Garmin 340c Manual

A SERVICE OF

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Fishnder 340C Owner’s Manual 3

usIng the fIshfInder 340c > usIng the AdjustMent Menu

To change an Adjustment Menu setting:

1. Press ADJ/MENU.Alistofalloptionsandtheircurrent

settingsappears.TheAdjustmentMenuautomatically

disappearswhenidlefor20seconds,oryoucanpress

ADJ/MENU to exit.

2. Press the ROCKER to select the option that you want to

change,andthenpressENTER to show the settings. The

currentsettingishighlightedinyellow.

3. Press the ROCKER to select a new setting.

4. Press ENTERtoacceptthenewsettingandreturntothe

Sonar Page.

The current adjustment option appears in the upper-left corner

of the screen. For fast adjustment from a Sonar Page, press left

or right on the  to scroll through the options. Press up

or down on the  to change the current setting, or press

 to review the setting before you make changes.

Available adjustments are:

•

Range—sets the screen depth range used for viewing. Auto

(recommended) automatically tracks the bottom, or you can

set a specic depth range (making sure the range includes the

bottom of the water).

•

controls the sensitivity of the Fishnder’s sonar

receiver. Auto (default) is the recommended setting. It

automatically sets the sonar sensitivity. You can also set the

gain manually. To see more detail on the screen, increase the

receiver sensitivity by selecting a higher gain. If there is too

much detail or if the screen is cluttered, lower the sensitivity

(lower the gain) to increase the clarity of the screen. If

Frequency is set to , you can set the Gain separately for

each frequency (50 kHz and 200 kHz).

• —controls what colors are applied to the objects

on the screen. Auto (default) is the recommended setting.

It automatically sets the colors, based on your Auto Color

Gain setting. You can also set the Color Gain manually.

If Frequency is set to , you can set the Color Gain

separately for each frequency (50 kHz and 200 kHz).

• 

—only appears when using a dual beam transducer.

This controls the angle of the transducer beam. Wide beam

allows you to see more sh in shallow water, even off the

sides of the boat. You can also choose (default)

beam.

•

can make it easier to identify the hardness of the

bottom (hard or soft). This setting adjusts a brightly-colored

highlight of the strongest signal area of the bottom.