3. ADJUSTMENTS
3-5
3.4 How to Suppress Main Bang
Main bang is the clutter at the center of the screen that you typically see on the radar
display, and it may mask close-in targets. If main bang appears at the screen center,
suppress it as follows.
1. Transmit the radar on a long range and then wait ten minutes.
2. Adjust the gain to show a slight amount of noise on the display.
3. Select the 0.125 NM range, and turn off the A/C SEA and A/C RAIN controls.
4. Show the [RADAR INSTALLATION] menu, then select [ECHO ADJUSTMENT].
5. Select [MBS LEVEL], then set a value that causes the main bang to faintly disap-
pear. The setting range is 0 to 255 (default: 0).
3.5 Other Settings
This section describes the menu items not previously described.
3.5.1 [ECHO ADJUSTMENT] menu
Open the main menu then select [RADAR INSTALLATION]o [ECHO ADJUSTMENT]
to open the [ECHO ADJUSTMENT] menu.
[VIDEO ADJUST VALUE]
Adjust the video level manually to remove noise.
Preset the radar as follows:
• Interference Rejector (IR): 2
• Gain: 80
• Echo Stretch (ES): OFF
• Echo Averaging (EAV): OFF
• Range: 24 NM
• Pulse Length: Long
1
BACK
2 EAV MODE
A / B
ECHO ADJUSTMENT(1/2)
ECHO ADJUSTMENT(1/2)
0
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