Garmin FishFinder 340C Owner's Manual page 44

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SING THE ISHFINDER
• Depth Line—adds a horizontal depth line across the screen
that is used to measure the depth of underwater objects. The
depth of the line appears on the right side of the line. Press
up or down on the Rocker to control the position of the line
on the Sonar Pages. Move the slider to the top to turn off
Depth Line.
• Zoom—sets a screen zoom scale. The following settings are
available:
Off—turns off the Zoom function.
2x Zoom––displays the 2x zoomed picture.
4x Zoom––displays the 4x zoomed picture.
Btm (Bottom) Lock––displays the Bottom Lock (returns
from the bottom up) picture. When using this setting, "BL"
appears at the bottom of the screen.
• Zoom View—available when you select a Zoom scale other
than Off. You can use the Zoom View setting to change the
viewing range of a zoomed display. Auto follows the water
bottom. If you select Bottom Lock, use the Span setting to
adjust how far off the bottom the Fishfinder displays data.
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SING THE DJUSTMENT ENU
• Tools—controls the display of useful sonar tools. The
following options are available:
A-scope—when you turn on A-scope, a vertical flasher
bar appears on the far-right side of the screen. This flasher
displays structure and bottom returns much the same as the
Flasher Page. The horizontal width of the A-scope signal
indicates the strength of the signal.
Color Bar—shows a gradient scale of the current Color
Gain setting (see page 37).
Temp Graph—appears only if you have a temperature-
capable transducer. This setting toggles on or off the display
of a temperature graph on the bottom of a Sonar Page, and it
matches the scrolling data.
• Split When Zoomed—splits the screen when you use the
Zoom option. If you turn on Zoom, then this setting splits the
screen. If Zoom is Off and you turn on Split When Zoomed,
the last used zoom level is used on the screen.
• Swap Split—available on the Split Sonar Page when
Frequency is set to Dual. This switches on which side the
frequencies appear.
Fishfinder 340C Owner's Manual