Furuno FSV-35S, Operator'S Manual

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3. VERTICAL MODE
3-8
TVG distance and setting
This sonar has three TVG functions, Near, Medium and Far, and they mainly compen-
sate for propagation loss on short, middle and long ranges respectively, centered at
the ranges shown below. The higher the TVG setting the greater the amplification of
echoes.
1. Press the MENU/ESC key to show the main menu.
2. Select [Gain Setting] then push the left-click button.
3. Press the
H/V/S key to select the [V] tab.
4. Select [TVG Distance] then push the left-click button.
5. Select [Changeable] then push the left-click button.
6. Select S or T , for [Near], [Med] or [Far] as appropriate then push the left-click
button to change the setting.
Near: Setting range, 50 to 150 m, 10 m increments. Med: Setting range, 300 to
500 m, 20 m increments Far: Setting range, 600 to 1000 m, 40 m increments
7. Select [Quit] on the setting box then push the left-click button.
Adjust the TVG level for selected TVG distance as below.
8. Select [TVG-Near], [TVG-Med] or [TVG-Far] as appropriate then push the left-
click button.
9. Select S or T as appropriate then push the left-click button to change the setting.
The setting range is -5 to 5. The higher the setting, the higher the gain. For strong
echoes such as sea surface reflections or plankton layer lower the setting by 1 or
2.
10. Select [Quit] on the setting box then push the left-click button to close the box.
11. Long-press the
MENU/ESC key to close all menus.
Approx. 100 m
Near
Far
Med
Approx. 400 m
Approx. 800 m
Current settings
Select item with trackball;
push left-click button to adjust.