Furuno 1823C manual Contents of GPS setup menu con’t from previous

5. CUSTOMIZING YOUR UNIT

Contents of GPS setup menu (con’t from previous page)

Item	Description	Settings
Position	When the DOP or receiving condition is unfavorable,	0-999 seconds
Smoothing	the GPS fix may change greatly, even if the vessel is
	not moving. This change can be reduced by smoothing
	the raw GPS fixes. A setting between 000 to 999 is
	available. The higher the setting the more smoothed
	the raw data. If the setting is too high, the response
	time required to show a change of latitude and
	longitude will be too long. This is especially noticeable
	if the vessel is moving fast. Increase the setting if the
	GPS fix changes randomly.
Spd/Cse	During position fixing, ship’s velocity (speed and	0-999 seconds
Smoothing	course) is directly measured by receiving GPS satellite
	signals. The raw velocity data may vary too much
	depending on receiving conditions and other factors.
	You can reduce this random variance by increasing the
	smoothing. The higher the smoothing setting, the more
	the raw data will be averaged. If this setting is high, the
	response to speed and course changes will slow. For
	no smoothing, enter all zeroes.
GPS	Calculation of ETA is based on average ship’s speed	0-999 seconds
Speed	over a given period. If the period is too long or too
Averaging	short, calculation error will result. Change this setting if
	calculation error occurs. The default setting is suitable
	for most conditions.
Latitude,	Offsets latitude position to further refine position	0.001’S – 9.999’N
Longitude	accuracy.	0.001’E – 9.999’W
Offset

(Con’t on next page)

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