Furuno FR-8062, FR-8252, FR-8122 manual 12 CPA/TCPA Alarm

4. AIS OPERATION

4.12CPA/TCPA Alarm

When the predicted CPA of any AIS target or ARP target becomes smaller than the preset CPA alarm range and its predicted TCPA less than the preset TCPA alarm limit, an audio alarm sounds and the symbol of the offending AIS target changes to the dangerous target symbol.

Triangle is thicker than that of active target

Dangerous target symbol

You may silence the audio alarm with the CANCEL/HL OFF key. The flashing of the symbol stops when the target’s CPA and TCPA become greater than the CPA and TCPA alarm setting. Pre- dicted range at the Closest Point of Approach (CPA) and predicted time to CPA (TCPA) of each AIS target are monitored.

This feature helps alert you to targets which may be on a collision course with own ship.

1.Press the MENU key to open the menu.

2.Choose Target and press the ENTER key.

3.Choose CPA and press the ENTER key.

Off 0.5nm 1nm 2nm 3nm 5nm 6nm

4.Choose appropriate CPA distance and press the ENTER key.

5.Choose TCPA and press the ENTER key.

30sec

1min

2min

3min

4min

5min

6min

12min

6.Choose appropriate TCPA and press the ENTER key.

7.Press the MENU key to close the menu.

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