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Simrad ES38-18/200-18CR Installation Manual
Splicing the transducer cable
If you need to cut or lengthen the transducer cable, you must splice it correctly. This is
very important, as any splice is very vulnerable for noise.
Prerequisites
The following items are required.
• A metal junction box with cable glands designed for electromagnetic
compatibility (EMC). The junction box must contain a suitable terminal block. The
terminal block must provide solid fastening of the cable ends as well as sufficient
insulation between the wires.
• The necessary length of transducer cable.
The cable between the junction box and the transceiver must be supplied by
Kongsberg Maritime, and this must be the same type as used on the transducer.
Electrical installations can only be done by certified electricians. All necessary tools and
instruments required must be available. The installation shipyard must prepare detailed
drawings of the electrical system, and identify each cable.
You must be equipped with a standard set of tools. This tool set must comprise the
normal tools for electronic and electromechanical tasks. This includes different
screwdriver types, pliers, spanners, a cable stripper, a soldering iron etc. Each tool
must be provided in various sizes. We recommend that all tools are demagnetized to
protect your equipment.
Context
Do not solder the wires together with only electrical tape for insulation. This will result
in electrical noise and reduced operational performance.
Do not connect the cable screen to the vessel's ground.
Procedure
1
Mount the junction box in a suitable location.
2
Terminate the steel conduits containing the transducer cables as close to the junction
box as possible.
3
Verify that the junction box chassis is not connected to the vessel ground.
4
If required, use necessary insulation.
5
Remove the insulation on each transducer cable, and connect the individual
conductors to the terminal block.
6
Remove the insulation on each extension cable, and connect the individual
conductors to the terminal block.
7
Verify that you have connected the wires 1:1, and that the colours match.
8
Connect the cable screens to the cable glands in the junction box.
32
436200/A
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