Koden MDC-2900 Series Operation Manual

Declaration of Conformity

(As required by Article 6.3 of Directive 1999/5/EC-RTTE Directive)

Declares under his sole responsibility that the produced Marine Radar System manufactured
by

Koden Electronics Co., Ltd.

5278 Uenohara

Uenohara-Shi,

Yamanashi-Ken

409-0112

Japan

Telephone [phone] Telefax [phone]

Intended for Worldwide use as a Marine Radar for use aboard non-SOLAS vessels and
identified by the type number MDC-2960 / MDC-2910 / MDC-2920 to which this

declaration refers has been tested to the essential radio test suites required by the notified
body and is in conformity with the standards

EN 60945 : 2002 ( Clauses 9,10 & 12 )
EN 62252 : 2004 ( Clauses 4.8, 4.33, 5.8, 5.33 and Annex D )
ITU-R Recommendation RM.1177

and complies with the essential requirements of Directive 1999/5/EC

Conformity procedure under Annex IV of 1999/5/EC (Technical Construction file) has been
undertaken by
QinetiQ Ltd. Cody Technology Park Ively Road, Farnborough GU14 0LX. United Kingdom

The Technical Construction File is held by Mr Heinz Hoghoff at

Koden Elektronik GmbH,

Am Gewerbepark 15,

D-64823 Gross-Umstadt / Hessen

Germany

Telephone [phone] Telefax [phone]

Kenichi Chiwaki, QA Manager.
Koden Electronics Co., Ltd.
02 Feb. 2009

Declaration of Conformity

(As required by Article 6.3 of Directive 1999/5/EC-RTTE Directive)

Declares under his sole responsibility that the produced Marine Radar System manufactured
by

Koden Electronics Co., Ltd.

5278 Uenohara

Uenohara-Shi,

Yamanashi-Ken

409-0112

Japan

Telephone [phone] Telefax [phone]

Intended for Worldwide use as a Marine Radar for use aboard non-SOLAS vessels and
identified by the type number MDC-2960BB / MDC-2910BB / MDC-2920BB to which

this declaration refers has been tested to the essential radio test suites required by the notified
body and is in conformity with the standards

EN 60945 : 2002 ( Clauses 9,10 & 12 )
EN 62252 : 2004 ( Clauses 4.8, 4.33, 5.8, 5.33 and Annex D )
ITU-R Recommendation RM.1177

and complies with the essential requirements of Directive 1999/5/EC

Conformity procedure under Annex IV of 1999/5/EC (Technical Construction file) has been
undertaken by
QinetiQ Ltd. Cody Technology Park Ively Road, Farnborough GU14 0LX. United Kingdom

The Technical Construction File is held by Mr Heinz Hoghoff at

Koden Elektronik GmbH,

Am Gewerbepark 15,

D-64823 Gross-Umstadt / Hessen

Germany

Telephone [phone] Telefax [phone]

Kenichi Chiwaki, QA Manager.
Koden Electronics Co., Ltd.
02 Feb. 2009

MDC-2900 Series Revision History

MDC-2900 Series Operation Manual

Doc No: 0093129012

Document Revision History

No. Doc. No.- Rev. No. Revised Date

(Y/M/D)

0 0093129012-00 2009/04/28 First edition

1 0093129012-01 2009/06/05 Full revision

2 0093129012-02 2009/07/24 Full revision

3 0093129012-03 2009/09/25 Chapter 7

4 0093129012-04 2010/01/26 Contents, Chapter 1, Chapter 2, Chapter 4, Chapter 8

5 0093129012-05 2010/04/15 Chapter 1, Chapter 4

6 0093129012-06 2011/11/15

7

Important Notice, Chapter 2, Chapter 3, Chapter4
TT(ATA)→TT(ARPA)

Revised Content

8

9

10

Document No. Revised Version Norm

When part of the document needs to be revised, the document has advanced revision number.

The document No. is indicated at the lower right side on the cover and at the left or right side of the

footer region of each page.

© 2009-2011 Koden Electronics Co., Ltd. All rights reserved.

No part of this publication may be reproduced, transmitted, translated in any from by any means without

the written permission of Koden Electronics Co., Ltd. The technical descriptions contained in this

publication are subject to change without notice. Koden assumes no responsibility for any errors,

incidentals or consequential damages caused by misinterpretation of the descriptions contained in this

publication.

0093129012-06 i

Important Notice MDC-2900 Series

Important Notice

 For copy and transcription of this Operation Manual (hereinafter referred to as this manual),

permission from Koden is needed. Koden prohibits the un-authorized copy and transcription of this

manual.

 If this manual is lost or damaged, consult a dealer of Koden or Koden.

 The specification of the products and the contents in this manual are subject to change without

notice.

 The contents displayed on the menu of product may be different from the expression of this

manual. The fonts and shapes of the keys and menus in the illustration may differ from the actual

ones, and some parts may be omitted.

 Koden is not liable for damages and troubles arisen from misunderstanding of the contents in this

manual.

 Koden is not liable for any damages caused by earthquake, lightning, wind and flood damage and

fire for which Koden is not responsible, and actions by third parties, other accidents, customer’s

unintended error/abuse and the use under other abnormal conditions.

 Koden is not liable for damages of accompaniment (change/loss of memorized content, loss of

business profit, stop of business) arisen from use or failure of our products.

 If the stored data are changed or lost, irrespective of causes of troubles and damages, Koden is

not liable for them.

 Koden is not liable for any damages arisen from malfunction caused by combination of software

and connected equipment in which Koden is not engaged.

ii 0093129012-06

MDC-2900 Series For Your Safe Operation

For Your Safe Operation

Symbol used in this Operation Manual

This manual uses the following symbols. Understand the meaning of each symbol and implement the

maintenance and inspection.

Symbol Meaning

Mark for warning

This symbol denotes that there is a risk of death or serious injury when not

dealing with it correctly.

Mark for danger high voltage

This symbol denotes that there is a risk of death or serious injury caused by

IMPORTANT

electric shock when not dealing with it correctly.

Mark for caution

This symbol denotes that there is a risk of slight injury or damage of device

when not dealing with it correctly.

Mark for prohibition

This symbol denotes prohibition of the specified conduct. Description of the

prohibition is displayed near the mark.

Mark for important matters

This mark denotes that there is a possibility that data loss may interfere the

operation or that the expected result may not be obtained when the radar is

not dealt correctly.

Mark for reference

This mark shows the part to be referred to concerning this description.

0093129012-06 iii

For Your Safe Operation MDC-2900 Series

Caution Item on Equipment

Caution on a high voltage inside.

A high voltage, which may risk your life, is used. This high voltage

remains in the circuit after you have powered off switch. To prevent

touching the high voltage circuit inadvertently, the protective cover is

provided to the high voltage circuit and the high voltage caution label is

affixed. Ensure to power off switch for your safety and discharge the

electricity remaining in the capacitor before starting to check. An

engineer authorized by our company should inspect and maintain the

circuit.

Be sure to switch off the power in the boat.

If the power switch is inadvertently powered on during work, you will be

electrified. To prevent such accident from occurring, ensure to switch off

the power in the boat and the power of equipment. Furthermore, it is

safer to hang the caution tag with description of [Under Work] near the

power switch of equipment.

Caution on dust

Inhaling dust may cause A respiratory disease. When cleaning the inside

of equipment, be careful not to inhale dust. Wearing a safety mask is

recommended.

Caution on location of equipment

Do not install the equipment where it is excessively damp and suffers

from excessive water drops.

Caution on static electricity

The static electricity may be generated from the carpet on the floor in the

cabin or clothes made of synthetic fiber. The static electricity may

destroy the electronic parts on the circuit board. Handle the circuit board,

taking the suitable anti-static measures.

iv 0093129012-06

MDC-2900 Series For Your Safe Operation

Caution Item on Handling

Caution on the rotating aerial

The radar antenna may start to rotate without notice. Please

Caution

stand clear from the antenna for your safety.

Caution on electromagnetic disturbance

The operating antenna & scanner unit radiates high-energy electromagnetic

wave. It may cause harmful effect for human body due to its continuous

irradiation. As International regulation says, electromagnetic waves less than

2

100 watt/m

medical devices such as heart pacemakers are sensitive even under the low

energy electromagnetic wave. Any personnel with such a device should keep

away from the electromagnetic wave generating position at all times.

Specified power density and distance from the radar (in accordance with the

provision as specified in IEC 60945)

Model name Xmit power/

MDC-2960

MDC-2960BB

does not have a harmful effect on human bodies, but some kind of

2

100W/m

Antenna length

6kW / 4 feet Antenna 1.09m 1.55m 3.46m

6kW / 6 feet Antenna 1.30m 1.84m 4.11m

6kW / 9 feet Antenna 1.55m 2.19m 4.89m

50W/m2 10W/m

2

MDC-2910

MDC-2910BB

MDC-2920

MDC-2920BB

12kW / 4 feet Antenna

12kW / 6 feet Antenna

12kW / 9 feet Antenna

25kW / 4 feet Antenna

25kW / 6 feet Antenna

25kW / 9 feet Antenna

1.55m 2.19m 4.89m

1.84m 2.60m 5.81m

2.19m 3.09m 6.90m

2.37m 3.36m 7.50m

2.82m 3.99m 8.91m

3.35m 4.74m 10.60m

0093129012-06 v

For Your Safe Operation MDC-2900 Series

Do not disassemble or modify. It may lead to trouble, fire, smoking or

electric shock. In case of trouble, contact our dealer or our company.

In case of smoke or fire, switch off the power in the boat and the power of

equipment. It may cause fire, electric shock or damage.

Caution on the remaining high voltage.

A high voltage may remain in the capacitor for several minutes after you

have powered off. Before inspecting inside, wait at least 5 minutes after

powering off or discharging the remaining electricity in an appropriate

manner. Then, start the work.

The information displayed in this unit is not provided directly for your

navigation. For your navigation, be sure to see the specified material.

Use the specified fuse. If un-specified fuse is used, it may cause a fire,

smoke or damage.

vi 0093129012-06

MDC-2900 Series Disposal of used cell and this radar

Disposal of used cell and this radar

A high-energy density lithium ion cell is built in this radar.

Improper disposal of a lithium ion cell is discouraged as the cell has a

possibility of short-circuiting. If it gets wet, the generation of heat,

explosion or ignition may occur resulting in an injury or a fire.

Treatment of the used lithium ion cell

To dispose of built-in lithium ion cell (CR-2032) in this radar, insulate each terminal with scotch tape, etc.

and wrap in plastic bag, etc.

The disposal and collection rules may be different depending on each municipal district. Obey the

directions of each district.

Disposal of this radar

This radar shall be disposed according to the municipal regulations or rules.

0093129012-06 vii

Contents MDC-2900 Series

Contents

Document Revision History........................................................................................................i

Important Notice........................................................................................................................ii

For Your Safe Operation ..........................................................................................................iii

Disposal of used cell and this radar ........................................................................................ vii

Contents ................................................................................................................................ viii

Introduction.............................................................................................................................xvi

Configuration items ............................................................................................................... xvii

System configuration................................................................................................ xvii

Option ...................................................................................................................... xviii

Chapter 1 Adjustment in installation................................................................... 1-1

1.1 Menu usage.............................................................................................................. 1-1

1.2 Tuning method......................................................................................................... 1-1

Auto tuning ...............................................................................................................1-1

Manual tuning ........................................................................................................... 1-1

1.3 Picture bearing adjustment (HL OFFSET)............................................................ 1-2

1.4 Adjustment of transmitting delay time (TX DELAY)............................................. 1-3

1.5 Setup antenna height.............................................................................................. 1-4

1.6 Setup antenna cable length ................................................................................... 1-4

1.7 Setup of MBS (Main Bang Suppression) value.................................................... 1-4

1.8 Setup own ship profile (Cannot use on transmitting)......................................... 1-5

1.9 Inside save of setup data at the time of setting up (Can not use while

transmitting) ............................................................................................................ 1-6

1.10 External save of setup (Cannot use on transmitting)........................................ 1-10

Chapter 2 Basic operation [for operating unit (panel)] ...................................... 2-1

2.1 Illustration of operating unit (panel)...................................................................... 2-1

2.2 Name of radar display............................................................................................. 2-2

2.3 Power On/Off ........................................................................................................... 2-4

Power On.................................................................................................................. 2-4

Power Off.................................................................................................................. 2-4

2.4 Change brilliance of display unit........................................................................... 2-5

Change display brilliance .........................................................................................2-5

Change lighting of operating panel illumination .......................................................2-5

2.5 Transmission........................................................................................................... 2-5

Start transmission..................................................................................................... 2-5

Stop transmission..................................................................................................... 2-5

2.6 Change range (indicated distance)....................................................................... 2-6

viii 0093129012-06

MDC-2900 Series Contents

*About bearing scale ................................................................................................ 2-6

2.7 Adjust receiver gain (GAIN)................................................................................... 2-7

2.8 Reject sea clutter (anti-SEA).................................................................................. 2-8

Selection of MAN SEA and AUTO SEA ................................................................... 2-8

AUTO adjustment of the SEA .................................................................................. 2-9

Manual adjustment of the SEA................................................................................. 2-9

2.9 Reject rain/snow clutter (anti-RAIN) ................................................................... 2-10

Changing method of CFAR and DIFF .................................................................... 2-10

CFAR (Constant False Alarm Rate) adjustment .................................................... 2-11

RAIN DIFF (Differentiation) adjustment ................................................................. 2-12

2.10 Change transmission pulse length (SP/LP)....................................................... 2-13

2.11 Measure distance and bearing of a target.......................................................... 2-14

Measure distance (VRM: Variable Range Maker).................................................. 2-14

Measure bearing (EBL: Electronic Bearing Line)................................................... 2-15

Using the EBL based on a position other than reference point (EBL OFFSET) .... 2-16

Measure distance/bearing (PI: Parallel index line)................................................. 2-17

Measure distance/bearing (ERBL: Electronic range and bearing line).................. 2-20

2.12 Change display color (Day/Night) ....................................................................... 2-21

2.13 Remove the heading line...................................................................................... 2-21

2.14 Relocate antenna position (Off-centering)......................................................... 2-22

2.15 Select screen display (Display mode) ................................................................ 2-23

For H UP (Head up mode) ..................................................................................... 2-23

For C UP (Course up mode) .................................................................................. 2-24

For N UP (North up mode)..................................................................................... 2-24

For relative motion (RM) and true motion (TM)...................................................... 2-25

Reset true motion................................................................................................... 2-26

2.16 F (Function key) usage......................................................................................... 2-27

Chapter 3 Primary operations (For menu)...........................................................3-1

3.1 Menu usage ............................................................................................................. 3-1

Display and remove menu ....................................................................................... 3-1

Select menu item ..................................................................................................... 3-1

3.2 STAB MODE............................................................................................................. 3-2

SEA (Sea stabilization)............................................................................................. 3-2

GND (Ground stabilization) ...................................................................................... 3-3

3.3 Radar signal correlation (PROCESS).................................................................... 3-4

3.4 Enhance target (ENH)............................................................................................. 3-6

3.5 Interference rejection (IR) ...................................................................................... 3-7

3.6 Video mode (VIDEO)............................................................................................... 3-8

0093129012-06 ix

Contents MDC-2900 Series

Display ship’s trail................................................................................................... 3-9

3.7

Relative display (R) ................................................................................................3-10

True display (T) ......................................................................................................3-10

3.8 Display range rings (RR) ...................................................................................... 3-11

3.9 Bearing mode set up............................................................................................. 3-12

3.10 Echo alarm............................................................................................................. 3-13

3.11 T arget tracking TT (ARPA) / AIS common items................................................ 3-15

VECTOR................................................................................................................. 3-15

CPA/TCPA.............................................................................................................. 3-16

TGT ID.................................................................................................................... 3-16

PAST POSN: Past position..................................................................................... 3-17

ASSOCIATION .......................................................................................................3-18

Setup area .............................................................................................................. 3-19

INPUT RNG: Input range........................................................................................3-21

AUTO ACQ AREA: Automatic acquisition area ......................................................3-22

GUARD ZONE........................................................................................................ 3-23

3.12 Target tracking TT (ARPA).................................................................................... 3-24

Enable TT (ARPA) function ....................................................................................3-24

Manual acquisition.................................................................................................. 3-24

Delete target........................................................................................................... 3-25

Delete all targets.....................................................................................................3-25

Reference target acquisition................................................................................... 3-26

Types of tracked target symbol ..............................................................................3-27

TEST TGT .............................................................................................................. 3-28

3.13 AIS .......................................................................................................................... 3-38

Enable AIS function ................................................................................................ 3-38

Setup operation area.............................................................................................. 3-38

ACTIVE / SLEEP .................................................................................................... 3-39

FILTER [Sleep targets only].................................................................................... 3-39

AIS AUTO ACQ ......................................................................................................3-39

Types of AIS target symbol.....................................................................................3-40

3.14 Trial manoeuv re..................................................................................................... 3-41

Chapter 4 General operation (Menu).................................................................... 4-1

4.1 RADAR ..................................................................................................................... 4-1

TUNE MAN ADJ....................................................................................................... 4-1

TRAIL TRUE / REL................................................................................................... 4-1

TRAIL TIME.............................................................................................................. 4-1

TRAIL SHAPE ..........................................................................................................4-1

x 0093129012-06

MDC-2900 Series Contents

TRAIL DETECT LEVEL............................................................................................ 4-1

TRAIL RESET .......................................................................................................... 4-1

OFF CENT POINT ................................................................................................... 4-1

AUTO OFF CENT .................................................................................................... 4-1

TM RESET ............................................................................................................... 4-2

C UP RESET............................................................................................................ 4-2

DETAIL ..................................................................................................................... 4-2

4.2 ALARM..................................................................................................................... 4-6

ECHO ALARM.......................................................................................................... 4-6

ECHO ALARM MODE .............................................................................................. 4-6

ECHO ALARM DETECT LEVEL .............................................................................. 4-6

MAP AREA............................................................................................................... 4-6

MAP AREA DETECT LEVEL ................................................................................... 4-6

CPA / TCPA .............................................................................................................. 4-6

AUTO ACQ............................................................................................................... 4-6

GZ ............................................................................................................................ 4-6

AIS SLEEPING LOST .............................................................................................. 4-6

AIS NO HDG / COG................................................................................................. 4-7

NAVLINE CROSS .................................................................................................... 4-7

PRIORITY ................................................................................................................ 4-7

LIST.......................................................................................................................... 4-8

HISTORY LIST......................................................................................................... 4-8

DETAIL ..................................................................................................................... 4-9

4.3 OS / TGT................................................................................................................. 4-10

VECT TRUE/REL................................................................................................... 4-10

VECT TIME ............................................................................................................ 4-10

VECT TIME INCREMENT...................................................................................... 4-10

TGT ID DISP .......................................................................................................... 4-10

ID DISP SIZE ......................................................................................................... 4-10

INTPUT RNG ......................................................................................................... 4-10

ASSOCIATION ....................................................................................................... 4-10

CHANGE SELECTED TGT.................................................................................... 4-10

SETTING................................................................................................................ 4-10

AUTO ACQ AREA .................................................................................................. 4-10

STAB INDICATOR.................................................................................................. 4-11

ANT POSN............................................................................................................. 4-11

PAST TRK TIME..................................................................................................... 4-12

PAST TRK TIME INCREMENT .............................................................................. 4-13

PAST TRK RESET ................................................................................................. 4-13

0093129012-06 xi

Contents MDC-2900 Series

STERN LINE ..........................................................................................................4-13

SHIP OUTLINE....................................................................................................... 4-14

AIS.......................................................................................................................... 4-14

SELECT ID ............................................................................................................. 4-14

ACTIVE / SLEEP .................................................................................................... 4-14

LABEL ....................................................................................................................4-14

SHIP OUTLINE....................................................................................................... 4-14

HDG LINE............................................................................................................... 4-14

TURN INDICATOR .................................................................................................4-14

CLASS B ................................................................................................................4-15

ATON ...................................................................................................................... 4-15

SAR (Search and rescue aircraft) ..........................................................................4-15

BASE ......................................................................................................................4-15

OS DISP ................................................................................................................. 4-15

MESSAGE DISP ....................................................................................................4-15

TT ...........................................................................................................................4-16

SELECT ID ............................................................................................................. 4-16

ACQ........................................................................................................................ 4-16

DELETE.................................................................................................................. 4-16

ALL DELETE ..........................................................................................................4-16

REF ACQ................................................................................................................4-16

EDIT NAME ............................................................................................................ 4-16

TEST TGT .............................................................................................................. 4-16

TRIAL MANOEUVRE .............................................................................................4-17

DETAIL ...................................................................................................................4-17

4.4 TOOL....................................................................................................................... 4-20

RR ..........................................................................................................................4-20

BRG TRUE/REL ..................................................................................................... 4-20

CURSOR SHAPE................................................................................................... 4-20

PI LINE ................................................................................................................... 4-20

PI LINE DISP..........................................................................................................4-20

PI LINE START RNG.............................................................................................. 4-20

PI LINE END RNG..................................................................................................4-20

PI DISP SIDE .........................................................................................................4-20

EBL1 OFFSET........................................................................................................ 4-21

EBL2 OFFSET........................................................................................................ 4-21

DETAIL ...................................................................................................................4-22

4.5 MAP ........................................................................................................................ 4-25

DISP ....................................................................................................................... 4-25

xii 0093129012-06

MDC-2900 Series Contents

DISP GROUP......................................................................................................... 4-25

DISP GROUP COAST LINE .................................................................................. 4-25

DISP GROUP NAV LINE........................................................................................ 4-26

DISP GROUP ROUTE (Alternate planned route).................................................. 4-26

DISP GROUP EVENT MARK ................................................................................ 4-26

DISP GROUP AREA .............................................................................................. 4-27

EDIT COAST LINE................................................................................................. 4-27

EDIT NAV LINE ...................................................................................................... 4-27

EDIT ROUTE (Alternate planned route) ................................................................ 4-28

EDIT EVENT MARK............................................................................................... 4-28

EDIT AREA............................................................................................................. 4-28

MONITORED ROUTE............................................................................................ 4-28

WPT ID DISP ......................................................................................................... 4-29

DATUM................................................................................................................... 4-29

EDIT USER DATUM............................................................................................... 4-29

POSITION OFFSET............................................................................................... 4-29

MAN OFFSET ........................................................................................................ 4-29

DETAIL ................................................................................................................... 4-29

4.6 BRILL...................................................................................................................... 4-33

COLOR................................................................................................................... 4-33

COLOR ECHO ....................................................................................................... 4-33

COLOR TRAIL ....................................................................................................... 4-33

COLOR BKGND PPI.............................................................................................. 4-33

COLOR BKGND DATA........................................................................................... 4-33

COLOR DATA ........................................................................................................ 4-33

BRIGHTNESS........................................................................................................ 4-33

DETAIL ................................................................................................................... 4-34

4.7 SYSTEM ................................................................................................................. 4-36

INTER SWITCH (Cannot use while transmitting) .................................................. 4-36

TIME....................................................................................................................... 4-37

ASSISTANT DISP .................................................................................................. 4-38

TGT LIST SORT..................................................................................................... 4-39

USER ..................................................................................................................... 4-39

EDIT USER NAME................................................................................................. 4-39

SOUND .................................................................................................................. 4-39

FREQUENCY......................................................................................................... 4-39

KEY CLICK............................................................................................................. 4-39

BITE ....................................................................................................................... 4-40

TOTAL HOUR......................................................................................................... 4-40

0093129012-06 xiii

Contents MDC-2900 Series

TX HOUR ...............................................................................................................4-40

VERSION ...............................................................................................................4-40

DETAIL ...................................................................................................................4-41

4.8 MAINTENANCE...................................................................................................... 4-42

START UP ..............................................................................................................4-42

I / O......................................................................................................................... 4-43

DETAIL ...................................................................................................................4-45

OS PROFILE (Cannot use while transmitting) ....................................................... 4-46

SECTOR MUTE (Cannot use while transmitting) ..................................................4-47

PRESET .................................................................................................................4-48

BACKUP (Cannot use while transmitting).............................................................. 4-52

TOTAL HOUR (Cannot use while transmitting)......................................................4-52

TX HOUR (Cannot use while transmitting) ............................................................4-52

4.9 Menu configuration............................................................................................... 4-53

Chapter 5 Specification......................................................................................... 5-1

5.1 Antenna and Scanner............................................................................................. 5-1

5.2 Display unit and processor unit ............................................................................ 5-2

5.3 External view and dimensions............................................................................... 5-3

Chapter 6 Principle of radar system.................................................................... 6-1

6.1 What is radar system?............................................................................................ 6-1

Side lobe................................................................................................................... 6-1

Beam width...............................................................................................................6-2

6.2 Characteristics of radar radio wave...................................................................... 6-2

Target hardness reflected ......................................................................................... 6-2

Radar shadow ..........................................................................................................6-3

False image .............................................................................................................. 6-3

6.3 Radar interference................................................................................................... 6-5

6.4 Receiving the Radar Beacons, SART and Radar Enhancer ............................... 6-6

Chapter 7 Simple fault diagnostics...................................................................... 7-1

7.1 No alarm sound (ALARM TEST) ............................................................................ 7-2

7.2 Operation unit (panel) key is not operational (PANEL TEST)............................. 7-3

7.3 TT (ARPA) is not operational (DIAGNOSE TT) ..................................................... 7-4

7.4 No AIS display (DIAGNOSE AIS)............................................................................ 7-5

7.5 Need to confirm serial input (SERIAL MONITOR)................................................ 7-6

7.6 No video display (ANT MONITOR)......................................................................... 7-7

7.7 Screen is frozen....................................................................................................... 7-8

xiv 0093129012-06

MDC-2900 Series Contents

About alarms........................................................................................................... 7-9

7.8

Alarm list................................................................................................................. 7-11

Warning list............................................................................................................. 7-13

Chapter 8 Index......................................................................................................8-1

0093129012-06 xv

Introduction MDC-2900 Series

Introduction

The MDC-2900 series is a compact and high performance shipboard radar system consisting of the

antenna & scanner unit with a transmit power of 6kW/12kW/25kW, a display unit with a 19 inch color

LCD (Liquid Crystal Display) display and operating panel unit.

For this radar, its multi functions and high performance are accomplished with microcomputer

technology as well as an image processing in the newly developed radar-dedicated LSI (Large Scale

Integration).

 A slim display unit using liquid crystal technology.

 Stable indication and reliable acquisition of a small target.

 Clear distinction between a moving target and land by true trail display.

 Provision of multi targets TT (ARPA) information and the chart display (mandatory or optional).

 Various models for selection of an optimum radar for your needs.

 Simple and easy operation by user-friendly rotating knobs.

 Capable of adjusting gain, anti- sea clutter, anti- rain clutter, bearing cursor, and range marker, etc.

using rotating knobs.

 The waterproof operating panel (IPX2) has a great flexibility in installation.

xvi 0093129012-06

MDC-2900 Series Configuration items

Configuration items

System configuration

MDC-2960/2910/2920

No. Name Type

1 Antenna *

2 Scanner **

3 Display unit MRD-105

4 Operation unit with connecting cable MRO-105

5 Connecting cable 242J159098B-15M

6 DC power cable CW-259-2M

7 Spare parts SP-100

8 Installation material M12-BOLT.KIT

9 Installation material CONNECTOR.KIT

10 Operation manual 0093129012

11 Installation manual 0092629012

12 Quick reference 0093129042

* RW701A-04: 4feet, RW701A-06: 6feet, RW701B-09: 9feet

** RB717A: 6kW (MDC-2960), RB718A: 12kW (MDC-2910), RB719A: 25kW (MDC-2920)

MDC-2960BB/2910BB/2920BB

No. Name Type

1 Antenna *

2 Scanner **

3 Processor unit MRM-105

4 Operation unit with connecting cable MRO-105

5 Connecting cable 242J159098B-15M

6 DC power cable CW-259-2M

7 Spare parts SP-100

8 Installation material M12-BOLT.KIT

9 Installation material CONNECTOR.KIT

10 Operation manual 0093129012

11 Installation manual 0092629012

12 Quick reference 0093129042

* RW701A-04: 4feet, RW701A-06: 6feet, RW701B-09: 9feet

** RB717A: 6kW (MDC-2960BB), RB718A: 12kW (MDC-2910BB), RB719A: 25kW (MDC-2920BB)

0093129012-06 xvii

Configuration items MDC-2900 Series

Option

No. Name Type Comment

1 Gyro Interface S2N, U/N 9028C Gyro converter

2 Gyro Log

Interface

3 Log pulse NMEA

converter

Rectifier unit

4 PS-010 5A fuse attached. For 4 or 6 foot antenna only.

5

6 AC power cable VV-2D8-3M Without a connector on the both sides

Connecting

7 CW-373-*

cable

8 CW-374-5M

9 CW-376-5M 6 pin-waterproof/left unattended

10 CW-387-5M 8 pin-waterproof/left unattended

11 CW-406-5M 8 pin-waterproof/left unattended

NCT-4106 CFQ-6998 attached.

L1N, U/N 9181A 200pulse/NM only

VL-PGS001 20A fuse attached. For 9 foot antenna only.

With 6 pin-waterproof connector on the both

*: 5M, 10M, 30M

sides (cable for data)

With 6 pin-waterproof/6 pin（1006 series）

(cable for data)

(cable for data)

(cable for AIS)

(cable for HDG input)

12 CW-561-*

*: 10M, 30M

13 CW-576-0.5M 10 pin- waterproof /D-SUB(female) + Alarm out

14

Antenna unit –

15 242J159098C-20M With a connector on the both sides

Display unit

16 242J159098D-30M With a connector on the both sides

connecting cable

17

CW-560-2M With D-SUB on the both sides

242J159098E-XM

X: 65m max

With a connector on the both sides

(connector for slave display)

Cable for external display unit

With a connector on the both sides

xviii 0093129012-06

MDC-2900 Series Chapter 1 Adjustment in installation

Chapter 1 Adjustment in installation

1.1 Menu usage

Refer to “Menu usage” (page3-1)

*About the shaded menu:

[Inters witch] in [System] menu, and [Sector mute], [Backup], [Transmission time] and [Operating time]

in [Maintenance] menu are not available during transmission, and they are all shaded.

1.2 Tuning method

The transmitted and received frequency of this radar may become detuned by environmental changes.

This results in “detuning” of the gain and the same image may be hard to be seen, even if the setup is

the same as before.

[Tuning method] can be changed directly in the upper light of the screen, with trackball and [ENT] key,

without using menu function.

Auto tuning

This function automatically compensates detune caused by environmental changes.

Sometimes, as auto tuning adjusts to optimize strong echo, weak echo may be weakened too much

when strong echo such as from land is received.

Adjust [AUTO ADJ] to optimize value if echo from the object target is weak.

[MENU] => [MAINTENANCE] => [STARTUP] => [TUNE AUTO ADJ]

Manual tuning

Perform all adjustments manually.

[MAN ADJ] adjustment is required whenever detuning is caused by environmental changes.

[MENU] => [MAINTENANCE] => [STARTUP] => [TUNE MAN ADJ]

[MENU] => [RADAR] => [TUNE AUTO ADJ]

Optimized value setup method

Adjustment shall be performed based on stable echo object such as from land. (Land is used in

following explanation.)

1 Set “RAIN” and “SEA” to 0.
2 Weaken Gain until land echo is nearly disappears.
3 Press [MENU] key, select [MAINTENANCE] => [STARTUP] =>.
4 Adjust [AUTO ADJ] or [MAN ADJ] to get the strongest land echo.
5 Repeat step 2 to 4 then adjustment is completed.

0093129012-06 1-1

Chapter 1 Adjustment in installation MDC-2900 Series

1.3 Picture bearing adjustment (HL OFFSET)

The bearing on the radar screen is adjusted.

1 Change the range scale to 1 NM or more by pressing “+” (or “-”) key on the transmission display.
2 Select a visible fixed object as far as possible and measure its bearing using magnetic compass or

equivalence. Measure the bearing of the same target on the radar screen. Adjust it according to

the following procedures when both values differ one degree or more.

3 Press [MENU] key to display menu, select [MAINTENANCE] => [STARTUP] => [HL OFFSET] =>

VALUE and indicate the last digit of the input value by highlighted character.

4 Move a trackball up or down to adjust the value to match the bearing value of the target picture to

the compass value.

5 Press [ENT] key to determine adjustment result.

1-2 0093129012-06

MDC-2900 Series Chapter 1 Adjustment in installation

1.4 Adjustment of transmitting delay time (TX DELAY)

This adjustment is intended to match the picture on a radar window with the distance of an actual target

through adjustment of the transmission delay time. For the purpose of accurate adjustment, a hard,

long, straight object such as a quay wall extended on a near (within about 100m) position is utilized to

produce good result. Transmitting delay time is adjusted in accordance with the following procedures.

1 Change the range scale to 0.125 NM by pressing “+” (or “-”) key on the transmission display.
2 Press [MENU] key to display menu, select [MAINTENANCE] => [STARTUP] => [TX DELAY] =>.
3 Move a trackball up or down to adjust the value to get a straight picture of the straight object in the

screen as shown in follow image.

4 Press [ENT] key to determine adjustment result.

GoodToo near

Too far

0093129012-06 1-3

Chapter 1 Adjustment in installation MDC-2900 Series

1.5 Setup antenna height

Set up antenna installation height from sea level.

Effect of anti sea-clutter varies depending on the above setup.

1 Press [MENU] key to display “Menu”.

Select [MAINTENANCE] => [STARTUP] => [ANT HEIGHT] => and press [ENT] key after selecting

the setup value.

1.6 Setup antenna cable length

Set up antenna cable length.

Improper setting of antenna cable length may result in degraded target detection.

1 Press [MENU] key to display “Menu”.

Select [MAINTENANCE] => [STARTUP] => [ANT CABLE] => and press [ENT] key after selecting

the setup value.

1.7 Setup of MBS (Main Bang Suppression) value

This setting is utilized to suppress (mute) transmitting leak of small dark circle spot signal at the center

of the display.

1 Set range to 0.125 NM, RAIN knob to 0, SEA knob to 0, GAIN knob to 80%, and brilliance to

maximum respectively.

2 Press [MENU] key to display “Menu”.

Select [MAINTENANCE] => [STARTUP] => [MBS] => Value by highlighted character using

trackball.

3 Turn sea knob to display transmitting leak circle at the center of the picture.

Transmitting leak

4 Move a trackball up or down to increase MBS value from zero with observing the center circle.

Press [ENT] key to determine when the circle has just faded out.

1-4 0093129012-06

MDC-2900 Series Chapter 1 Adjustment in installation

1.8 Setup own ship profile (Cannot use on transmitting)

Set up own ship outline.

Set up antenna location from CCRP (Consistent common reference point).

1 Press [MENU] key to display “Menu”.

Select [MAINTENANCE] => [OS PROFILE] => and press [ENT] key after selection.

This setup is to designate OUTLINE and antenna location of CCRP.

When show the own ship profile, turn ON own ship profile.

Refer to “SHIP OUTLINE” (page4-14).

Ship's width (C+D) is 10m or less, even 0.125NM does not show the own ship profile.

About [Reference point]

The base point for range, bearing, relative course, relative speed, CPA or TCPA, EBL or VRM is named

[Reference point], respectively.

Either CCRP or ANT position can be used as the reference point.

Selection of the reference point is made in [REF] located of the upper left side.

*The center of echo image (PPI) is ANT.

When CCRP is selected for the reference point, there is possibility that CCRP locates outside of 90 %

echo image area in short distance range.

In this case, the reference point is automatically changed to ANT position.

*TRAIL is erased and new trail is displayed upon change of the reference point.

0093129012-06 1-5

Chapter 1 Adjustment in installation MDC-2900 Series

1.9 Inside save of setup data at the time of setting up
(Cannot use while transmitting)

With saving setup data at the time of setting up inside radar, the initial setup status at the time of setting

up can be restored again, whenever optimal image display can not be obtained due to wrong operation

at the time of changing setup value.

All values that have been changed after delivery from the plant such as menu setup, screen setup and

MAP input data, etc. will be stored.

When saving setup data at the time of setting up,

1 Press [MENU] key to display “Menu”.

Select [MAINTENANCE] => [BACKUP] => [SYSTEM SAVE] => [GO] and then press [ENT] key.

When restoring setup data at the time of setting up,

1 Press [MENU] key to display “Menu”.

Select [MAINTENANCE] => [BACKUP] => [SYSTEM LOAD] => [GO] and then press [ENT] key.

* Inside save of setup data should be surely saved after initial setup.

When some malfunction of display unit is found, such as frozen screen, initialization may be required.

By performing inside save of setup data, the setup data at the time of setting up can be restored after

initialization.

Refer to “Screen is frozen” (page7-8).

List of retained parameters

MENU Refer to “General operation (Menu)” (page4-1).

RADAR

Refer to

Page 4-1.

ALARM

Refer to

Page 4-6.

TUNE MAN ADJ TGT AUTO ACQ

TRAIL TRUE / REL TGT GZ

TRAIL TIME AIS SLEEPING LOST

TRAIL SHAPE AIS NO HDG / COG

TRAIL DETECT LEVEL NAVLINE CROSS

TRAIL RESET

OFF CENT POINT VECT TRUE / REL

AUTO OFF CENT VECT TIME

ECHO ALARM VECT TIME INCREMENT

ECHO ALARM MODE TGT ID DISP

ECHO ALARM DETECT LEVEL ID DISP SIZE

MAP AREA INPUT RNG

PRIORITY

OS/TGT

Refer to

Page 4-10.

MAP AREA DETECT LEVEL ASSOCIATION

TGT CPA / TCPA

1-6 0093129012-06

ASSOCIATION RNG

MDC-2900 Series Chapter 1 Adjustment in installation

MENU

OS/TGT

Refer to

Page

4-10.

ASSOCIATION CRS EBL2 OFFSET

ASSOCIATION SPD DISP

ASSOCIATION SPD LIM GROUP

ASSOCIATION TIME REPRIEVE DISP COAST LINE

AUTO ACQ AREA DISP NAV LINE

OS STAB INDICATOR DISP ROUTE

OS ANT POSN DISP EVENT MARK

OS PAST TRK TIME DISP AREA

OS PAST TRK TIME INCREMENT EDIT COAST LINE

OS STERN LINE EDIT NAV LINE

OS SHIP OUTLINE EDIT ROUTE

AIS EDIT EVENT MARK

AIS SELECT ID EDIT AREA

AIS LABEL MONITORED ROUTE

AIS SHIP OUTLINE WPT ID DISP

AIS HDG LINE DATUM

AIS TURN INDICATOR POSITION OFFSET

MAP

Refer to

Page 4-25.

TOOL

Refer to

Page

4-20.

AIS CLASS B

AIS ATON COLOR

AIS SAR ECHO

AIS BASE TRAIL

AIS OS DISP BKGND PPI

AIS MESSAGE DISP BKGND DATA

TT (ARPA) DATA

TT (ARPA) SELECT ID BRIGHTNESS ECHO

TT (ARPA) EDIT NAME BRIGHTNESS TRAIL

TEST TGT BRIGHTNESS BKGND

RR BRIGHTNESS OS/TOOL

BRG TRUE / REL BRIGHTNESS TGT

CURSOR SHAPE BRIGHTNESS MAP/ROUTE

PI LINE BRIGHTNESS CURSOR

PI LINE DISP BRIGHTNESS DATA

PI LINE START RND BRIGHTNESS WARNING

PI LINE END RNG

BRILL

Refer to

Page 4-33.

MAN OFFSET

BRIGHTNESS ALARM

PI DISP SIDE INTER SWITCH MODE

EBL1 OFFSET

SYSTEM

INTER SWITCH ANT POSN

0093129012-06 1-7

Chapter 1 Adjustment in installation MDC-2900 Series

MENU

SYSTEM

Refer to

Page 4-36.

MAINTENANCE

Refer to

Page 4-42.

TIME POSITION DATUM

ASSISTANT DISP SET / DRIFT

TGT LIST SORT SET / DRIFT MAN

USER TIME

SOUND TIME CLOCK TIME ZONE

SOUND FREQUENCY TIME CLOCK SET

SOUND KEY CLICK DETAIL OUTPUT NAV

BITE SERIAL SEL DETAIL OUTPUT EPFS

MON DETAIL ALROUT SEL

LANG DETAIL INPUT

TUNE DETAIL FORMAT

TUNE AUTO ADJ OS PROFILE

TUNE MAN ADJ SECTOR MUTE

HL OFFSET SECTOR MUTE START

TX DELAY SECTOR MUTE END

ANT HEIGHT PRESET GAIN MAN

ANT CABLE PRESET GAIN OFFSET BW

MBS PRESET SEA AUTO LAND

FUNCTION KEY F1 PRESET SEA AUTO SEA

FUNCTION KEY F2 PRESET SEA MAN MAX

FUNCTION KEY F3 PRESET SEA MAN MIN

FUNCTION KEY F4 PRESET SEA MAX OFFSET

FUNCTION KEY F5 PRESET RAIN MODE

FUNCTION KEY F6 PRESET RAIN MAX

HDG OFFSET PRESET RAIN MIN

STW PRESET CFAR MAX

STW MAN PRESET CFAR MIN

COG / SOG PRESET MBS

POSITION PRESET TT (ARPA) TGT

LEVEL

POSITION MAN PRESET VIDEO SETUP

POSITION OFFSET PRESET VIDEO SETUP HIGH

POSITION OFFSET MAN

PRESET VIDEO SETUP LOW

1-8 0093129012-06

MDC-2900 Series Chapter 1 Adjustment in installation

DISPLAY Refer to “Name of radar display” (page2-2).

RANGE Refer to page2-6 EBL1 Refer to page2-15

MODE Refer to page2-23 EBL2 Refer to page2-15

STAB Refer to page3-2 PI Refer to page2-17

Antenna position Refer to page4-11 PI TRUE / REL Refer to page2-17

OFF CENT Refer to page2-22 ERBL Refer to page2-20

STANDBY / TX Refer to page2-5 ERBL TRUE / REL Refer to page2-20

Pulse length Refer to page2-13 CURSOR TRUE / REL

REFERENCE Refer to page1-5 VRM1 Refer to page2-14

INTER SWITCH Refer to page4-36 VRM2 Refer to page2-14

TUNE Refer to page1-1 TIME Refer to page4-44

BRILL Refer to page2-5 VECT Refer to page3-15

PANEL Refer to page2-1 VECT TRUE / REL Refer to page3-15

PROCESS Refer to page3-4 LIMIT CPA Refer to page3-15

ENH Refer to page3-6 LIMIT TCPA Refer to page3-15

IR Refer to page3-7 LOST ALARM

VIDEO Refer to page3-8 ASSOCIATION Refer to page3-18

DAY/NIGHT Refer to page2-21 AIS Refer to page3-38

SECTOR MUTE Refer to page4-47 TT (ARPA) Refer to page3-24

MAP DISP Refer to page4-25 PAST POSN Refer to page3-17

TRAIL TIME Refer to page3-9 FILTER CPA/TCPA Refer to page3-39

TRAIL TRUE / REL Refer to page3-9 FILTER RNG Refer to page3-39

OS PAST TRK TIME Refer to page4-12 FILTER CLASS Refer to page3-39

OS PAST TRK TRUE / REL Refer to page4-12 AIS AUTO ACQ CPA/TCPA Refer to page3-39

EBL TRUE / REL Refer to page2-15 AIS AUTO ACQ RNG Refer to page3-39

EBL OFFSET Refer to page4-21 ASSISTANT DISP Refer to page4-38

0093129012-06 1-9

Chapter 1 Adjustment in installation MDC-2900 Series

1.10 External save of setup (Cannot use on transmitting)

To prepare for the case when the radar becomes inoperative, setup value can be stored externally and

can read out.

All values that have been changed after delivery from the plant such as menu setup, screen setup and

MAP input data, etc. will be stored.

This is also effective when replacing the radar.

The external saving shall be stored by a PC (Personal Computer) with serial communication facility

[with serial ports provided or USB (Universal Serial Bus) - serial conversion cable attached].

Dedicated software is required for PC.

Dedicated cable is required to connect the radar with PC.

Please contact with the sales agent or directly with our sales department for PC software and the

dedicated cable.

Carry on the following procedure after confirming the setup values is saved in the external PC and can

be read out.

When saving setup values externally,

1 Press [MENU] key to display “Menu”.

Select [MAINTENANCE] => [BACKUP] => [EXT SAVE] => [GO] and then press [ENT] key.

When reading out setup values from external PC,

1 Press [MENU] key to display “Menu”.

Select [MAINTENANCE] => [BACKUP] => [EXT LOAD] => [GO] and then press [ENT] key.

1-10 0093129012-06

MDC-2900 Series Chapter 2 Basic operation (Panel)

Chapter 2 Basic operation [for operating unit (panel)]

2.1 Illustration of operating unit (panel)

1 23 4 5 6 7 8 9 1011 121314

DA Y

SP
LP

ENTACQOFF

15 16 17 18 19 20 21 22 23 24 25 26 27 28

No. Page No. Page

1 [DAY / NIGHT] key 2-21 15 [Power On/Off] key

2 [Pulse length Short/Long] key 2-13 16 Power lamp

3 [EBL1] key 17 [Stand by/TX] key 2-5

4 [EBL2] key

2-15

18 [EBL] knob 2-15

5 [Anti-rain clutter] knob 2-10 19 [Offset] lamp 2-16

2-4

6 [Anti-sea clutter] knob 2-8 20 [Display brilliance] key 2-5

7 [Gain] knob 2-7 21 Function keys 2-27

8 [VRM2] key 22 [Panel illumination] key 2-5

9 [VRM1] key

2-14

23 [Parallel index lines] lamp 2-17

10 [ERBL] key 2-20 24 [VRM] knob 2-14

Heading line/

11

2-21 25 [Off center] key 2-22

Alarm sound [Off] key

12 [Menu] key 3-1 26 [Display mode] key 2-23

13 [Acquisition] key 3-24 27 [Range] key 2-6

14 [Enter] key --- 28 Track ball ---

0093129012-06 2-1

Chapter 2 Basic operation (Panel) MDC-2900 Series

2.2 Name of radar display

3

2-2 0093129012-06

MDC-2900 Series Chapter 2 Basic operation (Panel)

No. Page No. Page

1 Display mode 2-23 23 MAP 4-25

2 Range rings 3-11 24 Sector mute 4-47

3 Range 2-6 25 PI (Parallel index line) 2-17

4 STAB 3-2 26 EBL 2-15

5 Antenna position 4-37 27 ERBL 2-20

6 Off center 2-22 28 VRM 2-14

7 Pulse length 2-13 29 Date / Time 4-37

8 STAND BY / TX 2-5 30 Heading 4-43

9 Reference 1-5 31 CTW / STW 4-43

10 Day / Night 2-21 32 SET and DRIFT 4-44

11 Video 3-8 33 Own ship position 4-44

12 IR 3-7 34 Vector 3-15

13 Enhance 3-6 35 CPA / TCPA 3-15

14 Processing 3-4 36 AIS 3-38

15 Inter switch 4-36 37 TT (ARPA) 3-24

16 Brilliance and illumination 2-5 38 Past position 3-17

17 RAIN 2-10 39 Filter 3-39

18 SEA 2-8 40 Auto ACQ 3-39

19 GAIN 2-7 41 Assistant display 4-38

20 Tuning 1-1 42 Zoom 4-2

21 Own ship past track 4-12 43 Hold 4-2

22 TRAIL 3-9 44 Ferry 4-4

0093129012-06 2-3

Chapter 2 Basic operation (Panel) MDC-2900 Series

2.3 Power On/Off

Power On

Hold [POWER ON/FF] key until buzzer sound occurs. Radar system is activated with [Peep] sound.

·After the power on, wait for 120 sec. (*1) or 180 sec. (*2) until [WAIT] countdown sign at the center of

the display has disappeared.

·The brilliance of the display is set to the previous value of the last power off.

·During operation, [POWER LAMP] under [POWER ON/OFF] key lights up red.

(*1) MDC-2960/2910/2960BB/2910BB

(*2) MDC-2920/2920BB

*The power source shall not be turned off until operational screen is displayed.

Power Off

Hold [POWER ON/FF] key for five sec. for power off.

*The power source shall be turned off by pressing [POWER ON/FF] key without fail.

When the power source is stopped in power-on state, an important setup data may be lost.

The re-entry of power shall be performed after five seconds or more have passed after power source

shutdown.

2-4 0093129012-06

MDC-2900 Series Chapter 2 Basic operation (Panel)

r

2.4 Change brilliance of display unit

Change display brilliance

1 Press [BRILL] key.
2 A triangle mark will appear at the left of BRILL adjustment window in the upper right of the screen.

3 Turn [EBL] knob to clockwise to increase display brilliance.

Turn [EBL] knob to counterclockwise to decrease the display brilliance.
The display brilliance changes at five steps by pushing [EBL] knob.

Darker

Push

Brighte

EBL knob

Change lighting of operating panel illumination

1 Press [PANEL] key
2 A triangle mark will appear at the left of PANEL illumination adjustment window in the upper right of

the screen.

3 Turn [VRM] knob to clockwise to increase the lighting of the panel illumination.

Turn [VRM] knob to counterclockwise to decrease the lighting of the panel illumination.
The panel illumination changes at five steps by pushing [VRM] knob.

BrighterDarker

Push

VRM knob

2.5 Transmission

A Menu will once disappear if transmission is turned on or off. For menu operation, display a menu
again.

Start transmission

Press [STBY/TX] key in [STAND-BY] status to start transmission.
After the power on, [STAND-BY] status is displayed after 120 sec. (*1) or 180 sec. (*2)

(*1) MDC-2960/2910/2960BB/2910BB
(*2) MDC-2920/2920BB

Stop transmission

Press [STBY/TX] key in [Transmission] status to stop transmission.
The status returns to [STAND-BY] after the end of transmission.

0093129012-06 2-5

Chapter 2 Basic operation (Panel) MDC-2900 Series

2.6 Change range (indicated distance)

The amount of coverage area can be changed with selecting range.

Larger the value of range the more the coverage area expands. (But a target will become smaller.)

The range value is indicated at the upper left on the display.

[RANGE] can be changed directly at the upper left of the screen, with trackball and [ENT] key, without

using [RANGE] key.

Range is changed centering on the antenna location.

1 Press [Range +] key to zoom out the picture, and to observe a wider area.

Press [Range -] key to zoom in the picture, to magnify and to observe nearby Antenna position.

Range

ANT position

1.5

Model-specific ranges are as shown below.

Model name

Range(NM) 0.125 0.25 0.5 0.75 1.5 3 6 12 24 48 72 96

MDC-2920/MDC-2920BB (Max. output : 25 KW)

MDC-2910/MDC-2910BB (Max. output : 12 KW)

MDC-2960/MDC-2960BB (Max. output : 6 KW)

*Bearing scale

Indicated distance

*About bearing scale

Bearing scale is useful to identify heading of own ship and target bearing.

If bearing mode is [TRUE], north is expressed as 0°.

If bearing mode is [REL], heading of own ship is expressed as 0°.

Refer to “Bearing mode set up ” (page3-12)

Central point of bearing scale is reference point.

Refer to “Setup own ship profile” (page1-5) to setup reference point.

2-6 0093129012-06

MDC-2900 Series Chapter 2 Basic operation (Panel)

b

2.7 Adjust receiver gain (GAIN)

It is recommended to adjust [GAIN] in the top right side of the screen to have the evenly scattered

vague background noise with low intensity in the PPI.

Lower [GAIN] than required may result in overlooking small vessels and buoys.

Higher [GAIN] than required may result in difficult discrimination between small ships and densely

displayed high level background noise.

Under some situation, desired target object may be masked by side lobe of antenna directivity or false

echo by multi pass.

Refer to “Principle of radar system” (page6-1)

Lower [GAIN] until masked target echo can be recognized outside of the area where 2.8 “Reject sea

clutter (anti-SEA)” is effective.

However since lower [GAIN] tends to lose weak target echo, try to return the [GAIN] to original position

each time [GAIN] is changed to maintain target recognition. In the short distance area where anti-SEA

is effective, recognize target by adjusting MAN SEA.

When suppressing RAIN clutter (rain & snow), adjust GAIN-knob and RAIN-knob side by side.

Refer to “Reject sea clu tter (anti-SEA)” (page2-8)
Refer to “Reject rain/snow clutter (anti-RAIN)” (page2-10)

[GAIN] state is displaying in the upper left of the screen.

1 Turn [GAIN] knob to clockwise to increase receiving gain.

Turn [GAIN] knob to counterclockwise to decrease the receiving gain.

Gain

Down

Note:

• Decrease gain for shorter range and dense targets.

• Increase gain for long range targets and small target however take care in not using too much gain

and losing targets in the surrounding noise.

• Adjustment is not available while RAIN MODE is set to CFAR (Constant False Alarm Rate).

Refer to “RAIN MODE” (page4-50)

Result picture after adjustment a [GAIN] kno

Up

Land

Own
ship

Land

Own
ship

Land

Own
ship

0093129012-06 2-7

Chapter 2 Basic operation (Panel) MDC-2900 Series

2.8 Reject sea clutter (anti-SEA)

MAN (manual) SEA and AUTO (automatic) SEA are provided

for anti-SEA function. On the rough sea, SEA clutter noise

appears around antenna position (center spot), and short

distant targets are masked and not recognizable. In that case,

anti-SEA function suppresses SEA clutter noise and reveals

masked target echoes. Recommended adjustment of anti-SEA

is to adjust to make echoes from SEA clutter vaguely displayed

SEA clutter at center

after Adjusted MAN SEA

If target echoes are masked by excessive false echoes within anti-SEA effective, then adjust MAN SEA

to confirm it. Excessive anti-SEA may lose echoes from small ships and buoys. So, return to

appropriate anti-SEA level for normal use.

• Small target becomes harder to detect when SEA is used together with RAIN.

• Adjustment is not available while RAIN is set to CFAR (Constant False Alarm Rate).

by dark level.

If [SEA] level is too high to show sea clutter noise, short distance

gain is over suppressed and it may result in loss of targets like

buoys and small ships.

On the other hand, if [SEA] level at top left side of the screen is too

low, clutter noise around antenna position (center spot) is

displayed by high intensity level and it makes difficult to

discriminate small ships and buoys from sea clutter.

Anti-SEA is effective to suppress false echoes and ground clutter

in short distance. However adjustment of GAIN should be used

beyond effective coverage of anti-SEA.

Refer to “Reject rain/snow clutter (anti-RAIN)” (page2-10)

Selection of MAN SEA and AUTO SEA

By control-knob

When the [SEA]-knob is pressed, [AUTO SEA] and [MAN SEA] change alternately.

By trackball

1 Roll the trackball to place the + CURSOR on the [MAN] or [AUTO] (whichever is shown) at right

side of [SEA] on the top of the display.

2 Push the [ENT] key to display [AUTO] or [MAN] as appropriate.

2-8 0093129012-06

MDC-2900 Series Chapter 2 Basic operation (Panel)

A

AUTO adjustment of the SEA

When [AUTO SEA] is set, anti-SEA is adjusted automatically.

Note:

AUTO SEA may erase weak target echoes. If excessive SEA clutter is erased excessively or too much

clutter is observed, fine-adjust by [SEA] knob in the cases of software versions of KM-E68V2.01C and

after. In the cases of versions earlier than KM-E68V2.01C, adjust it by referring to Installation Manual

Adjust the AUTO SEA. In case there are strong echo targets within 500m radius from the radar antenna

such as in the harbor or canal, anti-SEA tends to suppress excessively. Use MAN SEA in that case.

Manual adjustment of the SEA

When [MAN SEA] is selected, anti-SEA can be adjusted manually.

By using [SEA] knob, suppress this effect and make targets easier seen.

[SEA] state is displayed in the upper left of the screen.

1 Turn [SEA] knob to clockwise to increase anti-sea clutter effect.

Turn [SEA] knob to counterclockwise to decrease anti-sea clutter effect.

2 Turn [SEA] knob clockwise until even dark SEA clutter is displayed by observing the screen.
3 Adjust [SEA] knob from time to time to get dark SEA clutter on the screen as intensity of SEA

clutter changes as time passes.

SE

Low

Note:

• When waves do not affect the result, turn the knob fully counterclockwise.

• This function reduces gain in closest ranges. Too much sea clutter may result actual targets being

lost.

• Manual [SEA] shall be kept watched for sea clutter and adjusted to the optimal value adapting to

changes.

• If [SEA] and [anti-RAIN] are used in combination, then small targets will be less visible.

High

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Chapter 2 Basic operation (Panel) MDC-2900 Series

2.9 Reject rain/snow clutter (anti-RAIN)

In rain or snow, targets become hard to be seen as a result of

unwanted weather reflection.

Rain or snow image appears as a large target echo with

surrounding mid gradation rim as shown by the picture.

Anti-RAIN has DIFF and CFAR.

Adjustment of DIFF (Differentiation) and CFAR (Constant False

Alarm Rate) by turning [RAIN] knob suppresses clutter, and makes

the picture easier to observe.

DIFF is effective for suppression of rain and snow.

Rain clutter

[RAIN MODE] can be changed directly in the upper light of the screen without using menu function.

CFAR is effective for suppression of sea clutter.

Refer to “RAIN MODE” (page4-50)

• Small target becomes harder to detect when RAIN is used together with SEA.

• The performance of radar detection range is degraded by rain as shown in the figure below.

Changing method of CFAR and DIFF

By [RAIN] knob

When the [RAIN] knob is pressed, [DIFF] and [CFAR] change because of the alternation.

By trackball

1 Roll the trackball to place the + CURSOR on the [DIFF] or [CFAR] (whichever is shown) at right

side of [RAIN] on the top of the display.

2 Push the [ENT] key to alternate [CFAR] and [DIFF].

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MDC-2900 Series Chapter 2 Basic operation (Panel)

CFAR (Constant False Alarm Rate) adjustment

CFAR function is applicable when [CFAR] is indicated at the upper

right side of the screen.

CFAR has superiority over DIFF (Differentiation) as small target

echoes cannot be slimed.

Level of [RAIN CFAR] is indicated in the left side of [CFAR]

indication.

After adjust CFAR

1 Turn [RAIN] knob to clockwise to increase anti-clutter effect.

Turn [RAIN] knob to counterclockwise to decrease anti-clutter effect.

RAIN

Weak

Strong

2 Turn [RAIN] knob clockwise to get eve dark clutter while watching the screen.

Note:

• The knob should be turned to leftmost position in normal environment.

• Turning the knob to the right shows the targets hidden in the rain/snow image, but care shall be taken

that small target may be hidden and not displayed.

• If there are strong echo targets within 500m radius from the radar antenna such as in the harbor or

canal, CFAR tends to suppress targets excessively. In that case change CFAR to DIFF and use MAN

SEA in addition.

• If CFAR is selected, then [GAIN] and [SEA] knobs become invalid.

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Chapter 2 Basic operation (Panel) MDC-2900 Series

RAIN DIFF (Differentiation) adjustment

after adjusted anti-SEA

after adjusted anti-SEA & RAIN DIFF

1 Turn [RAIN] knob to clockwise to increase anti-clutter effect.

Turn [RAIN] knob to counterclockwise to decrease anti-clutter effect.

RAIN

Weak

Strong

2 Use anti-SEA (AUTO SEA or MAN SEA).

Refer to “Reject sea clutter (anti-SEA)” (page2-8)

3 While observing the screen, suppress RAIN clutter outside of anti-SEA effective area by turning

[RAIN] knob clockwise. Adjust RAIN so that it may remain as small spots.

4 While observing the screen, turn [GAIN] knob counterclockwise to make the small spots to dark

spots.

5 Intensity of RAIN clutter is affected by weather. Adjust by [RAIN] knob according to weather

change by watching the screen.

Note:

• The knob should be turned to leftmost position in normal environment.

• Turning the knob to the right shows profiles of the targets hidden in the rain/snow image, but care shall

be taken that small target may be hidden and not displayed.

• Small target becomes harder to detect when RAIN is used together with SEA.

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MDC-2900 Series Chapter 2 Basic operation (Panel)

2.10 Change transmission pulse length (SP/LP)

This radar provides a function capable of achieving suitable target detection by manually changing the

transmission pulse length.

Seven types of pulse length are adopted for this radar, SP => MP1 => MP2 => MP3 => MP4 => LP1 =>

LP2.

Pulse length Pulse repetition frequency IF Band width

SP 80ns 2000Hz 15MHz

MP1 200ns 2000Hz 15MHz

MP2 300ns 2000Hz 15MHz

MP3 300ns 2000Hz 5MHz

MP4 600ns 1000Hz 5MHz

LP1 1200ns 500Hz 5MHz

LP2 1200ns 450Hz 5MHz

The short (narrow) pulse length used in short range has high resolution and is effective for dense

targets.

The long (wide) pulse length used in long range has high gain (sensitivity) and is effective for detecting

small targets.

Two types of pulse length are selectable for 1.5NM, 3NM and 6NM.

Range(NM) 0.125 0.25 0.5 0.75 1.5 3 6 12 24 48 72* 96**

SP mode SP SP SP SP MP1 MP2 MP4 LP1 LP1 LP1 LP1 LP2

LP mode SP SP SP SP MP3 MP4 LP1 LP1 LP1 LP1 LP1 LP2

* 72NM is for 12kW only.

** 96NM is for 25kW only.

1 Press [SP/LP] key. Two types of pulse length mode are toggled by each key press.

Current pulse length is shown at the upper left of the display.

* [SP/LP] can be changed directly at the upper left of the screen, with trackball and [ENT] key, without

using menu function.

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Chapter 2 Basic operation (Panel) MDC-2900 Series

2.11 Measure distance and bearing of a target

Measure distance (VRM: Variable Range Maker)

The VRM is used to measure the distance of a target from the reference point.

Refer to “Setup own ship profile” (page1-5) to setup reference point.
Two VRM’s (“VRM1” and “VRM2”) are provided.
Adjust these [VRM] knobs and lay each circle on the desired target to read the distance to the t arget on
the display.

1 Press [VRM1] key to display a broken line circle of VRM1.

The distance to the target is indicated on the lower right on the display, and also a
displayed on the left side of the distance value.

VRM1
Reference point

Target

VRM1

8.990NM

3.290NM

Radius changed by VRM knob
Distance to Target

symbol is

2 The broken line circle is zoomed in or zoomed out by turning [VRM] knob clockwise or

counterclockwise, respectively.
*Turning [VRM] knob (while pressing it) changes the range quickly.
At the same time, the range changes and the distance to the target can be read out on the display.

Decrease of

range

Increase of

range

VRM knob

3 Another press of the [VRM1] key, and the broken circle disappears.

At the same time, the distance value at the lower right of the display disappears.

4 Press [VRM2] key to activate the dotted line circle of VRM2.

Operation procedure and distance displa y are the same as [VRM1].

5 If you want to display both VRM1 and VRM2 simultaneously, press [VRM1] key and [VRM2] key.

Then, both broken line circle and dotted line circle are displayed.

6 Switching between VRM1 and VRM2 is performed with pressing either of [VRM] keys as desired.

When the selected key is pressed, the color of operation panel changes to red.

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MDC-2900 Series Chapter 2 Basic operation (Panel)

Measure bearing (EBL: Electronic Bearing Line)

This feature is used for measuring the bearing of the target from the base point (reference point for
default value.) Two types of [EBL1] and [EBL2] is provided.

Refer to “Setup own ship profile” (page1-5) to set up reference point.

Rotate [EBL] knob and lay each bearing line on the desired target and rea d the bearing on the display.

Refer to “Bearing mode set up” (page3-12) to set up the bearing mode.
[Bearing mode] can be changed directly in the lower left of the screen, with trackball and [ENT] key,
without using menu function.

1 Press [EBL1] key, and the bearing line of EBL1 is displayed as a br oken line.

The bearing value to the target is indicated at the lower left of the display, and a
at the right side of the value.

EBL1
Target

Bearing cahnges
by turning EBL knob

EBL1

060.5°

060.5°

Target bearing from own ship

Reference point

sign is shown

2 Rotate bearing line using the [EBL] knob to adjust the line on the desired target.

The bearing value changes at the same time and you can read the bearing of the target.
*Turning [EBL] knob (while pressing it) changes the bearing quickly.

ClockwiseCounter clockwise

EBL knob

3 Another press of the [EBL1] key, and the broken line disappears and the bearing value on the

lower left of the display disappears.

4 Press [EBL2] key, and the bearing line is shown as a dotted line.

The operation procedure and display of the bearing is the same as [EBL1].

5 If you want to display both EBL1 and EBL2 simultaneously , p ress [EBL1] key and press [EBL 2] key.

Then, you can show both the broken bearing line and the dotted bearing line.

6 Press [EBL] key to switch EBL1 or EBL2 as you want.

The color of selected [EBL] key on the operating panel changes to red.

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Chapter 2 Basic operation (Panel) MDC-2900 Series

Using the EBL based on a position other than reference point (EBL OFFSET)

EBL base point can be changed to the position that is other than the initial reference point.

By changing the base point, the bearing from a random target can be known.

1 Display the EBL for which the base point is required to be changed.
2 Using the trackball, put the cursor on the position to be changed.

Reference point

EBL1

060.5°

060.5°

EBL1

CURSOR

3 Press [EBL] knob, and the base point of EBL changes.

During offset, the color of [Offset lamp] at the lower right of the [EBL] knob changes and the color

of numerical figures indicated is reversed.

EBL knob

Push

EBL1

EBL1

060.5°

060.5°

4 Press the [EBL] knob again, and the base point returns to the reference point.

The base point for VRM cannot be changed.

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MDC-2900 Series Chapter 2 Basic operation (Panel)

V

Measure distance/bearing (PI: Parallel index line)

This function is used to display a parallel straight line from the reference point.

Refer to “Setup own ship profile” (page1-5) to set up reference point.

Display location (distance, bearing) of each line can be changed independently. The length of LINE can

be also designated.

Refer to “Bearing mode set up ” (page3-12) to set up the bearing mode.

[Bearing mode] can be changed directly in the lower left of the screen, with trackball and [ENT] key,

without using menu function.

All lines displayed can be simultaneously changed. When lines of fixed length are required to be used,

please change the mode to “PI MODE”.

Refer to “PI MODE” (page4-22).

1 Push [VRM] knob, and PI is displayed.

When pressing [VRM] knob again, line number will be changed and will be turned off after the last

number of line.

Line number / The total number of display

OFF

1/4

1/4

3/4

3/4

5/4

5/4

6/4

6/4

2 While activated, the bearing and range are shown at the lower left and lower right of the center of

the display, respectively.

The lamp color of PI located at the lower left of [VRM] knob changes.

RM knob

Push

PI REL 1/4

000.0°

PI 1/4

3.000NM

3 The range of selected line can be changed by turning [VRM] knob.

* Turning [VRM] knob (while pressing it) changes the range quickly.

Decrease of

range

Increase of

range

VRM knob

PI REL 1/4

000.0°

PI 1/4

3.000NM

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Chapter 2 Basic operation (Panel) MDC-2900 Series

4 Turning [EBL] knob changes the bearing of a selected line.

* Turning [EBL] knob (while pressing it) changes the bearing quickly.

ClockwiseCounter

clockwise

EBL knob

PI REL 1/4

000.0°

PI 1/4

3.000NM

5 Turning [VRM] knob (while pressing [OFF] key) changes the range of all the displayed lines.

Turning [EBL] knob (while pressing [OFF] key) changes the bearing of all the displayed lines.

* Turning a knob (while pressing it) results in a quick change.

Decrease of range Increase of range

OFF

PIPI RE L PIPI RE L

OFF

VRM knobOFF key

000.0° 2.300NM 000.0° 4.800NM

EBL knobOFF key

PI RE L

045.0°

PI

3.000NM

6 Pressing [VRM] knob (while pressing [OFF] key) returns all the lines to initial position.
7 You can designate [ON/OFF] of the selected line and designate length of each line to be used.

Press [MENU] key to display “Menu”.

Select [TOOL] => [PI] and press [ENT] key after the selection.

LINE: It designates line number (1 to 7) to be set up.

DISP: It designates [ON/OFF] of the line designated by [LINE].

START RNG: It designate the starting range of line designated by [LINE].

END RNG: It designates ending range of the line designated by [LINE].

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MDC-2900 Series Chapter 2 Basic operation (Panel)

8 PI DISP SIDE: It designates the display direction.

HALF

PI

3.000NM

PI REL

000.0°

FULL

PI RE L PI

000.0°

3.000NM

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Chapter 2 Basic operation (Panel) MDC-2900 Series

Measure distance/bearing (ERBL: Electronic range and bearing line)

The given point of distance and bearing can be measured with the cursor as follows.

Measurement of distance and bearing from reference point can be performed by adjusting cursor to

reference point position.

Refer to “Setup own ship profile” (page1-5) to setup reference point.

Refer to “Bearing mode set up ” (page3-12) to setup bearing mode.

[Bearing mode] can be changed directly in the lower light of the screen, with trackball and [ENT] key,

without using menu function.

1 Push [ERBL] key and ERBL is displayed.

ERBL

Target B

Target A

ERBL

000.0

1.00NM

REL

°

CURSOR

2 By adjusting Focus CURSOR to the target A, the measurement of the distance and bearing from

the target A to the target B can be obtained by using [VRM] knob and [EBL] knob.

Own ship

ERBL

REL

°

304.2

2.82NM

3 Pressing [ENT] key (while pressing [OFF] key) returns CURSOR to the reference point position.

Thereafter, it is possible to measure the distance/bearing from the reference point position.

OFF

ENT

OFF key

ENT key

ERBL

304.2

2.82NM

REL

°

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MDC-2900 Series Chapter 2 Basic operation (Panel)

2.12 Change display color (Day/Night)

This function is used for changing of the default display color of day and night.

[DAY/NIGHT] can be changed directly in the upper right of the screen, with trackball and [ENT] key,

without using menu function.

1 Press [MENU] key to display “Menu”.

Select [BRILL] => [COLOR] => Select the mode (day or night) whose display color is to be

changed. After selection, press [ENT] key.

Select [BRILL] => Select the item to set up => After selecting of the “Display color”, press [ENT]

key.

MAP

Set up item

Set up item

Display color

Display color

Set USER1 COLOR/USER2 COLOR by the
combination of R, G and B. This color is set in
USER1/USER2 in the Display color above.

2.13 Remove the heading line

This function is used when a target is overlapped with a heading line and hard to be distinguished.

1 Press [OFF] key to temporarily hide the heading line.

By safety reason, the heading line disappears only while the key is kept pressed. (It is not possible

to keep it removed.)

* This function removes also [MAP], such as COAST LINE, NAV LINE, ROUTE, MARK, and AREA.

Refer to “MAP” (page4-25).

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Chapter 2 Basic operation (Panel) MDC-2900 Series

2.14 Relocate antenna position (Off-centering)

This function is used for getting broad outlook of heading.

Two types of “OFF CENTER” direction are available.

[CURSOR]: Off-centering to CURSOR direction.

[OPPOSITE]: Off-centering to the stern direction.

* When [AUTO OFF CENT] is used, [CURSOR] is unavailable

1 Press [MENU] key to display “Menu”.

Select [RADAR] => [OFF CENT POINT] and press [ENT] key after selecting the set-up value.

MAP

2 Off-centering relocation is executed by pressing [OFF CENT] key.
3 The difference of [CURSOR] and [OPPOSITE] are as follows.

CURSOR OPPOSITE

4 In addition, [AUTO OFF CENT] function is provided.

[AUTO OFF CENT] is a function to display allowing wide range of view of echo in front of own ship

in occasion of turning in C UP

*Relocation area is limited. (See relocation area as shown below.)

28%

72%

RM and N UPRM mode even when the course is changed.

Antenna position relocate area

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MDC-2900 Series Chapter 2 Basic operation (Panel)

2.15 Select screen display (Display mode)

The display mode is a combination of the bearing indication and the target motion indication.
The bearing is indicated in three ways: [HUP], [CUP] and [NUP].
The target motion is indicated in two ways: [RM] and [TM].

•Your ship heading is assumed 65°in following [HUP], [CUP] and [NUP] descriptions.

1 Press [MODE] key. The display changes by the following order on pressing the [MODE] key.

Current display mode is displayed at the upper left of the display.

H UPRM C UPRM C UPTM N UPRM N UPTM

For H UP (Head up mode)

Heading line is always oriented toward the top of the screen.
This mode is based on the bow of the ship and is suitable to monito r targets because targets are seen
as they are in navigating own ship.

Heading

07

0

0

6

0

N

Target 1

Land

0
0
0

Target 2

The heading line to the top of the screen can be also changed from ship’s bearing.

Refer to “H UP OFFSET” (page4-4).

For H UP (Head up mode)

0093129012-06 2-23

Chapter 2 Basic operation (Panel) MDC-2900 Series

For C UP (Course up mode)

The course to a waypoint is the heading line at the time of selecting “C UP”, and the specified course is

oriented toward the top of the screen.

This mode is used to navigate along the specified course.

It easily shows any deviance of own ship from the specified course.

Specified course

0

0

0

0

8

0

0

9

0

Heading

N

Target 1

Land

0

0

7

6

0

0

Heading

N

0

0

0

Target 1

Target 2 Target 2

Land

< [C UP] selected >

< Heading deviated from course >

For N UP (North up mode)

This mode always keeps true north at the top of the screen.

A north oriented representation makes it easy to correlated with a chart.

N

000

Target 1

Land

Heading

Target 2

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MDC-2900 Series Chapter 2 Basic operation (Panel)

For relative motion (RM) and true motion (TM)

Relative motion fixes your antenna position at the center of the display, and the targets that surround
your antenna position move.
Your antenna position is displayed at the center. So, while the ship is steaming, the fixed targets such
as the land also continue to move.
In the true motion, the antenna position moves on the screen based on the own ship’s direction and
speed.
As a result, the not moving targets stay fixed on the display, and all the moving targets move on the
display.
* The heading always continues to move. So, no true motion [TM] is available for [H UP].

Relative motion (RM)

Antenna
position

Land

True motion (TM)

: The antenna position on the screen moves according to its speed and tidal current.

Stationary targets are fixed on the display. This mode is useful to monitor your
position with respect to the fixed targets such as land.

Antenna
position

: The antenna position is fixed and the other surrounding targets move on the

display.
This is useful for monitor the surrounding situation with respect to own ship’s
position.

Fixed

Moving

Moving

Moving

Land

Moving

Fixed

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Chapter 2 Basic operation (Panel) MDC-2900 Series

When own ship moves out of the movable range during the true motion, own ship is reset to the
course over water or to the opposite direction of the course over ground.

Refer to “TM RESET MODE” (page4-2).

34%
66%

Antenna position relocatable area in TM

Antenna position

Reset true motion

Antenna position can be relocated before own ship moves out of antenna position relocatable area in
true motion.

1 Press [MENU] key to display “Menu”.

Select [RADAR] => [TM RESET] and then press [ENT] key.

MAP

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MDC-2900 Series Chapter 2 Basic operation (Panel)

2.16 F (Function key) usage

For quick function access, this radar is provided with six dedicated function keys (“F1”, “F2”, “F3”, “F4”,

“F5” and “F6”). You can switch to a pre-specified function by pushing each key.

1 Press [MENU] key to display “Menu”.

Select [MAINTENANCE] => [STARTUP] => [F1], and then press [ENT] key after selecting the

setup value.

OFF

MAP

ANT HEIGHT

FERRY MODE

COAST CURSOR

NAVLINE CURSOR

ROUTE CURSOR

AREA CORSOR

MAP DELETE

*No numerical value is displayed in function key operation.

** The position of the cursor and own ship’s position are recorded as event markers.

Refer to “EDIT MARK SHAPE” (page4-29) for designation of mark shape.

2 The same procedure as step 1 is applied for [F2], [F3], [F4], [F5] and [F6], by selecting each item

and pressing the [ENT] key.

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Chapter 2 Basic operation (Panel) MDC-2900 Series

[SHORT CUT]: Press F key only once. This function makes it easy to access a menu item that was

previously set up.

1 Select F key to be assigned as short cut key (for example [F1] key).
2 Move to the menu that you want to assign for short cut function.
3 Push a [F1] key by holding a [OFF] key.
4 The setup is complete when beeping the buzzer beeps for two second.
5 Push [F1] key without menu, and then assigned short cut menu will appear immediately.

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MDC-2900 Series Chapter 3 Primary operations (Menu)

Chapter 3 Primary operations (For menu)

3.1 Menu usage

Display and remove menu

Press [MENU] key and “Menu” is indicated at the right of the display.

“Menu” display is removed by pressing the [MENU] key.

Select menu item

1 Press [MENU] key and “Main” menu is shown on the display. Select one of main menu items by

moving the trackball up or down.

2 Move the trackball to the right after selection of the main menu item and the sub menu is shown on

the display.

3 Select a sub menu item by moving the trackball up or down.
4 Move the trackball to the right after selection of the sub menu item and the then the selection of

designated value is shown.

5 Select designated value then press [ENT] key.

*Pay attention that the actual change is not executed until [ENT] key is pressed.

6 Move the trackball to the left to return to the previous menu.

The menu is closed when [MENU] key is pressed.

<Example of menu display>

MAP

* As “Menu” setup value is stored in the non-volatile memory inside the radar. Therefore, no setup

operation is required after power is turned on.

* About the shaded menu:

[INTER SWITCH] in [SYSTEM] menu, and [SECTOR MUTE], [BACKUP], [TX HOUR] and [TOTAL

HOUR] in [MAINTENANCE] menu are not available during transmission, and they are all shaded.

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Chapter 3 Primary operations (Menu) MDC-2900 Series

3.2 STAB MODE

STAB MODE is a function to select speed for movement calculation for True trail, TT (ARPA), Past

position and True motion (TM).

Refer to “Display ship’s trail” (page3-9)
Refer to “Target tracking TT (ARPA)” (page3-24)
Refer to “PAST POSN: Past position” (page3-17)
Refer to “For relativ e m otion (RM) and true motion (TM)” (page2-25)

SEA: Stabilization mode using speed over water.

GND: Stabilization mode using speed over ground.

[STAB MODE] can be changed directly at the upper left of the screen.

When SDME or EPFS is not usable by any reason, it is possible to get the speed over ground by

setting reference target.

Refer to “Reference target acquisition” (page3-26)

SEA (Sea stabilization)

SEA stabilization uses CTW (course through water) and STW (speed through water) referenced to

water. Accordingly course and speed indication at the top right side of the screen becomes CTW/STW.

 STW is relative speed of the ship against water surface in the heading direction.

 Information from SDME (speed and distance measuring equipment) like LOG is inputed by serial

data (VBW or VHW).

 Single axis water log indicated as LOG on the screen cannot detect the effect of leeway.

 When speed information is interrupted for 30 seconds from SDME by any reason or VBW water

status flag is invalid, speed indication becomes XXXX by red symbol.

In this case, speed can be entered manually.

Manual speed input.

1 Press [MENU] key, and [Menu] display is shown on the screen.

Select [MAINTENANCE] => [I / O] => [STW] => [MAN], and then press [ENT] key.

2 Press [MENU] key to erase menu.
3 Move cursor to the window on the right side of STW MAN in the top right side of the screen by the

trackball.

4 Press [ENT] key to get ready for speed entry. Enter speed by trackball.
5 Press [ENT] key to fix the input.

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MDC-2900 Series Chapter 3 Primary operations (Menu)

GND (Ground stabilization)

GND uses COG (course over ground) and SOG (speed over ground) referenced to the ground.

Accordingly course and speed indication at the top right side of the screen becomes COG/SOG.

 SOG is the absolute speed of the ship with reference to the land located in the course direction.

 Two-dimensional GND SDME device like dual axis LOG and EPFS (electronic position fixing

system) give the information for serial input.

 If both serial sentence data of VTG (EPFS) and VBW (SDME) are available, then VBW is given

priority.

 If the failure of EPFS or SDME interrupts the speed information for 30 seconds or if the ground

status flag or VTG indicator flag is invalid, then the numeral indication of COG/SOG becomes

XXXX by red symbol.

 If SDME or EPFS is not usable by breakdown or any reason, then COG/SOG can be obtained by

setting Reference target.

Refer to “Reference target acquisition” (page3-26)

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Chapter 3 Primary operations (Menu) MDC-2900 Series

3.3 Radar signal correlation (PROCESS)

There are 3 signal processes; PROCESS 1, PROSCESS 2 and PROCESS 3. The signal processing

consists of residual images processing and signal average processing to eliminate such clutter as sea

surface or rain reflection.

For normal functioning of the signal processing, external signals of ship’s bearing and speed are

required.

Signal process 1 is effective for detecting the ships moving at a speed higher than 15 kn.

Signal process 2 is effective for detecting the ships moving at a speed lower than 15 kn.

Signal process 3 is highly effective to detect buoys such as course indicators and floats. However,

moving ships may disappear.

1 Move the cursor to set value window of [PROCESS] at the upper right part of the screen.

Press [ENT] key repeatedly until the desired value appears.

2 Turn the [SEA] and [RAIN] knobs to adjust the clutter to a dark level not to get in the way of

detecting targets.

• PROCESS 1:

This is the process to get stable display of targets per every rotation of an antenna. It is effective to

detect moving ships at high speed.

Rotation of

antenna

Input signal

Signal

amplitude

st

rotation 2nd rotation 3rd rotation

1

Target

Target

th

4

rotation

Clutter

th

rotation 6th rotation 7th rotation

5

Clutter

PROCESS 1

Signal

amplitude

PROCESS 1 is the processing characterized by residual image effect and has also depressing effect

on clutter as compared with input signal.

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MDC-2900 Series Chapter 3 Primary operations (Menu)

• PROCESS 2:

This is to average images of 3 rotations of an antenna. It is effective to detect ships moving at a

speed lower than 15 kn.

Rotation of

antenna

st

1

rotation 2nd rotation 3rd rotation 4th rotation 5th rotation 6th rotation 7th rotation

Target

Input signal

Clutter

Signal
amplitude

Target

Clutter

PROCESS 2

Signal
amplitude

PROCESS 2 is the combination of average processing and residual effect. It has improved

identification capability of targets and clutter as compared with PEOCESS 1.

• PROCESS 3:

In this process, images of 6 rotations of an antenna will be averaged. It is effective to detect course

indicators and floats in the waves.

Rotation of
antenna

st

1

rotation 2nd rotation 3rd rotation 4th rotation 5th rotation 6th rotation 7th rotation

Ta rget

Clutter

Input signal

Signal

amplitude

Target

Clutter

PROCESS 3

Signal

amplitude

PROCESS 3 is average processing. It has improved identification capability of targets and clutter as

compared with PROCESS 2. However, moving targets may be displayed weakly.

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Chapter 3 Primary operations (Menu) MDC-2900 Series

3.4 Enhance target (ENH)

This is the function to enlarge an image in the direction of distance/bearing.

Small ships and remote targets can be enlarged to be easily visible.

[ENH] can be changed directly at the upper light of the screen.

1 Move the cursor to set value window of [ENH] at the upper right part of the screen.

Press [ENT] key repeatedly until the desired value appears.

• The setting value can be selected from “OFF, 1, 2 and 3” and the larger value applies stronger

enhance effect.

ENH: 1ENH: OFF ENH: 2 ENH: 3

*The enlargement of targets has effect on all echoes. So, a large target such as land is also enlarged.

Consequently, land and a small target may be sometimes seen as a single target. Pay attention to that.

ENH: OFF ENH: 3

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MDC-2900 Series Chapter 3 Primary operations (Menu)

3.5 Interference rejection (IR)

This feature is used to reject radar interference from other radars.

Radar transmissions in the same frequency band can cause interference noise on the display

depending on its transmitted power. This noise pattern appearance varies case by case, but is usually

spiral in shape or like the spokes of a wheel in shape.

This equipment can reduce this phenomenon.

[IR] can be changed directly at the upper light of the screen.

[IR] is also effective to reduce second time echo phenomenon.

1 Move the cursor to set value window of [IR] at the upper right part of the screen.

Press [ENT] key repeatedly until desired value appears.

• The setting value can be selected from “OFF, 1, 2, 3, 4, 5” and the larger value applies stronger

interference rejection effect.

• Note: Too much removal effect may also remove small targets. Pay attention to that.

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Chapter 3 Primary operations (Menu) MDC-2900 Series

3.6 Video mode (VIDEO)

This is a function to change the relation between the strength of signal of target echo and their display

gradation.

At [VIDEO 0], the difference of signals strength between dark images and bright images becomes

larger. As the numerical figure becomes larger as [VIDEO 1], [VIDEO 2] and [VIDEO 3], the difference

in signal strength becomes smaller.

At [VIDEO 4], the difference of signal strength becomes gradually smaller in the range at close to 5 NM

and becomes constant at 5 NM or higher. When the difference of signal strength is large, it will be easy

to display clutter at darker level and targets at brighter level.

[VIDEO] can be changed directly at the upper light of the screen.

1 Move the cursor to the setup value window of [VIDEO] at the upper right part of the screen.

Press [ENT] key repeatedly until desired value appears.

When the difference of signal strength is small, images becomes sharper.

However, signal strength from small ships and buoys is weak, and the difference between clutter and

them is not large enough.

Therefore, it is necessary to display the clutter not to get in the way and not to overlook small ships and

course buoys. Therefore, it is recommended to use [VIDEO 1] or [VIDEO 4].

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MDC-2900 Series Chapter 3 Primary operations (Menu)

3.7 Display ship’s trail

Displaying the target ship’s trail is done as follows.

Two types of display mode, relative display (REL) and true display (TRUE) are available.

At the start of test, “TRAIL” characters at lower left of the screen change to yellow.

* The trail by its nature records and displays past images. The trail does not display an image just after

being transmitted.

In addition, after the change of [TIME], or after the change of two or more steps of [RANGE], the trail

does not display an image, because the record is reset (erased).

* The trail can be changed directly at the lower left of the screen, with trackball and [ENT] key, without

using menu function.

1 Press [MENU] key, and [Menu] display is shown on the screen.

Select [RADAR] => [TRUE / REL], and then press [ENT] key after selecting the setup value.

MAP

* [TRUE/REL] is in common with [PAST POSN]. So, if you change one part, the other part will

change accordingly.

Refer to page3-17

2 There are additional set up items, [TIME], [SHAPE], [DETECT LEVEL] and [RESET].

[TIME]: This is to set up the time of the trail to be displayed by setting the time up to how many

minutes before from now.

[SHAPE]: Three types of shapes, [CATERPILLAR], [TADPOLE] and [FIREBALL] as shown below.

[DETECT LEVEL]: This is to set up echo level of trail to be recorded.

[RESET]: Erase current record and display of trail and then start new record and display of trail.

For setting of trails, [RANGE KEEP], [C UP KEEP], [MODE KEEP], [MOVE] are also available.

Refer to “TRAIL” (page4-3).

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Chapter 3 Primary operations (Menu) MDC-2900 Series

Relative display (R)

The target trail is displayed as result of sum of vector (course and speed) of the target ship and your
ship. When your ship is on the projected course of this trail, it shows that a collision may occur in future.
This display is useful to help detect a dangerous situation.

< Display mode[N UP

NN

Target 1

RM] >

Two ships on a
collision course

Antenna
position

TRAIL
REL

Course and speed of a real ship Ships relative trails

Target 2

TRAIL
REL

Target 1, whose trail is overlapping the EBL, is a dangerous target while the Target 2 is not. If trail
setting is six minutes, and if the trail length is equal to the distance between the antenna position and
Target 1, then the collision will occur after six minutes.

RM] >

6min

Target 1

Antenna
position

< Display mode[N UP

N

TRAIL
REL

6min

Prospect of collision after 6min

True display (T)

This mode displays the trail of the moving target over a specified time interval independently from own
ship's movement.
This mode is used to monitor the bearing and speed of the target.
No trails of fixed targets such as land are drawn on the display.

The amount of movement of all ships, own ship, Target 1 and Target 2 are drawn as trails.
The land does not move, so its trail is not drawn.

RM] >

Target 2

Land

Time passes

TRAIL
T

Target 1

Antenna
position

< Display mode[N UP

NN

TRAIL
T

Course and speed of a real ship Trail after the time has passed

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MDC-2900 Series Chapter 3 Primary operations (Menu)

3.8 Display range rings (RR)

The range rings (RR) are markers displayed at the specified distance from reference point.

Refer to “Setup own ship profile” (page1-5) to setup reference point.

It is used as a rough indication of the distance from a target.

Range

Ring separation

RR 1 NM

Range rings

Range 6NM

Own
ship

Ring separation 1NM

1 Press [MENU] key to display “menu”.

Select [TOOL] => [RR] => [ON], and then press [ENT] key.

MAP

*[RR] display can be changed directly in the upper left of the screen, with trackball and [ENT] key,

without using menu function.

*0° of the range rings indicates North direction when [BRG TRUE / REL] is TRUE while heading

direction when [BRG TRUE / REL] is REL.

Refer to “Bearing mode set up ” (page3-12)

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Chapter 3 Primary operations (Menu) MDC-2900 Series

3.9 Bearing mode set up

This menu is used to change the bearing mode in “EBL”( page2-15), “PI”( page2-17),

“ERBL”(

The settings available in the true bearing with the true north as 000 degree, and in the relative bearing

with the heading as 000 degree.

[EBL], [PI], [ERBL], [CURSOR] can be changed directly in the screen.

page2-20), “bearing scale”( page2-6) and “CURSOR”.

1 Display “Menu” by pressing [MENU] key.

Select [TOOL] => [BRG TRUE/REL] => then press [Enter] after selecting the setup value.

MAP

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MDC-2900 Series Chapter 3 Primary operations (Menu)

3.10 Echo alarm

This function is used to monitor hazardous targets such for collision prevention.

*Collision avoidance

It is strongly recommended to maneuver the ship for collision avoidance based on sure and

dependable SOG and COG information.

This is because ship's heading and running speed against water may be different from the actual ship's

movement due to foreign or mostly natural environmental effect such as wind, current, wave etc.

Refer to “COG / SOG” (page4-43)

1 Press [MENU] key to display “Menu”.

Select [ALARM] => [ECHO ALARM] => [EDIT], and then press [ENT] key.

MAP

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Chapter 3 Primary operations (Menu) MDC-2900 Series

2 The items to be selected are [BRG], [RNG], [WIDTH], and [DEPTH].

ECHO ALARM

BRG
WIDTH
RNG
DEPTH

118°

45°
6NM
2NM

[VRM] knob and [EBL] knob are used for setup.

3 Press [EBL1] or [EBL2] key, and then Select an item to be set between [BRG] and [WIDTH] by

using [EBL] knob.

In the same way, press [VRM1] or [VRM2] key, and select an item to be set between [RNG] and

[DEPTH] by using [VRM] knob.

The selected item is shown with a

symbol at the left of numerical indication at the lower left of

the screen.

4 Select [ECHO ALARM] => [ON], and then press [ENT] key.

5 There are additional items, [MODE] and [DETECT LEVEL].

MODE [IN]: When the echo enters a specified zone, an alarm sounds.

[OUT]: When the echo leaves a specified zone, an alarm sounds.

DETECT LEVEL: It designates echo strength to determine an alarm sound. When the level is set

too low, noise may be responded.

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MDC-2900 Series Chapter 3 Primary operations (Menu)

3.11 Target tracking TT (ARPA) / AIS common items

This feature provides auto tracking of the target and will record and display its course and speed as a

vector.

VECTOR

The course and speed are indicated as vector after tracking is established.

Two types of display mode are available: relative display (REL) and true display (TRUE).

REL: This vector adds the course/speed of a target to the course/speed of own ship.

If the vector is directed to the own ship, possibility of collision exists.

It shows danger of collision at a glance and is useful to avoid collision.

TRUE: This vector shows the course/speed of a target only, irrespective of the own ship.

1 Press [MENU] key, and [Menu] display is shown on the screen.

Select [OS/TGT] => [VECT TRUE / REL], and then press [ENT] key after selecting the setup value.

MAP

DETAIL

2 In addition, there are [TIME] and [TIME INCREMENT] setups.

[TIME]: It designates length of vector by time. When [TIME] is specified by 1 min, the vector is

displayed to the position that will be reached in 1 min by present target speed.

[TIME INCREMENT]: This vector displays the division number of time divider. When the setup

value is 2, vector is 1/2 and the parting line is displayed at a half-length

location of vector.

TIME

TIME INCREMENT: 3

* [TRUE / REL] and [TIME] can be changed directly at the upper right of the display screen, with

trackball and [ENT] key, without using menu.

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Chapter 3 Primary operations (Menu) MDC-2900 Series

r

CPA/TCPA

To avoid collision, it sets up LIMIT CPA (closest point of collision) and LIMIT TCPA (time to CPA).

[LIMIT CPA] and [LIMIT TCPA] can be changed directly at the upper right of the screen.

1 Move the cursor to set the value window of [CPA] at the upper right of the screen.

Press [ENT] key and change the setting value with the trackball.

Press [ENT] key to validate after changing the setup value.

2 In addition, [LIMIT TCPA] is used to specify limit by time.

TGT ID

ID can be displayed with TT (ARPA) or AIS target.

[NUMBER] and [LABEL] are used as ID.

Reference number

5

R1

Sarah J

Refer to “Reference target acquisition” (page3-26) about Reference number.

Numbe

Label

1 Press [MENU] key, and [Menu] display is shown on the screen.

Select [OS/TGT] => [TGT ID DISP], and then press [ENT] key after selecting the setup value.

MAP

2 In addition, [ID DISP SIZE] is used to specify display size.

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MDC-2900 Series Chapter 3 Primary operations (Menu)

PAST POSN: Past position

The past position of TT (target tracking) and AIS (activated target) can be displayed.

* The past position by its nature records and displays past positions. Immediate display is impossible

after the start of TT (ARPA) and after the change from AIS sleep target to active target.

In addition, when [TIME] is changed, a record is reset (erased). So, immediate display is impossible.

During “PAST POSN” recording, [PAST POSN BUILD UP] message in yellow characters is displayed in

[TGT INFO] column of mid right of the screen.

1 Move the cursor to set value window of [PAST POSN] upper right part of the screen.

Press [ENT] key to select T or REL.

*As [TRUE/REL] is in common with [TRAIL] (

Refer to page3-9). So, if you change one part,

the other part will change accordingly.

2 In addition, [PAST POSN TIME] item designates recording length.

PAST POSN TIME

1/5

1/5

1/5

1/5

1/5

Up to five record points are available.

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Chapter 3 Primary operations (Menu) MDC-2900 Series

ASSOCIATION

When an AIS target and a tracked target of TT (ARPA) are regarded the same target, it is automatically
associated to a single target.
Select priority of the association with either AIS or TT (ARPA).
If the low-speed ship is associated and displayed with TT priority, then HDG may be unstable. So, the
display with AIS priority is recommendable.

1 Press [MENU] key, and [Menu] display is shown on the screen.

Select [OS/TGT] => [ASSOCIATION] => [ASSOCIATION], and press [ENT] key after selecting the
setup value.

MAP

DETAIL

OFF：Association is turned off.
TT：Symbols of both TT (ARP A) and AIS are associ ated to TT (ARPA). However when the target of
AIS is sleeping target it is not associated.
AIS：Symbols of both TT (ARP A) and AIS are associated to AIS. However when the t arget of AIS is
sleeping target it is not associated.

[ASSOCIATION] can be changed directly at the upper right of the display screen, with trackball
and [ENT] key, without using menu function.

In addition, [CHANGE SELECTED TGT] and [SETTING] are provided.
[ASSOCIATION] changes priority of the association of all targets while [CHANGE SELECTED
TGT] changes priority of the association for selected target only.
[SETTING] designates conditional items of association among RNG, CRS, SPD, SPD LIM and
TIME REPRIEVE.
RNG: It designates the range to determine association.
CRS: It designates the course to determine association.
SPD: It designates the speed difference to determine association.
SPD LIM: It designates the minimum speed to determine association.
TIME REPRIEVE: It designates the judgment time to determine association.

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MDC-2900 Series Chapter 3 Primary operations (Menu)

Setup area

There are several items of setup area related to TT (ARPA) and AIS.

Common items [INPUT RNG], [AUTO ACQ AREA] and [GZ] will be explained here.

[INPUT RNG]

(Designated in distance)

Operation ranges of TT (ARPA) and AIS.

TT (ARPA) and AIS do not function outside the range.

[AUTO ACQ AREA]

(Designated in a fan type range)

TT: When an un-tracked target enters, it is automatically acquired and an alarm sounds.

When a tracked target enters, no alarm sounds.

AIS: When a sleeping target enters, it is changed to an active target (activated) and an alarm sounds.

When an active target enters, no alarm sounds.

[GUARD ZONE]

(Designated in a fan type range)

TT: When a tracked target enters, an alarm sounds.

When an un-tracked target enters, no alarm sounds or it is not automatically acquired.

AIS: When an active target enters, an alarm sounds.

When a sleeping target enters, no alarm sounds.

[FILTER]

(Designated in distance, CPA/TCPA and CLASS)

Sleeping targets are hidden.

[AIS AUTO ACQ]

(Designated in distance and CPA/TCPA)

When a sleeping target enters, it is changed to an active target (activated) and an alarm sounds.

About [FILTER RNG] and [AIS AUTO ACQ], refer to AIS (page3-38).

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Chapter 3 Primary operations (Menu) MDC-2900 Series

INPUT RNG

FILTER RNG

AUTO ACQ AREA (TT, AIS)

GUARD ZONE

AIS AUTO ACQ

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MDC-2900 Series Chapter 3 Primary operations (Menu)

INPUT RNG: Input range

This is to set up the operation range of TT (ARPA) and AIS.
It designates the entire operation range of TT (ARPA) and AIS. So, TT (ARPA) and AIS do not function
outside the range.

1 Press [MENU] key to display “Menu”.

Select [OS/TGT] => [INPUT RNG], and then press [ENT] key after selecting the setup value.

MAP

DETAIL

0093129012-06 3-21

Chapter 3 Primary operations (Menu) MDC-2900 Series

AUTO ACQ AREA: Automatic acquisition area

If an un-tracked TT (ARPA) target enters this area, then the automatic acquisition starts.
If an AIS sleep t arget enters there, then it is automatically changed into an active target.
If a TT (ARPA) tracked target or an AIS active target enters there, then no response occurs.

It takes at least 20 seconds to judge whether the targ et is acquirable by TT (ARPA).
Take note that the target may not be acquired when the setting area is too narro
w or target is moving on high speed.

1 Press [MENU] key to display “Menu”.

Select [OS/TGT] => [AUTO ACQ AREA], => [EDIT], and then press [ENT] key.

MAP

TRIAL MANOEUVRE

2 Setup area.

Refer to “Echo alarm” (page3-13) to set item and setting method.

3 Select [AUTO ACQ AREA], => [ON], and then press [ENT] key.

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MDC-2900 Series Chapter 3 Primary operations (Menu)

GUARD ZONE

This is used to set up a guard zone (guard from danger area).
If a TT (ARPA) tracked target or an AIS active target enters a guard zone, then a large, red symbol is
displayed and [ALARM] is generated.
If a TT (ARPA) un-tracked target or an AIS sleeping target enters there, then no response occurs.

1 Press [MENU] key to display “Menu”.

Select [ALARM] => [GZ] => [EDIT], and then press [ENT] key.

MAP

2 Setup area.

Refer to “Echo alarm” (page3-13) to set item and setting method.

3 Select [GZ] => [ON], and then press [ENT] key.

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Chapter 3 Primary operations (Menu) MDC-2900 Series

3.12 Target tracking TT (ARPA)

It is effective mean for collision avoidance to attach relative vectors to tracked targets.

Refer to “VECTOR” (page3-15)

It is an effective means for collision avoidance to set up CPA/TCPA.

Refer to “CPA/TCPA” (page3-16)

If AIS information is available with tracked targets, association increases tracking accuracy.

Refer to “ASSOCIATION” (page3-18)

Enable TT (ARPA) function

There are two types of method, ON/OFF using menu or ON/OFF using [TT] in the upper right of the

display screen are available.

Pressing [ACQ] key in [OFF] state makes automatically [ON] state.

*This function does not work due to incompleteness of input sentence when own ship information

display in upper right of the screen is turned red.

1 Press [MENU] key to display “Menu”.

Select [OS/TGT] => [TT] => [TT] => [ON], and then press [ENT] key.

TT (ARPA) is effective by using TT in combination with [ASSISTANT DISP].

Refer to “ASSISTANT DISP” (page4-38)

Manual acquisition

1 Move cursor using [Track ball] to lay on the target to be acquired, and then press [ACQ] key. A

symbol is displayed at the cursor location, and acquisition starts.

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MDC-2900 Series Chapter 3 Primary operations (Menu)

Delete target

1 Use [Trackball], drag a cursor to the target to be deleted, keep [OFF] key pressed, and press

[ACQ] key.

Delete all targets

1 Press [MENU] key to display “Menu”.

Select [OS/TGT] => [TT] => [ALL DELETE], and then press [ENT] key.

MAP

TRIAL MANOEUVRE

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Chapter 3 Primary operations (Menu) MDC-2900 Series

Reference target acquisition

If SDME or EPFS is not usable by breakdown or any reason, then COG/SOG can be obtained by

setting Reference target.

By tracking 1 or 2 stationary targets, the true speed/the true course can be used.

This stationary tracked target is called as [Reference target].

A letter “R” denoting reference and number are attached to the lower left of Reference target symbol.

Refer to “TGT ID” (page3-16)

* Reference target can be used only when COG/SOG is not available.

* HDG input is necessary to use a reference target.

* Reference target has considerable error factor caused by target size, backrush and distance.

Accordingly, if COG/SOG is obtained from the reference target, then its accuracy is generally not

good. It is probable to mistake a moving target for a reference target. Therefore, if a reference target

is used, then CPA/TCPA of TT (ARPA), relative vector and relative speed are prohibited by IEC

62388. For this reason, if a reference target is used, its speed and vector should be only informative.

* Pay attention to that, if a reference target is lost, then accuracy of the true speed/the true course is

significantly reduced.

* The combined use with AIS function cannot be performed.

* If the target is lost for 20 seconds, then reference target function judges as lost target. If a lost target

happens, the numeral indication of COG/SOG is indicated by XXXX symbol in red. Then stabilization

mode automatically changes from ground stabilization to water stabilization.

1 Move cursor using [Track ball] to lay on the target to be acquired.
2 Press [MENU] key to display “Menu”.

Select [OS/TGT] => [TT] => [REF ACQ], and then press [ENT] key.

MAP

TRIAL MANOEUVRE

3 When reference target is tracked, [GYRO] and [REF] windows appear in the own ship information

area at appear right side of the screen.

When [REF] is selected, COG/SOG computed by the reference target can be used.

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MDC-2900 Series Chapter 3 Primary operations (Menu)

Types of tracked target symbol

The following symbols are overlapped on target.

*

Symbol

Blink in

0.5 sec. interval

Radar target in acquisition state

Radar target in acquisition state- Automatic acquisition
(Red clolor)

Tracked radar target

Symbol name

**

Tracked radar target

**

Blink in

**

***

**

****

* Pressing [OFF] key to acknowledge changes target symbol to normal color and stop blinking.

** ID can be displayed in Tracked target.

Refer to “TGT ID” (page3-16) about the method to display.

*** Alarm display and alarm sound disappear by pressing [OFF] key to acknowledge, while color is

remains red until the target leaves outside of setting range or tracking is stopped.

0.5 sec. interval

Blink in

0.5 sec. interval

(Displayed at indicating numerical value.)

Tracked radar targets - dangerous target
(Red clolor)

Lost target
(Red clolor)

**** The lost target display disappears automatically when [OFF] key is pressed to acknowledge or

when 10 seconds have passed.

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Chapter 3 Primary operations (Menu) MDC-2900 Series

TEST TGT

Two kind of test are provided.

One is check of TT (ARPA) performance and the other is check of functions.

* For TEST TGT execution, ANT connection and input of own-ship position are required.

*Time input (ZDA, DTM) is not necessary, but without time input, an alarm will activate periodically.

TT (ARPA) performance check.

Confirm that the acquisition and track of target is possible, and that the accuracy of data is within the

specification mentioned below.

Time of steady state

minutes

1 min: trend 1.0 – – –

3 min: prediction 0.3 0.5 5

 Preparation

CPA

NM

TCPA

minutes

True course

Degrees

(°)

1 Display [Range rings] as follows:

Press [MENU] key to display “Menu”.

Select [TOOL] => [RR] => [ON], and then press [ENT] key.

Refer to “Display range rings (RR)” (page3-11).

Range ringsRinge separation

12NM

2 NM

True speed

0.5 kn or 1 %

(whichever is greater)

2 Turn GAIN, RAIN and SEA knobs to maximum counter clockwise position.

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MDC-2900 Series Chapter 3 Primary operations (Menu)

 TEST TGT ON

By turning TEST TGT [ON], a large character [S] is displayed at the lower middle of the screen center.

A small character [x] is displayed in Target position.

Turn on TEST TGT, press [STBY / TX] key, and start transmission. Then, a target appears.

A target appears near the direction 10° and range 12 NM. After approaching to own ship, the target

moves toward direction 170°.

Own ship's speed is about 40 kn and the target speed is about 60 kn (Relative speed is 100 kn).

Target

x

S

1 Turn ON TEST TGT.

Select [OS/TGT] => [TT] => [TEST TGT] => [ON], and then press [ENT] key.

Range is fixed at 12 NM and cannot be changed.

2 Press [STBY/TX] key to start transmission.

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Chapter 3 Primary operations (Menu) MDC-2900 Series

 Start ACQ

1 After the center of the target reaches to 10NM (the second ring from outside), use a trackball, drag

a cursor to the target and press [ACQ] key.

2 Confirm appearance of the dotted circle of acquisition start symbol and the parenthesis of value

near it.

The value is indicated in [TGT INFO] area.

Refer to “Types of tracked target symbol” (page3-27)

TGT INFO area

*If the parenthesis is not displayed, then drag a cursor to the acquisition start symbol and press

[ENT] key.

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MDC-2900 Series Chapter 3 Primary operations (Menu)

 Compare it with the known result.

1 Tracking starts 30 seconds after the start of acquisition

Confirm that the target has the tracking symbol.

Confirm that the symbol number is [1].

Refer to “Types of tracked target symbol” (page3-27)

*If the number is not correct, then no comparison with the known result is made. Delete the symbol

and start it over.

2 Compare with the known result after 1 minute from acquisition start.

Known solution

BRG T 11.0 °

RNG 8.3 NM

CTW 199.7 °

STW 54.0 kn

CPA 0.00 NM

TCPA 5.25 Min

3 Compare with the known result after 3 minutes from acquisition start.

Known solution

BRG T 11.0 °

RNG 5.1 NM

CTW 199.5 °

STW 55.0 kn

CPA 0.00 NM

TCPA 3.20 Min

*If difference from the known result exceeds the limit, then the following warning is indicated.

BRG T, RNG, T CRS, T SPD, CPA and TCPA

 TEST TGT OFF

Select [OS/TGT] => [TT] => [TEST TGT] => [OFF], and then press [ENT] key.

Stop transmission and restore GAIN, RAIN, and SEA setting value of knobs to the original value.

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Chapter 3 Primary operations (Menu) MDC-2900 Series

A

Function check

This function is used to confirm the operation of Echo alarm, Manual acquisition TT (ARPA), Auto

acquisition, Past position and Guard zone.

 Preparation

1 Set up the range to 12NM.
2 Turn GAIN, RAIN and SEA knobs to minimum.
3 Set up the echo alarm as follows:

Press [MENU] key to display “Menu”.

Select [ALARM] => [ECHO ALARM] => [EDIT], and press [ENT] key.

Set up the echo alarm range.

Refer to “Echo alarm” (page3-13) to set up the range.

Select [ECHO ALARM] => [ON], and then press [ENT] key.

4 Set up the guard zone.

Select [ALARM] => [GZ] => [EDIT], and press [ENT] key.

Set up the range of Guard zone.

[GZ] => [ON], and then press [ENT] key.

5 Set up the Auto acquisition.

Select [OS/TGT] => [AUTO ACQ AREA] => [AUTO ACQ AREA] => [EDIT], and press [ENT] key.

Set up the range of Auto acquisition.

Select [AUTO ACQ AREA] => [ON], and press [ENT] key.

ECHO

12NM

LARM

AUTO ACQ AREA (TT, AIS)GUARD ZONE

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 TEST TGT ON

By turning TEST TGT [ON], a large character [S] is displayed at the lower middle of the screen center.

A small character [x] is displayed in Target position.

Turn on TEST TGT, press [STBY / TX] key, and start transmission. Then, a target appears.

Target appears near the direction 10° and range 12NM. After approaching to own ship, the target

moves toward direction 170°.

Own ship speed is about 40kn and target speed is about 60kn (relative speed is 100kn).

Target

12NM

x

S

1 Turn on TEST TGT.

Select [OS/TGT] => [TT] => [TEST TGT] => [ON], and then press [ENT] key.

Range is fixed at 12 NM and cannot be changed.

2 Press [STBY / TX] key to start transmission.

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Chapter 3 Primary operations (Menu) MDC-2900 Series

 Echo alarm

Refer to “Echo alarm” (page3-13)

1 Confirm that when the target enters the echo alarm area, the echo alarm is displayed in alarm

display area at the lower right of the screen

Press [OFF] key to acknowledge. Then, alarm will disappear.

x

Alarm display area

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 Manual acquisition TT (ARPA)

Refer to “Target tracking TT (ARP A)” (page3-24)

1 Use a trackball, drag a cursor to the target and press [ACQ] key.

x

2 Symbol will be displayed by acquisition.

Refer to “Types of tracked target symbol” (page3-27)

Information of symbol with

CPA/TCPA are displayed as [missing] until tracking is started.

Move the cursor on symbol and then press [ENT] key if

is displayed in the TGT INFO area.

is not displayed yet.

TGT INFO area

3 Confirm that data is changed from [missing] after the symbol is changed to tracked one.
4 Move the cursor again.

Delete the tracked symbol by pressing [ACQ] key while keeping [OFF] key pressed.

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Chapter 3 Primary operations (Menu) MDC-2900 Series

 Auto acquisition

Refer to “AUT O ACQ AREA: Automatic acquisition area” (page3-22)

1 If a target enters the Auto acquisition area and 15 seconds pass, then automatic acquisition starts.

Start of tracking is displayed in the alarm display area at lower right of the screen.

Acquired symbol is shown in blinking red until pressing [OFF] key is pressed to acknowledge.

Alarm display area

 Past position

Refer to “PAST POSN: Past position” (page3-17)

1 Trail of tracked symbol is displayed by setting past position time.

Set up the past position time in the “PAST POSN” at the right middle of the screen.

PAST POSN 3min

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 Guard zone

Refer to “GUARD ZONE” (page3-23)

1 Confirm that the Guard zone alarm is displayed in the alarm display area at the lower right of the

screen when the tracked symbol has entered the Guard zone.

Blinking of tracked symbol will stop by pressing [OFF] key to acknowledge.

Tracked symbol remains red until it leaves from Guard zone.

Alarm display area

 TEST TGT OFF

Select [OS/TGT] => [TT] => [TEST TGT] => [OFF], and then press [ENT] key.

Stop transmission and restore GAIN, RAIN, and SEA setting value to original knob position.

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Chapter 3 Primary operations (Menu) MDC-2900 Series

3.13 AIS

 The AIS communicates with other ships via VHF (Very High Frequency) radio by transmitting your

ship information and by receiving other ships information.

 Only AIS data with WGS84 datum is accepted.

If AIS data has no datum or if datum is other than WGS84, then the warning of [AIS datum is not

WGS84] appears. AIS data is not displayed.

 Capable of displaying up to 254 other ship symbols/IDs. (The 225th is own ship's AIS symbol.)

 If the displayed targets exceed 251, then the warning is displayed at the lower right of the screen.

AIS target count number at the upper right of the screen changes to yellow.

 If the displayed targets exceed 254, then the alarm is displayed at the lower right of the screen. AIS

target count number at upper right of the screen changes to red.

In that case, change [INPUT RNG] value and decease the displayed targets.

Refer to “INPUT RNG: Input range” (page3-21)

* If the displayed targets exceed 254, then next coming AIS data cannot be displayed. For the sake of

safety, if warning is displayed, then change [INPUT RNG] value immediately and decrease the

displayed targets.

* If the own ship information display at upper right of the screen is turned red, then it means that the

input sentence is incomplete. So, this function does not work.

If AIS is used in combination with [ASSISTANT DISP], then AIS is effective.

Refer to “ASSISTANT DISP” (page4-38)

Enable AIS function

There are two types of method. One is [ON/OFF] using menu. The other is [ON/OFF] of [AIS] at the

upper right of the screen.

1 Press [MENU] key to display “Menu”.

Select [OS/TGT] => [AIS] => [AIS] => [ON], and then press [ENT] key.

Setup operation area

This is used to change the area where symbols are to be displayed.

The setting area is determined by radius centered from the reference point.

Refer to “INPUT RNG: Input range” (page3-21)

Caution, the number of AIS symbols can not exceed 254. If the number exceeds 254, it causes a

[Overflow] message on the screen and triggers an alarm sound, and the capability of AIS symbol

display is lost.

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ACTIVE / SLEEP

[ACTIVE/SLEEP] status of target can be switched by using a trackball, dragging a cursor to the desired

target and then pressing [ENT] key.

FILTER [Sleep targets only]

When there are many AIS targets, the screen may become unclear. In that case, by setting filters, it is

possible to hide unnecessary sleeping targets or to display the necessary targets only, and then the

clear view of the target can be acquired.

* The filter is absolutely used to limit display. When input is to be limited, [INPUT RNG] shall be

operated.

Refer to “INPUT RNG: Input range” (page3-21)

Only target within specified [CPA/TCPA] is displayed.

FILTER

1 Use a trackball and drag a cursor to [FILTER CPA/TCPA] at the upper right part of the screen.

Press [ENT] key to get ON.

Refer to “CPA/TCPA” (page3-16) to setup [CPA/TCPA].

The set items to be changed on the screen are [Range] and [Class].

RNG: It displays targets only within specified range.

*Pay attention that the objective target may not be displayed if the setup value is too small.

CLASS: It displays targets only in setup class.

In addition, [MOORED], [AT ANCHOR], [SPD], [GZ] and [ECHO ALARM] are settable on the menu.

Refer to “AIS FILTER” (page4-18) to setup [CPA/TCPA].

AIS AUTO ACQ

This function automatically changes sleep target to the larger activated target (hazardous target).

It is essentially the same function as [AUTO ACQ AREA].

Even if an active target enters, no response occurs.

Refer to “AUT O ACQ AREA: Automatic acquisition area” (page3-22) for [AUTO ACQ AREA].

When the sleep targets within specified CPA/TCPA value are changed to active targets:

1 Use a trackball and drag a cursor to [AUTO ACQ CPA/TCPA] on the upper right part of the screen.

Press [ENT] key to get ON

Refer to “CPA/TCPA” (page3-16) to setup [CPA/TCPA].

In addition, [RNG] is used to activate the targets within designated range.

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Chapter 3 Primary operations (Menu) MDC-2900 Series

Types of AIS target symbol

The following symbols are overlapped on target.

Symbol Symbol name

Sleeping target

Sleeping target without HDG.

Sleeping target with neither reported HDG
nor COG.

*

Activated target

*

*
*

Activated target without HDG.
Activated target with neither reported HDG

nor COG.
Activated target - true scaled outlines

*

Activated target - dangerous targets

*
*

*

Blink in

0.5 sec. interval
Blink in

0.5 sec. interval
Blink in

0.5 sec. interval

Activated target without HDG.
Activated target with neither reported HDG

nor COG.
Activated target with heading lines

*

Activated target with turn indicators

*

Real AIS ATON

VirtualAIS ATON

SART (AIS SearchAnd Rescue Transponder)

*ID can be displayed with Activated target.

Refer to” TGT ID (page3-16) about a method to display.

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3.14 Trial manoeuvre

In case it is suspected the own ship could collide with tracked targets or activated AIS targets, this
function provides such reference information as the actual anti-collision manoeuvre can be taken. This
function is to display the simulation result in the form of graphic vector on the radar screen, on the
assumption that the own ship travels with the current course and speed.

Assuming that the own ship and other ships (tracked targets and activated AIS targets) are both
concurrently moving at the present course and speed [CRS·SPD] for the duration set at [DELAY],
vector is displayed in such a way that the own ship is to move at the set [CRS T], [SPD], [RAT E OF
TURN] and [RATE OF SPD] from the starting point.

* Better information is provided by using relative motion and sea stabilization (water tracking).
* The function is terminated once the HDG input, SPD input, LAT/LON input (AIS only) are disrupted, as

tracked targets and activated AIS targets are used.

1 Press [MENU] key to display “Menu”.

Select [OS/TGT] => [TRIAL MANOEUVRE] => [GO], and then press [ENT] key.

MAP

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