9
Chapter 1: Overview
1.1 Introduction
This handbook describes how to operate the DSM300 Digital Sounder Module
with hsb
2
PLUS (Pathfinder) Series displays. The DSM300 emits and receives sonar
signals from a transducer mounted in the water, then interprets and transmits the
data to a separate hsb
2
PLUS (Pathfinder) Series display unit installed in your boat.
Figure 1-1: DSM300 Digital Sounder Module
The DSM300 employs a very high transmission repetition or “ping” rate which,
along with the digital adaptive high sample rate receiver, ensures that fish and
bottom structure are presented in superb detail and optimal color allocation. The
DSM300 digital bandwidth adaptation adjusts the receiver band width
dynamically from very wide to very narrow, as required by the actual water
conditions. This provides superior fish and bottom detection in all surroundings.
The DSM300 features dual frequency (200 kHz and 50 kHz) operation and—
depending on the transducer installed and conditions—up to 1000 watts RMS
output power and performance from 3 ft (1m) up to 5000 ft (1700 m).
Note:
Many illustrations in this handbook show example screens. The screen you see on
your display depends on your system configuration and set up options, so it may differ from
the illustration.
D7462-1
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