Ultrasonic Speed/Temperature Transducer; Dc Power Connection - Raymarine DSM400 Installation Manual

2.5 Ultrasonic speed/temperature trans-
ducer
If you are installing a separate ultrasonic speed/temperature
transducer, you should connect it to the sounder unit as shown
in the following diagram:
3
Br Gr Wh
Red
White
Green
Screen and brown
System and transducer connections
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Re
G T˚ Id
Positive
Temperature
Speed signal
Negative

2.6 DC power connection

WARNING: Power supply
Make sure the boat's power supply is set to OFF
before starting to install this product. Unless
stated otherwise only connect or disconnect
this equipment with the power supply set to
OFF.
Your DSM400 Digital Sounder Module is intended for use on DC
power systems rated from 10.7 V to 32V.
The power connection to the sounder unit should be made at
either the output of the battery isolator switch or at a DC power
distribution panel. Power should be fed directly to the sounder
unit on a dedicated cable system and protected by a 5 amp
thermal circuit breaker or quick-blow 10 amp fuse installed in the
red ((positive) wire. The thermal circuit breaker or fuse should be
connected as close to the power connection as possible.
There is no power switch on your sounder unit. The unit is
powered when the power cord is attached to the boat's power
Locate the unit so that the power cord can be accessed and
removed easily if necessary. If this is not possible, Raymarine
strongly recommend that an ON/OFF switch is installed in the
power cord where it can be easily accessed.
The DC power connections are shown in the following drawing:
21