4. AIS OPERATION
4-17
4.11.2 How to select the number of past position points to be dis-
played
1. Open the menu.
2. Select [5 TT•AIS].
3. Select [4 TT•AIS SYMBOL].
4. Select [5 TT•AIS PAST POSN POINTS].
5. Select [5] or [10] as appropriate.
6. Close the menu.
4.11.3 Past position display orientation
Past position orientation, true or relative, is controlled with [TRAIL MODE] in the
[TRAIL] context menu. To adjust the trail orientation, see section 1.37.1.
4.11.4 Stabilization in true motion
True motion past position display can be ground stabilized or sea stabilized. The
[TRAIL] box shows current stabilization as "TRUE-G" or "TRUE-S". To change stabi-
lization mode, do the following procedure.
Using the on-screen box
Click the stabilization mode button to toggle the mode (BT
(ground stabilization) or WT (see stabilization)).
Using the menu
1. Open the menu.
2. Select [7 INFORMATION BOX].
3. Select [2 OWN SHIP INFO].
4. Select [3 SPEED]. The [SPEED] menu appears.
Note: You can also right-click the [SPD ] indication to access this menu.
5. Select [2 SHIP SPEED].
6. Select [LOG(BT)] (ground stabilization) or [LOG(WT)] (sea stabilization) as re-
quired.
7. Close the menu.
Stabilization mode button
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