Humminbird 981 manual Track MIN Distance, MAP Datum, Export ALL NAV Data, Delete ALL NAV Data

98x_Manual_531376-1_A.qxd 2/23/2005 11:40 AM Page 74

TRACK MIN DISTANCE

(Advanced)

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.

MAP DATUM

(Advanced)

Map Datum allows you to change the map coordinate system used by the 900 Series™ to match those of a paper map.

To change the Map Datum setting:

1.Make sure you are in Advanced User Mode, then highlight Map Datum on the Navigation main menu.

2.Use the LEFT or RIGHT 4-WAY Cursor Control keys to change the Map Datum setting. (Default = WGS 84)

EXPORT ALL NAV DATA

(Advanced)

Export All Nav Data allows you to export all saved Tracks, Waypoints and Routes to an MMC/SD card.

To Export All Navigation Data:

1.Make sure you are in Advanced User Mode, and that an optional-purchase MMC/SD card is installed in the slot, then highlight Export All Nav Data on the Navigation main menu.

2.Use the RIGHT 4-WAY Cursor Control key to export all navigation data.

DELETE ALL NAV DATA

(Advanced)

Delete All Nav Data allows you to delete all saved Tracks, Waypoints and Routes. This menu choice should be used with caution.

To Delete All Navigation Data:

1.Make sure you are in Advanced User Mode, then highlight Delete All Nav Data on the Navigation main menu.

2.Use the RIGHT 4-WAY Cursor Control key to delete all navigation data.

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