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4. Tracked Target (TT) Operation
4-21
4.15 TT Alerts
There are nine situations that cause the TT to trigger visual and audio alarms. To silence the audio alarm, push the
ALARM ACK key, or select the ALARM ACK box then push the left button.
TT alerts
Message no. Message Alert category Description
110 TT dangerous target Alarm A TT is on collision course.
111 TT target in ACQ ZONE Warning TT has entered an acquisition zone. The target's
symbol is red and flashing.
112 TT lost target Warning When the system detects a loss of a TT, a red X is
superimposed on the target symbol and flashes.
At the same time, an audible alarm is produced
for one second. The lost target mark disappears
from the screen after the lost target alarm is
acknowledged.
114 TT AUTO ACQ 100% full Warning Appears when capacity for automatically acquired
targets is full.
115 TT AUTO ACQ 95% full Warning Appears when capacity for automatically TTs is
95% full.
116 TT MAN ACQ 100% full Warning Appears when capacity for manually acquired
targets is full.
117 TT MAN ACQ 95% full Warning Appears when capacity for manually TTs is 95%
full.
118 TT System error Warning When the Main CPU receives no signal input
from TT, the screen shows "TT System error"
with an indication denoting offending equipment,
also releasing an audible alarm.
120 TT lost REF target Warning When the system detects a loss of a reference
target, a red X is superimposed on the target
symbol and flashes. At the same time, an audible
alarm is produced for one second. The reference
target mark disappears from the screen after the
reference target alarm is acknowledged.