11
5. Press the [ENTER/SELECT] key.
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 audible alarm.
The flashing of the triangle plot symbol and
vector remain on the screen until the dan-
gerous situation is no longer present or you
intentionally terminate tracking of the target
by using the [CANCEL/CLEAR] key.
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
target when the target is manually acquired.
If the target is not reacquired the flashing dia-
mond will be erased from the screen.
Confirming lost target
1. Place cursor on target.
2. Press the [CANCEL/CLEAR] key.
Guard zone alarm
When a target comes in the guard zone, the
buzzer sounds and the indication “GUARD
ZONE” appears. The intruding target is de-
noted by an inverted triangle mark. The mark
disappears when the target exits the zone.
You can set the guard zone as follows:
1. Press the [MENU], [7], [7] to display PLOT
MENU 1.
2. Press the [0] key twice.
3. Press the [3] key to select GUARD ZONE.
4. Press the [3] key again to select SET and
press the [ENTER/SELECT] key.
5. Set the cursor on one boundary of the
guard ring and press the [ENTER/SE-
LECT] key. Set the cursor on the other
boundary and press the [ENTER/SE-
LECT] key.
To disable the guard ring, select OFF at step
4 in the above procedure and press the [EN-
TER/SELECT] key.
A
B
0.5 mile
Figure 11 Guard zone
13. Track Test
(Simulation Display)
The simulation display tests the ATA proces-
sor for proper operation. The figure below
shows the starting picture of the simulation
display. Each mark moves as time passes.
Check that each target’s data is reasonable.
Do this test when the radar is not being
used.
6
5
4
3
1
2
7
XX
Figure 12 Track test display
1. Press [MENU], [7], [7], [0], [0], [4], [4].
2. Press the [ENTER/SELECT] key to start
the test.
3. It takes approximately three minutes for
all vectors to be displayed completely on
the screen. The simulation display does
not need radar, gyrocompass nor speed
log input; seven targets on various
courses and speeds are provided.
