Dsm250 Connections; Dc Power Connection - Raymarine L1250DRC Owner's Handbook Manual

Chapter 2: Installation

2.8 DSM250 Connections

The DSM250's connector panel contains the following sockets:
• Transducer connection.
• Ground connection.
• Power, for 12 V, 24 V, or 32 V DC power connection and one RF ground
(screen) connection.
• HSB, in/out connector for connecting to the HD Series display.
Figure 2-11: DSM250 Connector Panel
The following sections detail the connectors used when installing the
DSM250.

DC Power Connection

The DSM250 is intended for use on ships' DC power systems rated from 10.7
V to 32 V.
The power connection to the unit should be made at either the output of the
battery isolator switch or at a DC power distribution panel. Raymarine
recommends that power is fed directly to the DSM250 via its own dedicated
cable system and MUST be protected by a thermal circuit breaker or 8A fuse
on the red (positive) wire, installed close to the power connection.
A 10 ft (3 m) power cable is supplied for connecting the ship's DC power to the
unit. The power cable may be extended by up to 60 ft (20 m) using a wire
gauge of AWG 12 or greater.
DC power is connected at the three-pin POWER connector on the unit's
connector panel. The connector (viewed from the outside) and pin functions
are shown in the following diagram and table.
2-19
D6161-1