20 Version 3.3
Operator’s Manual Navigate
Navigate
There are four basic NAV screens. NAV4 only provides data if
appropriate sensors (i.e. wind speed/direction logs, NMEA com-
pass, etc.) are interfaced and activated on the receiver. The NAV
functions are highly interactive with the RTE1 screen, and a
number of CFG menu selections.
The RTE1 screen provides the active route for the NAV screens. It
also maintains a waypoint pass log for you. One other important
feature in the RTE1 screen that you need to be aware of, is that the
up and down arrow softkeys control which waypoints are skipped
(down arrow) and which are restored (up arrow) for your current
route. The ETA information is configured in the RTE 1 screen.
Refer to the Route section of the manual for a full description.
The following CFG menus directly impact the NAV functions:
Ø COG SOG - sets the filtering time for the displayed values
Ø Datum - sets the reference datum for your present position and
waypoints in the active route.
Ø GPS Offset - sets an offset for calculating the GPS antenna
position if you can’t physically locate the antenna exactly
where you want it (i.e. over the centerline of the boat)
Ø Navigation - sets a variety of important functions and alarms
ð Rhumb line or Great Circle navigation
ð Range units: nautical miles, nautical miles and meters
(when under 1000 meters), nautical miles and feet
(when under 1000 feet), statute miles, staute miles and
meters (when under 1000 meters), statute miles and
feet (when under 1000 feet), kilometers, or kilometers
and meters (when under 1000 meters)
ð Cross-track Error limit and alarm control
ð Waypoint pass criterion and distance: bisector line,
pependicular line, complex (combination of bisector
line and perpendicular line), distance to waypoint, or
manual
ð Waypoint Approach distance
ð Autopilot alarm control
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