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FOREWORD
Foreword
Thank you for purchasing the FURUNO DS-85 Doppler Speed Log. We are confident you will dis-
cover why FURUNO has become synonymous with quality and reliability.
Since 1948, FURUNO Electric Company has enjoyed an enviable reputation for innovative and
dependable marine electronics equipment. This dedication to excellence is furthered by our ex-
tensive global network of agents and dealers.
Please carefully read and follow the safety information and operating and maintenance instruc-
tions set forth in this manual before attempting to operate the equipment and conduct any main-
tenance. 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-85 displays ship’s speed relative to water, using the Doppler effect; ship’s
speed is measured by detecting the Doppler shift frequency from the signal returned from the wa-
ter mass.
The output is interfaced with ARPA, AIS, and other shipborne equipment, in IEC 61161-1/-2-450
format.
The main features of the DS-85 are:
•
Measures ship’s speed through the water.
•
Pair-beam system effectively reduces error caused by pitching. The transducer assembly sym-
metrically emits two sonic beams, one fore and the other aft. By averaging the Doppler shift
in
bot
h directions accurate speed data is available under rough sea conditions.
•
Speed and distance information on the LCD display.
•
When the speed measurement is abnormal, the speed value from a navigation de
vice can be
di
splayed.
•
Conforms to the following standards: IMO A.824(19), as amended by MSC.97
(72), IMO
A.694
(17), IEC 61023 Ed. 3, IEC 60945 Ed.4, IEC 61162-1 Ed.5, IEC 61162-1 450 Ed
.2, IEC
611
62-2 Ed.1, IEC 62288 Ed.2, IEC 62923-1 Ed.1, EC 62923-2 Ed.1.
Program numbers
“xx” denotes minor version number.
Unit Prog. No.
Display Unit
(DS-8500)
6550304-01.xx
Distributor Unit
(DS-8510)
6550308-01.xx
Transceiver Unit
(DS-8520)
6550313-01.xx
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