Koden MDC-7060, MDC-7010, MDC-7020, MDC-7920, MDC-7960 Operation Manual

MDC-7000/7900 Series Revision History

No.

Doc. No.- Rev. No.

Date Revised

(Y/M/D)

Revised Content

0

0093169010-00

2016/07/13

First edition

1

0093169010-01

2016/09/07

Chapter 11

2

0093169010-02

2016/10/14

In case no Heading and Speed signals, Introduction,
Chapter 2, Chapter 3, Chapter 4, Chapter 6, Chapter
9, Chapter 10, Chapter 11

3

0093169010-03

2016/12/12

Chapter 1, Chapter 2, Chapter 6, Chapter 7, Chapter
11

4

0093169010-04

2017/02/09

Chapter 6, Chapter 7, Chapter 11

5

0093169010-05

2017/04/18

Chapter 2, Chapter 7, Chapter 9

6

0093169010-06

2017/05/11

For Your Safe Operation, Chapter 6

7

0093169010-07

2017/06/28

Chapter 6, Chapter 11

8

0093169010-08

2017/09/25

Configuration items

9

0093169010-09

2018/03/06

Configuration items, Chapter 11

10

0093169010-10

2018/03/13

MDC-7000/7900 OC Series→MDC-7000/7900 Series,
Chapter 2, Chapter 10

MDC-7000/7900 Series Operation Manual

Doc No: 0093169010

Document Revision History

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.

© 2016-2018 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.

0093169010-10 i

Important Notice MDC-7000/7900 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 0093169010-10

MDC-7000/7900 Series For Your Safe Operation

Symbol

Meaning

Warning Symbol

This symbol denotes that there is a risk of death or serious injury when not
dealt with it correctly.

High Voltage Danger Symbol

This symbol denotes that there is a risk of death or serious injury caused
by electric shock when not dealt with it correctly.

Caution Symbol

This symbol denotes that there is a risk of slight injury or damage of device
when not dealt with it correctly.

Prohibition Symbol

This symbol denotes restriction of the specified conduct. Description of the
restriction is displayed near the mark.

IMPORTANT

Important Symbol

This mark indicates important area where attention is needed. This may
include possible data lose or other issues that may interfere with radar
operation.

Reference Symbol

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

For Your Safe Operation

Symbols used in this Operation Manual

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

0093169010-10 iii

For Your Safe Operation MDC-7000/7900 Series

Caution, high voltage inside.

High voltage that may cause severe injury or death is present. High
voltage remains in circuit even after power is turned off. High voltage
circuit has a protective cover with a warning label. Make sure to turn off
power and discharge capacitors before working on the system. Only
authorized personnel should access this circuit for repair and
maintenance.

Confirm main power is turned off before servicing the
equipment.

If power switch is turned on while working on the system, possible
severe injury or death may occur due to high voltage. Make sure main
power is off and a label “Work In Progress” is attached to the breaker
powering the system.

Caution related to 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.

When choosing equipment location

Do not install the equipment where it is excessively damp, humid and
under direct dripping water.

Caution related to static electricity

Static electricity may be generated from floor carpet or synthetic clothes.
Static may destroy some electronics parts of the circuit and therefore
anti-static measures should be done.

Prohibited matter

Any Display and Scanner unit combination other than specified in the
manual is prohibited and will void manufacturer’s warranty.

Caution related to Equipment

iv 0093169010-10

MDC-7000/7900 Series For Your Safe Operation

Caution related to rotating aerial

The radar antenna may start rotating to rotate without notice. Please stand
clear from the antenna for your safety.

Caution related to electromagnetic disturbance

The operating Antenna & Scanner unit radiates high-energy
electromagnetic wave. It may cause harmful effect for human body due to
its continuous radiation. As International regulation says, electromagnetic
waves less than 100 watt/m2 does not have a harmful effect on human
bodies, but some kind of 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

Transmission power /
Antenna length

100W/m2

50W/m2

10W/m2

MDC-7060
MDC-7960

6kW / 4 feet Antenna

1.5 m

2.1 m

4.5 m

6kW / 6 feet Antenna

1.7 m

2.4 m

5.4 m

MDC-7010
MDC-7910

12kW / 4 feet Antenna

2.1 m

2.9 m

6.4 m

12kW / 6 feet Antenna

2.4 m

3.4 m

7.6 m

12kW / 9 feet Antenna

2.9 m

4.1 m

9.0 m

MDC-7020
MDC-7920

25kW / 4 feet Antenna

2.9 m

4.1 m

9.2 m

25kW / 6 feet Antenna

3.5 m

4.9 m

10.9 m

25kW / 9 feet Antenna

4.1 m

5.8 m

13.0 m

Caution rellated to Handling

0093169010-10 v

For Your Safe Operation MDC-7000/7900 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 related to remaining high voltage.
A high voltage may remain in the capacitor for several minutes after
system is 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 properly rated fuse. If incorrect fuse is used, it may cause fire, smoke
or damage.

vi 0093169010-10

MDC-7000/7900 Series Break in procedure of stored radar

Following procedure is recommended for “Break In” of the stored radar.
Otherwise the radar sometimes exhibits unstable transmitting operation
such as arcing at its initial operation after long period of storage and make
the operation more difficult.

1. Extend preheat time as long as possible (preferably 20 to 30
minutes).

2. Set the pulse width to the shortest one and start the operation.
When the operation in the shortest pulse is stable then go to
operation in longer pulse and repeat the similar step until the
operation reaches to the final pulse condition.

Break in procedure of stored radar

0093169010-10 vii

Used battery and radar disposal MDC-7000/7900 Series

A high-energy density lithium ion battery is installed in this radar.
Improper disposal of a lithium ion battery is discouraged as the battery
has a possibility of short-circuiting. If it gets wet, the generation of heat,
explosion or ignition may occur resulting in an injury or fire.

Used battery and radar disposal

Treatment of the used lithium ion battery

To dispose of built-in lithium ion battery (CR2032) in this radar, insulate each terminal with tape, and
wrap in plastic bag.
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.

viii 0093169010-10

MDC-7000/7900 Series In case no Heading and Speed signals

In case no Heading and Speed signals are input from navigation
equipment

When no Heading and Speed signals are input from navigation equipment (in case not connected), this
radar gives alarms and warning messages at lower right of the display, if the radar is started up factory
default settings.
These alarms are disengaged by pressing OFF key temporarily, however, the alarms are activated
again next time the radar is start up.
Disengage the alarm detection function on start up by the following. Once set, the alarm is not detected
next time the radar is started up.

Press MENU key to display “Menu”.
Select [ALARM] => [ALARM ON/OFF] => [I/O] => [HDG INPUT] => [OFF], and press ENT key.
Select [ALARM] => [ALARM ON/OFF] => [I/O] => [SPD INPUT] => [OFF], and press ENT key.
Select [ALARM] => [ALARM ON/OFF] => [I/O] => [LAT/LON INPUT] => [OFF], and press ENT key.
Select [MAINTENANCE] => [I/O] => [TIME] => [TIME] => [CLOCK], and press ENT key.

0093169010-10 ix

Contents MDC-7000/7900 Series

Contents

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

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

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

Break in procedure of stored radar ......................................................................................... vii

Used battery and radar disposal ............................................................................................ viii

In case no Heading and Speed signals are input from navigation equipment ......................... ix

Contents ................................................................................................................................... x

Introduction ........................................................................................................................... xviii

Configuration items ................................................................................................................ xix

System configuration ................................................................................................. xix

Option list .................................................................................................................... xx

Chapter 1 Display and Operation ............................................................................. 1-1

1.1 Radar Display ............................................................................................................ 1-1

Upper left corner ....................................................................................................... 1-1

Upper right corner..................................................................................................... 1-2

Lower left corner ....................................................................................................... 1-2

Lower right corner..................................................................................................... 1-2

Own ship data ........................................................................................................... 1-3

Target status ............................................................................................................. 1-3

Target and MAP information area ............................................................................. 1-4

Assistant display (Navigation information) ............................................................... 1-5

Alarm display area .................................................................................................... 1-6

Alarm display area (Navigation graph) ..................................................................... 1-8

Alarm status .............................................................................................................. 1-8

1.2 Operation Unit ........................................................................................................... 1-9

1.3 Menu usage ............................................................................................................. 1-11

Turn MENU on and off ............................................................................................ 1-11

Select menu item .................................................................................................... 1-11

1.4 Cursor Access usage .............................................................................................. 1-12

Chapter 2 Radar Basic Operation ............................................................................ 2-1

2.1 Power ON/OFF .......................................................................................................... 2-1

Power ON ................................................................................................................. 2-1

Power OFF ............................................................................................................... 2-1

2.2 Change Brilliance ...................................................................................................... 2-2

Display Brilliance ...................................................................................................... 2-2

Operation unit Brilliance ........................................................................................... 2-2

2.3 Transmission ............................................................................................................. 2-3

x 0093169010-10

MDC-7000/7900 Series Contents

Transmission ON ...................................................................................................... 2-3

Transmission OFF .................................................................................................... 2-3

2.4 Tuning method .......................................................................................................... 2-4

Change MAN (manual) and AUTO........................................................................... 2-4

Optimized value setup method ................................................................................ 2-4

2.5 Change range scale .................................................................................................. 2-5

Change range unit (NM / km / sm / kf / ky) .............................................................. 2-5

2.6 Adjust receiver gain (GAIN) ...................................................................................... 2-6

Selection of MAN GAIN and AUTO GAIN ................................................................ 2-6

AUTO adjustment of GAIN ....................................................................................... 2-6

MAN adjustment of GAIN ......................................................................................... 2-7

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

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

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

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

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

Changing method of CFAR and MAN .................................................................... 2-11

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

RAIN MAN (manual) adjustment ............................................................................ 2-12

2.9 Change transmission pulse width (SP/LP) ............................................................. 2-13

2.10 Select Display Mode ............................................................................................... 2-14

For H UP (Head up mode) ..................................................................................... 2-14

For C UP (Course up mode) .................................................................................. 2-15

For N UP (North up mode) ..................................................................................... 2-16

For relative motion (RM) and true motion (TM) ...................................................... 2-17

Reset true motion ................................................................................................... 2-18

2.11 Ground and Sea stabilization .................................................................................. 2-19

SEA (Sea stabilization) ........................................................................................... 2-19

GND (Ground stabilization) .................................................................................... 2-20

2.12 Measurement of distance by RR and VRM ............................................................ 2-21

Display Range Rings (RR) ..................................................................................... 2-21

Measurement Range (VRM: Variable Range Marker) ........................................... 2-22

Measurement Range (Cursor) ............................................................................... 2-22

2.13 Measurement of bearing by EBL ............................................................................ 2-23

Using the EBL/VRM OFFSET ................................................................................ 2-24

2.14 Bearing mode set up ............................................................................................... 2-25

2.15 Measurement of distance/bearing by PI ................................................................. 2-26

CURSOR mode ...................................................................................................... 2-26

LINE mode ............................................................................................................. 2-27

0093169010-10 xi

Contents MDC-7000/7900 Series

2.16 Measurement distance/bearing by ERBL ................................................................ 2-30

Change ERBL mark to LINE or RING .................................................................... 2-31

Change ERBL offset method .................................................................................. 2-31

2.17 Change color and brightness (Day/Night) ............................................................... 2-32

Setup color ............................................................................................................. 2-32

Setup USER1 and USER2 color ............................................................................ 2-33

Setup brightness ..................................................................................................... 2-34

Color and brightness settings reset ........................................................................ 2-34

2.18 Remove the heading line/navigation data ............................................................... 2-35

2.19 Target trail ................................................................................................................ 2-35

Relative display (R) ................................................................................................ 2-37

True display (T)....................................................................................................... 2-37

2.20 Off Center ................................................................................................................ 2-38

2.21 Function key usage ................................................................................................. 2-39

2.22 Set picture mode ..................................................................................................... 2-40

2.23 Echo process ........................................................................................................... 2-41

Correlation image echo process ............................................................................. 2-41

2.24 Echo expansion ....................................................................................................... 2-42

2.25 Interference rejection (IR) ....................................................................................... 2-43

2.26 Video contrast ......................................................................................................... 2-43

2.27 Noise rejection ......................................................................................................... 2-44

2.28 Echo color rejection ................................................................................................. 2-44

2.29 Pulse width .............................................................................................................. 2-45

2.30 Receiving Radar Beacons, SART and Radar Enhancer ......................................... 2-46

2.31 Inter-switch .............................................................................................................. 2-48

2.32 Cursor data .............................................................................................................. 2-50

CURSOR setting menu .......................................................................................... 2-50

2.33 Reference position and Display center ................................................................... 2-51

Reference position.................................................................................................. 2-51

Display center ......................................................................................................... 2-51

Antenna position mark ON or OFF ......................................................................... 2-52

2.34 Setup own ship outline ............................................................................................ 2-53

Setup CCRP number and ship outline ................................................................... 2-53

2.35 FERRY MODE......................................................................................................... 2-54

2.36 Display setup ........................................................................................................... 2-55

2.36.1 ALL PPI mode .............................................................................................. 2-55

2.36.2 ROTATION MARGIN (H UP, C UP) ............................................................. 2-55

2.36.3 ROTATION SPEED ..................................................................................... 2-56

2.36.4 LOCATION INFO ......................................................................................... 2-56

xii 0093169010-10

MDC-7000/7900 Series Contents

2.36.5 BIRD VIEW ................................................................................................. 2-56

Chapter 3 Alarm ...................................................................................................... 3-1

Collision avoidance .................................................................................................. 3-1

3.1 Echo alarm ................................................................................................................ 3-1

How to set echo alarm area (Fan type) .................................................................... 3-1

3.2 Map area alarm ......................................................................................................... 3-3

How to edit map area ............................................................................................... 3-3

How to move map area ............................................................................................ 3-4

How to add data to map area ................................................................................... 3-5

How to delete the data of map area ......................................................................... 3-6

How to clear entire block of map area data ............................................................. 3-6

3.3 Guard zone alarm ..................................................................................................... 3-7

How to set guard zone alarm ................................................................................... 3-7

3.4 Nav line cross............................................................................................................ 3-8

How to edit ............................................................................................................... 3-8

How to move nav line ............................................................................................... 3-9

How to add ............................................................................................................. 3-10

How to delete ......................................................................................................... 3-11

How to clear ........................................................................................................... 3-11

3.5 Alarm List ................................................................................................................ 3-12

3.6 Alarm History list ..................................................................................................... 3-13

3.7 Alarm on/off (TT and AIS) ....................................................................................... 3-14

Chapter 4 Target (AIS, TT and Trial manoeuvre) ..................................................... 4-1

4.1 Common setting ........................................................................................................ 4-1

VECTOR REL/TRUE ............................................................................................... 4-1

CPA/TCPA alarm ..................................................................................................... 4-3

LOST ALARM ........................................................................................................... 4-3

Set AIS ID DISP TYPE ............................................................................................. 4-4

Set TT ID DISP TYPE .............................................................................................. 4-4

Set ID DISP SIZE ..................................................................................................... 4-5

Set Input range ......................................................................................................... 4-5

ASSOCIATION ......................................................................................................... 4-6

Automatic acquisition area ....................................................................................... 4-7

PAST POSN: Past position ...................................................................................... 4-8

4.2 AIS ............................................................................................................................ 4-9

Enable AIS function ................................................................................................ 4-10

Select ID ................................................................................................................. 4-10

ACTIVE/SLEEP ...................................................................................................... 4-10

0093169010-10 xiii

Contents MDC-7000/7900 Series

Ship outline ............................................................................................................. 4-10

HDG line ................................................................................................................. 4-10

Turn indicator .......................................................................................................... 4-11

OS display .............................................................................................................. 4-11

OS MMSI ................................................................................................................ 4-11

Message display ..................................................................................................... 4-11

AIS filter .................................................................................................................. 4-12

AIS alarm [Sleeping lost] ........................................................................................ 4-13

AIS auto ACQ ......................................................................................................... 4-13

Types of AIS target symbol ..................................................................................... 4-14

4.3 TT (ARPA) .............................................................................................................. 4-17

Limitations of the TT function ................................................................................. 4-17

Enable TT function ................................................................................................. 4-18

Manual acquisition .................................................................................................. 4-18

Delete TT target ...................................................................................................... 4-19

Delete all TT targets ............................................................................................... 4-19

Reference target acquisition ................................................................................... 4-20

Types of tracked target symbol .............................................................................. 4-22

TEST TGT .............................................................................................................. 4-23

4.4 Trial manoeuvre....................................................................................................... 4-34

Chapter 5 Nav tool ................................................................................................... 5-1

5.1 Guard line .................................................................................................................. 5-1

5.2 HL blink ...................................................................................................................... 5-2

5.3 Stern line ................................................................................................................... 5-2

5.4 Barge icon ................................................................................................................. 5-3

Chapter 6 Map operation ......................................................................................... 6-1

6.1 MAP function display ON or OFF .............................................................................. 6-1

6.2 OWN SHIP PAST TRACK ......................................................................................... 6-1

How to Clear OWN SHIP PAST TRACK .................................................................. 6-2

6.3 Target track past position display .............................................................................. 6-3

6.4 COAST LINE ............................................................................................................. 6-4

How to edit ................................................................................................................ 6-4

How to move ............................................................................................................. 6-6

How to add ............................................................................................................... 6-7

How to delete ............................................................................................................ 6-8

How to clear .............................................................................................................. 6-8

6.5 NAV LINE .................................................................................................................. 6-9

6.6 ROUTE .................................................................................................................... 6-10

xiv 0093169010-10

MDC-7000/7900 Series Contents

6.7 EVENT MKR ............................................................................................................ 6-11

6.8 AREA ...................................................................................................................... 6-12

6.9 MONITORED ROUTE ............................................................................................ 6-12

6.10 WPT ID DISP .......................................................................................................... 6-13

6.11 TARGET TRACK ID ................................................................................................ 6-13

6.12 DATUM .................................................................................................................... 6-13

6.13 EDIT USER DATUM ............................................................................................... 6-14

6.14 POSITION OFFSET ................................................................................................ 6-14

POSITION MANUAL OFFSET ............................................................................... 6-14

6.15 GPS BUOY ............................................................................................................. 6-15

6.16 WPT FLAG .............................................................................................................. 6-16

6.17 LAT/LON LINE ........................................................................................................ 6-16

6.18 C-MAP chart display ............................................................................................... 6-16

Chapter 7 System and Maintenance menu operation ............................................. 7-1

7.1 SYSTEM MENU ........................................................................................................ 7-1

7.2 Change UTC/LOCAL time......................................................................................... 7-1

7.3 User memory............................................................................................................. 7-2

Change USER memory ............................................................................................ 7-2

How to save to memory ........................................................................................... 7-2

Edit User Name ........................................................................................................ 7-2

Default User setting .................................................................................................. 7-2

7.4 Sound setting ............................................................................................................ 7-3

Sound ON/OFF ........................................................................................................ 7-3

Sound frequency ...................................................................................................... 7-3

Key click ON/OFF .................................................................................................... 7-3

External buzzer setting ............................................................................................. 7-3

7.5 LANGUAGE select .................................................................................................... 7-4

7.6 DISPLAY INFOMATION (DISP INFO) ...................................................................... 7-4

7.7 HELP window ON/OFF ............................................................................................. 7-5

7.8 MAINTENANCE MENU ............................................................................................ 7-5

7.9 BACKUP of Setup data (Cannot be used while transmitting) ................................... 7-6

Internal save of setup data ....................................................................................... 7-6

External save of setup and map data ...................................................................... 7-6

Parameter reset ....................................................................................................... 7-7

MAP/PAST reset ...................................................................................................... 7-7

7.10 TOTAL HOUR and TX HOUR (Cannot be used while transmitting) ......................... 7-7

7.11 MENU SETUP........................................................................................................... 7-8

7.12 System Program ....................................................................................................... 7-9

0093169010-10 xv

Contents MDC-7000/7900 Series

Version confirmation ................................................................................................. 7-9

How to update the system program ......................................................................... 7-9

Chapter 8 Principal of radar system ......................................................................... 8-1

8.1 What is radar system?............................................................................................... 8-1

Side lobe ................................................................................................................... 8-1

Beam width ............................................................................................................... 8-2

8.2 Characteristics of radar radio wave ........................................................................... 8-2

Target hardness reflected ......................................................................................... 8-2

Radar shadow .......................................................................................................... 8-3

False image .............................................................................................................. 8-3

8.3 Radar interference ..................................................................................................... 8-5

Chapter 9 Simple fault diagnosis ............................................................................. 9-1

9.1 No alarm sound ......................................................................................................... 9-2

9.2 Operation unit (panel) key is not operational ............................................................ 9-3

9.3 TT is not operational .................................................................................................. 9-4

9.4 No AIS display ........................................................................................................... 9-5

9.5 Need to confirm serial input ...................................................................................... 9-6

9.6 No radar video display............................................................................................... 9-7

9.7 Frozen Display .......................................................................................................... 9-8

Indication of presentation failure .............................................................................. 9-8

9.8 About alarms ............................................................................................................. 9-9

Alarm list ................................................................................................................. 9-10

Operation note ........................................................................................................ 9-14

Chapter 10 Specifications ...................................................................................... 10-1

10.1 Antenna and Scanner unit ....................................................................................... 10-1

10.2 Display, Processor and Operation unit .................................................................... 10-2

10.3 External view and dimensions ................................................................................. 10-3

Chapter 11 Appendix .............................................................................................. 11-1

11.1 Menu tree ................................................................................................................ 11-1

11.2 Special key operations .......................................................................................... 11-13

11.3 Details of the data input format ............................................................................. 11-15

11.4 Details of TT tracking data output ......................................................................... 11-25

11.5 Details of the radar data output ............................................................................. 11-26

11.6 Interface specification............................................................................................ 11-29

11.5.1 NAV and EPFS serial data input/output specification ................................ 11-29

11.5.2 SDME serial data input/output specification .............................................. 11-30

11.5.3 VDR (external monitor) and Alarm output signal specification .................. 11-31

xvi 0093169010-10

MDC-7000/7900 Series Contents

11.5.4 Serial data input/output specification (AIS) ............................................... 11-32

11.5.5 Radar input/output signal specification ..................................................... 11-33

11.5.6 Talker device code of the data output devices .......................................... 11-34

11.5.7 Priority of talker device code ..................................................................... 11-34

Chapter 12 Index ................................ ................................ ................................ ....12-1

0093169010-10 xvii

Introduction MDC-7000/7900 Series

xviii

Introduction

The MDC-7060/7010/7020/7960/7910/7920 type Radar system 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) and Operation 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 small targets.
 Clear distinction between a moving target and land by true trail display.
 Provision of multi targets TT (ARPA) information and AIS information.
 Various models for selection of optimum radar for your needs.
 Capable of adjusting gain, anti- sea clutter, anti- rain clutter, bearing cursor, and range marker, etc.

using rotating knobs.

 The waterproof operating panel (IP23) has a great flexibility in installation.
 Capable of remote control using USB Mouse/Trackball.
 Simple and easy operation by user-friendly rotating knobs.

0093169010-10

MDC-7000/7900 Series Configuration items

No.

Name

Type

1

Antenna

* 2 Scanner

** 3 Processor unit

MRM-108

4

Operation unit with connecting cable

MRO-108

5

Connecting cable

242J159098B-15M

6

DC power cable

CW-259-2M

7

Spare parts

SP-MRD/MRM-108

8

Installation material

M12-BOLT.KIT

9

Installation material

CONNECTOR.KIT

10

Operation manual

MDC-7000_7900.OC.OM.E

11

Installation manual

MDC-7000_7900.OC.IM.E

12

Quick reference

MDC-7000_7900.OC.QR.E

No.

Name

Type

1

Antenna

*

2

Scanner

** 3 Display unit

MRD-108

4

Operation unit with connecting cable

MRO-108

5

Connecting cable

242J159098B-15M

6

DC power cable

CW-259-2M

7

Spare parts

SP-MRD/MRM-108

8

Installation material

M12-BOLT.KIT

9

Installation material

CONNECTOR.KIT

10

Operation manual

MDC-7000_7900.OC.OM.E

11

Installation manual

MDC-7000_7900.OC.IM.E

12

Quick reference

MDC-7000_7900.OC.QR.E

Configuration items

System configuration

MDC-7060/7010/7020

* RW701A-04: 4feet, RW701A-06: 6feet, RW701B-09: 9feet
** RB717A: 6kW (MDC-7060), RB718A: 12kW (MDC-7010), RB719A: 25kW (MDC-7020)

MDC-7960/7910/7920

* RW701A-04: 4feet, RW701A-06: 6feet, RW701B-09: 9feet
** RB717A: 6kW (MDC-7960), RB718A: 12kW (MDC-7910), RB719A: 25kW (MDC-7920)

0093169010-10 xix

Configuration items MDC-7000/7900 Series

xx

No.

Name

Type

Comment

1

Gyro Interface

S2N, U/N 9028C

Gyro converter

2

Log pulse NMEA
converter

L1N, U/N 9181A

200pulse/NM only

3

Rectifier unit
PS-010

5A fuse attached.

4

VL-PSG001

20A fuse attached.

5

AC power cable

VV-2D8-3M

Without a connector on the both sides

6

Junction box

JB-35

With CW-376-5M

7

Connecting
cable

CW-373-*
*: 5M, 10M, 30M

With 6-pin water resistant connectors at both
ends (cable for data)

8

CW-374-5M

With a 6-pin connector and a 6-pin water
resistant connector (cable for data)

9

CW-376-5M

With a 6-pin water resistant connector and one
end plain (cable for data)

10

CW-387-5M

With a 8-pin water resistant connector and one
end plain (cable for AIS)

11

CW-561-*
*: 10M, 30M

With 12-pin water resistant connectors at both
ends (cable for remote display)

12

CW-576-0.5M

With a 10-pin water resistant connector and
D-Sub connector (analog RGB)

+Alarm out

13

Operation unit
connecting cable

CW-401-*
*: 5M, 10M

With connectors on both sides

14

Antenna unit –
Display unit
connecting cable

242J159098C-20M

With connectors on both sides

15

242J159098D-30M

With connectors on both sides

16

242J159098x-xxM
xx: 100 m max

With a connector on the both sides

Option list

0093169010-10

MDC-7000/7900 Series Chapter 1 Display and Operation

1-1

Range scale

Range Rings

MODE

STAB

Off center

Day/Night

Pulse width

TX/Standby

Frequency band

Picture freeze
detection

REF position number 1-4

REF position CCRP/ANT

When there is not alarm information, this
area can display the graph of navigation
data.

EBL1

Upper left corner

Upper right corner

Lower left corner

Lower right corner

Own ship
data

Target
status

Target and
MAP
Information
area

Assistant
display
(Navigation
Information)

Alarm
display
(Nav graph)
area

Heading
line

ERBL

EBL2
(OFFSET)

Range Rings

VRM1

VRM2

PI

PI

PI

PI

Alarm
status

Chapter 1 Display and Operation

1.1 Radar Display

Upper left corner

0093169010-10

Chapter 1 Display and Operation MDC-7000/7900 Series

1-2

ERBL data

Cursor position data

VRM1 distance

VRM2 distance

Distance of selected No.4 PI

Inter-switch mode

TUNE setting
GAIN setting
SEA setting
RAIN setting

PICTURE setting

PROCESS setting

EXPANSION setting

VIDEO mode setting

Sector MUTE ON

MAP function display

TRAIL TRUE/REL

TRAIL TIME

Own Ship Past Track ON

EBL1

EBL2

EBL1 active mark

EBL bearing

Offset EBL move mode TM/RM

Selected PI
Active PI

Bearing of
selected PI

Upper right corner

Lower left corner

Lower right corner

0093169010-10

MDC-7000/7900 Series Chapter 1 Display and Operation

1-3

UTC/LOCAL TIME

Date
Day/Month/Year

Time

Heading
CTW or COG

STW or SOG

Set and Drift

Own ship position

Vector Time

Vector REL/TRUE

Limit CPA

Limit TCPA

AIS and TT Lost Alarm

Association setting

AIS ON

TT ON

AIS and TT Past position
Indication Mode REL/TRUE
Indication Time

Activity AIS Filter Icon

Indication AtoN AIS

AIS Auto Acquisition
by CPA/TCPA

AIS Auto Acquisition
by Range (0.0NM to 64.0NM)

Own ship data

Target status

0093169010-10

Chapter 1 Display and Operation MDC-7000/7900 Series

1-4

Change TT shape

Cursor and press ENT key.

Edit LAT/LON data

Change Color

Deletion of indication data

Line indication between own ship
position and marker point.

Comment input

Target and MAP information area

Selected AIS, TT or MAP (COAST LINE, NAV LINE, ROUTE, EVENT MKR and AREA) information is
displayed, this data can be changed by selecting with cursor and pressing ENT key.

0093169010-10

MDC-7000/7900 Series Chapter 1 Display and Operation

1-5

NAV INFO

TGT OUTLINE

TGT LIST CPA/TCPA

TGT LIST BRG/RNG

TGT LIST LAT/LON

TGT LIST COG/SOG

TGT LIST LABEL

SELECTED AIS INFO

BIRDVIEW

WIDEVIEW

ZOOMVIEW

Assistant display (Navigation information)

Selection values are NAV INFO, TGT OUTLINE, TGT LIST (CPA/TCPA), TGT LIST (BRG/RNG), TGT
LIST (LAT/LON), TGT LIST (COG/SOG), TGT LIST (LABEL), SELECTED AIS INFO, BIRDVIEW,
WIDEVIEW and ZOOMVIEW.
TGT LIST can be sorted by CPA, TCPA, RNG, TGT and SEL
CPA: It is displayed with the nearest first from the top of display.
TCPA: It is displayed with the shortest first from the top of display.
RNG: It is displayed with the nearest first the top of display
TGT: It is displayed with the nearest to the selected target first from the top of display.
SEL: It is displayed with the selected target first from the top of display.

0093169010-10

Chapter 1 Display and Operation MDC-7000/7900 Series

1-6

Active
Unacknowledged alarm

Active
Silenced alarm

Active
Acknowledged alarm

Active
Responsibility transferred alarm

Rectified
Unacknowledged alarm

Category (A, B or C)

Alarm ID (0 to 9999: Specified by the IMO,
10000 to 9999999: Peculiar to a maker)

Time of alarm occurrence

ID of cause device, Source of alarm

Alert management
icons

Message

ALARM A 9999999
UTC 15 / 10 / 14 16:23
RADAR RADAR 1
MESSAGE

Priority

Alarm display area

When a malfunction or operation error has been detected in the radar, alarm message will appear at
the alarm display area.
Abnormalities are categorized as [ALARM], [WARNING] and [CAUTION]. When these messages
actually appear and there is something wrong with radar, record the alarm details by type, location and
status and press OFF key. The alarm sound (when ALARM and WARNING) and display will disappear.
Multiple errors may be displayed one by one. Record all alarms and press OFF key for every alarm.
Alarm list: Refer to 9.8 About alarms “Alarm list”.

ALARM (Displayed with red)

In case of unacknowledged alarm, icon and ALARM of priority will be flashing, and 3 short audible
signals will be repeating every 7 sec.
In case of silenced alarm, audible signals will be stopping. If silenced alarm condition keeps more than
30sec. silence alarm condition will cancel.

Type of ALARM icons

0093169010-10

MDC-7000/7900 Series Chapter 1 Display and Operation

1-7

Active
Unacknowledged warning

Active
Silenced warning

Active
Acknowledged warning

Active
Responsibility transferred warning

Rectified
Unacknowledged warning

Caution

WARNING A 9999999
UTC 15 / 10 / 14 16:23
RADAR 1
MESSAGE

CAUTION A 9999999
UTC 15 / 10 / 14 16:23
RADAR RADAR 1
MESSAGE

WARNING (Displayed with yellowish orange)

In case of unacknowledged alarm, icon and WARNING of priority will be flashing, and 2 short audible
signals will be repeating every 60 sec.

Type of WARNING icons

CAUTION (Displayed with yellow)

In case of CAUTION status, icon and CAUTION of priority is not flashing and audible signal is silent.

Type of CAUTION icon

0093169010-10

Chapter 1 Display and Operation MDC-7000/7900 Series

1-8

Alarm icon

Icon name

Setting method (Refer to Chapter 3 Alarm)

Echo alarm

Refer to 3.1 Echo alarm

Map area alarm

Refer to 3.2 Map area alarm

Nav line cross alarm

Refer to 3.4 Nav line cross

Temperature and depth

Wind 1

Wind 2

Set/drift 1

Set/drift 2

Course/ speed 1

Course/ speed 2

Echo level monitor

Own ship position

VRM 1 marker

Selected range marker

Alarm display area (Navigation graph)

Following navigation data graphs can display at alarm display area.

Water temperature and water depth
Wind
Set/drift
Course and speed
Radar echo level monitor

1 Move cursor on the alarm display area with trackball, and press ENT key.
2 Navigation data graph will be displayed as follows.

It is necessary to input MTW sentence to display water temperature.
It is necessary to input DPT or DBT sentence to display water depth.
It is necessary to input MWD sentence to display wind direction and speed.
It is necessary to input VDR sentence to display set and drift.
Echo level monitor shows the signal level of EBL1 direction.

Alarm status

The icon of alarm status will be displayed at the lower left corner of the display.

Alarm icons are displayed only when alarm function is active and they are not displayed when alarm
function is inactive. Alarm icons are displayed in red color while alarm is detected.

0093169010-10

MDC-7000/7900 Series Chapter 1 Display and Operation

1-9

No.

Key/knob name

Contents

1

POWER ON/OFF key

Turn on and off the power.

2

POWER lamp

Status of power on.

3

STBY/TX key

Transmission on and off.

4

SP/LP key

Change transmission pulse width.

5

DAY/NIGHT key

Change echo color, day or night.

6

EBL1 key

EBL1 on and off

7

EBL2 key

EBL2 on and off

8

BRILL key

Display brilliance adjust mode on and off

9

EBL/BRILL knob

Adjust EBL1,EBL2 or display brilliance

10

OFFSET lamp

Status lamp of offset EBL mode on

11

RAIN knob

Reduce rain clutter

12

SEA knob

Reduce sea clutter

13

GAIN knob

Adjust radar receiver gain

14

FUNCTION keys F1 - F6

Quick short cut menu access

15

VRM1 key

VRM1 on and off

16

VRM2 key

VRM2 on and off

28 1 25

26 2 3

4 5 6

7

14 9 8

10

13

11

17

18

19

12

15

16

20

21

22

23

24

27

1.2 Operation Unit

0093169010-10

Chapter 1 Display and Operation MDC-7000/7900 Series

1-10

17

PANEL key

Control panel brilliance adjustment

18

VRM/PANEL knob

Adjust VRM1,VRM2 or panel brilliance

19

PI lamp

Status lamp of parallel index lines

20

ERBL key

Electronic range and bearing line on and off

21

OFF key

Erase heading line, stop alarm sound, etc.

22

MENU key

Turn MENU on and off

23

ACQ key

Start manual TT acquisition

24

ENT key

Key most often used to make a selection

25

RANGE key

Change radar range scale.

26

MODE key

Change display mode HU/NU/CU

27

OFF CENT key

Off center mode on and off

28

TRACKBALL

Used to make MENU selection and move cursor

0093169010-10

MDC-7000/7900 Series Chapter 1 Display and Operation

1-11

MENU
ECHO >
TRAIL >
DISPLAY >
ALARM >
TARGET >
NAV TOOL >
MAP >
BRILL >
SYSTEM >
MAINTENANCE >

>ECHO
PICTURE MODE

PICTURE1

PROCESS

OFF
EXPANSION 2
IR OFF
VIDEO CONTRAST 3
NOISE REJ OFF
COLOR REJ OFF
PULSE WIDTH >
SART OFF
PICTURE RESET >
PICTURE ENABLE >

>ECHO
PICTURE MODE

PICTURE1

PROCESS

OFF
EXPANSION 2
IR OFF
VIDEO CONTRAST 3
NOISE REJ OFF
COLOR REJ OFF
PULSE WIDTH >
SART OFF
PICTURE RESET >
PICTURE ENABLE >

OFF

1
2
3
4

1.3 Menu usage

Turn MENU on and off

1 Press MENU key, “Menu” display on the right side of the display.
2 “Menu” display is turned off by pressing MENU key again.

Select menu item

1 Press MENU key and “Main menu” will show on the display. Select one of main menu items by

moving the trackball up or down.

2 Move the trackball to the right after making selection in main menu and the sub menu will show on

the display.

3 Select a sub menu item by moving the trackball up or down.
4 Move the trackball to the right after making selection in sub menu and value of selected item will

show.

5 Select desired value, then press ENT key.

Note: Pay attention that ENT key must be pressed for selected item to take effect.

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

To exit from menu, press MENU key again.

<Example of menu display>

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

0093169010-10

operation is required after power is turned on.

Chapter 1 Display and Operation MDC-7000/7900 Series

1-12

Standby

Standby

Transmission

Transmission

Note: About the shaded menu:

[INTER-SWITCH] in [SYSTEM] menu, and [SECTOR MUTE], [BACKUP], [TOTAL HOUR] and [TX
HOUR] in [MAINTENANCE] menu are not available during transmission, therefore they are greyed
out.

1.4 Cursor Access usage

Basic radar functions can be operated by using the trackball and ENT key without using menu.
This function is effective for the operation with USB Mouse/Trackball from the remote place.
Move cursor on a grey item with trackball, then press ENT key.

0093169010-10

MDC-7000/7900 Series Chapter 2 Radar Basic Operation

2-1

Chapter 2 Radar Basic Operation

2.1 Power ON/OFF

Power ON

Press POWER ON/OFF key located at the lower left corner of the operating unit. Radar system is
turned on with beep sound.

After power on, radar model name and preheating countdown time will appear at the center of the

display.

Wait for 120 sec. (*1) or 180 sec. (*2) until preheating countdown time has disappeared, and status

changes from WAIT to STANDBY at the upper left of the display.

(*1) MDC-7060/7960/7010/7910

(*2) MDC-7020/7920

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.

Note: The power source shall not be turned off until operational window is displayed.

Power OFF

Press POWER ON/OFF key for two sec. for power off.
“SHUTDOWN” message appears at the center of the display, release POWER ON/OFF key
immediately, and from five to ten sec. later will completely power off.

Note:

• The power source shall be turned off by pressing POWER ON/OFF key.
When the ship’s power source is lost during operation, an important setup data may be lost

• After radar has been turned off, wait at least five seconds before turning it back on.

0093169010-10

Chapter 2 Radar Basic Operation MDC-7000/7900 Series

2-2

BRILL adjustment window

PANEL adjustment window

Push

Brighter

Darker

EBL knob

Press

Push

BrighterDarker

VRM knob

Press

2.2 Change Brilliance

Display Brilliance

1 Press BRILL key.
2 The BRILL adjustment window will appear in the upper left of the display.

3 Turn EBL knob clockwise to increase the display brilliance.

Turn EBL knob counterclockwise to decrease the display brilliance.
The display brilliance can also be changed in five steps by pressing EBL knob.

Operation unit Brilliance

1 Press PANEL key
2 The PANEL adjustment window will appear in the upper left of the display.

3 Turn VRM knob clockwise to increase the lighting of the panel brilliance.

Turn VRM knob counterclockwise to decrease the lighting of the panel brilliance.
The panel brilliance can also be changed in five steps by pressing VRM knob.

0093169010-10

MDC-7000/7900 Series Chapter 2 Radar Basic Operation

2-3

Operation of STBY/TX key

Operation of Trackball

2.3 Transmission

Transmission ON

After preheating time countdown is completed, the radar can be placed in transmit mode.
Press STBY/TX key, or select the STANDBY box at the upper left corner of the display using trackball
and press ENT key.
Radar system will start transmission.
The status of STANDBY changes to TRANSMIT.

Transmission OFF

Press STBY/TX key, or select the TRANSMIT box at the upper left corner of the display using trackball
and press ENT key to stop transmission.
The status of TRANSMIT returns to STANDBY at upper left of the display.

0093169010-10

Chapter 2 Radar Basic Operation MDC-7000/7900 Series

2-4

AUTO tune mode value box

MAN tune mode value box

2.4 Tuning method

The transmitting and receiving frequency of this radar may become detuned by environmental
changes.
This result in “detuning” of the gain and the same echo images may show weaker, even if the setup is
the same as before.
Tuning method can be changed directly in the upper right of the display, with trackball and ENT key,
without using menu function.
Tuning menu operation method, refer to 4.2.1 Tune adjustment of Installation manual.

Change MAN (manual) and AUTO

Move cursor to the MAN or AUTO box (whichever is shown) of tune indicator at upper right of the
display using trackball and press ENT key.

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 at 0.
2 Set lower GAIN until land echo almost disappears.
3 Press GAIN/TUNE knob until light around knob turns red.

Tune value box will appear on the place of MAN or AUTO box of tune indicator.

4 Turn GAIN/TUNE knob clockwise or counterclockwise to get the strongest land echo.
5 When tune adjustment is completed, press GAIN/TUNE knob or ENT key to save setting data to

internal memory.
Light around GAIN/TUNE knob will turn green.

6 Repeat step 3 to 5 for both MAN and AUTO modes.

0093169010-10

MDC-7000/7900 Series Chapter 2 Radar Basic Operation

2-5

Model name

MDC-7020/7920 (Max. output : 25 kW)

MDC-7010/7910 (Max. output : 12 kW)

MDC-7060/7960 (Max. output: 6 kW)

Range(NM)

0.125

0.25

0.5

0.75

1.5 3 6

12

24

32*

48

64*

96**

1.5

Indicated distance

*Bearing scale

Range

ANT position

Trackball operation
Cursor point

2.5 Change range scale

The coverage area can be changed by changing range scale.
Larger the value of range the more coverage area expands. (The target image will become smaller.)
The range scale value and range rings value are indicated at the upper left on the display.
Range scale can be changed directly at the upper left of the display, with trackball and ENT key, without
using RANGE+ and RANGE- key.
Range is changed centering on the antenna position.

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 closer to Antenna position.

Model-specific ranges are as shown below.

* 32NM and 64NM is for 6kW / 12kW only.
** 96NM is for 25kW only.

Change range unit (NM / km / sm / kf / ky)

The unit of range measurement can use five kinds of distance units.
Selection unit: NM: nautical mile
km: kilo meter
sm: statute mile
kf: kilo feet
ky: kilo yard

1 Press MENU key to display “Menu”.

Select [DISPLAY] => [RANGE UNIT] => select [NM], [km], [sm], [kf] or [ky], and press ENT key.

When changing to other range unit, Range and Cursor range unit will be changed.

0093169010-10

Chapter 2 Radar Basic Operation MDC-7000/7900 Series

2-6

2.6 Adjust receiver gain (GAIN)

It is recommended to adjust [GAIN] in the upper right side of the display to have the evenly scattered
vague background noise with low intensity in the PPI.
Lower than required [GAIN] may result in missing 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 path.
Lower [GAIN] until masked target echo can be recognized outside of the area where 2.7 “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 or snow), adjust GAIN knob and RAIN knob side by side.
[GAIN] state is displaying in the upper right of the display.

Selection of MAN GAIN and AUTO GAIN

By GAIN knob
When the GAIN knob is pressed, AUTO GAIN and MAN GAIN change alternately.

By trackball

1 Move cursor on the MAN or AUTO display (whichever is shown) at right side of [GAIN] on the top

of the display.

2 Press ENT key to change AUTO or MAN as appropriate.

AUTO adjustment of GAIN

When AUTO GAIN is set, [GAIN] is adjusted automatically.

Note: AUTO GAIN may remove weak target echoes, or too much sea clutter may be on the display, turn

GAIN knob clockwise or counterclockwise to adjust AUTO GAIN effectively.
If not setup properly, adjust AUTO GAIN settings by referring to 4.5.3 Setup GAIN MIN and MAX
mode of Installation manual.

0093169010-10

MDC-7000/7900 Series Chapter 2 Radar Basic Operation

2-7

Up

Down

Gain

Own
ship

Land

Result picture after adjustment a [GAIN] knob

Own
ship

Land

Own
ship

Land

MAN adjustment of GAIN

When MAN GAIN is selected, GAIN can be adjusted manually.

1 Turn GAIN knob clockwise to increase receiving gain.

Turn GAIN knob counterclockwise to decrease receiving gain.

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.

0093169010-10

Chapter 2 Radar Basic Operation MDC-7000/7900 Series

2-8

SEA clutter at center

After Adjusted MAN SEA

2.7 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 by low (weak) level.
If anti-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 anti-SEA level 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.
If target echoes are masked by excessive false echoes within anti-SEA effective area, 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.

Note:

• Small targets become harder to detect when [SEA] is used together with [RAIN]. Therefore, please

adjust them carefully.

• The echo process (refer to 2.23 Echo process) is useful to reject sea clutter. Be careful, when the

echo process is active, high speed targets are harder to detect than stationary ones.

Selection of MAN SEA and AUTO SEA

By SEA knob
When the SEA knob is pressed, AUTO SEA and MAN SEA change alternately.
By trackball

1 Move cursor on the MAN or AUTO display (whichever is shown) at right side of [SEA] on the top of

the display.

2 Press ENT key to display AUTO or MAN as appropriate.

0093169010-10

MDC-7000/7900 Series Chapter 2 Radar Basic Operation

2-9

High

Low

SEA

AUTO adjustment of SEA

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

Note: AUTO SEA may erase weak target echoes. If excessive sea clutter erasing or too much clutter is

observed, turn SEA knob clockwise or counterclockwise to adjust AUTO SEA effectively.
If not setup properly, adjust it by referring to 4.5.3 Setup GAIN MIN and MAX mode of Installation
manual.
In case there are strong echo targets such as in the harbor or canal, anti-SEA tends to suppress
excessively, use MAN SEA in that case.

Manual adjustment of SEA

When MAN SEA is selected, anti-SEA can be adjusted manually.
By using SEA knob, suppress this effect and make targets seen easier.
[SEA] state is displayed in the upper right of the display.

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

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

2 Turn SEA knob clockwise until even low (weak) SEA clutter is displayed by observing the display.
3 Adjust SEA knob from time to time to get low (weak) SEA clutter on the display as intensity of sea

clutter changes as time passes.

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 in actual targets being

lost.

• Manual SEA user keep watching and adjusting SEA with changing conditions.

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

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Chapter 2 Radar Basic Operation MDC-7000/7900 Series

2-10

Rain clutter

4 mm/h rain
(short pulse)

4 mm/h rain
(long pulse)

16 mm/h rain
(short pulse)

16 mm/h rain
(long pulse)

2.8 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.
Anti-RAIN is available MAN and CFAR.
Adjustment of MAN (manual) and CFAR (Constant False Alarm
Rate) by turning RAIN knob suppresses clutter, and helps to see
targets clearly.
MAN is effective for suppression of rain and snow.
CFAR is effective for suppression of sea, rain and snow clutter.

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

Note:

• Small target becomes harder to detect when [RAIN] is used together with [SEA]. Therefore, please

adjust them carefully.

• The echo process (refer to 2.23 Echo process) is useful to reject rain clutter. Be careful, when the

echo process is active, high-speed targets are harder to detect than stationary ones.

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

The details of the figure (An example of 6 NM range)
A target which was able to observe at 6 NM (Original range of first detection), can only be detected at
the range (Reduced Range of First Detection) shown below in rain condition.
4 mm/h rain (short pulse): approx. 5.6 NM 4 mm/h rain (long pulse): approx. 1.5 NM
16 mm/h rain (short pulse): approx. 3.9 NM 16 mm/h rain (long pulse): approx. 0.5 NM

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Strong

Weak

RAIN

After CFAR adjustment

Changing method of CFAR and MAN

By RAIN knob
When RAIN knob is pressed, MAN and CFAR change because of the alternation.
By trackball

1 Move cursor on the MAN or CFAR display (whichever is shown) at right side of [RAIN] on the top

of the display.

2 Press ENT key to alternate CFAR and MAN.

CFAR (Constant False Alarm Rate) adjustment

CFAR function is used to suppress of sea, rain and snow clutter
easily.
CFAR function is active when CFAR is indicated at the upper
right side of the display.
Level of CFAR is indicated on the left side of CFAR indication.

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

Turn RAIN knob counterclockwise to decrease anti-clutter effect.

2 Turn RAIN knob clockwise to get even low (weak) clutter while watching the display.

Note:

• In the case of CFAR mode, the gain adjustment is not possible.
Adjust SEA knob to suppress remaining sea clutter.

• In typical environment CFAR should be turned all the way down via RAIN knob, and no white level
should be indicated by CFAR window.

• 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 over adjusted.

• If there are strong echo targets such as in the harbor or channel, CFAR tends to suppress targets
excessively. In that case, change CFAR to MAN and use MAN SEA in addition.

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Strong

Weak

RAIN

After adjusted anti-SEA

After adjusted anti-SEA & RAIN MAN

RAIN MAN (manual) adjustment

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

Turn RAIN knob counterclockwise to decrease anti-clutter effect.
Turn GAIN knob clockwise until sea clutter is visible on the display.

2 Use anti-SEA (AUTO SEA or MAN SEA).
3 While observing the display, suppress RAIN clutter outside of anti-SEA effective area by turning

RAIN knob clockwise. Adjust RAIN so that sea clutter is lightly visible.

4 Intensity of RAIN clutter is affected by weather. Adjust by RAIN knob according to weather change

by watching the display.

Note:

• In typical environment RAIN should be turned all the way down via RAIN knob, and no white level
should be indicated by RAIN window.

• 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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2-13

6kW/12kW

25kW

IF Band width
Pulse width

Pulse repetition
frequency

Pulse width

Pulse repetition
frequency

S1

0.08μs

2500Hz

0.08μs

2000Hz

15MHz

S2

0.08μs

2500Hz

0.08μs

2000Hz

15MHz

M1

0.25μs

2000Hz

0.3μs

1300Hz

15MHz

M2

0.25μs

2000Hz

0.3μs

1300Hz

3MHz

M3

0.5μs

1000Hz

0.6μs

800Hz

3MHz

L1

0.7μs

700Hz

0.8μs

600Hz

3MHz

L2

1.0μs

500Hz

1.2μs

470Hz

3MHz

L3

1.0μs

450Hz

1.2μs

400Hz

3MHz

Range(NM)

0.125

0.25

0.5

0.75

1.5 3 6

12

24

32

48

64

SP mode

S1

S1

S1

S1

S2

M1

M3

L2

L2

L2

L2

L3

LP mode

S1

S1

S1

S2

M1

M3

L1

L2

L2

L2

L2

L3

Range(NM)

0.125

0.25

0.5

0.75

1.5 3 6

12

24

48

96

SP mode

S1

S1

S1

S1

S2

M1

M3

L2

L2

L2

L3

LP mode

S1

S1

S1

S2

M1

M3

L1

L2

L2

L2

L3

エ

ク

セ

ル

と

照

合

す
る

和

文

と

は

一

致

し

て

い
る

2.9 Change transmission pulse width (SP/LP)

This radar provides a function capable of achieving suitable target detection by manually changing the
transmission pulse width.

Eight different pulse widths are available.

The short (narrow) pulse width used in short range has high resolution and is effective for dense
targets.
The long (wide) pulse width used in long range has high gain (sensitivity) and is effective for detecting
small targets.
Two different pulse widths are set by default in the following ranges, 0.75NM, 1.5NM, 3NM and 6NM.
Ranges 0.25NM and below, and 12NM and above are setup with same pulse width in SP and LP.
Note: Refer to 2.29 Pulse width to set pulse width.
6kW/12kW

25kW

1 Press SP/LP key. Two different pulse widths are toggled by each key press.

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

Note: Pulse width can be changed directly at the upper left of the display, with cursor and ENT key.

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000

060

070

N

Land

Target 1

Target 2

Heading

H UPRM C UPRM C UPTM N UPRM N UPTM

2.10 Select 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.

1 Press MODE key. The display changes in following order by pressing MODE key. Current display

mode is displayed at the upper left of the display.

For H UP (Head up mode)

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

When heading signal is connected, H UP works by stabilized mode. (STAB H UP)
Note:

• This is a presentation mode stabilized in azimuth with fixed origin in which the radar image is oriented
“up” toward the top of the bearing scale.

• Radar echoes and tracked targets are shown at their measured distances and moving in a direction
relative to own ship’s heading.

• The heading line points from the CCRP the top of the bearing scale showing own ship’s heading in

true bearing mode.

• The target trails mode can use both functions of true and relative.

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060

000

070

000

080

090

Specified course

< [C UP] selected >

< Heading deviated from course >

N

Land

Target 1

Target 2 Target 2

Heading

N

Land

Target 1

Heading

000

060

070

N

Land

Target 1

Target 2

Heading

HDG XXX.X

000

At the time of the XXX.X heading indication of own ship data at upper right of the display, H UP works
by non-stabilized mode.

Note:

• This is a presentation mode not stabilized in azimuth with fixed origin in which the radar image is
oriented “up” toward the top of the bearing scale.

• Radar echoes and tracked targets are shown at their measured distances and moving in a direction
relative to own ship’s heading.

• The heading line points from the CCRP to the top of the bearing scale showing 000 relative bearing.

• Target trails can use only relative mode.

For C UP (Course up mode)

When choosing Course up mode, current heading becomes the course at the top of the display and a
moving heading line indicates actual.
This mode is used to navigate towards a specified course.
It easily shows any deviation of own ship from the specified course.

Note:

• This is an azimuth-stabilized presentation in which the bearing scale can be oriented so that own

• The heading line points from the CCRP to own ship’s referenced heading on the bearing scale.

• If own ship’s heading differs from the course, then the heading line does not point vertically upwards

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ship’s course on the bearing scale is vertically above the CCRP.

from the CCRP until the bearing scale is reset (manually or automatically) to reflect the course
alteration.

Chapter 2 Radar Basic Operation MDC-7000/7900 Series

2-16

000

N

Land

Target 1

Target 2

Heading

For N UP (North up mode)

This mode always keeps true north at the top of the display.
A north oriented representation makes it easy to reference with a chart.

Note:

• This is an azimuth-stabilized presentation in which north on the bearing scale remains fixed vertically
above the CCRP.

• The heading line points from the CCRP to own ship’s referenced heading on the bearing scale.

• The true bearing of any target on the display is measured from north.

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Moving

Land

Fixed

Moving

Antenna
position

Moving

Land

Fixed

Moving

Antenna
position

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

Relative motion fixes your antenna position at the center of the display, and indicates the motion of
targets that surround your antenna position.
Your antenna position is displayed at the center. So, while the ship is moving, the fixed targets such as
the land also continue to move.
True motion indicates the motion of the target with respect to the specified bearing.
Fixed targets that do not move in any direction stay on the display, and all the moving targets move on
the display.
Note: The heading always continues to move. So, no true motion TM is available for H UP.

Relative motion (RM): The antenna position is fixed and the other surrounding targets move on the

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

True motion (TM): The antenna position on the display 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.

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75%

Antenna position

75%

Antenna position

Antenna position direction and relocatable are in TM

Heading line

TM reset position

N-UP or C-UP TM mode is selected, own ship position moves to opposite side of heading direction,
and begins to show the true motion image. When own ship position reaches center of the range
scale, own ship position is to reset to the course over water or to the opposite direction of the
course over ground.

Reset true motion

Own ship display position can be manually reset when in true motion operation at any given point, by
following procedure.

Press MENU key to display “Menu”.
Select [DISPLAY] => [TM RESET], and press ENT key.

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2.11 Ground and Sea stabilization

STAB MODE is a function to select speed for movement calculation for True trail, TT (ARPA), Past
position and True motion (TM).

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 display, by cursor and ENT key.

When SDME or EPFS is not available for any reason, it is possible to get the speed over ground by
setting reference target.
Refer to 4.3 TT (ARPA) “Reference target acquisition”.

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 upper right of the display 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 inputted by serial

data (VBW or VHW).

 Single axis water log indicated as LOG on the display cannot detect the effect of leeway.
 When speed information is interrupted for 30 seconds from SDME for any reason or VBW water

status flag is invalid, then the numerical indication of CTW/STW becomes XXX.X in orange color.
In this case, speed can be entered manually.

Manual speed input.
By menu

1 Press MENU key to display “Menu”.

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

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

By trackball

1 Press MENU key to display “Menu”.

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

2 Press MENU key to close menu.
3 Move cursor to the window on the right side of STW MAN on the top right side of the display.

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4 Press ENT key to get ready for speed entry. Enter speed by using trackball.
5 Press ENT key to save the input.

GND (Ground stabilization)

GND stabilization uses COG (course over ground) and SOG (speed over ground) referenced to the
ground. Accordingly course and speed indication at the upper right side of the display becomes
COG/SOG.

 SOG is the absolute speed of the ship with reference to the land.
 Two-dimensional GND SDME device like dual axis LOG and EPFS (electronic position fixing

system) provide information for serial input.

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

priority.

 If 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 numerical indication of COG/SOG becomes XXX.X in
orange color.

 If SDME or EPFS is not usable due to failure or any other reason, then COG/SOG can be obtained

by setting Reference target.

Refer to 4.3 TT (ARPA) “Reference target acquisition”.

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2-21

RR on
“1” means range rings interval

RR 1 NM

Own
ship

Range

Ring separation

Range 6NM

Range rings

Ring separation 1NM

Range rings interval 1NM

Range rings interval

Reference point

Range rings

2.12 Measurement of distance by RR and VRM

There are three ways to measure distance to a target: Range Rings, Cursor or VRM.

Display Range Rings (RR)

Range rings (RR) are markers displayed at the specified distance from reference point.
They are used as a rough indication of the distance to a target.

1 Press MENU key to display “Menu”.

Select [NAV TOOL] => [RR] => [RR] => [ON], and press ENT key.

Note: [RR] display can be changed directly in the upper left of the display, by moving cursor and

pressing ENT key.

Note: When [NAV TOOL] => [BRG TRUE / REL] => [TRUE] is selected, 0° of the range rings indicates

North direction. While, when [REL] is selected it indicates heading direction.

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Increase of

range

Decrease of

range

VRM knob

VRM1

3.290NM

8.990NM

VRM1

Target

Reference point

Distance toTarget

Radius changed by VRM knob

Measurement Range (VRM: Variable Range Marker)

Two variable range markers [VRM1] and [VRM2] are provided.
Turn VRM knob and lay each circle on the desired target to read the distance to the target on the
display.

1 Press VRM1 key to display a dashed line circle of VRM1.

Turn VRM knob to adjust the line circle on the desired target.
The distance to the target is indicated at the lower right of the display, and also a symbol is
displayed on the left side of the distance value.

2 The dashed line circle is zoomed in or zoomed out by turning VRM knob clockwise or

counterclockwise, respectively.

Note: Turning VRM knob (while pressing it) changes the range quickly.

3 Another press of VRM1 key will make the circle disappear.
4 Press VRM2 key to activate the dotted line circle of VRM2.

Operation procedure and distance display are the same as VRM1.

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

Then, both the dashed line circle and the 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.

Measurement Range (Cursor)

Move the cursor on the target with trackball/joystick.
The distance and bearing to the target is indicated at the lower right of the display.

Note: While “MENU” is displayed, the cursor operation cannot be used.

Press ENT key while pressing OFF key to return the cursor
to reference point position.

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MDC-7000/7900 Series Chapter 2 Radar Basic Operation

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ClockwiseCounter

clockwise

EBL knob

EBL1

060.5°

060.5°

EBL1
Target

Bearing cahnges
by turning EBL knob

Target bearing from own ship

Reference point

Bearing changes
by turning EBL knob

2.13 Measurement of bearing by EBL

This feature is used for measuring the bearing of the target from the base point (reference point for
default value.) Two electronic bearing lines [EBL1] and [EBL2] are provided.
Turn EBL knob and lay each bearing line on the desired target and read the bearing on the display.
[Bearing mode] can be changed directly in the lower left of the display, by cursor and ENT key, without
using menu function.

1 Press EBL1 key, and the bearing line of EBL1 is displayed as a dashed line.

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

2 Rotate bearing line using 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.

Note: Turning EBL knob (while pressing it) changes the bearing quickly.

3 Another press of EBL1 key, and the dashed line disappears and the bearing value on the lower left

of the display also 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, press EBL1 key and press EBL2 key.

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

6 Press EBL key to switch EBL1 or EBL2 as you desired.

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

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Reference
point

EBL1

CURSOR

Push

EBL knob

Press

OFFSET

OFFSET EBL true or relative motion mark

Reference
point

CURSOR

EBL1

Using the EBL/VRM OFFSET

EBL (and VRM) base point can be changed to any position other than the initial reference point.
By changing the base point, the bearing from a random target can be measured.

1 Display the EBL (and VRM) for which the base point is required to be changed.
2 Move the cursor to new position.

3 Press EBL knob, and the base point of EBL (and VRM) changes.

During offset, the color of [OFFSET lamp] at the lower right of EBL knob changes from green to red,
and the “TM” or “RM” mark is added right of the numerical figures.
“TM” means true motion, and “RM” means relative motion of OFFSET EBL1 and EBL2.
The motion selection can be changed by [NAV TOOL] => [EBL] => [EBL1 OFFSET] or [EBL2
OFFSET] => select [RM] or [TM], and press ENT key.

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

VRM cannot offset alone.

When [NAV TOOL] => [VRM] => [OFFSET] => [ON] is selected, the base point can change a position
same as EBL.

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Relative mode

True mode

2.14 Bearing mode set up

This menu is used to change the bearing mode in EBL, PI, ERBL, Bearing scale and CURSOR.

The settings available in the true bearing with the true north of 000 degree, and in the relative bearing
with the heading of 000 degree.

1 Press MENU key to display “Menu”.

Select [NAV TOOL] => [BRG TRUE/REL] => [TRUE] or [REL], and press ENT key.

[EBL], [PI], [ERBL] and [CURSOR] can be changed directly on the display by using trackball.

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PI

000.0°

3.000NM

PI REL PI

000.0°

3.000NM

PI REL

HALF

FULL

2.15 Measurement of distance/bearing by PI

This function is used to display straight Parallel Index (PI) lines on one or both sides of the vessel,
range and bearing of which can be manipulated by following procedures.
There are two kinds of modes of CURSOR and LINE.
In LINE mode, display location (distance, bearing) of each line can be changed independently or
together when in BULK operation. The length of LINE can also be changed.

CURSOR mode

1 Press MENU key to display “Menu”.

Select [NAV TOOL] => [PI] => [MODE] => [CURSOR], and press ENT key.

PI line number setting

1 [PI] => [CURSOR] => select [NORMAL], [1], [2], [3], [4], [5], [6] or [7], and press ENT key.

NORMAL: PI line number is equal to range of range ring. Variable range is min: equal to range ring

one, max: 50% of selected range.

1 to 7: Designated number of PI is displayed. Variable range is min: 0, max: about 1.6 times of

selected range.

PI display side setting

1 [PI] => [PI DISP SIDE] => select [HALF] or [FULL], and press ENT key.

Operation

1 Press VRM knob, and PI lines are displayed.

Bearing is displayed by figure on middle lower left of the display, and distance between PI lines is

displayed on middle lower right of the display during PI is displayed.

2 Turn the VRM knob to change the interval between lines.
3 Turn the EBL knob to change the bearing.

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PI

000.0°

3.000NM

PI REL PI

000.0°

3.000NM

PI REL

HALF

FULL

LINE mode

1 Press MENU key to display “Menu”.

Select [NAV TOOL] => [PI] => [MODE] => [LINE], and press ENT key.

Detailed setting of the LINE mode

1 By following procedure user can turn any one of 7 lines ON or OFF and change its needed.

Press MENU key to display “Menu”.
Select [NAV TOOL] => [PI] => [LINE]
LINE: Lets user choose line number (1 to 7) and its parameters.
DISP: Lets user turn selected line ON or OFF.
START RNG: Lets user choose starting position of selected line.

(-96.0 to 96.0 NM)

END RNG: Lets user choose ending position of selected line.

(-96.0 to 96.0 NM)

Select [PI] => [PI DISP SIDE] => select [HALF] or [FULL]

Select [PI] => [PI OPERATION] => select [BULK] or [INDIVIDUAL]

(When BULK is selected all PI lines are operated together by VRM and EBL knobs.)
(When INDIVIDUAL is selected PI lines are operated one by one in sequence by

pressing VRM knob)

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Increase of

range

Decrease of

range

VRM knob

PI 1/4

000.0°

3.000NM

PI REL 1 /4

Push

VRM knob

PI 1/ 4

000.0°

3.000NM

PI REL 1/4

Total number of lines

Activated PI line number
1, 2, 4 and 7 lines are active in
this case.

Press VRM knob

Press VRM knob

Press VRM knob

Press VRM knob

Press

Operation

1 Press VRM knob, and PI lines are displayed.

By pressing VRM knob again, line number will be changed and will be turned off after the last line
selection.

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

respectively.
The lamp color of PI located at the lower left of VRM knob changes from green to red when PI is
activated.

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

Note: Turning VRM knob (while pressing it) changes the range quickly.

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ClockwiseCounter

clockwise

EBL knob

PI 1/ 4

000.0°

3.000NM

PI REL 1/4

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

Note: Turning EBL knob (while pressing it) changes the bearing quickly.

5 To return all PI lines to original position, press VRM knob while pressing OFF key.

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ERBL

000.0

°

1.00NM

ERBL

REL

CURSOR

Target B

Target A

ERBL

304.2

°

2.82NM

REL

Own ship

ERBL

304.2

°

2.82NM

REL

OFF

OFF key

ENT

ENT key

Target A

Target B

2.16 Measurement distance/bearing by ERBL

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 moving cursor to
reference point position.
[Bearing mode] can be changed directly in the lower right of the display, with trackball and ENT key,
without using menu function.

1 Press ERBL key and ERBL is displayed.

2 By moving cursor to target A, measurement of distance and bearing from target A to target B can

be obtained by using VRM knob and EBL knob.

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

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

.

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ERBL

000.0

°

1.00NM

ERBL

REL

CURSOR

Target B

Target A

ERBL

000.0

°

1.00NM

ERBL

REL

CURSOR

Target B

Target A

(LINE)

(RING)

Change ERBL mark to LINE or RING

ERBL mark can be changed from LINE to RING.

1 Press MENU key to display “Menu”.

Select [NAV TOOL] => [ERBL] => [RNG] => select [LINE] or [RING], and press ENT key.

Change ERBL offset method

(MDC-5500 series only)
ERBL offset function can be operated by “CURSOR” or “TM”.

1 Press MENU key to display “Menu”.

Select [NAV TOOL] => [ERBL] => [OFFSET] => select [CURSOR] or [TM], and press ENT key.

[CURSOR]: The basic point of ERBL moves with the movement of the cursor.
[TM]: A cursor position becomes the basic point of ERBL.

After that, a position is fixed without synchronizing cursor movement.
The operation is limited to a bearing marker and range marker.

Note: [TM] function needs heading and Lat/Lon signal input of the own ship.

A basic point moves to the position of the last [TM] setting.
Move cursor in a new basic point, and press ERBL key.

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2.17 Change color and brightness (Day/Night)

This function is used to change default echo, trail and all data color and contrast for day and night
mode.
DAY/NIGHT mode can be changed directly by pressing DAY/NIGHT key, or select DAY or NIGHT icon
at the upper left of the display by moving cursor and pressing ENT key.

Setup color

1 Select the mode (Day or Night) by pressing DAY/NIGHT key, color palette of which you would like

to change.

2 Press MENU key to display “Menu”.

Select [BRILL] => select [ECHO], [TRAIL], [BKGND PPI], [BKGND DATA], [DATA], or [OTHERS].
After selecting color for each item, press ENT key.
ECHO: WHITE, YELLOW, GREEN, MULTI, USER1 or USER2
TRAIL: BLUE, BROWN, USER1 or USER2
BKGND PPI: BLACK, BLUE, USER1 or USER2
BKGND DATA: BLACK, BLUE, USER1 or USER2
DATA: WHITE, GREY, USER1 or USER2
OTHERS SCALE: NORMAL, DARK, USER1 or USER2
OS TOOL: NORMAL, USER1 or USER2
TGT: NORMAL, USER1 or USER2
COAST LINE: NORMAL, USER1 or USER2
NAV LINE: NORMAL, USER1 or USER2
ROUTE: NORMAL, USER1 or USER2
EVENT MKR: NORMAL, USER1 or USER2
AREA: NORMAL, USER1 or USER2
PAST TRK: NORMAL, USER1 or USER2
MONITORED ROUTE: NORMAL, USER1 or USER2
LAT/LON LINE: NORMAL, USER1 or USER2
GPS BUOY: NORMAL, USER1 or USER2
CURSOR: NORMAL, DARK, USER1 or USER2
CHART LAND: BROWN, GREEN, LIME, YELLOW, USER1 or USER2
DEPTH: WHITE, BLUE, USER1 or USER2

3 Make sure day or night mode is selected by [BRILL] first before making adjustments in step 2.

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<R>

<G>

<B>

Black

0 0 0

Blue

0 0 255

Green

0

255

0

Light blue

0

255

255

Red

255 0 0

Pink

255 0 255

Yellow

255

255

0

White

255

255

255

Orange

255

152

0

Dark blue

0 0 128

Grey

128

128

128

Combination of representative colors

Setup USER1 and USER2 color

1 Select the mode (Day or Night) by pressing DAY/NIGHT key, color palette of which you would like

to change.

2 Press MENU key to display “Menu”.

Select [BRILL] => select [USER1] or [USER2].
After selecting the each item, and after adjusting each item with trackball, press ENT key.
You can change the following item's color.
ECHO:
TRAIL:
BKGND PPI:
BKGND DATA:
DATA:
SCALE:
OS TOOL:
TGT:
COAST LINE:
NAV LINE:
ROUTE:
EVENT MKR:
AREA:
PAST TRK:

MONITORED ROUTE:
LAT/LON LINE:
GPS BUOY:
CURSOR:
CHART LAND:
DEPTH:

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Setup brightness

This is to set up brightness of ECHO, TRAIL, BKGND, OS TOOL, TGT, MAP, CURSOR, DATA and
MENU/ALERT.
Default value of these items is 100 (max).
For safety reason, brightness cannot be adjusted to less than 20.

1 Select the mode (day or night) by pressing DAY/NIGHT key, brightness of which you would like to

change.

2 Press MENU key to display “Menu”.

Select [BRILL] => select [ECHO], [TRAIL], [BKGND], [OS TOOL], [TGT], [MAP], [CURSOR],
[DATA] and [MENU/ALERT].
After adjusting each item with trackball, press ENT key.

Color and brightness settings reset

If you want to return the color and brightness settings back to default value, please use following
procedure.

1 Press MENU key to display “Menu”.

Select [BRILL] => [RESET] => [GO], and press ENT key.

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TRUE/REL REL
TIME TRUE
SHAPE
TRAIL LEVEL
CLEAR >
RANGE KEEP
FIRST IMPRESSION
MARK
DITHER

2.18 Remove the heading line/navigation data

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.

For safety reason, the heading line disappears only while the key is pressed. (It is not possible to
keep it removed.)

Continue pressing OFF key for 2sec. All navigation tool data (RR, EBL, VRM, ERBL, PI, [MAP],
such as COAST LINE, NAV LINE, ROUTE, EVENT MKR, and AREA, etc.) will hide.

2.19 Target trail

Other ships trails are displayed by following procedures.
Two display modes, relative display REL and true display TRUE are available.
At the start of trail, “TRAIL” characters at lower left of the display change to yellow. When trail time has
passed, character color turns white.
Note:

• The trail by its nature records and displays past images. The trail does not display right after
transmission is started.
In addition, after the change of [TIME], or after the change of two or more steps in [RANGE], the trail
will disappear, because the recording is reset (erased).

• The trail [TIME] and [REL] or [TRUE] mode can be changed directly at the lower left of the display,
with trackball and ENT key, without using menu function.

1 Press MENU key to display “Menu”.

Select [TRAIL] => [TRUE / REL], and press ENT after making selection.

2 There are additional set up items, [TIME], [SHAPE], [TRAIL LEVEL], [CLEAR], [RANGE KEEP],

[FIRST IMPRESSION], [MARK] and [DITHER].

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Echo

First impression (dark red)

Trail

Echo

Trail

Echo

First impression (dark red)

Trail

Mark

[TIME]: This is to set up the time of the trail to be displayed.
Initial set up time: OFF, 30sec, 1min, 3min, 6min, 12min, 30min, 60min, PERM
Time setting can be changed by [MAINTENANCE] => [STARTUP] => [TIMES ENABLE] menu

operation

[SHAPE]: Seven types of trail shapes available, as shown below.

[TRAIL LEVEL]: This is to set up echo level of trail to be recorded.

“1” records all signal levels returned as a trail.
“15” records only the strongest signal levels as a trail.

[CLEAR]: This is to delete all current trails and restart new trails.

[RANGE KEEP]: “OFF” deletes trails when changing range.

“ON” does not delete trails when changing range.

[FIRST IMPRESSION]: The trail is displayed by dark red color during the setting time, afterwards, will

be blue color.
Setting time: OFF, 30sec, 1min, 3min, 6min, 12min, 30min, 60min

[MARK]: After setting time, the trail color will change to dark red while 1minute.

Setting time: 0 to 1440 min

[DITHER]: The trail echo is displayed with mesh form.

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N N

< Display mode [N UP RM] >

Target 1

Course and speed of a real ship Ships relative trails

Target 2

Two ships on a
collision course

Antenna
position

TRAIL
REL

TRAIL
REL

N

< Display mode [N UP RM] >

Target 1

6min

6min

Prospect of collision after 6min

Antenna
position

TRAIL
REL

N N

< Display mode [N UP RM] >

Target 1

Course and speed of a real ship Trail after the time has passed

Target 2

Time passes

Land

Antenna
position

TRAIL
T

TRAIL
T

< Display mode [N UP RM] >

< Display mode [N UP RM] >

< Display mode [N UP RM] >

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.

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.

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 shown using this 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 shown.

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CURSOR OPPOSITE

2.20 Off Center

This function is used to get larger view in heading direction.

Two ways “OFF CENTER” can be setup.

[CURSOR]: Off-centering to CURSOR direction.

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

1 Press MENU key to display “Menu”.

Select [DISPLAY] => [OFF CENT POINT] and press ENT key after selecting the off center point
“CURSOR” or “OPPOSITE”.

2 Off-centering is executed by pressing OFF CENT key, or move cursor to set value of ON or OFF

of [OFF CENT] at the upper left part of the display, and press ENT key.

3 The difference of [CURSOR] and [OPPOSITE] are as follows.

Note: When CCRP is selected for the reference positon, there is possibility that CCRP is located

outside of 90% echo image area at OFF CENTER function in short range.
In this case, alarm message of “Cannot use the CCRP” will appear at lower right of the display,
and the reference position is automatically changed to ANT position.

Refer to 2.33 Reference position and Display center.

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PICTURE MODE

PROCESS

D e d icated function name EXPANSION

IR

F1

>

VID

F2

>

OFF NOISE REJ

F3

>

ECHO > SART TRAIL T/REL

F4

>

TRAIL > TRAIL TIME

F5

>

DISPLAY > STAB MODE TRAIL RESET

F6

>

ALARM > TM RESET
TARGET > C UP RESET
NAV TOOL > FERRY MODE ECHO ALARM
MAP > ECHO ALARM EDIT
SYSTEM > VECT T/REL MAP AREA ALARM

VECT TIME GUARD ZONE
CPA/TCPA GUARD ZONE EDIT

PAST POSN T/REL NAV LINE CROSS

PAST POSN TIME

AUTO ACQ AREA

AUTO ACQ AREA EDIT

OS PAST TRK RESET

AIS

TT DELETE

TT ALL DELETE

ACQ

TT REF ACQ RR

ANCH TRUE BRG T/REL

ANCH REL GUARD LINE

SHIP OUTLINE

OWN TRACK STERN LINE

OS PAST TRK REC BARGE ICON

TARGET TRACK

MAP DISP

CHART

EVENT CURSOR

EVENT OWN

TLL OUT

TIME

ASSISTANT DISP

TGT LIST SORT

VECT TI ME

2.21 Function key usage

For quick function access, there are six dedicated function keys provided on this radar (“F1”, “F2”, “F3”,
“F4”, “F5” and “F6”).

You can switch to a pre-specified function by pressing each key.

1 Press MENU key to display “Menu”.

Select [MAINTENANCE] => [STARTUP] => [FUNCTION KEY] => [F1] key => press ENT key and
after selecting the setup value.

2 Follow procedure (1) to setup keys [F2], [F3], [F4], [F5] and [F6] by selecting each item and press

ENT key.

3 Another way to setup each function key is to press and hold desired key until menu selection

shows up on the right of the display. Using trackball and ENT key make a selection and save to
designated function key.

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2.22 Set picture mode

It is necessary to make adjustment to the radar picture as environment and sea condition changes. The

Picture mode can quickly change for different settings, [PROCESS], [EXPANSION], [IR] and [VID],

depending on the situation. You can change these setting items individually, and these changes are

stored in internal memory.

1 Press MENU key to display “Menu”.

Select [ECHO] => [PICTURE MODE] => press ENT key after making your selection.

The setting value can be selected from “PICTURE1, PICTURE2, PICTURE3, NEAR, FAR,

HARBOR, ROUGH SEA, RAIN or PURE”.

Initial setting of [PICTURE MODE]:

PROCESS EXPANSION IR VID
PICTURE1: OFF OFF 1 3
PICTURE2: C2 2 OFF 2
PICTURE3: C2 1 OFF 1
NEAR: OFF OFF 1 1
FAR: C1 2 OFF 4
HARBOR: C1 1 2 1
ROUGH SEA: C2 OFF 1 1
RAIN: C1 OFF 1 1
PURE: OFF OFF OFF 1

PROCESS: Refer to 2.23 Echo process
EXPANSION: Refer to 2.24 Echo expansion
IR: Refer to 2.25 Interference rejection (IR)
VID: Refer to 2.26 Video contrast

[PICTURE MODE] can be changed directly at the upper right of the display using trackball.

Note:

• When [ECHO] => [PICTURE ENABLE] menu is set to “OFF”, it is possible to hide the unnecessary

PICTURE MODE. But [PICTURE1] cannot be set to “OFF”.

• To return to initial setting, select [ECHO] => [PICTURE RESET] => [GO], and press ENT key.

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2.23 Echo process

Echo process mode is used to suppress of sea, rain and snow clutter and the target appears on the
display. Echo process mode is used correlation method. Five types of C1, C2, C3, A1 and A2 are
available.
[PROCESS] mode can be changed directly at the upper right of the display using trackball.

1 Move the cursor to OFF、C1、C2、C3、A1 or A2 of [PROCESS] at the upper right part of the display.

Press ENT key repeatedly until the desired choice appears.

Correlation image echo process

Process mode: C1, C2, C3
The effect to suppress the sea and rain/snow clutter will be stronger in the order of C1 < C2 < C3.

Process mode: A1, A2
A2 mode will display the hardly distinguished target of video signal for a long time than A1 mode.

Note:

• For confirmation of an image that may be hidden between the waves and the image of a fast ship that
appears at a different position for each scan, the image may be displayed weaker than the actual one.
Therefore, when fast moving target on the display, select [PROCESS] OFF.

• For operation of GAIN, SEA and RAIN, it may take some time before it becomes effective. Take

enough time for the operation, or operate again after [PROCESS] has been once off.

• Echo process mode requires heading signal and speed signal, echo process mode turns into OFF if

heading signal or speed signal is unavailable.

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EXP:OFF EXP:2

EXP:1

EXP:3

EXP:4

2.24 Echo expansion

This function is to enlarge an image in the direction of distance/bearing.
Small ships and remote targets can be enlarged to be easier to see.
[EXPANSION] can be changed directly at the upper right of the display.

1 Move the cursor to set value window of OFF, 1, 2, 3 or 4 of [EXPANSION] at the upper right part

of the display.
Press ENT key repeatedly until the desired choice appears.

Note: The setting value can be selected from “OFF, 1, 2, 3 and 4” and the larger value applies stronger

enhance effect.

Note: 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 sometimes be seen as a single target. Pay
attention to that.

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2.25 Interference rejection (IR)

This feature is used to reject interference from other radars.
Radar transmissions on 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 shape
or like the spokes of a wheel in shape. This function can reduce interference effect.

[IR] can be changed directly at the upper right of the display.
[IR] is also effective to reduce second echo phenomenon.

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

Press ENT key repeatedly until desired value appears.

Note:

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

interference rejection effect.

• Too much removal effect may also remove small targets. Pay attention to that.

2.26 Video contrast

This is a function to change the relation between the strength of returned echo and their display
gradation.

At VID 1, the difference of signals strength between strong echo and weak echo becomes larger. As
the numerical figure becomes larger in VID 2, VID 3, VID 4, and VID 5 the difference in signal strength
becomes smaller.

[VID] can be changed directly at the upper right of the display.

1 Move cursor to 1, 2, 3, 4 or 5 of [VID] at the upper right part of the display.

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 clutter which may blend together with small ships and buoys.

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If set at 5, echo colors from 1 to 5 will not be
displayed.

2.27 Noise rejection

This radar is equipped with a function that is capable to remove various signals picked up by the radar
such as white noise, and display clean picture.

1 Press MENU key to display “Menu”.

Select [ECHO] => [NOISE REJ] => select [OFF], [1] or [2], and press ENT key.

Noise rejection of [2] setting works more effective than [1].

2.28 Echo color rejection

This radar has a function to remove a color selected by menu operation.
This effect is to show the strong signal image clearly and to delete the unwanted signal such as noise.

1 Press MENU key to display “Menu”.

Select [ECHO] => [COLOR REJ] => select [OFF] or [1 to 14], and press ENT key.

Selection value 1: Lowest signal level color
Selection value 14: Highest signal level color

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6kW / 12kW

Range

0.125 S1 S1

0.25 S1 S2 S1 S2

0.5 S1 S2 M1 S1 S2 M1

0.75 S1 S2 M1 M2 S1 S2 M1 M2

1.5 S1 S2 M1 M2 M3 S1 S2 M1 M2 M3
3 S2 M1 M2 M3 L1 L2 S2 M1 M2 M3 L1 L2
6 M2 M3 L1 L2 M2 M3 L1 L2

12 L1 L2 L1 L2
24 L2 L2
32 L2 L2
48 L2 L2
64 L3 L3

SP mode

LP mode

25kW

Range

0.125 S1 S1

0.25 S1 S2 S1 S2

0.5 S1 S2 M1 S1 S2 M1

0.75 S1 S2 M1 M2 S1 S2 M1 M2

1.5 S1 S2 M1 M2 M3 S1 S2 M1 M2 M3
3 S2 M1 M2 M3 L1 L2 S2 M1 M2 M3 L1 L2
6 M2 M3 L1 L2 M2 M3 L1 L2

12 L1 L2 L1 L2
24 L2 L2
48 L2 L2
96 L3 L3

SP mode

LP mode

S1

(Short pulse 1)

S2

(Short pulse 2)

M1

(Medium pulse 1)

M2

(Medium pulse 2)

M3

(Medium pulse 3)

L1

(Long pulse 1)

L2

(Long pulse 2)

L3

(Long pulse 3)

1.0 μs

500 Hz

1.2 μs

470 Hz

1.0 μs

450 Hz

1.2 μs

400 Hz

0.5μs

1000 Hz

0.6 μs

800 Hz

0.7 μs

700 Hz

0.8 μs

600 Hz

0.25 μs

2000 Hz

0.3 μs

1300 Hz

0.25 μs

2000 Hz

0.3 μs

1300 Hz

0.08 μs

2500 Hz

0.08 μs

2000 Hz

0.08 μs

2500 Hz

0.08 μs

2000 Hz

Indication

6kW / 12kW

25kW

Pulse width

PRF

Pulse width

PRF

2.29 Pulse width

This radar can change pulse width of the transmission from 0.25NM to 12NM range scale.
SP and LP pulse width can be set separately.
The pulse width in use is displayed at the upper left of the display, using the indications shown in the
table below.

1 Press MENU key to display “Menu”.

Select [ECHO] => [PULSE WIDTH] => select range scale (0.25 to 12 NM) => select [SP] or [LP]
=> set pulse width, and press ENT key.

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2.30 Receiving Radar Beacons, SART and Radar Enhancer

The X-band radar system is required to be capable of receiving signals emitted from a Radar Beacon,
SART (Search and Rescue Transponder) and Radar enhancer. To receive those signals by the radar
system, use the following procedures.

1 Press MENU key to display “Menu”.

Select [ECHO] => [SART] => [ON], and press ENT key.

2 Radar functions are set with following settings.

Range scale: 12 NM
Pulse width: L2
PROCESS: OFF
Interference Rejection: OFF

3 In case the radar picture is obscured with too many signals, reduce gain for better observation.
4 When own ship approaches the transmitting Radar Beacon or SART, the echoes will become

blurred in an arc. For better observation of those signals, adjust the Gain, SEA and RAIN controls,
as appropriate.

5 [ECHO] => [SART] => [OFF], and press ENT key, the setting of above 3 is restored.

About SART

According to the GMDSS (Global Maritime Distress and Safety Systems) requirement, the IMO/SOLAS
class ships must be equipped with a SART. When a ship is in distress, a signal will be automatically
emitted from the SART so that other ships and/or aircrafts can identify its location. When your ship
equipped with a X-band radar comes within 8 NM of a ship in distress, the SART picks up the radar
signal and responds to it. The signal consists of 12 sweeps and is emitted in the frequency range of 9.2
GHz through to 9.5 GHz. The SART has two sweep times that switch from slow sweep (7.5μs) to fast
sweep (0.4μs) and vice versa, according to the distance. When the radar receives this signal, a line of
12 dots, which is equally spaced at about 0.64 NM, appears on the display. The nearest blip of the
SART indicates the location of the ship in distress. When your ship comes within 1 NM to the SART, a
fast sweep signal is displayed on the radar and a thin line connects the 12 blips.

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Slow sw eep signal

Fast sweep signal

Beam w idth of the
radar signal received

SART position

SART position

1 nm or more beyond
the SART position

Within 1 nm of SA RT position

9.5GHz

9.2GHz

7.5µs sw eep time
95µs sweep time

Slow sw eep signalFast sweep signal

Sweep start

1NM or more beyond

Within 1NM SART position

Actual location of the ship carrying the SART

If your ship is located at 1 NM or more away from the SART, the position at which the first echo is
displayed is 0.64 NM behind the actual SART position when the 12 SART echoes are identified. If your
ship comes within 1 NM from the SART, the fast sweep signal is indicated. The position of this echo is
displayed 150 m beyond the actual SART position.

The SART signal presentation and its signal timing

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INDEPENDENT MASTER

INDEPENDENT MASTER Remote cable INDEPENDENT SLAVE

CW-561-**M

2.31 Inter-switch

Inter-switch is a way to setup two radars to be connected together.
Note: If either radar fails while two radars are in use, then set the [INTER-SWITCH] menu of the

working radar to [INDEPENDENT MASTER] and use it independently.
Refer to “3.4.10 Cable connection for inter-switch” of Installation manual.

NOTE: [INTER-SWITCH] menu cannot be used while transmitting.

1 Press MENU key to display “Menu”.

Select [SYSTEM] => [INTER-SWITCH] => select [INTER-SWITCH] mode*, and press

ENT key.

* Available choices: INDEPENDENT MASTER, INDEPENDENT SLAVE, DUAL MASTER,

DUAL SLAVE, CROSS, MONITOR

INDEPENDENT MASTER: Connection status where one antenna is connected to one radar.
INDEPENDENT SLAVE: Connection status where the dedicated cable is connected to the

above-mentioned INDEPENDENT (MASTER), and the image of antenna of
INDEPENDENT (MASTER) is displayed on (SLAVE) radar.
The SLAVE display unit cannot control the antenna unit. The monitor (SLAVE
display unit) will display its range in accordance with the MASTER one.

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Remote cable
CW-561-**M

DUAL MASTER Control cable DUAL SLAVE

CW-373-**M

Data cable

Remote cable
CW-561-**M

Control cable

CROSS CW-373-**M

Data cable

DUAL MASTER: Connection topology is the same as the above-mentioned INDEPENDENT

(MASTER) and INDEPENDENT (SLAVE), and the control cable is necessary. By this
way, either radar can control the antenna. The radar to which the antenna is
connected is DUAL (MASTER).

DUAL SLAVE: The radar to which the antenna is not connected is DUAL (SLAVE).

CROSS: In this status, there are two radars to which each antenna is connected. In this status, the

antenna that is not connected to its own radar is used.

MONITOR: In this status, the antenna is not connected, and a simulator is connected and used.

Note: When you use inter-switch mode at first time, please set Heading (HL OFFSET), TX DELAY and

ANT CABLE adjustment of each antenna. (Refer to 4.1.2, 4.1.3 and 4.1.5 of Installation manual)
These setting data are memorized in non-volatile memory, and applied automatically when each
antenna is selected.

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Bearing
Distance

Latitude
Longitude

ENT key

TT - xx

312.5

o

8.3kn

etc.

2.32 Cursor data

Cursor data is displayed in distance and bearing at lower right of the display. In addition, it can also be
displayed in latitude and longitude position.

CURSOR setting menu

1 Press MENU key to display “Menu”.
2 Select [NAV TOOL] => [CURSOR] =>

CURSOR SHAPE: Set up shape of cursor.

CURSOR:

NOT OPERATION: ON/OFF of the cursor indication.

ON: The cursor shape and data are always indicated on the display.
OFF: The cursor shape and date will be disappeared after 30 sec.

from last cursor operation.

POSN DISP: ON/OFF of the latitude and longitude position display.

CURSOR HUP MOVE: When HUP mode is used, OFF always remains at the fixed position.

ON links a bearing changes and moves.

INFO: ON/OFF of the TT, AIS and MAP information data display selected by cursor and ENT key.
ON: TT, AIS and MAP information data will be displayed near cursor during about 15 sec.

after these data is selected.

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2.33 Reference position and Display center

Reference position

The base point for range, bearing, relative course, relative speed, CPA or TCPA, EBL or VRM is named
[Reference position], respectively.
Either CCRP (consistent common reference point) or ANT (antenna position) can be used as the
reference position.
Selection of the reference position is made in CCRP or ANT of [REF] located of the upper left of the
display, with trackball and ENT key.

Display center

The display center positon can be changed to CCRP (consistent common reference point) or ANT
(antenna position) when reference position is CCRP.

1 Press MENU key to display “Menu”

Select [DISPLAY] => [DISPLAY CENTER] => select [ANT] or [CCRP], and press ENT key.

The display center of echo image (PPI) is always ANT position.

When CCRP is selected for the reference position, there is possibility that CCRP is located outside of
90% echo image area in short distance range.
In this case, the reference position is automatically changed to ANT position.

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Ref. position: CCRP
Display center: CCRP

Ref. position: ANT
Display center: CCRP

Ref. position: ANT
Display center: ANT

Ref. position: CCRP
Display center: ANT

Antenna

position mark

Ship

outline
(Refer to 2.35 Setup

own ship outline.)

(Refer to 2.34 Setup
own ship outline.

Antenna position mark ON or OFF

1 Press MENU key to display “Menu”

Select [DISPLAY] => [ANT POSN] => select [ON] or [OFF], and press ENT key.

Note: Antenna position mark is displayed at transmission on condition.

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A

B

C

D

dx

dy

OUTLINE

A 0−511m
B 0−511m

C 0− 63m
D 0− 63m

ANT OFFSET

dx -63− 63m
dy -511 − 511m

CCRP
position

ANT
position

CCRP number (1 to 4)

2.34 Setup own ship outline

Set up own ship outline and antenna position from CCRP (Consistent common reference point).

Setup CCRP number and ship outline

1 Press MENU key to display “Menu”.

Select [NAV TOOL] => [SHIP OUTLINE] => [CCRP] => select CCRP number (1 to 4), and press

ENT key.

2 Select [OS PROFILE] => and after selection.

This setup is to designate ship’s outline and antenna location of CCRP.

To show own ship outline, turn on ship outline menu.

1 Press MENU key to display “Menu”.

Select [NAV TOOL] => [SHIP OUTLINE] => [SHIP OUTLINE] => [ON], and press ENT key.

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If ship's width (C+D) is less than 10m, then even 0.125NM range will not show own ship outline.

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90°

90°

270°

270

°

BOW

90°T

STERN
270°T

FERRY MODE: OFF

FERRY MODE: ON
HDG: 0°
HEADING LINE: DOWN

FERRY MODE: ON
HDG: 180°
HEADING LINE: DOWN

90°

FERRY MODE: ON

HDG: 0°
HEADING LINE: UP

FERRY MODE: ON

HDG: 180°
HEADING LINE: UP

FERRY

FERRY

FERRY

FERRY

Note: HL line shows the direction

that the ship moves.
You can easily change it
when you set ferry mode at
function key.

2.35 FERRY MODE

It is a function to use a river for by coming and going ferry etc.
It becomes effective at H UP, and the letter of the FERRY appears on the screen while using it.

1 Press MENU key to display “Menu”.

Select [DISPLAY] => [FERRY MODE] =>
FERRY MODE: OFF, ON Turn ferry mode on or off
HDG: 0°, 180° Gyro reading has 180 degrees added to it or subtracted from it
HEADING LINE: UP, DOWN Change of the heading line indication up or down

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ALL PPI: OFF

ALL PPI: ON

2.36 Display setup

2.36.1 ALL PPI mode

ALL PPI function is to display radar echo images, trails, maps and c-map chart on all screens
(excluding menu area and own ship’s information area).

1 Press MENU key to display “Menu”.

Select [DISPLAY] => [ALL PPI] => [ON], and press ENT key.

2.36.2 ROTATION MARGIN (H UP, C UP)

This function is to set rotation margin of radar echo images, trails, maps and c-map chart depending on
angle of ship’s bearing.
When the ship’s bearing is changing little by little, the pictures become stable if the set value is larger.
In this case, the direction of the heading line moves according to the change of the bearing. When
bearing exceeds the set value, the pictures rotate to right position, and heading line returns to the origin
position.

1 Press MENU key to display “Menu”.

Select [DISPLAY] => [ROTATION MARGIN] => [VALUE] will show the current setting of the input
value by highlighting the last digit value by the trackball.

2 Turn the TRACKBALL up or down to set the value. Press ENT key to save the set result.

Setting value: 0.0o to 30.0o

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2.36.3 ROTATION SPEED

This function is to set the rotation speed of the radar echo images, trails, maps and c-map chart when
the ship’s bearing has changed.

1 Press MENU key to display “Menu”.

Select [DISPLAY] => [ROTATION SPEED] => select [FAST], [MEDIUM] or [SLOW], and press ENT
key.

Selection value: FAST, MEDIUM, SLOW

2.36.4 LOCATION INFO

This function displays the line from the own ship position to WPT or LAT/LON position, and displays the
mark on that position.

1 Press MENU key to display “Menu”.

Select [DISPLAY] => [LOCATION INFO] => select [OFF], [WPT] or [LAT/LON], and press ENT key.

WPT: It is necessary to input WPT data (RMB, BWC or RTE and WPT) from navigation device.
LAT/LON: The position data of [LOCATION INFO] => [LAT] and [LON] is displayed.

2.36.5 BIRD VIEW

Bird view image is displayed on the assistant display area. Refer to 1.1 Rader display “Assistant
display”.
This function sets the details of the bird view function.

1 Press MENU key to display “Menu”.

Select [DISPLAY] => [BIRD VIEW] => select [VIEW AREA DISP], [VIEW HEIGHT], [VIEW POINT],
[FRAME POINT], [FRAME LEFT/RIGHT] or [EXPANSION].

After adjusting each item with trackball, press ENT key.

VIEW AREA DISP: Set on or off of the indication of the VIEW AREA on the radar display.
This menu will be active when BIRD VIEW display is selected.
VIEW HEIGHT: Set height value. (50 to 500)
VIEW POINT: Set view point value. (50 to 500)
FRAME POINT: Set frame point. (20 to 200)
FRAME LEFT/RIGHT: Set frame position. (-200 to 200)
EXPANSION: Set expansion of the BIRD VIEW image. (ON or OFF)

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Chapter 3 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 true 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.

3.1 Echo alarm

Echo alarm function has two movement modes of [IN] and [OUT].
[IN] mode: When the echo enters a specified fan type alarm area, alarm message will be displayed at
lower right of the display and an alarm will sound.
[OUT] mode: When echoes leave specified fan type alarm area, alarm message will be displayed at
lower right of the display and an alarm will sound.

How to set echo alarm area (Fan type)

1 Press MENU key to display “Menu”.

Select [ALARM] => [ECHO ALARM] => select [IN] or [OUT], and press ENT key.
The color of EBL1, EBL2, VRM1 and VRM2 key’s light turn red.
symbol will be shown at the left of numerical indication of [BRG REL] or [WIDTH] and [RNG] or

[DEPTH] menu.

Blue dotted line of echo alarm area and orange dashed circle line will be displayed on the display.

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Chapter 3 Alarm MDC-7000/7900 Series

3-2

WIDTH

BRG

RNG

DEPTH

VRM knob and EBL
knob are used for
setup.

BRG

ECHOALARM

DEPTH

WIDTH
RNG

118°

2NM

45°

6NM

Blue dotted line of
echo alarm area

Orange dashed
circle line

ECHO ALARM IN

2 Press EBL1 or EBL2 key, and select an item to be set between [BRG REL] 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 echo alarm in
the menu display.

3 When the setting of the echo alarm area is completed, then press ENT key, orange dashed circle

line will disappear, and echo alarm will be active.

4 There are additional items, [ALARM] => [DETECT LEVEL] => select [1 to 15]

It designates echo strength to determine an alarm sound.

1 means lowest signal echo level, 15 means highest signal echo level.
When the level is set too low, noise may cause false alarm.
Note: [DETECT LEVEL] is applied to the map area alarm function of next section.

Note: If the echo alarm area is set in the whole circumference, [WIDTH] needs to be set the 0.0˚

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or 360.0˚.

MDC-7000/7900 Series Chapter 3 Alarm

3-3

x: Block number
(1 to 10)

Press
MENU key

x-1

x-2

x-1

x-2

x-3

x-1

Alarm area

3.2 Map area alarm

Map area alarm function provides alarm display when echo enters or leaves from the MAP AREA.

1 Press MENU key to display “Menu”.

Select [ALARM] => [MAP AREA ALARM] => select [IN] or [OUT], and press ENT key.
[IN] mode: When the echo enters a specified map area, alarm message will be displayed at lower
right of the display and an alarm will sound.
[OUT] mode: When the echo leaves a specified map area, alarm message will be displayed at
lower right of the display and an alarm will sound.

How to edit map area

There are two methods to edit map area. First method is to use cursor, second is to input
latitude/longitude via the menu.
Example: Cursor method

1 Press MENU key to display “Menu”.

Select [ALARM] => [MAP AREA ALARM] => [EDIT] => [CURSOR] => select [1 to 10] => [GO],
and press ENT key.

2 Move cursor to first input position, then press ENT key.

No.1 mark (small circle) is displayed with numerical number on the display, and numerical data
information is displayed in the “AREA INFO” area at right side on the display.
If necessary, Latitude and longitude data can be changed using cursor and ENT key by “AREA
INFO”. Also line color can be changed directly by using cursor by “AREA INFO”. If you want to
delete input data, move cursor to word “DELETE”, then press ENT key.

3 Move cursor to second input position, then press ENT key. No.2 mark is displayed, and a line is

generated from No.1 to No.2.

4 Move cursor to third input position, then press ENT key. No.3 mark is displayed, and a line is

generated from No.2 to No.3 and No.1 to No.3.
You can input up to 100 points. The minimum is three points. When input is completed, press

MENU key, numerical marks on the display will disappear, and map area alarm will be activated.

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3-4

x: Block number
(1 to 10)

(x-4) point will be divided from (x-1, x-3).

x-1

x-2

x-3

x-4

x-1

x-2

x-3

x-4

x-1

x-2

x-3

x-4

x-5

x-6

Press
OFF key

5 The procedures to input plural divided map areas in the memory of same block number are as

follows. (Example)

After input the one map area (from x-1 to x-3), please input the start point of the new map area

(x-4). Press OFF key to divide the start point (x-4) from the first and last point (x-1, x-3).

Repeat operation of clause 3 and 4 mentioned previously (x-5, x-6).

6 There are additional items, [ALARM] => [DETECT LEVEL] => select [1 to 15]

It designates echo strength to determine an alarm sound.

1 means lowest signal echo level, 15 means highest signal echo level.

When the level is set too low, noise may cause false alarm.

Note: [DETECT LEVEL] is applied to the echo alarm function in previous section.

How to move map area

There are two methods to move map area position. First method is to use cursor, second is to input
latitude/longitude via the menu.
Example: Cursor method

1 Press MENU key to display “Menu”.

Select [ALARM] => [MAP AREA ALARM] => [MOVE] => [CURSOR] => select [1 to 10] => [GO],

and press ENT key.

2 Move cursor to the map area mark which you want to move to new positon, then change color or

delete position data.

3 Press ACQ key, middle circle mark will appear on the selected mark position, and numerical data

information is displayed in the “AREA INFO” at right side of the display.

4 Move cursor to new position, then press ENT key. Selected mark positon will move to new

positon.

Latitude and longitude position data can be changed directly by using cursor and ENT key by

“AREA INFO”. Line color can be changed directly by using cursor by “AREA INFO”. If you want to
delete selected data, move cursor to word “DELETE”, then press ENT key.

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MDC-7000/7900 Series Chapter 3 Alarm

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x: Block number
(1 to 10)

x: Block number
(1 to 10)

x-1

x-2

x-3

x-1

x-2

x-3

x-1

x-2

x-3

x-1

x-2

x-3

Cursor

Press

ACQ key.

New position

Press
ENT key.

x-1

x-2

x-3

x-1

x-2

x-3

x-1

x-2

x-3

x-1

x-2

x-4

x-3

Cursor

Press
ACQ key

New
position

Press
ENT key

5 Repeat operation of clause 2 to 4 mentioned previously.

6 When move operation is completed, press MENU key, numerical marks on the display will

disappear, and map area alarm function will be active.

How to add data to map area

There are two methods to add map area alarm position. First method is to use cursor, second is to input
latitude/longitude via the menu.
Example: Cursor method

1 Press MENU key to display “Menu”.

Select [ALARM] => [MAP AREA ALARM] => [ADD] => [CURSOR] => select [1 to 10] => [GO], and
press ENT key.

2 Move cursor on the map area mark before which you want to insert new mark, then change color

or delete position data.

3 Press ACQ key, middle circle mark will appear on the selected mark position, and numerical data

information is displayed in the “AREA INFO” at right side on the display.

4 Move cursor to new position where you want to add point, then press ENT key. New position point

will be inserted on the display.

Selected latitude and longitude position data can be changed directly by using cursor and ENT key

by “AREA INFO”. Line color can change directly using cursor by “AREA INFO”. If you want to
delete selected data, move cursor to word “DELETE”, then press ENT key.

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x: Block number
(1 to 10)

x-1

x-2

x-4

x-3

x-1

x-2

x-4

x-3

x-1

x-2

x-3

Press
ENT key

Cursor

How to delete the data of map area

There are two methods to delete map area alarm position. First method is to delete the point that is
selected by cursor, second is to select the number from the menu.
Example: Cursor method

1 Press MENU key to display “Menu”.

Select [ALARM] => [MAP AREA ALARM] => [DELETE] => [CURSOR] => select [1 to 10] => [GO],

and press ENT key.

2 Move cursor on the map area mark which you want to delete.
3 Press ENT key.

Selected map area position data will delete.

How to clear entire block of map area data

The map area data block can be cleared by using menu operation.

1 Press MENU key to display “Menu”.

Select [ALARM] => [MAP AREA ALARM] => [CLEAR] => [BLOCK NUMBER] => select [1 to 10] =>

[GO], and press ENT key.

Selected map area block will be cleared.

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MDC-7000/7900 Series Chapter 3 Alarm

3-7

BRG

ECHOALARM

DEPTH

WIDTH
RNG

118°

2NM

45°

6NM

VRM knob and EBL
knob are used for
setup.

GZ ON

Blue dashed line of
guard zone alarm area

Orange dashed
circle line

3.3 Guard zone alarm

Guard zone alarm is an alarm system using TT (ARPA) tracked target or an AIS active target signal.
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 alarm is generated.

How to set guard zone alarm

1 Press MENU key to display “Menu”.

Select [ALARM] => [GUARD ZONE] => [ON], and press ENT key.
The color of EBL1, EBL2, VRM1 and VRM2 key’s light turns red.
symbol will be shown at the left of numerical indication of [BRG REL] or [WIDTH] and [RNG] or

[DEPTH] menu.
Blue dashed line of guard zone alarm area and orange dashed circle line will be displayed on the

display.

2 Press EBL1 or EBL2 key, and Select an item to be set between [BRG REL] and [WIDTH] by using

EBL knob.

2 When the setting of the guard zone alarm area is completed, then press ENT key, orange dashed

Note: If the guard zone alarm area is set in the whole circumference, [WIDTH] needs to be set the 0.0˚

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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 guard zone
alarm in the menu display.

circle line will disappear, and guard zone area alarm will be activated.

or 360.0˚.

Chapter 3 Alarm MDC-7000/7900 Series

3-8

x: Block number
(1 to 10)

Press
MENU key

x-1

x-2

x-1

x-2

x-3

x-1

3.4 Nav line cross

Nav line cross function enables to attract attention for safety navigation with alarm display when own
ship crosses the course preliminarily set (by cursor or latitude/longitude input).

1 Press MENU key to display “Menu”.

Select [ALARM] => [NAV LINE CROSS] => [ON], and press ENT key.

Note: When set [NAV LINE CROSS] menu to [OFF], this data will be displayed as line data of map that

looks like coast line.
Refer to 6.4 COAST LINE.
Refer to 6.5 NAV LINE.

How to edit

There are two methods to edit nav line cross alarm. First method is to use cursor, second is to input
latitude/longitude by the menu.
Example: Cursor method

1 Press MENU key to display “Menu”.

Select [ALARM] => [NAV LINE CROSS] => [EDIT] => [CURSOR] => select [1 to 10] => [GO], and
press ENT key.

2 Move cursor to first input position, then press ENT key. No.1 mark (small circle) is displayed with

numerical number on the display, and numerical data information is displayed in the “NAV LINE
INFO” area at right side on the display.

If necessary, latitude and longitude data can be changed using cursor and ENT key by “NAV LINE

INFO” area. Also line color can be changed directly by using cursor and ENT key by “NAV LINE
INFO” area. If you want to delete input data, move cursor to word “DELETE”, then press ENT key.

3 Move cursor to second input position, then press ENT key. No.2 mark is displayed, and a line is

generated from No.1 to No.2.

4 Move cursor to third input position, then press ENT key. No.3 mark is displayed, and a line is

generated from No.2 to No.3.
You can input up to 100 points. The minimum is two points. When input is completed, press MENU
key, numerical marks on the display will disappear, and nav line cross alarm will be activated.

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MDC-7000/7900 Series Chapter 3 Alarm

3-9

x: Block number
(1 to 10)

x: Block number
(1 to 10)

Cursor

Press
ACQ key

x-1

x-2

x-3

x-1

x-2

x-3

x-1

x-2

x-3

x-1

x-2

x-3

Press
ENT key

New position

5 The procedures to input plural divided nav line in the memory of same block number are as follows.

(Example)
After input the one nav line (from x-1 to x-3), please input the start point of the new nav line (x-4).
Press OFF key to divide the start point (x-4) from the last point (x-3).
Repeat operation of clause 3 and 4 mentioned previously (x-5, x-6).

How to move nav line

There are two methods to move nav line cross alarm. First method is to use cursor, second is to input
latitude/longitude by the menu.
Example: Cursor method

1 Press MENU key to display “Menu”.

Select [ALARM] => [NAV LINE CROSS] => [MOVE] => [CURSOR] => select [1 to 10] => [GO],
and press ENT key.

2 Move cursor to the nav line cross mark which you want to move to new positon, then change color

or delete position data.

3 Press ACQ key, medium circle mark will appear on the selected mark position, and numerical data

information will be displayed in the “NAV LINE INFO” area at right side on the display.

4 Move cursor to new position, then press ENT key. Selected mark positon will move to new

positon.

Latitude and longitude position data can be changed directly by using cursor and ENT key by “NAV

LINE INFO” area. Line color can be changed directly by using cursor by “NAV LINE INFO” area. If
you want to delete selected data, move cursor to word “DELETE”, then press ENT key.

5 Repeat operation of clause 2 to 4 mentioned previously.

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Chapter 3 Alarm MDC-7000/7900 Series

3-10

x: Block number
(1 to 10)

Cursor

Press
ACQ key

New position

Press
ENT key

x-1

x-2

x-1

x-2

x-1

x-2

x-1

x-2

x-1

x-2

x-3

6 When move operation is completed, press MENU key, numerical marks on the display will

disappear, and nav line cross alarm will be activated.

How to add

There are two methods to add nav line cross alarm position. First method is to use cursor, second is to
input latitude/longitude by the menu.
Example: Cursor method

1 Press MENU key to display “Menu”.

Select [ALARM] => [NAV LINE CROSS] => [ADD] => [CURSOR] => select [1 to 10] => [GO], and
press ENT key.

2 Move cursor to the nav line cross mark before which you want to add new mark, then change color

or delete position data.

3 Press ACQ key, medium circle mark will appear on the selected mark position, and numerical data

information is displayed in the “NAV LINE INFO” area at right side on the display.

4 Move cursor to new additional position, then press ENT key. New position point will be inserted on

the display.

Selected latitude and longitude position data can be changed directly using cursor and ENT key

via “NAV LINE INFO” area. Line color can be changed directly using cursor via “NAV LINE INFO”
area. If you want to delete selected data, move cursor to word “DELETE”, then press ENT key.

5 Repeat operation of clause 2 to 4 mentioned previously.

6 When add operation is completed, press MENU key, numerical marks on the display will

disappear, and nav line cross alarm will be activated.

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