B&G Zeus2 12 - Manual (Page 24)

18 | Software setup | Zeus2 Installation Manual
Scanner type
Identifi es the model of scanner connected to the network.
Software version
Check to make sure you have the latest software. check website for the latest version.
Serial Number
This number should be recorded for support and insurance purposes.
MARPA status
The MARPA status can identify if a heading sensor is on the network and that the radar is
receiving heading information essential for MARPA calculations.
Reset device ID
The earlier Zeus models only support one radar on the network. Should a radar be connected,
that has been connected to a dual radar network in the past, it may not be detected by the
Zeus because it may have an invalid Device ID. With the radar connected and power up,
select the Reset Device ID button to resolve this problem.
 Note:
This procedure must be performed with only one radar on the network, and only ap-
plies where a network combines Zeus with Zeus2.
Adjust bearing alignment
This is to align with the heading marker on the screen with the center line of the vessel, this
will compensate for any slight misalignment of the scanner during installation. Any inaccuracy
will be evident when using MARPA or chart overlay.
Point the boat to be perpendicular to the very end of a breakwater or peninsula. Adjust the
bearing alignment setting, so that the heading marker and land mass intersect.
Adjust antenna height
Set the radar scanner height relative to the water surface. The Radar uses this value to
calculate the correct STC settings.
Adjust local interference reject
Interference from some onboard sources can interfere with the Broadband radar. One
symptom of this could be a large target on the screen that remains in the same relative
bearing even if the vessel changes direction. Choose from Local interference rejection LOW,
MED or HIGH. Default is LOW
Sidelobe suppression
Occasionally false target returns can occur adjacent to strong target returns such as large
ships or container ports. This occurs because not all of the transmitted radar energy can be
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.
 Note:
This control should only be adjusted by experienced radar users. Target loss in harbour
environments may occur if this control is not adjusted correctly.
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 control in the Radar installation menu.
By default this control is set to Auto and normally should not need to be adjusted. However
if there is signifi cant metallic clutter around the radar, sidelobe suppression may need to be
increased. The control should be adjusted as follows:
• Set Radar range to between 1/2 nm to 1 nm and Sidelobe Suppression to Auto.
• 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
• Traverse the area until the strongest sidelobe returns are seen.
• Change Auto sidelobe suppression to OFF then select and adjust the sidelobe suppression