Users Manual Part 5

3. TARGET TRACKING (TT)
3-22
3.13.2 How to acknowledge the TT collision alarm
Press the ALARM ACK (RCU-014) or ALERT ACK (RCU-031) key on the control
unit, or select the [ALERT] box with the trackball then left-click to acknowledge the
alarm and silence the buzzer. The alert "TT DANGER OF COLLISION" remains in the
Alert Box until the dangerous situation is gone or you intentionally terminate target
tracking. The symbol and vector stop flashing and are displayed in a solid red color.
Note that when the "TT DANGER OF COLLISION" alarm is generated the AIS display
is automatically turned on.
3.14 Acquisition Zone
The acquisition zone functions both to alert you targets in a specific area and acts as
an automatic acquisition area when automatic target acquisition is active. Any targets
entering the zone will be automatically acquired.
When a target enters an acquisition zone, the buzzer sounds and the indication "TT
NEW TARGET" (or "AIS NEW TARGET") appears (in yellow-orange) in the Alert Box.
The symbol of the offending target is red and flashing. Further, the AIS display is au-
tomatically turned on if it is off.
There are two types of acquisition zones available, arc and polygon, however, AZ1
can only be set as an arc.
3.14.1 How to enable the acquisition zones
1. Open the menu.
2. Select [5 TT•AIS].
3. Select [2 ACQUISITION ZONE].
4. Select [2 AZ/ALR SELECT].
5. Select [ACQUISITION ZONE].
The [ACQUISITION ZONE] box title changes to read "AZ".
6. Close the menu.
AZ target settings
AZ zone settings
Title bar shows “AZ” when
[
ACQUISITION ZONE
]
is selected.