Users Manual Part 3

1. OPERATIONAL OVERVIEW
1-81
The reference for the past position displays for AIS and TT is also switched whenever
the trail reference is switched.
1. Open the menu.
2. Select [1 ECHO].
3. Select [0 NEXT] to show the next menu page.
4. Select [4 TRAILS]. The [TRAIL MENU] appears.
Note: You can also right-click the [TRAIL] box to access this menu.
5. Select [TRAIL MODE].
6. Select the appropriate trail mode, then press the ENTER MARK key.
• [REL]: Relative target trails. Targets move relative to own ship and stationary
targets appear smeared.
• [TRUE]: True target trails. Targets true movements are shown, stationary tar-
gets are not smeared.
7. Close the menu.
You can also click the trail mode indication to toggle between relative and true trails.
1.37.2 Trail time
Trail time is the interval at which the trail is plotted on-screen.
Note: If the trail time is linked with the range (see section 1.9), the trail time is also au-
tomatically regulated to show a constant trail. Further, the trail time indication appears in
yellow color. To link the trail time with the range, select
[NORMAL] in the following proce-
dures; range link is not available if a setting other than
[NORMAL] is selected. Also, when
using a range that is valid only when in stand-by mode, the trail time is automatically ad-
justed to match either the maximum or minimum range available in transmit mode.
You can change the trail time as follows:
Using the control unit (RCU-014/RCU-031)
1. Press the CANCEL TRAILS key to cycle through and select the desired setting.
For IMO-types, the cyclic order is as follows:
[OFF]  [15 sec]  [30 sec]  [1 min]  [3 min]  [6min]  [15 min]  [30 min]
 [CONT]  [OFF]...
[
TRAIL
]
box Trail time Trail mode indication
Right-click the
[
TRAIL
]
box to show
the
[
TRAILS
]
menu.