Furuno FR-2125V - Manual (Page 40)

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1.25.1 Plotting a target
To perform electronic plotting:
1. Place the cursor(+) on a target of interest by operating the trackball.
2. Press the [ACQ] key and one of numeric keys, and the plot symbol with number ap-
pears at the cursor position.
3. Watching the EPA time shown at the screen center, wait for at least 30 seconds. Place
the cursor (+) on the target at its new location, press the [ACQ] key, and the same
numeric key for the target.
The plot symbol moves to the new target position and previous position is marked by a
small dot.
4. To acquire other targets, repeat the above steps selecting a different plot number.
Note: If a target once plotted is not plotted again within 10 minutes, the warning “UPDATE
PLOT” will appear in red on the bottom of the screen and the plot symbol of the target
flashes. If you want to continue plotting this target, reacquire it within five minutes. Other-
wise, the target will be regarded as a “lost target” and its plot symbol and target data will
be erased. The larger the plotting interval, the less accurate the plotted target data. Plot-
ting of each target should normally be made every three or six minutes as far as possible.
You can use a Watch Alarm to warn yourself every three or six minutes or whichever you
may set.
Within five seconds, you can cancel a last plot by the [TARGET CANCEL] key and make
a re-entry at a different position. After five seconds, the last entry is processed to produce
a vector.
1.25.2 True or relative vector
Vectors can be displayed relative to own ship’s heading (Relative) or with reference to the
north (True). Press the [VECTOR] key to select the required mode. This feature is avail-
able in all presentation modes (gyrocompass must be working correctly). The current vec-
tor mode is indicated at the screen center.
1.25.3 Vector time
Vector time (or the length of vectors) can be set to 30 seconds, 1, 2, 3, 6, 12, 15 or 30
minutes and the selected vector time is indicated at the screen center.
1. Press the [PLOT MENU] key followed by the [1] key several times to select vector time
desired.
[EPA]
1 VECTOR TIME
30SEC/1/2/3/6/12/15/30MIN
2 COLLISION ALARM OFF/ON
CPA 0.0 SM
TCPA 00.0 MIN
3 MARK STD/LARGE
4 PLOT NO. OFF/ON
Figure 1-31 EPA menu