Humminbird HELIX Series Operation Manual page 214

Adjust the Gain Offset
Use Gain Offset to tune the bottom hardness display. For example, if you're fishing a lake where most of the lake has a hard bottom,
reduce the gain so only the hardest bottom is displayed.
1. From the AutoChart menu, select Hardness Options.
Press the RIGHT Cursor key.
2. Select Gain Offset.
3. Press the RIGHT or LEFT Cursor keys to adjust the setting.
Adjust the Bottom Hardness Transparency
The bottom layer is displayed on top of the AutoChart Live map, and you can adjust the transparency to see different layers on the
view.
1. From the AutoChart menu, select Hardness Transparency.
2. Press the RIGHT or LEFT Cursor keys to adjust the setting.
AutoChart Live
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