Selecting Train Center; Selecting The Tilt Angle - Furuno CH-250 Operator's Manual

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.
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 ).
0˚ (360˚) 6˚ 12˚
Figure 2-6 Train center
Sounding beam
18˚ 354˚
Train indicator
Sector
Transducer
90 Vertical direction
+5˚
0˚ Horizontal direction
Tilt angle setting range
2-5