Furuno FR-1500 Radar Detector User Manual

Back
15" MULTI-COLOR HIGH-PERFORMANCE
SHIPBORNE RADAR AND ARPA
FR-1500 MARK-3 SERIES
The paper used in this manual
is elemental chlorine free.
FURUNO Authorized Distributor/Dealer
9-52 Ashihara-cho,
Nishinomiya 662-8580, JAPAN
Telephone :
0798-65-2111
Fax
0798-65-4200
:
All rights reserved.
Printed in Japan
FIRST EDITION : OCT. 1998
V7
Pub. No. OME-34500
( TATA ) FR-1500 MARK-3 SER.
: APR. 21, 2005
*00080840411*
*00080840411*
*00080840411*
*OME34500V70*
*OME34500V70*
*OME34500V70*
SAFETY INSTRUCTIONS
DANGER
Before turning on the radar/ARPA, make sure that there is not one near the
antenna unit. Serious injury or even death may result if a rotating antenna strikes
someone standing nearby.
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.
SOFTWARE PROGRAM NO.
Model
FR-1500 MARK-3
ATA
RP-17
RP-180
Software (Prog No.)
Date
0359152109
March 00
0359152110
Dec.01
0359152111
June 04
1859041102
June 99
1859042101
June 99
0359155103
March 00
0359219-01
0359220-01
June 04
i
For your safety:
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
warning sign near the switch indicating it should not be turned on while the
antaean 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.
Severe 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
equipment 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.
Replace the monitor when the picture becomes difficult to see.
The average life of the monitor screen is about 10 years. Replace it when the
picture becomes difficult to see.
A warning label is attached to the equipment. Do not remove the label. If the
label becomes soiled or illegible, contact a Furuno agent or dealer.
No one navigation device should be solely relied on for navigation of a ship.
Always confirm position against all available aids to navigation, for safety of ship
and crew.
ii
Compliance with MED and R&TTE Directive
This radar compiles with MED 96/98/EC and its amendment 2002/75/EC of September 2, 2002
and also complies with the R&TTE Directive 1999/5/EC. In accordance with Article 6-3 of the
above-mentioned R&TTE directive, FURUNO intends to put this radar on the market of the
following countries in EU as well other markets.
Austria, Belgium, Cyprus, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Ireland,
Italy, Latvia, Lithuania, Malta, Poland, Portugal, Slovenia, Spain, Sweden, The Netherlands, United
Kingdom, Iceland, Norway
iii
TABLE OF CONTENTS
INTRODUCTION .........................................................................................................................................vi
Specifications of FR-1500 Mark-3 Series shipborne radar.......................................................................ix
1 OPERATIONAL OVERVIEW................................................................................................................1.1
1.1 Turning on the Power ...........................................................................................................................1
1.2 Transmitter ON.....................................................................................................................................1
1.3 Control Description ...............................................................................................................................2
1.4 CRT Brilliance ......................................................................................................................................3
1.5 Control Panel Backlighting....................................................................................................................3
1.6 Tuning the Receiver..............................................................................................................................3
1.7 Degaussing the Screen ........................................................................................................................4
1.8 Initializing the Compass Readout ..........................................................................................................4
1.9 Entering Own Ship’s Speed ..................................................................................................................5
1.10 On-screen Legends and Markers........................................................................................................6
1.11 Presentation Modes............................................................................................................................7
1.12 Selecting the Range Scale................................................................................................................10
1.13 Selecting the Pulselength .................................................................................................................10
1.14 Adjusting the Sensitivity....................................................................................................................11
1.15 Suppressing Sea Clutter ...................................................................................................................11
1.16 Suppressing Precipitation Clutter ......................................................................................................12
1.17 Interference Rejector ........................................................................................................................12
1.18 Measuring the Range .......................................................................................................................13
1.19 Measuring Bearing............................................................................................................................14
1.20 Collision Assessment by the Offset EBL ...........................................................................................14
1.21 Measuring Range and Bearing Between Two Targets.......................................................................16
1.22 Setting a Target Alarm Zone .............................................................................................................17
1.23 Off-centering (shift)...........................................................................................................................18
1.24 Echo Averaging ................................................................................................................................19
1.25 Electronic Plotting Aid (EPA).............................................................................................................21
1.26 Target Trails (Echo Trails).................................................................................................................24
1.27 Parallel Index Lines ..........................................................................................................................27
1.28 Reference Mark (not available with Video Plotter RP-17 or RP-180)..................................................27
1.29 Zoom (R-type only)...........................................................................................................................28
1.30 Markers ............................................................................................................................................29
1.31 Suppressing Second-trace Echoes ...................................................................................................30
1.32 [F1] Key............................................................................................................................................30
1.33 [F2] Key............................................................................................................................................31
1.34 FUNCTION Key................................................................................................................................32
1.35 Adjusting Brilliance of Screen Data ...................................................................................................34
1.36 Echo Stretch, Contrast, Enhanced Video ..........................................................................................35
1.37 Watch Timer.....................................................................................................................................36
1.38 Noise Rejector..................................................................................................................................37
1.39 Navigation Data................................................................................................................................37
1.40 Alarm Output (R-type only) ...............................................................................................................37
1.41 Outputting Target Position (R-type only) ...........................................................................................37
1.42 Degaussing Interval ..........................................................................................................................38
1.43 Background Color.............................................................................................................................38
1.44 Clutter Sweep...................................................................................................................................38
1.45 Day, Night Brilliance .........................................................................................................................39
1.46 Contrast............................................................................................................................................39
1.47 Radar Map (RP-17 or RP-180 required)............................................................................................40
1.48 Alarms..............................................................................................................................................44
1.49 Enlarging Close-in Targets (R-type only)...........................................................................................46
1.50 A/D Converter Curve Setting (R-type only)........................................................................................46
1.51 Echo Area (R-type only)....................................................................................................................47
iv
1.52 Real Time Heading Up (R-type only).................................................................................................47
2 OPERATION OF AUTOMATIC TRACKING AID (ATA) ARP-17 ..........................................................2.1
2.1 Introduction ..........................................................................................................................................1
2.2 Criteria of Tracking ...............................................................................................................................2
2.3 Activating, Deactivating the ATA...........................................................................................................4
2.4 Entering Own Ship’s Speed ................................................................................................................5
2.5 Acquiring Targets .................................................................................................................................6
2.6 Terminating Tracking of Targets ...........................................................................................................8
2.7 Vectors True or Relative .......................................................................................................................9
2.8 Displaying Target Data .........................................................................................................................9
2.9 Past Position Display..........................................................................................................................10
2.10 Set and Drift .....................................................................................................................................10
2.11 Alarms..............................................................................................................................................11
2.12 Track Test (Simulation Display) ........................................................................................................13
2.13 Outputting Target Data .....................................................................................................................13
2.14 Diagnostic Sequence........................................................................................................................14
2.15 Factors Affecting ARPA Functions ....................................................................................................15
3 RADAR OBSERVATION......................................................................................................................3.1
3.1 General ................................................................................................................................................1
3.2 False Echoes........................................................................................................................................2
3.3 SART (Search and Rescue Transponder) .............................................................................................4
3.4 RACON (Radar Beacon).......................................................................................................................6
4 OPERATION OF VIDEO PLOTTER RP-17 (OPTION)..........................................................................4.1
5 MAINTENANCE...................................................................................................................................5.1
5.1 Periodic Maintenance Schedule............................................................................................................1
5.2 Life Expectancy of Major Parts .............................................................................................................2
5.3 Replacement of Batteries......................................................................................................................2
6 TROUBLESHOOTING .........................................................................................................................6.1
6.1 Easy Troubleshooting ...........................................................................................................................1
6.2 Advanced-level Troubleshooting ...........................................................................................................2
6.3 Diagnostic Test.....................................................................................................................................6
6.4 Menu Hierarchy ....................................................................................................................................8
7 OPTIONAL EQUIPMENT .....................................................................................................................7.1
7.1 Performance Monitor (Option)...............................................................................................................1
8 DIGITAL INTERFACE (IEC 61162-1 Edition 1 and 2)) ........................................................................8.1
Description of Sentences......................................................................................................................3
9 PARTS LOCATION and PARTS LIST .................................................................................................9.1
9.1 ANTENNA UNIT, SCANNER OUTLINE and RF MODULE....................................................................1
9.2 Circuit diagrams....................................................................................................................................5
9.3 Parts list ...............................................................................................................................................8
Declaration of conformity to type
v
INTRODUCTION
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
•
Daylight-bright rasterscan 15-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 Tracking Aid (ATA) option exceeding
IMO and IEC standards
•
Reliable CPA and TCPA warning in any plotting mode, accurate target data
•
Stand-alone or integrated configuration
•
Meets the current and future IMO and IEC standards as a shipborne radar. New radar standard
MSC.64(67) Annex 4 must be met for new installation on and after January 1, 1999
FR-1500 Mark-3 Series of Radars
This Series of FURUNO radars are designed to meet various customers’ needs and the exacting
requirements of international and national standards and regulations including:
- IMO A.477(XII):
Performance Standards for Radar Equipment (up to 31.12.1998)
- IMO MSC.64(67) Annex 4:
Performance Standards for Radar Equipment (1.1.1999 and after)
- IEC 60936-1:
Shipborne Radar Operational and Performance Requirement
(1.1.1999 and after)
- IEC 60872-2:
Automatic Tracking Aids (ATA)
rd
- IEC 60945: 1996-11(3 Ed) Marine Navigational Equipment General Requirements
vi
Models
This series of radar and ARPA is available in the following models:
FR-1505 MARK-3
X-band 6 kW
FR-1510 MARK-3
FR-1525 MARK-3
X-band 12 kW
X-band 25 kW
All come with the EPA (Electronic Plotting Aid) fitted standard. An option is available to provide the
full functionality of ATA (Automatic Tracking Aid). A Video Plotter (Chart Plotter), which provides
Radar Map functions, and Performance Monitor are also optionally available.
The FR-1500 MARK-3 Series is available in the Regular type (R-type) and IMO type. The R-type
satisfies the IMO and IEC standards but includes more flexibility of functionality. These radars
comply with the carriage requirements on the relevant type of ships of the 1974 SOLAS
Convention.
The table below shows the differences between R-type and IMO-type radars. Other functions and
specifications are common. The operator cannot navigate between the two types.
Function
IMO type
Regular type (R-type)
Range scales
0.125, 0.25, 0.5, 0.75, 1.5, 3, 6, 12,
24, 48, 96 nm
0.125, 0.25, 0.5, 0.75, 1.5, 3, 6, 12,
24, 48, 72, 96 nm (sm, km on menu)
Target Alarm
zones
Radar:
Radar: Target Alarm Zone:
2 Target Alarm Zones. NO. 1 TAZ:
between 3 and 6 nm in 0.5 nm depth,
NO. 2: anywhere when NO. 1 is valid.
1st and 2nd TAZs anywhere. Alarm can
be selected for inside (as TAZ) or
outside (as off-zone Anchor Watch).
ATA: One Guard Zone:
ATA: One Guard Zone:
Default GZ covers 3.5-4 nm,
Anywhere
adjustable between 3 and 6 nm, in 0.5
nm range depth.
x2 Zoom
Not available
Available on menu
Echo colors
Monochrome yellow or green in 16
tones
Choice of monochrome in 16 tones or
3 colors depending on echo strengths
Speed mode
Manual, Log
Manual, Log, and NAV (GPS, DGPS)
Target trail
intensity
Not available
1, 2, 3, 4
Close-in range
enhancement
Not available
CENter ENHANCE on menu
A/D curve
Not available
A, B, C, D
vii
When the gyrocompass or magnetic compass is not connected to IMO type radar, the functions
mentioned below are inoperative.
In this case, the HDG SNSR on the SET UP 2 menu of the Installation menu should be set to OFF.
(See page 5-7 in the installation manual.)
1. Alert and indication for heading sensor do not appear on the screen and also the indication
of HDG does not appear on the screen.
2. The PLOT on the main menu is not accessible. Therefore, the menus of EPA and ATA are
not accessible.
3. On the menu of "FUNC1 SET", "FUNC2 SET" and "FUNC3 SET", the ECHO AVG is not
available. However, echo averaging can be turned on without gyrocompass connection by
setting ECHO AVG ON on the OTHER menu of the Installation menu.
4. On the F•2 MENU, the following are inoperative.
2. TRAIL MODE
15. PLOT MENU
16. MARK MODE
18.DRIFT MENU
26. EXT WP
30. EBL/+/PI
5. MODE on the TGT TRAIL menu is not accessible. The mode of target trail is always
relative.
6. SET & DRIFT on the OTHER menu is not accessible.
7. DEGS DEG on the DEGAUSS menu is not accessible.
8. EXT WPT on the NAV DATA menu is not accessible.
9. The MODE key is not accessible. The display mode is fixed to heading-up mode.
10.EBL/+/PI on the EBL/VRM/+ menu is not accessible.
11.HDG SET on the OTHERS menu is not accessible.
12.The cursor position (Lat./Long.) is not displayed but range and bearing from own ship to the
cursor are displayed.
13.VECTOR T/R and ECHO AVG on the F•1 menu are not accessible.
14.MODE on the MARK menu is not accessible. The mark mode is always relative.
15.RP-17 and ARP-17 are not available.
viii
Specifications of FR-1500 Mark-3 Series shipborne radar
ANTENNA RADIATORS
1. Type:
Slotted waveguide array
2. Beamwidth:
Radiator type: XN12AF XN20AF XN24AF
Length:
4 ft
6.5 ft 8 ft
Beamwidth(H): 1.8°
1.23° 0.95°
Beamwidth(V): 20°
20°
20°
Sidelobe ±10°: -28 dB (all radiators)
Polarization:
Horizontal (all radiators)
3. Rotation:
24 rpm or 42 rpm
Note: 42 rpm is not available in 12 VDC system
RF TRANSCEIVER
1. Frequency:
9410 MHz ±30 MHz (X-band)
2. Output power:
FR-1505M3:
6 kW
FR-1510M3:
12 kW
FR-1525M3:
25 kW
3. Range, Pulselength (PL) & PRF
Range scales
0.125, 0.25
0.5
0.75, 1.5
3
6, 12
24
48, 96
P/L (µs)
0.07
0.07/0.15
2 from 0.07/0.15/0.3
2 from 0.07.15/0.3/0.5/0.7
2 from 0.3/0.5/0.7/1.2
2 from 0.5/0.7/1.2
1.2
4. IF:
5. Noise figure:
6. Duplexer:
PRF (Hz)
3000
3000
3000/1500
3000/1500
1500/1000
1000/600
600
60 MHz, Logarithmic.
BW 28/3 MHz
6 dB
Ferrite circulator with diode limiter
8. Plotting facilities:
EPA:
10 targets manual plot, automatic
follow-up. Warning if not plotted
within 10 min. Disabled when ATA
board ARP-17 is accommodated.
ATA:
Automatic tracking for up to 20
targets (10 manually acquired plus
10 auto acquired, or 20 manually
acquired). Complies with IMO
MSC.64(67) Annex 4 and IEC
60872-2. Needs ARP-17 optionally.
Common feature: Sea and ground stabilized Vectors
and target trails
9. Radar map:
Nav lines, coastlines, buoys, etc.
produced by operator. 3000 pts in
Radar mode, 6000 pts on IC card in
Chart mode. Needs RP-17 Board to
meet MSC.64(67) Annex 4.
10. Target Alarm Zone: TAZ: Two Target Alarm Zones
One GZ (ATA): Default 3.5-4.0 nm,
±45° of heading line (bow)
11. Parallel Index Line: Choice of 2 or 6 lines
INTERFACE
1. IEC 61162-1:
2. Gyrocompass:
3. Speed log:
POWER SUPPLY
DC power
FR-1505 MARK-3:
DISPLAY UNIT
1. Picture tube:
15” color CRT, effective diameter:
185 mm. Yellow or green echoes in
16 levels. Rasterscan non-interlace
at 48.3 kHz hor, 60 Hz vert. R-type
has yellow or green monochrome
plus 3 color display with echo
strengths.
2. Minimum range and range discrimination:
35 m
3. Range scales:
0.125, 0.25, 0.5, 0.75, 1.5, 3, 6, 12,
24, 48, 96 nm
4. Range accuracy: 1 % of the maximum range of the
scale in use, or 30 m, whichever is the greater.
5. Bearing discrimination: Better than 2.5°
6. Bearing accuracy: ±1°
7. Presentation:
Head-up, Head-up TB, North-up,
Course-up, TM sea or ground
stabilization
RSD, TTM, etc.
Built-in interface (option) for sync
signal (20-135 V, 50-400 Hz), or
stepper signal (20-135 VDC), any
polarity
IEC 61162-1, contact closure or
200/400/500 pulses/nm
FR-1510 MARK-3:
FR-1525 MARK-3:
24 rpm: 12/24-32 VDC, 15.4/7.1-5.3
A (19.6/9.2-6.9 A)
42 rpm: 24-32 VDC, 7.5-5.6 A
(10.4-7.8 A)
24 rpm: 12/24-32 VDC, 17.5/8.3-6.3
A (22.0/10.2-7.7 A)
42 rpm: 24-32 VDC, 8.8-6.6 A
(11.5-8.6A)
24 rpm: 24-32 VDC,
9.2-6.9/11.0-8.3 A)
42 rpm: 24-32 VDC, 9.6-7.2 A
(12.3-9.2 A)
AC power (100/110/115 or 220/230 VAC, 1φ, 50-60 Hz)
FR-1505 MARK-3: : (24/42 rpm): 2.7/2.9 (3.5/3.9) A at
100 V
FR-1515 MARK-3: : (24/42 rpm):3.1/3.3 (3.9/4.4) A at
100 V
FR-1525 MARK-3: : (24/42 rpm):3.4/3.6 (4.2/4.7) A at
100 V
( ): at wind speed 100 kt
ix
ENVIRONMENTAL CONDITIONS
COATING COLOR
1. Ambient temperature (Complies with IEC 60945)
Display Unit:
Panel: N3.0 (Dark grey)
Cover: 2.5GY5/1.5 (Light grey)
Antenna Unit:
N9.5 (White)
Display unit:
-15 to +55°C
Antenna unit: -25 to +70°C (Storage)
2. Relative humidity: 93% at 40°C
EQUIPMENT LIST
Standard
.1 Display unit RDP-119 (AC or DC)
.2 Scanner unit RSB-0074 (24 rpm), -0075 (42 rpm) with
RF transceiver unit RTR-067 (6 kW), -062 (12 kW),
-063 (25 kW)
.3 Antenna radiator
XN-12AF (4 ft), -20AF (6.5 ft), -24AF (8 ft)
.4 Antenna cable 15/20/25/30m (Specify)
Option
.1 Power cable CVV-S8x2C 15 m (for DC set)
.2 Stepdown transformer RU-1803 (440 V, 1ø)
.3 Rectifier RU-1746B-2 (115/230 V to 24 VDC)
.4 Rectifier RU-3424 (115/230 V to 24 VDC for 25 kW, 42
rpm)
.5 42 rpm scanner motor
.6 ARPA board ARP-17
.7 Video plotter board RP-17 or RP-180 (Mandatory on
IMO-type)
.8 ROM card (for digital charts), RAM card (for custom
data) for RP-17 expanded radar map
.9 Sub display FMD-8001 (R-type)
Electromagnetic radiofrequency radiation
MODEL
2
2
RADIATOR TYPE Distance to 100 W/cm Distance to 10 W/cm
FR-1505 M3 (X, 6 kW)
XN12AF (4’)
XN20AF (6.5’)
FR-1510 M3 (X, 12 kW) XN12AF (4’)
XN20AF (6.5’)
FR-1525 M3 (X, 25 kW) XN20AF (6.5’)
RF power density on
antenna aperture
75 W/cm2
none
2.1 m
1.1 m worst case
10.0 m worst case
200 W/cm2 worst case
1.1 m worst case
10.0 m worst case
200 W/cm2 worst case
Category of Equipment Units
Equipment for Protected Area
Display unit
Power supply unit
Interswitch unit
Equipment for Exposed Area
Antenna unit (Scanner unit, RF Transceiver unit)
Performance monitor
Compass safe distance
Equipment unit
Display unit RDP-119
Antenna unit RTR-067 (6 kW)
Antenna unit RTR-062 (12 kW)
Antenna unit RTR-063 (25 kW)
Standard compass
0.80 (0.50) m
1.40 (0.85) m
1.70 (1.05) m
2.10 (1.30) m
Steering compass
0.50 (0.30) m
0.70 (0.45) m
0.90 (0.55) m
1.20 (0.75) m
Remarks
For all radiators
For all radiators
For all radiators
RF Transceiver unit
Performance monitor PM-30 (X-band) 0.4 m
0.3 m
Measurements by the BSH, Germany, Cert Nr. 287/2. Figures in ( ) apply to the coastal boats
under German Regulations.
x
CONFIGURATION OF FR-1500 MARK-3 SERIES RADARS
VIDEO PLOTTER
RP-17 or RP-180
xi
This page is intentionally left blank.
xii
1
OPERATIONAL OVERVIEW
1.1 Turning on the Power
The [POWER] switch is located at the left corner of the display unit. Push it to switch on the radar
set. To turn off the radar, push it again. The screen shows the bearing scale and digital timer
approximately 15 seconds after power-on. The timer counts down three minutes of warm-up time.
During this period the magnetron, that is, the transmitter tube, is warmed for transmission. When
the timer has reached 0:00, the indication STBY appears, indicating that the radar is now ready to
transmit pulses.
Switch S2
Notice for technicians
The display unit designed to run on AC voltage
has a switch (S2) at its rear to cut off 115/230 V
supply from internal circuits. Thus, the radar will
not operate when this switch is turned off. Keep it
in the ON position.
POWER
switch
1.2
Transmitter ON
After the power is turned on and the magnetron has warmed up, STBY appears at the screen
center, indicating the radar is ready to transmit radar pulses. Press the [STBY/TX] key to transmit.
When you won’t be using the radar for an extended period, but you want to keep it in a state of
readiness, place it in standby by pressing the [STBY/TX] key. The display shows STBY.
Video Freeze-up Recovery
Video freeze-up or lock-up can occur unexpectedly on any digital rasterscan radars. This is
mainly caused by heavy spike noise in the power line and can be noticed by carefully watching
the nearly visible sweep line. If you suspect that the picture is not updated every scan of the
antenna or no key entry is accepted notwithstanding the apparently normal pictures, do Quick
Start to restore normal operation.
.1 Turn off the Power Switch and within 10 seconds turn it on again.
.2 Press the Transmit switch labeled STBY/TX for transmit condition.
-1.1-
1.3
Control Description
MENU ACCESS CONTROL
PANEL
Function keys are also used as
numeral keypads for 0-9.
1
MODE
Press to select presentation mode - Head-up
(RM), Head-up True Bearing (RM), Course-up
(RM), North-up (RM), North-up (TM). Ref.
2
TGT
TRAIL
Target trails over selected time. Ref. 1.26.
3
TGT
Sets two target alarm zones. Ref. 1.22.
ALARM
4
SHIFT
ZOOM
Off-centers the radar picture, turns on/off
Zoom (R-type) or manual-resets the TM
display. Ref. 1.23.
5
INDEX
LINE
Controls Parallel Index Lines. Ref. 1.27.
EBL
6 OFFSET
7
POWER
switch
PLOT
SYMBOL Enters EPA mark. Ref. 1.25.
Inscribes reference marks (Ref. 1.28) or
marks in Radar map (Ref. 1.47).
8
MARK
9
F1
Selects functions of primary controls. Ref. 1.32.
0
F2
Selects setting of one of parameters visible on
STBY. Ref. 1.33.
MENU
Primary menu containing: Video Plot, Target
Trail, Target Alarm, Watch Time, Echo
Function, Plot, Mark, Brill, Others. Ref. 1.6, etc.
CANCEL
CLEAR Cancels entry, stops tracking.
DIRECT
ACCESS
ENTER
CONTROL
SELECT
TX
STBY
Offset 1st EBL together with Cursor. Ref. 1.20.
OFF
ON
BRILL
A/C RAIN
Concludes entry of data, displays target data.
GAIN
A/C SEA
OFF
ON
VRM
EBL
DAY/NIGHT (PUSH) TLL (PUSH) A/C AUTO (PUSH) HL OFF (PUSH)
DEGAUSS (PUSH)
DIMMER BKGND
COLOR
AUDIO
OFF
RINGS
FUNCT
ION
-
RANGE
+
Select FUNC 1, 2 or 3 which is a
setting of picture effecting parameters.
Ref. 1.34.
TLL: Target Latitude/Longitude outputted in IEC 61162-1 format.
-1.2-
1.4
CRT Brilliance
Operate the BRILL control on the control panel of the display unit to adjust the entire screen
brightness. Note that the optimum point of adjustment varies with ambient lighting conditions,
especially between daytime and nighttime.
1.5
Control Panel Backlighting
Operate the [DIMMER] key to adjust control panel backlighting.
1.6
1.6.1
Tuning the Receiver
Automatic tuning
The radar is set for automatic tuning at the factory. The radar receiver is tuned automatically each
time the power is turned on. The tuning indicator and the label AUTO at the top right corner of the
display unit show the tuning circuit is working. The receiver may become detuned, in automatic
tuning, if own ship’s radar receives the radar signal of another shipborne radar. To return, press
the [STBY/TX] key twice.
1.6.2
Manual tuning
Press the GAIN control (Push for HL OFF) and adjust the VRM control after setting as below:
1. Press the [MENU] key.
MENU
1. VIDEO PLOT*/ AIS
2. TGT TRAIL
3. TGT ALARM
4. WATCH TIME
5. ECHO SIG
6. FUNC
7. PLOT
8. MARK
9. BRILL
0. OTHERS
1.
2.
3.
4.
5.
6.
7.
8.
9.
0.
OTHERS
HDG SET
SPD MODE
MAN LOG
LOG (S-BT)
LOG (S-WT)
MAN SPD
SET & DRIFT
DISPLAY
MARK/LINE
TUNE
NAV DATA
EBL/+/PI
↓
* Requires RP-17 or RP-180. AIS not shown on RP-17.
(a) Main menu
(b) OTHERS menu
2.
3.
4.
5.
TUNE
1. ↑
2. MODE
AUTO
MAN
(c) TUNE menu
Press the [0] key twice to display the OTHERS menu. (b)
Press the [7] key to display the TUNE menu. (c)
Press the [2] key to select the option MAN from the MODE field.
Press the [ENTER/SELECT] key. While observing the picture on the 48-mile scale, slowly
adjust the VRM rotary control while holding down the GAIN control to find the best tuning
point. Make sure that the radar has been set to the best tuning point. This condition is
where the tuning indicator lights to about 80% of its total length. Note that the tuning
indication will never extend to full length.
6. Press the [MENU] key to close the menu.
-1.3-
1.7
Degaussing the Screen
Each time the radar is turned on, the degaussing circuit automatically demagnetizes the CRT
screen to eliminate color contamination caused by earth’s magnetism or magnetized ship structure.
The screen is also degaussed automatically at certain time intervals, which may be selected on the
menu. While being degaussed, the screen may be disturbed momentarily with vertical lines. If you
wish to degauss by manual operation, push the EBL rotary control.
1.8 Initializing the Compass Readout
With a compass interfaced with the radar, ship’s heading is displayed at the top of the screen.
Upon turning on the radar, match the on-screen HDG readout with the compass reading by the
procedure shown below. Once you have set the initial heading correctly, resetting is not usually
required. However, if the HDG readout goes wrong for some reason, repeat the procedure to
correct it.
1. Press the [MENU] key to display the main menu.
2. Press the [0] key twice to display the OTHERS menu.
1.
2.
3.
4.
5.
6.
7.
8.
9.
0.
OTHERS
HDG SET
SPD MODE
MAN LOG
LOG (S-BT)
LOG (S-WT)
MAN SPD
SET & DRIFT
DISPLAY
MARK/LINE
TUNE
NAV DATA
EBL/+/PI
NAV is additionally available in
R-type. If accuracy is doubtful,
do not use the speed data
obtained from GPS or DGPS.
↓
3. Press the [1] key to select HDG SET.
4. Operate the VRM rotary control to duplicate the compass readout on the radar menu display.
5. Press the [ENTER/SELECT] key.
6. Press the [MENU] key to close the menu.
-1.4-
1.9 Entering Own Ship’s Speed
EPA requires an own ship speed input and compass signal. The speed can be entered from a
speed log (automatic) or through the plotting keypad (manual).
1.9.1
Automatic speed input
1. Press the [MENU] key and the [0] key twice to show the OTHERS menu.
1.
2.
3.
4.
5.
6.
7.
8.
9.
0.
OTHERS
HDG SET
SPD MODE
MAN
LOG
LOG (S-BT)
LOG (S-WT)
MAN SPD
SET & DRIFT
DISPLAY
MARK/LINE
TUNE
NAV DATA
EBL/+/PI
↓
NAV is additionally available
in R-type. If accuracy is
doubtful, do not use the speed
data obtained from GPS or
DGPS.
2. Press the [2] key to select the menu item SPD MODE.
3. Press the [2] key again to select the LOG option.
4. Press the [ENTER/SELECT] key to confirm your selection followed by the [MENU] key to close
the menu. The ship’s speed readout at the right-hand side of the screen shows own ship’s
speed fed from the speed log with the label LOG, BT or WT.
Notes:
1) IMO Resolution A.823(19) for ARPA recommends that a speed log to be interfaced with an
ARPA should be capable of providing through-the-water speed. The same concept applies to
the ATA and the EPA.
2) Be sure not to select LOG when a speed log is not connected. If the log signal is not provided,
the ship’s speed readout at the screen top will be blank.
1.9.2
Manual speed input
If the radar is not interfaced with a speed log, or the speed log does not feed correct speed enter
the ship’s speed as follows:
1. Press the [MENU] key and the [0] key twice to show the OTHERS menu.
2. Press the [2] key several times to select MAN from the SPD MODE field.
3. Press the [3] key to select the MAN SPD.
4. Enter speed with the numeric keys.
5. Press the [ENTER/SELECT] key to confirm your selection followed by the [MENU] key to close
the menu. The ship’s speed readout at the right-hand side of the screen shows own ship’s
speed fed from the speed log with the label MAN.
-1.5-
1.10
On-screen Legends and Markers
Range scale
Range ring interval
Pulselength
HU/HU TB/CU/NU/TM
Target Alarm Zone (Radar) or Guard Zone (ATA),
1st zone between 3 and 6 nm, 2nd zone anywhere.
Heading line
Heading marker
Parallel index lines
Parallel index line reference
Geodetic datum
AUTO
2nd Echo
SART
12
2NM
340
350
000
010
330
PULSE 1 M1
H U RM
320
FUNC1
COAST 310
300
+
290
280
1
270
260
250
240
IR1
ES1
NR
230
EAV0.5
A/C AUTO
220
CONTRAST1
210
EBL
287.2°R
240.0°R
200
190
PI
50°R
180
Stern marker
170
MAIN
MAP ALIGN
SET DRIFT
REL TRAIL
HDG 155.0° T GYRO
SPD 12.0KT WT
LOG 00.00KT F
030
00.00KT SB
12:34 30SEC
305.6° R
+
040
9.02NM
X-BAND
38 29 .562°N
050 W84
138 18.562°E
TTG
45:50
060
OWN SHIP (GPS)
38 32 .222°N
138 11.212°E
070
CSE
150.0 T
77.0°T
WPT01
080
0.123NM
2
TTG 00:00
DEPTH 075.2m
090
TEMP 18.0°C
30-SEPT-1998
(LOCAL) 00:00
100
MAN 00:01
1 TRUE VECT
3Min
WT
110
RNG 4.7NM
BRG 78.5°T
120
CSE 264.0°T WT
SPD 10.3K
WT
CPA 2.9NM
130
TCPA 15:20
EPFS SIGNAL MISSING
140
TRIG. AZIMUTH
TA1 TA2
VIDEO GYRO LOG
150
IN
IN
GAIN
160
VRM
A/C SEA
WATCH TIM
10.75NM
A/C RAIN
00:00
BRILL
7.00 NM
020
North marker
Cursor position
from OS, Time-To-Go
Own ship data
L/L, CMG
(Course Made Good
by GPS/DGPS)
Depth and Temperature
if sensors are used
ATA data
Warning of signal loss
Trigger/Azimuth/
Video/Gyro/Log
Control settings
Parallel index line reference 50°R
EBL. NO. 1 and NO. 2
Active EBL is circumferenced
Own ship data
Heading, Speed value
and sensor type
VRM. NO. 1 and NO. 2
Active VRM is circumferenced
-1.6-
1.11
Presentation Modes
This radar has the following presentation modes: Head-up, Head-up/TB, Course-up, North-up, and
True Motion.
1.11.1
Selecting presentation mode
Press the [MODE] key on the panel at the right side of the display unit. Each time the [MODE] key
is pressed, the presentation mode and mode indication at the upper-left corner of the screen
change cyclically.
Note: When a failure occurs in the gyrocompass, the radar will automatically be switched to
unstabilized presentation mode. All compass related data will read Relative values.
Loss of Gyrocompass signal
When the compass signal is lost, the presentation mode automatically becomes head-up and the
HDG (heading) readout at the top of the text area reads xxx.x°. Also GYRO SIGNAL MISSING
appears in red at the lower right corner on the screen. Press the MODE key, and the x’s go off.
Then, match the on-screen HDG readout with the heading value.
-1.7-
Presentation mode, representative display
North marker
340
350
Heading Marker
Heading Line
000
010
020
330
030
320
040
310
050
300
Description
Head-up mode
A display without azimuth stabilization in which the
line connecting the center with the top of the display
indicates own ship’s heading.
060
290
070
280
080
+
270
090
260
The target pips are painted at their measured
distances and in their directions relative to own ship’s
heading.
100
250
A shoreline on the bearing scale is the north marker
indicating compass north. A failure of the compass
input will cause the north marker to disappear and the
readout to show xxx.x° and the message GYRO
SIGNAL MISSING appears in red at the lower-right
corner of the screen.
110
240
120
230
130
220
140
210
150
200
North marker
340
190
350
180
170
160
Heading Marker
Heading Line
000
010
020
330
030
320
040
310
050
300
060
290
070
280
080
+
270
090
260
100
250
110
240
120
230
130
220
140
210
150
200
190
180
170
160
Bearing scale rotates with a compass signal
Heading Marker
330
340
350
320
000
North marker
010
310
020
300
030
290
040
280
050
270
060
260
070
+
250
080
240
090
230
220
100
210
110
200
120
190
Course-up mode
An azimuth stabilized display 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 distances
and in their directions relative to the intended course
which is maintained at the 0-degree position while the
heading line moves in accordance with ship’s yawing
and course change. This mode is useful to avoid
smearing of picture during course change. After a
course change, press the [SHIFT] key to reset the
picture orientation if you wish to continue using the
course-up mode. The heading line gets back to scale
zero.
Head-up TB (True Bearing) mode
Radar echoes are shown in the same way as in the
head-up mode. The difference from normal head-up
presentation lies in the orientation of the bearing
scale. The bearing scale is compass stabilized. That
is, it rotates in accordance with the compass signal,
enabling you to know own ship’s heading at a glance.
This mode is available only when the radar is
interfaced with a gyrocompass.
If the compass fails, the bearing scale returns to the
state of head-up mode.
130
180
170
160
150
140
-1.8-
Presentation mode, representative display
North
340
350
Description
North-up mode In the north-up mode, target pips
are painted at their measured distances and in their
true (compass) directions from own ship, north
bearing maintained up of the screen. The heading line
changes its direction according to the ship’s
heading. If the gyrocompass fails, the presentation
mode changes to head-up and the north marker
disappears. Also, the HDG readout shows xxx.x°. And
the message GYRO SIG MISSING appears in red at
the lower-right corner of the screen.
Heading Line
000
010
020
330
030
320
Heading
Marker
040
310
050
300
060
290
070
280
080
+
270
090
260
100
250
110
240
120
230
130
220
140
210
150
200
190
170
180
North
340
000
350
160
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. In the sea
stabilized TM without set and drift inputs, the
landmass can move on the screen.
Heading Line
010
Heading
Marker
020
330
030
320
040
310
050
300
060
290
070
280
080
+
270
090
260
When own ship reaches a point corresponding to
75% of the radius of the display, it is automatically
reset to a point of 75% radius opposite to the
extension of the heading marker passing through the
display center. Resetting can be made at any moment
before the ship reaches the limit by pressing the
[SHIFT]. Automatic resetting is preceded by a beep
sound.
100
250
110
240
120
230
130
220
140
210
150
200
190
180
160
170
If the compass fails, the mode is changed to the
head-up and the north marker disappears. The HDG
readout shows xxx.x° and the message GYRO SIG
MISSING appears in red at the lower-right corner of
the screen.
330
340
350
000
010
020
030
320
330
040
310
050
300
290
280
090
+
260
100
250
110
240
120
130
140
210
(a)
200
190
180
170
160
True motion Is selected
150
010
020
030
Target trail
040
050
280
080
090
+
260
100
250
110
240
120
230
130
220
140
210
200
190
180
170
160
150
(b) Own ship has reached a
point 75% of display radius
-1.9-
340
350
000
010
020
030
040
050
300
070
270
330
320
310
060
290
080
220
000
300
070
230
350
310
060
270
340
320
060
290
070
280
080
270
090
+
260
100
250
110
240
120
230
130
220
140
210
200
190
180
170
160
150
(c) Own ship is automatically reset
to 75% of radius
1.12 Selecting the Range Scale
The display range scale is changed by pressing the [+] and [-] keys. The selected range scale and
range ring interval 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. The range
scales are 0.125-0.25-0.5-0.75-1.5-3-6-12-24-48-96 nm.
Press the [RANGE] key to select range. The range, range ring interval and pulselength appear at
the top left corner of the display.
1.13
Selecting the Pulselength
The pulselength in use is displayed at the upper-left position. Appropriate pulselengths are preset
to individual range scales and function keys. Therefore, you are not usually required to select them.
If you are not satisfied with the current pulselength settings, however, it is possible to change them
by the ECHO SIG menu as below. The pulselength is selectable on the ranges 0.5 to 24 nm.
1.13.1
1.
2.
3.
4.
5.
Selecting pulselength 1 or 2
Press the [MENU] key to display the Main menu.
Press the [5] key twice to select ECHO SIG.
Press the [6] key or [7] key to select PULSE 1 or PULSE 2 as appropriate.
Press the [ENTER/SELECT] key.
Press the [MENU] key.
The indication of PULSE 1 or PULSE 2 alternately appears at the upper left corner of the display.
PULSE 1
1. ↑
2. 0. 5NM
S1 S2
3. 0.75-1.5NM S1 S2 M1
4. 3NM
S1 S2 M1 M2 M3
5. 6-12NM
M1 M2 M3 L 6.
24NM
M2 M3 L
1.13.2
Underlined is the default value on each range.
0.07
0.15 µs
0.07
0.15
0.3 µs
0.07
0.15 0.3
0.5
0.3
0.5 0.7 1.2 µs
0.5 µs 0.7 1.2 µs
0.7 µs
Presetting pulselengths 1 and 2
Pulselength 1 and 2 can be preset on the PULSE 1 and PULSE 2 in the ECHO SIG menu. A
longer pulse provides an increased detection range, but with reduced discrimination. If you need
discrimination in preference to detection, choose a shorter pulse. However short the radar satisfies
the detecting requirements of the IMO.
1.
2.
3.
4.
5.
6.
Press the [MENU] key.
Press the [5] key twice to display the ECHO SIG menu.
Press the [6] or [7] key as appropriate to select PULSE 1 or PULSE 2.
Press appropriate numeric key among 2-7 to select pulselength and range.
Press the [ENTER/SELECT] key.
Press the [MENU] key.
-1.10-
1.14
Adjusting the Sensitivity
The GAIN control adjusts the sensitivity of the receiver. It works in precisely the same manner as
the volume control of a broadcast receiver, amplifying the signals received.
The proper setting is such that the background noise is just visible on the screen. If you set up for
too little sensitivity, weak echoes may be missed. On the other hand excessive sensitivity yields
too much background noise; strong targets may be missed because of the poor contrast between
desired echoes and the background noise on the display.
To adjust receiver sensitivity, transmit on long range, and adjust the GAIN control so background
noise is just visible on the screen.
1.15 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 scanner above the water, the further the clutter will
extend. When sea clutter masks the picture, suppress it by the A/C SEA control, rotate for manual
adjustment, push for automatic adjustment.
1.15.1
Manual adjustment by the A/C SEA control
The A/C SEA control reduces the amplification of echoes at short ranges (where clutter is the
greatest) and progressively increases amplification as the range increases, so amplification will be
normal at those ranges where there is no sea clutter.
The proper setting of the A/C SEA control should be such that the clutter is broken up into small
dots, and small targets become distinguishable.
If the control is set too low, targets will be hidden in the clutter, while if it is set 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.
1. Confirm that the sensitivity is properly
adjusted, and then transmit on short range.
2. Adjust the A/C SEA control so small targets
are distinguishable but some clutter remains
on the display.
A/C SEA OFF
1.15.2
A/C SEA adjusted
Automatic adjustment by the A/C AUTO control
The A/C AUTO control automatically suppresses sea clutter as well as rain clutter. Push the A/C
SEA control to turn on the automatic A/C circuit. A/C AUTO appears at the bottom left corner when
the A/C circuit is on.
CAUTION
The auto A/C function can erase weak target echoes. Adjust the control carefully
watching the display.
-1.11-
1.16
Suppressing Precipitation Clutter
The vertical beamwidth of the scanner 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. Figure
at right shows the appearance of rain clutter
on the display.
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).
Clockwise rotation of this control increases the
anti-clutter effect.
A/C RAIN OFF
A/C RAIN ON – Thin clouds
can be cleared
1.17 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 irregular 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 interference.
The interference rejector is a kind of signal correlation circuit. It
compares the received signals over successive transmissions and
suppresses randomly occurring signals. There are three levels of
interference rejection depending on the number of transmissions that
are correlated. These are indicated by the legends IR1, IR2 and IR3 at
the upper-left position of the screen.
To activate the interference rejector;
1. Press the [F1] key. The following display appears.
1.
2.
3.
4.
5.
6.
7.
8.
9.
0.
VECTOR
PULSE
INT REJ
STRETCH
ECHO AVG
CONTRAST
N REJ
DISP SEL
PM
SART
T/R
2. Press the [3] key to select interference rejection level (OFF, 1, 2, or 3) from the INT REJ field.
Selected level is shown as IR1, IR2 or IR3 at the bottom left-hand corner on the display.
-1.12-
1.18 Measuring the Range
Use the fixed range rings to obtain a rough estimate of the range to a target. They are the
concentric solid circles about own ship, or the sweep origin. The number of rings is automatically
determined by the selected range scale and their interval is displayed at the upper-left position of
the screen.
1.18.1
Measuring range by the variable range marker (VRM)
Use the Variable Range Markers (VRMs) for more accurate measurement of the range to a target.
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 ON] key to display either of the VRMs. Successive presses of the [VRM ON]
key toggles the active VRM between No.1 and No.2 and the currently active VRM readout is
circumscribed.
2. Rotate the VRM rotary control clockwise or counterclockwise to align the active VRM with the
inner edge of the target of interest and read its distance (unit: nm) at the lower-right corner of
the screen. Each VRM remains at the same geographical distance when you operate the
[RANGE+] or [RANGE-] key. This means that the apparent radius of the VRM ring changes in
proportion to the selected range scale.
3. Press the [VRM OFF] key to erase each VRM.
-1.13-
1.19 Measuring Bearing
Use the Electronic Bearing Lines (EBLs) to find bearing of a target. There are two EBLs, No.1 and
No.2, which are toggled by successive presses of the [EBL ON] key. 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. Press the [EBL ON] key to display either of the EBLs. Successive presses of the [EBL ON]
key toggles the active EBL between No.1, No.2 and index lines (if displayed) and the
currently active EBL readout is circumscribed.
2. Rotate the EBL rotary control clockwise or counterclockwise until the active EBL bisects the
target of interest, and read its bearing at the lower-left corner of the screen.
3. Press the [EBL OFF] key to erase each EBL.
The EBL readout is affixed by R (relative) if it is relative to own ship’s heading, or T (true) if it is
referenced to the North, as determined by the item EBL/VRM/+ on the OTHERS menu.
Note 1: Bearing reference cannot be selected for IMO type (no menu selection). For the IMO
type, relative bearing is selected in the HU mode, and true bearing in HUTB, CU, NU and TM
modes.
Note 2: The cursor may be returned to OS position by pressing the VRM control (R-type only).
1.20
Collision Assessment by the Offset EBL
The origin of the EBL can be placed anywhere with the trackball to enable measurement of range
and bearing between any targets. This function is also useful for assessment of the potential risk of
collision.
To assess possibility of collision:
1. Press the [EBL ON] key to display or activate the No.1 EBL.
2. Place the cursor (+) on a target appearing as threatening (A in the illustrated example) by
operating the trackball.
3. Press the [EBL OFFSET] key, and the origin of the active EBL shifts to the cursor position.
Press the [EBL OFFSET] key again to anchor the EBL origin.
4. After waiting for a few minutes (at least 3 minutes), operate the EBL rotary control until the
EBL bisects the target at the new position (A'). The EBL readout shows the target ship’s
course, which may be true or relative depending on the settings on the OTHERS menu.
-1.14-
If relative motion is selected, it is also possible to read CPA (Closest Point of Approach) by
using a VRM as shown below (Figure (a)). If the EBL passes through the sweep origin
(own ship) as illustrated (Figure (b)), the target ship is on a collision course.
5. To return the EBL origin to the own ship position, press the [EBL OFFSET] key again.
CURSOR
330
340
350 000
010
VRM 1
020
320
330
040
310
060
290
A'
270
260
250
240
EBL
150.3°R
080
280
090
270
100
260
190
180
170
060
070
A'
080
100
110
240
120
230
EBL 1
140
160
050
250
120
200
030
090
130
210
VRM 1
020
040
290
110
220
010
A
300
070
230
350 000
320
A
280
340
310
050
300
EBL 1
CURSOR
030
150
VRM
3.85 NM
(a) Evaluating the target ship course in RM
-1.15-
EBL
100.3°R
130
220
140
210
200
190
180
170
160
150
VRM
3.85 NM
(b) Target ship on collision course
1.21 Measuring Range and Bearing Between Two Targets
1. Press the [EBL OFFSET] key, and place the origin of the No.1 EBL on a target of interest
(target 1 in the illustrated example) by operating the trackball. Note: Only No. 1 EBL can be
offset.
2. Turn the EBL rotary control until the EBL passes through another target of interest (target
2).
3. Turn the VRM rotary control until the range marker on the No. 1 EBL aligns with target 2.
The NO. 1 VRM readout at the lower-right corner of the screen indicates the distance
between the two targets.
4. To return the EBL origin to the own ship position, press the [EBL OFFSET] key again.
Bearing is shown relative to own ship with suffix “R” or as a true bearing with suffix “T” depending
on EBL relative/true settings on the OTHERS menu.
Target 2
NO. 1 VRM
330
340 350
000 010
020
030
320
Target 1
040
310
050
300
Origin of NO. 1 EBL
060
290
070
280
080
270
090
260
100
250
110
240
120
230
130
220
140
210
EBL
90.5°R
335.2°R
200
190
160
180 170
150
VRM
0.505NM
0.205NM
R: Bearing relative os heading viewed from Target 1 to 2
T: Bearing relative to north viewed from Target 1 to 2
-1.16-
Distance between
Targets 1 and 2
1.22 Setting a Target Alarm Zone
CAUTION
The target alarm feature should never be relied upon as the sole means for detecting the risk of
potential collision. The operator of a ship is not relieved of the responsibility to keep lookout for
avoiding collisions, whether or not the radar is in use.
1.22.1
Introduction
There are two independent Target Alarm Zones. NO. 1 zone has a default coverage of 3.5-4 nm
and is adjustable within 3.0 to 6.0 nm. NO. 2 zone may be adjusted anywhere when the NO. 1 TAZ
is valid. On the R-type, the outer and inner boundaries can be set at any distance. In any radar
type, the sector of the zones can be set anywhere between 0 and 360 degrees in any direction.
When the radar is equipped with Automatic Tracking Aid (ATA) or ARPA, a Guard Zone alarm is
also available.
To set target alarm zones:
1. Press the [MENU] key and press the [3] key twice to show the TGT ALARM menu.
TGT ALARM
In R-type, you can use NO. 1 as TAZ by selecting IN
AREA NO.
NO 1 NO 2
and NO. 2 as an Anchor Watch by selecting OUT. In
MODE 1
IN
OUT
IMO type, only IN is available.
MODE 2
IN
OUT
Press the [1] key to select guard zone to use NO 1 or NO 2.
Press the [ENTER/SELECT] key.
Press the [MENU] key.
Place the cursor (+) at point “A” (see figure below) using the trackball. Press the [TGT
ALARM ] key. SET TA1(2) appears at the lower-right corner on the screen. When both
alarms are prepared the active alarm is circumscribed.
6. Move the cursor (+) to point “B” and press the [TGT ALARM] key again. Then, an echo
watch zone as illustrated is created and the label TA1 (or 2) appears instead of SET TA1
(or 2) at the lower-right corner of the screen.
1.
2.
3.
2.
3.
4.
5.
330
340
350 000
010
TAZ
020
Target alarm zone (TAZ) can be set in any sector
between 3 and 6 nm on IMO-type, and anywhere on
the R-type.
030
320
040
310
050
A
300
060
290
070
B
280
080
270
090
260
100
250
110
240
When the radar has the ATA board ARP-17, a total of
3 alarm zones (two TAZs and one GZ) may be set.
The 2nd TAZ is available only when the 1st TAZ is
valid.
120
230
130
220
140
210
200
190
180
170
160
150
-1.17-
Note: To create a target alarm zone having a 360-degree coverage around own ship, set
point B in almost the same direction (approx. ±3°) as point A and press the [TGT ALARM] key.
Two alarm zones can be set as described above. To change the active alarm zones, do steps 1
through 4 in the above procedure. (When both alarms are prepared the active alarm indication is
circumscribed.)
1.22.2
Acknowledging alarm
A target entering the ALARM zone produces both visual (flashing) and audible (beeping) alarms.
To silence the audible alarm, press the [AUDIO OFF] key shortly. ACK replaces IN (or OUT).
This will deactivate the audible alarm but will not stop the flashing of the target in the target alarm
zone. To reactivate the audible alarm, press the [AUDIO OFF] key again.
To silence the audible alarm, you may press the [AUDIO OFF] key. However, in this case, the label
ACKN does not appear.
Hold the [AUDIO OFF] key depressed for at least 5 seconds to disable the target alarm.
Note: The target alarm is given to targets having a certain level of echo strength. This level does
not always imply a landmass, reef, ships or other surface objects but can mean returns from the
sea surface or precipitation. Properly adjust the GAIN, A/C SEA, and A/C RAIN controls to reduce
noise to avoid generation of the guard alarm against false targets.
On the R-type, an inward or outward target alarm can be selected on the TGT ALARM menu. On
the IMO type, only the inward guard alarm is available. The inward guard alarm generates visual
and audible warnings when a target enters the target alarm zone from any direction. The outward
target alarm is produced when a target leaves the target alarm zone. (This is not a target alarm by
definition but an anchor watch, which some users find valuable.)
Inward alarm (IMO-type and R-type)
The radar causes an alarm when a
target violates the TAZ.
Outward alarm (R-type radar only)
The radar causes an alarm when a target
leaves the TAZ (Anchor watch).
1.23 Off-centering (shift)
Own ship position, or sweep origin, can be displaced to expand the view field without switching to a
larger range scale. The sweep origin can be off-centered to a point specified by the cursor, up to
75% of the range in use in any direction.
This feature is not available on the longest range scale or in the true motion mode. The number of
range rings increases keeping the original range intervals unchanged. To off center the radar
picture:
1. Place the cursor at a position where you wish to move the sweep origin by operating the
trackball.
2. Press the [SHIFT/ZOOM] key with a touch-and-release action. Then, the sweep origin is
off-centered to the cursor position. However, the heading line is left in the same position.
3. To cancel off-centering, press the [SHIFT/ZOOM] key again.
-1.18-
+
+
CURSOR
CURSOR
(a) Select location with cursor
(b) Press SHIFT key to offcenter
Note: The display is automatically reset to 75% of the range in use whenever the cursor is placed
at an edge of the effective display area. Note also that the heading marker (small circle on the
bearing scale) leaves the heading line on off-centered display, always indicating the correct
direction of the own ship heading.
1.24
Echo Averaging
The echo average feature effectively suppresses sea clutter. Echoes received from stable targets
such as ships appear on the screen at almost the same position every rotation of the scanner. On
the other hand, unstable echoes such as sea clutter appear at random positions.
To distinguish real target echoes from sea clutter, echo average performs scan-to-scan correlation.
Correlation is made by storing and averaging echo signals 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 the reduced brilliance, making it easier to discriminate real targets
from sea clutter.
To properly use the echo average function, it is recommended to first suppress sea clutter with the
A/C SEA control and then do the following:
1. Press the [F1] key.
2. Press the [5] key twice to select ECHO AVG.
1.
2.
3.
4.
5.
6.
7.
8.
9.
0.
VECTOR
PULSE
INT REJ
STRETCH
ECHO AVG
CONTRAST
N REJ
DISP SEL
PM
SART
ECHO AVG
T/R
3. Press the [5] key to select echo averaging level desired from the ECHO AVG field.
OFF:
0.5:
1:
2:
3:
No averaging effect
Distinguishes small targets from sea clutter.
Helps distinguish targets from sea clutter and suppresses brilliance of unstable echoes.
Distinguishes small stationary targets such as navigation buoys.
Stably displays distant targets.
-1.19-
(a) Echo average OFF
(b) Echo average ON
Echo averaging uses scan-to-scan signal correlation technique based on the true motion over the
ground of each target. Thus, small stationary targets such as buoys will be shown while
suppressing random echoes such as sea clutter. True echo average is not however effective for
picking up small targets running at high speeds over the ground.
Echo average is inoperable when a compass signal is not available. If you wish to use this feature
without a compass signal, consult a FURUNO representative.
Do not use the Echo Average function under heavy pitching and rolling; loss of
target detection can result.
-1.20-
1.25
Electronic Plotting Aid (EPA)
10 targets can be plotted electronically to assess their motion trend. Five past positions can be
displayed for each target. Working range of EPA is 0-48 nm irrespective of range scale. Note that
EPA is disabled when the ATA (ARP-17) is accommodated.
330
340
350 000
010
020
030
320
040
310
1
050
300
TAZ
290
060
3
1
280
070
080
2
270
090
260
100
250
110
240
120
230
130
220
140
210
200
190 180 170
160
MAN 00:01
3 TRUE VECT
3Min WT
RNG 4.7NM
BRG 41.5°T
CSE 198.0°T WT
SPD 10.3K WT
CPA 0.9NM
TCPA 15:20
150
Target data is shown in the data display area including range, bearing, course, speed, CPA and
TCPA of the last-plotted or selected target.
EPA SYMBOLS
○ Target plotted
□ Plotted target and the data being read
Flashing: Targets in Target Alarm Zone
△ Target on a collision course
Target 2 is on a collision course as the extension of its
vector goes through the own ship position. Placing the
offset EBL will help for assessment. TCPA is counted
up to 99.59 min and beyond that it is indicated as
TCPA > 99.99 min.
Note: Plots will be lost when the compass or speed log fails.
1.25.1
+ (a) First plot position
Plotting a target
1. Place a cursor on a target of interest and press the
[PLOT SYMBOL] key. The target position changes
with a calculated speed and course every 1-2 seconds
by the auto follow-up feature, maintaining the
calculation origin at point (a). If option (7) TRACK is
ON, tracked positions are indicated by dots.
+
(b) Latest calculated
position
(c) 2nd plot position
(c') Re-entry for correction
2. In more than 30 seconds but within 10 minutes, place the cursor on the latest calculated
position (b) and press the [ENTER/SELECT] key. The plot symbol changes from ○ to □. This
step is to identify the target on which you want the plotting data.
3. Place the cursor on the target within 5 seconds, maybe at a different location due to leeway at
(c), and press [PLOT SYMBOL] key. The vector will be drawn based on a trip between (a) and
(c). The target data is indicated in the text area to the right. Correction of plot position (c’), if
necessary, is possible within 5 seconds, to show the course made good and speed made good
(a-c’).
4. Do the same for other targets (maximum 10). For targets already in auto follow-up, do steps 2
and 3.
-1.21-
Note: If a target once plotted is not plotted again within 10 minutes, the warning “UPDATE PLOT”
and plot number will appear on the lower right margin of the screen and the plot symbol of the
target flashes. Plotting of a target will be ceased if the time between consecutive plots exceeds 10
minutes. If you want to continue plotting this target, reacquire it within 5 minutes. Otherwise, the
target will be regarded as a “lost target” and its plot symbol and target data will be erased. The
larger the plotting interval, the less accurate the plotted target data. Plotting of each target should
normally be made every 3 or 6 minutes as far as possible. You can use the Watch Alarm to warn
yourself every 3 or 6 minutes.
1.25.2
Cancelling
Place the cursor on the plot symbol and press the [CANCEL/CLEAR] key.
1.25.3
Vectors
Vectors can be displayed relative to own ship’s heading (Relative) or with reference to the North
(True). This feature is available in all presentation modes (compass must be working correctly).
The current vector mode is indicated at the right of the screen.
Vector time (or the length of vectors) can be set to 30 seconds, 1, 3, 6, 15 or 30 minutes and the
selected vector time is indicated at the upper-right corner of the screen.
PLOT MENU 1
1. Press the [MENU] key followed by the [7] key twice to select PLOT.
1. MARK DISP
2. Press the [3] key select REL or TRUE from the VECT REF field as
OFF
ON
appropriate and press the [ENTER/SELECT] key.
2. ERASE
3. Press the [4] to select appropriate vector time from the VECT TIME
field.
3. VECT REF
4. Press the [ENTER/SELECT] key to conclude your selection.
REL TRUE
5. Press the [MENU] key to close the menu.
The vector tip shows an estimated position of the target after the selected 4. VECT TIME
(min)
vector time elapses. It can be valuable to extend the vector length to
30sec 1 3 6
evaluate the risk of collision with any target.
15 30
The radar calculates motion trends (range, bearing, course, speed, CPA 5. CPA SET
and TCPA) of all plotted targets.
OFF 0.5NM 1NM
1.5NM 2NM 3NM
In the head-up and head-up true bearing modes, target bearing, course
4NM 5NM 6NM
and speed shown in the upper-right target data field become true (T)
relative to north or relative (R) relative to own ship in accordance with 6. TCPA SET
(min)
true/relative vector setting. In the North-Up, Course-Up, and True Motion
30sec 1 2 3 4
modes, the target data field always displays true bearing, true course and
5 6 12 15
speed over the ground.
1.25.4
Reading the target data
7.
TRACK
OFF ON
8.
AUDIO ALARM
OFF ON
9.
PLOT No. DISP
OFF ON
Place cursor on the target and press the [ENTER/SELECT] key. The selected target is marked
with
. The following target data is displayed at the right side of the CRT.
RNG/BRG (Range/Bearing): Range and bearing from own ship to last-plotted target with suffix T
(True).
CSE/SPD (Course/Speed): Course and speed are displayed for the last-plotted target with suffix T
(True).
CPA/TCPA: CPA (Closest Point of Approach) is the closest range the target will approach to own
ship. TCPA is the time to CPA. Both CPA and TCPA are automatically calculated. TCPA is
counted up to 99.59 min and beyond that it is indicated as TCPA > *99.59 MIN.
-1.22-
1.25.5
Terminating target plotting
With EPA you can plot up to 10 targets. You may wish to terminate plotting of less important
targets to newly plot other threatening targets.
With Trackball: Place the cursor (+) on a target which you do not want to be tracked any longer by
operating the trackball and press the [CANCEL/CLEAR] key.
All Targets: To terminate plotting of all targets at once:
1. Press the [MENU] key followed by the [7] key.
2. Press the [2] key twice to select OFF from the ERASE field.
3. Press the [ENTER/SELECT] key followed by the [MENU] key.
1.25.6
Setting CPA/TCPA alarm ranges
When the predicted CPA of any target becomes smaller than a preset CPA alarm range and its
predicted TCPA less than a preset TCPA alarm limit, the EPA releases an audible alarm and
displays the warning indication COLLISION on the screen. In addition, the EPA symbol changes to
a triangle and flashes together with its vector.
Provided that this feature is used correctly, it will help prevent the risk of collision by alerting you to
threatening targets. It is important that GAIN, A/C SEA, A/C RAIN and other radar controls are
properly adjusted.
CPA/TCPA alarm ranges must be set up properly taking into consideration the size, tonnage,
speed, turning performance and other characteristics of own ship.
CAUTION
CPA/TCPA
The CPA/TCPA alarm feature should never be relied upon as the sole means for detecting 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.
To set the CPA/TCPA alarm ranges:
1. Press the [MENU] key.
2. Press the [7] key twice to display the PLOT 1 menu.
3. Press the [5] key for CPA SET or [6] key for TCPA set.
4. Press the [5] key or [6] key again to select CPA or TCPA range desired.
5. Press the [ENTER/SELECT] key to register your selection.
6. Press the [MENU] key to close the menu.
1.25.7 Silencing CPA/TCPA audible alarm
Press the [AUDIO OFF] key to acknowledge and silence the CPA/TCPA audible alarm.
The warning label COLLISION and the flashing of the triangle plot symbol and vector remain on
the screen until the dangerous situation is gone or you intentionally terminate tracking of the target
by using the trackball.
-1.23-
1.25.8
Past plot points
Past plot points may be marked on the display by dots. Up to nine dots can be displayed as
follows:
1. Press the [MENU] key.
2. Press the [7] key twice to reach the PLOT MENU 1.
3. Press the [7] key to select OFF or ON from the TRACK field as appropriate.
4. Press the [ENTER/SELECT] key to register your selection followed by the [MENU] key to
close the menu.
1.25.9
Displaying plot No.
Plot numbers can be turned on/off as follows.
1. Press the [MENU] key followed by [7] key twice to show PLOT MENU 1.
2. Press the [9] key to select PLOT No. DISP ON or OFF as appropriate.
3. Press the [ENTER/SELECT] key to register your selection followed by the [MENU] key to
close the menu.
1.26 Target Trails (Echo Trails)
It is possible to display the trails of the radar echoes of targets in the form of synthetic afterglow.
Target trails are selected either relative or true and may be sea or ground stabilized. The simulated
afterglow can be selected in a single tone or gradual shading depending on a setting on the TGT
TRAIL menu.
1.26.1 True or relative trails
Target trails may be displayed relative to north or own ship’s heading on Relative Motion, and only
relative to north on True Motion. True motion trails require a compass signal and own ship speed
input.
(a) True target trails – no smearing of
stationary targets
(b) Relative target trails – all targets
moving relative to own ship
Note: When true trail is selected on the RM mode, the legend TRUE TRAIL appears in red.
To select true or relative target trail presentation:
1. Press the [MENU] key.
2. Press the [2] key twice to show the TGT TRAIL menu.
-1.24-
TGT TRAIL
15sec 30sec 1 3 6
15 30 CONT
MODE
REL TRUE
SHADE
MONO
MULTI
LEVEL
1 2 3
TRAIL COPY OFF ON
THIN TRAIL
OFF ON
THIN MODE
1 2 3 4
1. TIME (min)
2.
3.
4.
5.
6.
7.
(7. R-type only)
3. Press the [2] key several times to select REL or TRUE from the MODE field as appropriate.
4. Press the [ENTER/SELECT] key to confirm your selection, then the [MENU] key to close
the menu.
1.26.2
Trail gradation
Target trails may be shown in monotone or multitone. Gradual shading paints the trails getting
thinner with time just like the afterglow on an analog PPI radar.
Monotone
1.
2.
3.
4.
Multitone
Press the [MENU] key.
Press the [2] key twice to select TGT TRAIL.
Press the [3] key to select MONO or MULTI from the SHADE field as appropriate.
Press the [ENTER/SELECT] key and the [MENU] key in order.
1.26.3
Displaying and erasing target trails
Press the [TGT TRAIL] key to activate or deactivate the target trails feature. The current target trail
setting is displayed at the upper right-and corner of the screen.
Note: Holding the [TGT TRAIL] key depressed for about 3 seconds will cause a loss of target
trail data so far stored in memory.
1.26.4
Thin trails
Target trails may be painted in thinner trails. This is useful when there are a lot targets and
their trails would create congestion on the screen.
1.
2.
3.
4.
Press the [MENU] key.
Press the [2] key twice to select TGT TRAIL.
Press the [6] key to select ON or OFF from the THIN TRAIL field as appropriate.
For the R-type radar, you may select the degree of thinness from the THIN MODE field.
The higher the number the thinner the trail. Press the [7] key to select degree of thinness
desired.
5. Press the [ENTER/SELECT] key and the [MENU] key in order.
-1.25-
1.26.5
Restoring trails
Trails are cancelled and restarted whenever the range is changed. However, you can continue
trails on the same range, without restarting, when the range is changed to a next larger or smaller
range scale. Note however that when the range is changed, only those target trails within the
previous range are continued; no trails are generated for targets outside of the previous range.
No trail generated for targets
not within previous range
1. Press the [MENU] key.
2. Press the [2] key twice to select
TGT TRAIL.
3. Press the [5] key to select ON from
the TRAIL COPY field.
4. Press the [ENTER/SELECT] key
and [MENU] key in order.
1.26.6
Resetting target trails
(a) Previous range
(b) New range
To reset (or clear) the target trail memory, hold the [TGT TRAIL] key depressed for about 3
seconds. Target trails are cleared and the trailing process restarts from time count zero at current
target trail plot interval.
1.26.7
Trail brilliance
The brilliance of target trails can be adjusted on the BRILL menu as follows:
1. Press the [MENU] key.
2. Press the [9] key twice to display the BRILL menu.
BRILL
1. TGT TRAIL
2. CHARACTER
3. HDG LINE
4. EBL/VRM
5. CURSOR
6. MARK
Menu item No. 9 requires RP-17 board.
7. PLOT
8. OS SYMB
9. ↓
3. Press the [1] key to select TGT TRAIL.
4. Operate the VRM rotary control to adjust brilliance. Current brilliance is shown by the bar
graph.
5. Press the [ENTER/SELECT] key to conclude your selection followed by the [MENU] key to
close the menu.
-1.26-
1.27
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. The orientation of the index lines is controlled with the EBL rotary
control and the intervals between the lines is adjustable with the VRM rotary control (provided that
No.2 VRM is active).
1.27.1 Displaying/erasing the index lines
Press the [INDEX LINE] key to disconnect the VRM. Press the
[INDEX LINE] key to display/erase the index lines.
1.27.2
Selecting number of index lines to display
Maximum number of the index lines can be set for 2 or 6 on the
MARK/LINE sub menu in the OTHERS menu.
Bearing of PI Lines
1.28
Reference Mark (not available with Video Plotter RP-17 or RP-180)
You can mark any reference points, prominent target or a point of particular interest using the
reference mark feature. This mark is geographically fixed, namely, ground stabilized. Twenty such
reference marks can be entered. Note this feature is inoperative when the RP-17 or RP-180 is
installed.
To use the reference mark:
1. Place the cursor (+) at a point where you want to place a reference mark by operating the
trackball.
2. Press the [MARK] key. The reference mark appears at the cursor position. The cursor
location is indicated on the screen.
1.28.1
Inscribing mark reference
The reference mark can be set relative to own ship, or referenced to land (sea or ground
stabilized).
1. Press the [MENU] key.
2. Press the [8] key twice to select MARK.
MARK
1.
2.
ERASE
MODE
REL TRUE
3. Press the [2] to select the REL or TRUE as required.
4. Press the [ENTER/SELECT] key, then [MENU].
1.28.2
Erasing reference marks
Erasing individual reference marks
Select the Reference mark with the cursor and then press the [CANCEL/CLEAR] key.
-1.27-
1.28.3
1.
2.
3.
4.
Erasing all reference marks
Press the [MENU] key.
Press the [8] key twice to select MARK.
Press the [1] key twice.
Press the [MENU] key.
1.29
Zoom (R-type only)
The zoom function is available on the R-type radar only, and it enlarges an area of interest as large
as twice the normal viewing.
1. Place the cursor (+) close to the point of interest by operating the trackball.
2. Press and hold down the [SHIFT/ZOOM] key for about two seconds. The area around the
cursor and own ship is enlarged twice as large as the original size.
3. To cancel zoom, press and hold down the [SHIFT/ZOOM] key about two seconds.
Note: The zoom feature is inoperative when the display is off centered.
+
Cursor
Place the cursor at a
position of interest
ZOOM in
(Regular type only)
-1.28-
1.30 Markers
Heading line, north marker, stern marker, own ship symbol
The heading line indicates the ship’s heading in all presentation modes. It 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 the
north-up and true motion modes. The heading marker appears as a small circle on the bearing
scale to indicate the heading when the display is shifted or is in the north-up or TM mode.
Temporarily erasing heading line, north marker, stern marker, own ship symbol
To temporarily extinguish the heading line to look at targets existing dead ahead of own ship, press
the GAIN control. The heading line reappears when the control is released.
Note that the Video Plotter screen (requires RP-17) is also temporarily erased when the GAIN
control is pressed.
North marker
The north marker appears as a short dashed line. In the head-up mode, the north marker moves
around the bearing scale in accordance with the compass signal.
Stern marker
The stern marker (a dot-and-dash line) appears opposite to the heading line. It can be
displayed/erased on the MARK/LINE sub menu in the OTHERS menu ([MENU], [0], [0]).
Own ship symbol
The own ship symbol ( ) can be displayed/erased on the MARK/LINE sub menu in the OTHERS
menu. The symbol is scaled to indicate the length and beam of the vessel. If the largest dimension
of the symbol gets smaller than 6 mm, the symbol will disappear and own ship will be represented
with a small dot or circle depending on the range in use. NOTE: Details should be entered during
installation.
-1.29-
1.31 Suppressing Second-trace Echoes
In certain situations, echoes from very distant targets may appear as false echoes (second-trace
echoes) on the screen. This occurs when the return echo is received one transmission cycle later,
that is, after a next radar pulse has been transmitted.
To activate or deactivate the second-trace echo rejector:
1. Press the [MENU] key followed by the [5] key twice to display the ECHO SIG menu.
1.
2.
3.
4.
5.
6.
7.
8.
9.
0.
ECHO SIG
COLOR
YEL GRN
*
CLTR SWEEP
OFF ON (LINK)
SWEEP LEVEL
1 2 3
ENHANCE
OFF ON
ND
2 ECHO
OFF ON
PULSE 1
PULSE 2
A/D CURVE
ABCD
CNTR ENHANCE OFF ON
REALTIME HU
OFF ON
* COLOR additional to R-type
ON(FIX)
(8. R-type only)
(9. R-type only)
(0. R-type only)
2. Press the [5] key to select OFF or ON.
3. Press the [ENTER/SELECT] key to conclude your selection followed by the [MENU] key to
close the menu.
1.32 [F1] Key
The [F1] key allows instant access to the primary function controls.
1. Press the [F1] key. The following menu appears.
1.
2.
3.
4.
5.
6.
7.
8.
9.
0.
VECTOR
PULSE
INT REJ
STRETCH
ECHO AVG
CONTRAST
N REJ
DISP SEL
PM
SART
T/R
Vector mode: True or Relative. Press [F1], [1].
Pulselength selection
Interference rejector; Ref. 1.17.
Echo stretch; Ref. 1.36.
Echo average; Ref. 1.24.
Contrast of video; Ref. 1.36.
Noise rejector; Ref. 1.38.
[ENTER/SELECT] toggles display between Main and Sub.
Activates Performance Monitor. Refer to Chapter 7.
Optimum setting for detecting SART; Refer to 3.3.
2. Press appropriate numeric key. For example, press the [4] key to select desired echo
stretch level. Each press of the [4] key selects echo stretch level.
-1.30-
1.33
[F2] Key
The [F2] key selects the level or setting for one of the parameters as selected at step 3 below on
the STBY screen.
1.33.1
Presetting the [F2] key
1. In the STANDBY condition, press the [MENU] key.
2. Press the [6] key twice to display the FUNC menu.
1.
2.
3.
4.
5.
6.
7.
3.
FUNC
FUNC 1
FUNC 2
FUNC 3
FUNC 1 SET
FUNC 2 SET
FUNC 3 SET
F⋅2 SET
OFF ON
OFF ON
OFF ON
F2 SET option not valid in TX mode; valid on STBY only.
Press the [7] key twice to select F•2 SET. The following display appears:
[F2 MENU]
Select by VRM knob
and press ENTER key.
1. TRAIL TIME
21. SART
2. TRAIL MODE
22. WATCH TIME
3. TRAIL SHADE
23. STERN MARK
4. TRAIL LEVEL
24. OS MARK
5. ALARM AREA
25. TUNE A/M
6. ALARM MODE
26. EXT WPT
7. TGT COLOR
27. OS POSN
8. ECHO AVG
28. CLTR SWEEP
9. INT REJ
29. P.MONITOR
10. ECHO STRETCH
30. EBL/+/PI
11. NOISE REJ
31. VRM/+ RNG*1
32. AIS(1) MENU*2
12. ECHO ENHANCE
33. AIS DATA*2
13. 2ND ECHO
14. CONTRAST
15. PLOT MENU
16. MARK MODE
17. BRILL MENU
18. DRIFT MENU
19. NAV DATA
20. DISPLAY
*1: R-type only
*2: on IMO-type radar,
31 is AIS(1) MENU and
32 is AIS DATA. These
are not shown on RP-17.
(This screen appears only in the STBY condition.)
4. Select function desired with the VRM rotary control.
5. Press the [ENTER/SELECT] key to register your selection, and then press the [MENU] key
to finish.
Then, a single press of [F2] turns on the function preprogrammed in the procedure above.
-1.31-
1.34
FUNCTION Key
The FUNCTION key works similar to the automatic dialing feature on a telephone, playing back
control settings just as they were registered. Instead of manually adjusting controls to set up for a
particular condition, for example, navigation in a harbor, you can have the [FUNCTION] key to do it
for you.
1.34.1
Presetting the FUNCTION key
The radar’s internal computer offers several navigation condition setups as outlined in the table
below. For instance, you might want to preset the level of parameters as HBR (Harbor) in FUNC
which you can later select among FUNC 1, 2 or 3 by pressing the [FUNCTION] key.
Each setup option defines a combination of several radar settings for achieving optimum setup for
a particular navigating situation. Those involved are echo average, interference rejector, echo
stretch, noise rejector, enhanced video, video contrast, automatic anti-clutter.
Adjusting these features on a function key menu changes the original function key settings. To
restore the original settings for a particular function key, it is necessary to display the relevant
function key menu and select appropriate menu options.
1. Press the [MENU] key (Ref. 1.33/1 – 2).
2. Press the [6] key twice to display the FUNC menu.
3. Press [4], [5] or [6] twice to select which function number to preset. For example, press the
[4] key to select FUNC 1.
1.
2.
3.
4.
5.
6.
7.
8.
9.
0.
FUNC 1
↑
FUNC SEL CST OCEAN
R-SEA FLT BY
HBR L RAIN
ECHO AVG OFF 0.5 1 2 3
INT REJ
OFF 1 2 3
STRETCH
OFF 1 2
N REJ
OFF ON
ENHANCE OFF ON
CONTRAST 1 2 3
A/C AUTO
OFF ON
PULSE
1.
2.
3.
4.
5.
6.
7.
8.
9.
0.
FUNC 2
↑
FUNC SEL CST OCEAN
R-SEA FLT BY
HBR L RAIN
ECHO AVG OFF 0.5 1 2 3
INT REJ
OFF 1 2 3
STRETCH
OFF 1 2
N REJ
OFF ON
ENHANCE OFF ON
CONTRAST 1 2 3
A/C AUTO
OFF ON
PULSE
3.
4.
5.
6.
7.
8.
9.
FUNC 3
↑
FUNC SEL CST OCEAN
R-SEA FLT BY
HBR L RAIN
ECHO AVG OFF 0.5 1 2 3
INT REJ
OFF 1 2 3
STRETCH
OFF 1 2
N REJ
OFF ON
ENHANCE OFF ON
CONTRAST 1 2 3
A/C AUTO
OFF ON
0.
PULSE
1.
2.
Above does not mean the optimum setting, but just for explanation.
4. Press the [2] key several times to select function desired.
5. Press the [ENTER/SELECT] key. The settings of items 3-9 automatically change according
to selection made at step 4.
6. Press the [MENU] key.
-1.32-
1.34.2
Activating/deactivating a function
Press the [FUNCTION] key. Each time the key is pressed a preset function the preset functions
enabled on the FUNC menu are turned on or off cyclically.
You may enable/disable preset functions from the menu as follows:
1. Press the [MENU] key followed by the [6] key twice to display the FUNC menu.
2. Press the [1], [2] or [3] key to enable or disable a preset function as appropriate.
3. Press the [ENTER/SELECT] key to register your selection and the [MENU] key to close the
menu.
The picture setup options assignable to any of the function keys are shown in the table below:
LABEL
BUOY
DESCRIPTION
Optimum setting for detecting
navigation buoys, small vessels
and other small surface objects
Transoceanic voyage using a
range scale of 12 nm or larger
LABEL
RAIN
DESCRIPTION
Setting for radar operation in
rainy condition
LONG
COAST
For coastal navigation using a
range of 12 nm or less
HARBOR
ROUGH
SEA
Optimum setting for rough
weather or heavy rain
FLOAT
Optimum setting for long range
detection using a range scale of
6 nm or larger
Optimum setting for short range
navigation in a harbor area
using a range scale of 1.5 nm or
less
Optimum setting for detecting
the floating buoys of seine net
OCEAN
Function keys default settings are as below:
LABEL
3 ECHO
AVG
Echo
Average
4 INT REJ
5 ECHO
STRETCH
Interference
rejector
Echo Stretch
6 NOISE
REJ
7
8
9 A/C AUTO
ENHANCE
CONTRAST
A/C Auto
Noise
Rejector
Enhance
Video
Video
Contrast
COAST
0.5
1
OFF
OFF
OFF
2
OFF
OCEAN
0.5
1
OFF
OFF
OFF
2
OFF
R-SEA
1
1
OFF
OFF
OFF
2
OFF
FLT
1
1
OFF
OFF
OFF
2
ON
BY
3
1
2
ON
OFF
3
OFF
HBR
0.5
1
OFF
OFF
OFF
2
OFF
L
3
1
1
ON
OFF
3
OFF
RAIN
0.5
1
OFF
OFF
OFF
2
OFF
-1.33-
1.35
Adjusting Brilliance of Screen Data
You can adjust relative brilliance levels of various
marks and alphanumeric readouts displayed on the
screen as follows:
BRILL
1. TGT TRAIL
1. Press the [MENU] key.
2. CHARACTER
2. Press the [9] key twice to show the BRILL
menu.
3. HDG LINE
3. Select a desired menu item by pressing the
corresponding numeric key. As an example,
press the [1] key if you want to change the
brilliance of target trails.
4. EBL/VRM
5. CURSOR
6. MARK
7. PLOT
8. OS SYMB
9. ↓
Menu item No. 9 requires RP-17 board
4. Operate the VRM rotary control to adjust brilliance. Current brilliance level is displayed by
the bar-graph beneath each menu item.
5. Press the [ENTER /SELECT] key conclude your selection followed by the [MENU] key to
close the menu.
-1.34-
1.36
Echo Stretch, Contrast, Enhanced Video
On long ranges target echoes tend to shrink in the bearing direction, making them difficult to see.
On short and medium ranges such as 1.5, 3 and 6 nm scales, the same size targets get smaller on
screen as they approach the own ship. These are due to the inherent property of the radiation
pattern of the antenna. To enhance target video, use the echo stretch function. There are two
types: echo stretch 1 (ES1) to enlarge in bearing direction for long range detection, and echo
stretch 2 (ES2) to enlarge in range direction on 1.5-6 nm scales.
1.36.1
Echo stretch
1. Press the [F1] key.
2
Press the [4] key twice to display the ECHO SIG menu.
3. Press the [4] key to select echo stretch function desired. A selected
level appears at the lower left-hand position. Each selection works
as in the figure below.
ES OFF
ES1 – Enlarged in bearing
direction
Use on range 1.5-12 nm
1.
2.
3.
4.
5.
6.
7.
8.
9.
0.
VECTOR
PULSE
INT REJ
STRETCH
ECHO AVG
CONTRAST
N REJ
DISP SEL
PM
SART
T/R
ES2 – Enlarged in range
direction. Invalid at P/L S1
and S2
Use on range 1.5-6 nm
Notes:
1) If the 1.5 nm range is preset for pulselength of S1 or S2, and the 3 nm scale for S2, the
echo stretch is not available on those range scales.
2) 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 these types of interference
have been sufficiently suppressed before activating this function.
1.36.2
Contrast
Contrast is adjustable in 3 levels according to the radar video sampling level. Press [F1], [6] and
select the level so that the picture shows up most clearly from the background.
-1.35-
1.36.3
Enhanced video
The enhanced video function works similar to the echo stretch function, enlarging target echoes in
bearing and range direction on 1.5-6 nm scales.
1.
2.
3.
4.
5.
6.
7.
8.
9.
0.
ECHO SIG
COLOR
YEL GRN
*
CLTR SWEEP
OFF ON (LINK)
SWEEP LEVEL
1 2 3
ENHANCE
OFF ON
2ND ECHO
OFF ON
PULSE 1
PULSE 2
A/D CURVE
ABCD
CNTR ENHANCE OFF ON
REALTIME HU
OFF ON
* Color available on R-type.
ON(FIX)
8., 9., 0. R-type only.
1. Press the [MENU] key followed by the [5] key
twice to show the ECHO SIG menu.
Echo enlarged in bearing
and range directions
2. Press the [4] key to select OFF or ON from the
ENHANCE field as appropriate.
3. Press the [ENTER/SELECT] key, and then press
the [MENU] key.
1.37 Watch Timer
The watch timer works like an alarm clock, sounding visual WATCH and audible alarms at a
predetermined interval.
To silence the alarm, press the [AUDIO OFF] key. The label WATCH turns to normal color and the
alarm timer is reset to the initial and starts the count-down sequence again.
To activate the timer:
1. Press the [MENU] key followed by the [4] key twice to select WATCH TIME.
WATCH TIME
1. ALM INTVL
OFF 3min 6min
15min 20min
12min
2. Press the [1] key to select desired interval (3, 6, 12, 15, 20 min) from the ALM INTVL field.
3. Press the [ENTER/SELECT] key to conclude your selection followed by the [MENU] key to
close the menu.
-1.36-
1.38
Noise Rejector
The noise rejector suppresses white noise, which appears on the screen as many dots scattered
randomly over the display.
To suppress white noise:
1. Press the [F1] key.
2. Press the [7] key to turn the noise rejector on or off as appropriate. NR appears at lower
left-hand position when the noise rejector is on.
1.39 Navigation Data
Various navigation data can be displayed (and their format selected) with connection of appropriate
external sensors. You can select which navigation data to display as follows:
1. Press the [MENU] key, and then the [0] key twice to show the OTHERS menu.
8. Press the [8] key twice to select display the NAV DATA menu.
9. Press appropriate numeric key to turn data on/off, select format. You may select navigator
(GPS, Loran C), position display format (L/L, TD, none), unit of depth measurement
(meters, feet, fathoms), unit of water temperature measurement (°C, °F), display local time,
and turn external waypoint on/off. Note that TDs are input from a Loran C navigator and
are for display only.
4. Press the [ENTER/SELECT] key, and then press the [MENU] key.
1.40
Alarm Output (R-type only)
Alarm signal can be output on the R-type radars.. Select the alarm(s) to output as follows.
Requires connection of external buzzer (OP03-21) to J212 on the SPD Board.
OUTPUT ALM
1. Press the [MENU] key.
2. Press the [0] key twice.
3. Press the [0] key twice again to select the sub
menu OTHER.
1. ↑
2. TIMER
3. TGT ALM
4. ATA/EPA
5. PLOTTER
OFF
OFF
OFF
OFF
ON
ON
ON
ON
4. Press the [4] key twice to select OUTPUT ALM.
5. Press appropriate numeric key to select the alarm you want to output.
6. Press the [ENTER/SELECT] key followed by the [MENU] key.
1.41 Outputting Target Position (R-type only)
Target position can be output (in IEC 61162-1 format) to a video plotter and marked on its screen
with a symbol. Select target with the trackball and push the A/C RAIN control. Target position is
output to the video plotter connected to the NAV connector on the SPU Board inside the radar
display unit. This function requires position data and compass signal.
-1.37-
1.42
Degaussing Interval
The screen is degaussed automatically at certain time intervals, as well as each time the radar is
turned on, to eliminate color contamination caused by earth’s magnetism or magnetized ship
structure. You can select the degaussing interval and the degaussing degree as follows:
1. Press the [MENU] key followed by the [0] key four times to select OTHERS.
10. Press the [3] key to display the DEGAUSS menu.
11. Press the [2] key to select desired degaussing interval (OFF, 30 seconds, 1, 2 minutes) in
the DEGS INTVL field.
12. Press the [3] key to select desired degaussing degree (45°, 90°, 135°) in the DEGS DEG
field. For example, selecting 45° will automatically degauss the screen when the ship
makes a turn which is between 45° and 89°.
DEGAUSS
5. Press the [ENTER/SELECT] key followed by
1.
↑
the [MENU] key.
2.
3.
1.43
OFF 30 sec 1 2 min
OFF 45° 90° 135°
DEGS INTVL
DEGS DEG
Background Color
The [BKGND COLOR] key selects the color of the background, characters, menu, markers and
indications as below. Each press of the key selects one of five color combinations.
Marks
Setting
1
2
3
4
5
BLK (black)
L-BLU (light
blue)
L-BLU (light
blue)
L-BLU (light
blue)
BLK (black)
Outside radar display BLK (black)
area
BLK (black)
BLK (black)
L-BLK
BLK (black)
Characters
GRN (green)
GRN (green)
GRN (green)
WHT (white)
RED
Menu
YEL (yellow)
YEL (yellow)
YEL (yellow)
YEL (yellow)
YEL (yellow)
Menu highlight
YEL
YEL
YEL
YEL
RED
EBL/VRM
BLU (blue)
GRN (green)
GRN (green)
GRN (green)
L-BLU (blue)
Range rings
GRN (green)
WHT (white)
WHT (white)
WHT (white)
GRN (green)
Cursor
WHT (white)
GRN (green)
GRN (green)
GRN (green)
WHT (white)
Heading line
GRN (green)
WHT (white)
WHT (white)
WHT (white)
GRN (green)
Target alarm zone
WHT (white)
L-BLU (blue)
L-BLU (blue)
L-BLU (blue)
WHT (white)
North mark
GRN (white)
WHT (blue)
WHT (blue)
WHT (blue)
GRN (white)
Stern marker
GRN (white)
WHT (blue)
WHT (blue)
WHT (blue)
GRN (white)
Radar display area
1.44 Clutter Sweep
The clutter sweep feature suppresses sea and rain clutters within the trackball-selected area, to
discriminate specific targets from noise. The user may select the area to process and the level of
suppression to apply as follows:
1. Press the [MENU] key.
2. Press the [5] key twice to select the ECHO SIG menu.
-1.38-
3. Press the [2] key to turn on/off the clutter sweep function:
OFF:
Turns off clutter wiper feature.
ON(LINK): Sweep area moves with trackball operation. Sweep cursor shown by dashed
lines.
ON(FIX): Sweep area is fixed on the screen. Sweep cursor shown by solid lines.
4. Press the [3] key (SWEEP LVL) several times to select level of suppression to use; “3”
provides the highest level of noise suppression.
5. Press the [ENTER/SELECT] key to register your selection and the [MENU] key to finish.
6. Operate the trackball to select area to process.
Select area to reduce
clutter.
The clutter sweep feature may also be activated by the [F2] key.
1.45 Day, Night Brilliance
Press the BRILL control for day or night use; the whole screen is brightened or dimmed. This
function has no effect on panel illumination.
1.46 Contrast
The contrast of video is adjustable in three levels according to the radar video sampling level.
Select the level so that the radar picture shows up most clearly from the background.
1. Press [F1].
2. Press the [6] key to select desired contrast level from the CONTRAST field. Selected level is
indicated as CONTRAST1, CONTRAST2 or CONTRAST3 at the lower-left corner on the
screen.
3. Press the [MENU] key to finish.
-1.39-
1.47
Radar Map (RP-17 or RP-180 required)
A radar map is a combination of map lines and symbols whereby the user can define and input the
navigation data, route planning and monitoring data. Map lines (also called nav lines) are
navigational facility whereby the observer can define lines to indicate channels or traffic separation
schemes. These lines can be ground stabilized to stop them from drifting. (Definition in IEC
60936-1 and IEC 60872-1)
In this series of radar, the standard radar map has the capacity of 3,000 points of mark and line.
The map data can be memorized to facilitate the repeated use on the routine navigation area.
The user can create a radar map on-real time while using the radar for navigation or at leisure time
at anchor or while the radar is not being used. Place of a map can be made for any waterways
apart from the actual own ship location. The map data is stored in the memory. When the optional
RP-17 card is installed in the display unit, much more data can be created and copied to another
card.
1.47.1
Preparation
Selecting navaid
1. Press the [MENU] key.
2. Press the [0] key twice.
3. Press the [8] key twice again to display the NAV DATA menu.
4. Press [2] key to select navigation data input device.
5. Press the [ENTER/SELECT] key to register your selection and the [MENU] key to close the
menu.
Notes:
1) Own ship position display requires an input from radionavigational equipment such as a
GPS receiver in accordance with the data format as defined by IEC 61162-1.
2) Wind, ocean current, depth, water temperature are displayed when the relevant sensors
are fitted and the data from these may be used to influence other data such as set/drift.
Displaying external waypoint
Waypoint defined on another navaid can be displayed by setting EXT WP to ON on the NAV DATA
menu. This can be done by the keying sequence of MENU, [0], [0], [8], [8], [3].
Note: When the waypoint is more than 5000 nm away from own ship, the data shows > 5000
nm.
-1.40-
1.47.2
Making a radar map
Mark entry
1.Mark Selection
Marks can be entered in three different ways.
1. Press the [MENU] key and the [8] key twice to display
the MARK menu.
2. Press the [4] key to select the entry mode: Cursor, L/L
or OS Position. For L/L, key in position with the numeral
keys. Use + or – to specify N/E or S/W. Marks can be
entered at OS position only when menu is displayed.
3. Press the [ENTER/SELECT] key.
4. Press the [1] key and key in mark to enter with the ten
keys.
5. Press the [ENTER/SELECT] key.
6. Press the [MARK] key to enter mark.
7. Repeat step 6 to continue entering the same mark with
the same entry method. To enter a different mark or
change mark entry method, repeat above procedure.
The map is automatically stored in the radar’s memory.
Example: How to draw a coastline by cursor
1. Press the [MENU] key and the [8] key twice to display
the MARK menu.
2. Press [1] [1] [7] (for coastline mark) and press the
[ENTER/SELECT] key.
3. Press the [4] key to select Cursor and press the
[ENTER/SELECT] key.
4. Press the [MENU] key.
5. Place the cursor mark on a required position and press
the [MARK] key.
6. Place the cursor at a next position and press the
[MARK] key. One line appears connecting designated
two points.
7. Repeat step 6 to establish the coastline.
-1.41-
01
02
03
04
05
06
07
08
09
10
11
12
13
14
15
16 Nav Line
17 Coastline
18 Depth Contour
19 Prohibited Area
20 Cable
21 Erase
2.Display
On
Off
3.Erase
No
Erase Display
Erase All
4.Entry method
Cursor
L/L
OS Position
00°00.000'N
000°00.000'E
5.Posiiton Correction
Mark in use
0/3000
1.47.3
Position and bearing correction
There may be some instances where the map latitude and longitude are out of radar pictures for
several seconds. You can compensate this error as follows:
1. Press the [MENU] key.
2. Press the [8] key twice to display the MARK menu.
3. Press the [5] key to display the Position Correction menu.
Position Correction
1. ↑
2. Position Corr.
No
Yes
3. Delta L/L Entry
4. Variation Corr.
Off
Manu.
5. Manual Entry
Auto
Delta L/L
000. 0’S
000. 0’W
Manual ∆θ
000. 0°W
Auto ∆θ
000. 0°W
Note: Variation Corr. and correction values appear only when a magnetic compass is
connected.
4. For position correction, press the [2] key to select Yes from the Position Corr field and press
the [ENTER/SELECT] key.
5. Press the [3] key to select Delta L/L Entry and press the [ENTER/SELECT] key.
6. Use the trackball to shift chart data.
7. Press the [ENTER/SELECT] key.
8. For bearing correction, press the [4] key to select Manu. from the Position Corr field, and then
press the [ENTER/SELECT] key.
9. Press the [5] key to select Manual Entry and press the [ENTER/SELECT] key.
10. Use the EBL or VRM control to rotate chart data.
11. Press the [ENTER/SELECT] key followed by the [MENU] key.
-1.42-
Separation zone
330
340
350
000
010
North marker
020
320
Target being tracked
Heading marker
030
040
310
050
300
Navline
060
Own ship safe contour
Heading line
290
070
280
080
090
270
260
100
250
110
240
Own ship vector
Approximate coastline
120
230
130
140
220
Dangerous side of own ship
safe contour may be
marked like this.
1.47.4
Planned route
210
150
200
190
180
170
160
Past position
ATA: Equally time-spaced positions of any
targets being tracked.
EPA: Past plot positons may not be equally timespaced, up to the operator. Targets not plotted
over 10 min will be dropped.
Displaying the radar map
1. Press the [MENU] key to display the Main menu.
2. Press the [8] key twice to display the MARK menu.
3. Press the [2] key to select ON from the DISP field.
4. Press the [ENTER/SELECT] key followed by the [MENU] key.
1.47.5
Erasing contents of the radar map
1. Press the [MENU] key.
2. Press the [8] key twice to display the MARK menu.
3. Press the [3] key 2-3 times to select the method of erasure: NO (individual marks), DISPLAY
(marks currently displayed), or ALL (all marks).
4. Press the [ENTER/SELECT] key followed by the [MENU] key.
-1.43-
1.48
Alarms
The table below summarizes alarms which may occur at various warning conditions.
Warning
HEADING
failure
Audible
alarm
2 beeps
Visual alarm
To quit alarm status
HDG label reads xxx.x° and the
message GYRO SIG MISSING
appears in red.
Display is automatically switched
to head-up mode within 1 min.
When the heading signal from
the gyrocompass restores
normal, the indication HDG SET
appears in red.
Target flashes.
Target alarm
(TAZ)
WATCH alarm
Beeps
Beeps
WATCH 0:00
(Label WATCH TIM turns red
and time count freezes at 0:00).
Own ship
lat/lon
Cursor lat/lon
System failure
None
xxx.x° In own ship position field
xxx.x° In cursor position field
None
Incorrect
keystroke
Double
beep tone
Message AZIMUTH SIGNAL
MISSING appears. No radar
echoes.
None
Log failure
2 beeps
EPFS failure
Continuous EPFS in red (EPFS: electronic
beep
position-finding system)
The indication also appears
when the GPS mode is
switched between GPS and
DGPS.
TRUE VECTOR None
indication
UPDATE PLOT None
COLLISION
LOG xx.x and LOG SIGNAL
MISSING appear, if a log signal
is absent for 30 sec while an os
speed has been > 5.0 kt.
Match the on-screen HDG
readout with the actual compass
reading, if necessary. To stop
the audible alarm press the
AUDIO OFF key.
Press the MODE key to erase
HDG SET and correct the
heading readout.
Press [TARGET ALARM] key.
Press the [AUDIO OFF] key.
The label WATCH turns to
normal video and the timer is
reset.
Make sure that own ship
position data is fed from
external radionav equipment.
Correct keystroke creates a
single beep provided that KEY
BEEP ON is selected in initial
settings.
If the SDME has failed, use the
Manual Speed mode or other
appropriate sensor.
To silence the beep, press the
[AUDIO OFF] key.
TRUE VECTOR (red) appears in
the second data cell when the
presentation mode is RM, goes
off in the North-up TM.
If you have failed to enter a
next EPA plot within 10 min,
this indication flashes. Plot
symbol of the target also
flashes.
Continuous COLLISION comes on when
beep
EPA- or ATA-tracked target is
on collision course.
-1.44-
Re-acquire the flashing target
within 5 min. Leave it if it is not
important.
Take evasive action or
terminate tracking of target.
Then, visual indication goes off.
General
Warning
Beep or
may not
beep
Corresponding labels turn red
on the SIGNAL MISSING cell.
TRIG: no trigger signal from the
scanner unit.
AZIMUTH: no azimuth signal
(turning signal). See SYSTEM
FAILURE column.
VIDEO: no video signal from
the RF transceiver.
GYRO: no gyrocompass signal
due to disconnected lines(s).
LOG: see LOG FAILURE
column.
CPU
None
LEDs light on the processor
board 03P9230.
-1.45-
Call a service representative.
Note: US Regulation prohibits
unqualified person to open the
covers.
1.49 Enlarging Close-in Targets (R-type only)
All targets within the first range ring can be enlarged as follows:
1. Press the [MENU] key to open the menu.
2. Press the [5] key twice to display the ECHO SIG menu.
1.
2.
3.
4.
5.
6.
7.
8.
9.
0.
ECHO SIG
COLOR
YEL GRN
*
CLTR SWEEP
OFF ON (LINK)
SWEEP LEVEL
1 2 3
ENHANCE
OFF ON
ND
2 ECHO
OFF ON
PULSE 1
PULSE 2
A/D CURVE
A B C D
CNTR ENHANCE
OFF ON
REALTIME HU
OFF ON
*Color available on R-type
ON(FIX)
8., 9., 0. R-type only
3. Press the [9] key to select OFF or ON from the CNTR (Center) ENHANCE field as
appropriate.
4. Press the [ENTER/SELECT] key followed by the [MENU] key.
1.50 A/D Converter Curve Setting (R-type only)
You may select an A/D curve according to objective, referring to the table below. The default
setting is A.
1.
2.
3.
4.
Press the [MENU] key to open the menu.
Press the [5] key twice to display the ECHO SIG menu.
Press the [8] to select desired curve referring to the table below.
Press the [ENTER/SELECT] key followed by the [MENU] key.
A A lot of green but little red. Float detection.
Noise is green in color.
Reduce sea reflections.
General navigation.
B Between A and C.
Normal use: Useful for target
discrimination.
C Little green but lot of red.
Fine noise.
Noise in yellow and red.
Long range detection.
Buoy detection.
D Little green but lot of red.
Fine noise.
Noise in red.
Long range detection.
Buoy detection.
Longer range detection than C
-1.46-
1.51 Echo Area (R-type only)
You may select the size of the area in which echoes are displayed as follows:
1. Press [MENU], [0], [0], [5], [5] to show the DISPLAY menu.
DISPLAY
1. ↑
2. NAV DATA
OFF ON
3. ECHO AREA
CIRCLE
WIDE
2. Press the [3] key to select CIRCLE or WIDE referring to the illustration below.
NAV
DATA
CIRCLE
NAV
DATA
WIDE
3. Press the [ENTER/SELECT] key followed by the [MENU] key.
1.52 Real Time Heading Up (R-type only)
The real time picture on the head-up mode can be displayed (default setting). If you prefer
traditional picture to the real time picture, select it as follows.
1. Press the [MENU] key to open the menu.
2. Press the [5] key twice to display the ECHO SIG menu.
3. Press the [0] key to select OFF or ON from the REALTIME HU field as appropriate.
4. Press the [ENTER/SELECT] key followed by the [MENU] key.
-1.47-
This page is intentionally left blank.
2
2.1
OPERATION OF AUTOMATIC TRACKING AID (ATA) ARP-17
Introduction
The FR-1500 MARK-3 series radar can accommodate an optional ATA (Automatic Tracking Aid)
module complying with IMO MSC.64(67) Annex 4 and IEC 60872-2. With the optional ATA circuit
board (ARP -17) fitted in the display unit, the radar will automatically acquire 10 targets coming into
the acquisition area. Once a target is acquired automatically or manually it is automatically tracked
within 0.2 to 32 nm, whether inside or outside the acquisition area.
Principal specifications
Auto tracking range: 0.1 - 32 nm, irrespective of range scale and acquisition range
Vector length:
0.5 sec., 1, 2, 3, 6, 12, 15, 30 min.
Orientation:
True velocity or relative velocity
Stabilization:
Sea or Ground stabilization
Motion trend:
Displayed within 20 scans, full accuracy within 60 scans after acquisition.
Past positions:
10 past positions at intervals of 30 sec, 1, 2, 3 or 6 min.
Alarms:
Visual and audible alarms against targets violating CPA/TCPA limits, lost
targets, targets crossing guard zone, system failure and target full status.
ATA Menu tree
MENU key --------------- 1. VIDEO PLOT/AIS* Requires RP-17 or RP-180. AIS not shown on RP-17
------- 2. TGT TRAIL
------- 3. TGT ALARM
------- 4. WATCH TIME
------- 5. ECHO SIG
------- 6. FUNC
------- 7. PLOT-------------------1. MARK DISP (OFF/ON)
------- 8. MARK
----- 2. ERASE
------- 9. BRILL
----- 3. VECT REF (REL/TRUE)
------- 0. OTHERS
----- 4. VECT TIME (30SEC/1/3/6/15/30MIN)
----- 5. CPA SET (OFF/0.5/1/1.5/2/3/4/5/6NM)
----- 6. TCPA SET (30SEC/1/2/3/4/5/6/12/15NM)
----- 7. TRACK (ON/OFF)
----- 8. AUDIO ALARM (OFF/ON)
----- 9. INTVAL (30SEC/1/2/3/6 min)
----- 0. ↓----------------1. ↑
-----2. AUTO ACQ (OFF/ON/SET)
-----3. GUARD ZONE (OFF/ON/SET)
-----4. TRACK TEST
-----5. LAND DISCRIM (0/1/2/3/4)
-----6. TTM (OFF/REL/TRUE)
-----7. VECTOR START (1 min/20 scans)
-----8. REF TGT VECTOR (OFF/ON)
-----9. TARGET BASED SPEED
-2.1-
2.2 Criteria of Tracking
A target measuring 800 m or more in the radial or circumferential direction is regarded as a
landmass and not acquired or tracked. Echoes smaller than 800 m are regarded as targets to
be tracked.
The FURUNO ARPA ATA video processor detects targets in the midst of noise and
discriminates radar echoes on the basis of their size. Target whose echo measurements are
greater than those of the largest ship in range or tangential extent are usually land and are
displayed only as normal radar video. All smaller ship-sized echoes which are less than this
dimension are further analyzed and regarded as ships and displayed as small circles
superimposed over the video echo.
When a target is first displayed, it is shown as having zero true speed but develops a course
vector as more information is collected. In accordance with the International Marine
Organization Automatic Radar Plotting Aid (IMO ARPA) requirements, an indication of the
motion trend should be available within 20 scans of antenna and full vector accuracy within 60
scans. The FURUNO ARPAs/ATAs comply with these requirements.
Acquisition and tracking
A target which is hit by 5 consecutive radar pulses is detected as a radar echo. Auto acquisition is
not defined in paints but in time, which should be less than 3 seconds of initial stage.
Manual acquisition is done by designating a detected echo with the trackball. Automatic acquisition
is done in the acquisition areas when a target is detected 5-7 times continuously depending upon
the congestion. Tracking is achieved when the target is clearly distinguishable on the display for 5
consecutive or alternate paints out of 10 consecutive scans whether acquired automatically or
manually. Required tracking facilities are available within 0.1-32 nm on range scales including 3, 6,
12 nm; full plotting information is available within one scan when the range scale has been
changed. Targets not detected in 5 consecutive scans become “lost targets”.
Quantization
The entire picture is converted to a digital from called “Quantified Video”. A sweep range is divided
into small segments and each range element is “1” if there is radar echo return above a threshold
level, or “0” if there is no return.
The digital radar signal is then analyzed by a ship-sized echo discriminator. As the antenna scans,
if there are 5 consecutive radar pulses with 1’s indicating an echo presence at the exact same
range, a target “start” is initiated. Since receiver noise is random, it is not three bang correlated,
and it is filtered out and not classified as an echo.
The same is true of radar interference. Electronic circuits track both the closet and most distant
edges of the echo. At the end of the scanning of the echo, the discriminator indicates the
measured maximum range extent and total angular extent subtended by the echo. If the echo is
larger than a ship-sized echo in range extent and/or angular width, adjusted as a function of range,
it is declared to be a coastline and the closet edge is put into memory as a map of the area.
This land outline is used to inhibit further acquisition and tracking of ship sized echoes beyond the
closest coast outline. 5 consecutive scans of coastal outline are retained in memory to allow for
signal variation. All smaller echoes are declared to be ship sized and the middle of the leading
edge is used to provide precise range and bearing coordinates of each echo on every scan. This
range/bearing data is matched to previous data and analyzed from scan-to-scan for consistency.
When it is determined to be as consistent as a real target, automatic acquisition occurs and
tracking is initiated.
-2.2-
Continued tracking and subsequent calculation develop the relative course and speed of the target
just as a man would do when plotting the relative course and speed of the target on the scope with
a grease pencil.
The true course and speed of own ship are computed from own ship’s gyro and speed inputs, and
the resulting course and speed of each tracked target is easily computed by vector summing of the
relative motion with own ship’s course and speed. The resulting true or relative vector is displayed
for each of the tracked targets. This process is updated continually for each target on every scan of
the radar.
Automatic acquisition areas and suppression lines
Performance of auto-acquisition is enhanced by controlling the limit lines (suppression lines) in the
former series of FURUNO ARPAs. In the ATA, the automatic acquisition rings are used instead of
the limit lines.
Auto acquisition rings work as suppression lines when viewed from the opposite direction. They
should be placed clear of a landmass or shoreline. The acquisition areas may be a full 360 degree
circle or sector of any angles. They are gyro stabilized.
Qualitative description of tracking error
The FURUNO ARPA or ATA accuracy complies with or exceed IMO standards.
Own ship maneuvers
For slow turns there is no effect. For very high turning rates (greater than 150°/ minute, depending
on gyro), there is some influence on all tracked targets which last for a minute or two and then all
tracked targets revert to full accuracy.
Other ship maneuvers
Target ship courses, lag 15 to 30 seconds at high relative speed, or 3 to 6 seconds at low (near 0)
relative speed. It is less accurate during a turn due to lag, but accuracy recovers quickly.
-2.3-
2.3
Activating, Deactivating the ATA
The ATA is activated/deactivated through the menu. Acquired targets are tracked internally when
the ATA is deactivated.
1. Adjust the A/C RAIN, A/C SEA and GAIN controls for proper radar picture.
2. Press [MENU], [7] to show the PLOT MENU 1
1.
PLOT MENU 1
MARK DISP
OFF
ON
2.
ERASE
3.
VECT REF
REL
TRUE
4.
VECT TIME
(min)
30sec 1 3 6
15 30
CPA SET
OFF 0.5NM 1NM
1.5NM 2NM 3NM
4NM 5NM 6NM
TCPA SET
(min)
30sec 1 2 3 4
5 6 12 15
TRACK
OFF ON
5.
6.
7.
8.
9.
AUDIO ALARM
OFF ON
INTVAL (min)
30sec 1 2
3 6
3. Press the [1] key to select ON or OFF from the MARK DISP field.
4. Press the [ENTER/SELECT] key.
5. Press the [MENU] key to close the menu.
-2.4-
2.4 Entering Own Ship’s Speed
The ATA requires own ship’s speed and heading data. Of these, the speed data can be entered
automatically from a speed log, navaid or manually through the menu.
Note: It is customary to use a speed relative to water for collision avoidance and a speed over the
ground for navigation purpose.
2.4.1
Automatic speed input
1. Press [MENU], [0], [0] to display the OTHERS menu.
1.
2.
3.
4.
5.
6.
7.
8.
9.
0.
OTHERS
HDG SET
SPD MODE
MAN
LOG
LOG (S-BT)
LOG (S-WT)
MAN SPD
SET & DRIFT
DISPLAY
MARK/LINE
TUNE
NAV DATA
EBL/+/PI
↓
2. Press the [2] key to select LOG or NAV (R-type only) from the SPD MODE field.
3. Press the [ENTER/SELECT] key.
4. Press the [MENU] key to close the menu.
Notes:
1) IMO Resolution A.823(19) for ARPA recommends that a speed log to be interfaced with an
ARPA should be capable of providing through-the-water speed. This applies to the ATA as
well.
2) Be sure not to select LOG when a speed log is not connected. If the log signal is not provided,
the ship’s speed readout at the screen top will be blank.
3) SPEED xx.x and SIGNAL MISSING “ LOG” appears if no log signal is present for 30 seconds
while the ship speed has been more than 5.0 kt.
-2.5-
2.4.2
Manual speed input
Select MAN at step 2 in preceeding procedure, press the [3] key twice, and enter a speed with
numeral keypads.
Target-based speed input
This mode is used when the ship’s SDME (log) is not operating properly or the vessel has no
device which detects ship’s leeward movement (Doppler sonar 2-axis speed log, etc.) and leeward
movement is not disregarded.
If you select target-based speed, the radar calculates own ship's speed relative to fixed reference
targets. The number of targets may be 1, 2 or 3. They appear as tracked targets, each shown in a
small circle, but without a vector. When a plural of reference targets are selected, the mean value
is used for stabilization and speed. A vector can be displayed for the reference target. This can be
done with REF TGT VECTOR on the PLOT menu 2.
1. Select a small ground mass target (small island, lighthouse) 0.2 to 24
nautical miles from own ship.
2. Place the cursor on the target.
3. Press [MENU], [7], [7], [0], [0], [9], [9].
1.
PLOT MENU 2
↑
2.
AUTO ACQ
OFF ON SET
3.
GUARD ZONE
OFF ON SET
4. Press the [MENU] key. The reference target mark (see below) appears at
the cursor position and the own ship data label changes from "LOG,"
4. TRACK TEST
OFF ON
"NAV" or "MENU" to "REF." Note that it takes 60 scans before a new
speed is displayed. If tracking has failed for a reference target, the target 5. LAND
is marked with a lost target mark (symbol formed with two triangles).
DISCRIM
0
changes to
R in 60 scans
2.5
2
3
4
6.
TTM
OFF
REL TRUE
7.
VECT START
1min
20SCAN
8.
REF TGT
VECTOR
OFF ON
9.
TARGET
BASED SPEED
Reference targets are marked with a circle having a reference number
(R1, R2, R3).
Note: Targets under automatic tracking condition should not be
selected as reference Targets.
1
Acquiring Targets
The ATA permits automatic acquisition (10 targets) plus manual acquisition (10 targets), or fully
manual acquisition (20 targets) within a range of 0.2 to 32 miles. The targets are automatically
numbered and the same numbers are not used more than once until the maximum capacity is
reached.
Before starting the ATA, check that heading and speed readouts at the top of the screen are
correct.
2.5.1
Manual acquisition
1. Place the cursor (+) on a target of interest by operating the trackball.
2. Press the [PLOT SYMBOL] key.
-2.6-
The plot symbol changes its shape according to the status as below. A vector appears in about
one minute after acquisition, indicating the target’s motion trend. If the target is consistently
detected for three minutes, the plot symbol changes to a solid mark. If acquisition fails, the target
symbol blinks and disappears shortly.
List of plot symbols
○R1
Reference target under steady tracking condition
20 scans of initial tracking
60 scans of initial tracking (Steady tracking)
1
Target selected for data readout
CPA alarm
Target in guard zone
Lost target is indicated by flashing diamond symbol. The diamond is formed
from two equal triangles. The lost target disappears after a while.
CAUTION - TARGET SWAP
When a target being tracked nears another target being tracked, the targets may be
swapped. When two targets acquired either automatically or manually come close
to each other, one of the two may become a Lost Target. Should this happen,
manual re-acquisition of the Lost Target may be required after the two have
separated.
2.5.2
Automatic acquisition
1. Press [MENU], [7], [7] to display the PLOT menu.
2. Press the [0] key twice.
3. Press the [2] key to select SET from the AUTO ACQ field.
4. Press the [ENTER/SELECT] key.
5. Place the cursor at upper (lower) left edge of area and press the [ENTER/SELECT] key.
6. Place the cursor at the lower (upper) right edge of the area and press the
[ENTER/SELECT] key.
0.5 nm
A
B
-2.7-
2.5.3
Changing plot symbol mark
The plot symbol for a target may be changed after acquiring the target. This feature is available on
the R-type radar.
1. Place the cursor on the plot symbol mark you wish to change.
2. Press the [ENTER/SELECT] key successively while pressing and holding down the [HL
OFF] control to select plot symbol mark desired.
Plot symbols
Note: Changing the plot symbol mark while a target is under acquisition (target marked
with dashed square) will cause all plot symbol marks above to be shown with dashed lines.
3. To inscribe a smaller plot symbol mark, place the cursor on any plot symbol, then press the
[ENTER/SELECT] key. Mark size can be alternately selected to large or small by repeating
this step.
2.6 Terminating Tracking of Targets
When the ATA has acquired 20 targets, no more acquisition occurs unless targets are lost. Should
this happen, cancel tracking of individual targets or all targets by the procedure described below.
2.6.1
Individual targets
Place the cursor (+) on a target which you do not want to be tracked any longer by operating the
trackball and press the [CANCEL/CLEAR] key.
2.6.2
All targets
All targets can be canceled from the PLOT menu as follows.
1. Press [MENU], [7], [7] to show the PLOT menu.
2. Press the [2] key twice to select ERASE.
3. Press the [ENTER/SELECT] key.
4. Press the [MENU] key.
-2.8-
2.7 Vectors True or Relative
Target vectors are displayed in relative or true mode. Own ship does not have a vector in relative
mode. You may select true or relative vector with VECT REF on the PLOT MENU 1.
2.7.1
Vector time
From the PLOT MENU 1, VECT TIME (or the length of vectors) can be set to 30 seconds, 1, 3, 6,
15 or 30 minutes and the selected vector time is indicated on the screen.
The vector tip shows an estimated position of the target after the selected vector time elapses. It
can be valuable to extend the vector length to evaluate the risk of collision with any target.
2.7.2
Vector start time
Whenever the range is changed the vectors for tracked targets is reestablished. You can select
when to start re-establishment of the vectors with VECT START on the PLOT MENU 2. The
operator has the choices of 1 min or 20 scans.
2.8
Displaying Target Data
The ATA calculates motion trends (range, bearing, course, speed, CPA and TCPA) of all targets
under tracking, and displays data of selected target at the top right corner of the screen.
Note: At a speed under 5 kt the target data is displayed with a delay due to filtration
processing.
Displaying data
Place the cursor on a wanted target and press the [ENTER/SELECT] key. Data on the selected
target is displayed on the screen. The data includes the follows;
BRG/RNG (Bearing/Range): RNG/BRG (Range/Bearing): Range and bearing from own ship to the
selected target with suffix T (True).
CSE/SPD (Course/Speed): Course and speed are displayed for the selected target with suffix T
(True).
CPA (Closest Point of Approach) is the closest range a target will approach to own ship. Do not
confuse it with the operator preset CPA alarm limit.
TCPA is the time to CPA measured with present speeds of own ship and the targets. Both CPA
and TCPA are automatically calculated. When a target ship has passed clear of own ship, the CPA
is displayed and the TCPA appears as “**.*” TCPA is counted up to 99.59 min. and beyond this it is
indicated as TCPA>99.9 min.
Note 1: MARK DISP on the PLOT menu must be turned on to display target data.
Note 2: Target data may be displayed with reference to North (True) or own ship heading
(Relative). The desired reference may be selected with TARGET DATA on the PLOT menu.
-2.9-
2.9
Past Position Display
The ATA displays equally time-spaced dots (maximum 10 dots at intervals of 30 seconds, 1, 2, 3 or
6 minutes) marking the past positions of any targets being tracked.
If a target changes its speed, the spacing will be uneven. If it changes the course, its plotted
course will not be a straight line in TM mode. In True Motion, the past position display is produced
relative to North (True Trails). In Relative Motion, it is relative to North or Heading as selected.
To turn the past position display on/off:
1. Press [MENU], [7], [7] to display the PLOT menu.
2. Press the [7] key to select ON or OFF from the TRACK field as appropriate.
Selecting plotting interval
On the PLOT MENU 1, select desired past position display plotting interval from the 9. INTVAL
field.
2.10
Set and Drift
Set, the direction of ocean current, can be manually entered in the nearest degree. Drift, the speed
of current, can also be entered manually, in 0.1 knot increments. Set and drift corrections are
beneficial for increasing the accuracy of the vector data. The correction is best made on relative
motion with true vector, watching landmasses, buoys, or stationary targets. Thus, the speed and
course of own ship over the ground are reciprocally calculated and compared with the relative
bearing and range to the reference target to produce a Set and Drift. These values are applied to
all targets. If stationary objects have vectors, the set and drift should be corrected until they lose
their vectors.
If own ship is equipped with a device to indicate ocean current movements, the values shown on it
may be used.
1. Press [MENU], [0], [0] to display the OTHERS menu.
2. Press the [4] key twice to select SET & DRIFT.
SET & DRIFT
1.
↓↑
2. SET & DRIFT OFF ON
3. SET
000.0°
4. DRIFT
00.0kt
3. Press the [2] key to select ON from the SET & DRIFT field, and then press the
[ENTER/SELECT] key.
4. Press the [3] key, enter SET value, and then press the [ENTER/SELECT] key.
5. Press the [4] key, enter DRIFT value, and then press the [ENTER/SELECT] key.
6. Press the [MENU] key.
-2.10-
2.11
2.11.1
Alarms
CPA/TCPA alarm
Visual and audible alarms are generated when the predicted CPA and TCPA of any target become
less than their preset limits.
The ATA continuously monitors the predicted range at the Closest Point of Approach (CPA) and
predicted time to CPA (TCPA) of each tracked target to own ship.
When the predicted CPA of any target becomes smaller than a preset CPA alarm range and its
predicted TCPA less than a preset TCPA alarm limit, the ATA releases an audible alarm. In
addition, the target plot symbol changes to a triangle and flashes together with its vector.
Provided that this feature is used correctly, it will help prevent the risk of collision by alerting you to
threatening targets. It is important that GAIN, A/C SEA, A/C RAIN and other radar controls are
properly adjusted and the ATA is set up so that it can track targets effectively.
CPA/TCPA alarm ranges must be set up properly taking into consideration the size, tonnage,
speed, turning performance and other characteristics of own ship.
The CPA/TCPA alarm feature should never be relied upon as a sole means for detecting 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.
Follow the steps shown below to set the CPA/TCPA alarm ranges:
1. Press [MENU], [7], [7] to display the PLOT menu.
2. Press [5] (CPA SET) to select CPA limit desired from the CPA SET line.
3. Press the [ENTER/SELECT] key.
4. Press [6] (TCPA SET) to select a TCPA limit desired.
5. Press the [ENTER/SELECT] key.
6. Press the [MENU] key to close the menu.
Silencing CPA/TCPA audible alarm
Press the [AUDIO OFF] key to acknowledge and silence the CPA/TCPA audible alarm.
The flashing of the triangle plot symbol and vector remain on the screen until the dangerous
situation is no longer present or you intentionally terminate tracking of the target by using the
[CANCEL/CLEAR] key.
2.11.2
Lost target alarm
When the system detects a lost target, tracking on the target is discontinued and the target symbol
becomes a flashing diamond, finally disappearing from the display. The normal plotting symbol is
restored to the target when the target is manually acquired.
Confirming lost target
1. Place cursor on target.
2. Press the [CANCEL/CLEAR] key.
-2.11-
2.11.3
Guard zone alarm
When a target comes in a guard zone, the audible alarm comes on with the visual indication
GUARD ZONE. The intruding target is denoted by an inverted triangle mark. If the target leaves
the zone, it changes to a normal tracking symbol (O).
You can set the guard zone as follows:
1. Press the [MENU], [7], [7] to display the PLOT menu.
2. Press the [0] key twice.
3. Press the [3] key to select GUARD ZONE.
4. Press the [3] key again to select SET and press the [ENTER/SELECT] key.
5. Set the cursor on one boundary of the guard ring and press the [ENTER/SELECT] key. Set
the cursor on the other boundary and press the [ENTER/SELECT] key.
The default (setting at switching on) Guard Zone covers 3.5-4 nm in a sector ±45° of the heading.
The range and sector of the GZ may be adjustable to cover full 360° as selected by the operator.
To disable the guard zone, select OFF at step 4 in the above procedure and press the
[ENTER/SELECT] key.
-2.12-
2.12 Track Test (Simulation Display)
Do this test when the radar is not being used.
The simulation display tests the ATA processor for proper operation. The figure below shows
the starting picture of the simulation display. Each mark moves as time passes. Check that
each target’s data is reasonable.
1. Press [MENU], [7], [7], [0], [0], [4], [4].
2. Press the [ENTER/SELECT] key to start the test.
3. It takes approximately three minutes for all vectors to be displayed completely on the
screen. The simulation display does not need radar, gyrocompass nor speed log input;
seven targets on various courses and speeds are provided.
Target
Course
Speed
(kt)
CPA
(nm)
TCPA
(min)
Target A
90.0°T
10.0
1.0
10.4
Target B
0.0°T
0.0
4.0
-
Target C
180.0°T
10.0
1.7
28.2
Target D
216.5°T
23.8
0.9
15.0
Target E
273.5°T
14.2
6.0
22.5
Target F
Target G
180.0°T
24.6°T
20.0
15.6
0.0
4.0
30.0
43.6
330
340
350 000 010
320
020
030
040
F
050
310
060
E
300
070
290
C
A
280
270
D
080
090
B
260
100
250
110
240
120
230
220
210
200
130
XX
G
140
150
190
180 170
160
4. The simulation continues for five minutes and then repeats. To quit the test sequence,
repeat step 1.
2.13
Outputting Target Data
Target data may be output to external equipment as follows:
1. Press [MENU], [7], [7], [0], [0].
2. Press the [6] key to select OFF, REL, TRUE from the TTM field as appropriate.
1. Press the [ENTER/SELECT] key followed by the [MENU] key.
-2.13-
2.14
Diagnostic Sequence
You can check the ATA Board for proper operation as follows. The self test does not require
operator intervention. It runs automatically when the power is placed on at regular intervals or on
operator demand.
1. Press [MENU], [0], [0], [0], [0].
2. Press the [2] key twice to start the diagnosis sequence. The results of the test appear as
shown below.
FR-1500 M-3 TEST
1. Program No. 03591521**
2. ROM Check
OK
3. RAM Check
OK
4. Antenna Rotation
24rpm
5. TX Trigger Frequency 3000Hz
6. Video Level
000
7. Video Signal OK
ARP TEST
1. Program No.
2. ROM Check
3. RAM Check
4. Speed Log
5. Course
6. Trigger
7. Video Signal
8. Bearing Pulse
9. Heading Pulse
10. Minimum Hit
11. Scan Time
12. Manual Acq
13. Auto Acq
14. FE-Data 1
15. FE-Data 2
Press MENU key to escape.
Press ENTER to check CRT.
** = Program Version No.
18590411** 18590421**
OK
OK
OK
OK 0.0KT
OK
OK
OK
OK
OK
OK
0274
00
00
0000
0000
If NG appears for any ATA-related item, call for service.
-2.14-
2.15
Factors Affecting ARPA Functions
Sea returns
If the radar anti-clutter control is adjusted properly, there is no serious effect because distant wave
clutter, not eliminated by this control, is filtered out by more than one bang correlation and
scan-to-scan matching of data.
Rain and snow
Clutter can be acquired and tracked as targets. Adjust the A/C RAIN control. If it is heavy rain,
switch to S-band if provided, or switch on the interference rejector on the radar. If heavy clutter still
exists, switch to manual acquisition. Accuracy can be affected.
Low clouds Usually no effect. If necessary, adjust the A/C RAIN control.
Non-synchronous emissions No effect.
Low gain
Insufficient or low radar receiver gain will result in some targets not being acquired at long distance.
ARPA display will be missing on one or more targets that could only be visible if the radar
sensitivity control (GAIN control) were increased.
The setting of the correct radar receiver gain is not critical but the target should be on the radar
display area and be clearly visible and well defined.
Manual acquisition is done if a target is positively displayed more than once. Automatic acquisition
is done when the target is detected 5-7 times continuously. Tracking is achieved when the target is
detected 5 times (not necessarily continuously) out of 10 scans. If not detected 6 times out of 10
scans, the target will become a "lost target." The ARPA or ATA will acquire a radar echo that is
present once in every six antenna scans and continue tracking if 1 in 10.
Second trace echoes
When the radar beam is super refracted, strong echoes may be received at such long ranges that
they appear on a different timebase sweep than the transmitted pulse. This gives an incorrect
range indication. Second and third trace echoes can be tracked if they are consistent enough to
meet acquisition and tracking criteria but target course and speed data will be in error.
Blind and shadow sectors
Radar shadow or blind areas caused by obstructions aboard ship, for example, funnels and masts,
in the path of the radar beam can result in reduction of radar beam intensity in that particular
direction. This may eliminate the detection of some targets. The ARPA or ATA system will lose
track of targets shortly after they are lost on the radar picture and if they remain in a blind zone.
These targets will however be acquired and tracked when they pass out of the blind zone and
again present normal radar echo. The angular width and bearing of any shadow sector should be
determined for their influence on the radar. In certain cases false echoes in the shadow sector
cause the ARPA or ATA system to acquire, track, and vector them. Shadow sectors should be
avoided.
-2.15-
Indirect echoes
A target at close range is usually picked up directly, but it can also be received as reflection from a
large, flat surface. This will result in the radar presenting two or more echoes on the display, each
at a different range. The ARPA or ATA can acquire and track the false echo if it is detected by five
consecutive scans. Reduction in radar GAIN can eliminate the multiple echoing but care should be
taken as range detection also will be reduced.
Radar interference
If interference is extreme due to another radar operating at close range, spiral "dotting" and/or false
targets may appear momentarily. The interference rejector can clear the display.
To receive radar beacon or SART signals, turn off the radar interference rejection and echo
average which operate on the correlation technique.
-2.16-
3
RADAR OBSERVATION
3.1
General
Minimum range
The minimum range is defined by the shortest distance at which, using a scale of 1.5 or 0.75 nm, a
target having an echoing area of 10 m2 is still shown separate from the point representing the
scanner position.
It is mainly dependent on the pulselength, scanner 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. The IMO Resolution A. 477 (XII) and IEC 936
require the minimum range to be less than 50 m. All FURUNO radars satisfy this requirement.
Maximum range
The maximum detecting range of the radar, Rmax, varies considerably depending on several
factors such as the height of the scanner 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:
h1:
h2:
radar horizon (nautical miles)
scanner height (m)
target height (m)
Radar horizon
Optical horizon
For example, if the height of the scanner 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).
X-band and S-band
In fair weather, the above equation does not give a significant difference between X- and S-band
radars. However, in heavy precipitation condition, an S-band radar would have better detection
than an X-band radar.
Radar resolution
There are two important factors in radar resolution (discrimination): bearing resolution and range
resolution.
-3.1-
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 scanner length
and reciprocally proportional to the wavelength. The length of the scanner radiator should be
chosen for a bearing resolution better than 2.5° (IMO Resolution). This condition is normally
satisfied with a radiator of 1.2 m (4 ft) or longer in the X-band. The S-band radar requires a radiator
of nominal 12 feet (3.6 m) in our product range.
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 pulselength only.
Practically, a 0.08 microsecond pulse offers the discrimination better than 35 m as do so with all
FURUNO radars.
Test targets for determining the range and bearing resolution are radar reflectors having an
echoing area of 10 m2.
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
position on the screen by selecting a suitable range.
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.
3.2
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.
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.
-3.2-
Side lobe echoes
Every time the radar pulse is transmitted, some radiation escapes on each side of the beam, called
“side lobes.” If a target exists where it can be detected by the side lobes 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.
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
Radar Radiator
True
echo
Radar mast
Mirror image
of target ship
False
echo
Virtual image by mirror effect
Shadow sector by stern block
Shadow sectors (see above right)
Funnels, stacks, masts, or derricks in the path of the scanner block the radar beam. If the angle
subtended at the scanner is more than a few degrees, a non-detecting sector may be produced.
Within this sector targets can not be detected.
-3.3-
3.3 SART (Search and Rescue Transponder)
A Search and Rescue Transponder (SART) is generally carried on the SOLAS Convention ships
under the GMDSS scheme. It serves as a homing device for the rescue party to reach the survival
craft in distress. It is triggered by any X-Band (3 cm) radar within a range of approximately 5 nm
(IMO Resolution A.802 (19)). 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. When the SART is within about 1 nm, the radar display
may show 12 responses equally spaced by 0.64 nautical miles.
Screen B: When SART
is close
Screen A: When SART
is distant
Echo of SART
Lines of 12 dots
are displayed in
concentric arcs.
Radar antenna
beamwidth
24 NM
Echo of
SART
1.5 NM
Position of
SART
Own ship's
position
9500 MHz
9200 MHz
Own ship's
position
SART mark
length
7.5 µs
Sweep time
Position of
SART
Radar receiver
bandwidth
95 µs
Low speed sweep signal
Sweep start
High speed sweep signal
Summary to detect SART response
No particular facilities are required to detect the SART responses; however, the following
precautions are necessary.
1. Use range scale of 6 or 12 nm as the spacing between the SART responses is about 0.6
nm (1125 m) to distinguish the SART.
2. To avoid a chance of regarding SART signals as noise, do the following:
- Turn off the automatic clutter suppression.
- Turn off the Interference Rejector.
- Turn off the signal processor such as Echo Average.
The FR-1500 Mark-3 series radars have a macro feature for easy detection of SART.
Press [F1], 0], [ENTER/SELECT]. The following setting is factory provided.
IR (Interference Rejector):
OFF
ECHO AVG:
A/C AUTO:
OFF
N REJ:
OFF
Signal processor:
OFF
ES:
OFF
Range:
12 nm
-3.4-
OFF
General remarks on receiving SART
Radar range scale
When looking for a SART it is preferable to use either the 6 or 12 nautical mile range scale. This is
because the total displayed length of the SART response of 12 (or 24) dots may extend
approximately 9.5 nautical miles beyond the position of the SART and it is necessary to see a
number of response dots to distinguish the SART from other responses.
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 mush 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 pulselength and is usually switched with the range scale and
the associated pulselength. 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.
Detuning the radar
To increase the visibility of the SART in clutter conditions, the radar may be detuned to reduce the
clutter without reducing the SART response. Radar with automatic frequency control may not
permit manual detune of the equipment. Care should be taken in operating the radar in the
detuned condition as other wanted navigational and anti-collision information may be removed.
The tuning should be returned to normal operation as soon as possible.
Gain
For maximum range SART detection the normal gain setting for long range detection should be
used, i.e., with a light background noise speckle visible.
A/C SEA control
For optimum range SART detection, this control should be set to the minimum. Care should be
exercised as wanted targets in sea clutter may be obscured. Note also that in clutter conditions the
first few dots of the SART response may not be detectable, irrespective of the setting of the
anti-clutter sea control. In this case, the position of the SART may be estimated by measuring 9.5
nautical miles from the furthest dot back towards own ship.
Some sets have automatic/manual anti-clutter sea control facilities in which case the operator is
advised to use manual control initially until the SART has been detected. The effect of the auto sea
control on the SART response can then be compared with manual control.
-3.5-
A/C RAIN control
This should be used normally (i.e. to break up areas of rain) when trying to detect a SART
response which, being a series of dots, is not affected by the action of the anti-clutter rain circuitry.
Note that RACON responses, which are often in the form of a long flash, will be affected by the use
of this control.
Some sets have automatic/manual anti-clutter rain control facilities in which case the operator is
advised to use manual control initially until the SART has been detected. The effect of the auto sea
control on the SART response can then be compared with manual control.
This information is excerpted from IMO SN/Circ 197 OPERATION OF MARINE RADAR FOR
SART DETECTION.
3.4 RACON (Radar Beacon)
A RACON is a radar beacon which emits pulses 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. Sometimes, the echo may appear solid, sometimes separated, depending on the
code and radar range scale in use.
Racon
-3.6-
4
OPERATION OF VIDEO PLOTTER RP-17 (OPTION)
(Needed for Radar Mapping)
The Video Plotter RP-17 is an optional circuit board which is accommodated in the
display unit of the FR-1500 MARK-3 series radars. It permits use of two memory cards:
a memory card(RAM) for storing the operator-created radar maps, and the other is a
chart card(ROM) storing FURUNO made digital charts.
The memory card enables the operator to create radar maps more precisely than the
standard supplied radar map card. The radar map can hold a maximum of 6,000 points.
The card permanently retains the data you have entered from the radar display or by
Lat/Long positions. Own ship and other ship tracks may be stored at a selected
interval.
Charts are superimposed on the radar picture without disturbing the radar observation.
The chart area is dependent on the radar range in use.
The drive for the ROM card can also drive the Electronic Reference Chart (ERC). The
ERC is a digital chart published by the Japanese Hydrographic Bureau. Note it is not
an ENC used for ECDIS.
For details, refer to the separate manual for the Video Plotter RP-17.
Note: The RP-17 may be used with the IMO specification radar, however the video
plotter display is not available.
-4.1-
This page is intentionally left blank.
5
MAINTENANCE
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
warning 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.
Severe injury or death can result if someone falls from the radar antenna mast.
Notice for technicians
The display unit designed to run on AC voltage has a
switch (S2) at its rear to cut off 115/230 V supply from
internal circuits. Turn off the switch when accessing
inside the display unit.
Switch S2
5.1 Periodic Maintenance Schedule
Periodic checks and maintenance are important for proper operation of any electronic systems.
This chapter contains maintenance instructions to be followed to obtain optimum performance and
the longest possible life of the equipment.
Interval
Check point
Check and measures
Remarks
3 to 6
months
Exposed nuts
and bolts on
antenna unit
Check for corroded or
loosened nuts and bolts. If
necessary, clean and repaint
them thickly. Replace them if
heavily corroded.
Sealing compound may be
used instead of paint. Apply a
small amount of grease
between nuts and bolts for
easy removal in future.
Antenna radiator
Check for dirt and cracks on
radiator surface. Thick dirt
should be wiped off with a
soft cloth dampened with
fresh water. If a crack is
found, apply a slight amount
of sealing compound or
adhesive as a temporary
remedy, then call for repair.
Do not use plastic solvent
(acetone) for cleaning. If you
need to remove ice from
antenna unit, use a wooden
hammer or plastic head
hammer. Crack on the unit
may cause water ingress,
causing serious damages to
internal circuits.
-5.1-
6 months
to one
year
5.2
Terminal strips
and plugs in
antenna unit
Open antenna cover to
check terminal strip and plug
connections inside. Also
check the rubber gasket of
antenna covers for
deterioration.
When closing antenna covers
in position, be careful not to
catch loose wires between
covers and unit.
CRT and
surrounding
components
High voltage at CRT and
surrounding components
attract dust in environment
which will cause poor
insulation. Ask your nearest
FURUNO representative or
dealer to clean internal
high-voltage components.
If CRT anode rubber cap or
wire sheath is cracked, ask
your dealer to replace it. Wait
for at least 3 minutes until high
voltage components (CRT and
HV capacitors) discharge their
residual charges before
accessing them.
Terminal strips,
sockets, earth
terminal
Check for loose
connections. Check contacts
and plugs for proper seating,
etc.
Life Expectancy of Major Parts
Parts
Type
Antenna motor D8G-571 (X-band) 42 rpm
Life expectancy
Remarks
Gears more than 10,000 h Wind load 100 kt
D8G-571 (X-band) 24 rpm
Magnetron
MG5389, X-band, 6 kW
2,000 - 3,000 h
MAF1422B, X-band, 6 kW
MG4006, X-band, 6 kW
MAF1425B, X-band, 12 kW
MG4010, X-band, 12 kW
MG5436, X-band, 25 kW
5.3
Replacement of Batteries
The GYRO CONVERTER Board (option) and the RP Board have a battery. The battery for the RP
Board preserves data when the power is turned off, and its life is about five years. When the
battery voltage of the battery on the RD Board is low, NG (No Good) appears at the diagnostic test
for the RP board. When this happens, contact your dealer to request replacement of the battery.
-5.2-
6
TROUBLESHOOTING
6.1 Easy Troubleshooting
This paragraph describes how to cure operational problems, which can be made by observing the
radar picture and using operator controls and keys without opening the display unit, antenna unit or
other equipment units.
Problem
Remedy
Power turned on but radar does
not operate at all.
Check fuse. If it is blown, replace it.
Control panel is not illuminated.
Marks, legends and noise appear
but no echo.
Check Tx fuse. If it is blown, replace it.
Picture not updated or picture
freeze up.
•
•
Check connection of signal cables.
For video freeze up turn off and on the radar.
TUNE control adjusted but poor
sensitivity.
•
•
•
•
•
Clean the radiator surface.
Remove water from the feeder line.
Second trace rejection is on. Turn it off. (See paragraph 1.31.)
Try to hit the [+] and [-] keys several times.
Turn off and on the radar.
Range changed but radar picture
does not change.
Only 2 parallel index lines when 6
lines are wanted.
Set index line interval correctly on the OTHER menu.
Poor discrimination in range.
Adjust A/C SEA control.
True motion presentation not
working properly.
Try to press MODE key a little harder.
Target not tracked correctly.
Adjust A/C SEA and A/C RAIN controls.
Range rings are not displayed.
Adjust brilliance of range rings on BRILL menu.
No own ship marker
On R-type check setting of OS MRK on OTHER menu.
-6.1-
6.2
Advanced-level Troubleshooting
This paragraph describes how to cure hardware and software troubles which should be carried out
by qualified service personnel.
Note: This radar equipment contains complex modules in which fault diagnosis and repair
down to component level are not practicable by users.
Serviceman qualification
All adjustments of radio transmitter during or coinciding with the installation, servicing, or
maintenance which may affect the proper operation must be performed by or under the immediate
supervision and responsibility of a person holding an operator certificate containing a ship radar
endorsement.
This is what the U.S. Codes of Federal Regulations part 80.169 implies (not exact extract).
As such, every administration sets forth its own rule; service personnel must be aware of this kind
of competency requirements.
Service call
When making a service call to your service agent, check S/N and symptom beforehand.
Problem
Probable causes or check Remedy
points
Power turned on but radar does 1
not operate at all.
2
Control panel is not illuminated.
3
CRT brilliance adjusted but no
picture.
Blown fuse F1 and F2.
1 Replace blown fuse.
Mains voltage/polarity
2 Correct wiring and input voltage.
Power supply board
3 Replace power supply board.
4
Illumination lamps
4 Replace defective lamps.
1
CRT high tension
voltage
1 Check high tension voltage supply with
utmost care. DANGER.
2
SPU board
2 Replace SPU board.
(Continued on next page)
-6.2-
Problem
Probable causes or check Remedy
points
Antenna not rotating
1
Antenna drive
mechanism (note that
the message BRG SIG
MISSING appears in
standby).
1 Make sure that there is no short circuit
across #1 and #2 of J482 on HV 9017
board.
2
Defective antenna
drive motor relay
(thermal relay K2,
200/220/380, 440/100
VAC)
2 Press relay reset button.
Data and marks not displayed
in Transmit status
1
SPU board
1 Replace SPU board.
Adjust GAIN control with A/C
SEA control set at minimum.
Marks and legends appear but
no noise or echo.
1
IF amplifier
1 Replace IF amplifier.
2
Signal cable between
antenna and display
2 Check continuously and isolation of
coaxial cable. Note: Disconnect the plug
and lugs at both ends of coaxial cable
before checking it by ohmmeter.
3
Video amplifier board
3 Check video coax line for secure
connection. If connection is good,
replace SPU board.
TX fuse F801
(Transmitter unit)
1 If fuse is blown, replace it. If it blows
again, the modulator or associated circuit
may be defective.
Magnetron
2
Check magnetron current with the
check meter in the sub panel. Replace
magnetron.
3
Modulator board
3
Replace modulator board.
4
SPU board
4 Replace SPU board.
1
Bearing signal generator 1
board (in antenna unit)
Check the connection of signal cables.
2
SPU board
2
Replace SPU board.
3
Video freeze-up
3
Turn off and on the radar.
1
SPU board
1
2
Gyro interface
Marks, legends and noise
1
appear but no echo:
(Transmission leak representing
own ship position is absent.)
2
Picture not updated or picture
freeze-up.
Incorrect orientation of picture
(Continued on next page)
-6.3-
HD SIG MISSING appears when the
heading pulse is not received during
standby.
2 Replace the gyro interface.
Problem
Probable causes or check Remedy
points
TUNE control adjusted but poor 1 Deteriorated magnetron
sensitivity.
1 With radar transmitting on 48 nm range,
check magnetron current. If current is below
normal, magnetron may be defective.
Replace it.
1
Detuned MIC
2
3
Dirt on radiator face
3 Clean the radiator surface.
4
Water ingress to the
waveguide or other
feeder line
4 Remove water from the feeder line.
5
Second trace rejection is 5 Disable the second-trace rejector
referring to section 1.31.
ON
1
Defective range key
1 Try to hit [+] and [-] range keys several
times. If unsuccessful, replacement of
keypad may be required.
2
SPU board
2 Replace SPU board.
3
Mother board
3 Replace mother board.
4
Video freeze-up
4 Turn off and on radar.
Bad contact of key
1 Repair contact of key.
SPU board
2 Replace SPU board.
Mother board
3 Replace mother board.
Echo stretch ineffective (Neither 1
ES1 nor ES2 is displayed)
SPU board
1 Replace SPU board.
Only 2 parallel index lines when 1
6 lines are wanted.
Incorrect setting of index 1 Set index line interval adequately
line intervals
Range rings are not displayed. 1
Adjust the brilliance of
1 Replace associated circuit board if
range rings at the BRILL
unsuccessful.
menu to see if intensity
is increased.
Range changed but radar
picture not changing.
Interference rejector inoperable 1
(interference rejection level not
2
displayed)
3
2
Check MIC detecting current. If it is
below normal value, MIC may have
become detuned. MIC must be tuned.
2 Replace SPU board.
SPU board
(Continued on next page)
-6.4-
Problem
Probable causes or check Remedy
points
Poor discrimination in range
1
Sea clutter control not
functioning properly
1
True motion presentation not
working correctly
1
Poor contact of MODE
key
1 Try to press MODE key a little harder.
2
Selection not accessed
2 Press MODE key until TM appears.
3
Speed entry incorrect
3 Enter correct own ship speed adequately
4
TM display inaccurate
4 Make sure that speed and compass
inputs are accurate.
1
Poor definition of targets 1 Adjust A/C SEA and A/C RAIN controls
in sea clutter
adequately.
Target nottracked correctly
-6.5-
Improper setting of A/C SEA control. If
A/C SEA is seen only at very close
range, suspect inaccurate frequency of
reference oscillator.
6.3 Diagnostic Test
A diagnostic test program is provided to enable testing of major circuit boards in the radar display
unit. Note that the normal radar picture is lost during this test.
Proceed as follows to execute the diagnostic test:
1. Press [MENU] [0] [0] to show the OTHERS main.
2. Press the [0] key twice to select the OTHERS sub menu.
3. Press the [2] key twice to select TEST.
The diagnostic test is executed and the screen shows test results as shown on the next
page. OKs appear for normal operation. ARP TEST results appear only when optional ARP
Board is mounted. If NG (No Good) appears, corresponding components may be defective.
Consult your dealer.
4. Small squares displayed on the test results screen are for testing the controls and keys
(except POWER and [ENTER/SELECT] keys). As you operate these controls and keys,
corresponding squares are highlighted, indicating that your control/key operations are
properly recognized.
5. Press the [ENTER/SELECT] key to check the display circuit. See the illustration page 6-7.
6. To terminate the diagnostic test, press the [MENU] key.
Sequence for diagnostic test
[MENU] KEY
↓ [0] key twice.
↓
MENU
1. VIDEO PLOT *
2. TGT TRAIL
3. TGT ALARM
4. WATCH TIME
5. ECHO SIG
6. FUNC
7. PLOT
8. MARK
9. BRILL
0. OTHERS
→
↓ [0] key twice.
OTHERS
1.
2.
HDG SET
SPD MODE
3.
4.
5.
6.
7.
8.
9.
0.
MAN SPD
SET & DRIFT
DISPLAY
MARK/LINE
TUNE
NAV DATA
EBL/VRM/+
↓
MAN
LOG
LOG (S-BT)
LOG (S-WT)
Press the [2] key twice to start test. The following appears.
-6.6-
→
1.
2.
3.
4.
5.
OTHERS
↑
TEST
DEGAUSS
OUTPUT ALARM
INSTALL
FR-1500 M-3 SERIES TEST
1. Program No.
0359152107
2. ROM Check
OK
3. RAM Check
OK
4. Antenna Rotation
rpm
5. TX Trigger Frequency
3000Hz
6. Video Level
000
7. Video Signal
OK
EPA
Press MENU key to escape
Press ENTER key to check CRT.
OK
(Color Pallet
From left: Red, Green,
Yellow, Blue, Pink, Light
Blue, White)
ARP TEST
1. Program No.
2. ROM Check
3. RAM Check
4. Speed Log
5. Course
6. Trigger
7. Video Signal
8. Bearing Pulse
9. Heading Pulse
10. Minimum Hit
11. Scan Time
12. Manual Acq.
13. Auto Acq.
14. FE-Data 1
15. FE-Data 2
1859041102
OK
OK
OK 0.0KT
OK
OK
OK
OK
OK
0003
0804
00
00
0000
0000
1859042101
OK
Control check: Bar increases in
length with clockwise
rotation.
000
000
EBL control
check
X: 000
Y: 000
VRM control
check
This test pattern appears when you punch [MENU], [0], [0], [2].
CRT ADJ
1.
2.H SIZE
3. H POSITION
4. V SIZE
5. V POSITION
6. PIN CUSHION
7. BRIGHTNESS
This test pattern appears when you punch [MENU], [0], [0], [2], [ENTER/SELECT].
-6.7-
6.4 Menu Hierarchy
[MENU] key
[2]
[3]
[4]
[5]
Requires Video Plotter RP-17 or RP-180 (option).
AIS not shown on RP-17.
1. VIDEO PLOT/AIS
2. TGT TRAIL
3. TGT ALARM
4. WATCH TIME
5. ECHO SIG
6. FUNC
7. PLOT
8. MARK
9. BRILL
0. OTHERS
[TGT TRAIL MENU]
1. TIME(Min)
15sec 30sec 1 3 6 15
30CONT
2. MODE
REL TRUE
3. SHADE
MONO MULTI
4. LEVEL
1 2 3
5. TRAIL COPY OFF ON
7: R-type only
6. THIN TRAIL OFF/ON
7. THIN MODE 1 2 3 4
* Target alarm fixed at "IN" on
IMO-type radars.
R-type has options of "IN" and
"OUT" for MODE 1 and 2.
[TGT ALARM MENU]
1. AREA
NO1 NO2
2. MODE1
IN OUT
3. MODE2
IN OUT
[WATCH TIME MENU]
1. ALM INTVL OFF 3 6 12 15 20min
[ECHO SIG MENU]
* COLOR on R-type only.
1. COLOR
YEL GRN *
2. CLTR SWEEP OFF ON(LINK) ON(FIX)
3. SWEEP LVL 1 2 3
4. ENHANCE
OFF ON
8, 9, 0: R-type only
5. 2ND ECHO OFF ON
6. PULSE 1
[6], [7]
1. ↑
7. PULSE 2
2. 0.5NM (S1/S2)
8. A/D CURVE A B C D
3. 0.75-1.5NM (S1/S2/M1)
9. CEN ENHANCE OFF ON
4. 3NM (S1/S2/M1/M2/M3)
0. REALTIME
OFF ON
5. 6-12NM (M1/M2/M3/L)
6. 24NM (M2/M3/L)
(Continued on next page)
: When the heading sensor is not connected, these functions are inoperative.
-6.8-
[MENU] key +
[6]
[FUNC MENU]
1. FUNC1 OFF ON
2. FUNC2 OFF ON
3. FUNC3 OFF ON
4. FUNC1 SET
5. FUNC2 SET
6. FUNC3 SET
7. F.2 SET
[4],
[5],
[6]
1. ↑
2. FUNC SEL
CST OCEAN R-SEA FLT BY
HBR L RAIN
3. ECHO AVG OFF 0.5 1 2 3
4. INT REJ
OFF 1 2 3
5. STRETCH
OFF 1 2 3
6. N REJ
OFF ON
7. ENHANCE
OFF ON
8. CONTRAST 1 2 3
9. A/C AUTO
OFF ON
0. PULSE
[0]
B
C
[7]
[8]
1. ↑
2. 0.5NM
3. 0.75-1.5NM
4. 3NM
5. 6-12NM
6. 24NM
[F.2 MENU]
Select by VRM knob
and press ENTER key.
[7]
S1
S1
S1
M1
M2
S2
S2
S2
M2
M3
1. TRAIL TIME
2. TRAIL MODE
3. TRAIL SHADE
4. TRAIL LEVEL
5. ALARM AREA
6. ALARM MODE
7. TGT COLOR
8. ECHO AVG
9. INT REJ
10. ECHO STRETCH
11. NOISE REJ
12. ECHO ENHANCE
13. 2ND ECHO
14. CONTRAST
15. PLOT MENU
16. MARK MODE
17. BRILL MENU
18. DRIFT MENU
19. NAV DATA
20. DISPLAY
21. SART
22. WATCH TIME
23. STERN MARK
24. OS MARK
25. TUNE A/M
26. EXT WP
27. OS POSN
28. CLTR SWEEP
29. P MONITOR
30. EBL/+/PI
31. VRM/+ RNG*
32. AIS(1) MENU**
33. AIS DATA**
Displayed only in stand-by. * R-type only.
** Not shown on RP-17.
M1
M1 M2 M3
M3 L
L
[PLOT MENU 1]
1. MARK DISP OFF ON
2. ERASE
3. VECT REF RELTRUE
4. VECT TIME 30sec 1 3 6 15 30min
5. CPA SET
OFF 0.5 1 1.5 2 3 4 5 6NM
6. TCPA SET 30sec 1 2 3 4 5 6 12 15min
7. TRACK
OFF ON
8. AUDIO ALARM OFF ON
9. INTVAL
30sec 1 2 3 6min*
0. ↓*
* Requires Auto Tracking Aid ARP-17 (Option).
If not, "PLOT No. DISP" appears.
[MARK MENU]
[0]
[PLOT MENU 2]*
1. ↑
2. AUTO ACQ
OFF ON SET
3. GUARD ZONE
OFF ON SET
4. TRACK TEST
OFF ON
5. LAND DISCRIM
0 1 2 3 4
6. TTM
OFF REL TRUE
7. VECT START
1min 20SCAN
8. REF TGT VECTOR OFF ON
9. TARGET BASED SPEDD
Requires Video Plotter RP-17 or RP-180.
1. Mark Selection
2. MOB
3. Display
On Off
4. Mark Color RED CYN PPL WHT
5. Position Correction
1. ERASE
2. MODE REL TRUE
Without RP-17 or RP-180
[5]
RADAR MAP menu
1. ↑
2. Position Corr. No Yes
3. Delta L/L Entry
4. Variation Corr. Off Manu. Auto
5. Manual Entry
With RP-17 or RP-180
(Continued on next page)
When pressing [8] key for chart overlay
RP-17 or RP-180.
-6.9-
[MENU] key +
[9]
[0]
[9]
[BRILL MENU]
1. TGT TRAIL
2. CHARACTER
3. HDG LINE
4. EBL/VRM
5. CURSOR
6. MARK
7. PLOT
8. OS SYMB
9. ↓*
[PLOTTER BRILL MENU]*
1. ↑
2. LAND
3. GRID
4. MARK
5. OS TRACK
6. TGT TRACK
7. COLOR
* Requires RP-17 Board.
[OTHER MENU]
1. HDG SET (0.0-359.9˚)
2. SPD MODE MAN LOG NAV*
LOG (S-BT) LOG (S-WT)
3. MAN SPD
4. SET & DRIFT
5. DISPLAY
6. MARK/LINE
7. TUNE
8. NAV DATA
9. EBL/VRM/+#
0. ↓
* NAV shown on R-type only.
[4]
[5]
#9. EBL/+/PI
shown on IMO type.
[6]
OFF ON
000.0˚
0-19.9kt
1. ↑
2. NAV DATA
3. ECHO AREA
OFF ON
CIRCLE WIDE
1. ↑
2. INDEX LINE
3. STERN MRK
4. OS MRK
2
6
OFF ON
OFF ON
[7]
1. ↑
2. MODE AUTO MAN
[8]
1. ↑
2. NAV SEL
GPS
3. EXT WP
OFF
4. OS POSN OFF
5. DEPTH
M
6. TEMP
˚C
7. TIME DIF UTC
8. LOCAL TIME
[9]
* 3. VRM/+ shown
on R-type only.
[0]
[3]
[4]
1. ↑
2. SET/DRIFT
3. SET
4. DRIFT
1. ↑
2. EBL/+/PI
3. VRM/+
REL TRUE
NM KM SM*
1. ↑
2. TEST
3. DEGAUSS
4. OUTPUT ALARM*
5. INSTALL (for technicians)
* 4. OUTPUT ALARM displayed
on R-type only.
1. ↑
2. DEGS INTV OFF 30sec 1 2min
3. DEGS DEG OFF 45˚ 90˚ 135˚
1. ↑
2. TIMER
3. TGT ALM
4. ATA/EPA
5. PLOTTER
-6.10-
LC
ON
L/L TD
FA ft
˚F
LOCAL
* R-type only.
OFF
OFF
OFF
OFF
ON
ON
ON
ON
7
OPTIONAL EQUIPMENT
7.1 Performance Monitor (Option)
A performance monitor is required for a radar installed on certain type of ship as determined by the
Administrations. The FURUNO PM-30 (for X-band radars) covers 9410 ± 50 MHz.
It works on the transponder principle. It sends response back to the radar antenna upon receiving
the pulse from the radar antenna and determines if transmitter or receiver or both are deteriorated
in comparison with the state of the precious calibration.
Operating the performance monitor
1.
When Radar Interswitch is connected (depending on the type), set it to the "straight" mode.
2.
Press [F1], [9] keys in this order. Monitoring arcs do not harm the radar performance but if
they disturb to radar observation, turn it off by pressing [F1] [9]. ([F1] [9] toggles Performance
Monitor ON and OFF.)
3.
When the Performance Monitor is on by [F1], [9] the following condition results:
PM power: ON, IR: OFF, ECHO AVG: OFF, ES: OFF, A/C AUTO: OFF, N REJ: OFF,
RANGE: 24 nm
Wait for 10 minutes and the radar screen will show several arcs, opposite to the heading marker
(provided that the performance monitor is installed behind the radar antenna as is normally the
case). If the radar transmitter and receiver are in good working conditions in as much as the
original state when the monitor was tuned up, the innermost are should appear at 12 nm and there
should be a total of 4 arcs.
The range of the innermost arc reduces 3 nm with every 3 dB loss of transmitted power. Receiver
sensitivity can be evaluated from the number of visible arcs; one arc is lost every 3 dB deterioration
of the sensitivity.
Transmitter performance
Receiver performance
Range to innermost arc
Loss
Number of arcs
Loss
12 nm
0 dB
4
0 dB
9 nm
3 dB
3
3 dB
6 nm
6 dB
2
6 dB
3 nm or less or none
> 10 dB
1
> 9 dB
0
> 12 dB
-7.1-
12 nm
4 arcs starting at 12 nm
Transmitter: normal
Receiver: normal
9 nm
9 nm
Transmitter: 3 dB loss
(Transmitter system has lost a
half of initial power. Suspect
magnetron.)
Transmitter: 3 dB loss
(Transmitter system has lost a
half of initial power. Suspect
magnetron.)
Receiver: normal
Receiver: 3 dB loss (Receiver
has lost a half of initial
sensitivity. Suspect receiver
front end, water ingress in
feeder system, etc.)
-7.2-
8
1
DIGITAL INTERFACE (IEC 61162-1 Edition 1 and 2)
I/O Sentences for Channel 1
Input
BWC, BWR, DBK *, DBS *, DBT, DPT, GDD *, GGA, GLL, GTD *, HDG, HDM *, MDA *, MTW (*),
RMA, RMB, RMC, VBW, VHB, VTG(*), ZDA
(* ) not recommended in IMO type, * R-Type Only
Output
RSD (every 4 s), TLL * (When A/C RAIN control is pressed.)
2
* R-Type Only
I/O Sentences of Channel 2
Channels 2 sentences have priority over channel 1 signals.
Input
DBK *, DBS *, DPT, MDA *, MTW, VBW
* R-type only
Output
TTM (Interval: 1-7 tgts, 2.5 sec.; 8-15 tgts, 5.0 sec., 16-20 tgts, 10.0 sec.)
3
I/O Sentences of Channel 3
Heading data, I/O sentences of channels 3 have priority over channel 1 signals when both are
input.
Input
HDB *, HDG, HDM, HDT, VHW
* R-type only
Output
None
4
Sentence Description
See pages which follow.
5
Priority
Nav data sentences below are read left to right, and in case of timeout the sentence right of last
read sentence is read. In case of multiple high priority sentences the sentences having the highest
priority is read. ** is read regardless of talker. Timeout is 90 seconds unless specified otherwise.
-8.1-
Position data
GPS:
GPGGA > GPRMC > GPGLL
LC:
LCRMA > LCGLL
Timeout: 30 seconds
Time difference (TD)
LCRMA > LCGLC > LCGTD *
(* R-type only0
Date, time data
GPZDA
Timeout: 10 seconds
Course heading, speed over ground
In the case of log
**VBW
In the case of EPFS
GPS:
GPVTG > GPRMC
LC:
LCVTG > LCRMA
Speed through water
**VBW
Water depth data
**DPT > **DBT (IMO-type)
**DPT >** DBK > **DBS > **DBT (R-type)
Water temperature data
**MTW (IMO type)
**MDA > **MTW (R-type)
Waypoint range and bearing data
Without RP-17
GPS:
GPBWR > GPBWC > GPRMB
LC:
LCBWR > LCBWC > LCRMB
With RP-17
Waypoint L/L data
GPS:
GPBWR > GPBWC > GPRMB
LC:
LCBWR > LCBWC > LCRMB
Ship's heading
T:
**HDT > **HDG > **HDM ± VAL > **VHW
R:
**HDM > **HDG > **HDT ± VAL > **VHW
NOTE:
ATA uses only AD-10 format gyrocompass data.
-8.2-
Description of Sentences
Note: Checksum for RMA, RMB and RMC is mandatory. Checksum for other sentences is
evaluated if it exists. If there is no checksum, data is treated as valid data.
BWC - Bearing and distance to waypoint
BWR - Bearing and distance to waypoint - rhumb line
Time (UTC) and distance and bearing to, and location of, a specified waypoint from present
position. $--BWR data is calculated along the rhumb line from present position rather than along
the great circle path.
$--BWC, hhmmss.ss, llll.ll, a yyyyy.yy, a, x.x, T, x.x, M, x.x, N, c--c, a*hh<CR><LF>
$--BWC, hhmmss.ss, llll.ll, a yyyyy.yy, a, x.x, T, x.x, M, x.x, N, c--c, a*hh<CR><LF>
Checksum
Mode indicator
(see note 1)
Waypoint ID*
Distance, nautical miles
Bearing, degrees magnetic*
Bearing, degrees true
Waypoint longitude, E/W*
Waypoint latitude, N/S*
UTC of observation*
*: Not used
NOTE 1: Positioning system Mode indicator:
A= Autonomous mode
D= Differential mode
E= Estimated (dead reckoning) mode
M= Manual input mode
S= Simulator mode
N= Data not valid
The Mode indicator field shall not be a null field.
-8.3-
DBS - Depth below sea surface
$--DBS,x,x,f,x,x,M,x,x,F*hh<CR><LF>
Checksum
Depth (fathoms) *
Depth (meters)
Depth (feet) *
* Not used
DBK - Depth below keel
DBT - Depth below transducer
Water depth referenced to the transducer.
$--DBT, x.x, f, x.x, M, x.x, F*hh<CR><LF>
Checksum
Water depth, fathoms *
Water depth, m
Water depth, feet *
* Not used
DPT - Depth
IMO Resolution A.224 (VII). Water depth relative to the transducer and offset of the measuring
transducer. Positive offset numbers provide the distance from the transducer to the waterline.
Negative offset numbers provide the distance from the transducer to the part of the keel of interest.
$--DPT, x.x, x.x*hh<CR><LF>
Checksum
Offset from transducer, in meters = distance from transducer to water-line
Water depth relative to the transducer, in meters
* Not used
-8.4-
GGA - Global positioning system (GPS) fix data
Time, position and fix related data for a GPS receiver.
Differential reference station ID, 0000-1023 *
Age of differential GPS data (see note 2) *
Units of geoidal separation, m *
Geoidal separation (see note 3) *
Units of antenna altitude, m *
Antenna altitude above/below
mean sea level (geoid) *
Horizontal dilution of precision *
Checksum
$--GGA, hhmmss.ss. 1111.11, a, yyyyy.yy, a, x, xx, x.x, x.x, M, x.x, M, x.x, xxxx*hh<CR><LF>
Number of satellites in use, 11-12, may be
different from the number in view *
GPS quality indicator (note 1)
Longitude - E/W
Latitude - N/S
UTC of position *
* Not used
NOTES
1 GPS quality indicator:
0 = fix not available or invalid
6 = Estimated (dead reckoning) mode
1 = GPS SPS mode, fix valid
7 = Manual input mode
2 = differential GPS, SPS mode, fix valid 8 = Simulator mode
3 = GPS PPS mode GPS fix valid
4 = Real Time Kinematic. Satellite system used in RTK mode with fixed integers
5 = Float RTK. Satellite system used in RTK mode with fixed floating integers
2 Time in seconds since last SC104 type 1 or 9 update, null field when DGPS is not used.
3 Geoidal separation: the difference between the WGS-84 earth ellipsoid and mean sea level (geoid), “-“ = mean sea
level below ellipsoid.
GLL - Geographic position - latitude/longitude
$--GLL, llll.ll, a yyyyy.yy, a, hhmmss.ss, A, a *hh<CR><LF>
Checksum
Mode indicator (see note 1 and note 2)
Status (see note 2) A = data valid V = data invalid
UTC of position*
Longitude, E/W
Latitude, N/S
*: Not used
NOTE 1: Positioning system Mode indicator:
A= Autonomous mode
D= Differential mode
E= Estimated (dead reckoning) mode
M= Manual input mode
S= Simulator mode
N= Data not valid
NOTE 2: The Mode Indicator field supplements the Status field (field 6). The Status field shall be set to V
= invalid for all values of Operating Mode except or A = Autonomous and D = Differential. The positioning
system Mode indicator and Status fields shall not be null fields.
-8.5-
HDG - Heading, deviation and variation
IMO Resolution A.382 (X). Heading (magnetic sensor reading), which if corrected for deviation, will
produce magnetic heading, which if offset by variation will provide true heading.
$--HDG, x.x, x.x, a, x.x, a*hh<CR><LF>
Checksum
Magnetic variation, degrees, E/W (see notes 2 and 3)
Magnetic deviation, degrees, E/W (see notes 1 and 3)
Magnetic sensor heading, degrees
* Not used
NOTES
1
To obtain magnetic heading:Add easterly deviation (E) to magnetic sensor reading
Subtract westerly deviation (W) from magnetic sensor reading
2
To obtain true heading:
Add easterly variation (E) to magnetic heading
Subtract westerly variation (W) from magnetic heading
3
Variation and deviation fields will be null fields if unknown.
HDT - Heading True
$--HDT, x.x, T*hh<CR><LF>
* Not used
Checksum
Heading, degree true
MTW - Water temperature
$--MTW, x.x, C*hh<CR><LF>
Checksum
Temperature, degrees C
* Not used
-8.6-
RMA - Recommended minimum specific LORAN-C data
Position, course and speed data provided by a LORAN-C receiver. Time differences A and B are
those used in computing latitude/longitude. Checksum is mandatory in this sentence. This
sentence is transmitted at intervals not exceeding 2 s and is always accompanied by RMB when a
destination waypoint is active. RMA and RMB are the recommended minimum data to be provided
by a LORAN-C receiver. All data fields must be provided, null fields used only when data is
temporarily unavailable.
$--RMA, A, llll.ll, a yyyyy.yy, a, x.x, x.x, x.x, x.x, x.x,a,a*hh<CR><LF>
Checksum, mandatory for RMA
Mode indicator (see note 1 and note 2)
Magnetic variation*
Course over ground*
Speed over ground*
Time difference B*
Time difference A, µs
Longitude, degrees E/W
Latitude, degrees N/S
*: Not used
Status (see note 3): A= data valid, V= blink, cycle or SNR warning
NOTE 1: Positioning system Mode indicator:
A= Autonomous mode
D= Differential mode
E= Estimated (dead reckoning) mode
M= Manual input mode
S= Simulator mode
N= Data not valid
NOTE 2: The positioning system Mode indicator field supplements the Status field (field No.1), which
shall be set to V = invalid for all values of Mode indicator except for A = Autonomous and D = Differential.
The positioning system Mode indicator and Status fields shall not be null field.
See paragraph 1.39 on page 1.37 for more information.
-8.7-
RMB - Recommended minimum navigation information
Navigation data from present position to a destination waypoint provided by a LORAN-C, TRANSIT,
OMEGA, GPS, DECCA, navigation computer or other integrated navigation system. Checksum is
mandatory in this sentence. This sentence always accompanies RMA or RMC sentences when a
destination is active when provided by a LORAN-C, TRANSIT or GPS receiver, other systems may
transmit $--RMB without $--RMA or $--RMC.
$--RMB, A, x.x, a, c--c, c--c, llll.ll, a yyyyy.yy, a,x.x, x.x, x.x,A,a*hh<CR><LF>
Checksum, mandatory for RMB
Mode indicator (see note 2 and note 3)
Arrival status*
Destination closing velocity, knots*
Bearing to desination,degrees true
Range to destination, mautical miles (see note 1)
Destinaton waypoint longitude, E/W*
Destination waypoint latitude, N/S*
Distination waypoint ID*
Origin waypoint ID*
Direction to steer L/R*
Cross track error*
*: Not used
Status (see note 3): A= data valid, V= navigation receiver warning
NOTE 1: If range to destination exceeds 999,9 nautical miles, display 999,9.
NOTE 2: Positioning system Mode indicator:
A= Autonomous mode
D= Differential mode
E= Estimated (dead reckoning) mode
M= Manual input mode
S= Simulator mode
N= Data not valid
NOTE 3: The positioning system Mode indicator field supplements the Status field (field No.1), which
shall be set to V = invalid for all values of Mode indicator except for A = Autonomous and D = Differential.
The positioning system Mode indicator and Status fields shall not be null field.
-8.8-
RMC - Recommended specific GPS/TRANSIT data
Time, date, position, course and speed data provided by a GPS or TRANSIT navigation receiver.
Checksum is mandatory in this sentence. This sentence is transmitted at intervals not exceeding 2
s and is always accompanied by RMB when a destination waypoint is active. RMC and RMB are
the recommended minimum data to be provided by a GPS or TRANSIT receiver. All data fields
must be provided, null fields used only when data is temporarily unavailable.
$--RMC, hhmmss.ss, A, llll.ll, a yyyyy.yy, a, x.x, x.x, xxxxxx, x.x,a, a*hh<CR><LF>
Checksu, mandatory for RMC
Mode indicator (see notes 2 and 3)
Magnetic variation, degrees, E/W (see note 1)
Data: dd/mm/yy*
Course over ground, degrees true
Speed over ground, knots
Longitude, E/W
Latitude, N/S
Status (see note 3) A= data valid V= navigation receiver warning
UTC of position fix*
*: Not used
NOTE 1: Easterly variation (E) subtracts from true course. Westerly variation (W) adds to true course.
NOTE 2: Positioning system Mode indicator:
A= Autonomous mode
D= Differential mode
E= Estimated (dead reckoning) mode
M= Manual input mode
S= Simulator mode
N= Data not valid
NOTE 3: The positioning system Mode indicator field supplements the Status field (field No.2), which shall be
set to V = invalid for all values of Mode indicator except for A = Autonomous and D = Differential. The
positioning system Mode indicator and Status fields shall not be null fields.
RSD - Radar system data
IMO Resolution A.477 (XII). Radar display setting data.
$--RSD, x.x, x.x, x.x, x.x, x.x, x.x, x.x, x.x, x.x, x.x, x.x, a, a*hh<CR><LF>
Checksum
Display rotation (see note 1)
Range units, K/N/S
Range scale in use
Cursor bearing, degrees clockwise from 0°
Cursor range, from own ship
EBL 2, degrees
VRM 2, range
Origin 2 bearing (see note 2) *
Origin 2 range (see note 2) *
Bearing line 1 (EBL 1), degrees from 0°
Variable range marker 1 (VRM 1), range
Origin 1 bearing, degrees from 0° (see note 2) *
Origin 1 range, from own ship (see note 2) *
* Not used
NOTES
1
Display rotation: C = course-up, course-over-ground up, degrees true
H = head-up, ship ユ s heading (center-line) 0° up
N = north-up, true north is 0° up
2 Origin 1 and 2 are located at the stated range and bearing from own ship and provide for two independent
sets of variable range markers (VRM) and electronic bearing lines (EBL) originating away from own ship
position.
-8.9-
TLL - Target latitude and longitude
Target number, name, position and time tag for use in systems tracking targets.
$--TLL, xx, 1111.11, a, yyyyy.yy, a, c--c, hhmmss.ss, a, a*hh<CR><LF>
Checksum
Reference target = R, null otherwise *
Target status (see note) *
UTC of data *
Target name *
Longitude, E/W
Latitude, N/S
Target number 00 – 99 *
* Not used
NOTE - Target status:
L = lost, tracked target has been lost
Q = query, target in the process of acquisition
T = tracking
TTM - Tracked target message
$RATTM,xx,x.x,x.x,a,x.x,x.x,a,x.x,x.x,a,c---c,a,a,hhmmss.ss,a*hh<CR><LF>
Checksum
Type of acquisition (A = automatic,
M = manual)
Time of data *
Reference target = R, null otherwise
Target status
User data (e.g., target name) *
Speed/distance unit (K/N/S)
Time to CPA, minutes
Distance of closest point of approach
Target course (degrees true), true/relative (T/R)
Target speed
Bearing from own ship (degrees), true/relative (T/R)
Target distance from own ship
Target number (00 to 99)
Not used *
-8.10-
VBW - Dual ground/water speed: This sentence to be expanded as shown below:
$--VBW, x.x, x.x, A, x.x, x.x, A, x.x, A, x.x, A *hh<CR><LF>
Checksum
Status2 , stern ground speed
A = data valid
V = invalid
Stern transverse ground speed* 1, 2, knots
Status2, stern water speed*, A = data valid
Stern transverse water speed*1, 2, knots
Status, ground speed*, A = data valid
Transverse ground speed1 , knots
Longitudinal ground speed1 , knots
Status, water speed, A = data valid
Transverse water speed1 , knots
Longitudinal water speed1, knots
* = Not used
NOTES
1. Transverse speed: “-“ = port, Longitudinal speed: “-“astern.
2. For vessels equipped with dual water and/or ground speed systems ; data for the equipment mounted towards the
stern are reported in these fields.
VHW - Water speed (R-type only) and heading
The compass heading to which the vessel points and the speed of the vessel relative to the water.
$--VHW, x.x, T, x.x, M, x.x, N, x.x, K *hh<CR><LF>
Checksum
Water speed, K = km/h *
Water speed, knots * (R-type only)
Longitudinal heading (M = magnetic bearing) *
Longitudinal heading (T = true bearing) *
Not used *
VTG - Course over ground and ground speed (R-TYPE ONLY)
The actual course and speed relative to the ground.
$--VTG, x.x, T, x.x, M, x.x, N, x.x, K*hh<CR><LF>
Checksum
Speed, K = km/h *
Speed, knots *
Course degrees magnetic *
Course degrees true
Not used *
-8.11-
ZDA - Time and date
UTC, day, month, year and local time zone.
$--ZDA. hhmmss.ss, xx, xx, xxxx, xx, xx*hh<CR><LF>
Checksum
Local zone description, minutes *
Local zone description, hours *
Year
Month, 01 to 12
Day, 0 to 31
UTC
Not used *
LOCAL = UTC + Time difference
-8.12-
9
9.1
PARTS LOCATION and PARTS LIST
ANTENNA UNIT, SCANNER OUTLINE and RF MODULE
ATA Board ARP-17
(Option)
18P904A
Figure A-1 Display unit, right side view
Cooling Fan
MMS-06C24DS-R01
RP-17 Board (Option)
03P9259C
DC-PTU Board
03P9223C/D(DC spec.)
AC-PTU Board
03P9228C/D(AC spec.)
HV Board
03P9017A(FR-1505/1510MARK-3)
03P9017B(FR-1525MARK-3)
Figure A-2 Display unit, left side view
-9.1-
CRT
RGB-BUFF Board (Option)
03P9229
SPU Board
03P9230
Figure A-3 Display unit, top view
GYRO
CONVERTER
Board (Option)
64P1106A
PM-IN Board
(Option)
03P9225
Figure A-4 Display unit, rear view
Figure A-5 Scanner unit
-9.2-
IF Board
03P9232
MIC Assy.
RU-9099 (For RTR-067)
RU-9253 (For RTR-063)
RU-9371 (For RTR-062)
Diode Limiter
RU-9099
RFC Board
03P9243
RT
**K R-0
W 6*
Figure A-6 RF module
-9.3-
MD Board
03P9244
C
Fan Motor Assy.
03-1900
J811
B
J812
A
Pulse Transformaer
RT-9025 (For RTR-062, RTR-067)
RT-9023 (For RTR-063)
4
6
Magnetron
MG5389, MAF1422B (For RTR-067)
MAF1425B (For RTR-062)
MG4010 (For RTR-062)
MG5436 (For RTR-063)
Figure A-7 RF module, rear view
-9.4-
9.2
Circuit diagrams
FR-1500 Mark-3 SERIES SERIAL INTERFACE I/O CIRCUIT
03P9230
U42 SN751178NS
TALKER (60 mA max)
LISTENER (2 mA at 2 V)
CHANNEL 1 OUTPUT
RSD, TLL
4
J202 B5B-XH-A
1
TD1-A
2
TD1-B
FL10
13
15
14
FL11
CHANNEL 1
INPUT
BWC, BWR,
DBS, etc.
RD1-A
3
RD1-B
4
GND
U89 PC400
R385 47
FL9
1
CR40
1SS181
FL8
4
U3
CPU
3
5
J203 B5B-XH-A
1
2
CHANNEL 2
INPUT
DBK, DBS, DPT,
MDA, MTW, VBW
RD2-A
3
RD2-B
4
GND
FL13
U91 PC400
R401 47
1
CR43
1SS181
FL12
4
U23
3
5
18P9004
ARP-17
U12 SN751178NS
TALKER (60 mA max)
12
J2 B5B-XH-A
CHANNEL 2
OUTPUT
TTM
ARPA TXD B
ARPA TXD A
1
2
TX1-C
13
TX1-H
14
CPU
15
3
4
GND
5
J208
CHANNEL 3
INPUT
HDB, HDM,
HDT, VHW
FL15
RD1-A
3
RD1-B
4
GND
U94 PC400
R417 47
FL14
5
-9.5-
1
CR47
1SS181
4
3
U3
CPU
FR-1500 MARK-3 series interfacing diagram
CHANNEL 2 OUTPUT
TTM
-9.6-
-9.7-
9.3
.1
Parts list
FR-1505/1515/1525 MARK-3
FR-2115/2125
ELECTRICAL PARTS LIST
98/5
SYMBOL TYPE
DISPLAY UNIT RDP-119
Unit
DISPLAY UNIT RDP-119
Ref. Dwg.
C3464-K02-A
Blk. No.
CODE No.
REMARKS
SHIPPABLE
ASSEMBLY
HV9017A, HV
HV9017B, HV
03P9230A, SPU
64P1106A, GC
03P9259C, RP-17
18P9004, ARP-17
18P9007, ARP-10
CRT ASSEMBLY
008-481-630
008-481-640
008-490-980
004-412-220
008-492-900
008-458-550
008-478-300
1505, 1510 M3
1525 M3
X
X
X
X
X
1B8
0A1510
PANEL ASSEMBLY
000-141-033
-
RDP-119, PNL/SW
008-490-080
008-487-390
PAF BOARD
English
X
X
008-490-290
008-490-300
008-490-270
008-490-280
115 VAC
230 VAC
12 V
24/32 V
X
X
X
X
PRINTED CIRCUIT BOARD
1B4
1B5
4B1
4B2
4B3
OPTIONAL
OPTIONAL
OPTIONAL
OPTIONAL
POWER BLOCK ASSY
RDP-119-6/10/25 KW
RDP-119-6/10/25 KW
RDP-119-6/10 KW
RDP-119-10/25 KW
FUSE
F1351
20A
25 A
FGB0 5A
24/32 V MAINS
12 V
220 V
FILTER
FL1
LF-205A
000-588-411
For 115/230 VAC
000-129-228
000-474-214
POWER
AC UNIT
FAN ASSY
03-1950, FAN-P2P
SWITCH
S1
S2
SDDLD
S-331
.
-9.8-
2
Model
FR-1505/1515/1525 MARK-3
FR-2115/2125
ELECTRICAL PARTS LIST
98/5
ANTENNA UNIT RSB-0074/0067/0063
Unit
SCANNER
UNIT
Ref. Dwg.
Blk. NO.
C3466-K02-B
SYMBOL TYPE
RSB-0074/0075
CODE No.
REMARKS
SHIPPABLE
ASSEMBLY
008-487-260
008-487-280
008-487-300
008-487-320
008-487-240
008-487-230
008-312-370
6,12 KW
25 KW
6,12 KW
25 KW
2B4
2B6
2B7
PRINTED CIRCUIT BOARD
03P9243A, RFC
03P9243B, RFC
03P9244A, MD
03P9244B, MD
03P9232, IF
03P9242, TB
MP-3795
X
X
X
X
X
X
X
-
SCANNER CHASSIS
RSB-0074
008-488-010
X
-
RSB-0075
008-488-030
24 rpm, w/o RF
module
42 rpm, w/o RF
module
008-487-160
008-487-170
008-490-580
10, 12 KW
25 KW
6 KW
X
X
X
008-487-350
008-487-340
25 KW
6, 12 KW
X
X
MOTOR
D8G-516
000-631-715
D8G-571
000-136-566
B802
109P0824H602
000-140-764
24 rpm,
w/capacitor
42 rpm,
w/capacitor
25 kW, w/cable
X
S901
SWITCH
RS-1 NO
000-478-301
CR871
DIODE
HVR-1X-40B
MD-12N1
HVR-1X-40B
000-121-156
000-133-735
000-121-156
CR880
DIODE LIMITER
RU-9099
000-126-369
2B2
2B3
U801
B801
CR870
RF MODULE
RTR-062
RTR-063
RTR-067
MIC ASSEMBLY
RU-9253
RU-9371
-9.9-
10, 12 KW
25 KW
6 KW
X
SYMBOL TYPE
CODE No.
REMARKS
HY801
CIRCULATOR
RC-3686
000-106-850
R899
RESISTOR
ERF-10HMJ102
000-123-395
TRANSFORMER
RT-9025
RT-9023
000-123-823
000-123-394
6, 10, 12 KW
F25 KW
MAGNETRON
M5436
MAF1425B
MG4010
MG5389
MAF1422B
MG4006
000-140-762
000-146-872
000-150-839
000-135-146
000-146-871
000-150-838
25 kW
12 kW
12 kW
6 kW
6 kW
6 kW
T801
V801
-9.10-
SHIPPABLE
ASSEMBLY