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2. RADAR, CHART RADAR OPERATION
2-41
Antenna selection considerations
• An antenna unit cannot be controlled from multiple display units. Select one Master
display unit for one antenna unit. If two antenna units are set as masters, the display
last-set as master becomes the master and all other displays are automatically
changed to slave.
• An antenna unit without a Master display cannot be selected on the sub display
units. If there is no antenna unit set as master, the lowest number display is auto-
matically set as master.
• Radar functions are controlled independently, dependently or commonly depending
on selection as Master or Slave.
• If the Alert 750 “EXT Radar COM Error” appears, do one of the following as appli-
cable:
• If only your antenna is not displayed on the [ANT SELECT] display, the LAN line
in the Processor Unit may be faulty. In this case, use the standalone mode.
• If the antenna that was in use does not appear on the [ANT SELECT] display, the
LAN line in other Processor Unit may be faulty. In this case, see the preceding
page for how to select a different antenna unit.
• When the Network fails, the Interswitch does not work, but standalone operation is
possible.
Radar Functions Control Master Display Option Slave Display Option
AIS function
Brilliance
Echo trails
EBL
Lat/long data
Presentation mode
Speed data
TT, AIS on/off
TT, AIS track interval
Vector mode
Vector time
VRM
Range
Reference Point
(Sampling at Master)
A/C SEA
A/C RAIN
Auto Rain
Gain
Echo stretch
Echo averaging
ER
Picture setting
STBY/TX
Tuning
TT Lost alert
TT CPA/TCPA alert
TT ALARM ACK
TT acquire
TT/AIS AZ
Independent
Independent
Independent
Independent
Independent
Independent
Independent
Independent
Independent
Independent
Independent
Independent
Independent
Independent
Dependent control
Dependent control
Dependent control
Dependent control
Dependent control
Dependent control
Dependent control
Dependent control
Dependent control
Dependent control
Dependent control
Common control
Common control
Common control
Common control
Common control
Desired value can be set
Desired value can be set
Desired value can be set
Desired value can be set
Desired value can be set
Desired value can be set
Desired value can be set
Desired value can be set
Desired value can be set
Desired value can be set
Desired value can be set
Desired value can be set
Desired value can be set
Desired value can be set
Echo sampling at master
range)
Desired value can be set
Desired value can be set
Desired value can be set
Desired value can be set
Desired value can be set
Desired value can be set
Desired value can be set
Desired value can be set
Desired value can be set
Desired value can be set
Item commonly controlled
Item commonly controlled
Item commonly controlled
Item commonly controlled
Item commonly controlled
Desired value can be set
Desired value can be set
Desired value can be set
Desired value can be set
Desired value can be set
Desired value can be set
Desired value can be set
Desired value can be set
Desired value can be set
Desired value can be set
Desired value can be set
Desired value can be set
Desired value can be set
Desired value can be set
Cannot control
Cannot control
Cannot control
Cannot control
Cannot control
Cannot control
Cannot control
Cannot control
Cannot control
Cannot control
ltem commonly controlled
Item commonly controlled
Item commonly controlled
Item commonly controlled
Item commonly controlled