JRC JMA-5212-4/6 User Manual page 132

SHORT mode:
MID mode:
LONG mode:
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
A trail length can also be changed by using the multi-function control. (Refer to Section 3.5.18
"Operate Multi-Function Control [MULTI].")
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.
If the transmit time is short, the indicated trails duration may not have achieved the specified time. The
radar trails remaining time is indicated at the right of the trails length setting.
* Software button
change trail length.
Erasing Trails Data
Procedure 1
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.
True motion trails:
15 sec, 30 sec, 1 min, 3 min, 6 min, 10 min, 15 min, and CONT
30 sec, 1 min, 3 min, 6 min, 10 min, 15 min, 30 min, and CONT
1 min, 3 min, 6 min, 10 min, 15 min, 30 min, 60 min, and CONT
CONT
located at the other ship's information area in Section 2.3.6 is also available to
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.
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.
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
Trails
Ship
True Motion Trails
Trails
Relative Motion Trails
3 53
Land
Ship