Operation Manual

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A-20
APPENDI
X
■Collision Decision Criteria Setting (CPA/TCPA)
The collision decision criteria CPA/TCPA of ARPA target are used for AIS target as well.
1. Left-click MENU on the screen.
MAIN menu opens.
2. Left-click SUB1 MENU → ARPA／AIS.
ARPA menu opens.
3. Set CPA LIMIT (Closest Point of Approach)
(1) Left-click the "1.CPA LIMIT" edit box.
CPA LIMIT will be selected.
The numeric input dialogue box is
opened.
(2) Input the new value by pressing the 0 to 9 number keys or by using the + or -
keys, then press END to input.
4. Set TCPA LIMIT (Time to CPA)
(1) Left-click the "2.TCPA LIMIT" edit box.
TCPA LIMIT will be selected.
The numeric input dialogue box is opened.
(2) Input the new value by pressing the 0 to 9 number keys or by using the + or -
keys, then press "END" to input.
For further details, please refer to Chapter 5 of a JMA-9900 series Instruction Manual.
Operation
procedure
SUB1 MENU
ARPA
TRIAL
AIS SETTING
EXIT
1. CPA LIMIT
2. TCPA LIMIT
1.5
10
3. CPA RING
OFF ON
4.
5. GATE
6.
2. NARROW
0.
1-99min
0.1-99nm
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