Displaying Past Position (Arp) - Furuno 1823C Operator's Manual

2. RADAR OPERATION
2.26.6

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.
To turn the past position display on or off:
1. Press the [MENU] key followed by the ARP SETUP soft key.
2. Operate the trackball to select HISTORY INTERVAL.
3. Press the EDIT soft key to show the history interval window.
4. Operate the trackball 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.
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Past position displays
HISTORY INTERVAL
¤
OFF
¡
30 seconds
¡
1 minute
¡
3 minutes
¡
6 minutes
History interval window