Radar sector blanking
(Halo Radar only)
You can define up to four sectors on the PPI inside which no radar data is transmitted. This
enables you to blank-out interference caused by features on your boat or from a secondary
radar. The blanking occurs on the main radar image and radar overlay on a chart. An enabled
sector is shown as a magenta outline with 3 arcs crossing the blanking area. To specify radar
sector blanking, refer to the Halo Radar Installation Manual.
Ú
Note: Radar sector blanking is only available for Halo radars.
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 select
between the control images by selecting the control image or by pressing the rotary knob
on a remote controller. Active control expands and displays its name in full. You can then
adjust the value by using the slide bar or by turning the rotary knob on the remote controller.
You can also adjust the image settings from the radar menu.
Radar modes
Use modes are available with preset control settings for different environments. Not all
modes are available for all radar transceivers.
Modes in dual ranges
(Halo Radar only)
Modes can be set independently for each range. For example, you can have Offshore mode
for range A and Weather mode for range B. However, interaction between ranges occurs in
some cases:
• When using Bird mode for both ranges, maximum range is restricted to 24 NM and range
resolution is reduced.
• Fast scan - The antenna rotation speed is set to the slower of the two modes selected. For
example, Fast Scan is disabled when using Harbor and Weather modes because Fast Scan
is Off in Weather mode.
• The Interference reject setting can affect the interference seen or removed on both
ranges.
Directional clutter rejection
(Broadband 4G Radar only)
This mode automatically works when GAIN = AUTO and SEA = HARBOR or OFFSHORE. The
purpose is to allow smaller vessels to be seen in the leeward direction of the sea clutter. The
GAIN of the radar receiver is increased dynamically during the sweep, in the leeward
direction, for increased target sensitivity in heavier sea states.
When GAIN or SEA = MANUAL, the Directional Clutter Rejection mode will be OFF (non-
directional).
Radar | NSO evo3S MPU Operator Manual
51
To Next Page
Loading...
Need help?
General
