3. ARP OPERATION
3-9
3.10 Proximity Alarm
The proximity alarm alerts you when an ARP target (or AIS target) is within the range you specify,
by the audio alarm and flashing the offending target.
1. Press the MENU key to open the menu.
2. Choose Target and press the ENTER key.
3. Choose Proximity Alarm and press the ENTER key.
4. Choose appropriate range and press the ENTER key.
5. Press the MENU key to close the menu.
When an ARP target comes within the range set here its symbol becomes a flashing triangle
and the audio alarm sounds. Press the CANCEL/HL OFF key to silence the audio alarm. The
flashing continues until the target is no longer within the range set, the alarm range is changed
to exclude the offending target or the proximity alarm is disabled.
3.11 Lost Target
When the system detects a lost target, the audio alarm sounds, the target symbol becomes a
flashing diamond and tracking is discontinued after one minute.
Lost target mark
Canceling a lost target
Place the cursor on the target and press the CANCEL/HL OFF key. The audio alarm sounds and
the target symbol (and its data if displayed) is erased.
Off
0.5nm
1nm
2nm
3nm
5nm
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12nm
24nm
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