Humminbird 580 manual Spot Soundings, North Reference, Grid Rotation

Spot Soundings

Spot Soundings allows you to display or hide spot

soundings, which are depth measurements shown on the chart.

NOTE: Spot Soundings are only available with optional-purchase MMC/SD cards.

To change the Spot Soundings setting:

1.Highlight Spot Soundings on the Chart main menu.

2.Use the LEFT or RIGHT 4-WAY Cursor Control keys to change the Spot Soundings setting. (Hidden, Visible, Default = Hidden)

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)

Grid Rotation

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 Grid Rotation setting:

1.Highlight Grid Rotation on the Navigation main menu.

2.Use the LEFT or RIGHT 4-WAY Cursor Control keys to change the Grid Rotation setting. (0° to 89°, Default = 0°)

70