Furuno FR-2105 User manual

New standard of marine radar technology through
50 years of FURUNO’s marine electronics activities
21” MULTI-COLOR HIGH-PERFORMANCE
SHIPBORNE RADAR AND ARPA
MODEL FR-2105/2105-B SERIES
FURUNO ELECTRIC CO., LTD.
NISHINOMIYA, JAPAN

C
9-52, Ashihara-cho,
Nishinomiya, Japan
Telephone: [phone]
Telefax: 0798-65-4200
Your Local Agent/Dealer
A
ll rights reserved.
PUB. No. OME-34640
FR-2105/2105-B SERIES
(
TATA
)
FIRST EDITION : JUL. 1998
U : JUN. 6, 2001
Printed in Japan

i
Before turning on the radar, make sure that there is no one near the
scanner unit.
Serious injury or even death may result if a rotating antenna strikes
someone standing nearby.
DANGER
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.

ii
WARNING
ELECTRICAL SHOCK HAZARD
Do not open the equipment.
Only qualified personnel
should work inside the
equipment.
Turn off the radar power
switch before servicing the
scanner unit. Post a warn-
ing sign near the switch
indicating it should not be
turned on while the scanner
unit is being serviced.
Prevent the potential risk of
being struck by the rotating
scanner and exposure to
RF radiation hazard.
Wear a safety belt and hard
hat when working on the
scanner unit.
Serious injury or death can
result if someone falls from
the radar scanner 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.
WARNING
Do not place liquid-filled containers on
the top of the equipment.
Fire or electrical shock can result if a liquid
spills into the equipment.
Do not operate the equipment with wet
hands.
Electrical shock can result.
Keep heater away from equipment.
Heat can alter equipment shape and melt
the power cord, which can cause fire or
electrical shock.
CAUTION
Do not use the equipment for other than
its intended purpose.
Use of the equipment as a stepping stool,
for example, can result in personal injury
or equipment damage.
No one navigation device should ever be
solely replied upon for the navigation of
a vessel.
Always confirm position against all available
aids to navigation, for safety of vessel and
crew.

iii
ARPA Safety Instructions
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
a substitute for basic navigational
principles and common sense.
• 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.
• 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.
CAUTION
The plotting accuracy and response of
this auto plotter meets IMO standards.
Tracking accuracy is affected by the
following:
•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.
Display accuracy is affected by the
following:
•Echo intensity
•Radar transmission pulsewidth
•Radar bearing error
•Gyrocompass error
•Course change (own ship or target)

iv
Several labels are attached to the display
unit and scanner unit.Do not remove these labels.
If a label is peeling off or is illegible, contact a
FURUNO agent or dealer.
WARNING
To avoid electrical shock, do not
remove cover. No user-serviceable
parts inside.
<Display Unit>
Name: Warning Label (1)
Type: 86-003-1011-0
Code no.: 100-236-230
WARNING
Radiation hazard. Only qualified
personnel should work inside scanner.
Confirm that TX has stopped before
opening scanner.
<Scanner Unit>
Name: Radiation Warning
Label
Type: 03-142-3201-0
Code no.: 100-266-890
<Inside of the Display Unit>
WARNING
Display unit may fall.
Lock stay before
servicing.
Name : Warning Label
Type : 03-144-1332
Code No. : 100-266-290
WARNING
ARNING
Possibility of injuly.
Hold handle when
mounting display unit.
Name : Warning Label
Type : 03-144-1333
Code No. : 100-266-300
DANGER
ANGER
Electrical shock hazard.
Do not touch anode cap
or its cable.
Name : Danger Label
Type : 14-055-4201
Code No. : 100-243-450
DANGER
ANGER
Electrical shock hazard.
Do not touch parts inside
this cover.
Name : Danger Label
Type : 14-055-4202
Code No. : 100-245-220
DANGER
ANGER
Electrical shock hazard.
Turn off power before
servicing.
Name : Danger Label
Type : 66-022-2012
Code No. : 100-237-730

v
TABLE OF CONTENTS
INTRODUCTION ...........................................................................................................................................viii
A WORD TO THE OWNER OF FURUNO RADAR.................................................................................................VIII
SPECIFICATIONS OF FR-2105/2105-B SERIES RADAR AND ARPA.......................................................................XI
CHAPTER 1 OPERATION............................................................................................................................1.1
1.1 TURNING ON THE POWER ..............................................................................................................................1
1.2 TRANSMITTER ON.........................................................................................................................................2
1.3 CONTROL HEAD............................................................................................................................................3
1.4 CRT BRILLIANCE ..........................................................................................................................................5
1.5 TUNING THE RECEIVER .................................................................................................................................5
1.6 ON-SCREEN LEGENDS AND MARKERS............................................................................................................7
1.7 DEGAUSSING THE CRT SCREEN....................................................................................................................9
1.8 INITIALIZING THE GYRO READOUT..................................................................................................................9
1.9 PRESENTATION MODES...............................................................................................................................10
1.10 SELECTING THE RANGE SCALE..................................................................................................................13
1.11 SELECTING THE PULSELENGTH..................................................................................................................13
1.12 ADJUSTING THE SENSITIVITY .....................................................................................................................16
1.13 SUPPRESSING SEA CLUTTER.....................................................................................................................16
1.14 SUPPRESSING PRECIPITATION CLUTTER....................................................................................................18
1.15 INTERFERENCE REJECTOR........................................................................................................................18
1.16 MEASURING THE RANGE ...........................................................................................................................19
1.17 MEASURING THE BEARING.........................................................................................................................21
1.18 COLLISION ASSESSMENT BY OFFSET EBL .................................................................................................22
1.19 MEASURING RANGE AND BEARING BETWEEN TWO TARGETS......................................................................23
1.20 SETTING A TARGET ALARM ZONE ..............................................................................................................23
1.21 OFF-CENTERING.......................................................................................................................................25
1.22 ECHO STRETCH........................................................................................................................................26
1.23 ECHO AVERAGING.....................................................................................................................................27
1.24 ELECTRONIC PLOTTING AID (EPA) ............................................................................................................29
1.25 ENTERING OWN SHIP'S SPEED....................................................................................................................33
1.26 TARGET TRAILS (ECHO TRAILS).................................................................................................................35
1.27 PARALLEL INDEX LINES .............................................................................................................................38
1.28 ORIGIN MARK ...........................................................................................................................................40
1.29 ZOOM.......................................................................................................................................................41
1.30 MARKERS.................................................................................................................................................42
1.31 MENU KEYS..............................................................................................................................................43
1.32 RADAR 1, 2 AND 3 MENU SETTINGS ........................................................................................................44
1.33 FUNCTION KEYS .......................................................................................................................................46

vi
1.34 BARGE INFORMATION................................................................................................................................52
1.35 RADAR MAP..............................................................................................................................................52
1.36 SUPPRESSING SECOND-TRACE ECHOES....................................................................................................57
1.37 DISPLAYING EXTERNAL WAYPOINT AND NAVIGATION LINE ..........................................................................57
1.38 ADJUSTING BRILLIANCE OF SCREEN DATA .................................................................................................58
1.39 DISPLAY OF WIND/TIDE/DEPTH INFORMATION ............................................................................................59
1.40 ALARMS....................................................................................................................................................61
CHAPTER 2 OPERATION OF ARPA (OPTION) .........................................................................................2.1
2.1 GENERAL .....................................................................................................................................................1
2.2 KEYPADS FOR ARPA....................................................................................................................................2
2.3 ARPA MENU OPERATION .............................................................................................................................3
2.4 START-UP PROCEDURE.................................................................................................................................4
2.5 AUTOMATIC ACQUISITION ..............................................................................................................................6
2.6 MANUAL ACQUISITION.................................................................................................................................10
2.7 CHANGING PLOT SYMBOL SIZE....................................................................................................................11
2.8 ADJUSTING BRILLIANCE OF PLOT MARKS .....................................................................................................14
2.9 DISPLAYING TARGET DATA..........................................................................................................................14
2.10 VECTOR MODES........................................................................................................................................15
2.11 PAST POSITION DISPLAY...........................................................................................................................16
2.12 SET AND DRIFT (SET AND RATE) ...............................................................................................................17
2.13 SETTING CPA/TCPA ALARM RANGES.......................................................................................................18
2.14 SETTING A GUARD ZONE...........................................................................................................................19
2.15 OPERATIONAL WARNINGS .........................................................................................................................21
2.16 TRIAL MANEUVER .....................................................................................................................................23
2.17 ARPA PERFORMANCE TEST .....................................................................................................................25
2.18 CRITERIA FOR SELECTING TARGETS FOR TRACKING...................................................................................26
2.19 FACTORS AFFECTING ARPA FUNCTIONS...................................................................................................28
CHAPTER 3 RADAR OBSERVATION.........................................................................................................3.1
3.1 GENERAL .....................................................................................................................................................1
3.2 FALSE ECHOES.............................................................................................................................................3
3.3 SART (SEARCH AND RESCUE TRANSPONDER) ..............................................................................................3
3.4 RACON (RADAR BEACON)............................................................................................................................7
CHAPTER 4 OPERATION OF VIDEO PLOTTER .....................................................................................4.1
4.1 GENERAL .....................................................................................................................................................1
4.2 THE VIDEO PLOTTER DISPLAY.......................................................................................................................2
4.3 DISPLAY MODES...........................................................................................................................................2
4.4 SET- UP OF VIDEO PLOTTER DISPLAY............................................................................................................4
4.5 TRACK..........................................................................................................................................................5

vii
4.6 MARKS, LINES ..............................................................................................................................................8
4.7 WAYPOINTS..................................................................................................................................................9
4.8 NAVIGATION LINES......................................................................................................................................12
4.9 RECORDING & REPLAYING DATA .................................................................................................................14
4.10 PLOTTER PRESENTATION MODE ................................................................................................................16
4.11 INITIAL SETTINGS ......................................................................................................................................17
4.12 LATITUDE ERROR TABLE (ON 96 NM RANGE SCALR).........................................................17
CHAPTER 5 MAINTENANCE..................................................................................................................5.1
5.1 PERIODIC MAINTENANCE SCHEDULE..............................................................................................................1
5.2 LIFE EXPECTANCY OF MAJOR PARTS .............................................................................................................2
5.3 REPLACEMENT OF BATTERY ..........................................................................................................................2
CHAPTER 6 TROUBLESHOOTING........................................................................................................6.1
6.1 EASY TROUBLESHOOTING .............................................................................................................................1
6.2 ADVANCED-LEVEL TROUBLESHOOTING...........................................................................................................2
6.3 DIAGNOSTIC TEST.........................................................................................................................................4
CHAPTER 7 MENU OVERVIEW..............................................................................................................7.1
CHAPTER 8 ANLILLARY EQUIPMENT..................................................................................................8.1
8.1 PERFORMANCE MONITOR..............................................................................................................................1
8.2 INTERSWITCHING UNIT...................................................................................................................................3
8.3 FOR FISHING VESSEL....................................................................................................................................4
CHAPTER 9 DIGITAL INTERFACE (IEC61162-1)..................................................................................9.1
CHAPTER 10 PARTS LIST AND MAJOR PARTS LOCATION .............................................................10.1
Declaration of Conformity to Type (FR-21X5 series)
Declaration of Conformity (FR-2155, FR-2165DS)

viii
INTRODUCTION
A Word to the Owner of FURUNO Radar
Thank you for purchasing this FURUNO radar. We are confident you will discover why
FURUNO has become synonymous with quality and reliability.
Dedicated in the design and manufacture of marine electronics equipment for half a century,
FURUNO Electric Company has gained an unrivaled reputation as a world leader in the
industry. This is the result of our technical excellence as well as our worldwide distribution and
service network.
Please carefully read and follow the safety information and operating and maintenance
instructions set forth in this manual before attempting to operate the equipment and conduct
any maintenance. Your radar set will perform to the utmost of its ability only if it is operated
and maintained in accordance with the correct procedures.
FEATURES OF THIS SERIES OF RADARS AND ARPAs
■Daylight-bright rasterscan 21-inch multi-color, high-resolution display
■New microprocessing technology with high-speed high-density gate array and software
expertise
■New cast aluminum scanner gearbox and new series of radiators
■Easy operation by combination of discrete keys, rotary controls, and menu operation, all
logically arranged and configured
■Electronic Plotting Aid (EPA) fitted standard, Automatic Radar Plotting Aid (ARPA) option
exceeding IMO and IEC standards .
■Reliable CPA and TCPA warning in any plotting mode, accurate target data.
■Stand-alone or integrated configuration
■Meets IMO MSC.64 (61) and IEC A.823 : 1996 as a shipborne radar, high speed craft radar
A.820 (19), and ARPA A.823 (19).