NAVMAN
8120/8084
Installation and Operation Manual
67
•
Range Rider.
Adjust the sea clutter
setting yourself for a particular radar
range, then have those settings stored
and automatically re-used whenever
you operate at that range again.
18-6-4 Changing the sea clutter level
If the sea clutter level is set too low, a lot of
sea clutter will be displayed. If the sea clutter
level is set too high, small targets may not be
shown in the radar window.
If the sea clutter mode is set to Harbour or
Offshore, and you adjust the sea clutter level
manually, the sea clutter mode changes to
Manual.
If you are in Range Rider mode when you
adjust the sea clutter level, the sea clutter
mode does not change to manual but the
setting is stored and used automatically
whenever you use the same range again.
To change the sea clutter level:
1 From the radar window, press
MENU
then
select
Adjust Radar
.
2 Select
Sea Clutter Level
then
use and to decrease or increase the
setting.
18-6-5 Changing the rain clutter
Rain clutter consists of random dots that can
merge into badly-defined echoes on your
radar screen.
The random signals are returned from
rain, hail, sleet, or snow and can result in a
confusing display.
If the rain clutter is set too low, there will be
excessive rain clutter displayed whenever it’s
raining. If the rain clutter is set too high, very
large targets such as the coastline will appear
to be hollow.
To change the rain clutter setting:
1 From the radar window, press
MENU
then
select
Adjust Radar
.
2 Select
Rain clutter
then use
and to decrease or increase the setting.
18-6-6 Changing the threshold level
Use this to define the threshold level of the
weakest echo that you want to show on the
radar screen. The threshold level is shown as
a percentage.
100% is the maximum threshold level,
meaning that only the strongest echoes are
shown. 0% is the minimum threshold level,
meaning that all echoes are shown.
To change the threshold level:
1 From the radar window, press
MENU
then
select
Presentation
.
2 Select
Threshold
then use and
to decrease or increase the setting.
18-7 Changing the echo expansion setting
If you have several small targets in view
and want to make them easier to see, use
the echo expansion option.
Note
that the
resolution decreases as the target size
increases, so use this option only when target
detection and visibility is more important
that the quality of the display.
To change the echo expansion setting:
1 From the radar window, press
MENU
then
select
Presentation
.
2 Select
Echo Expansion
. There are
three choices:
•
Off
. No echo expansion.
•
1
. Targets expanded x 2.
•
2
. Targets expanded x 3.
Содержание 8084
Страница 1: ...w w w n a v m a n c o m Installation and Operation Manual Navman 8120 8084...
Страница 103: ...NAVMAN 8120 8084 Installation and Operation Manual 103 NAVMAN 8120 Physical Dimensions NAVMAN 8084...
Страница 114: ......
Страница 116: ...Lon 174 44 535 E Lat 36 48 404 S Made in New Zealand MN000444C G Navman 8120 8084 Installation and Operation Manual...