Icom MR-1200RII, MR-1200TII, MR-1200TIII Instruction Manual

INSTRUCTION MANUAL

MARINE RADAR

MR-1200R™

(Radome type)

MR-1200T™

(Open array type; 4 kW)

MR-1200T

(Open array type; 6 kW)

SYSTEM COMPONENTS

MODEL NAME LCD DISPLAY SCANNER UNIT

MR-1200RII

MR-1200TII EX-2780 (Open array type; 4 kW)

MR-1200TIII EX-2780 (Open array type; 6 kW)

SX-3230

(12.1-inch LCD)

SUPPLIED ACCESSORIES

• EX-2714 (Radome type unit)
Qty.

q System cable (15 m) ........................................... 1

w Installation bolts (M10×50) .................................. 4

e Installation bolts (M10×25) .................................. 4

r Installation nuts (M10) ......................................... 4

t Flat washers (M10) ............................................. 4

y Spring washers (M10) ......................................... 4

• EX-2780 (Open array type unit)
Qty.

q System cable (20 m) ............................................ 1

w Installation bolts (M10×40) .................................. 4

e Installation nuts (M10) ......................................... 4

r Flat washers (M10) ............................................. 4

t Spring washers (M10) ......................................... 4

y Hex head wrench ................................................ 1

u Cap bolts (M8×18) .............................................. 4

i Dish washers (M8) .............................................. 4

o Sealing washers (T) ............................................ 4

!0 Flat washers (M8) ............................................... 4

!1 Grounding terminal ............................................. 1

!2 Ferrite EMI filter .................................................. 1

EX-2714 (Radome type)

• SX-3230 (12.1-inch LCD display unit)
Qty.

q Front cover ........................................................... 1

w NMEA connector (PLT-167-P-R) ......................... 1

e NMEA connector (PLT-168-P-R) .......................... 1

r Spare fuse (FGB 15 A) ....................................... 1

t Spare fuse (FGB 5 A: for over 24 V power supply)

........................................................................... 1

y DC power cable ................................................... 1

u Mounting bracket ................................................. 1

i Mounting knob bolts ............................................ 2

o Installation bolts (M6×30) .................................... 5

!0 Installation nuts (M6) ............................................ 5

!1 Spring washers (M6) ......................................... 10

!2 Flat washers (M6) ............................................. 10

!3 Instruction manual ............................................... 1

!4 Operating guide ................................................... 1

i

The MR-1200RII/TII/TIII are supplemental aids to navigation and are not intended to be a
substitute for accurate and current nautical charts.

FOREWORD

Thank you for purchasing Icom’s MR-1200RII/TII/TIII

m a r i n e r a d a r .

The radar is designed especially for fishing boats.
It has powerful transmitting power, a 12.1-inch LCD
display and many other advanced features.

If you have any questions regarding the operation of
the radar, contact your nearest authorized Icom Inc.
dealer.

IMPORTANT

READ T H IS I N S T RUCTION M A N UAL
CAREFULLY

radar.

SAVE THIS INSTRUCTION MANUAL. This

manual contai ns impor tant safety and operating
instructions for the MR-1200RII/TII/TIII.

before attempting to operate the

BE CAREFUL!

SART signals may not be detected and may

not be displayed on the screen depending
on the SEA, RAIN or IR settings.

Follow the settings as below to detect the
SART signals on the screen.

q Select the screen range between 6 NM

to 12 NM with [+/–]. (p. 1)

w Set the [GAIN] as high as possible. (p. 2)
e Set the [SEA] to minimum. (p. 2)
r Set the [RAIN] to minimum. (p. 2)
t Turn OFF the [IR] function. (p. 11)
y Turn OFF the [STRETCH] function.

(p. 11)

EXPLICIT DEFINITIONS

WORD DEFINITION

R

DANGER!

R

WARNING!

CAUTION Equipment damage may occur.

NOTE

Personal death, serious injury or an
explosion may occur.

Personal injury, fire hazard or electric
shock may occur.

If disregarded, inconvenience only.
No risk of personal injury, fire or
electric shock.

Icom, Icom Inc. and the Icom logo are registered
trademarks of Icom Incorporated (Japan) in Japan, the
United States, the United Kingdom, Germany, France,
Spain, Russia and/or other countries.

ii

PRECAUTIONS

For Display unit:

R

WARNING! NEVER let metal, wire or other

objects touch any internal part of the display unit. This
may result in an electric shock.

R

WARNING! NEVER apply AC voltage to the

DC connector of the display unit. This may pose a fire
hazard, result in an electric shock or damage the dis­play unit.

R

WARNING! NEVER apply more than 42 V DC

to the DC connector of the display unit. This may pose
a fire hazard or damage the display unit.

R

WARNING! NEVER touch the display unit with

wet hands. This may result in an electric shock or dam­age the display unit.

R

WARNING! NEVER open the display unit.

There are no user adjustment points. This may result in
an electric shock and incorrect reassembly may cause
a fire hazard.

CAUTION: NEVER connect the display unit to a

DC power source using reverse polarity. This will dam­age the display unit.

CAUTION: NEVER remove the fuse holder from

the DC power cable. This will damage the display unit.

DO NOT place the display unit in excessively dusty

environments.

DO NOT place the display unit near heating equip-

ment or in direct sunlight or where hot or cold air blows
directly onto it.

DO NOT use or place the display unit in areas with

temperature below –15˚C (+5˚F) or above +55˚C
(+131˚F).

DO NOT use harsh solvents such as benzine or alco-

hol when cleaning the display unit, as they will damage
the display unit’s surfaces.

DO NOT place the display unit in areas that will block

air passage or put anything around the display unit.
This will obstruct heat dissipation.

KEEP the display unit out of the reach of children.
KEEP the display unit away from heavy rain, and

never immerse it in the water.
The display unit meets IPX4 requirements for splash
resistance when the supplied connection cable, scan­ner unit are connected.
However, if it is dropped, splash resistance cannot be
guaranteed because of possible damage to the case
or the waterproof seals.

The LCD display may have cosmetic imperfections
that appear as small dark or light spots. This is not a
malfunction or defect, but a normal characteristic of
LCD display.

For Scanner unit:

R

DANGER: HIGH VOLTAGE! NEVER open

the scanner unit. The scanner unit contains high volt­age that could be fatal. And there are no user adjust­ment points. All repairs and adjustments MUST be
made by a qualified electronics technician at your
Marine Navigation Dealer.

For qualified electronics technician only:

R

DANGER: HIGH VOLTAGE! High volt-

ages of up to 3,500 volts are used in the scanner
unit. Although prudent measures for safety have
been adopted, sufficient care must be taken in
the operation, maintenance and adjustment of the
scanner unit.
Electric shock of 1,000 volts or more may cause
electrocution and death; even an electric shock of
only 100 volts may be fatal.

R DANGER: HIGH VOLTAGE! To prevent

an electric shock, turn the
do not reach inside the scanner unit until you have:

• discharged the capacitors by disconnecting the system

cable from the radar unit for 5 minutes.

• checked that no electric charges remain inside the de­vice.

Also, it is safest to wear dry insulated rubber gloves.
NEVER use both hands simultaneously; keep one
hand in your pocket.

R

WARNING: RADIATION HAZARD!

Radiation emitted from the scanner unit can be
harmful, particularly to the eyes. To avoid harm­ful radiation, turn
beginning work on the scanner unit.

the radar’s power is OFF

radar

’s power is OFF and

before

DO NOT use or place the scanner unit in areas with

temperature below –25˚C (–13˚F) or above +70˚C
(+158˚F).

NEVER immerse the scanner unit in the water.

The scanner units meet IPX6* requirements for high­pressure water jet resistance.
However, if these items are dropped, high-pressure
water jet resistance cannot be guaranteed because
of possible damage to the cases or the waterproof
seals.

*

Except for the cable connectors. They meet IPX4 require­ments while connecting to the radar unit.

iii

TABLE OF CONTENTS

SYSTEM COMPONENTS ......................................... i

SUPPLIED ACCESSORIES ...................................... i

FOREWORD ............................................................ ii

IMPORTANT ............................................................. ii

EXPLICIT DEFINITIONS .......................................... ii

PRECAUTIONS ....................................................... iii

TABLE OF CONTENTS ........................................... iv

1 PANEL DESCRIPTION .................................. 1–4

■ Front panel ...................................................... 1

■ Screen ............................................................ 3

2 MENU ............................................................. 5–7

■ VIDEO MENU .................................................. 5

■ FUNCTION MENU........................................... 5

■ ATA AIS MENU ................................................ 6

■ TARGET MEMU ............................................... 7

■ INT. SETTING MENU ...................................... 7

3 BASIC OPERATION .................................... 8 –13

■ Checking the installation ................................. 8

■ Turning power ON/OFF .................................... 8

■ Basic operation ............................................... 9

■ RAIN function................................................. 10

■ SEA function .................................................. 10

■ OFF CENTER function .................................. 10

■ IR function ..................................................... 11

■ STRETCH function ....................................... 11

■ ZOOM function ............................................. 11

■ TRAILS function ............................................ 12

■ Power save function ...................................... 12

■ Ship speed indication .................................... 13

■ Position indication ......................................... 13

■ Waypoint indication ........................................ 13

■ Long pulse function........................................ 13

■ Bearing setting .............................................. 13

4 DISTANCE AND DIRECTION

MEASUREMENTS ..................................... 14–16

■ Distance measurement ................................. 14

■ Bearing and Distance measurement ............ 15

■ Advanced measurements ............................. 16

5 ALARM FUNCTION ......................................... 17

■ Alarm zone setting ........................................ 17

■ Zone alarm setting ........................................ 17

6 ATA/AIS ...................................................... 18–24

■ ATA (Automatic Tracking Aid) ........................ 18

■ ATA settings .................................................. 18

■ ATA operation ................................................ 19

■ Plotting marks ............................................... 20

■ Course and speed vector .............................. 20

■ Plots (ATA) ..................................................... 20

■ AIS (Automatic Identification System) .......... 21

■ AIS settings ................................................... 22

■ AIS operation ................................................ 23

■ Status of the Vessel icon ................................ 24

■ Plots (AIS) ..................................................... 24

7 BASIC RADAR THEORY .......................... 25– 27

■ Side-lobe echoes .......................................... 25

■ Indirect echoes ............................................. 25

■ Multiple echoes ............................................. 26

■ Minimum range ............................................. 26

■ Blind and Shadow sectors ............................ 27

■ Target resolution ............................................ 27

8 INSTALLATION AND CONNECTIONS ..... 28–34

■ Connecting the units ..................................... 28

■ Power source requirement ............................ 28

■ Ground connection ........................................ 28

■ Installing the display unit ............................... 29

■ Mounting the EX-2714 scanner unit ............. 30

■ Wiring the EX-2714 system cable ................. 31

■ Mounting the EX-2780 scanner unit ............. 32

■ Wiring the EX-2780 system cable ................. 33

■ Attaching the EX-2780 scanner unit ............. 34

9 OTHER FUNCTIONS ....................................... 35

10 SERVICE MAN MENU ............................... 36–38

■ Service man menu ........................................ 36

■ Select the language ...................................... 36

■ TIMING adjustment ....................................... 37

■ HDG adjustment ............................................ 37

■ SPD adjustment ............................................. 38

■ RANGE selection ........................................... 38

11 ERROR MESSAGE .......................................... 39

■ Error message list ......................................... 39

■ AIS error message list .................................. 39

12 MAINTENANCE ................................................ 40

■ Periodic maintenance ................................... 40

■ Scanner unit maintenance ............................ 40

■ Display unit maintenance .............................. 40

■ Options ......................................................... 40

13 SPECIFICATIONS ...................................... 41–42

14 EXTERNAL DATA LIST ................................... 43

(Supplement) TEMPLATE
■ Template for the display unit

• SX-3230 (Display mount bracket template)

■ Template for the scanner unit

• EX-2714

• EX-2780

iv

1

TX

SAVE

TARGET TRAILS

MODEALM

+

-

MOB

MENU

EBL2

VRM2

EBL1
VRM1

BRILL

ZOOM

OFF CENT

HL OFF

GAIN

SEA

RAIN

POWER

MOB

GAIN

SEA

RAIN

POWER

TX

SAVE

TARGET

TRAILS

ZOOM

ALM

MODE

OFF CENT

EBL1
VRM1

BRILL MENU

HL OFF

EBL2

VRM2

AIS

TLL

AUTO

MARINE RADAR

MR-1200

e

r

q

w

t

u

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y

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!2

!3

!4

!5

!6

!7

!8

!9

@0

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r

q

w

t

u

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!1

y

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!2

!3

!4

!5

!6

!7

!8

!9

@0

!0 !0

Control panel (English) Control panel (Chinese)

PANEL DESCRIPTION

■ Front panel

q POWER SWITCH [POWER]/[ ] (p. 9)
Push to turn the radar power ON or OFF.

• The standby screen appears for 90 seconds while the

magnetron warms up.

• The initial screen appears and a beep sounds after the

power has been turned ON.

w TRANSMIT/SAVE SWITCH [TX (SAVE)]/

[ ]

➥ Push to toggle between the TX mode and the

standby mode. (p. 9)

➥ Hold down for 1 second to turn ON the power

save function. The radar for TX interval scan is
fixed at 10 revolutions. (p. 12)

• Select the save time in the INT. SETTING menu.

e RANGE UP/ DOWN SWITCHES [+]/[–]/

[ ]/[ ] (p. 9)

Push [+] to increase the screen range.
Push [–] to decrease the screen range.

r UP, DOWN, LEFT, RIGHT KEYS [p] [q] [t] [u]
Set the EBLs, VRMs, alarm area, ATA target, AIS

target and so on.

In the Menu screen, push [p] or [q] to select the

menu items, and then push [t] or [u] to select the
option or set the value.

In the normal operating mode, push a combination

of the [p]/[t] or [p]/[u], or [q]/[t] or [q]/[u] to
move the cross line cursor to the upper left or right,
or lower left or right.

t TRAILS SWITCH [TRAILS]/[

➥ Push to toggle the trail function ON or OFF. This

is useful for watching other ship’s tracks, and ap­proximate relative speed.

• Trail Time can be set in the VIDEO menu.
➥ Hold down for 1 second to output the position

information where the cursor is placed, to the
NMEA output terminals.

• TLL output requires bearing data and position data.

y ZOOM FUNCTION [ZOOM]/[ ] (p. 11)
Simultaneously push [TARGET]/[ ] and [TRAILS]/

[ ] to toggle the ZOOM function ON or OFF.
The ZOOM function enlarges the target to two times
normal size.

• Move the cursor to the target, then turn ON the function.

• The screen zooms the middle of the screen around your

• This function is not usable in the

u MODE SWITCH [MODE]/[ ]

Push to select the Head-up (H UP), Course-up (C

UP), North-up (N UP) or True motion (TM) screens.

• The North-up and Course-up screens can be selected

own ship.

higher ranges.

only when a bearing data input is connected. (pp. 28,

43)

• The TM screen requires bearing data and LOG or posi-

• TheTM screen is not selectable in the 32 NM or higher

tion data. (pp. 28, 43)

range.

] (p. 12)

1

⁄8 and the 32 NM or

1

PANEL DESCRIPTION

1

i OFF CENTER FUNCTION [OFF CENT]/[

]

(p. 10)

Simultaneously push [ALM]/[ ] and [MODE]/

[ ] to turn the OFF CENTER function ON or
OFF.

• This function is usable in the 24 NM or less ranges.

o EBL2 (VRM2) SWITCH [EBL2 (VRM2)]/

[ ] (pp. 15, 16)

Push to display the electronic bearing line 2 (EBL2)

and the variable range marker 2 (VRM2), and ac­tivate the [t] or [u] for the electronic bearing line
selector and [p] or [q] for the range marker selec­tor.

• When VRM1 and EBL1 ($9 %2) are displayed, the center

of VRM2 appears at the intersection point of VRM1 and
EBL1.

!0 AIS OPERATING MODE SELECTION [AIS]

(p. 24)

➥

Simultaneously push [EBL1(VRM1)]/[ ]
and [EBL2(VRM2)]/[ ] to toggle between
the AIS operating mode and the normal operating
mode.

➥ Hold down [EBL1(VRM1)]/[ ] and

[EBL2(VRM2)]/[ ] for 1 second to
toggle between the AIS display ON and OFF.

!1 MENU SWITCH [MENU]/[

] (pp. 5–7)

Push [MENU]/[ ] to select the VIDEO, FUNC-

TION, ATA AIS, TARGET, INT. SETTING or SER­VICE MAN menus. Push [p] or [q] to select the
items and push [t] or [u] to change the setting.

!2 HEADING LINE OFF FUNCTION [HL OFF]/

[

] (p. 9)

While holding down [BRILL]/[ ] and [MENU]/

[ ], the heading line is temporarily turned OFF.

!3 GAIN CONTROL [GAIN]/[

] (p. 9)

Adjusts the receiver amplifier gain.

• Clockwise rotation increases the gain.

• Increased gain may increase screen noise.

!4

SEA CLUTTER CONTROL [SEA]/[ ] (p. 10)

This function serves to eliminate echoes from

waves in close range.

Reduces the receiver gain for close objects within a

radius of approximately 8 nautical miles to eliminate
sea clutter.

Rotate the control fully clockwise to activate the

automatic SEA control function. The SEA indicator

( )

appears in the upper left of the screen.

• Under normal conditions set the SEA to minimum.

• Use this control with caution when the sea is rough.

!5

RAIN CLUTTER CONTROL [RAIN]/[ ] (p. 10)

This function eliminates echoes from rain, snow,

fog, and so on.

Rotate the control fully counter clockwise to deacti-

vate the RAIN function.

The RAIN indicator (

) disappears.

!6 MAN OVERBOARD [MOB]/[

]

Push to mark the man overboard point on the

screen. When a crew member falls overboard, hold
down [MOB]/[ ] for 1 second to display the MOB
symbol ( ) on the screen.

• The MOB readout shows the bearing, distance and es­timated time to the MOB point at the current speed.

• Hold down [MOB]/[

function.

• Position and bearing data are necessary.

] for 1 second to cancel the

!7 TARGET SWITCH [TARGET]/[ ] (pp. 19, 23)
❍ Operating in the AIS mode
➥Push to select a target.
➥Hold down for 1 second to toggle the selected

target between activated or sleeping.
❍ Operating in any other mode
➥Push to select the desired ATA target data (1

to 10, or OFF).
➥Hold down for 1 second to set the target as

caught or released.

!8 ALARM SWITCH [ALM]/[

] (p. 17)

➥Push [ALM]/[ ] to toggle the alarm function

ON or OFF.

➥Hold down [ALM]/[ ] for 1 second to enter the

alarm area setting mode.

• Push [p], [q], [t] or [u] to move the cross cursor to

the zone starting point, then hold down [ALM]/[
for 1 second. The starting ring of the zone is created.
Then push [p], [q], [t] or [u] to fix the finish point,
and then push [ALM]/[
will automatically form.

]. The desired alarm zone

!9 EBL1 (VRM1) SWITCH [EBL1 (VRM1)]/

[ ] (pp. 15, 16)

Push to display the electronic bearing line 1 (EBL1)

and the variable range marker 1 (VRM1) and acti­vate [t] or [u] for the electronic bearing line selec­tor, and [p] or [q] for the range marker selector.

• EBL1 bearing and VRM1 distance are displayed in the

bottom window.

• When EBL1 and VRM1 are displayed, the beginning

of EBL2 appears at the intersection point of EBL1 and
VRM1.

@0 DISPLAY BRILLIANCE SWITCH [BRILL]/[ ]

(p. 9)

➥ Push to increase or decrease the brilliance of the

picture on the display.

➥ Hold down for 1 second to select maximum bril-

liance.

➥ The display color changes between green and

red if you continue to hold down this key after the
display is set to maximum brilliance.

The brightness of the symbols, characters and il-

luminations can be independently adjusted in the
“SYMBOL”, “CHARACTER” and “KEY ILLUM” of the
INT. SETTING menu.

]

2

1

AIS

:
:

:

:

(0.25)

MTUNE

TVECT

6M

0649NM

NM

CURS

STW

15 7

KT

H UP

0174

˚

R

TRAILS

253 0

˚T

HDG

IR

EBL1
EBL2
WPT

VRM1
VRM2

CURS

1076

˚

0219

˚

2834

˚

0422

NM

001
000

001

0242

NM

0632

NM

34

˚

39720N

135

˚

34420E

ZOOM

ALM

COMPASS

GPS

AIS

ES

005

3/4

#9

@1
@2

@3
@4

@5
@6
@7

@8
@9

#0
#1

#2

#3
#5

#4

#6
#7
#8

$0

$1

$2
$3

$4
$5

$6
$7

$8

$9

%0
%1

%2

%3

%4

%5

%6

%7

%8

%9

PANEL DESCRIPTION

■ Screen

@1 TUNING MODE INDICATOR (p. 9)

 “M.TUNE” appears when the manual tuning func-

tion is in use.

@2 FIXED RING RANGE READOUT (p. 14)
Shows the interval range of the fixed ring.

• This readout appears when “RING” in the FUNCTION

menu is turned ON.

@3 SCREEN RANGE READOUT (p. 14)
Shows the maximum range of the displayed screen.

• The range indicated is nautical miles (NM).

@4 SHIP SPEED READOUT (p. 13)
Shows the ship speed.

• SOG: When GPS is selected in the INT. SETTING

• STW: When LOG is selected in the INT. SETTING

@5 AUTO SEA INDICATOR (p. 10)
Appears when the automatic SEA control function

is turned ON.

@6 LONG PULSE INDICATOR (p. 13)

menu.

menu.

Appears when the long pulse is in use.

@9 HEADING LINE (p. 9)
The heading line indicates the ships bow direction.

#0 ALARM ZONE (p. 17)
Shows the alarm zone.

• Appears when the alarm function is in use.

#1 WAYPOINT MARKER (p. 13)
Shows the waypoint received from navigation equip-

ment.

• This marker appears when “WPT” in the FUNCTION

menu is turned ON.

• To display the waypoint marker, bearing data and

NMEA data in 0183 format is necessary. (p. 43)

#2 FIXED RANGE RINGS (p. 14)
Shows the distance at fixed intervals. The interval

distance is indicated by the ring range readout (@3).

• These rings appear when “RING” in the FUNCTION

menu is turned ON.

#3 AIS INDICATOR (p. 14)
Appears when a valid VDM sentence is input from

the NMEA (AIS) port. If more than the specified AIS
signals that is set in the “NUMBER OF AIS” setting
of the ATA AIS menu are received, this indicator

@7 RAIN CONTROL INDICATOR (p. 10)
Appears when the RAIN function is in use.

@8 MODE INDICATOR

Head-up, Course-up, North-up and True Motion

screens are available.

• N UP and C UP screens require external bearing data.

• TM screen requires bearing data and LOG or position

data.

3

changes to a reverse display (

The indicator disappears if the AIS signal is inter-

rupted for 6 minutes.

#4 GPS INDICATOR (p. 28)
Indicator appears when the NMEA (GPS) is con-

nected.

).

PANEL DESCRIPTION

1

#5 COMPASS/GYRO INDICATOR (pp. 28, 43)

• GYRO: NMEA (gyro) is connected.

• COMPASS: NMEA (compass), N+1 or AUX data is

connected.

#6 EBL1/ 2 READOUTS (pp. 15, 16)
Shows the bearing of the displayed Electronic Bear-

ing Lines (EBL1 and EBL2) when EBL is in use.

#7 WAYPOINT/MOB READOUTS (p. 13)
➥ Shows the bearing and distance to the waypoint

received from navigation equipment.

• This readout appears when “WPT” in the FUNCTION

menu is turned ON.

• To display the waypoint/MOB marker, bearing data

and NMEA data in 0183 format is necessary. (p. 43)

➥ Shows the bearing and distance to the MOB

(Man Over Board) event marker.

• Push [MOB]/[ ] to cancel the readout and the
symbol.

#8 POSITION/CURSOR READOUT (p. 13)
Shows your own ship or cursor latitude and longi-

tude readout when external NMEA data in 0183 for­mat is connected.

• Select ‘SHIP’ or ‘CURS’ in the “POSN DISP” item of the

FUNCTION menu.

• To display the POSITION, NMEA 0183 is necessary.

• To display the CURSOR, NMEA 0183 and bearing data

are necessary.

#9 TUNING LEVEL INDICATOR (p. 9)
Shows the receiver tuning level.

$0 CURSOR INDICATOR
Shows the bearing and distance to the cursor.

• R: Relative bearing, T: True Bearing, M: Magnetic bearing

$1 VECTOR INDICATOR (p. 19)
Shows the ATA, AIS and OWN vector type.

• T: True vector, R: Relative vector

$2 VECTOR TIME INDICATOR (p. 19)
Shows the vector time. Select vector time in “VECT

TIME” of the TARGET menu.

$3 TRAILS INDICATOR (p. 12)
Shows the trail time.

• The echo remains, with gradation, during the trail time

period on the screen. (Except for the trail time;

• Progressing time counter starts counting until the timer

reaches the trail time.

∞)

$4 HEADING INDICATOR
Shows the heading bearing readout.

• HDG: When “BRG INPUT” in the INT. SETTING menu is

selected “NMEA,” “N+1” or “AUX.”

• COG: When “BRG INPUT” in the INT. SETTING menu is

selected “GPS.”

• The HDG readout indicates the bow of the ship’s bear-

ing in a clockwise direction from north.

• R: Relative bearing, T: True Bearing, M: Magnetic bearing

$5 IR INDICATOR (p. 11)
Eliminates or reduces interference caused by other

radar operating nearby.

• This indicator appears when “IR” in the VIDEO menu is

set to 1 or 2.

$6 ECHO STRETCH INDICATOR (p. 11)
Appears when the echo stretch function is in use.

• This indicator appears when “STRETCH” in the VIDEO

menu is turned ON.

$7 CROSS LINE CURSOR
Used to measure the bearing and distance, setting

the alarm zone, selecting the ATA/AIS targets, and
so on.

• Push [p], [q], [t] or [u] one or more times to move

the cursor.

$8 OWN SHIP VECTOR INDICATOR

Shows the vector of your own ship.

$9 VRM 1 (pp. 15, 16)
%0 VRM 2 (pp. 15, 16)

Used to measure distance. When a target is se-

lected, the VRM1/2 readout (%4) shows its dis­tance.

%1 NORTH MARK
The north mark shows the true north direction.

%2 EBL1 (pp. 15, 16)
%3 EBL2 (pp. 15, 16)

Used to measure bearing. When a target is se-

lected, the EBL readout (#6) shows its bearing.

%4 VRM1/2 READOUTS (pp. 15, 16)
Shows the distance of the displayed Variable Range

Markers (VRM1 and VRM2) when the VRM is in
use.

• Nautical miles (NM) or kilometers (KM) can be selected

in the FUNCTION menu as the distance unit.

%5 ALARM INDICATOR (p. 17)
Appears when the alarm function is in use.

%6 ZOOM INDICATOR (p. 11)
Appears when the zoom function is in use.

• Push [TARGET]/[ ] and [TRAILS]/[ ] simul-
taneously to turn the function ON or OFF.

%7 TIME INDICATOR
%8 TIME INDICATOR

Shows the estimated time to the marker edge from

the center of the marker, at the current speed.

%9 TIME INDICATOR

Shows the estimated time to the waypoint at the

current speed.

4

2

VIDEO MENU

D.RANGE
IR
STRETCH
PULSE
SEA
TRAIL TIME

ON

1 2

MANUAL

AUTO

MID. WIDE
OFF

OFF

SP

6S

3M

15S6M30S

15M

1M

TUNE

1 2 34

NAR.

LP

FUNCTION MENU

POSN DISP

WPT ON

DIST UNIT
BRG
DIRECTION
ZONE ALARM
BEEP

MAG

PT/SB

KM

OUT

ON

OFF

CURS

NM
TRUE

TRUE

IN

RING

OFF

ON

OWN VECT

ON

OFF

SHIP

360

˚

R

OFF

The SERVICE MAN MENU is described in ‘Section 10 SERVICE MAN MENU.’ Please see Section 10 for details.

MENU

■ VIDEO MENU

DTUNE

• AUTO: Automatic tuning.

• “A.TUNE” appears for approximately 2 sec-

onds, instead of the screen display, when
first transmitting after turning ON the power.
The unit also retunes in some cases.

• MANUAL: Manual tuning.

q Push [u] to select [MANUAL], then

push [q] to activate the manual tuning
slider.

w Push [t] or [u] to adjust the desired

tuning level.

DD.RANGE

Select the dynamic range of the PPI (Plan Position In­dicator).

• NAR.: Narrow dynamic range. Even weak reec­tions are displayed as strong reections.

• MID.: Mid dynamic range.

• WIDE: Wide dynamic range. You can easily dis-

tinguish between weak reflections and

strong reections.

DIR

• OFF: Turn OFF the Interference Reduction

function.

•

1 or 2 (ON):

“IR” appears on the screen.

DSTRETCH

• OFF: Turn OFF the echo stretch function.

• ON: Turn ON the echo stretch function.

DPULSE

• SP: Select the pulse width to short.

• LP: Select the pulse width to long.

DSEA

• The SEA knob can be used to ne tune the sea clut-

ter of the display after one of our main levels are se­lected based on the height of the antenna and sea

5

conditions.

DTRAIL TIME

• 6S, 15S, 30S, 1M, 3M, 6M, 15M or

Select the trail time.

Turn ON the Interference Reduction func-

tion 1 (Low) or 2 (High).

“ES” appears on the screen.

“

” appears on the screen.

∞:

■ FUNCTION MENU

DRING

• OFF: Turn OFF the xed range ring display.

• ON: Turn ON the xed range ring display.

DWPT

• OFF: Do not display the waypoint on the screen.

• ON: Display the waypoint on the screen.

Waypoint, bearing and position data are re-

quired.

DPOSN DISP

• SHIP: Display your own ship’s position.*

• CURS: Display the cursor position.*

1

*

External latitude/longitude data required.

2

*

External latitude/longitude data and bearing data re-

quired.

DDIST UNIT

• NM: Display the distance unit in Nautical Miles.

• KM: Display the distance unit in Kilometers.

DBRG

Select the displayed bearing type, no relation with the
bearing data format (NMEA, N+1, AUX or GPS).

• TRUE: Select the true North bearing.

• MAG: Select the magnetic North bearing.

DDIRECTION (except HDG and CSE) (p. 15)

• TRUE: True or magnetic direction.

• 360°R: Relative direction

• PT/SB: Bow direction

DZONE ALARM

• IN: An alarm sounds when the target comes

into the zone.

• OUT: An alarm sounds when the target goes out

of the zone.

DBEEP

• OFF: Turn OFF* the beep tone.

• ON: Turn ON the beep tone.

* Except for the alarm function.

DOWN VECT

• OFF: Do not display your own ship’s vector.

• ON: Display your own ship’s vector.

Bearing data, position data and ship speed

are required.

1

2

■ ATA AIS MENU

ATA AIS MENU

ATA No.DISP OFF ALL

ON

OFF

ATA ALARM ONOFF
AIS DISPLAY ONOFF
AIS ALARM ONOFF
AIS RANGE 8.0NM
AUTO ACTIVATE

1.0NM

NUMBER OF AIS

100

SLOW WARN

0.1KT

LOST AIS TRGT

ERASE

SEL

ATA

DATA (Automatic Tracking Aid)

• OFF: Turn OFF the ATA function.

• ON: Turn ON the ATA function.

DATA No. DISP

Select the target identification number type that ap­pears at the right side of the mark.

• OFF: Do not display any mark number.

• SEL: Display only the selected mark num-

ber.

• ALL: Display all mark numbers.

DATA ALARM*

• OFF: Turn OFF the ATA alarm function.

• ON: Turn ON the ATA alarm function.

DAIS DISPLAY

• OFF: Turn OFF the AIS display.

• ON: Turn ON the AIS display.

DAIS ALARM*

• OFF: Turn OFF the AIS alarm function.

• ON: Turn ON the AIS alarm function.

* An ATA alarm or AIS alarm sounds when the CPA and TCPA

reach the limit.

DAIS RANGE

Set the AIS display range to between 0.1 and 36.0 NM
or ∞.

• 0.1 to 36.0NM: Select the range from your vessel.

• ∞: The received AIS information are dis-

played up to the
setting.

DAUTO ACTIVATE

Set the distance to automatically turn the sleeping AIS
target into an activated target.

• OFF: Turn OFF the Auto Activate function.

• 0.1 to 9.9NM: Select the distance from your vessel.

DNUMBER OF AIS

Select the maximum number of AIS targets that can
be displayed on the screen to between 10 and 100 in
10 digit steps.

“NUMBER OF AIS”

DSLOW WARN

The AIS unit calculated COG (Course Over Ground)
data of a vessel that is at anchor or drifting is unre­liable, and therefore the CPA (Closest Point of Ap­proach) and TCPA (Time to CPA) data may not be
correctly calculated. If a vessel is anchored in your
alarm zone, the unreliable data can cause the collision
alarm to sound many times, even if there is no real
danger. To prevent this, when the anchored vessel’s
SOG (Speed Over Ground) is less than this set value,
the Slow Warn function assumes that vessel’s COG is
fixed towards your vessel and an alarm will sound.

• OFF: Turn OFF the Slow Warn function.

• 0.1 to 4.9KT: Select the vessel’s speed.

DLOST AIS TRGT

Erase all of the Lost targets.
Push [u] to display the confirmation “SURE?,” then

push [u] again to clear all of the Lost targets on the
screen.

About “Lost Target”: A vessel is regarded as a “Lost
target” after a specified period of time has passed
since the vessel last transmitted data, as described
below.
The “Lost target” icon disappears from the screen 6
minutes and 40 seconds after the vessel was regarded
as a “Lost target.”

The criteria to become a Lost target:

Except

Vessel type

Except
Class B

1

Class B

Vessel is at anchor, moored and moving

2

more than 3 knots

Except
Class B

3

Class B

Vessel is moving between 0 and 14 knots

4

while changing course

Vessel is moving between 14 and 23

5

knots

Vessel is moving between 14 and 23

6

knots while changing course

7

Vessel is moving more than 23 knots

Vessel is moving more than 23 knots

8

while changing course

Vessel is at anchor, moored
and moving less than 3 knots

Vessel is moving less than 2
knots

Vessel is moving between 0
and 14 knots

Vessel is moving between 2
and 14 knots

Class

18 min. —

— 18 min.

1 min. N/A

1 min. —

— 3 min.

1 min. N/A

36 sec. 90 sec.

36 sec. N/A

12 sec. 30 sec.

12 sec. N/A

MENU

B

2

Class

B

6

2

TARGET MENU

VECT MODE

VECT TIME
CPA LIMIT
TCPA LIMIT

TRUE REL

6M

1.0NM
1 M

TARGET TRACK

1 M

INT. SETTING

BRG INPUT
SPD INPUT
TX INH START
TX INH ANGLE
SAVE TIME
SYMBOL
CHARACTER BRILL

NMEA

30M

LOG

6M 15M

MANUAL

AUTO

N+1 AUX GPS

GPS

0

˚

0

˚

KEY ILLUM

MAG VAR

1 2 3
1 2 3
123 4

0.0

˚

W

1M

MENU

■ TARGET MENU

DVECT MODE

• TRUE: Select the true vector mode.

• REL: Select the relative vector mode.

DVECT TIME

Set the vector length (time) to 15 seconds, 30 seconds
or 1 to 15 minutes.

DCPA* LIMIT

• 0.1 to 10.0NM: Set the CPA (Closest Point of Ap-

proach) limit by pushing [t] or [u].

DTCPA* LIMIT

• 1 to 60M: Set the TCPA (Time to CPA) limit time

by pushing [t] or [u].

* CPA/TCPA: Closest Point of Approach and Time to Closest

Point of Approach limits are set to give a warning when a
target or targets enter those limits around your own ship.

■ INT. SETTING MENU

DMAG VAR

• AUTO: Automatically revise magnetic variations.

NOTE: NMEA data is required. NEVER select

“AUTO” without NMEA data; incorrect varia­tion data may entered. (p. 43)

• MANUAL: Manually revise magnetic variation.

q Push [u] to select [MANUAL], then

push [q].

w Push [t] or [u ] to set the revised

value.

DBRG INPUT

• NMEA: NMEA0183 bearing data format.

• N+1: N+1 data format.

• AUX: Other format.

• GPS: Reads NMEA0183 COG format data as

HDG format. (The course may not match
with other HDG format and includes
error.)

DTARGET TRACK

The track data is updated at this specified tracking in­terval. Select the track interval time between OFF, 15
seconds, 30 seconds and 1 to 15 minutes.

After 5 dots are displayed, the oldest dot disappears at
the time when the next dot appears.

7

DSPD INPUT

• GPS: Use the GPS NMEA speed data.

• LOG: Use the speed sensor data.

When “BRG INPUT” in the INT. SETTING menu is selected
“GPS,” selectable option is only “GPS.”

DTX INH START

• 0 to 359°: Push [t] or [u] to enter the start point of

the TX inhibit area.

DTX INH ANGLE

• 0 to 90°: Push [t] or [u] to enter the TX inhibit

area.

DSAVE TIME

• 1M, 6M, 15M or 30M:

Select the standby time during the save

mode.

• The radar for TX interval scan is xed at 10

revolutions.

DSYMBOL

• 1/2/3: Select the symbol brightness.
(Includes AIS icons.)

DCHARACTER

• 1/2/3: Select the character brightness.

DKEY ILLUM

• 1/2/3/4: Select the key illumination brightness.

■ Checking the installation

1

(0.25)

T.VECT 6M

0.000NM

NM

CURS

SOG17.7KT

H UP

000.0˚T
HDG253.4˚T

EBL1
EBL2
MOB

VRM1
VRM2

CURS 34˚ 37.72N

135˚ 34.42E

STBY

IR

COMPASS

GPS

1

(0.25)

T.VECT 6M

0.000NM

NM

CURS

SOG17.7KT

H UP

000.0˚T
HDG253.4˚T

EBL1
EBL2
MOB

VRM1
VRM2

CURS 34˚ 37.72N

135˚ 34.42E

IR

COMPASS

GPS

0.45

REV *.*

ROM OK
RAM OK

BASIC OPERATION

3

Before turning ON the power, be sure all the connec­tions are complete. The checklist at right may be help­ful for necessary confirmation.

CAUTION: Connect the scanner unit before turning ON

the power. Otherwise the magnetron inside the scanner
unit might be damaged.

■ Turning power ON/OFF

DChecklist

q The four bolts securing the scanner unit must be

firmly tightened.

w Cabling must be securely attached to a mast or

mounting material, and must not interfere with the
rigging.

e Be sure waterproofing procedures are completed

on the system cable.

r The power connections to the battery must be of

the correct polarity.

t Be sure that the plugs at the rear of the display unit

have been connected correctly and securely.

(See page 28 for details.)

q Push [POWER]/[ ] to turn ON the power.

• The initial screen appears and the magnetron warm up

time is counted down on the screen.

•

The magnetron inside the scanner unit warms up for 90
seconds.

• [POWER]/[ ] is disabled for 2 seconds after

the power is turned OFF.

w When the countdown is completed, the Standby

screen appears.

e Push [TX]/[ ] to start scanning and select

the Plan Position Indicator (PPI) screen.

• Targets and heading markers appear.

• The screen appears approximately 2 seconds after
turning ON the power, when ‘AUTO’ is selected in the

“TUNE” item of the VIDEO menu.

r Push [POWER]/[ ] to turn OFF the power.

8

3

TX

SAVE

TARGET TRAILS

MODEALM

+

-

MOB

MENU

EBL2

VRM2

EBL1
VRM1

BRILL

ZOOM

OFF CENT

HL OFF

AIS

AIS

GAIN

SEA

RAIN

POWER

e

q

w

u

r

t

y

e

q

w

u

r

t

y

BASIC OPERATION

■ Basic operation

q Turn ON the power.

w Push [TX]/[ ] after the countdown disap-

pears from the screen.

• See “Turning power ON/OFF” on page 8.

e Push [+]/[ ] or [–]/[ ] one or more times

to select the display range.

• The screen range readout shows the maximum range

of the screen.

r Rotate [GAIN]/[ ] to the 1 o’clock position.

• Clockwise rotation increases the gain.

• Increased gain may increase screen noise.

t Rotate [SEA]/[ ] to set the sensitivity time

control to minimum.

y Rotate [RAIN]/[ ] to set the rain clutter con-

trol to minimum.

u Push [MODE]/[ ] to sel ect ei ther t he

Head-up; H UP, Course-up; C UP, North-up; N UP
or True Motion; TM screen.

C UP, N UP or TM can be selected only when

bearing, position or speed data is provided.

(See page 43 for details)

9

CAUTION: When setting the [SEA]/[ ] control to

a fully clockwise position, close targets are blanked.

DHeading marker

The heading marker is a line that shows your ship’s
bow direction. (This marker will appear in the cen­ter of the screen when the Head-up screen H UP
is selected.) The heading marker can be hidden
when the desired target is located under the heading
marker.

➥ Simultaneously hold down [BRILL]/[

[MENU]/[ ] to hide the heading marker.

DFixed range rings

The fixed range rings can be used for rough distance
measurements. (p. 14)

➥ Push [MENU]/[

then push [q] to select RING. Push [u] to turn ON
the ring.

DManual tuning

The receiver tuning can be manually adjusted.
➥ Push [MENU]/[

select MANUAL. Push [q] to activate the manual

] to open the FUNCTION menu,

] to open the VIDEO menu, then

tuning slider, then push [t] or [u] to set the tuning
level indicator to the maximum level. (p. 5)

• “M.TUNE” appears at the top of the display.

] and

NOTE:

Manual adjustment can be used. (See below.)

DBrilliance adjustment

The intensity of the screen can be adjusted. When
you require continuous operation, but not constant
viewing, a lower setting can increase the life of the
LCD display.

➥ Push [BRILL]/[

] to increase or decrease the

brilliance of the picture on the display.

➥ Hold down [BRILL]/[ ] for 1 second to select

maximum brilliance.

NOTE: High intensity will shorten the life of the LCD
display.

• Display color

Two display colors can be selected between green
and red.

➥ The display color changes between green and red

if you continue to hold down [BRILL]/[

] after the

display is set to maximum brilliance.

• Key illumination

The backlighting of the keys can be adjusted for con­venient operation. (p. 7)
➥ Push [MENU]/[

] one or more times to select the

INT. SETTING menu. Push [t] or [u] to select the
illumination level.

• Key illumination corresponds with [BRILL]/[ ] con­trol.

BASIC OPERATION

Adjust RAIN control

Small echos

Adjust SEA control

Echos from sea waves

With OFF CENTER ON

Normal screen

The following are typical basic operation examples, which may hinder radar reception (sea clutter, precipitation
interference and echoes from other radar).

3

■ RAIN function

This function eliminates echoes from rain, snow, fog

etc.

• Rotate the control fully counterclockwise to deactivate the

control function. The RAIN indicator (

• NOTE: DO NOT reduce the echoes too much, otherwise
you may miss weaker targets.

) disappears.

■ SEA function

■ OFF CENTER function

This function serves to eliminate echoes from waves at

close range. Reduce the receiver gain for close objects
within a radius of 8 NM to eliminate sea clutter.

• Rotate the control fully clockwise to activate the automatic

control function. SEA indicator (
left corner of the screen.

) appears in the upper

WARNING: The [SEA]/[ ] control re-

duces the receiver sensitivity of objects within 8 NM.
Therefore, caution and careful adjustment are nec­essary when using the [SEA]/[ ] control.
Small objects may not be displayed on the screen
when strong echoes from rain or islands within 1 NM
while the automatic SEA function is activated.

The scanning area can be shifted in a desired direction

and can be partially enlarged. This is useful when
Head-up* screen is selected, and you want to enlarge
the bow direction display, or the center of the screen
shifts in the direction of the intersection.

• This function is selectable in 24 NM or shorter ranges.

*This function is not selectable in the TM screen.

q Push [p], [q], [t ] or [u] to move the cursor

where you want to shift the center of the screen.

• Maximum offset is up to 75% of the screen.

w Push [ALM]/[ ] and [MODE]/[ ] simulta-

neously to shift the screen.

e Push [ALM]/[ ] and [MODE]/[ ] simulta-

neously again to return to the normal screen.

10

3

With IR function ON

Radar interference

With STRETCH ON

Normal screen

With ZOOM function ON

Normal screen

BASIC OPERATION

■ IR function

Radar interference may appear when another ship’s

radar is operating on the same frequency band in
close proximity. The IR function can eliminate this type
of interference. (p. 5)

■ STRETCH function

q Push [MENU]/[
w Push [q] to select “IR.”
e Push [t] or [u] to select IR function 1, 2 or OFF.

• “IR” appears in the upper right of the screen, when the

function is activated.

The blips can be magnified electronically for easier

viewing of small targets. (p. 5)

q Push [MENU]/[

the VIDEO menu.

w Push [q] to select “STRETCH”, then push [u] to

turn ON the function.

• “ES” appears in the upper right of the screen, when the

function is activated.

NOTE: Turn OFF this function during normal opera-

tion.

] to call up VIDEO menu.

] one or more times to select

■ ZOOM function

The ZOOM function expands the target to two times

normal size.

• This function is selectable up to a 24 NM range or shorter

q Push [p], [q], [t] or [u] to move the cursor to the

w

• “ZOOM” appears in the lower right of the screen.

1

except

⁄8 NM.

desired target.
Push [TARGET]/[ ] and [TRAILS]/[ ]
simultaneously to toggle the ZOOM function between
ON and OFF.

11

■ TRAILS function

3/4

(0.25)

M.TUNE

1:0 5

NM

CURS

STW 15.7KT

H UP

HDG 253.9˚T

6M

TRAILS

IR

ES

T.VECT

0.453NM

TRAIL
indicator

Trail interval
counter

Trail time

CURS 34˚ 37.72N CURS 34˚ 37.72N

1

(0.25)

T.VECT 6M

0.900NM

NM

CURS

SOG17.7KT

H UP

014.6˚T
HDG273.9˚T

IR

ES

EBL1
EBL2
MOB

VRM1
VRM2

135˚ 34.42E

0:48

SAVE

Hold down [TX] for 1 second
to turn ON the SAVE function.

Scan and STBY alternates

Count down the standby time

1

(0.25)

T.VECT 6M

0.900NM

NM

CURS

SOG17.7KT

H UP

014.6˚T
HDG273.9˚T

IR

ES

EBL1
EBL2
MOB

VRM1
VRM2

135˚ 34.42E

0:00

SAVE

COMPASS

GPS

COMPASS

GPS

BASIC OPERATION

3

The trails function memorizes echoes continuously or
at constant intervals. This is useful for watching other
ships’ tracks, approximately relative speed, etc.

• Setting the trail interval time

q Push [MENU]/[ ] one or more times to select the

VIDEO menu.

• Push [q] one or more times to select “TRAIL TIME.”

w Push [t] or [u] to select trail interval time.

• 6 seconds, 15 seconds, 30 seconds, 1 minute, 3 min­utes, 6 minutes, 15 minutes and

∞ (continuous) are se-

lectable.

e Push [MENU]/[ ] one or more times to exit the

menu.

• Using the TRAILS function

q Push [TRAILS]/[

] to turn ON the trail func-

tion.

• “TRAILS” and trail interval time appears in the upper

right of the screen.

• Trail interval counter starts to count up to the trail time.

w All displayed echoes at the plotted time are mem-

orized and displayed with a graduated intensity
together with the current echoes.

• Echoes are displayed with minimum intensity when “∞”

is selected.

e Push [TRAILS]/[ ] to cancel the trail function

and erase the plotted echoes.

• “TRAILS” and trail interval time disappears.

■ Power save function

The power save function conserves the boat’s battery
power by pausing the transmission. The standby
(pausing) times are selectable (rotation number is
fixed to 10).

For example, when 1 minute is selected, the scanner
rotates 10 revolutions; then stops for 1 minute, and
then repeats this sequence while the power save func­tion is activated.

DSetting the scanning standby time

q Push [MENU]/[ ] one or more times to select

the INT. SETTING menu.

w Push [q ] one or more times to select “SAVE

TIME.”

e Push [t] or [u] to select standby time.

• 1, 6, 15, and 30 minutes are selectable.

r Push [MENU]/[ ] one or more times to exit the

menu.

DUsing the power save function

q Hold down [TX (SAVE)]/[

] for 1 second to

turn ON the power save function.

• The save indicator appears in the top of the screen.

w After the scanning rotations are finished, transmis-

sion and rotation are suspended until the selected
standby time elapses.

• The display shows the last scanned echoes until the

scanning restarts.

• “SAVE” and standby time appear in the top of the screen

and the standby time is counted down.

e After the selected standby time elapses, transmis-

sion and rotation restart.

r Push [TX (SAVE)]/[ ] to cancel the power

save function.

• The save indicator turns OFF.

NOTE: When you use the power save function
together with the alarm function, the LCD display is
turned OFF until an object enters the programmed
alarm zo ne, t herefore, more powe r s av ing is
possible. (p. 17)

12

3

BASIC OPERATION

■ Ship speed indication

When the ship speed data in NMEA 0183 format is ap­plied, the radar can display the ship speed. Knots (KT)
or kilometers/hour (KM/h) are automatically selected
in the normal screen (p. 3) by selecting nautical miles
(NM) or kilometers (KM) respectively.

q Push [MENU]/[

the FUNCTION menu.

w Push [q] one or more times to select “DIST UNIT.”
e Push [t] or [u] to select the ship speed indication

to NM or KM.

r Push [MENU]/[ ] one or more times to exit the

menu.

] one or more times to select

■ Position indication

When latitude/longitude data in NMEA 0183 format is
applied, the radar can display the latitude and longi­tude of your ship’s or cursor position in the bottom of
the display. (To display the CURSOR position, bearing
data is necessary.) (p. 43)

q Push [MENU]/[

the FUNCTION menu.

w Push [q ] one or more times to select “POSN

DISP.”

e Push [t] or [u] to select the ship position or cursor

position.

r Push [MENU] one or more times to exit the menu.

] one or more times to select

■ Waypoint indication

When waypoint data received from navigation equip­ment in NMEA 0183 format is applied, the radar can
display the waypoint. To display the waypoint marker,
bearing data is necessary. (p. 43)

q Push [MENU]/[

the FUNCTION menu.

w Push [q] one or more times to select “WPT.”
e Push [t] or [u] to turn the waypoint icon ON or

OFF.

r Push [MENU]/[

menu.

] one or more times to select

] one or more times to exit the

■ Long pulse function

To magnify the blips for easier viewing of small tar­gets, the long pulse and echo stretch (p. 11) functions
are usable. When the long pulse is used in the 3⁄4 to 3
NM range, this function magnifies target echoes to the
backward direction of the target.

• Pulse selection

q Push [MENU]/[

the VIDEO menu. (p. 5)

w Push [q] one or more times to select “PULSE.”
e Push [t] or [u] to select SP (Short Pulse) or LP

(Long Pulse).

• When “LP” is selected, “ ” appears in the upper left of
the screen.

r Push [MENU]/[ ] one or more times to exit the

menu.

NOTE: To select SP (Short Pulse) increases the tar­get distance resolution. (p. 27)

] one or more times to select

■ Bearing setting

The radar bearing interface accepts NMEA, N+1, AUX
or COG data format and the bearing can use a mag­netic or true north type. When a true north type bear­ing is used, the variation from magnetic north, etc.,
can be adjusted on 0.1˚ steps.

DSetting the bearing type

q Push [MENU]/[

the FUNCTION menu.

w Push [q] one or more times to select “BRG.”
e Push [t] or [u] to select magnetic or true north

type.

• All displayed bearing readouts show the selected bear­ing type.

DSetting the magnetic variation

q Push [MENU]/[ ] one or more times to select

the INT. SETTING menu.

w Push [q] one or more times to select “MAG VAR.”
e Push [t] or [u] to select an AUTO* or MANUAL

variation.

r When a MANUAL variation is selected, push [q],

then push [t] or [u] to set the bearing variation.

t Push [MENU]/[ ] one or more times to exit the

menu.

] one or more times to select

13

* NOTE: NMEA data is required for auto variation. NEVER

select “AUTO” variation without NMEA data, incorrect varia­tion data may entered.

DISTANCE AND DIRECTION MEASUREMENTS

1

(0.25)

T.VECT

0.900NM

NM

CURS

SOG 0.0KT

H UP

014.6˚T
HDG

IR

ES

EBL1
EBL2

W

PT

VRM1
VRM2

CURS 34˚ 37.72N

135˚ 34.42E

Fixed ring

Ring range readout

Range (nm)

Ring (nm)

1 1.5 234681216243236 48*

1

⁄

8

1

⁄

4

1

⁄

2

3

⁄

4

25534646464646466

112244886

64

†72†

46

1216

1

⁄

20

1

⁄

20

1

⁄

10

1

⁄

4

1

⁄

4

1

⁄

4

1

⁄

2

1

⁄

2

NOTE: When the screen is shifted, the number of rings may differ.
*Available for the MR-1200TII/TIII.

†

Available for the MR-1200TIII only.

■ Distance measurement

4

TYPE

Displays fixed rings.

RING

Suitable for rough estimations from your
own ship to any target.

Displays a variable range marker and
activated by [p ] or [q] for the range

VRM1

marker selector.
Suitable for accurate measurem ents
from your own ship to a target.

Normally functions the same as VRM1.
When the VRM1 and EBL1 selects a
target, the center of VRM2 appears at

VRM2

the intersection point.
Suitable for accurate measurem ents
from target to target.

DUsing the fixed rings

DESCRIPTION

Two measurement procedures can be used with this
radar. Use them separately or jointly is possible.

The distance unit, nautical miles (NM) or kilometers
(KM) is selected in the FUNCTION menu (p. 5).

q Push [MENU]/[ ] one or more times to select the

FUNCTION menu.

w Push [q] one or more times to select “RING.”
e Push [u] to turn ON the RING function and display

the fixed rings.

• The interval range appears on the right of the screen

range readout.

• The ring range is xed depending on the screen range.

(See below.)

r Push [MENU]/[ ] one or more times to exit the

menu.

t To clear the fixed rings, push [t] to turn OFF the

function, as described in step e above.

DUsing the variable range marker

q

Push [EBL1 (VRM1)]/[ ] to display VRM1
and EBL1; then push [p] or [q] to set the marker.

• The range between the ship and the target is indicated

in the VRM readouts.

w

Push [EBL2 (VRM2)]/[ ] to display VRM2
and EBL2; then push [p] or [q] to set the marker.

• The range between the ship and the target is indicated

in VRM readouts.

• When VRM1 and EBL1 are displayed, the center of

VRM2 appears at the intersection point of VRM1 and
EBL1.

• The VRM2 disappears when [EBL1 (VRM1)] is pushed.

e Push [EBL1 (VRM1)]/[ ] to exit the

menu display.

14

EBL1

VRM1

EBL2

EBL1
readout

EBL2
readout

VRM2

VRM1 readout
VRM2 readout

4

DISTANCE AND DIRECTION MEASUREMENTS

■ Bearing and Distance measurement

This radar has two Electronic Bearing Lines (EBL) to
indicate the target direction from your ship or a target.

DUsing the EBL and VRM

q Push [p], [q], [t] or [u] to move the cursor onto

the desired target.

w Push [EBL1 (VRM1)]/[ ] to display the

EBL1 and VRM1.

• Push [t] or [u] to rotate the electronic bearing line.

• Push [u ] to rotate clockwise and push [t] to rotate

• Push [p] or [q] to increase or decrease the variable

• The EBL1 and VRM1 readouts indicate the target bear-

• The EBL readouts indicate the target bearing;
0 to 360°R: Relative direction, when ‘360°R’ is se-

P/S 0 to 180°: Bow direction, when ‘PT/SB’ is selected

0 to 360°T*: True or magnetic bearing, when select-

e Push [EBL1 (VRM1)]/[ ] to clear EBL1

and VRM1.

• Cursor remains on the display.

r Push [p], [q], [t] or [u] to move the cursor onto

the desired target.

t Push [EBL2 (VRM2)]/

EBL2 and VRM2 on the display.

• When EBL1 and VRM1 are displayed, the beginning

• EBL2 and VRM2 disappear when [EBL1 (VRM1)]/

y To clear EBL1 and VRM1, push [EBL1 (VRM1)]/

[ ].

counterclockwise.

range marker ring size.

ing and distance.

lected in the DIRECTION item of the
FUNCTION menu. (See page 5)

in the DIRECTION item of the FUNC­TION menu. (See page 5)

ing ‘TRUE’ in the DIRECTION item of the

FUNCTION menu. (See page 5)

*Bearing data is required. (p. 43)

[ ]

of EBL2 and VRM2 appears at the intersection point of
EBL1 and VRM1.

[

] is pushed.

to display

15

DISTANCE AND DIRECTION MEASUREMENTS

3/4

MTUNE

TVECT

3M

1141NMNM

CURS\

SOG

km/h

H UP

3171

˚M

HDG

IR

ES

EBL1
EBL2
WPT

VRM1
VRM2

3211

˚M

0890

˚T

0852NM
0814NM

POSN

ALM

GYRO

GPS

EBL2

EBL1

VRM2

VRM1

3/4

TVECT

6M

1141NMNM

CURS\

SOG

KT

H UP

3171

˚M

HDG

IR

ES

EBL1
EBL2
WPT

VRM1
VRM2

3211

˚T

1714

˚T

0401NM
0184NM

POSN

VRM2

EBL2

EBL1

VRM1

■ Advanced measurements

Using both Electronic Bearing Lines (EBL) and both
Variable Range Markers (VRM), the following ad­vanced measurements can be made:

DMeasuring the distance and direction between two targets

q Push [p], [q], [t] or [u] to move the cursor onto

the desired target.

w Push [EBL1 (VRM1)]/[ ] to display the

EBL1 and VRM1.

• Push [t] or [u] to rotate the electronic bearing line.

• Push [p] or [q] to increase or decrease the variable

e Push [EBL2 (VRM2)]/

EBL2 and VRM2.

• The intersection of the EBL1 and VRM1 becomes the

r Push [p], [q], [t] or [u] to move the cursor onto

the other target.

• Push [t] or [u] to rotate the electronic bearing line.

• Push [p] or [q] to increase or decrease the variable

t The VRM2 readout shows the distance between

the two targets. The EBL2 readout shows the
direction from one target to the other.

range marker ring size.

[ ]

center of the EBL2 and VRM2.

range marker ring size.

4

to display the

DMeasuring the relative speed and course of a target

• Measuring the distance and course from a waypoint

q Display a waypoint. (See page 13)
w Set VRM1 and EBL1 to the displayed waypoint

targets as described above.

e Set VRM2 and EBL2 to a target (e.g. the next

waypoint) as described on page 15.

q Push [TRAILS]/[ ] (p. 12) to turn ON the

TRAILS function; then wait until the trail time count
up reaches to the TRAIL TIME.

w Set VRM1 and EBL1 to a previously plotted target

as described above.

e Set VRM2 and EBL2 to the current plotted position

of the same target, as described above.

r The VRM2 readout is a measure of target move-

ment which can be converted into relative target
speed.

• For example, when a 6 minute trail time is selected,

multiplying the distance by ten gives the relative aver­age speed of the target.

• If your ship is stationary during the plotting time, the

converted speed and direction become absolute.

• The converted speed unit is knots or kilometers/hour

when the selected unit in the FUNCTION menu is nau­tical miles (NM) or kilometers (KM), respectively.

t The EBL2 readout shows the course direction of

the target.

r The VR M2 readout shows the distance to the

target from the waypoint.

• The distance unit can be selected as nautical miles

(NM) or kilometers (KM) in the FUNCTION menu.

t The EBL2 readout shows the direction to the target

from the waypoint.

16

5

3/4

(0.25)

TVECT

3M

0189

NM

NM

CURS\

SOG177

KT

H UP

0525

˚T

HDG2739

˚T

IR

ES

EBL1
EBL2

WPT

VRM1
VRM2

GYRO

GPS

ALM

3/4

(0.25)

TVECT

3M

0397

NM

NM

CURS\

SOG177

KT

H UP

3143

˚T

HDG2739

˚T

IR

ES

EBL1
EBL2
WPT

VRM1
VRM2

CURS

GYRO

GPS

Push

135˚ 3442

E

34˚ 3772

N

CURS

135

˚

3442

E

34˚ 3772

N

[t] [ u] [p] [q]

“ALM”
appears

Fig. 1

Fig. 2

Alarm sounds when the target
comes into the zone.

Alarm zone

Fig. 3

Target (other ship, etc.)

ALARM FUNCTION

The unit has an alarm function to protect your ship from collisions. If other ships, islands or other obstructions.
come into the pre-programmed alarm zone, the function alerts you with an alarm. You can set the desired range
and bearing for an alarm zone. While the alarm function is activated, the power save function turns OFF the LCD
until an alarm is given, to conserve power.

■ Alarm zone setting

DSetting and using the alarm function

q Push [+]/[ ] or [–]/[ ] to selec t the

desired range.

w Push [t], [u], [p] or [q] to set the cursor to the

starting point of the alarm zone.

e Hold down [ALM]/[ ] for 1 second to enter the

alarm zone setting.

• The starting zone appears on the screen. (Fig. 1)

r Push [t] or [u] to adjust an angle and push [p] or

[q] to set the distance of the alarm zone.

• The selected alarm zone appears.
t Push [ALM]/[ ] to set the alarm zone and acti-

vate the alarm function.

• “ALM” appears on the bottom of the screen.

• The selected alarm zone remains.
y If a target comes into or goes out of the alarm

zone, an alarm sounds.

• Push [ALM]/[ ] to cancel the alarm signal and func­tion.

u To deactivate the alarm function, push [ALM]/

[ ].

• “ALM” and alarm zone disappear from the screen.

i To activate the alarm function again with the same

programmed zone, push [ALM]/[ ].

•

“ALM” and the pre-programmed alarm zone appears.
(Fig. 2)

■ Zone alarm setting

17

• Using the function with power saver

To activate the power save function, hold down [TX
(SAVE)]/[ ] for 1 second while the alarm func­tion is ON.

• The LCD display turns OFF.

• When a target comes into the alarm zone, an alarm

sounds, the LCD display turns ON and the power save
function is cancelled.

A zone alarm sounds when the target comes into the
zone, or the target goes out of the zone. (p. 5)

q Push [MENU]/[ ] one or more times to select

the FUNCTION menu.

w Push [q ] one or more times to select “ZONE

ALARM.”

e Push [t] or [u] to select IN or OUT.

• IN : Alarm sounds when the target comes into the

zone. (see Fig. 3)

• OUT : Alarm sounds when the target goes out of the

zone.

ATA/AIS

ATA AIS MENU

ATA No.DISP OFF ALL

ON

OFF

ATA ALARM ONOFF
AIS DISPLAY ONOFF
AIS ALARM ONOFF
AIS RANGE 8.0NM
AUTO ACTIVATE

1.0NM

NUMBER OF AIS

100

SLOW WARN

0.1KT

LOST AIS TRGT

ERASE

SEL

ATA

6

■ ATA (Automatic Tracking Aid)

By automatically tracking the target chosen by the cursor key, the closest point of approach (CPA) and the time to
closest point of approach (TCPA) limit of your ship and a target are calculated.
ATA function is designed to sound an alarm when the CPA and TCPA fall below a set value (the approach watch
area).
Only targets in the 0.25 to 16 NM range that are displayed with a high luminosity (strong return signal) can be se­lected as ATA targets.

• A maximum of 10 targets can be plotted on the screen.

• Plot positions are identied by an approved symbol mark (p. 20) and associated plot number.

• The target and vector line will move across the screen at the rate and direction dened by the calculated true

or relative course and speed.

• The vector line is displayed on the target.

■ATA settings

Set the menu items before using the ATA function.

DATA AIS menu

q Push [MENU]/[

menu.

w Push [p] or [q] to select the item.
e Push [t] or [u] to select the option.
r Push [MENU]/[ ] one or more times to exit the

menu.

Select the ATA AIS menu, then set the items.

 ATA

Turn ON the ATA function.

 ATA No. DISP

Select the target identification number type that ap­pears at the right side of the mark.

• OFF: Do not display any mark number.

• SEL: Display only the selected mark number.

• ALL: Display all mark numbers.

 ATA ALARM

Turn the ATA alarm function ON or OFF.

• An ATA alarm sounds when the CPA and TCPA reach

the limit.

] one or more times to select the

18

6

TARGET MENU

VECT MODE

VECT TIME
CPA LIMIT
TCPA LIMIT

TRUE REL

6M

1.0NM
1 M

TARGET TRACK

1 M

Identification No.

Bearing

Course

Distance

Speed

Passage of time

Closest Point of
Approach

Time to Closest
Point of Approach

ATA

ATA

No.

ATA/AIS

■ ATA settings (Continued)

DTARGET menu

These settings are commonly used for the ATA opera­tion and AIS operation.

* CPA/TCPA: Closest Point of Approach and Time to

Closest Point of Approach limits are set to give a
warning when a target or targets enter those limits
around your own ship.

Select the TARGET menu, then set the item.

 VECT MODE

Select the vector type.

• TRUE (True vector):

The predicted true motion of a target as the result of your

own ship’s direction and speed input.

• REL (Relative vector):

The predicted movement of a target relative to your own

ship.

 VECT TIME

Set the vector length (time) to 15 seconds, 30 sec­onds or 1 to 15 minutes.

 CPA* LIMIT

Set the CPA limit distance.

 TCPA* LIMIT

Set the TCPA limit time.

• An ATA or AIS alarm sounds when the CPA and TCPA

reach the limit.

■ATA operation

19

 TARGET TRACK

The track data is updated at this specified tracking
interval. Select the track interval time between OFF,
15 seconds, 30 seconds and 1 to 15 minutes.
After 5 dots are displayed, the oldest dot disappears
at the time when the next dot appears.

Select a target on the screen which you want to track.

q Push [p], [q], [t] or [u] to move the “+” cursor onto

a desired target.

w Hold down [TARGET]/[ ] for 1 second to select

the target for tracking.

• A dotted square symbol appears on the cursor.

• The target identication number, bearing, distance read-

out, course (CSE), speed (SPD), CPA and TCPA appear
in the information screen.

• The timer starts to count the progressing time.

• After 20 seconds progressing time has passed, the vec-

tor appears on the target.

• After 1 minute progressing time has passed, it changes

to a solid circle with a vector line, and tracking operation
starts.

• When the target disappears, it changes to a blinked loz­enge. And then the mark disappears after 1 minute.

• When a target advances within the CPA and TCPA limits,

a mark changes to a triangle, blinks and sounds an alarm.
The alarm will be cancelled if any key is pushed.

• To cancel the target setting, move the cursor onto the

target, then hold down [TARGET]/[

• [TARGET]/[

EBL/VRM etc. to target information.

• To select the target which displays information, set the

cursor to the target, and then push [TARGET]/[

] is pushed for changing the display of

] for 1 second.

].

Vector

Current position

Vector time

Target’s predicted
positon

■ Plotting marks

q

we

r

■ Course and speed vector

There are 5 kinds of plotting marks.

: Selected, uncalculated mark.
: Selected, calculated mark.
: Normal, calculated mark.
: CPA/TCPA alarm mark. The target is

close to within a minimum range and
time. Alarm emit indicator. Push [TAR­GET]/[

: Indicates the tracking of a target disap-

pears.

] to cancel the alarm.

ATA/AIS

6

■ Plots (ATA)

The vector indicates the target’s predicted, true or rela-

tive course and speed.

• The vector time may change, depending on the VECT TIME

setting. (see TARGET menu, pp. 7, 19)

• The tip of the vector shows the target’s predicted position

after the time selected in the “VECT TIME.”

The plot displays the target’s past positions as 5 dots,
during each specified tracking interval.

• The target track may change, depending on the TARGET

TRACK setting. (see TARGET menu, pp. 7, 19)

q Target goes straight.
w Target turns right.
e Target reduces speed (dots are closer together behind

the target).

r Target increases speed (dots are father apart be-

hind the target).

20

6

1

(0.25)

T.VECT 6M

0.000NM

NM

CURS

SOG 17.7KT

H UP

000.0˚T

253.4˚THDG

STBY

IR

COMPASS

GPS

AIS

AIS indicator

AIS target Selected AIS targetYour vessel icon

AIS data area

AIS operating mode indicator

AIS

ATA/AIS

■AIS (Automatic Identification System)

AIS is an acronym for “Automatic Identification System.”
An AIS transponder is a short range data radio unit, used primarily for collision-risk management and navigation
safety. It automatically transmits and receives vessel information such as the vessel name, MMSI code, vessel
type, position data, speed, course, destination and more. Information is exchanged among the vessels and/or
base stations on the VHF maritime mobile band. The information helps to identify other nearby vessels or stations
by displaying the received data on a radar screen.

D Description of the AIS display

Push [EBL1 (VRM1)]/[ ] and [EBL2
(VRM2)]/[ ] to toggle between the AIS op­erating mode and the normal operating mode.

 AIS target

The AIS targets are displayed the icons described
below.

• AIS icons

Icon Description

AIS target: Vessel
The tip of the target triangle automatically
points in the direction it’s heading.

AIS target: Base Station

AIS target: Search and Rescue (SAR)

AIS target: Aids to Navigation (AtoN)

AIS target: Vertual Aids to Navigation (Virtual

AtoN)

AIS target: Search and Rescue Transponder

(SART)

 Your vessel icon

Appears in the center of the standby screen when
a valid VDM sentence is input from the NMEA (AIS)
port.

 Selected AIS target

A square of only four corners appears when the tar­get is selected. The selected AIS target’s information
is displayed in the data area.

 AIS indicator

Appears when a valid VDM sentence is input from
the NMEA (AIS) port.
If more than the specified AIS signals that is set in
the “NUMBER OF AIS” setting of the ATA AIS menu
are received, this indicator changes to a reverse dis­play (

).
The indicator disappears if the AIS signal is inter­rupted for 6 minutes.

21

 AIS operating mode indicator

Appears when the AIS operating mode is selected.

ATA AIS MENU

ATA No.DISP OFF ALL

ON

OFF

ATA ALARM ONOFF
AIS DISPLAY ONOFF
AIS ALARM ONOFF
AIS RANGE 8.0NM
AUTO ACTIVATE

1.0NM

NUMBER OF AIS

100

SLOW WARN

0.1KT

LOST AIS TRGT

ERASE

SEL

ATA

■AIS settings

ATA/AIS

6

DATA AIS menu

q Push [MENU]/[

] one or more times to select the

menu.

w Push [p] or [q] to select the item.
e Push [t] or [u] to select the option.
r Push [MENU]/[ ] one or more times to exit the

menu.

Select the ATA AIS menu, then set the items.

 AIS DISPLAY

Turn the AIS display ON or OFF.

 AIS ALARM

Turn the AIS alarm function ON or OFF.

• An AIS alarm sounds when the CPA and TCPA reach

the limit.

 AIS RANGE

Set the AIS display range to between 0.1 and 36.0
NM or ∞.

• 0.1 to 36.0 NM: Select the range from your vessel.

• ∞:

The received AIS information are displayed
up to the “NUMBER OF AIS” setting.

 AUTO ACTIVATE

Set the distance to automatically turn the sleeping
AIS target into an activated target.

• OFF: Turns OFF the Auto Activate function.

• 0.1 to 9.9 NM: Select the distance from your vessel.

 NUMBER OF AIS

Select the maximum number of AIS targets that can
be displayed on the screen to between 10 and 100.

 SLOW WARN

The AIS unit calculated COG (Course Over Ground)
data of a vessel that is at anchor or drifting is unre­liable, and therefore the CPA (Closest Point of Ap­proach) and TCPA (Time to CPA) data may not be
correctly calculated. If a vessel is anchored in your
alarm zone, the unreliable data can cause the colli­sion alarm to sound many times, even if there is no
real danger. To prevent this, when the anchored ves­sel’s SOG (Speed Over Ground) is less than this set
value, the Slow Warn function assumes that vessel’s
COG is fixed towards your vessel and an alarm will
sound.

• OFF: Turn OFF the Slow Warn function.

• 0.1 to 4.9 KT: Select the vessel’s speed.

 LOST AIS TRGT

Erase all of the Lost targets.
Push [u] to display the confirmation “SURE?,” then
push [u] again to clear all of the Lost targets on the
screen.

22

6

AIS Classes/target type

Bearing

Course Over Ground

Distance

Speed Over
Ground

Target Position/Vessel name

MMSI number

Closest Point of Approach

Time to Closest Point
of Approach

ATA/AIS

■ AIS settings (Continued)

DTARGET menu

You can change the target settings for AIS operation
same as ATA operation. See pages 7 or 19 for TAR­GET menu details.

■AIS operation

Select a target whose information you want to display
on the screen.

q Push [EBL1 (VRM1)]/[

] and [EBL2
(VRM2)]/[ ] to select the AIS operating
mode.

w Push [p], [q], [t] or [u] to move the “+” cursor

onto a desired target.

e Push [TARGET]/[ ] to select the target.

• A square of only four corners appears on the cursor.

• The target information appear in the AIS data area.

- AIS Class, MMSI number, bearing, distance, Course
Over Ground (COG), Speed Over Ground (SOG),
CPA and TCPA appear.

- The position information and Vessel name are alter­nately displayed.

• If several targets are overlapped on the screen, push

[TARGET]/[

• Hold down [TARGET]/[

selected target between activated and sleeping.

• Push [EBL1 (VRM1)]/[

(VRM2)]/[
erating mode and the normal operating mode.

] to sequentially select a target.

] for 1 second to toggle the

] and [EBL 2

] to toggle between the AIS op-

23

ROT (Rate of Turn)

SOG (Speed Over Ground) and
COG (Course Over Ground) vector

Heading line

■ Status of the vessel icon

Target goes straight. Target turns right. Target reduces speed. Target increases speed.

There are 5 kinds of target vessel status.

Sleeping target:

The AIS signal has been updated (received),

but the distance from your vessel is far, or you

set it as ‘sleeping.’ The target is displayed as

just a triangle without a heading or vector line.

ATA/AIS

6

Activated target:

The target is displayed with the heading line,

SOG (Speed Over Ground), COG (Course
Over Ground) vector and ROT (Rate of Turn).

Dangerous target:

Even if the target’s status is sleeping or acti-

vated, when it enters your CPA and TCPA limit
settings, the target is displayed with a thick
line.

Selected target:

The target’s information is displayed in the

data area.

Lost target*:

When the AIS signal has not been updated

(received) for a specific time period, the target
triangle is marked with a diagonal line.

If the AIS signal has still not been updated

(received) for 6 minutes and 40 seconds, the
target icon disappears.

* A vessel is regarded as a “Lost target” after a specified pe-

riod of time has passed since the vessel last transmitted
data. (p. 6)

• Activated target

If there is no heading data, the line points
in the direction of the COG.

■Plots (AIS)

The plot displays the activated vessel or SART’s past
positions as 5 dots, during each specified tracking in­terval.

• The target track may change, depending on the TARGET

TRACK setting. (see TARGET menu, pp. 7, 19)

24

7

Target

Scanner

Mast or
similar obstruction

An echo is reflected at this point.

Your ship

Target

Bridge

Tr ue echo

False echo

Indirect echo

Tr ue echo

Main beam

Side lobes

False
echoes

Tr ue
echo

Radar uses a form of electromagnetic radiation which, like light, can be reected. Because of this property, some

objects may cause false echoes on the screen where in fact no targets actually exist.
These echoes may appear if a large vessel, bridge, or other metal object is in proximity. Operators should be famil­iar with the effect of this phenomena. In some cases, echoes can be reduced.

BASIC RADAR THEORY

■ Side-lobe echoes

Radiation can escape on each side of the beam inside

the lobes. If a target reects this radiation, it will be

displayed on the screen as an echo.

■ Indirect echoes

Indirect echoes may be returned from either a passing

ship, or returned from a reecting surface, such as a

mast on your own ship.

Side-lobe echoes usually occur at short ranges and

as a result of large (strongly reective) targets. They

can be reduced with proper adjustment of the [SEA]/
[ ] control.
See page 9 for the [SEA]/[ ] control.

An indirect echo from a reective surface will appear

on a different bearing from the direct (true) echo, but
the distance will be approximately the same for both.

25

■ Multiple echoes

Your ship

Another ship

Tr ue echo

False echoes

This target can not be detected by radar.

The target in this area can not be detected.

Pulse length

Pulse starting point

Vertical beam width

BASIC RADAR THEORY

7

Multiple echoes may appear when a short-range and
strong echo is received from a ship, bridge, or break­water.

■ Minimum range

Detection at short range is very important. Minimum
range is determined primarily by transmitter pulse
length, vertical beam width and height of the scanner
unit. The shorter the transmission time, the quicker the
return echoes can be received and their distance mea­sured.

Multiple echoes will appear beyond the target’s true
echo point on the same bearing of a large target. They
can be reduced with proper adjustment of the [SEA]/
[ ] control.
See page 10 for the [SEA]/[ ] control.

The ability to see targets very close to the ship is de­creased if the scanner is mounted too high off the
water, because the bottom of the vertical beam of the
scanner overshoots nearby targets.

26

7

Mast or
similar
obstruction

Shadow sector

Blind sector

Your ship

Large
island

Small

island

Tr ansmit
pulse

Echoes

Target 1

Target 2

Target 2

Target 1

Tr ansmit

pulse

Echo

Target 1,2

Target 1, 2

Target 2

Target 1

Scanner

Target 2

Target 1

Scanner

Target 2

Target 1

Target 1, 2

BASIC RADAR THEORY

■ Blind and Shadow sectors

Blind or Shadow sectors may exist because of obstruc­tions such as masts, derricks or other metal objects.
An obstruction may throw either a complete or partial
shadow as shown in the diagram below. If a target is
in a shadow sector, target echoes may not appear on
the screen.

■ Target resolution

Target resolution is determined by the horizontal beam
width and transmit pulse width. Sometimes it is difficult
to detect two targets which are separated by short dis­tances or which are in the same direction.

When tall and massive targets such as a large island
are located at close range also shadowed without pro­ducing any echoes. This phenomenon is called blind
sector. It is very important to know the bearings and
widths of all shadow sectors caused by your own
ship’s obstructions.

DDistance resolution

When two targets are separated by more than the

pulse width, they appear as two echoes.

When two targets are not separated by more than

the pulse width, they appear as 1 echo.

DDirection resolution

When two targets are separated by more than the

horizontal beam width, they appear as two echoes.

When two targets are not separated by more than

the horizontal beam width, they appear as one
echo.

27

INSTALLATION AND CONNECTIONS

NMEA2:
NMEA 0183 data input/output
Speed sensor input

+

Ground

Power supply

10.2 to 42 V DC

Red:

Black: _

PWR

GND

NEVER connect anything
other than the supplied
Scanner unit.

Supplied Scanner unit

Display unit

NOTE: Use the termi­nals as shown below for
the cable connections.

Solder

Crimp

NMEA1:
AIS data input
Bearing data input

q AIS input (+)

w RXD

(FW_UP)

i GND

r NMEA 1 input (–)

or AUX input (–); DATA

e NMEA 1 input (+)
or AUX input (+); DATA

u AIS input (–)

y N+1 input (–)

or AUX input (–); CLOCK
t N+1(+); data input

or AUX input (+); CLOCK

DC input

Ground

q NMEA 2
output (+)

w NMEA 2
output (–)
e NMEA 2
input (+)

u GND (Speed sensor)

y Speed sensor

input
t Regulated 5 V output.

(20 mA Max.)
r NMEA 2 input (–)

■ Connecting the units

8

NMEA1 connection (Rear panel view) NMEA2 connection (Rear panel view)

NMEA 1/2 inputs/NMEA 2 output: 4800 bps, AIS input: IEC61162-2 38400 bps

■ Power source requirement

DDC power source

CAUTION: Incorrect cable connection will dam-

age the display unit.

■ Ground connection

To prevent electrical shocks and other problems, ground the display unit through the [GND] terminal. For best re­sults, connect a heavy gauge wire or strap to the nearest grounding point on the boat. The distance between the
[GND] terminal and the ground point should be as short as possible.

(Rear panel view)

The display unit is designed for connection to any

power source if the voltage is 10.2–42 V DC, so that a
12, 24, or 32 V DC battery can be used without a
DC-DC converter, or any internal modifications.

• DC power cable connection

Connect the supplied DC power cable as shown in the

diagram.

28

8

MOB

GAIN

SEA

RAIN

POWER

TX

SAVE

TARGET

TRAILS

ZOOM

TLL

ALM

MODE

OFF CENT

EBL1

VRM1

AIS

BRILL MENU

HL OFF

EBL2
VRM2

AUTO

300 (11.81) 119.2 (4.69)

30 (1.18)

74 (2.91)

293 (11.54)

323 (12.72)

146.5 (5.77)146.5 (5.77)

256 (10.08)

199 (7.83)

99.8 (3.93)

92 (3.62)

62 (2.44)

31 (1.22)

Ø7 (0.28)×4

Ø7 (0.28)

Fig. 1

Fig. 2

Flat washer

Spring washer

Bolt

Spring washer

Flat washer

Knob bolt

Nut

Front cover

INSTALLATION AND CONNECTIONS

■ Installing the display unit

DLocation

Select a place for installation which meets the follow­ing important conditions:

➥ The display unit should be placed near the wheel

in the cabin so that an operator may easily view the
radar screen while facing the bow.

➥ To minimize interference, KEEP the unit AT LEAST

THE COMPASS SAFE DISTANCE stated in the se­rial number label on the rear panel away from the
compass and navigation receiver.

➥ Select a position where there is no danger of salt or

fresh water spray or immersion.

➥ Select a location where it is easy to perform mainte-

nance or adjustment after installation.

➥ Select a location which can support the weight of

the display unit.

➥ DO NOT select areas subject to extreme heat, cold,

vibrations or direct sunlight.

• SX-3230 Mounting Bracket

DMounting

The mounting bracket supplied with the display unit al­lows “dashboard” or “overhead” mounting.

q Hold the mounting bracket up to the selected lo-

cation and mark pilot holes for the five installation
holes using the template.

• The template is provide on page 44.

w Drill five holes, 7 mm (0.28 in) in diameter as shown

in the diagram. (Fig. 1)

e Install the bracket using the knob bolts, bolts, nuts

or washers with the supplied accessories. (Fig. 2)

r Adjust the display unit to an adequate view angle.

• Mounting Bracket installation

29

• SX-3230

• Front cover attachment

■ Mounting the EX-2714 scanner unit

45.5 (1.79)

640 (25.2)

150.5 (5.93)

601 (23.66)

256 (10.08)

90.5 (3.56)90.5 (3.56)

Ship’s bow direction

Ship’s bow direction

DLocation

The scanner unit is designed for high-pressure water
jet resistance (except for the cable connectors). Select
a place for installation which meets the following im­portant conditions.

➥ The scanner unit must be near the boat’s center line

and have a good view in every direction. Be sure
there are no objects in the surrounding area which
will interfere with the scanning beam.
Keep the scanner unit away from any exhaust pipes.

➥

Exhaust gas can damage the unit.

➥ When the boat is equipped with a Radio Directional

Finder (RDF) system, keep the scanner unit at least
2 m (6.6 ft) away from any RDF antenna.

• Radiation from the scanner unit can affect the measure­ment data of RDF equipment.

➥ The unit should be placed as high as possible on

the boat to obtain best performance with maximum
range.

➥ If you install two or more radar in one boat, install

one above, and the other(s) below.

➥ The mounting surface must be parallel with the

boat’s waterline.

➥ If the height is insufficient to install the scanner unit,

build a special frame for installation.

DMounting

R WARNING! BE SURE [POWER]/[ ]

is OFF whenever you are working with the scanner
unit.

q Drill four holes, 12 mm (0.47 in) in diameter using

w If the mounting surface or platform is metal, apply a

e Attach the scanner unit to the selected position with

CAUTION: SECURE the four bolts firmly.

INSTALLATION AND CONNECTIONS

8

the supplied template.

sealing compound around the holes to prevent cor­rosion and to waterproof the unit.

the supplied bolts (M10×50 mm or M10×25 mm; de-

pending on your installation needs), at and spring

washers.

Unit: mm (in)

30

Ship’s bow direction

Face the � mark in the direction
of the ship’s bow.

Stern

System cable

Scanner unit assembly

INSTALLATION AND CONNECTIONS

Ferrite EMI filter

Shielded cable
ground wire

w

t

PA cable

Power
connector

e

Power cable

PA cable (Loop the PA cable twice)

q

r

Sealing tube

Sealing nut

System cable

8

■ Wiring the EX-2714 system cable

CAUTION: NEVER cut the supplied system cable.

q Using a hex head wrench*, loosen the four bolts on

the bottom of the scanner unit, and open the unit.

* A Phillips head or at head screwdriver is also usable.

w Loosen the sealing nut on the scanner unit and

pass the system cable through the sealing nut and
sealing tube. (q)

e Insert the black and white PA cable connector into

the PA unit connector J1. (w)

r Connect the shielded cable ground wire to the

ground plate with the screw. (e)

t Clamp the system cable with the ferrite EMI filter

attached near the sealing connector.

Be sure to clamp it tightly. (r)

• Scanner unit assembly (cover removed)

y Connect the power cable (black and red) to the

power connector. (t)

u Tighten the sealing nut, then replace the radome

cover over the scanner unit.

DO NOT stretch the system cable too much, other-

wise a miss contact of the connector may occur.

i Tighten the four bolts on the bottom of the scanner

unit. (Use a torque wrench until the scale on the

wrench reads 5.0 N•m; 3.69 lbf•ft.)

• The four projections around the circumference of the ra-

dome cover show the positions of the bolt receptacles.

31

• Connect the system cable

■ Mounting the EX-2780 scanner unit

Ship’s bow direction

190 (7.48)

399 (17.71)

381 (15)

Ship’s bow direction

302 (11.89)

248 (9.76)

1200 (47.24)

20.5 (0.81)

R5.5 (0.22)

11 (0.43)

262 (10.31)

281 (11.06) 98 (3.86)

152 (5.98)

190 (7.48)

DLocation

The scanner unit is designed for high-pressure water
jet resistance (except for the cable connectors). Select
a place for installation which meets the following im­portant conditions.

DMounting

R WARNING! BE SURE [POWER]/[ ]

is OFF whenever you are working with the scanner
unit.

INSTALLATION AND CONNECTIONS

8

➥ The scanner unit must be near the boat’s center line

and have a good view in every direction. Be sure
there are no objects in the surrounding area which
will interfere with the scanning beam.

➥ Keep the scanner unit away from any exhaust pipes.

Exhaust gas can damage the unit.

➥ When the boat is equipped with a Radio Directional

Finder (RDF) system, keep the scanner unit at least
2 m (6.6 ft) away from any RDF antenna.

• Radiation from the scanner unit can affect the measure­ment data of RDF equipment.

➥ The unit should be placed as high as possible on

the boat to obtain best performance with maximum
range.

➥ If you install two or more radar in one boat, install

one above, and the other(s) below.

➥ The mounting surface must be parallel with the

boat’s waterline.

➥ If the height is insufficient to install the scanner unit,

build a special frame for installation.

q Drill four holes, 12 mm (0.47 in) in diameter using

the supplied template.

w If the mounting surface or platform is metal, apply

sealing compound around the holes to prevent cor­rosion, and to waterproof the unit.

e Attach the scanner unit to the selected position with

the supplied bolts (M10×40 mm), at and spring
washers.

CAUTION: SECURE the four bolts firmly.

32

8

Allen wrench

Scanner body

Fig. 1

q

w

Ferrite EMI filter

Cable tie

Cable clamp

i

o

Sealing tube

Sealing Nut

e

Fig. 2

Fig. 3

Shielded cable
ground wire

System cable

u

r

t

Looped
cable tie

Power cable

PA cable

y

INSTALLATION AND CONNECTIONS

■ Wiring the EX-2780 system cable

q Loosen the four bolts on the bottom of the scanner

CAUTION: NEVER cut the supplied system cable.

unit body using the supplied allen wrench (q), and
open the top cover. (w)

w

Loosen the sealing nut on the scanner unit and pass
the system cable through the sealing nut and seal­ing tube. (e)

e Connect the power cable (black and red) connec-

tor to the power unit connector through the looped
cable tie. (r)

r Insert the PA cable (black and white) connector into

the PA unit connector. Be sure to follow the diagram
below carefully. (t)

• Secure the looped PA cable with the looped cable tie.

(y)

t Connect the shielded cable ground wire to the chas-

sis with the screw, as shown in the diagram. (u)

y Clamp the system cable with the cable clamp metal

fitting using a screw near the sealing connector.
(i)

Be sure to clamp it tightly.
u Clamp the system cable with the ferrite EMI filter

attached near the sealing connector. (o)

Be sure to clamp it tightly.
Secure the ferrite EMI filter with cable tie.
i Tighten the sealing-nut, then close the top cover.

DO NOT stretch the system cable too much, other-

wise a miss contact of the connector may occur.

o Tighten the four bolts on the bottom of the scanner

body. (Use a torque wrench until the scale on the

wrench reads 9.8 N•m; 7.23 lbf•ft.)

33

■ Attaching the EX-2780 scanner unit

Unit: mm (inch)

Peel the sheath

To the displayTo the scanner

18±2

(0.71±0.08)

410±5

(16.14±0.2)

Scanner unit

Stay

Sealing
washer
Flat washer

Belleville washer
(Install in this direction)

Bolt

Lubricant fitting place

Grounding wire

q Put the scanner unit on the stay, then attach the

antenna rotor with the supplied bolts (M8×18 mm),

at and belleville washers and a sealing washer.

Be sure to install the belleville washer in the direc-

tion as shown below. (Fig. 1)

w Apply the lubricant specified below, or an equivalent

one, to the motor bearing, if required.

• Manufacture: ESSO

Type: BEACON 325

e Connect a grounding wire (purchase locally) to the

ground plate with the supplied terminal if required.
(Fig. 2)

NOTE: When using the optional system cable.

Peel the outer sheath of the system cable when
using the optional system cable OPC-1078A.

BE CAREFUL! DO NOT cut the inner shield wire when
peeling the outer sheath.

INSTALLATION AND CONNECTIONS

8

Fig. 1

Fig. 2

34

9

DAntenna rotation speed

The antenna rotation speed can be selected between
36 rpm and 24 rpm. (Default: 36 rpm)
Hold down [–]/[ ] for 1 second to select 24 rpm,
hold down [+]/[ ] for 1 second to select 36 rpm.

DTest pattern indication

To check the LCD display, a test pattern can bee dis­played.
While holding down [MENU]/[
to display the test pattern.
To return to normal operating mode, turn OFF the
power, then turn it ON again.

DSimulator screen

The MR-1200RII/TII/TIII has simulator screen capabil­ity.
q While holding down [BRILL]/[

[ ] to turn ON the power.

w After the count down ends, the standby screen ap-

pears.

e Push [TX (SAVE)]/[ ] to display the simula-

tor screen.

r To return to normal operating condition, turn OFF

the power, then ON again.

OTHER FUNCTIONS

], turn ON the power

], push [POWER]/

DAll reset

q While holding down [TARGET]/[

(VRM1)]/[ ] and [EBL2 (VRM2)]/
[ ]

w Follow the guidance.

, turn ON the power.

], [EBL1

35

■ Service man menu

SERVICE MAN

SPD ADJ.

HDG ADJ. 0.0

˚

HV

SETUP MEMORY RECALL

RANGE

24000 MONITOR

HEATER

5731.0H

TX TIME

30.0

OUTPUT

ENGLISH

VOLTAGE

SAVE MG

340

75

3.0

0.55

TIMING ADJ.

1/8 3/4 2 6

1/4 1 3 8

1/2 1.5 4 12

16
24
32

36 72
48
64

CAUTION: The SERVICE MAN MENU is available
for service purposes only. DO NOT change any
setting on the menu, otherwise the equipment may
not operate at it’s original performance.

To open the “SERVICE MAN” menu.
Push [MENU]/[

] one or more times to show the

“SERVICE MAN” menu.

■ Select the language

Menu screens can be displayed in ENGLISH and
(CHINESE).*

* Depending on version, menu screen can be displayed in

English and Korean.

After opening the “SERVICE MAN” menu;

q Push [p] to show the present language.
w Push [t] or [u] to select the desired language, then

push [q] to continue the setting.

e Push [MENU]/[ ] to exit the “SERVICE MAN”

menu.

SERVICE MAN MENU

10

DTIMING ADJ.

• Corrects the distance.

DHDG ADJ.

• Adjusts the electronic heading line adjustment.

DSPD ADJ.

• Enter the pulse rate of the speed sensor.

DRANGE

1

•

⁄8, 1⁄4, 1⁄2, 3⁄4, 1, 1.5, 2, 3, 4, 6, 8, 12, 16, 24, 32, 36,

48*, 64†, 72† : Choose the selectable screen range.

*MR-1200TII/TIII

†

MR-1200TIII only

D SETUP MEMORY

• The present value is displayed by pushing [u], then

select the desired item from “RECALL” and “SAVE”
using [q].

q Push [u] to display “RECALL” and “SAVE”.
w Push [p] or [q] to select “RECALL” or “SAVE”.
e Push [u].

• “SURE ?” is displayed.

r Push [u] to perform.
t Push [u]

to cancel

.

• When recall is performed without saving a setup,

it will become an initial value at the time of factory
shipments.

DOther readouts

• OUTPUT VOLTAGE:

Shows the voltage level for the

scanner unit from the display unit.

• HV (High voltage) : Shows the voltage level in the

high-voltage unit in the scanner
unit.

• MONITOR: Shows the voltage level for check­ing the receiver unit operation.

• HEATER: Shows the heater current.

• MG: Shows the current level for the

Magnetron.

• TX TIME: Shows the total transmitted time.

36

10

Proper adjustment Improper, pulling inward Improper, pushing outward

1

T.VECT

0.000NM

NM

CURS

SOG

H UP

000.0˚R
HDG

IR

ES

SERVICE MAN

SPD ADJ.

0.0

˚

HV

SETUP MEMORY

RANGE

24000 MONITOR

HEATER

5731.0H

TX TIME

30.0

OUTPUT

ENGLISH

VOLTAGE

MG

340

75

3.0

0.55

TIMING ADJ.

1/8 3/4 2 6 16 36
1/4 1 3 8 24

1/2 1.5 4 32

HDG ADJ.

1

T.VECT

0.000NM

NM

CURS

SOG

H UP

000.0˚R
HDG

IR

ES

SERVICE MAN

SPD ADJ.

10.0

˚

HV

SETUP MEMORY

RANGE

24000 MONITOR

HEATER

5731.0H

TX TIME

30.0

OUTPUT

ENGLISH

VOLTAGE

MG

340

75

3.0

0.55

TIMING ADJ.

1/8 3/4 2 6 16 36
1/4 1 3 8 24
1/2 1.5 4 32

HDG ADJ.

48

12

48

12

Push [ ] or [ ]

Angle difference

SERVICE MAN MENU

■ TIMING adjustment

The system cable length affects the sweep timing.
When the cable length adjustment is not correct, a
straight target is shown as a curved echo. Thus, a
cable length adjustment is necessary.

q Position your boat near a straight target such as

breakwater, wharf, etc.

w Push [–]/[

1

⁄4 NM range.

] one or more times to select 1⁄8 or

■ HDG adjustment

If the heading marker line differs from the exact bow
direction, correct the heading marker line as follows.
This function may be helpful when the scanner has not
been mounted exactly in the line with the bow.

e Push [TX (SAVE)]/[

] to display the target

on the screen.

r Push [MENU]/[ ] one or more times to select the

“SERVICE MAN” menu.

t Push [q] one or more times to select “TIMING

ADJ.”

y Push [u] to adjust the echo until it becomes straight.

(see below)

u

Push

[MENU]/[ ]

to return to the normal screen.

q Line up the bow of the boat with an identifiable tar-

get.

w Push [TX (SAVE)]/[

] to display the target

on the screen.

e Push [MENU]/[ ] one or more times to select the

“SERVICE MAN” menu.

r Push [q] one or more times to select “HDG ADJ.”
t Push [t] or [u] to adjust, until the target matches

the heading marker. (the difference can be read out
on the menu screen)

y Push [MENU]/[ ] to return to the normal screen.

37

■ SPD adjustment

SERVICE MAN

SPD ADJ.

HDG ADJ. 0.0

˚

HV

SETUP MEMORY

24000 MONITOR

HEATER

5731.0H

TX TIME

30.0

OUTPUT

ENGLISH

VOLTAGE

MG

340

75

3.0

0.55

TIMING ADJ.

1/8 3/4 2 6

1/4 1 3 8

1/2 1.5 4 12

16
24
32

36
48

RANGE

*1⁄4 NM range will be skipped.

72

64

■ RANGE selection

SERVICE MAN MENU

10

q Push [MENU]/[ ], [q] and [u] one or more times

to display the “SERVICE MAN” menu.

w Hold down [q] until the “SPD ADJ.” section be-

comes highlighted.

e Push [t] or [u] to enter the pulse rate of the speed

sensor unit (pulse numbers per one nautical mile).

r Push [MENU]/[ ] to return to the normal screen.

q Push [MENU]/[ ], [q ] and [u] to display the

“SERVICE MAN” menu.

w Hold down [q] until the “RANGE” section becomes

highlighted.

e Push [p ] or [q] to choose the selectable screen

ranges with [+]/[ ] or [–]/[ ] on the dis­play.

r Push [t] to skip from the range selection, or push

[u] to cancel skipping.

t Push [MENU]/[ ] to return to the normal screen.

Selectable ranges:

1

⁄8, 1⁄4, 1⁄2, 3⁄4, 1, 1.5, 2, 3, 4, 6, 8, 12,

16, 24, 32, 36, 48*, 64†, 72† (NM)

†

64 and 72 NM ranges are available for the MR-1200TIII only.

*48 NM range is available for the MR-1200TII/TIII.

38

11

ERROR MESSAGE

■ Error message list

Message Condition

BRG INPUT FAIL*

TRIG SIGNAL FAIL*1 • If the TRIGGER signal is interrupted for more than 15 seconds, an

SHM SIGNAL FAIL*

POSN INPUT FAIL*

CHECK SCANNER CONNECTION*

1

*

Push any key to cancel the error message and beep tone. Turn OFF the power, then check the external data

cable connection.
*2 An electricity failure may occur, turn OFF the power, then consult your dealer or service person.
*3 Push any key to cancel the error message and beep tone.
*4 Turn OFF the power, then check the system cable connections.

1

2

• If the SHM signal is interrupted for more than 15 seconds, an alarm

1

• If the position signal is interrupted for more than 15 seconds, an

• The Azimuth signal is interrupted. An alarm sounds within 5 seconds and

the display reverts to H UP mode in approximately 1 minute.

alarm sounds.

sounds.

alarm sounds.

4

• The system cable may not be properly connected.

■ AIS error message list

An error message is displayed when a system error is received from the AIS unit.
See the AIS unit instructions for details.

(Some examples)

Message contents

AIS: TX MALFUNCTION

AIS: ANTENNA VSWR EXCEEDS LIMIT

AIS: RX CHANNEL 1 MALFUNCTION

AIS: RX CHANNEL 2 MALFUNCTION

AIS: RX CHANNEL 70 MALFUNCTION

AIS: GENERAL FAILURE

AIS: MKD CONNECTION LOST

AIS: EXTERNAL EPFS LOST

AIS: NO SENSOR POSITION IN USE

AIS: NO VALID SOG INFORMATION

AIS: NO VALID COG INFORMATION

AIS: HEADING LOST/INVALID

39

AIS: NO VALID ROT INFORMATION

Only the first 29 digits of the error message are displayed. If the message is longer than 30 digits, “...” is displayed
after the 29th digit.

MAINTENANCE

Continued, reliable operation of the radar depends on how you care for it. The simple maintenance tips that follow
can help you save time and money, and avoid premature equipment failure.

12

■ Periodic maintenance

R WARNING! BE SURE [POWER]/[ ]
is OFF before performing any maintenance.

■ Scanner unit maintenance

R WARNING! BE SURE [POWER]/[ ]
is OFF whenever you are working with the scanner
unit.

q Keep the equipment as clean as possible.

• Use a soft cloth to remove dirt, dust and water.

w Check all hardware for loose screws, bolts, etc.
e Check cables and terminal connections.

DCleaning

q Wipe the surface of the scanner with a clean soft

cloth.

• DO NOT use harsh solvents such as benzine or alco-
hol.

w Check that there is no dirt or caked-on salt.

• A heavy deposit of dirt or caked-on salt on the painted

surface of the upper scanner unit will cause a consider­able drop in radar performance.

e Check for cracks or deterioration of the rubber pack-

ing and replace it if necessary.

DPainting (MR-1200TII/TIII)
To prevent the corrosion, paint the surface of the

scanner body (except the antenna unit) twice a year
or more.

DMounting

Check the mounting bolts of the scanner unit and

tighten if necessary.

■ Display unit maintenance

R WARNING! BE SURE the power is OFF be­fore working on the radar.

DCleaning

Dirt on the LCD will, in time, leave a film of contami­nates which tend to dim the picture.

q Wipe the surface of the display unit with a clean soft

cloth.

• DO NOT use strong solvents such as benzene or alco-
hol.

w If the picture is still dim, clean the LCD screen.

■ Options

• OPC-1077A SYSTEM CABLE (for only MR-1200RII)
Allows you to install the display unit and scanner up to 20 m (65.6 ft) apart.

• OPC-1078A SYSTEM CABLE

Allows you to install the display unit and scanner up to 30 m (98.4 ft) apart.

40

13

SPECIFICATIONS

D General

• Minimum range: 25 m; 82 ft (when measurement range is

• Maximum range: 36 NM (MR-1200RII; when measurement range is 36 NM)

48 NM (MR-1200TII; when measurement range is 48 NM)
72 NM (MR-1200TIII; when measurement range is 72 NM)

• Measurement range: 1⁄8, 1⁄4, 1⁄2, 3⁄4, 1, 1.5, 2, 3, 4, 6, 8, 12, 16, 24, 32, 36, 48*,

64†, 72† (NM) *only MR-1200TII/TIII,

• Preheat time:

• Connection length between display and scanner unit: 15 m; 49.2 ft (MR-1200RII),

90 seconds

20 m; 65.6 ft (MR-1200TII/TIII, optional for MR-1200RII),
30 m; 98.4 ft (optional)

1

⁄8 NM)

†

MR-1200TIII

D Display unit

• LCD display: 12.1-inch TFT LCD display

• Pixels: 600×800 dot

• LCD mounting: Vertical

• Input: NMEA 0183 format (for navigation receiver),
N+1 format (uxgate compass sensor),

AUX,
IEC61162-2 format (for AIS unit)

• Output: NMEA 0183 format

• Power supply requirement: 10.2 to 42 V DC

• Power consumption (at zero wind velocity): Approximately 60 W (MR-1200RII)

Approximately 70 W (MR-1200TII)
Approximately 80 W (MR-1200TIII)

• Usable temperature range: –15˚C to +55˚C; +5˚F to 131˚F

• Dimensions (Mounting bracket is included):

(Projections are not included) 11.8 (W)×12.7 (H)×4.7 (D) in

• Weight (Mounting bracket is included): Approximately 4.3 kg; 9.5 lb

300 (W)

×323 (H)×119.2 (D) mm,

41

SPECIFICATIONS

D Scanner unit

◆ EX-2714 (Radome)

• Type: 60 cm (2 ft.) Slotted Waveguide Array,
enclosed in a radome.

• Rotation speed (typical): 24 rpm, 36 rpm

• Beam width (typical): Horizontal beam 4˚

Vertical beam 22˚

• Side lobe (typical): –22 dB

• Polarization: Horizontal

• Transmission frequency: 9410 MHz ±30 MHz P0N

• Peak output power: 4 kW

• Pulse width: 80 ns/2160 Hz, 80 ns/1440 Hz, 250 ns/1440 Hz,

350 ns/1440 Hz, 350 ns/720 Hz, 900 ns/720 Hz

• Mixer and Local Oscillator: Microwave Integrated Circuit

• Transmitting Tube: Magnetron MAF1421B

• Modulator: FET switching

• Duplexer: Circulator

• Tuning system: Automatic/manual selectable

• Intermediate frequency: 60 MHz

• IF Band width: 10 MHz, 3 MHz

• Dimensions:

• Usable temperature range: –25˚C to +70˚C; –13˚F to 158˚F

• Relative Humidity: Less than 95% at 40˚C (+104˚F)

• Weight: Approximately 8 kg; 17.5 lb (without cable)

640 (W)

25.2 (W)×10.1 (H)×25.2 (D) in

×256 (H)×640 (D) mm,

13

◆ EX-2780 (Open array)

• Type: 120 cm (4 ft.) Slotted Waveguide Array

• Rotation speed (typical): 22 rpm

• Beam width (typical: Horizontal beam 2˚

Vertical beam 25˚

• Side lobe (typical): –24 dB

• Polarization: Horizontal

• Transmission frequency: 9410 MHz ±30 MHz P0N

• Peak output power: 4 kW (MR-1200TII), 6 kW (MR-1200TIII)

• Pulse width: 80 ns/2160 Hz, 80 ns/1440 Hz, 250 ns/1440 Hz,

350 ns/1440 Hz, 350 ns/720 Hz, 900 ns/720 Hz,
900 ns/660 Hz* *only MR-1200TIII

• Mixer and Local Oscillator: Microwave Integrated Circuit

• Transmitting Tube: Magnetron MAF1421B (MR-1200TII)

• Modulator: FET switching

• Duplexer: Circulator

• Tuning system: Automatic/manual selectable

• Intermediate frequency: 60 MHz

• IF Band width: 10 MHz, 3 MHz

• Diameter of rotation/height: 1205/381 mm; 474/15 in

• Usable temperature range: –25˚C to +70˚C; –13˚F to 158˚F

• Relative Humidity: Less than 95% at 40˚C (+104˚F)

• Weight: Approximately 17 kg; 37.4 lb (without cable)

(MR-1200TIII only), 24 rpm, 36 rpm

MAF1422B (MR-1200TIII)

All stated specifications are subject to change without notice or obligation.

42

14

EXTERNAL DATA LIST

The following external bearing, speed, position and waypoint data is (are) required , when you use the radar func­tions.

EXTERNAL DATA INPUT

[NMEA1]*

connector

“HDG”,

“HDM”,“HDT”

N+1, AUX LOG

FUNCTION DISPLAY BEARING AIS SPEED POSITION WAYPOINT

HEAD UP HU

COURSE UP CU Required

NORTH UP NU Required

1

TRUE MOTION

SPEED DISPLAY

HEADING BEARING HDG Required

WAYPOINT WPT Required “RMC”, “GGA”, “GLL” or “GNS” “WPL” or “BWC”

OWN VECTOR

MOB MOB Required “RMC”, “GGA”, “GLL” or “GNS”

ATA

VRM/WPT/MOB estimated

time of arrival

MAGNETIC VARIATION

(AUTO)

TLL Required “RMC”, “GGA”, “GLL” or “GNS”

AIS (Display only) AIS Required “VDM” “RMC”, “GGA”, “GLL” or “GNS”

AIS (CPA/TCPA Alarm)

Alarm status*

4

OG*

TW*

OG*

TW*

OG*

TW*

OG*

TW*

OG*

TW*

OG*

TW*

TM Required “RMC”, “GGA”, “GLL” or “GNS”

1

TM Required LOG

1

SOG “RMC” or “VTG”

1

STW LOG

1

1

1

ATA Required “RMC” or “VTG”

1

ATA Required LOG

1

1

1

AIS Required “VDM” “RMC” or “VTG” “RMC”, “GGA”, “GLL” or “GNS”

1

AIS Required “VDM” LOG “RMC”, “GGA”, “GLL” or “GNS”

Required “RMC” or “VTG”

Required LOG

2

“VDM”,

“ALR”*

“ALR”

3

“RMC”, “GGA”, “GLL”, “GNS”, “VTG”, “WPL”, “BWC”

“RMC” or “VTG”

LOG

“RMC” or “VTG”

[NMEA2]*

2

connector

43

EXTERNAL DATA OUTPUT

[NMEA2]*

“RMC”, “GGA”, “GLL”, “VTG”, “TTM” “TLL”, “RSD”

2

connector

*1 G; Over ground, TW; Through the water
*2 [NMEA1] and [NMEA2] connectors; see page 28.

3

*

AIS input also receives “RMC”, “GGA”, “GLL”, “VTG” and “GNS” sentences.
If the NMEA2 input does not receive these, the sentences from the AIS input are used.
*4 The system error is displayed from the AIS unit.

• “HDG”, “HDM”, “HDT”, “RMC”, “GGA”, “GLL”, “GNS”, “VTG”, “WPL”, “BWC”, “TTM”, “TLL” and “RSD” are SEN-

TENCES of the NMEA0183.

• If BRG INPUT is set to “GPS”, “RMC” of [NMEA2] connector or COG (Course Over the Ground) of “VTG” a bow it

receives as a direction, even if there is no direction information (compass etc.) in [NMEA1] connector, the screen

display of the North rise etc. is possible.

However, direction accuracy falls when the speed of a ship is set to 2 knots or less, or when exceeding 3 knots

a bow it does not receive as direction data. Moreo, the inuence of measurement position accuracy or a current

an actual bow it may differ from a direction.

99.8 mm (3

15

⁄16 in)

199.6 mm (7

27

⁄32 in)

256 mm (10

3

⁄32 in)

Radius is

3.5 mm

(

1

⁄8 in)

Radius is

3.5 mm

(

1

⁄8 in)

31 mm (1 7⁄32 in)

62 mm (2

7

⁄16 in)

92 mm (3

5

⁄8 in)

• SX-3230

Display mounting bracket template

Ship’s bow direction

Radius is 6 mm
(

1

⁄4 in)

• EX-2714 Radome template

90.5 mm (39⁄16 in)

90.5 mm (39⁄16 in)

150.5 mm (515⁄16 in)45.5 mm (125⁄32 in)

• EX-2780
Open array type
template

Radius is 6 mm

1

(

⁄4 in).

190 mm (715⁄32 in)

131 mm (55⁄32 in)

Ship’s bow direction

131 mm (55⁄32 in)

A-7071H-1EX
Printed in Japan
© 2013 Icom Inc.

Printed on recycled paper with soy ink.

1-1-32 Kamiminami, Hirano-ku, Osaka 547-0003, Japan