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Increase Trigger Delay to diminish the size of the red ring (left). To set Trigger Delay correctly,
reduce the ring to as small a size as possible, while keeping a black circle in the middle (enlarged
view, right).
In either case, continue to increase the Trigger Delay level until the ring is as small as possible,
while keeping a black circle in the middle. Every radar is different, but typically, a setting between
35 and 42 percent will get the job done.
If you over apply the Trigger Delay, the black circle will disappear. Decrease the Trigger Delay
level and it will reappear.
• Press EXIT to return to the main page display.
Adjust Main Bang Suppression
Main Bang Suppression is only for 4kW units — LRA 2000, LRA 4000 and LRA 5000. This feature
filters out electronic noise close to your vessel. It gives you control of radar sensitivity in the area
surrounding your vessel, approximately 180 feet in all directions.
Before making any adjustments to Main Bang Suppression, take your vessel out on open water
with fairly calm seas, like an open bay.
If you have any doubt about your understanding of the Main Bang Suppression feature,
you should have it set up by a qualified Radar technician.
• From the Radar Setup menu, press →|↓ to ADJUST MAIN BANG SUPPRESSION and press
ENT. That will launch the Main Bang Suppression vertical scrollbar.
• The small red ring we adjusted during Trigger Delay setup will still be on the display.
• Press ↑ slowly — Main Bang Suppression can be sensitive — to increase the Main Bang
Suppression level so the red ring becomes as thin as possible.
• Press ↓ to slowly decrease the level until you have returned the red ring back to its thinnest
point. Every radar is different, but typically, a setting between 2 and 8 percent will be
satisfactory.
In many cases, depending on the radar unit you have, over applying Main Bang
Suppression can make the ring disappear, start to make it wider or the ring can get to a
point where it is as small as it will get. At this point, increasing the main bang level will
not change the red ring. If the red ring does not does not decrease in size when
increasing the suppression level, reduce the level until you see a slight increase in the
size of the ring, then leave it at that setting.