Icom MR-570R User Manual

T

1.296NM

O:01

O:01

0.566NM

S0672˚

EBL/VRM1

EBL/VRM2

R

R

S0162˚

3

(1)

NM

2530

˚

TM

Heading indicator

Mode indicator*

5

Cross line cursor

EBL1/2

VRM1/2

MOB symbol

Fixed range rings*

1

Fixed ring range readout*

1

EBL1/VRM1, EBL2/VRM2
readouts*

4

Tuning level indicator
Screen range readout

Heading line

Alarm zone*

2

Own ship vector indicator

Waypoint marker*

3

■ Display information

MR-570R

OPERATING GUIDE

*1Appears when the “RING” of the FUNCTION menu is

turned ON.

*

2

Appears when the alarm function is in use.

*3Appears when the “WPT” of the FUNCTION menu is

turned ON. To display the waypoint marker, bearing data
and NMEA data with 0183 format is necessary.

*

4

This area may differ depending on DATADISP selection in
the FUNCTION menu. Nautical miles (NM) and kilometres
(KM) can be selected in the INT.SETTING menu as the dis­tance unit.

*

5

North-up (N UP) and Course-up (C UP) screens require ex­ternal bearing data. True Motion (TM) screen requires bear­ing data and LOG or position data.

■ BRILL menu

Push [BRILL] to select the brilliance adjustment menu.

■ ADJ (Adjust) menu

Push [ADJ] to select the adjustment menu.

■ Function menu

Push [MENU] to select the function menu.

RING

D.RANGE
ZONE ALARM
EBL/PI
DATA DISP
L/L DISP
WPT
OWN VECT
TRAIL TIME
SAVE TIME

FUNCTION

OFF ON

NAR. MID. WIDE

IN OUT

TRUE 360

R

PT/SB
OFF CURS SHIP WPT
OFF ON
OFF ON
OFF ON

6MIN
15MIN

TUNE GAIN SEA RAIN IR ES PULSE

ON

ON LP

OFF

OFF SP

A
U
T
O

A
U
T
O

BRILL. CONTR. DISP.

POSI

NEGA

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

Count on us!

A-6014H-2EX Printed in Japan

© 2001 Icom Inc.

■ Control functions

[TX (SAVE)]

Toggles between the TX mode and the standby
mode. Turns the power save function ON when
pushed and held.

[HL OFF]

Push [ADJ] and [MENU] simultaneously to turn
off all indications except the PPI (Plan Position
Indicator) screen, temporarily.

[ADJ]

Push to show the adjust menu.

[UP] [DOWN] [RIGHT] [LEFT]

Set the cross line cursor, alarm area, EPA tar­get, etc. according to the switch pushed.

[+] [–]

Push to increase or decrease the screen
range.

[MOB]

Push to mark the man overboard point on the
screen.

[ALM]

Toggles the alarm function ON and OFF. En­ters the alarm area setting condition when
pushed and held.

[EBL1 (VRM1)]

Displays the electronic bearing line 1 (EBL1)
and the variable range marker 1 (VRM1) on
the cross line cursor position from own ship.

[POWER]

Turns power ON and OFF.

[BRILL]

Turns the brilliance adjustment menu ON or OFF.

[MENU]

Toggles the FUNCTION and EPA menu. Push
[ ]/[ ] keys to select the items and push
[ ]/[ ] keys to change the setting.

[ZOOM]

Push [MOB] and [TRAILS] simultaneously to
toggle the ZOOM function ON and OFF.

[TRAILS]

Toggles the trail function ON and OFF.

[OFF CENT]

Push [ALM] and [MODE] simultaneously to
turn the OFF CENTER function ON or OFF.

[MODE]

Push to select one of Head-up (H UP), Course­up (C UP), North-up (N UP) or True motion
(TM) screens.

[PI]

Push [EBL1] and [EBL2] simultaneously to turn
the parallel index line ON.

•Push [EBL1] or [EBL2] to turn the line OFF.

[EBL2 (VRM2)]

Push to display the electronic bearing line 2
(EBL2) and the variable range marker 2
(VRM2) while EBL1 and VRM1 are displayed
on the screen.

[EPA]

Push to enter the EPAposition data.
Push [EPA] for 0.5 sec. to toggle the EPA dis­play and navigation display.

■ EPA menu

Push [MENU] twice to select the EPAmenu.

■ INT. SETTING menu

Push [MENU] twice to select the EPA menu. Push [ ] 6
times to select the INT. SETTING menu. Push [ ] to enter.

BEEP

DIST UNIT
BRG
MAG VER

BRG INPUT
SPD INPUT
TX INH START
TX INH ANGLE
SERVICE MAN

INT.SETTING

OFF ON

NM KM WI
TRUE MAG
AUTO MANU.

!! 0.0 E

NMEA

N+1 AUX

GPS LOGOF

0
0

EPA

VECT
No.DISP
ALARM
CPA LIMIT
TCPA LIMIT

INT.SETTING

EPA MENU

OFF ON
TRUE REL

OFF SEL ALL

OFF ON

1.0NM
10MIN

INSTRUCTION MANUAL

MARINE RADAR

MR-570R

i

SYSTEM COMPONENTS

MODEL NAME

SX-2464

DISPLAY UNIT

EX-2473 (5.7 inch LCD)

SCANNER UNIT

EX-2474 (Radome type)

•EX-2473 (5.7 inch LCD display unit)
Qty.

q NMEA connector (NS1007 7P)............................. 2

w Spare fuse (FGB 10 A) ........................................ 1

e Spare fuse (FGB 5 A: for over 24 V power supply ) ..... 1

r DC power cable (OPC-928).................................. 1

t NMEA connector cover......................................... 2

y Self-tapping screws (5 x 30)................................. 4

u Spring washers (M5) ........................................... 4

i Flat washers (M5) ................................................ 4

o Mounting spacer................................................... 4

!0 Mounting rubbers ................................................. 4

•EX-2474 (Scanner unit)
Qty.

q System cable (OPC-1075: 10 m).......................... 1

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

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

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

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

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

SUPPLIED ACCESSORIES

and Icom Inc. are registered trademarks of Icom Incorporated (Japan) in the United States and/or other

countries.

ii

IMPORTANT

READ ALL INSTRUCTIONS carefully and com-

pletely before attempting to operate the marine radar.

SAVE THIS INSTRUCTION MANUAL. This

manual contains important safety and operating in­structions for the MR-570R.

RNEVER let metal, wire or other objects touch any

internal part of the radar.

RNEVER place the radar within the reach of chil-

dren.

RNEVER expose the display unit to rain, salt water

or any other liquids.

NEVER connect the radar to AC or more than 42 V

DC. This will damage the radar.
A VOID placing the display unit in excessively dusty en-

vironments or in direct sunlight.
A VOIDplacing the display unit near heating equipment

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

AVOID using the scanner unit in areas where the tem­perature is below –25˚C (–13˚F) or above +70˚C
(+158˚F). AVOID using the display unit in areas where
the temperature is below –15˚C (+5˚F) or above +55˚C
(+131˚F).

AVOID using strong solvents such as benzene or al­cohol for cleaning the radar, as they may damage the
surfaces.

PRECAUTIONS

FOREWORD

Thank you for purchasing ICOM’s MR-570R MARINE

RADAR.

The radar is designed especially for fishing boats. It
has powerful transmission power, a 5.7 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.

EXPLICIT DEFINITIONS

The following explicit definitions apply to this instruc­tion manual.

WORD

RWARNING

RCAUTION

NOTE

DEFINITION

Personal injury, fire hazard or elec­trical shock may occur.

Equipment damage may occur.
If disregarded, inconvenience only.

personal injury , fire hazard or elec­trical shock will not occur.

CAUTION!

SART signal may not be detected and may

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

Follow the following settings to detect the
SART signal on the screen.

1. Select the screen range between 6 NM
to 12 NM.

2. Set the [GAIN]* as high as possible.

3. Set the [SEA]* to minimum.

4. Set the [RAIN]* to minimum.

5. Turn the [IR]* OFF.

6. Turn the [ES]* OFF.

*See the [ADJ] menu on p. 6.

TABLE OF CONTENTS

iii

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

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

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

PRECAUTIONS ........................................................ ii

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

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

TABLE OF CONTENTS ............................................iii

1 CAUTION ............................................................. 1

DANGER! HIGH VOLTAGE .................................. 1

RADIATION HAZARD ........................................... 1

2 PANEL DESCRIPTION ................................... 2 –5

■Front panel ........................................................ 2

■Screen ............................................................... 4

3 MENU .............................................................. 6 –9

■BRILL MENU ..................................................... 6

■ADJ (Adjust menu)............................................. 6

■FUNCTION MENU............................................. 7

■EPA..................................................................... 8

■INT. SETTING .................................................... 9

4 BASIC OPERATION .................................... 10–13

■Checking the installation ................................. 10

■Turning power ON/OFF.................................... 10

■Basic operation ................................................ 11

■RAIN function................................................... 12

■SEAfunction..................................................... 12

■OFF CENTER function..................................... 12

■IR function ....................................................... 13

■ECHO STRETCH function .............................. 13

■ZOOM function ................................................ 13

■TRAILS function .............................................. 14

■Power save function ........................................ 14

■Ship speed indication ...................................... 15

■Position indication ........................................... 15

■Way point indication......................................... 15

■Long pulse function.......................................... 15

■Bearing setting ................................................ 15

5 DISTANCE AND DIRECTION

MEASUREMENTS ...................................... 16 –18

■Distance measurement ................................... 16

■Bearing and Distance measurement ............... 17

■Advanced measurement ................................. 18

6 ALARM FUNCTION ........................................... 17

■Alarm zone setting ........................................... 19

■Zone alarm setting ........................................... 19

7 EPA (Electronic Plotting Aid) .................... 20–22

■EPA (Electronic Plotting Aid) ............................ 20

■EPA menu setting ............................................ 20

■EPA operation .................................................. 21

■Correct the target ............................................ 21

■Clear the target ................................................ 22

■Plotting marks .................................................. 22

■Course and speed vector ................................ 22

■Plots ................................................................ 22

8 BASIC RADAR THEORY ............................ 23–25

■Side-lobe echoes ............................................. 23

■Indirect echoes ................................................ 23

■Multiple echoes ............................................... 24

■Minimum range ................................................ 24

■Blind and Shadow sectors ............................... 25

■Target resolution............................................... 25

9 INSTALLATION AND CONNECTIONS ........ 26–30

■Connecting the units ........................................ 26

■Power source requirement .............................. 26

■Ground connection............................................26

■Installing the EX-2373 display unit .................. 27

■Mounting the EX-2374 scanner unit ............... 28

■Wiring the system cable .................................. 29

10 SERVICE MAN MENU .............................. 31–34

■Service man menu .......................................... 31

■SPD adjustment ............................................... 32

■HDG adjustment............................................... 32

■TIMING adjustment ......................................... 33

■MBS adjustment .............................................. 33

■RANGE selection ............................................. 34

■Tuning adjustment............................................ 34

■Auto gain adjustment........................................ 34

11 ERROR MESSAGE ......................................... 35

■Error message list ........................................... 35

12 MAINTENANCE ............................................... 36

■Periodic maintenance ...................................... 36

■Scanner unit maintenance ............................... 36

■Display unit maintenance ................................ 36

■Options ............................................................ 36

13 SPECIFICATIONS ........................................... 37

14 EXTERNAL DATALIST ................................... 38

15 TEMPLATE..................................................39–41

■Template for the display unit

•EX-2473 (LCD Display)....................................39

■Template for the scanner unit

•EX-2474 (RADOME)........................................41

1

CAUTION

1

The MR-570R is supplemental aids to navigation and are not intended to be a substitute for
accurate and current nautical charts.

DANGER! HIGH VOLTAGE

• NEVER OPEN THE UNIT
This product contains high voltage that could be FATAL. This product has no user-servicable

parts inside. All repairs and adjustments MUST be made by a qualified electronics technician
at your Marine Navigation Dealer.

• HIGH VOLTAGE
High voltages of up to 3,500 volts are used in this equipment. Although prudent measures for

safety have been adopted, sufficient care must be taken in the operation, maintenance and
adjustment of the equipment.

Electric shock of 1,000 volts or more may cause electrocution and death; even an electric
shock of only 100 volts may be fatal.

• PREVENTION OF ELECTRIC SHOCK

(FOR QUALIFIED ELECTRONIC TECHNICIANS ONLY)

To prevent such accidents, turn OFF the power source and do not reach inside the unit until
you have:
q Discharged the capacitors by disconnecting the power cable from the power source for 5

min.;

w 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.

RADIATION HAZARD

• Radiation emitted from the scanner unit can be harmful, particularly to the eyes. To avoid harm­ful radiation, ensure the radar power is in the OFF position before beginning work on the scan­ner unit.

• The maximum distances from the antenna at which radio frequency radiation levels of 100

W/m

2

and 10 W/m2as follows.

PANEL DESCRIPTION

2

2

■ Front panel

MARINE RADAR

q POWER SWITCH [POWER] (p. 10)

Turns power ON and OFF.

•The standby screen appears for 90 sec. while warming
up the magnetron.

• The initial screen appears with a beep after the power

has been turned ON.

w EBL1 (VRM1) SWITCH [EBL1 (VRM1)] (pgs. 16–18)

Push to display the electronic bearing line 1 (EBL1)
and the variable range marker 1 (VRM1) on the
cross line cursor position from own ship.

•EBL1 bearing and VRM1 distance are displayed, in the
bottom window.

•When EBL1 and VRM1 are displayed, the beginning of
EBL2 appears at own ship or the intersection point of
EBL1 and VRM1.

e ALARM SWITCH [ALM] (p. 19)

Push [ALM] to toggle the alarm function ON and
OFF.
Push and hold [ALM] for 0.5 sec. to enter the alarm
area setting condition.

•Push [ ]/[ ]/[ ]/[ ] key to move the cross cursor to
the zone starting point, then push [ALM] for 0.5 sec. The
starting ring of the zone is created. Then push [ ]/[ ]/
[ ]/[ ] to fix the finish point, the desired alarm zone

will automatically form.

r MAN OVERBOARD [MOB]

Push to mark the man overboard point on the
screen. In the case of when a crew member falls
overboard, push [MOB] to display the MOB marker
( ) on the screen.

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

• Push and hold [MOB] for 0.5 sec. to cancel the function.

• Position and bearing data are necessary.

• External data is required for screen display information.

(p.38).

t RANGE UP/ DOWN SWITCH [+/ –] (p. 16)

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

y UP, DOWN, LEFT, RIGHT KEY

[UP][DOWN][RIGHT][LEFT]

Set the cross line cursor, alarm area, EPA target,
etc. according to the switch pushed.
Use the [ ]/[ ] key to select menu item and [

]/[ ]

key to set the item.
Using the [ ]-[ ]/[ ] or [ ]-[ ]/[ ] key combina­tion allows you to move the cross line cursor to the
upper (or lower) left or right.

u ADJUST MENU [ADJ] (p. 6)

Push [ADJ] to show the adjust menu on the display.

•Adjustable items; TUNE, GAIN, SEA, RAIN, IR, ES,

PULSE length.

!8

!1

!7

!5

!3

o

i

t

r

e

w

q

u

y

!0

!2

!4

!6

Control panel

3

2

PANEL DESCRIPTION

i TRANSMIT/SAVE SWITCH [TX (SAVE)] (p. 11)

Push to toggle between the TX mode and the

standby mode.
Push and hold for 0.5 sec. to turn the power save
function ON. The radar for TX interval scan is fixed
at 10 revolutions. (p. 14)

•Select the save time in FUNCTION menu.

o DISPLAY BRILLIANCE SWITCH [BRILL] (p. 6)

Push [BRILL] to turn the brilliance adjustment menu
ON or OFF.

•The brilliance and contrast of the symbol, character and

illumination can be adjusted in [BRILL.] and [CONTR.]
of the [BRILL] menu independently.

•Positive or Negative selection is available in [DISP.]

menu.

•Pushing and holding [BRILL] for 1 sec. to turn the con-

trast and brilliance to the default setting.

!0 HEADING LINE OFF FUNCTION [HL OFF] (p. 11)

Push [ADJ] and [MENU] simultaneously to turn off

all indication except the PPI (Plan Position Indica-

tor) screen, temporarily.

!1 MENU SWITCH [MENU] (pgs. 7–9)

Push [MENU] to toggle the FUNCTION and EPA
menu. Push [ ]/[ ] keys to select the items and
push [ ]/[ ] keys to change the setting.

•Enter the “INT. SETTING” from the “EPA” menu.

•Enter the “SERVICE MAN” menu from the “INT SET-

TING MENU”.

!2 ZOOM FUNCTION [ZOOM] (p. 13)

Push [MOB] and [TRAILS] simultaneously to toggle
the ZOOM function ON and OFF. ZOOM function
expands the target to 2 times normal.

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

•The screen zooms around the middle of the cursor and

own ship.

•This function is not available at

1

/8, 3/4 and 32 NMor

above ranges.

!3 TRAILS SWITCH [TRAILS] (p. 14)

Push to toggle the trail function ON and OFF. This is
useful for watching other ship’s tracks, approx. rela­tive speed etc.

•Trail Time can be set in FUNCTION menu.

!4 OFF CENTER FUNCTION [OFF CENT] (p. 12)

Push [ALM] and [MODE] simultaneously to turn
the OFF CENTER function ON or OFF.

•This function is not available at 32 NM or above ranges.

!5 MODE SWITCH [MODE]

Push to select one of Head-up (H UP), Course-up
(C UP), North-up (N UP) or True motion (TM)
screens.

•The North-up, Course-up and TM screens require ‘Ex­ternal data’ (p. 38).

•TM screen is not available at 32 NM or above ranges.

!6 PARALLEL INDEX LINE FUNCTION [PI]

Push [EBL1] and [EBL2] simultaneously to turn the
parallel index line ON.
Push [EBL1] or [EBL2] to turn the line OFF.

•Push [ ]/[ ] keys to rotate the lines, and push [ ]/[ ]
keys to adjust the line spaces.

!7 EBL2 (VRM2) SWITCH [EBL2 (VRM2)] (pgs. 16–18)

Push to display the Electronic Bearing Line 2
(EBL2) and the Variable Range Marker 2 (VRM2)
while EBL1 and VRM1 are displayed on the screen.

•Push [EBL2/VRM2] to toggle the center of VRM2 as fol­lows.

Own ship ➔ Intersection of the EBL1 and VRM1 ➔ OFF .

!8 EPASWITCH [EPA] (pgs.20–22)

Push to enter the EPA position data.
Push the [EPA] for 0.5 sec. to toggle the EPA dis­play and navigation display.

•Push [ ]/[ ]/[ ]/[ ] key to move the cross cursor on

the echo which you want to plot on the screen before
turning the function ON.

•Select “EPA” function ON in the “EPA” menu, set the ap-
propriate VECT, No. DISP, ALARM, CPA LIMIT and
TCPA LIMIT setting.

• External data is required for screen display information.

(p.38).

4

2

!9 TUNING LEVEL INDICATOR

Shows the receiver tuning level.

@0 SCREEN RANGE READOUT (p. 16)

Shows the maximum range of the displayed screen.

•The range indicated is nautical miles (NM).

@1 FIXED RING RANGE READOUT (p. 16)

Shows the interval range of the fixed ring.

•This readout appears when the “RING” of the FUNC­TION menu is turned ON.

@2 HEADING LINE (p. 11)

Heading line indicates the ships bow.

@3 ALARM ZONE (p. 19)

Shows the alarm zone.

•Appears when the alarm function is in use.

• External data is required for screen display information.

(p.38).

@4 OWN SHIP VECTOR INDICATOR

Shows the vector of your own ship.

@5 WAYPOINT MARKER (p. 15)

Shows the waypoint received from navigation
equipment.

•This marker appears when the “WPT” of the FUNCTION
menu is turned ON.

• External data is required for screen display information.

(p.38).

@6 EBL1/VRM1,EBL2/VRM2 READOUTS (pgs. 16-

18)
Shows the bearing of the displayed Electronic Bear­ing Lines (EBL) and the distance of the displayed
Variable Range Markers (VRM).

•Nautical miles (NM) and kilometres (KM) can be se­lected in the INT.SETTING menu as the distance unit.

@7 HEADING INDICATOR

Shows the heading bearing readout.

•The HDG readout indicates the bow of the ship’s bearing

in a clockwise direction from north.

• External data is required for screen display information.

(p.38).

@88 MODE INDICATOR

Head-up, Course-up (CUP), North-up (NUP) and
True Motion (TM) screens are available.

• External data is required for screen display information.

(p.38).

@9 CROSS LINE CURSOR

Used for measuring the bearing and distance, set­ting the alarm zone, selecting the EPA targets, etc.

• Push [ ]/[ ]/[ ]/[ ] several times to move the cur-

sor.

PANEL DESCRIPTION

■ Screen

S0672˚

EBL/VRM1

EBL/VRM2

R

R

S0162˚

3

(1)

NM

2530

˚

TM

T

1.296NM

O:01

O:01

0.566NM

@7

@8
@9

#0

#1

#2

#3

@2

@3

!9
@0

@1

@4

@5

@6

NOTE:

DATA display area may differ de­pending on DATADISP selection in
the FUNCTION menu.

2

PANEL DESCRIPTION

5

#0 EBL1/2 (pgs. 16-18)

Used for bearing measurement. When a target is
selected, the EBL readout #6 shows the bearing.

#1 VRM1/2 (pgs. 16-18)

Used for distance measurement. When a target is
selected, the VRM2 readout @8 shows the distance.

#2 MOB SYMBOL

Push [MOB] to mark the [MOB] marker on the
screen.

• External data is required for screen display information.
(p.38).

#3 FIXED RANGE RINGS (p. 16)

Shows the distance in fixed intervals.

•These rings appear when the “RING” of the FUNCTION

is turned ON.

‘ DATA DISPLAY

Data readout may differ depending on “DATA DISP”
setting of the function menu.

•When “OFF” is selected;

#4 ALARM INDICATOR (p. 19)

Appears when the alarm function is in use.

#5 TRAILS INDICATOR (p. 14)

Shows the trail time.

•Echo remains with gradation during the trail time period

on the screen. (Except for the trail time; ∞)

•Progressing time counter starts to count the time until

the timer reaches the trail time.

#6 VECTOR INDICATOR (pgs. 20-22)

Shows the EPA and OWN vector type.

•Tv: True vector

• Rv: Relative vector

• External data is required for screen display information.

(p.38).

#7 SHIP SPEED READOUT (p. 15)

Shows the ship speed.

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

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

• External data is required for screen display information.

(p.38).

•When “CURS” or “SHIP” is selected;

#8 POSITION/CURSOR READOUT (p. 15)

Shows your own ship or cursor latitude and longi­tude readout when external NMEA data with 0183
format is connected.

•Select ‘CURS’ or ‘SHIP’ in the FUNCTION menu.

• External data is required for screen display information.

(p.38).

•When “WPT” is selected;

#9 WAYPOINT READOUTS (p. 15)

Shows the bearing and distance to the waypoint re­ceived from navigation equipment.

•This readout appears when the “WPT” of the FUNC­TION menu is selected.

• External data is required for screen display information.

(p.38).

$0 TIME INDICATOR

Shows the estimated time to the waypoint with cur­rent speed.

• External data is required for screen display information.

(p.38).

‘ MOB

$1 MOB READOUTS

Shows the bearing and distance to the MOB (Man
Over Board) event marker.

•Push and hold [MOB] for 0.5 sec. to cancel the readout

and the symbol.

•When [MOB] function is activated, [MOB] readout is prior

to displayed except [EBL/VRM] readouts.

• External data is required for screen display information.

(p.38).

POSN

34º38637N

SOG

Tv

135

º33.209E

WPT

34˚42.000N

SOG

Tv

135˚29.000E

MOB

R

3087˚

SOG

Tv

O:04

4.365NM

SOG

Tv

AL
TR

0’08

#4
#5

#6
#7

17.7KT

CURS

R

0398º

SOG

Tv

O:09

2.068NM

(CURS readout)

(SHIP readout)

NOTE:

When L/L DISP function in the [FUNCTION] menu is
turned ON, [CURS], [WPT] and [MOB] readouts will
be displayed as Latitude/Longitude.
When L/L DISP function in the [FUNCTION] menu is
turned OFF, [CURS], [WPT] and [MOB] readouts will
be displayed as bearing and distance.

3

6

MENU

Push [BRILL] to turn the [BRILL] menu ON or OFF.

■BRILL. (Brilliance)

• Push [ ]/[ ] to select [BRILL.], then push [ ]/[ ] to
change the setting.

■CONTR. (Contrast)

• Push [ ]/[ ] to select [CONTR.], then push [ ]/[ ] to
change the setting.

■DISP. (Display type)

• Push [ ]/[ ] to select [DISP.], then push [ ]/[ ] to se-
lect the “Positive display” or “Negative display”.

NOTE:

Pushing and holding [BRILL] for 1 sec, returns the brilliance
and contrast setting to the default setting.

BRILL. CONTR. DISP.

POSI

NEGA

■ BRILL MENU ■ ADJ(Adjust menu)

TUNE GAIN SEA RAIN IR ES PULSE

ON

ON LP

OFF

OFF SP

A
U
T
O

A
U
T
O

Push [ADJ] to turn the ADJ. menu ON or OFF.

• Push [ ]/[ ] to select the item and push [UP] or [DOWN]
to change the setting.

[TUNE], [GAIN], [SEA] control

•While selecting each item, push and hold [ADJ] for

0.5 sec. to turn the “AUTO function” ON and OFF.

■TUNE

•

“AUTO.TUNE” appears for approx. 5 sec. instead of the

screen display, when first transmitting after turning the
power on. The unit also re-tunes in some cases.

•When activating the manual tuning slider, push [ ]/[

]

to adjust desired tuning level.

■ GAIN CONTROL [GAIN] (p. 11)

Adjusts the receiver amplifier gain.

•Increased gain may increase screen noise.

■SEA CLUTTER CONTROL [SEA] (p. 12)

• This function serves to eliminate echoes from the

waves at close range.

•Reduces the receiver gain for close objects within a

radius of 8 miles to eliminate sea clutter.

•Under normal conditions set the SEA to a minimum or
AUTO.

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

■RAIN CLUTTER CONTROL [RAIN] (p. 12)
This function eliminates reflection echoes from rain,
snow, fog, etc.

■IR (p. 13)

•OFF : Turn the Interference Reduction function OFF.

•ON : Turn the Interference Reduction function ON.

■ECHO STRETCH [ES] (p. 13)

•OFF : Turn the echo stretch function OFF.

•ON : Turn the echo stretch function ON.

■PULSE

•LP:Select the long pulse. LPindicator appears on the

screen.

•SP:Select the short pulse.

3

MENU

7

Push [MENU] to turn the [FUNCTION] menu ON.

• Push [ ]/[ ] to select the item and push [ ]/[ ] to
change the setting.

■RING

•OFF : Turn the fixed range ring display OFF.

•ON : Turn the fixed range ring display ON.

■D.RANGE

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

•NAR. : Narrow dynamic range. Even weak reflec-

tions are displayed as strong reflections.

•MID. : Mid dynamic range.

•WIDE : Wide dynamic range. You can distinguish

between weak reflections and strong reflec-
tions easily. It’s easy to overlook a quiet
weak reflection.

■ZONE ALARM

•IN : Alarm is emitted when the target comes into

the zone.

•OUT : Alarm is emitted when the target goes out of

the zone.

■EBL/PI (except HDG and CSE) (p. 17)

•TRUE* : True or magnetic direction.

•360°R : Relative direction

•PT/SB : Bow direction

■DATA DISP* (See left)

•OFF : No information displays on the screen.

•CURS : Display the cursor position.

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

•WPT : Display the Way Point.

■L/L DISP* (See bottom left)

•OFF :Display the bearing, distance and time on the

screen.

•ON :Display the Latitude and Longitude on the

screen. [CURS], [WPT] AND [MOB]

■WPT*

•OFF : For not displaying the way point mark on the

screen.

•ON :To display the way point mark on the screen.

■OWN VECT*

•OFF :For not displaying the own ship vector.

•ON :To display your own ship’s vector.

■TRAIL TIME

•15S, 30S, 1M, 3M, 6M, 15M, 30M or ∞ :

Select the plot interval and vector time.

■SAVE TIME

•1M, 6M, 15M or 30M : Select the stand by time dur-

ing save mode.

* The radar for TX interval scan is fixed at 10 revolutions.

RING

D.RANGE
ZONE ALARM
EBL/PI
DATA DISP
L/L DISP
WPT
OWN VECT
TRAIL TIME
SAVE TIME

FUNCTION

OFF ON

NAR. MID. WIDE

IN OUT

TRUE 360

R

PT/SB
OFF CURS SHIP WPT
OFF ON
OFF ON
OFF ON

6MIN
15MIN

■ FUNCTION MENU

CURS

R

0398º

O:09

2.068NM

POSN

34º38637N

135

º33.209E

WPT

R

002.8˚

O:14

5.628NM

WPT

R

002.8˚

O:14

5.628NM

•DATA DISPLAY: CURS (Cursor)

•DATA DISPLAY: SHIP (Position)

•DATA DISPLAY: WPT (Way Point)

•L/L DISP OFF

WPT

34˚42.000N

SOG

135˚29.000E

•L/L DISP ON

AL

TR

0’08

TRAIL indicator

Trail interval

•DATA DISPLAY: OFF

Sample;

*NOTE: External data is required for screen display infor-

mation. (p.38).

8

3

MENU

Push [MENU] several times to turn the [EPA] menu ON
or OFF.

• Push [ ]/[ ] to select the item and push [ ]/[ ] to
change the setting.

■EPA

•OFF :Turn the EPA function OFF.

•ON :Turn the EPAfunction ON.

■VECT

•TRUE :Select the true vector mode.

•REL :Select the relative vector mode.

■No.DISP

•OFF :For not displaying any mark number.

•Sel :Display the selected mark number only.

•ALL :Display all mark numbers.

■ALARM (CPA/TCPA)

•OFF :Turn the alarm function OFF.

•ON :Turn the alarm function ON.

■CPA* LIMIT

•0.1 to 50.0 NM : Set the CPA (Closest Point of Ap-

proach) limit with [ ]/[ ]keys.

■TCPA* LIMIT

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

with [ ]/[ ] keys.

*CP A/TCPA: Closest Point of Approach and Time to Clos-

est Point of Approach limit is defined by the observer to
give a warning when a target or targets are close to
within those limits from your own ship.

■ INT. SETTING

•Push [ ] to open the INT. SETTING menu. (see

right)

EPA

VECT
No.DISP
ALARM
CPA LIMIT
TCPA LIMIT

INT.SETTING

EPA MENU

OFF ON
TRUE REL

OFF SEL ALL

OFF ON

1.0NM
10MIN

■ EPA(Electronic Plotting Aid)

*NOTE: External data is required for screen display infor-

mation. (p.38).

9

3

MENU

Push [MENU] several times to turn the EPA menu ON.

• Push [ ] to select the [INT.SETTING] and push [ ] to
open the [INT.SETTING] menu.

■BEEP

•OFF :Turn the beep tone OFF*.

•ON :Turn the beep tone ON.

* Except alarm function.

■DIST UNIT

•NM :Display the distance unit as NM.

•KM :Display the distance unit as KM.

■BRG

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

•TRUE :Select the true bearing.

•MAG :Select the magnetic bearing.

■MAG VAR

•AUTO* :Revise magnetic variation automatically.

*NOTE: NMEAdata is required. NEVER select
“AUTO” without NMEAdata, incorrect variation
data may entered. (p. 38)

•MANUAL :Revise magnetic variation manually.

•Push [ ]

to select [MANUAL],then push

[ ]

. Set the revised value with

[ ]/[ ]

.

Push

[ ]

or [MENU] key to abort the

menu.

■BRG INPUT

•NMEA :NMEA0183 bearing data format.

•N+1 :N+1 data format.

•AUX :Other format.

■SPD INPUT

•GPS :Use the GPS NMEA speed data.

•LOG :Use the speed sensor data.

■TX INH START

•0 to 359° :Push [ ]/[ ] key to enter the start point

of the TX inhibit area.

■TX INH ANGLE

•0 to 90° :Push

[ ]/[ ] key to enter the TX inhibit

area.

■ SERVICE MAN

•Push [ ] to open the SERVICE MAN menu.

NOTE: This menu exists for service or maintenance

purposes only.

BEEP

DIST UNIT
BRG
MAG VER

BRG INPUT
SPD INPUT
TX INH START
TX INH ANGLE
SERVICE MAN

INT.SETTING

OFF ON

NM KM WI
TRUE MAG
AUTO MANU.

!! 0.0 E

NMEA

N+1 AUX

GPS LOGOF

0
0

■ INT. SETTING

4

10

BASIC OPERATION

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

•Checklist

q The 4 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 p. 26 for details.)

■ Checking the installation

■ Turning power ON/OFF

q Push [POWER] to turn the power ON.

•The initial screen appears and warming up time is
counted down on the screen.

•The magnetron inside the scanner unit warms up for 90
sec.

•The firmware’s revision number appears.

•[POWER] does not function for 2 sec. 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 Po-

sition Indicator (PPI) screen.

•Targets and heading marker appear.

•The screen appears approx. 5 sec. after turning the

power on, when ‘AUTO’is selected in the “TUNE” of the
FUNCTION menu.

r Push [POWER] to turn the power OFF.

NOTE:

Push [BRILL] for 1 sec. to turn the [BRILL] setting to
default, when the “Brilliance” or “Contrast” was miss
adjusted.

0672˚

WPT

POSN

R

34°37.003N 135°33.986E

8

NM

STANDBY

HDG 301.6°

COG 298.6°

SOG 17.2KT

1:29

REV 1.0

ROM OK

RAM OK

NUP

T

T

5.842NM

O:17

MOB

0672˚

WPT

POSN

R

8

NM

STANDBY

HDG

323.4°

5.842NM

O:15

MOB

34°37.003N 135°33.986E

COG

323.4°

SOG

28.6KT

CAUTION: Connect the scanner unit before

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

➨

Firmware
revision
number.

11

4

BASIC OPERATION

• Heading Line 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.

•Push and hold [ADJ] and [MENU] simultaneously to hide
the heading marker.

q Turn the power ON.
w Push [TX] after the countdown disappears from the

screen.

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

e Push [+] or [–] key one or more times to select the

display range.

•The screen range readout shows the maximum range of
the screen.

r Push [ADJ] then adjust the [GAIN]* to be on the

threshold of max. screen range.

•Increases the gain.

•Increased gain may increase screen noise.

t Select [SEA]*, then set the [SEA]* to minimum.
y Push [MODE] to select one of HUP (Head-up), CUP

(Course-up), NUP (North-up) or True motion TM
screens.
C UP, N UP or TM can be selected only when bear­ing, position or speed data are connected.
(See p. 26 for details)

*Select each item ,then push [ADJ] for 0.5 sec. to

use auto setting mode.

■ Basic operation

y

w

e

q

r

• 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 backlight.

• Key illumination

The backlighting of the keys can be adjusted for con­venient operation. (p. 6)

•Key illumination corresponds with [BRILL] control.

NOTE: High intensity will shorten the life of the back
light.

• Fixed range rings
The fixed range rings can be used for rough distance

measurement. (p. 14)
Push [MENU] to open the FUNCTION menu, then
push [ ] to select RING. Push [ ] to turn the ring ON.

CAUTION: When setting the [SEA] control to MAX posi-

tion, close targets are blanked.

12

4

BASIC OPERATION

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

■ SEA function

This function serves to eliminate echoes from waves
at close range. Reduce the receiver gain for close ob­jects within a radius of 8 miles to eliminate sea clutter.

•Push and hold [ADJ] for 0.5 sec. to activate the automatic
control function.

■ RAIN function

This function eliminates reflection echoes from rain,
snow, fog etc.

•Adjust the lowest level to deactivate the control function.

•NOTE: DO NOT reduce the reflection echoes too much,

otherwise you may miss weaker targets.

WARNING: The [SEA] control reduces the re-

ceiver sensitivity of objects within 8 miles. 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 the rain or the island within
1 NM while automatic SEA function is activating.

■ OFF CENTER function

The scanning area can be shifted in a desired direc­tion and can be enlarged partially . This is useful when
the Head-up* 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 available within, and up to a 24 NM range.

*This function is not available in the TM screen.

q Push [ ]/[ ]/[ ]/[ ] key to move the cursor

where you want to shift the center of the screen.

• Max. offsetting is up to 56% of the screen.

w Push [ALM] and [MODE] simultaneously to shift

the screen.

e Push [ALM] and [MODE] simultaneously again to

return to the normal screen.

With OFF CENTER on

Normal screen

Small echos

Adjust RAIN control

Echos from sea waves

Adjust SEA control

13

4

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. 6)

q Push [ADJ] to call up “ADJUST” menu.
w Push [ ]/[ ] until the “IR” section becomes high -

lighted.

e Push [ ]/[ ] to select IR function ON or OFF.

With IR function on

Radar interference

■ ECHO STRETCH function

The blips can be magnified electronically for easier
viewing of small targets. (p. 6)

q Push [ADJ] to open the ADJUST menu.
w Push [ ]/[ ]

to select “STRETCH”. Push

[ ]/[ ]

to turn the function ON or OFF.

■ ZOOM function

The ZOOM function expands the target to two times
normal size.

•This function is available within, and up to a 24 NM range.
(except for

1

/8 and 3/4 NM.)

q Push [ ]/[ ]/[ ]/[ ] to move the cursor to the de-

sired target.

w Push [MOB] and [TRAILS] simultaneously to toggle

the “ZOOM” function ON and OFF.

With STRETCH on

Normal screen

With ZOOM function on

Normal screen

NOTE: Turn OFF this function during normal opera-

tion.

14

4

BASIC OPERATION

■ TRAILS function

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

•Setting the trail interval time

q Push [MENU] to call up the FUNCTION menu.

•Push [ ] several times until the “TRAIL TIME” section
becomes highlighted.

w Push [ ]/[ ]

to select trail interval time.

•15 sec., 30 sec., 1 min., 3 min., 6 min., 15 min., 30 min.
and

∞ (continuous) are available.

e Push [MENU] several times to exit the menu.

• Using the TRAILS function

q Push [TRAILS] to turn the trail function ON.

•“TRAILS” and trail interval time appears in the lower left
of the screen.

w All displayed echoes at the plotted time are memo-

rized and displayed with a gradually fading inten­sity together with the current echoes.

•Echos 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.

Trail time

AL

TR

0’08

TRAIL indicator

Trail interval
counter

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

• Setting the scanning standby time

q Push [MENU] to call up the “FUNCTION” menu.
w Push [DOWN] until the “SAVE TIME” section be-

comes highlighted.

e Push [ ]/[ ]

to select standby time.

•1, 6, 15, and 30 min. are available.

r Push [MENU] twice to exit the menu display.

• Using the “POWER SAVE” function
q Push and hold [TX (SAVE)] for 0.5 sec. to turn the

power save function ON.

•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” appears in the top of the screen.

e After the selected standby time elapses, transmis-

sion and rotation restart.

r Push [TX (SAVE)] to cancel the power save func-

tion.

•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 zone, therefore, more power saving is possi­ble. (p. 00)

Scan and standby alternates.

2530

˚

O:01

O:01

T

TM

3

(1)

EBL/VRM1

EBL/VRM2

2530

˚

T

3

NM

S0672˚

S0162˚

SAVE

1.296NM

R

0.566NM

R

O:01

O:01

TM

(1)

EBL/VRM1

EBL/VRM2

NM

S0672˚

S0162˚

SAVE

1.296NM

R

0.566NM

R

15

4

BASIC OPERATION

When waypoint data received from navigation equip­ment with NMEA 0183 format is applied, the radar can
display the waypoint. To display the waypoint marker,
bearing data is necessary. (p. 38)

q Push [MENU] twice to call up the “FUNCTION”

menu.

w Push [ ] until the “DATA DISP” section becomes

highlighted.

e Push [ ]/[ ] to select WPT (Waypoint).
r Push [MENU] twice to exit the menu display.

■ Waypoint indication

■ Ship speed indication

When the ship speed data with NMEA 0183 format is
applied, the radar can display the ship speed. Knots
(KT) or kilometres/hour (KM/h) are automatically se­lected in the normal screen (p. 00) by selecting nauti­cal miles (NM) or kilometres (KM) respectively.

q Push [MENU] to call up the [INT.SETTING] menu.
w Push [DOWN] until “DIST UNIT” section becomes

highlighted.

e Push

[ ]/[ ] to turn the ship speed indication to

NM or KM.

r Push [MENU] to exit the menu display.

■ Position indication

When latitude/longitude data with 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. 38)

q Push [MENU] twice to call up the “FUNCTION”

menu.

w Push [ ]

until “DATADISP” section becomes high-

lighted.

e Push

[ ]/[ ]

to select SHIP (ship position) or

CURS (cursor position).

r Push [MENU] several times to exit the menu.

To magnify the blips for easier viewing of small targets,
the long pulse and echo stretch (p. 11) functions are
available. When the long pulse is used in the 3/4 to 2
NM range, this function magnifies target echoes to the
backward direction of the target.

•Pulse selection

q Push [ADJ] to call up the Adjust menu. (p. 6)
w Push [ ]/[ ]

until the “PULSE” section becomes

highlighted.

e Push

[ ]/[ ] to select the long pulse.

r Push [ADJ] to exit the menu.

■ Long pulse function

NOTE: Turn ON the SP (Short Pulse) function dur-

ing normal operation. This function reduces the tar­get distance resolution. (p. 6).

■ Bearing setting

The radar bearing interface accepts NMEA, N+1 or
AUX data format and the bearing can be used as 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.

• Setting the bearing type

q Push [MENU] twice to call up “EPA” menu.
w Push [ ] several times and push [ ] to call up the

[INT. SETTING] menu.

e Push [ ] until the “BRG” section becomes high-

lighted.

r Push [ ]/[ ] to select magnetic or true north type.

•All displayed bearing readouts show the selected bear­ing type.

• Setting the magnetic variation
q Push [ ]

until the “MAG VAR” section becomes

highlighted.

w Push

[ ]/[ ] to select an “AUTO*” or “MANU.” vari-

ation.

e When a “MANU.” variation is selected, push

[DOWN], then push [ ]/[ ] to set the bearing vari-
ation.

r Push [MENU] to exit the menu display or push [ ]

once to proceed to the bearing input setting.

*NOTE: NMEA data is required for auto variation. NEVER
select “AUTO” variation without NMEA data. Incorrect varia­tion data may entered. (p. 38)

DISTANCE AND DIRECTION MEASUREMENTS

5

16

■ Distance measurement

Two measurement procedures are available with this
radar. Operating them separately or jointly is possible.

The distance unit, nautical miles (NM) or kilometres
(KM) is selected in the “INIT.SETTING” menu (p. 9).

• Using the fixed rings

q Push [MENU] to call up the “FUNCTION” menu.
w The “RING” section becomes highlighted.
e Push [ ] to select “RING” function ON then display

the fixed ring.

•The interval range appears on the right of the screen

range readout.

•The ring range is fixed depending on the screen range.
(See below.)

r Push [MENU] several times to exit the menu.
t To clear the fixed rings, push [ ]

to select OFF in

step e above.

• Using the variable range marker

q Push [ ]/[ ]/[ ]/[ ] several times to move the

cross line cursor on the target.

w Push [EBL1 (VRM1)] to display EBL1 and VRM1.
w Push [EBL1 (VRM1)] again to cancel EBL1 and

VRM1.

S0672˚

EBL/VRM1

EBL/VRM2

R

R

S0162˚

3

(1)

NM

2530

˚

Fixed Ring

Ring range
readout

T

1.296NM

O:01

O:01

0.566NM

TYPE DESCRIPTION

RING

Displays fixed rings.
Suitable for rough estimations from your

own ship to any target.

VRM1

Displays a variable range marker.Suit­able for accurate measurements from
your own ship to a target.

When the VRM1 and EBL1 selects a tar­get, the center of VRM2 appears at the
intersection point.
Suitable for accurate measurements
from target to target.

NOTE: When the screen
is shifted, the number of
rings may differ.

S0672˚

EBL/VRM1

EBL/VRM2

R

R

S0162˚

3

(1)

NM

2530

˚

T

1.296NM

O:01

O:01

0.566NM

VRM2

Range(nm) 1/81/41/23/4 1 1.5 2 3 4 6 8 12 16 24 32 36
Ring (nm)1/161/81/81/41/41/21/2 1122448812
Number 2 2 4 3 4 3 4 3 4 3 4 3 4 3 4 3

DISTANCE AND DIRECTION MEASUREMENTS

17

5

■ Bearing and Distance measurement

This radar has 2 Electronic Bearing Lines (EBL) to indicate the target direction from your ship or a target.

• Using the EBL and VRM–1

• Using the EBL and VRM–2

• Using the variable range marker

q Push [ ]/[ ]/[ ]/[ ] several times to move the

cross line cursor on the target.

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

VRM1.

•The EBL1 and VRM1 readouts indicate the target bear­ing and distance.

•The EBL readouts indicate the target bearing;

0 to 360°R: Relative direction, when ‘360°R’ is selected

in the EBL/PI of the “FUNCTION” menu.
(see p. 7)

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

in the EBL/PI of the “FUNCTION” menu.
(see p. 7)

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

‘TRUE’ in the EBL/PI of the “FUNCTION”
menu. (see p. 7)

* Bearing data is required. (p. 38)

e Push [ ]/[ ]/[ ]/[ ] several times to move the

cross line cursor on the another target.

r Push [EBL2 (VRM2)] to display the EBL2 and

VRM2.

•The EBL2 and VRM2 readouts indicate the target bear­ing and distance.

t Push [EBL2 (VRM2)] once more to display the

EBL2 and VRM2 from the intersection point of the

VRM1 and EBL1

.

•When the [EBL2 (VRM2)] is pushed again, the center of
VRM2 appears at the intersection point of the EBL1 and
VRM1.

y Push [EBL2 (VRM2)] to clear the EBL2 and VRM2

indication.

•Push [EBL1 (VRM1)] to clear EBL2/VRM2 and
EBL1/VRM1 at the same time.

u Push [EBL1 (VRM1)] to clear EBL1 and VRM1.

NOTE: EBL2 and VRM2 will not be displayed on the screen
when VRM2 readout exceeds 20 times as long as the screen
range.

•The EBL2 and VRM2 readouts indicate remain on the
screen.

S0672˚

EBL/VRM1

EBL/VRM2

R

R

S0162˚

3

(1)

NM

2530

˚

EBL1

VRM1

VRM2

EBL2

T

1.296NM

O:01

O:01

0.566NM

S0672˚

EBL/VRM1

EBL/VRM2

R

R

S0162˚

EBL1

3

(1)

NM

2530

˚

VRM1

VRM2

EBL2

T

1.296NM

O:01

O:01

0.566NM

DISTANCE AND DIRECTION MEASUREMENTS

18

5

■ Advanced measurements

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

• Measuring the distance and direction between 2

targets

q Push [ ]/[ ]/[ ]/[ ] to move the cross line cursor

on the desired target.

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

VRM1.

e Push [ ]/[ ]/[ ]/[ ]

to move the cross line cursor

on the next target.

r Push [EBL2 (VRM2)] to display the EBL2 and

VRM2.

t Push [EBL2 (VRM2)] once more to display the

EBL2 and VRM2.

•The intersection of the EBL1 and VRM1 becomes the
center of the EBL2 and VRM2.

y The VRM2 readout shows the distance between the

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

• Measuring the relative speed and course of a

target

q Push [TRAILS] (p. 12) ON; then wait until the trail

time count up reaches to the TRAILTIME.

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 as above.

r The VRM2 readout is a measurement of target

movement which can be converted into relative tar­get speed.

•For example, when a 6 min. 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 kilometres/hour
when the selected unit in the “FUNCTION” menu is
nautical miles (NM) or kilometres (KM), respectively.

t The EBL2 readout shows the course direction of

the target.

S0672˚

EBL/VRM1

EBL/VRM2

R

R

S0162˚

EBL1

3

(1)

NM

2530

˚

VRM1

VRM2

EBL2

T

1.296NM

O:01

O:01

0.566NM

S0672˚

EBL/VRM1

EBL/VRM2

R

R

S0162˚

EBL1

3

(1)

NM

2530

˚

VRM1

VRM2

EBL2

T

1.296NM

O:01

O:01

0.566NM

ALARM FUNCTION

6

19

• Setting and using the alarm function

q Push [+]/[–] to select the desired range.
w Push [ ]/[ ]/[ ]/[ ] to set the cursor to the start-

ing point of the alarm zone.

e Push and hold [ALM] for 0.5 sec. to enter the alarm

zone setting.

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

r Push [ ]/[ ] to adjust an angle and push [ ]/[ ]

to set the distance of the alarm zone.

•The selected alarm zone appears.

t Push [ALM] to fix the alarm zone and activate the

alarm function.

•“AL

” 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 beep is emitted.

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

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

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

i To activate the alarm function again with the same

programmed zone, push [ALM].

•“AL” and pre-programmed alarm zone appears.

• Using the function with power saver

To activate the power save function, push and hold [TX
(SAVE)] for 0.5 sec. while the alarm function is turned
ON.

•The LCD display turns OFF.

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

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

The unit has an alarm function to protect your ship from collisions. If other ships or islands, etc. come into the pre­programmed 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 the LCD OFF until an alarm is
given, to conserve power.

■ Zone alarm setting

Zone alarm beep is emitted when the target comes
into the zone, or the target goes out of the zone.

q Push [MENU] to call up the FUNCTION menu.
w Push [ ]

until the “ZONE ALARM” section be-

comes highlighted.

e Push

[ ]/[ ] 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.

■ Alarm zone setting

S0672˚

EBL/VRM1

EBL/VRM2

R

R

S0162˚

3

(1)

NM

2530

˚

T

1.296NM

O:01

O:01

0.566NM

S0672˚

EBL/VRM1

EBL/VRM2

R

R

S0162˚

AL

3

(1)

NM

2530

˚

T

1.296NM

O:01

O:01

0.566NM

Push

[

]/[ ]/[ ]/[ ]

➨

“AL”

appears

Fig. 1

Fig. 2

Alarm sounds when the target
comes into the zone.

Alarm zone

Target (other ship, etc.)

Fig. 3

7

20

EPA (Electronic Plotting Aid)

■ EPA (Electronic Plotting Aid)

The EPA (Electronic Plotting Aid) for manual plotting is interfaced for small ships fitted with a gyrocompass, speed
and distance measuring equipment.
EP A(Electronic Plotting Aid), will in order to improve the standard of collision avoidance at sea, reduce the workload
of the crew by enabling them to obtain information about plotted targets, as well as they could by manually plotting
a single target themselves.

•Max. 10 targets can be plotted on the screen.

•Plot positions shall be identified by an approved symbol mark (p. 22) and associated plot number.

•The vector origin will move across the screen at a rate and direction defined by the calculated true or relative

course and speed.

•The vector will be displayed on the target.

• External data is required for screen display information. (p.38).

■EPA menu setting

Set the EPA menu items before using the EPA func­tion.

q Push [MENU] several times to turn the EPA menu

ON.

w Push [LEFT] to turn the EPAfunction ON
e Push [ ] to select “VECT”; push

[ ]/[ ] to 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.

r Push [DOWN] to select “No. DISP” to select the tar-

get identification number type which appears at the
right side of the mark. Push [ ]/[ ]to select the ap-

propriate type.

•OFF: No number appears.

•SEL: Number appears by the selected mark only.

•ALL: All numbers appear by the marks.

t Push [DOWN] to select “ALARM”; push [ ]/[ ] to

turn the alarm function ON or OFF.

•EPAalarm is emitted when both CPAand TCPA reaches
the limit.

y Push [ ]

to select the “CPA* LIMIT”; push

[ ]/[ ]

to set the CPA limit distance.

u Push [ ]

to select the “TCPA* LIMIT”, push

[ ]/[ ]

to set the TCPA limit time.

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

Closest Point of Approach limit is defined by the ob­server to a given warning when a target or targets are
close to within those limits from your own ship.

i Push [MENU] to exit the EPAmenu.

EPA

VECT
No.DISP
ALARM
CPA LIMIT
TCPA LIMIT

INT.SETTING

EPA MENU

OFF ON
TRUE REL

OFF SEL ALL

OFF ON

1.0NM
10MIN

21

7

EPA

■EPA operation

Select the target which you want to plot on the display .
q Push [ ]/[ ]/[ ]/[ ] to move the cursor on the de-

sired target.

w Push [EPA] to display the EPAinformation screen.

•“SET” menu appears below the screen

• “SET” becomes highlighted.

e Push [EPA] to select the target for plotting.

•Dotted square symbol appears on the cursor.

•Target identification number, bearing and distance read-

out appears in the information screen.

•Timer starts to count the progressing time.

r Push [ ]/[ ]/[ ]/[ ] to move the cursor on the de-

sired target.

t Push [EPA] to display the “SET” menu, after the

progressing time of 30 sec. has passed.

y Push [ ]/[ ] to select the appropriate target num-

ber.

• “SET” becomes highlighted.

u Push [EPA] to register the target.

•Target course (CSE) and speed (SPD) appears on the
data screen.

•CPAand TCP Aof the target appears on the data screen.

• The vector appears on the target.

i Push [EPA] for 0.5 sec. to exit the EPA menu.

•Target vector remains on the screen.

• The warning information blinks at the center of the dis-

play , and a warning beep is emitted when the plot is not
updated for 10 min.

•The plot will be cleared if the time between consecutive
plots exceeds 15 min.

•Automatically applied ‘target identity numbers’ can not
be re-used until the maximum number of plotted targets
has been used first.

No.1

BRG 337.3

°

0’45

CSE 248.5

°

CPA 2.004 NM

DIST 2.041NM
SPD 18.6KT
TCPA 4’25

Bearing

Distance

Course

Speed

Identification No.

Closest Point of
Approach

Time to Closest
Point of Approach

Vector time

R

T

ALL CLR

CORR

Set menu:

CLR

No.1

BRG 337.3

°

0’45

CSE

CPA

DIST 2.041NM

SPD

TCPA

R

■ Correct the target

•Correct the uncalculated target

You can correct the uncalculated target by pushing the
[EPA] until the progressing time reaches 30 sec.

q Push [ ]/[ ]/[ ]/[ ] to move the cursor on the

proper target.

w Push [EPA] to display the EPAinformation screen.
e Push [ ]/[ ] to select the desired target number.

• “CORR” becomes highlighted.

r Push [EPA] to correct the target position.

•Progressing counter restarts again.

•Push [ ] to select “CLR” to clear the current mark.

•Push [ ] twice to select “ALL CLR” to clear all marks.

t Push and hold [EPA] for 0.5 sec. to exit the EPA

menu.

•Reset the calculated target

When the target turns, reduces speed, increases
speed or stops after calculating, the vector will not
shows the actual predicted position. In such case you
must reset the vector and position of the target, other­wise the EPA alert may not function properly.

q Push [ ]/[ ]/[ ]/[ ] to move the cursor on the

proper target.

w Push [EPA] to display the EPAinformation screen.
e Push [ ]/[ ] to select the desired target number.

• “SET” becomes highlighted.

r Push [EPA] to correct the target vector and position.

•Progressing counter restarts again.

•Push [ ] to select “CLR” to clear the current mark.

•Push [ ] twice to select “ALL CLR” to clear all marks.

t Push and hold [EPA] for 0.5 sec. to exit the EPA

menu.

30sec.

30 sec. 30 sec.

Calculating start

Set the vector

*Correctable zone

Reset the vector

Vector appears

*

*

*

EPA

22

7

■ Course and speed vector

The vector indicates the target’s predicted, true or rel­ative course and speed.

•Vector time may change depending on the TRAIL TIME
setting. (see FUNCTION menu, p. 7)

•The tip of the vector shows the target’s predicted position
after a certain time, which has been selected in the “TRAIL
TIME”.

Vector

Current position

Vector time

Target's predicted
positon

■ Plots

Plot displays past position of targets every 1 min. as 4
dots.

q Target goes straight.
w Target turns right.
e Target reduces speed
r Target increases speed.

q

wer

■ Plotting marks

There are 5 kinds of plotting marks.

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

close to within a minimum range and
time.

: Alarm emit indicator. Push [EPA] to can-

cel the alarm.

■ Clear the target

You can clear the unnecessary target vector.

q Push [EPA] to display the EPAinformation screen.
w Push [ ]/[ ] to select the desired target number.

e Push [ ] to select “CLR” to clear the current mark.

•Push [ ] twice to select “ALL CLR” to clear all marks.

r Push and hold [EPA] for 0.5 sec. to exit the EPA

menu.

NOTE: Automatically applied ‘target identity numbers’

cannot be re-used until the maximum number
of plotted targets has been used first.

Select the target Number

Select ‘CLR’ or ‘ALL CLR’:

ALL CLR

CORR

Set menu:

CLR

No.1

BRG 337.3

°

CSE 248.5

°

CPA 2.004 NM

DIST 2.041NM

SPD 18.6KT

TCPA 4’25

R

T

8

23

BASIC RADAR THEORY

Radiation can escape on each side of the beam inside
the lobes. If a target reflects this radiation, it will be dis­played on the screen as an echo.

Side-lobe echoes usually occur at short ranges and as
a result of large (strongly reflective) targets. They can
be reduced with proper adjustment of the [SEA] con­trol. See p.10 for the [SEA] control.

Indirect echoes may be returned from either a passing
ship, or returned from a reflecting surface, such as a
mast on your own ship.

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

Radar uses a form of electromagnetic radiation, which
like light, can be reflected. 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
tank is in proximity. Operators should be familiar with
the effects of these phenomena. In some cases,
echoes can be reduced.

■ Side-lobe echoes

■ Indirect echoes

Main beam

Side lobes
False
echoes

True
echo

Target

Scanner

Mast or
similar obstruction

True echo

False echo

Indirect
echo

True
echo

Own ship

Target

Bridge

An echo is reflected at this point.

BASIC RADAR THEORY

24

8

■ Multiple echoes

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

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 p. 10 for the [SEA] control.

■ 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.

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

Own ship

Another ship

True echo

False echoes

This target cannot be recognized with radar.

The target in this area cannot be recognized.

Pulse length

Pulse starting point

Vertical beam width

BASIC RADAR THEORY

25

8

■ Blind and Shadow sectors

Blind or Shadow sectors may exist because of ob­structions such as masts, derricks or stacks. 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.

When tall and massive targets such as a large island
are located at close range is 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.

■ 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.

• 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.

• 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.

Mast or
similar
obstruction

Own ship

Large

Small

Transmit
pulse

Echoes

Target 1

Target 2

Transmit
pulse

Echo

Target 1,2

Target 1

Antenna

Target 2

Antenna

Target 1

Target 2

Target 2

Target 1

Target 2

Target 1

Target 1,2

Target 1, 2

Shadow sector

Blind sector

9

26

INSTALLA TION AND CONNECTIONS

q DATA output (+)

w DATA output (–)

e NMEA 2 input (+)*

r NMEA 2 input (–)*

u GND (Speed sensor)

y Speed sensor input

t Regulated 12 V output.

(20 mA Max.)

q N.C

w N.C

e NMEA 1 input (+)*

or AUX input (+); DATA

r NMEA 1 input (–)*
or AUX input (–); DATA

u GND

y AUX input (–); CLOCK

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

or N+1 (+) data input

■ Connecting the units

Ground

Battery
12 to 32 V DC

Red:

Black: _

PWR

GND

NEVER connect anything
other than the supplied
scanner unit.

NMEA1:
Bearing data input

NMEA2:
NMEA 0183 data input
Speed sensor input

+

■ Power source requirement

• DC power source The radar 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.

■ Ground connection

To prevent electrical shocks and other problems, ground the display unit through the [ GND] terminal on the unit’s
rear panel.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.

CAUTION: Incorrect cable connection may

damage the radar.

NMEA1 connection NMEA2 connection

*NMEA input impedance: 500 ø

DC input

+

Ground

_

INST ALLA TION AND CONNECTIONS

27

9

■ Installing the EX-2473 display unit

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

q 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.

w To minimize interference, KEEP the unit AT LEAST

THE COMP ASS SAFE DISTANCE stated in the se-

rial No. seal on the rear panel away from the com­pass and navigation receiver.

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

fresh water spray or immersion.

r Select a location where it is easy to perform main-

tenance or adjustment after installation.

t Select a location which can support the weight of

the display unit.

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

vibrations or direct sunlight.

• Mounting
The stand supplied with the display unit allows “dash-
board” or “overhead” mounting.

q Hold the stand of the display unit up to the selected

location and mark pilot holes for the 4 installation
holes using the template.

•The template is provide on p. 43.

w Drill 4 holes of 3.6 to 4.0 mm (5/32 in) in diameter.
e Secure the stand with the self-tapping screws,

spring washers, flat washers, flat washer spacers
and mounting rubbers. (see below Fig.)

r Mount the display unit onto the stand and secure it

with two mounting screws.

t Push the tilting lever down and adjust the angle of

the unit as appropriate; then return the lever to the
original position.

Tilting lever

Tilting

Removing the unit from the stand

186 mm; 76⁄16”

37 mm; 115⁄32”

103 mm; 4”

125 mm; 415⁄16”

196 mm; 723⁄32” 125 mm; 429⁄32”

203 mm; 8”

76.5 mm; 3”

236 mm; 9

7

⁄32”

185 mm; 7”

236 mm; 9

7

⁄32”

*Protrusions not included

MARINE RADAR

•Dimensions

INST ALLA TION AND CONNECTIONS

28

9

■ Mounting the EX-2474 scanner unit

• Location

The scanner unit is designed to be weatherproof and
completely watertight. Select a place for installation
which meets the following important conditions.

q 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 intercept the scanning beam.

w KEEP the scanner unit away from any smoke-

stacks. Smoke can damage the unit.

e 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.

r The unit should be placed as high as possible on

the boat to obtain best performance with maximum
range.

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

one above, and one below.

y The mounting surface must be parallel with the

boat’s waterline.

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

build a special frame for installation.

• Mounting
q Drill four holes of 12 mm (1/2 in) in diameter using

the template.

•The template is provided on p. 45.

w If the mounting surface or platform is metal, apply

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

e Fix the scanner unit to the selected position with

bolts of 10 mm (3/8 in) in diameter, with flat and
spring washers. The supplied bolts are two lengths:
25 mm (1 in) or 50 mm (2 in).

CAUTION: SECURE the four bolts tightly.

WARNING:

BE SURE [POWER] is OFF when-

ever you are working with the scanner unit.

Unit: mm (in)

Ship's bow direction Ship's bow direction

)

16

/

9

243 (9

29

607 (23

/

)

32

13

45.5 (1

/

16

)

150.5 (5

15

/

)

16

)

16

/

9

90.5 (3
)

16

/

9

90.5 (3

9

INST ALLA TION AND CONNECTIONS

29

■ Wiring the EX-2474 system cable

q Loosen the four bolts using a hex head wrench on

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

w Loosen the nut on the scanner unit and pass the

system cable through the nut and sealing tube.

e Loosen the six screws on the IF unit. Then pull and

remove the cover.

r Insert the IF cable (black and white) connector to

the IF unit connector J3. (*1; Be sure to follow the
following diagram carefully)

t Replace the IF unit cover to the proper position,

then tighten the nine screws.

y Connect the shielding wire to the ground plate with

the screw as shown in the diagram.

u Clamp the system cable with the ferrite core at-

tached near the sealing connector. Be sure to clamp
it tightly.

i Connect the power cable (black and red) end to the

power unit connector. (*2; Be sure to follow the fol­lowing diagram carefully).

o Tighten the sealing-nut, then replace the radome

cover over the scanner unit.
DO NOT stretch the system cable too much, other­wise miss contact of the connector may occur.

!0 Tighten the four bolts on the bottom of the scanner

unit.

• The four projections around the circumference of
the radome cover show the positions of the bolt
receptacles.

CAUTION: DO NOT cut the supplied system

cable.

*2; Power

connector

*1; IF cable

•Connect the system cable

•Scanner unit disassembly

Ship's bow direction

Face the Ω mark in the direction
of the ship's bow.

System cable

Scanner unit disassembly

Stern

Shielding wire

Ferrite core

Sealing tube

Nut

30

9

INST ALLA TION AND CONNECTIONS

THIS PAGE IS INTENDED TO BE BLANK.

31

10

SERVICE MAN MENU

To open the “SERVICE MAN” menu.
q Push [MENU] several times to show the “EPA”

menu.

w Push [ ] to select “INT. SETTING”, then push

[ ]

to show the “INT. SETTING” menu.

e Push

[ ]

to select “SERVICE MAN”, then push

[ ]

to open the “SERVICE MAN” menu.

■SPD ADJ.

•Enter the pulse rate of the speed sensor.

■HDG ADJ.

•Adjusts the electronic heading line adjustment.

■TIMING ADJ.

•Corrects the distance.

■MBS SET

•Adjusts the MBS.

■TUNE PRESET

•Pre-adjust the objects for clarity on the screen above
the 6 NM range.

■TUNE SET

•Adjusts the object more clearly.

■T.METER SET

•Adjusts the tuning level indication to the max. level.

■RANGE

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

: Choose the selectable screen range.

■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.

SPD ADJ.

HDG ADJ.
TIMING ADJ.
MBS SET
TUNE PRESET
TUNE SET
T.METER SET

ENGLISH

24000

0.0

OUTPUT VOLT. 30.2
HV 349
MONITOR 47
HEATER 0.53
MG 0.0
TX TIME

1.2H

1/2

1/4

1/8

3/4

2
3

1

1.5

4
6

36

8

12

16
24

32
36

■ Service man menu

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.

32

10

SERVICE MAN MENU

■ SPD adjustment

q Push [MENU], [ ]/[ ] several times to display the

“SERVICE MAN” menu.

w Push [ ] until the “SPD ADJ.” section becomes

highlighted.

e Push [ ]/[ ] to enter the pulse rate (pulse numbers

per one mile) of the speed sensor unit.

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

■ 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 direction of the bow.

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

get.

w Push [TX] to display the target on the screen.
e Push [MENU], [ ]/[ ] several times to display the

“SERVICE MAN” menu.

r Push [ ] until the “HDG ADJ.” section becomes

highlighted.

t Push [ ]/[ ]

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.

Angle of
difference

SPD ADJ.

HDG ADJ.

TIMING ADJ.
MBS SET
TUNE PRESET
TUNE SET
T.METER SET

ENGLISH

24000

0.0

OUTPUT VOLT. 30.2
HV 349
MONITOR 47
HEATER 0.53
MG 0.0
TX TIME

1.2H

1/2

1/4

1/8

3/4

2

3

1

1.5

4
6

36

8

12

16
24

32
36

8

NM

3049

˚

T

Push [ ]/[ ]

SPD ADJ.

HDG ADJ.

TIMING ADJ.
MBS SET
TUNE PRESET
TUNE SET
T.METER SET

ENGLISH

24000

8.3

OUTPUT VOLT. 30.2
HV 349
MONITOR 47
HEATER 0.53
MG 0.0
TX TIME

1.2H

1/2

1/4

1/8

3/4

2
3

1

1.5

4
6

36

8

12

16
24

32
36

8

NM

3049

˚

T

33

10

SERVICE MAN MENU

■ MBS adjustment

NOTE: While pushing and holding [MOB] and

[TRAILS], push [POWER] to activate the ‘Tuning ad­justment’ setting.

q Push [–] several times to select the 1/4 NM range

or shorter. Push [MENU], [ ]/[ ] several times to

display the “SERVICE MAN” menu.

w Push [ ] until the “MBS” section becomes high-

lighted.

e Push [ ]/[ ] to adjust so that the echo of near by

objects are discerned with maximum definition.

r Push [MENU] to return the normal screen.

■ 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, cable
length adjustment is necessary.

q Position your boat near a straight target such as

breakwater, wharf, etc.

w Push [–] several times to select 1/8 or 1/4 NM range.
e Push [TX] to display the target on the screen.
r Push [MENU], [ ]/[ ] several times to display the

“SERVICE MAN” menu.

t Push [ ] until the “TIMING ADJ.” section becomes

highlighted.

y Push [ ]/[ ] to adjust the echo until it becomes

straight. (see below)

u Push [MENU] to return to the normal screen.

Proper adjustment

Improper, pulling inward

Improper, pushing outward

CAUTION:

In the case, when you re-adjust MBS adjustment
from the minimum position, AUTO TUNE (Auto­matic tuning) function may not tune properly.

34

10

SERVICE MAN MENU

■ RANGE selection

q Push [MENU], [ ]/[ ] to display the “SERVICE

MAN” menu.

w Push [ ] until the “"” appears on the screen.
e Push [ ]/[ ] to choose the selectable screen

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

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

[ ]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 (NM)

SPD ADJ.

HDG ADJ.
TIMING ADJ.
MBS SET
TUNE PRESET
TUNE SET
T.METER SET

ENGLISH

24000

0.0

OUTPUT VOLT. 30.2
HV 349
MONITOR 47
HEATER 0.53
MG 0.0
TX TIME

1.2H

1/2

1/4

1/8

3/4

2
3

1

1.5

4
6

36

8

12

16
24

32
36

➨

*

4NM range will be skipped.

■ Tuning adjustment

NOTE: While pushing and holding [MOB] and

[TRAILS], push [POWER] to activate the ‘Tuning ad­justment’ setting.

q Push [MENU], [ ] and

[ ]

to display the “SERVICE

MAN” menu.

w Push [+] several times to select the 6 NM range or

longer.

e Push

[ ]/[ ]

to adjust a “TUNE SET” to the center

position.

r Push [ ]/[ ] to select “TUNE PRESET”.
t Push

[ ]/[ ]

to adjust a comparatively weak echo

for maximum definition.

y Push

[ ]

to select the “T.METER SET”.

u Push [ ]/[ ] to adjust a tuning level to show that it

is at peak level. (see left)

i Push [MENU] to return to the normal screen.

•DO NOT change the screen range before returning to
the normal screen.

NOTE:When returning to the normal screen, the tun­ing level indicator automatically adjusts to 85% of the
full scale.

SPD ADJ.
HDG ADJ.
TIMING ADJ.
MBS SET

TUNE PRESETHDG ADJ.

TUNE SET
T.METER SET

ENGLISH

24000

0.0

OUTPUT VOLT. 30.2
HV 349
MONITOR 47
HEATER 0.53
MG 0.0
TX TIME

1.2H

1/2

1/4

1/8

3/4

2
3

1

1.5

4
6

36

8

12

16
24

32
36

8

NM

3049

˚

75
35

T

■ Auto gain adjustment

NOTE: While pushing and holding [MOB] and

[TRAILS], push [POWER] to activate the

‘

Auto gain’

setting.
q Push [+] several times to select the maximum

range. Then push [TX].

w Push [ADJ] for 0.5 sec. to turn the Adjust setting to

manual control.

e Push [ ]/[ ]

to adjust the gain to the point where

noise just begins to appear on the screen.

r Push [ADJ] for 2.5 sec. to complete the adjustment.

• Beep tone “Pi pi” emits.

Tuning level

Tuning level indicator

11

35

ERROR MESSAGE

Message Condition

BRG INPUT FAIL*

1

•The Azimuth signal is interrupted. An alarm tone is emitted within 5
sec. and the display reverts to H UP mode in approx. 1 min.

TRIG SIGNAL FAIL*

1

• If the TRIGGER signal is interrupted for more than 15 sec., an alarm

tone is emitted.

SHM SIGNAL FAIL*

2

• If the SHM signal is interrupted for more than 15 sec., an alarm tone is

emitted.

VIDEO SIGNAL FAIL*

2

• If the VIDEO signal is interrupted for more than 15 sec., an alarm tone

is emitted.

POSN INPUT FAIL*

1

• If the position signal is interrupted for more than 15 sec., an alarm

tone is emitted.

NO. XX TARGET IS NOT UPDATED*3• The plot will be dropped if the time between consecutive plots ex-

ceeds 15 min.

CHECK SCANNER CONNECTION*

4

•The system cable may not be connected properly.

CHECK “SERVICEMAN MENU” DATA*2•Turn the power off and consult your dealer or service man, as soon

as possible.

■ Error message list

*1Push any key to cancel the error message and beep tone. Turn the power OFF, then check the external data

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

12

36

MAINTENANCE

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

•Cleaning

q Wipe the surface of the scanner with a clean soft

cloth.

•DO NOT use strong solvents such as benzene or alco­hol.

w Check that there is no drift or caked salt.

•A heavy deposit of dirt or caked 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

packing and replace it if necessary.

•Mounting

Check the mounting bolts of the scanner unit and
tighten if necessary.

■ Periodic maintenance

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.

■ Scanner unit maintenance

■ Display unit maintenance

• 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.

WARNING:

BE SURE the power is OFF before

working on the radar.

WARNING: BE SURE the power is OFF before

working on the radar.

WARNING:

BE SURE the power is OFF before

performing any maintenance.

■ Options

•OPC-1076 SYSTEM CABLE

Allows you to install the display unit and scanner up to 15 m (49 7/32 ft) apart.

•OPC-1077 SYSTEM CABLE

Allows you to install the display unit and scanner up to 20 m (655/8 ft) apart.

•OPC-1078 SYSTEM CABLE

Allows you to install the display unit and scanner up to 30 m (98 7/16 ft) apart.

13

37

SPECIFICATIONS

General

• Minimum range

• Maximum range

• Measurement range

• Preheat time

• Connection length between display and scanner

unit

Scanner unit

◆ EX-2474

• Type

• Rotation speed (typical)

• Beam width (typical)

• Side lobe (typical)

• Polarization

• Transmission frequency

• Peak output power

• Pulse width

•Mixer and Local Oscillator

•Transmitting Tube

• Modulator

• Duplexer

• Intermediate frequency

• IF

• IF Band width

• Dimensions

•Usable temperature range

• Relative Humidity

• Weight

: 25 m; 82 ft (when measurement range is 1/8 NM)
: 36 NM (when measurement range is 36 NM)
: 1/8, 1/4, 1/2, 3/4, 1, 1.5, 2, 3, 4, 6, 8, 12, 16, 24, 32, 36,

(NM)

: 90 sec.
: 10 m; 3213/16 ft. (standard), 15 m; 497/32 ft (optional),

20 m; 655/8 ft (optional), 30 m; 987/16.(optional)

: 2 feet Slotted Waveguide Array, enclosed in a radome.
: 24 rpm, 36 rpm, 48 rpm (typ.)
: Horizontal beam 4˚ (typ.)

Vertical beam 22˚ (typ.)
: –18 dB
: Horizontal
: 9410 MHz ±

30 MHz P0N
: 4 kW
: 80 nS/2880 Hz, 80 nS/2160 Hz, 250 nS/2160 Hz,

350 nS/2160 Hz, 900 nS/720 Hz.
: Microwave Integrated Circuit
: Magnetron MAF1421B
: FET switching
: Circulator
: Automatic/manual selectable
: 60 MHz
: 10 MHz, 3 MHz
: 607 (Ø) x 243 (H) mm
: –25˚C ~ +70˚C; –13˚F ~ 158˚F
: Less than 95% at 35˚C (+95˚F)
: 9 kg; 19

27

/32 lb (without cable)

Display unit

• LCD display

• Pixels

• Input

• Power supply requirement

• Power consumption (at wind velocity zero)

• Usable temperature range

• Relative humidity

• Dimensions

• Weight

: 5.7-inch MONO LCD display
: 320 x 240 dot

: NMEA 0183 format (for navigation receiver) ; N+1

format (flux gate compass sensor), AUX
: 10.2 ~ 42 V DC
: Approx. 47 W

: –15˚C ~ +55˚C; +5F ~ 131˚F
: Less than 95% at 35˚C (+95˚F)

:

186 (W) x

203(H)

x 103(D) mm; 7 5/16 (H) x 8 (W)x 4 1/16

(D) inch

: 2 kg; 4 13/32 lb

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

38

14

EXTERNAL DATA LIST

EXTERNAL DATAINPUT

NMEA1*

2

NMEA2*

2

“HDT”, “HDM”“RMC”, “GGA”, “GLL”, “VTG”, “WPL”, “BWC”, LOG

N+1, AUX

FUNCTION DISPLAY BEARING SPEED POSITION WAY POINT

HEAD UP HU

COURSE UP CU Required

NORTH UP NU Required

TRUE MOTION OG*

1

TM Required “RMC”, “GGA” or “GLL”

TW*

1

TM Required LOG

SPEED DISPLAY OG*

1

SOG “RMC” or “VTG”

TW*

1

STW LOG

HEADING BEARING HDG Required

WAY POINT WPT Required “RMC”, “GGA” or “GLL”“WPL” or “BWC”

OWN VECTOR OG*

1

Required “RMC” or “VTG”

TW*

1

Required LOG

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

EPA OG*

1

EPA Required “RMC” or “VTG”

TW*

1

EPA Required LOG

VRM/PI/WPT/MOB estimated time OG*

1

“RMC” or “VTG”

of arrival TW*

1

LOG

MAGNETIC VARIATION (AUTO) “RMC” or “VTG”

*

1

OG; Over ground, TW; Through the water.

*2NMEA1 and NMEA2 connectors; See p. 26.

•“HDT”, “HDM”, “RMC”, “GGA”, “GLL”, “VTG”, “WPL” and “BWC” are SENTENCES of the NMEA0183.

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

15

39

TEMPLATE

160 mm; 6

5

⁄

16

"

91 mm; 3

19

⁄32"

• EX-2473 TEMPLATE

40

Ship bow direction

Radius is 6 mm
(1⁄4 in).

•EX-2474
Scanner unit
template

45.5 mm (125⁄32 in)

90.5 mm (39⁄16 in)

90.5 mm (39⁄16 in)

150.5 mm (515⁄16 in)

37

41

15

TEMPLATE

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

A-6014H-1EX-q
Printed in Japan
© 2001 Icom Inc.