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 MENUMENU↓ to GPS SETUPENT↓ to REQUIRE WAASENT.
2.To return to the last page displayed, press EXITEXIT.
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 MENUMENUENT.
Once in the Screen menu:
To adjust the display's contrast:
The CONTRAST 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.
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