Simrad ES60
Cable splicing
If you need to cut or lengthen the transducer cable, you must
splice it correctly. The cable between the junction box and the
transceiver must then be supplied by Simrad, and this must be
the same type as used on the transducer(s).
Note
Do n ot solder the wires together with only electrical tape for
insulation, as this will result in electrical noise and reduced
operational performance.
To splice the cable, use a metal junction box with EMC cable
glands and a terminal block. The terminal block must provide
solid fastening of the cable ends as well as sufficient insulation
between the wires.
Note
We recommend that the cable screen is connected to the junction
box chassis using the EMC cable glands, but if you do this, the
junction box chassis m
ust not be connected to ship’s ground.
Thecablescreenm
ust not be connected to the ship’s ground
through the junction box.
Steel conduit
It is strongly recommended to lay a steel conduit from the
transducer’s cable gland to the echo sounder transceiver, and to
pull the transducer cable through this conduit. There are two
reasons for this.
• First, it will make it easier at a later stage to replace the
transducer.
• Second, noise and interference from other electrical equipment
is greatly reduced.
With a steel conduit the installation will satisfy the EU
regulations for EMC interference. Without a steel conduit, there
is a risk of reduced echo sounder performance.
The s teel conduit must be unbroken and watertight from the
transducer to above the water line. From there, the cable can
be pulled further, or a junction box can be installed to facilitate
further c onnections. Note that the steel conduit must act as
a c ontinuous electrical screen all the way. To ensure proper
shielding, the conduit must be electrically connected to the echo
sounder transceiver chassis.
Steel conduit dimensions:
• minimum 35 mm inner diameter
140
304699/A
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