
light hours, you should keep
the backlight timeout at the
default 15-second setting.
25
Screen Backlighting
The GPS II
+
’s backlight feature illuminates the screen display for a user-defined
interval (the default is 15 seconds) after every keystroke. There are three stages of
backlighting. When backlighting is on, a bulb icon will appear at the bottom left of the
sky view (Fig. 25). To adjust the duration of the screen backlighting, refer to the opera-
tion setup section (see p. 75).
To turn the screen backlighting on:
1. Cycle through the three levels of backlight by pressing the red power key.
To turn the screen backlighting off:
1. Press the red power key.
Whenever the GPS II
+
’s backlighting is off, the bulb icon disappears from the
Satellite Page.
Fig. 25
gps ii + Mon (final?) 2/9/98 4:24 PM Page 25