Chapter 2  OPERATIONS 
2.7  SOFT KEY OPERATION 
2-27 
2 
INSTRUCTION MANUAL 
1  Select    Vector Length    on the soft key menu. 
 
 
The soft key menu disappears and "Vector Length" of the soft key display is 
color-inverted. 
"Vector Length" is activated. 
2  Operate with the soft keys. 
Soft key 1:   True    Relative  
Switches between true vector mode and relative vector mode. 
Soft key 2: Not available 
Soft key 3: Not available 
Soft key 4:   Vector Length  
When "Vector Length" of the soft key menu is selected, "Vector Length" of the 
soft key display is color-inverted. 
Vector time can be set in minutes in the range 1 to 60 min. 
Turn the [MULTI] control to set the vector length. 
 
Reference: 
When "Vector Length" is not selected on the soft key menu, press the soft key 4 to activate 
the Vector Length function. 
 
 Vector display 
 
 
 
 
Note: 
 
 When a target or own ship changes its course, or when a new target is 
acquired, its vector may not reach a given level of accuracy until three minutes 
or more has passed after such course change or target acquisition. 
Even if three minutes or more has passed, the vector may include an error 
depending upon the. tracking conditions. 
 
Select "Vector Length" and press the control.