Noise Filter
(Advanced)
Settings: Off, L ow, Medium, High1, High2 , H igh3;
Default = Low
Noise Filter adjusts the s onar Noise Filter t o limit in terference on the display from sources such as your boat engine, turbulence, or other sonar devices.
The Off se tting removes all filtering. Low , Medium, and High1, High2, High3 settings add progressive filtering of the sonar returns. High1, High2, and High3 are useful when there is excessive trolling motor noise, but in some deep water situations, the High settings may actually hinder your unit’s ability to find the bottom.
Max Depth
(Advanced)
Settings: AUTO, 10 to 1000 ft, 3 to 330 m [International
Models only]; Default = AUTO
Max Depth controls the maximum depth of operation. When Max Depth is set to Auto, the Fish finder w ill acquire bo ttom readings a s needed (w ithin the capacity of the unit). When Max Depth is set to match your fishing maximum depth, your Fishfinder will not attempt to acquire sonar data below that depth, so more detail will be shown on the screen.
NOTE: If the bottom is deeper than the Max Depth setting, the digital depth readout will flash, indicating that the Fishfinder cannot locate the bottom.
Water Type
(Advanced)
Settings: Fresh, Salt (shallow), Salt (deep); Default = Fresh
Water Type configures your unit for operation in fresh or sa lt water. In salt water, you can also choose the shallow or deep setting.
Water Type affects the accuracy of deep water dep th readings. In salt water, what would be cons idered a large fis h might be 2 to 10 times bigger than a large fish in fresh water (depending on the type of fish yo u are seeking). The salt water setting allows for a greater range in fish size adjustment to account for this difference.
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