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6-5
Follow the steps shown below to activate the
auto acquisition area.
1. Open the “ARP-10 MENU.”
2. Select “8. Auto ACQ.”
3. Select “On.”
4. Press the [ACQ/ENTER] key.
5. Press the [MENU] key to close the menu.
Terminating Tracking of Targets
When the Auto Plotter has acquired 10 tar-
gets, no more acquisition occurs unless tar-
gets are lost. Should this happen, cancel
tracking of individual targets or all targets by
the procedure described below.
Individual targets
Place the cursor (+) on a target which you do
not want to be tracked any longer by operat-
ing the omnipad and press and hold down
the [SELECT/CANCEL] key.
All targets
All targets can be canceled from "ARP-10
MENU" at a time.
1. Open the “ARP-10 MENU.”
2. Select “2. All Cancel.”
3. Press the [ACQ/ENTER] key.
6.4 Displaying Target Data
The Auto Plotter calculates motion trends
(range, bearing, course, speed, CPA and
TCPA) of all targets under tracking at the ARP
Data area.
To turn ARP data on;
1. Press the [MENU] key.
2. Select “DISP DATA.”
3. Press the [ACQ/ENTER] key to select the
message for “ARP” or “NAV” or “ARP.”
4. Press the [ACQ/ENTER] key.
5. Press the [MENU] key to close the menu.
CAUTION
CAUTION
At the speed under 5 kts the target data is
displayed with a delay because of
filtration.
Place the cursor on a wanted target and press
the [SELECT/CANCEL] key. Data on the se-
lected target is displayed at the bottom of the
screen. The symbol of the selected target
gets twice as large as the normal circle. The
data includes the following:
RNG/BRG (Range/Bearing): Range and
bearing from own ship to the last-plotted or
selected target position with suffix “T” (True)
or “M” (Magnetic). For true bearings suffix “T”
is used in case of gyrocompass input and suf-
fix “M” is used in case of magnetic compass
input.
COURSE/SPEED (Course/Speed): Course
and speed are displayed for the last-plotted
or selected target with suffix “T” (True) or “M”
(Magnetic). For true bearings suffix “T” is used
in case of gyrocompass input and suffix “M”
is used in case of magnetic compass input.
CPA (Closest Point of Approach): is the
closest range a target will approach to own
ship. Do not mix it with the operator preset
CPA alarm limit.
TCPA: The time to CPA measured with
present speeds of own ship and the targets.
Both CPA and TCPA are automatically cal-
culated. When a target ship has passed clear
of own ship, the CPA is displayed and the
TCPA appears as “**.*”. TCPA is counted up
to 99.9 min. and beyond this it is indicated
as TCPA>99.9 min.