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2. VIDEO PLOTTER
2-9
2.4.2 Recording other ship’s track
When your radar has ARPA function, tracks of 10 targets (other ships) can be
recorded. Memory capacity for other ship’s track is 6,000 points, but this value is
divided equally among ten targets, so there are 600 points per target. When a
track memory becomes full the oldest track is deleted to make room for the
latest.
The relation between the own ship track and other ship’s track plotting intervals
and storage time is shown in the table below.
Other target plot interval and storage time
Plotting interval Storage time Plotting interval Storage time
10 sec 100 min 2 min 20 hrs
30 sec 5 hrs 3 min 30 hrs
1 min 10 hrs 6 min 60 hrs
1. Press the [NAV MENU], [5] key in order to show OWN SHIP PLOT, TARGET
PLOT menu.
2. Press the [5] key several times to select OFF at TARGET PLOT (item 5) field.
3. Press the [ENTER] key.
4. Press the [NAV MENU] key to close the menu.
2.4.3 Smoothing
Even when the vessel is sailing in a straight line the track shown on the display
looks irregular. This is due to signal variation of the external navigator. You can
compensate for this irregularity with smoothing.
A smoothing factor between 1 and 9 is available. OFF provides no smoothing. In
most cares a smoothing setting between 1 and 5 is satisfactory.
1. Press the [NAV MENU], [5] key in order to show OWN SHIP PLOT, TARGET
PLOT menu.
2. Press the [8] key several times to select the setting desired.
3. Press the [ENTER] key.
4. Press the [NAV MENU] key to close the menu.