Main radar PPI Radar overlay on a chart
Adjusting the radar image
You may be able to improve the radar image by adjusting the radar sensitivity, and by
filtering out the random echoes from sea and weather conditions.
The radar control images are located in the upper right corner of the radar panel. You can
adjust the image settings by selecting the radar control image or by pressing the rotary knob.
The selected control expands and displays its name in full and a slide bar is displayed. You
can then adjust the value by turning the rotary know or by using the slide bar.
You can also adjust the image settings from the radar menu.
Radar use modes
(Halo Radar only)
Radar modes are available with default optimal control settings for different environments.
The following modes are available:
• Custom - In this mode all radar controls can be adjusted and will be retained after a mode
change or radar power cycle. Radar defaults are set for general purpose use.
• Harbor - In this mode the radar settings are optimized for areas such as busy waterways
and large man-made structures where good target discrimination and rapid image
updates are needed.
• Offshore - In this mode the radar settings are optimized for offshore sea conditions and
making isolated targets larger and easy to see.
• Weather - In this mode the radar settings are optimized for best detection and
presentation of rain clutter. Image update rate is slowed and color depth is increased.
• Bird - In this mode the radar settings are optimized for best detection of birds. The radar is
set up for maximum sensitivity. This mode is not recommended for use in congested
harbor environments.
Not all controls are adjustable in each mode. The following list shows preset controls and
adjustability for each control.
Range
Custom: Adjustable
Harbor: Full*
Offshore: Full*
Weather: Full*
Bird: Up to 24nm
Threshold
Custom: Adjustable
Harbor: 30%
Offshore: 30%
Weather: 0%
Bird: 0%
Gain
Custom: Adjustable
Harbor: Adjustable
Offshore: Adjustable
Weather: Adjustable
Bird: Adjustable
Target Expansion
Custom: Adjustable
Harbor: Low
Offshore: Medium
Weather: OFF
Bird: OFF
Sea
Custom: Adjustable
Harbor: Adjustable
Offshore: Adjustable
Weather: Adjustable
Bird: Adjustable
Interference Reject
Custom: Adjustable
Harbor: Adjustable
Offshore: Adjustable
Weather: Adjustable
Bird: Adjustable
Radar | NSS evo2 Operator Manual
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