Furuno CH-250 - Manual (Page 23)

2-5
2.5 Selecting Train Center
The [TRAIN] control selects the center direction of the detection range. The range of adjustment
is 0
°
to 354
°
in increments of 6
°
. The selected bearing is shown with a filled circle, the train
indicator, on the bearing scale.
0˚ (360˚)
→
6˚
→
12˚
→
18˚
→ ...
354˚
Train indicator
Sector
Figure 2-6 Train center
2.6 Selecting the Tilt Angle
The tilt angle shown the direction to which the
sound wave is emitted. When the sound
wave is emitted horizontally, the tilt angle is
said to be 0
°
and when emitted vertically, 90
°
.
To set a tilt angle, operate the [TILT] control.
Watch the tilt angle indication and tilt angle
indicator at the top right corner of the screen.
The tilt angle can be set in increments of 1
°
from 0
°
to +5
°
(upward) to 0
°
to 90
°
(downward).
Select tilt angle depending on target fish. For
surface fish select a narrow angle (about 5
°
)
and for bottom fish, a wide angle (about 40
°
).
+5˚
0˚ Horizontal direction
Transducer
Sounding beam
90
°
Vertical direction
Tilt angle setting range