Garmin GPSMAP 546s - Manual (Page 57)

Configuring the Chartplotter
GPSMAP 400/500 Series Owner’s Manual 51
Setting Sonar Alarms
To set a sonar alarm from the Home screen, select Configure > alarms >
Sonar.
NOTE: You must be receiving NMEA sonar depth data or have a built-in sonar
with a temperature-capable transducer to view depth and water temperature
information.
Shallow water—set an alarm to sound when the depth is less than the
specified value.
deep water—set an alarm to sound when the depth is greater than the
specified value.
water Temp—set an alarm to sound when the transducer reports a
temperature that is 2°F (1.1°C) above or below the specified temperature.
fish—set an alarm to sound when the unit detects a suspended target of the
specified symbols.
—sounds an alarm for all fish sizes.
—sounds an alarm for medium and large fish only.
—sounds an alarm for large fish only.
Setting the Total Fuel Onboard Alarm
You can configure your chartplotter to sound an alarm when the total amount
of remaining onboard fuel reaches the specified level.
NOTE: To receive fuel-level information, your unit must be connected to an
external fuel sensor, such as the Garmin GFS 10.
To enable the Total Fuel Onboard alarm and set the fuel alarm
level:
1. From the Home screen, select Configure > alarms > fuel > Total
Onboard > On (or Off).
2. If you select On, use the Rocker to indicate the fuel level at which the
alarm should sound.
Configuring My Boat
To configure settings for your boat, from the Home screen, select
Configure > My boat.
Keel Offset—offset the surface reading for the depth of a keel, making it
possible to measure depth from the bottom of the keel instead of from the
transducer location. Enter a positive number to offset for a keel. Enter a
negative number to compensate for a large vessel that may draw several feet of
water.