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130 C-Series Display Reference Manual
Showing or hiding the range rings
To turn the range rings on/off:
Changing the bearing mode for EBLs
The default bearing mode for EBLs is relative to your vessel’s heading. If heading data
is available, you can set the bearing mode to be relative (REL), magnetic/true (M/T).
When M/T is selected, the EBL bearings will be expressed as either true or magnetic
dependant on the equipment connected. The current EBL bearing is expressed on both
the radar screen EBL label and on the ADJUST EBL soft key.
To change the EBL reference:
6.7 Getting the best picture
You can improve the quality of the radar picture by using:
• The gain controls - sea, gain, tune, FTC and rain.
• The target display controls - interference rejection, expansion, wakes.
Using the GAIN functions
The gain function reduces the effects of false echoes and clutter.
For the best results Raymarine recommends that you retain the AUTO default setting.
You can however adjust these settings manually if required.
Manually adjusting the gain modes
The sea, gain and tune controls can all be adjusted manually if necessary:
o
Note:
The new values remain set even when you switch off the display and are applied
to both the active window and any other radar windows.
PRESENTATION
D6897-2
RANGE RINGS
OFF ON
Toggle as required
PRESENTATION
D6898-2
EBL REFERENCE
M/T REL
Toggle as required
GAIN
D8406_1
SEA
H
BR
Press to highlight
Toggle to manual (MAN)
TUNE
GAIN
AUTO MAN
A
U
T
O
SEA
MAN
TUNE
GAIN
Adjust
level as
required
MA
N
MA
N
50
81221_4.book Page 130 Tuesday, February 28, 2006 5:24 PM