Furuno FR1500 Mk3 User Manual

15" MULTI-COLOR HIGH-PERFORMANCE

SHIPBORNE RADAR AND ARPA

FR-1500 MARK-3 SERIES

9-52 Ashihara-cho,9-52 Ashihara-cho,

*00080840400**00080840400*

*OME34500T00**OME34500T00*

Nishinomiya, JapanNishinomiya, Japan

Telephone :Telephone : 0798-65-21110798-65-2111 Telefax :Telefax : 0798-65-42000798-65-4200

Your Local Agent/DealerYour Local Agent/Dealer

ll rights reserved.

PUB.No.PUB.No. OME-34500OME-34500

(( TATATATA ))

FR-1500 MARK-3 SER.FR-1500 MARK-3 SER.

Printed in JapanPrinted in Japan

FIRST EDITION :FIRST EDITION : OCT.OCT. 19981998

T :T : JAN.JAN. 10,200210,2002

* 0 0 0 8 0 8 4 0 4 0 0 ** 0 0 0 8 0 8 4 0 4 0 0 *

*OME34500T00**OME34500T00*

* O M E 3 4 5 0 0 T 0 0 ** O M E 3 4 5 0 0 T 0 0 *

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 Software (Prog No.) Date

FR-1500 MARK-3 0359152109 March 00

FR-1500 MARK-3 0359152110 Dec 01

ATA 1859041102 June 99

ATA 1859042101 June 99

RP-17 0359155103 March 00

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.

INTRODUCTION ..........................................................................................................................................v

Specifications of FR-1500 Mark-3 Series shipborne radar.....................................................................viii

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) ..................................................................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 board 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

iii

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 Hiearchy .....................................................................................................................................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

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)

- IEC 60945: 1996-11(3

Ed) Marine Navigational Equipment General Requirements

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 X-band 12 kW

FR-1525 MARK-3 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

Target Alarm zones

ATA: One Guard Zone:

x2 Zoom Not available Available on menu

Echo colors Monochrome yellow or green in 16

Speed mode Manual, Log Manual, Log, and NAV (GPS, DGPS)

Target trail intensity

Close-in range enhancement

A/D curve Not available A, B, C, D

Radar:

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.

Default GZ covers 3.5-4 nm, adjustable between 3 and 6 nm, in 0.5 nm range depth.

tones

Not available 1, 2, 3, 4

Not available CENter ENHANCE on menu

0.125, 0.25, 0.5, 0.75, 1.5, 3, 6, 12, 24, 48, 72, 96 nm (sm, km on menu)

Radar: Target Alarm Zone:

and 2nd TAZs anywhere. Alarm can be selected for inside (as TAZ) or outside (as off-zone Anchor Watch).

ATA: One Guard Zone:

Anywhere

Choice of monochrome in 16 tones or 3 colors depending on echo strengths

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.

vii

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 P/L (µs) PRF (Hz)

0.125, 0.25 0.07 3000

0.5 0.07/0.15 3000

0.75, 1.5 2 from 0.07/0.15/0.3 3000/1500 3 6, 12 2 from 0.3/0.5/0.7/1.2 1500/1000 24 2 from 0.5/0.7/1.2 1000/600 48, 96 1.2 600

4. IF: 60 MHz, Logarithmic.

5. Noise figure: 6 dB

6. Duplexer: Ferrite circulator with diode limiter

2 from 0.07.15/0.3/0.5/0.7

BW 28/3 MHz

3000/1500

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

8. Plotting facilities:

EPA: 10 targets manual plot, automatic

follow-up. W arning 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: RSD, TTM, etc.

2. Gyrocompass: Built-in interface (option) for sync signal (20-135 V, 50-400 Hz), or stepper signal (20-135 VDC), any polarity

3. Speed log: IEC 61162-1, contact closure or 200/400/500 pulses/nm

POWER SUPPLY

DC power

FR-1505 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)

FR-1510 MARK-3: 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)

FR-1525 MARK-3: 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

FR-1505 MARK-3: : (24/42 rpm): 2.7/2.9 (3.5/3.9) A at

FR-1515 MARK-3: : (24/42 rpm):3.1/3.3 (3.9/4.4) A at

FR-1525 MARK-3: : (24/42 rpm):3.4/3.6 (4.2/4.7) A at

( ): at wind speed 100 kt

(100/110/115 or 220/230 VAC, 1φ, 50-60 Hz)

100 V

viii

ENVIRONMENTAL CONDITIONS

1. Ambient temperature (Complies with IEC 60945)

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)

Electromagnetic radiofrequency radiation

COATING COLOR

Display Unit: Panel: N3.0 (Dark grey)

Cover: 2.5GY5/1.5 (Light grey)

Antenna Unit: N9.5 (White)

Option

.1 Power cable CVV-S8x2C 15 m (for DC set)

Stepdown transformer RU-1803 (440 V, 1ø)

.2 .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 (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)

MODEL RADIATOR TYPE Distance to 100 W/cm

FR-1505 M3 (X, 6 kW) XN12AF (4’) none 2.1 m 75 W/cm2 XN20AF (6.5’) FR-1510 M3 (X, 12 kW) XN12AF (4’) 1.1 m worst case 10.0 m worst case 200 W/cm2 worst case XN20AF (6.5’) FR-1525 M3 (X, 25 kW) XN20AF (6.5’) 1.1 m worst case 10.0 m worst case 200 W/cm2 worst case

Distance to 10 W/cm2

RF power density on antenna aperture

Category of Equipment Units

Equipment for Protected Area Equipment for Exposed Area Display unit Power supply unit

Antenna unit (Scanner unit, RF Transceiver unit) Performance monitor

Interswitch unit

Compass safe distance

Equipment unit Standard compass Steering compass Remarks Display unit RDP-119 0.80 (0.50) m 0.50 (0.30) m Antenna unit RTR-067 (6 kW) 1.40 (0.85) m 0.70 (0.45) m For all radiators Antenna unit RTR-062 (12 kW) 1.70 (1.05) m 0.90 (0.55) m For all radiators

Antenna unit RTR-063 (25 kW) 2.10 (1.30) m 1.20 (0.75) m 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.

CONFIGURATION OF FR-1500 MARK-3 SERIES RADARS

FR-1505 MARK-3 FR-1510 MARK-3

RW-4873 (25C + 3C2V)

FR-1525 MARK-3

ANTENNA UNIT

DISPLAY UNIT

RDP-119

RADIATOR

XN-12AF (120 cm, 4 ft) XN-20AF (200 cm, 6.5 ft) XN-24AF (240 cm, 8 ft)

SCANNER UNIT

RSB-0074 (24 rpm) RSB-0075 (42 rpm)

TRANSCEIVER module

The antenna unit contains the RF transceiver in its scanner housing.

RTR-067 (6 kW) RTR-062 (12 kW) RTR-063 (25 kW)

Performance Monitor (option)

PM-30 for X-band

ATA BOARD

ARP-17, ARP-10

Gyro Interface

GC-8A

PM INTERFACE

VIDEO PLOTTER

RP-17

CO-SPEVV-SB-C

250V-MPYCY-5

250V-DPYCY-1.25

CO-SPEVV-SB-C

2C 1.5 m

Gyro

Converter

Gyro

Speed Log

EPFS

External Buzzer

115/230 VAC,

1ø, 50/60 Hz

RECTIFIER

RU-1746B-2

24 VDC

RU-3424

RU-3424 is for 42 rpm 25 kW antenna unit

115/230 VAC, 1ø, 50/60 Hz

12/24-32 VDC

RW-4869

Other Radar system

Please specify power supply when ordering. Optional transformer is required for other mains.

DISPLAY UNIT available for AC or DC mains. 12 VDC unit works with 6 or 12 kW, 24 rpm antenna unit only.

Optional Supply

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

POWER switch

not operate when this switch is turned off. Keep it in the ON position.

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

OFF

DEGAUSS (PUSH)

EBL

OFF

HL OFF (PUSH)

A/C AUTO (PUSH)

TLL (PUSH)

DAY/NIGHT (PUSH)

AUDIO

FUNCT

STBY

DIRECT ACCESS CONTROL PANEL

1234567890Function keys are also used as

(RM), Head-up True Bearing (RM), Course-up

Press to select presentation mode - Head-up

(RM), North-up (RM), North-up (TM). Ref.

Off-centers the radar picture, turns on/off

Zoom (R-type) or manual-resets the TM

Inscribes reference marks (Ref. 1.28) or

Primary menu containing: Video Plot, Target

Trail, Target Alarm, Watch Time, Echo Sig,

Concludes entry of data, displays target data.

Select FUNC 1, 2 or 3 which is a

setting of picture effecting parameters.

Ref. 1.34.

MODE

MENU ACCESS CONTROL PANEL

TGT

TRAIL

TGT

ALARM

SHIFT ZOOM

Target trails over selected time. Ref. 1.26.

Sets two target alarm zones. Ref. 1.22.

display. Ref. 1.23.

INDEX

numeral keypads for 0-9.

LINE EBL

OFFSET

PLOT

SYMBOL

MARK

Controls Parallel Index Lines. Ref. 1.27.

Offset 1st EBL together with Cursor. Ref. 1.20.

Enters EPA mark. Ref. 1.25.

marks in Radar map (Ref. 1.47).

Selects functions of primary controls. Ref. 1.32.

Selects setting of one of parameters visible on STBY. Ref. 1.33.

POWER switch

CANCEL

CLEAR

ENTER

SELECT

BRILL A/C RAIN A/C SEA

BKGND

DIMMER

COLOR

OFF

RINGS

ION

Function, Plot, Mark, Brill, Others. Ref. 1.6, etc. Cancels entry, stops tracking.

GAIN

VRM

RANGE

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 Tuning the Receiver

1.6.1 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 twi c e .

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.

1. VID EO P LOT * Requires RP-17.

2. TGT TRAIL

3. TGT ALARM

4. WATCH TIME

5. ECHO SIG

6. FUNC

7. PLOT

8. MARK

9. BRILL

0. OTHERS

OTHERS

1. HDG SET

2. SPD MODE MAN LOG LOG (S-BT) LOG (S-WT)

3. MAN SPD

4. SET & DRIFT

5. DISPLAY

6. MARK/LINE

7. TUNE

8. NAV DATA

9. EBL/+/PI

0. ↓

TUNE

1. ↑

2. MODE AUTO MAN

(a) Main menu (b) OTHERS menu (c) TUNE menu

2. Press the [0] key twice to display the OTHERS menu. (b)

3. Press the [7] key to display the TUNE menu. (c)

4. Press the [2] key to select the option MAN from the MODE field.

5. Press the [E NTER/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 t o 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 t he 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.

OTHERS

1. HDG SET

2. SPD MODE MAN LOG

LOG (S-BT) LOG (S-WT)

3. MAN SPD

4. SET & DRIFT

5. DISPLAY

6. MARK/LINE

7. TUNE

8. NAV DATA

9. 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.

OTHERS

1. HDG SET

2. SPD MODE MAN LOG

LOG (S-BT) LOG (S-WT)

3. MAN SPD

4. SET & DRIFT

5. DISPLAY

6. MARK/LINE

7. TUNE

8. NAV DATA

9. EBL/+/PI

0. ↓

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

Heading line

Heading marker

2NM

PULSE 1 M1 H U RM FUNC1 COAST

IR1 ES1 NR EAV0.5 A/C AUTO CONTRAST1

2nd Echo SART MAP ALIGN

320

310

300

290

280

270

260

250

240

230

220

EBL

287.2

240.0

340

330

210

200

350

190

Target Alarm Zone (Radar) or Guard Zone (ATA), 1st zone between 3 and 6 nm, 2nd zone anywhere.

Own ship data

Parallel index lines

Parallel index line reference

000

010

170

180

020

160

AUTO

030

150

WATCH TIM 00:00

040

140

SET DRIFT REL TRAIL

12:34 30SEC

X-BAND

050

060

070

120

130

TA1 TA2 IN IN

VRM

10.75NM

7.00 NM

MAIN

HDG 155.0° T GYRO SPD 12.0KT WT LOG 00.00KT F

00.00KT SB

TTG 45:50

OWN SHIP (GPS)

CSE 150.0 T

WPT01

080

090

100

110

DEPTH 075.2m TEMP 18.0°C 30-SEPT-1998

(LOCAL) 00:00 MAN 00:01 1 TRUE VECT

3Min WT

RNG 4.7NM BRG 78.5°T CSE 264.0°T WT SPD 10.3K WT CPA 2.9NM TCPA 15:20

EPFS SIGNAL MISSING

TRIG. AZIMUTH

VIDEO GYRO LOG

GAIN A/C SEA A/C RAIN BRILL

305.6° R

9.02NM

38 29 .562°N

138 18.562°E

38 32 .222°N

138 11.212°E

77.0°T

0.123NM

TTG 00:00

Heading, Speed value and sensor type

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

Stern marker

North marker

Control settings

Parallel index line reference 50°R

VRM. NO. 1 and NO. 2

EBL. NO. 1 and NO. 2 Active EBL is circumferenced

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-

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 Selecting pulselength 1 or 2

1. Press the [MENU] key to display the Main menu.

2. Press the [5] key twice to select ECHO SIG.

3. Press the [6] key or [7] key to select PULSE 1 or PULSE 2 as appropriate.

4. Press the [ENTER/SELECT] key.

5. 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

Underlined is the default v alue on eac h range.

0.07

0.15 µs

0.07 0.15

0.3 0.5

0.5 µs 0.7

0.7 1.2 µs

0.3 µs

0.3 0.5 0.7 µs

1.2 µs

1.13.2 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 discrim i nati on in preference to detec tion, c hoose a s hor ter puls e. However shor t the r adar s atis fi es the detecting requirements of the IMO.

1. Press the [MENU] key.

2. Press the [5] key t wic e to display the ECHO S IG menu.

3. Press the [6] or [7] key as appropriate t o s elec t PULSE 1 or PULSE 2.

4. Press appropriate numeric key among 2- 7 to select pulselength and r ange.

5. Press the [ENTER/SELECT] key.

6. Press the [MENU] key.

-1.10-

1.14 Adjusting the Sensitivity

The auto A/C function can erase weak target echoes. Adjust the control carefully watching

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 A/C SEA adjusted

1.15.2 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 display.

-1.11-

1.16 Suppressing Precipitation Clutter

interference rejection depending on the number of transmissions that are

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

A/C RAIN OFF A/C RAIN ON – Thin clouds

anti-clutter effect.

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.

can be cleared

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

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. VECTOR T/R

2. PULSE

3. INT REJ

4. STRETCH

5. ECHO AVG

6. CONTRAST

7. N REJ

8. DISP SEL

9. PM

0. SART

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 betwe en 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 o f the target of i nterest and read its dist anc e ( u ni t: nm) at th e lower-right corner of the screen. Each VRM r em ains at the same geographical dist ance when you oper ate the [RAN GE+] 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.

No.1 VRM

Active VRM is identified with this marker.

Target blip

No.2 VRM

VRM

0.66SM

1.18SM

-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

EBL

150.3°R

290

280

270 260

250

EBL 1

300

240

310

230

320

220

330

210

340

350

020

200

180

160

170190

030

150

VRM 1

040

050

130

140

3.85 NM

060

070

080

090

100

110

120

VRM

CURSOR

EBL

100.3°R

290

280

270 260

250

EBL 1

300

240

310

230

320

220

330

210

010

340

200

350

000

180

010

030

150

VRM 1

040

050

060

070

110

120

130

140

VRM

020

160

170190

3.85 NM

000

(a) Evaluating the target ship course in RM (b) Target ship on collision course

080

090

100

-1.15-

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

220

320

210

330

Target 2

340

200

350

190

000

180

010

170

020

160

030

150

040

140

050

060

070

110

120

130

VRM

0.505NM

0.205NM

080

090

100

Distance between

Distance between Targets 1 and 2

Targets 1 and 2

Origin of NO. 1 EBL

NO. 1 VRM

Target 1

90.5°R

335.2°R

270

280

260

290

250

240

EBL

300

230

310

R: Bearing relative os heading viewed from Target 1 to 2

R: Bearing relative os heading viewed from Target 1 to 2 T: Bearing relative to north viewed from Target 1 to 2

T: Bearing relative to north viewed from Target 1 to 2

-1.16-

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

1. AREA NO. NO 1 NO 2

2. MODE 1 IN OUT

3. MODE 2 IN OUT

In R-type, you can use NO. 1 as TAZ by selecting IN and NO. 2 as an Anchor Watch by selecting OUT. In IMO type, only IN is available.

2. Press the [1] key to select guard zone to use NO 1 or NO 2.

3. Press the [ENTER/SELECT] key.

4. Press the [MENU] key.

5. 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.

000

280

270

260

290

250

300

240

310

230

320

220

330

210

010

350

340

200

180

020

160

170190

030

150

040

140

050

130

TAZ

060

120

070

110

080

090

100

Target alarm zone (TAZ) can be set in any sector between 3 and 6 nm on IMO-type, and anywhere on the R-type.

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.

-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-

+ 90 hidden pages

Furuno FR1500 Mk3 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

SAFETY INSTRUCTIONS

TABLE OF CONTENTS

INTRODUCTION

1 OPERATIONAL OVERVIEW

1.1 Turning on the Power

1.2 Transmitter ON

1.3 Control Description

1.4 CRT Brilliance

1.5 Control Panel Backlighting

1.6 Tuning the Receiver

1.7 Degaussing the Screen

1.8 Initializing the Compass Readout

1.10 On-screen Legends and Markers

1.11 Presentation Modes

1.12 Selecting the Range Scale

1.13 Selecting the Pulselength

1.14 Adjusting the Sensitivity

1.15 Suppressing Sea Clutter

1.16 Suppressing Precipitation Clutter

1.17 Interference Rejector

1.18 Measuring the Range

1.19 Measuring Bearing

1.21 Measuring Range and Bearing Between Two Targets

1.22 Setting a Target Alarm Zone

1.23 Off-centering (shift)