NAVMAN
8120/8084
Installation and Operation Manual
78
There is a choice of five color palettes:
Black
,
Blue
,
White
,
Vivid
and
8 color
.
The first four palettes display more detail, and
each color covers a 1.5 dB signal range. The
8
color
palette displays less detail, and each
color covers a 3 dB signal range.
Interference filter
No filter, normal setting.
Filters the echo signal to remove spiky
interference such as engine noise or depth
sounders on nearby boats.
Noise filter
Averages the echo signal to remove rapid
changes. Select Medium or High to give a
smoother bottom trace–this may help to
detect a deeper bottom; however these
settings may also remove fish echoes. Select
Off for best fishfinding.
Surface clutter filter
Use this filter to hide the surface noise. Any
significant echoes (such as fish) will still be
displayed.
Pulse length
This can be used to specify the length of
the transmitted ultrasonic pulse. A short
pulse length improves the window detail but
contains less energy, therefore it does not
penetrate as deeply into the water as a longer
pulse.
There is a choice of
Auto
,
Short
,
Medium
or
Long
. The
Auto
setting is
recommended.
Pulse power
This can be used to specify the power output
of the transmitted ultrasonic pulse. Low
power output conserves the battery and
produces a clear display in shallow water.
There is a choice of
Auto
,
Low
,
Medium
or
High
. The
Auto
setting is recommended.
19-4 Setup > Radar
Note:
This option is shown only when the
radar is enabled (see Section 18-3)
1 Press MENU twice to display the Setup
menu, then select Radar:
Rotation
The current radar rotation is shown in the top
left corner of the radar screen. If COG data or
heading data is not available from a compass,
the radar rotation is automatically set to Head
up.
However, you are strongly recommended
to use a good quality product (such as a
NAVMAN HS02, HS03 or Autopilot) to provide
heading data.
If heading data is available from a compass,
the options are:
• North up works only when COG data or
heading data from a heading sensor is
available. North is always at the top of the
radar screen.
You can easily compare the radar screen to
a chart in North up.
• Head up means that the radar image
rotates underneath your boat, so the
direction in which you are heading is
pointing to the top of the radar screen.
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