Adjustment Options - Garmin West Marine 276C Plus Owner's Manual

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ETTING UP AND SING ONAR

Adjustment Options

Sonar Adjustments
Range—sets the display depth range used for viewing. The unit can
be set to automatically track the bottom or set to a user-specified
depth range.
Zoom—used to quickly select a display zoom scale or to split
the display. When a scale other than No Zoom is selected, the
Adjustment Menu displays a new selection labeled View or Span.
The Zoom function is divided into six display levels:
• 2X Split—shows two reduced-size sonar pictures at the same
time. The right half of the display screen shows the complete
sonar picture at its original scale. The left half shows a portion
of the original picture at 1/2 depth scale.
• 2X Zoom—displays the 2X zoomed picture on the full screen.
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• 4X Split—shows two reduced pictures, the right at the
original depth scale and the left at 1/4 the original depth scale.
• 4X Zoom—displays the 4X zoomed picture on the full screen.
• Btm (Bottom) Split—shows two reduced pictures, the right
at the original depth scale and the left showing sonar returns
from the bottom up. All target depths read as a distance from
the bottom.
• Btm (Bottom) Lock—displays returns from the bottom up on
the full screen.
TIP: Quickly zoom in and out of the Sonar display by pressing
the IN and OUT keys. Deactivate the zoom function by pressing
the OUT key until the No Zoom setting appears.
View/Span—available when a Zoom scale other than No Zoom is
selected. The View or Span setting is used to change the viewing
range of a zoomed display. If the display is 2X or 4X split, only
the zoomed portion on the left side of the display is affected by the
change. If the display is Bottom Split or Bottom Lock, Span adjusts
how far off the bottom the unit displays data.
Gain—allows you to control the sensitivity of the unit's receiver,
which provides flexibility in what is displayed. To see more detail,
increase the receiver sensitivity by selecting a higher gain. If too
much detail is shown or if the screen is cluttered, select a lower gain.
276C Plus Owner's Manual
1/13/2005 10:44:00 AM