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FOREWORD
Foreword
Thank you for purchasing the FURUNO
DS-80 Doppler Speed Log. 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 Doppler
speed log will perform to the utmost of its
ability only if it is operated and maintained
in accordance with the correct procedures.
This equipment is designed, produced and
documented by FURUNO Electric Co., Ltd.,
complying with ISO 9001 standards as
certified by the Lloyd’s Register of Quality
Assurance System.
Features
The FURUNO DS-80 displays ship’s speed
relative to water, using the Doppler
principle; ship’s speed is measured by
detecting the Doppler shift frequency from
the signal returned from the watermass.
The output is interfaced with ARPA, AIS,
and other shipborne equipment in IEC
61162-1 format.
The main features of the DS-80 are
• Simple operation. In most cases all that
is required to display ship’s speed is to
turn on the equipment.
• Pair-beam system effectively reduces
error caused by pitching. The transducer
assembly symmetrically emits two sonic
beams, one fore and the other aft. By
averaging the Doppler shift in both
directions accurate speed data is
available under rough sea conditions.
• Speed and distance information on the
adjustable-contrast LCD display.
• Analog display, digital Indicator and
digital distance indicator display
optionally available.
• Conforms to the following standards: IMO
A.824(19), as amended by MSC.97(72),
IMO A.694(17), IEC 61023, IEC 60945
(3
rd
edition), IEC 61162-1 (2
nd
edition)..