Smiths Kelvin Hughes Nucleus 3 5000 Series, Системный справочник

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Plotting Ad di tional Tar gets
9 Up to 20 targets can be plotted on the display at the
same time. When selected and plotted, targets are
allocated a number, in sequential order from 1 to 99. When
99 is reached numbers are allocated on the first free from 1
(refer to PLOT menu for labels on targets). To plot additional
targets first ensure that no other target, map line or symbol
are selected, then proceed as follows:
(1) Position the cursor over the initial target and press
the ACQ (Acquire) pushbutton, a plot symbol [•]
appears over the target position.
(2) Position the cursor over the 2nd target, press the
ACQ (Acquire) pushbutton, a plot symbol [•]
appears over the 2nd target position. Move the
cursor to the next target.
NOTE:
(1) When two or more targets are close to one another,
careful selection of the correct plot is required.
(2) If difficulty is experienced, and the wrong plot is
selected, position the cursor over the symbol for the correct
plot and press the SELECT pushbutton, the symbol/vector
flashes. Now move the cursor over the new position of the
target, press the ACQ (Acquire) pushbutton, the new vector
is now generated.
De leting Plots
10
To delete plots proceed as follows:
(1) Target Plots selected in error may be deselected
provided the ACQ (Acquire) pushbutton has not
been pressed. Press the SELECT pushbutton to
correct the error.
(2) The vector of any one target can be deleted by
positioning the cursor on the vector origin,
pressing the SELECT pushbutton and then
pressing the DELETE pushbutton.
Vec tor Time
11 The default or initial value of vectors is 15 minutes. The
length of the vector is proportional to the speed of the
target, e.g. target speed of 12 knots (KT) = vector length of
three nautical miles.
12
The vector time may be changed between 1 and 30
minutes by selecting the VECTOR function and then
operating the trackerball in the vertical plane to increase or
decrease the time shown next to VECTOR in the pop-down
box.
TARGET DATA
Func tion
13 Data concerning a selected target may be displayed in
the Target Data box. The data for plotted targets using
EPA is as follows:
(1) Target Number (automatically allocated).
(2) Bearing (True or Relative).
(3) Range.
(4) Course & Speed (True).
(5) Closest Point of Approach (CPA) & Time to
Closest Point of Approach (TCPA) or Bow
Crossing Range (BCR) & Bow Crossing Time
(BCT).
14
EPA tracking is available on a radar visible target out
to the maximum range of 96nm.
Se lec tion
15 To display data in the Target Data box:
(1) Position the cursor over the selected target to be
tracked and press the centre pushbutton (Select).
16
The elapsed time is calculated between successive
target returns and a vector generated on the display to
represent the predicted course and speed of the target.
17
Target information appears in the Target Data box as
follows:
TARGET XX Target Number
updated XX.X mins ago Time since last update
T.BEARING 056.0
0
Bearing (T) or (R)
RANGE 3.3 nm Range in nautical miles
T. COURSE 349.0 Course in degrees
T. SPEED 2.7KT Speed in knots (KT)
CPA or BCR 3.2nm Closest Point of Approach
(nautical miles) or Bow
Crossing Range
TCPA or BCT 2.2min Time of Closest Point of
Approach (minutes) or Bow
Crossing Time
18
To delete a target plot, position the cursor close to the
selected target and press the select pushbutton, then
press the delete pushbutton.
KH 2020
Chap 2a
July 03 2a.2 Amdt 5