Lat-Lon Grid; Spot Soundings; Shaded Depth; North Reference - Humminbird Matrix 97 Operation Manual

To change the Lat/Lon Grid setting:
1. Highlight Lat/Lon Grid on the Navigation main menu.
2. Use the LEFT or RIGHT 4-WAY Cursor Control keys to change the Lat/Lon Grid setting.
(Hidden, Visible, Default = Hidden)
To change the Spot Soundings setting:
1. Highlight Spot Soundings on the Navigation main menu.
2. Use the LEFT or RIGHT 4-WAY Cursor Control keys to change the Spot Soundings setting.
(Hidden, Visible, Default = Hidden)
To change the Shaded Depth setting:
1. Highlight Shaded Depth on the Navigation main menu.
2. Use the LEFT or RIGHT 4-WAY Cursor Control keys to change the Shaded Depth setting.
(Off, 1 to 60 Feet, Default = 15 Feet)
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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Lat/Lon Grid
Lat/Lon Grid allows you to display or hide a grid showing latitude
and longitude lines.

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 on optional-purchase MMC charts.

Shaded Depth

Shaded Depth allows you to change the depth used for shading on
the chart views.

North Reference

North Reference allows you to have bearings displayed with one of
two orientations: True North or Magnetic North.