Koden MDC-900 Series Operation Manual

MDC-900 Series Document Revision History

MDC-900 Series Operation Manual

Doc No. 0093142132

Document Revision History

No. Doc. No / Rev. No. Reviced Date

(Y/M/D)
0 0093142132-00 2008/07/18 First edition
1 0093142132-01 2008/11/10 Total revision
2 0093142132-02 2009/05/22 Chapter 5
3 0093142132-03 2010/02/18 Total revision
4 0093142132-04 2011/04/11 Total revision
5 0093142132-05 2011/09/30 Chapter 2, Chapter 3, Chapter 6
6
7
8
9

10

Revised Content

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.

© 2008-2011 Koden Electronics Co., Ltd. All rights reserved.
No part of this publication may be reproduced, transmitted, translated in any from by any means
without the written permission of Koden Electronics Co., Ltd. The technical descriptions contained
in this publication are subject to change without notice. Koden assumes no responsibility for any
errors, incidentals or consequential damages caused by misinterpretation of the descriptions
contained in this publication.

0093142132-05 i

Important Notices MDC-900 Series

Important Notices

 The re-use and transcription of Operation Manual (hereafter called this manual) needs permission

of our company. Our company prohibits the un-author ized re-use and transcription.

 If this manual is lost or damaged, consult our dealer or our company.
 The specification of our products and the content in this manual are subject to changed without

notice.

 In the explanation of this manual, the content displayed on the menu of product may be different,

depending on the situation. The keys and menus in the illustration may differ in physical font and
shape. And some parts may be omitted.

 Our company is not liable for damage and trouble arising from misunderstanding of the content

described in this manual.

 Our company is not liable for earthquake, lightning, fire for which our company is not responsible,

action by third party, other accident, customer’s unintended error/abuse and damage caused by
the use under other abnormal condition.

 Our company is not liable for damage of accompaniment (change/loss of memorized content, loss

of business profit, stop of business) arising from use or failure of our product.

 If the stored data is changed or lost, irrespective of any cause of trouble and damage, our

company is not liable for it.

 Our company is not liable for any damage arising from malfunction caused by combination of such

software and connected equipment that did not involve our company.

ii 0093142132-05

MDC-900 Series For Your Safe Operation

For Your Safe Operation

Symbol used in this Operation Manual

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

Symbol Meaning

Mark for warning

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

Mark for danger high voltage

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

IMPORTANT

caused by electric shock when not dealing with it correctly.

Mark for caution

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

Mark for prohibition

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

Mark for important matters

This mark denotes that there is a possibility that data loss may interfere
the operation or that the expected result may not be obtained when the
radar is not dealt correctly.

Mark for reference

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

0093142132-05 iii

For Your Safe Operation MDC-900 Series

Caution Item on Equipment

Caution on a high voltage inside.

A high voltage, which may risk your life, is used. This high voltage
remains in the circuit after you have powered off switch. To prevent
touching the high voltage circuit inadvertently, the protective cover is
provided to the high voltage circuit and the high voltage caution label is
affixed. Ensure to power off switch for your safety and discharge the
electricity remaining in the capacitor before starting to check. An
engineer authorized by our company should inspect and maintain the
circuit.

Be sure to switch off the power in the boat.

If the power switch is inadvertently powered on during work, you will be
electrified. To prevent such accident from occurring, ensure to switch off
the power in the boat and the power of equipment. Furthermore, it is
safer to hang the caution tag with description of [Under Work] near the
power switch of equipment.

Caution on dust

Inhaling dust may cause A respiratory disease. When cleaning the inside
of equipment, be careful not to inhale dust. Wearing a safety mask is
recommended.

Caution on location of equipment

Do not install the equipment where it is excessively damp and suffers
from excessive water drops.

Caution on static electricity

The static electricity may be generated from the carpet on the floor i n the
cabin or clothes made of synthetic fiber. The static electricity may
destroy the electronic parts on the circuit board. Handle the circuit board,
taking the suitable anti-static mea su res.

iv 0093142132-05

MDC-900 Series For Your Safe Operation

Caution Item on Handling

Caution on the rotating aerial

The radar antenna may start to rotate without notice. Please

Caution

stand clear from the antenna for your safety.

Caution on electromagnetic disturbance

The operating antenna & scanner unit radiates high-energy electromagnetic
wave. It may cause harmful effect for human body due to its continuous
irradiation. As International regulation says, electromagnetic waves less than

2

100 watt/m
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
MDC-921 2kW/ 1.2 feet (Radome antenna)
MDC-941 4kW/ 2 feet (Radome antenna)
MDC-940

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

Xmit power/Antenna length

4kW/ 3 feet (Open antenna)
4kW/ 4 feet (Open antenna)

100W/m2 10W/m2

0.4 m 1.27 m

0.8 m 2.54 m

0.9 m 2.85 m

1.01 m 3.2 m

0093142132-05 v

For Your Safe Operation MDC-900 Series

Do not disassemble or modify. It may lead to trouble, fire, smoking or
electric shock. In case of trouble, contact our dealer or our company.

In case of smoke or fire, switch off the power in the boat and the power
of equipment. It may cause fire, electric shock or damage.

Caution on the remaining high voltage.
A high voltage may remain in the capacitor for several minutes after
you have powered off. Before inspecting inside, wait at least 5 minutes
after powering off or discharging the remaining electricity in an
appropriate manner. Then, start the work.
The information displayed in this unit is not provided directly for your
navigation. For your navigation, be sure to see the specified material.

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

Caution on Display Unit

Do not push or scrub the surface of the display unit with a pointed tip of a
hard matter (tool, tip of a pen, etc) Scars could be made.

Do not press the surface of the display unit. Interference stripes or display
abnormality could occurs.

Disposal of this radar

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

vi 0093142132-05

MDC-900 Series Contents

Contents

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

Important Notices.....................................ii

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

Contents.................................................vii

Introduction ..............................................x

System Configuration..............................xi

Configuration of Equipment....................xii

Chapter 1 Basic Operation......................1-1

1.1 How to read the radar screen .... 1-3

1.2 How to use the keys................... 1-4

1.3 Power On/Off............................. 1-6

Power On................................... 1-6

Power Off................................... 1-6

Language Selection at Initial

Start-up...................................... 1-6

1.4 Brilliance Adjustment..................1-6

Brightness Adjustment of LCD...1-6

1.12 Measuring the distance and

bearing between two points.....1-10

Measuring the distance and

bearing between two points.....1-10

1.13 Camera Display .......................1-10

How to connect a CCD

camera..................................... 1-10

How to display the video of a

CCD camera............................1-10

Chapter 2 How to use the menu.............2-1

2.1 How to operate the menu .......... 2-1

Display/Non-display of Menu..... 2-1

Operation of Menu.....................2-1

2.2 FTC Adjustment.........................2-2

2.3 Setting of Display Mode............. 2-2

H UP (Head Up)......................... 2-2

N UP (North Up).........................2-3

Brightness Adjustment of

Panel..........................................1-6

1.5 Transmission..............................1-6

Start of Transmission.................1-6

Stop of Transmission .................1-6

1.6 Switch-over of Range ................1-7

Change of Range....................... 1-7

Change of Sub-screen Range...1-7

1.7 Gain Adjustment.........................1-7

Gain Adjustment.........................1-7

Adjustment of Sub-screen

Gain ...........................................1-7

1.8 STC Adjustment.........................1-8

STC Adjustment.........................1-8

1.9 Use of [F1] and [F2] keys...........1-8

How to use [F1] and [F2] keys...1-8

1.10 Delete of Heading Line.............. 1-9

C UP (Course Up)...................... 2-3

WPT UP (W aypoint Up).............2-3

Relative Motion (RM) and Tru e

Motion (TM)................................2-3

True Motion Reset .....................2-5

2.4 Display Select ............................2-5

PPI Display ................................2-5

PPI/PPI Display..........................2-5

Note on PPI/PPI Display............2-6

PPI/NAV Display........................ 2-6

Note on PPI/NAV Display...........2-6

2.5 Setting of OFF CENTER............2-6

2.6 Setting of Enhance

(Enlarged Target) .......................2-6

2.7 Setting of Signal Process...........2-6

2.8 Setting of Pulse Width................2-7

2.9 Trailing....................................... 2-7

Delete of Heading Line.............. 1-9

1.11 Use of Crosshair Cursor ............ 1-9

0093142132-05 vii

Relative Display (R)...................2-7

True Display (T).........................2-8

Contents MDC-900 Series

2.10 EBL.............................................2-8

2.11 VRM ...........................................2-8

2.12 Display Color..............................2-9

2.13 Crosshair Cursor Shape.............2-9

2.14 PI (Parallel Index Line)...............2-9

2.15 Bearing Mode.............................2-9

2.16 Vector.........................................2-9

2.17 Alarm........................................2-10

IN Mode....................................2-10

OUT Mode................................2-10

Setting of Alarm Range............2-10

2.18 Sleep........................................2-10

Operation during executing the

sleep.........................................2-10

2.19 AIS............................................2-11

Setting of Symbol Display of

AIS............................................2-11

Speed Unit..................................3-1

Temperature Unit........................3-1

Depth Unit..................................3-1

Position Display..........................3-1

WPT Display...............................3-2

Rotation Speed...........................3-2

ALL PPI......................................3-2

Guide..........................................3-2

Buzzer........................................3-2

Motor Speed...............................3-2

N UP/S UP.................................3-2

Crosshair Cursor Display...........3-2

Radar Setting Display ................3-2

Menu Operation .........................3-2

3.3 Setting of Adjustment Items.......3-2

Bearing Setting...........................3-3

TX Delay Adjustment..................3-3

Setting of Detailed Information of

Designated Symbol Display.....2-11

Types and Meanings of AIS

Symbols....................................2-11

2.20 ATA...........................................2-12

Automatic Acquisition...............2-12

Manual Acquisition...................2-12

Target Level..............................2-12

Target Delete............................2-13

Number of Acquisition..............2-13

Information Display ..................2-13

Types and Meanings of ATA

Symbols....................................2-14

Chapter 3 How to use the system

menu ..................................... 3-1

3.1 Display of System Menu ............3-1

Display the System Menu ..........3-1

Return to the normal menu ........3-1

3.2 Setting of Assist Items................3-1

Range Rings ..............................3-1

Range Unit .................................3-1

MBS............................................3-3

STC Curve .................................3-4

Tune Select................................3-5

Automatic Tuning.......................3-5

Manual Tune Adjustment............3-5

Pulse Width................................3-5

Interference Rejection................3-6

Echo Color Divide ......................3-6

Signal Select..............................3-6

Field of Angle.............................3-6

3.4 NMEA.........................................3-7

KGC-1 Setting (Connection with

the KODEN GPS compass).......3-7

3.5 Preset.........................................3-7

F1/F2 Key Set............................3-7

Select Range..............................3-7

Echo Color Set...........................3-7

Trail Color Set............................3-7

Display Color Set .......................3-7

Language Select........................3-7

NAV Display Select ....................3-7

Camera Position Crrection.........3-7

viii 0093142132-05

MDC-900 Series Contents

3.6 Maintenance ..............................3-8

Display Unit................................3-8

Antenna......................................3-8

Panel Test ..................................3-8

LCD Test ....................................3-8

Operation Hours Reset..............3-8

TX Hours Reset .........................3-8

ALL Reset..................................3-8

System Program Renewal ......... 3-8

Chapter 4 Maintenance ...........................4-1

4.1 Maintenance ..............................4-1

Monthly Inspection.....................4-1

Yearly Inspection........................ 4-2

4.2 Fuse Replacement.....................4-3

4.3 Consumables............................. 4-3

4.4 Trouble Diagnosis......................4-3

Information required for

Cable connection to the Display

unit ........................................... 5-14

Pin Assignment of Rear

Connector ................................5-15

Connection of DC power

cable ........................................5-16

Grounding................................5-16

Connection with the AIS

Receiver .................................5-16

Connection with the navigation

equipment................................5-17

Connection of External Buzzer

and External Monitor................5-17

Connection of CCD Camera....5-18

5.6 List of Input/Output Sentence .. 5-18

Input Sentence.........................5-18

Output Sentence......................5-18

requesting a repair.....................4-3

Error Display..............................4-3

Self-diagnostic Function ............4-4

Inspection at Each Location.......4-5

Chapter 5 Equipment..............................5-1

5.1 Antenna Installation ...................5-1

Determining the location of

the installation............................ 5-1

How to shift the antenna from an

obstacle...................................... 5-2

Installation of Antenna................5-3

Installation of Radome Antenna.5-3

Setting of Open Antenna............5-4

Installation of Antenna................5-5

Cable Connection ...................... 5-6

5.2 Mutual Connection Diagram ....5-10

5.3 Display Unit Installation............ 5-11

Chapter 6 Attached Table.......................6-1

6.1 Menu Configuration.................... 6-1

6.2 Specifications.............................6-3

6.3 External View.............................6-5

Chapter 7 Principle of radar system....... 7-1

7.1 What is the radar system?.........7-1

Side lobe.................................... 7-1

Beam width................................7-1

7.2 Characteristics of radar radio

wave........................................... 7-2

Target with less reflection .......... 7-2

Radar shadow............................7-2

False image ...............................7-2

7.3 Radar interference ..................... 7-4

Desktop Installation.................. 5-11

Flush-mount Installation........... 5-12

5.4 Adjustment after Installation.....5-13

5.5 Wiring.......................................5-14

0093142132-05 ix

Introduction MDC-900 Series

Introduction

Thank for your purchase of KODEN color LCD radar MDC-900 Series.
The quality and endurance of a unit is well considered. For the best performance, read this Operation

Manual and operate a unit correctly and safely.
The main features of this unit are as follows.

 The high performance radar equipped with 8.4 inch display can be used for professional use.
 In the true trail function, as moving targets such a s other ships are displayed being tailed and

stationary targets such as land are displayed being fixed, the moving t argets and fixed targets can
be easily discriminated.

 Two screen images of different ranges can be displayed. If you set a near distance screen and a far

distance, you can navigate properly and grasp a situation.

 The automatic tracking function (ATA) is provided. The maximum 50 targets can be tracked. The

current motion of other ships can be grasped in a vector and numeral so that it helps your ship to
navigate safely. (Optional)

 By connecting the AIS receiver, the gathered information such a s name, heading and speed of a

ship can be displayed. (Optional interface)

 With the adoption of a specific filter (AR coat), an image can be seen clearly, refusing sunshine. The

countermeasures against the reflection on the LCD screen and dew are provid ed.

 The RGB output for an external monitor is provided as standard equipment. The use of the external

monitor enables you to observe easily the radar screen at a location which is remote from a main
unit. (External monitor: Prepared by a customer)

 A video from a CCD camera can be displayed. The inside of a ship can be observed by a camera

installed at the engine room helps your ship navigate safely. (CCD camera: Prepared by a customer)

 With the adoption of the gain/STC rotary knob, the operability is enhanced.
 When flush-mounted, a unit can be installed or removed from the front of the unit.

x 0093142132-05

MDC-900 Series System Configuration

System Configuration

Connection Diagram

Antenna - scanner unit

AIS receiver

Slave Display

Remote Display

MRD- XXX

RB714A/RB715A/RB716A with RW701A-03/04

J5

POWER

J1

J2 J6

Display Unit MRD-103

J3 J4

Navigation Equipment Navigation Equipment

KGC-1 or
Navigation equipment

RANGE

GAIN

BRILL

10.8 31.2VDC

J7

E

N

T

U

N

E

M

CCD camera

External Monitor
External Buzzer

TX

Be sure to connect the KGC-1 to J4.

: Standard product
: Optional product
: Product prepared by a user

0093142132-05 xi

Configuration of Equipment MDC-900 Series

Configuration of Equipment

Standard Equipment Configuration List

No. Name of item Type Remarks Weight/Length Quantity

1 Display unit

MRD-103 With mounting

bracket and
knobs

3.7kg 1

2 Hard cover

3 DC power cable

4 Fuse

5 CCD camera cable

6 Antenna-scanner unit See next page. With cable 1
7 Operation Manual English 1
8 Quick Reference English 1

E57MB11060 0.25kg 1

CW-265-2M 3-pin water

resistant
connector
and one end

F-1065-8A
Cylinder (ø6.4x30)

CW-405-0.3M 0.3m 1

plain
Normal fusion

type for main
power

2m 1

1

xii 0093142132-05

MDC-900 Series Configuration of Equipment

Types of Antenna-scanner unit

No. Type

1 RB714A

2 RB715A

Transmitting

Power

2kW Radome Interconnecting

4kW Radome Interconnecting

Shape Remarks Weight/Length

cable, 10m*,
242J160680A-10M

cable, 10m*,
242J158055A-10M

6kg / 1.2ft

10kg / 2ft

4kW Open Interconnecting

cable, 10m*,
242J159098A-10M

* Cables of 15m, 20m and 30m are available. (Optional)

21kg / 3ft 3 RB716A with RW701A-03/04

22kg / 4ft

Optional List

No. Item Name Type Remarks Cable Length

1 GPS compass KGC-1 GPS/Heading

measuring
2 AIS interface board AIS-110 100 targets
3 Cable for AIS receiver CW-376-5M With 6-pin waterproof

connector and one

end plain.
4 ATA board MRE-340
5 Cables for external

monitor/external buzzer

6 Cable for slave display CW-561-10M With 12-pin water

7 Power rectifier PS-010 With 2 pieces of 5A
8 AC power cable VV-2D8-3M Both ends plain. 3m

CW-576-0.5M 10-pin water resistant

connector and

D-SUB connector

(female) + Alarm out

cable

resistant connectors

at both ends.

fuse

CW-373-5M 6-pin water resistant

connectors at both

ends

CW-376-5M With 6-pin waterproof

connector and one

end plain.

5m

0.5m

10ｍ

5m 9 Cable for navigation cable

5m

0093142132-05 xiii

Chapter 1 Basic Operation MDC-900 Series

Chapter 1 Basic Operation

The basic operation of this unit is as follows. For detailed explanation, refer to each item in this manual.

1.

1. Press the [BRILL] to turn

on the power.

When [ST'BY] appears, press

2.

the [STBY/TX] key to start
the transmission.

1.3 Power On/Off

5. Rotate the [STC] knob to adjust the sea surface reflection suppression effect.

Rotate the [STC] knob to adjust the sea surface reflection suppression effect.

1.5 Transmission

E

N

T

U

N

E

M

RANGE

GAIN

STBY

TX

BRILL

The suppression effect becomes strong when rotating clockwise the knob and
becomes weak when rotating counterclockwise the knob.

・This function reduces the gain at a near distance. If you turn clockwise the knob

too much, desired objects may disappear.Adjust properly to meet the weather
condition.

Example of STC adjustment :

: The suppression
is too weak.

The reflection from sea
surface is displayed.

1.8 STC adjustment

: Optimum
suppression.

The desired objects
are displayed.

: The suppression
is too strong.

Some objects are
not displayed.

1-1 0093142132-05

MDC-900 Series Chapter 1 Basic Operation

Change the observation range with the [- RANGE +] key.

3.

When pressing the [+] key, the observation range expands.
When pressing the [-] key, the enlarged surrounding around own ship can be observed.
To make it easier to observe the range you desire, change the range.

Example of display :

Long range : Far distance Middle range : Middle distance

Short range : Near distance

Objects at far distance
can be covered.

1.6 Switch-over of range

Adjust the gain by rotating the [GAIN] knob.

4.

The gain becomes high when rotating clockwise the knob and becomes low when rotating
counterclockwise the knob.

When the observation range is narrow or targets are crowded, reduce the gain so that

࡮

targets can be easily seen.
When the observation range is wide, if the gain is increased, it is effective.

࡮

But, due to noise increase, small targets become hard to be seen.

Objects near own ship
can be easily confirmed.

Example of gain adjustment:

: Too high gain

Noise is also displayed. Desired targets are

1.7 Gain adjustment

: Optimum gain : Too low gain

displayed.

Some targets are not
displayed.

0093142132-05 1-2

Chapter 1 Basic Operation MDC-900 Series

1.1 How to read the radar screen

Heading

Ship
speed

F2 key content
F1 key content

Off center
Pulse width

Range
Fixed marker interval

Display mode

Process

Enhance

Alarm

Trail

IN

FTC

Interference
Rejection

PRC

Crosshair
cursor

VRM

EBL

OWN ship's position

1-3 0093142132-05

Cursor position

MDC-900 Series Chapter 1 Basic Operation

1.2 How to use the keys

(1) (2)

E

N

T

(3)
(4)

U

N

E

M

(5)

RANGE

GAIN

(6)

(7)

(8)

STBY

TX

BRILL

(9)

(10)

Various adjustment items can be set by operating each key.
The menu displayed by pressing the [MENU] key closes when pressing the [MENU] key again.

0093142132-05 1-4

Chapter 1 Basic Operation MDC-900 Series

Number Key name Explanation
(1) [F1]* Recalls directly the preset menu item.
(2) [ENT] * Press: measures bearing of distance between two points.

Continuously pressing: Deletes the heading line. The crosshair cursor
moves to the own ship’s position.
The value in the menu is set. (Some of functions)

(3) CURSOR

[

], [ ]

[

], [ ]
(4) [F2] * Recall directly the preset menu item.
(5) [MENU] * Opens or closes the menu.
(6) [- RANGE+] Changes the range setup.
(7) [GAIN] * Rotate: Changes the gain.

(8) [STC] Rotate: Changes the STC.

(9) [STBY/TX] Starts or stops the transmission.
(10) [BRILL]* Push: Adjusts the brilliance and the brightness of the panel.

* In case of pressing it during the CCD camera on, the display of the CCD camera becomes off.
When the alarm is functioning, the alarm stops by operating any key.

Selects the menu item.
Changes the content of set value.
Moves the crosshair cursor.

Push: Changes the gain adjustment of sub-screen (lower screen of

PPI/PPI) and the range.

In the PPI or PPI/NAV display, recall directly the preset menu

item.

Push: Display the video of a CCD camera.When the video of a CCD

camera is displayed, if you press it, the size of video changes.

When not connecting CCD camera, recall directly the preset

menu item.

Continuously pressing: Turns on or off the power.

1-5 0093142132-05

MDC-900 Series Chapter 1 Basic Operation

1.3 Power On/Off

The [BRILL] key is used for both the power on/off
and the change of brilliance of the LCD & panel.

Power On

1 Press the [BRILL] key to turn on the power.

The start-up menu is displayed. During the
display of start-up menu, the memory is
automatically checked. If the check result is
correct, the radar image appears, and start
count down time for magnetron preheat.

Power Off

1 When turning off the power, keep pressing

the [BRILL] key for 3 seconds.

Caution

Language Selection at Initial Start-up

When turning on the power for the first time after
[ALL RESET], the [LANGUAGE] menu appears.

Re-entry of power shall be performed
after having passed for longer than 3
seconds after power-off.

2 Press the [ ] and [ ] keys.

“1” is darkest. “10” is brightest.

LCD BRILL

10

3 Press the [MENU] key or [ENT] key to close

the menu.

Brightness Adjustment of Panel

The panel brightness can be adjusted,
Setup: (1 to 10) (Initial value: 10)

1 Press the [BRILL] key briefly.

When [LCD BRILL] appears, press the
[BRILL] key again.

2 Select the level with the [ ] and [ ] keys.

“1” is darkest. “10” is brightest.

PANEL BRILL

10

3 Press the [MENU] key or [ENT] key to close

the menu.

1 Select the language with [ ] and [ ] keys.

During display of [LANGUAGE] menu,
pressing the [
setup menu.
Pressing the [
[LANGUAGE] menu.

] key will return to the initial
] key will redisplay the

2 Press the [MENU] key to set the language.

1.4 Brilliance Adjustment

Brightness Adjustment of LCD

The brilliance of menu can be adjusted to make it
easier to see.

1.5 Transmission

Start of Transmission

After turning on the power, remaining time of
pre-heat is displayed in the center of the screen.
After 120 seconds, ST’BY appears in the center
of the screen and the unit becomes “STBY” state.
On the “STBY” state, when the [STBY/TX] key is
pressed, the unit starts the transmission.

Stop of Transmission

On the “TX” state, when the [STBY/TX] key is
pressed, the unit stops the transmission and
returns to the “STBY” mode.

Setup: (1 to 10) (Initial value: 10)

1 Press the [BRILL] key briefly.

0093142132-05 1-6

Chapter 1 Basic Operation MDC-900 Series

1.6 Switch-over of Range

The observation range can be changed.

Change of Range

1 Press the [- RANGE +] key.

When pressing the [+] key, an image shrinks
but the observation range expands.
When pressing the [-] key, the observation
range becomes narrow but the enlarged
surroundings around own ship can be seen.

The value of the range is displayed at the
upper left side of the screen.

Change of Sub-screen Range

Change the range of the lower screen
(sub-screen) of the PPI/PPI menu.

For the PPI/PPI screen, refer to 2.4 Display

Select.

1 Press the [GAIN] knob.

When the [SUB-SCREEN GAIN] appears,
press the [GAIN] knob again.

Result picture after adjustment by [GAIN] knob

Land

Own ship

<Picture of too low gain>

Land

Own ship

<Picture of adjusted gain>

Land

Own ship

2 Change the range of the sub-screen range

with the [

0.75

] and [ ] keys.

3 Press the [MENU] key or [ENT] key to close

the menu.

1.7 Gain Adjustment

Adjust the gain according to the distance range
and reflection from the sea surface/rain/snow to
observe an image easily.

Gain Adjustment

1 When rotating clockwise the [GAIN] knob,

the gain increases.
When rotating counterclockwise the [GAIN]
knob, the gain decreases.

 When the short distance or targets are

crowded, if the gain is reduced, the image can
be easily seen.

 When the long distance, if the gain is

increased, it is effective but due to increase of
noise, the image becomes hard to be seen.

<Picture of too much gain>

In the PPI/PPI menu, the gain of the upper
screen (main screen) changes when the [GAIN]
knob is adjusted.

Adjustment of Sub-screen Gain

Adjust the lower screen (sub-screen) in the
PPI/PPI menu.

For the PPI/PPI screen, refer to 2.4 Display

Select.

1 Press the [GAIN] knob.

When the [SUB-SCREEN RANGE] appears,
press the [GAIN] knob again.

2 Adjust the sub-screen gain again with the

[

] and [ ] keys.
The gain increases when increasing the
numeral and decreases when decreasing the
numeral.

5.0

3 Press the [MENU] key or [ENT] key to close

the menu.

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MDC-900 Series Chapter 1 Basic Operation

1.8 STC Adjustment

In the short distance menu, even if waves are
low and the sea surface is calm, an echo
reflected from the sea surface appears in the
image.
When waves become high, the sea surface
reflected echo covers around the center of the
image and make it harder to see targets.
Adjust the STC to suppress the reflection from
the sea surface so that the image becomes
visible easily.

STC Adjustment

1 When rotating clockwise the [STC] knob, the

reflection suppressing effect becomes
stronger.

 When not influenced by waves, rotate fully

counterclockwise the [STC] knob.

 This function reduces the gain at short

distance. If rotating clockwise the [STC] knob
too much, desired targets disappear.

Picture after adjustment with [STC] knob

Land

In the PPI/PPI menu, when rotating the [STC]
knob, the STC functions effective in both
displays.

1.9 Use of [F1] and [F2] keys

The following functions can be assigned to the
[F1] and [F2] keys.

 [FTC]
 [MODE]
 [DISPLAY SELECT]
 [OFF CENTER]
 [ENHANCE]
 [TRAIL TIME]
 [EBL]
 [VRM]
 [COLOR]
 [PI]
 [ALARM MODE]
 [MAN ACQ]
 [DELETE]
 [POB]
 [TARGET]
 [OTHER SHIP]
 [PULSE]
 [PROCESS]

<Picture of too low STC>

<Picture with sea clutter>

<Picture of adjusted STC>

<Picture of too much STC>

Own ship

Land

Own ship

Land

Own ship

Refer to the F1/F2 keys set in 3.5 Preset.

The assigned function is displayed at the upper
right side of the screen.

How to use [F1] and [F2] keys

When pressing the [F1] / [F2] key, the assigned
function works.

Function Operation

FTC

Mode

Display Select

Off Center

Enhance

When pressing the [F1] / [F2] key, the
setup of FTC changes.
When pressing the [F1] / [F2] key, the
display mode changes.
When pressing the [F1] / [F2] key, the
display changes.
After pressing the [F1] / [F2] key, if [ ]
or [

] key is pressed, the ON/OFF
setup of the OFF CENTER changes.
After pressing the [
selected and moving the crosshair
cursor, if the [ENT] key is pressed, th e
position of crosshair cursor is set as a
position of own ship.
When pressing the [F1] / [F2] key, the
setup of ENHANCE changes.

] key with ON

0093142132-05 1-8

Chapter 1 Basic Operation MDC-900 Series

Trail Time

EBL

VRM

Color

PI (Parallel
Index Line)

Alarm Mode

Acquire*

Delete*

POB***

Target***

When pressing the [F1] / [F2] key, the
trail time changes.
The On/Off display of EBL is toggled
by pressing the [F 1 ] / [F2] key.
Operate the EBL during display with
the [

] and [ ] keys.
The On/Off display of VRM is toggled
by pressing the [F 1 ] / [F2] key.
Operate the VRM during display with
the [

] and [ ] keys.
When pressing the [F1] / [F2] key, the
display color changes.
After pressing the [F1] / [F2] key, the
display of parallel cursor changes to
the one side/both sides/OFF.
After pressing the [
side/both sides, change the interval
with the [
bearing with [
After pressing the [F1] / [F2] key, if the
[

] or [ ] key is pressed, the alarm
mode changes to the IN/OUT/OFF.
When selecting the In/Out, if the [
key is pressed, the mode enters in the
alarm range set state.
When pressing the [F1] / [F2] key, a
target aligned with the crosshair cursor
is acquired.
In case of selecting [NUMBER] in the
menu, if the [F1] / [F2] key is pressed, the
numeral selection menu appears.
Select the number of the desired capture
to be released with [
press the [ENT] key to set it.
In case of selecting [CURSOR] in the
menu, if the [F1] / [F2] key is pressed, the
capture of a target aligned with the
crosshair cursor is released.
The position of own ship at the
moment when the [F1] / [F2] key is
pressed is stored as a POB position. In
the state that the POB position is
stored, if the [
after pressing the [F1] / [F2] key, the
setup of renewal/release of the POB
position can be changed.
The renewal or release of the PO
position can be performed with the
[ENT] key.
The position of crosshair cursor at the
moment when pressing the [F1] / [F2]
key is outputted to the external
terminal with the TLL sentence.

] / [ ] keys and then the

] key to the one

] / [ ] keys.

]

] / [ ] keys and

] or [ ] key is pressed

B

Other Ship**

Pulse

Process

When pressing the [F1] / [F2] key, the
information of a target aligned with the
crosshair cursor is displayed in the
window.
When pressing the [F1] / [F2] key, the
pulse width changes.

When pressing the [F1] / [F2] key, the
process changes.

* The ATA board (optional) is required.
** The AIS interface board / cable (optional) or
ATA board (optional) is required.
*** Inputting the bearing, the latitude and
longitude data is required.

1.10 Delete of Heading Line

When a heading line overlaps over targets and it
is hard to see targets, the heading line can be
deleted.

Delete of Heading Line

1 When keep pressing the [ENT] key, the

heading line disappears. While pressing the
[ENT] key, heading line can be deleted.

Caution

For safety, it is not allowed that the
heading line remains deleted.

2 When releasing the [ENT] key, the heading

line appears again. At this moment, the
crosshair cursor moves to the own ship’s
position.

1.11 Use of Crosshair
Cursor

The crosshair cursor can move freely on the
radar screen. According to moving of the cursor,
the cursor position, distance and bearing from
own ship are displayed.

1 Press any of [ ], [ ], [ ] and [ ].

The crosshair cursor moves and the cursor
information is displayed.

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MDC-900 Series Chapter 1 Basic Operation

1.13 Camera Display

The video of a CCD camera can be displayed on
the radar screen. (CCD camera: Prepared by a

crosshair cursor

customer)

How to connect a CCD camera

cursor position
cursor bearing

cursor distance

1.12 Measuring the
distance and bearing
between two points

The distance and bearing between two point s,
you desire, can be measured, using the
crosshair cursor.

Measuring the distance and bearing
between two points

1 Move the crosshair cursor to one point

desired with the [

2 Press the [ENT] key to set it as an origin.
3 When moving the crosshair cursor with the

[

], [ ], [ ] and [ ] keys, the distance and
bearing from the origin to the position of the
crosshair cursor are displayed.

4 When pressing the [MENU] key, the 2-point

calculation is finished.

], [ ], [ ] and [ ] keys.

origin

1 Connect CW-405-0.3M cable (optional

cable) to the J7 in the rear connectors.

2 Connect a commercially available CCD

camera to the cable.

How to display the video of a CCD
camera

1

Press the [STC] knob.
The video of a CCD camera appears.
A split-screen display and a full screen
display are toggled by pressing the [STC]
knob.

2 When pressing the [ ] or [ ] key in the state

that a video of the CCD camera is displayed,
the display position of the video of the
camera video can be corrected.

3 When displaying the video of the CCD

camera, if a key other than the [STBY/TX]
[

] and [ ] keys is pressed, the video of the

CCD camera disappears.

When displaying the video of a CCD
camera, the display area of the radar

Caution

image is narrowed.
When set to [Full Screen Display], the
radar image is completely concealed.
When displaying the video of a CCD
camera, pay attention to the display
area.

35°24.334N

139°

0.903NM

crosshair cursor

45.831E

152.1°

cursor position

Bearing of the crosshair cursor

when viewed from the origin

Distance between the origin

and the crosshair cursor

Caution

When installing a CCD camera, orient
it correctly. When correctly installed,
the 90 degree-shifted video of a CCD
camera is displayed. Install a CCD
camera in a correct orientation so that
the video in a correct direction is
displayed.

0093142132-05 1-10