2. HORIZONTAL MODE
2-6
Automatic tilt angle (narrow) with
AUTO TILT
key
Automatic tilt angle (wide) with
AUTO TILT
key
For example, when the
RANGE
control,
TILT
control and
AUTO TILT
key are set to
800 m, 8° and width (1) respectively, the tilt angle changes at each transmission as
follows: 8°
→
9°
→
8°
→
7°
→
8°.
Note 1:
The
AUTO TILT
key is inoperative when the target lock function is active or
is made active. Auto tilt is available when the target lock is OFF.
Note 2:
If the picture set with auto tilt is not visible, disable auto tilt and try again.
2.4.3
Relation between bottom echo and tilt angle
The figure below illustrates how two schools of fish "a" and "b" are displayed on the
screen using three different tilt angles.
Case 1: Tilt angle 30° to 40°
: This tilt angle will display the entire bottom since it is
captured by the full width of the beam. The school of fish is obscured by the bottom.
Case 2: Tilt angle 10° to 20°
: This tilt angle will only display half the bottom since it
is captured by only the lower half of the beam. The school of fish is located above the
bottom.
Case 3: Tilt angle 0° to 5°
: This tilt angle may or may not capture the bottom since
the returning bottom echo is weak. The school of fish is located close to the bottom.
Range (m)
Width 1
Width2
Width3
Period
60, 100
150, 200
300, 400
500, 600
800
1000
Over 1200
±4°*
±2°
±1°
±1°
±1°
±1°
±1°
±6°*
±4°
±2°
±2°
±2°
±2°
±2°
±8°*
±6°*
±4°*
±3°
±3°
±3°
±3°
Period: One transmission
Note
: Tilt angle changes in 2° in-
crements for asterisk-marked
width; 1° increments for all other
widths.
Range (m)
Width 1
Width2
Width3
Period
60, 100, 150
200
300, 400
500, 600
800
1000
Over 1200
±10°
±10°
±10°
±8°
±6°
±4°
±2°
±16°
±16°
±16°
±16°
±12°
±8°
±4°
±20°
±20°
±20°
±20°
±16°
±12°
±6°
Period: One transmission
Set tilt angle
Summary of Contents for FSV-2S
Page 1: ...COLOR SCANNING SONAR FSV 25 FSV 25S OPERATOR S MANUAL www furuno com Model ...
Page 14: ...SYSTEM CONFIGURATION xii This page is intentionally left blank ...
Page 74: ...2 HORIZONTAL MODE 2 44 This page is intentionally left blank ...
Page 92: ...4 NUMERIC GRAPHIC DATA DISPLAY 4 4 This page is intentionally left blank ...