Range

To set the range of the depth scale on the right side of the screen:

From the Full screen, press right or left on the ROCKER to set the depth scale. Select Auto Range to set the range automatically, depending on the depth at your current location.

Or, from the Home screen, select Full Screen > MENU > Range > Manual Range. Use the ROCKER to set the depth scale.

GainTo adjust the sensitivity (gain) of the sonar receiver:

1.From the Home screen, select Full Screen > MENU > Gain.

2.Select Manual Gain or Auto Gain. If you select Manual Gain, press right or left on the ROCKER to highlight the gain, then press SELECT. To see more detail, increase the gain. If the screen is cluttered, decrease the gain.

BeamTo select a narrow-beam or wide‑beam sonar angle:

1.From the Home screen, select Full Screen > MENU > Beam.

2.Select Wide or Narrow. Select Wide to view a larger area. Select Narrow to view more detail.

ZoomTo select the screen zoom:

1.From the Home screen, select Full Screen > MENU > Zoom.

2.Select No Zoom, 2x, or 4x. Select Bottom Lock to lock the zoom window to the bottom. Select Split Zoom to switch to the Split Zoom screen (page 9).

Fishfinder 300C Quick Start Manual