Filter
Top Products
5-20
5.14.3 Acknowledging the guard zone alarm
Press the [AUDIO OFF] key to acknowledge and silence the guard zone aural alarm.
5.15 Operational Warnings
There are six main situations which cause the ARPA to trigger visual and aural alarms:
• CPA/TCPA alarm
• Guard zone alarm
• Lost target alarm
• Target full alarm for manual acquisition
• Target full alarm for automatic acquisition
• System failures
5.15.1 CPA/TCPA alarm
Visual and aural alarms are generated when the predicted CPA and TCPA of any target
become less than their preset limits. Press the [AUDIO OFF] key to acknowledge and
silence the CPA/TCPA aural alarm.
5.15.2 Guard zone alarm
Visual and aural alarms are generated when a target transits the operator-set guard zone.
Press the [AUDIO OFF] key to acknowledge and silence the guard zone aural alarm.
(Refer to paragraph 5.14 Setting a Guard Zone for further information.)
5.15.3 Lost target alarm
When the system detects a loss of a tracked target, the target symbol becomes a flashing
diamond mark and the label “LOST” appears at the screen bottom. At the same time, an
aural alarm is produced for one second.
Press the [LOST TARGET] key to acknowledge the lost target alarm. Then, the lost target
mark disappears.
5.15.4 Target full alarm
When the memory becomes full, the memory full status is indicated, the relevant indica-
tion appears on the screen and a short beep sounds.
5.15.5 Manually acquired targets
The indication “MAN TARGET FULL” appears at the screen center and a short beep tone
sounds when the number of manually acquired targets reaches 20 or 30 depending on
whether auto acquisition is activated or not.