Kongsberg EA640, Installation Manual

Page: 51 / 94

413764/B
51
Installing the EA640 cables
Topics
Connecting one or more transducers to the WBT, page 51
Connecting power and ground to the WBT, page 55
Connecting the WBT and the Operator Station, page 56
Connecting a synchronization cable to the Operator Station using an RS-232 serial
interfaces, page 56
Connecting one or more transducers to the WBT
Depending on your operational requirements for the EA640, one or more transducers
must be connected to the WBT.
Prerequisites
It is strongly recommended to lay a steel conduit from the cable gland above the
transducer to the EA640 transceiver, and to pull the transducer cable through this conduit.
There are several reasons for this.
• It will make it easier at a later stage to replace the transducer.
• It will protect the cables.
• Noise and interference from other electrical equipment is greatly reduced.
• The risk of flooding is greatly reduced when the steel conduit is terminated above
the water line.
With a steel conduit the installation will satisfy the European Union regulations for
electromagnetic compatibility (EMC) interference. Without a steel conduit, there is a
risk of reduced EA640 performance.
Context
The WBT used by the Kongsberg EA640 can be set up to work with maximum four -4-
operational frequencies. This means that you can use four single frequency/single beam
transducers or two dual frequency transducers.
The transducer is connected to a terminal block under a panel plate on the rear of the
WBT. The connectors are a part of the WBT delivery.
Cable layout and interconnections