Sonar sensitivity controls
Optimum performance is usually achieved using the default settings. You can adjust the image using the Sensitivity controls to improve the displayed image. Sensitivity setting adjustment is also applied to the sonar history.
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Sensitivity settings can be accessed using the onscreen Image adjustment icon, or the Adjust sensitivity menu option: . |
SonarSensitivity controlsThe Sensitivity controls available are dependent upon the transducer and sonar module in use.
| Connector | Description |
|---|---|
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‘G’ GainSonar Gain The control determines the signal strength at which target returns are shown onscreen. The Gain control can be set to Auto or Manual. Depending on Sonar module, in Auto you can add an offset of up to ± 50%. A higher value produces more target returns and noise onscreen. |
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‘I’ IntensitySonarIntensity, or ‘CG’ Color Gain Color 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. The control can be set to Auto or Manual. Depending on Sonar module, in Auto you can add an offset of up to ± 50%. |
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‘SF’ Surface FilterSonarSurface filter , or ‘NF’ Noise filterSonarNoise filter The control determines the amount of noise displayed onscreen by varying the gain throughout the water column. A lower value decreases the depth at which the control is applied. The control can be set to Auto or Manual. |
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All to Auto Sets all Sensitivity settings to Auto with 0% offset. |