Chart Orientation; North Reference; Trolling Grid Rotation; Trackpoint Interval - Humminbird ] 981 Installation & Operation Manual

98x_Manual_531376-1_A.qxd 2/23/2005
whether 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.
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)
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CHART ORIENTATION

Chart Orientation allows you to select

NORTH REFERENCE

North Reference allows you to have
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°)
time 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.
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TROLLING GRID ROTATION

Trolling Grid Rotation allows you to set

TRACKPOINT INTERVAL

Trackpoint Interval allows you to select the