JMA-9100 Instruction Manual > 3.BASIC OPERATION > 3.4  GENERAL RADAR OPERATION
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3.4 GENERAL RADAR OPERATION
3.4.1 Interference Rejection (IR)
Interference by other radars is rejected.
Procedures
1) Left-click the  IR  button located at the lower left of the radar 
display.
The interference rejection modes are switched.
   →   →   →   → 
When a high interference rejection level is selected, the radar’s ability of 
detecting small targets such as buoys and small boats lowers.
In general,    should be selected.
 
• When viewing a radar beacon or SART signal, select 
 (Interference Rejector OFF) because IR 
processing suppresses the video.
Rejection levels of the interference rejector
 IR Off : Interference rejector off
 IR Low : Interference rejection level - low
 IR Middle : Interference rejection level - moderate
 IR High : Interference rejection level - high
Attentio n
IR Off
IR Off IR Low IR Meddle IR High IR Off
IR Low