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Furuno FR-7041R-MARK-2 Operator's Manual

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MARINE RADAR
FR-7041R-MARK-2

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Summary of Contents for Furuno FR-7041R-MARK-2

  • Page 1 Back MARINE RADAR FR-7041R-MARK-2...
  • Page 2 Yo u r L o c a l A g e n t / D e a l e r 9 - 5 2 , A s h i h a r a - c h o , N i s h i n o m i y a , J a p a n Te l e p h o n e : 0 7 9 8 - 6 5 - 2 111 Te l e f a x :...
  • Page 3 Note: If the antenna unit is installed at a close distance in front of the wheel house, your administration may require halt of transmission within a certain sector of antenna revolution. This is possible. Ask your FURUNO representative or dealer to provide this feature.
  • Page 4 Do not re- move the label. If the label is missing or Fire, electrical shock or serious injury can result. damaged,contact a FURUNO agent or dealer. Turn off the power immediately if water DISPLAY UNIT WARNING...

  • Page 5: Table Of Contents

    TABLE OF CONTENTS FOREWORD ............v 1.20 Measuring Range and Bearing SYSTEM CONFIGURATION......vii Between Two Targets ...... 1-20 1.21 Shifting the Picture......1-21 1. OPERATION 1.22 Zoom..........1-22 1.1 Controls ..........1-1 1.23 Guard Alarm ........1-23 1.1.1 Display unit ........1-1 1.23.1 Selection of guard zone type...
  • Page 6 1.37 Selecting Ranges to Use ....1-34 3. MAINTENANCE, TROUBLESHOOTING 1.38 Position Data ........1-34 3.1 Maintenance Program ...... 3-2 1.39 Dead Sector ........1-35 3.2 Replacing the Fuse......3-2 3.3 Troubleshooting ........ 3-3 2. INTERPRETING THE DISPLAY 3.3.1 Easy troubleshooting ....3-3 2.1 General ..........

  • Page 7: Foreword

    Thank you for considering and purchasing FURUNO. Features The FR-7041R-MARK-2 has a large variety of functions, all contained in a rugged case. All controls respond immediately to the operator’s command and each time a key is pressed, the corresponding change can be seen on the screen.
  • Page 8 • The CRT can be set to turn off automatically during standby to reduce power consumption. • Ship’s position in latitude and longitude, ship’s speed, and range and bearing to a waypoint can be shown in the bottom text area with navigation input in IEC 61162-1 (NMEA 0183) format.

  • Page 9: System Configuration

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

  • Page 10: Operation

    OPERATION Controls 1.1.1 Display unit Control: Adjusts sensitivity of radar receiver. Turns power on. Switch: Temporarily erases Press together with heading marker. [STBY/TX] key to turn power off. GAIN POWER Toggles between standby and HM OFF(PUSH) Control:Suppresses sea clutter. transmit. A/C SEA STBY Switch: Stretches echoes in bearing...

  • Page 11: Remote Controller

    1. OPERATION 1.1.2 Remote controller The remote controller provides control of offcenter, standby, transmit and range functions. Toggles standby, transmit. Sweep center moves to ST BY CENTER stern direction 30% (offcenter). Selects radar range. RANGE Figure 1-2 Remote controller...

  • Page 12: Turning The Radar On And Off

    1. OPERATION Turning the Radar On and Off 1.2.1 Turning on the radar Press the [POWER] switch. The control panel lights and a timer displays the time remaining for warm up of the magnetron, counting down from 1:30 to 0:01. Further, the bearing scale, range, range ring interval, pulselength, and presentation mode are displayed.

  • Page 13: Indications And Markers

    1. OPERATION Indications and Markers Tuning status (AUTO or MANUAL) Echo trail elapsed time Tuning bar Heading (requires heading data) Echo trail time Heading marker Guard zone G(OUT) or G(IN) Range . 125 HDG 234.5˚ TRAIL AUTO ZOOM or 25 : 38 30min Range ring interval OFFCENTER...

  • Page 14: Control Panel Illumination

    1. OPERATION Control Panel Illumination You may adjust the illumination for the control panel as follows. 1. Press the [MENU] key to show the main menu. Sel by T-ball & press ENTER. DISP INDEX RINGS DATA LINE REJECT Change brill OTHER MENU from 3 to max.

  • Page 15: Tuning The Receiver

    1. OPERATION Tuning the Receiver The radar receiver can be tuned automatically or manually, and the default tuning method is automatic. 1.7.1 Automatic tuning In automatic tuning, the radar is automatically tuned every time the radar is switched to transmit. The tuning indicator and the indication AUTO at the top right corner show the tuning circuit is working.

  • Page 16: Selecting Pulselength

    1. OPERATION Selecting Pulselength The pulselength in use is displayed at the upper left corner of the display. 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 setting, however, it is possible to change it for the 3 and 6 kilometer ranges as below.
  • Page 17 1. OPERATION 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.

  • Page 18: Suppressing Precipitation Returns

    1. OPERATION 1.12 Suppressing Precipitation Returns The vertical beamwidth of the antenna 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, hail, etc.) in the same manner as normal targets. Figure 1-8 shows the appearance of rain clutter on the display.
  • Page 19 1. OPERATION Presentation mode, Description representative display Heading Head-up Mode (HUP RM) marker North marker A display without azimuth stabilization in which the line connecting the center with the top of the display indicates own ship's heading. The target pips are painted at their measured dis- tances and in their directions relative to own ship's heading.
  • Page 20 1. OPERATION Presentation mode, Description representative display Course-up Mode (CUP TM) Heading An azimuth stabilized display in which a line connect- marker North marker ing 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).

  • Page 21: Menu Overview

    1. OPERATION 1.14 Menu Overview 1.14.1 Main menu operation The main menu provides four often-used functions plus the OTHER menu. 1. Press the [MENU] key to open the main menu. Item currently selected is highlighted. Sel by T-ball & press ENTER. INDEX DISP RINGS...

  • Page 22: Others Menu

    1. OPERATION Main menu description Table 1-1 Main menu description Menu item Description RINGS Adjusts brilliance of range rings. INDEX LINE Turns parallel index lines on/off. DISP DATA Turns navigation data display on/off. INT REJECT Turns the interference rejector on/off. OTHER MENU See below.
  • Page 23 1. OPERATION OTHERS menu description Table 1-2 OTHERS menu description Menu item Description 1. Panel Dimmer Adjusts illumination of control panel. 2. Mark Brill Adjusts brilliance of all markers except heading marker, north marker and range rings. 3. HD Mark Adjusts brilliance of heading marker.

  • Page 24: Radar Interference

    1. OPERATION 1.15 Radar Interference Radar interference may occur when near another marine radar operating in the same frequency band as your radar. Its onscreen 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.

  • Page 25: Measuring The Range

    1. OPERATION 1.17 Measuring the Range In the basic radar system your ship is in the center of the display, and any target received appears in a map-like projection throughout 360 degrees. This allows the range and bearing from your vessel to a target appearing on the display to be measured.

  • Page 26: Unit Of Range Measurement For Vrm And Cursor

    1. OPERATION Range 6.0 KM Range ring interval VRM1 Target Cursor VRM2 VRM1 range Range to 4.5 KM 4.5 KM VRM2 range 3.0 KM cursor Figure 1-15 How to measure range by VRM, cursor To erase a VRM, press and hold down corresponding VRM key until the VRM disappears.

  • Page 27: Displaying True Or Relative Bearing

    1. OPERATION 6.0 KM EBL1 Cursor EBL2 EBL1 bearing Cursor bearing 45.0° 45.0° EBL2 bearing 135.0° Figure 1-16 How to measure bearing by EBL To erase an EBL, press and hold down corresponding EBL key until the EBL disappears. Tips for measuring bearing •...

  • Page 28: Collision Assessment By The Offset Ebl

    1. OPERATION 1.19 Collision Assessment by the Offset EBL The origin of the EBL can be placed anywhere with the trackball to measure range and bearing between any two targets, as well as to assess the risk of collision. 1. Use the trackball to place the cursor on the center of the target which appears to be on a collision course with own ship.

  • Page 29: Measuring Range And Bearing Between Two Targets

    1. OPERATION 1.20 Measuring Range and Bearing Between Two Targets The procedure which follows shows how to measure the range and bearing between targets A and B in Figure 1-18. 1. Use the trackball to place the cursor on target A. 2.

  • Page 30: Shifting The Picture

    1. OPERATION 1.21 Shifting the Picture Your vessel’s position can be shifted to view ahead or behind your vessel without changing the range. 1. Operate the trackball to set cursor anywhere within the effective radius. 2. Press the [SHIFT/ZOOM] key with a touch-and-release action. OFFCENTER appears at the top right corner of the display when the picture is shifted.

  • Page 31: Zoom

    1. OPERATION 1.22 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 without changing the range. 1.

  • Page 32: Guard Alarm

    1. OPERATION 1.23 Guard Alarm The guard alarm allows the operator to set the desired range and bearing for a guard zone. When ships, islands, landmasses, etc. violate the guard zone an aural alarm sounds and the offending target blinks to call the operator’s attention. CAUTION •...

  • Page 33: Setting The Guard Zone

    1. OPERATION 1.23.2 Setting the guard zone 1. Mentally create the guard zone you want to set. 2. Referring to (2) in Figure 1-22 operate the trackball to set the cursor at top left corner of guard zone. Press the [GUARD ALARM] key. “*G (IN)” (or “*G (OUT”)), with asterisk blinking, appears at the top right corner of the display.

  • Page 34: Canceling The Guard Zone And Guard Alarm

    1. OPERATION 1.23.4 Canceling the guard zone and guard alarm Press and hold down the [GUARD ALARM] key until the guard zone disappears. 1.23.5 Guard alarm sensitivity You may select the echo strength which triggers the guard alarm as follows: 1.

  • Page 35: Echo Trails

    1. OPERATION 1.25 Echo Trails 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. Figure 1-23 Echo trails 1.25.1 Selecting trail time 1. Press the [MENU] key to display the main menu. 2.

  • Page 36: Selecting Trail Gradation

    1. OPERATION 1.25.4 Selecting trail gradation The echo trails can be shown in single or multiple gradations. Multiple gradation paints the trails getting thinner with time, like the afterglow on an analog PPI radar. (Multitone) (Monotone) Figure 1-24 Monotone and multitone echo trails 1.

  • Page 37: Watchman

    1. OPERATION 1.27 Watchman The watchman function periodically transmits the radar for one minute to check for targets in a guard zone. If it finds change in the zone from the previous transmission it sounds the aural alarm, cancels the watchman function, and transmits the radar continuously.

  • Page 38: Function Keys (F1, F2)

    1. OPERATION 1.28 Function Keys (F1, F2) The function keys (F1, F2) automatically execute the program assigned to them. The programmed function can be turned on/off by pressing appropriate function key again. 1.28.1 Default settings The default function key settings are F1, Nav data, F2, Noise rejector. 1.28.2 Programming the function keys 1.

  • Page 39: Displaying Navigation Data

    1. OPERATION 1.29 Displaying Navigation Data Navigation data can be displayed at the screen bottom if this radar receives appropriate navigation data in NMEA 0183 (IEC 61162-1) format. Navigation data include position in latitude and longitude or Loran-C time difference, range, bearing and time-to-go to waypoint (selected on external navaid) and the cursor, speed, and course.

  • Page 40: Turning The Waypoint Mark On/Off

    1. OPERATION 1.29.2 Turning the waypoint mark on/off The waypoint mark shows the waypoint position fed from the navigator. You can turn this mark on or off as desired. 1. Press the [MENU] key. 2. Use the trackball to select OTHER MENU and press the [ENTER] key. 3.

  • Page 41: Notes On Navigation Data In Standby

    1. OPERATION 1.30.2 Notes on navigation data in standby Appropriate sensor required to display any data. When the range to the TO waypoint becomes 0.1 nm, the WPT mark jumps to dead ahead even though a difference may exist between heading and bearing to WPT.

  • Page 42: Suppressing Noise

    1. OPERATION 1.33 Suppressing Noise Electrical noise, appearing on the screen as “speckles,” may be suppressed with the noise rejector as below. Note that there are some forms of interference which cannot be suppressed. 1. Press the [MENU] key to show the main menu. 2.

  • Page 43: Cursor Data

    1. OPERATION 1.36 Cursor Data Cursor data can be shown as latitude and longitude position of cursor intersection or range and bearing from own ship to cursor intersection (default setting). 1. Press the [MENU] key to show the main menu. 2.

  • Page 44: Dead Sector

    1. OPERATION 1.39 Dead Sector If a dead sector (where no radar pulses are transmitted) is input at installation, it may be shown on the display as below. The default setting is Off. 1. Press the [MENU] key to show the main menu. 2.

  • Page 45: Interpreting The Display

    The IMO Resolution A. 477 (XII) and IEC 60936 require the minimum range to be less than 50 m. All FURUNO radars satisfy this requirement. Maximum range The maximum detecting range of the radar, Rmax, varies considerably...

  • Page 46: Radar Resolution

    This is determined by pulselength only. Practically, a 0.08 microsecond pulse offers the discrimination better than 35 m as do so with all FURUNO radars. Test targets for determining the range and bearing resolution are radar reflectors having an echoing area of 10 m 2.1.3...

  • Page 47: False Echoes

    2. INTERPRETING THE DISPLAY False Echoes Occasionally echo signals appear on the screen at positions where there is no target or disappear even if there are targets. They are, however, recognized if you understand the reason why they are displayed. Typical false echoes are shown below.

  • Page 48: Virtual Image

    2. INTERPRETING THE DISPLAY 2.2.3 Virtual image A relatively large target close to your ship may be represented at two positions on the screen. One of them is the true echo directly reflected by the target and the other is a false echo which is caused by the mirror effect of a large object on or close to your ship as shown in the figure below.

  • Page 49: Sart (Search And Rescue Transponder)

    2. INTERPRETING THE DISPLAY 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 nm. Each radar pulse received causes it to transmit a response which is swept repetitively across the complete radar frequency band.

  • Page 50: General Procedure For Detecting Sart Response

    2. INTERPRETING THE DISPLAY 2.3.1 General procedure for detecting SART response 1. Use the 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 automatic clutter suppression. 3.
  • Page 51 2. INTERPRETING THE DISPLAY A/C SEA control For optimum range SART detection, this control should be set to the minimum. Care should be exercised as wanted target in sea clutter may be obscured. Note also that in clutter conditions the first few dots of the SART response may not be detectable, irrespective of the setting of the anti-clutter sea control.

  • Page 52: Racon (Radar Beacon)

    2. INTERPRETING THE DISPLAY Racon (Radar Beacon) A racon is a radar transponder which emits a characteristic signal when triggered by a ship’s radar (usually only the 3 centimeter band). The signal may be emitted on the same frequency as that of the triggering radar, in which case it is superimposed on the ship's radar display automatically.

  • Page 53: Maintenance, Troubleshooting

    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. WARNING Do not open the equipment. Hazardous voltage which can cause electrical shock exists inside the equipment.

  • Page 54: Maintenance Program

    3. MAINTENANCE & TROUBLESHOOTING Maintenance Program Regular maintenance is important for good performance. Always keep the equipment as free as possible from dirt, dust, and water splashes. Make sure all screws securing the components are properly tightened. A maintenance program should be established and should at least include the items listed in Table 3-1.

  • Page 55: Troubleshooting

    3. MAINTENANCE, TROUBLESHOOTING Troubleshooting This section provides troubleshooting information for the user and service technician. 3.3.1 Easy troubleshooting If something appears to be wrong with your unit, check it by referring to the troubleshooting table below. If you cannot restore normal operation, please do not attempt to check inside any unit.

  • Page 56: Advanced Troubleshooting

    3. MAINTENANCE & TROUBLESHOOTING 3.3.2 Advanced troubleshooting This paragraph provides troubleshooting procedures for the service technician. Table 3-3 Advanced troubleshooting Problem Check point Remedy POWER key pressed but… • Fuse. control panel Measure input voltage between #1(+) does not light and #2(-) terminals of J1301 on the •...
  • Page 57 3. MAINTENANCE, TROUBLESHOOTING Table 3-3 Advanced troubleshooting (con’t.) Problem Check point Remedy STBY TX pressed to transmit but… • On the Installation Setup 1 antenna does not rotate menu, confirm that “Ant on Tx” is set to “Rotate.” • Antenna drive gears. •...

  • Page 58: Diagnostics

    3. MAINTENANCE & TROUBLESHOOTING Diagnostics The test facility checks the keyboard, ROM and RAM for proper operation and displays program no. and the number of hours the radar has been turned on and transmitted. 1. Press the [MENU] key to show the main menu. 2.

  • Page 59: Replacement Of Magnetron

    7. To quit the test, press the [MENU] key. Replacement of Magnetron When the magnetron has deteriorated the number of targets displayed decreases. If you feel long range performance has decreased contact a FURUNO agent or dealer about replacement of the magnetron. Table 3-4 Magnetron ordering information Magnetron Code no.

  • Page 60: Menu Tree

    MENU TREE Default settings shaded. MENU KEY RINGS (Off, 1, 2, 3, max) INDEX LINE (Off, On) DISP DATA (Off, On) INT REJECT (Off, 1, 2, 3) OTHERS MENU Panel Dimmer (1, 2, 3, 4) Mark Brill (1, 2, 3, 4) HD Mark (1, 2, 3, 4) Characters (1, 2, 3, 4) Trail Tone (Single, Multi)

  • Page 61: Specifications

    SPECIFICATIONS OF MARINE RADAR FR-7041R MARK-2 1. ANTENNA UNIT (1) Radiator: Slotted wave-guide array (2) Radiator length: 120 cm (3) Horizontal beamwidth: 1.9° (4) Vertical beamwidth: 22° (5) Sidelobe: Within ±20° of main lobe; less than -24 dB Outside ±20° of main lobe; less than -30 dB (6) Polarization: Horizontal (7) Antenna rotation speed:...
  • Page 62 (4) Bearing resolution: 2.2° (5) Bearing accuracy: Within 1° (6) Range discrimination Better than 17 m (7) Range ring accuracy: 0.9 % of range in use or 8 m, whichever is larger (8) Minimum range: Better than 20 m (9) Markers: Heading line, Bearing scale, Range ring, VRM 1/2, EBL 1/2, Turning indicator, Alarm zone, Cursor, North mark (heading sensor input required)
  • Page 63 5. ENVIRONMENTAL CONDITIONS (1) Useable temperature: Antenna unit: -25°C to +70°C Display unit/ Remote controller: -15°C to +55°C (2) Relative humidity: 93 % or less at +40°C (3) Waterproofing: Display unit: IPX0 Antenna unit: IPX6 Remote controller: IPX4 6. POWER SUPPLY & CONSUMPTION (1) Power supply &...

  • Page 64: Index

    INDEX A/C RAIN control ........1-9 GAIN control..........1-7 A/C SEA control.......... 1-7 Guard alarm sensitivity ..........1-25 setting ............1-24 Bearing silencing..........1-24 measurement........1-17 type ............1-23 reference..........1-18 GUARD ALARM key .........1-24 BRILL key ........... 1-4 Brilliance characters ..........1-33 Heading marker.........1-15 markers ..........
  • Page 65 POWER switch ........... 1-3 STBY/TX key..........1-3 Presentation mode........1-9 System configuration........vii Pulselength ..........1-7 TLL key............1-25 Racon............2-8 Troubleshooting Range ............1-6 advanced ..........3-4 measurement........1-16 easy ............3-3 presetting ..........1-34 Tuning............1-6 selection..........1-6 unit of measurement for VRM, cursor .. 1-17 Virtual image..........2-4 RANGE key..........

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