Raymarine DSM250, Owner'S Handbook Manual

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Chapter 2: Installation 2-5
CAUTION:
Do not mount the DSM250 in the engine compartment.
When planning the installation, the following should be consid-
ered to ensure reliable and trouble free operation:
• Access: There must be sufficient space below the unit to enable
cable connections to the panel connectors, avoiding tight bends in
the cable.
• Interference: The selected location should be far enough away
from devices that may cause interference, such as motors, genera-
tors, and radio transmitter/receivers (see the EMC guidelines ear-
lier in this section).
• Magnetic compass: Mount the unit at least 3 ft (1m) away from a
magnetic compass.
• Cable runs: The unit must be located near a DC power source.
The power cable supplied is 10 ft (3 m), but a longer cable can be
used if desired. Refer to
Section 2.4 .
The maximum length of cable between the sounder module and
the transducer unit should not normally exceed 30 ft (10 m). If
you need to use a longer cable, refer to
Section 2.4.
• Environment: Good ventilation is required to prevent the unit
from overheating.
CAUTION:
Removal of the transducer cable from the DSM250 while
power is turned on can cause sparks. As with any electronic
device, be sure the sounder module is mounted where it is well
ventilated and free from gasoline fumes.
2.4 Cable Runs
Consider the following before installing the system cables:
• You will need to attach the power, transducer, and HSB cables.
Additional cables will be required if you are installing an inte-
grated system.
• All cables should be adequately secured, protected from physical
damage, and protected from exposure to heat.
Avoid running cables through bilges or doorways, or close to
moving or hot objects.
• Sharp bends must be avoided.