Furuno Ls4100 User Manual download pdf (Page 13)

7

1000ft

600ft

400ft

200ft

120ft

60ft

30ft

15ft

Basic ranges (default)

3. Press the [MENU/ESC] key to close

the window.

Shifting the range

The basic range may be shifted up or

down in the manual mode as follows:

Display

Window can be

shifted up and

down to select

the depth.

Range and display shift concept

1. Press the [MENU/ESC] key to open

the main menu.

2. Choose SHIFT from page 1 of the

menu.

3. Press ► to open the shift options

window.

0ft

Shift window

4. Use ▲ or ▼ to choose amount of

shift desired.

5. Press the [MENU/ESC] key to close

the window.

Note: The picture may not be displayed

if the amount of shift is greater than

actual depth.

Adjusting the gain

The [GAIN] key adjusts the sensitivity of

the receiver. Generally, use a higher

gain setting for greater depths and a

lower setting for shallower waters.

Use the proper gain setting.

Incorrect gain may produce wrong depth

indication, possibly resulting in a dangerous

situation.

CAUTION

Gain too high Gain proper Gain too low

Examples of proper and improper gain

1. Press the [GAIN] key and the display

shown below appears.

Min Max

50k 3

200k 2

GAIN

Gain adjustment window

2. When using the dual frequency

display, press ▲ or ▼ to choose

frequency.

3. Press the [GAIN] key to set. (You

may also use ◄ or ►.) Adjust so that

a slight amount of noise remains on

the screen.

4. Press the [MENU/ESC] key to close

the gain adjustment window.

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