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Table 5.1 Deflnitions of Svmbols
Vector/Symbol Definition
Remarks
Tracked target
Dangerous target
(cPA/TCPA)
Alarm
characters
(GPA/TCPA)
appear
and an alarm
sounds. The
vector
and
symbol blink.
t--'---:
!:
i..._..__.;
Initial acquisition
mark
Displayed
after a target is acquired and
uniil its vector
is displayed.
tr
Target with its data
indicated
When
designating
a target's data
indication
with the trackball, the target's
symbol is changed
into
tr
and the
target's lD
is indicated. However, in
case of a lost
target or a dangerous
target, its
corresponding symbol
is
displayed
instead of
n.
+
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.
V
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.
5-17
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