Raymarine e7, User Reference

Page: 150 / 320

Menu Item Description Options
Adjust Gain Each of the gain presets can be manually adjusted
using gain, color gain and sea clutter functions. • Gain — enables you to use a preset in automatic
mode, or to adjust its gain manually between 0
and 100%.
• Color Gain — adjusts the intensity (color) of
displayed targets, but does not affect the number
of targets displayed. Increasing the color gain
causes more targets to be displayed in the same
color, which may help you to determine whether
an object is an actual target, or just background
noise. Reducing the color gain may provide better
target detail and detection.
• Sea — radar echoes from waves around your
vessel can clutter the center of the radar picture,
making it difficult to detect real targets. Adjusting
the sea gain reduces this clutter for up to 5 nautical
miles (depending on wave and sea conditions)
from your vessel.
• SuperHD Controls — for SuperHD scanners only:
– Antenna Boost: scales the effective antenna
size. At zero, the effective antenna size
matches its actual size. At 95%, the effective
antenna size is doubled. Increasing the effective
antenna size separates targets that appear
merged at lower settings.
– Power Boost: adjusts effective transmit power.
At zero, the radar operates at its standard power
(4 kW or 12 kW). At 90, the effective power is
increased by a factor of at least two. Increasing
the power makes targets more distinct from
noise. For maximum benefit, reduce power
boost to prevent saturation of strong targets.
150 e7 / e7D — User reference