Display Unit Connections; Dc Power And Nmea Connection - Raymarine L1250DRC Owner's Handbook Manual

Chapter 2: Installation

2.7 Display Unit Connections

The rear of the HD Series LCD display provides the following connection
sockets:
• HSB, in/out connector for connecting to the DSM250 and additional
Plus Series displays (such as a chartplotter, radar, or second fishfinder dis-
play).
• NMEA Output, for NMEA data output in an integrated system.
• Power/NMEA Input, for 12 V, 24 V or 32 V DC power connection, two
NMEA 0183 inputs and one RF ground (screen) connection.
• Transducer connection, not used.
• SeaTalk, for SeaTalk data input and output and connecting to additional
Plus Series displays (such as a chartplotter, radar, or second fishfinder dis-
play).
Note: The 'Transducer' connector is not used with the HD Series Fishfinders.
The transducer is connected to the DSM250 sounder module.
Figure 2-8:
The following sections detail the display unit connectors used when installing
the LCD Display. The remaining connector details are provided in
Section 2.9.

DC Power and NMEA Connection

The HD Series Fishfinder is intended for use on ships' DC power systems
rated from 10.7 V to 32 V.
The power connection to the display 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 display via its
own dedicated cable system and MUST be protected by a thermal circuit
breaker or fuse, installed close to the power connection.
Use a 6 amp fuse for 12V systems or 4 amp fuse for 24/32V systems.
HD Series Fishfinder Display Connector Panel
2-15
hsb
2
D6264-1