Simrad R2009 User Manual page 54

focused into a single beam by the radar antenna, a small amount energy is transmitted in
other directions. This energy is referred to as sidelobe energy and occurs in all radar systems.
The returns caused by sidelobes tend to appear as arcs.
When the radar is mounted where there are metallic objects near the radar, sidelobe energy
increases because the beam focus is degraded.
The increased sidelobe returns can be eliminated using the Sidelobe suppression option.
With dialog open:
• Press the rotary knob to switch focus between the manual and auto adjustment icons
• Turn the rotary knob to adjust the value of the active icon
Use the following procedure to adjust the sidelobe suppression:
1. Set the radar range to between 1/2 nm to 1 nm and the Sidelobe suppression value to
Auto
2. Take the vessel to a location where sidelobe returns are likely to be seen. Typically this
would be near a large ship, container port, or metal bridge
3. Traverse the area until the strongest sidelobe returns are seen
4. Change Auto sidelobe suppression to OFF then select and adjust the sidelobe
suppression control until the sidelobe returns are just eliminated. You may need to
monitor 5-10 radar sweeps to be sure they have been eliminated
5. Traverse the area again and readjust if sidelobes returns still occur
6. Press the ENT key to save the settings and leave the Sidelobe suppression dialog
Tuning
The Tuning options are used to do initial tuning of the radar system. The tuning should be
performed in an area with large and identifiable targets within range, and the value should
be adjusted until the best deflection is obtained.
With the Tune dialog open:
• Press the rotary knob to switch focus between the manual and auto adjustment icons
• Turn the rotary knob to adjust the value of the active icon
Local interference rejection
This is the start of your concept.
Open array park angle
The park angle is the final resting position of the antenna relative to the heading line of the
radar when the radar is set to standby. The antenna will stop rotating at the desired offset.
Halo light
Controls the levels of the Halo Radar pedestal blue accent lighting. There are four levels
possible for the lighting. The accent lighting can only be adjusted when the radar is in
standby mode.
Note:
The blue accent pedestal lighting might not be approved for use in your boating
location. Check your local boating regulations before turning the blue accent lights ON.
Software setup | R2009/R3016 User manual 55