Foreword - Furuno CH-250 Operator's Manual

FOREWORD

Thank you for purchasing the CH-250/CH-250S Color LCD Searchlight Sonar. We are confident
you will discover why FURUNO has become synonymous with quality and reliability.
Dedicated in the design and manufacture of marine electronics equipment for half a century,
FURUNO Electric Company has gained an unrivaled reputation as a world leader in the industry.
This is the result of our technical excellence as well as our worldwide distribution and service
network.
Please carefully read and follow the safety information and operating and maintenance
instructions set forth in this manual before attempting to operate the equipment and conduct any
maintenance. Your sonar will perform to the utmost of its ability only if it is operated and
maintained in accordance with the correct procedures.
Features
The CH-250/CH-250S displays underwater objects on a bright 10.4" color LCD display, in 8 or
16 colors according to received echo strengths. Operating frequency is selectable among 60, 88
and 150 kHz for CH-250 and 180 and 240 kHz for CH-250S. Eight operating modes provide
information for virtually any fishing application.
The main features of the CH-250/CH-250S are
•
High definition active matrix color LCD.
•
Target lock on a fish school or stationary position (reef, etc.).
•
Audible detection of echoes frees the operator from continuous watch of the display.
•
Compact display and hull units permit installation where space is limited.
•
Interface IF-8000 permits use of a commercial monitor instead of standard display unit.
•
Automatic pulselength switching for optimum performance in short and long ranges.
•
Eight operational modes: Horizontal, Expanded Horizontal, Vertical Fan, Echo Sounder,
Horizontal/Vertical Fan, History, Video Plotter and Strata.
•
Automatic retraction of transducer at operator-selected ship's speed between 5 and 15 knots.
•
CUSTOM MODE keys provide one-touch setup of the equipment or short-cut key function.
•
Tracing of ship's track with connection of position-fixing equipment (GPS, etc.).
•
One of the echo strengths may be displayed in white to enhance the specific echo level.
•
The "Vertical Search" feature provides a cross-sectional view of the vertical plane, which is
useful for evaluating fish school concentration.
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