Chart Orientation; North Reference; Trolling Grid Rotation; Trackpoint Interval - Humminbird 931C Installation And Operation Manual

93x_Man_531370-1_A - vs4.qxd 2/18/2005

CHART ORIENTATION

Chart Orientation allows you to select whether
the views containing charts should be drawn North-Up or Course-Up.
To change the Chart Orientation setting:
1. Highlight Chart Orientation on the Navigation main menu.
2. Use the LEFT or RIGHT 4-WAY Cursor Control keys to change the Chart
Orientation setting. (North-Up, Course-Up, Default = North-Up)
NOTE: The Chart Orientation setting does not apply to the Bird's Eye View.

NORTH REFERENCE

North Reference allows you to have bearings
displayed with one of two orientations: True North or Magnetic North.
To change the North Reference setting:
1. Highlight North Reference on the Navigation main menu.
2. Use the LEFT or RIGHT 4-WAY Cursor Control keys to change the North Reference
setting. (True, Magnetic, Default = True)

TROLLING GRID ROTATION

Trolling Grid Rotation allows you to set the
orientation of the trolling grid in degrees, where a setting of 0° displays a standard North,
South, East, West alignment. See Waypoints for information on how to set a Grid.
To change the Trolling Grid Rotation setting:
1. Highlight Trolling Grid Rotation on the Navigation main menu.
2. Use the LEFT or RIGHT 4-WAY Cursor Control keys to change the Trolling Grid
Rotation setting. (0° to 89°, Default = 0°)
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period between trackpoints. The current track can only contain up to 2000 trackpoints, so
longer time periods cause the track to extend back further in time, but will be less detailed.
NOTE: Trackpoint Interval works in conjunction with Track Min Distance. Both conditions
must be met before a trackpoint is added to the current track.
To change the Trackpoint Interval setting:
1. Highlight Trackpoint Interval on the Navigation main menu.
2. Use the LEFT or RIGHT 4-WAY Cursor Control keys to change the Trackpoint
Interval setting. (1 second, 5 seconds, 10 seconds, 15 seconds, 30 seconds or 60
seconds, Default = 15 seconds)
NOTE: During slow travel or drift, setting both Trackpoint Interval and Track Min Distance to
small values will allow you to increase the track resolution.
Track Min Distance allows you to set a minimum distance of travel before a trackpoint
is added to the track.
NOTE: Track Min Distance works in conjunction with Trackpoint Interval. Both conditions
must be met before a trackpoint is added to the current track.
To change the Track Minimum Distance setting:
1. Make sure you are in Advanced User Mode, then highlight Track Min Distance
on the Navigation main menu.
2. Use the LEFT or RIGHT 4-WAY Cursor Control keys to change the Track Min Distance
setting. (1 to 300 feet or 1 to 100 meters [International Units Only], Default = 16 ft, 5 m)
NOTE: During slow travel or drift, setting both Trackpoint Interval and Track Min Distance to
small values will allow you to increase the track resolution.
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TRACKPOINT INTERVAL

Trackpoint Interval allows you to select the time
TRACK MIN DISTANCE
(Advanced)