Furuno FR-1710 User Manual download pdf (Page 35)

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2. Press the [2] key twice to select OFF from

the ERASE field.

3. Press the [ENTER/SELECT] key followed

by the [MENU] key.

Setting CPA/TCPA alarm ranges

When the predicted CPA of any target be-

comes smaller than a preset CPA alarm range

and its predicted TCPA less than a preset

TCPA alarm limit, the EPA releases an au-

dible alarm and displays the warning label

COLLISION appears on the screen. In addi-

tion, the EPA symbol changes to a triangle

and flashes together with its vector.

Provided that this feature is used correctly, it

will help prevent the risk of collision by alert-

ing you to threatening targets. It is important

that GAIN, A/C SEA, A/C RAIN and other

radar controls are properly adjusted.

CPA/TCPA alarm ranges must be set up prop-

erly taking into consideration the size, ton-

nage, speed, turning performance and other

characteristics of own ship.

CAUTION

CPA/TCPA Alarm

The CPA/TCPA alarm feature should never

be relied upon as the sole means for detect-

ing the risk of collision.

The navigator is not relieved of the respon-

sibillity to keep visual lookout for avoiding

collisions, whether or not the radar or other

plotting aid is in use.

To set the CPA/TCPA alarm ranges:

1. Press the [MENU] key.

2. Press the [7] key twice to display the

PLOT menu.

1. MARK DISP OFF ON

2. ERASE

3. VEC REF REL TRUE

4. VEC TIME 30S 1M 3M 6M

15M 30M

5. CPA SET OFF 0.5NM 1NM 1.5NM

2NM 3NM 4NM

5NM 6NM

6. TCPA SET 30S 1M 2M 3M

4M 5M 6M 12M 15M

7. TRACK OFF ON

8. AUDIO ALARM OFF ON

9. INTVAL* 30S 1M 2M 3M 6M

0. ↓*

PLOT MENU 1

* Requires ATA Board ARP-17.

Figure 1-27 PLOT menu

3. Press the [5] key for CPA SET or [6] key

for TCPA set.

4. Press the [5] key or [6] key again to se-

lect CPA or TCPA range desired.

5. Press the [ENTER/SELECT] key to reg-

ister your selection.

6. Press the [MENU] key to close the menu.

Silencing CPA/TCPA audible alarm

Press the [AUDIO OFF] key to acknowledge

and silence the CPA/TCPA aural alarm.

The flashing of the triangle plot symbol and

vector remain on the screen until the dan-

gerous situation is gone or you intentionally

terminate tracking of the target by using the

trackball.

Lost target alarm

When the system detects a lost target, track-

ing on the target is discontinued and the tar-

get symbol becomes a flashing diamond. The

normal plotting symbol is restored to the tar-

get when the target is manually acquired. If

not reacquired the flashing diamond is auto-

matically erased. To confirm a lost target,

place the cursor on it and press the [CAN-

CEL/CLEAR] key.

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