Furuno DS-80 User Manual

DOPPLER SPEED LOG

Marine Speed and Distance Measuring Equipment (SDME)

DS-80

9-52 Ashihara-cho,9-52 Ashihara-cho,

A

A

*00080889601**00080889601*

*00080889601**00080889601*

*OME72470M10**OME72470M10*

Nishinomiya, JapanNishinomiya, Japan

Telephone :Telephone : [phone]-65-2111
Telefax :Telefax : 0798-65-42000798-65-4200

ll rights reserved.

ll rights reserved.

PUB.No.PUB.No. OME-72470OME-72470

Printed in JapanPrinted in Japan

Your Local Agent/DealerYour Local Agent/Dealer

IRST EDITION :

IRST EDITION : FEB.FEB. 20002000

M1M1 :: FEB.FEB. 12,200312,2003

(( DAMIDAMI ))

DS-80DS-80

* 0 0 0 8 0 8 8 9 6 0 1 ** 0 0 0 8 0 8 8 9 6 0 1 *

*OME72470M10**OME72470M10*

* O M E 7 2 4 7 0 M 1 ** O M E 7 2 4 7 0 M 1 *

SAFETY INSTRUCTIONS

WARNING

ELECTRICAL SHOCK HAZARD

Do not open the equipment.

Only qualified personnel
should work inside the
equipment.

Immediately turn off the power at the
switchboard if water leaks into the
equipment or an object is dropped into
the equipment.

Continued use of the equipment can cause
fire or electrical shock. Contact a FURUNO
agent for service.

Do not place liquid-filled containers on
the top of the equipment.

Fire or electrical shock can result if the
liquid spills into the equipment.

Do not disassemble or modify the
equipment.

CAUTION

Do not use the equipment for other than
its intended purpose.

Improper use of the equipment can result
in personal injury or equipment damage.

Turn off the equipment immediately if
you feel it is abnormal.

Turn off the power from the switchboard if
the equipment is emitting strange noises
or becomes excessively hot. Contact your
dealer for advice.

The useable ambient temperature range
is 15

°

C to 55°C.

Do not use the equipment out of the
above temperature range.

Do not place objects around the
equipment.

Overheating may result.

Fire, electrical shock or serious injury can
result.

Keep the equipment away from rain
and water splash.

Fire or electrical shock can result if the
rain or water gets into the equipment.

Do not operate the equipment with wet
hands.

Electrical shock can result.

Keep heater away from equipment.

A heater can melt the equipment's power
cord, which can cause fire or electrical
shock.

Use the proper fuse.

Fuse rating is shown on the equipment.
Use of a wrong fuse can result in damage
to the equipment.

Do not power the equipment when the
transducer is in air.

The transducer may become damaged.

Handle all units carefully.

Damage can lead to corrosion.

Do not use chemical cleaners such as
alcohol, acetone and benzine to clean
the equipment.

Chemical cleaners can remove paint and
markings. Use only a soft, dry cloth. For
stubborn dirt, use a soft cloth moistened
with water-diluted mild detergent.

When dry docked remove marine life
from the transducer.

Remove marine life to maintain good
sensitivity.

Do not paint the transducer face.
Further, handle the transducer with
care.

Paint will affect equipment performance.

i

WARNING LABEL
A warning label is attached to the
Distributor, Transceiver and Terminal
Box. Do not remove the labels. If a
label is missing or is illegible, contact
a FURUNO dealer or agent about
replacement.

WARNING

To avoid electrical shock, do not
remove cover. No user-serviceable
parts inside.

Name: Warning Label (1)
Type: 86-003-1011-0
Code No.: 100-236-230

RECORD OF MODIFICATIONS IN THIS OPERATOR’S MANUAL

Pub No. Software (Prog. No.)

Publicized for submission to type
test BSH
Apr/2000
Publicized for submission to type
test BSH
June/2000

03I-02J-02K
(DS-800, DS-801,
DS-810)
6550100003I (DS-800)
6550110003J (DS-801)
6550120003K

(DS-810)
Modified to conform to IEC
61162-1 Edition 2
2002/4

DS-800: 6550100004

DS-801: 6550110003

DS-810: 6550120003

Outline of changes in
Operator’s Manual

ii

TABLE OF CONTENTS

SPECIFICATIONS .......................SP-1

FOREWORD...................................... 1

SYSTEM CONFIGURATION............. 2

PRINCIPLE OF OPERATION............ 3

REMARKS ON USAGE..................... 4

1 OPERATION OF DISPLAY UNIT . 5

1.1 Controls........................................... 5

1.2 Turning the Power On/Off................ 5

1.3 Adjusting Contrast, Panel Dimmer... 6

1.4 Selecting a Display.......................... 6

1.5 Main Menu Operation...................... 7

1.6 Distance Run Operation.................. 7

1.7 System Setting ................................ 9

1.8 Demonstration Mode...................... 11

2 OPERATION OF OPTIONAL

EQUIPMENT ..............................12

2.1 Digital Indicator DS-830, Distance

Indicator DS-840............................12

3 MAINTENANCE,

TROUBLESHOOTING................14

3.1 Maintenance.................................. 14

3.2 Troubleshooting ............................. 15

3.3 Diagnostics, Checking

Program Number ...........................16

4 DIGITAL INTERFACE

(IEC 61162-1 Edition 2)..............17

4.1 I/O Sentences ................................ 17

4.2 Sentence Description..................... 20

5 PARTS LOCATION AND

PARTS LIST................................23

Parts Location......................................23

Parts List..............................................25

CALIBRATION SHEET....................29

MENU OVERVIEW..........................30

INDEX..................................... Index-1

Declaration of conformity

iii

This page is intentionally left blank .

SPECIFICATIONS OF THE DOPPLER SPEED LOG

DS-80

1. GENERAL
(1) Speed Range Fore-Aft: -10.0 to +40 knots through-the-water
(2) Distance Run 0.00 to 999,999.99 nautical miles through-the-water
(3) Working Depth Water depth greater than 3 m beneath the keel.
(4) Worki ng Frequency 1 .0 MHz
(5) Speed Accuracy 1.0% or 0.1 knots whichever is the greater
(6) Distance Accuracy 1.0% or 0.1 nm whichever is the greater
Note : Accuracy is subject to shallow water effects, to the effect of wind , current and tide, and

sensor location. Any ultrasonic equipment having the same frequency may interfere with
speed measurement. The Doppler Log transducer should be installed apart from the
transducers of such kind of equipment.

2. DISPLAY UNIT
(1) Display Character size 15 or 21 mm H on monochrome LCD
(2) Indication

Ship’s speed Fore: c**.* knots (+40.0 kt ma x.)
Aft: d**.* knots (-10.0 kt max.)
Distance run ******.** nm

(3) Other Function Diagnostic check

3. DIGITAL INTERFACE
(1) Serial Signal

Output: 2 ports; VBW, VLW in IEC 61162-1 (NMEA 0183 Ver 2.0)
Input: 1 port; IEC 61162 (NMEA 0183 Ver 2.0)

(2) Analog Signal Speed signal for Analog display: 2 port

-3.3 mA to 10 mA/ -10 kt to +30 kt
Analog curr e nt ou tp ut: 1 por t
4 mA to 20 mA/ -10 kt to 30 kt
Analog voltage output: 1 port

-3.3 V to 10 V/ -10 kt to 30 kt

(3) Distance run output 2 ports; Contact closure each 0.005 nm, forward speed,

30 VDC: 0.4 A

(4) System Check signal 1 port, 30 VDC: 0.2 A, default: closed

SP - 1

4. POWER SUPPLY
(1) System Sourc e 100/110 /1 15/200/220/ 23 0 VAC : 1.5 / 0. 7 A max ., 1 phase, 50-60 Hz

5. ENVIRONMENTAL CONDITION (IEC 60945)
(1) Ambient Temperature -15°C to +55°C (units for protected area)

Analog display: 0°C to +50°C
(2) Relative Humidity 95% at 40°C
(3) Vibration IEC 60945 adopted
(4) Category o f Equipment

Display Unit/Distance indicator/Transceiver Unit:

For protected area

Transducer: For submerged use, 600 kPa x 12 h

Distributor/Terminal box: For protected area

6. COATING COLOR
(1) Display Unit Cover: Munsell 2.5GY5/1.5 (light gray), Panel: N3.0 (gray)
(2) Distribution Box Munsell 2.5GY5/1.5 (light gray)
(3) Transceiver Unit Munsell 2.5GY5/1.5 (light gray)
(4) Terminal Box Munsell 2.5GY5/1.5 (light gray)
(5) Analog Display Munsell 2.5GY5/1.5 (light gray)

7. COMPASS SAFE DISTANCE
(1) Display Unit/Digital Indicator/Digital Distance Indicator

Stan dard: 0.50 m, St eering: 0.40 m
(2) Transceiver Unit Standard: 2.05 m, Steering: 1.40 m
(3) Distribution Box Standard: 3.1 0 m, Steering: 2.10 m
(4) Terminal Box Standard: 0.6 5 m, Steering: 0.45 m

SAFETY PREC AUTION

- There is no unit gi vi n g ris e to a dose rate > 0.5 mrem/h at 50 mm.

- There is no harmful radiation from the screen.

- All units of this equipment comply with EMC requirements in IEC 60945, as required by IMO

Res. A.813 (19).

SP - 2

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 Electr ic 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 safet y
information and operating and maintenance
instructions set forth in this manual bef ore
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 f r om
the signal returned from the watermass.

The output is interfaced with ARPA, AIS,
and other shipborne equipm ent 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

rd

(3

edition), IEC 61162-1 (2nd edition)..

1

TERMINAL BOX

DS-802

SYSTEM CONFIGURATION

DISPLAY UNIT
DS-800

DIMMER MF-22L-1/MF-22L-2

IEC 61162-1 Input

DISTRIBUTION BOX

JUNCTION BOX

CI-630

TRANSCEIVER

UNIT DS-810

TRANSDUCER

DS-801

RANGE SWITCH BOX

DS-389

DS-820

DIMMER MF22L-1/MF22-2

TERMINAL BOX

DS-802

DIMMER MF-22L-1/MF-22-2

ANALOG DISPLAY UNIT MF-22A-1

SHIP'S MAINS
115/230 V AC

Power ON SW Signal
Distance Run Signal
IEC 61162-1 Output

DIGITAL INDICATOR DS-830

DISTANCE INDICATOR DS-840

115/230 V AC

: STANDARD SUPPLY
: OPTIONAL SUPPLY

: LOCAL SUPPLY

2

PRINCIPLE OF OPERATION

The Doppler speed log measures ship's
speed by using the Doppler Effect, which is
observed as a frequency shift resulting from
relative motion between a transmitter and
receiver or reflector of acoustic or electro­magnetic energy . A common example of the
Doppler Effect is a train. When a train is
approaching, the whistle has a higher pit ch
than normal. You can hear the change in
pitch as the train passes.

The DS-80 has a pair-beam, one directed in
the fore direction and the other in the aft
direction, which emits ultrasonic waves at

an angle of θ to the waterline towards ship’s
fore and aft directions. The frequency of the
received signal is then compared with that
of the transmitted frequency to measure
doppler shift to calculate ship’s speed.

The relative motion causes the Doppler shift
and the ultrasonic waves reflected at t he
watermass (plankton or any underwater

r

objects) are received at the frequency of f
fo + fd where fd is the number of frequency
shifts counted at the receiver circuit. To

calculate ship’s speed, the following formula
is used.

V = fd/fo • c/2sinθ
c: Underwater velocity

Note that the sound velocity in water
changes with water temperature and water
pressure but the DS-80 readout is
automatically compensated for change by
using a temperature sensor.

=

V

f

o

θ

WATERMASS

fr = fo + f

SEA
SURFACE

d

3

REMARKS ON USAGE

Remarks on Usage

The DS-80 measures ship’s speed by
detecting the Doppler shift f r equency of the
echo reflected by a watermass (water layer
containing plankton and other micro­organisms) located within the measuring
area, which is usually about 2 m. In some
instances, however, no signal is returned
because of too few plankton in the sensing
depths. This phenomenon can occur in
particular areas in particular seasons. The
probable cause is the plankton are lying in
deep water because an ice-melted cold
water mass covers the sea surface. Similar
cases may also occur in a freshwater lake.
Under these circumstances the DS-80 will
not show the correct ship’s speed.

Conditions Affecting the Accuracy

(with ref to IMO A.824/3.3)
The Doppler speed log DS-80 is designed for
reliable and accurate performance through

The accuracy will not be affected by:

- water temperature (sound velocity)

•

salinity

•

pitch/roll ±10°

•

Beware of Transducer Location

The transducer may be damaged if it hits
the dry dock blocks. Take the following
measures to prevent damage to the
transducer.

1. Before delivering the ship, draw up a
suitable docking plan taking into
account the dimensions and location of
the transducer. Store the plans onboard
the ship.

2. Place the dry dock blocks according to
the plan.

3. Have a diver check the position
between the transducer and the blocks
before removing the water. Confirm that
the transducer will not touch the blocks.

FURUNO’s long experience and advanced
technology. It operates on the best choice of
system frequency and power output. As far as
the sonic energy is used, the performance
(accuracy) may be reduced or even lost
under:

rough weather (may be sea state 6 or

•

severer)

improper location of sensor, e.g., too close

•

to the propeller, thrusters, drain tubes, echo
sounder transducer

depth under the keel if less than 3 m

•

4

1.1 Controls

1 OPERATION OF DISPLAY UNIT

Omnipad
Selects items, options
on menus.

Opens/closes the menu.

Selects display; speed

plus distance or speed.

MENU

DISP

DS-80

1.2 Turning the Power On/Off

1.2.1 Power on

Press the [POWER] switch to turn on the
equipment. The last-used display appears.
The example below shows the speed and
distance run.

SPEED STW

Speed

10.0

DISTANCE

kt

ENT

DIM

Registers options on menus.

Adjusts panel illumination.

Adjusts LCD contrast.

*

PWR

1.2.2 Power off

Press the [POWER] switch to turn the
power off.

Note:

Keep the DS-80 energized
continuously unless it fails. Turning off the
DS-80 may cause an inconvenience in
associated equipment, such as a radar.

Turns power on/off.

12.50

nm

Note:

STW means Speed Thro ugh Water. Thi s
indication flashes when transduc er temperatur e,
which can be monitored on the TEST display
(see page 16), is abnormal. This means speed
accuracy is less than stated in the
specifications.

Distance
Run

5

1.3 Adjusting Contrast, Panel

1.4 Selecting a Display

Dimmer

1.3.1 Contrast

1. Press the [*] key to open the contrast

adjustment dialog box.

CONTRAST (0~63)

41

EXIT: [ENT]

2. Press the Omnipad at or to adjust

the contrast. The setting range is 0 to 63
and the default setting is 48.

3. Press the [ENT] key.

Note:

The contrast is automatically set to

default (48) when the power is turned on.

1.3.2 Panel dimmer

Press the [DISP] key to select display
desired. Each time the key is pressed the
display shows speed and distance run or
speed alone as below.

Direction

: Fore
: Aft

SPEED STW

Speed

10.0

DISTANCE

12.50

nm

[DISP] key
to switch

SPEED STW

kt

Distance
Run

1. Press the [DIM] key to show the dimmer

adjustment dialog box.

DIMMER (1~8)

7

EXIT: [ENT]

2. Press the Omnipad at or to adjust

the dimmer. The setting range is 1 to 8
and the default setting is 4.

3. Press the [ENT] key to conclude.

Note:

The [DIM] key is inoperative when

dimmer is controlled externally.

10.0

kt

Arrow indicates direction:

•

fore;
The distance run indication shows the

•

total distance run in forward speed only.
The distance run is backed up when the

•

power is turned off.

Note:

because of air bubbles, etc.
When speed error occurs, the speed
indication freezes, and “KT” is highlighted
and blinks. If speed error continues more
than 30 seconds, the speed indication
changes to **.*.

, aft.

Speed error may occur in rough seas

indicates

6

1.5 Main Menu Operation

Functions of the DS-80 are selected
through the menu.

5. Press the [MENU] key twice to close the
menu. (Some menus require only a
single pressing of the [MENU] key.)

1. Press the [MENU] key to open the
menu.

MENU

DISTANCE RUN DISPLAY

DEMO
SYSTEM MENU
SYSTEM MENU2

2. Press the Omnipad at

or

to select
a menu item (current selection is
highlighted) and press the [ENT] key.
For example, when DISTANCE RUN
DISPLAY is selected the following
display appears. Distance run is a form
of contact closure, 200 pulses/nm. To
select IEC 61162 sentence, see
paragraph 1.6.1.

To enter numerical data

Some menus require input of numeric data.
This is done with the Omnipad.

1. Select the digit or sign (+ or -) to change
with

or on the Omnipad. (The

cursor shows the digit or sign selected.)

2. Enter a figure at each digit by hitting the
Omnipad at

. The example

or
below shows the DISTANCE RUN
DISPLAY menu, where you may adjust
the distance run indication for SET.

DISTANCE RUN DISPLAY

DATA DISPLAY
CONTACT CLOSURE
RESET OFF
SET

Cursor

000000.00nm
SET

ENT

DISTANCE RUN DISPLAY

DATA DISPLAY
CONTACT CLOSURE
RESET OFF
SET

0.00nm
SET

ENT

3. Press the Omnipad at

or

the menu item desired and press the
[ENT] key. For example select RESET.

DISTANCE RUN DISPLAY
DATA DISPLAY

CONTACT CLOSURE
RESET OFF
SET

4. Press the Omnipad at

OFF

ON

or

the menu option desired and press the
[ENT] key.

to select

to select

3. Press the [ENT] key to conclude.

1.6 Distance Run Operation

The operator may adjust and reset the
distance run indication and select display
method.

1.6.1 Selecting display method

The default setting provides for independent
display and adjustment of the distance run
indication on all displays (display un it,
Digital Indicator, distance indicator).

To show the same distance run indication
on all displays do the following:

1. Press the [MENU] key to open the
menu.

7

MENU

DISTANCE RUN DISPLAY

DEMO
SYSTEM MENU
SYSTEM MENU2

2. Press the Omnipad at

to select
DISTANCE RUN DISPLAY and press
the [ENT] key.

The cursor circumscribes the leftmost
digit of the distance run figure.

DISTANCE RUN DISPLAY

DATA DISPLAY
CONTACT CLOSURE
RESET OFF
SET

Cursor

000000.00nm
ENT

SET

DISTANCE RUN DISPLAY

DATA DISPLAY
CONTACT CLOSURE
RESET OFF
SET

0.00nm
SET

ENT

3. Select DATA DISPLAY and press the
[ENT] key.

DISTANCE RUN DISPLAY

DATA DISPLAY

CONTACT CLOSURE

RESET OFF

IEC61162(VLW)

SET

CONTACT CLOSURE

0.00 nm
SET

4. Press

ENT

to select IEC 61162(VLW)

and press the [ENT] key.

5. Press the [MENU] key twice to close the
menu.

4. Press the Omnipad at or to select
the digit to change.

5. Press the Omnipad at

or

to
change value. The setting range is 0.00
nm to 999999.99 nm.

6. Press the [ENT] key followed by
pressing the [MENU] key twice to
conclude your selection and close the
menu.

1.6.3 Resetting distance run to zero

Distance run can be reset to zero when the
menu item DATA DISPLAY is selected to
CONTACT CLO S URE. It may also be reset
to zero only at the display unit when IEC
61162(VLW) is selected.

1. Press the [MENU] key to open the
menu.

1.6.2 Adjusting distance run

Distance run can be changed when the
menu item DATA DISPLAY is selected to
CONTACT CLO S URE. It may also be
changed only at the display unit when IEC
61162(VLW) is selected. .

1. Press the [MENU] key to open the
menu.

2. Use
DISPLAY and press the [ENT] key.

3. Select SET and press the [ENT] key.

to select DISTANCE RUN

2. Press the Omnipad at

to select
DISTANCE RUN DISPLAY and press
the [ENT] key.

3. Select RESET and press the [ENT] key.

DISTANCE RUN DISPLAY
DATA DISPLAY

CONTACT CLOSURE
RESET OFF
SET

OFF

ON

4. Press the Omnipad at to select ON.

8

5. Press the [ENT] key to finish and press
the [MENU] key twice to close the
menu.

3. Select averaging time period desired
among 15, 30, 45 and 60 seconds.

4. Press the [ENT] key.

The distance run indication reads 0.00.

1.7 System Setting

The system setting provides the
fundamental parameters for intended
performance of the DS-80.

1.7.1 Displaying the system menu

1. Press the [MENU] key to open the
menu.

2. Select SYSTEM MENU and press the
[ENT] key.

SYSTEM MENU

SHIP SPEED AVG 15 SEC
SPEED OFFSET +0.0%
TRACK DEPTH 2.0 m
XDR OFFSET +00˚
SPD DATA SELECT
DOPPLER
ENT: SET

1.7.2 Ship speed average

5. Press the [MENU] key twice to close the
menu.

1.7.3 Speed offset (calibration)

Calibration of any speed log is necessary
through the sea trials during the
commissioning tests. Fill in the calibration
sheet which is on page 25 of this manual.
Us the resultant data to calculate speed
offset and enter it as below. The setting
range is -25.0% to +25.0%.

1. Open the SYSTEM MENU.

2. Select SPEED OFFSET and press the
[ENT] key.

SYSTEM MENU

SHIP SPEED AVG 30 SEC
SPEED OFFSET +0.0%
TRACK DEPTH 2.0 m
XDR OFFSET +00˚
SPD DATA SELECT
DOPPLER
ENT: SET

Wind and currents affect ship’s speed, and
speed data is averaged over the time period
set on this menu. Increase the speed
averaging period if the speed reading is
unstable.

1. Open the SYSTEM MENU.

2. Select SHIP SPEED AVG and press the
[ENT] key.

15 SEC

30 SEC
45 SEC
60 SEC

3. Select the digit to change with or
and change the value with

or

on

the Omnipad.

4. Press the [ENT] key.

5. Press the [MENU] key twice to close the
menu.

1.7.4 Tracking depth

Doppler shift measuring depth in the DS-80
is 2 m at default. If the speed readout is
unstable due to air bubbles near the ship’s
hull, increase or decrease the track depth to
stabilize the readout. The sett ing range is

1.0 m to 9.9 m.

1. Open the SYSTEM MENU.

9

SYSTEM MENU

1.7.6 Speed data selection

SHIP SPEED AVG 30 SEC
SPEED OFFSET +0.0%
TRACK DEPTH 2.0 m
XDR OFFSET +00˚
SPD DATA SELECT
DOPPLER
ENT: SET

2. Select TRACK DEPTH and press the
[ENT] key.

SYSTEM MENU

SHIP SPEED AVG 30 SEC
SPEED OFFSET +0.0%
TRACK DEPTH 2.0 m
XDR OFFSET +00˚
SPD DATA SELECT
DOPPLER
ENT: SET

3. Select the digit to change or and
change the value with

or

on the

Omnipad.

4. Press the [ENT] key.

5. Press the [MENU] key twice to close the
menu.

When the DS-80 fails to work as an SDME,
the display unit can be used as a monitor
display tool for a GPS speed or other
equipment measuring the ship’s speed.

1. Open the SYSTEM MENU.

2. Select SPD DATA SELECT and press
the [ENT] key.

GPS

DOPPLER

AUTO

3. Select the option GPS and press the
[ENT] key.

4. Press the [MENU] key twice to close the
menu.

See the illustration below for speed display
information. If the speed displayed is
unstable perform the check described in
paragraph 3.2.

GPS-measured
speed

1.7.5 Transducer offset

Sets the deviation angle of the transducer’s
orientation with reference to the ship’s
longitudinal axis. This is done at installation;
no user adjustment is necessary.

SPEED STW

DISTANCE

nm

Doppler speed

10.0

12.50

kt kt

SPEED GPS

DISTANCE

nm

GPS speed

10.0

12.50

"AUTO" position indicates a Doppler speed
(SDME) but if the DS-80 fails, a GPS speed
will be indicated.

Note 1:

If the log speed fails, the display
unit reads a GPS speed, but speed data will
not be output to other equipment.

Note 2

: Doppler speed is used to calculate
speed when both DOPPLER and GPS are
abnormal in AUTO.

10

1.7.7 S ystem menu 2

The System Menu 2 contains the diagnostic
test and selection of dimmer control and
display language.

1. Press the [MENU] key to open the
menu.

2. Select SYSTEM MENU 2 and press the
[ENT] key.

SYSTEM MENU2

TEST

DIMMER INTERNAL
/LANG. ENGLISH

4. Select the digit to change with
to set. (The setting range

5. Use

or

or .

is

-10.0 to +40.0 kt, and the default set ting
is +10.0 kt.)

6. Press the [ENT] key.

7. Press the [ENT] key to open the DATA

DISPLA Y menu.

DEMO
SPEED

+10.0 kt
DATA DISPLAY OFF

ON

OFF

ENT: SET

ENT: SET

TEST :

Checks the equipment for proper

operation. For further details see Chapter 3.

DIMMER:
LANG.:

See paragraph 1.3.2.

Selects the language to use in

menus, English or Japanese.

1.8 Demonst ration Mode

The demonstration mode out puts the
Doppler speed signal to external equipment.
This checks if the signal is being correctly
output. )

1. Press the [MENU] key to open the
menu.

2. Select DEMO and press the [ENT] key.

8. Press

to select ON and press the

[ENT] key.

9. Press the [MENU] key twice to close the
menu.

The indication “DEMO” appears at the top
right-hand corner when the demo mode is
on. To turn off the demonstration display,
show the DEMO menu and set SPD to OFF.

SPEED DEMO

10.0

DISTANCE

Demonstration
mode "ON"

kt

DEMO
SPEED

+10.0 kt
DATA DISPLAY OFF

ENT: SET

3. Select SPEED and press the [ENT] key.

11

2 OPERATION OF OPTIONAL

The Digital Indicator DS-830 and Distance
Indicator DS-840 have the same controls as
the display unit. This chapter explains the
features which are not shared with the
display unit.

EQUIPMENT

SPEED STW

10.0

DISTANCE

kt

12.50

DISTANCE INDICATOR nm

Speed

Distance
Run

2.1 Digital Indicator DS-830, Distance Indicator DS-840

2.1.1 Selecting a display

Press the [DISP] key to select the display
mode. Each time the key is pressed the
display shows speed plus distance run or
speed alone as below.

SPEED STW

Speed

DISTANCE

10.0

nm

SPEED INDICATOR

[DISP] key
to switch

SPEED STW

kt

12.50

Distance
Run

[DISP] key
to switch

DISTANCE

12.50

DISTANCE INDICATOR

Distance Indicator DS-84 0

2.1.2 Menu operation

1. Press the [MENU] key to show the
display below.

MENU

DISTANCE RUN DISPLAY

SYSTEM MENU2

nm

10.0

SPEED INDICATOR

Digital Indicator DS-830

kt

2. For details refer to the following:

DISTANCE RUN DISPLAY:

1.6.

SYSTEM MENU 2:

2.

2.1.3 Adjusting dimmer and

contrast

See paragraph 1.3.

See 1.7.7 System Menu

12

See paragraph

ANALOG DISPLAY UNIT

CORRECTION DIAGRAM AT EXTREME TEMPERATURES

Doppler Speed Log DS-80

CORRECTION FACTOR FOR ANALOG DISPLAY MF-22A-1

Example:
If the analog speedometer reads 14.2 kt at a temperature of –15°C, the correct speed

through the water is 15 kt. Failure of correct ion in lo w temperature can result in a m aximum
error of –0.8 kt or 5.3% for 14.2 kt readout. IMO limit of ±2% is exceeded over 10.0 – 30.0 kt
reading but correction by this graph brings a correct measurement.

At +55°C, an error of +0.0 kt (+2.7%) occurs at a speed of 30 kt; no other point IMO limit of

±

2% is exceeded.

When the digital display and anal og display readouts are different, t ake precedence of the
digital readout. At temperatures 0°C to 50°C, the speedometer never exceeds the IMO
limits.

13

3 MAINTENANCE, TROUBLESHOOTING

WARNING

ELECTRICAL SHOCK HAZARD

Do not open the equipment.

Only qualified personnel
should work inside the
equipment.

3.1 Maintenance

3.1.1 Preventive maintenance

Check the following points regularly to
maintain performance.

Check that the connectors on all units of

•

the system are firmly fastened and free of
rust. Clean if soiled or corroded.

Check that all ground wires are tightly

•

fastened.

Dust and dirt on the display unit including

•

the screen may be removed with a soft
cloth. Do not use chemical cleaners to
clean the display unit; they can remove
paint and markings.

3.1.2 Transducer maintenance

CAUTION

Do not paint the transducer.

Painting will affect performance.

3.1.3 Fuse replacement

Fuses in the units of the system protect the
electrical circuitry from burning by
overcurrent. If the equipment cannot be
energized check the fuse in the power
cable connected to the display unit. Locate
the cause before replacing the fuse.

Unit

Display
Unit

Distribution
Box

Transceiver
Unit

Rating,

Qty

1A,
2 pcs.

3A,
2 pcs.

1A,
2 pcs.

Type,

Code No.

FGMB 1A
125 VAC,
000-114-8
05

FGBO 3A
250 VAC
000-549­021

FGBO 1A
250 VAC,
000-549­019

Location

Fuse
holder in
power
cable

Inside
unit

Marine life (barnacles, etc.) adhering to the
transducer face will reduce sensitivity.
Periodically remove any marine life from
the transducer face with fine sandpaper or
a piece of wood.

CAUTION

Use the proper fuse.

Use of a wrong fuse can cause fire or
equipment damage and void the warranty.

14

3.2 Troubleshooting

This section provides troubleshooting procedures. Advanced level troubleshooting should
be done by referring to the Service Manual (optional supply).

Problem Probable cause Remedy

General

Cannot turn on the
power.

Power is on but

Loosened power cable Fasten the power cable.
Blown fuse Replace the fuse.

Contrast too low. Press the [*] key several times.
nothing appears on
the screen.

Doppler speed indication

SPEED

DISTANCE

nm

SPEED

DISTANCE

nm

SPEED STW

DISTANCE

nm

STW

10.0

12.50

Last correct speed is displayed
(display freezes).

kt

Reverse video and blinking

STW

**. *

Speed shown as "**.*".

kt

12.50

10.0

flashing

STW

kt

12.50

GPS speed indication

SPEED GPS

DISTANCE

nm

**.*

12.50

Speed indication shown as "**.*".

kt

Ship’s speed cannot be calculated
because of air bubbles, etc. (Speed error :
30 seconds)

• Problem with the transducer or air

bubbles.

• Speed error continues more than 30

seconds.

• Temperature sensor is abnormal.

GPS data error.

SPEED

DISTANCE

nm

----

"GPS" is replaced with "----".

---

kt

12.50

If any abnormal speed indication continues
contact your dealer for advice.

• No GPS data for 30 seconds.

• GPS receiver disconnecte d.

15

3.3 Diagnostics, Checking Program Number

The diagnostic facility checks the ROM,
RAM, SIO and displays program ID.

1. Press the [MENU] key to open the
menu.

2. Select SYSTEM MENU2 and press the
[ENT] key.

SYSTEM MENU2

TEST

DIMMER INTERNAL

/LANG. ENGLISH

control is operated within five seconds,
the equipment autom atically begins
checking the LCD.

Transducer temperature

Name of control operated
appears here.

TEST

No. of times test
consecutively
executed.

ROM : OK 12.3CX
RAM : OK
SIO : OK

PUSH KEY

(STOP: PWR OFF)

6550100003I
6550110003J

CNT: 006 6550120003K

6550100003I = Display Unit DS-800
6550110003J = Distribution Box DS-801
6550120003K = Transceiver Unit DS-810

X appears when
temperature
sensor is
abnormal

Control operated and indication

3. Press the [ENT] key. The following
display appears.

TEST START ?

(STOP: PWR OFF)

ARE YOU SURE ?

YES NO

4. Press the [ENT] key to start the test. In
a few moments the display should
changes as shown at the top of the
adjacent column.

The ROM, RAM and SIO (if special
connector is used) are checked for
proper operation and the results shown
as OK or NG (No Good). For NG,
contact your dealer for advice.

Control Indication

UP
DOWN
LEFT

RIGHT
MENU MENU
ENT ENT
DISP DISP
DIM DIM
* *

5. The equipment automatically checks
the LCD, displaying the following in
order.

<LCD CHECK>

ALL ON 2 SEC.

ALL OFF 3 SEC.

The program number also appears
here.

“PUSH KEY” is highlighted, prompting
you to check the controls. Operate any
control (except the [POW ER] switch)
within five seconds. The name of the
activated control appears on screen if it
is operating normally. Note that if no

6. The test repeats itself. To stop the test,
turn the power switch off and on again.

16

4 DIGITAL INTERFACE (IEC 61162-1

Edition 2)

4.1 I/O Sentences

Input sentences of IEC61162_RX port

GGA, VTG

Output sentences of IEC61162_TX1, IEC61162_TX2 ports

VBW, VLW (Talker: VD)

Transmission interval

3 s for VBW; 1 s for VLW

Data transmission

Data is transmitted in serial asynchronous form in accordance with the standard referenced
in 2.1 of IEC 61162-1. The first bit is a start bit and is followed by data bits,
least-significant-bit as illustrated below.

The following parameters are used:
Baud rate: 4800
Data bits: 8 (D7 = 0), parity none
Stop bits: 1

D0 D1 D2 D3 D4 D5 D6 D7

Start
bit

Data bits

Stop
bit

17

Schematic diagrams

IEC61162 RX port

DS-801

65P6010

11
12

.

.

.

.

<11<

<12<

.

.

TB3

F2047A-20P-B

IEC61162_RX_A
IEC61162_RX_B

Load requirements as listener
Isolation: Optocoupler

Input Impedance: 44 ohm s
Max. Voltage: ±2.6V
Threshold: 4 mA

IEC61162 TX1 po rt

JP6
ERJ_6GEY0R00V

JP7
ERJ_6GEY0R00V

R121 22Ω

R122 120Ω

R123 120 Ω
R124 22Ω

1

2

CR17 1SS181

PC400
U42

1

3

6

4

5

Output drive capability
Max. 20 mA

18

IEC61162 TX2 po rt

DS-801

65P6010

9

10

.

.

.

.

.

.

.

.

TB3
F2047A-20P-B

IEC61162_TX2_A
IEC61162_TX2_B

Output drive capability
Max. 20 mA

<7<
<8<

R136

47

R135

47

Vcc

1

U43
SN75ALS191PS

8
7

2

4

19

4.2 Sentence Description

GGA - Global positioning system (GPS) fix data

Time, position and fix related data for a GPS receiver.

Note: Item Only GPS quality indicat or and antenna altitude above/below are used.

20

VTG - Course over ground and ground speed

The actual course and speed relative to the ground.

$--VTG,x.x,T,x.x,M,x.x,N,x.x,K,a*hh<CR><LF>
| | | | | | | | | |
| | | | | | | | | +------- 6
| | | | | | | | +--------- 5
| | | | | | +--+----------- 4
| | | | +--+----------------- 3
| | +--+----------------------- 2
+--+----------------------------- 1

1. Course over ground, degrees true

2. Course over ground, degrees magnetic

3. Speed over ground, knots

4. Speed over ground, km/h

5. Mode indicator(see note)

6. Checksum

NOTE Positioning system Mode indicator:
A = Autonomous
D = Differential
S = Simulator
N = Data not valid
The positioning system Mode indicator field shall not be a null field.

Note: Speed, course degrees magnetic and course degrees true not used.

21

VBW - Dual ground/water speed

Water-referenced and ground-referenced speed data.

$--VBW,x.x,x.x,A,x.x,x.x,A,x.x,A,x.x,A*hh<CR><LF>
| | | | | | | | | | |
| | | | | | | | | | +--- 11
| | | | | | | | | +----- 10
| | | | | | | | +-------- 9
| | | | | | | +----------- 8
| | | | | | +-------------- 7
| | | | | +----------------- 6
| | | | +-------------------- 5
| | | +------------------------ 4
| | +--------------------------- 3
| +------------------------------ 2
+---------------------------------- 1

1. Longitudial water speed, knots

2. Transverse water speed, knots

3. Status: water speed, A=data valid V=data invalid

4. Longitudial ground speed, knots

5. Transverse ground speed, knots

6. Status: ground speed, A=data valid V=data invalid

7. Stern transverse water speed, knots

8. Status: stern water speed, A=data valid V=data invalid

9. Stern transverse ground speed, knots

10. Status: stern ground speed, A=data valid V=data invalid

11. Checksum

Notes

1. Longitudinal speed: “-” astern.
* Not used.

VLW - Distance travelled through the water
The distance travelled, relative to the water.

$--VLW,x.x,N,x.x,N*hh<CR><LF>
| | | | |
| | | | +--------- 3
| | +--+----------- 2
+--+----------------- 1

1. Total cumulative distance, nautical miles

2. Distance since reset, nautical miles

3. Checksum

22

5 PARTS LOCATION AND PARTS LIST

Parts Location

Display unit DS-800

U10 (ROM)

Distribution box DS-801

ICP Board 65P6000, parts side

From right TB1, TB2, TB3

TB101

POWER
switch

JPW Board

Distribution Box DS-801, inside view

23

Transceiver unit DS-810

TB1

KCP Board

TB101

POWER
Switch

Transceiver Unit DS-810, inside view

24

Parts List

This equipment contains complex modules in which fault diagnosis and repair down to
component level are not practicable (IMO A.694(17)/8.3.1). Only some discrete components
are used. FURUNO ELECTRIC CO., LTD. believes identifying these components is of no
use for shipborne maintenance; theref ore, they are not listed in this manual. Major modules
can be located on parts location photos on the preceding page.

25

Model DS-80

Y

Unit DISPLAY UNIT DS-800

ELECTRICAL PARTS LIST Ref.Dwg. C3441-K01-C

2000-01 Block.No.

SYMBOL TYPE CODE No. REMARKS SHIPPABLE

ASSEMBL

PRINTED CIRCUIT BOARD

65P6000, ICP 000-142-649 X

CABLE w/CONNECTOR

MJ-A7SPF-005-020 000-139-384 20S0251
MJ-A6SPF-003-020 000-142-658 65S1231
MJ-PH 6P 000-142-659 65S1227
MJ-PH 7P 000-142-660 65S1228

26

Model DS-80

Y

Unit TRANSCEIVER DS-810

ELECTRICAL PARTS LIST Ref.Dwg. C7247-K02-A

2000-01 Block.No.

SYMBOL TYPE CODE No. REMARKS SHIPPABLE

ASSEMBL

PRINTED CIRCUIT BOARD

65P6020,KCP 002-889-570 X

POWER SUPPLY ASSEMBLY

DS-810 002-889-530 X

SWITCH

S1 S-331 000-474-214

VARISTOR

CR1 ERZV-20D471 000-136-287

TRANSFORMER

T1 65S1218 000-142-647

TERMINAL BOARD

TB101 F1003-20A-5725-6P 000-137-321

NOISE FILTER

XF1 ZGB2202-01U 000-132-968

CABLE w/CONNECTOR

66-045(2P) 002-889-550 VH CONNECTOR
65-046(6P) 002-889-560 VH CONNECTOR

27

Model DS-80

Y

Unit DISTRIBUTOR DS-801

ELECTRICAL PARTS LIST Ref.Dwg. C7247-K03-A

2000-01 Block No.

SYMBOL TYPE CODE No. REMARKS SHIPPABLE

ASSEMBL

PRINTED CIRCUIT BOARD

65P6010,JPW 002-889-490

ASSEMBLY

DS-801 002-889-470 POWER SUPPLY

POWER SUPPLY ASSEMBLY

DS-801-100 002-889-410
DS-801-110 002-889-420
DS-801-115 002-889-430
DS-801-200 002-889-440
DS-801-220 002-889-450
DS-801-230 002-889-460

X

X

X
X
X
X
X
X

SWITCH

S1 S-331 000-474-214

VARISTOR

CR1 ERZV-20D471 000-136-287

TERMINAL BOARD

TB101 F1003-20A-2P 000-142-631

FUSE HOLDER

F1 FH-001AF 000-138-909

POWER SUPPLY

PD1 FAW-24-2R1 000-142-633

NOISE FILTER

XF1 ZAC2210-11 000-120-155

28

CALIBRATION SHEET

SEA STATE

DS-80

Location of Transducer (m) from bow or frame No.

CALIBRATION SHEET FOR DS-80 DOPPLER SPEED LOG

DATE: TEST SITE SHIP'S LENGTH (M) DRAFT Fore Aft Mean (m)

SHIP'S NAME Ser. No. DOCKYARD TRIM (m)

.

29

Default settings in bold italic.

[MENU] key

MENU OVERVIEW

DISTANCE RUN DISPLAY

DEMO

SYSTEM MENU

SYSTEM MENU2

DATA DISPLAY (
RESET (ON,
SET (0.0 nm-999999.99 nm,

SPEED (-10.0 to +40.0 kt,
DATA DISPLAY (

SHIP SPD AVG (15, 30, 45, 60 SEC)
SPEED OFFSET (-25.0% to +25.0%,
TRACK DEPTH (1.0 m to 9.9 m,
XDR OFFSET (-40˚ to +40˚,
SPD DATA SELECT (GPS,

TEST (Check of ROM, RAM, LCD, Key Panel)
DIMMER (
LANG. (

INTERNAL,

ENGLISH

CONTACT CLOSURE

OFF

)

0.00 nm

+10.0 kt

OFF

, ON)

0

˚)

DOPPLER

EXTERNAL)

, JAPANESE)

)

2 m

, IEC 61162-1(VLW))

)

0%

)

)

, AUTO)

30

INDEX

C

Contrast.......................................................... 6

Control description.........................................5

D

Demonstration mode...................................... 9

Diagnostics...................................................14

Digital indicator.............................................12

Digital interface.............................................16

Digitial display ..............................................12

DIM key ..........................................................6

Dimmer........................................................... 6

Distance run

adjusting .....................................................9

display method............................................8

resetting to zero..........................................8

F

Fuse replacement.........................................13

P

Parts list ........................................................20

Parts location ................................................18

POWER switch ...............................................5

S

Ship's speed

averaging time.............................................9

offset..........................................................10

source........................................................11

System configuration......................................2

System menu..................................................9

System menu2..............................................11

T

Transducer

maintenance..............................................13

position offset............................................10

Troubleshooting............................................14

M

Maintenance................................................. 13

MENU key ......................................................7

Menu operation ..............................................7

Menu tree .....................................................24

U

UNIT key.........................................................7

W

Water tracking depth.....................................10

Index-1