Furuno Radar Detector FR 8062 FR 8122 FR 8252 User Manual

MARINE RADAR  
FR-8062, FR-8122, FR-8252  
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SAFETY INSTRUCTIONS  
WARNING  
Radio Frequency Radiation Hazard  
The radar antenna emits electromagnetic radio frequency (RF) energy which can be  
harmful, particularly to your eyes. Never look directly into the antenna aperture from a  
close distance while the radar is in operation or expose yourself to the transmitting  
antenna at a close distance.  
Distances at which RF radiation levels of 100 W/m2 and 10 W/m2 exist are given in the  
table below.  
Note: If the antenna unit is installed at a close distance in front of the wheel house, it may  
be necessary to prevent transmission in that area to protect passengers and crew from  
microwave radiation. This can be done with Sector Blank in the System menu.  
Distance to  
100 W/m2 point  
Distance to  
10 W/m2 point  
1.20 m  
Model  
FR-8062  
FR-8122  
Antenna  
XN-12A  
XN-13A  
XN-12A  
XN-13A  
XN-12A  
XN-13A  
Nil  
Nil  
1.10 m  
Nil  
1.90 m  
Nil  
1.40 m  
0.40 m  
0.40 m  
4.60 m  
FR-8252  
3.10 m  
i
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SAFETY INSTRUCTIONS  
WARNING  
Use the proper fuse.  
WARNING  
ELECTRICAL SHOCK HAZARD  
Do not open the equipment.  
Fuse rating is shown on the equipment.  
Use of a wrong fuse can result in damage  
to the equipment.  
Only qualified personnel  
should work inside the  
equipment.  
Keep heater away from equipment.  
Turn off the radar power  
switch before servicing the  
antenna unit. Post a warn-  
ing sign near the switch  
indicating it should not be  
turned on while the antenna  
unit is being serviced.  
Heat can alter equipment shape and melt  
the power cord, which can cause fire or  
electrical shock.  
Do not place liquid-filled containers on  
the top of the equipment.  
Prevent the potential risk of  
being struck by the rotating  
antenna and exposure to  
RF radiation hazard.  
Fire or electrical shock can result if a liquid  
spills into the equipment.  
Do not operate the equipment with wet  
hands.  
Wear a safety belt and hard  
hat when working on the  
antenna unit.  
Electrical shock can result.  
Serious injury or death can  
result if someone falls from  
the radar antenna mast.  
Do not disassemble or modify the  
equipment.  
Fire, electrical shock or serious injury can  
result.  
Turn off the power immediately if water  
leaks into the equipment or the equip-  
ment is emitting smoke or fire.  
Continued use of the equipment can cause  
fire or electrical shock.  
ii  
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SAFETY INSTRUCTIONS  
CAUTION  
The plotting accuracy and response of  
this ARP meets IMO standards.  
Tracking accuracy is affected by the  
following:  
WARNING  
No one navigational aid should be relied  
upon for the safety of vessel and crew.  
The navigator has the responsibility to  
check all aids available to confirm  
position. Electronic aids are not  
Tracking accuracy is affected by course  
change. One to two minutes is required to  
restore vectors to full accuracy after an  
abrupt course change. (The actual  
amount depends on gyrocompass  
specifications.)  
The amount of tracking delay is inversely  
proportional to the relative speed of the  
target. Delay is on the order of 15-30  
seconds for high relative speed; 30-60  
seconds for low relative speed.  
a substitute for basic navigational  
principles and common sense.  
The ARP automatically tracks  
automatically or manually acquired radar  
targets and calculates their courses and  
speeds, indicating them by vectors. Since  
the data generated by the auto plotter  
are based on what radar targets are  
selected, the radar must always be  
optimally tuned for use with the ARP to  
ensure required targets will not be lost or  
unwanted targets such as sea returns  
and noise will not be acquired and  
tracked.  
The data generated by ARP and AIS are  
intended for reference purposes only.  
Check all available navigation aids to  
determine target moviement.  
A target does not always mean a land-  
mass, reef, ships or other surface vessels  
but can imply returns from sea surface  
and clutter. As the level of clutter changes  
with environment, the operator should  
properly adjust the A/C SEA, A/C RAIN  
and GAIN controls to be sure target  
echoes are not eliminated from the  
radar screen.  
iii  
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SAFETY INSTRUCTIONS  
WARNING LABELS  
Warning labels are attached to the equipment.  
Do not remove any label. If a label is missing or  
damaged, contact a FURUNO agent or dealer  
about replacement.  
DISPLAY UNIT  
WARNING  
To avoid electrical shock, do not  
remove cover. No user-serviceable  
parts inside.  
Name:  
Warning Label 1  
Type:  
86-003-1011-1  
Code No.: 100-236-231  
ANTENNA UNIT  
WARNING  
Radiation hazard. Only qualified  
personnel should work inside scanner.  
Confirm that TX has stopped before  
opening scanner.  
Name:  
Warning Sticker  
Type:  
03-142-3201-0  
Code No.: 100-266-890  
TFT LCD  
The high quality TFT (Thin Film Transistor) LCD  
displays 99.999% of its picture elements.  
The remaining 0.001% may drop out or light,  
however this is an inherent property of the LCD;  
it is not a sign of malfunction.  
iv  
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TABLE OF CONTENTS  
FOREWORD...............................................................................................ix  
SYSTEM CONFIGURATION ......................................................................xi  
1. OPERATIONAL OVERVIEW..............................................................1-1  
1.1 Controls .....................................................................................................................1-1  
1.2 Turning the Radar On/Off, Transmitting ....................................................................1-3  
1.3 Display Indications.....................................................................................................1-4  
1.4 Adjusting Display Brilliance, Panel Dimmer...............................................................1-5  
1.5 Menu Overview..........................................................................................................1-5  
1.6 Tuning........................................................................................................................1-7  
1.7 Presentation Modes...................................................................................................1-8  
1.8 Choosing a Range Scale.........................................................................................1-10  
1.9 Choosing a Pulse Length ........................................................................................1-11  
1.10 Adjusting the Gain (sensitivity) ................................................................................1-12  
1.11 Suppressing Sea Clutter..........................................................................................1-13  
1.12 Suppressing Rain Clutter.........................................................................................1-14  
1.13 Automatic Suppression of Sea and Rain Clutters ...................................................1-15  
1.14 Cursor......................................................................................................................1-16  
1.15 Interference Rejector...............................................................................................1-17  
1.16 Measuring the Range to a Target............................................................................1-18  
1.17 Measuring the Bearing to a Target..........................................................................1-20  
1.18 Measuring the Range and Bearing Between Two Targets......................................1-21  
1.19 Target Alarm............................................................................................................1-22  
1.20 Off Centering the Display ........................................................................................1-24  
1.21 Zoom .......................................................................................................................1-25  
1.22 Echo Stretch ............................................................................................................1-27  
1.23 Echo Averaging .......................................................................................................1-28  
1.24 Target Trails ............................................................................................................1-29  
1.25 Parallel Index Lines .................................................................................................1-34  
1.26 Outputting Target Position, Inscribing Origin Mark..................................................1-35  
1.27 Temporarily Hiding the Heading Line ......................................................................1-36  
1.28 Custom Setup..........................................................................................................1-36  
1.29 Programming Function Keys (F1 and F2 keys).......................................................1-39  
1.30 Noise Rejector.........................................................................................................1-40  
1.31 Suppressing Second-trace Echoes .........................................................................1-40  
1.32 Watchman ...............................................................................................................1-41  
1.33 Color Schemes ........................................................................................................1-42  
1.34 Navigation Data.......................................................................................................1-43  
1.35 Dynamic Range.......................................................................................................1-45  
1.36 Characteristics Curve ..............................................................................................1-45  
1.37 Antenna Speed........................................................................................................1-46  
1.38 Waypoint Marker .....................................................................................................1-46  
1.39 Alarm Message Display...........................................................................................1-47  
1.40 Echo Area................................................................................................................1-49  
1.41 Customizing (Initial Menu).......................................................................................1-50  
1.42 Sector Blank ............................................................................................................1-52  
1.43 GPS Buoy................................................................................................................1-54  
2. RADAR OBSERVATION ....................................................................2-1  
2.1 General......................................................................................................................2-1  
2.2 False Echoes.............................................................................................................2-3  
2.3 SART (Search and Rescue Transponder).................................................................2-5  
v
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TABLE OF CONTENTS  
2.4 RACON .....................................................................................................................2-6  
3. ARP OPERATION .............................................................................. 3-1  
3.1 Usage Precautions....................................................................................................3-1  
3.2 Controls for Use with ARP ........................................................................................3-2  
3.3 ARP Display On/Off ..................................................................................................3-2  
3.4 Acquiring and Tracking Targets ................................................................................3-3  
3.5 Terminating Tracking of ARP Targets.......................................................................3-4  
3.6 Vector Attributes........................................................................................................3-5  
3.7 History Display (target past position) ........................................................................3-6  
3.8 ARP Target Data.......................................................................................................3-7  
3.9 CPA/TCPA Alarm......................................................................................................3-8  
3.10 Proximity Alarm .........................................................................................................3-9  
3.11 Lost Target ................................................................................................................3-9  
3.12 Symbol Color...........................................................................................................3-10  
4. AIS OPERATION................................................................................ 4-1  
4.1 Controls for Use with AIS .........................................................................................4-1  
4.2 Turning the AIS Display On or Off.............................................................................4-1  
4.3 AIS Symbols..............................................................................................................4-2  
4.4 Activating, Sleeping Targets .....................................................................................4-2  
4.5 Displaying AIS Target Data.......................................................................................4-3  
4.6 Display Range...........................................................................................................4-4  
4.7 Sorting Targets..........................................................................................................4-4  
4.8 Displaying Targets Within a Specific Sector .............................................................4-5  
4.9 Number of Targets to Display ...................................................................................4-5  
4.10 Vector Attributes........................................................................................................4-6  
4.11 History Display (target past position) ........................................................................4-7  
4.12 CPA/TCPA Alarm......................................................................................................4-8  
4.13 Proximity Alarm .........................................................................................................4-9  
4.14 Lost Target ................................................................................................................4-9  
4.15 Symbol Color...........................................................................................................4-10  
5. GPS OPERATION .............................................................................. 5-1  
5.1 Navigator Type..........................................................................................................5-1  
5.2 Datum........................................................................................................................5-2  
5.3 WAAS Setup .............................................................................................................5-2  
5.4 Satellite Monitor ........................................................................................................5-3  
5.5 Displaying Type 16 Message ....................................................................................5-4  
5.6 GPS Sensor Installation Position Offset....................................................................5-5  
5.7 Cold Start ..................................................................................................................5-6  
6. MAINTENANCE & TROUBLESHOOTING ........................................ 6-1  
6.1 Preventive Maintenance............................................................................................6-2  
6.2 Fuse Replacement....................................................................................................6-3  
6.3 Magnetron Life ..........................................................................................................6-3  
6.4 LCD Backlight Life.....................................................................................................6-3  
6.5 Trackball Maintenance ..............................................................................................6-4  
6.6 Simple Troubleshooting ............................................................................................6-5  
6.7 Advanced-level Troubleshooting...............................................................................6-6  
6.8 Diagnostic Test .........................................................................................................6-8  
6.9 LCD Test................................................................................................................. 6-10  
6.10 GPS Test................................................................................................................. 6-10  
APPENDIX............................................................................................. AP-1  
SPECIFICATIONS................................................................................. SP-1  
INDEX......................................................................................................IN-1  
vi  
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FOREWORD  
A Word to the Owner of the FR-8xx2 Marine Radar  
FURUNO Electric Company thanks you for purchasing the FR-8xx2 series Color LCD Marine  
Radar. We are confident you will discover why the FURUNO name has become synonymous with  
quality and reliability.  
For over 50 years FURUNO Electric Company has enjoyed an enviable reputation for quality and  
reliability throughout the world. This dedication to excellence is furthered by our extensive global  
network of agents and dealers.  
Your equipment is designed and constructed to meet the rigorous demands of the marine envi-  
ronment. However, no machine can perform its intended function unless properly installed and  
maintained. Please carefully read and follow the operation and maintenance procedures set forth  
in this manual.  
We would appreciate feedback from you, the end-user, about whether we are achieving our pur-  
poses.  
Thank you for considering and purchasing FURUNO.  
Features  
The FR-8xx2 series display radar targets on a bright 12.1" color LCD. Operation is simplified with  
the combination of discrete keys and trackball.  
The main features are  
• The FR-8xx2 series consists of the following models:  
Model, output, range, antenna  
Radar Antenna,  
Radiator Length  
Model  
FR-8252  
Output  
Range  
25 kW  
12 kW  
6 kW  
96 nm  
72 nm  
72 nm  
XN-12A (4ft) or  
XN-13A (6 ft)  
FR-8122  
FR-8062  
XN-12A (4ft) or  
XN-13A (6 ft)  
XN-12A (4ft) or  
XN-13A (6 ft)  
• Bright 12.1" LCD visible even under direct sunlight  
• User-friendly operation with combination of discrete keys and trackball  
• Antenna speed may be automatically selected according to range (48 rpm motor only)  
• Built in Auto Plotter (ARP-11) optionally available  
• AIS data shown with connection of FURUNO AIS Transponder FA-150  
• User programmable function keys  
• One touch setup of major controls with custom setup feature  
• Echoes in yellow or green, or colors of red, yellow or green in order of descending strength  
ix  
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FOREWORD  
Notice  
• This manual is intended for use by native speakers of English.  
• No part of this manual may be copied or reproduced without written permission.  
• If this manual is lost or worn, contact your dealer about replacement.  
• The contents of this manual and equipment specifications are subject to change without  
notice.  
• The example screens (or illustrations) shown in this manual may not match the screens you  
see on your display. The screen you see depends on your system configuration and equip-  
ment settings.  
• FURUNO will assume no responsibility for the damage caused by improper use or modifica-  
tion of the equipment by an unauthorized dealer or a third party.  
• Store this manual in a convenient place for future reference.  
x
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SYSTEM CONFIGURATION  
FR-8252  
ANTENNA UNIT  
RSB-0073-087-XN12A/XN13A  
POWER SUPPLY UNIT  
PSU-008  
Auto Plotter  
ARP-11  
DISPLAY UNIT  
RDP-150  
(built in display unit)  
Gyrocompass  
RGB  
Gyro  
Converter  
AD-100  
Rectifier  
RU-3423  
100/110/  
115/220/  
230 VAC, 1  
Heading Sensor  
PG-1000  
φ
12-24 VDC  
NMEA  
Device  
Remote  
Display  
NMEA  
Device  
Commerical Monitor*  
(SVGA or better)  
External  
Buzzer  
OP03-136  
OR  
Remote  
Controller  
RCU-019  
Category of units  
Antenna unit: Exposed to weather  
All other units: Protected from weather  
: Optional equipment  
xi  
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SYSTEM CONFIGURATION  
FR-8122, FR-8062  
ANTENNA UNIT  
RSB-0070-085-XN12A: FR-8062  
RSB-0073-085-XN12A/XN13A: FR-8062  
RSB-0073-086-XN12A/XN13A: FR-8122  
Auto Plotter  
ARP-11  
DISPLAY UNIT  
RDP-150  
(built in  
display unit)  
Gyrocompass  
RGB  
Gyro  
Converter  
AD-100  
Rectifier  
RU-3423  
100/110/  
115/220/  
230 VAC, 1  
Heading Sensor  
PG-1000  
φ
12-24 VDC  
NMEA  
Device  
Remote  
Display  
NMEA  
Device  
Commerical Monitor*  
(SVGA or better)  
External  
Buzzer  
OP03-136  
OR  
Remote  
Controller  
RCU-019  
Category of units  
Antenna unit: Exposed to weather  
All other units: Protected from weather  
: Optional equipment  
xii  
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1. OPERATIONAL OVERVIEW  
1.1  
Controls  
1.1.1  
Display unit  
This radar is operated with the controls of the display unit (and the remote controller), which  
includes 18 keys that are labeled with their functions, three knob controls and a trackball. When  
you correctly execute an operation, the unit generates a beep. Invalid operation causes the unit  
to emit several beeps.  
BRILL  
No.  
Control  
Description  
GAIN  
STBY  
TX  
PUSH AUTO/MAN  
A/C SEA  
MODE  
1
Momentary press: Turns power on; adjusts  
brilliance.  
Long press: Turns power off.  
/
BRILL  
PUSH AUTO/MAN  
A/C RAIN  
CUSTOM  
PUSH AUTO/MAN  
F1  
+
RANGE  
-
F2  
OFF  
CENTER  
ZOOM  
TARGET  
ALARM  
TRAILS  
VRM  
EBL  
Note: Hereafter this control is referred to as  
“POWER/BRILL”.  
MENU  
ENTER  
TLL  
CANCEL  
HL OFF  
2
STBY/TX  
Transmits radar pulses and places radar in  
stand-by alternately.  
3
4
MODE  
Chooses presentation mode.  
1
BRILL  
CUSTOM  
Presets radar controls for one-touch set up of  
radar.  
GAIN  
STBY  
TX  
5
6
7
RANGE  
ZOOM  
Chooses radar range.  
2
3
4
11  
12  
PUSH AUTO/MAN  
A/C SEA  
Zooms chosen location (or target).  
MODE  
TARGET  
ALARM  
Sets target alarm, which watches for targets  
entering (or exiting) an alarm zone.  
PUSH AUTO/MAN  
A/C RAIN  
8
9
EBL  
Measures bearing to a target.  
Opens/closes menu.  
CUSTOM  
MENU  
ENTER  
13  
14  
10  
Saves chosen menu option; acquires ARP tar-  
get; chooses ARP or AIS target to display its  
data.  
PUSH AUTO/MAN  
+
RANGE  
-
F1  
5
11  
12  
13  
GAIN  
Adjusts the sensitivity of the radar receiver.  
Suppress sea clutter.  
F2  
15  
16  
17  
A/C SEA  
A/C RAIN  
OFF  
CENTER  
6
7
8
ZOOM  
Suppresses rain clutter.  
14, 15 F1, F2  
Function keys providing instant call up of  
desired function.  
TARGET  
ALARM  
TRAILS  
VRM  
16  
17  
18  
19  
OFF CENTER Shifts display.  
EBL  
18  
19  
20  
TRAILS  
VRM  
Plots radar echo movement.  
Measures range to a target.  
MENU  
ENTER  
9
TLL  
CANCEL  
HL OFF  
TLL  
Outputs latitude and longitude position of a tar-  
get to a navigation plotter or inscribes mark at  
cursor location, or both the above.  
10  
20  
21  
CANCEL/  
HL OFF  
Temporarily erases heading line; cancels last  
entry in menu operation; cancels tracking of  
ARP target; removes data of selected ARP or  
AIS target from data box; goes back one layer  
in multilayer menu.  
21  
Trackball  
Chooses menu items and options; shifts  
cursor.  
1-1  
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1. OPERATIONAL OVERVIEW  
1.1.2  
Remote controller  
The optional remote controller provides armchair control over transmit, standby, range and display  
offcentering (30% in stern direction).  
OFF  
CENTER  
STBY  
TX  
Offcenters display.  
Toggles STBY/TX.  
Chooses range.  
RANGE  
Remote controller  
1-2  
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1. OPERATIONAL OVERVIEW  
1.2 Turning the Radar On/Off, Transmitting  
Press the POWER/BRILL key at the top of the control panel to turn the radar on, and the lamp to  
its left lights. To turn the radar off, press and hold down the key until the screen turns black.  
At power-up, the start-up screen appears, showing the model name, program number and the  
results of the ROM and RAM check, OK or NG (No Good). If an NG appears, try pressing any key  
other than the power key to proceed. If normal operation is not possible, contact your dealer for  
advice.  
12.1" COLOR LCD  
MARINE RADAR  
F R - 8 x x 2  
Model name appears here.  
ROM: OK  
RAM: OK  
Program No. 0359226-xx.xx  
FURUNO ELECTRIC CO., LTD.  
Start-up screen  
After the tests are completed, the bearing scale and a digital timer appear. The digital timer counts  
down the time remaining to warm up the magnetron, which transmits the radar pulses. This warm-  
up takes 180 sec. (FR-8252) or 90 sec. (FR-8062, FR-8122).  
After the timer has counted down to 0:00, the STBY screen appears, the appearance of which you  
may choose according to your needs. (For further details, see paragraph 1.41.2.) The radar is now  
ready to transmit radar pulses. Press the STBY/TX key to transmit radar pulses.  
The STBY/TX key toggles between stand-by and transmit status. The antenna rotates in transmit  
condition and is stopped in standby. Because the magnetron ages with use it is highly recom-  
mended to set the radar in standby when it will not be required for an extended period of time, to  
extend the life of the magnetron.  
Quick start  
Provided that the radar was once in use with the transmitter tube (magnetron) still warm, you can  
get the radar into TRANSMIT condition without the warm-up. If the POWER/BRILL key was  
turned off by mistake or the like and you wish to restart the radar promptly, turn on the POWER/  
BRILL key not later than 10 seconds after power-off. This feature is not available with the  
FR-8252.  
1-3  
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1. OPERATIONAL OVERVIEW  
1.3  
Display Indications  
Presentation mode  
Auto adjustment of  
rain and sea clutters  
Range ring interval  
Offcenter  
North Marker  
Heading  
(M: Manual, A: Auto)  
0.25  
Range  
TUNE AUTO  
GAIN AUTO  
SEA AUTO  
RAIN AUTO  
359.9°  
M
0.75  
NM  
TUNE indicator  
GAIN indicator  
A/C SEA indicator  
A/C RAIN indicator  
2nd echo rejector  
Zoom  
SP  
Pulse length  
OFFCENTER(M)  
H UP  
Custom setting name  
Echo stretch (ES),  
Echo averaging (EAV)  
HARBOR A/C AUTO  
ES 1  
NR LOW  
IR LOW  
EAV1  
2ND ECHO  
ZOOM  
WATCH  
Noise rejector (NR),  
Interference rejector (IR)  
WATCHMAN  
Target alarm zone 1  
Origin mark  
Dashed: relative  
Solid: true  
No. 2 EBL  
Heading line  
Bearing scale  
No. 2 VRM  
Range ring  
No. 1 VRM  
No. 1 EBL  
Zoom cursor  
Cursor  
Zoom window  
+
Target alarm zone 2  
Trail reference  
Trail time  
TRAILS (T)  
15S  
ALARM1_IN  
Target alarm  
indications  
ALARM2_OUT  
EBL1>270.0°R  
<
No.1 EBL bearing  
No. 2 EBL bearing  
VRM1>0.425<NM  
VRM2 0.220NM  
No. 1 VRM range  
No. 2 VRM range  
+ 242.8°R 2.782 NM  
EBL2 45.0°R  
WAY  
POINT 202.4  
14.90 NM  
OWN LAT: 34  
SHIP LON: 135  
°
°
56.123 N CURSOR LAT: 34  
34.567 E LON: 135  
TTG: 01:00  
°
°
56.123 N  
34.567 E  
TEMP 12.3°C  
°
Cursor data  
TTG: 00:20  
SPEED 12.3 kt  
DEPTH 56.7 m  
(Range and bearing or L/L position)  
Nav data: Appears at screen bottom when Data Box in the  
Display sub menu is set to "Nav" or "All". Appropriate sensors  
required to display nav data.  
Display indications  
The screen configuration, chosen  
during the installation, is available  
in three types, “Sea”, “River” and  
“IEC”, and the default configuration  
is “Sea”. The majority of the  
000  
030  
330  
Note  
300  
060  
090  
270  
descriptions in this manual use the  
“Sea” configuration. The major dif-  
ference between the Sea, River  
and IEC configurations is the effec-  
tive display area - it is elliptical on  
the Sea and River types and cir-  
cular on the IEC type.  
240  
120  
210  
150  
180  
Bearing scale for Sea and  
River configurations  
Bearing scale for  
IEC configuration  
1-4  
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1. OPERATIONAL OVERVIEW  
1.4 Adjusting Display Brilliance, Panel Dimmer  
The display brilliance and panel dimmer may be adjusted as follows:  
1. Press the POWER/BRILL key momentarily to show the Brill/Panel dialog box.  
Brill/Panel  
W Min Max X  
Brill (1 - 15) 15  
Panel (1 - 15) 15  
[ENTER]: Select  
[CANCEL/HL OFF]: Close  
Brill/Panel dialog box  
2. Press the ENTER key to choose Brill or Panel, whichever you wish to adjust.  
3. Roll the trackball rightward or leftward to adjust. (For brilliance, you may also use the POWER/  
BRILL key.)  
4. Press the CANCEL/HL OFF key to close the window.  
1.5 Menu Overview  
Less-often used functions are controlled through the menu, which consists of 15 menus and 5 sub  
menus. Below is the basic procedure for menu operation.  
1. Press the MENU key to display the menu.  
Menu  
Currently selected menu  
Title bar*4  
Cursor*4  
Echo  
Menu  
Brill/Color  
Display  
Echo  
Target Trails  
Mark  
Auto Gain  
Auto Sea  
Auto Rain  
Pulse Length  
Echo Stretch  
:Moderate  
:Moderate  
:Moderate  
:Long  
:Off  
Custom 1  
Custom 2  
Custom 3  
Tuning  
Echo Average  
Noise Rejector  
Interference Rejector  
Auto Anti Clutter  
Display-Dynamic  
Display-Curve  
Antenna Speed  
2nd Echo Rejector  
:Off  
:Off  
:Med  
:Off  
:Normal  
:2  
:48rpm  
:Off  
Menu items  
and current  
settings  
GPS Buoy  
Target  
ARP*1  
AIS*2  
GPS*3  
[ENTER]: Enter [CANCEL/HL OFF]: Back  
[MENU]: Exit  
Arrow means  
sub menus  
present  
System  
Scroll bar  
(Indicates menus not currently shown in menu window.  
Black vertical line indicates location in menu.)  
1
Displayed if equipped with ARP Board.  
*
2
Displayed if radar is interfaced with AIS transponder.  
Dipslayed if radar is interfaced with GPS receiver.  
Title bar is currently controllable column is blue; selected cursor is  
yellow. Title bar of inactive column is gray.  
*
3
*
4
*
Menu  
2. Roll the trackball to choose a menu or sub menu. As you roll the trackball, the yellow (highlight)  
cursor in the Menu column indicates the menu currently selected and the menu items change  
according to the menu selected.  
1-5  
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1. OPERATIONAL OVERVIEW  
Menu description  
Brill/Color: Choose colors; adjust range ring brilliance.  
DIsplay: Control display functions.  
Echo: Adjust radar echo.  
Target Trails: Process target trails.  
Mark: Process markers such as VRM and EBL.  
Custom 1-Custom 3: One-touch set up for given navigation situation.  
Tuning: Adjust radar tuning.  
GPS Buoy: Set up GPS buoy display.  
Target: Set up ARP and AIS targets.  
ARP: Set up ARP display.  
AIS: Set up AIS display.  
GPS: Set up FURUNO GPS receiver interfaced with this radar.  
System:  
Initial: Initial settings.  
Factory: System diagnostic and LCD test.  
Installation: Items for installation. Not accessible by user.  
Sector Blank 1, Sector Blank 2: Set up for preventing transmission in a certain area.  
3. Press the ENTER key to switch control to the menu items column. At this time the cursor in the  
menu column turns gray and the cursor in the menu items column is yellow, indicating that con-  
trol is now with the menu items column.  
To switch control between the menu column and menu items column, use the CANCEL/HL  
OFF key. The color of the title bar of the active column is blue and the color of the title bar of  
the inactive column is gray.  
4. Roll the trackball to choose the menu item desired and press the ENTER key. A window with  
options for the corresponding menu item appears. For example, the window below shows the  
options for Color in the Target Trails menu.  
Green  
Red  
Blue  
White  
Black  
5. Roll the trackball upward or downward to choose appropriate option.  
6. Press the ENTER key to save your selection. To close the window without saving, press the  
CANCEL/HL OFF key (instead of the ENTER key).  
7. Press the MENU key to close the menu.  
The menus on the IEC-type radar close automatically when there is no menu opera-  
Note  
tion for 10 seconds, as per IEC regulations. The following menus and screens how-  
ever are exempt from this rule: Alarm message, GPS self test, Satellite monitor,  
Diagnostic, LCD pattern, tuning initial adjust and auto installation setup.  
Menus do not close automatically in the “River” or “Sea” configuration.  
1-6  
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1. OPERATIONAL OVERVIEW  
1.6  
Tuning  
The radar receiver can be tuned automatically or manually, and the default tuning method is auto-  
matic. If you require manual tuning, do the following:  
1. Use the RANGE key to choose the 48-mile range.  
2. Press the MENU key to display the main menu.  
3. Use the trackball to choose Tuning and press the ENTER key.  
Tuning  
Menu  
Brill/Color  
Display  
Echo  
Tuning Mode  
Manual Tuning  
:Auto  
:2048  
Target Trails  
Mark  
Custom 1  
Custom 2  
Custom 3  
Tuning  
GPS Buoy  
Target  
ARP  
AIS  
GPS  
System  
[ENTER]: Enter [CANCEL/HL OFF]: Back  
[MENU]: Exit  
4. Use the trackball to choose Tuning Mode and press the ENTER key.  
Auto  
Manual  
Tuning options  
5. Choose Manual and press the ENTER key.  
6. Choose Manual Tuning and push the ENTER key. The window shown below appears.  
2048  
(0-4095)  
7. Roll the trackball upward or downward to adjust the tuning, watching the tuning bar at the top  
right corner. The best tuning point is where the tuning bar swings maximum. The vertical bar  
on the tuning bar shows tuning control position; not the tuning condition.  
Tuning method (Manual)  
Tuning bar  
TUNE MAN  
GAIN AUTO  
SEA AUTO  
RAIN AUTO  
Tuning indicator  
8. Push the ENTER key.  
9. Press the MENU key to close the menu.  
1-7  
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1. OPERATIONAL OVERVIEW  
1.7  
Presentation Modes  
This radar has the following presentation modes:  
Relative Motion (RM)  
Head-up: Unstabilized display. Heading is at the top of the screen.  
Course-up: Compass-stabilized relative to ship's orientation. The bearing scale rotates to place  
ship’s heading (course set) at the screen top at the moment the course-up mode is selected.  
North-up: Compass-stabilized with reference to north. Bearing scale is fixed.  
True Motion (TM)  
North-up: Ground or sea stabilized with compass and speed inputs. Own ship moves on the dis-  
play. Landmasses and sea are fixed.  
1.7.1  
Choosing presentation mode  
Press the MODE key consecutively to choose presentation mode desired. The presentation mode  
in use appears at the top left corner on the screen.  
All modes except head-up require a heading signal, in AD-10 format or NMEA  
format. If the heading signal is lost, the mode is changed to head-up and the north  
Note  
marker disappears. Further, the heading readout shows XXX.X and the message  
“GYRO” (AD-10 format data) or “NMEA-HEAD” (NMEA format data) appears in the  
alarm message display. Restore gyro input and confirm bearing.  
1.7.2  
Description of presentation modes  
Head-up mode  
Heading Line  
North Marker  
The head-up mode is a display in which the line con-  
necting own ship and the top of the display indicates own  
ship's heading.  
The target pips are painted at their measured distances  
and in their directions relative to own ship's heading.  
Echoes (other than landmass) may be unstable if ship’s  
yawing and turning are severe.  
A short line on the bearing scale is the north marker, indi-  
cating heading sensor north.  
1-8  
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1. OPERATIONAL OVERVIEW  
Heading Line  
Course-up mode  
North Marker  
The course-up mode is an azimuth stabilized dis-  
play in which a line connecting the center with the  
top of the display indicates own ship's intended  
course (namely, own ship's previous heading just  
before this mode has been selected).  
Target pips are painted at their measured dis-  
tances and in their directions relative to the  
intended course, which is maintained at the 0-  
degree position. The heading line moves in accor-  
dance with ship's yawing and course change. This  
mode is useful to avoid smearing of picture during  
course change.  
North-up mode  
North Marker  
Heading Line  
The north-up mode paints target pips at their measured dis-  
tances and in their true (heading sensor) directions from own  
ship, north bearing maintained at the top of the screen. The  
heading line changes its direction according to the ship's  
heading.  
True motion mode  
Own ship and other moving objects move in accordance with  
their true courses and speed. In ground stabilized TM, all  
fixed targets, such as landmasses, appear as stationary  
echoes.  
North Marker  
Heading Line  
When own ship reaches a point corresponding to 75% of the  
radius of the display, own ship position is automatically reset  
to a point of 75% radius opposite to the extension of the  
heading line passing through the display center. You may  
also reset the own ship symbol manually by pressing the OFF  
CENTER key. The method of resetting is the same as men-  
tioned above.  
1-9  
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1. OPERATIONAL OVERVIEW  
Automatic resetting of own ship marker in true motion mode  
North  
marker  
Heading  
line  
(a) True motion  
is selected  
(b) Own ship has reached a  
point 75% of display radius  
(c) Own ship is automatically  
reset to 75% of radius  
1.8  
Choosing a Range Scale  
The selected range scale, range ring interval and pulse length are shown at the upper left corner  
on the screen. When a target of interest comes closer, reduce the range scale so that it appears  
in 50-90% of the display radius.  
Use the RANGE key to choose range desired. Hit the "+" part of the key to raise the range;  
the "-" part to lower the range.  
1-10  
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1. OPERATIONAL OVERVIEW  
1.9 Choosing a Pulse Length  
The pulse length in use appears at the top left position on the screen. Appropriate pulse lengths  
are preset to individual range scales and custom setups. If you are not satisfied with the pulse  
length setting on the 1.5 nm or 3 nm range, you may change it as below. Use a longer pulse when  
your objective is long range detection, a shorter pulse when resolution is important.  
1. Press the MENU key to open the menu.  
2. Use the trackball to choose the Echo menu and press the ENTER key.  
Echo  
Menu  
Brill/Color  
Display  
Echo  
Auto Gain  
Auto Sea  
Auto Rain  
:Moderate  
:Calm  
:Calm  
Target Trails  
Mark  
Pulse Length  
Echo Stretch  
:Short  
:1  
Custom 1  
Custom 2  
Custom 3  
Tuning  
GPS Buoy  
Target  
:Off  
:Off  
:Off  
:Off  
:Normal  
:1  
:48rpm  
:Off  
Echo Average  
Noise Rejector  
Interference Rejector  
Auto Anti Clutter  
DIsplay-Dynamic  
DIsplay-Curve  
Antenna Speed  
2nd Echo Rejector  
ARP  
AIS  
GPS  
System  
[ENTER]: Enter [CANCEL/HL OFF]: Back  
[MENU]: Exit  
3. Use the trackball to choose Pulse Length and press the ENTER key.  
Short  
Long  
4. Choose Short or Long as appropriate and press the ENTER key.  
5. Press the MENU key to close the menu.  
1-11  
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1. OPERATIONAL OVERVIEW  
1.10 Adjusting the Gain (sensitivity)  
The gain functions to adjust the receiver sensitivity for the best reception of signals of widely  
varying amplitudes.  
1.10.1 Choosing gain adjustment method  
Gain may be adjusted automatically or manually. Push the GAIN control to choose automatic or  
manual adjustment alternately. The adjustment method currently chosen is show at the top right  
corner of the screen. In the example below the gain adjustment method is “AUTO”.  
TUNE AUTO  
Gain adjustment method (AUTO)  
GAIN AUTO  
SEA AUTO  
RAIN AUTO  
Gain adjustment method indicator  
1.10.2 Setting automatic gain level  
1. Press the MENU key to open the menu.  
2. Choose the Echo menu and press the ENTER key.  
3. Choose Auto Gain and press the ENTER key.  
Rough  
Moderate  
Calm  
4. Choose the option which best matches current sea condition and press the ENTER key.  
5. Press the MENU key to close the menu. Gain is automatically adjusted according to the level  
selected.  
1.10.3 Manual gain adjustment  
Adjust the gain such that noise faintly appears over the entire screen. If the gain is too low weak  
echoes will not be displayed and if the gain is too high, weak echoes will be hidden in background  
noise.  
1. Push the GAIN control to show “GAIN MAN” as the gain adjustment method.  
2. Rotate the GAIN control to adjust the gain. Adjust the control so background noise is just visible  
on the screen.  
1-12  
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1. OPERATIONAL OVERVIEW  
1.11 Suppressing Sea Clutter  
Echoes from waves cover the central part of the display with random signals known as sea clutter.  
The higher the waves, and the higher the antenna above the water, the further the clutter will  
extend. When sea clutter masks the picture, use the A/C SEA control to suppress the clutter,  
either manually or automatically.  
1.11.1 Choosing sea clutter adjustment method  
Push the A/C SEA control to choose automatic or manual adjustment alternately. The adjustment  
method currently chosen is show at the top right corner of the screen. In the example below the  
sea clutter adjustment method is “AUTO”.  
TUNE AUTO  
GAIN AUTO  
A/C SEA adjustment method (AUTO)  
SEA AUTO  
RAIN AUTO  
A/C SEA indicator  
1.11.2 Setting automatic sea clutter suppression level  
1. Press the MENU key to open the menu.  
2. Choose the Echo menu and press the ENTER key.  
3. Choose Auto Sea and press the ENTER key.  
Rough  
Moderate  
Calm  
4. Choose the option which best matches current sea condition and press the ENTER key.  
5. Press the MENU key to close the menu. Sea clutter is automatically adjusted according to the  
level selected.  
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1. OPERATIONAL OVERVIEW  
1.11.3 Manual sea clutter adjustment  
1. Push the A/C SEA control to show “SEA MAN” as the A/C SEA adjustment method.  
2. Rotate the A/C SEA control to suppress sea clutter.  
The proper setting of the A/C SEA control is such that the clutter is broken up into small dots, and  
small targets become distinguishable. If the setting is set too low, targets will be hidden in the  
clutter, while if the setting is too high, both sea clutter and targets will disappear from the display.  
In most cases adjust the control until clutter has disappeared to leeward, but a little is still visible  
windward.  
Sea clutter at  
screen center  
A/C SEA control adjusted;  
sea clutter suppressed  
Appearance of sea clutter  
1.12 Suppressing Rain Clutter  
The vertical beamwidth of the antenna is designed to see surface targets even when the ship is  
rolling. However, by this design the unit will also detect rain clutter (rain, snow, or hail) in the same  
manner as normal targets.  
The A/C RAIN control adjusts the receiver sensitivity as the A/C SEA control does but rather in a  
longer time period (longer range). The higher the setting the greater the anti-clutter effect. When  
echoes from precipitation mask solid targets, adjust the control to split up these unwanted echoes  
into a speckled pattern, making recognition of solid targets easier.  
1.12.1 Choosing rain clutter adjustment method  
Rain clutter may be adjusted automatically or manually. Push the A/C RAIN control to choose  
automatic or manual adjustment alternately. The adjustment method currently chosen is show at  
the top right corner of the screen. In the example below the rain clutter adjustment method is  
“AUTO.”  
TUNE AUTO  
GAIN AUTO  
SEA AUTO  
RAIN AUTO  
A/C RAIN adjustment method (AUTO)  
A/C RAIN indicator  
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1. OPERATIONAL OVERVIEW  
1.12.2 Setting automatic rain clutter suppression level  
1. Press the MENU key to open the menu.  
2. Choose the Echo menu and press the ENTER key.  
3. Choose Auto Rain and press the ENTER key.  
Rough  
Moderate  
Calm  
4. Choose the option which best matches current sea condition and press the ENTER key.  
5. Press the MENU key to close the menu. Rain clutter is automatically adjusted according to the  
level selected.  
1.12.3 Manual rain clutter adjustment  
1. Push the A/C RAIN control to show “RAIN MAN” as the A/C RAIN adjustment method.  
2. Rotate the A/C RAIN control to suppress the rain clutter.  
Rain clutter at  
screen center  
A/C RAIN control  
adjusted  
Appearance of rain clutter  
1.13 Automatic Suppression of Sea and Rain Clutters  
If neither sea clutter or rain clutter are sufficiently suppressed in spite of adjustment of respective  
controls, turn on the automatic anti clutter feature to suppress them. A/C AUTO appears at the top  
left corner when this feature is turned on.  
1. Press the MENU key to open the menu.  
2. Choose the Echo menu and press the ENTER key.  
3. Choose Auto Anti Clutter and press the ENTER key.  
Off  
On  
4. Choose Off or On as appropriate and press the ENTER key.  
5. Press the MENU key to close the menu.  
1-15  
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1. OPERATIONAL OVERVIEW  
1.14 Cursor  
The cursor functions to find the range and bearing (default function) to a target or the latitude and  
longitude position of a target. Roll the trackball to position the cursor and read the cursor data at  
the screen bottom.  
0.5  
NM  
3
+
Cursor  
+ 110.1°R 2.525 NM  
Cursor data  
(latitutde and longitude  
or range and bearing)  
Cursor data  
Cursor data  
Cursor data can be shown as latitude and longitude or range and bearing from own ship to the  
cursor. Position and heading bearing signal are required.  
1. Press the MENU key to open the menu.  
2. Choose the Mark menu and press the ENTER key  
3. Choose Cursor Position and press the ENTER key.  
Rng/Brg  
Lat/Lon  
4. Choose Brg/Rng or Lat/Long as appropriate and press the ENTER key. (Note that cursor lati-  
tude and longitude position cannot be displayed when nav data is displayed.)  
5. Press the MENU key to close the menu.  
1-16  
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1. OPERATIONAL OVERVIEW  
1.15 Interference Rejector  
Mutual radar interference may occur in the vicinity of another shipborne radar operating in the  
same frequency band (9 GHz). It is seen on the screen as a number of bright spikes either in irreg-  
ular patterns or in the form of usually curved spoke-like dotted lines extending from the center to  
the edge of the picture. Activating the interference rejector circuit can reduce this type of interfer-  
ence.  
Interference  
1. Press the MENU key to open the menu.  
2. Choose the Echo menu and press the ENTER key.  
3. Choose Interference Rejector and press the ENTER key.  
Off  
Low  
Med  
High  
4. Choose Off, Low, Med or High as appropriate and press the ENTER key. High provides the  
highest degree of interference rejection.  
5. Press the MENU key to close the menu.  
Be sure to turn off the interference rejector when no interference exists, so as not to miss small  
targets.  
1-17  
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1. OPERATIONAL OVERVIEW  
1.16 Measuring the Range to a Target  
The range to a target may be measured three ways: with the fixed range rings, with the cursor (if  
set to measure range and bearing), and with the VRM.  
Use the fixed range rings to obtain a rough estimate of the range to a target. They are the concen-  
tric solid circles about own ship, or the sweep origin. The number of rings is automatically deter-  
mined by the selected range scale and their interval is displayed at the upper-left position of the  
screen. Count the number of rings between the center of the display and the target. Check the  
range ring interval and judge the distance of the echo from the inner edge of the nearest ring.  
1.16.1 Adjusting range ring brilliance  
1. Press the MENU key to open the menu.  
2. Choose the Brill/Color menu and press the ENTER key.  
Brill/Color  
Menu  
Brill/Color  
Display  
Echo  
Range Rings Brill  
Echo Color  
Display Color  
:High  
:Yellow  
:Night  
Target Trails  
Mark  
Background Color  
:Black/Green  
Custom 1  
Custom 2  
Custom 3  
Tuning  
GPS Buoy  
Target  
ARP  
AIS  
GPS  
System  
[ENTER]: Enter [CANCEL/HL OFF]: Back  
[MENU]: Exit  
3. Choose Range Rings Brill and press the ENTER key.  
Off  
Low  
Med  
High  
4. Choose appropriate brilliance and press the ENTER key.  
5. Press the MENU key to close the menu.  
1-18  
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1. OPERATIONAL OVERVIEW  
1.16.2 Measuring range by the variable range marker (VRM)  
There are two VRMs, No. 1 and No. 2, which appear as dashed rings so that you can discriminate  
them from the fixed range rings. The two VRMs can be distinguished from each other by different  
lengths of dashes.  
1. Press the VRM key to display either of the VRMs. Successively pressing the VRM key toggles  
the active VRM between No. 1 and No. 2. The currently active marker is enclosed with >.....<  
in the VRM indication box.  
2. Operate the Trackball to align the variable range marker with the inner edge of the target of  
interest and read its distance at the lower-right corner of the screen. Each VRM remains at the  
same geographical distance when you operate the RANGE key. This means that the apparent  
radius of the VRM ring changes in proportion to the selected range scale.  
3. You may “anchor” the VRM by choosing it and pressing the ENTER key.  
4. To erase a VRM, make it active and press the CANCEL/HL OFF key.  
Target  
+
No. 1  
VRM  
No. 2  
VRM  
VRM1>0.007NM<  
VRM2 0.140NM  
VRM  
+ 37.4°R 0.007 NM  
indications  
Measuring range and bearing between two targets with the EBL  
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1. OPERATIONAL OVERVIEW  
1.16.3 Choosing VRM unit  
The unit of measurement used by the VRM can be selected to nautical miles, kilometers, statute  
miles or kiloyard. Note that the cursor range unit is also changed when the VRM unit is changed.  
1. Press the MENU key to open the menu.  
2. Choose the Mark menu and press the ENTER key.  
3. Choose VRM Unit and press the ENTER key.  
nm  
km  
sm  
kyd  
4. Choose desired unit and press the ENTER key.  
5. Press the MENU key to close the menu.  
1.17 Measuring the Bearing to a Target  
Use the Electronic Bearing Lines (EBLs) to take bearings of targets. There are two EBLs, No. 1  
and No. 2. Each EBL is a straight dashed line extending out from the own ship position up to the  
circumference of the radar picture. The fine dashed line is the No. 1 EBL and the coarse dashed  
one is the No. 2 EBL.  
1.17.1 Measuring the bearing with an EBL  
1. Press the EBL key to display either of the EBLs. Successively pressing the EBL key toggles  
the active EBL between No. 1 and No. 2. The currently active marker is enclosed with >.....< in  
the EBL indication box.  
2. Operate the Trackball to bisect the target of interest with the EBL and read its bearing at the  
lower-left corner of the screen.  
3. You may “anchor” an EBL by choosing it and pressing the ENTER key.  
4. To erase an EBL, make it active and press the CANCEL/HL OFF key.  
+
No. 2  
EBL  
No. 1  
EBL  
EBL1>270.0°R  
EBL2 0.45.0°R  
<
EBL  
indications  
+ 45.0°R 0.338 NM  
How to measure the bearing to a target with the EBL  
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1. OPERATIONAL OVERVIEW  
1.17.2 EBL reference  
The EBL readout is affixed by "R" (relative) if it is relative to own ship's heading, "T" (true) if it is  
referenced to the north. You may choose relative or true in the head-up modes; in all other modes  
it is always TRUE. True bearing requires a heading sensor.  
1. Press the MENU key to open the menu.  
2. Choose the Mark menu and press the ENTER key.  
3. Choose EBL Reference and press the ENTER key.  
Relative  
True  
4. Choose Relative or True as appropriate and press the ENTER key.  
5. Press the MENU key to close the menu.  
1.18 Measuring the Range and Bearing Between Two  
Targets  
You may shift the origin of the EBL to measure the range and bearing between two targets.  
1. Press the EBL key to choose the  
No. 2  
EBL  
bearing indication of No. 1 EBL or No.  
2 EBL (whichever you want to use).  
(The currently active marker is  
enclosed with >.....<).  
No. 1  
EBL  
No. 1  
VRM  
+
Tgt B  
No. 2  
VRM  
Tgt D  
Tgt A  
+
2. Place the cursor on target A.  
EBL origin  
Tgt C  
3. Press the OFFCENTER key to shift  
the EBL origin to the location chosen  
at step 2. Use the trackball to bisect  
target B with the EBL.  
4. Use the VRM key to display the VRM  
having the same number as the EBL  
activated at step 1.  
5. Roll the trackball to set the VRM on  
the inner edge of target B.  
VRM1  
>0.500NM<  
EBL1  
>140.0  
°
R<  
0.980NM  
VRM2  
335.2  
°
R
EBL2  
6. Read the bearing and range indica-  
tions at the bottom of the screen.  
Range/bearing  
between targets A and B  
Range/bearing  
between targets C and D  
To return the origin of an EBL to the  
screen center, choose appropriate  
EBL with the EBL key, press the OFF-  
CENTER key followed by the ENTER  
key. Pressing the OFFCENTER key  
alone places the EBL origin at the  
screen center and cursor location alter-  
nately.  
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1. OPERATIONAL OVERVIEW  
1.19 Target Alarm  
The target alarm serves to alert the navigator to  
targets (ships, landmasses, etc.) entering a set  
area, with audio and visual alarms.  
CAUTION  
The alarm should not be relied upon as  
the sole means for detecting possible  
collision situations.  
The alarm may be set to sound against targets  
entering or exiting the zone. See paragraph 1.19.3.  
A/C SEA, A/C RAIN and GAIN controls  
should be properly adjusted to be sure  
the alarm system does not overlook  
target echoes.  
1.19.1 Setting a target alarm  
The procedure which follows shows you how to set  
a target alarm, using the illustration below as an  
example.  
1. Press the TARGET ALARM key to activate ALARM 1 or ALARM 2 as appropriate.  
2. Use the trackball to drag the cursor to the location “A” and press the ENTER key.  
3. Drag the cursor to the location “B” and press the ENTER key.  
0.5  
NM  
Target alarm zone 1  
(Length of dash  
3
and interval longer  
A
+
B
on alarm zone 2)  
Cursor  
+
ALARM1_IN  
Alarm status  
+ 110.1°R 2.525 NM  
How to set a target alarm zone  
•If you wish to create a target alarm zone having a 360-degree coverage around own  
ship, set point "B" in almost the same direction as point "A."  
Note  
•When the target alarm zone is not within the range in use, the indication OUTRNG  
replaces ALARM1(or 2)_IN(or OUT) in the alarm status area. In this case choose a  
range which will display the target alarm zone.  
1.19.2 Silencing the audio alarm  
A target in the target alarm zone produces both visual (flashing) and audio (beep) alarms. To  
silence the audio alarm, press any key. This will deactivate the audio alarm but will not stop the  
flashing of the offending target.  
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1. OPERATIONAL OVERVIEW  
1.19.3 Choosing alarm type  
As noted earlier the target alarm may be set sound against targets entering or exiting the alarm.  
Choose desired type as below.  
Inward target alarm  
Outward target alarm  
In and Out alarms  
1. Press the MENU key to shown the menu.  
2. Choose the Mark menu and press the ENTER key.  
3. Choose Target Alarm 1 Mode or Target Alarm 2 Mode as appropriate and press the ENTER  
key.  
In  
Out  
4. Choose “In” to get the alarm on targets entering a target alarm zone or “Out” to alert you to tar-  
gets exiting a target alarm zone.  
5. Press the ENTER key followed by the MENU key.  
1.19.4 Temporarily deactivating a target alarm  
You may temporarily deactivate a target alarm when its use is not immediately required. The alarm  
zone remains on the screen, however any targets entering (or exiting) it will not trigger the audio  
and visual alarms.  
1. Press the TARGET ALARM key to choose the ALARM1 or ALARM2 indication at the bottom  
right corner on the screen. The selected indication is circumscribed with a rectangle.  
2. Press the CANCEL/HL OFF key. The alarm indication now shows ALARM1(or 2)_ACK.  
To reactivate a temporarily deactivated target alarm, press the ENTER key with the alarm  
zone displayed on the screen. The alarm indication then changes to ALARM1(or 2)_IN(or  
OUT).  
1.19.5 Deactivating a target alarm  
1. Press the TARGET ALARM key to choose ALARM1 or ALARM2 indication at the bottom right  
corner on the screen. The selected indication is circumscribed with a rectangle.  
2. Press the CANCEL/HL OFF key.  
3. Press the TARGET ALARM key again, and a dashed rectangle circumscribes the alarm indi-  
cation which now reads ALARM1(or 2)_ACK.  
4. Press the CANCEL/HL OFF key again. The target alarm zone and the alarm indication are  
erased from the screen.  
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1. OPERATIONAL OVERVIEW  
1.19.6 Choosing target strength which triggers target alarm  
You may choose the target strength level which triggers the alarm as follows:  
1. Press the MENU key to open the menu.  
2. Choose the Initial sub menu from the System menu and the press the ENTER key.  
3. Choose Alarm Level and press the ENTER key.  
Low  
Med  
High  
4. Choose the echo strength level which you want to trigger the target alarm.  
5. Press the ENTER key.  
6. Press the MENU key to close the menu.  
1.20 Off Centering the Display  
Own ship position, or sweep origin, can be displaced to expand the view field without switching to  
a larger range scale.  
The display may be off centered manually, or automatically according to ship’s speed. Press the  
OFF CENTER key successively to choose desired off centering method or turn off centering, in  
the sequence of manual, automatic, off. OFF CENTER(M) or OFFCENTER(A) appears at the top  
left corner on the display when off centering is enabled. Note that off center is not available on the  
96 nm range scale.  
1.20.1 Automatic off center  
The amount of automatic shift is calculated according to ship's speed, and the amount is limited  
to 75% of the range in use. The formula for calculating automatic shift is shown below.  
Ship's speed  
X 0.75 = Amount of shift(%)  
Shift speed setting  
For example, if you set the shift speed setting for 15 knots and the ship is running at 10 knots the  
amount of shift will be 50% of the effective display area.  
Choosing speed to use  
1. Press the MENU key to open the menu.  
2. Choose the Initial sub menu from the System menu and press the ENTER key.  
3. Choose Shift Speed and press the ENTER key.  
15kt  
(1kt-99kt)  
4. Choose the speed to use and press the ENTER key.  
5. Press the MENU key to close the menu.  
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1. OPERATIONAL OVERVIEW  
Activating automatic off center  
Press the OFF CENTER key to display OFF CENTER (A) at the top of the screen. Own ship posi-  
tion is placed at stern position. To cancel automatic shift press the key again.  
1.20.2 Manual off center  
The own ship position may be shifted to the cursor position on any mode, within 75% of the effec-  
tive display area.  
1. Place the cursor where you want locate to locate sweep origin.  
2. Press the OFF CENTER key to show OFF CENTER (M) at the top of the screen.  
3. To cancel shift, press the OFF CENTER key again.  
1.21 Zoom  
The zoom function enlarges an area of interest as large as twice the normal viewing size, in the  
zoom window. You choose the target of interest to zoom with the zoom cursor and that target is  
zoomed in the zoom window.  
Three types of zoom are available: Relative, True and Target.  
Relative: The zoom cursor moves relative to own ship.  
True:  
The zoom cursor is fixed at set geographical position.  
Target: The zoom cursor is fixed to the zoomed AIS or ARP target.  
1.21.1 How to zoom  
1. Press the ZOOM key to turn on the zoom feature.  
ZOOM appears at the top right hand corner of the screen and the zoom window and zoom  
cursor in the effective display area. The zoom cursor is a dashed line square in case of true or  
relative zoom mode or a solid line square in case of target zoom mode. The location of the  
zoom window depends on the location of the zoom cursor. If the zoom cursor is on the left-half  
of the screen, the zoom window is located at the right side of the screen and vice versa.  
0.5  
NM  
3
ZOOM  
Zoom ON  
(Dashed line  
in case of True  
or Relative mode)  
Zoom cursor  
(Dashed line  
in relative or  
true mode)  
+
Zoom  
window  
+ 180.1°R 2.121 NM  
Zoom  
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1. OPERATIONAL OVERVIEW  
2. Do one of the following depending on the zoom mode in use.  
Relative or true zoom mode  
1. Use the trackball to place the cursor where you want to zoom and press the ENTER key. The  
zoom cursor is shown with solid lines and is fixed at the location chosen. Each press of the  
ZOOM key enables or disables the zoom cursor. The zoom cursor is shown with dashed lines  
when it is active and solid lines when it is inactive.  
2. To quit zoom, press the ZOOM key to show the zoom cursor with dashed lines and press the  
CANCEL/HL OFF key.  
Target zoom mode  
The zoom cursor is interlinked with zoomed ARP or AIS target. The zoomed ARP or AIS target  
corresponds to the data last-displayed in the data box at the bottom of the display. To quit target  
zoom, press the ZOOM key again.  
If neither ARP nor AIS target exists, the message NO TARGET appears. Press any  
key to erase the message.  
Note  
1.21.2 Zoom mode  
You may choose the zoom mode from among Relative, True or Target.  
1. Press the MENU key to open the menu.  
2. Choose the Display menu and press the ENTER key.  
3. Choose Zoom Mode and press the ENTER key.  
Relative  
True  
Target  
4. Choose the appropriate option and press the ENTER key.  
5. Press the MENU key to close the menu.  
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1. OPERATIONAL OVERVIEW  
1.22 Echo Stretch  
The echo stretch feature enlarges targets in the range and bearing directions to make them easier  
to see, and is available on any range. There are three levels of echo stretch as shown in the table  
below.  
Echo stretch settings  
ES  
Setting  
Range  
Bearing  
1
Stretched to two dots  
An echo is stretched to three dots if its size is  
less than three dots. If its size is larger than  
three dots it is not stretched.  
2
3
Stretched to three dots  
Stretched to three dots  
An echo is stretched to four dots if its size is  
less than four dots. If its size is larger than four  
dots it is not stretched.  
An echo is stretched toy five dots if its size is  
less than five dots. If its size is larger than five  
dots it is not stretched.  
The echo stretch magnifies not only small target pips but also returns (clutter) from  
sea surface, rain and radar interference. For this reason, make sure those types of  
interference have been sufficiently suppressed before activating the echo stretch.  
Note  
1. Press the MENU key to open the menu.  
2. Choose the Echo menu and press the ENTER key.  
3. Choose Echo Stretch and press the ENTER key.  
Off  
1
2
3
4. Choose the appropriate echo stretch option and press the ENTER key.  
5. Press the MENU key to close the menu.  
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1. OPERATIONAL OVERVIEW  
1.23 Echo Averaging  
To distinguish real target echoes from sea clutter, echoes are averaged over successive picture  
frames. If an echo is solid and stable, it is presented in its normal intensity. Sea clutter is averaged  
over successive scans resulting in reduced brilliance, making it easier to discriminate real targets  
from sea clutter.  
•Do not use the echo average function under heavy pitching and rolling; loss of target  
detection can result.  
Note  
•This feature requires a heading signal. When the signal becomes lost, echo average  
is automatically disabled.  
To properly use the echo average function, it is recommended to first suppress sea clutter with  
the A/C SEA control. Then, do as follows:  
1. Press the MENU key to open the menu.  
2. Choose the Echo menu and press the ENTER key.  
3. Choose Echo Average and press the ENTER key.  
Off  
1
2
3
4. Choose the appropriate echo averaging option and press the ENTER key.  
Off: Disable echo average.  
1: Distinguish targets from sea clutter and suppress brilliance of unstable echoes.  
2: Effective against sea clutter which cannot be reduced with setting 1.  
3: Stably display distant, unstable targets.  
5. Press the MENU key to close the menu. The chosen echo average (EAV1, EAV2 or EAV3)  
appears at the top left corner of the display.  
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1. OPERATIONAL OVERVIEW  
1.24 Target Trails  
The trails of the radar targets may be displayed in the form of synthetic afterglow. Target trails are  
chosen either relative or true. True motion trails require a heading bearing signal and position  
data.  
1.24.1 Starting, stopping trails  
1. Press the TRAILS key to start trails and choose trail time. The chosen time, along with trail  
mode, is shown at the bottom left corner as shown in the figure below. Trail time is available  
among 15 s, 30 s, 1 min., 3 min., 6 min., 15 min., and 30 min., and CONTINUOUS. (If 12 H or  
24 is selected for Length on the Target Trails menu, one of those times plus CONTINUOUS  
are the choices.)  
Trail Mode (T, True, R, Relative)  
Trail Time  
TRAILS (T)  
15S  
Trail indications  
2. To change trail time, press the TRAILS key to choose desired trail time. The longer the trail  
time, the longer the trail itself. The trial time selectable with the TRAILS key changes according  
to trail length setting on the menu. For further details, see paragraph 1.24.10.  
•To erase trails, press and hold down the TRAILS key until a beep sounds. Alterna-  
tively, execute All Cancel on the Trails menu.  
Note  
•To disable trails, press and hold down the TRAILS key several times until the trail  
indications and trails are erased from the display.  
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1. OPERATIONAL OVERVIEW  
1.24.2 Trail mode  
You may display echo trails in true or relative motion. Relative trails show relative movements  
between targets and own ship. True motion trails present true target movements in accordance  
with their over-the-ground speeds and course, and require a gyrocompass signal and own ship  
speed input.  
(a) True target trails  
(No smearing of  
(b) Relative target trails  
(Targets moving relative  
to own ship)  
stationary targets)  
To choose trail mode, do the following:  
1. Press the MENU key to open the menu.  
2. Choose the Target Trails menu and press the ENTER key.  
Target Trails  
Menu  
Brill/Color  
Display  
Echo  
Target Trails  
Mark  
Custom 1  
Custom 2  
Custom 3  
Tuning  
GPS Buoy  
Target  
Gradation  
Color  
Mode  
Level  
Length  
Time  
:Multi  
:Green  
:Relative  
:2  
:24H  
:12h:00m  
:Off  
:Off  
:Off  
:Off  
Copy  
Restart  
Narrow  
Own Ship  
All Cancel  
ARP  
AIS  
GPS  
System  
[ENTER]: Enter [CANCEL/HL OFF]: Back  
[MENU]: Exit  
3. Choose Mode and press the ENTER key.  
Relative  
True  
4. Choose the appropriate mode and press the ENTER key.  
5. Press the MENU key to close the menu.  
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1. OPERATIONAL OVERVIEW  
1.24.3 Trail gradation  
Trails may be shown in single or multiple gradation. Multiple gradation provides gradual shading  
over time. This feature is available when Length on the Target Trails menu is set to Normal.  
1. Press the MENU key to open the menu.  
2. Choose the Target Trails menu and press the ENTER key.  
3. Choose Trail Gradation and press the ENTER key.  
Single  
Multi  
4. Choose Single or Multi and press the ENTER key.  
Single  
(Monotone shading)  
Multiple  
(Gradual shading)  
5. Press the MENU key to close the menu.  
1.24.4 Trail color  
You may choose the color in which to paint trails. This feature is available when Length on the  
Target Trails menu is set to Normal.  
1. Press the MENU key to open the menu.  
2. Choose the Target Trails menu and press the ENTER key.  
3. Choose Color and press the ENTER key.  
Green  
Red  
Blue  
White  
Black  
4. Choose the appropriate color and press the ENTER key.  
5. Press the MENU key to close the menu.  
1.24.5 Trail level  
You may choose which target strength for which to generate trails.  
1. Press the MENU key to open the menu.  
2. Choose the Target Trails menu and press the ENTER key.  
3. Choose Level and press the ENTER key.  
1
2
3
4. Choose 1, 2 or 3 as appropriate and press the ENTER key.  
1: Trails generated for all targets (including weak ones), 2: Normal usage, 3: Trails generated  
for strong targets only  
5. Press the MENU key to close the menu.  
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1. OPERATIONAL OVERVIEW  
1.24.6 Trail copy  
The trail copy feature, which is turned on in the default setting, lets you continue tracing target  
trails when switching to a range twice as large or up to half the current range. (If the newly selected  
range is out of those limits, trails are cleared from the screen and then restarted.) When trail copy  
is turned off, trails are erased and restarted whenever the range is changed.  
Copied trail picture  
After changing range  
Before changing range  
How trail copy works  
1. Press the MENU key to open the menu.  
2. Choose the Target Trails menu and press the ENTER key.  
3. Choose Copy and press the ENTER key.  
Off  
On  
4. Choose Off or On as appropriate and press the ENTER key.  
5. Press the MENU key to close the menu.  
1.24.7 Narrow trails  
Target trails may be painted in thinner trails if desired. This can be useful when there are a lot of  
targets on the screen.  
1. Press the MENU key to open the menu.  
2. Choose the Target Trails menu and press the ENTER key.  
3. Choose Narrow and press the ENTER key.  
4. Choose Off or On as appropriate and press the ENTER key.  
5. Press the MENU key to close the menu.  
1.24.8 Own ship trail  
You may show own ship’s trail as follows:  
1. Press the MENU key to open the menu.  
2. Choose Own Ship and press the ENTER key.  
3. Choose Off or On as appropriate and press the ENTER key.  
4. Press the MENU key to close the menu.  
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1. OPERATIONAL OVERVIEW  
1.24.9 Restarting trails  
When the range is changed while the trail feature is active, trails within the former range scale may  
stopped and restarted. The relationship between trail restart and trail copy is shown in the table  
below.  
Restart feature  
Off  
Trail copy feature  
Action  
On or Off  
Range switched to adjacent range scale  
All trails are erased when range is changed. Trails are  
not restarted.  
Return to previous range scale  
Previous trails are displayed and are continued.  
On  
On  
Off  
Range switched to adjacent range scale  
Previous trails remain on the display and are con-  
tinued.  
Return to previous range scale  
Previous trails are displayed and are continued.  
Range switched to adjacent range scale  
Trails are restarted.  
Return to previous range scale  
Trails are restarted.  
1. Press the MENU key to open the menu.  
2. Choose Restart and press the ENTER key.  
3. Choose Off or On as appropriate and press the ENTER key.  
4. Press the MENU key to close the menu.  
1.24.10 Trail length  
Several preset trail lengths (times) are programmed for the TRAILS key for your convenience.  
Standard trail times: 15 s, 30 s, 1 min, 3 min, 6 min, 15 min, 30 min, continuous  
12H and 24 times: Long trail settings, continuous  
If you prefer a different time you may set it as below.  
1. Press the MENU key to open the menu.  
2. Choose Target Trails and press the ENTER key.  
3. Choose Length and press the ENTER key.  
Normal  
12H  
24H  
4. Choose Normal, 12H or 24H as appropriate and press the ENTER key.  
Normal: Use times programmed for the TRAILS key.  
12H: Continuous trail from 30 minutes to 12 hours, in increments of 30 minutes.  
24H: Continuous trail from one hour to 24 hours, in increments of one hour.  
For Normal, go to step 7. For 12H or 24H, go to the next step.  
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1. OPERATIONAL OVERVIEW  
5. Choose Time and press the ENTER key.  
12h:00m  
12h:00m  
(00h:30m-12h:00m)  
12 hour  
(01h:00m-24h:00m)  
24 hour  
6. Roll the trackball upward or downward as appropriate to set time and press the ENTER key.  
7. Press the MENU key to close the menu.  
1.25 Parallel Index Lines  
Parallel index lines are useful for keeping a constant distance between own ship and a coastline  
or a partner ship when navigating. You may control the orientation and line interval.  
Index  
lines  
Parallel index lines  
1.25.1 Turning parallel index lines on or off  
1. Press the MENU key to show the menu.  
2. Choose Mark and press the ENTER key.  
3. Choose Parallel Line and press the ENTER key.  
Off  
2
3
6
4. Choose the number of parallel index lines to show (2, 3 or 6) or choose Off to turn off the lines.  
(The actual number of lines visible may be less depending on line interval.)  
5. Press the ENTER key.  
6. Press the MENU key to close the menu.  
1.25.2 Adjusting parallel index line orientation and interval  
1. Press the EBL key to activate the No. 2 EBL.  
2. Roll the trackball to adjust the orientation of the lines.  
3. Press the VRM key to activate the No. 2 VRM.  
4. Roll the trackball to adjust the interval between lines.  
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1. OPERATIONAL OVERVIEW  
1.25.3 Parallel index lines mode  
You may choose the index line orientation against the No. 2 EBL (dashed line) for parallel or ver-  
tical as follows:  
1. Press the MENU key to open the menu.  
2. Choose Mark and press the ENTER key.  
3. Choose Parallel Line Mode and press the ENTER key.  
Parallel  
Vertical  
4. Choose Parallel or Vertical as appropriate and press the ENTER key.  
Vertical  
Parallel  
5. Press the MENU key to close the menu.  
1.26 Outputting Target Position, Inscribing Origin  
Mark  
The TLL key functions to both output cursor position to external equipment such as a navigation  
plotter (where it is marked on its screen) and inscribe an asterisk (*) at cursor position on the radar.  
Twenty marks may be inscribed on the screen. When you enter a 21st mark, the eldest mark is  
erased to make room for the latest. To erase a mark, place the cursor on it and press the  
CANCEL/HL OFF key.  
1.26.1 TLL key mode  
The TLL key can be preset to output target position, inscribe the origin mark or do both.  
1. Press the MENU key to open the menu.  
2. Choose Mark and press the ENTER key.  
3. Choose TLL Key Mode and press the ENTER key.  
TLL Output  
Origin Mark  
Both  
4. Choose TLL Output, Origin Mark or Both as appropriate and press the ENTER key.  
TLL Output: Cursor Lat/Lon output to plotter (heading signal and position data required)  
Origin Mark: Origin mark is inscribed at cursor position.  
Both: Origin mark is entered and that position is output to a navigator.  
5. Press the MENU key to close the menu.  
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1. OPERATIONAL OVERVIEW  
1.26.2 Origin mark mode  
You may choose how the origin mark moves on the screen from either True or Relative.  
1. Press the MENU key to open the menu.  
2. Choose Mark and press the ENTER key.  
3. Choose Origin Mark Mode and press the ENTER key.  
Relative  
True  
4. Choose Relative or True as appropriate and press the ENTER key.  
5. Press the MENU key to close the menu.  
The asterisk mark is dashed in relative motion; solid in true motion.  
1.27 Temporarily Hiding the Heading Line  
The heading line indicates the ship's heading in all presentation modes. The heading line is a line  
from the own ship position to the outer edge of the radar display area and appears at zero degrees  
on the bearing scale in head-up mode; it changes the orientation depending on the ship orientation  
in north-up and true motion modes and when course is changed in the course-up mode.  
To temporarily hide the heading line (and any other marker present) to look at targets existing  
dead ahead of own ship, press and hold down the CANCEL/HL OFF key. To re-display the  
heading line, release the key.  
1.28 Custom Setup  
1.28.1 About custom setup  
Every time your navigating environment or task changes, you must adjust the radar, which can be  
a nuisance in a busy situation. Instead of changing radar settings case by case, it is possible to  
assign the CUSTOM key to provide optimum settings for often encountered situations.  
The radar's internal computer offers three default custom setups (see the table below). However,  
you may customize these settings to meet your navigation needs, on the Custom 1, Custom 2 and  
Custom 3 menus.  
To enable a custom setup, press the CUSTOM key. Each press of the key enables Custom1,  
Custom2 or Custom3 cyclically. (Custom setup numbers which are turned off will be skipped.) The  
chosen custom setup name is shown at the top left corner. To escape from custom setup, operate  
any control.  
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1. OPERATIONAL OVERVIEW  
1.28.2 Description of custom setup items  
Description of custom setup items  
Menu item  
Custom 1, 2 or 3  
Copy  
Available settings  
Turn respective custom program on/off.  
Copy settings from the Echo menu.  
See para., page  
Name  
Choose name of custom setup among harbor, long, sea,  
rain, buoy, and bird.  
Gain  
Sea  
Rough, Moderate, Calm: Automatic gain adjustment  
according to sea state.  
Manual: Manual adjustment  
1.10, 1-12  
Rough, Moderate, Calm: Automatic sea clutter adjust- 1.11, 1-13  
ment according to sea state.  
Manual: Manual adjustment  
Rain  
Rough, Moderate, Calm: Automatic rain clutter adjust- 1.12, 1-14  
ment according to sea state.  
Manual: Manual adjustment  
Pulse length  
Echo stretch  
Echo average  
Noise rejector  
Short or Long, selectable on 1.5 and 3 nm ranges.  
1.9, 1-11  
Off, 1, 2, 3  
1.22, 1-27  
1.23, 1-28  
1.30, 1-40  
1.15, 1-17  
1.13, 1-15  
1.35, 1-45  
Off, 1, 2, 3  
Off, Low, Med, High  
Interference rejector Off, Low, Med, High  
Auto anti-clutter  
Display-dynamic  
Off, On  
Narrow: See small targets located on near ranges  
Normal: Normal use  
Wide: Suppress unwanted reflections  
Display-curve  
1.36, 1-45  
1.37, 1-46  
1: Suppress unwanted reflections  
2: Normal use  
3: See small targets located on near ranges  
Antenna speed  
24 rpm, 36 rpm, 48 rpm, Auto/Range  
1-37  
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1. OPERATIONAL OVERVIEW  
1.28.3 Setting custom setups  
1. Press the MENU key to show the menu.  
2. Choose Custom 1, Custom 2 or Custom 3 as appropriate and press the ENTER key.  
Custom 1  
Menu  
Brill/Color  
Display  
Echo  
Target Trails  
Mark  
Custom 1  
Custom 2  
Custom 3  
Tuning  
GPS Buoy  
Target  
Custom 1  
Copy  
Name  
Gain  
Sea  
Rain  
Pulse Length  
Echo Stretch  
Echo Average  
Noise Rejector  
Interference Rejector  
Auto Anti Clutter  
DIsplay-Dynamic  
:On  
:Harbor  
:Moderate  
:Calm  
:Calm  
:Short  
:1  
:Off  
:Off  
:Off  
:Off  
ARP  
AIS  
:Normal  
GPS  
System  
[ENTER]: Enter [CANCEL/HL OFF]: Back  
[MENU]: Exit  
3. Choose Name and press the ENTER key to display the options shown right.  
Harbor  
Long  
Sea  
Rain  
Buoy  
Bird  
4. Choose the name which best matches your desired objective and press the  
ENTER key.  
5. Set other menu items as appropriate.  
Note: For easy set up, you can copy the settings of the Echo menu (to Custom  
1, Custom 2, Custom 3). Choose Copy and press the ENTER key. The message  
"Complete" appears upon completion of copying.  
6. Press the MENU key to close the menu.  
Sample custom setups  
Menu item  
Name  
Application  
Sea Rain  
Harbor  
Moderate  
Calm  
Calm  
Short  
Off  
Long  
Rough  
Buoy  
Moderate  
Calm  
Calm  
Short  
1
Bird  
Gain  
Calm  
Moderate  
Moderate  
Short  
Off  
Calm  
Moderate  
Moderate  
Short  
Off  
Rough  
Sea  
Calm  
Calm  
Long  
2
Calm  
Calm  
Long  
2
Rain  
Pulse length  
Echo stretch  
Echo average  
Noise rejector  
Int. rejector  
Off  
3
1
1 or 2  
Off  
1 or 2  
Off  
3
Off  
Low  
High  
Off  
Off  
Low  
Medium  
Off  
High  
High  
On  
Medium  
On  
Medium  
Off  
Auto anti-clutter Off  
Display-dynamic Narrow  
Narrow  
2
Wide  
2
Wide  
2
Normal  
2
Narrow  
2
Display-curve  
2
Antenna speed 48 rpm  
24 rpm  
24 rpm  
24 rpm  
24 rpm  
24 rpm  
1-38  
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1. OPERATIONAL OVERVIEW  
1.29 Programming Function Keys (F1 and F2 keys)  
Many functions are provided in the menu. To avoid opening the menus to set up the radar for a  
particular situation, you may program a function key, F1 and F2, to provide one-touch access to  
a desired function.  
Function key operation  
To activate a function, simply press the appropriate function key, F1 or F2. Push the same function  
key again to display appropriate option and press the ENTER key.  
The default programs are F1, Echo Average, F2, Auto Anti Clutter.  
Changing function key program  
To change function key program, do the following:  
1. Press the MENU key to show the menu.  
2. Choose Display and press the ENTER key.  
3. Choose Function 1 Setup or Function 2 Setup as appropriate and press the ENTER key.  
4. Choose desired function from the list and press the ENTER key. Below are the functions avail-  
able.  
Range Rings Brill  
Echo Color  
Display Color  
Background Color  
Echo Area  
Watchman Time  
Data Box  
Zoom Mode  
Antenna Speed  
2nd Echo Rejector  
Trails-Gradation  
Trails-Color  
Trails-Mode  
Trails-Level  
GPS Buoy-Display  
GPS Buoy-Symbol Color  
GPS Buoy-History Dots  
Vector Time  
Vector Reference  
History Dots  
Trails-Length  
Trails-Copy  
History Intervals  
CPA  
STBY Mode Display Trails-Restart  
TCPA  
Auto Gain  
Auto Sea  
Trails-Narrow  
Trails-Own Ship  
Proximity Alarm  
ARP-Display  
Auto Rain  
Waypoint Mark Display ARP-Symbol Color  
Tuning Mode  
Pulse Length  
Echo Stretch  
Echo Average  
Noise Rejector  
Origin Mark Mode  
TLL Key Mode  
Parallel Line  
Parallel Line Mode  
EBL Reference  
ARP-Auto Acquire  
AIS-Display  
AIS-Symbol Color  
AIS-Sort By  
GPS-Mode  
Interference Rejector VRM Unit  
GPS-Datum  
Auto Anti Clutter  
Display-Dynamic  
Display-Curve  
Cursor Position  
Target Alarm 1 Mode  
Target Alarm 2 Mode  
GPS-WAAS  
Function list  
5. Press the MENU key to close the menu.  
1-39  
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1. OPERATIONAL OVERVIEW  
1.30 Noise Rejector  
White noise may show itself on the screen as random "speckles" spread over the entire display.  
You can suppress this noise as follows:  
1. Press the MENU key to show the menu.  
2. Choose Echo and press the ENTER key.  
3. Choose Noise Rejector and press the ENTER key.  
Off  
Low  
Med  
High  
4. Choose Off, Low, Med or High as appropriate and press the ENTER key.  
5. Press the MENU key to close the menu.  
1.31 Suppressing Second-trace Echoes  
In certain situations, echoes from very distance targets may appear as false echoes (second-trace  
echoes) on the screen. This occurs when the return echo is received one transmission cycle later,  
or after a next radar pulse has been transmitted.  
Tx repetition  
Second-trace  
echo  
False echo  
range  
Actual range  
How 2nd trace echoes are produced  
1. Press the MENU key to show the menu.  
2. Choose Echo and press the ENTER key.  
3. Choose 2nd Echo Rejector and press the ENTER key.  
4. Choose On or Off as appropriate and press the ENTER key.  
5. Press the MENU key to close the menu.  
1-40  
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1. OPERATIONAL OVERVIEW  
1.32 Watchman  
The Watchman feature transmits for one minute at the elapse of the chosen time interval to help  
you keep regular watch of the radar picture for safety or other purposes.  
*
*
ST-BY  
Tx  
Tx  
ST-BY  
5,10 or 20 min.  
1 min.  
5,10 or 20 min.  
1 min  
* Beep emitted just before radar transmits.  
Watchman  
starts  
How watchman works  
In standby condition, the timer below the WATCH label at the upper right corner of the screen  
counts down the time remaining until transmission. When the preset time interval has elapsed, the  
audio alarm sounds, the timer disappears and the radar transmits for one minute. After one  
minute, the watch alarm timer begins the countdown sequence again.  
If you press the STBY/TX key before the preset time interval has elapsed, the radar goes into  
standby.  
Do the following to activate Watchman:  
1. Press the MENU key to show the menu.  
2. Choose DIsplay and press the ENTER key.  
3. Choose Watchman and press the ENTER key.  
Off  
5 min  
10 min  
20 min  
4. Choose Off or appropriate time (5, 10 or 20 min) and press the ENTER key.  
5. Press the MENU key to close the menu.  
1-41  
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1. OPERATIONAL OVERVIEW  
1.33 Color Schemes  
1.33.1 Preset color schemes  
Preset color schemes are provided for optimum viewing in daytime, nighttime and twilight. Below  
are the default color settings for each preset color scheme.  
Display item, color scheme and color  
DIsplay item  
Text  
Day  
Black  
Night  
Red  
Twilight  
Green  
User  
Green  
Range rings  
Echo  
Green  
Yellow  
White  
Red  
Green  
Green  
Blue  
Green  
Yellow  
Black  
Green  
Black  
Background  
1. Press the MENU key to show the menu.  
2. Choose Brill/Color and press the ENTER key.  
3. Choose Display Color and press the ENTER key.  
Day  
Night  
Twilight  
User  
4. Choose a color scheme and press the ENTER key.  
5. Press the MENU key to close the menu.  
1.33.2 User color scheme  
The user color scheme lets you choose desired echo color and background color. The display  
color must be set for “User” (see paragraph 1.33.1) to use user chosen echo and background  
colors.  
1. Press the MENU key to show the menu.  
2. Choose Brill/Color and press the ENTER key.  
3. Choose Echo Color and press the ENTER key.  
Yellow  
Green  
Multi  
4. Choose appropriate option and press the ENTER key. “Multi” displays echoes in colors of red,  
yellow and green according to echo strength, and it is not available in the IEC mode.  
5. Choose Background Color and press the ENTER key.  
Black/Green  
Black/Red  
Blue/White  
DK Blue/White  
White/Green  
6. Choose background color desired and press the ENTER key.  
7. Press the MENU key to close the menu.  
1-42  
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1. OPERATIONAL OVERVIEW  
1.34 Navigation Data  
1.34.1 Navigation data during standby  
Navigation data is shown in standby when STBY Mode Display in the Initial Menu is set to “Nav”.  
Appropriate sensors required to display data.  
Cross-track  
error  
Time until Tx in watchman  
(Displayed when watchman is active.)  
Heading  
<WATCH> 19:59  
XTE  
HEADING  
Standby indication  
9.99nm 359.9  
°
STBY  
Waypoint  
Flashes if  
vessel goes  
outside display  
bearing.  
Heading indicator  
Graphic appears even  
if bearing signal is lost,  
however the compass  
point indications do not  
appear.  
NNW  
NNE  
NE  
E
W
NW  
N
Own ship marker  
Fixed regardless  
of ship's movement.  
SPEED  
DATE  
COURSE  
Speed  
Date  
Course  
Time  
12.9 kts  
359.9  
23 : 59 : 59  
90° 00.000 N  
°
TIME  
24/JAN/2006  
POSITION  
LAT  
Position  
LON  
180° 00.000 E  
DEPTH  
40.3  
WIND  
TEMP 18.3(°C)  
65.3 (kt)  
45.0  
(m)  
20  
30(min)  
10  
°
(R)  
0
N
30  
20  
20  
10  
0
40  
60  
80  
(min)  
30  
20  
10  
Depth  
Wind speed  
and direction  
Water  
temperature  
Navigation data display at standby  
1-43  
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1. OPERATIONAL OVERVIEW  
Depth and water temperature graphs  
These graphs display the latest 30 minutes of respective data. The horizontal axis scale is fixed  
and data is plotted at intervals of 10 seconds. The vertical axis scale is adjusted automatically for  
every 30 minutes of data. The unit of measurement may be chosen on the Initial sub menu in the  
System menu.  
Wind graph  
WInd direction reference may be chosen (on the Initial sub menu) from True or Apparent.  
Apparent wind is the direction (in relation to ship’s bow) and speed of the wind as it appears to  
those on board, relative to the speed and direction of the boat; combination of the true wind and  
the wind caused by the boat's movement. True wind is the speed and direction (in relation to  
ship’s bow) of the wind felt or measured when stationary.  
1.34.2 Navigation data at the bottom of the screen  
Navigation data may be displayed at the bottom of the screen.  
Range from own ship to waypoint  
Bearing from own ship to waypoint  
Time to go from own ship position to waypoint  
WAY  
POINT 202.2  
14.80 NM  
OWN LAT: 34  
SHIP LON: 135  
°
°
56.123 N CURSOR LAT: 34  
34.567 E LON: 135  
TTG: 01:00  
°
°
56.123 N  
34.567 E  
TEMP 12.3°C  
°
TTG: 00:20  
SPEED 12.3 kt  
DEPTH 56.7 m  
Water temperature,  
Depth  
Own ship  
position and  
speed  
Cursor latitude position  
Cursor longitude position  
Time to go to cursor position  
Navigation data  
To show navigation data at the bottom of the screen, do the following:  
1. Press the MENU key to open the menu.  
2. Choose the Display menu and press the ENTER key.  
3. Choose Data Box and press the ENTER key.  
Off  
Nav  
Target  
All  
4. Choose appropriate option and press the ENTER key.  
Off: Turn data display off.  
Nav: Navigation data  
Target: ARP and AIS target data  
All: Navigation data plus ARP and AIS target data  
5. Press the MENU key to close the menu.  
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1. OPERATIONAL OVERVIEW  
1.35 Dynamic Range  
You may change the dynamic range to cope with sea conditions or get a better view at a certain  
target.  
1. Press the MENU key to open the menu.  
2. Choose the Echo menu and press the ENTER key.  
3. Choose Display-Dynamic and press the ENTER key.  
Narrow  
Normal  
Wide  
4. Choose Narrow, Normal or Wide as appropriate and press the ENTER key.  
Narrow: See small targets located on near ranges.  
Normal: Normal use  
Wide: Suppress unwanted reflections  
5. Press the MENU key to close the menu.  
1.36 Characteristics Curve  
The characteristics curve of this radar may be changed to cope with sea conditions or get a better  
view at a certain target.  
1. Press the MENU key to open the menu.  
2. Choose the Echo menu and press the ENTER key.  
3. Choose Display-Curve and press the ENTER key.  
1
2
3
4. Choose 1 or 2(Exponential) or 3(Logarithm) as appropriate and press the ENTER key.  
1: Suppress unwanted reflections  
2: Normal use  
3: See small targets on near ranges.  
3
2
1
Display echo  
level  
Input level  
Display curve  
5. Press the MENU key to close the menu.  
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1. OPERATIONAL OVERVIEW  
1.37 Antenna Speed  
The antenna speed may be changed to meet operating requirements. Choose a high speed when  
cruising at high speed to ensure timely update of radar targets. Note that the speed cannot be  
changed on the 24 rpm motor; it is fixed at 24 rpm.  
1. Press the MENU key to open the menu.  
2. Choose the Echo menu and press the ENTER key.  
3. Choose Antenna Speed and press the ENTER key.  
24rpm  
36rpm  
48rpm  
Auto/Range  
4. Choose appropriate antenna speed. Auto/Range automatically changes antenna speed  
according to range.  
5. Press the ENTER key.  
6. Press the MENU key to close the menu.  
1.38 Waypoint Marker  
The waypoint marker shows the location of the destination waypoint set on a navigation plotter.  
You can turn this mark on or off as follows:  
0.5  
NM  
3
Waypoint  
marker  
+
+ 110.1°R 2.525 NM  
Waypoint mark  
1. Press the MENU key to open the menu.  
2. Choose Mark and press the ENTER key.  
3. Choose Waypoint Mark Display and press the ENTER key.  
4. Choose On or Off as appropriate and press the ENTER key.  
5. Press the MENU key to close the menu.  
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1. OPERATIONAL OVERVIEW  
1.39 Alarm Message Display  
When trouble occurs the radar generates audio and visual (alarm message display) alarms to alert  
you. The alarm message display shows all alarms currently violated. You may show this display  
as follows:  
1. Press the MENU key to open the menu.  
2. Choose the Display menu and press the ENTER key.  
3. Choose Alarm Message and press the ENTER key.  
Alarm Message  
[SIGNAL MISSING] TRIGGER HEADING BEARING GYRO VIDEO POSITION NMEA-HEAD  
[TARGET ALARM1] IN OUT  
[TARGET ALARM2] IN OUT  
[ARP ALARM] COLLISION LOST TARGET-FULL PROXIMITY  
[AIS ALARM] COLLISION PROXIMITY  
[AIS SYSTEM] TX ANT CH1 CH2 CH70 FAIL MKD  
EPFS L/L SOG COG HDG ROT  
<PLEASE PUSH ANY KEY - - TO STOP ALARM AND CLOSE THIS WINDOW>  
Alarm message display  
To close the alarm message display, press any key.  
List of alarm messages  
List of alarm messages  
Alarm category  
Signal missing  
Alarm name  
BEARING  
GYRO  
Bearing signal lost  
AD-10 format gyro signal lost  
Heading signal lost  
HEADING  
NMEA-HEAD  
POSITION  
TRIGGER  
VIDEO  
NMEA format heading signal lost  
NMEA format position data lost  
Trigger signal lost  
Video signal lost  
Target alarm  
IN  
An echo has entered a target alarm zone.  
An echo has exited a target alarm zone.  
OUT  
ARP alarm  
COLLISION  
CPA and TCPA of an ARP target is less than CPA and TCPA alarm  
settings.  
LOST  
Acquired ARP target becomes lost.  
PROXIMITY  
The range to an ARP target is less than the user-set proximity  
alarm range.  
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1. OPERATIONAL OVERVIEW  
List of alarm messages  
Alarm name  
Alarm category  
AIS alarm  
COLLISION  
CPA and TCPA of an AIS target is less than CPA and TCPA alarm  
settings.  
PROXIMITY  
The range to an AIS target is less than the user-set proximity  
alarm range.  
AIS system  
ANT  
Antenna VSWR trouble  
TDM2 RX1 board trouble  
TDM2 RX2 board trouble  
X channel 70 trouble  
Course data lost  
CH1  
CH2  
CH70  
COG  
FAIL  
System failure  
EPFS  
HDG  
L/L  
Navigator (GPS, etc.) trouble  
Heading data lost  
Position data lost  
MKD  
ROT  
SOG  
TX  
Minimum input device lost  
Rate of turn data lost  
Speed data lost  
TX stopped or TX error  
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1. OPERATIONAL OVERVIEW  
1.40 Echo Area  
The effective display area can be either ellipsis or square shaped.  
Area in which echoes are displayed  
Data Display  
Data Display  
Square  
Ellipse  
1. Press the MENU key to open the menu.  
2. Choose the Display menu and press the ENTER key.  
3. Choose Echo Area and press the ENTER key.  
Ellipse  
Square  
4. Choose appropriate configuration and press the ENTER key.  
5. Press the MENU key to close the menu.  
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1. OPERATIONAL OVERVIEW  
1.41 Customizing (Initial Menu)  
The Initial sub menu in the System menu contains items which allow you to customize your radar  
to meet your operational needs.  
1.41.1 Opening the Initial menu  
1. Press the MENU key to open the menu.  
2. Roll the trackball to choose System followed by Initial and press the ENTER key.  
Initial  
Menu  
Target Trails  
Mark  
Custom 1  
Custom 2  
Custom 3  
Tuning  
Key Beep  
: On  
: nm  
: Med  
: Rotate  
: 15 kt  
Range Unit  
Alarm Level  
Antenna Rotation  
Shift Speed  
STBY Mode Display : Normal  
GPS Buoy  
Target  
ARP  
AIS  
GPS  
System  
Initial  
Factory  
Installation  
Bearing Source  
Range Preset  
Ship Speed Unit  
Depth Unit  
Temperature Unit  
Wind Direction  
Wind Speed Unit  
: True  
: kt  
: ft  
°
: F  
: Apparent  
: kt  
[ENTER]: Enter [CANCEL/HL OFF]: Back  
[MENU]: Exit  
Initial menu  
1.41.2 Description of Initial sub menu  
Key Beep: A beep sounds when a key are pressed. You may turn this beep on or off.  
Range Unit: Range may be shown in nm, km or sm.  
Alarm Level: The target alarm may be set to sound against weak, medium or strong echoes.  
Antenna Rotation: “Rotate,” the default setting, stops transmission when the antenna is not  
rotating. “Stop” transmits radar pulses without rotating the antenna.  
Shift Speed: Set the ship’s speed to use calculate amount of display shift. The setting range is 1-  
99 (kts).  
STBY Mode Display: Set the function of the radar in standby.  
Normal: Display “STBY” at the screen center.  
Nav: Display navigation data.  
Economy: Extinguish the backlight of the LCD. The radar must be switched from TX to ST-BY  
to activate this mode.  
Bearing Source: Choose the type of bearing sensor connected to the radar; True (gyrocompass,  
satellite compass) or Magnetic (magnetic compass).  
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1. OPERATIONAL OVERVIEW  
Range Preset: You may choose the radar ranges you wish to use. Choose a range and press the  
ENTER key to turn that range on or off alternately. At least two ranges must be turned on. The  
maximum range available depends on radar model. Note that 0.125 is not available in kilometers.  
0.125 On  
0.125 On  
0.125 On  
0.25  
0.5  
0.75  
1
On  
On  
On  
Off  
On  
Off  
On  
Off  
On  
Off  
On  
Off  
On  
Off  
On  
Off  
On  
On  
0.25  
0.5  
0.75  
1
On  
On  
On  
Off  
On  
Off  
On  
Off  
On  
Off  
On  
Off  
On  
Off  
On  
Off  
On  
On  
0.25  
0.5  
0.75  
1
On  
On  
On  
Off  
On  
Off  
On  
Off  
On  
Off  
On  
Off  
On  
Off  
On  
Off  
On  
On  
1.5  
2
1.5  
2
1.5  
2
3
3
3
4
4
4
6
6
6
8
8
8
12  
16  
24  
36  
48  
64  
72  
96*  
12  
16  
24  
36  
48  
64  
72  
96  
12  
16  
24  
36  
48  
64  
72  
96*  
Exit? Yes  
Exit? Yes  
Exit? Yes  
* FR-8252 only  
nautical miles  
kilometers  
statute miles  
Available ranges  
Ship Speed Unit: The ship’s speed unit may be selected to knots (kts), kilometers/hour (km/h) or  
miles per hour (mph).  
Depth Unit: The depth unit is available in meters (m), feet (ft), fathoms (fa), passi/braza (p/b) or  
Hiro (hr).  
Temperature Unit: Temperature may be displayed in °C (Celsius) or °F (Fahrenheit).  
Wind Direction: Wind direction may be shown as True or Apparent. For further details, see para-  
graph 1.34.1.  
Wind Speed Unit: Wind speed may be shown in knots (kts), kilometers per hour (km/h), miles per  
hour (mph) or meters/second (m/s).  
Port 1: Set the baud rate of the equipment connected to Port1. “Auto” provides automatic detec-  
tion of baud rate, for external equipment’s whose baud rate is 4800 or 38400 (bps).  
Port 2: Same function as Port1 but for Port2.  
Through Output: Data input to port 1 may be output from port 2. Choose “On” to use this feature.  
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1. OPERATIONAL OVERVIEW  
1.42 Sector Blank  
It may be necessary to prevent transmission in a certain area to protect passengers and crew from  
microwave radiation. For example, if the antenna unit is installed at a close distance in front of the  
wheel house you would want to prevent transmission in that area. Two sectors can be set.  
1. Press the MENU key to open the menu.  
2. Choose Sector Blank 1 or Sector Blank 2 from the System menu and press the ENTER key.  
Sector Blank 1  
Menu  
Sector Status  
Sector Start  
Sector Area  
: Off  
Custom 1  
Custom 2  
Custom 3  
Tuning  
GPS Buoy  
Target  
:
:
0°  
0°  
ARP  
AIS  
GPS  
System  
Initial  
Factory  
Installation  
Sector Blank 1  
Sector Blank 2  
[ENTER]: Enter [CANCEL/HL OFF]: Back  
[MENU]: Exit  
3. Choose Sector Status and press the ENTER key.  
Off  
On  
4. Choose On and press the ENTER key.  
5. Choose Sector Start and press the ENTER key.  
S
0°  
T
(0° - 359°)  
6. Roll the trackball upward or downward to set the starting point of the sector and press the  
ENTER key.  
7. Choose Sector Area and press the ENTER key.  
S
0°  
T
(0° - 180°)  
1-52  
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1. OPERATIONAL OVERVIEW  
8. Roll the trackball upward or downward to set the width of the sector and press the ENTER key.  
Note: The combined width of sector 1 and sector 2 may not exceed 270 degrees.  
9. Press the MENU key to close the menu.  
As shown in the illustration below, dashed lines mark the starting and ending points of the  
sector and two dashed arcs run the width of the sector.  
+
Area of no  
transmission  
Start bearing  
of area  
+ 96.8°R 0.338 NM  
Appearance of sector blank  
1-53  
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1. OPERATIONAL OVERVIEW  
1.43 GPS Buoy  
With connection of a GPS radio buoy locator, GPS buoy position can be monitored on the radar  
screen. One application of a GPS buoy is to tether it to a fishing net to monitor net position on the  
radar screen. Up to five buoys may be shown.  
+
01  
GPS buoy no.  
GPS buoy  
02  
GPS buoy's  
track  
+ 96.8°R 0.338 NM  
GPS buoy symbols  
1.43.1 Displaying GPS buoys  
1. Press the MENU key to show the menu.  
2. Choose GPS Buoy and press the ENTER key.  
GPS Buoy  
Menu  
Brill/Color  
Display  
Echo  
Target Trails  
Mark  
Display  
:Off  
:Green  
:Off  
Symbol Color  
History Dots  
All Cancel  
Custom 1  
Custom 2  
Custom 3  
Tuning  
GPS Buoy  
Target  
ARP  
AIS  
GPS  
System  
[ENTER]: Enter [CANCEL/HL OFF]: Back  
[MENU]: Exit  
GPS buoy menu  
3. Choose Display and press the ENTER key.  
4. Choose Off or On as appropriate and press the ENTER key.  
5. Press the MENU key to close the menu.  
1-54  
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1. OPERATIONAL OVERVIEW  
1.43.2 Choosing symbol color  
1. Press the MENU key to open the menu.  
2. Choose GPS Buoy and press the ENTER key.  
3. Choose Symbol Color and press the ENTER key.  
Green  
Red  
Blue  
White  
Black  
4. Choose appropriate color and press the ENTER key.  
5. Press the MENU key to close the menu.  
1.43.3 History display  
This radar can display time-spaced dots (maximum 20 dots) marking the past positions of any  
GPS buoy being tracked. You can choose the number of dots to display as follows:  
1. Press the MENU key to open the menu.  
2. Choose Target and press the ENTER key.  
3. Choose History Dots and press the ENTER key.  
Off  
5
10  
20  
4. Choose number of history dots to display (5, 10 or 20), or choose Off to turn off the history dis-  
play.  
5. Press the ENTER key.  
6. Press the MENU key to close the menu.  
1-55  
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1. OPERATIONAL OVERVIEW  
1.43.4 Erasing GPS buoy symbols  
When the screen becomes cluttered with GPS buoy symbols and their tracks you can erase them  
individually or collectively as shown below. The symbols will be erased, however GPS buoys will  
again be displayed whenever they are received by the GPS radio buoy locator.  
Erasing individual GPS buoy symbols  
Place the cursor on the GPS buoy symbol you wish to erase and press the HL OFF/CANCEL key.  
Two beeps sounds and the symbol is erased.  
Erasing all GPS buoys symbols  
1. Press the MENU key to open the menu.  
2. Choose GPS Buoy and press the ENTER key.  
3. Choose All Cancel and press the ENTER key.  
4. You are asked if you are sure to erase all buoy symbols. Choose Yes and press the ENTER  
key. A beep sounds while the GPS buoys symbols are being erased.  
Are you sure?  
Yes  
No  
5. Press the MENU key to close the menu.  
1-56  
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2. RADAR OBSERVATION  
2.1 General  
2.1.1  
Minimum and maximum ranges  
Minimum range  
The minimum range is defined by the shortest distance at which, using a scale of 1.5 or 0.75 nm,  
2
a target having an echoing area of 10 m is still shown separate from the point representing the  
antenna position.  
It is mainly dependent on the pulse length, antenna height, and signal processing such as main  
bang suppression and digital quantization. It is a good practice to use a shorter range scale as far  
as it gives favorable definition or clarity of picture. This series of radars satisfy the requirement of  
IEC 62252 5.14.1 (Class A).  
Maximum range  
The maximum detecting range of the radar, Rmax, varies considerably depending on several fac-  
tors such as the height of the antenna above the waterline, the height of the target above the sea,  
the size, shape and material of the target, and the atmospheric conditions.  
Under normal atmospheric conditions, the maximum range is equal to the radar horizon or a little  
shorter. The radar horizon is longer than the optical one by about 6% because of the diffraction  
property of the radar signal. The Rmax is given in the following equation.  
Rmax= 2.2 x ( h1 + h2 )  
where Rmax: radar horizon (nautical miles)  
h1: antenna height (m)  
h2: target height (m)  
Radar horizon  
Optical horizon  
For example, if the height of the antenna above the waterline is 9 meters and the height of the  
target is 16 meters, the maximum radar range is;  
Rmax= 2.2 x ( 9 + 16 ) = 2.2 x (3 + 4) = 15.4 nm  
It should be noted that the detection range is reduced by precipitation (which absorbs the radar  
signal).  
2-1  
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2. RADAR OBSERVATION  
2.1.2  
Radar resolution  
There are two important factors in radar resolution (discrimination): bearing resolution and range  
resolution.  
Bearing resolution  
Bearing resolution is the ability of the radar to display as separate pips the echoes received from  
two targets which are at the same range and close together. It is proportional to the antenna length  
and reciprocally proportional to the wavelength. The length of the antenna radiator should be  
chosen for a bearing resolution better than 4.5 degrees (IEC 62252 Class A). This condition is nor-  
mally satisfied with a radiator of 1.2 m (4 ft) or longer in the X-band.  
Range resolution  
Range resolution is the ability to display as separate pips the echoes received from two targets  
which are on the same bearing and close to each other. This is determined by pulse length only.  
Test targets for determining the range and bearing resolution are radar reflectors having an  
2
echoing area of 10 m .  
2.1.3  
Bearing accuracy  
One of the most important features of the radar is how accurately the bearing of a target can be  
measured. The accuracy of bearing measurement basically depends on the narrowness of the  
radar beam. However, the bearing is usually taken relative to the ship's heading, and thus, proper  
adjustment of the heading line at installation is an important factor in ensuring bearing accuracy.  
To minimize error when measuring the bearing of a target, put the target echo at the extreme posi-  
tion on the screen by selecting a suitable range.  
2.1.4  
Range measurement  
Measurement of the range to a target is also a very important function of the radar. Generally,  
there are two means of measuring range: the fixed range rings and the variable range marker  
(VRM). The fixed range rings appear on the screen with a predetermined interval and provide a  
rough estimate of the range to a target. The variable range marker's diameter is increased or  
decreased so that the marker touches the inner edge of the target, allowing the operator to obtain  
more accurate range measurements.  
2-2  
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2. RADAR OBSERVATION  
2.2 False Echoes  
Occasionally echo signals appear on the screen at positions where there is no target or disappear  
even if there are targets. They are, however, recognized if you understand the reason why they  
are displayed. Typical false echoes are shown below.  
2.2.1  
Multiple echoes  
Multiple echoes occur when a transmitted pulse returns from a solid object like a large ship, bridge,  
or breakwater. A second, a third or more echoes may be observed on the display at double, triple  
or other multiples of the actual range of the target as shown below. Multiple reflection echoes can  
be reduced and often removed by decreasing the gain (sensitivity) or properly adjusting the A/C  
SEA control.  
True  
echo  
Target  
Own ship  
Multiple  
echo  
Multiple echoes  
2.2.2  
Sidelobe echoes  
Every time the radar pulse is transmitted, some radiation escapes on each side of the beam,  
called "sidelobes." If a target exists where it can be detected by the sidelobes as well as the main  
lobe, the side echoes may be represented on both sides of the true echo at the same range. Side  
lobes show usually only on short ranges and from strong targets. They can be reduced through  
careful reduction of the gain or proper adjustment of the A/C SEA control.  
True target  
Sidelobe  
Sidelobe echoes  
2-3  
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2. RADAR OBSERVATION  
2.2.3  
Virtual image  
A relatively large target close to your ship may be represented at two positions on the screen. One  
of them is the true echo directly reflected by the target and the other is a false echo which is  
caused by the mirror effect of a large object on or close to your ship as shown in the figure below.  
If your ship comes close to a large metal bridge, for example, such a false echo may temporarily  
be seen on the screen.  
Target ship  
Own ship  
True  
echo  
False  
echo  
Mirror image  
of target ship  
Virtual image  
2.2.4  
Shadow sector  
Funnels, stacks, masts, or derricks in the path of the antenna block the radar beam. If the angle  
subtended at the antenna is more than a few degrees, a non-detecting sector may be produced.  
Within this sector targets can not be detected.  
Radar  
antenna  
Radar  
mast  
Shadow sector  
Shadow sectors  
2-4  
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2. RADAR OBSERVATION  
2.3 SART (Search and Rescue Transponder)  
2.3.1  
SART description  
A Search and Rescue Transponder (SART) may be triggered by any X-Band (3 cm) radar within  
a range of approximately 8 nm. Each radar pulse received causes it to transmit a response which  
is swept repetitively across the complete radar frequency band. When interrogated, it first sweeps  
rapidly (0.4 µs) through the band before beginning a relatively slow sweep (7.5 µs) through the  
band back to the starting frequency. This process is repeated for a total of twelve complete cycles.  
At some point in each sweep, the SART frequency will match that of the interrogating radar and  
be within the pass band of the radar receiver. If the SART is within range, the frequency match  
during each of the 12 slow sweeps will produce a response on the radar display, thus a line of 12  
dots equally spaced by about 0.64 nautical miles will be shown.  
When the radar to the SART is reduced to about 1 nm, the radar display my show also the 12  
responses generated during the fast sweeps. These additional dot responses, which also are  
equally spaced by 0.64 nautical miles, will be interspersed with the original line of 12 dots. They  
will appear slightly weaker and smaller than the original dots.  
Screen A:When SART  
is distant  
Screen B:When SART  
is close  
Lines of 12 dots  
are displayed in  
concentric arcs.  
Radar antenna  
beamwidth  
Echo from SART  
24 NM  
Echo from  
SART  
1.5 NM  
Position of  
SART  
Own ship  
position  
Own ship  
position  
Position of  
SART  
SART mark  
length  
Radar receiver  
bandwidth  
9500 MHz  
9200 MHz  
Sweep time  
7.5 µs  
95 µs  
Low speed sweep signal  
High speed sweep signal  
Sweep start  
Appearance of SART echo  
2-5  
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2. RADAR OBSERVATION  
2.3.2  
General remarks on receiving SART  
SART range errors  
When responses from only the 12 low frequency sweeps are visible (when the SART is at a range  
greater than about 1 nm), the position at which the first dot is displayed may be as much as 0.64  
nm beyond the true position of the SART. When the range closes so that the fast sweep responses  
are seen also, the first of these will be no more than 150 meters beyond the true position.  
Radar bandwidth  
This is normally matched to the radar pulse length and is usually switched with the range scale  
and the associated pulse length. Narrow bandwidths of 3-5 MHz are used with long pulses on long  
range scales and wide bandwidths of 10-25 MHz with short pulses on short ranges.  
A radar bandwidth of less than 5 MHz will attenuate the SART signal slightly, so it is preferable to  
use a medium bandwidth to ensure optimum detection of the SART.  
Radar side lobes  
As the SART is approached, side lobes from the radar antenna may show the SART responses  
as a series of arcs or concentric rings. These can be removed by the use of the anti-clutter sea  
control although it may be operationally useful to observe the side lobes as they may be easier to  
detect in clutter conditions and also they will confirm that the SART is near to own ship.  
Note: SART information excerpted from IMO SN/Circ 197 OPERATION OF MARINE RADAR  
FOR SART DETECTION.  
2.4  
RACON  
A RACON is a radar beacon which emits radar receivable signals in the radar frequency spectrum  
(X- or S-band). There are several signal formats; in general, the RACON signal appears on the  
radar screen as a rectangular echo originating at a point just beyond the position of the radar  
beacon. It has a Morse coded pattern. Note that the position on the radar display is not accurate.  
RACON  
RACON  
2-6  
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3. ARP OPERATION  
The Automatic Radar Plotter ARP-11 (option) manually or automatically acquires and tracks ten  
targets. Once a target is acquired automatically or manually it is automatically tracked within 0.1  
to 16 nm.  
3.1  
Usage Precautions  
CAUTION  
The plotting accuracy and response of  
this auto plotter meets IMO standards.  
Tracking accuracy is affected by the  
following:  
CAUTION  
No one navigational aid should be relied  
upon for the safety of vessel and crew.  
The navigator has the responsibility to  
check all aids available to confirm  
position. Electronic aids are not  
a substitute for basic navigational  
principles and common sense.  
Tracking accuracy is affected by course  
change. One to two minutes is required to  
restore vectors to full accuracy after an  
abrupt course change. (The actual  
amount depends on gyrocompass  
specifications.)  
The amount of tracking delay is inversely  
proportional to the relative speed of the  
target. Delay is on the order of 15-30  
seconds for high relative speed; 30-60  
seconds for low relative speed.  
This auto plotter automatically tracks an  
automatically or manually acquired radar  
target and calculates its course and  
speed, indicating them by a vector. Since  
the data generated by the auto plotter  
are based on what radar targets are  
selected, the radar must always be  
optimally tuned for use with the auto  
plotter, to ensure required targets will not  
be lost or unwanted targets such as sea  
returns and noise will not be acquired  
and tracked.  
Display accuracy is affected by the  
following:  
Echo intensity  
Radar transmission pulsewidth  
Radar bearing error  
Gyrocompass error  
Course change (own ship or target)  
A target does not always mean a land-  
mass, reef, ships or other surface vessels  
but can imply returns from sea surface  
and clutter. As the level of clutter changes  
with environment, the operator should  
properly adjust the A/C SEA, A/C RAIN  
and GAIN controls to be sure target  
echoes are not eliminated from the  
radar screen.  
3-1  
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3. ARP OPERATION  
3.2  
Controls for Use with ARP  
ENTER: Acquire cursor-selected target; displays data for tracked target (in the data box at the  
bottom of the screen).  
CANCEL/HL OFF: Remove data of cursor-selected tracked target from the data box; stops  
tracking cursor-selected target (when its data is not displayed in the data box).  
MENU: Access the Target and ARP menus for ARP operations.  
Trackball: Choose target to acquire, cancel tracking or show target data.  
3.3  
ARP Display On/Off  
You may turn off the ARP display as shown below.  
1. Press the MENU key to display the main menu.  
2. Use the trackball to choose ARP and press the ENTER key.  
ARP  
Menu  
Brill/Color  
Display  
Echo  
Target Trails  
Mark  
Display  
: Off  
: Green  
: Off  
Symbol Color  
Auto Acquire  
All Cancel  
Custom 1  
Custom 2  
Custom 3  
Tuning  
GPS Buoy  
Target  
ARP  
AIS  
GPS  
System  
[ENTER]: Enter [CANCEL/HL OFF]: Back  
[MENU]: Exit  
ARP menu  
3. Use the trackball to choose Display and press the ENTER key.  
Off  
On  
4. Choose Off or On as appropriate and press the ENTER key.  
5. Press the MENU key to close the menu.  
3-2  
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3. ARP OPERATION  
3.4 Acquiring and Tracking Targets  
Ten targets may be acquired and tracked manually and automatically. When you attempt to  
acquire an 11th target, the message "ARP FULL - ALREADY TRACKING 10 TARGETS!" appears  
for five seconds. To acquire another target, terminate tracking of an unnecessary target, as shown  
in the paragraph 3.5.  
3.4.1  
Manual acquisition  
When the automatic acquisition (AUTO ACQ. AREA) is set to on, up to five targets may be  
acquired manually. If you attempt to acquire a sixth target, the alert message appears.  
1. Place the cursor on the target to acquire.  
2. Press the ENTER key twice.  
The plot symbol changes over time as below. A vector appears about one minute after acquisition,  
indicating the target's motion trend. The target number is the youngest empty number.  
Vector  
01  
1 min. after  
acquisition  
01  
3 min. after  
acquisition  
Target number  
01  
At acquisition  
ARP target mark  
3.4.2  
Automatic acquisition  
The ARP can acquire up to ten targets automatically by setting an automatic acquisition area.  
When automatic acquisition is selected after acquiring targets manually, only the remaining  
capacity for targets may be automatically acquired. For example, if seven targets have been man-  
ually acquired, three targets may be automatically acquired.  
The automatic acquisition area is 2.0 to 2.5 miles in range and ±45° on either side of the heading  
line in bearing. Targets being tracked in automatic acquisition are continuously tracked when  
switching to manual acquisition.  
Automatic acquisition area  
45° port  
2.0 - 2.5 nm  
45° starboard  
Automatic acquisition area  
1. Press the MENU key to show the main menu.  
2. Choose ARP and press the ENTER key  
3. Choose Auto Acquire and press the ENTER key.  
Off  
On  
3-3  
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3. ARP OPERATION  
4. Choose On to enable automatic acquisition.  
5. Press the ENTER key.  
6. Press the MENU key to close the menu.  
3.5  
Terminating Tracking of ARP Targets  
When ten targets have been acquired, no more acquisition occurs unless targets are cancelled. If  
you need to acquire additional targets, you must first cancel one or more individual targets, or all  
targets, using one of the procedures below.  
3.5.1  
Terminating tracking of selected targets  
1. Place the cursor on the target to terminate tracking.  
2. Press the CANCEL/HL OFF key to terminate tracking and erase the ARP symbol. A few  
beeps sound and the symbol is erased from the display.  
3.5.2  
Terminating tracking of all targets  
1. Press the MENU key to open the menu.  
2. Choose ARP and press the ENTER key.  
3. Choose All Cancel and press the ENTER key. The prompt shown below appears.  
Are you sure?  
Yes  
No  
4. Choose Yes and pressthe ENTER key to terminate tracking on all ARP targets.  
5. Press the MENU key to close the menu.  
3-4  
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3. ARP OPERATION  
3.6 Vector Attributes  
What is a vector?  
A vector is a line extending from a tracked target which shows estimated speed and course of the  
target. The vector tip shows an estimated position of the target after the selected vector time  
elapses. It can be useful to extend the vector length (time) in order to evaluate the risk of collision  
with any target.  
Vector  
Vector  
Vector time, vector reference  
Vector time can be set to 30 seconds, 1, 3, 6, 15 or 30 minutes. You may reference the vectors to  
North (True, requires heading and speed data) or ship's heading (relative) as desired.  
1. Press the MENU key to open the menu.  
2. Choose Target and press the ENTER key.  
Target  
Menu  
Brill/Color  
Display  
Echo  
Target Trails  
Mark  
Custom 1  
Custom 2  
Custom 3  
Tuning  
GPS Buoy  
Target  
Vector Time  
Vector Reference  
History Dots  
History Intervals  
CPA  
: 6min  
: Relative  
: 5  
: 1min  
: Off  
TCPA  
: 1min  
: Off  
Proximity Alarm  
ARP  
AIS  
GPS  
System  
[ENTER]: Enter [CANCEL/HL OFF]: Back  
[MENU]: Exit  
Target menu  
3. Choose Vector Time and press the ENTER key.  
4. Choose desired vector time and press the ENTER key.  
5. Choose Vector Reference and press the ENTER key.  
30sec  
1min  
3min  
6min  
15min  
30min  
6. Choose Relative or True as appropriate and press the ENTER  
key.  
Relative: Other ships move relative to own ship. This mode is  
useful as an anti-collision aid. If a vessel is on a collision course  
with own ship its vector will be pointing toward own ship position.  
True: Own ship and other ships move at true motions and speeds.  
This mode is useful for discriminating between moving and sta-  
tionary targets. Press the MENU key to close the menu.  
Vector time choices  
Relative  
True  
Vector reference choices  
The functions of the Target menu are commonly shared  
by ARP and AIS.  
Note  
3-5  
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3. ARP OPERATION  
3.7  
History Display (target past position)  
This radar can display time-spaced dots (maximum ten dots) marking the past positions of any  
ARP or AIS target being tracked. You can evaluate a target's actions by the spacing between dots.  
Below are examples of dot spacing and target movement.  
(a) Ship turning  
(b) Ship running  
straight  
(d) Ship increased  
speed  
(c) Ship reduced  
speed  
Target movement and history display  
You may choose the number of history dots to display and the time interval to display them.  
1. Press the MENU key to open the menu.  
2. Choose Target and press the ENTER key.  
3. Choose History Dots and press the ENTER key.  
Off  
5
10  
4. Choose number of history dots to display (5 or 10) or choose Off to turn off the history display.  
5. Press the ENTER key.  
6. Choose History Intervals and press the ENTER key.  
15sec  
30sec  
1min  
2min  
3min  
6min  
12min  
7. Choose appropriate time interval and press the ENTER key.  
8. Press the MENU key to close the menu.  
3-6  
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3. ARP OPERATION  
3.8  
ARP Target Data  
You can show target data (range, bearing, course, speed, CPA and TCPA) for two tracked ARP  
targets, in the data box at the bottom of the screen. To display ARP target data, the ARP display  
must be activated and the menu item Data Box in the Display menu must be set for Target or All.  
1. Place the cursor on the ARP target for which you want to know its data.  
2. Press the ENTER key to show the target’s data.  
0.5  
NM  
3
(A)01  
ARP target  
selected for  
data display  
A(or B)  
denotes data  
box location.  
+
ARP target  
02  
+ 110.1°R 2.525 NM  
A
B
Data box A  
Data box B  
Data box (A or B)  
Vector reference  
Vector time  
Target no.  
TRUE 5 min  
No.01  
A
BRG 236.5  
CSE 33.7  
°
°
T RNG 1.850NM CPA 1.84NM  
SPD 12.34kt TCPA 12:00  
Bearing, range, CPA  
Course, speed, TCPA  
ARP target data  
The target is enlarged and its target number is prefixed with (A) or (B) to show which data box its  
data appears in. The box is automatically chosen on a first-in, last-out basis. For example, if both  
data box A and data box B are currently showing data and target A was selected before target B,  
the data in data box A will be erased and replaced with the data of the newly selected target.  
To remove a target’s data from a data box, place the cursor on its target symbol and press the  
CANCEL/HL OFF key.  
3-7  
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3. ARP OPERATION  
3.9  
CPA/TCPA Alarm  
When the predicted CPA of any ARP target or AIS target becomes smaller than the preset CPA  
alarm range and its predicted TCPA less than the preset TCPA alarm limit, the audio alarm sounds  
and the target plot symbol of the offending target changes to a triangle and flashes together with  
its vector. You may silence the audio alarm with the CANCEL/HL OFF key. The flashing of the  
triangle plot stops when the vessel’s CPA and TCPA are out of the CPA and TCPA alarm setting.  
The ARP continuously monitors the predicted range at the Closest Point of Approach (CPA) and  
predicted time to CPA (TCPA) of each track to own ship.  
This feature helps alert you to targets which may be on a collision course with own ship. However,  
it is important that GAIN, A/C SEA, A/C RAIN and other radar controls are properly adjusted and  
the ARP is set up so that it can track targets effectively.  
CAUTION  
The CPA/TCPA alarm should never be  
relied upon as the sole means for detect-  
ing the risk of collision. The navigator is  
not relieved of the responsibility to keep  
visual lookout for avoiding collisions,  
whether or not the radar or other plotting  
aid is in use.  
1. Press the MENU key to open the menu.  
2. Choose Target and press the ENTER key.  
3. Choose CPA and press the ENTER key.  
Off  
0.5nm  
1nm  
2nm  
3nm  
5nm  
6nm  
4. Choose appropriate CPA distance and press the ENTER key.  
5. Choose TCPA and press the ENTER key.  
30sec  
1min  
2min  
3min  
4min  
5min  
6min  
12min  
6. Choose appropriate TCPA and press the ENTER key.  
7. Press the MENU key to close the menu.  
3-8  
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3. ARP OPERATION  
3.10 Proximity Alarm  
The proximity alerts you by audio and visual alarms when an ARP target (or AIS target) is within  
the range you specify.  
1. Press the MENU key to open the menu.  
2. Choose Target and press the ENTER key.  
3. Choose Proximity Alarm and press the ENTER key.  
Off  
0.5nm  
1nm  
2nm  
3nm  
5nm  
6nm  
12nm  
24nm  
4. Choose appropriate range and press the ENTER key.  
5. Press the MENU key to close the menu.  
When an ARP target comes within the range set here its symbol becomes a flashing triangle  
and the audio alarm sounds. Press the CANCEL/HL OFF key to silence the audio alarm. The  
flashing continues until the target is no longer within the range set, the alarm range is changed  
to exclude the offending target or the proximity alarm is disabled.  
3.11 Lost Target  
When the system detects a lost target, the audio alarm sounds, the target symbol becomes a  
flashing diamond and tracking is discontinued after one minute.  
01  
Lost target mark  
Canceling a lost target  
Place the cursor on the target and press the CANCEL/HL OFF key. The audio alarm sounds and  
the target symbol (and its data if displayed) is erased.  
3-9  
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3. ARP OPERATION  
3.12 Symbol Color  
You may choose the ARP/AIS symbol color from among Green, Red, Blue, White or Black.  
1. Press the MENU key to open the menu.  
2. Choose ARP and press the ENTER key.  
3. Choose Symbol Color and press the ENTER key.  
Green  
Red  
Blue  
White  
Black  
4. Choose appropriate color and press the ENTER key.  
5. Press the MENU key to close the menu.  
3-10  
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4. AIS OPERATION  
Connected to the FURUNO AIS Transponder FA-150, the FR-8xx2 series can show the name,  
position and other nav data of the nearest 100 AIS transponder-equipped ships. (For connection  
of other makes of AIS transponders, AIS Interface IF-1500AIS (option) is required.)  
This radar accepts position data fixed by WGS-84 geodetic datum. Set the datum to WGS-84 on  
the GPS navigator connected to this radar. If this radar is interfaced with the FURUNO GPS Nav-  
igator GP-320B, see paragraph 5.2 for the procedure. Additionally, confirm that Mode on the GPS  
menu is set to GPS or WAAS, referring to page 5-1. The AIS function is inoperative if the mode is  
DGPS.  
4.1  
Controls for Use with AIS  
ENTER: Press, after choosing target with the trackball, to display data for selected active AIS  
target (in the data box at the bottom of the screen).  
CANCEL/HL OFF: Remove data of cursor-selected AIS target from the data box.  
MENU: Access the Target and AIS menus for AIS operations.  
Trackball: Choose active target to display its data.  
4.2  
Turning the AIS Display On or Off  
You may turn the AIS display on or off. The system continues processing AIS targets regardless  
of whether the AIS display is on or off, provided the AIS transponder is turned on.  
1. Press the MENU key to display the main menu.  
2. Choose AIS and press the ENTER key.  
AIS  
Menu  
Brill/Color  
Display  
Echo  
Display  
Symbol Color  
Range  
: Off  
: Green  
: 24.0nm  
Target Trails  
Mark  
Sector Start  
Sector End  
Sort By  
: 340°  
: 20°  
: Range  
Custom 1  
Custom 2  
Custom 3  
Tuning  
GPS Buoy  
Target  
Number of Targets : 30  
ARP  
AIS  
GPS  
System  
[ENTER]: Enter [CANCEL/HL OFF]: Back  
[MENU]: Exit  
AIS menu  
3. Choose DIsplay and press the ENTER key.  
4. Choose Off (all AIS symbols are erased) or On (all AIS-received targets are displayed) as  
appropriate and press the ENTER key.  
5. Press the MENU key to close the menu.  
4-1  
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4. AIS OPERATION  
4.3  
AIS Symbols  
When the AIS is turned on, AIS targets are marked with appropriate AIS symbol as below.  
Sleeping target  
Activated target  
Dangerous  
target  
Lost target  
Target selected  
for data display  
AIS symbols  
AIS symbols are momentarily erased after the screen is redrawn when the heading  
is changed while using the head-up mode.  
Note  
4.4  
Activating, Sleeping Targets  
When you convert a sleeping target to an activated target, that target's course and speed are  
shown with a vector. You can easily judge target movement by monitoring the vector.  
SOG (Speed Over Ground) and  
Course over Ground (COG) vector  
ROT  
(Rate of Turn)  
Heading line  
(If there is no heading data,  
the line points in direction of COG.)  
Appearance of an activated target  
To activate a target: Place the cursor on the target and press the ENTER key.  
To sleep a target: Place the cursor on the target and press the CANCEL HL/OFF key.  
4-2  
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4. AIS OPERATION  
4.5  
Displaying AIS Target Data  
The data box at the bottom of the screen can show the data (MMSI No., ship name, bearing,  
course, range, CPA and TCPA) for up to two AIS targets. (Set Data Box in the Display menu to  
Target or All to show AIS target data.)  
To show AIS target data, place the cursor on the activated target that you want to know its data  
and press the ENTER key.  
0.5  
NM  
3
+
AIS target selected for  
data display  
(A or B: Data box location  
(A)  
000000026  
9-digit no.: MMSI)  
+
Cursor  
+ 110.1°R 2.525 NM  
B
A
Data box A  
Data box B  
Data box (A or B)  
Vector reference  
MMSI of vessel  
Vector time  
Name of  
vessel  
TRUE 5 min  
MMSI: 000000026  
A
NAME: PEGASUS  
LENGTH: 100M BEAM: 45M  
Length, Beam  
of vessel  
BRG 236.5°T RNG 1.850NM CPA 1.84NM  
Bearing, range, CPA  
Course, speed, TCPA  
CSE 33.7° SPD 12.34kt TCPA 12:00  
AIS data  
The AIS target chosen is marked with MMSI no. and the alphabet A or B, which corresponds to  
the data box in which the target’s data appears. The box is automatically chosen on a first-in, last-  
out basis. For example, if both data box A and data box B are currently showing data and target  
A was selected before target B, the data in data box A will be erased and replaced with the data  
of the newly selected AIS target.  
To remove a target’s data from a data box, place the cursor on its target symbol and press the  
CANCEL/HL OFF key.  
4-3  
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4. AIS OPERATION  
4.6  
Display Range  
You may set the AIS target display range as below to view only those AIS targets within the range  
you specify. The setting range is 0.1-72 miles (96 miles for FR-8252) but actual range depends  
on the AIS Transponder. If the target sorting method is selected to “Range,” the target data within  
the range set here is transmitted to this radar.  
1. Press the MENU key to open the menu.  
2. Choose AIS and press the ENTER key.  
3. Choose Range and press the ENTER key.  
24nm  
(0.1nm-96.0nm)  
4. Use the trackball to set the display range and press the ENTER key.  
5. Press the MENU key to close the menu.  
4.7  
Sorting Targets  
You may sort the data of AIS targets received from the AIS transponder by range from own ship,  
by sector, by CPA or TCPA.  
1. Press the MENU key to open the menu.  
2. Choose AIS and press the ENTER key.  
3. Choose Sort By and press the ENTER key.  
Range  
Sector  
CPA  
TCPA  
4. Use the trackball to choose desired sorting method and press the ENTER key.  
Range: Sort targets within the display range set (see paragraph 4.6), from nearest to furthest.  
Sector: Sort targets within the display sector set (see paragraph 4.8) and within 24 nm, from  
nearest to furthest.  
CPA: Sort by CPA, from closest to furthest.  
TCPA: Sort by TCPA, from earliest time to latest time.  
5. Press the MENU key to close the menu.  
4-4  
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4. AIS OPERATION  
4.8  
Displaying Targets Within a Specific Sector  
You may choose to display AIS targets only within a specific sector. If the target sorting method  
is selected to “Range,” the target data within the sector set here is transmitted to this radar.  
1. Press the MENU key to open the menu.  
2. Choose AIS and press the ENTER key.  
3. Choose Sector Start and press the ENTER key.  
340  
°
(0 -359  
°
°)  
4. Use the trackball to set the start point for the sector and press the ENTER key.  
5. Choose Sector End and press the ENTER key.  
20°  
(0°-359°)  
6. Use the trackball to set the end point for the sector and press the ENTER key.  
7. Press the MENU key to close the menu.  
4.9  
Number of Targets to Display  
You may choose the number of AIS targets to display, from 10-100. This feature is useful when  
the screen becomes cluttered with AIS targets. Targets are selected and displayed according to  
sort method. (See paragraph 4.7.)  
1. Press the MENU key to open the menu.  
2. Choose AIS and press the ENTER key.  
3. Choose Number of Targets and press the ENTER key.  
30  
(0-100)  
4. Use the trackball to choose the number of targets to display and press the ENTER key.  
Press the MENU key to close the menu.  
4-5  
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4. AIS OPERATION  
4.10 Vector Attributes  
What is a vector?  
A vector is a line extending from a tracked target which shows estimated course of the AIS target.  
The vector tip shows an estimated position of the target after the selected vector time elapses. It  
can be useful to extend the vector length (time) in order to evaluate the risk of collision with any  
target. (See the illustration on page 4-2 for the appearance of a vector.)  
Vector time, vector reference  
Vector time can be set to 30 seconds, 1, 3, 6, 15 or 30 minutes. Vectors may be displayed in True  
or Relative motion.  
1. Press the MENU key to open the menu.  
2. Choose Target and press the ENTER key.  
Target  
Menu  
Brill/Color  
Display  
Echo  
Target Trails  
Mark  
Custom 1  
Custom 2  
Custom 3  
Tuning  
GPS Buoy  
Target  
Vector Time  
Vector Reference  
History Dots  
History Intervals  
CPA  
: 6min  
: Relative  
: 5  
: 1min  
: Off  
TCPA  
: 1min  
: Off  
Proximity Alarm  
ARP  
AIS  
GPS  
System  
[ENTER]: Enter [CANCEL/HL OFF]: Back  
[MENU]: Exit  
Target menu  
3. Choose Vector Time and press the ENTER key.  
4. Choose desired vector time and press the ENTER key.  
5. Choose Vector Reference and press the ENTER key.  
30sec  
1min  
3min  
6. Choose Relative or True as appropriate and press the ENTER key.  
Relative: Other ships move relative to own ship. This mode is  
useful as an anti-collision aid. If a vessel is on a collision course  
with own ship its vector will be pointing toward own ship position.  
True: Own ship and other ships move at true motions and speeds.  
This mode is useful for discriminating between moving and sta-  
tionary targets. Press the MENU key to close the menu.  
6min  
15min  
30min  
Vector time choices  
Relative  
True  
7. Press the MENU key to close the menu.  
Vector reference choices  
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4. AIS OPERATION  
4.11 History Display (target past position)  
This radar can display time-spaced dots (maximum ten dots) marking the past positions of any  
AIS target being tracked. You can evaluate a target's actions by the spacing between dots. Below  
are examples of dot spacing and target movement.  
(a) Ship turning  
(b) Ship running  
straight  
(d) Ship increased  
speed  
(c) Ship reduced  
speed  
Target movement and history display  
You may choose the number of history dots to display and the time interval to display them.  
1. Press the MENU key to open the menu.  
2. Choose Target and press the ENTER key.  
3. Choose History Dots and press the ENTER key.  
Off  
5
10  
4. Choose number of history dots to display (5 or 10) or choose Off to turn off the history display.  
5. Press the ENTER key.  
6. Choose History Intervals and press the ENTER key.  
15sec  
30sec  
1min  
2min  
3min  
6min  
12min  
7. Choose appropriate time interval and press the ENTER key.  
8. Press the MENU key to close the menu.  
4-7  
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4. AIS OPERATION  
4.12 CPA/TCPA Alarm  
When the predicted CPA of any AIS target or ARP target becomes smaller than the preset CPA  
alarm range and its predicted TCPA less than the preset TCPA alarm limit, an audio alarm sounds  
and the symbol of the offending AIS target changes to the dangerous target symbol.  
Triangle is thicker  
than that of active  
target  
Dangerous target symbol  
You may silence the audio alarm with the CANCEL/HL OFF key. The flashing of the symbol stops  
when the target’s CPA and TCPA become greater than the CPA and TCPA alarm setting. Pre-  
dicted range at the Closest Point of Approach (CPA) and predicted time to CPA (TCPA) of each  
AIS target are monitored.  
This feature helps alert you to targets which may be on a collision course with own ship.  
1. Press the MENU key to open the menu.  
2. Choose Target and press the ENTER key.  
3. Choose CPA and press the ENTER key.  
Off  
0.5nm  
1nm  
2nm  
3nm  
5nm  
6nm  
4. Choose appropriate CPA distance and press the ENTER key.  
5. Choose TCPA and press the ENTER key.  
30sec  
1min  
2min  
3min  
4min  
5min  
6min  
12min  
6. Choose appropriate TCPA and press the ENTER key.  
7. Press the MENU key to close the menu.  
4-8  
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4. AIS OPERATION  
4.13 Proximity Alarm  
The proximity alerts you by audio and visual alarms when an AIS target (or ARP target) is within  
the range you specify.  
1. Press the MENU key to open the menu.  
2. Choose Target and press the ENTER key.  
3. Choose Proximity Alarm and press the ENTER key.  
Off  
0.5nm  
1nm  
2nm  
3nm  
5nm  
6nm  
12nm  
24nm  
4. Choose appropriate range and press the ENTER key.  
5. Press the MENU key to close the menu.  
When an AIS target comes within the range set here its symbol flashes and the audio alarm  
sounds. Press the CANCEL/HL OFF key to silence the audio alarm. The flashing continues  
until the target is no longer within the range set, the alarm range is changed to exclude the  
offending target or the proximity alarm is disabled.  
4.14 Lost Target  
When AIS data is not received from a target at prescribed interva (3-5* report intervals), the audio  
alarm sounds and the target symbol (flashing) appears as below.  
Lost target symbol  
* The interval at which AIS data is sent depends on speed of AIS transponder equipped vessel,  
and it is shown in the table below. For further details, consult the operator’s manual for the AIS  
transponder.  
Ship speed and reporting interval  
Ship speed  
0-14 kts  
23 kts or higher  
Reporting interval  
Every 10 seconds  
Every two seconds  
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4. AIS OPERATION  
4.15 Symbol Color  
You may choose the ARP/AIS symbol color from among Green, Red, Blue, White or Black.  
1. Press the MENU key to open the menu.  
2. Choose ARP and press the ENTER key.  
3. Choose Symbol Color and press the ENTER key.  
Green  
Red  
Blue  
White  
Black  
4. Choose appropriate color and press the ENTER key.  
5. Press the MENU key to close the menu.  
4-10  
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5. GPS OPERATION  
If you are using the FURUNO GPS Navigator GP-320B, you may set it up from this radar.  
5.1  
Navigator Type  
1. Press the MENU key to show the menu.  
2. Choose GPS and press the ENTER key.  
GPS  
Menu  
Brill/Color  
Display  
Echo  
Target Trails  
Mark  
Custom 1  
Custom 2  
Custom 3  
Tuning  
GPS Buoy  
Target  
Type  
: WAAS  
: WGS-84  
: 001  
Datum  
Datum Number  
WAAS  
: Auto  
WAAS Number  
GPS Self Test  
Satellite Monitor  
Type 16 Message  
Forward Offset  
Right Offset  
Cold Start  
: 120  
: 0  
: 0  
ARP  
AIS  
GPS  
System  
[ENTER]: Enter [CANCEL/HL OFF]: Back  
[MENU]: Exit  
GPS menu  
3. Choose Type and press the ENTER key.  
GPS  
WAAS  
DGPS  
4. Choose type of navigator connected to this radar and press the ENTER key. Note that GPS or  
WAAS should be selected if this radar is interfaced with an AIS Transponder. The AIS Tran-  
sponder will be inoperative if DPGS is selected.  
GPS: GPS Navigator GP-320B connected  
WAAS: GPS Navigator GP-320B connected  
DGPS: DPGS Beacon Receiver GR-80 connected.  
5. Press the MENU key to close the menu.  
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5. GPS OPERATION  
5.2  
Datum  
Choose the datum type which matches the paper nautical charts you are using. Choose WGS-84  
if the radar is connected to an AIS Transponder.  
1. Press the MENU key to show the menu.  
2. Choose GPS and press the ENTER key.  
3. Choose Datum and press the ENTER key.  
WGS-84  
Tokyo  
Other  
4. Choose appropriate datum type and press the ENTER key. For Other, do steps 5 and 6. For  
other choices, go to step 7.  
5. Choose Datum Number and press the ENTER key.  
001  
6. Use the trackball to choose datum number and press the ENTER key. (The seting range is 001-  
192 and 201-254.)  
7. Press the MENU key to close the menu.  
5.3  
WAAS Setup  
Geostationary satellites, the type used with WAAS, provide more accurate positon data when  
compared to GPS or DGPS. These satellites may be tracked automatically or manually. Auto  
tracking automatically searches for the best geostationary satellite based on your current position.  
1. Press the MENU key to show the menu.  
2. Choose GPS and press the ENTER key.  
3. Choose WAAS and press the ENTER key.  
Auto  
Manual  
4. Choose Auto or Manual as appropriate and press the ENTER key. For Manual, do steps 5 and  
6. For Auto, go to step 7.  
5. Choose WAAS Number and press the ENTER key.  
120  
6. Use the trackball to choose appropriate WAAS satellite number and press the ENTER key.  
7. Press the MENU key to close the menu.  
5-2  
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5. GPS OPERATION  
5.4  
Satellite Monitor  
The Satellite Monitor provides comprehensive information about GPS and WAAS satellites. For  
more detailed information, see your GPS navigator’s owner’s manual.  
1. Press the MENU key to show the menu.  
2. Choose GPS and press the ENTER key.  
3. Choose Satellite Monitor and press the ENTER key.  
DOP (Dilution of Precision, 0-99.0)  
SNR of tracked GPS satellites  
North  
marker  
Satellites whose SNR is above  
40 are used to fix position.  
GPS mode  
2D, 3D, D2D  
D3D, W2D  
Satellite Monitor  
Satellite No  
SNR  
50  
W3D, DOP  
30  
40  
D3D  
DOP  
1.5  
N
GPS satellite  
no.  
GPS 0011  
31  
12  
18  
19  
06  
07  
09  
24  
08  
16  
13  
24  
13  
13  
12  
01  
09  
WAAS  
satellite*  
W
06  
07  
19  
Satellites in ring  
have elevation  
18  
angle of 5  
°
16  
Altitude  
85m  
Satellites in ring  
have elevation  
DGPS Status  
angle of 45  
°
OK or NG (No Good) displayed  
OK or NG (No Good) displayed  
0-99 db, higher the better  
Station Health  
DGPS Data  
Signal Strength  
Signal SNR  
OK  
OK  
10dB  
11dB  
122  
WAAS  
0-99 db, higher the better  
[MENU]: Close MENU [ENTER]: Close this window  
* Satellites used to fix  
position are shown in red.  
WAAS satellite  
Altitude of  
GPS antena  
from sea  
Satellite monitor  
To close only the satellite monitor display, press the ENTER key.  
5-3  
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5. GPS OPERATION  
5.5  
DIsplaying Type 16 Message  
The type 16 message, available with connection of a DGPS beacon receiver (FURUNO FR-80,  
etc.) and within range of a DGPS beacon reference station, provides weather information (time,  
wind direction and speed, atmospheric pressure and wave height). It is transmitted every minutes  
by the Japan Maritime Safety Agency, and two reports are provided for each observation point.  
1. Press the MENU key to show the menu.  
2. Choose GPS and press the ENTER key.  
3. Choose Type 16 Message and press the ENTER key. (If no messages are present you cannot  
choose this menu item.)  
Time  
Wind direction  
and speed  
(16 compass pts.)  
Atmospheric  
pressure (0-9999 hPa)  
Wave height  
(0-99 m)  
Type 16 Message  
Point Name  
Murotasaki  
Time  
Wind  
Direction/Speed  
Pressure  
1015hPa  
Wave  
Name of DGPS  
reference station  
13:25  
13:55  
ENE  
NE  
5m  
10m  
13m  
10m 1016hPa  
13:50  
13:55  
N
NW  
5m 1017hPa  
10m 1017hPa  
9m  
10m  
Kobe  
Osakako  
Oseki  
13:45  
13:15  
NW  
N
5m  
1015hPa  
11m  
10m  
10m 1017hPa  
Latest six  
messages  
13:35  
13:05  
SSW  
S
5m 1013hPa  
10m 1015hPa  
8m  
9m  
Tomgashima  
Shinomisaki  
13:30  
13:00  
NW  
W
5m  
1015hPa  
5m  
10m  
10m 1016hPa  
13:30  
13:00  
NW  
W
5m 1015hPa  
10m 1016hPa  
5m  
10m  
[MENU]: Close MENU [ENTER]: Close this window  
Type 16 message  
Weather messages from as many as six DPGS reference stations are shown and the latest is  
at the top.The oldest message is erased when a new message arrives.  
4. To close only the message board, press the ENTER key.  
5-4  
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5. GPS OPERATION  
5.6  
GPS Sensor Installation Position Offset  
The installation position of the GPS sensor antenna and the radar antenna must be the same in  
order to get accurate position information on the radar. If they are different, measure the distance  
between the GPS sensor antenna and the radar antenna, in the bow/stern and/or port/starboard  
direction, and enter those distances in the menu as follows:  
1. Press the MENU key to show the menu.  
2. Choose GPS and press the ENTER key.  
3. Choose Forward Offset (bow or stern offset) or Right Offset (port or starboard offset), the direc-  
tion of the offset, and press the ENTER key.  
+ 0m  
(-999m-+999m)  
4. Measure the distance from the GPS sensor position to the radar antenna and use the trackball  
to set value. Enter a “+” value for bow direction or port direction offset; a “-” value for stern  
direction or starboard direction offset.  
5. Press the ENTER key  
6. Press the MENU key to close the menu.  
5-5  
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5. GPS OPERATION  
5.7  
Cold Start  
Cold start, which clears the Almanac from the GPS receiver, may be necessary in the following  
conditions:  
• If the GPS receiver has been powered off for a long period of time.  
• The vessel has moved far away from the previous fixing position (e.g., more than 500 km).  
• Other reason that prevents the receiver from finding its position within five minutes after power  
on.  
To perform cold start, do the following:  
1. Press the MENU key to show the menu.  
2. Choose GPS and press the ENTER key.  
3. Choose Cold Start and press the ENTER key.  
Are you sure?  
Yes  
No  
4. Choose Yes and press the ENTER key. (To stop cold start, press CANCEL/HL OFF key instead  
of the ENTER key.  
5. Press the MENU key to close the menu.  
5-6  
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6. MAINTENANCE &  
TROUBLESHOOTING  
This chapter provides the necessary procedures for maintenance and troubleshooting. Follow the  
recommend procedures to keep your radar in good working order.  
WARNING  
Do not open the equipment.  
Hazardous voltage which can  
cause electrical shock exists  
inside the equipment. Only  
qualified personnel should  
work inside the equipment.  
Turn off the radar power  
switch before servicing the  
antenna unit. Post a warn-  
ing sign near the switch  
indicating it should not be  
turned on while the antenna  
unit is being serviced.  
Prevent the potential risk of  
being struck by the rotating  
antenna and exposure to  
RF radiation hazard.  
Wear a safety belt and hard  
hat when working on the  
antenna unit.  
Serious injury or death can  
result if someone falls from  
the radar antenna mast.  
6-1  
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6. MAINTENANCE & TROUBLESHOOTING  
6.1  
Preventive Maintenance  
Regular maintenance is important for optimum performance. A maintenance program should be  
established and should at least include the items shown in the table below.  
Maintenance  
Interval  
When  
Item  
Check point  
Remedy  
LCD  
The LCD will, in time,  
Wipe the LCD carefully to prevent  
necessary  
accumulate a coating of scratching, using tissue paper and an  
dust which tends to dim LCD cleaner. To remove dirt or salt  
the picture.  
deposits, use an LCD cleaner, wiping  
slowly with tissue paper so as to dissolve  
the dirt or salt. Change paper frequently  
so the salt or dirt will not scratch the  
LCD. Do not use solvents such as  
thinner, acetone or benzene for  
cleaning. They may remove paint and  
markings.  
3 to 6  
Ground terminal Check for tight  
Tighten or replace as necessary.  
months  
on display unit  
connection and rust.  
DIsplay unit  
connectors  
Check for tight  
connection.  
Tighten if loosened.  
Exposed nuts  
and bolts on  
antenna unit  
Check for corroded or  
loosened bolts.  
Clean and repaint as necessary. Sealing  
compound may be used in place of paint.  
Antenna  
radiator  
Check for dirt and cracks Clean radiator surface with freshwater-  
on radiator  
surface.  
moistened cloth. Do not use plastic sol-  
vents for cleaning.  
6-2  
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6. MAINTENANCE & TROUBLESHOOTING  
6.2 Fuse Replacement  
A fuse is in the fuse holder on the power cable and inside the power supply unit, and they protect  
the equipment from reverse polarity of the ship's mains and equipment fault. If a fuse blows, find  
out the cause before replacing it. Use the correct fuse. Using the wrong fuse will damage the  
equipment and void the warranty.  
WARNING  
Use the proper fuse.  
Use of a wrong fuse can result in damage  
to the equipment or cause fire.  
Unit and fuses  
Unit  
Type  
Code No.  
Remarks  
12 VDC  
DIsplay unit  
(fitted on power  
cable)  
FGBO 15A AC125V 000-549-014  
FGBO 10A AC125V 000-549-065  
24 VDC  
Power supply unit FGBO 15A AC125V 000-549-014  
(for FR-8252)  
12 VDC  
24 VDC  
FGBO 7A AC125V  
000-549-013  
6.3  
Magnetron Life  
When the magnetron (generates microwaves) has expired, distant targets cannot be seen on the  
display. When you feel that long range performance has decreased, contact a FURUNO agent or  
dealer about replacement of the magnetron.  
Model and magnetron  
Model  
Magnetron type  
Code no.  
Estimated life  
FR-8062  
MAF1422B  
MG4006  
000-146-871  
000-150-838  
000-146-872  
000-140-344  
Approx. 3,000 hours  
FR-8122  
FR-8252  
MAF1425B  
M1458F  
Approx 1,000 hours  
6.4 LCD Backlight Life  
The life of the LCD backlight, which provides illumination for the LCD, is approximately 4,300  
hours. The display brilliance cannot be raised when the backlight has worn out. Have a qualified  
technician replace the backlight when brilliance cannot be raised.  
Part  
Type No.  
121LHS18  
Code No.  
000-158-827-10  
Lamp holder complete set  
6-3  
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6. MAINTENANCE & TROUBLESHOOTING  
6.5  
Trackball Maintenance  
If the cursor skips or moves abnormally, you may need to clean the Trackball.  
1. Turn the retainer ring counterclockwise 45° to unlock it.  
2. Remove the retainer ring and ball.  
3. Clean the ball with a soft lint-free cloth, and blow carefully into the ball-cage to dislodge dust  
and lint.  
4. Look for a build-up of dirt on the metal rollers. If dirty, clean the rollers with a cotton swab moist-  
ened lightly with isopropyl-rubbing alcohol.  
5. Make sure that fluff from the swab is not left on the rollers.  
6. Replace the ball and retainer ring. Be sure the retainer ring is not inserted reversely.  
BRILL  
GAIN  
STBY  
TX  
PUSH AUTO/MAN  
A/C SEA  
MODE  
PUSH AUTO/MAN  
CUSTOM  
A/C RAIN  
PUSH AUTO/MAN  
+
F1  
RANGE  
-
F2  
OFF  
CENTER  
ZOOM  
TARGET  
TRAILS  
ALARM  
EBL  
VRM  
TLL  
MENU  
CANCEL  
HL OFF  
ENTER  
Trackball  
Retainer ring  
DIsplay unit  
Trackball maintenance parts are available as below.  
Part  
Type No.  
MU3721  
Code No.  
Retainer ring and ball  
000-144-645  
6-4  
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6. MAINTENANCE & TROUBLESHOOTING  
6.6  
Simple Troubleshooting  
This section provides simple troubleshooting procedures which the user can follow to restore  
normal operation. If you cannot restore normal operation do not attempt to check inside the unit.  
Any trouble should be referred to a qualified technician.  
Simple troubleshooting  
If...  
But...  
Then...  
• check for blown fuse.  
• check that the power connector is firmly  
fastened.  
you cannot turn on  
the power  
• check for corrosion on the power cable  
connector.  
• check for damaged power cable.  
• check battery for proper voltage output  
(10.8-31.2 V).  
there is no response  
when a key is  
pressed  
turn off and on the power. If there still is no  
response the key may be faulty. Contact your  
dealer for advice.  
if the power is on and nothing appears on the  
check that the antenna cable is firmly fastened.  
you operated the  
STBY/TX key to  
transmit  
display  
marks and legends no echo appears  
appears  
check that the antenna cable is firmly fastened.  
tuning is properly  
adjusted  
sensitivity is poor  
the magnetron may need to be replaced.  
Contact your dealer.  
the range is changed but radar picture does not • try to hit the RANGE key again.  
change  
• turn the display unit off and on.  
Poor discrimination  
in range  
Try to adjust A/C SEA control.  
the true motion  
• reselect the true motion mode.  
presentation is not  
working properly  
• check if heading and speed are input.  
the range rings are  
not displayed  
check that the setting of Range Rings Brill in the  
Brill/Color sub menu is set to other than Off.  
6-5  
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6. MAINTENANCE & TROUBLESHOOTING  
6.7  
Advanced-level Troubleshooting  
This paragraph describes how to cure hardware and software troubles which should be carried  
out by qualified service personnel.  
This radar equipment contains complex modules in which fault diagnosis and repair  
down to component level are not practical by users.  
Note  
Advanced-level troubleshooting  
Probable cause or  
Problem  
Remedy  
1) Replace blown fuse.  
2) Correct wiring and input voltage.  
3) Replace power supply board.  
check points  
Power cannot be  
turned on  
1) Blown fuse.  
2) Mains voltage/polarity  
3) Power supply board  
Brilliance adjusted  
but no picture  
1) SPU Board  
1) Replace SPU board.  
Antenna not rotating 1) Antenna drive mechanism 1) Replace antenna drive mechanism.  
Data and marks not 1) SPU board  
displayed in Transmit  
status  
1) Replace SPU board.  
Adjust GAIN with A/C 1) Signal cable between  
1) Check continuity and isolation of coaxial  
cable.  
2) Replace IF amplifier.  
3) Check coax line for secure connection. If  
connection is good, replace SPU board.  
antenna and display unit  
2) IF amplifier  
SEA set at minimum.  
Marksandindications  
appear but no noise  
or echo  
3) Video amplifier board  
Marks, indications  
and noise appear but  
no echo (Transmis-  
sion leak repre-  
1) Magnetron  
2) Modulator board  
3) SPU board  
1) Check magnetron current.  
2) Replace modulator board.  
3) Replace SPU board.  
senting own ship  
position is absent)  
Picture not updated 1) Bearing signal generator  
or picture freeze-up  
1) Check that signal cables are fastened  
securely.  
2) SPU board  
3) Video freeze-up  
2) Replace SPU board.  
3) Turn the radar off and on.  
Radar is properly  
tunedbut sensitivity is  
poor  
1) 2nd trace echo rejector is  
ON.  
2) Dirt on radiator face  
3) Deteriorated magnetron  
1) Turn off the 2nd-trace echo rejector, from  
the Echo menu.  
2) Clean radiator.  
3) With the radar transmitting on 48 nm  
range, check magnetron current. If cur-  
rent is below normal, magnetron may be  
defective. Replace the magnetron.  
4) Check MIC detecting current. If it is below  
normal value, MIC may have become  
detuned. MIC must be tuned.  
4) Detuned MIC  
Range changed but 1) Defective range key  
radar picture does not  
change  
1) Try to operate the RANGE key. If unsuc-  
cessful, replacement of the keypad may  
be necessary.  
2) SPU board  
2) Replace SPU board.  
3) Video freeze-up  
3) Turn radar off and on.  
6-6  
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6. MAINTENANCE & TROUBLESHOOTING  
Advanced-level troubleshooting  
Probable cause or  
check points  
Problem  
Remedy  
1) Replace SPU Board.  
Interference rejector 1) SPU Board  
is not working (inter-  
ference rejection  
level not displayed)  
Echo stretch is not  
working (Neither  
ES1, ES2 or ES3 is  
displayed)  
1) SPU Board  
1) Replace SPU Board.  
Range rings are not 1) Adjust their brilliance on the 1) Replace associated circuit board if unsuc-  
Brill/Color menu.  
2) SPU Board  
cessful.  
2) Replace SPU Board.  
displayed  
Poor discrimination in Sea clutter control not func-  
range tioning properly  
Try to adjust A/C SEA control.  
True motion presen- 1) Poor contact of MODE key. 1) Try to press the key a little harder.  
2) TM display accurate  
2) Make sure that position and heading  
inputs are accurate.  
tation not working  
properly  
Target not tracked  
correctly  
Poor definition of targets in sea Adjust A/C SEA and A/C RAIN controls.  
clutter  
6-7  
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6. MAINTENANCE & TROUBLESHOOTING  
6.8  
Diagnostic Test  
The diagnostic test checks the system for proper operation. It is primarily intended for use by ser-  
vice technicians, however the user may execute it to provide the service technician with informa-  
tion.  
1. Press the MENU key to open the menu.  
2. Use the trackball to choose Factory from the System menu and press the ENTER key.  
Factory  
Menu  
Test  
LCD Pattern  
Target Trails  
Mark  
Custom 1  
Custom 2  
Custom 3  
Tuning  
GPS Buoy  
Target  
ARP  
AIS  
GPS  
System  
Initial  
Factory  
Installation  
[ENTER]: Enter [CANCEL/HL OFF]: Back  
[MENU]: Exit  
Factory menu  
3. Use the trackball to choose Test and press the ENTER key.  
6-8  
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6. MAINTENANCE & TROUBLESHOOTING  
ROM  
: OK  
RAM  
: OK  
NMEA1  
: - -  
NMEA2  
: - -  
000  
000  
000  
RS-232C  
: - -  
PROGRAM NUMBER  
FPGA VERSION  
HEADING  
: 0359226-XX.XX  
: XXXX  
: OK  
: OK  
GYRO (AD-10) 245.2°  
BEARING  
TUNE VOLTAGE  
INDICATOR VOLTAGE  
ANTENNA ROTATION  
MOTOR VOLTAGE  
ECHO LEVEL  
TRIGGER FREQUENCY  
:
:
:
:
:
:
10.1 V  
4.2 V  
48.1 rpm  
23.4 V  
-40 dBm  
2100 Hz  
TOTAL ON TIME  
TOTAL TX TIME  
: 123456.7 h  
: 987654.3 h  
INPUT NMEA  
BWC: GPBWC, 151130. 00, 3448. 50, N, 13510. 30, E, 40. 0, T, 47. 2, M, 3. 05, N, , A*7F  
BWR:  
DBT:  
DPT:  
GGA:  
GLL:  
GNS:  
HDG:  
HDM:  
HDT:  
MTW:  
MWV:  
RMB:  
RMC:  
VHW:  
VTG:  
VWT:  
VWR:  
XTE:  
+000  
+000  
ZDA:  
ARP-11 PROGRAM NUMBER: 18590271.XX  
<REMOTE CONTROLLER>  
ARP-11  
: OK  
[MENU] x 3: Exit [F1]: Alarm Test  
DIagnostics screen  
• At the top of the screen the results of the ROM, RAM and data ports NMEA1, NMEA2  
and RS232C are displayed as OK or NG (No Good). For any NG contact your dealer for  
advice. (Ports NMEA1, NMEA2 and RS-232C require a special test connector in order  
to test them. “- -” is shown when no test connector is connected.) PROGRAM NUMBER  
and FFGA VERSION show respective program number and program version number  
(XXXX).  
• Heading and bearing signals are checked for proper input and the result displayed as  
OK or NG. Tune and indicator voltages, antenna rotation speed, antenna motor voltage,  
echo level and trigger frequency are measured and shown. TOTAL ON TIME and  
TOTAL TX TIME show the total number of hours the radar has been powered and trans-  
mitted, respectively.  
• The INPUT NMEA window shows all the NMEA sentences being input to this radar. Sen-  
tences are updated every second.  
6-9  
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6. MAINTENANCE & TROUBLESHOOTING  
• If the optional ARP board is installed, its program number and test results (OK or NG)  
are shown below the INPUT NMEA window. “--” shown with no ARP board. The radar  
must be transmitting in order to test ARP function.  
• The lamp to the left of the POWER/BRILL key and the panel backlight flash if the panel  
backlight is working properly.  
4. At the right side of the display there are squares, circles and ovals, and they are for checking  
the controls of the display unit and remote controller.  
Key check: Press each key one by one. The key’s on-screen location fills in green if the key is  
functioning normally and returns to background color when the key is released. The F1 key  
tests the buzzer. Press it again to silence the buzzer.  
Control check: The three digits below the on-screen location for the GAIN, A/C SEA and A/C  
RAIN controls show control position, and the range of indication is 0-255.  
Trackball check: The three digits below the trackball’s on-screen location show the trackball’s  
X-Y position, and the range of indication is -127 to +127.  
5. Press the MENU key three times on the display unit or remote controller to escape from the  
test.  
6.9  
LCD Test  
The LCD pattern test checks the LCD for proper display of colors.  
1. Press the MENU key to open the menu.  
2. Use the trackball to choose Factory from the System menu and press the ENTER key.  
3. Use the trackball to choose LCD Pattern and press the ENTER key. The screen is initially all  
red. Hit the MENU key to change the color of the display, in the following sequence.  
7 tones  
of gray  
BLUE  
WHITE  
BLACK  
MENU GREEN MENU  
key key  
MENU  
key  
MENU  
key  
MENU  
key  
RED  
LCD test screens  
4. Press the MENU key several times to close the menu.  
• You may cancel the test at anytime by pressing the CANCEL/HL OFF key.  
• You may adjust screen brilliance during the test with the brilliance control.  
6.10 GPS Test  
The FURUNO GPS receiver interfaced with this radar can be checked for proper operation as  
follows:  
1. Press the MENU key to open the menu.  
2. Use the trackball to choose GPS and press the ENTER key.  
3. Use the trackball to choose GPS Self Test and press the  
ENTER key. The program no. and results of the test are  
shown, as OK or NG (No Good). For NG, check the GPS  
receiver.  
GPS Self Test  
Program No. : 48502380XX  
Result  
: OK  
4. Press the MENU key to close the menu.  
XX = Program version no.  
6-10  
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APPENDIX  
MENU key  
Brill/Color  
Range Ring Brill (Off, Low, Med, High)  
Echo Color (Yellow, Green, Multi)  
Display Color (Day, Night, Twilight, User)  
Background Color (Black/Green, Black/Red, Blue/White, DK Blue/White, White/Green)  
Display  
Alarm Message  
Echo Area (Ellipse, Square)  
Watchman (Off, 5min, 10min, 20min)  
Data Box (Off, Nav, Target, All)  
Zoom Mode (Relative, True, Target)  
Function 1 Setup (See the list below; default setting is "Echo Average")  
Function 2 Setup (Same choices as above; default setting is "Auto Anti Clutter")  
Auto Gain (Rough, Moderate, Calm)  
Auto Sea (Rough, Moderate, Calm)  
Auto Rain (Rough, Moderate, Calm)  
Pulse Length (Short, Long)  
Echo  
Echo Stretch (Off, 1, 2, 3)  
Echo Average (Off, 1, 2, 3)  
Noise Rejector (Off, Low, Med, High)  
Interference Rejector (Off, Low, Med, High)  
Auto Anti Clutter (Off, On)  
Display-Dynamic (Narrow, Normal, Wide)  
Display-Curve (1, 2, 3)  
Antenna Speed (24rpm, 36rpm, 48rpm, Auto/Range)  
2nd Echo Rejector (Off, On)  
Gradation (Single, Multi)  
Color (Green, Red, Blue, White, Black)  
Mode (Relative, True)  
Level (1, 2, 3)  
Target  
Trails  
Length (Normal, 12H, 24H)  
Time (12h, 00h:30m - 12h:00m; 24H, 01h00m - 24h:00m)  
Copy (Off, On)  
Restart (Off, On)  
Narrow (Off, On)  
Own Ship (Off, On)  
All Cancel  
(Continued on next page)  
Choices for Function 1 Setup, Function 2 Setup  
Range Rings Brill  
Echo Color  
Display Color  
Background Color  
Echo Area  
Watchman Time  
Data Box  
Zoom Mode  
STBY Mode Display  
Auto Gain  
Echo Stretch  
Trails-Copy  
Trails-Restart  
Trails-Narrow  
GPS Buoy-Display  
GPS Buoy-Symbol Color AIS-Symbol Color  
GPS Buoy-History Dots  
Vector Time  
Vector Reference  
History Dots  
History Intervals  
CPA  
TCPA  
Proximity Alarm  
ARP-Display  
AIS-Display  
Echo Average  
Noise Rejector  
Interference Rejector  
Auto Anti Clutter  
Display-Dynamic  
Display-Curve  
Antenna Speed  
2nd Echo Rejector  
Trails-Gradation  
Trails-Color  
AIS-Sort By  
GPS-Mode  
GPS-Datum  
GPS-WAAS  
Trails-Own Ship  
Waypoint Mark Display  
Origin Mark Mode  
TLL Key Mode  
Parallel Line  
Parallel Line Mode  
EBL Reference  
VRM Unit  
Auto Sea  
Auto Rain  
Tuning Mode  
Pulse Length  
Trails-Mode  
Trails-Level  
Trails-Length  
Cursor Position  
Target Alarm 1 Mode  
Target Alarm 2 Mode  
ARP-Symbol Color  
ARP-Auto Acquire  
A-1  
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APPENDIX  
(Continued from previous page)  
Mark  
Waypoint Mark Display (Off, On)  
Origin Mark Mode (Relative, True)  
TLL Key Mode (TLL Output, Origin Mark, Both)  
Parallel Line (Off, 2, 3, 6)  
Parallel Line Mode (Parallel, Vertical)  
EBL Reference (Relative, True)  
VRM Unit (nm, km, sm, kyd)  
Cursor Position (Rng/Brg, Lat/Lon)  
Target Alarm1 Mode (In, Out)  
Target Alarm2 Mode (In, Out)  
Custom 1  
Custom 1 (Off, On)  
Copy  
Name (Harbor, Long, Sea, Rain, Buoy, Bird)  
Gain (Manual, Rough, Moderate, Calm)  
Sea (Manual, Rough, Moderate, Calm)  
Rain (Manual, Rough, Moderate, Calm)  
Pulse Length (Short, Long)  
Echo Stretch (Off, 1, 2, 3)  
Echo Average (Off, 1, 2, 3)  
Noise Rejector (Off, Low, Med, High)  
Interference Rejector (Off, Low, Med, High)  
Auto Anti Clutter (Off, On)  
Display-Dynamic (Narrow, Normal, Wide)  
Display-Curve (1, 2, 3)  
Antenna Speed (24rpm, 36rpm, 48rpm, Auto/Range)  
Custom 2  
Custom 2 (Off, On)  
Copy  
Name (Harbor, Long, Sea, Rain, Buoy, Bird)  
Gain (Manual, Rough, Moderate, Calm)  
Sea (Manual, Rough, Moderate, Calm)  
Rain (Manual, Rough, Moderate, Calm)  
Pulse Length (Short, Long)  
Echo Stretch (Off, 1, 2, 3)  
Echo Average (Off, 1, 2, 3)  
Noise Rejector (Off, Low, Med, High)  
Interference Rejector (Off, Low, Med, High)  
Auto Anti Clutter (Off, On)  
Display-Dynamic (Narrow, Normal, Wide)  
Display-Curve (1, 2, 3)  
Antenna Speed (24rpm, 36rpm, 48rpm, Auto/Range)  
(Continued on next page)  
A-2  
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APPENDIX  
(Continued from previous page)  
Custom 3 (Off, On)  
Custom 3  
Save  
Name (Harbor, Long, Sea, Rain, Buoy, Bird)  
Gain (Manual, Rough, Moderate, Calm)  
Sea (Manual, Rough, Moderate, Calm)  
Rain (Manual, Rough, Moderate, Calm)  
Pulse Length (Short, Long)  
Echo Stretch (Off, 1, 2, 3)  
Echo Average (Off, 1, 2, 3)  
Noise Rejector (Off, Low, Med, High)  
Interference Rejector (Off, Low, Med, High)  
Auto Anti Clutter (Off, On)  
Display-Dynamic (Narrow, Normal, Wide)  
Display-Curve (1, 2, 3)  
Antenna Speed (24rpm, 36rpm, 48rpm, Auto/Range)  
Tuning  
Tuning Mode (Auto, Manual)  
Manual Tuning (0-4095, 2048)  
Display (Off, On)  
GPS Buoy  
Symbol Color (Green, Red, Blue, White, Black)  
History Dots (Off, 5, 10, 20 (min))  
All Cancel  
Target  
Vector Time (30sec, 1min, 3min, 6min, 15min, 30min)  
Vector Reference (Relative, True)  
History Dots (Off, 5, 10)  
History Intervals (15sec, 30sec, 1min, 2min, 3min, 6min, 12min)  
CPA (Off, 0.5nm, 1nm, 2nm, 3nm, 5nm, 6nm)  
TCPA (30sec, 1min, 2min, 3min, 4min, 5min, 6min, 12min)  
Proximity Alarm (Off, 0.5nm, 1nm, 2nm, 3nm, 5nm, 6nm, 12nm, 24nm)  
ARP*1  
AIS*2  
Display (Off, On)  
Symbol Color (Green, Red, Blue, White, Black)  
Auto Acquire (Off, On)  
*1 Requires ARP board (built in)  
*2 Requires AIS transponder  
All Cancel  
Display (Off, On)  
Symbol Color (Green, Red, Blue, White, Black)  
Range (0.1-96(nm), 24.0)  
Sector Start (0-359(deg), 340)  
Sector End (0-359(deg), 020)  
Sort By (Range, Sector, CPA, TCPA)  
Number of Targets (10-100, 30)  
(Continued on next page)  
A-3  
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APPENDIX  
(Continued from previous page)  
GPS*1  
Mode (GPS, WAAS, DGPS)  
Datum (WGS-84, Tokyo, Other)  
Datum Number (001-254, 001)  
WAAS (Auto, Manual)  
WAAS Number (120-150, 120)  
GPS Self Test  
Satellite Monitor  
Type 16 Message  
Forward Offset (-999 - +999(m), 0)  
Right Offset (-999 - +999(m), 0)  
Cold Start  
System  
Initial  
Key Beep (Off, On)  
Range Unit (nm, km, sm)  
Alarm Level (Low, Med, High)  
Antenna Rotation (Rotate, Stop)  
Shift Speed (1-99(kt), 15)  
STBY Mode Display (Normal, Nav, Economy)  
Bearing Source (Magnetic, True)  
Range Preset (0.125, 0.25, 0.5, 0.75, 1, 1.5, 2, 3, 4, 6, 8, 12, 16,  
24, 36, 48, 64, 72, 96*2(nm))  
Ship Speed Unit (kt, km/h, mph)  
Depth Unit (m, ft, fa, pb, HR)  
Temperature Unit (°C, °F)  
Wind Direction (Apparent, True)  
Wind Speed Unit (kt, km/h, mph, m/s)  
Port1 (Auto, 4800bps, 38400bps)  
Port2 (Auto, 4800bps, 38400bps)  
Through Output (Off, On)  
Test  
Factory  
LCD Pattern  
Installation (For use by the installer. Not accessible by user.)  
Sector  
Sector Status (Off, On)  
Blank 1,  
Sector  
Sector Start (0-359(deg), 0)  
Sector Area (0-180(deg), 0)  
Blank 2  
*1 Requires GPS receiver.  
*2 FR-8252 only  
A-4  
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FURUNO  
FR-8xx2 Series  
SPECIFICATIONS OF MARINE RADAR  
FR-8062/FR-8122/FR-8252  
1.  
GENERAL  
Range, Pulse length & Pulse repetition rate (PRR)  
1.1  
Range (nm)  
0.125 to 1.5  
1.5 to 3  
Pulse length (µs)  
PRR (Hz approx.)  
0.08  
0.3  
2100  
1200  
600  
3 to 96  
0.8  
1.2  
1.3  
Maximum Range  
Range Resolution  
96 nm (2FR-8252), 72 nm (FR-8122 and FR-8062)  
20 m  
1.4  
1.5  
1.6  
1.7  
Bearing Resolution  
Minimum Range  
Bearing Accuracy  
1.9° (4 ft), 1.2° (6 ft)  
20 m  
±1.0°  
Range, Range Ring Accuracy 1.0% of range or 8 m, whichever is the greater  
2.  
ANTENNA UNIT  
2.1  
XN-12A (4 ft)  
2.1.1  
2.1.2  
2.1.3  
Radiator  
Slotted array  
Horizontal  
Polarization  
Antenna Rotation  
24 rpm, 36 rpm, 48 rpm, range dependent rpm. (24 rpm motor  
fixed at 24 rpm.)  
2.1.4  
2.1.5  
2.1.6  
2.1.7  
Radiator Length  
120 cm (4ft)  
1.9°  
Horizontal Beamwidth  
Vertical Beamwidth  
Sidelobe Attenuation  
22°  
-24 dB or less (within ±10° of main-lobe)  
-30 dB or less (±10° of main-lobe or more)  
2.2  
XN-13A (6 ft)  
Radiator  
2.2.1  
2.2.2  
2.2.3  
Slotted array  
Horizontal  
Polarization  
Antenna Rotation  
24 rpm*, 36 rpm, 48 rpm, range dependent rpm. (24 rpm motor  
fixed at 24 rpm.) * Not available with antenna XN-13A.  
2.2.4  
2.2.5  
2.2.6  
2.2.7  
Radiator Length  
180 cm (6 ft)  
1.35°  
Horizontal Beamwidth  
Vertical Beamwidth  
Sidelobe Attenuation  
22°  
-28 dB or less (within ±10° of main-lobe)  
-35 dB or less (±10° of main-lobe or more)  
SP - 1  
E3539S01B  
2006/01/31  
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FURUNO  
FR-8xx2 Series  
3.  
RF TRANSCEIVER  
3.1  
Frequency and Modulation 9410 MHz ±30MHz (X band), P0N  
3.2  
3.3  
3.4  
3.5  
Peak Output Power  
Intermediate Frequency  
Tuning  
FR-8062: 6 kW, FR-8122: 12 kW, FR-8052: 25 kW  
60 MHz  
Automatic or manual  
5 dB (typical)  
Noise figure  
4. DISPLAY UNIT  
4.1  
Display  
12.1-inch rectangular TFT color LCD, 600 x 800 dots,  
Effective radar display 300 dots  
4.2  
Range, Range Ring Interval, Number of Rings  
Range  
0.125  
0.025  
5
0.25  
0.05  
5
0.5  
0.1  
5
0.75  
0.25  
3
1
0.25  
4
1.5  
0.25  
6
2
0.5  
4
3
0.5  
6
4
1
4
6
1
6
8
2
4
1
2
1
6
2
4
3
6
4
8
6
4
7
2
9
6
Ring  
2
4
4
6
8
8
1
2
1
6
Interval  
No. of  
rings  
6
4
6
6
6
4
6
6
Max. range: FR-8252: 96 nm, FR-8062, FR-8122, 72 nm  
4.3  
Markers  
Heading Line, Bearing Scale, Range Rings, Variable Range  
Marker (VRM), Electronic Bearing Line (EBL), Target Alarm  
Zone, Waypoint Mark (navigation input required), Zoom Win-  
dow  
4.4  
Alphanumeric Indications  
Range, Range Ring Interval, Interference Rejection (IR), Vari-  
able Range Marker (VRM), Electronic Bearing Line (EBL),  
Stand-by (ST-BY), Echo Averaging (EAV), TX Pulse width,  
Guard Alarm (G(IN), G(OUT)), Echo Stretch (ES), Range and  
Bearing to Cursor or Cursor Position, Echo Trail Reference,  
Echo Trail Time, Nav Data (Position, Speed, Course, etc.),  
ARP/AIS Target Data  
5.  
POWER SUPPLY  
5.1  
Rated Voltage/Current  
FR-8062 - 12-24 VDC: 3.2 A (24 V, no wind)  
FR-8122 - 12-24 VDC: 3.8 A (24 V, no wind)  
FR-8252 - 12-24 VDC: 5.0 A (24 V, no wind)  
100-115/220-230 VAC, 1 phase, 50/60 Hz  
5.2  
Rectifier (option)  
6.  
ENVIRONMENTAL CONDITIONS  
6.1  
Ambient Temperature  
Antenna Unit: -25°C to +55°C  
Display Unit: -15°C to +55°C  
Remote Controller: +5°C to +45°C  
Power Supply Unit for Antenna Unit: -15°C to +55°C  
93% or less at +40°C  
6.2  
Relative Humidity  
SP - 2  
E3539S01B  
2006/01/31  
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FURUNO  
FR-8xx2 Series  
6.3  
6.4  
Waterproofing  
Antenna Unit: IPX2  
Display Unit: IPX2 for front panel, IPX22 for rear panel  
Remote Controller: IPX4  
Power Supply Unit for Antenna Unit: IPX0  
Vibration IEC 60945-4th  
- 2Hz to 5 Hz and up to 13.2 Hz with a deviation of ±1 mm  
±10% (7 m/s2 maximum acceleration at 13.2 Hz);  
- above 13.2 Hz and up to 100 Hz with a constant maximum  
acceleration of 7 m/s2 .  
7.  
COATING COLOR  
7.1  
Display Unit  
N3.0  
N9.5  
7.2  
Antenna Unit  
SP - 3  
E3539S01B  
2006/01/31  
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FURUNO  
FR-8xx2 Series  
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SP - 4  
E3539S01B  
2006/01/31  
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INDEX  
CUSTOM key, 1-36  
Custom setup  
A
A/C RAIN control  
description, 1-36  
setting, 1-38  
adjustment method, 1-14  
automatic adjustment, 1-15  
manual adjustment, 1-15  
A/C SEA control  
adjustment method, 1-13  
automatic adjustment, 1-13, 1-15  
manual adjustment, 1-14  
Advanced-level troubleshooting, 6-6  
AIS  
D
Depth unit, 1-51  
Dynamic range, 1-45  
E
EBL  
measuring bearing by, 1-20  
reference, 1-21  
EBL key, 1-21  
Echo area, 1-49  
Echo averaging, 1-28  
Echo stretch, 1-27  
activating targets, 4-2  
controls for, 4-1  
CPA/TCPA alarm, 4-8  
display on/off, 4-1  
display range, 4-4  
display sector, 4-5  
history display, 4-7  
lost target, 4-9  
number of targets, 4-5  
proximity alarm, 4-9  
sleeping targets, 4-2  
sorting targets, 4-4  
symbol color, 4-10  
target data, 4-3  
F
F1, F2 key, 1-39  
False echoes, 2-3  
Function keys, 1-39  
Fuse replacement, 6-3  
G
GAIN control  
adjustment method, 1-12  
automatic adjustment, 1-12  
manual adjustment, 1-12  
GPS  
vector, 4-6  
Alarm message, 1-47  
Antenna speed, 1-46  
Anti-clutter, 1-15  
cold start, 5-6  
datum, 5-2  
ARP  
navigator type, 5-1  
satellite monitor, 5-3  
sensor installation offset, 5-5  
test, 6-10  
type 16 message, 5-4  
WAAS, 5-2  
acquiring targets, 3-3  
activating, deactivating, 3-2  
controls for, 3-2  
CPA/TCPA alarm, 3-8  
history display, 3-6  
lost target, 3-9  
proximity alarm, 3-9  
symbol color, 3-10  
terminating tracking of target, 3-4  
usage precautions, 3-1  
vector, 3-5  
GPS buoy  
displaying, 1-54  
erasing, 1-56  
history display, 1-55  
symbol color, 1-55  
GPS test, 6-10  
B
H
Background color, 1-42  
Heading line, 1-36  
Head-up mode, 1-8  
History display  
AIS, 4-7  
C
CANCEL/HL OFF key, 1-36  
Characteristics curve, 1-45  
Color schemes, 1-42  
Controls, 1-1  
Course-up mode, 1-9  
CPA/TCPA alarm, 4-8  
AIS, 4-8  
ARP, 3-6  
I
Indications, 1-4  
Initial menu, 1-50  
Interference rejector, 1-17  
ARP, 3-8  
Cursor, 1-16  
IN-1  
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INDEX  
Second-trace echoes, 1-40  
Sector blank, 1-52  
K
Key beep, 1-50  
Ship speed unit, 1-51  
Sidelobe echoes, 2-3  
STBY/TX key, 1-3  
System configuration, 1-xi  
System test, 6-8  
L
LCD backlight life, 6-3  
M
Magnetron life, 6-3  
Magnetron replacement, 6-3  
Maintenance  
T
Target alarm  
fuse replacement, 6-3  
LCD backlight life, 6-3  
magnetron life, 6-3  
preventive, 6-2  
alarm type, 1-23  
deactivating, 1-23  
sensitivity, 1-24  
setting, 1-22  
trackball, 6-4  
silencing, 1-22  
TARGET ALARM key, 1-22  
Target trails  
Menu, 1-5  
MENU key, 1-5  
MODE key, 1-8  
Multiple echoes, 2-3  
color, 1-31  
gradation, 1-31  
level, 1-31  
N
Navigation data  
at screen bottom, 1-44  
standby, 1-43  
Noise rejector, 1-40  
North-up mode, 1-9  
long trails, 1-33  
mode, 1-30  
narrow trails, 1-32  
own ship trail, 1-32  
restarting, 1-33  
starting, 1-29  
O
stopping, 1-29  
trail copy, 1-32  
Temperature unit, 1-51  
Tests  
OFF CENTER key, 1-24  
Offcentering the display, 1-24  
Origin mark, 1-36  
P
GPS test, 6-10  
LCD test, 6-10  
system, 6-8  
Parallel index lines  
mode, 1-35  
turning on/off, 1-34  
POWER/BRILL key, 1-3, 1-5  
Presentation mode  
course-up, 1-9  
heading, 1-8  
TLL key, 1-35  
Trackball maintenance, 6-4  
TRAILS key, 1-29  
Troubleshooting  
advanced, 6-6  
simple, 6-5  
north-up, 1-9  
true motion, 1-9  
Preventive maintenance, 6-2  
Proximity alarm  
AIS, 4-9  
ARP, 3-9  
Pulse length, 1-11  
True motion mode, 1-9  
Tuning, 1-7  
V
Virtual image, 2-4  
VRM  
measuring range by, 1-18  
unit of range measurement, 1-20  
VRM key, 1-19  
Q
Quick start, 1-3  
R
W
RACON, 2-6  
Watchman, 1-41  
Waypoint marker, 1-46  
Wind direction, 1-51  
Wind speed unit, 1-51  
Range and bearing between two targets, 1-21  
RANGE key, 1-10  
Range measurement, 1-18  
Range preset, 1-51  
Range ring brilliance, 1-18  
Range unit, 1-50  
Z
ZOOM key, 1-25  
S
SART, 2-5  
IN-2  
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FURUNO ELECTRIC CO., LTD.  
9-52 Ashihara-Cho, Nishinomiya City, 662-8580, Hyogo, Japan  
Tel: +81 798-65-2111 Fax: +81 798-65-4200  
Pub NO. DOC-858  
Declaration of Conformity  
0560  
We  
FURUNO ELECTRIC CO., LTD.  
--------------------------------------------------(-M--a-n-u-fa-c-t-u-r-e-r)----------------------------------------------------  
9-52 Ashihara-Cho, Nishinomiya City, 662-8580, Hyogo, Japan  
-------------------------------------------------------------------------------------------------------------------  
(Address)  
declare under our sole responsibility that the product  
Marine radar Type FR-8XX2 series (FR-8062, FR-8122 and FR-8252)  
--------------------------------------------(-M--o-d-e-l-n-a-m--e-, -s-e-ri-a-l-n-u-m--b-e-r)----------------------------------------------  
are in conformity with the essential requirements as described in the Directive 1999/5/EC of the  
European Parliament and of the Council of 9 March 1999 on radio equipment and  
telecommunications terminal equipment (R&TTE Directive) and satisfies all the technical regulations  
applicable to the product within this Directive  
EN 60945: 1997-01 (IEC 60945 Third edition: 1996-11) – Clauses 10.2 and 10.3  
IEC 60945 Fourth edition: 2002-08 – Clauses 9.2, 9.3, 10.3, 10.4, 10,5 and 10.8  
EN 60950 Third edition: 2000 (IEC 60950: 1999-04)  
ITU Radio Regulations (R.R.) Appendix S3. table 2  
ITU-R M.1177-3, SM.1539, SM.1541 and SM.329-9  
-------------------------------------------------------------------------------------------------------------------  
(title and/or number and date of issue of the standard(s) or other normative document(s))  
For assessment, see  
• Statement of Opinion No: 06214004/AA/00 of 19 January 2006 issued by Telefication BV, The  
Netherlands  
• EMC Test Reports FLI 12-05-048, FLI 12-05-049 and FLI 12-05-050 of 31 October 2005, FLI  
12-05-065 of 12 December 2005 and Safety Test Report FLI 12-05-064 of 20 December 2005  
prepared by Furuno Labotech International Co., Ltd., Japan  
• Test reports of unwanted emissions measurements K03-17-176, K03-17-177, K03-17-191,  
K03-17-193 and K03-17-194 of 5 January 2004 prepared by Furuno Electric Co., Ltd., Japan  
On behalf of Furuno Electric Co., Ltd.  
Hiroaki Komatsu  
Nishinomiya City, Japan  
January 23, 2006  
(Place and date of issue)  
Manager,  
International Rules and Regulations  
---------------------------------------------------  
---------------------------------------------------  
(name and signature or equivalent marking of authorized person)  
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