Furuno MARINE RADAR 1823C - Manual (Page 53)

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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 or
[ENTER] knob.
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 the adjustment.
RETURN
M.B. SUPPRESSION
0
Main bung suppression setting window
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 respects to antenna height above the waterline. Set 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.
HIGH
MEDIUM
LOW
RADAR ANT. HEIGHT
Radar antenna height 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.