Icom MR-1000RII User manual

INSTRUCTION MANUAL
MARINE RADAR
MR-1000R™
(Radome type)
MR-1000T™
(Open array type; 4 kW)
MR-1000T
(Open array type; 6 kW)

i
• 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
yHex head wrench ................................................ 1
uCap bolts (M8×18) .............................................. 4
iDish washers (M8) .............................................. 4
oSealing washers (T) ............................................ 4
!0 Flat washers (M8) ............................................... 4
!1 Grounding terminal ............................................. 1
!2 Ferrite EMI filter .................................................. 1
• SX-2713/SX-2779 (10-inch CRT display unit)
Qty.
q NMEA connector (FM14-8P) ............................... 1
w NMEA connector (FM14-7P)................................ 1
e Spare fuse (FGB 10 A) ....................................... 1
r Spare fuse (FGB 5 A: for over 24 V power supply)
........................................................................... 1
t DC power cable ................................................... 1
y Mounting bracket ................................................. 1
u Mounting knob bolts ............................................ 2
i Installation bolts (M6×30) .................................... 5
o Installation nuts (M6) ............................................ 5
!0 Spring washers (M6) ........................................... 5
!1 Flat washers (M6) ............................................... 5
!2 Instruction manual ............................................... 1
!3 Operating guide .................................................. 1
!4 Viewing hood ....................................................... 1
SYSTEM COMPONENTS
MODEL NAME CRT DISPLAY SCANNER UNIT
MR-1000RII SX-2713 (10-inch CRT) EX-2714 (Radome type)
MR-1000TII
SX-2779 (10-inch CRT)
EX-2780 (Open array type; 4 kW)
MR-1000TIII EX-2780 (Open array type; 6 kW)
SUPPLIED ACCESSORIES

ii
FOREWORD
Thank you for purchasing Icom’s MR-1000RII/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 10-inch CRT
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 THIS INSTRUCTION MANUAL
CAREFULLY before attempting to operate the
radar.
SAVE THIS INSTRUCTION MANUAL. This
manual contains important safety and operating
instructions for the MR-1000RII/TII/TIII.
EXPLICIT DEFINITIONS
WORD DEFINITION
RDANGER! Personal death, serious injury or an
explosion may occur.
RWARNING! Personal injury, fire hazard or electric
shock may occur.
CAUTION Equipment damage may occur.
NOTE
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.
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.
qSelect the screen range between 6 NM
to 12 NM with [+/–]. (p. 1)
wSet the [GAIN] as high as possible. (p. 2)
eSet the [SEA] to minimum. (p. 2)
rSet the [RAIN] to minimum. (p. 2)
tTurn OFF the [IR] function. (p. 10)
yTurn OFF the [STRETCH] function.
(p. 10)
The MR-1000RII/TII/TIII are supplemental aids to navigation and are not intended to be a
substitute for accurate and current nautical charts.

iii
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 dis-
play 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 dam-
age 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 dam-
age 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.
DO NOT use the display unit near any magnetic
materials, such as a loudspeaker or a large power
transformer, as this can cause distortion of the CRT
display.
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, scan-
ner unit are connected.
However, if it is dropped, splash resistance cannot be
guaranteed because of possible damage to the case
or the waterproof seals.
For Scanner unit:
R DANGER: HIGH VOLTAGE! NEVER open
the scanner unit. The scanner unit contains high volt-
age that could be fatal. And there are no user adjust-
ment 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.
RDANGER: HIGH VOLTAGE! To prevent
an electric shock, turn the radar ’s power is OFF and
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 de-
vice.
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 harm-
ful radiation, turn the radar’s power is OFF before
beginning work on the scanner unit.
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 high-
pressure 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 require-
ments while connecting to the radar unit.
PRECAUTIONS

iv
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 ............................................................. 5–6
■VIDEO ............................................................. 5
■FUNCTION ...................................................... 5
■ATA (Automatic Tracking Aid) ........................... 6
■INT. SETTING .................................................. 6
3 BASIC OPERATION .................................... 7–12
■Checking the installation ................................. 7
■Turning power ON/OFF.................................... 7
■Basic operation ............................................... 8
■RAIN function................................................... 9
■SEA function.................................................... 9
■OFF CENTER function .................................... 9
■IR function ..................................................... 10
■STRETCH function ....................................... 10
■ZOOM function ............................................. 10
■TRAILS function ............................................ 11
■Power save function ...................................... 11
■Ship speed indication .................................... 12
■Position indication ......................................... 12
■Waypoint indication........................................ 12
■Long pulse function........................................ 12
■Bearing setting .............................................. 12
4 DISTANCE AND DIRECTION
MEASUREMENTS ..................................... 13–15
■Distance measurement ................................. 13
■Bearing and Distance measurement ............ 14
■Advanced measurements ............................. 15
5 ALARM FUNCTION ......................................... 16
■Alarm zone setting ........................................ 16
■Zone alarm setting ........................................ 16
6 ATA (Automatic Tracking Aid) .................. 17–19
■ATA (Automatic Tracking Aid) ........................ 17
■ATA menu setting .......................................... 17
■ATA operation ................................................ 18
■Plotting marks ............................................... 18
■Course and speed vector .............................. 18
■Plots .............................................................. 19
7 BASIC RADAR THEORY .......................... 20– 22
■Side-lobe echoes .......................................... 20
■Indirect echoes ............................................. 20
■Multiple echoes ............................................. 21
■Minimum range ............................................. 21
■Blind and Shadow sectors ............................ 22
■Target resolution ............................................ 22
8 INSTALLATION AND CONNECTIONS ..... 23–29
■Connecting the units ..................................... 23
■Power source requirement ............................ 23
■Ground connection ........................................ 23
■Installing the display unit ............................... 24
■Mounting the EX-2714 scanner unit ............. 25
■Wiring the EX-2714 system cable ................. 26
■Mounting the EX-2780 scanner unit ............. 27
■Wiring the EX-2780 system cable ................. 28
■Attaching the EX-2780 scanner unit ............. 29
9 OTHER FUNCTIONS ....................................... 30
10 SERVICE MAN MENU ............................... 31–33
■Service man menu ........................................ 31
■Select the language ...................................... 31
■TIMING adjustment ....................................... 32
■HDG adjustment ............................................ 32
■SPD adjustment............................................. 33
■RANGE selection........................................... 33
11 ERROR MESSAGE .......................................... 34
■Error message list ......................................... 34
12 MAINTENANCE................................................ 35
■Periodic maintenance ................................... 35
■Scanner unit maintenance ............................ 35
■Display unit maintenance .............................. 35
■Options ......................................................... 35
13 SPECIFICATIONS ...................................... 36–37
14 EXTERNAL DATA LIST ................................... 38
(Supplement) TEMPLATE
■Template for the display unit
• SX-2713/SX-2779
(Display mount bracket template)
■Template for the scanner unit
• EX-2714
• EX-2780
TABLE OF CONTENTS

1
PANEL DESCRIPTION
1
■Front panel
qPOWER SWITCH [POWER]/[ ] (p. 7)
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.
wTRANSMIT/SAVE SWITCH [TX (SAVE)]/
[ ]
➥Push to toggle between the TX mode and the
standby mode. (p. 8)
➥Hold down for 1 second to turn ON the power
save function. The radar for TX interval scan is
fixed at 10 revolutions. (p. 11)
• Select the save time in INT. SETTING menu.
eRANGE UP/ DOWN SWITCHES [+]/[–]/
[ ]/[ ] (p. 8)
Push [+] to increase the screen range.
Push [–] to decrease the screen range.
rUP, DOWN, LEFT, RIGHT KEYS [p] [q] [t] [u]
Set the EBLs, VRMs, alarm area, ATA target, etc.
according to the key pushed.
Use [p] [q] to select menu item and [t] [u] to set
the item.
Using [p] [t]/[p] [u] or [q] [t]/[q] [u] combina-
tion allows you to move the cross line cursor to the
upper (or lower) left or right.
tTRAILS SWITCH [TRAILS]/[ ] (p. 11)
Push to toggle the trail function ON or OFF. This is
useful for watching other ship’s tracks, approximate
relative speed.
• Trail Time can be set in VIDEO menu.
yZOOM FUNCTION [ZOOM]/[ ] (p. 10)
Push [TARGET]/[ ] and [TRAILS]/[ ] si-
multaneously 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 own
ship.
• This function is not available on the 1⁄8and the 32 NM or
higher ranges.
uMODE 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
only when a bearing data input is connected. (p. 38)
• The TM screen requires bearing data and LOG or posi-
tion data. (p. 38)
• TheTM screen is not selectable on the 32 NM or higher
range.
iOFF CENTER FUNCTION [OFF CENT]/[ ]
(p. 9)
Push [ALM]/[ ] and [MODE]/[ ] simulta-
neously to turn the OFF CENTER function ON or
OFF.
• This function is usable on 24NM or less ranges.
MOB
GAIN
SEA
RAIN
POWER
TX
SAVE
TARGET TRAILS
ZOOM
ALM
MODE
OFF CENT
EBL1
VRM1
PI
BRILL MENU
HL OFF
EBL2
VRM2
MARINE RADAR
TX
SAVE
TARGET TRAILS
MODEALM
+
-
MOB
MENU
EBL2
VRM2
EBL1
VRM1
BRILL
ZOOM
OFF CENT
PI
HL OFF
GAIN
SEA
RAIN
POWER
e
r
q
w
t
u
o
!1
y
i
!2
!3
!4
!5
!6
!7
!8
!9
@0
e
r
q
w
t
u
o
!1
y
i
!2
!3
!4
!5
!6
!7
!8
!9
@0
!0 !0
Control panel (English) Control panel (Chinese)

2
1
PANEL DESCRIPTION
oEBL2 (VRM2) SWITCH [EBL2 (VRM2)]/
[] (pp. 14, 15)
Push to display the electronic bearing line 2 (EBL2)
and the variable range marker 2 (VRM2), and acti-
vate the [t] [u] for the electronic bearing line se-
lector and [p] [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 PARALLEL INDEX LINE FUNCTION [PI]/[ ]
Push [EBL1]/[ ] and [EBL2]/
[ ] simultaneously to toggle the paral-
lel index line ON and OFF.
• Push [t] [u] to rotate the lines, and push [p] [q] to
adjust the line spaces.
!1 MENU SWITCH [MENU]/[ ] (pp. 5, 6)
Push [MENU]/[ ] to toggle the VIDEO, FUNC-
TION, ATA, INT. SETTING and SERVICE MAN
menus. Push [p] [q] to select the items and push
[t] [u] to change the setting.
!2 HEADING LINE OFF FUNCTION [HL OFF]/
[] (p. 8)
Push [BRILL]/[ ] and [MENU]/[ ] simultane-
ously to turn OFF the heading line temporarily.
!3 GAIN CONTROL [GAIN]/[ ](p. 8)
Adjusts the receiver amplifier gain.
• Clockwise rotation increases the gain.
• Increased gain may increase screen noise.
!4 SEA CLUTTER CONTROL [SEA]/[ ] (p. 9)
This function serves to eliminate echoes from the
waves at close range.
Reduces the receiver gain for close objects within a
radius of 8 nautical miles (approximately) to elimi-
nate sea clutter.
Rotate the control fully clockwise to activate the au-
tomatic SEA control function. SEA indicator (@6) ap-
pears in the upper left of the screen.
• Under normal conditions set the SEA to a minimum.
• Use this control with caution when the sea is rough.
!5 RAIN CLUTTER CONTROL [RAIN]/[ ]
(p. 9)
This function eliminates echoes from rain, snow,
fog, etc.
Rotate the control fully counter clockwise to deacti-
vate the RAIN function.
RAIN indicator (@8) 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 es-
timated time to the MOB point with current speed.
• Hold down [MOB]/[ ] for 1 second to cancel the
function.
• Position and bearing data are necessary.
!7 TARGET SWITCH [ATA]/[ ] (pp. 17–19)
A setup of target caught by ATA (up to 10 targets
can be set).
• Push [p] [q] [t] [u] to move the cross cursor on the
echo which you want to plot, before turning ON the func-
tion.
• Set the “ATA” function to ON in the “ATA” menu, then set
the appropriate No. DISP, VECT, OWN VECT, ALARM,
CPA LIMIT and TCPA LIMIT settings.
!8 ALARM SWITCH [ALM]/[ ] (p. 16)
➥Push [ALM]/[ ] to toggle the alarm function
ON and OFF.
➥Hold down [ALM]/[ ] for 1 second to enter the
alarm area setting condition.
• Push [p] [q] [t] [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] [u] to fix the finish point, and
the desired alarm zone will automatically form.
!9 EBL1 (VRM1) SWITCH [EBL1 (VRM1)]/
[ ] (pp. 14, 15)
Push to display the electronic bearing line 1 (EBL1)
and the variable range marker 1 (VRM1) and acti-
vate [t] [u] for the electronic bearing line selector,
and [p] [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. 8)
➥Push to increase or decrease the brilliance of the
picture on the display.
➥Hold down for 1 second to select the 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.

3
1PANEL DESCRIPTION
@1 TUNING LEVEL INDICATOR (p. 8)
Shows the receiver tuning level.
@2 TUNING MODE INDICATOR (p. 8)
 “M.TUNE” appears when the manual tuning func-
tion is in use.
@3 FIXED RING RANGE READOUT (p. 13)
Shows the interval range of the fixed ring.
• This readout appears when “RING” in the FUNCTION
menu is turned ON.
@4 SCREEN RANGE READOUT (p. 13)
Shows the maximum range of the displayed screen.
• The range indicated is nautical miles (NM).
@5 SHIP SPEED READOUT (p. 12)
Shows the ship speed.
• SOG: When GPS is selected in the INT. SETTING
menu.
• STW: When LOG is selected in the INT. SETTING
menu.
@6 AUTO SEA INDICATOR (p. 9)
Appears when the automatic SEA control function
is turned ON.
@7 LONG PULSE INDICATOR (p. 12)
Appears when the long pulse is in use.
@8 RAIN CONTROL INDICATOR (p. 9)
Appears when the RAIN function is in use.
@9 MODE INDICATOR
Head-up, Course-up, North-up and True Motion
screens are available.
• N UP and C UP screens require external bearing data.
(p. 38)
• TM screen requires bearing data and LOG or position
data.
#0 HEADING LINE (p. 8)
Heading line indicates the ships bow direction.
#1 ALARM ZONE (p. 16)
Shows the alarm zone.
•Appears when the alarm function is in use.
#2 WAYPOINT MARKER (p. 12)
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. 38)
#3 FIXED RANGE RINGS (p. 13)
Shows the distance in 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.
#4 GPS INDICATOR (p. 23)
Indicator appears when the GPS or DGPS receiver
is connected.
:
:
:
:
(0.25)
MTUNE
TVECT
6M
0649NM
NM
CURS
STW 157
KT H UP
0174
˚ R
TRAILS
HDG2530 ˚T
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
ES
005
3/4
@1
@2
@3
@4
@5
@6
@7
@8
@9
#0
#1
#2
#3
#4
#5
#6
#7
#8
#9 $0
$1
$2
$3
$4
$5
$6
$7
$8
$9
%0
%1
%2
%3
%4 %5
%6 %7
%8
■Screen

4
1
PANEL DESCRIPTION
#5 COMPASS INDICATOR (pp. 23, 38)
• GYRO : NMEA (gyro) is connected.
• COMPASS : NMEA (compass), N+1 or AUX data is
connected.
#6 EBL1/ 2 READOUTS (pp. 14, 15)
Shows the bearing of the displayed Electronic Bear-
ing Lines (EBL1 and EBL2) when EBL is in use.
EBL2 shows PI (!0) readout.
#7 WAYPOINT/MOB READOUTS (p. 12)
➥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. 38)
➥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. 12)
Shows your own ship or cursor latitude and longi-
tude readout when external NMEA data in 0183 for-
mat 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 CURSOR INDICATOR
Shows the bearing and distance to the cursor.
$0 VECTOR INDICATOR (p. 17)
Shows the ATA and OWN vector type.
• T : True vector
• R : Relative vector
$1 VECTOR TIME INDICATOR (p. 17)
Shows the vector interval time. Select vector time in
the “TRAIL TIME” of the VIDEO menu.
• 30 minutes is applied, when ‘∞’ is selected for the vec-
tor time.
$2 TRAILS INDICATOR (p. 11)
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.
$3 HEADING INDICATOR
Shows the heading bearing readout.
• The HDG readout indicates the bow of the ship’s bear-
ing in a clockwise direction from north.
$4 IR INDICATOR (p. 10)
Eliminates or reduces interference caused by other
radar operating nearby.
• This function is available when the “IR” in the VIDEO
menu is set to 1 or 2.
$5 ECHO STRETCH INDICATOR (p. 5)
Appears when the echo stretch function is in use.
• This function is available when “STRETCH” in the
VIDEO menu is turned ON.
$6 CROSS LINE CURSOR
Used for measuring the bearing and distance, set-
ting the alarm zone, selecting the ATA targets, etc.
• Push [p] [q] [t] [u] one or more times to move the
cursor.
$7 EBL2 (pp. 14, 15)
Used for bearing measurement. When a target is
selected, the EBL readout (#6) shows the bearing.
$8 OWN SHIP VECTOR INDICATOR
Shows the vector of your own ship.
$9 VRM 1 (pp. 14, 15)
%0 VRM 2 (pp. 14, 15)
Used for distance measurement. When a target is
selected, the VRM1/2 readout (%3) shows the dis-
tance.
%1 NORTH MARK
The north mark shows the true north direction.
%2 EBL1 (pp. 14, 15)
Used for bearing measurement. When a target is
selected, the EBL readout (#6) shows the bearing.
%3 VRM1/2 READOUTS (pp. 14, 15)
Shows the distance of the displayed Variable Range
Markers (VRM1 and VRM2) when the VRM is in
use.
• Nautical miles (NM) and kilometers (KM) can be se-
lected in the FUNCTION menu as the distance unit.
%4 ALARM INDICATOR (p. 16)
Appears when the alarm function is in use.
%5 ZOOM INDICATOR (p. 10)
Appears when the zoom function is in use.
• Push [TARGET]/[ ] and [TRAILS]/[ ] simul-
taneously to turn the function ON or OFF.
%6 TIME INDICATOR
%7 TIME INDICATOR
Shows the estimated time to the marker edge from
the center of the marker, at the current speed.
%8 TIME INDICATOR
Shows the estimated time to the waypoint at the
current speed.

2
5
MENU
■VIDEO
VIDEO MENU
D.RANGE
IR
STRETCH
PULSE
SEA
TRAIL TIME
ON
12
LP
MANUAL
AUTO
MID. WIDE
OFF
OFF
SP
6S
3M
15S
6M
30S
15M
1M
TUNE
1234
NAR.
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.
Push [u] to select [MANUAL] then push
[q] to activate the manual tuning slider.
Push [t] [u] to adjust the desired tuning
level.
DD.RANGE
Select the dynamic range of the PPI (Plan Position In-
dicator).
• NAR. : Narrow dynamic range. Even weak reec-
tions 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) : Turn ON the Interference Reduction func-
tion 1 (Low) or 2 (High).
DSTRETCH
• OFF : Turn OFF the echo stretch function.
• ON : Turn ON the echo stretch function.
DPULSE
• SP : Select the short pulse.
• LP : Select the long pulse. LP indicator ap-
pears on the screen.
DSEA
• The characteristic (curve) of a SEA knob can be cho-
sen as the optimal characteristic out of four kinds with
the height of an antenna.
DTRAIL TIME
• 6S,15S, 30S, 1M, 3M, 6M, 15M or ∞:
Select the plot interval and vector time.
■FUNCTION
FUNCTIONMENU
POSN DISP
WPT ON
DIST UNIT
BRG
EBL/PI
ZONE ALARM
BEEP
MAG
PT/SB
KM
OUT
ON
OFF
CURS
NM
TRUE
TRUE
IN
RING
OFF ON
OFF
SHIP
360˚R
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.
DPOSN DISP
• SHIP : Display your own ship’s position.*1
• CURS : Display the cursor position.*2
*1External latitude/longitude data required.
*2External 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 or AUX).
• TRUE : Select the true North bearing.
• MAG : Select the magnetic North bearing.
DEBL/PI (except HDG and CSE) (p. 14)
• 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.