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USING THE 160
MODES OF OPERATION
2. Push the Range± Knob. An adjustment
Optimized Display showing
indicator appears at the lower right corner
second return
of the chart window.
3. Turn the Range± Knob clockwise until
the second return is visible on the display.
4. To return the depth range to normal
viewing,
rotate
the
depth
range
counterclockwise until the depth range
stops updating.
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 160 operates with this offset depth range until it is returned to the
original settings or the unit is turned off.
B
L
Z
M
OTTOM
OCK
OOM
ODE
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 changes the 160 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 160 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.
14
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