Furuno FR-2125V Operator's Manual
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Furuno FR-2125V Operator's Manual

Furuno FR-2125V Operator's Manual

Furuno marine radar user's manual fr-2125v
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MARINE RADAR
FR-2125V
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Summary of Contents for Furuno FR-2125V

  • Page 1 MARINE RADAR FR-2125V MODEL...
  • Page 2 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 T e l e p h o n e : 0 7 9 8 - 6 5 - 2 1 1 1 T e l e f a x : 0 7 9 8 - 6 5 - 4 2 0 0...
  • 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 Danger/Warning Labels in Display Unit This display unit contains the danger/warning labels shown below. Do not remove the labels. If a label is peeling off or is illegible, contact a FURUNO agent for replacement. WARNING To avoid electrical shock, do not remove cover.
  • Page 5 Safety Instructions for ARPA ARP-26 (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.
  • Page 6 Safety Instructions for VIDEO PLOTTER RP-26 (Option) CAUTION No one navigational aid should be relied upon for the safety of vessel and crew. The navigator has the responsi- bility to check all aids available to confirm position. Electronic aids are not a substitute for basic navigational principles and common sense.

  • Page 7: Table Of Contents

    INTRODUCTION ... viii SYSTEM CONFIGURATION 1. OPERATION Turning on the Power ... 1-1 Transmitter ON ... 1-2 Control Head ... 1-3 CRT Brilliance ... 1-5 Tuning the Receiver ... 1-5 On-screen Legends and Markers ... 1-6 Degaussing the CRT Screen... 1-7 Initializing the Gyro Readout ...
  • Page 8 2. RADAR OBSERVATION General ... 2-1 False Echoes ... 2-3 SART (Search and Rescue Transponder) ... 2-5 RACON (Radar Beacon) ... 2-7 3. MAINTENANCE Periodic Maintenance Schedule ... 3-2 Life Expectancy of Major Parts ... 3-2 Replacement of Battery ... 3-3 4.
  • Page 9 APPENDIX Menu Tree ... A-1 Set-up for Fishing Vessel ... A-6 SPECIFICATIONS ... SP-1 INDEX...

  • Page 10: Introduction

    A 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 more than half a century, FURUNO Electric Company has gained an unrivaled reputation as a world leader in the industry.

  • Page 11: System Configuration

    XN12AF-RSB-0074-063 XN12AF-RSB-0075-063 XN20AF-RSB-0074-063 XN20AF-RSB-0075-063 XN24AF-RSB-0074-063 XN24AF-RSB-0075-063 Gyrocompass IEC-61162-1 Serial Data Navigator (Input/Output) IEC-61162-1 Serial Data Speed Log (Input) * Not available for statute mile-(SM) type radar. Option SYSTEM CONFIGURATION ANTENNA UNIT DISPLAY UNIT RDP-126 ARPA ARP-26* Gyro Converter GC-8 Video Plotter RP-26* Alarm Kit DC spec...

  • Page 12: Operation

    Turning on the Power Before turning on the radar, make sure no one is near the antenna unit. Serious injury or death may result if a rotating antenna strikes someone standing nearby. The [POWER] switch is located at the left corner of the control head. Push it to switch on the radar system.

  • Page 13: Transmitter On

    Transmitter ON When the STANDBY status is displayed on the screen, press the transmit switch labeled STBY/TX on the control head of the display unit. The radar is initially set to previously used range and pulsewidth. Other settings such as brilliance levels, VRMs, EBLs and menu option selections are also set to previous set- tings.

  • Page 14: Control Head

    Control Head A/C RAIN Suppresses clutter from rain, snow, clouds. A/C SEA Suppresses sea clutter to improve the short range discrimination. BRILLIANCE Adjusts the brightness of entire screen. POWER BRILLIANCE ANTENNA TUNE DEGAUSS ERROR EBL Control, EBL ON/OFF Keys Pressing ON key toggles between No.1 and No.2 EBLs.
  • Page 15 PANEL BRILL VECTOR CENTER CHART OFFSET ALIGN TARGET CU, TM TRAILS RESET CANCEL (11) (14) (1) MODE: Selects presentation modes: Head-up, Head-up TB, North-up, Course-up and True Motion. (2) PANEL BRILL: Adjusts brightness of the control head panel. (3) HL OFF: Temporarily erases the heading line. (4) OFF-CENTER: Activates and deactivates off-centering of the own ship position.

  • Page 16: Crt Brilliance

    CRT Brilliance The [BRILLIANCE] control on the control head of the display unit adjusts the entire screen brightness. Note that the optimum point of adjustment varies with ambient light conditions, especially between daytime and nighttime. Note: The CRT brilliance should be adjusted before adjusting relative brilliance levels on the BRILLIANCE menus to be explained later.

  • Page 17: On-Screen Legends And Markers

    On-screen Legends and Markers Heading Marker 2nd Trace Range/Range Ring Interval Echo Rejector 0.75 /0.25SM Range and bearing +0.350SM to cursor 330 0 T Presentation HEAD UP RM mode PULSE 1 M1 Pulselength EAV3 Echo Averaging Interference Rej. Echo Stretch Guard Alarm Cursor No.1 VRM...

  • Page 18: Degaussing The Crt Screen

    0.439SM Target Data TCPA BCT> 99.9MIN EPA Setting TRUE VECTOR OWN SHIP [GP] Position Degaussing the CRT 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.

  • Page 19: Initializing The Gyro Readout

    Initializing the Gyro Readout When a gyrocompass is interfaced with the radar, ship’s heading is displayed at the top right-hand corner of the screen. Upon turning on the radar, align the on-screen HDG read- out with the gyrocompass reading by the procedure shown below. Once you have set the initial heading correctly, resetting is not usually required.

  • Page 20: Entering Own Ship's Speed

    Entering Own Ship’s Speed EPA and any azimuth stabilized presentation modes require speed input and gyrocom- pass signal. The speed can be entered from a speed log (automatic) or through the plot- ting keypad (manual). 1.9.1 Automatic speed input 1. Press the [RADAR MENU] key and the [0] key to show the FUNCTIONS 2 menu. [FUNCTIONS (2)] 1 [FUNCTIONS (1)] 2 BKGD COLOR...

  • Page 21: Presentation Modes

    1.9.2 Manual speed input 1. Press [RADAR MENU], [0] to show the FUNCTIONS 2 menu. 2. Press the [6] key to select menu 6 SHIP SPEED. 3. Press the [6] key to select (or highlight) MAN. 4. Press the [ENTER] key to confirm selection. At this point, “MAN = 00.0KT” appears on the FUNCTIONS 2 menu.
  • Page 22 Presentation mode, representative display Heading Marker North Marker Heading Marker 240 250 220 230 Bearing scale rotates with gyrocompass signal. Heading Marker North Marker Description A display without azimuth stabilization in which the Heading line connecting the center with the top of the display Line indicates own ship’s heading.
  • Page 23 Presentation mode, representative display North Heading Line North Heading Line 340 350 (a) True motion selected * 75% in case of NM-type radar. 1-12 Description In the north-up mode, target pips are painted at their measured distances and in their true (compass) Heading directions from own ship, north bearing maintained up Marker...

  • Page 24: Selecting The Range Scale

    1.11 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.
  • Page 25 2. To enable selection of S2 (0.15 ms) and M1 (0.3 ms) pulsewidth on the 3 SM range, select S2 at 3 SM in the PULSE WD 1 menu and M1 at 3 SM in the PULSE WD 2 menu. A longer pulse provides an increased detection range, but with reduced discrimination.

  • Page 26: Adjusting The Sensitivity

    1.13 Adjusting the Sensitivity The [GAIN] control is used to adjust the sensitivity of the receiver, and thus the intensity of echoes as they appear on the screen. It should be adjusted so that the speckled back- ground noise is just visible on the screen. To become acquainted with the way the [GAIN] control works, try rotating it between fully counterclockwise and clockwise positions while observing the radar picture.
  • Page 27 Press the [A/C AUTO] key to turn the A/C AUTO circuit on or off. A/C AUTO appears at the bottom left-hand corner of the screen when the A/C AUTO circuit is on. Use of a function key is also a good method for reducing sea clutter. For this purpose, presetting is required. Consult a FURUNO representative. PANEL MODE...

  • Page 28: Suppressing Precipitation Clutter

    1.15 Suppressing Precipitation Clutter In adverse weather conditions, clouds, rain or snow produce a lot of spray-like spurious echoes and impairs target detection over a long distance. This situation can be improved by using a function key provided that it is so programmed. If the function key fails to offer a favorable suppression of the rain clutter, adjust the [A/C RAIN] control on the control head.

  • Page 29: Measuring The Range

    To activate the interference rejector; 1. Press the [RADAR MENU] key. The following appears. 2. Press the [7] key to select INT REJECT. 3. Successive presses of the key increase the effect of interference rejection, up to level 3. A fourth press deactivates the interference rejector. Switch off the interference rejec- tor when no interference exists;...
  • Page 30 4. Press the [2] key to select RINGS BRILL. 5. Press the [2] key again. Each pressing gradually increases the brightness of the rings in 4 steps and the fifth pressing erases them. 6. Press the [ENTER] key to confirm you selection. 7.

  • Page 31: Measuring The Bearing

    1.18 Measuring the Bearing Use the Electronic Bearing Lines (EBLs) to take bearings 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.

  • Page 32: Collision Assessment By Offset Ebl

    1.19 Collision Assessment by Offset EBL The origin of the EBL can be placed anywhere with the trackball to enable measurement of range and bearing between any two targets. This function is also useful for assessment of the potential risk of collision. To assess possibility of collision: 1.

  • Page 33: Measuring Range And Bearing Between Two Targets

    1.20 Measuring Range and Bearing Between Two Targets 1. Press the [EBL OFFSET] key, and place the origin of the No. 1 EBL, for example, on a target of interest (target 1 in the illustrated example), by operating the trackball. 2.

  • Page 34: Setting A Target Alarm Zone

    1.21 Setting a Target Alarm Zone CAUTION The target alarm should not be relied upon as the sole means for detecting possible collision situations. The opera- tor of a ship is not relieved of the re- sponsibility to keep lookout for possible collisions, whether or not the radar is in use.
  • Page 35 Figure 1-24 How to set target alarm zone 1.21.2 Acknowledging alarm A target entering the watch zone produces both visual (flashing) and audible (beeping) alarms. To silence the audible alarm, press the [2] key shortly on the FUNCTIONS 1 menu and the label TGT ALARM1 ACK replaces TGT ALARM1 on the display.

  • Page 36: Off-Centering

    1.22 Off-Centering 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 the cursor position, but not more than 75% of the range in use; if the cursor is set beyond 75% of the range scale, the sweep origin will be off-centered to the point of 75% of the limit.

  • Page 37: Echo Averaging

    3. Press the [3] key to select ECHO STRETCH. 4. Press the [3] key until Echo Stretch option 1, 2, 3 or OFF as desired is highlighted. 5. Press the [ENTER] key to conclude your selection followed by the [RADAR MENU] key to close the FUNCTIONS menu.
  • Page 38 Echo average is inoperable when a gyrocom- pass signal is not available. If you wish to use this feature without a gyrocompass sig- nal, consult a FURUNO representative. [FUNCTIONS (2)] 1 [FUNCTIONS (1)] 2 BKGD COLOR...

  • Page 39: Electronic Plotting Aid (Epa)

    1.25 Electronic Plotting Aid (EPA) A maximum 10 operator-selected targets can be plotted electronically to assess their motion trend. Five past positions can be displayed for each of the plotted targets. If you enter a 6th plot on a certain target, the oldest plot (past position) will be erased. A vector appears when you enter a second plot for the target and is updated each time a new plot is entered.
  • Page 40 1.25.1 Plotting a target To perform electronic plotting: 1. Place the cursor(+) on a target of interest by operating the trackball. 2. Press the [ACQ] key and one of numeric keys, and the plot symbol with number ap- pears at the cursor position. 3.

  • Page 41: Target Data

    2. Press the [ENTER] key to confirm your selection. 3. Press the [PLOT MENU] key to close the menu. The vector tip shows an estimated position of the target after the selected vector time elapses. It can be valuable to ex- tend the vector length to evaluate the risk of collision with any target.
  • Page 42 1.25.6 Setting CPA/TCPA alarm ranges When the predicted CPA of any target becomes smaller than a preset CPA alarm range and its predicted TCPA less than a preset TCPA alarm limit, the EPA releases an aural alarm and displays the warning label COLLISION on the screen. In addition, the EPA symbol changes to a triangle and flashes together with its vector.

  • Page 43: Target Trails

    1.25.8 Changing size of the plotting symbols You can change the size of the plotting symbols as follows: 1. Press the [PLOT MENU] key to show the EPA menu. 2. Press the [3] key two or three times until plot symbol size option STD (standard) or LARGE is highlighted.
  • Page 44 1 [FUNCTIONS (3)] 2 EBL1 3 EBL2 4 VRM1* 5 VRM2* 6 TRAIL 7 TRAIL GRAD SGL/MULT 8 [PULSE WD 1] 9 [PULSE WD 2] 0 [RADAR (2)] 3. Press the [6] key to select menu item 6 TRAIL. 4. Press the [6] key to select (or highlight) REL (Relative) or TRUE option. 5.

  • Page 45: Parallel Index Lines

    Each press of the [1] key within five seconds cyclically changes target trail length (time) as below: OFF - 30 s - 1 min - 3 min - 5 min - 15 min - 30 min - continuous - OFF The current target trail setting is displayed at the lower-right corner of the screen.
  • Page 46 1.27.1 Displaying, erasing the index lines 1. Press [RADAR MENU], [4] key to display or erase the index lines. 2. Orient the index lines in a desired direction with the EBL rotary control. The azimuth of the index lines appear at the bottom of the screen. 1.27.2 Adjusting index line intervals 1.

  • Page 47: Origin Mark

    6. If you selected NO. 2 VRM in step 3 above, make sure that the No. 2 VRM is active and adjust the spacing between the index lines by operating the VRM control. 7. Press the [RADAR MENU] key to close the FUNCTIONS 2 menu. 1.28 Origin Mark You can mark any reference points, prominent target or a point of particular interest using the origin mark feature.

  • Page 48: Zoom

    1.28.2 Attaching ID number or symbol to origin marks Origin marks may be affixed with ID numbers or symbols corresponding to the keys in use. 1. Press [RADAR MENU], [0], [0], [2], [0] and [0] to show the RADAR 3 menu. 2.

  • Page 49: Menu Keys

    1.30.4 Own ship symbol The own ship symbol ( ) can be displayed/erased on the RADAR 2 menu. The symbol is scaled to indicate the length and beam of the vessel. If the largest dimension of the sym- bol gets smaller than 6 mm, the symbol will disappear and own ship will be represented with a small dot or circle depending on the range in use.

  • Page 50: Radar 1, 2 And 3 Menu Settings

    1.32 RADAR 1, 2 and 3 Menu Settings [RADAR MENU] key [FUNCTIONS (1)] 1 TARGET TRAILS 2 TARGET ALARM (1 or 2) 3 ORIGIN MARK (1 to 10) 4 INDEX LINES 5 ZOOM 6 PULSE WIDTH 7 INT REJECT 8 ARPA 9 VIDEO PLOT 0 [FUNCTIONS (2)] [0] key...

  • Page 51: Function Keys

    1.33 Function Keys The four function keys (#1-4) on the control head serve for a macro function to instantly select a combination of assigned functions or settings. The function keys provide optimum radar settings for a specific purpose with a single key operation. Each function key can be assigned a combination of particular radar settings that will be most suited to your specific navigating purpose, and an adhesive label (such as BUOY, HARBOR, COAST or the like) is usually attached to the key top for easy identification of...
  • Page 52 Note: Function key presetting requires a good knowledge of optimum radar settings. If you want to change the original function key settings, consult your nearest FURUNO rep- resentative or dealer.

  • Page 53: Watch Alarm

    1.33.3 Watch alarm The watch alarm sounds an external buzzer at selected time intervals to help you keep regular watch of the radar picture for safety or other purposes. This feature can be as- signed to function key #4 with a choice of alarm intervals of 6, 10, 12, 15 and 20 minutes. (See the flowchart on page 1-45 for sequence.) Provided that function key #4 is assigned the watch alarm feature, just press function key #4 to activate the feature.
  • Page 54 1.33.4 Setting for function keys #1/#2/#3 RADAR MENU [FUNCTIONS (1)] 1 TARGET TRAILS 2 TARGET ALARM (1 or 2) 3 ORIGIN MARK (1 to 10) 4 INDEX LINES 5 ZOOM 6 PULSE WIDTH 7 INT REJECT 8 ARPA 9 VIDEO PLOT 0 [FUNCTIONS (2)] [FUNCTIONS (2)] 1 [FUNCTIONS (1)]...
  • Page 55 Picture setup default for function keys 1, 2 and 3 Table 1-3 Picture setup default for Function Keys 1, 2 and 3 1-44...
  • Page 56 1.33.5 Setting for function key #4 RADAR MENU [FUNCTIONS (1)] 1 TARGET TRAILS 2 TARGET ALARM (1 or 2) 3 ORIGIN MARK (1 to 10) 4 INDEX LINES 6 PULSE WIDTH 7 INT REJECT 8 ARPA 9 VIDEO PLOT 0 [FUNCTIONS (2)] [FUNCTIONS (2)] 1 [FUNCTIONS (1)] 2 BKGD COLOR...

  • Page 57: Barge Information

    1.34 Barge Information Do the following to display the barge information. 1. Press [RADAR MENU], [0], [0], [2], [0] and [0] to display the RADAR 3 menu. 2. Press the [2] key twice to select BARGE MK ON, followed by the [ENTER] key. 3.
  • Page 58 Notes on radar map operation 1) Own ship position display requires an input from radionavigational equipment such as a GPS receiver in accordance with the data format as defined by IEC 61162-1. 2) Wind, water current, depth, water temperature are not displayed when relevant sen- sors are not fitted.
  • Page 59 000 00.000 E/W 7-E 8-W MARK 01 08 X CANCEL ENTER MARK: CANCEL KEY * Appears when L/L mode is selected (step 3). 6. Select a wanted position, followed by the [ENTER] key. Positions can be selected either by the Trackball, lat/lon values, or at own ship. 7.
  • Page 60 1.35.3 Storing the map data When you have made a map, store it with a map number as follows: 1. Press [NAV MENU], [1] to display the RADAR MAP menu. 2. Press the [7] key to show the ENTRY MAP menu. 3.

  • Page 61: Suppressing Second-Trace Echoes

    1.35.5 Erasing contents of a radar map 1. Press [NAV MENU], [1] and [9] to display MAP ERASE menu. 2. Press a wanted number key twice to select ON or ALL, followed by the [ENTER] key. 3. Press the [NAV MENU] key to leave the menu. 1.36 Suppressing Second-trace Echoes In certain situations, echoes from very distant targets may appear as false echoes (sec- ond-trace echoes) on the screen.

  • Page 62: Adjusting Brilliance Of Screen Data

    1.38 Adjusting Brilliance of Screen Data You can adjust relative brilliance levels of various marks and alphanumeric readouts dis- played on the screen by the steps below: 1. Press the [RADAR MENU] key to show the FUNCTIONS 1 menu. 2. Press the [0] and [9] keys to show the BRILLIANCE 1 menu. To display the BRIL- LIANCE 2 menu, further press the [0] key.

  • Page 63: Display Of Wind/Tide/Depth/Time

    The table below describes which menu item adjusts the brilliance of which picture ele- ment. Table 1-4 Brilliance menu option and function adjusted Note: You should adjust the entire CRT brilliance by operating the [BRILLIANCE] control before adjusting the respective brilliance levels on the BRILLIANCE 1 and 2 menu. 1.39 Display of Wind/Tide/Depth/Time Wind Wind, ocean current and depth sounding data can be displayed as follows:...

  • Page 64: Rate-Of-Turn Scale

    Note: Wind data and current data require appropriate sensors. The depth data requires an adequate echo-sounding equipment. The echogram shows the last 30 minutes of depths along the ship’s track. Wind vector shows a direction from which the wind blows in, relative to own ship heading, and labeled T*.

  • Page 65: Alarms

    1.41 Alarms The table below summarizes alarms which may occur at various warning conditions. u l i u l i u l i 1-54 Table 1-5 Alarms " l " 0 " . ) " * " " * . "...
  • Page 66 Table 1-5 Alarms (con’t.) s l i S " c i t e l i t i s c i t y l l s t i " r . y l s i l . f f 1-55...

  • Page 67: Radar Observation

    It is a good practice to use a shorter range scale as far as it gives favorable definition or clarity of picture. The IMO Resolution A. 477 (XII) and IEC 936 require the minimum range to be less than 50 m. All FURUNO radars satisfy this requirement.

  • Page 68: 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 Bearing accuracy...

  • Page 69: False Echoes

    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. 2.2.1 Multiple echoes Multiple echoes occur when a transmitted pulse returns from a solid object like a large ship, bridge, or breakwater.

  • Page 70: Virtual Image

    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 71: Sart (Search And Rescue Transponder)

    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. When interrogated, it first sweeps rapidly (0.4 s) through the band before beginning a relatively slow sweep (7.5 s) through the band back to the starting frequency.

  • Page 72: General Remarks On Receiving Sart

    2.3.2 General remarks on receiving SART SART range errors When responses from only the 12 low frequency sweeps are visible (when the SART is at a range greater than about 1 nm), the position at which the first dot is displayed may be as much as 0.64 nm beyond the true position of the SART.

  • Page 73: Racon (Radar Beacon)

    A/C RAIN control This should be used normally (to break up areas of rain) when trying to detect a SART response which, being a series of dots, is not affected by the action of the anti-clutter rain circuitry. Note that Racon responses, which are often in the form of a long flash, will be affected by the use of this control.

  • Page 74: Maintenance

    Periodic checks and maintenance are important for proper operation of any electronic systems. This chapter contains maintenance instructions to be followed to obtain optimum performance and the longest possible life of the equipment. WARNING Do not open the equipment. Hazardous voltage which can cause electrical shock exists inside the equipment.

  • Page 75: Periodic Maintenance Schedule

    Periodic Maintenance Schedule Table 3-1 Periodic maintenance schedule s t l - i l - i l - i l Life Expectancy of Major Parts The hours shown in the table below are the average usage times for ocean-going ships. When the radar is mainly used for detection of small targets on long ranges the usage times will be lower than shown.

  • Page 76: Replacement Of Battery

    Replacement of Battery A battery installed on the RP Board or GYRO CONVERTER Board inside the display unit helps preserve the data when the power is turned off. The life of the battery is about five years. When the battery voltage is low, NG appears at diagnostic test for RP board. Contact your dealer for replacement.

  • Page 77: Troubleshooting

    4. TROUBLESHOOTING 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 warn- ing sign near the switch indicating it should not be turned on while the antenna...

  • Page 78: Easy Troubleshooting

    Easy Troubleshooting This section provides easy troubleshooting for the user. Advanced-level Troubleshooting This paragraph provides information for the service technician to cure hardware and soft- ware problems. (This radar equipment contains complex modules in which fault diagnosis and repair down to component level are not possible by users.) Table 4-2 Advanced-level troubleshooting table .
  • Page 79 Table 4-2 Advanced-level troubleshooting table (con’t.) i n i t i s ) . t y l l v i t y t i v i t E " " 1 E " " 2 l e l n i l n i l ) t i t r i...

  • Page 80: Diagnostic Test

    Table 4-2 Advanced-level troubleshooting table (con’t.) . y l y l t Diagnostic Test A diagnostic test program is provided to enable testing of major circuit boards in the radar display unit. Note that the normal radar picture is lost during this test. Proceed as follows to execute the diagnostic test: 1.
  • Page 81 [RADAR MENU] key [FUNCTIONS (1)] 1 TARGET TRAILS 2 TARGET ALARM (1 or 2) 3 ORIGIN MARK (1 to 10) 4 INDEX LINES 5 ZOOM 6 PULSE WIDTH 7 INT REJECT 8 ARPA 9 VIDEO PLOT 0 [FUNCTIONS (2)] [0] key [FUNCTIONS (2)] 1 [FUNCTIONS (1)] 2 BKGD COLOR...

  • Page 82: Test Pattern

    The test program checks the logic boards and the keyboard. The squares represent the corresponding keypads. Numerals indicate the position of the controls under check. FR-2105V SPU Board (03P9253) Program No. PROGRAM NO MAIN 03591570** ARP Board (18P9002) 18590381** Program No. 18590391** 03590941** RP Board...

  • Page 83: Arpa Arp-26 (Option For Nm-Type Radar)

    5. ARPA ARP-26 (Option for NM-type radar) General This radar can accommodate an ARPA (Automatic Radar Plotting Aid) module ARP-26 complying with IMO A.823 and IEC 60987-1. This chapter describes the operation of the ARPA. For operation of normal radar, refer to Chapter 1. Note: ARP-26 is not available with statute mile (SM)-type radar.

  • Page 84: Controls For Arpa

    Controls for ARPA The ARPA uses the keys on the plotting keyboard on the right side of the control head. PLOT MENU: Shows/hides ARPA menus. Plot Symbol keys: Select specific plot symbols for manually acquired targets. TARGET CANCEL: Terminates tracking of a single target specified by the trackball if the key is pressed with a hit-and-release action.
  • Page 85 5.3.2 Setting ARPA parameters Various parameters for the ARPA are set on the ARPA 1 and ARPA 2 menus. To do this, follow the steps shown below: 1. Press the [PLOT MENU] key to show the ARPA 1 menu. 2. Press the [0] key once if you wish to go to the ARPA 2 menu. 3.

  • Page 86: Start-Up Procedure

    Start-up Procedure The ARPA requires own ship’s speed input and heading data. The speed can be entered automatically from a speed log (SDME, Speed and Distance Measuring Equipment), navaid, or by referencing to a target-based speed (based on three max. stationary objects). Manual input is also possible.

  • Page 87: Manual Speed Input

    4. Press the [ENTER] key to conclude your selection followed by the [RADAR MENU] key to close the FUNCTIONS 2 menu. The ship’s speed readout at the top of the screen shows own ship’s speed fed from the speed log preceded by the label “LOG.” Notes on automatic speed input 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 data (forward speed).

  • Page 88: Automatic Acquisition

    3. Press the [PLOT MENU] key and the [6] key followed by the [ENTER] key. The reference target mark (see below) appears at the cursor position and the own ship data label changes from “LOG,” “NAV” or “MAN” to “REF.” Note that it takes 60 scans or approximately one minute before a new speed is displayed.
  • Page 89 5.5.1 Enabling and disabling auto acquisition 1. Press [RADAR MENU], [8] twice, [ENTER] and [RADAR MENU] if the ARPA is not yet activated. Note that the label ARPA appears at the screen center. 2. Press the [PLOT MENU] key to show the ARPA 1 menu. 1 VECTOR TIME 2 AUTO ACQ 3 AUTO ACQ AREA...
  • Page 90 Figure 5-5 Predefined auto acquisition areas Free selection of acquisition zones (Menu item: SET) To set auto acquisition areas with trackball: 1. Press the [PLOT MENU] key to show the ARPA 1 menu. 2. Press the [3] key to select AUTO ACQ AREA. 3.

  • Page 91: Manual Acquisition

    Note: If you wish to create an auto acquisition area having a 360-degree coverage around own ship, set point B in almost the same direction (approx. 5 ) as point A and press the [ENTER] key. 8. Repeat steps 5 to 7 above if you want to set another auto acquisition area with the trackball.

  • Page 92: Changing Plot Symbol Size, Plot Symbols

    (a) Immediately after acquisition, this plot symbol is shown in broken lines. (b) Within 20 scans (or 1 min) of the antenna after acquisition, a vector appears to show a trend of movement. (c) Within 60 scans (or 3 min) of the antenna after acquisition, the plot symbol changes to a small circle indicating steady-state tracking condition.
  • Page 93 5.7.2 ARPA symbols The symbols used in this equipment comply with IEC 60872-1. c i t y l l (flashing) y l l (flashing) (flashing) c i t t i s In 60 scans, changes to d i l y l l t i s s i l l l u...

  • Page 94: Adjusting Brilliance Of Plot Marks

    l a i 5.7.3 ARPA, EPA symbols shown on fishing vessel specification radar Adjusting Brilliance of Plot Marks 1. Press [RADAR MENU], [0] to show the FUNCTIONS 2 menu. 2. Press the [9] and [0] keys to show the BRILLIANCE 2 menu. 3.

  • Page 95: Displaying Target Data

    Displaying Target Data The ARPA mode (with built-in ARP-26 optional board) provides the full functionality of ARPA as required by the IMO Resolution A.823(19) and IEC 60872-1, including display of range, bearing, course, speed, CPA and TCPA of all plotted targets. Data on one target may be displayed.

  • Page 96: Vector Modes

    5.10 Vector Modes Target vectors can be displayed relative to own ship’s heading (Relative) or north (True). 5.10.1 Ground stabilization and sea stabilization Target vectors can be ground stabilized or sea stabilized. Sea stabilization is a mode where own ship and all targets are referenced to the sea using gyro heading and single axis log water speed inputs in the True Motion mode.

  • Page 97: Past Position Display

    5.10.4 Vector time Vector time (or the length of vectors) can be set to 30 seconds, 1, 2, 3, 6, 12, 15 or 30 minutes and the selected vector time is indicated at the screen center. 1. Press the [PLOT MENU] key to display the ARPA 1 menu. 2.

  • Page 98: Set And Drift (Set And Rate)

    5.11.2 Selecting the number of dots and past position plot intervals 1. Press [PLOT MENU], [0] to show the ARPA 2 menu. 2. Press the [4] key to select HISTORY POINTS. 3. Further press the [4] key to select a desired number of past positions (5, 10 or 20). 4.

  • Page 99: Setting Cpa/Tcpa Alarm Ranges

    7. Press the [RADAR MENU] key to close the menu. The label LOG (or NAV) changes to WT (Water Tracking) or BT (Bottom Tracking). Set and drift data can also be used in the basic radar without ARPA function. 5.13 Setting CPA/TCPA Alarm Ranges The ARPA continuously monitors the predicted range at the Closest Point of Approach (CPA) and predicted time to CPA (TCPA) of each tracked target to own ship.

  • Page 100: Setting A Guard Zone

    5.13.2 Acknowledging CPA/TCPA audible alarm Press the [AUDIO OFF] key to acknowledge and silence the CPA/TCPA aural alarm. The warning label COLLISION and the flashing of the triangle plot symbol and vector remain on the screen until the dangerous situation is gone or you intentionally terminate tracking of the target by using the [TARGET CANCEL] key.
  • Page 101 Figure 5-11 GUARD ZONE SET menu 6. Press the [2] key and the [ENTER] key. ([2], [2], [ENTER] when setting the No. 2 zone.) 7. Referring to figure below, place the cursor at the outer left corner of the area (point A) and press the [ENTER] key.

  • Page 102: Operational Warnings

    5.14.3 Acknowledging the guard zone alarm Press the [AUDIO OFF] key to acknowledge and silence the guard zone aural alarm. 5.15 Operational Warnings There are six main situations which cause the ARPA to trigger visual and aural alarms: • CPA/TCPA alarm •...

  • Page 103: System Failure Alarm

    5.15.6 Automatically acquired targets The indication “AUTO TARGET FULL” appears at the screen center and a short beep tone sounds when the number of automatically acquired targets reaches 20. 5.15.7 System failure alarm When the ARP board receives no signal input from the radar or external equipment, the screen shows both “SYSTEM FAIL”...
  • Page 104 Note that once a dynamic trial maneuver is initiated, you cannot alter own ship’s trial speed, course or delay time until the trial maneuver is terminated. 5.16.2 Static trial maneuver A static trial maneuver displays only the final situation of the simulation. If you enter the same trial speed, course and delay time under the same situation as in the aforemen- tioned example of dynamic trial maneuver, the screen will instantly show position OS7 for own ship, position A7 for target A and position B7 for target B, omitting the intermediate...
  • Page 105 2. Press the [2] key to select TRIAL MODE. 3. Further press the [2] key to select (or highlight) STATIC or DYNAMIC as appropriate. 4. Press the [ENTER] key to conclude your selection followed by the [1] key to go back to the ARPA 1 menu.

  • Page 106: Arpa Performance Test

    5.17 ARPA Performance Test Test program is provided for assessing the ARPA overall performance. Note that normal operation is interrupted and the label “XX” is displayed at the bottom of the screen during this test. The test may be terminated at any moment. To execute the performance test: 1.

  • Page 107: Criteria For Selecting Targets For Tracking

    5.18 Criteria for Selecting Targets for Tracking The FURUNO ARPA video processor detects targets in midst of noise and discriminates radar echoes on the basis of their size. Target whose echo measurements are greater than those of the largest ship in range or tangential extent are usually land and are dis- played only as normal radar video.

  • Page 108: Factors Affecting Arpa Functions

    5.18.3 Automatic acquisition areas and suppression lines Performance of auto-acquisition is enhanced by controlling the limit lines (suppression line) in the former series of FURUNO ARPAs. In this new series of ARPAs, the automatic acquisition rings are used instead of the limit lines.

  • Page 109: Blind And Shadow Sectors

    Low clouds Usually no effect. If necessary, adjust the [A/C RAIN] control. Non-synchronous emissions No effect. Low gain Insufficient or low radar receiver gain will result in some targets not being acquired at long distance. The ARPA display will be missing on one or more targets that could only be visible if the radar sensitivity control (GAIN control) were increased.

  • Page 110: Indirect Echoes

    Indirect echoes A target at close range is usually picked up directly, but it can also be received as reflec- tion from a large, flat surface. This will result in the radar presenting two or more echoes on the display, each at a different range. The ARPA can acquire and track the false echo if it is detected by five consecutive scans.

  • Page 111: General

    The Video Plotter RP-26 is an optional circuit board which is accommodated in the display unit of the radar. It permits use of two memory cards, a memory card (RAM) for storing the operator created radar maps, and the other is a chart card (ROM) for storing FURUNO made digital charts.

  • Page 112: The Video Plotter Display

    The drive for the ROM card can also drive the Electronic Reference Chart (ERC). The ERC is a digital chart published by the Japanese Hydrographic Bureau. Note it is not an ENC used for ECDIS. The Video Plotter Display Press the [RADAR MENU] key. Press the [9] key once or twice for “Chart plus Radar” or “Radar”.

  • Page 113: Chart Position Correction

    Note: HU is not available on the RADAR/VIDEO PLOTTER display. When own ship mark is at a distance from the screen center 3/4 the range in use it is automatically reset to a point of 50% radius. 6.3.1 Precaution for chart/memory cards Both the chart card and memory card are susceptible to sunlight and magnetic material.

  • Page 114: Set-Up Of Video Plotter Display

    Set-up of Video Plotter Display 6.4.1 Hiding/Showing graphics 1. Press [NAV MENU], [8] to display the PLOT DISP SELECT menu. Current selections appear in reverse video. Blank items have been turned off on the VIDEO PLOTTER INITIAL SETTING menu. For further details see paragraph 6.10 Initial Settings. 1 [VIDEO PLOTTER 1] 2 DANGER HIGHLIGHT 3 COAST LINE...
  • Page 115 For “OWN SHIP POSN” (manual input of position), do the following; 1) Press the [4] key. 2) Enter latitude in seven digits. 3) Press the [ENTER] key. (If necessary to change to coordinate, press [4], [ENTER]). 4) Enter longitude in eight digits. 5) Press the [ENTER] key.

  • Page 116: Track

    6. Press the [NAV MENU] key to close the menu. Track This section provides the information necessary for setting the track display conditions of both own ship and other vessels. 6.5.1 Stopping plotting of own ship’s track 1. Press [NAV MENU], [5] in order to show the OWN SHIP, TARGET PLOT menu. 1 [VIDEO PLOTTER 1] 2 RECORD OWN SHIP PLOT 3 OWN SHIP PLOT INTVL...
  • Page 117 1. Press [NAV MENU], [5] in order. 2. To change own ship’s track plotting interval, press the [3] key several times to display desired plotting interval in reverse video. 3. Press the [ENTER] key. 4. To change other ships’ track plotting interval, press [6] (several times) to select plotting interval.

  • Page 118: Marks, Lines

    2. Press the [8] key to select smoothing factor. 3. Press the [ENTER] key. 6.5.6 Erasing track In the busy traffic, the screen may become cluttered. You can remove all or a percentage of own ship track from the memory to clear the display. Track of other ships can also be cleared.
  • Page 119 2. Press the [6] key to select method of mark entry; CURSOR, L/L or OWN SHIP POSN. 3. Press the [ENTER] key. 4. Press the [NAV MENU] key. Entering marks/lines at CURSOR or OWN SHIP POSITION 1. Select CURSOR or OWN SHIP POSITION following “Selecting method of entry” on the previous page.
  • Page 120 000 00.000 MARK NO. 01 08 X CANCEL ENTER MARK: CANCEL KEY Figure 6-11 ENTER MARK menu (L/L position) 2. Enter latitude by numeric keys followed by the [ENTER] key. 3. Enter longitude followed by the [ENTER] key. 4. Enter mark number to select desired mark followed by the [ENTER] key. 5.

  • Page 121: Waypoints

    Waypoints 6.7.1 Entering waypoints Maximum 100 waypoints, numbered 00 - 99, can be entered by the trackball, by latitude and longitude, or at own ship position. 1. Press [NAV MENU], [4] and [2] in order. The following display appears. 1 [ENTER WPT, NAV LINE] 2 ENTER WPT 3 WPT NO.
  • Page 122 6.7.3 Displaying a waypoint A single waypoint may be shown on the display. 1. Press [NAV MENU], [1] and [8] to choose the WAYPOINT menu. 3. Press the [2] key twice to select WPT ON and then press the [ENTER] key. 4.

  • Page 123: Navigation Lines

    Showing external waypoint You can show the external waypoint from a navaid as follows: 1. Press [NAV MENU], [8] to open WAYPOINT menu. 2. Press the [7] key to select WPT DATA. 3. If NAVAID is not in reverse video, press the [7] key again. 4.
  • Page 124 5. Repeat step 4 to continue entering waypoint numbers. 6. Press the [NAV MENU] key to register navigation line. 6.8.2 Adding waypoint to navigation lines To add waypoints to a navigation line; 1. Press [NAV MENU], [4] and [5]. 2. Press the [2] key. Enter navigation line number and press the [ENTER] key. 3.
  • Page 125 6.8.7 Displaying navigation lines Navigation lines may be set up as follows: 1. Press [NAV MENU], [3]. 2. Press the [2] key to select NAV LINE. 3. If ON is not in reverse video, press the [2] key again. 4. Press the [ENTER] key. 1 [NAV INFORMATION 1] 2 NAV LINE 3 NAV LINE NO.

  • Page 126: Recording, Replaying Data

    Recording, Replaying Data 6.9.1 Formatting memory cards Before you can use a memory card (RAM card) with the RP-26, the card must be format- ted. Formatting prepares the recording surface of the card for use with the system. Insert a new memory card in the right side card drive and follow the procedure below to format it. 1.

  • Page 127: Initial Settings

    6.9.3 Replaying data 1. Press [NAV MENU], [6]. 2. If REPLAY is not in reverse video, press the [6] key again. 3. Press the [ENTER] key. 4. Press numeral key to select file to replay. You can go to the next page by pressing the [0] key.

  • Page 128: Menu Tree

    Radar Menu [RADAR MENU] Key [FUNCTIONS (1)] 1 TARGET TRAILS 2 TARGET ALARM (1 or 2) 3 ORIGIN MARK (1 to 10) 4 INDEX LINES 5 ZOOM 6 PULSE WIDTH 7 INT REJECT 8 ARPA 9 VIDEO PLOT 0 [FUNCTIONS (2)] [FUNCTIONS (2)] 1 [FUNCTIONS (1)] 2 BKGD COLOR...
  • Page 129 RADAR Menu (con’t.) [3], [4] or [5] [FUNCTION KEY 1] 1 [FUNCTIONS (3)] 2 FUNC KEY1 PICTURE/OPERATION 3 PICTURE FUNC1/BUOY/SHIP/ SHORT/LONG/CRUISING/ HARBOR/COAST/SEA/ ROUGH SEA/RIVER/BIRD 4 INT REJECT OFF/1/2/3 5 ECHO STRETCH OFF/1/2/3 6 ECHO AVERAGE OFF/1/2/3 7 A/C AUTO OFF/ON 8 [FUNC 1 PULSE WD] 9 NOISE REJECT OFF/ON...
  • Page 130 NAV Menu, PLOT Menu [PLOT MENU] Key [EPA] 1 VECTOR TIME 30SEC/1/2/3/6/12/15/30MIN 2 COLLISION ALARM OFF/ON 0.0SM TCPA 00.0MIN 3 MARK SIZE STD/LARGE 4 PLOT NO. OFF/ON [NAV MENU] Key (Radar only mode) [NAV INFORMATION (1)] 1 [RADAR MAP] 2 SELECT NAVAID GPS+LC/DEAD RECKONING 3 OWN SHIP POSN...
  • Page 131 NAV Menu w/RP-26 [NAV INFORMATION (1)] 1 [VIDEO PLOTTER (1)] 2 SELECT NAVAID GPS DEAD RECKONING 3 OWN SHIP POSN OFF L/L 4 POSN 00 00.000N/S 00 00.000 E/W 5 +CURSOR DATA OFF/REL/TRUE 6 WPT DATA 7 [NAV LINE] 8 [WAY POINT] 9 WIND DATA OFF/ON 0 [NAV INFORMATION (2)]...
  • Page 132 PLOT Menu w/ARP-26 [PLOT MENU] Key [ARPA (1)] 1 VECTOR TIME 30SEC/1/2/3/6/12/15/30MIN 2 AUTO ACQ OFF/ON 3 AUTO ACQ AREA 3. 6/[SET] 4 GUARD ZONE OFF/ON 5 [GUARD ZONE SET] 6 TARGET BASED SPEED 1 OR 2 OR 3 7 REFERENCE TARGET VECT OFF/ON 8 COLLISION ALARM TCPA 00.0MIN...

  • Page 133: Set-Up For Fishing Vessel

    This radar can be customized as a fishing vessel version, with an internal setting. The fishing vessel version requires and additional picture setup option “BIRD,” which is as- signable to one of the functions keys depending on a setting on FUNCTION KEY #1, #2 or #3 menu shown below.
  • Page 134 (6) Noise Figure (7) Spurious Response 3. RADAR DISPLAY (1) Picture Tube (2) Scanning (3) Minimum Range FR-2125V Slotted waveguide array 6.5 ft (XN20AF), 8 ft (XN24AF) 1.23º (XN20AF), 0.95º (XN24AF) 20º -28 dB or less (within ±1º of main-lobe) -32 dB or less (±1º...
  • Page 135 (4) Range Scales and Ring Intervals (5) Range Accuracy (6) Range Discrimination (7) Bearing Accuracy (8) Bearing Discrimination (9) Presentation modes (10) Variable Range Markers (11) Offcenter (12) Guard Zone (13) Electronic Plotting Aids (EPA) (14) Parallel Index Lines 4. INTERFACE (1) Gyrocompass (2) Speed Log (3) External Radar (option)
  • Page 136 7. COATING COLOR (1) Display Unit (2) Antenna Unit 8. COMPASS SAFE DISTANCE Display Unit Antenna Unit Panel: N3.0 dark gray, Cover: 2.5GY5/1.5 N9.5 white Standard Steering 1.40 m 1.05 m 2.15 m 1.60 m SP - 3...
  • Page 137 A/C AUTO key 1-16 A/C RAIN control 1-17 A/C SEA control 1-16 ACQ key 1-29 Alarm messages 1-54 ARPA ARP-26 acquisition (automatic) 5-6–5-9 acquisition (manual) 5-9 activating 5-2 controls 5-2 CPA, TCPA alarms 5-17–5-18 criteria for selection of targets 5-25–5-26 deactivating 5-6 factors affecting ARPA accuracy 5-26–5-28 guard zone 5-18–5-20...
  • Page 138 Nav data display 1-52 NAV MENU key 1-38 Navigation line display 1-50 North marker 1-37 North-up mode 1-12 OFF CENTER key 1-25 Off-centering 1-25 Origin mark attaching ID number, symbol 1-37 inscribing 1-36 Own ship symbol 1-38 PLOT MENU key 1-38 POWER switch 1-1 Precipitation clutter suppression 1-17 Presentation mode 1-10–1-12...

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