User's Manual

5-13
z 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. )
5.1.5 Setting Collision Decision Criteria
(Not used on the JPL-600-MK2 for VTS)
Input of CPA Limit
Procedures 1 Move the cursor to the CPA limit setting (TT/AIS information ③ on page
2-23), and press the [ENT] key.
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.
Input of TCPA Limit
Procedures 1 Move the cursor to the TCPA limit setting (TT/AIS information ④ on page
2-23), and press the [ENT] key.
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.
5.1.6 Setting 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 Move the cursor to the CPA ring display On / Off (lower right of the
display ⑦ on page 2-21), and press the [ENT] key.
The CPA ring will be displayed.
Note:
The CPA ring is not displayed when the true vector mode is selected.
Attention