20
documentation, display upgrade procedure booklet 81299, or go
online at www.raymarine.com.
Power
To extend the power cable (
see
Table 1-2:, p.21
for maximum
extension lengths
), use a splash proof junction box. The junction
box should provide a terminal strip with sufficient space for power
connections. The terminal strip should be a minimum of 20 Amp
rating for power cores. It is essential that both power cores and the
screen are connected and that the connection is of very low
resistance as considerable power passes through this connection.
CAUTION:
The digital radar connector at one end of the cable is a moulded
plug that should not be removed. DO NOT remove this moulded
plug.
1.8 Power requirements
The digital radar system is intended for use on ships’ DC power
systems operating from 12 to 24 Volts DC.
12 V and 24 V systems
Extensions to the supplied power cable should be kept to the
minimum length possible. Raymarine recommends that the power
should be fed directly from the output of the battery isolator switch
or DC distribution panel via its own dedicated cable system to the
VCM100. It is also recommended that no additional power switch is
included in this power cable.
All power connections must be of high quality to minimize their re-
sistance and to remove the risk of accidental shorts. Recommended
total power cable lengths and gauges are given in the table below.
These figures relate to the maximum distance of cables from the
Summary of Contents for RA1072HD
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