Furuno GP-3700F, Operator'S Manual

Page: 171 / 224

11. ECHO SOUNDER
11-23
Usage guidelines
• The bottom discrimination display provides an estimate of seabed composition. Ac-
tual composition may be different.
• This feature requires a bottom discrimination capable transducer. For details, see
“EQUIPMENT LIST” in the installation manual.
• The high and low frequencies are alternately transmitted, regardless of current dis-
play selection. The TX interval is slower when this feature is active.
• Use this feature at 5 to 100 m of depth, 10 knots or less of speed.
• This feature uses the range from the ship’s draft; therefore, enter the ship’s draft.
How to set up bottom discrimination display
Note: Automatic range is automatically turned on when the bottom discrimination dis-
play is activated.
1. Press the MENU key to open the main menu.
2. Select [0. SYSTEM SETTING].
3. Select [8. ECHO SOUNDER INITIAL SETTING].
4. Select [4. BOTTOM DISCRIMINATION SETTING].
5. Select [SEABED COMPOSITION].
6. Select [GRAPHIC], [DETAILS] or [OFF].
[GRAPHIC]: Displays the most probable material on the bottom.
[DETAILS]: Graphically displays the probability of the bottom material in propor-
tion.
[OFF]: Turns off the bottom discrimination feature.
7. Select [BOTTOM LEGEND].
8. Select [SHOW] or [HIDE].
9. Press the
DISP key to close the menu.