Furuno FR-1710 - Manual (Page 37)

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4. Press the [ENTER/SELECT] key to con-
firm your selection, then the [MENU] key
to close the menu.
Trail gradation
Target trails may be shown in monotone or
multitone. Gradual shading paints the trails
getting thinner with time just like the after-
glow on an analog PPI radar.
Monotone
(Single)
Gradual shading
(Multi)
Figure 1-31 Monotone and multitone
target trails
1. Press the [MENU] key.
2. Press the [2] key twice to select TGT
TRAIL.
1. TIME 15S 30S 1M 3M
6M 15M 30M CONT
2. MODE REL TRUE
3. SHADE MONO MULTI
4. LEVEL 1 2 3
5. TRAIL COPY OFF ON
6. THIN TRAIL OFF ON
7. THIN MODE 1 2 3 4
TGT TRAIL
Figure 1-32 TGT TRAIL menu
3. Press the [3] key to select MONO or
MULTI from the SHADE field as appro-
priate.
4. Press the [ENTER/SELECT] key and the
[MENU] key in order.
Displaying, erasing target trails
Press the [TGT TRAIL] key to activate or de-
activate the target trails feature. The current
target trail setting is displayed at the upper
right-and corner of the screen.
To remove trails from the screen, press the
[TGT TRAIL] with a hit-and-release action.
(Trailing continues off screen with target trail
timer counting). Press the key again to
redisplay the trails.
Selecting trail time
1. Press the [MENU] key.
2. Press the [2] key twice to select TGT
TRAIL.
1. TIME 15S 30S 1M 3M
6M 15M 30M CONT
2. MODE REL TRUE
3. SHADE MONO MULTI
4. LEVEL 1 2 3
5. TRAIL COPY OFF ON
6. THIN TRAIL OFF ON
7. THIN MODE 1 2 3 4
TGT TRAIL
Figure 1-33 TGT TRAIL menu
3. Press the [1] key to select time desired
from the TIME field.
4. Press the [ENTER/SELECT] key and the
[MENU] key in order.
Restoring trails
Trails are cancelled and restarted whenever
the range is changed. However, you can con-
tinue trails on the same range, without re-
starting, when the range is changed to a next
larger or smaller range scale. Note however
that when the range is changed, only those
target trails within the previous range are
continued; no trails are generated for targets
outside of the previous range.
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(a) Previous range (b) New range
No trail generated
for target not within
previous range
Figure 1-34 How trail copy works
1. Press the [MENU] key.
2. Press the [2] key twice to select TGT
TRAIL.