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 ROCKER to scroll through the options. Press up or down on the ROCKER to change the current setting, or press ENTER 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 specific depth range (making sure the range includes the bottom of the water).
Using the Fishfinder 340C > Using the Adjustment Menu
•Gain—controls the sensitivity of the Fishfinder’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 Dual, you can set the Gain separately for each frequency (50 kHz and 200 kHz).
•Color Gain—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 Dual, you can set the Color Gain separately for each frequency (50 kHz and 200 kHz).
•Beam—only appears when using a dual beam transducer. This controls the angle of the transducer beam. Wide beam allows you to see more fish in shallow water, even off the sides of the boat. You can also choose Narrow (default) beam.
•Whiteline—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.
