Koden MDC-2900 User manual

MDC-2900 Series
0092629012-00
MDC-2900 Series Installation Manual
Doc No: 0092629012
Revision history in document
No. Document No./
Version No.
Revised
Date
Description
0 0092629012-00 2009/02/28 First edition
1
2
3
4
5
6
7
8
9
10
Revision criteria for document number/version number
If any contents of the document has been revised, the version number is altered on the
cover sheet and corresponding chapter revised, while the other chapters remain unchanged.
The document number is designated lower right in the cover sheet and at the left or right
part of every footer.
Prohibition of copy/reprint
No part of this manual shall be reprinted or copied by any means without written permission
by Koden Electronics Co., Ltd.
Disclaimer
The specifications and technical issues described in this manual are subject to change
without notice. Koden Electronics Co., Ltd. has no responsibility for any human and physical
damage or failure caused by the interpretive error of this manual.

MDC-2900 Series A table of content
0092629012-00 i
Preface ...........................................................................................................................................1
Precaution for operation ..........................................................................................................1
Precautions for maintenance...................................................................................................2
• Caution against residual high voltage:...................................................................................2
• Keep inboard power source “Off”: .........................................................................................2
• Caution against the dust:.......................................................................................................2
• Measures against static electricity:........................................................................................2
Chapter 1 Prior to installation...................................................................................................... 1-1
1.1 Installation precautions.................................................................................................. 1-1
1.2 Unpacking of components ............................................................................................. 1-1
1.3 Appearance verification of each unit and accessories ................................................... 1-1
1.4 Selection of location for installation ............................................................................... 1-1
1.4.1 Antenna-Scanner unit................................................................................................. 1-1
1.4.2 Display unit and Operation unit .................................................................................. 1-2
1.5 Cable wiring and interconnection................................................................................... 1-2
1.5.1 Antenna-Scanner unit................................................................................................. 1-2
1.5.2 Display unit................................................................................................................. 1-2
Chapter 2 System configurations ........................................................................................... 2-1
2.1 Standard configuration list ............................................................................................. 2-1
2.2 Spare parts list............................................................................................................... 2-4
2.3 Installation material list ..................................................................................................2-4
2.4 Options .......................................................................................................................... 2-5
2.5 MDC-2960/2910/2920 series system configuration ....................................................... 2-6
Chapter 3 Method of installation...............................................................................................3-1
3.1 How to install the Antenna-Scanner unit........................................................................ 3-1
3.1.1 Installation of the Antenna-Scanner unit..................................................................... 3-1
3.1.2 Mounting antenna....................................................................................................... 3-2
3.1.3 Connecting the cable.................................................................................................. 3-3
3.2 Interconnection diagram of cable................................................................................... 3-4
3.3 Installation of the display unit......................................................................................... 3-5
3.3.1 Installation of MRD-105.............................................................................................. 3-5
3.3.1.3 Installation of Operation unit.................................................................................... 3-7
3.3.1.3 Installation of Operation unit.................................................................................... 3-8
3.4.1 Cable connection for MRD-105 Display unit..............................................................3-11
3.4.2 Cable connection for MRM-105 Processor unit........................................................ 3-12
3.4.3 Connecting the 2nd monitor with MRD-105.............................................................. 3-13
3.4.4 Connecting a VDR or the 2nd Monitor(MRM-105) and the Alarm output.................. 3-13
3.4.5 Connecting a Gyro converter unit or THD ................................................................ 3-14

A table of content MDC-2900 Series
ii 0092629012-00
3.4.6 AIS cable connection................................................................................................ 3-14
3.4.7 Cable connection for NAV, EPFS and SDME or Log................................................ 3-15
3.4.8 Cable connection for interswitch............................................................................... 3-16
Chapter 4 Setup after installation................................................................................................ 4-1
4.1 Display [STARTUP] menu......................................................................................... 4-1
4.2 Set up antenna installation height from sea level...................................................... 4-1
4.3 Setup antenna cable length ...................................................................................... 4-1
4.4 Adjustment of automatic tune................................................................................ 4-2
4.5 Adjustment of transmitting delay time (Trigger Delay) ................................................... 4-2
4.6 Display bearing adjustment ........................................................................................... 4-2
4.7 Setup of MBS value (Main Bang Suppression) ............................................................. 4-3
4.8 Setup own ship profile (Cannot use while transmitting) ................................................. 4-3
4.9 MON (performance monitor).......................................................................................... 4-4
4.11 Setup Interface ............................................................................................................4-5
4.11.1 Select Heading interfaces......................................................................................... 4-5
4.11.2 Speed interfaces....................................................................................................... 4-6
4.11.2.1 Setup speed through water (STW) ........................................................................ 4-6
4.11.2.2 Select speed over ground (SOG) interface............................................................ 4-6
4.11.2.3 Select SET/DRIFT input ........................................................................................ 4-7
4.11.3 Select POSITION interface....................................................................................... 4-7
4.12 Setup TIME............................................................................................................... 4-7
4.13. Setup of Output .......................................................................................................... 4-8
4.13.1 Alarm output .............................................................................................................4-8
4.14 Change of maximum adjustable range of [GAIN] knob ............................................. 4-8
4.15 Adjustment of SEA AUTO ............................................................................................ 4-8
4.16 Change of adjustment range of manual [SEA] knob ................................................. 4-9
4.16.1 Change of maximum value of [SEA] knob................................................................ 4-9
4.16.2 Change of minimum value of [SEA] knob................................................................. 4-9
4.17 Change of adjustment range of [CFAR] knob .............................................................. 4-9
4.17.1 Change of maximum value for suppression effect of [CFAR] knob .......................... 4-9
4.17.2 Change of minimum value of [CFAR] knob .............................................................. 4-9
4.18 Change of signal detection level of TT.................................................................... 4-10
4.19 Change of background noise and target signal gradation....................................... 4-10
4.19.1 Change of background noise ................................................................................. 4-10
4.19.2 Change of Signal gradation.................................................................................... 4-10
4.20 F (Function key) usage ............................................................................................4-11
Chapter 5 Troubleshooting and on-board repair ......................................................................... 5-1
5.1 Necessary information at the time requesting repairs.................................................... 5-1
5.2 Provided self diagnostic facilities ................................................................................... 5-1

MDC-2900 Series A table of content
0092629012-00 iii
5.2.1 Alarm display and its delete........................................................................................ 5-1
5.2.2 Status indicator lamp .................................................................................................. 5-4
5.3 Malfunction diagnosis .................................................................................................... 5-5
5.3.1 Malfunction detection step.......................................................................................... 5-5
5.3.2 Malfunction diagnosis flow chart................................................................................. 5-6
5.4 Repair.......................................................................................................................... 5-19
5.4.1 Replacement of fuse ................................................................................................ 5-19
Chapter 6 Maintenance .............................................................................................................. 6-1
6.1 List of parts that have longevity ..................................................................................... 6-1
6.2 Regular service and cleaning up ................................................................................... 6-1
6.2.1 Monthly inspection...................................................................................................... 6-1
6.2.2 Annual inspection ....................................................................................................... 6-2
6.3 Method of exchanging the magnetron ........................................................................... 6-4
Chapter 7 Input/output data ........................................................................................................ 7-1
7.1 Input data .................................................................................................................. 7-1
7.2 Details of TT tracking data output .................................................................................. 7-6
7.3 Details of the radar data output ..................................................................................... 7-6
7.3.1 Radar system data ..................................................................................................... 7-7
7.4 Interface specification.................................................................................................... 7-8
7.4.1 Serial data input/output specification.......................................................................... 7-8
7.4.2 VDR (external monitor) and Alarm output signal specification.................................... 7-9
7.4.3 Serial data input/output specification (AIS)............................................................... 7-10
7.4.4 Radar input/output signal specification......................................................................7-11
7.4.5 Gyro input signal specification...................................................................................7-11
7.4.5 Gyro input signal specification.................................................................................. 7-12
7.4.6 Talker device code of the data output devices.......................................................... 7-13

MDC-2900 Series Preface
0092629012-00 1
Preface
[Precaution for safety issues]
Precaution for operation
• Caution about rotating antenna:
The radar antenna may start rotating without notice. Please keep away from the antenna for your
safety.
• Caution about health risks caused by radio wave:
Powerful electromagnetic waves are emitted from the antenna during operation. These waves can
cause ill effects on human bodies when exposed to continuous irradiation.
International criteria
Though the international regulation states that the electromagnetic waves with a high-frequency
power density of not more than 100 W/m2do not have an ill effect on human bodies, medical
devices such as a pace makers are sensitive to electromagnetic waves with minute electric power
and their behavior may become unstable. In any event, any person with such a device must keep
away from electromagnetic sources.
Specified power density and distance from antennas (according to the
provision as specified in IEC 60945)
Transmission power / antenna
length
100 W/m250W/m210 W/m2
6KW / 4 feet antenna 1.09 m 1.55 m 3.46 m
6KW / 6 feet antenna 1.30 m 1.84 m 4.11 m
6KW / 9 feet antenna 1.55 m 2.19 m 4.89 m
12KW / 4 feet antenna 1.55 m 2.19 m 4.89 m
12 KW / 6 feet antenna 1.84 m 2.6 m 5.81 m
12KW / 9 feet antenna 2.19 m 3.09 m 6.90 m
25KW / 4 feet antenna 2.37 m 3.36 m 7.50 m
25KW / 6 feet antenna 2.82 m 3.99 m 8.91 m
25 KW / 9 feet antenna 3.35 m 4.74 m 10.6 m

Preface MDC-2900 Series
2 0092629012-00
• Caution about dangerous internal high voltage in the device:
High voltage that may cause risk of life is present in the antenna unit and the display unit of this
radar. This high voltage can remain in the circuit after the switch has been turned off. The
high-voltage circuit has a protective cover with a label “Caution against high voltage” so that no
one will accidentally touch it. Please ensure for your safety that the power switch is turned off and
residual voltage in the capacitor is discharged in a suitable manner when checking the inside of
the antenna. Maintenance and inspection should be conducted by qualified engineers only.
Precautions for maintenance
• Caution against residual high voltage:
The capacitor used in the display unit and the modulator circuit of the transmission unit may keep
high voltage for several minutes even after the power switch off. The maintenance and inspection
of this part should be performed at least 5 minutes after powering off or applying the appropriate
measure to discharge the residual electrical charge.
• Keep inboard power source “Off”:
An electric shock is possible if the power switch is accidentally turned on during the maintenance
operation. In order to prevent such an occurrence, please be sure to disconnect the power breaker
of the onboard power source and the device. Furthermore, it is recommended to post the
word-of-caution tag shown to be in a "working state" near the power switch of the device.
• Caution against the dust:
Dust can temporarily cause distress to the respiratory system. Take care not to inhale dust when
cleaning the interior of the device. It is recommended you wear a safety mask.
• Measures against static electricity:
Static electricity occurring from carpet on the floor of the cabin, clothes made of synthetic fiber etc.,
may damage some electronic parts on the printed circuit board. Please deal with the printed circuit
board only after taking any measures against static electricity.

MDC-2900 Series Chapter 1 Prior to installation
0092629012-00 1-1
Chapter 1 Prior to installation
1.1 Installation precautions
In order to obtain the maximum performance of radar systems, this radar system should be
installed by qualified engineers in charge of installation and maintenance. Installation procedures
include the following:
(1) Unpacking of components;
(2) Inspection of composition units, spare parts, accessories and installation materials;
(3) Checking of supply voltage and current capacity;
(4) Determination of the location for installation;
(5) Installation of the antenna unit;
(6) Installation of the display unit;
(7) Attachment of accessories;
(8) Planning and implementation of cable laying and connection;
(9) Coordination after installation.
1.2 Unpacking of components
Unpack components and check that all items correspond with the description of the packing list.
When a discrepancy or damage has been found, please contact the transportation insurance firm,
and follow procedures for searching for loss items and claim of expense.
1.3 Appearance verification of each unit and accessories
Please check the appearance of each unit carefully, confirm that any dent and crack free.
Moreover, please also check the interior of each unit and confirm that there is no electric or
mechanical damage.
The illumination panel (back light) of the LCD module is made of glass. If the unit is dropped,
damage may occur. Since the presence of damage might not be found by checking of the
appearance, please confirm in the display screen after power turning on.
1.4 Selection of location for installation
In order to obtain the maximum performance of the units, it is necessary to install them in
consideration of matters as described below.
1.4.1 Antenna-Scanner unit
(1) Blind sectors shall be kept to a minimum, and shall not be placed in an arc of the horizon from
the right ahead direction to 22.5° abaft the beam and especially shall avoid the right ahead
direction (relative bearing 000°). The installation of the antenna shall be in such a manner that
the performance of the radar system is not substantially degraded. The antenna shall be
mounted clear of any structure that may cause signal reflections, including other antenna and
deck structure or cargo. In addition, the height of the antenna shall take account of target
detection performance relating to range of first detection and target visibility in sea clutter.
(2) Keep the surface of the antenna unit platform horizontal as much as possible.

Chapter 1 Prior to installation MDC-2900 Series
1-2 0092629012-00
(3) The antenna unit should be installed in front of large objects or exhaust stack to prevent a
blind sector or the effects on the antenna by engine exhaust soot.
(4) Keep sufficient maintenance area.
(5) Keep safety distance from magnetic compass.
Table 1.1 Safety distance of compass from the Scanner unit
Scanner unit type Standard compass Steering compass
RB717A 1.4 m 0.95 m
RB718A 1.4 m 0.95 m
RB719A 1.2 m 0.65 m
1.4.2 Display unit and Operation unit
(1) The orientation of the display unit shall be such that the user is looking ahead, the lookout
view is not obscured and there is minimum ambient light on the display viewing surface.
(2) Choose the best location from humidity, spray, rain, and direct sunlight.
(3) Keep sufficient maintenance area. Especially sufficient space is required near the back panel
where cables are concentrated.
(4) Keep as far as possible from other radio devices.
(5) Keep a safe distance from the magnetic compass.
Figure 1.2 Safety distance of compass from display unit
Display unit type Standard compass Steering compass
MRD-105 1.2 m 0.8 m
MRM-105 1.2 m 0.8 m
1.5 Cable wiring and interconnection
1.5.1 Antenna-Scanner unit
(1) The connecting cable between the antenna-Scanner unit and the display unit should run apart
from any other radio antenna cable or power cables of the other devices. Do not lay the radar
cable together with other cables. These considerations are effective to prevent random radio
interference between systems. When these measures cannot be applied because of space
limitations, use metal pipes for each cable or other another suitable way to shield.
(2) The cable length between antenna unit and the display unit and power cable should be as
short as possible in nominal length to get the maximum performance of the radar system.
(3) Connect the shielded braided wire of the antenna cable to the grounding terminal inside the
antenna unit.
1.5.2 Display unit
(1) Ground the braided wire of a cable firmly with the cable clamp fixing screw to the back panel.
(2) The display unit housing should be grounded to the ship ground.

MDC-2900 Series Chapter 2 System configurations
0092629012-00 2-1
Chapter 2 System configurations
2.1 Standard configuration list
MDC-2960
No. Name Type Comment
Weight/
Length
Quantity
RW701A-04 4 ft 6 kg
RW701A-06 6 ft 8 kg
1 Antenna
RW701B-09 9 ft
12 kg
1
2 Scanner unit RB717A 6 kW 17 kg 1
3 Display unit MRD-105 15 kg 1
4 Operation unit MRO-105 1.8 kg 1
5 Connecting cable 242J159098B-15M With a connector on the
both sides
15 m 1
6 Power cable CW-259-2M With a connector on the
single side
2 m 1
7 Spare parts SP-100 1 set
8 Installation material M12-BOLT.KIT See installation material
list
1 set
9 Document MDC-2900SER.OM.E Operation manual 1
10 Document MDC-2900SER.IM.E Installation manual 1
MDC-2910
No. Name Type Comment
Weight/
Length
Quantity
RW701A-04 4 ft 6 kg
RW701A-06 6 ft 8 kg
1 Antenna
RW701B-09 9 ft
12 kg
1
2 Scanner unit RB718A 12 kW 17 kg 1
3 Display unit MRD-105 15 kg 1
4 Operation unit MRO-105 1.8 kg 1
5 Connecting cable 242J159098B-15M With a connector on the
both sides
15 m 1
6 Power cable CW-259-2M With a connector on the
single side
2 m 1
7 Spare parts SP-100 1 set
8 Installation material M12-BOLT.KIT See installation material
list
1 set
9 Document MDC-2900SER.OM.E Operation manual 1
10 Document MDC-2900SER.IM.E Installation manual 1

Chapter 2 System configurations MDC-2900 Series
2-2 0092629012-00
MDC-2920
No. Name Type Comment
Weight/
Length
Quantity
RW701A-04 4 ft 6kg
RW701A-06 6 ft 8 kg
1 Antenna
RW701B-09 9 ft
12 kg
1
2 Scanner unit RB719A 25 kW 21 kg 1
3 Display unit MRD-105 8.2 kg 1
4 Operation unit MRO-105 1.8 kg
5 Connecting cable 242J159098B-15M With a connector on the
both sides
15 m 1
6 Power cable CW-259-2M With a connector on the
single side
2 m 1
7 Spare parts SP-100 1 set
8 Installation material M12-BOLT.KIT See installation material
list
1 set
9 Document MDC-2900SER.OM.E Operation manual 1
10 Document MDC-2900SER.IM.E Installation manual 1
MDC-2960BB
No. Name Type Comment
Weight/
Length
Quantity
RW701A-04 4 ft 6 kg
RW701A-06 6 ft 8 kg
1 Antenna
RW701B-09 9 ft 12 kg
1
2 Scanner unit RB717A 6 kW 17 kg 1
3 Processor unit MRM-105 12.4 kg 1
4 Operation unit MRO-105 2 kg
5 Display unit
6 Connecting cable 242J159098B-15M With a connector on the
both sides 15 m 1
7 Power cable CW-259-2M With a connector on the
single side 2 m 1
8 Spare parts SP-100 1 set
9 Installation material M12-BOLT.KIT See installation material
list
1 set
10 Document MDC-2900SER.OM.E Operation manual 1
11 Document MDC-2900SER.IM.E Installation manual 1

MDC-2900 Series Chapter 2 System configurations
0092629012-00 2-3
MDC-2910BB
No. Name Type Comment Weight/
Length
Quantity
RW701A-04 4 ft 6 kg
RW701A-06 6 ft 8 kg
1 Antenna
RW701B-09 9 ft
12 kg
1
2 Scanner unit RB718A 12 kW 17 kg 1
3 Processor unit MRM-105 12.4 kg 1
4 Operation unit MRO-105 2 kg
5 Display unit
6 Connecting cable 242J159098B-15M With a connector on the
both sides 15 m 1
7 Power cable CW-259-2M With a connector on the
single side 2 m 1
8 Spare parts SP-100 1 set
9 Installation material M12-BOLT.KIT See installation material
list
1 set
10 Document MDC-2900SER.OM.E Operation manual 1
11 Document MDC-2900SER.IM.E Installation manual 1
MDC-2920BB
No. Name Type Comment
Weight/
Length
Quantity
RW701A-04 4 ft 6 kg
RW701A-06 6 ft 8 kg
1 Antenna
RW701B-09 9 ft 12 kg
1
2 Scanner unit RB719A 25 kW 21 kg 1
3 Processor unit MRM-105 12.4 kg 1
4 Display unit
5 Operation unit MRO-105 2 kg
6 Connecting cable 242J159098B-15M With a connector on the
both sides 15 m 1
7 Power cable CW-259-2M With a connector on the
single side 2 m 1
8 Spare parts SP-100 1 set
7 Installation material M12-BOLT.KIT See installation material
list
1 set
10 Document MDC-2900SER.OM.E Operation manual 1
11 Document MDC-2900SER.IM.E Installation manual 1

Chapter 2 System configurations MDC-2900 Series
2-4 0092629012-00
2.2 Spare parts list
SP-100
No. Name Specification Comment Type
(Dimension)
Quantity Usage
1 Fuse F-1065-15A Normal type Tubular
(· 6.3 x 32)
1 Main power
2 Fuse MF51NN250V5A Normal type Tubular
(· 5 x 25)
1 Motor power
3 Fuse F-7142-0.3A Normal type Tubular
(· 5 x 25)
1 High voltage power
supply
4 Carbon brush 24Z125209B 1 set Antenna motor
2.3 Installation material list
M12-BOLT.KIT
No. Name Specification Quantity Usage
1 Hexagon bolt B12X55U 4 Antenna unit
2 Nut N12U 8 Antenna unit
3 Plain washer 2W12U 8 Antenna unit
4 Spring washer SW12U 4 Antenna unit

MDC-2900 Series Chapter 2 System configurations
0092629012-00 2-5
2.4 Options
(Common)
No. Name Specification Comment Weight
/Dimension
/Quantity
1 Gyro converter S2N Gyro converter qwerty-electronik
2 Log pulse NMEA
converter
L1N 9181 qwerty-electronik
PS-010 5A fuse attached 3.5 kg3 Rectifier unit
VL-PGS001 VEINLAND GmbH
for RW701B-09
4 ac power cable VV-2D8-3M Without a connector on the
both sides
3 m
CW-373-
select 5M or10M,30M
With 6 pin-waterproof
connector on the both sides
(cable for data)
5 m or 10 m,
30 m
CW-374-5M With 6 pin-waterproof/6 pin
（1006 series）
(cable for data)
5 m
CW-406-5M 8pin-waterproof/
left unattended
(cable for THD)
5 m
CW-376-5M 6 pin-waterproof/
left unattended
(cable for data)
5 m
CW-387-5M 8 pin-waterproof/
left unattended
(cable for AIS)
5 m
CW-561-
select 10M or 30M
With a connector on the
both sides
(connector for remote
display)
10 m or 30 m
CW-576-0.5M 10 pin- waterproof
/D-SUB(female) + Alarm
out
0.5 m
5 Connecting cable
CW-560-2M With D-SUB on the both
sides
Cable for external display
unit
2m
242J159098C-20M With a connector on the
both sides
20 m
242J159098D-30M With a connector on the
both sides
30 m
5 Antenna-Scanner unit
and Display unit
connecting cable
242J159098E-XM With a connector on the
both sides
65 m Max.
(Designated)

Chapter 2 System configurations MDC-2900 Series
2-6 0092629012-00
2.5 MDC-2960/2910/2920 series system configuration
Display unit
MRD-105
Connecting cable
242J159098B-15M (Standard)
242J159098C-20M
242J159098D-30M
242J159098E-**M （65 m Max.）
Scanner unit
RB717A
RB718A
RB719A
Power cable
CW-259-2M
Rectifier
PS-010
or
VL-PGS001
Inboard dc power source
21.6 - 41.6V DC (MDC-2920) Inboard ac power source
100/115V AC
200/230V AC
A
C power cable
VV-2D8-3M
Ext Buzzer
Operation unit
MRO-105.E
GPS Compass
S2N Gyro converter
A
IS
CW-376-5M
CW-376-5M
CW-406-5M
CW-406-5M
CW-387-5M
CW-576-0.5M
Remote display
MRD-105
+MRO-105
CW-373-10M
CW-561-10M
External monitor
A
nalog XGA
CW-560-2M
J9
J1
J2
J3
VDR
CW-560-2M
GYRO SYNCHRO
or step signal
LOG pulse
J4
GYRO NMEA
signal
CW-406-5M
NAV
J5 EPFS
J6 L1N Log pulse NMEA
converter
SDME
Antenna
RW701A-04
RW701A-06
RW701B-09

MDC-2900 Series Chapter 2 System configurations
0092629012-00 2-7
2.6 MDC-2960BB/2910BB/2920BB series system configuration
Processor unit
MRM-105
Connecting cable
242J159098B-15M (Standard)
242J159098C-20M
242J159098D-30M
242J159098E-**M (65m Max.)
Antenna
RW701A-04
RW701A-06
RW701B-09
Scanner unit
RB717A
RB718A
RB719A
Power cable
CW-259-2M
Rectifier
PS-010
or
VL-PGS001
Inboard dc power source
21.6 - 41.6V DC (MDC-2920BBP)
Inboard ac power source
100/115V AC
200/230V AC
A
C power cable
VV-2D8-3M
GPS Compass
S2N Gyro converter
A
IS
CW-376-5M
CW-376-5M
CW-406-5M
CW-406-5M
CW-387-5M
CW-576-0.5M
Remote display
MRD-105
+MRO-105
CW-373-10M
CW-561-10M
External monitor
A
nalog XGA
CW-560-2M
J9
J1
J2
J3
VDR
CW-560-2M
A
larm out
GYRO SYNCHRO
or step signal
LOG pulse
Operation unit
MRO-105.E
J4
SXGA
Monitor Display
GYRO NMEA
signal
CW-406-5M
NAV
J5 EPFS
J6 L1N Log pulse NMEA
converter
SDME
CW-376-5M
CW-376-5M

MDC-2900 Series Chapter 3 Method of installation
0092629012-00 3-1
Chapter 3 Method of installation
3.1 How to install the Antenna-Scanner unit
3.1.1 Installation of the Antenna-Scanner unit
The Antenna-Scanner unit is equipped to orient the notch of the attachment to stern as shown in
Figure 3.1. Installation in this way eases maintenance work. Also refer to the consideration on
equipment shown in 1.4.1.
(1) Four mounting hole 14mm in diameter are made in the attachment side on the platform with
reference to Figure 3.1.
(2) The Antenna-Scanner unit is put on the location secured with four 12mm stainless steel bolts
contained in installation material.
Unit: mm (inch)
100
φ
RA774UA
Figure 3.1 Plain view of mounting hole
199
(7.83 in.)
185
(7.28 in.)
(0.55 in.)
(3.97 in.)
Notch of Scanner
Heading
Antenna rotating radius
R700 (4 ft Antenna unit)
R1000 (6 ft Antenna unit)
R1400 (9 ft Antenna unit)
14φx 4
Cable opening
Figure 3.2 Assembly of Scanner unit base
Mounted with four bolts
Double nut
Spring washe
r
Washer
M12 bolt
Platform
Scanner unit base
Washer
Anti-electro corrosive washer
Anti-electro corrosive washer

Chapter 3 Method of installation MDC-2900 Series
3-2 0092629012-00
3.1.2 Mounting antenna
(1) Remove the protection cap put on the outlet of the rotating joint on the Scanner.
(2) Remove the four bolts temporarily fastened to the antenna base and attach the antenna to the
rotating joint. Face the antenna aperture side (with the company logo) with the orientation of
the directional arrow on the rotating shaft.
(3) Secure the antenna with four bolts removed above.
Figure 3.3 Antenna assembling to the rotating shaft
Aerial opening
Aerial
Rotating shaft
Arrow mark
Protection cap
Rotating shaft
Washer
Spring washer
Mounting bolt

MDC-2900 Series Chapter 3 Method of installation
0092629012-00 3-3
3.1.3 Connecting the cable
(1) Remove front and back covers of Scanner unit by loosing four mounting bolts.
(2) Pull out the Scanner unit by loosing two mounting bolts and disconnect each connector. Be
careful not to lose metal parts to the magnetron magnet.
(3) Remove cable retainer (circular), washer and waterproof rubber gasket from the antenna
cable.
(4) Route the interconnecting cable into the enclosure through the cable port of its bottom.
(5) Replace the cable retainer, washer and rubber gasket removed in (3) above, to the
interconnecting cable in the order shown in Figure 3.4.
(6) Secure the cable with the retainer as follows. First secure only two clamps of the cable retainer,
and then fasten the braided wire (with terminal) from the interconnecting cable together with
the remaining bolts on the retainer.
(7) Secure the interconnecting cable with cable clamps on the Scanner chassis.
(8) Connect the interconnecting cable to the Scanner. (Refer to the connection diagram of Figure
3.5 for the further description of an interconnection)
Figure 3.4 Connection of cable to Scanner unit
Scanner base
Scanner unit Fixed
bolt
Remove these connectors
Clamp bolt
Clamp plate
Interconnecting cable
Clamp
Not more than 5 mm
Clamp bolt
Braided wire to ground
Washer
Clamp plate
Interconnecting
bl
Rubber gasket
Cable opening
Fasten braided wire by the clamp
plate in minimum length
Remove heat shrinkable tube

Chapter 3 Method of installation MDC-2900 Series
3-4 0092629012-00
3.2 Interconnection diagram of cable
Figure 3.5 Interconnection of cable between Antenna-Scanner unit and display unit
Antenna-Scanner unit Displayunit
P1 PX
Description Cable colour No. No. Cable colour Description
+250V Purple 1 1 Purple +250V
NC - 2 2 Blue +24V
GND Yellow 3 3 Orange (thick) +12V
+40V Red (thick) 4 4 Yellow GND
+40V Yellow (thick) 5 5 Shield DATA-RTN
+40V-RTN Green (thick) 6 6 Red (coax) DATA
+40V-RTN Blue (thick) 7 7 - -
8 Brown (coax) BP/SHF
P2
9 Shield BP/SHF-RTN
Description Cable colour No. 10 Grey (coax) V/TRIG
+24V Blue 1 11 -
NC - 2 12 Red (thick) +40V
+12V Orange (thick) 3 13 Yellow (thick) +40V
DATA-RTN Shield 4 14 Shield V/TRIG-RTN
DATA Red (coax) 5 15 Green (thick) +40V-RTN
BP/SHF-R Shield 6 16 Blue (thick) +40V-RTN
BP/SHF Brown (coax) 7
V/TRIG-RTN Shield 8
V/TRIG Grey (coax) 9
Ground terminal
GND Shield 1