Lowrance electronic LMS 335C DF - Manual (Page 173)

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System Menu with Reset Options command selected.
Require WAAS
You can force the unit to require WAAS for reporting a valid position.
(The default setting, off, uses WAAS automatically, but doesn't require
it to yield a position.) Here's how to turn it on and off:
1. Press MENU | MENU |
↓ to
GPS S ETUP
| ENT |
↓ to
R EQUIRE WAAS | ENT .
2. To return to the last page displayed, press EXIT | EXIT .
3. You can return to this command and press ENT again to turn the fea-
ture off.
Require WAAS command on the GPS Setup Menu.
Screen Contrast and Brightness
To access the Screen menu, press MENU | MENU | ENT .
Once in the Screen menu:
To adjust the display's contrast:
The C
ONTRAST
slider bar is already selected. Press
→ or ← to move the
bar. The left end of the scale is minimum contrast; the right end is
maximum contrast.