Setting up the ForwardScan image
Depth
Controls depth range. Depth range is set to auto mode by default.
Forward range
Controls the forward looking search range. Maximum Forward range is 91 meters (300 feet).
Noise Rejection
Filters out signal interference and reduces on-screen clutter.
Record
Records ForwardScan sonar logs.
Pause
Pauses forward-looking Echosounder transmissions.
ForwardScan view options
Palette
Several display palettes are available for a variety of water conditions.
History ratio
Controls how much Echosounder history is shown behind the boat. The higher the ratio, the
more history will be shown.
Point data
By default, ForwardScan only shows the bottom. Select the Point data menu option to
specify to view no sonar data points, all sonar data points, or only points (Objects) in the
water column.
Show zones
Displays warning zones (yellow) and critical zones (red) on the screen. Refer to "Critical forward
range and Critical depth" on page 92.
Depth lines
Displays lines on the screen that make it easier to quickly estimate depth and the underwater
objects.
Heading extension
You can use the heading extension to monitor ForwardScan on the chart panel. Heading
extension colors are based on the ForwardScan alarm values.
ForwardScan | NSS evo2 Operator Manual
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