Humminbird Onix Opeartion Manual page 215

Main Bang Suppression
Set the Main Bang Suppression to create a range around the vessel, or the center of the radar pane, where the radar signal will be
suppressed. The targets in this range will not be seen.
WARNING! Targets in the Main Bang Suppression Range are not displayed on the Radar View.
1. Select Main Bang Suppression from the Installation menu.
2. Main Bang Suppression: Press and hold the slider, or press and hold the ENTER key, to adjust the Main Bang Suppression
range. A high setting sets a wider radius around the vessel and scanner, while a low setting limits the radius to a shorter
range.
3. You can also adjust the following optional settings:
Gain controls the amplification of the radar signal.
Sea Clutter adjusts the filter that controls the amount of clutter on the view caused by rough sea conditions.
Rain Clutter adjusts the filter that controls the amount of clutter on the view caused by rain or snow.
4. Close: Tap the Back icon, or press the EXIT key.
Tune the Radar
The technician can tune the radar automatically (Auto Tune) or enter specific settings manually (Manual Tune). Tuning is used to
optimize the radar system settings. For best results, run the tuning while there are targets within range, so it will be easier to review
the data and make adjustments.
WARNING! The radar should only be tuned under very limited circumstances. Contact Customer Service at 1-800-633-1468
before tuning the radar.
1. Select Tune from the Installation menu.
2. Select Auto Tune or Manual Tune.
Auto Tune: When you select Auto Tune, the control head stops radar transmission and starts automatic radar tuning.
Manual Tune: Select Coarse Adjustment or Fine Adjustment. Press and hold the slider, or press and hold the ENTER key, to
adjust the settings.
3. Close: Tap the Back icon, or press the EXIT key.
215 Radar Configuration