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

3. ARP OPERATION

3.9CPA/TCPA Alarm

When the predicted CPA of any ARP target or AIS target becomes smaller than the preset CPA alarm range and its predicted TCPA less than the preset TCPA alarm limit, the audio alarm sounds and the target plot symbol of the offending target changes to a triangle and flashes together with its vector. You may silence the audio alarm with the CANCEL/HL OFF key. The flashing of the triangle plot stops when the vessel’s CPA and TCPA are out of the CPA and TCPA alarm setting. The ARP continuously monitors the predicted range at the Closest Point of Approach (CPA) and predicted time to CPA (TCPA) of each track to own ship.

This feature helps alert you to targets which may be on a collision course with own ship. However, it is important that GAIN, A/C SEA, A/C RAIN and other radar controls are properly adjusted and the ARP is set up so that it can track targets effectively.

CAUTION

The CPA/TCPA alarm should never be relied upon as the sole means for detect- ing the risk of collision. The navigator is not relieved of the responsibility to keep visual lookout for avoiding collisions, whether or not the radar or other plotting aid is in use.

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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