17-7  Section 17 Setting up Alerts 
 
 
 
 
 
17.3.1  Switching AZ1/AZ2 to enable/disable 
 
17.3.1.1  Enabling AZ1 or AZ2 
Select the [Use AZ1] or [Use AZ2] check box.   
A TT target / AIS target in the applicable AZ is automatically acquired / activated and it becomes a 
target of collision detection. 
A "    " mark and identification number are assigned to the acquired TT target on the radar screen, 
which are moved together with the TT target, and then a vector is displayed within 1 min. 
 
17.3.1.2  Disabling AZ1 or AZ2 
Clear the [Use AZ1] or [Use AZ2] check box. 
Acquired and activated zones disappear from the RADAR screen. However, already acquired TT 
targets are continuously tracked. Moreover, activated AIS targets remain activated.