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4) Place the scanner unit on the rubber mat orienting the unit so the bow mark on its base is
facing the ship’s bow.
Ground
terminal
Rubber
mat
Bow mark
Figure 1-4 Scanner unit, front view
5) Fasten the scanner unit to the mounting platform with M12x60 hex bolts, nuts, flat washers
and seal washers.
6) Using hex bolt (M6x25), nut (M6) and flat washer (M6) establish the ground system on the
mounting platform as shown in Figure 1-5. The location should be within 370 mm of the
ground terminal on the scanner unit. Connect the ground wire (RW-4747, 370 mm, sup-
plied) between the grounding point and ground terminal on the scanner unit. Coat the entire
ground system with silicone sealant (supplied).
Anticorrosive sealant
Seal washer
Rubber mat
Anticorrosive
sealant
Ground wire
Hex bolt
Hex bolt welded to
ship’s superstructure
Hex nut
Hex nut
Spring washer
Spring washer
Spring washer
OR
Anticorrosive
sealant
Flat washer
Anticorrosive sealant
Ground
terminal
Ground
wire
Antenna base
Ground wire
Ground the equipment to
prevent electrical shock
and mutual interference.
CAUTION
Figure 1-5 Fastening the antenna unit to the mounting location