Furuno 1833 Installation Manual page 36

3.3.6 M. B. (Main Bang) SUPPRESSION
Main bang (black hole), which appears at the display center on short ranges, can
suppressed as follows.
1. Open the RADAR SETUP menu and select M.B. SUPPRESSION by trackball.
2. Press the EDIT soft key or [ENTER] knob to show the setting window.
3. Select ON.
4. Press the [ENTER] knob or ENTER soft key to start video adjustment.
5. Rotate the [ENTER] knob to suppress main bang (between 0 and 25).
6. Press the RETURN soft key.
3.3.7 RADAR ANTENNA HEIGHT
The A/C SEA function is affected by the antenna height above the waterline. Enter antenna
height above the waterline to optimize the A/C SEA function.
1. Open the RADAR SETUP menu and select RADAR ANTENNA HEIGHT.
2. Press the EDIT soft key or [ENTER] knob to show the setting window.
3. Select antenna height above the waterline; HIGH (6-10 m), MIDIUM (3-6 m) or LOW
(0-3 m). The default setting is MEDIUM.
4. Press the [ENTER] key or ENTER soft key to finish.
3-8
M.B. SUPPRESSION
0
Main bung suppression setting window
RADAR ANT. HEIGHT
HIGH
MEDIUM
LOW
Radar antenna height setting window
RETURN