Furuno NAVnet 1753C, NAVnet 1733C, NAVnet 1723C, NAVnet 1763C, NAVnet 1722C Operator's Manual

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MARINE RADAR

MODEL1722/1732/1742/1752/1762 MODEL1722C/1732C/1742C/1752C/1762C MODEL1723C/1733C/1753C/1763C

Your Local Agent/DealerYour Local Agent/Dealer

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

Telephone :Telephone : 0798-65-21110798-65-2111 faxfa

0798-65-42000798-65-4200

IRST EDITION :

IRST EDITION : APR.APR. 20012001

Printed in JapanPrinted in Japan

ll rights reserved.

GG :: SEP.SEP. 26,200326,2003

PUB.No.PUB.No. OME-34940OME-34940

*00080918202**00080918202*

(( HIMAHIMA ))

MODEL1722/C SER.MODEL1722/C SER.

* 0 0 0 8 0 9 1 8 2 0 2 ** 0 0 0 8 0 9 1 8 2 0 2 *

*OME34940G00**OME34940G00*

* O M E 3 4 9 4 0 G 0 0 ** O M E 3 4 9 4 0 G 0 0 *

SAFETY INSTRUCTIONS

WARNING

Do not disassemble or modify the equipment.

Fire, electrical shock or serious injury can result.

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. Contact a FURUNO agent for service.

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.

ELECTRICAL SHOCK HAZARD

Do not open the equipment.

Only qualified personnel should work inside the equipment.

CAUTION

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

WARNING

Radio Frequency Radiation Hazard

The radar antenna emits electromagnetic radio frequency (RF) energy which can be harmful, particularly to your eyes. Never look directly into the antenna aperture from a close distance while the radar is in operation or expose yourself to the transmitting antenna at a close distance.

Distances at which RF radiation levels of 100 and 10 W/m

exist are given in the

table below. Note: If the antenna unit is installed at a

close distance in front of the wheel house, your administration may require halt of transmission within a certain sector of antenna revolution. This is possible - Ask your FURUNO representative or dealer to provide this feature.

MODEL

Distance to

100 W/m

point

Distance to

10 W/m

point

1722 1722C 1723C

Nil

Worst case

1.50 m

1732 1732C 1733C

1742 1742C

1762 1762C 1763C

0.60 m

0.40 m

Worst case

4.00 m

Nil

Worst case

1.00 m

Worst case

5.20 m

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.

CAUTION

1752 1752C 1753C

0.15 m

Worst case

2.00 m

TABLE OF CONTENTS

FOREWORD ...................................................................................................... viii

SYSTEM CONFIGURATIONS ..............................................................................x

WHAT IS WAAS? ................................................................................................ xii

1. OPERATIONAL OVERVIEW .........................................................................1-1

1.1 Operating Controls...................................................................................................... 1-2

1.1.1 Display unit controls......................................................................................... 1-2

1.1.2 Remote controller............................................................................................. 1-5

1.2 Inserting a Chart Card................................................................................................. 1-6

1.3 Turning the U nit On/Off................................................................................................ 1-7

1.4 Cursor Pad, Cursor......................................................................................................1-8

1.5 Display Brilliance, Panel Brilliance, Contrast, Hue....................................................... 1-9

1.5.1 Display brilliance, panel brilliance..................................................................... 1-9

1.5.2 Contrast.......................................................................................................... 1-10

1.5.3 Hue (MODEL1722C/1723C series)................................................................ 1-10

1.6 Selecting a Display.....................................................................................................1-11

1.6.1 Display modes.................................................................................................1-11

1.6.2 Selectin g a dis play.......................................................................................... 1-12

1.6.3 Switching control in combination and overlay screens.................................... 1-13

1.6.4 Selectin g ra dar so ur ce.................................................................................... 1-14

1.7 Data Boxes................................................................................................................ 1-15

1.7.1 Showing, hiding data boxes with soft key........................................................1-15

1.7.2 Rearra nging data box es................................................................................. 1-15

1.7.3 Temporari ly era si ng a dat a box....................................................................... 1-15

1.8 Function Keys............................................................................................................ 1-16

1.8.1 Executi ng a fun c tio n....................................................................................... 1-16

1.9 Simulation Display..................................................................................................... 1-17

2. RADAR OPERATION.....................................................................................2-1

2.1 Radar Display.............................................................................................................. 2-1

2.2 Tra nsm i ttin g, S tand-by................................................................................................. 2-2

2.3 T uni n g......................................................................................................................... 2-2

2.4 Adjusting the Gain....................................................................................................... 2-2

2.5 Reducing Sea Clutter................................................................................................... 2-4

2.5.1 How the A/C SEA works ................................................................................... 2-4

2.5.2 Adjus ting A/C SEA............................................................................................ 2-4

2.6 Reducing Precipitation Clutter ..................................................................................... 2-5

2.6.1 Adjus ting the A/C RAIN..................................................................................... 2-5

2.6.2 Adjusting the FTC............................................................................................. 2-6

2.7 Range Scale................................................................................................................ 2-7

2.8 Pulselength.................................................................................................................. 2-8

iii

2.9 Presentation Mode.......................................................................................................2-9

2.9.1 Selectin g a pr ese nt a ti on mode..........................................................................2-9

2.9.2 Descripti on o f pres entation modes..................................................................2-10

2.10 Measuring the Range...............................................................................................2-12

2.10.1 Measuring range by range rings....................................................................2-12

2.10.2 Measuring range by cursor............................................................................2-13

2.10.3 Measuring range by VRM.............................................................................2-14

2.10.4 Erasing a VRM, VRM indication....................................................................2-15

2.10.5 Erasing EBL/VRM data boxes.......................................................................2-15

2.10.6 Hiding EBL/VRM data boxes.........................................................................2-15

2.10.7 Moving EBL/VRM data boxes.......................................................................2-15

2.11 Measuring the Bearing.............................................................................................2-15

2.11.1 Measuring bearing by cursor.........................................................................2-15

2.11.2 Measuring bearing by EBL............................................................................2-15

2.11.3 Erasin g an EB L, EBL indicati on.....................................................................2-16

2.11.4 Erasin g EB L/VRM data boxes.......................................................................2-16

2.11.5 Hiding EBL/VRM data boxes.........................................................................2-16

2.11.6 Moving EBL/VRM data boxes........................................................................2-16

2.12 Erasing the Heading Line, North Marker ..................................................................2-17

2.13 Reducing Noise........................................................................................................2-17

2.14 Reducing Radar Interference...................................................................................2-18

2.15 Zoom........................................................................................................................2-19

2.15.1 Zooming in on radar targets..........................................................................2-19

2.15.2 Zooming ARP, TTM targets...........................................................................2-19

2.16 Shifting the Picture...................................................................................................2-20

2.16.1 Manual shift..................................................................................................2-20

2.16.2 Automa tic shift...............................................................................................2-21

2.17 Using the Offset EBL................................................................................................2-22

2.17.1 Predicting a collision course..........................................................................2-22

2.17.2 Measuri n g ra n ge & be ar i ng be twe en tw o targets...........................................2-23

2.18 Echo T r ai ls...............................................................................................................2-24

2.18.1 Trail time.......................................................................................................2-24

2.18.2 S t ar ti n g ech o trails........................................................................................2-25

2.18.3 Trail brilliance (MODEL1722 series)..............................................................2 -25

2.18.4 Trail gradation (MODEL1722C/1723C series)...............................................2-25

2.18.5 Trail color (MODEL1722C/1723C series)......................................................2-26

2.19 Echo S tretch.............................................................................................................2-27

2.20 Echo A veraging........................................................................................................2-28

2.21 Outputting TLL Data.................................................................................................2-29

2.22 Guard Alarm.............................................................................................................2-30

2.22.1 Setting a gu ar d al ar m z one...........................................................................2-30

2.22.2 When the al ar m is viol ate d…........................................................................2-31

2.22.3 Canceling the guard alarm............................................................................2-31

2.23 Watchma n................................................................................................................2-32

2.23.1 How watchman works...................................................................................2-32

2.23.2 Turning on/o ff watchman...............................................................................2-32

2.23.3 Setting watchman stand-by interval...............................................................2-32

2.24 Waypoi nt Marker......................................................................................................2-33

2.25 ARP (option), TTM operation................................................................................... 2-34

2.25.1 Activ ating/de activating ARP, TTM ................................................................. 2-35

2.25.2 Acquiring and tracking targets (ARP only)..................................................... 2-36

2.25.3 Displaying target number (internal, external ARP) ........................................ 2-37

2.25.4 Terminating tracking of ARP targets.............................................................. 2-38

2.25.5 Setting vector attributes (ARP)..................................................................... 2-39

2.25.6 Displaying past position display (ARP) ......................................................... 2-40

2.25.7 AR P, TTM target dat a ....................................................................................2-41

2.25.8 CPA/TCPA alarm (ARP)................................................................................ 2-42

2.25.9 Lost target alarm (ARP)................................................................................ 2-43

2.26 Interpreting the Radar Display................................................................................. 2-44

2.26.1 General ........................................................................................................ 2-44

2.26.2 False echoes ................................................................................................ 2-46

2.26.3 SART (Search and Rescue Transponder)..................................................... 2-48

2.26.4 Racon (Radar Beacon)................................................................................. 2-50

3. PLOTTER OPERA TION.................................................................................3-1

3.1 Plotter Displays............................................................................................................3-1

3.1.1 Full-screen plotter display................................................................................. 3-1

3.1.2 Compass display.............................................................................................. 3-3

3.1.3 Highway display............................................................................................... 3-5

3.1.4 Nav data display............................................................................................... 3-6

3.2 Presentation Mode....................................................................................................... 3-7

3.2.1 North-up........................................................................................................... 3-7

3.2.2 Course-up ........................................................................................................ 3-8

3.2.3 Auto course-up................................................................................................. 3-8

3.3 Shifting the Display ...................................................................................................... 3-9

3.4 Chart Scale.................................................................................................................. 3-9

3.5 Chart Cards............................................................................................................... 3-10

3.5.1 Chart card overview........................................................................................ 3-10

3.5.2 Indices and chart enlargement.........................................................................3-11

3.5.3 FURUNO and NavCharts™............................................................................ 3-12

3.5.4 C-MAP cards.................................................................................................. 3-14

3.6 Working with Track .................................................................................................... 3-18

3.6.1 Displaying track .............................................................................................. 3-18

3.6.2 Stopping, restating plotting of own ship track.................................................. 3-19

3.6.3 Changi ng tr ack col or (MODEL1722C / 17 2 3C ser i es)....................................... 3-20

3.6.4 Track plotting method and interval for own ship track..................................... 3-21

3.6.5 Changing own ship track/mark distribution setting.......................................... 3-22

3.6.6 Erasing tr ack.................................................................................................. 3-23

3.7 Marks, Lines.............................................................................................................. 3-25

3.7.1 Entering a mark .............................................................................................. 3-25

3.7.2 Changing mark attributes................................................................................ 3-25

3.7.3 Selecting line type.......................................................................................... 3-26

3.7.4 Erasing marks, lines....................................................................................... 3-27

3.8 Wayp oints.................................................................................................................. 3-29

3.8.1 Enterin g way p oints......................................................................................... 3-29

3.8.2 Editing waypoint data..................................................................................... 3-32

3.8.3 Erasing w ayp oints...........................................................................................3-34

3.8.4 Changing waypoint mark size (FURUNO, NavCharts™).................................3-35

3.8.5 Searchi ng w ayp oi nt s.......................................................................................3-36

3.9 Routes.......................................................................................................................3-37

3.9.1 Creating routes...............................................................................................3-37

3.9.2 Connecting routes...........................................................................................3-41

3.9.3 Inserting waypoints.........................................................................................3-42

3.9.4 Removing waypoints from a route...................................................................3-44

3.9.5 Erasing r out es.................................................................................................3-44

3.10 Navigation................................................................................................................3-45

3.10.1 Navigating to a "quick point"..........................................................................3-45

3.10.2 Navigating to waypoints................................................................................3-46

3.10.3 Navigating to ports, port services (NavCharts™ C-MAP) ..............................3-47

3.10.4 Following a route...........................................................................................3-49

3.1 1 Alarm s ....................................................................................................................3-53

3.11.1 Audio alarm on/off.........................................................................................3-53

3.1 1.2 Arri val alarm..................................................................................................3-54

3.1 1.3 Anch or watch alarm.......................................................................................3-55

3.11.4 XTE (Cross Track Error) alar m......................................................................3-56

3.11.5 S p ee d alar m..................................................................................................3-56

3.11.6 Proximi ty alar m.............................................................................................3-57

3.11.7 T r ip al arm......................................................................................................3-58

3.1 1.8 Al arm information..........................................................................................3-59

3.12 Resetting Trip Distance............................................................................................3-60

3.13 Entering the MOB Mark, Setting MOB as Destination ..............................................3-61

4. VIDEO SOUNDER OPERATION ...................................................................4-1

4.1 Principle o f Oper atio n...................................................................................................4-1

4.2 Sounder Displays.........................................................................................................4-2

4.2.1 Selectin g a sou nd er dis play..............................................................................4-2

4.2.2 Descripti on o f soun der displ a ys........................................................................4-3

4.2.3 Selecting screen split method in combination displays......................................4-7

4.3 Automatic Sounder Operation......................................................................................4-8

4.3.1 How the automatic sounder works....................................................................4-8

4.3.2 Types of automa ti c soun d er modes...................................................................4-8

4.3.3 How to enable automatic sounder operation.....................................................4-8

4.4 Manual Sounder Operation..........................................................................................4-9

4.4.1 Selecting the manual mode...............................................................................4-9

4.4.2 Selectin g di spla y ra ng e.....................................................................................4-9

4.4.3 Adjus ting the gain..............................................................................................4-9

4.4.4 Range shifting.................................................................................................4-10

4.5 Measuring Depth, Time.............................................................................................. 4-11

4.6 Reducing Interference................................................................................................4-12

4.7 Reducing Low L evel Noi se.........................................................................................4-13

4.8 Erasing Weak Echoes ..............................................................................................4-14

4.9 White Marker (MODEL1722C/1723C series)..............................................................4-15

4.10 Picture Advance Spee d............................................................................................4-16

4.10.1 Advancement independent of ship’s speed................................................... 4-16

4.10.2 Advancement synchronized with ship’s speed.............................................. 4-17

4.11 Display Colors (MODEL1722C/1723C series).......................................................... 4-18

4.12 Alarms.....................................................................................................................4-19

4.12.1 Au di o al arm on/ o ff......................................................................................... 4-19

4.12.2 Bottom alarm ................................................................................................ 4-20

4.12.3 Fish alarm..................................................................................................... 4-20

4.12.4 Fish alarm (B/L)............................................................................................ 4-21

4.12.5 Water temperature alarm.............................................................................. 4-22

4.12.6 When an alarm setting is violated................................................................. 4-23

4.13 Water Temperatur e Graph....................................................................................... 4-24

4.14 Changing Pulse Repetition Rate .............................................................................. 4-24

4.15 Interpreting the Sounder Display.............................................................................. 4-25

4.15.1 Zero line....................................................................................................... 4-25

4.15.2 Bottom echo................................................................................................. 4-25

4.15.3 Fish school echoes....................................................................................... 4-26

4.15.4 Surface noise/Aeration................................................................................. 4-26

5. CUSTOMIZING YOUR UNIT..........................................................................5-1

5.1 Generic Setup..............................................................................................................5-1

5.2 Radar Setup................................................................................................................ 5-3

5.2.1 Radar display setup.......................................................................................... 5-3

5.2.2 Radar range setup............................................................................................ 5-6

5.2.3 Function key setup ........................................................................................... 5-7

5.3 Plotter Setup................................................................................................................ 5-9

5.3.1 Navigation options............................................................................................ 5-9

5.3.2 Function key setup ......................................................................................... 5-10

5.4 Chart Setup............................................................................................................... 5-12

5.4.1 Chart offset..................................................................................................... 5-12

5.4.2 FURUNO, Nav-Charts™ chart attributes........................................................ 5-13

5.4.3 C-MAP chart attributes................................................................................... 5-16

5.5 Data Boxes Setup...................................................................................................... 5-20

5.6 Hot Page Setup......................................................................................................... 5-21

5.7 Navigator Setup......................................................................................................... 5-23

5.7.1 Navigation data source................................................................................... 5-23

5.7.2 GPS receiver setup (Set equipped with GP-310B/320B)................................ 5-24

5.7.3 TD displ ay setu p............................................................................................. 5-27

5.8 Nav Data Display Setup............................................................................................. 5-29

5.9 Sounder Setup........................................................................................................... 5-30

5.9.1 System setu p.................................................................................................. 5-30

5.9.2 Sensor set up.................................................................................................. 5-32

5.9.3 Sounding range, zoom range, bottom lock range............................................ 5-33

5.9.4 Function key setup ......................................................................................... 5-34

vii

6. DATA TRANSFER..........................................................................................6-1

6.1 Memory Card Operations.............................................................................................6-1

6.1.1 Formatting memory cards.................................................................................6-1

6.1.2 Saving dat a to a mem ory car d..........................................................................6-2

6.1.3 Playing back data from a mem or y car d.............................................................6-4

6.2 Uploading, Downloading Data......................................................................................6-5

6.2.1 Setting communication software on the PC.......................................................6-5

6.2.2 Uploading or downloading data.........................................................................6-5

6.3 Loading W a yp oint Data from Yeoman..........................................................................6-8

6.4 Receiving Data Via Network Equipment.......................................................................6-9

6.5 Outputting Data Through the Network........................................................................6-10

7. MAINTENANCE, TROUBLESHOOTING ......................................................7-1

7.1 Preventive Maintenance...............................................................................................7-1

7.2 Replacement of Fuse...................................................................................................7-2

7.3 Replacement of Battery................................................................................................7-2

7.4 Simple Troubleshooting................................................................................................7-3

7.4.1 Gener al.............................................................................................................7-3

7.4.2 Radar................................................................................................................7-4

7.4.3 Plotter...............................................................................................................7-5

7.4.4 Sounder............................................................................................................7-6

7.5 Diagnostics..................................................................................................................7-7

7.5.1 Memory I/O test................................................................................................7-7

7.5.2 Test pattern.....................................................................................................7-10

7.5.3 Keyboard, remote controller test.....................................................................7-11

7.6 GPS Status Display....................................................................................................7-12

7.7 Clearing Memories.....................................................................................................7-13

7.8 Error Messages..........................................................................................................7-14

APPENDIX ......................................................................................................AP-1

Menu Overview ............................................................................................................... AP-1

Geodetic Chart List....................................................................................................... AP-12

World Time Chart.......................................................................................................... AP-13

Icons.............................................................................................................................AP-14

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

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

Declaration of Comformity

viii

FOREWORD

A Word to the Owner of the MODEL1722/1722C/1723C Series Marine Radar

FURUNO Electric Company thanks y ou for purchasing the MODEL1722/1722C/172 3C S er ies Mari ne Radar. We are confident you will discover why the FURUNO nam e has become synonymous with quality and reliability.

For over 50 year s FURUNO Elec tric Company has enjoyed an en vi able reputation for quality and reliability throughout the world. This dedic ation to excellence is furthered by our extensiv e global network of agent s and dealers.

Your radar is designed and constructed t o m eet the rigor ous demands of the marine envir onment. However, no machine can perform its intended function unless proper ly installed and maintained. Pl eas e c ar efully read and f ollow the operation and m aintenance pr oc edures set forth in this manual.

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

Thank y ou for consideri ng and pur c hasing FUR UNO.

FOREWORD

Features

The MODEL1722/1722C/1723C series work within our ne w product - network system called the “NavNet.” Each product has an IP address to communicate with NavNet compatible products within the network, using TCP/IP protocol through an Ethernet 10 Base-T network.

The main features are

! Bright 7” screen visible even under direct sunlight.

MODEL1722 series: Monochrome LCD MODEL1722C series: Color LCD MODEL1723C series: High-precision color LCD

! User friendly operation with combination of discrete keys, soft keys and cursor pad. ! Accepts FURUNO and Nav-charts™ (NAVIONICS) or C-MAP NT/NT+ charts (C-MAP).

All names mentioned are registered trademarks of their respective companies.

! Fast chart redraw. ! Built-in NavNet interface circuit board. ! 12-channel GPS Receiver GP -310B with highly accurate position fixing optionall y

available or GP-320B with WAAS (see the note in below.)

! User programmable function keys. ! Video sounder picture available with connection to optional network sounder. ! ARP function (when connecting with MODEL1833/ 1833C series)

SYSTEM CONFIGURATIONS

All NavNet products incorporate a “network circuit board” to integrate each NavNet product on board through an optional LAN cable (Ethernet 10BASE-T). Each NavNet product is assigned an IP address to enable transfer of images between other NavNet products. For example, video plotter pictures can be transferred to a radar and vice versa. Pictures received via the NavN et may be adjusted at the receiving end.

The number of display units which may be installed depends on the number of network sounder connected. For a system incorporating three or more products, a “hub” is required to process data.

For one network sounder: one radar and three plotters For two network sounder: one radar and two plotters

NavNet system

Antenna Unit

(ex. MODEL 1722/1722C/1723C)

Network sounder

ETR-6/10N

ETR-30N

Heading

sensor

External buzzer

Echo sounder

E/S

Navigator

GPS receiver

GP-310B/320B

12-24 VDC

Other NavNet unit

(GD-1700 etc.)

Rectifier*

PR-62

RU-3423

100/110/115/220/230 V AC

1φ, 50/60 Hz

*PR-62: MODEL1722/1722C/1732/1732C/1723C/1733C RU-3423: MODEL1742/1742C/1752/1752C/1762/1762C/1753C/1763C

Display Unit

RDP-130 (monochrome) RDP-131 (color, QVGA) RDP-143 (color, VGA)

Remote Controller RMC-100

NavNet system

SYSTEM CONFIGURATIONS

Two-unit NavNet system

Antenna Unit

GP-310B/320B

Radar data

Plotter data

Two-unit NavNet system

Three-or more unit NavNet system (Max. 4 NavNet cap able displ ay units)

Antenna Unit

GP-310B/320B

HUB

Radar data

Plotter data

Network Sounder

ETR-6/10N

ETR-30N

(option)

Sounder data

Note: The picture disappears 10 seconds after the NavNet cable is disconnected from a "sub" NavNet display unit.

Network Sounder

ETR-6/10N

ETR-30N

(option)

Three-or more unit NavNet system

xii

WHAT IS WAAS?

WAAS, available in North America, is a provider in the worldwide SBAS (Satellite Based Augmentati on System) navigation system. SBAS provides GPS signal corrections to SBAS users, for even better position accuracy, typically better than three meters. Two more SBAS providers are al so current ly under development, MSAS (Multi-Funct ional Satellite Augment at ion System) for Japan and EGNOS (Euro Geostationary Navigation Overl ay Service) for E ur ope. A ll provides will be compatible with one anot her, thus provi ding “seamless” positi on 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

20°S

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 thi s sof tware release, SBAS is still under d evelopment (Providers are expected t o have initi al operations capability from the times shown above.) During this developmental period, which may l ast for several years, there is no guarantee of the accuracy, integrity, continuity, or availabili ty of the SBAS signal. Furuno will accept no respo ns ibility for the use of the signal for other than the above stated purpose. It is the user’s respons ibility to exercise common prudence and navigational judgment whil e using the SBAS signal.

Note: This manual uses “WAAS” when referring to any SBAS provider.

1-1

1. OPERATIONAL OVERVIEW

This chapter provides basic information needed to get you started using your radar. The follow topics are presented:

• Control overview

• Chart card insertion

• Power on/off

• Contrast, brilliance and hue (Color series only) adjustments

• Display selection

• Data boxes

• Function keys

• Simulation display

NOTICE

The brilliance of the LCD is adjustable to match a wide variety of lighting conditions. However, its maximum setting may not be sufficiently bright to permit viewing of the display with polarized sunglasses.

Note: The example screens shown in this manual may not match the screens

you see on your display. The screen you see depends on your system configuration and equipment settings.

1. OPERATIONAL OVERVIEW

1-2

1.1 Operating Controls

1.1.1 Display unit controls

Overview of display un it controls

The radar systems are mainly operated with controls of the display unit (and remote controller). Ten keys are labeled and they provide the function shown on their labels. The five soft keys provide various functions according to current operating mode. The [ENTER] knob mainly functions to register selections on the menu and enter alphanumeric data. The cursor pad’s main function is to move the cursor across the screen. Whenever you operate a key, a single beep confirms operation. Invalid operation causes the unit to emit three beeps.

Cursor pad Selects menu items and options; shifts cursor. Press, release and press again to change setting consecutively.

Selects display mode.

Soft keys

Momentary press:

Registers own ship’s position as a waypoint.

Press three seconds:

Marks man overboard position.

Opens/closes the main menu.

Displays the soft keys for EBL/VRM. Radar: Displays the soft keys for adjustment of gain, A/C SEA, A/C RAIN and FTC.

Sounder: Adjusts gain.

Long press: Turns power on/off. Momentary press: Opens the

display for adjustment of brilliance, etc. For radar, switches STBY and TX.

ENTER knob

Push: Registers options on menus. Rotate: Selects character; adjusts sensitivity

(sounder, radar); chooses menu items and options.

Clears data; erases selected mark.

Opens/closes the alarm menu.

Shows or hides the soft keys, function keys, nav data alternately.

Chart slot

Selects a range.

Control p anel

1. OPERATIONAL OVERVIEW

1-3

Soft keys

The five soft keys’ functions change according to the operation. Their labels for their current functions are shown on the screen to the left of the keys. To hide or show the soft key labels, press the [HIDE/SHOW] key. Each press of the key shows preset soft keys, user function keys or turns off navigation information (at the top of the screen).

SOFT KEYS

Display unit

Some soft keys show the current state of the soft key function in reverse video as shown below.

.250/ 319.9

.125nm SP

H-UP

SIGNAL PROCESS

359.9°R

0.24nm

RETURN

E. AVG*

OFF

I. REJ

LOW

PULSE

SHORT

E. STR

LOW

Current option shown in reverse video

*: Only when MODEL 1833/C series are used as radar source.

Plotter display

1. OPERATIONAL OVERVIEW

1-4

[ENTER] knob

The [ENTER] knob functions to

• Register data

• Enter alphanumeric data such as waypoint name

• Select menu items and options

• Adjust setting

Clockwise rotation of the knob selects an alphabet, symbol or numeric, in one of the sequences shown below. After you have selected desired alphanumeric character push the [ENTER] knob to register your selection.

[ENTER] knob

ENTER knob

Alphabet, sy mbol, numeric

A ! B ! C ! D ! E ! F ! G ! H ! I ! J ! K ! L ! M ! N ! O ! P ! Q ! R ! S ! T ! U ! V ! W ! X ! Y ! Z ! & ! _ ! ’ ! # ! 0 ! 1 ! 2 ! 3 ! 4 ! 5 ! 6 ! 7 ! 8 ! 9

Numerics

0 ! 1 ! 2 ! 3 ! 4 ! 5 ! 6 ! 7 ! 8 ! 9

1. OPERATIONAL OVERVIEW

1-5

1.1.2 Remote controller

SAVE

RANGE

DISP

MOB

ABC1DEF2GHI

MNO

JKL

STU

VWX

YZ&

PQR

GAIN

’#

EBL / VRM

ENT

WPT

MARK ENT

CNTL

CENTER

ALARM

SK3SK1 SK2

HIDE /SHOW

SK4 SK5

TX /STBY

BRILL

CLEAR

TONE

ACQ

Operating distance 90°: Up to 5 m ±45°: Up to 3 m

Replace the batteries (AA) when the distance from which the display unit can be operated shortens.

Note: The remote controller may become damaged if dropped. Mishandling of the remote controller is not covered by the warranty.

Remote controller

Key Function Key Function

RANGE

Same as RANGE key on display unit.

CLEAR

Same as CLEAR key on display unit.

DISP

Same as DISP key on display unit.

Same as MENU key on display unit.

SAVE MOB

Same as SAVE MOB key on display unit.

BRILL Adjusts display brilliance.

Ten keys Enter alphanumerics. TONE Adjusts display contrast.

EBL/VRM

Same as EBL/VRM key on display unit.

TX/STBY

Toggles radar between standby and transmit.

GAIN

Same as GAIN key on display unit.

ACQ

Acquires radar target. (Requires radar source equipped with ARP.)

WPT

Displays “alphabet” WPT list on plotter display.

ALARM

Same as ALARM key on the display unit.

MARK ENT

Same as MARK ENTRY soft key.

HIDE/SHOW

Same as HIDE/SHOW key on display unit.

CENTER

Returns own ship to screen center on plotter display.

SK1 – SK5 (soft keys)

Same as soft keys on display unit.

CNTL

Switches control between displays on combination displays.

ENT

Same as ENTER knob on display unit.

1. OPERATIONAL OVERVIEW

1-6

1.2 Inserting a Chart Card

Your unit reads FURUNO and Nav-Charts™ (NAVIONICS), or C-MAP chart cards, depending on its specifications. Insert the appropriate chart card for your area as follows:

1. Open the chart card slot lid.

Chart slot

Display unit

2. Insert desired chart card groove side up.

3. Close the lid to protect the chart drive.

Note 1: Do not insert or remove the chart card while turning power on. This may

cause the equipment to freeze.

Note 2: Do not remove a card while the chart is being drawn. This may cause

the equipment to freeze.

Note 3: A card remover is supplied to ease removal of chart cards. Attach the

card remover to the right-hand side hole on the card and pull to remove card. You can leave the card remover attached to the card while the card is in the card slot - push the card remover leftward until it contacts the recessed area in the card.

Note 4: For multiple display units, do not use the same chart card type in more

than one display unit.

Chart card and card remover

1. OPERATIONAL OVERVIEW

1-7

1.3 Turning the Unit On/Off

Press the [POWER/BRILL] key to turn the unit on. A beep sounds and the equipment proceeds in the sequence shown below, displaying the product information screen, startup test results and the chart usage disclaimer, in that order. The startup test checks the ROM, RAM, internal battery and backup data for proper operation, displaying the results for each as OK or NG (No Good). If NG appears, an appropriate message appears on the screen. For any NG, try to press any key to go to the chart disclaimer screen, then perform the diagnostic test referring to the paragraph “7.5 Diagnostics.”

RADAR PLOTTER

STATION NAME: RADAR FURUNO ELECTRIC CO., LTD. CHARTS AVAILABLE FLYBRDG = ANB01004 RADAR = ANB01003

STARTUP TEST ROM OK RAM OK BACKUP DATA OK INTERNAL BATTERY OK

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 REGULATIONS.

Product information Startup test Chart disclaimer

PROGRAM No. 03591730**

Host Name

Chart List

** = Program version no. (Two program version numbers. One for NAVIO and one for C-MAP.)

The magnetron in the antenna unit takes about one minutes and thirty seconds to warm up before the radar can be operated. The time remaining for warm up of the magnetron appears at the center of the display, counting down from 1:30 to 0:01. You may press any key at the chart disclaimer screen to show the last-used display, or wait several seconds to let the equipment do it for you.

To turn the unit off, press and hold down the [POWER/BRILL] key until the screen goes dark (approx. 3 sec.). To protect the LCD attach the hard cover. Note that the network sounder will be turned off approx. three minutes after turning off the power.

Note: You are asked if you want to start the simulation mode, which provides

simulated operation of the equipment, the first time you turn on the power (or any time power is applied after a memory reset) the message shown below is displayed. Push the [ENTER] knob to start the simulation mode, or press the [CLEAR] key to start normal operation. For further details about the simulation mode, see the paragraph “1.9 Simulation Display.”

START SIMULATION MODE? YES ... PUSH ENTER KNOB NO ... PUSH CLEAR KEY TO SKIP.

1. OPERATIONAL OVERVIEW

1-8

1.4 Cursor Pad, Cursor

The cursor pad mainly functions to shift the cursor, for measurement of range and bearing to a location (radar) and latitude and longitude position (plotter). Operate the cursor pad to shift the cursor. The cursor moves in the direction of the arrow or diagonal pressed, on the cursor pad.

For the plotter display, the cursor can be turned off with the CENTER soft key. This also returns own ship marker to the screen center.

34° 22. 3456'N 272.4°M TRIP NU 080° 22. 3456'E

15.9 nm 99.9 nm

GOTO CURSOR

MODE

NTH UP

CENTER

MARK

ENTRY

Cursor data L/L position, Range and bearing from own ship to cursor

Cursor

16.0nm

D. BOX ON/ OFF

Cursor

Radar display

Plotter display

.250/ 319.9

.125nm SP

H-UP

359.9°R

0.24nm

RADAR DISPLY

NAV FUNC

ZOOM & D. BOX

SIGNAL PROC

TARGET

Cursor, cursor data

1. OPERATIONAL OVERVIEW

1-9

1.5 Display Brilliance, Panel Brilliance, Contrast, Hue

You can adjust display brilliance, panel brilliance, contrast and hue (MODEL1722C/1723C series only) as shown below.

1.5.1 Display brillianc e, panel brilli an ce

1. Press the [POWER/BRILL] key momentarily. A set of soft keys for

adjustment of brilliance, contrast and hue (MODEL1722C/1723C series only) appear. The last-used adjustment window appears. In the example below the display brilliance adjustment window is shown.

.250/ 319.9

.125nm SP

H-UP

.250/ 319.9

.125nm SP

H-UP

MODEL1722C/1723C series MODEL1722 series

PANEL BRILL

CONTST

/HUE

RETURN

DISPLAY BRILLIANCE

PANEL BRILL

CONTST

BRILL CONTST

RETURN

DISPLAY BRILLIANCE

Current selection is higtlighted.

DISPLY BRILL

RADAR

STBY

RADAR

STBY

BRILL CONTST

Brilliance adjustment s oft keys

2. Press the DISPLY BRILL or PANEL BRILL soft key as appropriate. An

adjustment window appears at the bottom of the screen. This window shows the name of the item selected for adjustment plus current brilliance level, by bar graph.

DISPLAY BRILLIANCE

PANEL BRILLIANCE

Display brilliance Panel brilliance

Display brilliance and panel brilliance window s

3. Adjust the [ENTER] knob, clockwise to raise the setting or counterclockwise

to decrease it. You may also use the soft key pressed at step 2, in which case the item selected is adjusted cyclically, from low to high. Eight levels of display brilliance and panel brilliance are available.

4. Hit the RETURN soft key to finish.

The display brilliance can be adjusted by pressing the [POWER/BRILL] key. If the unit is turned on with minimum display brilliance, press the [POWER/BRILL] key consecutively to adjust the brilliance.

1. OPERATIONAL OVERVIEW

1-10

1.5.2 Contrast

1. Press the [POWER/BRILL] key momentarily.

2. Press the CONTST (monochrome) or CONTST/HUE (color) soft key.

3. For MODEL 1722C/1723C series, two soft keys appear at the pressing of the

CONTST/HUE soft key: CONTST and HUE. Press the CONTST soft key to adjust the contrast.

CONTRAST

Contrast window

4. Adjust the [ENTER] knob, clockwise to raise the setting or counterclockwise to decrease it. You may also use the CONTST soft key, in which case the item selected is adjusted cyclically, from low to high. 16 levels (monochrome) and 10 levels (color) of contrast are available.

5. Press the RETURN soft key to finish.

1.5.3 Hue (MODEL 17 22C/ 17 23C ser i es )

1. Press the [POWER/BRILL] key momentary.

2. Press the CONTST/HUE (MODEL1722C series) or HUE (MODEL1723C series) soft key.

3. Press the HUE soft key to show the hue setting window.

HUE

▲

DAY

NIGHT

TWILIGHT

MANUAL SET

▼

Hue window

4. Operate the cursor pad or [ENTER] knob to select hue desired, referring to the table below. MANUAL SET follows the color settings on the RADAR DISPLAY SETUP for the radar, CHART DETAILS menu for the plotter and SOUNDER MENU for the sounder.

Day Night Twilight Applicable mode

Characters Black Red Green Plotter, radar, sounder Radar ring Green* Red Green* Radar Radar echo Red Orange Yellow Radar Background White Black Blue Plotter, radar Landmass Yellow Light Yellow Dim Yellow Radar

*: Red on C-map

5. Hit the RETURN soft key to finish.

Note: When using the overlay screen, the own ship track will be hidden if the

radar background and own ship track are blue and the “MANUAL” hue setting is used. In this case, set HUE to other position and then return to “MANUAL” to show the own ship track in black.

1. OPERATIONAL OVERVIEW

1-1 1

1.6 Selecting a Display

1.6.1 Display modes

If you have a navigator and network sounder connected, four full-screen displays are available: radar, plotter, and video sounder and navigation data. (MODEL1722C/1723C series have five screens, those mentioned above plus the overlay screen.) In addition to the full-screen display, you can divide the screen into half-screen combination displays to show two sets of images (data).

Full screen

(Ex. radar)

Combination screen

(Ex. radar + sounder)

Overlay screen

(Radar and plotter,

color model only.

Requires L/L data)

Display screens

The table below shows the displays available with each screen type.

Screen type and available display screen

Full scr e en

Combination screen options

Overlay screen options (Color series only)

Radar, plotter, sounder, nav data

Radar, plotter, echo sounder, compass, highway, compass/highway, nav data, overlay

Radar + plotter

1. OPERATIONAL OVERVIEW

1-12

1.6.2 Selecting a display

1. Press the [DISP] key to show the full-screen selection window. The icons of modes not available are marked with “X” mark. PAGE1-PAGE5 are user-arrangeable displays called “hot pages,” which you can configure as you like. For further details, see “5.6 Hot Page Setup.”

PAGE1 PAGE2 PAGE3 PAGE4 PAGE5

RADAR PLOT SNDR NAV OVRLY

· TURN KNOB TO SELECT MODE AND PUSH KNOB TO ENTER.

· PUSH ANY SOFT KEY TO SELECT IMAGE SOURCE.

Basic display screens

Hot pages

Full-screen s election w indow (“overlay” for color model)

2. Rotate the [ENTER] knob to select a basic display screen or a hot page screen.

3. Push the [ENTER] knob. If you selected a basic display screen, a set of combination display screens corresponding to the basic display screen that was selected appear. In the example below, radar combination displays are shown.

PUSH ENTER KNOB.

Radar combination screen s election w indow

4. Operate the [ENTER] knob to select the combination screen display desired and push it to set.

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1-13

1.6.3 Switching control in com bination and overlay screens

A soft key is provided in relevant combination and overlay screens (color series only) to switch control between displays. In the example below, the RADAR CNTRL and PLOTTR CNTRL soft keys enable switching control between the radar and plotter screens in the plotter/radar combination display.

359.9

11.7nm

FISH

WP-002

34° 22. 3456'N 359.9°M

TRIP

080° 22. 3456'E

19.9 kt 99.9 nm

MARK ENTRY

MODE

NTH UP

NAV

POS

PLOTTR

CCNTRL

PLOTTR

CNTRL

CNTL

RADAR

CNTRL

To adjust plotter

To adjust radar

Radar display selected Plotter display selected

16.0nm

3nm LP

H-UP

359.9

11.7nm

FISH

WP-002

34° 22. 3456'N 359.9°M

TRIP

080° 22. 3456'E

19.9 kt 99.9 nm

16.0nm

3nm LP

H-UP

SIGNAL PROC.

RADAR

CNTRL

RADAR DISPL Y

NAV FUNC

T ARGET

ST-BY

How to switch control betw een modes in the plotter/radar c ombinati on display

1. OPERATIONAL OVERVIEW

1-14

1.6.4 Selecting radar source

When other network radar is connected to the equipment, you may select an image source as shown below. This is not necessary when no other network radar is connected. Select one host name for the source though there are two or three radar units on the net.

Note: Turn the power off whenever changing the source.

1. Press the [DISP] key.

2. Press any soft key to show the following display.

RADAR SOURCE

RADAR

- - -

SOUNDER SOURCE* SOUNDER

IP ADDRESS

172.031.003.001

HOST NAME

RADAR

- - -

▲

SELECT SOURCE

EDIT

RETURN

IF THERE IS MORE THAN ONE NETWORK RADAR OR ECHO SOUNDER, YOU MAY SELECT THE IMAGE SOURCES FOR DISPLAY.

*: Do not change this setting.

Select sourc e menu

3. Use the cursor pad to select RADAR SOURCE and press the EDIT key.

RADAR SOURCE

RADAR

- - -

Radar source

Radar source and s ounder source windows

4. Use the cursor pad and [ENTER] knob to enter source host name: ◄ or ► to select position and rotate the [ENTER] knob to select character.

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

6. Confirm that the correct host name is entered.

7. Press the [DISP] key to finish.

8. Turn the power off and on again.

Note: Sources names are determined at installation. For example, the source

names for radars in a two radar system might be “RADAR” and “RADAR1”.

1. OPERATIONAL OVERVIEW

1-15

1.7 Data Boxes

Data boxes, providing navigation data, may be shown on any full-screen display. Up to six data boxes (two in case of large characters) may be shown, and the default data boxes are position (in latitude and longitude), course over ground, speed over ground, trip log and cursor position. The user may choose which data to display, where to locate it, and show or hide it as desired. In addition, data boxes may be set independently for each display mode (radar, plotter, sounder). For how to select data for the data boxes, see paragraph “5.5 Data Boxes Setup”.

.250/ 319.9

.125nm SP

H-UP

Data boxes

MODE

NTH UP

NAV

POS

MARK

ENTRY

D.BOX

ON /OFF

TRIP LOG

177

POSITION 47

58.535'N

122

36.496'W

COG

323.6

SOG

20.0

350.4

0.000 nm

Plotter dis play, showing data boxes

1.7.1 Showing, hiding data boxes with soft key

Radar: ZOOM & D. BOX → D. BOX ON/OFF (EBL/VRM data box, cursor data

box also shown/hidden)

Plotter: D. BOX ON/OFF Sounder: AUTO/D. BOX

→D. BOX ON/OFF

1.7.2 Rearranging data boxes

You may select the location for data boxes as follows:

1. Using the cursor pad, move the cursor to the data box you wish to move. As the cursor enters the box it changes to a hand. Push the [ENTER] knob, and the hand changes to a fist, meaning the box is correctly selected.

2. Use the cursor pad to drag the data box to the location desired and push the [ENTER] knob.

1.7.3 Temporarily erasing a da ta box

You may temporarily erase a data box. Use the cursor pad to place the cursor inside the data box you wish to erase and press the [CLEAR] key. To redisplay the box, press the ZOOM & D.BOX soft key D.BOX soft key to display it.

1. OPERATIONAL OVERVIEW

1-16

1.8 Function Keys

The function keys provide for one-touch call up of a desired function. The default function key settings are as shown in the table below.

Default Setting, Key Label

Function Key

Radar Plotter Echosounder

Heading line on/off, HL

Track on/off, TRK TLL output, TLL

#2 Rings on/off, RNG Edit mark/line, EML Clutter, CLT

#3 Echo trail, TRL Ruler, RUL Signal level, SLV

#4 Offcenter, SFT

Add new waypoint, ADD

Noise limiter, NL

#5 Radar source, RSR

Waypoint alphanumeric list, ALP

Picture advance, PA

1.8.1 Executing a function

1. Press the [HIDE/SHOW] key to replace the preset soft key labels with the function key labels.

34° 22. 3456'N 359.9°M

TRIP

080° 22. 3456'E

19.9 kt 99.9 nm

BRIDGE

FISH

002WP

Function keys

T R K

E M

D A

Plotter

16.0nm

.250/ 319.9

°M

.125nm SP

H-UP

Function keys

TARGET

359.9°R

0.24nm

H L

R N G

T R L

S F T

R S R

Radar

Function keys

2. Press function key desired.

Note: Function keys can be individually programmed for the radar, plotter and

sounder displays. For further details see the following:

Radar: paragraph 5.2.3

Plotter: paragraph 5.3.2 Sounder: paragraph 5.9.4

1. OPERATIONAL OVERVIEW

1-17

1.9 Simulation Display

The simulation display, for use by service technicians for demonstration purposes, provides simulated operation to help acquaint you with the many features your unit has to offer. It allows you to view and control a simulated plotter, radar and sounder picture, without position-fixing equipment, network radar or a network sounder. Most controls are operative, thus you may practice setting destination, enter waypoints, measure range and bearing to a target, etc.

The simulation icon (

) appears when any simulation mode is active.

To start the simulation display;

1. Press the [MENU] key.

2. Press the SYSTEM CONFIGURATION, SYSTEM SETUP and SIMULATION SETUP soft keys in that order.

SIM SETUP

EDIT

RETURN

RADAR

LIVE

PLOTTER

LIVE

SOUNDER

LIVE

SPEED

00.0kt

COURSE

000.0°

LATITUDE

45°35.000’N

LONGITUDE

123°00.000’W

START DATE & TIME

00:00 01.APR.01

RADAR SIMULATION DATA

Simulat ion setup menu

3. Follow appropriate procedure shown below.

Radar

Internally generated echoes

1. Select RADAR, then press the EDIT soft key.

RADAR

▲

SIMULATION 1

SIMULATION 2

LIVE

▼

2. Select SIMULATION 1 and press the [ENTER] knob.

3. Press the [MENU] key to close the menu.

1. OPERATIONAL OVERVIEW

1-18

Antenna unit-generated echoes

1. Select RADAR S IMULATION DATA, then press the EDIT soft key.

2. Select YES and push the [ENTER] knob to erase simul at ion data and get new data. The message “Now getti ng dem o data. Do not turn off display unit.” appears while the unit is receiving r adar data.

Note: I f the network radar could not be found “R adar s ource is not found.

Cannot get demo data.” appears. W ait one minu t e after the message disappears. A ctual time may be longer dependi ng on the system configuration. And if t he radar is not acti ve, the message “Radar is not active. Cannot get demo data.” is di s played. Check that the radar is plugged in and its signal cable is fi r mly fastened.

3. Select RADAR, then press t he E DIT soft key.

4. Select SIMULA TION 2, then pres s the [ENTER] knob.

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

Plotter

1. Select PLOTTER, then pres s t he E DIT soft key.

PLOTTER

▲

SIMULATION

LIVE

▼

2. Select SIMULATIO N, then press the [ENTER] knob.

3. Select SPEED and press th e EDI T soft key.

4. Enter speed (setting r ange, 0-99 kt, default speed, 0 kt) with the

alphanumeric keys and push t he [ENTER] k nob.

5. Select COURSE and press t he E DIT key.

6. Select “ 8 FIGURE” to t r ace the simulat ed s hip’s track i n a figure-eight course,

or enter your own course at DIRECTIO N. Use t he c ur s or pad to select digit and enter val ue with the alphanumeric keys.

7. Press the ENTER soft key.

8. Select LATITUDE and press the EDIT soft key.

9. Enter l atitude (setting range, 85

°N-85°S, default setting, 45°35.000’N) and

push the [ENTER] knob.

10. Select LONGITUDE and press the EDIT soft key.

11. Enter longitude ( setting rang e, 180

°E-180°W, default setting, 125°00.000’W)

and push the [ENTER] knob.

12. Select START DATE & TIME and push the EDI T soft key.

13. Enter start date and time and push the [ENTER] knob.

14. Press the [M E NU] key to close the menu.

1. OPERATIONAL OVERVIEW

1-19

Sounder

1. Select SOUNDER, then press the EDIT soft key.

SOUNDER

▲

SIMULATION 1

SIMULATION 2

LIVE

▼

2. Select SIMULATION 1 (internally generated echoes) or SIMULATION 2 (network sounder-generated echoes), then press the [ENTER] knob.

Note: The depth, shift, bottom-zoom, bottom-lock and bottom discrimination

displays cannot be shown at SIMULATION 1 mode.

3. Press the [MENU] key to close the menu.

1. OPERATIONAL OVERVIEW

1-20

This page is intentionally left blank.

2-1

2. RADAR OPERATION

This chapter covers radar operation, including the ARP (Automatic Radar Plotting) function. ARP requires connection of MODEL1833/1833C series network radar equipped with the ARP circuit board.

2.1 Radar Display

Cursor

359.9°R

0.18nm

H-UP

. / 319.9

°M

.125nm SP

TRAIL 30m

02m30s

G1 IN

G2 OUT

ES L

EAV L

IR L

.250

Range/ range ring interval

Presentation mode

Alarm icon

Battery icon

Zoom area

Zoom window

Guard zone 1

Trail time Trail elapsed time

Guard zone 1 Guard zone 2 Echo stretch

Echo averaging* Interference rejector

Guard zone 2

VRM2

EBL1 VRM1 EBL2

Range ring

Pulselength

Heading M: Magnetic T: True

Heading line

EBL1 range

VRM1 range

Cursor range and bearing (Cursor position may also be shown, in L/L or Loran C TD.)

EBL2 bearing, VRM2 range

EBL1

27.0°R VRM1 0 .158nm

EBL2

327.1°R VRM2 0 .225nm

* = Radar source Model 1833/1833C series radar

Own ship vector* (ARP-equipped model, true vector mode)

North marker

Radar display

2. RADAR OPERATION

2-2

2.2 Transmitting, Stand-by

1. Turn the power on. The products information appears and is then followed by the radar screen. You can display the radar screen at once by pressing the any key.

2. Press the [POWER/BRILL] key momentarily.

3. Press the RADAR STBY soft key to highlight TX on its label.

4. When the radar picture is not required, but you want to keep it in a state of readiness, press the [POWER/BRILL] key momentarily followed by RADAR TX soft key.

5. Press the RETURN soft key to finish.

2.3 Tuning

The radar receiver can be tuned automatically or manually, and the default tuning method is automatic. To adjust manually or switch to automatic tuning, do the following:

1. Press the [MENU] key to display the main menu.

2. Press the RADAR DISPLAY SETUP soft key.

3. Select TUNING and press the EDIT soft key.

AUTO MAN

TUNING

Tuning bar

Tuning window

4. Choose MAN or AUTO as appropriate.

5. For manual tuning, adjust the [ENTER] knob until the tuning bar is at its

longest position.

6. Press the RETURN soft key.

7. Press the [MENU] key to close the menu.

Note: If the auto setting does not provide satisfactory tuning, see the installation

manual for how to adjust tuning.

2.4 Adjusting the Gain

The [GAIN] key adjusts the sensitivity of the radar receiver. It works in a manner similar to the volume control of a broadcast receiver, which amplifies received signals.

The proper setting is such that the background noise is just visible on the screen. If your gain setting is too low, weak echoes may be missed. On the other hand excessive gain yields too much background noise; strong targets may be missed because of the poor contrast between desired echoes and the background noise on the display.

2. RADAR OPERATION

2-3

To adjust the receiver gain, transmit on long range, and then do the following:

1. Press the [GAIN] key. The last-used “adjustment window” is displayed. In the example below, the gain sensitivity adjustment is shown.

.250/ 319.9

.125nm SP

H-UP

GAIN ADJUST

359.9°R

0.24nm

GAIN

A/C SEA

A/C RAIN

FTC

RETURN

GAIN SENSITIVITY

 ¤

AUTO ROUGH

AUTO MODERATE

AUTO CALM

¡

MAN

Item selected for adjustment is highlighted.

.250/ 319.9

.125nm SP

H-UP

GAIN ADJUST

359.9°R

0.24nm

GAIN

A/C SEA

A/C RAIN

RETURN

GAIN SENSITIVITY

 ¤

AUTO ROUGH

AUTO MODERATE

AUTO CALM

¡

MAN

A/C AT ON/OFF

MODEL 1722/1722C/1723C series MODEL 1833/C series

Gain adjustment soft keys

2. If the gain sensitivity window is not displayed, press the GAIN soft key to show it.

GAIN SENSITIVITY

 ¤

AUTO ROUGH

AUTO MODERATE

AUTO CALM

¡

MAN

Gain sensitivity window

3. Press ▲ or ▼ to select AUTO ROUGH, AUTO MODERATE, AUTO CALM, or MAN (manual) as appropriate. Select an AUTO option according to the sea state.

4. For manual adjustment, rotate the [ENTER] knob to adjust. The range of adjustment is 0-100.

5. Press the [GAIN] key on the front panel or the RETURN soft key to finish.

2. RADAR OPERATION

2-4

2.5 Reducing Sea Clutter

2.5.1 How the A/C SEA works

Echoes from waves can be troublesome, covering the central part of the display with random signals known as “sea clutter”. The higher the waves and the higher the antenna is above the water, the further the clutter will extend. Sea clutter may affect radar performance because real targets are sometimes hidden by the echoes of small waves. (See the left-hand figure in the figure below.) When sea clutter masks the picture, adjust the A/C SEA to reduce the clutter.

The A/C SEA reduces the amplification of echoes at short ranges (where clutter is the greatest) and progressively increases amplification as the range increases, so amplification will be normal at those ranges where there is no sea clutter.

A/C SEA adjusted;

sea clutter suppressed

Sea clutter at

screen center

Effect of A/C SEA

2.5.2 Adjusting A/C SEA

A/C SEA should be adjusted so that the clutter is broken up into small dots, and small targets become distinguishable.

1. Press the [GAIN] key.

2. Press the A/C SEA soft key to show the A/C SEA setting window.

A/C SEA

 ¡

AUTO ROUGH

AUTO MODERATE

AUTO CALM

¤

MAN

Model 1722/1722C/1723C

series radar

A/C SEA

Model 1833/C series radar

A/C SEA setti ng window

3. When the radar source i s t he Model 1722/1722C/17 23C series radar,

press ▲ or ▼ to select AUTO ROUGH, AUTO MODERATE, AUTO CALM, or MAN (manual) as appropriate. Select an AUTO option according to sea state.

4. For manual adjustment, rotate the [ENTER] knob to adjust while observing radar echoes. The range of adjustment is 0-100. Do not overadjust the A/C SEA – weak target echoes may be missed.

2. RADAR OPERATION

2-5

5. When the radar source i s t he Model 1833/C series radar, A/C SEA and

A/C RAIN can be automatically adjusted. Press the A/C AT soft key to select ON or OFF as appropriate. When turned on, it overrides A/C SEA and A/C RAIN settings.

6. Press the [GAIN] key on the front panel or RETURN soft key to finish.

2.6 Reducing Precipitation Clutter

The vertical beamwidth of the antenna is designed to see surface targets even when the ship is rolling. However, by this design the unit will also detect rain clutter (rain, snow, hail, etc.) in the same manner as normal targets. Precipitation clutter shows as random dots on the screen.

2.6.1 Adjusting the A/C RAIN

When echoes from precipitation mask solid targets, adjust the A/C RAIN. This split up these unwanted echoes into a speckled pattern, making recognition of solid targets easier.

1. Press the [GAIN] key.

2. Press the A/C RAIN soft key to show the A/C RAIN window.

A/C RAIN

A/C RAIN setting window

3. Rotate the [ENTER] knob to adjust the A/C RAIN affect. The current level is shown on the A/C RAIN level bar in the A/C RAIN window, and the range of adjustment is 0 to 100. Do not overadjust the A/C RAIN – weak target echoes may be missed.

4. Press the [GAIN] key on the front panel or RETURN soft key to finish.

2. RADAR OPERATION

2-6

2.6.2 Adjusting the FTC

To suppress rain clutter from heavy storms or scattered rain clutter, adjust the FTC. The FTC splits up these unwanted echoes into a speckled pattern, making recognition of solid targets easier.

Note: In addition to reducing clutter, the FTC can be used in fine weather to

clarify the picture when navigating in confined waters. However, with the circuit active the receiver is less sensitive. Therefore, turn off the FTC, by setting it for “0”, when its function is not required.

FTC is available when the radar source is the MODEL1722/1723C series radar.

1. Press the [GAIN] key.

2. Press the FTC soft key to show the FTC window.

FTC

FTC setting window

3. Rotate the [ENTER] knob to adjust. The range of adjustment is 0-100. Do not overadjust the FTC – weak target echoes may be missed.

4. Press the [GAIN] key on the front panel or RETURN soft key to finish.

2. RADAR OPERATION

2-7

2.7 Range Scale

The range setting determines the size of the area (in nautical miles) that will appear on your display. in addition, the range setting will also automatically adjust the range ring interval so that accurate range measurements may be made while operating on any range setting.

The range, range ring interval and pulselength appear at the top left-hand corner of the display.

Press the [RANGE (+ or -)] key to change the range scale.

Range scales (nm, sm)

Range 0.125 0.25 0.5 0.75 1 1.5 2 3 4 6 8 12 16 24 36 48 64 72 Ring

Interval

0.0625 0.125 0.125 0.25 0.25 0.5 0.5 1 1 2 2 3 4 6 12 12 16 18

No. of Rings

2 2 4 3 4 3 4 3 4 3 4 4 4 4 3 4 4 4

Range scales ( k m)

Range 0.25 0.5 0.75 1 1.5 2 3 4 6 8 12 16 24 36 48 64 72 Ring

Interval

0.125 0.25 0.25 0.25 0.5 0.5 1 1 2 2 3 4 6 12 12 16 18

No. of Rings

2 2 3 4 3 4 3 4 3 4 4 4 4 3 4 4 4

Note 1: Maximum range depends on the network radar as shown below.

Model 1722, 1722C, 1723C: 24 nm Model 1732, 1732C, 1742, 1742C, 1752, 1752C, 1733C, 1753C, 1833, 1833C: 36 nm Model 1762, 1762C, 1763C, 1933, 1933C: 48 nm Model 1943, 1943C: 64 nm Model 1953C: 72 nm

Note 2: You may choose which ranges to use from the RADAR RANGE SETUP

menu. For details see paragraph 5.2.2.

2. RADAR OPERATION

2-8

2.8 Pulselength

The pulselength in use is displayed at the upper left corner of the display. Appropriate pulselengths are preset to individual range scales. Therefore, you are not usually required to select them. If you are not satisfied with the current pulselength setting, however, it is possible to change it for the 1.5 and 3 nm (sm) ranges (3 and 6 kilometer ranges) as below. Generally, select a longer pulse for longer detection range and shorter pulse for better range discrimination.

1.5 nm, 1.5 sm, 3 km: Short pulse, medium pulse

3 nm, 3 sm, 6 km: Middle pulse, long pulse

1. Press [HIDE/SHOW] key to show the radar soft keys.

2. Set the range to 1.5 or 3 nm, whichever you want to set.

3. Press the SIGNAL PROC. soft key.

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SIGNAL PROCESS

359.9°R

1.40nm

RETURN

E. AVG

OFF

I. REJ

LOW

PULSE

SHORT

E. STR

LOW

Shown when radar source is the Model 1833/C series network radar. Not shown otherwise.

Signal proces s s oft keys

4. Press the PULSE soft key to select the pulselength setting. SHORT or MEDIUM for 1.5 nm, 1.5 sm, 3 km and MEDIUM or LONG for 3 nm, 3 sm, 6 km.

5. Press the RETURN soft key to finish.

2. RADAR OPERATION

2-9

2.9 Presentation Mode

This unit provides four radar presentation modes: head-up, course-up, north-up and true motion.

Heading data is required for modes other than head-up. (When you use the network radar, input the radar source.)

2.9.1 Selecting a presentation mode

1. Press [HIDE/SHOW] key to show the radar soft keys.

2. Press the RADAR DISPLY soft key to show the RADAR DISPLAY soft keys.

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RADAR DISPLAY

359.9°R

0.24nm

SHIFT

HL OFF

RETURN

MODE

HD UP

RINGS

ON /OFF

RADAR DISPLAY

359.9°R

0.24nm

SHIFT

HL OFF

RETURN

MODE

HD UP

RINGS

MED

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H-UP

Current mode setting

Radar display soft keys

3. Press the MODE soft key. Each pressing of the key changes the presentation mode and the presentation mode indication in the sequence of North-up, True Motion, Head-up, and Course-up.

Mode name Indicator on display Soft key label

North up N-UP NTH UP

True motion TR-M TRUE M

Head up H-UP HD UP

Course up CSE UP CSE UP

4. Press the RETURN soft key to finish.

Note: When heading data is lost, the presentation mode automatically goes to

head-up, the heading indication at the screen top shows “- - -.-°” and the

audio alarm sounds. Press the [ALARM] key to acknowledge the alarm. The message “HEADING DATA MISSING” appears. Restore compass signal to show heading indication. Use the MODE soft key to select presentation mode if necessary. The audio alarm may be silenced with the [CLEAR] key.

2. RADAR OPERATION

2-10

2.9.2 Descript io n of pr e se ntatio n mo de s

Head-up

A display without azimuth stabilization in which the line connecting the center with the top of the display indicates own ship’s heading. The targets are painted at their measured distances and in their directions relative to own ship’s heading.

The short line on the bearing scale is the north marker.

Heading Line

North Marker

Head-up presentation mode

Course-up

The radar picture is stabilized and displayed with the currently selected course at the top of the screen. As you change heading, the ship’s heading marker moves. If you select a new course, the picture resets to display the new course at the top of the display.

Heading Line

North Marker

Course-up pr es entation mode

2. RADAR OPERATION

2-1 1

North-up

In the north-up mode, targets are painted at their measured distances and in their true (compass) directions from own ship. North is maintained at the top of the screen. The heading line changes its direction according to the ship’s heading.

Heading Line

North

North-up presentation mode

True motion

Fixed radar targets maintain a constant position on the screen, while your own ship moves across the radar image at the correct speed and heading. A map-like image is displayed, with all moving vessels traveling in true perspective to each other and to fixed landmasses. As your ship’s position approaches the edge of the screen, the radar display is automatically reset to reveal the area ahead of your ship. You can manually reset your ship’s position at any time by pressing the RADAR DISPLAY soft key followed by the SHIFT soft key.

Heading Line

North

True motion presentation mode

2. RADAR OPERATION

2-12

2.10 Measuring the Range

You can measure the range to a radar target three ways: by the range rings, by the cursor, and by the VRM (Variable Range Marker).

2.10.1 Measuring range by range rings

Count the number of rings between the center of the display and the target. Check the range ring interval and judge the distance of the echo from the inner edge of the nearest ring.

To turn the range rings on, do the following:

1. If not displayed, press the [HIDE/SHOW] key to show the radar soft keys.

2. Press the RADAR DISPLY soft key.

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RADAR DISPLAY

359.9°R

0.24nm

SHIFT

HL OFF

RETURN

MODE

HD UP

RINGS

ON /OFF

RADAR DISPLAY

359.9°R

0.24nm

SHIFT

HL OFF

RETURN

MODE

HD UP

RINGS

MED

MODEL1722C/1723C series MODEL1722 series

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Radar display soft keys

3. Press the RINGS soft key to select ON (MODEL1722 series) or desired brilliance (MODEL1722C/1723C series) among LOW, MED and HIGH.

To disappear rings, select OFF.

4. Press the RETURN soft key to finish.

2. RADAR OPERATION

2-13

2.10.2 Measurin g ra ng e b y cursor

Operate the cursor pad to place the cursor intersection on the inside edge of the radar target. The range to the target, as well as the bearing, appears to the right of “+” at the bottom of the display.

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SIGNAL PROC.

RADAR DISPLY

NAV FUNC

TARGET

ZOOM & D. BOX

Cursor

Target

Bearing and range from own ship to cursor position

How to meas ur e r ange and bearing t o a target with the cursor

2. RADAR OPERATION

2-14

2.10.3 Measuring range by VRM

1. Press the [EBL/VRM] key to display the EBL/VRM soft keys.

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EBL VRM

359.9

°R

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EBL1 ON

VRM1 ON

OFFSET

EBL2 ON

VRM2 ON

EBL/VRM soft keys

2. Press the VRM1 ON (dotted ring VRM) or VRM2 ON (dashed ring VRM) soft key to select the desired VRM. The selected VRM’s indication, at the bottom of the screen, is highlighted.

3. Rotate the [ENTER] knob the place the VRM on the inside edge of a radar target. Read the VRM indication to find range to the target.

4. You may hide the EBL/VRM soft keys by pressing the [EBL/VRM] key.

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VRM1

(Dotted line)

VRM2

(Dashed line)

VRM1 range

VRM2 range

Active marker is highlighted.

359.9°R

0.240nm

EBL VRM

EBL1 ON

EBL1

---.-°R VRM1

0.119nm

EBL2

---.-°R VRM2

0.242nm

VRM1 ON

OFFSET

EBL2 ON

VRM2 ON

How to meas ur e r ange with the VRM

2. RADAR OPERATION

2-15

2.10.4 Erasing a VRM, VRM indication

Press appropriate VRM soft key and press the [CLEAR] key. The VRM is erased, and its indication becomes blank.

2.10.5 Erasing EBL/VRM data boxes

Press the EBL or VRM soft key associated with the EBL/VRM data box you wish to erase. Press the [CLEAR] key once or twice to erase the data box.

2.10.6 Hiding EBL/VRM data boxes

Press the ZOOM & D. BOX and D. BOX ON/OFF soft keys to show or hide the EBL/VRM data boxes.

2.10.7 Moving EBL/VRM data boxes

When an EBL/VRM data box is obscuring a target that you need to see, you can move it to another location as shown below. This cannot be done when the EBL/VRM soft keys are shown.

1. Press the [EBL/VRM] key to erase the EBL/VRM soft keys if shown.

2. Using the cursor pad, place the cursor inside the data box you wish to move. As the cursor enters the box it changes to a “hand.” Push the [ENTER] knob, and the hand changes to a fist, meaning the data box is correctly selected.

3. Use the cursor pad to drag the data box to the location desired and push the

[ENTER] knob.

2.11 Measuring the Bearing

There are two ways to measure the bearing to a target: by the cursor, and by the EBL (Electronic bearing Line).

2.11.1 Measuring bearing by cursor

Use the cursor pad to locate the cursor to the center of the target The bearing to the target appears in the range and bearing box at the bottom right-hand corner on the screen, next to the “+” mark.

2.11.2 Measuring bearing by EBL

1. Press the [EBL/VRM] key.

2. Press the EBL1 ON (dotted line EBL) or EBL2 ON (dashed line EBL) soft key

to select the desired EBL. The selected EBL’s indication, at the bottom of the screen, is highlighted.

3. Rotate the [ENTER] knob to bisect the radar target with the EBL. Read the

EBL indication to find the bearing to the target

4. You may hide the EBL/VRM soft keys by pressing the [EBL/VRM] key.

2. RADAR OPERATION

2-16

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EBL1

(Dotted line)

EBL2

(Dashed line)

EBL2 bearing

Active marker is highlighted.

359.9°R

0.24nm

EBL1 bearing

R: Relative

T: True

EBL VRM

EBL1

330.1°R VRM1

-.---nm

EBL2

234.1°R VRM2

-.---nm

EBL1 ON

VRM1 ON

OFFSET

EBL2 ON

VRM2 ON

How to meas ur e bear ing with the EBL

Note: Bearing can be shown Relative to ship’s heading (relative) or in reference

to North (True). This setting may be changed by changing the EBL REFERENCE setting, which is in the RADAR DISPLAY SETUP menu. See the paragraph “5.2.1 Radar display setup.”

2.1 1.3 Erasing an EBL, EBL indication

Press appropriate EBL soft key and press the [CLEAR] key. The EBL is erased and its indication becomes blank.

2.1 1.4 Erasing EBL/VRM data boxes

Press the EBL or VRM soft key associated with the EBL/VRM data box you wish to erase. Press the [CLEAR] key once or twice to erase the data box.

2.1 1.5 Hiding EBL/VRM data boxes

Press the ZOOM & D. BOX and D. BOX ON/OFF soft keys to show or hide the EBL/VRM data boxes.

2.1 1.6 Moving EBL/VRM data boxes

When an EBL/VRM data box is obscuring a target that you need to see, you can move it to another location as shown below. This cannot be done when the EBL/VRM soft keys are shown.

1. Press the [EBL/VRM] key to erase the EBL/VRM soft keys if appears.

3. Use the cursor pad to drag the data box to the location desired and push the

[ENTER] knob.

2. RADAR OPERATION

2-17

2.12 Erasing the Heading Line, North Marker

The heading line indicates the ship's heading in all presentation modes. The heading line is a line from the own ship position to the outer edge of the radar display area and appears at zero degrees on the bearing scale in head-up mode; it changes its orientation depending on the ship orientation in north-up, course-up and true motion modes.

The north marker appears as a short dashed line. In the head-up and course-up modes the north marker moves around the bearing scale as the ship’s heading moves.

To temporarily erase the heading line and north marker, press the RADAR DISPLY soft key followed by the HL OFF soft key. Release the key to redisplay the markers.

2.13 Reducing Noise

Noise, appearing on the displays as random “speckles,” can be reduced as follows:

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

2. Press the RADAR DISPLAY SETUP soft key.

3. Select NOISE REJECTION and press the EDIT soft key.

4. Select OFF, HIGH or LOW as appropriate.

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

6. Press the [MENU] key to close the menu.

2. RADAR OPERATION

2-18

2.14 Reducing Radar Interference

Radar interference may occur when near another shipborne radar that is operating in the same frequency band as your radar. Its on-screen appearance looks like many bright dots either scattered at random or in the form of dotted lines extending from the center to the edge of the display. Interference effects are distinguishable from normal echoes because they do not appear in the same place on successive rotations of the scanner.

Be sure to turn off the interference rejection circuit when no interference exists – weak targets may be missed.

Radar inter ference

1. If not displayed, press the [HIDE/SHOW] key to show the radar soft keys.

2. Press the SIGNAL PROC. soft key.

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SIGNAL PROCESS

359.9°R

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RETURN

E. AVG

OFF

I. REJ

LOW

PULSE

SHORT

E. STR

LOW

Shown when radar source is the Model 1833/C series network radar. Not shown otherwise.

Signal proces s s oft keys

3. Press the I. REJ soft key to choose the interference rejection level desired;

LOW, MED, HIGH or OFF.

4. Press the RETURN soft key to finish.

The display shows IR L (Low), IR M (Medium) or IR H (High) when the interference rejecter is on.

2. RADAR OPERATION

2-19

2.15 Zoom

The zoom feature allows you to double the size of the area selected with the zoom circle, which appears at the bottom right- or left-hand corner on the display. The zoom feature is available on any range but is inoperative in true motion and when the display is shifted.

2.15.1 Zooming in on radar targets

1. If not displayed, press the [HIDE/SHOW] key to show the radar soft keys.

2. Press the ZOOM & D. BOX soft key to show ZOOM D. BOX soft keys.

3. Press the ZOOM ON/OFF soft key to select ON. A solid circle, called the “zoom circle,” appears on the display.

4. Use the cursor pad to set the cursor where you want to zoom.

5. Press the CURSOR FLOAT soft key to fix the zoom cursor position. (The solid circle changes to a dashed one.)

6. To release the cursor, press the CURSOR FLOAT soft key. (The dashed circle changes to a solid one.) Relocate the zoom cursor, then press the CURSOR LOCK key.

7. To quit the zoom function, press the ZOOM ON/OFF soft key to select OFF.

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Zoom circle

Zoom window

001.0°R

0.160nm

ZOOM D. BOX

ARPA TGT ZM

RETURN

ZOOM

ON /OFF

D. BOX ON/OFF

CURSOR

FLOAT

Requires optional ARP Board in 1833/1833C series network radar. Not shown when radar source is otherwise.

Zoom

2.15.2 Zooming ARP, TTM targets

You may zoom in on TTM targets coming into the display. TTM targets can come from a NAVNET connected RADAR, or from other ARP RADAR that is outputting the TTM message. Note: TTM stands for Tracked Target Message. It is a NMEA 0183 data sentence that is an available output from some ARP capable RADAR. TTM target numbers must be displayed to zoom in on tracked targets. This can be done by enabling the target ID number option in the ARP setup menu.

2. RADAR OPERATION

2-20

1. If not displayed, press the [HIDE/SHOW] key to show the radar soft keys.

2. Press the ZOOM/D.BOX soft key to show ZOOM D.BOX soft keys.

3. Press the ZOOM soft key to select ZOOM ON.

4. Press the ARP TGT ZM soft key.

SELECT TARGET NO.

▲

▼

Target no. selection w indow

5. Use the [ENTER] knob to select number (1-10) and then push the [ENTER] knob. If the target does not exist several beep sounds and the zoom function is cancelled.

To cancel, press the CURSOR LOCK soft key.

Note: The zoom window blends in with the background when the background

color for the radar picture is white. If the window is difficult to see change the background color.

2.16 Shifting the Picture

Own ship position, or sweep origin, can be displaced manually or automatically to expand the view field without switching to a larger scale.

2.16.1 Manual shift

The sweep origin can be shifted in any presentation mode to a point specified by the cursor by up to 60% of the range in use in any direction.

1. Locate the cursor anywhere within the effective radius of the display.

2. If not displayed, press the [HIDE/SHOW] key to show the radar soft keys.

3. Press the RADAR DISPLY soft key.

4. Press the SHIFT soft key.

5. Press the MANUAL soft key to shift. The heading line shifts to the cursor location. SHIFT appears at right-hand corner of the display.

6. Press the RETURN soft key to finish.

7. To cancel shift, press the RADAR DISPLY, SHIFT and OFF soft keys in that order.

2. RADAR OPERATION

2-21

Cursor

Place cursor where desired.

Press the MANUAL soft key.

SHIFT

Shifting the pic t ur e m anually

2.16.2 Automatic shift

In the head-up mode, the amount of shift is automatically calculated with speed. The maximum shift amount is limited to 60% of the range in use. For example, if you set the shift speed setting for 15 knots and the ship is running at 10 knots, the amount of shift will be 40%. The formula for determining shift amount is as shown below.

Ship's speed Shift speed setting

X 0.6 = Amount of shift(%)

Setting automatic shi ft maximum speed

1. If not displayed, press the [HIDE/SHOW] key to show the radar soft keys.

2. Press the RADAR DISPLY soft key.

3. Press the SHIFT soft key to show the shift soft keys.

4. Press the AUTO S.SPD soft key to display the auto ship speed setting window.

AUTO SHIP SPEED

Auto ship speed setting window

5. Adjust the cursor pad or [ENTER] knob to set the maximum speed of your vessel and then push the [ENTER] knob or the ENTER soft key to set. The setting range is 1-999 kt and the default setting is 15 kt.

Automatic shift

Press the AUTO key to automatically shift the sweep origin. To cancel shift, press the RADAR DISPLAY, SHIFT and OFF soft keys.

2. RADAR OPERATION

2-22

2.17 Using the Offset EBL

The offset EBL can be used to predict a potential collision course, and can also be used to measure the range and bearing between two targets.

2.17.1 Predicting a collision course

The procedure below may be used to check if a radar target is on a collision course with your vessel.

1. Press the [EBL/VRM] key to show the EBL/VRM soft keys.

2. Press the EBL1 ON soft key to turn on the EBL1.

3. Press the OFFSET soft key. The origin of EBL1 moves to the cursor position and an “X” appears at the cursor position.

4. Use the cursor pad to place the cursor on the radar target which looks like it might be on a collision course with own ship.

5. Push the [ENTER] knob to fix the origin position.

6. After waiting for a few minutes (at least three minutes), rotate the [ENTER]

knob so the EBL bisects the target at the new position. If the target tracks along the EBL towards the center of the display (your ship’s position), the target may be on a collision course.

7. To cancel the offset EBL, press the OFFSET soft key.

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Initial target position

Target tracked here

359.9°R .0.240nm

EBL VRM

EBL1 ON

VRM1 ON

OFFSET

EBL2 ON

VRM2 ON

EBL1

45.0°R VRM1

-.---nm

Predicting collision cour s e with the offset EBL

2. RADAR OPERATION

2-23

2.17.2 Measurin g rang e & be ar in g be twe en two targets

The procedure which follows shows how to measure the range and bearing between two targets, using the targets “A” and “B” in the figure below as an example.

1. Operate the cursor pad to place the cursor on the target “A”.

2. Press the [EBL/VRM] key to show the EBL/VRM soft keys.

3. Press the EBL1 ON soft key to turn on the EBL1.

4. Press the OFFSET soft key. The origin of EBL1 and VRM1 moves to the cursor position, which is marked with an “X.”

5. Rotate the [ENTER] knob so the EBL bisects the target “B”.

6. Press the [ENTER] knob.

7. Press the VRM1 ON soft key and then rotate the [ENTER] knob to place the VRM1 on the inner edge of the target “B”.

8. Look at the indications for VRM1 and EBL1 to find the range and bearing between the two targets.

9. To cancel the offset EBL, press the OFFSET key.

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0.24nm

Target A

Target B

Bearing and range between target A and target B

EBL VRM

EBL1 ON

VRM1 ON

OFFSET

EBL2 ON

VRM2 ON

EBL1

45.0°R VRM1

0.125nm

Measuring r ange and bearing between tw o targets

2. RADAR OPERATION

2-24

2.18 Echo Trails

Echo trails are simulated afterglow of target echoes that represent their past movements relative to own ship. This function is useful for alerting you past possible collision situations.

Echo trail

Sample echo trails

2.18.1 Trail time

1. If not displayed, press the [HIDE/SHOW] key to show the radar soft keys.

2. Press the TARGET soft key.

3. Press the TRAIL soft key.

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HIGH

MODEL1722C/1723C series MODEL1722 series

359.9°R

0.24nm

359.9°R

0.24nm

TRAIL

TRAIL TIME

TRAIL COLOR

RETURN

GRAD

SINGLE

TRAIL

TRAIL TIME

RETURN

BRILL HIGH

TRAIL

ON /OFF

TRAIL

ON /OFF

Trail soft keys

4. Press the TRAIL TIME soft key to show the trail time window.

TRAIL TIME

▲

15 seconds

30 seconds

1 minute

3 minutes

6 minutes

15 minutes

30 minutes

CONTINUOUS

▼

Trail time window

2. RADAR OPERATION

2-25

5. Use the cursor pad to select time desired.

6. Press the ENTER soft key to finish.

2.18.2 Starting echo trails

1. If not displayed, press the [HIDE/SHOW] key to display the radar soft keys.

2. Press the TARGET and TRAIL soft keys.

3. Press the TRAIL ON/OFF to select ON.

4. Press the RETURN soft key twice to finish.

“TRAIL,” the echo trail time selected and elapsed time appear at the top right-hand corner of the display. Then, afterglow starts extending from all targets. Trails are restarted when the range or mode is changed, and zoom or shift is turned on.

For continuous trails the maximum continuous trail time is 99 minutes and 59 seconds. When the elapsed time clock counts up to that time, the elapsed time display resets to zero and trail begins again.

To turn off echo trail, press the TRAIL ON/OFF soft key to select OFF at step 3 n the above procedure.

Note: No echo trails are shown where a tx sector blanking area is set.

2.18.3 Trail brilliance (M ODEL1722 seri es)

Trail brilliance can be selected to high or low as below.

1. If not displayed, press the [HIDE/SHOW] key to display the radar soft keys.

2. Press the TARGET and TRAIL soft keys.

3. Press the BRILL soft key to select HIGH or LOW.

4. Press the RETURN soft key twice to finish.

2.18.4 Trail gradatio n (M OD EL 172 2C / 172 3C serie s)

The echo trails can be shown in single or multiple gradations. Multiple gradation paints the trails thinner with time, like the afterglow on an analog PPI radar.

1. If not displayed, press the [HIDE/SHOW] key to display the radar soft keys.

2. Press the TARGET and TRAIL soft keys.

3. Press the GRAD soft key to select SINGLE or MULTI as appropriate.

Multitone Monotone

Multitone and monotone trails

4. Press the RETURN soft key twice to finish.

2. RADAR OPERATION

2-26

2.18.5 Trail color (MODE L1 72 2C /1 72 3C ser i es)

The MODEL1722C/1723C series may be shown echo trails in blue, yellow, green or white.

1. If not displayed, press the [HIDE/SHOW] key to display the radar soft keys.

2. Press the TARGET, TRAIL and TRAIL COLOR soft keys.

TRAIL COLOR

▲

BLUE

YELLOW

GREEN

WHITE

▼

Trail color window

3. Use the cursor pad to select the color desired.

4. Press the ENTER soft key.

5. Press the RETURN soft key twice to finish.

2. RADAR OPERATION

2-27

2.19 Echo Stretch

Normally, the reflected echoes from long range targets appear on the display as weaker and smaller blips even though they are compensated by the radar’s internal circuitry. The echo stretch function magnifies these small blips in all ranges. Two types of echo stretch are available: ES LOW which stretches echoes in bearing direction and ES HIGH which stretches them in both range and bearing directions.

"LOW" Echo stretch "HIGH" Echo stretch

Bearing direction

Range direction

Echo Stretch OFF

Target

Types of echo stretch

This function magnifies not only targets but also sea clutter and radar interference. For this reason, be sure sea clutter and radar interference are properly suppressed before activating the echo stretch.

1. If not displayed, press the [HIDE/SHOW] key to display the radar soft keys.

2. Press the SIGNAL PROC. soft key.

3. Press the E. STR soft key to select HIGH, LOW or OFF as appropriate.

4. Press the RETURN soft key to finish.

The display shows ES H (High) or ES L (Low) when the echo stretch is on.

2. RADAR OPERATION

2-28

2.20 Echo Averaging

The echo average feature, available with selection of a Model 1833/C series network radar as radar source, effectively suppresses sea clutter. Echoes received from stable targets such as ships appear on the screen at almost the same position during every rotation of the antenna. On the other hand, unstable echoes such as sea clutter appear at random positions.

To distinguish real target echoes from sea clutter, echo average performs scan-to-scan correlation. Correlation is made by storing and averaging echo signals over successive picture frames. If an echo is solid and stable, it is presented in its normal intensity. Sea clutter is averaged over successive scans resulting in the reduced brilliance, making it easier to discriminate real targets from sea clutter.

To properly use the echo average function, it is recommended to first suppress sea clutter with the A/C SEA control and then do the following:

1. If not displayed, press the [HIDE/SHOW] key to display the radar soft keys.

2. Press the SIGNAL PROC. soft key.

3. Press the E. AVG soft key to select desired echo averaging.

OFF: No averaging

LOW: Helps distinguish targets from sea clutter and suppresses brilliance

of unstable echoes.

MED: Distinguishes small stationary targets such as navigation buoys.

HIGH: Stably displays distant targets.

The display shows EAV L, EAV M or EAV H when echo averaging is on.

(a) Echo average OFF (b) Echo average ON

Effect of echo averaging

4. Press the RETURN soft key to finish.

2. RADAR OPERATION

2-29

2.21 Outputting TLL Data

Target position data can be output to units of the network and shown on their plotter screen, with the waypoint mark. This function requires position and heading data.

1. If not displayed, press the [HIDE/SHOW] key to display the radar soft keys.

2. Operate the cursor pad to place the cursor on the target whose position you wish to output.

3. Press the TARGET soft key.

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TARGET

TRAIL

TLL OUTPUT

ACQ

TARGET INFO

RETURN

Shown with selection of 1833/C series network radar equipped with ARP function as source. Not shown otherwise.

TARGET sof t keys

4. Press the TLL OUTPUT soft key to output target position data.

5. Press the RETURN soft key to finish.

Note: The screen of the TLL recipient may be temporarily interrupted when

receiving TLL from another NavNet display unit. Press any key to restore normal operation.

2. RADAR OPERATION

2-30

2.22 Guard Alarm

The guard alarm allows the operator to set the desired range and bearing for a guard zone. When ships, islands, landmasses, etc. violate the guard zone, an audio alarm sounds and the offending target blinks to call the operator’s attention.

CAUTION

• The alarm should not be relied upon as

the sole means for detecting possible collision situations.

• A/C SEA, A/C RAIN and GAIN controls should be properly adjusted to be sure the alarm system does not overlook target echoes.

2.22.1 Setting a guard alarm zone

To set a guard alarm zone, set the radar to transmit and do the following:

1. Press the [ALARM] key.

2. Use the cursor pad to set the cursor on the top left corner (or top right corner) of the guard zone you want to set, then press the SET GUARD1 or SET GUARD2 soft key, depending on which guard zone you want to set.

3. Use the cursor pad to set the cursor on the bottom right corner (or top left corner) of the guard zone area and push the [ENTER] knob.

4. Press RETURN soft key to finish.

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H-UP

317.2°R

0.230nm

ALARM

39.9°R .0.230nm

V R M

.125n m

.032nm

E B L

19.9 T

NO ALARM

(1) Drag cursor to top (or bottom) corner for guard zone and press the SET GUARD1 or SET GUARD2 soft key.

(2) Drag cursor diagonally to bottom (or top) corner for guard zone and press the [ENTER] knob.

MOVE +CURSOR TO ANOTHER CORNER OF GUARD1 AND PUSH KNOB TO SET.

ALARM GUARD 1

SET GUARD1

ERASE GUARD1

SET GUARD2

RETURN

SET GUARD1

SET GUARD2

RETURN

How to set a guard alarm z one

2. RADAR OPERATION

2-31

The equipment then searches for targets inside the guard zone to determine the guard alarm type. If a target is found inside the guard zone the guard zone type becomes an “Outward guard alarm”, and any target exiting, the guard zone will trigger an alarm. If no target is found the guard zone type becomes an “Inward guard alarm”, and any targets entering the guard zone will trigger the alarm. The guard alarm type is shown as G1 (G2) IN or G1(G2) OUT.

Note 1: When the radar range is less than the guard zone range, ”G1 (G2) IN” or

“G1 (G2) OUT” changes to “G1 (G2) ***.” The guard alarm function is not available while this indication appears.

Note 2: If the network radar is set to standby while the guard alarm is active, the

guard alarm is cancelled. The guard alarm is redisplayed when the radar is set to transmit again.

2.22.2 When the alarm is violated…

Any radar target violating the guard zone will flash, the audio alarm sounds, and the alarm icon appears (red on the color model). Additionally the message “TARGET ENTERED INTO GUARD1(GUARD2)” or “TARGET LEFT FROM GUARD1(GUARD2)” is displayed at the bottom of the screen, depending on the guard zone type. Press the [CLEAR] key to silence the alarm.

2.22.3 Canceling the guard alarm

1. Press the [ALARM] key to show the ALARM menu.

2. Press the ERASE GUARD1 or ERASE GUARD2 soft key as appropriate.

3. Press the RETURN soft key to finish.

2. RADAR OPERATION

2-32

2.23 Watchman

2.23.1 How watchman works

The watchman function periodically transmits radar pulses for one minute to check for targets in a guard zone. If a target is found in the zone, watchman is cancelled, the audio alarm sounds and the radar continues transmitting. If no target is found the radar goes into standby, for the number of minutes selected on the RADAR DISPLAY SETUP menu. This feature is useful when you do not need the radar’s function continuously but want to be alerted to radar targets in a specific area. “WTCH” appears at the top left corner when Watchman is active.

ST-BY

5,10 or 20 min

1 min

Watchman starts

5,10 or 20 min

ST-BY

* Beeps emitted just before radar transmits.

How watchman works

2.23.2 Turning on/ o ff w at chman

1. If not displayed, press the [HIDE/SHOW] key to display the radar soft keys.

2. Press the NAV FUNC soft key.

3. Press the W. MAN ON/OFF soft key to select ON or OFF as appropriate.

4. Press RETURN soft key to finish.

Note: When the watchman is activated and no guard zone is active, the

message “PLEASE SET GUARD ZONE. PUSH ANY KEY TO CONTINUE.” appears. Press any key and then set a guard zone.

2.23.3 Setting watchman stand-by interval

The watchman standby period interval, that is, the number of minutes the radar is in standby, can be set to 5, 10 or 20 minutes as follows:

1. Press the [MENU] key.

2. Press the RADAR DISPLAY SETUP soft key.

3. Select WATCHMAN TIME and press the EDIT soft key.

WATCHMAN TIME

 ¡ ¡

5 minutes 10 minutes 20 minutes

Watchman window

4. Select time desired and press the ENTER soft key.

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

2. RADAR OPERATION

2-33

2.24 Waypoint Marker

A waypoint marker, showing waypoint position output from a navigation device, may be inscribed on the radar display. You may show or hide this marker as desired.

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0.24nm

NAV FUNC

RETURN

W. MAN ON/OFF

WPT MK

ON /OFF

Waypoint marker

1. If not displayed, press the [HIDE/SHOW] key to display the radar soft keys.

2. Press the NAV FUNC soft key.

3. Press the WPT MK ON/OFF soft key to select ON or OFF as appropriate.

4. Press the RETURN soft key to finish.

2. RADAR OPERATION

2-34

2.25 ARP (option), TTM operation

When the radar source is ARP-equipped Model 1833/C series network radar, you can manually and automatically acquire and track 10 targets. Once a target is acquired automatically or manually it is automatically tracked within 0.1 to 32 nm. When the FURUNO heading sensor PG-1000 is connected, RMC sentence (NMEA) is required for true heading data.

Alternatively, you can display the tracks of other ships by receiving the data sentence “TTM” through the NETWORK or NMEA port. However, targets cannot be acquired.

Usage precautions for ARP

WARNING

No one navigational aid should be relied upon for the safety of vessel and crew. The navigator has the responsibility to check all aids available to confirm position. Electronic aids are not a substitute for basic navigational principles and common sense.

• This auto plotter automatically tracks an automatically or manually acquired radar target and calculates its course and speed, indicating them by a vector. Since the data generated by the auto plotter are based on what radar targets are selected, the radar must always be optimally tuned for use with the auto plotter, to ensure required targets will not be lost or unwanted targets such as sea returns and noise will not be acquired and tracked.

• A target does not always mean a land mass, reef, ships or other surface vessels but can imply returns from sea surface and clutter. As the level of clutter changes with environment, the operator should properly adjust the A/C SEA, A/C RAIN and GAIN controls to be sure target echoes are not eliminated from the radar screen.

CAUTION

The plotting accuracy and response of this auto plotter meets IMO standards. Tracking accuracy is affected by the following:

• Tracking accuracy is affected by course change. One to two minutes is required to restore vectors to full accuracy after an abrupt course change. (The actual amount depends on gyrocompass specifications.)

• The amount of tracking delay is inversely proportional to the relative speed of the target. Delay is on the order of 15-30 seconds for high relative speed; 30-60 seconds for low relative speed.

Display accuracy is affected by the following:

• Echo intensity

• Radar transmission pulsewidth

• Radar bearing error

• Gyrocompass error

• Course change (own ship or target)

2. RADAR OPERATION

2-35

2.25.1 Activating/deactivating ARP, TTM

1. Press the [MENU] key followed by the ARP SETUP soft key to show the ARP SETUP menu.

ARP TARGET INFO

INTERNAL ARP

CANCEL ALL TARGETS

ARP VECTOR MODE

TRUE

ARP VECTOR TIME

30 minutes

HISTORY INTERVAL

OFF

CPA

OFF

TCPA

30 seconds

AUTO ACQUISITION AREA

OFF TARGET ID NUMBER OFF

ARP SETUP

EDIT

RETURN

ARP setup menu

2. Select ARP TARGET INFO, and then press the EDIT soft key to show the ARP target info window.

ARP TARGET INFO

▲

¡ ¡

▼

INTERNAL ARP EXTERNAL ARP OFF

ARP target info window

3. Select INTERNAL ARP, EXTERNAL ARP or OFF as appropriate.

INTERNAL ARP: The radar source must be the MODEL1833/C series radar.

Select this item also for a NavNet unit being fed ARP targets.

EXTERNAL ARP: Receive TTM data sentence via NETWORK or NMEA port.

Target tracks are shown but targets cannot be acquired.

OFF: Turns off the ARP or TTM display.

4. Press the ENTER soft key.

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

2. RADAR OPERATION

2-36

2.25.2 Acquiring an d tr ac king targets (ARP only)

Ten targets may be acquired and tracked manually and automatically. When you attempt to acquire an eleventh target, the message “ARP FULL – ALREADY TRACKING 10 TARGETS!” appears for five seconds. To acquire another target, terminate tracking of an unnecessary target as shown in the paragraph 2.25.4.

Manual acquisition

1. If not displayed, press the [HIDE/SHOW] key to display the radar soft keys.

2. Press the TARGET soft key.

3. Place the cursor on the target to acquire and press the ACQ soft key.

4. Press the RETURN soft key.

The plot symbol changes its shape according to its status as below. A vector appears about one minute after acquisition, indicating the target’s motion trend.

At acquisition 1 min. after

acquisition

3 min. after acquisition

01*

Vector

* = Target number shown when TARGET ID NUMBER is turned on in the ARP SETUP menu.

Target Number

ARP plot s y mbols

Automatic acquisition

The ARP can acquire up to ten targets automatically by setting an automatic acquisition area. When automatic acquisition is selected after acquiring targets manually, only the remaining capacity for targets may be automatically acquired. For example, if seven targets have been manually acquired, three targets may be automatically acquired.

1. Press the [MENU] key to show the main menu.

2. Press the ARP SETUP soft key to show the ARP SETUP menu.

3. Operate the cursor pad to select AUTO ACQUISITION AREA.

4. Press the EDIT soft key to show the automatic acquisition area window.

AUTO ACQ. AREA

▲

▼

OFF ON

Automatic acquisition area window

5. Select ON.

6. Press the ENTER soft key.

2. RADAR OPERATION

2-37

7. Press the [MENU] key to close the menu. An acquisition area of 2.0 to 2.5

miles in range and ±45º on either side of the heading line in bearing appears.

Note: Targets being tracked in automatic acquisition are continuously

tracked when switching to manual acquisition.

Automatic acquisition area

45° port

45° starboard

2.0 - 2.5 nm

Automatic acquisition area

2.25.3 Displaying target number (internal, external ARP)

Target number can be shown for ARP and TTM targets as below.

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TARGET

TRAIL

TLL OUTPUT

ACQ

TARGET INFO

RETURN

ARP Target Number

359.9°R

0.240nm

ARP target number

1. Press the [MENU] key.

2. Press the ARP SETUP soft key.

3. Select TARGET ID NUMBER.

4. Press the EDIT soft key.

5. Select ON or OFF (default setting) as appropriate.

6. Press the ENTER soft key.

7. Press the [MENU] key to close the menu.

2. RADAR OPERATION

2-38

2.25.4 Terminating tracking of ARP targets

When 10 targets have been acquired, no more targets may be acquired unless targets are cancelled. If you need to acquire additional targets, you must first cancel one or more individual targets, or all of the targets, using one of the procedures below.

Terminatin g t racking of selected targets

1. Place the cursor on the target to terminate tracking.

2. Press the [CLEAR] key to erase to terminate tracking and erase the target.

T erminating tracking of all targets

1. Press the [MENU] key followed by the ARP SETUP soft key.

2. Select CANCEL ALL TARGETS.

3. Press the EDIT soft key.

CANCEL ALL TARGETS

▲

▼

YES NO

Cancel all targets window

4. Select YES.

5. Press the ENTER soft key.

6. Press the [MENU] key to close the menu.

2. RADAR OPERATION

2-39

2.25.5 Setting vec tor attr i b utes (ARP)

What is a vecto r?

A vector is a line extending from a tracked target which shows speed and course of the target. The vector tip shows an estimated position of the target after the selected vector time elapses. It can be useful to extend the vector length in order

to evaluate the risk of collision with any target.

Vector

Vector reference, vector time

You may reference the vectors to North (True) or ship’s heading (relative) as desired. Vector time can be set to 30 seconds, 1, 3, 6, 15 or 30 minutes.

1. Press the [MENU] key followed by the ARP SETUP soft key to show the ARP SETUP menu.

2. Operate the cursor pad to select ARP VECTOR MODE.

3. Press the EDIT soft key to show the vector mode window.

ARP VECTOR MODE

RELATIVE TRUE

Vect or mode window

4. Select TRUE or RELATIVE as appropriate.

5. Press the ENTER soft key.

6. Select ARP VECTOR TIME, and then press the EDIT soft key to show the ARP vector time window.

ARP VECTOR TIME

▲

¡ ¡ ¡ ¡ ¡

▼

30 seconds 1 minute 3 minutes 6 minutes 15 minutes 30 minutes

ARP vector time window

7. Operate the cursor pad to select vector time among 30 sec, 1 min, 3 min, 6 min, 15 min and 30 min.

8. Press the ENTER soft key.

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

2. RADAR OPERATION

2-40

2.25.6 Displaying past position display (ARP)

This ARP can display time-spaced dots (maximum 10 dots) marking the past positions of any targets being tracked. You can evaluate a target’s actions by the spacing between dots. Below are examples of dot spacing and target movement.

(a) Ship turning

(b) Ship running straight

(d) Ship increased speed

Past posit ion displays

To turn the past position display on or off:

1. Press the [MENU] key followed by the ARP SETUP soft key.

2. Operate the cursor pad to select HISTORY INTERVAL.

3. Press the EDIT soft key to show the plot interval window.

HISTORY INTERVAL

▲

¡ ¡ ¡ ¡

▼

OFF 30 seconds 1 minute 3 minutes 6 minutes

History interval wi ndow

4. Operate the cursor pad to select plotting interval among 30 sec, 1 min, 3 min and 6 min, or select OFF to turn off the past position display.

5. Press the ENTER soft key.

6. Press the [MENU] key to close the menu.

2. RADAR OPERATION

2-41

2.25.7 ARP, TTM target data

This ARP calculates motion trends (range, bearing, course, speed, CPA and TCPA) of all target been tracked. You can show this data for a tracked target as below. TARGET ID NUMBER, in the ARP SETUP menu, must be turned on to show ARP target data.

1. Place the cursor on the target whose data you want to see.

2. If not displayed, press the [HIDE/SHOW] key to display the radar soft keys.

3. Press the TARGET and TARGET INFO soft keys. The data of the selected target appears at the bottom left-hand corner of the display. (If an EBL/VRM data box is displayed the ARP data box will be under it.)

4. Press the RETURN soft key to finish.

5. To erase the ARP target data box, select the corresponding target with the

cursor and press the [CLEAR] key.

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TARGET

TRAIL

TLL OUTPUT

ACQ

TARGET INFO

RETURN

ARP Target

No.01 VECTOR TRUE 15min CSE 359.9°T SPD 12.5kt CPA 2nm TCPA 12.35

CPA and TCPA Course and Speed Target No., Vector Reference (True), Vector Time

Cursor

ARP target data

2. RADAR OPERATION

2-42

2.25.8 CPA/TCPA alarm (ARP)

When the predicted CPA of any target becomes smaller than a preset CPA alarm range or its predicted TCPA less than a preset TCPA alarm limit, an audio alarm sounds, which you may silence with the [CLEAR] key. In addition, the target plot symbol of the offending target changes to a triangle and flashes together with its vector. Press the [ALARM] key and the message COLLISION ALARM appears. Press the CLEAR ALARM soft key to acknowledge the alarm. The flashing of the triangle plot symbol continues until you intentionally terminate tracking of the target. The ARP continuously monitors the predicted range at the Closest Point of Approach (CPA) and predicted time to CPA (TCPA) of each target to own ship.

Provided that this feature is used correctly, it will help prevent the risk of collision by alerting you to threatening targets. It is important that gain, A/C SEA, A/C RAIN and other radar controls are properly adjusted and the ARP is set up so that it can track targets effectively.

CPA/TCPA alarm ranges must be set up properly taking into consideration the size, tonnage, speed, turning performance and other characteristics of own ship.

CAUTION

The CPA/TCPA alarm should never be relied upon as the sole means for detecting the risk of collision. The navigator is not relieved of the responsibility to keep visual lookout for avoiding collisions, whether or not the radar or other plotting aid is in use.

Follow the steps shown below to set the CPA/TCPA alarm range:

1. Press the [MENU] key followed by the ARP SETUP soft key.

2. Operate the cursor pad to select CPA.

3. Press the EDIT soft key to show the CPA window.

CPA

▲

¡ ¡ ¡ ¡ ¡ ¡

▼

OFF

0.5nm 1nm 2nm 3nm 5nm 6nm

CPA window

4. Select a CPA limit desired by the cursor pad.

5. Press the ENTER soft key. The ARP SETUP menu reappears.

6. Press the cursor pad to select TCPA.

7. Press the EDIT soft key to show the TCPA window.

2. RADAR OPERATION

2-43

TCPA

▲

¡ ¡ ¡ ¡ ¡ ¡ ¡

▼

30 seconds 1 minute 2 minutes 3 minutes 4 minutes 5 minutes 6 minutes 12 minutes

TCPA window

8. Select a TCPA limit.

9. Press the ENTER soft key.

10. Press the [MENU] key to close the menu.

2.25.9 Lost target alarm (ARP)

When the system detects a lost target, the target symbol becomes a diamond and tracking is discontinued after one minute.

Lost target mark

Canceling a lost target

1. Place the cursor on the target.

2. Press the [CLEAR] key.

2. RADAR OPERATION

2-44

2.26 Interpreting the Radar Display

2.26.1 General

Minimum and maximum ranges

Minimum r ange

The minimum range is defined by the shortest distance at which, using a scale of

1.5 or 0.75 nm, a target having an echoing area of 10 m

is still shown separate from the point representing the antenna position. It is mainly dependent on the pulselength, antenna height, and signal processing such as main bang suppression and digital quantization.

Maximum r ange

The maximum detecting range of the radar, Rmax, varies considerably depending on several factors such as the height of the antenna above the waterline, the height of the target above the sea, the size, shape and material of the target, and atmospheric conditions.

Under normal atmospheric conditions, the maximum range is equal to the radar horizon or a little shorter. The radar horizon is longer than the optical one by about 6% because of the diffraction property of the radar signal. Rmax is given in the following equation.

= 2.2 x (h1 + h2

)

where Rmax: radar horizon (nautical miles) h1: antenna height (m) h2: target height (m)

Radar horizon

Optical horizon

Radar horizon

For example, if the height of the antenna above the waterline is 9 meters and the height of the target is 16 meters, the maximum radar range is;

= 2.2 x (9 + 16 ) = 2.2 x (3 + 4) = 15.4 nm

It should be noted that the detection range is reduced by precipitation (which absorbs the radar signal).

2. RADAR OPERATION

2-45

Radar resolution

There are two important factors in radar resolution (discrimination): bearing resolution and range resolution.

Bearing reso lution

Bearing resolution is the ability of the radar to display the echoes received from two targets, which are at the same range and close together, as separate targets. Bearing resolution is directly proportional to the antenna length, and inversely proportional to the radar's wavelength.

Range resolut ion

Range resolution is the ability to display the echoes received from two targets, which are on the same bearing and close to each other, as separate targets.

Bearing accuracy

One of the most important features of the radar is how accurately the bearing of a target can be measured. The accuracy of bearing measurement basically depends on the narrowness of the radar beam. However, the bearing is usually taken relative to the ship’s heading, and thus, proper adjustment of the heading marker at installation is an important factor in ensuring bearing accuracy. To minimize error when measuring the bearing of a target, select a range which will put the target as far out to the edge of the radar screen as possible.

Range measurement

Measurement of the range to a target is also a very important function of the radar. Generally, there are two means of measuring range: the fixed range rings and the variable range marker (VRM). The fixed range rings appear on the screen with a predetermined interval and provide a rough estimate of the range to a target. The variable range marker’s diameter is increased or decreased so that the marker touches the inner edge of the target, allowing the operator to obtain more accurate range measurements.

2. RADAR OPERATION

2-46

2.26.2 False echoes

Occasionally echo signals appear on the screen at positions where there is no target, or disappear even if there are targets. False target situations may be recognized, however, if you understand why they are displayed. Typical false echoes are shown below.

Multiple echoes

Multiple echoes occur when a transmitted pulse returns from a solid object like a large ship, bridge, or breakwater. A second, a third or more echoes may be observed on the display at double, triple or other multiples of the actual range of the target as shown below. Multiple reflection echoes can be reduced and often removed by decreasing the gain (sensitivity) or properly adjusting the [A/C SEA] control.

Own ship

Target

True echo

Multiple echo

Multiple ec hoes

Sidelobe echoes

Every time the radar pulse is transmitted, some radiation escapes on each side of the beam. This stray RF is called sidelobe. If a target exists where it can be detected by the side lobes as well as the main lobe, the side echoes may be represented on both sides of the true echo at the same range. Sidelobes appear usually only on short ranges and from strong targets. They can be reduced through careful reduction of the gain or proper adjustment of the A/C SEA control.

Target B (True)

Target B (Spurious)

Target A

Sidelobe echoes

2. RADAR OPERATION

2-47

Virtual image

A relatively large target close to your ship may be shown at two positions on the screen. One of them is the true echo directly reflected by the target and the other is a false echo which is caused by the mirror effect of a large object on or close to your ship as shown in the figure below. If your ship comes close to a large metal bridge, for example, such a false echo may temporarily be seen on the screen.

True

echo

False echo

Own ship

Target ship

Mirror image

of target ship

;

Virt ual image

Shadow sectors

Funnels, stacks, masts, or derricks in the path of the antenna block the radar beam. If the angle subtended at the antenna is more than a few degrees, a non-detecting sector or blind spot may be produced. Within this sector, targets can not be detected.

Radar antenna

Radar mast

Shadow sector

Shadow sectors

2. RADAR OPERATION

2-48

2.26.3 SART (Search and Rescue Transponder)

A Search and Rescue Transponder (SART) may be triggered by any X-Band (3 cm) radar within a range of approximately 8 nm. Each radar pulse received causes it to transmit a response which is swept repetitively across the complete

radar frequency band. When interrogated, it first sweeps rapidly (0.4 µs) through the band before beginning a relatively slow sweep (7.5 µs) through the band

back to the starting frequency. This process is repeated for a total of twelve complete cycles. At some point in each sweep, the SART frequency will match that of the interrogating radar and be within the pass band of the radar receiver. If the SART is within range, the frequency match during each of the 12 slow sweeps will produce a response on the radar display, thus a line of 12 dots equally spaced by about 0.64 nautical miles will be shown.

When the range to the SART is reduced to about 1 nm, the radar display may show also the 12 responses generated during the fast sweeps. These additional dot responses, which also are equally spaced by 0.64 nm, will be interspersed with the original line of 12 dots. They will appear slightly weaker and smaller than the original dots.

9500 MHz

9200 MHz

Radar antenna beamwidth

Screen A: When SART is distant

Screen B: When SART is close

Lines of 12 dots are displayed in concentric arcs.

Echo of SART

Position of SART

Own ship's position

SART mark length

Radar receiver bandwidth

Sweep time

7.5 µs 95 µs

Sweep start

High speed sweep signal

Low speed sweep signal

24 NM

1.5 NM

Position of SART

Echo of SART

Appearance of SART s ignal on the radar display

2. RADAR OPERATION

2-49

General procedure for detecting SART response

1. Use the range scale of 6 or 12 nm as the spacing between the SART responses is about 0.6 nm (1125 m) to distinguish the SART.

2. Turn off the automatic clutter suppression (if applicable).

3. Turn off the Interference Rejector.

General remarks on receivi ng SART

SART range errors

When responses from only the 12 low frequency sweeps are visible (when the SART is at a range greater than about 1 nm), the position at which the first dot is displayed may be as much as 0.64 nm beyond the true position of the SART. When the range closes so that the fast sweep responses are seen also, the first of these will be no more than 150 meters beyond the true position.

Radar bandwidth

This is normally matched to the radar pulselength and is usually switched with the range scale and the associated pulselength. Narrow bandwidths of 3-5 MHz are used with long pulses on long range and wide bandwidths of 10-25 MHz with short pulses on short ranges.

Any radar bandwidth of less than 5 MHz will attenuate the SART signal slightly, so it is preferable to use a medium bandwidth to ensure optimum detection of the SART.

Radar side lobes

As the SART is approached, sidelobes from the radar antenna may show the SART responses as a series of arcs or concentric rings. These can be removed by the use of the [A/C SEA] control although it may be operationally useful to observe the sidelobes as they may be easier to detect in clutter conditions and also they will confirm that the SART is near to the ship.

Gain

For maximum range SART detection the normal gain setting for long range detection should be used, that is, with background noise speckle visible.

2. RADAR OPERATION

2-50

A/C SEA control

For optimum range SART detection, this control should be set to the minimum. Care should be exercised as wanted target in sea clutter may be obscured. Note also that in clutter conditions the first few dots of the SART response may not be detectable, irrespective of the setting of the anti-clutter sea control. In this case, the position of the SART may be estimated by measuring 9.5 nm from the furthest dot back towards own ship.

Some sets have automatic/manual anti-clutter sea control facilities in which case the operator should switch to manual.

A/C RAIN control

This should be used normally (to break up areas of rain) when trying to detect a SART response which, being a series of dots, is not affected by the action of the anti-clutter rain circuitry. Note that racon responses, which are often in the form of a long flash, will be affected by the use of this control.

Some sets have automatic/manual anti-clutter rain control facilities in which case the operator should switch to manual.

Note: This SART information is excerpted from IMO SN/Circ 197 Operation of

Marine Radar for SART Detection.

2.26.4 Racon (Radar Beacon)

A racon is a radar transponder which emits a characteristic signal when triggered by a ship’s radar (usually only the 3 centimeter band). The signal may be emitted on the same frequency as that of the triggering radar, in which case it is superimposed on the ship's radar display automatically.

The racon signal appears on the PPI as a radial line originating at a point just beyond the position of the radar beacon or as a Morse code signal (see figure below) displayed radially from just beyond the beacon.

Racon

Appearance of racon signal on the radar dis play

3-1

3. PLOTTER OPERATION

3.1 Plotter Displays

You may show the plotter display over the entire screen, in the overlay screen (MODEL1722C/1723C series), or in a combination screen. Press the [DISP] key to show the screen selection window, and then rotate the [ENTER] knob to select PLOT, NAV or OVRLY (overlay) as appropriate.

3.1.1 Full- scr e en pl otter display

BRIDGE

FISH

002WP

34° 22. 3456'N 359.9° M

TRIP

080° 22. 3456'E

19.9 kt 99.9 nm

MODE

NTH UP

NAV

POS

MARK

ENTRY

D. BOX ON/OFF

16.0nm

Nav data window (Data changes with NAV soft key setting and cursor status. For details see next page.)

Course bar

Functions for soft keys

Own ship track

Own ship marker

Presentation mode

(North-up)

Icon (from left) North Marker Chart Alarm Track Hold Chart Offset Save L/L Offset Battery Simulation (See icon table on page A-14 for details.)

Waypoint name

Waypoint marker

Scale

Trip distance

Full-screen plotter display

Note: The own ship marker blinks when the unit loses the GPS signal. The

message “No GPS fix!” appears approx. 90 seconds after the positioning error and is accompanied by the audio alarm. When the message “NO POSITION DATA” appears, a cable may be loosened.

3. PLOTTER OPERATION

3-2

Nav data window

The data shown in the nav data window depends on the status of the NAV soft key and the cursor.

359. 9° 359. 9 °M 79. 9°F NU

19. 9kt 99. 9nm 345 ft

Bearing to Waypoint

Course, Speed

Range to Waypoint

Water Temp., Depth*

CSE SOG

BRG RNG

TMP DPT

NAV S/C

soft key

Presentation Mode

Own Ship Mark Speed Trip Distance

NAV POS

soft key

34°24. 3456'N 359. 9°M

TRIP

124°24. 3456'W 19. 9kt 99. 9nm

CourseLatitude, Longitude

Presentation Mode

Own ship position

Own ship speed and course

NAV OFF

soft key

Turns off nav data window

* Requires appropriate sensor.

34°24. 3456'N 359. 9°M

TRIP

124°24. 3456'W 59.9nm 99. 9nm

Bearing to Cursor

Latitude, Longitude

Trip Distance

Presentation Mode

Cursor Mark

Latitude and longitude of cursor intersection

Range to Cursor

359. 9°M TTG4D02H23M NU

19. 9nm

ETA1st 13:45

Bearing to WaypointWaypoint Name

Estimated Time of Arrival

Range to Waypoint

Waypoint Mark

001WPT

Presentation Mode

NAV WPT

soft key

Destination waypoint data

Time-to-Go to Destination

359. 9°M359. 9°M

TRIP

19. 9nm 19. 9kt 99. 9nm

CourseBearing to WaypointWaypoint Name

001WPT

Waypoint data (waypoint selected with cursor)

Presentation Mode

SpeedRange to WaypointWaypoint Mark Trip Distance

Content s of nav data window

3. PLOTTER OPERATION

3-3

3.1.2 Compass display

The compass display, displayed at the bottom half of the screen in the combination display, provides steering information. The compass rose shows two triangles: the black triangle (hollow on monochrome model) shows the bearing to destination waypoint and the red (solid on monochrome) triangle, which moves with ship’s course, shows own ship’s course.

The water temperature and depth graphs, which require appropriate sensors, show the latest 10 minutes of temperature and depth data. The range of the depth graph is 50 feet and it is automatically adjusted with depth.

Bearing scale

XTE monitor (See next page for description.)

Depth graph*

Water temperature graph*

Time-to-go to destination

Estimated time of arrival at destination

Ship's course (red and filled

on color model, filled on monochrome model

)

Destination waypoint

Range to destination waypoint

Speed over ground

* = Requires appropriate sensor.

Destination waypoint bearing (black and filled

on color model,

hollow on monochrome model)

BRG

DPT

TMP

359.9°M

45.2ft

16.2°F

359.9°M

003WPT

0D 9H 59MTTG 23th23:59

ETA

SOG

10.0

STW

RNG

99.9nm

Speed through water

CSE

Direction to steer (green on color model)

Shown (in red on color model) when direction to steer is "left."

Own ship marker (For color model, black when within XTE range, yellow when over; flashes when over XTE range on monochrome model)

Compass display

3. PLOTTER OPERATION

3-4

Reading the XTE (cross-track error) monitor

The XTE monitor, located below the compass rose, shows the amount you are off course and the direction to steer to return to course. The own ship marker shows the direction and amount your ship is off course. It is shown in black when the amount of cross-track error is within the XTE monitor range and yellow when it is over. An arrow appears at the right or left side of the XTE monitor and it shows the direction to steer to return to intended course. (For the color model the arrow is shown in red when you should steer left, and green when you should steer right.) In the example on the previous page you would steer right to return to course. To maintain course, steer the vessel so the own ship marker stays at the center of the XTE monitor.

Soft keys EDIT XT-L MT: Sets the range for XTE monitor scale. See the procedure below

for how to set.

Setting the range for the XTE monitor

1. With the compass (or highway) display shown, press the EDIT XT-LMT soft key to display the following window.

XTE LIMIT

0 .1nm

XTE range sett ing window

2. Use the cursor pad to select digit to change. Note that all digits may be cleared by pressing the [CLEAR] key.

3. Use the [ENTER] knob to set value, or press the CANCEL soft key to cancel.

RESET XTE: Displayed when destination is set, and enables you to restart

navigation. When this soft key is pressed, the following window is displayed.

RESTART NAVGATION TO CURRENT WPT. ARE YOU SURE? YES ... PUSH ENTER KNOB NO ... PUSH CLEAR KEY

3. PLOTTER OPERATION

3-5

3.1.3 Highway display

The highway display, displayed at the lower half of the screen in the combination display, provides a graphic presentation of ship’s track along intended course. It is useful for monitoring ship’s progress toward a waypoint. The own ship marker shows relation between ship and intended course. The XTE monitor shows the direction and amount your vessel is off course – the arrow shows the direction to steer to return to your course and the numeric the distance you are off course. Using the figure below as an example, you would steer right 0.009 nm to return to course. To maintain course, steer the vessel so the own ship marker stays aligned with the intended course line.

Time-to-go to destination

Range to destination waypoint

Estimated time of arrival at destination

0.9 nm

WPT001

003WPT

0D 9H 59MTTG 23th23:59

ETA

SOG

10.0

STW

RNG

99.9 nm

Destination waypoint

Own ship marker

Speed over ground, speed through water

XTE monitor

0.009nm

0.9 nm

XTE range

Intended course

Destination waypoint

Direction to steer (green on color model)

Shown (in red on color model) when direction to steer is "left."

Highway di s play

Soft keys EDIT XT-L MT: Sets the range for the XTE monitor scale. See the procedure on

the previous page for how to set.

RESET XTE: Displayed when destination is set, and enables you to restart

navigation. See the description on the previous page.

3. PLOTTER OPERATION

3-6

3.1.4 Nav data display

The nav data display provides comprehensive navigation data. The user may select what data to display and where to display it, on the NAV DATA DISPLAY SETUP menu. For details see paragraph “5.8 Nav Data Display Setup.”

Appropriate sensors are required. Bars ( - -) appear when corresponding sensor is not connected.

ET A

TTGTRIP LOG

103

TIMEDATE

FEB 1

0D 2H 30

1st 1:25

01:27:05

2001

POSITION

34° 34. 5678' N

120° 34. 5678'

SOGWPT POSITION

COURSESTW

10.0

RANGEBEARING

9.2°

TEMPDEPTH

Speed over ground

Position

Water temperature

Range to waypoint

Course

Bearing to waypoint

Speed through water

Waypoint Position

Depth

Half-screen display

Full-screen display

34° 14. 5678' N

120° 14. 5678'

10.0

101.6°

0.18

1324.1

18.2 °

Nav data dis plays

3. PLOTTER OPERATION

3-7

3.2 Presentation Mode

Three types of presentation modes are provided for the plotter display: north-up, course-up and auto course-up. To change the presentation mode, first press the [HIDE/SHOW] key if the plotter soft keys are not displayed. Press the MODE soft key to select desired mode. Each press of the key changes the presentation mode and presentation mode indication (top right-hand corner of the screen) cyclically in the sequence of North-up, Course-up and Auto course-up.

3.2.1 North-up

North is at the top of the display and own ship, shown by a filled circle. This mode is useful for long-range navigation.

BRIDGE

FISH

WP-002

34° 22. 3456'N 359.9°

TRIP

080° 22. 3456'E

19.9 kt 99.9 nm

MODE

NTH UP

NAV

POS

MARK

ENTRY

16.0nm

D.BOX ON/ OFF

Plotter dis play, north-up mode

3. PLOTTER OPERATION

3-8

3.2.2 Course-up

The destination is at the top of the screen when a destination is set. When no destination is set, the course or heading is at the top of the screen at the moment the course-up mode is selected. A filled triangle marks own ship’s position.

Note: The data sentences GGA and VTG must be output from the NavNet

display unit connected to the GPS navigator in order to correctly orient the own ship marker in the course-up mode on other NavNet display units.

34° 22. 3456'N 359.9° M

TRIP

080° 22. 3456'E

19.9 kt 99.9 nm

GO TO CURSOR

MODE

CSE UP

CENTER

MARK

ENTRY

WPT 001

16.0nm

D. BOX ON/ OFF

Plotter dis play, course-up mode, destination set

3.2.3 Auto course-up

The course is at the top of screen at the moment the auto course-up mode is selected. In this mode, the current course is kept at the top of the screen when the change is within 22.5 degrees. For example, if your vessel turns larger than

22.5 degrees to port or starboard, the chart display will rotate so that your course

is pointing towards the top of the screen again. A filled triangle marks own ship’s position.

34° 22. 3456'N 359.9° M

TRIP

080° 22. 3456'E

19.9 kt 99.9 nm

GOTO CURSOR

MODE

AT CU

CENTER

MARK

ENTRY

16.0 nm

D. BOX ON/OFF

Plotter dis play , auto course-up mode

3. PLOTTER OPERATION

3-9

3.3 Shifting the Display

The plotter display can be shifted on the plotter display as below.

1. Press the cursor pad to display the cursor.

2. Locate the cursor at a screen edge and press and hold down the cursor pad. The screen shifts in the direction opposite of cursor location.

3. To return the cursor to the screen center, press the CENTER soft key. This also returns own ship marker to the screen center.

3.4 Chart Scale

Chart scale (range) may be selected with the [RANGE -] or [RANGE +] key. The [-] key expands the chart range; the [+] key shrinks it.

Charts scales

nm 0.125 0.25 0.5 1 2 4 8 16 32 64 128 256 512 1024 2048

km 0.23 0.46 0.93 1.85 3.70 7.41 14.8 29.6 59.3 119 237 474 948 1896 3792 sm 0.144 0.29 0.58 1.15 2.30 4.60 9.21 18.4 36.8 73.7 147 295 589 1178 2356

Note: When the display is expanded or shrunk beyond the range of the chart

card in use the message “NO CHART” appears, along with the appropriate chart icon. See the illustration on the next page for details.

3. PLOTTER OPERATION

3-10

3.5 Chart Cards

3.5.1 Chart card o ver vie w

Your system reads FURUNO and NavCharts™ (NAVIONICS) charts, or C-MAP charts, depending on its specification.

When you insert a suitable chart card in the slot and your boat is near any chart graphic data, a chart appears. If a wrong card is inserted or a wrong chart scale is selected, land masses will appear hollow. Insert the proper card and select a suitable chart scale. Chart icons appear at the top of the display to help you select a suitable chart scale. The table below shows the chart icons and their meanings.

Chart icons and their m eanings

Icon Meaning

Proper card is not inserted or chart scale is too small. Operate the RANGE key to adjust chart scale.

Chart scale is too large. Operate the RANGE key to adjust chart scale.

Suitable chart scale is selected.

3. PLOTTER OPERATION

3-1 1

3.5.2 Indices an d ch art enlargemen t

When the [RANGE] key is operated, 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 zoomed in on.

Sample chart ( J apan) showing indices

When a chart cannot be displayed

A chart will not be displayed in the following conditions:

• When the chart scale is too large or too small.

• When scrolling the chart outside the indices.

When this happens, select proper chart scale.

Note: Indices can be turned on or off with “Chart border line.” See page 5-13 for

FURUNO and NAVIONICS charts and 5-16 for C-MAP charts.

3. PLOTTER OPERATION

3-12

3.5.3 FURUNO and NavCharts

™

Chart symbo ls

The table below shows FURUNO and NavCharts

™ mini chart symbols and their

meanings.

Chart symbols

Symbol Description

Summit

Wreck

Lighthouse

Lighted Buoy

Buoy

Radio Station

Symbol Description

Position of Sounding

Obstruction

Fishing Reef

Platform

Anchorage

Data for aids to navigation

Selected FURUNO and NavCharts

™ charts can show buoy and lighthouse data.

Simply place the cursor on the lighthouse or buoy mark.

Place the cursor on a lighthouse or buoy mark.

Lighthouse mark

NAVAID: /FL 6S 12M FROM OS 52.38nm 48.0°

Period (ex.: 6 seconds)

Visibility in nautical mile (ex.: 12 miles)

FL : Flashing F : Fixed light F FL : Fixed and Flashing light MO : Morse code light Oc : Occulting light

Example of data displayed

Range and bearing from own ship

Example of buoy, lighthouse data

3. PLOTTER OPERATION

3-13

Port service icons (NavCh arts™ only)

NavCharts

™ show services available at ports, with icons. Use the cursor pad to

place the cursor on the sailboat icon (denotes a port or harbor), and then push the [ENTER] knob. The services available appear at the top of the display.

Emergency medical service

Water supply station

Customer service station

Information center

Fueling station

Traveler's service station

Marine equipment service

Port

Sailboat icon (Port)

Detailed information of service selected

List of services at the port selected

34° 22. 3456'N 359.9°M TRIP NU 080° 22. 3456'E

19.9 kt 99.9 nm

CANCEL

FIRST AID

16.0nm

Plotter dis play , showing port s er v ice display

Current (or tide) data

Some NavCharts provide for calculation of the current (or tide) data for any date. Additionally it displays the time of sunrise and sunset, moon shape (on current data.)

1. Use the trackball to place the cursor on a

current icon (

2. Press the [ENTER] knob to show the

current window.

3. Press the DATE soft key, and then enter

the date desired.

4. Press the ENTER soft key.

34 24. 3456 N 359.9 NU 124 24. 3456 W 59.9kt 024nm

Time: 04:35 Speed (KT): 0.45ft Angle ( ): 142 21/08/02 +00

Moonphase: FULLY IN 1 DAY Moonrise: 14:06 Moonset: 02:15 Sunrise: 05:03 Sunset: 19:10

0.86

0.74

0.61

0.48

0.35 0481216 20 24

RETURN

DATE

Current

Max. Time Speed Aug. Slack

KT AT Flood 4:58 1.2 323 7:58 Ebb 23:15 1.2 323 20:15 Flood 17:15 1.1 145 15:15 Ebb 23:15 1.2 323 20:15

3. PLOTTER OPERATION

3-14

3.5.4 C-MAP cards

Cursor and data display

Besides its fundamental functions of providing position data, the cursor can also show caution area, depth area, source of data, etc. on C-map charts. In addition, you can display information about an icon by placing the cursor on it.

1. Press the cursor pad to turn the cursor on.

2. Use the cursor pad to place the cursor on the position desired.

3. Push the [ENTER] knob to open the Objects window.

Objects Spot Sounding

Depth area Exclusive economic zone Military practice area Restricted area Source of data

Objects window

4. Use the cursor pad to select the item desired.

5. Push the [ENTER] knob to display details for object selected.

Depth area

Depth range value1

0.00 Meters

Depth range value2

1829.00 Meters

Example of caution area w indow

6. Press the RETURN soft key to close the window.

7. Repeat step 4 to 6 to select other item.

8. Press the [MENU] key to close the menu.

3. PLOTTER OPERATION

3-15

Icon data

You may place the cursor on any icon to find information about the selected icon.

1. For example, place the cursor on a lighthouse icon.

Place the cursor on a lighthouse icon.

34° 22. 3456'N 359.9°M

TRIP

080° 22. 3456'E

19.9 kt 99.9 nm

GO TO CURSOR

CENTER

MARK

ENTRY

16.0nm

D. BOX ON /OFF

MODE

NTH UP

Lighthouse icon

2. Push the [ENTER] knob to show data. For example, the following window appears for a lighthouse.

Objects Lighthouse

Tower

Light Underwater Rock Depth contour Depth contour Depth area Source of data

Object windows

3. Use the cursor pad to select the item desired.

4. Push the [ENTER] knob to display detailed information.

3. PLOTTER OPERATION

3-16

Color white Height

7. 00 Meters Light characteristic occulting XXXXXXXX XXXXXXXX

Navigation mark, fixed Light.

Sample light house data

5. Press the RETURN soft key twice to close the Objects window.

Tide information

The C-MAP chart card provides for calculation of the tide heights for any date. Additionally it displays the times of sunrise and sunset.

1. Press the cursor pad to place the cursor on a Tide icon (

2. Push the [ENTER] knob to open the Objects window.

34 24. 3456 N 359.9 NU 124 24. 3456 W 59.9kt 024nm

OBJECTS

Tide height

Cartographic area Source of data

RETURN

Objects window

3. Use the cursor pad to select “Tide height.”

4. Push the [ENTER] knob to open the TIDE window.

Furuno NAVnet 1753C, NAVnet 1733C, NAVnet 1723C, NAVnet 1763C, NAVnet 1722C Operator's Manual

Specifications and Main Features

Frequently Asked Questions

User Manual