Garmin gpsmap 278 Manuale Utente

Use the Sonar tab to set up and configure sonar. See the 

information about Sonar setup options.

 

NOTE: You must have a GSD 20 or 21 sounder module 

connected to your GPSMAP 278 to use sonar.

Use the Alarms tab to define alarm settings. When an alarm goes off, 

the alarm message appears on the GPSMAP 278 and the unit emits 

five (5) beeps. 

1.  Highlight the 

Alarms tab on the Main Menu.

2.  Select an alarm to set, and press 

ENTER. 

3.  Change the setting to 

On, and press ENTER. If necessary, 

highlight the next field to the right and press 

ENTER, enter 

the settings you want, 

4.  Press 

ENTER to finish.

When you set a persistent alarm, the alarm message appears on 

the screen and the GPSMAP 278 beeps until you press ENTER to 

acknowledge the alarm. 

M

AIN

 M

ENU

 > 

S

ONAR

 T

AB

 

AND

 A

LARMS

 T

AB