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USING THE 160
MODES OF OPERATION
2. Push the Range± Knob. An adjustment
Optimized Display show ing
indicator appears at the low er right corner
second return
of the chart w indow.
3. Turn the Range± Knob clockw ise until
the second return is visible on the display.
4. To return the depth range to normal
view ing,
rot at e
t he
dept h
range
counterclockw ise 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 w ater, w ater conditions, bottom hardness and the gain
setting.
160
The
operates w ith 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 M ode tracks the bottom similar to
Automatic M ode, how ever the display show s a full range view on right and
a zoomed w indow on the left. The zoomed w indow provides added display
resolution for separating sonar returns that are very close together, such as
fish suspended close to the bottom.
160
As the depth changes the
automatically keeps the bottom visible in the
zoomed w indow 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. How ever, 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:
160
1. M ake sure the
is operating in Bottom Lock mode.
2. Push the Range± Knob. An adjustment indicator appears by the low er
zoom preview bar indicating this is the selected depth limit for adjustment.
14
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