NorthStar Navigation 8000I quick start Change the radar gain setting, What is sea clutter?

ƒRange Rider. Select this to adjust the radar gain yourself for a particular radar range, and have the 8000i store those settings and re-use them whenever you operate at that range again.

ƒAuto. Select this to have the 8000i adjust the radar gain automatically.

4.Select the new setting. The new setting is applied immediately to all the Radar screens and stays until you change it again.

5.When you are finished, select Return.

3.37Change the radar gain setting

You can use this to adjust the sensitivity of the radar receiver. Ideally, the radar gain should be set so that background noise is just visible on the Radar screen. Any changes are global and apply to all the Radar screens.

If the radar gain is too low, weak echoes won't be shown. If the radar gain is too high, strong echoes will be difficult to see amongst the large amount of background noise.

The radar gain is shown as a percentage.

(If the radar Gain Mode is set to Auto and you adjust the gain setting manually, the Gain Mode is changed to Manual.)

To change the radar gain setting:

1.Display the Radar screen and control panel. If you can't see the Adjust Radar button, select Return.

2.Select Adjust Radar.

3.Select Gain and a slider box appears. The current setting is shown as a line within a solid bar of color and as a percentage.

4.Drag the line, or use the rotary knob, to change the radar gain setting.

5.Select OK to confirm the new setting. The new setting is applied immediately to all the Radar screens and stays until you change it again.

6.When you are finished, select Return.

3.38What is sea clutter?

Sea clutter usually appears as confusing, random signals close to your vessel on the Radar screen.

High waves that can reflect the radar signal will produce the maximum amount of sea clutter on the Radar screen.

You can change the sea clutter mode and setting yourself, or let the 8000i change it automatically, to compensate for the sea conditions and reduce the amount of sea clutter on the Radar screen.

3.39Change the sea clutter mode

There are four choices of sea clutter mode:

Northstar 8000i Quickstart Guide 37