4. ECHOSOUNDER MODE
4-4
4.5
Suppressing Interference
Interference from other sounders or electrical interference shows itself on the screen
as in the illustration below.
Interference
To remove interference, do the following:
1. Press the
MENU
key to open the menu.
2. Use the
RANGE
control to choose [MENU MODE] at the top of the screen.
3. Use the
GAIN
control to choose [SOUNDER].
4. Use the
RANGE
control to choose [E/S INT REJECT].
5. Use the
GAIN
control to choose [ON]. (If no interference exists, choose [OFF].)
6. Press the
MENU
key to close the menu.
4.6
Suppressing Low Level Noise
Low level noise, often caused by sediments in water, is painted on the screen as a
large number of light-blue dots. These echoes may be suppressed as below.
Clutter
1. Press the
MENU
key to open the menu.
2. Use the
RANGE
control to choose [MENU MODE] at the top of the screen.
3. Use the
GAIN
control to choose [SOUNDER].
4. Use the
RANGE
control to choose [CLUTTER].
5. Use the
GAIN
control to choose setting. (The setting range is 0.0-10.0 and the
higher the number the stronger the echo that will be erased.)
6. Press the
MENU
key to close the menu.
Interference from
other sounders
Inteference from
electrical equipment
Summary of Contents for CHS-5LMARK-2-55
Page 8: ...TABLE OF CONTENTS vi APPENDIX 1 MENU TREE AP 1 SPECIFICATIONS SP 1 INDEX IN 1 ...
Page 12: ...SYSTEM CONFIGURATION x This page is intentionally left blank ...
Page 30: ...1 OPERATIONAL OVERVIEW 1 18 This page is intentionally left blank ...
Page 38: ...2 FINE TUNING THE SONAR PICTURE 2 8 This page is intentionally left blank ...
Page 54: ...4 ECHOSOUNDER MODE 4 6 This page is intentionally left blank ...
Page 70: ...7 MARKS AND SYSTEM MENUS 7 6 This page is intentionally left blank ...
Page 82: ...8 MAINTENANCE TROUBLESHOOTING 8 12 This page is intentionally left blank ...