Raymarine RA1072HD, Руководство по установке

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battery isolator switch/DC distribution panel to the VCM100. Do not
exceed these lengths as unreliable operation may result.
Note: If the required extensions result in unacceptably large diameter
cables, use two or more smaller gauge wires to achieve the
required copper wire cross-section. For example, using two pairs of
2 mm
2
is equivalent to using two single 4.0 mm
2
cables.
Voltage Converter Module (VCM100)
The VCM100 is exclusively used to convert the ships supply,
nominally operating at ranges from 12 to 24 V with a higher voltage
output of 42 V to the digital radar. The unit is a below decks unit only
and is designed to be splash-proof only!
The digital radar can ONLY be powered in conjunction with the
VCM100.
For multiple digital radar systems, use only one VCM100 per digital
radar.
Power in
Power from the battery isolator/DC distribution panel goes to the
‘POWER IN’ port, making sure to use the screen port to effectively
ground the radar (
see Grounding the digital radar system
on
page 23
).
Table 1-2:
*Max total distance from
power supply to Voltage
Converter Module
(VCM100)
AWG (American Wire
Gauge)
11 10 8 7
Maximum distance (12 V
supply)
6.0 M
(19.6 ft.)
8.0 M
(26.2 ft.)
10.0 M
(32.8 ft.)
15.0 M
(49.2 ft.)
Maximum distance (24V
supply)
24.0 M
(78.7 ft.)
32.0 M
(104.9 ft.)
40.0 M
(131.2 ft.)
55.0 M
(180.4 ft.)