A/D Converter Curve - Furuno GP-280 Operator's Manual

11.12 A/D Converter Curve

You may select an A/D curve according to objective, referring to the table below. The default
setting is A.
Setting
A
B
C
D
1. Press [MENU], [9], [3], [3] to display the Echo Signal menu.
2. Press [↓] to select A/D Curve.
3. Press [←] or [→] to select A, B, C or D as appropriate.
4. Press the [MENU] key several times to close the menu.
Characteristic
A lot of green but little red.
Noise is green in color.
Between A and C
Little green but lot of red.
Fine noise.
Noise in yellow and red.
Little green but lot of red.
Fine noise.
Noise in red.
Objective
Float detection
Reduce sea reflections
General navigation
Normal use: Useful for target
Long range detection.
Buoy detection.
Long range detection.
Buoy detection.
Longer range detection than C.
11-27