How To Measure The Range To A Target; How To Adjust Range Ring Brilliance - Furuno FR-8045 Operator's Manual

1. OPERATION
1.15

How to Measure the Range to a Target

You can measure the range to a target in three methods. You can use the fixed range
rings, the cursor (if set to measure range and bearing) and the VRM (Variable Range
Marker).
Use the fixed range rings to get a rough estimate of the range to a target. The fixed
range rings are the concentric solid circles about your ship. The number of rings
changes with the selected range scale. The interval of the range ring is displayed at
the upper-left corner of the screen. Count the number of rings between the center of
the display and the target. Check the range ring interval and measure the distance of
the echo from the nearest ring.
1.15.1

How to adjust range ring brilliance

1. Press the MENU key to open the menu.
2. Use
3. Use
Brill/Color
Display
Echo
Custom 1
Custom 2
Custom 3
Alarm
Target Trails
Tuning
Others
Target
Adjusting range ring brilliance
4. Use
turns off the range rings.
5. Press the MENU key to close the menu.
1-16
or to select [Brill/Color] and press the ENTER key.
or to select [Rings Brill] and press the ENTER key.
Menu
Echo Brill
Rings Brill
Mark Brill
HL Brill
Character Brill
Echo Shading
Display Color
Echo Color
Background Color
[ENTER]: Enter
[MENU] Exit
Brill/Color menu
or to select an option and press the ENTER key. [4] is the brightest. [Off]
Rings/Brill options
Brill/Color
: 8
: 4
: 4
: 4
: 4
: 1
: Custom
: Yellow
: Black
[CANCEL/HL OFF]: Back
Off
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2
3
4