Lowrance Elite-3x Operating Manual - Page 6

Colorline Separates strong sonar echoes from weak echoes, making it easier to distinguish fish or structure from the bottom. A hard return will be shown as a wide, bright yellow area, whereas a soft return will be a narrow reddish-blue area. Range Fish ID Displays fish echoes as fish symbols instead of fish arches. Fish ID is not the most accurate method of fish detection as it can display structure and suspended debris as fish symbols on the display. Selects the water depth visible on the screen. The unit will not lock onto the bottom, if the selected range is too shallow. Noise Rejection Uses advanced signal processing to filter out the effects noise (boat pumps, water conditions, engine ignition systems, etc.) has on your display. Frequency Used to select the unit's sonar frequency. This unit supports 83 kHz and 200 kHz frequencies. Frequency can also be adjusted by pressing the Frequency key. Sonar Operation | Elite-3x 4