Garmin 521 User Manual

Page of 84
4 
GPSMAP 400/500 Series Owner’s Manual
Configuring the Chartplotter
Heading—sets the reference used in calculating heading 
information.
auto Magnetic—automatically sets the magnetic declination for 
your location.
True—sets true north as the heading reference.
grid—sets grid north as the heading reference (000º).
User Magnetic—allows you to set the magnetic variation value.
Position format—change the coordinate style in which a given 
location reading appears. Do not change the position format unless 
you are using a map or chart that specifies a different position 
format.
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-hour24-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 (
) or on the Cruising data bar (
).
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.
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).