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GPSMAP 188/188C Sounder Owner’s Manual 85
USING SONAR > SONAR PAGE
Size Split—enables width adjustment of the Sonar Page split
screen. This option is available only when a split screen zoom scale
is selected. You can adjust the size of the split window anywhere
from 1/4 to 3/4 width of the right half of the Sonar Page.
Resizing the Split Sonar Display
Double-Arrow
Size Split Menu Options
Sonar Tab Options
To access and change a setting on the Sonar tab:
1. Press MENU twice to access the Main Menu. Use the
ROCKER to highlight the Sonar tab.
2. Using the ROCKER, highlight the field, and press ENTER.
3. Highlight the setting, and press ENTER.
4. Press QUIT to return to the Sonar Page or a previous page.
Fish Symbols—determines how the Sonar Page displays
underwater targets and background information. If you select off,
the unit does not show fish symbols. If you select fish symbols,
the Sonar Page shows only the information related to that symbol.
Actual fish returns do not always appear as perfect arches (like
in Simulator Mode), due to the speed, fish orientation, or other
conditions.
Fish Symbols Off.
Suspended targets displays as fish symbols. Background
information is displayed.
Same as above with the target depth attached.
Suspended targets display as fish symbols. No background
information is displayed.
Same as above with target depth attached.
Water Type—because sound waves travel through Fresh and Salt
water at different rates it is necessary to select the Water Type to
ensure accurate readings on the unit.