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3. TARGET TRACKING (TT)
3-25
3.15 TT System Messages
There are seven main situations that cause the TT to trigger audio and visual
alarms:
• Reference target alarm
• Collision alarm
• Acquisition zone alarm
• Lost target alarm
• Target full alarm for manual acquisition
• Target full alarm for automatic acquisition
• System failure
To acknowledge the audio alarm, press the [ALARM ACK] key, or select the
ALARM ACK box then push the left button.
TT system messages
Message Meaning Action
REF TARGET LOST When the system detects a loss of a
reference target, the target symbol turns
red and flashes. At the same time, an
audio alarm is produced for one second.
The reference target mark disappears from
the screen after the reference target alarm
is acknowledged.
Press the [ALARM ACK]
key or click the ALARM
ACK box to
acknowledge.
TT COLLISION A tracked target is on collision course. Take evasive action or
terminate tracking of TT.
TT NEW TARGET Tracked target has entered an acquisition
zone. The tracked target's symbol is red
and flashing.
Press the [ALARM ACK]
key or click the ALARM
ACK box to
acknowledge.
TT LOST When the system detects a loss of a
tracked target, the lost tracked target
symbol appears in red and flashes. At the
same time, an audio alarm is produced for
one second. The lost target mark
disappears from the screen after the lost
target alarm is acknowledged.
Press the [ALARM ACK]
key or click the ALARM
ACK box to
acknowledge.
TT TARGET 95%
(AUTO) or (MAN)
Appears when capacity for
automatically(manually) tracked targets is
95% full.
TT TARGET FULL
(AUTO) or (MAN)
Appears when capacity for
automatically(manually) acquired targets is
full.
TT SYSTEM ERROR When the TT malfunctions because of
hardware error, the screen shows this
indication.
Press the [ALARM ACK]
key or click the ALARM
ACK box to
acknowledge. Reset
power to restore normal
operation.