Sensitivity controls

Optimum performance is usually achieved using the default settings. You may be able to enhance the radar image using the sensitivity controls.

Sensitivity settings can be accessed by pressing the OK button while in motion mode, or the Adjust sensitivity menu: Menu > Adjust sensitivity.

RadarSensitivity controls.

Control Description

‘G’ GainRadarGain control

The control determines the signal strength at which target returns are shown onscreen.

A higher value produces more target returns and noise onscreen.

‘R’ RainRadarRain suppression

Precipitation appears on the radar screen as lots of small echoes which continuously change size, intensity and position. The rain control suppresses these echoes making it easier to identify real objects.

The higher the rain control is set the more echoes will be suppressed.

‘S’ Sea clutterRadarSea clutter

Radar echoes from waves can clutter the radar screen. The sea control suppresses these echoes (for up to 5 nm depending on conditions) making it easier to identify real objects.

The higher the sea control is set the more echoes will be suppressed.

‘CG’ Color GainRadarColor Gain

The control sets the lower limit for the color used for the strongest target returns. All target returns above this value are displayed in the strongest color. Those with a weaker value are divided equally between the remaining colors.

All to Auto

Sets all Sensitivity settings to Auto.