3─44
3
3.5 BASIC OPERATIONS
y
y y
SHORT mode: 15 sec, 30 sec, 1 min, 3 min, 6 min, 10 min, 15 min, and CONT
MID mode: 30 sec, 1 min, 3 min, 6 min, 10 min, 15 min, 30 min, and CONT
LONG mode: 1 min, 3 min, 6 min, 10 min, 15 min, 30 min, 60 min, and CONT
SUPER LONG mode: 30 min, 1 hr, 2 hr, 3 hr, 4 hr, 5 hr, 6 hr, 7 hr, 8 hr, 9 hr, 10 hr, 11 hr, 12 hr and
CONT
A trail length can also be changed by using the multi-function control. (Refer to page 3-55.)
Stored trails cannot be erased even when the trail lengths are changed by using [TRAILS] key. Even
after the trails display is turned off, the past trails can be displayed traced back by setting a desired time.
The system is plotting trails even while the trails display is off.
* Button
16
on the radar display on page 2-7 is also available to change trail length.
Erasing Trails Data
Procedures 1 Hold down [TRAILS] key for 5 seconds.
All the stored trails data will be erased. The system starts plotting trails in initial state.
When [TRAILS] key is pushed for 2 seconds, a RADAR Trails Setting menu will be
displayed. Furthermore, data will be erased if it continues pushing.
Trails Motion Mode
There are two types of trails: relative motion trails and true motion trails.
Relative motion trails: The system plots the trails of a target at a position relative to the own ship.
The operator can easily judge whether the target is approaching the own
ship.
While the own ship is moving, the system also plots the trails of land and
other fixed targets.
True motion trails: The system plots the absolute motion trails of a target, irrespective of the
own ship’s position.
The operator can easily judge the course and speed of the target.
The system does not plot the trails of land and other fixed targets.
Land
Ship
Trails
Land
Ship
Trails
True Motion Trails
Relative Motion Trails
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