Furuno FAR-2228-BB Operator's Manual page 132

1. OPERATIONAL OVERVIEW
Notes regarding dual radar operations
• The dual radar function is available between two FAR-2xx8 series radars using the
LAN. FAR-2xx7 and FAR-3xx0 series radars are not compatible.
• When a transmission error occurs between two radars in the dual radar mode, the
Alert "EXT RADAR COM ERROR" appears and the dual radar function is turned off.
• The dual radar display is not available on external equipment (such as ECDIS, etc)
which overlays the main radar image, even though the dual radar is turned on.
• If a TT target passes between the two radars (see page 1-107) while the dual radar
function is active, TT data (TTD/TTM) is shared and tracking is continued.
• If the Alert "TT TARGET 95%(AUTO)" is released while the dual radar function is
active, disable tracking for unnecessary targets until the Alert condition is rectified.
Continuing automatic acquisition after this Alert is released and is still active may
cause discrepancies between TT targets on the connected radars.
Restrictions during dual radar operations
The following restrictions are applicable when using the dual radar function.
• A REF (reference) mark can be entered on the display of the main radar but not the
external radar.
• Targets acquired and/or tracked prior to activating dual radar mode are all released
when dual radar mode is activated.
• Targets acquired and/or tracked prior to deactivating dual radar mode are all re-
leased when dual radar mode is deactivated.
• If either radar enters standby mode, all TT targets acquired while the Dual Radar
function was active are released (removed).
• TT targets can be acquired manually or automatically. TT target data sharing be-
tween the radar in dual radar mode is restricted to manually acquired targets. See
"TT information" on page 1-107.
• The reference position is fixed at [CCRP] (see section 1.50) when dual radar mode
is enabled. Set the same CCRP position between two radars at the time of installa-
tion.
• The following functions are not available in the dual radar mode.
• Performance monitor
• SART
• ICE mode
• Target Analyzer (B-type only)
• If the distance between the Own radar antenna and the External radar antenna is
larger than 125 meters, the dual radar display area and the sweep area are re-
duced. In this case, if the range is decreased, only the own radar echoes are dis-
played on the screen. Further, the following occurs when only the own radar is
shown under these circumstances:
• Dual radar boundary line is not shown.
• Antenna selection is unavailable (on-screen box and menu item are gray and inac-
tive).
• Trails are all cleared (removed).
No alerts is released under these circumstances, however normal dual radar display
is restored when the range is increased again.
1-110
• TT simulation mode
• Icing prevention
• Interswitch
• Hatching (B-type only)