Garmin GPSMAP 520s Owner's Manual - Page 48
Setting the Total Fuel Onboard Alarm, Setting System Alarms
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Configuring the Chartplotter Setting System Alarms To set a system alarm from the Home screen, select Configure > Alarms > System. Clock-set an alarm using the system (GPS) clock. The unit must be on for the clock alarm to work. Battery-set an alarm to sound when the battery reaches a specified low voltage. GPS Accuracy-set an alarm to sound when the GPS location accuracy falls outside the specified value. 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 using a Garmin sounder module to configure sonar alarms. 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. 42 GPSMAP 400/500 Series Owner's Manual