Displaying Past Positions Of Ais Targets - Furuno NAVNET GD-1920C Operator's Manual

5. AIS OPERATION

5.11 Displaying Past Positions of AIS Targets

You can display time-spaced dots (maximum ten dots) marking the past positions of any
AIS 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
To turn the AIS past position display on or off:
1. Press the MENU key to display the main menu.
2. Press the SYSTEM CONFIGURATION soft key.
3. Press the GENERAL SETUP soft key.
4. Press the AIS OPTION soft key to show the AIS OPTION menu.
5. Choose HISTORY INTERVAL and then press the EDIT soft key.
HISTORY INTERVAL
▲
OFF
30 seconds
1 minute
3 minutes
6 minutes
▼
History interval window
6. 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.
7. Press the ENTER soft key.
8. Press the MENU key to close the menu.
5-8
(b) Ship running
straight
AIS past position displays
(c) Ship reduced
speed
(d) Ship increased
speed