Furuno csh8l SONAR User Manual


 
1. OPERATIONAL OVERVIEW
1-10
1.4 Setting the Tilt Angle
The tilt angle shows the direction to which the sound wave is emitted. When the sound
wave is emitted horizontally, it is said to be zero (0) degrees and when emitted verti-
cally, 90 degrees.
To set a tilt angle, operate the TILT lever for the desired angle while watching the tilt
angle indication at the top right corner of the sonar display. Each time the lever is op-
erated the newly selected tilt angle is displayed in large characters for five seconds at
the top of the sonar display. The tilt angle can be set in one-degree steps within the
range of 0 to 55 degrees.
1.4.1 Automatic tilt on/off
The automatic tilt feature automatically tilts the transducer within the tilt range selected
on the menu. This feature is useful for finding fish school center.
Automatic tilt becomes inoperative when the target lock feature is made active. Dis-
able the target lock feature to resume automatic tilt.
1. Press the MENU key to open the menu.
2. Operate the RANGE control to choose [MENU MODE] at the top of the screen.
3. Operate the GAIN control to choose [SONAR].
4. Operate the RANGE control to choose [AUTO TILT].
5. Operate the GAIN control to choose [ON].
6. Operate the RANGE control to choose [TILT ANGLE].
7. Use the GAIN control to choose a tilt range among [±2-10°], [±4-14°], [±6-20°],
and [±10-26°]. See the table on the next page for range and tilt angle.
8. Press the MENU key to close the menu. When auto tilt is on, auto tilting begins
with the range selected (at step 7), centered on the tilt angle set with the TILT le-
ver.
To turn off automatic tilt, choose [OFF] at step 5. Note that automatic tilt range varies
with the range in use.
Range and tilt angle
For example, when the RANGE control, TILT lever and automatic tilt are set to 1000
m, 8° and ±2-10° respectively, the tilt angle changes at each transmission as follows:
10°
Range (m) ±2-10° ±4-14° ±6-20° ±10-26°
50, 85, 100, 150, 200, 250, 300, 350
400, 450, 500
600, 800
1000, 1200, 1600
±10°
±8°
±6°
±2°
±14°
±12°
±10°
±14°
±20°
±16°
±14°
±6°
±26°
±20°
±20°
±10°
0° Horizontal direction (tilt: 0)
Tilt angle range
+55°
Transducer