General - Raymarine DSM250 Owner's Handbook Manual

1-4

General

Transducer
• Transducer detection. For safety reasons, if the transducer is
disconnected and then reconnected while the sounder is powered
on, the DSM250 does not detect that the transducer has been re-
attached. In this case, you must power down the DSM250, recon-
nect the transducer cable, and then power the sounder module
back on before it operates properly.
• Status LED. The LED on the connector panel provides valuable
status information. The LED blinks green while the module is
operating normally. If the unit detects a problem, the LED blinks
amber to indicate a warning or red for an error. The number of
times the LED blinks is a code representing the nature of the prob-
lem. Refer to Status LED on page 7-6.
The DSM250 system, illustrated below, is comprised of the Dig-
ital Sounder Module, an
finder display unit, transducer, and associated cables.
Digital Sounder Module
Figure 1-2: Basic Echosounder System using the DSM250
The DSM250 module is waterproof to CFR46 and can be installed
either above or below deck.
The unit includes connections to:
• power
• the transducer
• the display unit, via
• ground
DSM250 Digital Sounder Module
PLUS Radar, Chartplotter, or Fish-
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2
2
hsb
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2
2
hsb PLUS Display Unit
D6160-1