Furuno FR-7041R-MARK-2 User manual

MARINE RADAR
FR-7041R-MARK-2

C
9-52, Ashihara-cho,
Nishinomiya, Japan
Telephone: [phone]
Telefax: 0798-65-4200
Your Local Agent/Dealer
A
ll rights reserved.
PUB. No. OME-34920
FR-7041R MARK-2
(
YOSH
)
FIRST EDITION : SEP. 2000
B : NOV. 7.2000
Printed in Japan

i
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 and 10 W/m2exist are given in the table
below.
Note: If the antenna unit is installed at a close distance in front of the wheel house,
your administration may require halt of transmission within a certain sector of antenna
revolution. This is possible. Ask your FURUNO representative or dealer to provide
this feature.
Radiator
type Distance to
100 W/m
2
point Distance to
10 W/m
2
point
XN-12A (4') Nil
FR-7041R-MARK-2
(X-band, 4 kW) Worst case
0.5 m
Model
DANGER
Make sure no one is in the
vicinity of the antenna unit
before turning on the radar.
Serious injury or death can
result if someone is struck
by the rotating antenna.

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
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.
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
Use the proper fuse.
Fuse rating is shown on the equipment.
Use of a wrong fuse can result in equipment
damage.
Keep heater away from equipment.
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.
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.
CAUTION
A warning label is attached to the
display and antenna units. Do not re-
move the label. If the label is missing or
damaged,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
ANTENNA UNIT
Name: Warning Label
Type: 03-142-3201-0
Code No.: 100-266-890
WARNING
Radiation hazard. Only qualified
personnel should work inside scanner.
Confirm that TX has stopped before
opening scanner.

iii
TABLE OF CONTENTS
FOREWORD ......................................................v
SYSTEM CONFIGURATION............................vii
1. OPERATION
1.1 Controls..............................................1-1
1.1.1 Display unit ................................1-1
1.1.2 Remote controller.......................1-2
1.2 Turning the Radar On and Off............1-3
1.2.1 Turning on the radar ..................1-3
1.2.2 Turning off the radar ..................1-3
1.3 Transmitting........................................1-3
1.4 Indications and Markers.....................1-4
1.5 CRT Brilliance ....................................1-4
1.6 Control Panel Illumination..................1-5
1.7 Tuning the Receiver...........................1-6
1.7.1 Automatic tuning........................1-6
1.7.2 Manual tuning ............................1-6
1.8 Selecting a Range..............................1-6
1.9 Selecting Pulselength.........................1-7
1.10 Receiver Sensitivity............................1-7
1.11 Suppressing Sea Returns..................1-7
1.12 Suppressing Precipitation Returns.....1-9
1.13 Presentation Mode.............................1-9
1.14 Menu Overview ................................1-12
1.14.1 Main menu operation...............1-12
1.14.2 OTHERS menu........................1-13
1.15 Radar Interference ...........................1-15
1.16 Erasing the Heading Marker ............1-15
1.17 Measuring the Range.......................1-16
1.17.1 Measuring range by
range rings..............................1-16
1.17.2 Measuring range by cursor......1-16
1.17.3 Measuring range by VRM........1-16
1.17.4 Unit of range measurement
for VRM and cursor.................1-17
1.18 Measuring the Bearing.....................1-17
1.18.1 Measuring bearing by the
cursor.......................................1-17
1.18.2 Measuring bearing by the
EBL.........................................1-17
1.18.3 Displaying true or relative
bearing....................................1-18
1.19 Collision Assessment by the
Offset EBL........................................1-19
1.20 Measuring Range and Bearing
Between Two Targets ...................... 1-20
1.21 Shifting the Picture........................... 1-21
1.22 Zoom................................................ 1-22
1.23 Guard Alarm .................................... 1-23
1.23.1 Selection of guard zone type...1-23
1.23.2 Setting the guard zone............ 1-24
1.23.3 Silencing the aural alarm......... 1-24
1.23.4 Canceling the guard zone
and guard alarm..................... 1-25
1.23.5 Guard alarm sensitivity............ 1-25
1.23.6 Notes on the guard alarm........1-25
1.24 Outputting Cursor Position to
Video Plotter .................................... 1-25
1.25 Echo Trails....................................... 1-26
1.25.1 Selecting trail time................... 1-26
1.25.2 Starting echo trails ..................1-26
1.25.3 Canceling echo trails............... 1-26
1.25.4 Selecting trail gradation........... 1-27
1.26 Echo Stretch.................................... 1-27
1.27 Watchman........................................ 1-28
1.27.1 Turning on watchman..............1-28
1.27.2 Canceling watchman............... 1-28
1.28 Function Keys (F1, F2).................... 1-29
1.28.1 Default settings ....................... 1-29
1.28.2 Programming the function
keys........................................ 1-29
1.29 Displaying Navigation Data ............. 1-30
1.29.1 Turning navigation data
on/off ...................................... 1-30
1.29.2 Turning the waypoint mark
on/off ...................................... 1-31
1.30 Displaying Navigation Data
in Standby........................................ 1-31
1.30.1 Displaying navigation data
in standby............................... 1-31
1.30.2 Notes on navigation data
in standby............................... 1-32
1.31 Parallel Index Lines ......................... 1-32
1.32 Economy Mode................................ 1-32
1.33 Suppressing Noise........................... 1-33
1.34 Suppressing Second-trace Echoes. 1-33
1.35 Brilliance of Characters, Markers .... 1-33
1.36 Cursor Data ..................................... 1-34

iv
1.37 Selecting Ranges to Use................ 1-34
1.38 Position Data.................................. 1-34
1.39 Dead Sector................................... 1-35
2. INTERPRETING THE DISPLAY
2.1 General............................................ 2-1
2.1.1 Minimum and maximum
ranges...................................... 2-1
2.1.2 Radar resolution........................ 2-2
2.1.3 Bearing accuracy ......................2-2
2.1.4 Range measurement.................2-2
2.2 False Echoes.................................... 2-3
2.2.1 Multiple echoes......................... 2-3
2.2.2 Sidelobe echoes........................2-3
2.2.3 Virtual image............................. 2-4
2.2.4 Shadow sectors.........................2-4
2.3 SART (Search and Rescue
Transponder) .................................... 2-5
2.3.1 General procedure for
detecting SART response........ 2-6
2.3.2 General remarks on receiving
SART........................................ 2-6
2.4 Racon (Radar Beacon)..................... 2-8
3. MAINTENANCE, TROUBLESHOOTING
3.1 Maintenance Program ...................... 3-2
3.2 Replacing the Fuse...........................3-2
3.3 Troubleshooting ................................ 3-3
3.3.1 Easy troubleshooting.................3-3
3.3.2 Advanced troubleshooting.........3-4
3.4 Diagnostics....................................... 3-6
3.5 Replacement of Magnetron............... 3-7
MENU TREE................................................ M-1
SPECIFICATIONS ......................................SP-1
INDEX
Declaration of Conformity

v
FOREWORD
A Word to the Owner of the FR-7041R-MARK-2
FURUNO Electric Company thanks you for purchasing the FR-7041R-MARK-2
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 radar is designed and constructed to meet the rigorous demands of the
marine environment. 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 purposes.
Thank you for considering and purchasing FURUNO.
Features
The FR-7041R-MARK-2 has a large variety of functions, all contained in a rugged
case.
All controls respond immediately to the operator’s command and each time a key
is pressed, the corresponding change can be seen on the screen.
The main features of the FR-7041R-MARK-2 are
•Traditional FURUNO reliability and quality.
•High definition 12-inch (30 centimeter) raster-scan display.
•Precision 1.2 meter slotted waveguide antenna capable of withstanding 70
knot wind velocity.
•Eight levels of target quantization for high target definition.
•On-screen alphanumeric readout of all operational information.
•Guard zone alarm watches for targets entering (or exiting) a guard zone.
•Operates on 12-32 V DC power.

vi
•The CRT can be set to turn off automatically during standby to reduce power
consumption.
•Ship’s position in latitude and longitude, ship’s speed, and range and bearing
to a waypoint can be shown in the bottom text area with navigation input in IEC
61162-1 (NMEA 0183) format.
•Remote controller provides armchair control of range, transmission, standby
and off centering.
•Target latitude and longitude position can be output to external equipment.
•Transmission can be prevented in a specific area. Ask you serviceman about
this feature.
•Conforms to
IEC 60936: Shipborne radar performance requirements
IEC 61162-1: Marine navigation and radiocommunication equipment and
systems – Digital interfaces – Part 1: Single talker and multiple
listeners
IEC 60945: General requirements for maritime navigation and
radiocommunication equipment

vii
SYSTEM CONFIGURATION
Antenna Unit
XN12A-RSB-0073-073
Display Unit
RDP-136
RU-3423
100 110
115 220 230 VAC
1φ, 50 60 Hz
12/24-32 VDC
Broken lines denote optional equipment.
Rectifier
Heading Sensor
Navigator
Echo Sounder
External Buzzer
OP03-173
Remote
Controller
RCU-009
Remote
Display
FMD-811
Heading Sensor
Navigator
Echo Sounder

1-1
1. OPERATION
1.1 Controls
1.1.1 Display unit
POWER
F1
F2
BRILL
SHIFT
ZOOM
ECHO
TRAIL
MODE
GUARD
ALARM
EBL
OFFSET
ENTER
NM/KM
VRM 1
MENU
EBL 1
RANGE
OFF
ECONOMY
STBY
T X
GAIN
HM OFF(PUSH)
A/C SEA
ES (PUSH)
FTC (PUSH)
A/C RAIN
Turns power on.
Press together with
[STBY/TX] key to turn power off.
Toggles between standby and
transmit.
Selects radar range.
Adjusts display brilliance.
Control: Adjusts sensitivity of
radar receiver.
Switch: Temporarily erases
heading marker.
Sets/cancels guard alarm;
silences aural alarm.
Measures range and bearing
between two targets;predicts
collision course.
Opens/closes menu.
Displays target movement in
afterglow.
TLL
VRM 2
EBL 2
Turns respective EBL on/off.
Selects presentation mode.
Turns respective VRM on/off.
Trackball
1) Shifts cursor, EBL and VRM.
2) Sets guard zone.
3) Selects items and options
from menus.
Registers selection on menus.
Switches unit of measurement
for VRM and cursor. Outputs cursor position to
navigation device.
Control:Manually suppresses rain clutter.
Switch: Automatic rain clutter
suppression.
Control:Suppresses sea clutter.
Switch: Stretches echoes in bearing
direction (ES1) and bearing
and range directions (ES2).
Touch-and-release: Shift
Long press: Zoom
Executes function programmed.
Figure 1-1 Control panel