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Reducing propeller noise
The transducer must be installed as far away from the propellers as possible. Sufficient
clearance between the propellers and the hull, the rudder and the keel must be provided.
Place the sacrificial anodes in places where the water flow is the least disturbed.
Ensure that the propellers blades are correctly designed and without damages. The use of
a baffle between the propellers and the transducer may reduce noise appreciably. Static
discharges caused by the rotating propeller shaft may be removed by proper grounding or
by mounting a coal brush from the shaft to vessel ground.
Reducing rattle noise
Ensure that no parts near the transducers can rattle as a result of water flow or vibrations.
Reducing interference
Interference from the transmission pulses from other hydroacoustic instruments on board
the vessel is difficult to avoid. The problem may be reduced by choosing the working
frequencies carefully and to some extent by separating the different transducers. On vessels
with a large number of separate hydroacoustic systems installed and in simultaneous use, a
separate synchronizing system (for example the K-Sync) should be considered.
Reducing electrical noise
These points must all be considered to reduce electrical noise on an CP200-5C system.
• Place the transducer cables in a metal conduit all the way from the transducer to the
transceiver. Terminate the conduit as close to the transducer and transceiver as possible.
• Make sure that the transducer cables are completely separated from other cables, boxes,
other potential noise sources.
• Make sure that all units are properly grounded.
• Use shielded cables with correct grounding.
• Separate the cables used by the CP200-5C system from other cables with high voltages,
large currents or transients. Place all high voltage power cables in metal conduits.
• If you more than one Wide Band Transceiver (WBT), install these in such a way that the
transducer cables have the maximum distance to the power and Ethernet cables.
• Ensure maximum physical distance between the transceiver and the power supply.
• Ensure maximum physical distance between each power supply.
• If possible, install the transceivers in a sonar room that is electrically shielded.
Simrad CP200-5C Installation Manual
Summary of Contents for Simrad CP200-5C
Page 1: ...Photo by Gatis Marcinkevics kongsberg com simrad Simrad CP200 5C INSTALLATION MANUAL ...
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Page 55: ...484164 A 53 Related topics Preparations page 22 Acoustic noise page 45 Preparations ...
Page 58: ...56 484164 A Related topics Preparations page 22 Simrad CP200 5C Installation Manual ...
Page 101: ...484164 A 99 Drawing file ...
Page 110: ... 2022 Kongsberg Maritime ...