Lowrance HDS Live Operator's Manual page 132

132
Noise Rejection
Custom: Adjustable
Harbor: Medium
Offshore: High
Weather: Medium
Bird: High
* Maximum range is dependent on antenna length.
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).
In addition, CALM, MODERATE or ROUGH STC Curve settings are
available in the Radar options menu to better optimize the radar
image to your liking.
Gain
The gain controls the sensitivity of the radar receiver.
Radar| HDS Live Operator Manual
Fast scan
Custom: Adjustable
Harbor: High
Offshore: High
Weather: OFF
Bird: OFF