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3.3  Operation Procedures
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3.3.5   Basic Menu Operation 
 
 
To open the menu: 
 
By left-clicking the    Main    button located at the lower right of the radar display, the main menu 
will open. 
By left-clicking the buttons,    TT ,    AIS , and    AZ , adjacent to    Main , each function's exclusive 
menu will open. 
For the arrangement of software buttons, see Section “2.3 FUNCTIONS OF SOFTWARE 
BUTTONS”. 
 
 
To close the menu: 
 
By left-clicking the    Target    button, the menu will close and the target data display screen will 
appear. 
Alternatively, left-click    Exit    located at the bottom of the menu until the menu will close. 
 
 
To move to a lower level of the menu: 
 
The menu is in hierarchical structure. By left-clicking the software button for a desired menu item, it 
is possible to move to the lower level of the menu. Alternatively, Press numeric keys corresponding to 
the desired menu item number, and the        mark will appear at the right end of a menu item having a 
lower level. 
 
 
To move to a higher level of the menu: 
 
By left-clicking    Exit    at the bottom of the menu while the menu is open, it is possible to return to 
the upper level of the menu.