4. Operation 
4-35 
 
  Alert Display   
When an alert occurs, the alert message and icon are displayed at the top of the screen. After that, JFE-400/700 
Echo Sounder can be operated by touching the screen as shown in the figure below. 
 
● Alert Massage (ex; Depth Lost) 
 
● Alert Detail (ex; Depth Alert) 
● Alert Status 
  On the Alert Detail screen, an acronym is added after alert priority to indicate alert status. The meaning of the 
acronym is as follows. 
-A: Active Acknowledged 
-V: Active Unacknowledged 
-O: Responsibility Transferred 
-S: Silence 
-N: Normal 
-U: Rectified Unacknowledged