Furuno MFD8/12/BB manual GPS fix changes

	the raw GPS fixes. A setting between 000 to 999 is available. The higher
	setting the more smoothed the raw data, however too high a setting
	slows response time to change in latitude and longitude. This is
	especially noticeable at high ship’s speeds. Increase the setting if the
	GPS fix changes.
	During position fixing, ship’s velocity (speed and course) is directly
	measured by receiving GPS satellite signals. The raw velocity data may
	change randomly depending on receiving conditions and other factors.
SOG/COG	You can reduce this random variation by increasing the smoothing. Like
Smoothing	with latitude and longitude smoothing, the higher the speed and course
	smoothing the more smoothed the raw data. If the setting is too high,
	however, the response to speed and course change slows. For no
	smoothing, enter all zeroes.
	Every GPS satellite is broadcasting abnormal satellite number(s) in its
	Almanac, which contains general orbital data about all GPS satellites,
	including those which are malfunctioning. Using this information, the
Disable	GPS receiver automatically eliminates any malfunctioning satellite from
Satellite	the GPS satellite schedule. However, the Almanac sometimes may not
	contain this information. If you hear about a malfunctioning satellite from
	another source, you can disable it manually. Enter satellite number
	(max. 3 satellites) in two digits.
INIT.	Set initial latitude/longitude position for cold start.
Position
ANT.	Enter the GPS antenna positioning bow-stern and port-starboard
Position	position.
ANT. Height	Enter the height of the GPS antenna unit above sea surface.
Rx Mode	Choose position fixing method: 2D (three satellites in view), 2D/3D
	(three or four satellites in view whichever is greater).
WAAS Mode	Select ON to use the WAAS mode.
WAAS	WAAS satellite can be searched automatically or manually. For manual
Search	search, enter appropriate WAAS satellite number.
WAAS Alarm	When the WAAS signal is lost, the audible alarm sounds one of two
	ways. On: Alarm sounds continuously until the WAAS positioning mode
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