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USING THE 320 SERIES
MODES OF OPERATION
Note: The second return does not appear at many of the deeper
depth ranges. The appearance of the second return depends on
depth of the water, water conditions, bottom hardness and the gain
setting.
The 320 operates with the second return visible until it is returned to the
original settings, by turning the unit off and then on.
B
L
OTTOM
OCK
Bottom Lock Mode tracks the bottom similar to Automatic Mode, however the
display shows a full range view on right and a zoomed window on the left. The
zoomed window provides added display
resolution for separating sonar returns that
are very close together, such as fish
suspended close to the bottom.
As
the
depth
automatically keeps the bottom visible in
the zoomed window and the full range
view. In the full range view, horizontal
zoom preview bars define the area of
bottom being enlarged. The default setting
varies based on the depth range. However,
this setting can be changed to show more
area around the bottom, or the bottom in
greater detail.
To change the area of the bottom being
zoomed, follow these steps:
1. Make sure the 320 is operating in Bottom Lock mode.
2. Push the Range ± Knob. An adjustment indicator appears by the lower zoom
preview bar indicating this is the selected depth limit for adjustment.
Note: Pushing the Range Knob toggles between the upper and lower
zoom preview bar adjustment. If the lower zoom preview bar is to be
adjusted, push the Range Knob until it is selected.
12
Z
M
OOM
ODE
changes
the
320
Zoom
Window
Bottom Lock Zoom Mode
Zoom Preview
Bars
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