18 |
Installation |
Halo20, 20+ and 24 Dome Radars Installation Manual
Power connection
The unit is designed to be powered by a 12 or 24 V DC system. It is protected against reverse
polarity, under voltage, and over voltage (for a limited duration of time).
A fuse should be fitted to the positive supply, for recommended fuse rating refer to “Technical
specifications” on page 27.
¼
Note:
Connection via a switch panel and main isolator switch is assumed. Wiring directly to a
vessels battery bank is not recommended.
The shield (bare wire) can be insulated from all other wires.
If interference is encountered from other on board electronics, the screen can be connected
to a vessel hull ground to help reduce any interference, but it is not generally required.
A B
E
F
C
D
Key
Color
Description
A
Black
DC negative
B
Red
+12/24 V DC
C
Yellow
Power control wire
D
--
Shield
E
--
Data cable
F
--
Interconnection cable to scanner
Recommended wire gauges for extending power wire length for a 12 V system:
Extension wiring length
2 m
(6.56 ft)
5 m
(16.40 ft)
10 m
(32.80 ft)
20 m
(65.61 ft)
30 m
(98.42 ft)
5 m
(16.40 ft)
16
16
16
16
14
10 m
(32.80 ft)
16
16
14
12
20 m
(65.61 ft)
16
16
14
12
30 m
(98.42 ft)
14
12
8
6
5 m
(16.40 ft)
1.00
1.00
1.00
1.00
2.50
10 m
(32.80 ft)
1.00
1.00
2.50
4.00
20 m
(65.61 ft)
1.00
1.00
2.50
4.00
30 m
(98.42 ft)
2.50
4.00
10.00
16.00
In
ter
connec
tion c
able length
M
in. A
W
G
M
in. C
ross-sec
tion
(mm2)
Summary of Contents for Halo20
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