JRC JMA-9172-SA - Setting Collision Decision Criteria

JMA-9172-SA Instruction Manual > 5.OPERATION OF TARGET TRACKING AND AIS > 5.1 PREPARATION
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5.1.5 Setting Collision Decision Criteria
5.1.5.1 Input of CPA Limit
Procedures
1) Left-click the CPA limit setting button in the Target Information
located at the upper right of the display.
The CPA Limit value input screen will appear.
2) Enter the value to be set as a CPA limit.
For inputs to the value input screen, refer to Section 3.3.4 "Operation on Numeric Value,
Latitude / Longitude and Character Input menu".
5.1.5.2 Input of TCPA Limit
Procedures
1) Left-click the TCPA limit setting button in the Target Information
located at the upper right of the display.
The TCPA Limit value input screen will appear.
2) Enter the value to be set as a TCPA limit.
For inputs to the value input screen, refer to Section 3.3.4 "Operation on Numeric Value,
Latitude / Longitude and Character Input menu".
5.1.5.3 Setting CPA Ring (CPA Ring)
While the distance of the specified CPA Limit value is used as the radius, the CPA
ring is displayed with a red circle.
Procedures
1) Left-click the CPA Ring button located at the lower right of the
display.
The CPA ring will be displayed.
• Set the optimum values of collision decision
conditions, depending upon vessel type, water area,
weather and oceanographic conditions. (For the
relations between those conditions and alarms, refer
to Section 5.5 "ALARM DISPLAY". )
NOTE:
The CPA ring is not displayed when the true vector mode is
selected.
Attention