35SBAS (satellite-based augmentation system) provides additional accuracy andreliability for the GPS devices. Ground stations are necessary to achieve thepurpose. The SBAS feature works where such stations exist. You can enablethe SBAS feature. (See “Settings” later.)Electronic CompassThe Electronic Compass page shows directions of movement includingorientation, pitch angle, roll angle, and azimuth angle.NOTE: Follow these guidelines when using the compass. Keep the device away from objects that generate magnetic fields, suchas cars, large belt buckles, computers, cell phones, etc. If you must use the compass inside a car, the device should be at least20 cm (7.87 inches) away from metal objects such as car doors,dashboard, air vents, etc. Avoid playing the MP3 music with the internal speaker or connectingthe AC adapter. This will cause the magnetic interference to thecompass.
