31
ATA OPERATION
6
■
ATA (Automatic Tracking Aid)
By automatically tracking the target chosen with the cursor key, the closest point of approach (CPA) and the time
to closest point of approach (TCPA) limit of your vessel and a target are calculated.
ATA function is designed to sound an alarm when the CPA and TCPA fall below a set value (the approach watch
area).
Only targets in the 0.25 to 16 NM range that are displayed with a high luminosity (strong return signal) can be
selected as ATA targets.
• A maximum of 10 targets can be plotted on the screen.
• Plot positions are identified by an approved symbol mark (p. 33) and associated plot number.
• The target and vector line will move across the screen at the rate and direction defined by the calculated true
or relative course and speed.
• The vector line is displayed on the target.
■
The ATA function ON or OFF
q
Push [MENU]/[
] to enter the Menu screen.
w
Push [
t
] or [
u
] to select the ATA menu.
e
Push [
p
] or [
q
] to select the “Function” item.
r
Push [ENTER]/[
] to enter the option selection
mode.
t
Push [
p
] or [
q
] to select “ON” or “OFF” to turn the
ATA function ON or OFF.
y
Push [ENTER]/[
] to save the setting.
u
Push [MENU]/[
] to exit the Menu screen.
(MENU > ATA >
Function
)
■
ATA settings
Set the menu items before using the ATA function.
q
Push [MENU]/[
], and then push [
t
] or [
u
] to
select the ATA menu.
w
Push [
p
] or [
q
] to select the item.
e
Push [ENTER]/[
] to enter the option selection
mode.
r
Push [
p
] or [
q
] to select an option.
t
Push [ENTER]/[
] to save the setting.
y
Push [MENU]/[
] to exit the Menu screen.
D
Track
The plot displays the target’s past positions as 5 dots,
during each specified tracking interval.
You can specify the track interval in the “Track Interval”
item of the Target menu.
• OFF: Turns OFF the Track display function.
• ON: Turns ON the Track display function.
D
No. Display
Selects the target identification number type that is
displayed at the right side of the mark.
• OFF: Does not display any mark number.
• Select: Displays only the selected mark number.
• All:
Displays all mark numbers.
(MENU >
ATA
>)
