Operation Manual

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5-22
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 If the radar tuning, gain, sea clutter suppression and rain/snow clutter suppression
are not appropriate, the lost target alarm may be generated frequently, so that
adjustments should be made carefully.
Lost Target Alarm [LOST TARGET]･･････････････････････････
When it is impossible to continue tracking any acquired and tracked target, the LOST target
alarm will be generated. The typical causes for this alarm are shown below, but they are
not limited to these:
• The target echo is very weak;
• The target has entered the shadow of land or a large ship and its echo is not being
received;
• The target echo is hidden by sea clutter.
Lost Target Alarm
Status
Symbol on
CRT
Alarm
characters
Alarm sound Conditions
Lost target LOST Beep sound (pee)
Acknowledgeable
The alarm will sound once
when a lost target symbol is
displayed.
Lost target
Attention