Users Manual Part 5

4. AIS OPERATION
4-16
4.9.7 How to show/hide the customized AIS name (C-types only)
You can display a vessel’s name below the corresponding AIS symbol.
1. Open the menu.
2. Select [5 TT•AIS].
3. Select [4 AIS].
4. Select [0 NEXT].
5. Select [6 DISP CUSTMIZED NAME].
6. To show the name, select [ON]. The name set at section 4.9.5 appears below the
icon for the selected vessel.
To hide the name, select [OFF]. Although the customized name is hidden, if the
selected vessel is transmitting the vessel name in the AIS data, the vessel name
received in the AIS data appears below the icon. If the AIS data does not contain
the vessel’s name, the class (A/B/C) appears instead.
7. Close the menu.
4.10 Past Position Display
The past position display shows equally time-spaced dots marking past positions of
activated AIS targets. A new dot is added at preset time intervals until the preset num-
ber is reached. If a target changes its speed, the spacing will be uneven. If it changes
course, its plotted course will not be a straight line.
Below are examples of past position displays.
4.10.1 How to display past position points and select the plotting in-
terval
Select the [PAST POSN] setting, then left-click to cycle through the following settings.
[OFF]  [30sec]  [1min]  [2min]  [3min]  [6min]  [OFF]...
The past positions are displayed in accordance with the selected setting.
Note: The [PAST POSN] setting is hidden when [SIMPLE] display mode is used. To
change the setting in [SIMPLE] mode, first restore [NORMAL] display mode, adjust the
setting, then return to [SIMPLE] mode. See section 1.9 for how to change the display
mode.
(a) Ship turning (b) Ship running straight (c) Ship reduced speed (d) Ship increased speed
OFF
PAST POSN
setting