Furuno NAVIONICS GP-1650WDF, GP-1650WF Operator's Manual

COLOR DGPS/PLOTTER/SOUNDER
COLOR GPS/PLOTTER/SOUNDER

GP-1650WDF, GP-1650WF FURUNO/NAVIONICS
GP-1650WDF, GP-1650WF FURUNO/C-MAP NT

Your Local Agent/DealerYour Local Agent/Dealer

9-52 Ashihara-cho,9-52 Ashihara-cho,
Nishinomiya, JapanNishinomiya, Japan

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

FIRST EDITION :FIRST EDITION :AUG.AUG. 20022002

Printed in JapanPrinted in Japan

A

ll rights reserved.

A

ll rights reserved.

B :B :AUG.AUG. 28,200228,2002

PUB.No.PUB.No. OME-44242OME-44242

*00080936100**00080936100*

*00080936100**00080936100*

(( HIMAHIMA ))

GP-1650WF/1650WDFGP-1650WF/1650WDF

* 0 0 0 8 0 9 3 6 1 0 0 ** 0 0 0 8 0 9 3 6 1 0 0 *

*OME44242B00**OME44242B00*

*OME44242B00**OME44242B00*

* O M E 4 4 2 4 2 B 0 0 ** O M E 4 4 2 4 2 B 0 0 *

i

SAFETY INSTRUCTIONS

Do not disassemble or modify the
equipment.

Fire, electrical shock or serious injury
can result.

Do not open the equipment.

Immediately turn off the power at the
switchboard if the equipment is emitting
smoke or fire.

Continued use of the equipment can cause

fire or electrical shock.

Do not operate the equipment with wet
hands.

Electrical shock can result.

Use the proper fuse.

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

Hazardous voltage which can cause
electrical shock, burn or serious injury
exists inside the equipment. Only qualified
personnel should work inside the equipment.

WARNINGWARNING

CAUTION

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

No one navigation device should ever be
solely replied upon for the navigation of
a vessel.

Always confirm position against all available
aids to navigation, for safety of vessel and
crew.

Do not turn on the equipment with the
transducer out of water.

The transducer may be damaged.

Use the proper gain setting.

Incorrect gain may produce wrong depth
indication, possibly result ing in a
dangerous situation. See "Adjusting the
gain" on page 2-6.

The picture is not refreshed when
picture advancement is stopped.

Maneuvering the vessel in this condition
may result in a dangerous situation.

A warning label is attached to the equip­ment. Do not remove the label. If the
label is missing or illegible, contact
a FURUNO agent or dealer.

WARNING

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

Name: Warning Label (1)
Type: 86-003-1011-1
Code No.: 100-236-231

The TFT LCD is constructed using the
latest LCD techniques, and displays

99.99% of its pixels. The remaining 0.01%
of the pixels may drop out or blink, how­ever this is not an indication of malfunc­tion.

About the TFT LCD

Do not maneuver the vessel based
on the depth indication alone.

Grounding may result.

ii

TABLE OF CONTENTS

FOREWORD ..................................iv

SYSTEM CONFIGURATION .........v

WHAT IS WAAS?........................... vi

1. OPERATIONAL OVERVIEW

1.1 Display Unit Controls .....................1-1

1.2 Inserting Mini Chart Card...............1-2

1.3 Turning the Pow e r On /Off..............1-2

1.4 Adjusting Tone and Brilliance.........1-3

1.5 Plotter Displays..............................1-4

1.6 Sounder Displays...........................1-4

1.7 Menu Operation, Soft Keys............1-5

1.8 Demonstration Display...................1-6

2. VIDEO SOUNDER OPERATION

2.1 Principle of Operation ....................2-1

2.2 Sounder Display Description ..........2-2

2.3 Dual-frequency Display..................2-4

2.4 Plotter/Sounder Display.................2-4

2.5 Automatic Sounder Operation........2-5

2.6 Manual Sounder Operation............2-5

2.7 Measuring Depth ...........................2-7

2.8 Suppressing Interference .............2-7

2.9 Suppressing Low Level Noise........2-7

2.10 Erasing Weak Echoes....................2-8

2.11 White Marker .................................2-8

2.12 Select ing Picture Advance Speed..2-9

2.13 Select ing Background and Echo

Colors............................................2-9

2.14 Alarms.........................................2-10

2.15 Interpreting the Display................2-11

3. PLOTTER DISPLAYS

3.1 Presentation Modes ...................... 3-1

3.2 Cursor...........................................3-2

3.3 Shifting the Display........................3-2

3.4 Displaying Nav Information Window3-2

3.5 Selecting Chart Scale/Range.........3-3

3.6 Mini Chart Cards...........................3-3

3.7 Navigation Data Display................3-6

3.8 Steering Display............................3-7

3.9 Highway Display............................3-8

3.10 Changing Operation Mode ............3-9

3.11 Navigation Trip Distance..............3-10

4. TRACK

4.1 Displaying Track............................ 4-1

4.2 Stopping/Restarting Plotting

of Trac k......................................... 4-1

4.3 Changing Track Color....................4-2

4.4 Track Plotting Method, Interval......4-2

4.5 Changing Track Memory

Capacity........................................4-3

4.6 Erasing Tracks ..............................4-4

5. MARK

5.1 Entering Marks.............................. 5-1

5.2 Changing Mark Attributes..............5-2

5.3 Changing Mark Size......................5-3

5.4 Erasing Marks...............................5-4

5.5 Displaying Track and Mark

Points............................................5-4

5.6 Target Mark................................... 5-4

6. WAYPOINTS

6.1 Entering Waypoints.......................6-1

6.2 Erasing Individual Waypoints.........6-4

6.3 Changing Waypoint Data...............6-5

6.4 Changing Waypoint Position on

the Plotter Display.........................6-5

6.5 Waypoint Mark Size.......................6-6

6.6 Searching Waypoints.....................6-6

TABLE OF CONTENTS

iii

7. ROUTES

7.1 Entering Routes.............................7-1

7.2 Connecting Routes........................7-2

7.3 Inserting, Removing Waypoints.....7-3

7.4 Creating Track-based Routes........7-5

7.5 Erasing Routes..............................7-6

8. NAVIGATION

8.1 Navigating to “Quick Points” ..........8-1

8.2 Navigating to Waypoints

(waypoint list) ................................8-2

8.3 Navigating to Ports, Port

Services.........................................8-2

8.4 Following a Route..........................8-4

8.5 Canceling Navigation.....................8-6

9. PLOTTER ALARMS

9.1 Introduction....................................9-1

9.2 Audio Alarm On/Off........................9-1

9.3 Arrival Alarm..................................9-2

9.4 Anchor Watch Alarm......................9-2

9.5 XTE (Cross Track Error) Alarm......9-3

9.6 Speed Alarm..................................9-3

9.7 Proximity Alarm..............................9-3

9.8 Alarm Information..........................9-4

10. MEMORY CARD OPERATIONS

10.1 Formatting Memory Cards...........10-1

10.2 Saving Data to Memory Card.......10-2

10.3 Loading Data from Memory Card.10-3

11. CUSTOMIZING YOUR UNIT

11.1 CHART SETUP OPTIONS menu 11-1

11.2 DISPLAY OPTIONS menu........... 11-3

11.3 GPS/DGPS/TD OPTIONS

menu...........................................11-5

11.4 SOUNDER SETUP OPTIONS

menu...........................................11-9

11.5 CONFIGURATION menu........... 11-11

12. USING C-MAP NT MODEL

12.1 Inserting Chart Card ..................12-1

12.2 Cursors and Data Display .......... 12-2

12.3 Tidal Information ......................... 12-3

12.4 Navigation to Ports, Port

Service........................................ 12-4

12.5 Setting Chart Setup Options........12-6

12.6 Selecting Chart Scale/Range...... 12-7

12.7 Displaying Program Number....... 12-8

13. MAINTENANCE &
TROUBLESHOOTING

13.1 Maintenance............................... 13-1

13.2 Replacement of Fuse, Battery..... 13-2

13.3 Simple Troubleshooting............... 13-2

13.4 Error Messages........................... 13-3

13.5 Diagnostic Tests.......................... 13-4

13.6 Clearing Memories...................... 13-6

APPENDIX

MENU TREE..........................................A-1

LORAN C CHAINS.................................A-4

DECCA CHAINS....................................A-5

WORLD TIME........................................A-6

GEODETIC CHART LIST.......................A-7

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

INDEX
DECLARAT ION FO R CONFORM ITY

i

v

FOREWORD

A Word to
GP-1650WDF/1650W F Owners

Congratulations on your choice of the
FURUNO GP-1650WDF COLOR
DGPS/PLOTTER/SOUNDER, GP-1650WF
COLOR GPS/PLOTTER/SOUNDER. We are
confident you will see why the FURUNO
name has become synonymous with quality
and reliability.

For over 50 years FURUNO Electric
Compan y has enjoyed an enviable
reputation for innovative and dependable
marine electronics equipmen t. T hi s
dedicati on to ex cellence is furthere d by our
extensive g lobal network of agents and
dealers.

This equipment is designed and constructed
to meet the rigorous demands of the marine
environment. However, no machine can
perform its intended function unless installed,
operated and maintained properly. Please
carefully read and fo llow the recommended
procedures for operation and maintenance.

We would appreciate hearing from you, the
end-user, about whether we are achieving
our purposes.

Thank you for considering and purchasing
FURUNO equipment.

Features

The GP-1650WDF provides a totally
integrated DGPS beacon receiver, WAAS
function, GPS receiver, color video plotter
and color video sounder. The GP-1650WF
mostly shares the same features with the
GP-1650WDF except it does not have a
DGPS beac on r ecei v er.

Navigation information is displayed on a
bright 5.6-inch color TFT LCD. On-screen
informati on sh ow n are position, range and
bearing to cur sor po s i tion, range, bear i n g,
ET A and TTG to waypoi n t, etc.
A high sensitivity receiver tracks up to twelve
(WAAS: thirteen) satellites simu ltaneously.
An 8-state Kalman filter ensures optimum
accuracy in de termination of vessel position,
course and speed.

C-MAP NT-FP chart card is available for the
GP-1650WDF/1650WF.

The main features of the
GP-16 50WDF/1650WF are

• WAAS capability.

• Comprehensive navigation data displays.

• Bright 5.6-inch color TFT LCD with

temperat ur e c om p ensated tone and
brilliance control.

• Automatic coastline chart loading.

• Position displa y in latitude and longitude,

Loran C or Decca TDs.

• Improved position accuracy with optional

DGPS beacon receiver (GP-1650WF).

• Accepts both FURUNO and NAVIONICS

chart card or FURUNO and C-MAP NT
mini chart cards.

• Alarms: Arrival, A nchor Watc h, Cross-track

Error, Speed, Proximity, Fish, Bottom,
Temperature.

• Man overboard feature records latitude

and longitude coordinates at time of man
overboard.

• “Highway” display provides graphic

presentation of ship’s track and is useful
for monito ring cross track erro r.

• Automatic or manual video sounder

operation.

v

SYSTEM CONFIGURATION

Ship's mains
12-24 VDC

External equipment
(Autopilot, etc.)

DGPS beacon receiver
(GP-1650WF only)

ANTENNA UNIT

Receives signal from
GPS satellite and beacon
reference station.
(GP-1650WDF only)

DISPLAY UNIT

GPA-017
(GP-1650WF)

GPA-019
(GP-1650WDF)

Rectifier

PR-62

Ship's mains
100/110/115/220/230 VAC
1 , 50/60 Hz

Transducer

vi

WHAT IS WAAS?

WAAS, available in North America, is a provider in the worldwide SBAS (Satellite Based
Augmentation System) navigation system. An SBAS pr ovider furnishes GPS signal corrections
to SBAS users. Two more SBAS providers are also currently under development, MSAS
(Multi-Functional Satellite Augmentation System) for Japan and EGNOS (Euro Geostat ionar y
Navigation Overlay Service) for Europe. All providers will be compatible with one another, thus
providing “seamless” position fixes to SBAS users.

150°W 120°W 90°W 60°W 30°W 0 30°E 60°E 90°E 120°E 150°E

150°W 120°W 90°W 60°W 30°W 0 30°E 60°E 90°E 120°E 150°E

0

20

°S

40

°S

60

°S

20

°N

40

°N

60

°N

0

20

°S

40

°S

60

°S

20

°N

40

°N

60

°N

WAAS

EGNOS

MSAS

Satellite, Region Position

120, AOR-E

15.5°W

122, AOR-W

54°W

131, IOR

64.5°E

134, POR

178°E

131

134

122

120

Initial operation time
WAAS: 2003

EGNOS: 2004
MSAS: 2005

At the time of this sof tware release, SBAS is still under development. (Providers are expected to
have initial operations capability from the times shown above.) During this developmental period,
which may last for several years, there is no guarantee of t he accur acy, integrity, continuity, or
availability of the SBAS signal. Furuno will accept no responsibility for the use of the signal for
other than the above stated purpose. It is the user’s responsibility to exercise common
prudence and navigational judgment while using the SBAS sig nal in t he development al phase.

Note: This manual uses “WAAS” when ref er ring to any SBAS provider.

1-1

1. OPERATIONAL OVERVIEW

This chapter acquaints you with the basics of your unit - from turning on the power to the soft
key menu operation.

1.1 Display Unit Controls

SAVE

MOB

ENTER

ABC1DEF2GHI

3

JKL

4

MNO

5

PQR

6

STU

7

VWX

8

YZ&

9

CLEAR

_'#

0

MENU

HIDE

SHOW

WPT
RTE

SNDR

PLOT

ALARM

POWER

BRILL

• Registers own ship's positions.

• Marks man overboard position, event position.

Registers items
on menus.

Soft key's functions change
depending on the display.

Selects video sounder display.

Displays the waypoint & route
menu.

Selects plot display.

Mini chart card slot.

• Long press: Turns power off.

• Touch and release: Turns power on.

Opens the window for adjustment of tone and brilliance.

Displays the alarm menu.

Cursor pad

• Shifts cursor and display.

• Selects items on menus.

Enter alphanumeric data.

Opens/closes
the main menu.

• Clears data.

• Erases selected waypoint.

• Silences audible alarm.

Displays/hides the soft key menu,
nav data, mode indication.

Display uni t

1. OPERATIONAL OVERVIEW

1-2

1.2 Inserting Mini Chart
Card

Insert appropriate mini chart card before
turning on the power.

Note: Static electricity can be passed

through your fingers to a memor y card
and destroy the contents of the card.
To prevent this, always touch a
metallic object, such as a steel desk,
before handling a memory card.

1. Push down the lid catch to open the mini

chart card slot cover.

Card slot

Location of mini chart

card slot cover

2. Insert appropr iate mini chart card groove

side up.

Mini chart card

Inserting groove
side up.

Direction of mini chart card

3. Close the slot cover to prot ect t he chart

drive. (Keep the slot cover closed at all
times.)

Note: Turn off power befor e inserting or

ejecting the mini chart card.

1.3 Turning the Power
On/Off

Turning the power on

Press the [POWER/BRILL] key at bottom
left-hand side of the display unit to t urn on
the power. When the unit is turned on, it
proceeds in the sequence shown in the
figure in below, after displaying the FURUNO
information display.

Displayed for about five seconds.

Displayed for about 30 seconds,
or press any key to escape.

The last-used display appears.

NO NATIONAL HYDROGRAPHIC OFFICE
HAS VERIFIED THE INFORMATION
IN THIS COASTLINE DATA CARD AND
NONE ACCEPT LIABILITY FOR THE
ACCURACY OF REPRODUCTION OR ANY
MODIFICATIONS MADE THEREAFTER.
THIS PRODUCT WITH THIS COASTLINE
DATA CARD DOES NOT REPLACE THE
REQUIREMENT TO USE THE
APPROPRIATE PRODUCTS FOR
NAVIGATION ACCORDING TO NATIONAL
AND INTERNATIONAL REGULATONS.

- - WARNING - -

FURUNO ELECTRIC CO., LTD.

PROGRAM OK
RAM OK
BACKUP DATA OK
INTERNAL BATTERY OK
GPS OK

START UP TEST

Start-up sequence

For any NG on the start up test display,
request service.

The GP-1650W DF/1650WF tak es about 90
seconds to find its position when turned on
for the very first time. This is because the
equipment has no satellite data, called the
Almanac, in its database. If you want to
lessen the time needed to find position you
may enter your position manually (default
position: San Francisco, USA) on the GPS
SETUP OPTIONS menu.

Thereafter it takes about 12 seconds to find
position each time the power is turned on.

1. OPERATIONAL OVERVIEW

1-3

When the satellite signal is being received
normally, the GP-1650WDF/1650WF
displays various abbreviations at the bottom
left-hand corner of t he display which show
DGPS/GPS receiver status. The t able in
below shows these abbreviations and their
meanings.

Display abbreviations

Indication Meaning

GPS 2D

2D (dimension) GPS

position fix
GPS 3D 3D GPS position fix
DGPS 2D

(GP-1650WDF)

2D differential GPS

position fix
DGPS 3D

(GP-1650WDF)

3D differential GPS

position fix
NO FIX

Position cannot be

found.
DOP DOP error
DEMO Simulation mode
GPS W2D 2D WAAS position fix
GPS W3D 3D WAAS position fix

Turning the power off

Press and hold down the [POWER/ BRI LL]
key until the screen goes blank. Th e t im e
remaining until the power is turned off is
shown on the screen.

Note: The example screens shown in this

manual may not match the screen you
see on your display. The screen you
see depends on your system
configuration and equipment settings.

1.4 Adjusting Tone and
Brilliance

1. Press the [POWER/BRILL] key with a

touch-and-release action. The tone and
brilliance setting window appears.

TONE

BRILL

TONE

TONE

BRILL

BRILL

RETURN

Tone and display brilliance setting window

Functions

Soft keys

Tone and brilliance adjust ment window

2. Press ◄ or ► on the cursor pad to adjust

display tone.

3. Press ▲ or ▼ on the cursor pad to adjust

display brilliance.

Note that tone and brilliance can also be
adjusted by soft keys. After pressing the
[POWER/ BRI LL] key, use the appropriate
soft key to adjust tone or br illiance.

Note: Tone or brilliance m ust be adjusted

within 10 seconds after pressing the
[POWER/ BRI LL] key or the tone and
brilliance adjustment window will be
erased.

1. OPERATIONAL OVERVIEW

1-4

1.5 Plotter Displays

Press the [PLOT] key. Each time this key is
pressed, the display mode changes in the
sequence shown below. For display mode,
refer to Chapter 3.

[Plotter Display]

DGPS 3D

NAV
POS

COURSE

UP

ZOOM

OUT

ZOOM

IN

NORTH

UP

BRIDGE

FISH

WP-002

[Nav Data Display]

[Steering Display]

DGPS 3D

EDIT
XT -LMT

XTE 000.02nm

0.1nm0.1nm

BRG

245.0°

CSE
TTG

RNG
SPD

nm
kt

ET A

1h 59m 29th 14:50

234.5°

27.2

13.6

260250240230

CROSS

TRACK

QP<01>

[Highway Display]

DGPS 3D

EDIT
XT -LMT

XTE 000.02nm

0.1nm0.1nm

HIGHWA Y

001WPT

CSE

BRG
RNG
SPD

87.8°

94.6°

1.88nm

001WPT

YUUKI

FISH01

10.0kt

DGPS 3D

BEACON

INFO

SA T

INFO

ZOOM

TD

LA T/LON

DATE: JUN 02 2002 TIME 23:59:59
POSITION

34° 56.789' N

135° 56.789' E

RNG

nm

27.2

BRG

245.0°

SPD

kt

16.3

CSE

245.8°

DATUM: WGS-84

LA T

LON

TMP 65.8°F DEP 20ft

TRIP:123nm

Display modes (plotter)

1.6 Sounder Displays

Three sounder displays are available:
Normal, Dual-freq uency display and
Plotter/Sounder display. You may select a
sounder display with the [SNDR] key.

DGPS 3D

PLOT

COURSE

UP

ZOOM

OUT

ZOOM

IN

NORTH

UP

0

50

100

SNDRSNDR

PLOT

PLOT

SNDR
FUNC

GAIN

RANGE

SOUNDER

50

SNDR

MODE/
FREQ

SHIFT

0

0.0

[Plotter/Sounder Display]

[Normal Sounder Display]

DGPS 3D

PLOT

MODE

GAIN
200kHz

RANGE

SOUNDER

DUAL

50

100

150

SNDR

SHIFT

0

50k

0.0

200k

50

100

150

GAIN
50kHz

[Dual-frequency Display]

150

100

150

DGPS 3D

50k

Display modes (Sounder display)

Note: Sounder display mode can be

selected with the SNDR FUNC soft
key. For further details see “ Select ing
sounder display mode” on page 2-3.

1. OPERATIONAL OVERVIEW

1-5

1.7 Menu Operation, Soft
Keys

Most operations are carried out through the
menu which is opened and closed with the
[MENU] key. Menus may be selected with
the five soft keys to the right of menus.
Options are selected with the cursor pad.

1. Press the [MENU] key to display the

main menu.

MENU

DGPS 3D

CHART SETUP OPTIONS

GPS/DGPS/TD OPTIONS

DISPLAY OPTIONS

CONFIGURATION

Soft
keys

SOUNDER SETUP OPTIONS

Main menu

2. Press appropriate soft key to display

desired menu. For example, press the
DISPLAY OPTIONS soft key. The name
of the menu in use appears at the top
right corner of the display.

DGPS 3D

DISPLAY
SETUP 1

EDIT

RNG & BRG MODE RHUMB LINE
RANGE/SPEED UNIT nm/kt
DEPTH UNIT ft
TEMP UNIT F
LAT/LON DISPLAY DD MM.MMM'
TIME DISPLAY 24 HOUR
WAYPOINTS SW AUTO2
COURSE VECTOR LINE
BEARING MAGNETIC
MAG VARIATION AUTO 01.3 E
TD DISPLAY LORAN C
POSITION DISPLAY LAT/LON
SET GO TO METHOD 1 POINT
OPERATION MODE PLEASURE
LANGUAGE ENGLISH

RETURN

NEXT
PAGE

Display setup 1 menu

3. Select item with the cursor pad, and
press the EDIT soft k ey. For example,
select TIME DISPLAY.

TIME DISPLAY

12 HOUR
24 HOUR

Time display window

4. Use the cursor pad to change the setting.

5. Press the ENTER soft key or [ENTER]

key.

6. Press t he RETURN soft key.

7. Press t he [ PLO T] key to finish.

1. OPERATIONAL OVERVIEW

1-6

1.8 Demonstration Display

The demonstration display provides
simulated operation of this unit. On the
plotter display, own ship tracks, at the speed
selected, a figure eight course or any course
you enter, starting from position entered. All
controls are operative; you may set
destination, enter waypoints, etc. Simulated
sounder operation is also provided.

1. Press the [MENU] key, followed by the
CONFIGURATION and SYSTEM MENU
soft keys to open the system menu.

2. Press the DEMONSTRATION MODE soft
key to open the demonstration setting
screen.

DGPS 3D

RETURN

DEMO
MODE

EDIT

DEMO MODE
DEMO SPEED
DEMO COURSE
DEMO START LAT
DEMO START LON

OFF

10.0kt

000.0°
34°12.34'N
135°12.34'E

Demo setting screen

3. Press ▲ or ▼ to select DEMO MODE.

4. Press the EDIT soft key to show the
demo mode window.

DEMO MODE

▲

ON
OFF

▼

Demo mode window

5. Press ▲ to select ON.

6. Press the ENTER soft key or the
[ENTER] key.

7. Select DEMO SPEED and press t he

EDIT soft key. Enter speed. Select digit
with ◄/► and enter appropriate numeric
value with the numeric keys.

8. Press t he ENTER soft key or [ENTER]

key.

9. Select DEMO COURSE and pr ess t he
EDIT soft key. Select how you want the
courseline to be traced; by FIGURE 8 or
DIR.(ection). For DIR., enter course.

10. Press the ENTER soft key or [ENTER]
key.

11. Select DEMO START LAT, and press the
EDIT soft key. Enter latitude. Use the N<

- > S soft key to switch coordinates if
necessary.

12. Press the ENTER soft key or [ENTER]
key.

13 Select DEMO START LON, and press

the EDIT soft key. Enter longitude. Use
the E< - > W soft key to switch
coordinates if necessary.

14. Press the ENTER soft key or [ENTER]

key.

15. Press the RETURN soft key.

16. Press the [PLOT] soft key.

To cancel the demonstr ation display, set
DEMO MODE to OFF.

2-1

2. VIDEO SOUNDER OPERATION

2.1 Principle of Operation

The video sounder determines the distance
between its transducer and underwater
objects such as fish, lake bottom or seabed
and displays the results on screen. It does
this by utilizing the fact that an ultrasonic
wave transmitted through water travels at a
nearly constant speed of 4800 feet (1500
meters) per second. When a sound wave
strikes an underwater object such as fish or
sea bottom, part of the sound wave is
reflected back toward the source
(transducer). Thus by calculating the time
difference between the transmission of a
sound wave and the reception of the
reflected sound wave, the depth to the object
can be determined.

The entire process begins in the display unit.
Transmitter power is sent to the transducer
as a short pulse of electrical energy. The
electrical signal produced by the transmitter
is converted into an ultrasonic signal by the
transducer and transmitted into the water.
Any returning signals from intervening
objects (such as a fish school) are received
by the transducer and converted into an
electrical signal. The signals are then
amplified in the amplifier section, and finally,
displayed on screen.

The picture displayed is made up of a series
of vertical scan lines, one for each
transmission. Each line represents a
snapshot of what has occurred beneath the
boat. A series of snapshots are accumulated
side by side across the screen, and the
resulting contours of the bottom and fish
between the bottom and surface are
displayed.

-

-

-

-

-

-

-

-

-

-

-

-

0

50

150

100

Underwater conditions and video sounder display

2. VIDEO SOUNDER OPERATION

2-2

2.2 Sounder Display
Description

The figure below shows all indications and
markers which may appear on the normal
sounder display.

Normal sounder display indications,
markers

SNDR
FUNC

SHIFT

GAIN

RANGE

SOUNDER

135° 12.345' E

34° 12.345' N

SPD

CSE

16.3kt

245.8°

MODE/
FREQ

50k

F

Nav information
window

Color
bar

Functions for
soft keys

Variable
Range
Marker
(white)

Depth scale

Tx frequency

GPS status

Depth

20

30

40

50

80

60

40

0

Temp.
scale

Water
temp.
Graph

Water
temp.
display

30.0

15.0

GPS 3D

Minite
mark

Indications on the normal sounder display

Note: The water temperature graph can be

turned on or off. (See TEMP GRAPH
on page 11-4.) The temperature scale
is fixed between 20-80°F (0 to 30°C).

The normal sounder display shows either the
50 kHz picture or 200 kHz picture. To switch
between these pictures, do the following:

1. Press the [SNDR] key several times to

show the normal sounder display.

SOUNDER

GAIN

RANGE

SNDR
FUNC

SHIFT

MODE/
FREQ

20

30

40

50

30

20

0

50k

GPS 3D

Normal sounder display

2. Press the MODE/FREQ soft key. The
display changes as below.

DGPS 3D

RETURN

SELECT

50kHz

SOUNDER

50

100

150

0

50k

0.0

SELECT

200kHz

MODE/FREQ

▲

AUTO CRUISING
AUTO FISHING
MANUAL

▼

Mode/freq window

3. Press the SELECT 200kHz (or SELECT
50kHz) soft key.

4. Press the RETURN soft key to manually
close the window, or wait 10 seconds and
the window automatically closes.

50 kHz picture

The sounder uses ultrasonic pulses to detect
bottom conditions. The lower the frequency
of the pulse, the wider the detection area.
Therefore, the 50 kHz frequency is useful for
general detection and judging bottom
condition.

200 kHz picture

The higher the frequency of the ultrasonic
pulse the better the resolution. Therefore,
the 200 kHz frequency is ideal for detailed
observation of fish school.

50 kHz

200 kHz

Comparison of transducer frequencies

2. VIDEO SOUNDER OPERATION

2-3

Selecting sounder display mode

There are five display modes from which to
choose: normal, marker zoom, bottom zoom,
bottom lock and A-scope. To select a display,
press the SNDR FUNC soft key on the
normal sounder display to show the sounder
function window, and press ▲ or ▼ to select
the display. Press the RETURN soft key to
close the window.

SOUNDER FUNCTION

▲

NORMAL
MARKER ZOOM
BOTTOM ZOOM
BOTTOM LOCK
A-SCOPE

▼

Sounder function window

Marker zoom display

This mode expands a selected area of the
normal sounder picture to full vertical size of
the screen on the left-half window. You may
specify the portion to expand by operating
the VRM (Variable Range Marker), which
you can shift with ▲ or ▼. The area between
the VRM and zoom marker is expanded.

200k

202

0

50

100

150

90.0

100

200

150

Marker zoom
display

Fish school

Normal
sounder
display

Fish
school

This part
is zoomed.

Zoom marker

VRM

GPS3D

200

Marker-zoom display plus

normal sounder display

Bottom-zoom display

This mode expands bottom and bottom fish
echoes to vertical size of the screen, and is
useful for observing the bottom shape.

200k

0

50

100

150

40.0

160

100

120

140

180

Bottom zoom
display

Bottom

Normal
sounder
display

Zoom
marker

DGPS3D

162

200

Bottom-zoom display plus

normal sounder display

Bottom-lock displ a y

The bottom-lock display provides a
compressed normal picture on the right half
of the screen and a 3 or 6 meters (10 or 20
feet) wide layer in contact with the bottom is
expanded onto the left half of the screen.

200k

34.0

68.3

0

2

4

6

This part
is zoomed.

Fish
school

Bottom-lock
display

Fish
school

Zoom
marker

Normal
sounder
display

GPS3D

Bottom
display flat

0

40

50

30

20

10

Bottom-lock display plus

normal sounder display

Note: The zoom marker is not displayed in

the default setting. It may be turned on
in the DISPLAY SETUP2 menu. For
further details see “ZOOM MARKER”
on page 11-5.

2. VIDEO SOUNDER OPERATION

2-4

A-scope display

This display shows echoes at each
transmission with amplitudes and tone
proportional to their intensities, on the right
of the screen. It is useful for estimating the
kind of fish school and seabed composition.

200k

0

50

100

150

200

68.3

Normal
sounder
display

A-scope
display

DGPS3D

160

A-scope display plus

normal sounder display

2.3 Dual-frequency Display

The 50 kHz picture appears on the left; the
200 kHz picture on the right. This display is
useful for comparing the same picture with
two different sounding frequencies.

GPS 3D

MODE

GAIN
200kHz

RANGE

SOUNDER

DUAL

SNDR

50k

0.0

200k

20

40

60

GAIN
50kHz

20

40

60

SHIFT

43.5

Dual-frequency display

2.4 Plotter/Sounder Display

This display provides the plotter display on
the left part of the screen and the normal
sounder display on the right part. It is useful
for searching fish schools at cruising speed.
The width of the sounder display can be
selected between standard (approx. 20 mm)
and wide (approx. 40 mm) as below.

1. Press the [MENU] key and the
SOUNDER SETUP OPTIONS soft key.
The sounder setup menu appears.

2. Press ▼ to select E/S WINDOW window.

3. Press the EDIT soft key to show the E/S
WINDOW window.

E/S WINDOW

▲

STD

▼

WIDE

E/S window

4. Press ▲ or ▼ to select STD or WIDE.

STD: The width of the sounder display is

approx. 20 mm (default setting).

WIDE: The width is approx. 40 mm.

5. Press the [ENTER] key or the ENTER
soft key.

GPS 3D

PLOT

COURSE

UP

ZOOM

OUT

ZOOM

IN

NORTH

UP

0

50

100

150

SNDRSNDR

PLOT

Plotter Display

Sounder

Display

109

Plotter/Sounder display

2. VIDEO SOUNDER OPERATION

2-5

2.5 Automatic Sounder
Operation

Automatic sounder operation is useful when
you are preoccupied with other tasks and do
not have time to adjust the display.

How the automatic sounder works

The automatic sounder function
automatically selects the proper gain, range
scale and clutter suppression level according
to depth. It works as follows:

• Range changes automatically to display

the bottom echo on the screen.

• The gain is automatically adjusted to

display the bottom echo in reddish brown
(default color arrangement).

• Clutter, which suppresses low level noise,

is automatically adjusted.

Two types of automatic sounder
modes

Two types of automatic sounder modes are
available: CRUISING and FISHING.
CRUISING is for tracking the bottom, and
FISHING is for searching fish schools.
CRUISING uses a higher clutter rejection
setting than FISHING therefore it is not
recommended for fish detection - weak fish
echoes may be erased by the clutter
suppression circuit.

How to enable automatic sounder
operation

1. To show the mode/freq window:

Normal sounder display: Press the

MODE/FREQ soft key.

Plotter/sounder display: Press the

SNDR, MODE/FREQ soft keys in order.

Dual-frequency display: Press the

MODE soft key.

MODE/FREQ

▲

AUTO CRUISING
AUTO FISHING
MANUAL

▼

Mode/frequency window

2. Press ▲ or ▼ to select AUTO CRUISING
or AUTO FISHING.

3. Press the RETURN soft key to close the
window, or wait 10 seconds and the
window closes automatically.

2.6 Manual Sounder

Operation

Manual operation is useful for observing fish
schools and bottom using a fixed gain
setting.

The gain, clutter, range and range shifting
functions used together give you the means
to select the depth you can see on screen.
The basic range can be thought of as
providing a “window” into the water column
and range shifting as moving the “window” to
the desired depth.

Selecting the manual mode

1. Press the appropriate soft keys to show
the MODE/FREQ window.

2. Select MANUAL.

3. Press the RETURN soft key.

2. VIDEO SOUNDER OPERATION

2-6

Selecting display range

Press the RANGE soft key to show the
range window, and select range by the
cursor. Press the RETURN soft key to finish.

RANGE

▲

15 ft
30 ft
60 ft
120 ft
200 ft
400 ft
1000 ft

2500 ft

▼

Range window

Adjusting the gain

Press the GAIN soft key to show the gain
window, and press ▲ or ▼ to set the gain.
Current level is shown above the bar. Press
the RETURN soft key to finish.

GAIN

57

▲

HIGH

LOW

▼

Gain window

Note: On the dual-frequency display, the

gain can be independently set for 50
kHz and 200 kHz. This can be done
with the GAIN 50 kHz and GAIN 200
kHz soft keys.

Normally, set the gain to the point where
excessive noise does not appear on screen.
Use a higher gain setting for greater depths
and a lower setting for shallow waters.

Gain too high Gain proper Gain too low

Examples of proper and improper gain

Range shifting

The basic range may be shifted up or down
as desired.

Press the SHIFT soft key, and press ▲ or ▼
to shift the basic range. Press the RETURN
soft key to finish.

Display

Shift

Shift concept

2. VIDEO SOUNDER OPERATION

2-7

2.7 Measuring Depth

The VRM functions to measure the depth to
fish schools, etc., and it is always displayed.

1. Press ▲ or ▼ to shift the VRM.

2. Read the depth just above the VRM.

SNDR
FUNC

SHIFT

GAIN

RANGE

SOUNDER

MODE/
FREQ

50k

GPS 3D

VRM

20

30

40

50

30

20

10

0

42.0

17.5

Depth to VRM

How to use the VRM

Note: This function is not available on the

plotter/sounder display.

2.8 Suppressing
Interference

Interference from other acoustic equipment
operating nearby or other electronic
equipment on your boat may show itself on
the display as shown in the illustration at the
top of the next column.

To suppress interference, do the following:

1. Press the [MENU] key and the

SOUNDER SETUP OPTIONS soft key.

2. Select NOISE LIMITER and press the

EDIT soft key to show the noise limiter
window.

NOISE LIMITER

▲

OFF
NL1
NL2
NL3

▼

Noise limiter window

3. Press ▲ or ▼ to select degree of
suppression desired; OFF, NL1, NL2 or
NL3. The higher the number the greater
the degree of suppression.

4. Press the RETURN soft key and the
[SNDR] key to finish.

Interference from Electrical inteference
other sounder

Types of interference

Turn the noise limiter circuit off when no
interference exists, otherwise weak echoes
may be missed.

2.9 Suppressing Low Level

Noise

Light-blue dots may appear over most of
screen. This is mainly due to dirty water or
noise. This noise can be suppressed by
adjusting CLUTTER on the SOUNDER
SETUP OPTIONS menu.

When the sounder mode is Auto, the clutter
suppression setting is fixed at AUTO. To
suppress low level noise in manual sounder
operation do the following:

1. Press the [MENU] key and the
SOUNDER SETUP OPTIONS soft key.

2. Select CLUTTER and press the EDIT soft
key to show the clutter window.

CLUTTER

▲

3

▼

Clutter window

2. VIDEO SOUNDER OPERATION

2-8

3. Press ▲ or ▼ to select clutter rejection
level desired; 0 (OFF) through 9. The
higher the number the greater the degree
of suppression. Note that weak echoes
may not be displayed when the clutter
circuit is on.

4. Press the RETURN soft key and the
[SNDR] key to finish.

Appearance of clutter

2.10 Erasing Weak Echoes

Dirty water or reflections from plankton may
be painted on the display in green or light
blue. These weak echoes may be erased as
follows:

1. Press the [MENU] key and the
SOUNDER SETUP OPTIONS soft key.

2. Select SIGNAL LEVEL, and press the
EDIT soft key to show the signal level
window.

SIG LVL

▲

OFF
SL1
SL2
SL3
SL4
SL5
SL6

▼

SIG LVL

▲

OFF
SL1
SL2
SL3

▼

At 16-color display

At 8-color display

(See page 2-9.)

Signal level window

3. Press ▲ or ▼ to select level of erasure;
OFF or signal level among SL1 to SL6
(or SL3). The higher the number the
stronger the echo that will be erased.

4. Press the RETURN soft key and the
[SNDR] key to finish.

Weak
echoes

Appearance of weak echoes

2.11 White Marker

The white marker functions to display a
particular echo color in white. For example,
you may want to display the bottom echo
(reddish-brown) in white to discriminate fish
echoes near the bottom.

1. Press the [MENU] key and the
SOUNDER SETUP OPTIONS soft key.

2. Select WHITE MARKER, and press the
EDIT soft key to open the white marker
window.

WHITE MARKER

▲

3

▼

White marker window

3. Press ▲ or ▼ to select color to display in
white. As you press ▲ or ▼, the number
(corresponds to echo number) in the
marker window changes, the white
marker on the color bar shifts and
selected echo color is displayed in white.
The white marker setting range is
variable depending on the HUE setting
(see paragraph 2.13) as below.

HUE setting White marker range

8 color 0-8

16 color 0-16

2. VIDEO SOUNDER OPERATION

2-9

←

White marker shows
color currently
displayed in white.

Color bar when white marker function

is active

4. Press the RETURN soft key and the
[SNDR] key to finish.

To turn the white marker function off, display
“0” in the white marker window.

2.12 Selecting Picture

Advance Speed

The picture advance speed determines how
quickly the vertical scan lines run across the
screen. When selecting a picture advance
speed, keep in mind that a fast advance
speed will expand the size of the fish school
horizontally on the screen and a slow
advance speed will contract it.

1. Press the [MENU] key and the
SOUNDER SETUP OPTIONS soft key.

2. Select PICTURE ADVANCE, and press
the EDIT soft key to open the picture
advance window.

PICTURE ADVANCE

▲

2/1
1/1
1/2
1/4
1/8
STOP

▼

Picture advance window

The fractions in the window denote

number of scan lines produced per
transmission. For example, 1/8 means
one scan line is produced every eight
transmissions. STOP freezes the display
and it is convenient for observing an
echo.

3. Press ▲ or ▼ to select speed desired.

4. Press the RETURN soft key and the
[SNDR] key to finish.

2.13 Selecting Background

and Echo Colors

1. Press the [MENU] key and the
SOUNDER SETUP OPTIONS soft key.

2. Select HUE, and then press the EDIT soft
key to show the hue window.

HUE

▲

1

▼

Hue window

3. Press ▲ or ▼ to select hue number,
referring to the table below. (You can see
the result of your selection on the
display.)

Background and echo colors

euH

oN.

ohcE

roloC

dnuorgkcaB

roloC

1roloc61eulb-muideM
2roloc8eulb-muideM
3roloc61eulb-kraD
4roloc8eulb-kraD
5roloc61etihW
6roloc8etihW
7roloc61kcalB
8roloc8kcalB

9

,wolleyemorhconoM

seitisnetnithgie

2. VIDEO SOUNDER OPERATION

2-10

4. Press the RETURN soft key and the
[SNDR] key to finish.

2.14 Alarms

Bottom alarm

The bottom alarm sounds when the bottom
echo is within the alarm range set. To
activate the bottom alarm the depth must be
displayed.

Fish (B/L) alarm

The bottom-lock fish alarm sounds when a
fish echo is within a predetermined distance
from the bottom. This alarm is available
when the bottom-lock mode is active.

Fish (normal) alarm

The normal fish alarm sounds when a fish
echo is within the preset alarm range.

Note: The sensitivity of the fish alarm can be

set on the SOUNDER SYSTEM
SETUP menu.

Water temperature alarm

There are two types of water temperature
alarms: WITHIN and WITHOUT. The
WITHIN alarm sounds when the water
temperature is within the range set; the
WITHOUT alarm sounds when the water
temperature is higher or lower than the
range set. This alarm requires water
temperature data.

Activating/deactivating an alarm

1. Press the [ALARM] key to open the alarm
menu.

2. Press the NEXT PAGE soft key to show
the ALARM 2 menu.

DGPS 3D

ALARM2

EDIT

CLEAR
ALARM

ALARM INFORMATION

BOTTOM ALARM
FISH (B/L) ALARM
FISH (NORMAL)
TEMP. ALARM

OFF
OFF
OFF
OFF

NO ALARM

RETURN

Alarm 2 menu

3. Select the menu item, and press the
EDIT soft key.

4. Select ON or OFF. (For temperature
alarm select WITHIN, WITHOUT or OFF.)
For ON, WITHIN or WITHOUT, use the
cursor pad and the numeric keys to set
range.

5. Press the ENTER soft key.

When an alarm setting is violated...

When an alarm setting is violated the buzzer
sounds, and the (red) speaker icon appears
at the bottom of the screen. You can silence
the buzzer with the [CLEAR] key. (However,
the buzzer will sound whenever the alarm
setting is violated.) Press the [ALARM] key
to find out which alarm has been violated.
The offending alarm is displayed in red in the
ALARM INFORMATION window. Press the
CLEAR ALARM soft key to erase the alarm
indication. The alarm icon color changes to
black to show acknowledging the alarm. The
alarm icon remains displayed in red until all
violated alarms have been acknowledged.

2. VIDEO SOUNDER OPERATION

2-11

2.15 Interpreting the Display

Zero line

The zero line (sometimes referred to as the
transmission line) represents the
transducer’s position, and moves off the
screen when a deep phased range is used.

Zero
line

Shift

Zero line

Minute mark

Minute mark shows time with two colored bar.
Each bar is 30 sec.

Fish school echoes

Fish school echoes will generally be plotted
between the zero line and the bottom.
Usually the fish school/fish echo is weaker
than the bottom echo because its reflection
property is much smaller compared to the
bottom. The size of the fish school can be
ascertained from the density of the display.

Small
school

Large
school

Size of

fish school

Fish school echoes

Bottom echo

Echoes from the bottom are normally the
strongest and are displayed in reddish-brown
color but the color and width will vary with
bottom composition, water depth, frequency,
sensitivity, etc.

In a comparatively shallow depth, a high gain
setting will cause a second or sometimes a
third or a fourth echo to be displayed at the
same interval between them below the first
echo trace. This is because the echo travels
between the bottom and the surface twice or
more in shallow depths.

The color of the bottom echo can be used to
help determine the density of the bottom
materials (soft or hard). The harder the
bottom, the wider the trace. If the gain is set
to show only a single bottom echo on mud, a
rocky bottom will show a second or third
bottom return. The range should be chosen
so the first and second bottom echoes are
displayed when bottom hardness is being
determined.

Intensity

difference in

water depth

Second bottom

echo

Rock base

Mud

and sand

Bottom echoes

2. VIDEO SOUNDER OPERATION

2-12

Surface noise/Aeration

When the waters are rough or the boat
passes over a wake, surface noise may
appear near the zero line. As surface
turbulence is acoustically equivalent to
running into a brick wall, the bottom echo will
be displayed intermittently. Similar noise
sometimes appears when a water
temperature difference (thermocline) exists.
Different species of fish tend to prefer
different temperature zones, so the
thermocline may be useful to help identify
target fish. 200 kHz tends to show shallow
thermoclines better than 50 kHz.

In rough waters the display is occasionally
interrupted due to below-the-ship air bubbles
obstructing the sound path. This also occurs
when the boat makes a quick turn or
reverses movement. Lowering the picture
advance speed may reduce the interruption.
However, reconsideration of the transducer
installation may be necessary if the
interruption occurs frequently.

Surface noise

Caused by

aerated water

Thermocline

Surface noise/aeration

3-1

3. PLOTTER DISPLAYS

3.1 Presentation Modes

The plotter display mainly shows chart,
ship’s track, waypoints, and navigation data.

Three types of display presentations are
provided for the normal plotter display:
north-up, course-up and auto course-up. To
change the mode, use the presentation
mode selection soft key, which is the 3rd soft
key from the top.

North-up

Press the NORTH UP soft key to show the
north-up display. North (zero degree) is at
the top of the display and own ship is at the
center of the screen. Own ship marker is a
filled circle. This mode is useful for
long-range navigation.

DGPS 3D

NAV
WPT

COURSE

UP

ZOOM

OUT

ZOOM

IN

NORTH

UP

135° 12.345' E

34° 12.345' N

SPD

CSE

16.3kt

245.8°

BRIDGE

FISH

002WP

Nav information
window

Course bar

Functions for
soft key

Track

Own ship
marker

Current display mode

(north-up)

Icon (chart)

GPS status

Waypoint name
Waypoint mark

Plotter display, north-up mode

Course-up

Press the COURSE UP soft key to show the
course-up display. When destination is set it
is at the top of the screen, and the north
mark appears at the upper left side of the

screen and points to north. A filled triangle
marks own ship’s position.

When destination is not set, the course is
upward on the screen at the moment the
course-up mode is selected.

DGPS 3D

NAV
WPT

AUTO

C.U.

ZOOM

OUT

ZOOM

IN

COURSE

UP

QP<01>

135° 12.345' E

34° 12.345' N

SPD

CSE

16.3kt

245.8°

Plotter display, course-up mode

Auto course-up

Press the AUTO C.U. soft key to show the
automatic course-up display. When
destination is set it is at the top of the screen,
and the north mark appears at the upper left
side of the screen and points to north. A filled
triangle marks own ship’s position. The
course is at the top of screen at the moment
the automatic course-up mode is selected.
When own ship is off its intended course by

22.5

° or more, it is automatically brought

back to perpendicular.

DGPS 3D

NAV
WPT

NORTH

UP

ZOOM

OUT

ZOOM

IN

AUTO
C-UP

135° 12.345' E

34° 12.345' N

SPD

CSE

16.3kt

245.8°

Auto course-up mode

3. PLOTTER DISPLAYS

3-2

3.2 Cursor

Turning on the cursor, shifting the
cursor

Press the cursor pad to turn the cursor on,
and the cursor appears at the own ship’s
position. Operate the cursor pad to shift the
cursor. The cursor moves in the direction of
the arrow or diagonal pressed on the cursor
pad.

Cursor position is displayed in latitude and
longitude or Loran or Decca TDs (depending
on menu setting) at the top of the plotter
display when the cursor is on.

DGPS 3D

CENTER

GO TO
CURSOR

COURSE

UP

ZOOM

OUT

ZOOM

IN

NORTH

UP

135° 12.345' E

34° 12.345' NOSFROM

276.9°

16.45nm

Data displayed on the plotter display

when the cursor is on

Turning off the cursor, returning own
ship marker to screen center

The CENTER soft key turns off the cursor
and returns own ship marker to screen
center.

When the cursor is off, own ship position is
shown.

3.3 Shifting the Display

The display can be shifted on the plotter
display.

1. Press the cursor pad to display the
cursor.

2. Locate the cursor at a screen edge. The
screen shifts in the direction opposite of
cursor location.

3.4 Displaying Nav

Informati on Window

The nav information window can show four
data: own ship position, waypoint position,
own ship’s speed/course and off.

Press the soft key at the bottom of screen.
Each press key changes data in the
sequence shown below. Soft key name also
changes.

NAV POS soft key

Displays own ship's position, course and speed.

NAV WPT soft key

Displays range/bearing to the selected waypoint,
chart scale and own ship's course.

NAV S/C soft key

Displays own ship's course/speed and
water temperature*/depth.

NAV OFF soft key

Turns off the window.

*: Water temperature sensor is required.

Sequence of pressing the bottom soft key

When the cursor is on, the window at the top
of the display shows the cursor position
instead of own ship’s position. To change the
window mode when the cursor is on, press
the CENTER soft key to show the
appropriate soft key.

3. PLOTTER DISPLAYS

3-3

3.5 Selecting Chart
Scale/Range

Chart scale (range) may be selected with the
ZOOM IN or ZOOM OUT soft key. ZOOM IN
expands the chart; ZOOM OUT shrinks it.

3.6 Mini Chart Cards

The mini chart cards contain nautical charts.
When you insert a suitable mini chart card in
the slot and your boat is near land, a chart
appears.

When a wrong card is inserted or a wrong
chart scale is selected, the land will be
hollow. Insert the proper card and select a
suitable chart scale. Chart icons appear to
help you select a suitable chart scale. The
table below shows the chart icons and their
meanings.

Chart icons and their meanings

Icon Meaning

Proper card is not inserted or
chart scale is too small. Press
the ZOOM IN soft key to
adjust chart scale.

Chart scale is too large. Press
the ZOOM OUT soft key to
adjust chart scale.

Suitable chart scale is
selected.

Indices and chart enlargement

When the ZOOM OUT soft key is used, you
will see several frames appear on the chart.
These frames are called indices and they
show you what parts of the chart can be
enlarged in the current picture range. The
areas circumscribed with smaller frames can
be enlarged, but the area enclosed by the
largest frame cannot.

3. PLOTTER DISPLAYS

3-4

Sample chart (Japan and South Korea)

showing indices

Remarks on chart display

A chart will not be displayed in the following
conditions:

• When the chart scale is too large or too

small.

When this happens, select proper chart
scale.

• When scrolling the chart outside the

indices.

Chart symbols

FURUNO mini chart card

The table below shows FURUNO mini chart
symbols and their meanings.

FURUNO chart symbols

Symbol Description

Summit

Wreck

Lighthouse

Lighted Buoy

Buoy

Radio Station

Position of Sounding

Obstruction

Fishing Reef

Platform

Anchorage

Comparison of FURUNO and Nav-Charts

TM

chart cards

metIONURUF™strahC-vaN

gnillorcstoD

ytilibapac

SEYSEY

pu-esruoC

yalpsid

SEYSEY

atadesuohthgiL

noitatneserp

3*SEYSEY

rosructamooZ

noitisop

SEY1*

taegnaR

rotauqE

,5.0,521.0

8402...2,1

mn

tfelsaemaS

tesffotrahC

yrtneatad

SEYSEY

gniretneCSEY2*

*1 Nav-ChartsTM chart may not center the

cursor perfectly.

*2 Nav-Charts

TM

chart may not center own

ship's position perfectly.

*3 Newly designed chart cards containing

lighthouse data. Chart cards for North
America area are completed, and others
are in production.

*4 Nav-Charts

TM

is the registered trademark

of NAVIONICS INC.