Furuno CH-270 - Manual (Page 26)

2. HORIZONTAL MODE
2-6
2.6 Choosing the Tilt Angle
2.6.1 Choosing the tilt angle
The tilt angle shows 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 the tilt
angle indicator at the top right corner of the screen. The tilt angle can be set in increments
of 1
°, from +5° (upward) to 90° (downward). Automatic tilt selection is also available. See
AUTO TILT on page 2-24 for details.
Choose the tilt angle depending on target fish. For surface fish choose a small angle
(about 5
°) to minimize sea surface reflections and for bottom fish, a large angle (about
40 °) to search a wide area.
+5 °
0 ° Horizontal direction
Transducer
Soundome
90
° Vertical direction
Tilt angle setting range
Sounding beam and tilt angle