432-0003-00-12 Rev 140 — M-Series Installation Guide 15
Installing M-Series Systems
Proper Grounding
Caution: Ensure the camera is properly grounded. Following best grounding
practices, the camera chassis ground should use the lowest resistance path
possible.
The green wire in the camera cable can be used to provide chassis ground for
cable lengths under 2 m (6 ft). For longer cabling, the camera must be connected
to a vessel ground using a low-resistance grounding strap connected directly to
one of the M6 mounting bolts on the camera base as shown in the M-Series ICD
(432-0003-00).
Failure to provide this connection may result in electrical interference between
camera and other shipboard electronic systems. Furthermore, it is recommended
that a bonded grounding scheme is used with a common ground between the
chassis ground and electrical return, with the connection made as close as
possible to the negative terminal of the battery.
Connecting Power
The camera itself does not have an on/off switch. Generally the M-Series camera
will be connected to a circuit breaker and the circuit breaker will be used to apply
or remove power to the camera. When power is supplied, the camera will be in
one of three modes: Booting Up. Standby, or Powered On. The M-Series
Operator’s Manual has detailed information about powering and operating the
camera.
Consider installing a fuse in line with the power connection to protect the camera
from power surge or short circuit. Table 1.2 applies to both 12V and 24V
operation.
The installer must use power cable wires that are sufficient size gauge or
diameter for the supply voltage and total load (camera and length of cable run), to
ensure proper supply voltage at the camera and adequate current carrying
capacity. Table 1.3 lists recommended wire size for various cable lengths.
TABLE 1.2 Fuse Recommendations
Model Fuse
M-324L, M-625L, M-612L, M-618CS 5 amp
M-324XP, M-625XP 3 amp
TABLE 1.3 Power Cable Wire Gauge Recommendation
Length in Meters (Feet)
Wire Gauge (AWG)
for 12V Supply
Wire Gauge (AWG)
for 24V Supply
8 (25) 16 18
16 (50) 14 18
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