Back MARINE RADAR MODEL FR-7062/7112/7252
The paper used in this manual is elemental chlorine free. FURUNO Authorized Distributor/Dealer 9-52 Ashihara-cho, Nishinomiya 662-8580, JAPAN Telephone : 0798-65-2111 Fax 0798-65-4200 : All rights reserved. Printed in Japan FIRST EDITION : APR. 1998 H1 Pub. No. OME-34590 ( YOSH ) FR-7062/7112/7252 : JAN.
SAFETY INSTRUCTIONS DANGER Stay away from transmitting antenna. The radar antenna emits microwave radiation which can be harmful to the human body, particularly the eyes. Never look directly into the antenna radiator from a distance of less than 1 m when the radar is in operation. Radio Frequency Radiation Hazard The radar antenna emits electromagnetic radio frequency (RF) energy which can be harmful, particularly to your eyes.
DANGER WARNING Before turning on the radar make sure no one is near the scanner unit. Prevent the potential risk of someone begin struck by the rotating antenna and exposure to RF radiation hazard. Use the proper fuse. Fuse rating is shown in the chapter 5. Use of a wrong fuse can result in equipment damage Do not operate the equipment with wet hands. Electrical shock can result. WARNING Do not open the equipment. Improper handling can result in electrical shock.
COMPLIANCE WITH R&TTE DIRECTIVE 1999/5/EC This radar complies with the R&TTE Directive 1999/5/EC. In accordance with Article 6-3 of this directive, FURUNO intends to put this radar on the market of the following countries in EU as well other markets.
SART (Search and Rescue Transponder) A Search and Rescue Transponder (SART) may be triggered by any X-Band (3 cm) radar within a range of approximately 8 n.miles. Each radar pulse received causes it to transmit a response which is swept repetitively across the complete radar frequency band. When interrogated, it first sweeps rapidly (0.4 µsec) through the band before beginning a relatively slow sweep (7.5 µsec) through the band back to the starting frequency.
Summary to detect SART response 1. Use range scale of 6 or 12 nm as the spacing between the SART responses is about 0.6 nm (1125 m) to distinguish the SART. 2. Turn off the A/C AUTO function. 3. Turn off the Interference Rejector. General remarks on receiving SART Radar range scale When looking for a SART it is preferable to use either the 6 or 12 nautical mile range scale. This is because the total displayed length of the SART response of 12 (or 24) dots may extend approximately 9.
FOREWORD Congratulations on your choice of the FURUNO FR-7062/7112/7252 Marine Radar. We are confident you will see why the FURUNO name has become synonymous with quality and reliability. For over 40 years FURUNO Electric Company has enjoyed an enviable reputation for innovative and dependable marine electronics equipment. This dedication to excellence is furthered by our extensive global network of agents and dealers.
TABLE OF CONTENTS FOREWORD ...............................vi v MENU TREE .............................viii vii ix SYSTEM CONFIGURATION.... ..viii 1. PRINCIPLE OF OPERATION 1.1 What is Radar? .................................1-1 1.2 How Ships Determined Position Before Radar ...................................1-1 1.3 How Radar Determines Range ........1-1 1.4 How Radar Determines Bearing ......1-1 1.5 Radar Wave Speed and Antenna Rotation Speed ................................1-1 1.6 The Radar Display .....
MENU TREE MENU KEY RINGS (Off, 1, 2, 3, max) INDEX LINE (Off, On) DISP DATA (NAV, Auto plotter, NAV and Auto plotter) INT REJECT (Off, On) ARP-10 MENU OTHER MENU 1. Display 2. All Cancel 3. Vector Ref 4. Vector Length 5. History 6. CPA SET 7. TCPA SET 8. AUTO ACQ (With ARP-10 only.) 1. Panel Dimmer (1, 2, 3, 4) 2. Mark Brill (1, 2, 3, 4) 3. HD Mark (1, 2, 3, 4) 4. Characters (1, 2, 3, 4) 5. Trail Tone (Single, Multi) 6. Pulselength (Short, Long) 7. Noise Reject (Off, On) 8.
SYSTEM CONFIGURATION Scanner Unit FR-7062 XN12A-RSB-0070-059 XN13A-RSB-0070-059 XN12A-RSB-0073-059 FR-7112 XN12A-RSB-0072-060 XN13A-RSB-0072-060 XN12A-RSB-0073-060 FR-7252 XN12A-RSB-0072-061 XN13A-RSB-0072-061 XN12A-RSB-0073-061 Navigation device IEC 1162* (In/Out) Video Sounder Gyro compass IEC 1162* (In/Out) Gyro Converter AD-100 Radar Plotter RP-110 Display Unit FR-7062/7112: RDP-122 FR-7252: RDP-123 Slave Display FMD-811/8010 Auto Plotter ARP-10 # External Alarm Buzzer OP03-21 Integrated Head
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1. PRINCIPLE OF OPERATION 1.1 What is Radar? The term “RADAR” is an acronym meaning RAdio Detection And Ranging. Although the basic principles of radar were developed during World War II, echoes as an aid to navigation is not a new development. 1.2 How Ships Determined Position Before Radar Before the invention of radar, when running in fog near a rugged shoreline, ships would sound a short blast on their whistles, fire a shot, or strike a bell.
Heading marker Targets A D A B D B C C Own ship in center Own ship (radar) (A) Bird's eye view of situation (B) Radar picture of (A) Figure 1-1 How radar works 1-2 Range and bearing of a target, relative to own ship, are readable on the PPI.
2. BASIC OPERATION 2.1 Control Description Turns power on. Press together with [STBY/TX] key to turn power off. GAIN POWER Alternates between stand-by and transmit. NAV data and ARPA data can be displayed individually or together.* HM OFF(PUSH) OFF (Control) Adjusts sensitivity of radar receiver. (Switch) Temporarily erases heading marker (and north marker if displayed). A/C SEA STBY TX ECONOMY A/C AUTO(PUSH) A/C RAIN F1 ES(PUSH) Suppresses electrical noise.* (Control) Reduces sea clutter.
2.2 Display Indications and Markers Tuning status (P.3-8) Echo trail elapsed time (P.3-4) Heading (requires heading data) Heading marker (P.2-6) Tuning bar (P.3-8) Echo trail time (P.3-4) Guard Zone (P.3-4) Range (P.2-4) 0. 125NM Range ring interval (P.2-4) 0. 0625 SP HU RM Pulselength (P.2-4) Display mode (P.2-6) 2nd-trace echo suppressor (P.3-8) HDG 234.5° Zoom (P.2-9) or TRAIL 25 : 38 30min AUTO G (OUT) ZOOM ES1 Off center (P.2-9) Echo Stretch (P.2-6) 2ND ECHO EBL2 (P.
2.3 Turning the Radar On/Off 2.5 Stand-by Press the [POWER] key to turn the radar on. 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 stand-by by pressing the [STBY/TX] key. The display shows “STBY,” (default setting) navigation data, or goes into the economy mode. (You can select stand-by condition on the menu. More on menu operation later.) To turn the radar off, press the [POWER] key together with the [STBY/TX] key.
Note 1:Availability of a particular display item depends on incoming data. Note 2:When Range to Waypoint reaches 0.1 nm, the WPT mark jumps to dead ahead even though a difference may exist between heading and BRG to WPT. Note 3:When cross track error exceeds 1 nm on either side, the XTE mark starts blinking. 2.6 Selecting the Range 2.8 Adjusting Receiver Sensitivity The [GAIN] control adjusts the sensitivity of the receiver.
Adjusting the A/C SEA control The proper setting of the A/C SEA should be such that the clutter is broken up into small dots, and small targets become distinguishable. 2.10 Adjusting the A/C RAIN Control (reducing rain clutter) 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.
2.11 Selecting the Presentation Mode This radar provides four presentation modes: head-up, course-up, north-up and true motion. ally mask a target. To view the target, you can temporarily erase the heading marker and north marker by pressing and holding down the [GAIN (HM OFF)] control. Release the control to re-display the markers. Press the [MODE] key.
2.14 Measuring the Range Range You can measure the range to a target three ways: by the range rings, by the cursor, and by the VRM (Variable Range Marker). Range ring interval 6.0 NM 2.0 Target VRM1 Cursor Measuring range by range rings VRM2 Count the number of rings between the center of the display and the target. Check the range ring interval and judge the distance of the echo from the inner edge of the nearest ring. To turn the rings on or off, see the menu operation later (Chapter 3).
6.0 NM 2.0 5. Operate the trackball to pass EBL1 through the center of the target. Target Cursor EBL1 EBL2 EBL1 bearing EBL1 bearing EBL 40.0° R 135.0° R 40.0°R 4.0 NM To cancel the offset EBL, press the [EBL OFFSET] key. Cursor Bearing Figure 2-10 How to measure bearing by EBL and cursor Note: The bearing readout for the EBL and the cursor can be displayed in relative or true bearing (true bearing requires heading sensor input).
To cancel, press the [EBL OFFSET] key. EBL1 B VRM1 A 2.18 Zoom The zoom feature allows you to double the size of the area between your vessel and any location within the current range to take a closer look at an area of interest. 1. Select location with the cursor. 2. Press and hold down the [SHIFT/ZOOM] key about two seconds. ZOOM appears at the top right corner when the zoom function is on. EBL1 bearing 70.0° R VRM 4.
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3. ADVANCED OPERATION 3.1 Basic Menu Operation 3.2 Index Lines The menu mostly contains less-often used functions which once preset do not require regular adjustment. To open or close the menu, press the [MENU] key. You can select items on the menu with the trackball. The complete menu appears at begining of this manual. The index lines are useful for maintaining a constant distance between own ship and a coastline or partner ship. They are linked with EBL2 and VRM2. 1.
3.3 Suppressing Radar Interference Radar interference may occur when near another shipborne radar operating in the same frequency band as your radar. Its on-screen appearance is many bright dots either scattered at random or in the form of dotted lines extending from the center to the edge of the display. Figure 3-4 illustrates interference in the from of curved spokes.
To turn navigation data on or off 3.5 Displaying Navigation Data Navigation data can be displayed at the screen bottom if this radar receives navigation input in IEC 1162 format. Navigation data include; Press the [F1] key if its function is set for DISP DATA (default setting), or select DATA DISP on the menu. ¡ Position in latitude and longitude or LoranC time difference ¡ Range, bearing and time-to-go to both waypoint selected on the navigator and the cursor ¡ Speed.
3.6 Echo Trail You can show the movement of all radar targets relative to your vessel in afterglow. This function is useful for alerting you to possible collision situations. Starting echo trail Press the [ECHO TRAIL] key. Changing trail attributes Trail gradation and trail time can be selected on the OTHER MENU. Table 3-1 Trailing attributes Items in OTHERS menu TRAIL, the echo trail time selected (on “OTHER MENU”) and elapsed time appear at the top right-hand corner of the display.
Asterisk blinking Guard zone to set Dashed line: no alarm A D C B Drag cursor here. Guard zone IN ALARM * G (IN) A OUT ALARM Figure 3-8 In and Out alarm (1) Mentally create the guard zone to set. (2) Drag cursor to top left corner of zone and press [GUARD ALARM]. Setting a guard zone Preparation 1. Press the [MENU] key, and then select “OTHER MENU,” and press the [ACQ/ENTER] key. 2. Select “15.
Notes on the guard alarm Turning on watchman ¡ The alarm is a useful anti-collision aid, but does not relieve the operator of the responsibility to also keep a visual lookout for possible collision situations. 1. Create a guard zone (usually 360 degrees) with the guard alarm function. ¡ When the radar range is less than one half of the guard zone range, the guard zone disappears and “G (IN)” or “G (OUT)” appears in inverse video. If this happens, raise range to re-display the guard zone. 3.
3.9 OTHER MENU Description The table below summarizes the OTHER MENU. Table 3-2 OTHER MENU Description Item 1. Panel Dimmer Description Selects level of panel backlight. 2. Mark Brill 3. HD Mark Selects brilliance of VRM, EBL, cursor, guard zone and WP marks. Selects brilliance of heading marker. 4. Characters* Selects brilliance of characters. 5. Trail Tone Selects gradations of echo trails. 6. Pulselength Selects pulselength for 1.5 and 3 mile ranges. 7.
3.10 Function Keys The function keys (F1 and F2) work like the auto-dialing feature of a telephone, automatically executing the function assigned to them. The assigned function can be turned on/off by pressing appropriate function key again. Default settings F1: Display NAV/ARPA data F2: Noise rejector How to program function keys In certain situations, echoes from very distant targets may appear as false echoes (second-trace echoes) on the screen.
4. FALSE ECHOES Occasionally false echoes appear on the screen at positions where there is no target. In some cases the effects can be reduced or eliminated. The operator should familiarize himself or herself with the appearance and effects of these false echoes, so as not to confuse them with echoes from legitimate contacts. 4.1 Multiple Echoes Multiple echoes occur when a short range, strong echo is received from a ship, bridge, or breakwater.
4.3 Indirect Echoes 4.4 Indirect echoes may be returned from either a passing ship or returned from a reflecting surface on your own ship, for example, a stack. In both cases, the echo will return from a legitimate contact to the antenna by the same indirect path. The echo will appear on the same bearing of the reflected surface, but at the same range as the direct echo. Figure 4-3 illustrates the effect of an indirect echo.
5. MAINTENANCE & TROUBLESHOOTING This chapter tells you how to keep your radar in good working order. Before reviewing this chapter please read the safety information which follows. A maintenance program should be established and should at least include the items listed in Table 5-1. 5.2 Replacing the Fuse The fuse in the fuse holder at the back of the display unit protects the equipment against reverse polarity of ship's mains, overcurrent, and equipment fault.
5.3 Troubleshooting Table 5-2 contains simple troubleshooting procedures which you can follow to try to restore normal operation. If you cannot restore normal operation, do not attempt to check inside any unit of the radar system. Any repair work is best left to a qualified technician. Table 5-2 Troubleshooting table If... But... Then... you pressed the the control panel does • try adjusting the control panel back[POWER] key to turn not light lighting on the OTHERS menu.
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6. ARP-10 (OPTION) WARNING No one navigational aid should be relied upon for the safety of vessel and crew. The navigator has the responsibility to check all aids available to confirm position. Electronic aids are not a substitute for basic navigational principles and common sense. • This auto plotter automatically tracks an automatically or manually acquired radar target and calculates its course and speed, indicating them by a vector.
6.1 General 6.2 Keys Used for Auto Plotter The Auto Plotter ARP-10 is an optional circuit board which is accommodated in the display unit of the FR-7062 radar. The Auto plotter utilizes the following touchpad keys. Given below is a brief description of these keys. The Auto Plotter permits manual or automatic acquisition and automatic tracking of up to 10 radar targets. An internal microprocessor calculate target data such as speed and course and displays the results in alphanumeric and by vectors.
6.3 Activating the Auto Plotter [ ARP MENU ] Select item by T-ball and press ENTER key. To activate the ARP-10, follow the steps shown below. 1 . Display 2 . All Cancel 3 . Vector Ref 4 . Vector Length 1. Adjust the GAIN, A/C SEA and A/C RAIN controls for proper radar picture. 2. Press the [MENU] key to open the main menu. 6 . CPA Set 7 . TCPA Set 4. Press the [ACQ/ENTER] key. The menu shown in Figure 6-1 appears.
Deactivating the auto plotter 1. Press the [MENU] key. Note 3: When auto acquisition mode (Auto ACQ) is on, up to five targets can be acquired. For details, see 6.5 Automatic Acquision. 2. Open the “ARP-10 MENU”. 3. Operate the trackball to select the “1. Display”. 4. Operate the trackball to select “Off”. 5. Press the [ACQ/ENTER] key. 6. Press the [MENU] key to close the menu. 6.4 Manual Acquisition Follow the steps below to manually acquire a target. Up to 10 targets can be manually acquired. 1.
6.6 Terminating Tracking of Targets When the ARP-10 has acquired 10 targets, no more acquisition occurs unless targets are lost. Should this happen, cancel tracking of individual targets or all targets by the procedure described below. Individual targets Place the cursor (+) on the target which you do not want to be tracked any longer by operating the trackball and press and hold down the [SELECT/CANCEL] key. Place the cursor on a wanted target and press the [SELECT/CANCEL] key.
6.8 Mode and Length of Vectors True or relative vector Target vectors are displayed in relative or true mode. Own ship does not have a vector in relative mode. Vector length From the ARP-10 MENU, Vector Length can be set to 30 seconds, 1, 3, 6, 15 or 30 minutes and the selected vector time is indicated on the screen. Provided that this feature is used correctly, it will help prevent the risk of collision by alerting you to threatening targets.
SPECIFICATIONS OF MARINE RADAR FR-7062/7112/7252 1. GENERAL (1) Indication System PPI Daylight display, raster scan, 8 tones in monochrome (2) Range, Pulselength (PL) & Pulse Repetition Rate (PRR) (range max. FR-7062: 64 nm, FR-7112: 72 nm, FR-7252: 96 nm) Range (nautical miles) PL PRR SP 2100 Hz 0.125 0.25 0.5 0.75 1 1.5 3 4 6 8 12 16 24 36 48 64 72 96 0.08 µs 0.3 µs MP 1200 Hz LP 2 0.
(5) Intermediate Frequency 60 MHz (6) Tuning Automatic or manual (for manual, select manual tuning on menu and tune by trackball) (7) Receiver Front End MIC (Microwave IC) (8) Bandwidth Tx pulselength 0.08 Tx pulselength 0.8 (9) Duplexer s and 0.3 s: 25 MHz s: 3 MHz Circulator with diode limiter 4.
Heading (Magnetic): HDM>HDG*1>HDT*1>VHW>VHW*1 Course (True): RMC>RMA>VTG Course (Magnetic): VTG>RMC>RMA Waypoint(Range, Bearing): RMB>BWC>BWR Loran time difference: RMA>GLC>GTD Water depth: DPT>DBT>DBK>DBS Water temperature: MTW>MDA Time: ZDA XTE: RMB>XTE>APB *1: calculate by magnetic drift. (7) Output Data NMEA0183(Ver.1.5/2.0), RS-422 TLL (target data) and RSD 5.
XN13A(24rpm): 80 W to 120 W(100 kt) FR-7112 XN12A(24rpm): 85 W to 100 W(100 kt) XN12A(48rpm): 95 W to 120 W(70 kt) XN13A(24rpm): 90 W to 130 W(100 kt) FR-7252 XN12A(24rpm): 105 W to 125 W(100 kt) XN12A(48rpm): 120 W to 140 W(70 kt) XN13A(24rpm): 115 W to 150 W(100 kt) 7. DIMENSIONS AND MASS See Outline Drawings 8. CORTING COLOR (1) Display Unit Panel: N3.0 Chassis: 2.5GY5/1.5 (2) Scanner Unit N9.5 9. COMPASS SAFE DISTANCE (1) Display Unit Standard: 1.1 m Steering: 0.8 m FR-7062/7112 Standard: 1.
Index A Acquisition ............................................... A/C RAIN ................................................ A/C SEA ................................................ ARPA ....................................................... O 6-4 2-5 2-4 6-2 B Bearing .................................................... 2-7 Blind Sectors ........................................... 4-4 Brilliance........................................... 2-4, 3-8 C Course Up ...........................................
