Furuno FR-1710 User Manual

MARINE RADAR
MODEL
FR-1710/1725/1760DS
A
(
C
9-52, Ashihara-cho, Nishinomiya, Japan
Telephone: 0798-65-2111 Telefax: 0798-65-4200
ll rights reserved.
Printed in Japan
Your Local Agent/Dealer
FIRST EDITION : NOV. 1998 L : APR. 9, 2001
PUB. No. OME-34530
YOSH)
FR-1700 SERIES

SAFETY INSTRUCTIONS

DANGER
Before turning on the radar, make sure that there is no one near the antenna.
Serious injury or even death may result if a rotating antenna strikes someone standing nearby.
WARNING
Radio Frequency Radiation Hazard
The radar scanner emits electromagnetic radio frequency (RF) energy which can be harmful, particularly to your eyes. Never look directly into the scanner aperture from a close distance while the radar is in oper­ation or expose yourself to the transmitting scanner at a close distance.
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.
Distances at which RF radiation levels of 100 and 10 W/m table below.
Note: If the scanner unit is installed at a close distance in front of the wheelhouse, your administration may require halt of transmission within a certain sector of scanner revolution. This is possible Ask your FURUNO representative or dealer to provide this feature.
Model
FR-1760DS
FR-1710
FR-1725
2
exist are given in the
Radiator
type
SN4A — 1.2 m SN5A — 1.0 m
XN12AF — 0.15 m XN20AF — —
XN20AF — 1.1 m
SN24AF — 1.0 m
Distance to
100W/m
point
Distance to
2
10W/m
point
2
i
WARNING
WARNING
DANGER
DANGER
DANGER
Danger/Warning Labels in Display Unit
ELECTRICAL SHOCK HAZARD
Do not open the equipment.
Only qualified personnel should work inside the equipment.
Turn off the radar power switch before servicing the scanner unit. Post a warn­ing sign near the switch indicating it should not be turned on while the scanner unit is being serviced.
Prevent the potential risk of being struck by the rotating scanner and exposure to RF radiation hazard.
Wear a safety belt and hard hat when working on the scanner unit.
This radar system contains the danger/ warning labels shown below. Do not remove the labels. If a label is peeling off or is illeg­ible, contact a FURUNO agent for replace­ment.
WARNING
To avoid electrical shock, do not remove cover. No user-serviceable parts inside.
Name : Warning Label Type : 86-003-1011 Code No. : 100-236-230
DANGER
Electrical shock hazard. Do not touch parts inside this cover.
Serious injury or death can result if someone falls from the radar scanner mast.
Do not disassemble or modify the equipment.
Fire, electrical shock or serious injury can result.
Turn off the power immediately if water leaks into the equipment or the equip­ment is emitting smoke or fire.
Continued use of the equipment can cause fire or electrical shock.
Use the proper fuse.
Fuse rating is shown on the equipment. Use of a wrong fuse can result in equipment damage.
Keep heater away from equipment.
Name : Danger Label Type : 14-055-4202 Code No. : 100-245-220
DANGER
Electrical shock hazard. Turn off power before servicing.
Name : Danger Label Type : 66-022-2012 Code No. : 100-237-730
DANGER
Electrical shock hazard. Do not touch anode cap or its cable.
Name : Danger Label Type : 14-055-4201 Code No. : 100-243-450
Heat can alter equipment shape and melt the power cord, which can cause fire or electrical shock.
ii

TABLE OF CONTENTS

INTRODUCTION.................................................................................v
SYSTEM CONFIGURATION.............................................................vi|
MENU TREE ....................................................................................viii
OPERATIONAL OVERVIEW
1.1 Turning on the Power ................................................................................................... 1-1
1.2 Transmitter ON............................................................................................................. 1-1
1.3 Control Description....................................................................................................... 1-2
1.4 CRT Brilliance .............................................................................................................. 1-3
1.5 Control Panel Backlighting........................................................................................... 1-3
1.6 Tuning the Receiver ..................................................................................................... 1-3
1.7 Degaussing the Screen................................................................................................ 1-4
1.8 Initializing the Compass Readout ................................................................................ 1-4
1.9 On-screen Legends and Markers ................................................................................ 1-5
1.10 Presentation Modes ................................................................................................... 1-6
1.11 Selecting the Range Scale ......................................................................................... 1-8
1.12 Entering Own Ship’s Speed ....................................................................................... 1-9
1.13 Pulselength, Echo Stretch........................................................................................ 1-10
1.14 Adjusting the Sensitivity ........................................................................................... 1-12
1.15 Suppressing Sea Clutter .......................................................................................... 1-12
1.16 Suppressing Precipitation Clutter............................................................................. 1-13
1.17 Interference Rejector ............................................................................................... 1-13
1.18 Measuring the Range............................................................................................... 1-14
1.19 Measuring Bearing................................................................................................... 1-14
1.20 Collision Assessment by the Offset EBL .................................................................. 1-15
1.21 Measuring Range and Bearing Between Two Targets ............................................. 1-15
1.22 Setting a Target Alarm Zone..................................................................................... 1-16
1.23 Off-centering (shift) .................................................................................................. 1-17
1.24 Echo Averaging........................................................................................................ 1-18
1.25 Electronic Plotting Aid (EPA) .................................................................................... 1-19
1.26 Target Trails (Echo T rails) ........................................................................................ 1-22
1.27 Parallel Index Lines.................................................................................................. 1-25
1.28 Origin Mark............................................................................................................... 1-25
1.29 Zoom ........................................................................................................................ 1-26
1.30 Markers .................................................................................................................... 1-26
1.31 User Keys (F1, F2, F3) ............................................................................................ 1-27
1.32 Function Keys .......................................................................................................... 1-27
1.33 Suppressing Second-trace Echoes.......................................................................... 1-29
1.34 Adjusting Brilliance of Screen Data.......................................................................... 1-29
1.35 Noise Rejector.......................................................................................................... 1-30
1.36 Time Alarm ............................................................................................................... 1-30
1.37 Enhanced Video....................................................................................................... 1-30
1.38 Degaussing Interval ................................................................................................. 1-31
1.39 Navigation Data........................................................................................................ 1-31
1.40 Video Contrast ......................................................................................................... 1-32
iii
1.41 Clutter Sweep........................................................................................................... 1-32
1.42 Outputting Target Position........................................................................................ 1-32
1.43 Background Color .................................................................................................... 1-33
1.44 Selecting Range Scales........................................................................................... 1-33
1.45 Selecting Bearing Scale Format .............................................................................. 1-33
1.46 A/D Converter Curve Setting.................................................................................... 1-34
1.47 Enlarging Close-in Targets....................................................................................... 1-34
1.48 Alarms ...................................................................................................................... 1-35
1.49 Peformance Monitor................................................................................................. 1-36
RADAR OBSERVATION
2.1 General ........................................................................................................................ 2-1
2.2 False Echoes ............................................................................................................... 2-2
2.3 SART (Search and Rescue Transponder) ................................................................... 2-3
2.4 RACON (Radar Beacon).............................................................................................. 2-5
MAINTENANCE, TROUBLESHOOTING
3.1 Periodic Maintenance Schedule .................................................................................. 3-1
3.2 Life Expectancy of Major Parts .................................................................................... 3-2
3.3 Fuse Replacement....................................................................................................... 3-3
3.4 Replacement of Batteries............................................................................................. 3-3
3.5 Simple Troubleshooting ............................................................................................... 3-3
3.6 Advanced-level Troubleshooting .................................................................................. 3-4
3.7 Diagnostic Test............................................................................................................. 3-7
PARTS LOCATION ..........................................................................4-1
SPECIFICATIONS.........................................................................SP-1
INDEX
Declaration of Conformity (FR-1760DS)
iv

INTRODUCTION

A Word to the Owner of This 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 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

FR-1760DS is 60kW, S-band radar , FR-1710 is 10kW, X-band radar and FR-1725 is 25kW , X-band radar.
Daylight-bright rasterscan 17-inch multi-color, high-resolution display
New microprocessing technology with high-speed high-density gate array and software
expertise
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
Reliable CPA and TCPA warning in any plotting mode, accurate target data
The Clutter Sweep feature suppresses sea and rain clutters within an operator-selected
area.
A Video Plotter (Chart Plotter) and Performance Monitor are also optionally available.
v
FR-1760DS

SYSTEM CONFIGURATION

ANTENNA UNIT
110/115/ 220 VAC, 1φ, 50/60 Hz
100 VAC, 1φ, 50/60 Hz
100/110/ 115 VAC, 1φ, 50/60 Hz
220 VAC, 1φ, 50/60 Hz
440 VAC, 1φ, 50/60 Hz
Rectifier
RU-3305
Rectifier
RU-1758
Rectifier
RU-1803
Serial Data
(I/O)
GPS, etc.
Speed Log
Pulse Input
Water temperature, water depth
Gyrocompass
External
Buzzer
OP03-21
For de-icer
POWER
SUPPLY
UNIT
PSU-002
DISPLAY UNIT
RDP-120
ATA Board
ARP-17
Gyro Converter
GC-8A
Video Plotter RP-17 Board
SN4A-RSB-0051-N SN4A-RSB-0051-I SN5A-RSB-0051-N SN5A-RSB-0051-I
Remote Display
FMD-8010/FMD-811
Option
Ship’s Mains 24/32 VDC
vi
Rectifier
RU-3424
100/110/115/220/230 VAC, 1φ, 50/60 Hz
FR-1710/1725
Serial Data
GPS, etc.
Speed Log
Water temperature, water depth
Gyrocompass
OP03-21
(I/O)
Pulse Input
External
Buzzer
ANTENNA UNIT
DISPLAY UNIT
RDP-120
ATA Board
ARP-17
Gyro Converter
GC-8A
Video Plotter RP-17 Board
FR-1710 XN12AF-RSB0074-062 (24 rpm)
XN20AF-RSB0074-062 (24 rpm) XN12AF-RSB0075-062 (42 rpm) XN20AF-RSB0075-062 (42 rpm)
FR-1725 XN20AF-RSB0074-063 (24 rpm)
XN24AF-RSB0074-063 (24 rpm) XN20AF-RSB0075-063 (42 rpm) XN24AF-RSB0075-063 (42 rpm)
Remote Display
FMD-8010/FMD-811
Option
Rectifier
RU-3424
Ship’s Mains 24/32 VDC or 100/110/115/220/230 VAC, 1φ, 50/60 Hz
*
*: FR-1725 only
Note: The display unit is available
in AC or DC specification.
vii
MENU key
TGT TRAIL
MENU
1. VIDEO PLOT*
2. TGT TRAIL
3. TGT ALARM
4. PANEL DIM
5. ECHO SIG
6. FUNC
7. PLOT 1
8. MARK 2
9. BRILL 3
0. OTHER 4 * Requires Video Plotter
RP-17.

MENU TREE

1. TIME 15S 30S 1M 3M 6M 15M 30M CONT
2. MODE REL TRUE
3. SHADE MONO MULTI
4. LEVEL 1 2 3
5. TRAIL COPY OFF ON
6. THIN TRAIL OFF ON
7. THIN MODE 1 2 3 4
TGT ALARM
1. AREA NO1 NO2
2. MODE1 IN OUT
3. MODE2 IN OUT
DIMMER
1. PANEL BRIGHT 7 6 5 4 3 2 DIM
: Default settings
ECHO SIG
1. TGT COLOR YEL GRN COLOR*
2. ECHO AVG OFF 0.5 1 2 3
3. INT REJ OFF 1 2 3
4. N REJ OFF ON
5. ENHANCE OFF ON
6. 2ND ECHO OFF ON
7. CONTRAST 1 2 3
8. CLTR SWEEP
9. SWEEP LVL 1 2 3
0. CNTR ENHANCE OFF ON
FUNC
1. FUNC1 5
2. FUNC2
3. F1 6
4. F2
5. F3
6. A/D CURVE A B C D
* COLOR not shown on HK type radar.
OFF ON(LINK) ON(FIX)
viii
PLOT MENU 1
1. MARK DISP OFF ON
2. ERASE
3. VEC REF REL TRUE
4. VEC TIME 30S 1M 3M 6M 15M 30M
5. CPA SET OFF 0.5NM 1NM 1.5NM 2NM 3NM 4NM 5NM 6NM
6. TCPA SET 30S 1M 2M 3M 4M 5M 6M 12M 15M
7. TRACK OFF ON
8. AUDIO ALARM OFF ON
9. INTVAL* 30S 1M 2M 3M 6M
0. *
[0]
* Requires Automatic Tracking Aid ARP-17 (Option).
PLOT MENU 2*
1.
2. AUTO OFF ON SET
3. GUARD ZONE OFF ON SET
4. TRACK TEST
5. LAND DISCRIM 0 1 2 3 4 5
6. TTM OFF REL TRUE
7. VEC START 1MIN 20SCAN
8. REF TGT VECTOR OFF ON
9. TARGET BASED SPEED
MARK
1. ERASE
2. MODE REL TRUE
BRILL
1. TGT TRAIL
2. CHARACTER
3. HDG LINE
4. EBL/VRM
5. CURSOR
6. MARK
7. PLOT
8. OS SYMB
*
9.
PLOTTER BRILL*
1.
2. LAND
3. GRID
4. MARK
5. OS TRACK
6. TGT TRACK
7. COLOR
* Requires Video Plotter RP-17 (option).
ix
OTHER
1. HDG SET
2. SPD MODE MAN LOG NAV
LOG (S-BT)
LOG (S-WT)
3. MAN SPD
4. DRIFT SET
5. DISPLAY
6. MARK/LINE
7. TUNE
8. NAV DATA
9. EBL/VRM
0. 7
EBL/VRM
1.
2. CURS BRG REL TRUE
3. EBL1 REL TRUE
4. EBL2 REL TRUE
5. CURS RNG NM KM SM
6. VRM1 NM KM SM
7. VRM2 NM KM SM
DISPLAY
DRIFT SET
1.
2. SET&DRIFT OFF ON
3. SET
4. DRIFT
1.
2. NAV DATA OFF ON
3. DISPLAY MAIN SUB
4. SART OFF ON
5. P M OFF ON
MARK/LINE
1.
2. INDEX LINES 2 6
3. STERN MARK OFF ON
4. SHIP’S MARK OFF ON
5.
BEARING SCALE
1.
2. MODE AUTO MAN
3. TUNE SET
360 COMPASS
TUNE
NAV DATA
1.
2. NAV SEL ANY GPS LC
3. EXT WP OFF ON
4. OS POSN OFF L/L TD
5. DEPTH M FA
6. TEMP °C °F
7. TIME DIF UTC LOCAL
8. LOCAL TIME
ft
x
5
FUNC 1 MENU
1.
2. FUNC SEL COAST OCEAN R-SEA RAIN BIRD-N BIRD-F
3. ECHO AVG OFF 0.5 1 2 3
4. INT REJ OFF 1 2 3
5. STRETCH OFF 1 2
6. N REJ OFF ON
7. ENHANCE OFF ON
8. CONTRAST OFF 1 2 3
9. A/C AUTO OFF ON
[F2 MENU]
1. TRAIL TIME 26. HUTB MODE
2. TRAIL MODE 27. TUNE A/M
3. TRAIL SHADE 28. EXT WP
4. TRAIL LEVEL 29. OS POSN
5. ALARM AREA 30. CURS BRG
6. ALARM MODE 31. EBL1 T/R
7. PANEL DIMMER 32. EBL2 T/R
8. TGT COLOR 33. CURS RNG
9. ECHO AVG 34. VRM1 RNG
10. INT REJ 35. VRM2 RNG
11. ECHO STRETCH 36. CLTR SWEEP
12. NOISE REJ 37. MARK MENU
13. ECHO ENHANCE 38. DISP MODE
14. 2ND ECHO 39. A/D CURVE
15. CONTRAST 40. DRIGIN MARK
16. PLOT MENU 41. DEST ON CSR
17. MARK MODE
18. BRILL MENU
19. DRIFT MENU
20. NAV DATA
21. DISPLAY
22. SART
23. TIME ALARM
24. STERN MARK
25. OS MARK Select by VRM knob
and hit ENTER key.
37 and 38 shown with connection of RP-17.
xi
7
OTHER
1.
2. TEST
3. DEGAUSS
4. TIME ALARM
5. RANGE
6. INSTALL*
*: See Installation Manual.
DEGAUSS
1.
2. DEGS INTV OFF 30S 1M 2M
3. DEGS DEG OFF 45° 90° 135°
TIME ALARM
1.
2. ALARM INTV OFF 3M 6M 12M 15M 20M
RANGE
1.
2. RANGE 1/8 1/4 1/2
3/4 1 1.5 2 3 4 6 8 12 16 24 32 48 72 96 120
FR-1760DS Max. range: 120 NM FR-1710 Max. range: 72 NM FR-1725 Max. range: 96 NM
xii

OPERATIONAL OVERVIEW

1.1 Turning on the Power

The [POWER] switch is located at the top 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.
POWER switch

1.2 T ransmitter ON

After the power has been turned on and the magnetron has warmed, STBY (Standby) 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 when the radar is in standby.
Video Lockup Recovery
Video freeze-up or lock-up, can occur unex­pectedly on digital rasterscan radars. This is mainly caused by heavy spike noise in the power line and can be noticed by carefully watching the nearly invisible 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 picture, do Quick Start to restore normal operation.
Figure 1-1 Location of power switch
DANGER
Before turning on the radar, make sure that there is no one near the antenna.
Serious injury or even death may result if a rotating antenna strikes someone standing nearby.
1. Turn off the POWER switch and turn it on again within 10 seconds.
2. Push the Transmit switch labeled STBY/TX for Transmit status.
1-1

1.3 Control Description

Selects presentation mode.
1
MODE
Offset EBL origin to measure range,
Turns power on/off.
Chart card slot (Requires video plotter.)
ROTATE: Rotates EBL. PUSH: Degausses screen.
Alternately selects No.1 EBL, No.2 EBL.
Erases EBL.
Turns on/off target trails.
Enables/disables guard zone.
Off centers picture.
Turns zoom function on/off.
Turns parallel index lines on/off.
bearing between two targets;
predict collision course.
TRACKBALL Shifts cursor.
ROT A TE: Adjusts screen brilliance. PUSH: Selects back­ground color.
DEGAUSS (PUSH)
EBL
ON
OFF
BKGND COLOR (PUSH)
BRILL
F1
F2 F3
ROTATE: Suppresses sea clutter. PUSH: Turns on/off automatic clutter suppression.
TLL (PUSH)
A/C RAIN
A/C AUTO (PUSH)
Activates desired function.
ROTATE: Suppresses precipitation clutter. PUSH: Outputs target position.
2
3
4
5
6
7
8
9
0
HL OFF (PUSH)
A/C SEA
GAIN
RANGE
Selects range scale.
Turns on/off menu-selected function.
TGT
TRAIL
GZ
ALARM
SHIFT
ZOOM
INDEX
LINE
EBL
OFFSET
MARK
RINGS
Inscribes mark.
Adjusts brilliance of fixed range rings.
PREV
MENU
MENU
CANCEL
CLEAR
ENTER
SELECT
Displays previous menu.
Opens/closes menu.
Menu open: Cancels item selected. Menu closed: Erases mark.
Menu open: Registers selection. Menu closed: Displays data of selected plot symbol.
ROT A TE: Adjusts gain. PUSH: Temporarily erases heading line, markers (stern, north) OS symbol.
Selects pulse­length, echo stretch.
Adjusts radius of VRM.
10-1
2
-2 3
-3
ECHO
STBY
TX
VRM
ON
OFF
ACQ
Manually acquires target (plotting
AUDIO
OFF
function).
Silences timer, ATA and EPA alarms.
Alternately selects
Erases VRM.
No.1 VRM, No.2 VRM.
Transmit/standby switch
1-2
Figure 1-2 Control description

1.4 CRT Brilliance

1.6 Tuning the Receiver

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

1. Press the [MENU] key.
MENU
1. VIDEO PLOT
2. TGT TRAIL
3. TGT ALARM
4. PANEL DIM
5. ECHO SIG
6. FUNC
7. PLOT
8. MARK
9. BRILL
0. OTHER
Figure 1-3 Main menu
2. Press the [4] key twice. The following dis­play appears.
DIMMER
1. PANEL BRIGHT 7 6 5 4 3 2 DIM
Figure 1-4 Screen for adjustment
of panel dimmer
3. Press the [1] key to select backlighting level desired.
4. Press the [ENTER/SELECT] key to reg­ister your selection and the [MENU] key to close the menu.
The radar is set for automatic tuning at the factory.
Automatic tuning
The radar receiver is tuned automatically each time the transmitter is turned on. The tuning indicator and the label AUTO at the top right corner of the display unit shows 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 retune, press the [STBY/TX] key twice.
Manual tuning
1. Set up for manual tuning following the procedure shown below.
2. While observing the picture on the 48 mile scale, press and hold down the GAIN control while slowly adjusting the VRM ro­tary control to find 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.
Selection of manual or automatic tuning
1. Press the [MENU] key.
2. Press the [0] key twice to display the OTHER menu.
OTHER
1. HDG SET
2. SPD MODE MAN LOG NAV LOG (S-BT)
LOG (S-WT)
3. MAN SPD
4. DRIFT SET
5. DISPLAY
6. MARK/LINE
7. TUNE
8. NAV DATA
9. EBL/VRM
0.
Figure 1-5 OTHER menu
1-3
3. Press the [7] key twice to display the TUNE menu.
TUNE
1.
2. MODE AUTO MAN
3. TUNE SET
Figure 1-6 TUNE menu
4. Press the [2] key to select the option AUTO or MAN from the MODE field.
5. Press the [ENTER/SELECT] key.

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.
6. Press the [MENU] key to close the menu.

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 (DEGAUSS control).
1. Press the [MENU] key to display the main menu.
2. Press the [0] key twice to display the OTHER menu.
OTHER
1. HDG SET
2. SPD MODE MAN LOG NAV LOG (S-BT)
LOG (S-WT)
3. MAN SPD
4. DRIFT SET
5. DISPLAY
6. MARK/LINE
7. TUNE
8. NAV DATA
9. EBL/VRM
0.
Figure 1-7 OTHER menu
1-4
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.

1.9 On-screen Legends and Markers

Heading (Requires heading sensor.)
Range ring interval
Range to cursor
Range to cursor
Bearing to cursor
Presentation mode
Pulselength
Offcenter
Function
Target alarm zone No. 1
No. 1 EBL
No. 2 EBL
Range rings
Interference rejector
Echo stretch
Noise rejector
Auto clutter reduction
Echo averaging
Video contrast
No. 1 EBL bearing
Heading line
8
/2 NM
4.111NM
103.7°R HU PULSE MIP OFF CENT FUNC1 COAST
320
310
300
290
2 8 0
2 7 0
2 6 0
2 5 0
240
230
220
IR2 ES1 NR A/C AUTO EAV1 VIDEO CONTRAST1 EBL
345.6° R
23.0° R
No. 2 EBL bearing
2nd trace echo rejector
2nd Echo
340
340
330
330
320
210
200
OS
(L/L)
135°
RNG
WP
BRG
TTG 00:20
9/22
12:34
Date, time
Range, bearing to waypoint
Own ship position
HDG 234.5°
LOG 12.8 KT
350
350
190
40.36’N
34°
18.23’E
123.9NM 220°R
UTC
Log speed (Requires log device.)
AUTO
GAIN
A/C SEA
A/C RAIN
BRILL
000
000
010
010
020
020
030
030
040
040
140
150
160
170
180
40°21.211’N
127°21.321’E
TTG 00 : 50
TEMP 20.1°C DEPTH 123.5M
Water temperature, water depth
T-ALM
02:30
REL TRAIL
30S 0 : 16
2.093 NM
4.465 NM
Timer alarm countdown
Cursor position, time-to-go
050
050
060
060
120
130
GZ1
GZ2
OUT IN
VRM
0 7 0
110
0 7 0
0 8 0
0 9 0
1 0 0
Tuning bar
GAIN setting A/C SEA setting
A/C RAIN setting
BRILL setting
Cursor
Waypoint marker
Target alarm zone No. 2
No.1 VRM
No.2 VRM
North marker
Guard zone (active one is circumscribed) Guard zone mode
Target trail reference Target trail time, elapsed time
No. 1 VRM range No. 2 VRM range
Figure 1-8 On-screen legends and markers
Note: The cursor functions to measure the range and bearing to a radar target, and is perma­nently displayed. It can be returned to the screen center by pressing the VRM rotary control.
1-5

1.10 Presentation Modes

This radar has the following presentation modes: Head-up, Head-up/TB, Course-up, North-up, and True Motion.
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 Compass Signal
When the compass signal is lost, the buzzer sounds once, the presentation mode becomes head-up and the compass readout shows xxx.x°. After restoring the compass signal, press the [MODE] key to display the compass readout. Readjust the compass readout as shown on page 1-4. Also HDG SIGNAL MISSING appears at the bottom of the screen.
Presentation mode, representative display
Heading
marker North marker
300
290
280
270
260
250
240
North marker
310
300
290
280
270
320
310
230
220
340
330
320
260
250
210
330
240
350
200
340
000
230
350
190
010
220
The bearing scale rotates with a compass signal.
Heading line
000
010
170
180
Heading marker
030
020
200
210
020
160
190
040
030
150
050
180
040
050
130
140
Heading line
060
070
160
170
120
060
150
080
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.
070
080
090
100
110
The target pips are painted at their measured dis­tances and in their directions relative to own ship’s heading.
A short line 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 HDG readout to show asterisks xxx.x°.
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
090
100
110
120
130
140
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 compass.
If the compass fails, the bearing scale returns to the state of head-up mode.
1-6
Presentation mode, representative display
Description
North marker
330
320
310
300
290
280
270
260
300
290
280
270
260
250
240
310
230
250
340
320
220
240
350
210
330
000
230
010
220
340
200
Heading marker
030
020
200
210
North
000
350
190
180
190
010
170
040
180
020
160
Heading line
050
060
070
160
170
Heading line
030
040
050
130
140
150
080
090
100
110
120
130
140
150
Heading marker
060
070
080
090
100
110
120
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 top of screen while the heading line moves in accordance with ship’s yawing and course changes. 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 perpendicular.
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 being maintained up of the screen. The heading line changes its direction according to the ship’s heading.
If the compass fails, the presentation mode changes to head-up and the north marker disappears. Also, the HDG readout shows xxx.x°.
1-7
Presentation mode, representative display
Description
270
280
260
290
250
300
240
310
230
North marker
330
320
220
210
340
200
350
190
000
180
010
170
020
160
Heading line
030
040
140
150
050
060
120
130
Heading marker
070
080
090
100
110
True Motion Mode
Own ship and other moving objects move in accord­ance with their true courses and speeds. In ground stablized TM, all fixed targets, such as landmasses, appear as stationary echoes. In the sea stablized TM without set and drift input, the landmass can move on the screen.
When own ship reaches a point corresponding to 75% of the radius of the display, the own ship is automatically reset to a point of 75% radius opposite to the extension of the heading line passing through the display center. Resetting can be made at any moment before the ship reaches the limit by pressing the [SHIFT] key. Automatic resetting is preceded by a beep sound.
If the compass fails, the presentation mode is changed to the head-up mode and the north marker disappears. The HDG readout at the top of the screen shows xxx.x°.
North
Heading line
300
290
280
270
260
250
240
350
340
330
320
310
230
220
210
200
(a) True motion is selected
000 010
marker
020
030
040
050
060
070
080
090
100
110
120
130
140
150
160
170180190
300
290
280
270
260
250
240
340
330
320
310
230
220
210
200
(b) Own ship has reached a point 75% of display radius
Automatic resetting of own ship position in true motion mode

1.11 Selecting the Range Scale

The range selected automatically determines
the range ring interval, the number of range rings and pulse repetition rate, for optimal detection capability in short to long ranges. You can select pulselength with the ECHO control. For details, see para­graph 1.13.
000 010
350
020
030
040
050
060
070
080
090
100
110
120
130
140
150
160
170180190
320
310
300
290
280
270
260
250
240
230
220
000 010
350
340
330
210
200
020
030
040
050
060
070
080
090
100
110
120
130
140
150
160
170180190
(c) Own ship is automatically reset to 75% of radius
Press the [RANGE] key to select a range scale. The range, range ring interval and pulselength appear at the top left corner of the display.
1-8
1.12 Entering Own Ship’s Speed
4. Press the [ENTER/SELECT] key to con­firm your selection followed by the [MENU] key to close the menu.
EPA requires an own ship speed input and compass signal. The speed can be entered from a speed log or navaid (automatic) or through the plotting keypad (manual).
Automatic speed input
1. Press the [MENU] key and the [0] key twice to show the OTHER menu.
OTHER
1. HDG SET
2. SPD MODE MAN LOG NAV LOG (S-BT)
LOG (S-WT)
3. MAN SPD
4. DRIFT SET
5. DISPLAY
6. MARK/LINE
7. TUNE
8. NAV DATA
9. EBL/VRM
0.
Figure 1-9 OTHER menu
2. Press the [2] key to select the menu item SPD MODE.
3. Press the [2] key again to select the LOG or NAV.
LOG: Pulse input from speed
log, serial data
NAV: Speed data from naviga-
tion equipment
Note: Be sure not to select a LOG option or NAV when respective equipment is not con­nected. If the log signal or navaid signal is not provided, the ship’s speed readout at the screen top will be blank.
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 OTHER menu.
2. Press the [2] key to select MAN from the SPD MODE field, and then press the [EN­TER/SELECT] key.
3. Press the [3] key twice to select the MAN SPD field.
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.
LOG 10.0KT WT
Or NAV
LOG or NAV speed indication
LOG 8.7KT WT
8.5 F Fore/Aft
0.5 SB Port/STBD
GT
About Ship’s Speed
c’
a
Wind,
current
LOG (serial data) speed indication
a: Fore/aft speed b: Port/starboard speed c: Speed made good (actual speed)
c
Pulse signal: a only (water tracking speed) Serial speed: a and b
b
Water tracking speed = relative speed (including error due to wind, current Ground tracking speed = true speed (no influence from wind, currents) Navigator speed: cc’ Speed input (c) from navgator (GPS, etc.) c is converted to fore/aft direction (c’) and displayed on the radar screen.
1-9

1.13 Pulselength, Echo Stretch

The ECHO control selects pulselength, and echo stretch when it is not turned on with a user key ([F1], [F2], [F3]). The pulselength in use is displayed at the upper-left position of the screen using the abbreviations (suffixed with “P”) shown in the table on the next page. Echo stretch level (ES1, ES2) in use appears at the bottom left position, using the indica­tion ES1 or ES2.
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 control. The ECHO control settings which can select the echo stretch are shown in the table below. The legend and pulselengths are shown in below.
5271/0171-RFSD0671-RF sµ70.0:P1Ssµ80.0:PS sµ51.0:P2Ssµ3.0:P1M
sµ3.0:P1Msµ6.0:P2M sµ5.0:P2Msµ2.1:PL sµ7.0:P3M
sµ2.1:PL
Note: 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.
Enlarged in bearing (circumferential) direction with ES1
+
If a distant target is hard to see, use ES 1.
Enlarged with ES2
+
If a target becomes smaller as it approaches own ship, use ES 2.
Figure 1-10 Echo stretch
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.
1-10
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