Koden MDP-621 User manual

MDP-621
MDP-641
MDP-640
MDP-600SER.OM.E 0093161022-07

Declaration of Conformity
(As required by Article 6.3 of Directive 1999/5/EC-RTTE Directive)
Declares under his sole responsibility that the produced Marine Radar System manufactured
by
Koden Electronics Co., Ltd.
5278 Uenohara
Uenohara-Shi,
Yamanashi-Ken
409-0112
Japan
Telephone [phone] Telefax [phone]
Intended for Worldwide use as a Marine Radar for use aboard non-SOLAS vessels and
identified by the type number MDP-621 / MDP-641 / MDP-640 to which this
declaration refers has been tested to the essential radio test suites required by the notified
body and is in conformity with the standards
EN 60945 : 2002 ( Clauses 9,10 & 12 )
EN 62252 : 2004 ( Clauses 4.8, 4.33, 5.8, 5.33 and Annex D )
ITU-R Recommendation RM.1177
and complies with the essential requirements of Directive 1999/5/EC
Conformity procedure under Annex IV of 1999/5/EC (Technical Construction file) has been
undertaken by
QinetiQ (0191) Fort Cumberland Road, Eastney, Portsmouth, England.
The Technical Construction File is held by Mr Heinz Hoghoff at
Koden Elektronik GmbH,
Am Gewerbepark 15,
D-64823 Gross-Umstadt / Hessen
Germany
Telephone [phone] Telefax [phone]
Kenichi Chiwaki, QA Manager.
Koden Electronics Co., Ltd.
Statement Number: QQ-RTTE-11/05-01
: QQ-RTTE-12/05-01
: QQ-RTTE-14/05-01
Notified Body : QinetiQ
07 Jul. 2005

AMENDMENT HISTORY
RADAR PLOTTER SYSTEM OPERATION MANUAL
Doc No: 0093161022
No. Document No & Rev No. Date Amendments
0 93161022-00 04/06/29 First issue
1 93161022-01 05/01/11 Chapter3,5,6,7,8,9,10.
2 93161022-02 05/03/22 Chapter4
3 93161022-03 05/10/07 K-Link System
4 0093161022-04 06/01/19 Cover
5 0093161022-05 06/04/10 Declaration
6 0093161022-06 06/11/02
C-MAP MAX :Chapter1,2,3,4,5,6,7,8,9,10,11,12
7 0093161022-07 07/02/26 Chapter3
8
9
10
Amendment policy
When any change is applied in the document, only the document number of the relevant sheet(s) and
cover sheet are modified and the rest of the sheets are not changed. The document number is shown in
the footer area, right or left bottom of each sheet.
○
c2004, 2005 2006,2007 Koden Electronics Co.,Ltd. All rights reserved.
No part of this publication may be reproduced, transmitted, translated in any form 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.

Safety Symbols
To prevent the risk of personal injury or damage to the equipment, the following safety
symbols are used to indicate safety-related information. Be sure that you clearly un-
derstand the meanings of the symbols BEFORE using the equipment.
Symbols Used in Manual
This indicates a very dangerous procedure that could result
in serious injury or death if not performed properly.
DANGER
!
This indicates a hazardous procedure that could result in
serious injury or death if not performed properly.
WARNING
!
This indicates a hazardous procedure or danger that could
result in a light-to-severe injury, or that might damage the
equipment, if proper precautions are not taken.
CAUTION
!
Safety Symbols Used on Equipment
The following safety symbols are used inside or on the equipment near operation lo-
cations to provide information about safety items and operation precautions. Ensure
that you clearly understand the meanings of each symbol and take necessary precau-
tions BEFORE using the equipment.
This indicates high voltages with a risk of serious electric shock if the part is
touched. NEVER touch the part with bare hands, etc.
This symbol prohibits the operation shown inside the symbol. (The example
on the left prohibits disassembly.)
This symbol indicates that the operation inside the symbol is potentially
hazardous. (The example on the left indicates that a power plug should be
held when disconnecting it from an AC outlet.)
This indicates the ground (earth) terminal. If the equipment cannot be
grounded via a power cord,connect this terminal to ground. There is a risk of
serious electric shock if the equipment is not grounded.
MDP-621/641/640
RADAR PLOTTER
Operation Manual
MDP-621/641/640 OPERATION MANUAL –06 i

For Safety
WARNING and CAUTION for Scanner Unit and Antenna;
1 Do not approach the antenna while it is transmitting.
In addition, at inspection never look into the wave-guide during transmission.
Distance at which RF power density level to become 100 W/m2: 0.8 m
Distance at which RF power density level to become 10 W/m2: 8 m
2 There is a risk of receiving electric shock if these parts are touched by accident.
Only qualified personnel should remove covers on these parts.
1 2
WARNING for Display Unit;
There is a risk of receiving electric shock if these parts are touched by accident.
Only qualified personnel should remove covers on these parts.
ii MDP-621/641/640 OPERATION MANUAL – 06

Installation
Read and understand the manual thoroughly before installing this unit.
To The User
* Read and follow the operation and maintenance procedures in this manual. Note that this
equipment is only a navigational aid. There is no warranty for navigational safety. It is no sub-
stitute for prudent navigational procedure and should not be relied on solely for passage.
* If this equipment does not operate properly, immediately turn off the power switch and disconnect
the main power supply. Notify your authorized Simrad dealer or technical service center as soon
as possible.
* The liquid crystal display as well as some of the internal components of this radar can be dam-
aged by dropping or excessive force due to impact. Mount the unit so that it will not be subject to
these forces.
* Mercury (Hg) is used in the LCD backlight. When the unit is taken out of service, it should be
disposed of according to local regulations regarding hazardous materials.
DISCLAIMER
KODEN assumes no liability for any errors, omissions, damages, or accidents resulting from the
interpretation of the supplied documentations.
MDP-621/641/640 OPERATION MANUAL –06 iii

CAUTION
RADAR PLOTTER
MDP-621/641/640
1. When POB is active, Soft Key Menu does not appear by pressing GOTO Key
and WAYPOINT cannot be set.
To cancel POB, the following action is required. Turning the power off does not
cancel POB.
(1) Press POB Key.
(2) Soft Key Menu appears.
(3) Press the Soft Key assigned for POB CANCEL.
2. Pressing DELETE Key to erase any MARK will completely eliminate the des-
ignated MARK. The MARK cannot be retrieved once it is erased.
Additional Notice on Fish Finder Processor Unit CVB-20
1. Power Switch:
CVB-20 does not have an independent power switch.
Power is always on while it is plugged to the power source.
CVB-20’s power is not off even if the main display unit is off.
We recommend to using the switch on the distributor or connecting with a
separate switch to put the power off when the CVB-20 is not in operation.
2. Starting Fish Finder Operation:
Fish finder operation starts and its display appears at 30 seconds after both the CVB-20
and display unit are turned on.
iv MDP-621/641/640 OPERATION MANUAL – 06

MDP-621/641/640 Main Index
Operation manual
Main Index
Chapter 1 General Information
Chapter 2 Equipment Composition
Chapter 3 Specification
Chapter 4 Installation
Chapter 5 Basic Operation
Chapter 6 Plotter Operation
Chapter 7 Radar Operation
Chapter 8 Sounder Operation
Chapter 9 Navigation Data Operation
Chapter 10 MENU Operation
Chapter 11 Trouble Shooting
Chapter 12 Maintenance 
93161022-03 Main Index

MDP-621/641/640 Chapter 1
Operation manual General Information
Chapter 1 General Information

Page No.
1.1 General description...................................................................1-1
1.2 Applicable technical standard..................................................1-1
1.3 Equipment composition............................................................1-1
1.3.1 Model outline ................................................................................................1-2
1.3.1.1 Radar Plotter.................................................................................................1-2
1.3.2 Network outline.............................................................................................1-3
1.3.2.1 Radar Plotter and Sounder ...........................................................................1-3
1.3.2.2 Radar Plotter multi-display............................................................................1-4
1.3.2.3 Radar Plotter multi-display and Sounder ......................................................1-5
1.4 Applied software........................................................................1-5
1.5 About GPS..................................................................................1-6
1.6 About radar ................................................................................1-7
1.6.1 What is radar ................................................................................................1-7
1.6.2 Characteristics of Radar Wave.....................................................................1-7
93161022-03 Contents

MDP-621/641/640 Chapter1
Operation manual General Information
Chapter 1 General Information
1.1General description
The K-link system is a network navigation system with radar, plotter, and sounder functions. The
system is developed for small and medium size vessels. The Radar Plotter (MDP-621/641/640)
features a high-resolution 7-inch TFT flat Liquid Crystal Display. This device provides a plotter screen,
radar screen, sounder screen, and a map-overlaid radar screen as multimode screens on a single
screen or split screen.
The device has worldwide C-Map NT MAX charts as its standard. For creating original charts, the
desired C-Map USER C-CARD shall be provided by the purchaser.
1.2Applicable technical standard
The Radar Plotter meets with the requirements of IEC 60945 Edition 3, general requirements for
marine electronic equipment.
1.3 Equipment composition
Table 1. 1 Model composition
Radar Plotter
Model MDP-621 MDP-641 MDP-640
Display RGD-600
Transceiver 2kW Radome
RB714A 4kW Radome RB715A 4kW Open RB716A
Aerial
1.2 ft 2 ft 3 ft
RW701A-03
4 ft
RW701A-04
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1.3.1 Model outline
1.3.1.1 Radar Plotter
GPS-20A(B-Type)
GPS Sensor
(Option)
Transceiver RB716A
4kW Open
Aerial
3 ft (RW701A-03) /
4 ft (RW701A-04)
NME
A
-0183 I/O
O
p
tion
To Network
Option
Transceiver
RB714A
2kW Radome
1.2 ft
Transceiver
RB715A
4kW Radome
2 ft
GPS Compass
(Option)
KGC-1
7 inch Display
RGD-600
Figure 1. 1 Outline of Radar Plotter models
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MDP-621/641/640 Chapter1
Operation manual General Information
1.3.2 Network outline
1.3.2.1 Radar Plotter and Sounder
GPS-20A(B-Type)
GPS Sensor
(Option)
Transceiver
Open
Transceiver
Radome
GPS Compass
(Option)
KGC-1
NME
A
-0183 I/O
RGD-600
Or
RGD-120
Sounder unit
CVB-20
Transducer
Option
O
p
tion
Figure 1. 2 Network outline of Radar Plotter and Sounder
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1.3.2.2 Radar Plotter multi-display
GPS-20A(B-Type)
GPS Sensor
(Option)
Transceiver
Open
Transceiver
Radome
GPS Compass
(Option)
KGC-1
NME
A
-0183 I/O
Option
O
p
tion
1st Display
RGD-600
Or
RGD-120
2ndDisplay
RGD-600
Or
RGD-120
Figure 1. 3 Network outline of Radar Plotter multi-display
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MDP-621/641/640 Chapter1
Operation manual General Information
1.3.2.3 Radar Plotter multi-display and Sounder
GPS-20A(B-Type)
GPS Sensor
(Option)
Transceiver
Open
Transceiver
Radome
GPS Compass
(Option)
KGC-1
NME
A
-0183 I/O
100/10BaseT
HUB
Sounder unit
CVB-20
Transducer
1st Display
RGD-600
Or
RGD-120
Option
O
p
tion
2ndDisplay
RGD-600
Or
RGD-120
3rd Display
RGD-600
Or
RGD-120
Figure 1. 4 Network outline of Radar Plotter multi-display and Sounder
1.4 Applied software
Table 1. 2 The software kits and types
Device model Software kit Software type
Radar Plotter KMC-103※Program ROM
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1.5 About GPS
GPS is a navigation system using 24 satellites (21 plus 3 in service) orbiting 20,183 km high from the
earth every 11 hours 58 minutes.
Positioning by GPS
Your position is determined by calculating the distance from two satellites (in 2-dimensional
positioning) or three satellites (in 3-dimensional positioning) to your position. The distance is
determined by the time taken for a message to be sent from the satellites to the receiver. In
2-dimensional positioning, your position (latitude and longitude; height is preset) is determined at the
intersection point of three spheres formed by three satellites. In 3-dimensional positioning, your
position (latitude, longitude and height) is determined at the intersection of four spheres formed by four
satellites.
The 3 circles drawn referenced to
each satellite position
The GPS receiver position (Poin
t
o
f
position fix) is the point where 3 spheres
intersect.
Figure 1. 5 Constellation of GPS satellites
NOTE
The GPS system is based on the geodetic system called WGS-84. In conventional world maps
one coordinate system differs from others with region, and this causes the position fix made on
the map and GPS measurement to differ in the order of a few hundred meters.
Time required for position fixing
In the following circumstances, your GPS receiver takes more time to make a stable position fixing:
(1) When you turn the GPS receiver on for the first time.
(2) The stored orbital data is not suitable for the available satellite, or purged due to lengthy storage.
(3) When you use it after moving a long distance
When the GPS receiver is first turned on, it starts to store the orbital data sent from the satellite. It
takes about 15 minutes before the first fix is available. After this, the receiver can fix your position
within a minute by using the previously stored data.
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MDP-621/641/640 Chapter1
Operation manual General Information
1.6 About radar
This paragraph describes basic fundamentals and technical terms used for radar.
1.6.1 What is radar
Radar is an abbreviation of radio detection and ranging. Radar uses very high frequency radio waves
called microwaves. It emits the radio wave all round the circumference and causes it to bounce back
from objects on the surface of the ocean, such as ships, buoy, land, etc. These radio wave reflections
called “echo” are received by the radar antenna and converted to electrical signals. After being
processed, it is shown on the screen in polar form, called PPI (Plan Position Indication). Radar is a
very effective means in locating own ship’s position as well as assessing the risk of collision with other
ships, even in poor visibility conditions such as night-time, foggy circumstances, etc.
The radio wave emitted from the radar antenna is called “pulse”, which is transmitted hundreds to
thousands times per second. The antenna used for radar is called reflector or slotted array, which is
designed to allow the radio wave to be emitted in a fan-shaped beam. Due to this characteristic, radar
provides high definition picture in azimuth, stable detection in elevation, even if own ship rolls or
pitches. As an index of the antenna performance, there are functional parameters called “horizontal
beam width” and “side lobe”. As shown in the following figure, the side lobe is a residual transmission
to each side of the main beam. The narrower the beam, the higher the echo definition and the lower
the side lobe, the fewer the false echoes in arc.
Side lobe Side lobe level
Beam width
Main lobe
Side lobe
Antenna
The beam in which the strongest radio signal is radiated from the
antenna is called the “main lobe”. Those beams that are radiated in
other directions are referred to as the “side lobes”. The side lobe
level refers to the difference in level (signal strength) between the
largest side lobe and the main lobe.
Figure 1. 6 Antenna pattern
1.6.2 Characteristics of Radar Wave
Radio waves travel out from the antenna while bending slightly along the earth's surface. The amount
they bend depends on atmospheric conditions. The sight distance of a radar generally is about 6%
longer than the optical sight distance and is calculated using this equation:
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Chapter1 MDP-621/641/640
General Information Operation manual
Radar sight distance (NM) = 2.22 ( antenna height (m) + target height (m))
h1 h2
Line of sight
Radar Radio
Earth
Targets difficult to display on screen
Figure 1. 7 Radar wave propagation
The intensity of the reflected radio signal from a target depends on the distance, height, and size of
the target, as well as its material and shape, along with the radar’s transmitter power output and
antenna size. Targets made of fiberglass, wood, or other low-reflectance materials or those that have a
small incident angle are difficult to display on a screen. Sandy beaches, and sandy or muddy shallows
can be difficult to catch. Because there is not much to reflect a signal back to you, a coastline can
actually be closer to your boat than it appears on the screen.
Apparent coastline
Actual(invisible)
coastline
Invisible
Visible
3
1
Figure 1. 8 Targets difficult to display on screen
Shadow zones of radar
Radar waves propagate in a straight line like light. Ahigh outcropping of land or a large ship will create
a shadow zone behind it and prevent you from seeing targets on the other side. More importantly, if a
mast or some part of the boat's superstructure is in the path of the antenna's scan, this will also create
a shadow zone. No targets will be recognized behind it and it could create a dangerous situation.
False echoes
Sometimes radar will display targets on screen that do not exist in the real world. You should be aware
of how and why this happens.
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MDP-621/641/640 Chapter1
Operation manual General Information
A. Ghost echoes
Sometimes one large object very near your boat will appear as two different targets on screen. One
is the actual radar echo. The other is a ghost echo generated by a re-reflection of the original signal.
It comes back to your own boat, bounces back to the target, and then is picked up by the antenna on
the second bounce. The actual echo appears at the correct distance and bearing on the screen. The
ghost echo appears somewhere behind your boat. This type of false echo is also generated by
re-reflection of waves from bridges, quay walls or building along shore.
Target
Direct re
f
lection
path
S
econdary
reflection path
Mast etc.
Real echo
Ghost echo
Direction of ghost echo
3
1
HU
Figure 1. 9 False echoes of radar (Ghost echoes)
B. Multiple echoes
If there is a large vertical reflecting surface near your boat, as in the case when you pass along side a
large ship, radar signals are repeatedly bounced back and forth between your boat and the other
object. Two to four images appear on the screen at equal intervals in the same bearing. This is called
a multiple echo. The image appearing closest to you is the real echo. Multiple echoes will disappear as
you move away from the reflecting object or its bearing changes.
3
1
HU
Real echo
Multiple
Figure 1. 10 False echoes of radar (Multiple echoes)
C. False echoes caused by side lobe
An antenna's side lobe emissions are low power, and will not register distant targets. However, if
there is a strong reflecting target near your boat, it sometimes may appear as a circular-arc false echo
on the screen.
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CAUTION
When near large targets or land, your boat's mast may sometimes appear as a
circular-arc shaped false echo.
3
1
Real echo
False sidelobe
echoes
Main lobe
Side lobes
Antenna
Figure 1. 11 False echoes of radar (Caused by side lobe)
D. Distant false echoes caused by duct phenomenon
The duct phenomenon sometimes occurs when meteorological conditions create a temperature
inversion between layers of air. When this happens, radar waves propagate erratically and can reach a
location considerably farther away from your boat than the radar's maximum distance range. What
appears onscreen is a false echo that looks to be nearer than the actual target. Since the true echo
from the distant target is outside the measurement capabilities of the radar, its apparent distance will
change when you change ranges, and you can conclude that it's a false echo.
Radar interference
If another boat's radar is operating on the same frequency as yours, it can create interference on your
display. The interference usually appears as spiral or radial patterns. The RA51/52/53/54/55 radar has
two levels of interference rejection control to eliminate interference. Turn it on to reduce or eliminate
the interference.
3
1
HU
Radar inrterference
Figure 1. 12 Radar interference shown on the screen
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MDP-621/641/640 Chapter 2
Operation manual Equipment Composition
Chapter 2 Equipment Composition
Page No.
2.1 Standard equipment list..........................................................2-1
2.2 Spare parts list.........................................................................2-2
2.3 Installation materials list.........................................................2-2
2.4 Option items list.......................................................................2-3
93161022-03 Contents