ForwardScan image with Show zones active
1 Critical zone
2 Warning zone
Warning Forward Range and Warning Depth values are based on the selected Critical
Forward Range and Critical Depth values.
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Note: To receive Critical Zone alerts, enable ForwardScan alarm in the Alarm settings
dialog. For more information about enabling alarms, refer to Alarms.
Transducer angle
We recommend installing the transducer vertical to the waterline. In cases where that is not
possible, the Transducer Angle setting helps offset the difference between the transducer
angle and the waterline.
The angle can be adjusted from 0 (vertical) to 20 degrees.
Warning: Adjustments to the transducer angle value should be done with
caution. Large variations in the transducer angle value can distort depth
data, increasing the risk of striking underwater obstructions.
Depth offset
Setting for ForwardScan transducers.
All transducers measure water depth from the transducer to the bottom. As a result, water
depth readings do not account for the distance from the transducer to the lowest point of
the boat in the water or from the transducer to the water surface.
• To show the depth from the lowest point of the vessel to the bottom, set the offset equal
to the vertical distance between the transducer and the lowest part of the vessel, A
(negative value).
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ForwardScan | NSO evo3 Operator Manual
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