Sonar Tab - Garmin FishFinder 340C Owner's Manual

• Scale—controls the depth scale displayed vertically along
the right side of the graph. The settings are Overlay
(default), in the Corners, Basic scale, or No Scale.
• Custom Range—allows you to specify a custom viewing
range or scale. When On, this range appears as Custom in
the Range setting. The left value is the top of the scale and
the right value is the bottom of the scale.
• Color Scheme—sets the colors for the Sonar and Flasher
Pages. The default is Classic White.
• Temperature and Water Speed—hides or displays
temperature and water speed on the Sonar Page. When set to
Auto, the Fishfinder automatically displays this information,
only if it is received from the transducer.
Fishfinder 340C Owner's Manual
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Sonar Tab

The Sonar tab enables you to set up initial settings and calibrations.
The following settings are available:
• Auto Gain—controls the aggressiveness of the Auto Gain
when the Gain option is set to Auto (see page 37). The
higher the setting, the greater the number of targets appear
on the screen. The lower the setting, the less clutter on the
screen. The settings are Low, Medium (default), and High.
• Auto Color Gain—controls what colors are applied to the
objects on the screen when the Color Gain option is set
to Auto (see page 37). Color DCG is based on depth and
makes it easier to spot subtle changes in bottom conditions
or fish sizes. DynaColor™ (default) represents the latest
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