Select Setup > System.

GPS

Sets the GPS to Normal, WAAS/EGNOS (Wide Area Augmentation System/European Geostationary Navigation Overlay Service), or Demo Mode (GPS off). For more information about WAAS, go to http://www.garmin.com/aboutGPS/waas.html.

BaseCamp BaseStation

Sets how the device connects to BaseCamp™ when the device is connected to the computer.