Operation Manual

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5-17
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Table 5.1 Definitions of Symbols
Vector/Symbol
Definition Remarks
Tracked target
Dangerous target
(CPA/TCPA)
Alarm characters (CPA/TCPA) appear and
an alarm sounds. The vector and symbol
blink.
Initial acquisition
mark
Displayed after a target is acquired and until
its vector is displayed.
Target with its data
indicated
WhENTesignating a target’s data indication
with the trackball, the target’s symbol is
changed into □ and the target’s ID is
indicated. However, in case of a lost target
or a dangerous target, its corresponding
symbol is displayed instead of □.
Lost target
(This symbol appears
when a target cannot
be tracked for any
reason.)
Alarm characters (LOST) appear and an
alarm sounds. No vector is displayed, but
the symbol blinks.
Target that has entered
the guard zone
Alarm characters (GZ) appear and an alarm
sounds.
The symbol blinks.
Trackball cross cursor
This cursor is used to select a target when
acquiring manually, canceling targets and
for setting numerical data.
Post positions of
targets
The symbols and vectors are only displayed
when [PAST POSN] is ON.
The position interval can be set to 0.5, 1, 2 or
4 minutes.