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Keel Offset
For all fishfinders, the transducer is installed underwater. So, there is a distance from
the transducer surface to water surface. And the sonar unit only detect the distance
from transducer surface to bottom. So, the depth display on the screen is not the
actual water depth.
For example, if the transducer is installed 2feet below the water surface, and the
screen shows the water depth as 40feet, then the actual water depth is 42feet.
By Keel Offset, you can calibrate the depth displayed on the screen. First, measure
the distance from the transducer surface to water surface, then set a value(for
example, 3.5feet).
To set the
Keel Offset
1) Press
MENU
to enter into menu setting.
2) Use the
Up / Down Arrow
to select
Display
option.
3) Press
Right Arrow
to enter into
Display
setting.
4) Use the
Up / Down Arrow
to select the
Keel Offset
option.
5) Press
Right Arrow
to enter into the setting.
6 ) Press
Right / Left Arrow
to increase or decrease the value.
7) Press
ENT
to confirm the setting.
8) Press
EXIT
to exit the menu setting.