Garmin GPSMAP 741xs Owner's Manual - Page 53

Map Datum-change the coordinate system in which the map is structured. Do not change the map datum unless you are using a map or chart that specifies a different map datum. Time-set the time options. • Time Format-select 12-hour, 24-hour, or UTC time format. • Time Zone-set the time zone you want displayed for time readings. If Auto is selected for the Time Zone, the DST option is not available and is automatically set to Auto. • DST (Daylight Saving Time)-select Off, On, or Auto. The auto setting automatically turns daylight saving time on or off, depending on the time of year. • Baro. Ref. Time-specify the reference time (from 30 minutes to 24 hours) used to calculate the barometric pressure trend. The trend is displayed on the wind gauge when ground wind is selected (page 35) or on the Cruising data bar (page 9). Changing the System Language To change the system language, from the Home screen, select Configure > Preferences > Language. Select the language. Configuring Navigation Preferences To change navigation preferences, from the Home screen, select Configure > Preferences > Navigation. Route Labels-for saved routes, this determines whether route turns are indicated by number (Turn 1, Turn 2, and so on) or by waypoint name, or whether the description of turns is hidden. Configuring the Chartplotter Turn Transition-set how much time or how far before a turn in a route that you transition to the next leg. Speed Sources-specify the sensor used for wind numbers and fuel economy. Select Wind or Fuel Economy to toggle between water (from a water-speed sensor) and GPS (from the calculated GPS speed). Auto Guidance-set the automatic guidance parameters: • Safe Depth-set the minimum depth (chart depth datum) to allow when calculating an automatic guidance path. A safe depth of less than one meter is not allowed when using automatic guidance. • Safe Height-set the minimum height (chart height datum) of a bridge that your boat can safely travel under. • Shoreline Distance-set the safe distance for your boat from the shore: Nearest, Near, Normal, Far, or Farthest. Shoreline Distance Auto Guidance Setting The Shoreline Distance setting indicates how close to the shore you want the auto-guidance line to be placed. The auto-guidance line may move if you change this setting while navigating. The available values for the Shoreline Distance setting (Nearest, Near, Normal, Far, or Farthest) are relative, not absolute. To ensure that the autoguidance line is placed an appropriate distance from shore, you can assess the placement of the auto-guidance line using one or more familiar destinations that require navigation through a narrow waterway. GPSMAP 400/500 Series Owner's Manual 47