92
Reference section 6 — Radar
Using the Adjustment keys
Northstar 972
immediately after the cursor pad is
released), or
•
using the numeric keys on the
keypad to enter the value
Image adjustments
Press the keys to adjust the gain, sea
clutter, rain clutter, or interference
rejection.
When pressed, the keys turns red to
indicate it is active and its value can be
adjusted.
Range Rider
is a Northstar exclusive feature,
strongly recommended when manual
settings are required. The user can freely
make any needed gain and clutter adjust-
ments, and these settings are
“remembered” for each range. When the
range is selected again, the last-used gain
and clutter settings for that range is reap-
plied.
Range Rider
can be selected on the
Radar Options
screen.
Gain
controls the strength of all echoes,
and should be adjusted for a pleasing and
useful image. Higher values display
brighter echoes.
Gain can be set to automatic or manual
mode. Press the activated
Gain
key to
switch modes. The gain setting can be
entered on the keypad or by using the
cursor pad. Manual settings range from 0
to 99. Manual gain adjustments will be
different for each range scale. Longer
ranges generally require more gain.
If speckling appears on the screen, you
may wish to decrease the gain a bit or
increase the sea clutter setting.
Sea Clutter
controls the strength of the
clutter echoes returned from the ocean
surface. Higher values suppress more
clutter.
Sea Clutter can be set to automatic or
manual mode. Press the activated
Sea
clutter
key to switch modes. The sea clutter
setting can be entered on the keypad or by
using the cursor pad. Manual settings
range from 0 to 99.
Rain Clutter
controls the strength of the
clutter echoes returned from rain or fog.
Higher values suppress more clutter.
Press the activated
Rain clutter
key to
switch modes. The rain clutter setting can
be entered on the keypad or by using the
cursor pad. Manual settings range from 0
to 99.
Interference rejection.
Certain types of
interference (for example, from radars on
other vessels) can be lessened by using the
interference rejection filter. Select Off, 1
(low), 2 (medium), or 3 (high).
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Страница 1: ...Northstar 972 Quickstart Guide and Reference Manual Revision B ...
Страница 12: ...8 Getting Started Purchasing charts Northstar 972 ...
Страница 19: ...15 Displaying the chart screen Quickstart Guide Revision B Chart screen ...
Страница 30: ...26 SAVE and Man Overboard MOB Northstar 972 ...
Страница 44: ...40 Reference section 1 Using the Chart Screen Using the distance and bearing calculator Northstar 972 ...
Страница 54: ...50 Reference section 3 Position coordinates Using Phantom Loran Northstar 972 ...
Страница 88: ...84 Reference section 5 Creating waypoints and routes Transferring waypoints to and from a PC Northstar 972 ...
Страница 90: ...86 Reference section 6 Radar Transferring waypoints to and from a PC Northstar 972 ...
Страница 106: ...102 Reference section 7 Echo sounding MARPA targets Northstar 972 ...
Страница 130: ...126 Reference section 7 Echo sounding Troubleshooting the echo sounder Northstar 972 ...
Страница 131: ...127 Reference Manual Revision B Reference section 8 Video Video sources 128 Displaying video 128 ...
Страница 134: ...130 Reference section 8 Video Displaying video Northstar 972 ...
Страница 135: ...131 Reference Manual Revision B Reference section 9 Alarms and TideTrack Alarms 132 TideTrack 137 ...
Страница 145: ...141 Reference Manual Revision B Reference section 10 Networking General information 142 Restrictions 142 ...
Страница 148: ...144 Reference section 10 Networking Restrictions Northstar 972 ...
Страница 158: ...154 Reference section 11 Setup Changing the time zone Northstar 972 ...
Страница 164: ...160 Reference section 11 Appendix A Datum list Changing the time zone Northstar 972 ...
Страница 168: ...164 Northstar 972 Notes ...
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