NorthStar 6000i Installation Manual page 26

SECTION FIVE: Using manual control functions
Rain Clutter
Enter the rain clutter setting on the keypad or by using the cursor pad. Manual settings range from 0
to 8. Higher settings suppress more rain echoes.
Sea Clutter
Enter the sea clutter setting on the keypad or by using the cursor pad. Manual settings range from 0
to 255. Higher settings suppress more sea clutter echoes.
The Sea Clutter control can also be used to lower the gain near the vessel Doing this can help
eliminate side lobe echoes, or to separate two or more close echoes that appear as one large echo on
the screen.
Gain
Enter the gain setting on the keypad or by using the cursor pad. Manual settings range from 0 to
255. Higher settings display more echoes.
Manual gain adjustments will be different for each range scale. Longer ranges generally require more
gain. Using the Range Rider function described above minimizes the need for frequent adjustments.
Other adjustments
Sea state
The Sea State control is only available when the radar's Mode is set to Range Rider. Sea State adjusts
the sea clutter up or down slightly to correspond with the expected echoes from whitecaps and
breaking waves. The normal or "0" setting applies no changes, and is used when the sea state is the
same as when the settings were entered. Positive numbers are used when the sea is rougher, and
negative numbers when the sea state is calmer.
For safety reasons, the Sea State is automatically set back to "0" each time the unit is turned on.
To set the Sea State (when in Range Rider mode):
1. From the main radar screen, press Page 2 and Page 3 .
2. Press Sea State .
3. Use the cursor pad to enter a new number. Changes are shown immediately on the screen.
4. Press Done to return to the main radar screen.
Page 22 R2D Radar Installation Manual, Rev. A