1
Installation
9
Chapter 1: Installation
1.1 Introduction
This chapter deals with the installation of the DSM400
Digital Sounder Module and covers the following:
Connections to the unit are dealt with in “System and
transducer connections” on page 17.
1.2 EMC installation guidelines
All Raymarine equipment and accessories are designed
to the best industry standards for use in the recreational
marine environment.
Their design and manufacture conforms to the
appropriate Electromagnetic Compatibility (EMC)
standards, but correct installation is required to ensure
that performance is not compromised. Although every
effort has been taken to ensure that they will perform
under all conditions. It is important to understand what
factors could affect the operation of the equipment.
The guidelines given here describe the conditions for
optimum EMC performance, but it is recognized that it
may not be possible to meet all of these conditions in all
situations. To ensure the best possible conditions for
EMC performance within the constraints imposed by any
location, always ensure the maximum separation
possible between different items of electrical equipment.
•
Place equipment at least 5ft (1.5 m) from any
equipment transmitting or cables carrying radio
signals, e.g. VHF radios, cables and antennas. In
the case of SSB radios, the distance should be
increased to 7ft (2 m).
•
Place equipment more than 7ft (2 m) from the path
of a radar beam. A radar beam can normally be
assumed to spread 20 degrees above and below
the radiating element.
•
The equipment is supplied from a separate battery
from that used for engine start. Voltage drops below
10 V and starter motor transients can cause the
equipment to reset. This will not damage the
•
EMC installation
guidelines
- refer to page 9
•
Planning the installation
- refer to
page 12
•
What’s in the box
- refer to
page 13
•
Installing the unit
- refer to
page 13
•
Cable runs
- refer to
page 14
•
Extending cables
- refer to
page 15
DSM400 Installation Guide.book Page 9 Tuesday, November 4, 2008 4:53 PM
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