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2. RADAR OPERATION
2-33
2.25.6 Displaying past position (ARP)
This ARP can display time-spaced dots (maximum ten dots) marking the past positions of
any targets being tracked. You can evaluate a target’s actions by the spacing between dots.
Below are examples of dot spacing and target movement.
(a) Ship turning
(b) Ship running
straight
(c) Ship reduced
speed
(d) Ship increased
speed
Past position displays
To turn the past position display on or off:
1. Press the MENU key followed by the ARP SETUP soft key.
2. Operate the Cursor pad to select HISTORY INTERVAL.
3. Press the EDIT soft key to show the history interval window.
HISTORY INTERVAL
▲
▼
OFF
30 seconds
1 minute
3 minutes
6 minutes
History interval window
4. Operate the Cursor pad to select history interval among 30 sec, 1 min, 3 min and 6 min,
or select OFF to turn off the past position display.
5. Press the ENTER soft key.
6. Press the MENU key to close the menu.