7.3  Adjustment
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[III] Gate Size Adjustment (Gate Size) 
 
Use the target tracking function (TT) to set a target search area. 
The gate size is adjusted to an optimal value, so do not change it carelessly. 
 
 
  Procedures    1.  Open the Serviceman Menu. 
 
2.  Open the Gate Size menu by performing the following menu 
operation. 
 
        9. SP/TT Initial Setup   
 → 2. TT   
 → 5. Gate Size   
 
3.  Select a gate size. 
 
  Wide    : Large gate size 
  Normal    : Medium gate size 
  Narrow    : Small gate size 
 
 
[IV]  CPA Limit Ring Display On/Off (Limit Ring) 
 
Use the target tracking function (TT) to determine whether to display the CPA limit for determining a 
dangerous ship.    When the CPA limit ring display function is turned on and a relative vector is used, the 
CPA limit ring is displayed as a red circle. 
 
 
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  Procedures    1.  Open the Serviceman Menu. 
 
 
2.  Open the TT (Target Tracking) menu by performing the following menu 
operation. 
 
        9. SP/TT Initial Setup   
 → 2. TT   
 
3.  Press the [6] key. 
 
The Limit Ring item is turned on / off. 
  Off     : Limit ring not displayed 
  On     : Limit ring displayed 
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