Raymarine L1250D, Owner'S Handbook Manual

Page: 41 / 246

Chapter 2: Installation 2-9
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Sounder Module Mounting Location
The DSM250 is waterproof to CFR46 is and designed to be mounted either
above or below deck. The unit should be protected from physical damage and
excessive vibration.
WARNING:
Mount the DSM250 in a protected area away from prolonged exposure to
rain, salt spray, and direct sunlight, but well ventilated. Locate the
sounder as close to the transducer as possible. Raymarine suggests
not
locating the DSM250 on the main console.
CAUTION:
Do not mount the DSM250 in the engine compartment.
When planning the installation, the following should be considered to ensure
reliable and trouble free operation:
• Access: There must be sufficient space below the unit to enable cable con-
nections 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, generators, and radio
transmitter/receivers (see the EMC guidelines earlier in this section).
• Magnetic compass: Mount the unit at least 3 ft (1m) away from a mag-
netic 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 trans-
ducer 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 over-
heating.
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.
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