4.6.5
How to calibrate the
bottom
echo
If schools of fish or a fish reef are detected and displayed as the bottom echo, adjust
the strength of the bottom echo as shown below to correctly identify the bottom
echo.
Touch control:
1. Press the
MENU/ESC
key to open [Menu].
2. Tap [3D HIST.].
3.
Tap [Bottom Echo Calib.]. Drag the slider bar which appears below menu or tap
[+] or [-] to adjust the value. (Setting range: -15 to 15)
Larger number helps distinguish bottom fish from the bottom echo; however, it
becomes difficult to distinguish a fish bed. Smaller number helps distinguish a
fish bed; however, it becomes difficult to distinguish bottom fish from the bottom
echo.
4. Tap [×] on the title bar to close [MENU].
Key control:
1. Press the
MENU/ESC
key to open [Menu].
2. Select [3D HIST.] with the arrow keys, then press the
ENTER
key.
3. Select [Bottom Echo Calib.] with the arrow keys, then press the
ENTER
key.
4. Tap [Bottom Echo Calib.]. Drag the slider bar which appears below menu or tap
[+] or [-] to adjust the value. (Setting range: -15 to 15)
Larger number helps distinguish bottom fish from the bottom echo; however, it
becomes difficult to distinguish a fish bed. Smaller number helps distinguish a
fish bed; however, it becomes difficult to distinguish bottom fish from the bottom
echo.
5. Press the
MENU/ESC
key to close [Menu].
4-28
CHAPTER 4
MULTI-BEAM SONAR DFF-3D
4
.
MULTI BEAM SONAR DFF-3D
