Furuno GD-1900C, 1933C, 1943C 3-14, Contents of GPS sensor settings menu, Continued on next page

Contents of GPS sensor settings menu

Item	Description	Settings	Default Setting
Local Time Offset	Allows the user to use local time (instead	-13:30 to +13:30 hr	0 hr (no offset)
	of UTC time). Enter time difference
	between local time and UTC time. Use
	the + < - - > - soft key to switch from plus
	to minus and vice versa.
Geodetic Datum	Your equipment is preprogrammed with	Use the trackball or	WGS-84
	most of the major chart systems of the	[ENTER] knob to
	world. Although the WGS-84 system, the	select appropriate
	GPS standard, is now widely used other	chart.
	categories of charts still exist. Select the
	chart system used, not the area where
	your boat is sailing.
Position Smoothing	When the DOP or receiving condition is	0-999 sec	0 sec (no position
	unfavorable, the GPS fix may change,		smoothing)
	even if the vessel is dead in water. This
	change can be reduced by smoothing 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 shows response time to
	change in latitude and longitude. This is
	especially noticeable at high ship’
	speeds. Increase the setting if the GPS
	fix changes.
Spd/Cse	During position fixing, ship’s velocity	0-999 sec	5 sec
Smoothing	(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. You can reduce this
	random variation by increasing the
	smoothing. Like 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 zeros.
GPS Speed	Calculation of ETA is based on average	0-999 sec	60 sec
Average	ship’s speed over a given period. If the
	period is too long or too short calculation
	error will result. Change this setting if
	calculation error occurs. The default
	setting is 60 seconds, which is suitable
	for most conditions.
Latitude Offset	Offsets latitude position to further refine	9.999’S – 9.999’N	0.0’ (no offset)
	position accuracy. Use the N <- - > S soft
	key to switch coordinate.

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