Humminbird LCR 3D manual Selecting Sensitivity

Note: Press STOP to keep the menus on-screen for a longer period of time.

To adjust any of these, press SELECT until a menu appears for the function you want. (The list rotates by one choice each time you press SELECT.)

As you select a function, on-screen instructions tell you how to use the arrow buttons and ENTER for adjustment. When first learning, you should also refer to the following pages.

After you adjust any function, the display returns to its full- screen reading. Note that the last function you select stays "active"-you can adjust it without having to press SELECT again. For example, if you often use Zoom, you can select it once, then switch it on and off by simply pressing ENTER.

The menu Select System works in all three views- although the following descriptions are illustrated in the 3D view unless there are significant differences in operation.

1. Selecting Sensitivity;

Factory setting: +0, Digital Filter On

The LCR 3D automatically adjusts to the proper amount of sensitivity for conditions (i.e. depth). You can bias the setting + or - 5 levels to suit your personal taste. Increasing the sensitivity adjustment can cause the display of very small targets, thermoclines and second returns (in 2D view) which might not be displayed at the +0 setting. If you want to manually adjust Sensitivity, select SENSITIVITY and press the UP or DOWN arrow button to adjust. For example, if you press the UP arrow twice, Sensitivity remains 2 settings higher than the normal automatic setting.

The Sensitivity menu also controls the Digital Filter. This is a filter that prevents other depth sounders on your boat or another boat from interfering with the LCR

3D. It is also effective in eliminating engine noise or other types of electrical interference from affecting your unit.

Normally, this filter should be ON, however if you are using a "through the hull" sensor mount, better results may be achieved with the Digital Filter OFF.

NOTE: The Digital Filter may somewhat adversely affect high-speed readings.