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Furuno FR-7111 User's Manual

1. 3 T TT 350 1 M12 BOLT 2 97 cwWIOSSDX SEAL WASHER Kita PLATFORM 4 M4 x10 n aK CLAMP PLATE PACKING 25 7 7 38 A 8 88 DETAIL OF CABLE ENTRY 2n B MATERIAL Q TY DWG NO REMARKS XN8 HSB 0035 XN12A RSB 0036 27 BPE RADAR SCANNER UNIT C3306 002 P FURUNO ELECTRiC LTD 53118 39677 8 02 1000 0 EQUI a 005 818 Bp laCRE EIEN i OW P 10 _ 3N0 193725 2 8 580 1 HWW 63 41 X H x 04 54 asa 00 0 H VIYO 831834802 Y 508 ecer Ob 9 00 80004458 lc ponent x 1 1 9 a ae uum quar EPI PP 1081400 pd 2 81 NUS fix amp 8LOV3HN 3IS 03014 2 2 124 Gm CHA scan 221 i 89 00 10080 ARKEN gt 689 202 M n OND 8 8U0 IHM OK E 4 85 P ed 03014 8 5 50 T we 08 ml PIU Jom il 4 Bu EBLOVANN SQIVAVN N p P 3 H 1 4 95 Bpen peni 001 210 PEJ pp 10 gt b x
2. NAV DATA Chenged Noke EV added 7 E 5 4 1 14 eu __ 57135 s 2 4 00 f Lt 2624 a a eLA Cel T LL LL 337260 8 3306 2024 331260 4 gt 3373 62 gt
3. G IN appears in inverse video If this happens raise the range to re display the guard zone Atarget echo does not always mean a landmass reef ships or surface objects but can imply returns from sea surface or precipitation As the level of these returns varies with envi ronment the A C SEA A C RAIN and GAIN should be prop erly adjusted to be sure the alarm system does not overlook target echoes The minimum echo strength which triggers the alarm can be selected through the Installation Setup 1 menu 1 25 Trailing Target Movement Echo Trail 1 26 CSS 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 trailing Press the ECHO TRAIL key to start echo trailing Press the key again within three seconds to select echo trailing time namely trail length in minutes Trailing time is available in 15 seconds 30 seconds 1 minute 3 minutes 6 minutes 15 minutes 30 min utes and continuous TRAIL the echo trailing time selected and elapsed time appear at the top right hand corner of the dis play Then afterglow starts extending from all targets Elapsed time 2 TRAIL 0 03 305 Trailing time Echo Trail Normal Display Echo Trail OFF Echo Trail ON Figure 1 19 How the echo trail feature works NOTE 17 the range or mode is changed or the off c
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5. 65 011 100 1000 132 336 1 5 012 050 000 134 424 5 MI A6SPF0012 100 000 133 817 05500 03 038 9001 000 801 826 120 008 441 880 _ 1 503 64 10 008 467 050 10 Select one S03 64 15 008 467 060 15 Connector fitted at 503 64 20 008 467 070 20 m both ends S03 64 30 008 467 080 30m 1 0359235 000 134 086 CW 1053DX 000 850 021 12 60505 304 000 862 191 13001 for scanner unit 12505 304 000 864 263 810 x 45 SUS 03 121 3002 0 100 191 070 for scanner unit may not be used FGBO 15A 000 549 014 2 For 12V power 125VAC FGBO 10A 000 549 065 2 For 24V 32V power 125VAC Qty Remarks For AC power 10 For C 2000 For AD 100 6 pin 4 pin cross 10m 1 5m 5m 6 pin 6 pin cross 08456880 i 30535 1 1 Yogi Jid Overview 1 Operational Overview This radar is basically very easy to operate If you change con trol setting you will see the associated reaction almost immedi ately on the screen Most keys carry abbreviated names to show their functions The same nomenclature appears on the display for your confirmation To familiarize yourself with the controls of your radar tum it on presuming it is installed and try operating some of the controls as you review this section E io Be
6. Datt Connection of monitor buzzer HDG External navaid connection By connecting an external navaid which has NMEA 0183 signal format own ship s speed position in latitude longitude and the range and bearing to waypoint can be input to this radar and be seen in the bottom text area Further waypoint position is marked on the scree and cursor position can be output to the navaid An NMEA cable fabricated with a connector is optionally sup plied Remove the NMEA IN OUT jack cap on the rear panel to expose the NMEA jack RSD signal is output from the NMEA IN OUT jack at the inter val of several seconds Monitor connection A full function monitor FMD 8000 and or a remote radar dis play FMD 1800 can be connected to the SPU Board For wiring information see the interconnection diagram Echosounder temperature indicator connection Water depth and temperature can be displayed on the radar screen Connect echosounder or temperature indicator to the NMEA IN jack on the rear of the display unit DJ 1 Connect scanner cable here Connection of gyrocompass fluxgate sensor _ NMEA IN Connection of echosounder temperature indicator etc IN Connection of navaid etc N Photo No 3169 POWER Connector Connect power cable here 3 12 15 GROUND TERMINAL 24 32 10A Connect ground wire here Figure 5 10 Display unit rear view 5 11
7. 1 13 Measuring Range 1 14 In the basic radar system your ship is in the center of the display and any target received appears in a map like projection through out 360 degrees This allows the range and bearing from your vessel to a target appearing on the display to be measured You can measure the range to a target three ways bythe range rings by the cursor bythe VRM Variable Range Marker Measuring range by range rings To get a rough measurement of the range to a target use the range rings Press the RINGS key to turn on the range rings Further pressing of the key adjusts their brilliance or turns them off Each time the key is pressed the newly selected brilliance level appears momentarily at the top of the display for your con firmation To measure range by the range rings 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 Measuring range by cursor To measure range by the cursor rotate the trackball to place the cursor intersection on the inside edge of the target The range to the cursor intersection appears at the bottom of the display Cur sor range bearing and cursor position are alternately displayed by pressing the ENTER key Measuring range by VRM 1 Press either the VRM1 or VRM2 key The readout of the ac tive marker is circumscribed m
8. NOTE This function magnifies not only targets but also sea clut ter and radar interference For this reason be sure the controls for adjustment of sea clutter and radar interference are prop erly adjusted before activating the echo stretch 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 audible alarm cancels the watchman function and transmits the radar continuously This feature is useful when you do not need the radar s function continuously but want to be alerted to radar tar gets in a specific area Tx ST BY ST BY Tx 22 1min 5 10 20 min 1 min 5 10 20 1 min Watchman starts Figure 1 21 How watchman works 1 29 1 30 Turning on watchman 1 Create guard zone usually 360 degrees with the guard alarm function referring to page 1 22 2 Press the MENU key 3 Operate the trackball to select Mode amp Function 4 Press the ENTER key 5 Operate the trackball to select 2 Watchman 6 Operate the trackball to select watchman rest period 5 min utes 10 minutes or 20 minutes 7 Press the ENTER key 8 Press the MENU key twice to close the menu WATCHMAN appears at the top of the screen the radar trans mits for one minute to check for targets inside the guard zone and then the CRT shuts off and the radar goes into stand by NO
9. EBL1 1 VRM2 EBL2 Figure 1 8 Display bottom showing location of EBL and VRM readouts 2 Operate the trackball to place the outside edge of the VRM on the inside edge of the target 3 Check the VRM readout at the bottom right hand corner of the display to find the range to the target Range P 66 NM Range Ring Interval 7 2 Target e shorter dash VRM2 Cursor Range Rings M am VAMI Range _4 5 NM Cursor VRM2 Range Range __ Figure 1 9 Measuring range by the cursor range rings and VRM Erasing active VRM Press and hold down the corresponding VRM key about two seconds Unit of range measurement for VRM and cursor The VRM and cursor ranges can be displayed in nautical miles kilometers or statute miles Select one on the Mode amp Func tion menu For the N type radar the unit is fixed for nm Measuring Bearing There are three ways to measure the bearing to a target bythe bearing scale rough estimate bythe cursor and by the EBL Electronic Bearing Line Measuring bearing by cursor Rotate the trackball to set the cursor intersection on the center of the target The bearing to the cursor intersection appears at the bottom of the display Cursor range bearing and cursor position are alternately displayed by pressing the ENTER key 1 15 1 16 EBL1 Bearing EBL2 Bearing
10. The asterisk indicates the guard zone is partially set 3 Operate the trackball to set the cursor on point C or D See Figure 1 18 3 4 Press GUARD ALARM key The asterisk disappears See Figure 1 18 4 A Blinking Guard zone you G IN or want to set G OUT D C Set cursor on point or B and press To erase guard zone 0 2 and cancel guard 4j _ Set cursor isappears pi o G IN or on point C Blinking G OUT or D G N or Guard Zone G OUT C Press 4 3 Figure 1 18 How to set the guard zone Silencing the audible alarm Any radar targets violating the guard zone will trigger the au dible alarm You can silence the audible alarm by pressing the GUARD ALARM key When this is done replaces G CIN or OUT This means the alarm is temporarily deactivated Press the key again to reactivate the alarm Canceling the guard zone and guard alarm Press and hold down the GUARD ALARM key until the guard zone disappears Notes on the guard alarm The alarm is a useful anticollision aid but does not relieve the operator of the responsibility to also keep a visual lookout for possible collision situations The alarm should not be re lied upon as the sole means for detecting possible collision situations When the radar range is less than one half of the guard zone range the guard zone disappears
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12. the boat to ensure best performance at maximum range In addition if there is a radio direction finder on the vessel lo cate its antenna clear of the scanner unit to prevent interfer ence to the direction finder separation of more than two meters is recommended Compass safe distance 1 0 meter standard compass and 0 74 meter steering compass should be observed to prevent deviation of the magnetic compass The interconnection cable run between the scanner and the display is 10 meters long If additional cable is required for a particular installation an unbroken length must be used namely no splices allowed and the maximum length is 30 meters Deposits and fumes from a funnel or other exhaust vent can adversely affect the aerial performance and hot gases tends to distort the radiator portion The scanner unit must not be mounted where it may be subjected to temperatures in excess of 70 C The scanner base is made of aluminum which will corrode if the mounting platform is made of iron For this reason paint the mounting platform if it is made of iron to prevent electrolytic corrosion Do not paint the radiator aperture to ensure proper emis Sion of the radar waves prevent damage to the scanner unit do not lift it by the radiator Mounting 1 2 3 Drill four bolt holes 813 mm for scanner housing and multicore cable entry hole approx 50 mm diameter in the radar mast platf
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14. Speed Radiator Length Horizontal Beamwidth Vertical Beamwidth Sidelobe Attenuation Wind Speed Resistance Slotted waveguide array Horizontal 24 rpm nominal 12 scanner 120 cm XN13A scanner 180 cm XN12A scanner Less than 1 9 XN13A scanner 1 2 22 12 Within 20 of main lobe less than 24 dB Outside 20 of main lobe less than 30 dB Within 10 of main lobe less than 24 dB Outside 10 of main lobe less than 30 dB Relative wind speed 51 5 m s 100 knots TRANSCEIVER MODULE Frequency Modulation Peak Output Power Transmitting Tube Warmup Time 9410 MHz 30 MHz X band PON 10 kW Magnetron MG5241 2 minutes 30 seconds Pulselength PL amp Pulse Repetition Rate PRR us 5 Range nautical miles 8 12 15 24 36 48 64 us ___ Ld dod d 1l p 550Hz on 48 and 64 ranges 500 Hz on 72 nm range Spurious Rejection Modulator Intermediate Frequency Tuning Receiver Front End Better than 40 dB FET Switching Method 60 MHz Automatic or manual for manual select manual tuning on menu and tune by trackball MIC Microwave IC Bandwidth Tx pulselength 0 08 us and 0 3 us 25 MHz Tx pulselength 0 8 us 5 MHz Duplexer Circulator with diode limiter DISPLAY UNIT Indication System PPI Daylight display raster scan Picture Tube 12 inch rectangular 184 mm x 245 mm m
15. and cursor LIL position alternately displayed by ENTER key Heading input required 1 32 2 Performance and Interpretation Overview an aid to navigation radar can be a very valuable tool No other navigation aid can give you the ability to spot vessels com ing at you in the fog or tel you the location of the inlet to the harbor in the pitch black of night To help you understand better what your radar can and cannot do for you this chapter covers the characteristics of the radar wave target properties and radar wave reflection range and bearing resolution and false echoes The Radar Wave and Radar Horizon How the radar wave travels The radar wave tends to travel in straight lines at the speed of light However it is subject to bending or refraction in the atmo sphere the amount depending on region and density Super refraction Super refraction is a condition in which there is an upper layer of warm dry air over a surface layer of cold moist air Radar waves bend downward and thus increase the ranges at which targets may be detected Sub refraction Sub refraction is the reverse condition of super refraction a layer of cold air is above a layer of warm air Radar waves bend up ward and thus decrease the ranges at which targets may be de tected Radar horizon Radar is essentially a line of sight phenomenon That means you have just about the same range to horizon with a ra
16. as to assess the risk of collision The procedure which follows shows how to assess risk of collision D 2 3 4 5 6 Turn Press the EBL OFFSET key EBL1 s origin shifts to cursor location Operate the trackball to place EBL1 s origin cursor on the center of the target Press the EBL1 key Operate the trackball to pass EBL1 s origin through the cen ter of the display Wait several minutes If the target tracks along EBL1 towards the center of the display your vessel s position it may be on a collision course To cancel the offset EBL press the EBL OFFSET key EBL1 Readout 6 0 NM 2 0 EBL1 Origin Initial position of target Target moved here Offset EBL1 Fan iM VRM1 Readout PATA Figure 1 11 Predicting collision course by using the offset EBL 1 17 Measuring Range and Bearing Between Two Targets The procedure which follows shows how to measure the range and bearing between target and target in Figure 1 12 1 Tum on EBL 1 2 Tum on VRMI 3 Press the EBL OFFSET key EBL1 s origin shifts to cursor location 4 Operate the trackball to place EBL1 s origin cursor on the center of target A Press the EBL OFFSET key 5 Operate the trackball to bisect target with EBL1 Check the EBL readout to find the bearing between target A and target B 6 Press the VRM1 key Operate the trackball to
17. control so small targets are distinguish able but some clutter remains on the display Sea clutter at display center SEA adjusted sea clutter suppressed Figure 1 4 How 10 adjust the SEA control Tip for adjusting the A C SEA common mistake is to over adjust the circuit so all the clutter is removed As an example set up for maximum A C SEA You will see how the center of the display becomes dark This dark zone can be dangerous targets may be missed especially if the sensitivity is not properly adjusted Always leave a little clutter visible on the display to be sure weak echoes will not be sup pressed If there is no clutter visible on the display turn off the circuit Automatic adjustment of A C SEA Push in the A C SEA control A C AUTO appears at the bot tom left hand corner of the display You can fine tune by adjust ing the control Note however that with the A C AUTO circuit turned on weak echoes may be suppressed Selecting Presentation Mode Four display modes are available head up course up north up and true motion North up course up and true motion require heading sensor input Press the MODE key to select mode Each time the key is pressed if a heading sensor is connected to the radar the display and the display mode indication at the top left hand corner of the display change in the sequence of HU CU NU and TM If there is no heading sensor connection the display mode is alw
18. diameter In order to minimize the chance of picking up electrical interference avoid where pos sible routing the multicore cable near other onboard electrical equipment Also avoid running the cable in parallel with power cables Pass the cable through the hole and apply sealing com pound around the hole for waterproofing The procedure for connecting the multicore cable to the scanner unit is as follows 1 Through a pipe or waterproof cable gland fitted on the wheel house top or bulkhead 2 Remove the cable gland on the bottom of the scanner hous ing x 10 4 A Clamping Wire Plate 54 Flat A Washer N ield Fasten shield here RTB Board NOTE Use the gasket attached inside the scanner unit for the previous cable RW 6537 Figure 5 3 Passing the multicore cable through the scanner housing 3 Pass the multicore cable through the scanner base and the cable gland removed in step 2 4 Secure the cable gland to the scanner base for complete wa tertightness 5 Connect the lead wires to the RTB Board on the bottom of the scanner housing by referring to the interconnection dia gram on page 5 1 6 Attach the EMI core supplied as show below The core must be as closer to the cable gland as possible EMI Core RF Cable How to use EMI core 7 Connect the inner shield of the multicore cable to the ground terminal at the bottom of the scanner housing Final preparation 1 Place the
19. factors Current tuning method is shown above the tuning bar as either AUTO MANUAL Tuning Bar Figure 1 5 Tuning bar For how to tune the receiver manually see 5 Tuning on page 1 12 NOTE Automatic tuning may not work properly if own ship s radar receives the radar wave of another ship s radar If this is the case the radar will be out of tune Press the STBY TX twice to retune The Menu The main menu consisting of seven menus contains less often used functions which once preset do not require regular adjust ment To display or close the menu press the MENU key You can select menus sub menus and options by the trackball Note that the menu can also be displayed and options selected while the radar is in stand by MAIN MENU Select item by trackball and press ENTER key 1 Backlight Brilliance 2 P L amp Int Noise Rej 3 Nav Data 4 Mode amp Function 5 Tuning 6 Self Check 7 Installation Setup 1 Press GAIN to temporarily hide menu Press MENU key to escape Figure 1 6 Main menu Menu description Table 1 1 describes the main menu Table 1 1 Main menu description Menu Function 1 Backlight Briliance 1 Panel 2 Heading Mark 3 Other Marks Adjust panel backlighting Adjust brilliance of heading mark Adjust brilliance of EBL cursor guard zone and waypoint 4 Characters Adjust brilliance of characters Note that the brilliance of levels 1 a
20. heading mark AIC SEA SEA AUTO Control Reduces sea clutter Switch Turns automatic sea clutter adjustment on off AIC RAIN ES Control Reduces rain clutter Switch Enlarges echoes RINGS Turns range rings on off and adjusts their brilliance OFF CENTER Shifts vessel s position to cursor location GUARD ALARM Sets cancels guard alarm silences audible alarm EBL OFFSET Measures range and bearing between two targets predicts collision course VRM1 VRM2 Turns corresponding VRM on off MENU Opens closes the menu Trackball Shifts cursor and VRM Sets guard zone Selects menus options Shifts origin of EBL and VRM fou Vw Turning the Radar On and Off A FURUNO CAUTION The radar scanner emits high frequency radio ra diation which can be harmful particularly to your eyes Never look directly into the scanner from a distance of less than two feet when the radar is in operation as you could injure the cor nea of your eyes Always make sure no person is near the scan ner unit before turning on the radar Turning on the radar Press the POWER key When you turn on the radar the control panel lights and a timer displays the time remaining for warm up of the magnetron count ing down from 2 29 to 0 01 Further the bearing scale range range ring interval pulselength and presentation mode are dis played The figure below does not show those indications and ma
21. non shadowed sectors For these reasons the angular width and relative bearing of any shadow sectors should be determined For a new vessel this should be done during sea trials In other ships it should be done at the first opportunity after installing the radar Even a small shadow sector may hide another vessel if she is on a collision course with your vessel The bearing will remain con stant in the shadow area and the approach of the other vessel may remain undetected until it is too late to avoid a dangerous situation Two methods of determining the angular width of a shadow sec tor are Turn the boat very slowly through 360 while a small but clearly defined target is observed at a distance of a mile or so Do not use buoy with a reflector as this target is too power ful to achieve the required result If the echo disappears while the boat is turning the target has entered a shadow sector and it will again become visible when the target emerges from the shadow Very quiet conditions of wind and sea are essential to ensure reliable results when this operation is carried out on a small craft since a rough sea can cause a buoy to be lost in the clutter or be temporarily submerged or hidden by waves An unsteady movement may cause the boat to swing through a shadow sector before the scanner has completed one revolu tion In any case an average of several observations of each shadow sector should be taken It is a waste of time
22. of the en ergy that strikes them The strongest radar echoes known come from built up areas docks etc because these targets are less subject to changes in aspect These types of targets have three flat smooth surfaces mutually at right angles Some radar buoys are arranged this way so as to deliberately increase their detection range Range Resolution Range resolution is a measure of the capability of a radar to display as separate pips the echoes received from two targets which are on the same bearing and are close together The main factor which affects range resolution is pulselength Two targets on the same bearing close together cannot be seen as two distinct echoes on the display unless they are separated by a distance greater than one half the pulselength Radar able to Scanner Transmitted Wave di Ks bie echoes Mg e 8 8 Received Wave Transmitted Wave JL Target Received Wave Superimposed on one another Figure 2 2 Range resolution Bearing Resolution Bearing resolution is a measure of the capability of a radar to display as separate targets the echoes received from two targets which are at the same range and are close together The principal factor which affects bearing resolution is horizon tal beamwidth Two targets at the same range must be separated by more than one beamwidth to appear as separate pips Radar able to Target isplay two 9 disti
23. scanner housing cover onto the scanner housing Coat rubber gasket with grease Making sure the gasket rests properly in the groove fasten the four fixing bolts tempo rarily by hand SCANNER HOUSING COVER PINNING HOLE Figure 5 4 Fixing the scanner housing cover 2 Coat the two slot pins with grease Using a wooden mallet to prevent chipping of paint insert the pins into the pin ning holes see Figure 5 4 until the pin head is flush with the scanner housing surface 5 5 3 Now is the time to fix the radiator to the radiator bracket Remove the rubber cap on the radiator bracket and orient the radiator bracket as shown in Figure 5 6 Referring to Figure 5 7 apply grease to the O ring and set it to the center of the radiator bracket Coat the radiator fixing bolts with silicone sealant Fix the radiator to the radiator bracket with the FURUNO logo on the radiator facing ship s bow Antenna Radiator O ring Radiator Bracket NOTE Apply anticorrosive silicone sealant to areas marked by cross hatches to Waveguide prevent corrosion Flat Washer amp Spring Washer M8 x 30 amp Coat bolts with Figure 5 6 Fixing the radiator to the scanner housing 4 Open the scanner housing cover and fix the stay as shown in Figure 5 7 PTU Board Fasten ground wire here Figure 5 7 Scanner unit cover opened 3 One end of the cable with 15 9 and 7 way plugs has al ready been connected t
24. switchboard to ensure the power will not be applied while the radar system is being installed Electrical shock fire serious injury or death can result if the power is not turned off or is applied while the equipment is being installed A CAUTION Ground both the display unit and the antenna unit Ungrounded equipment can give off or receive interference or cause electrical shock Confirm that the power supply voltage is compatible with the voltage rating of the equipment Connection to the wrong power supply can cause fire or equipment damage The voltage rating appears on the label at the rear of the display unit Use only the supplied power cable Use of other power cables particularly a cables whose diameter is smaller than the supplied cable can cause fire or short circuit Use the correct fuse Use of a wrong fuse can cause fire or equipment damage NOTICE The installation must be done by a FURUNO representative or suitably qualified radar technician Authorities require this The mounting location must satisfy the following conditions Useable temperature 15 to 55 Out of direct sunlight Away from air conditioner vents Well ventilated Observe the compass safe distances to prevent deviation of a magnetic compass Standard Steering compass compass Display Unit 08m Scanner uni 07 0 5 m Keep magnets and magnetic field
25. 10A 24V 32V or 15 12V fuse on the rear panel of the display unit protects the equipment against reverse polarity of ship s mains Overcurrent and equipment fault If the fuse blows find the cause before replacing it Never use a fuse rated for more than 10A or 15A since overfusing can cause serious dam age to the equipment and void the warranty Location of Parts Scanner Motor RM 8367 Reed Switch S801 RS 1 Scanner Gasket 03 018 3222 1 RTB Board N Photo No 3167 Figure 3 1 Scanner unit radome cover opened P DANGER HIGH VOLTAGE ANODE CAP N Photo No 3165 Figure 3 2 Display unit cover opened top view Connectors for SCANNER cables of onnector DJ 1 DP 1 external equipment GYRO Connector J1353 NMEA Connector 41354 input only NMEA Connector J1352 input output Ground POWER Power Fuse N Photo No 3169 Terminal Connector F1351 J1351 Figure 3 3 Display unit rear view 4 Troubleshooting Precautions This section provides troubleshooting information for the ser vice technician Before reviewing this chapter please read the safety information which follows To the user If something appears to be wrong with your unit check it by referring to the troubleshooting table If you cannot restore nor mal operation please do not attempt to check inside any unit This equipment uses high voltage electricity which can cause severe injury or death Any repa
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29. Drawing No Page 36 u 455 anon f fdas uud 5 DH 16 07 SONV3UVSTO ONIDIANES 4 LINN 5NIXId SMAYDS 6 HO SLICE DIN 3SN SONS dO 14 0138 NOILONYLSNI NOI LVTJV ISN Ol 83433 SONVNSJINIVIN JOJ 03108 5818 0 JHL 0 NMVuaO 38 LINN JHL OS LINN JHL 40 HOVE JHL LY QS3M4O171V 38 GINOHS SONI38VO VNIXS LN3101Jd4nS SERXIEBIEYA OVWIER 49 01 LMS amp Cv 5 6 J LON E FURUNO 4 13 APPROVED xd CHECKED DRAWN BR FIXING HOL zs cp ING DIMENSIONS THIRD ANGLE PROJECTION MOUNT co ITEM OCT 22 Pp C 42 RE T 74 CXiMAZH SCALE 22 2 18 23 XN8 20 XN12A kg 250 XNT13A 50 NRA 5 ot Bon CENTER OF ROTATION 25048 87 CABLE ENTRY E TITLE XN12A 13A RSB 0037 Lo wa E 1800 85 8j 25 RADIATOR S 1 25 M1930 1760 FR 8031D FCR 1030 XN8 M1940 FR 7040D FCR 1040 XN12A FR 7100D FCR 1100 XN12A 13A 480 ___
30. FURUNO OPERATOR S MANUAL MARINE RADAR MODEL FR 7111 g FURUNO ELECTRIC CO LTD NISHINOMIYA JAPAN FURUNO ELECTRIC CO LTD 9 52 Ashihara cho Nishinomiya Japan 662 Telephone 0798 65 2111 Telefax 0738 65 4200 6111 Ali rights reserved Printed in Japan PUB 0 33930 FR 7111 Your Local Agent Dealer initial JUN 1334 E 25 1336 0008061 356 A SAFETY INSTRUCTIONS DANGER WARNING and CAUTION notices appear throughout this manual It is the responsibility of the operator and installer of the equipment to read understand and follow these notices If you have any questions regarding these safety instructions please con tact a FURUNO agent or dealer This notice indicates a potentially hazardous situation which if not avoided will result in death or serious injury DANGER This notice indicates a potentially hazardous situation which if avoided could result in death or serious injury WARNING This notice indicates apotentially 1 hazardous situation which if not CA U TI avoided could result in minor or moderate injury or property damage WARNING Hazardous voltage Can shock burn or cause death Only qualified personne should work in the unit Turn off the power at the ship s mains switchboard before beginning the installation Post a warning sign near the
31. GAIN control so background noise is just visible on the screen Suppressing Sea Returns A C SEA control Echoes from waves can be troublesome covering the central part of the display with random signals known as sea clutter The higher the waves and the higher the scanner above the wa ter the further the clutter will extend Sea clutter appears on the display as many small echoes which might affect radar perfor mance See the left hand figure in Figure 1 4 When sea clut ter masks the picture adjust the A C SEA control either automatically or manually to reduce the clutter How the A C SEA control works 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 Manual adjustment of The proper setting of the SEA control should be such that the clutter is broken up into small dots and small targets be come 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 disap pear from the display most cases adjust the control until clut ter has disappeared to leeward but a little is still visible wind ward 1 Confirm that the sensitivity is properly adjusted and then transmit on short range 2 Adjust the A C SEA
32. Nav Data Input Output Input NMEA 0183 format GP LC or any talker 5 x XDPT 3 XGLL GLC SX HDG k XMDA 93 XRMA SS XRMB S94 xDBS DBT SX GTD 5 k MTW SAX BWR H VHW AD 10 format Heading data Output NMEA 0183 format SRATLL RARSD Checking the Installation After completing the installation it is a good idea to recheck it to be sure all steps were correctly done Use the installation check list below to check the installation Tick box to indicate comple tion g The multicore cable is waterproofed at the scanner base The multicore cable is securely retained against the mast or mounting platform and is free of interference from running rigging The cable gland or entry on the deck if provided is water proofed The power connections to the battery are of correct polarity The plugs at the rear of the display unit are tightly fastened The fuse on the rear panel of the display unit is 15A 12V power or 10A 24V 32V power Adjustments on the Installation Setup 1 Menu Overview This section covers adjustment of the radar after installation on the Installation Setup 1 menu Preparation These adjustments are done through the installation setup menus 1 Turn off the radar While pressing and holding down the GAIN control about three seconds press the POWER key
33. Press the ENTER 5 This concludes all adjustments on the installation menus off the power to finish Area of no transmission Figure 5 17 of area of no transmission on the display Cancelling area of no transmission Follow Entering area of no transmission on previous page and enter all zeroes Adjusting Magnetron Heater Voltage Magnetron heater voltage is formed at the PTU Board of the scanner unit and preadjusted at the factory for use with any length of signal cable Therefore no adjustment is required However verify heater voltage by following the procedure below 1 Turn on the radar and set it in stand by 2 Open the scanner housing cover Connect a multitester set to 10V DC range between 4 and 86 of test point TP854 on the PTU Board PTU 8190 in the scanner unit 3 Confirm that the multitester shows 7 5V 0 1V If it does not adjust potentiometer VR851 on the PTU Board 4 Close the scanner housing cover and tighten the fixing bolts PTU Board PTU 8190 VR851 TP854 N Photo No 3168 Figure 5 18 Transceiver module bottom view cover removed 5 19 List of Outline Drawings amp Schematic Diagrams DmmMP A Table D 1 Outline drawings Drawing Type Display Unit RDP 108 109 110 3392 01 Radar Scanner Unit KNIZIA C3306 002 D 2 Table D 2 Schematic diagrams Drawing
34. TE 1 Watchman can be used without a guard zone NOTE 2 The antenna rotates on stand by mode NOTE 3 Watchman is cancelled when the alarm is activated Canceling watchman Go into the Mode amp Function menu and set 2 Watchman for OFF gp ania Index Lines You can display index lines max six lines The index lines are useful for maintaining a constant distance between own ship and a coastline or partner ship They can be rotated by EBL2 and their width changed by 2 Figure 1 22 Index lines Displaying Cursor Range and Bearing Cursor Position The ENTER key displays cursor range and bearing and cursor latitude and longitude position alternately at the bottom of the display 1 31 Display Indications Tuning Bar Trailing Time Guard Alarm IN or OUT Elapsed Trailing Time Heading ZOOM OFF CENTER Echo Stretch Range Range Ring Interval Pulselength Display Cursor Guard Alarm EBL1 2 Area of no transmission VRM1 sector determined at VRM2 installation Range Ring Navigation Data North Mark qm ral L L Ship s position n 5754 138 38 oa 182 WAYPOINT TTG AUTO A C SEA EBL1 Bearing Range and bearing to LAS UR iu 22 WPT TTG to WPT EBL2 Bearing EA Cursor Bearing VRM2 Range interference Rejector Cursor Range 1 Range Figure 1 23 Display indications and marks Cursor range and bearing
35. This se quence opens the installation menus Pil fA 2 When ST BY appears press the STBY TX key to trans mit 3 Select maximum range and adjust the GAIN control so the background noise is just visible on the display 4 Press the key several times to select the minimum range Adjust the A C SEA control to display nearby radar targets clearly on the screen Selecting options on installation setup 1 menu 1 Press the MENU key to display the menu MAIN MENU Select item by trackball and press ENTER key 1 Backlight Brilliance 2 P L amp Int Noise Rej 3 Data 4 Mode amp Function 5 Tuning 6 7 Installation Setup 1 Press GAIN to temporarily hide menu am Press MENU key to escape Figure 5 11 Menu 2 Operate the trackball to select 7 Installation Setup 1 and then press the ENTER key I INSTALLATION SETUP 11 Select item and option by trackball 1 Key Beep 9144 ON 2 Alm Sensor Lvl MED HIGH 3 Hdg Sensor MAG 4 Ant on Tx STOP 5 Ant Height LOW Mai HIGH 6 Operation Mode SLAVE 7 installation Setup 2 Press GAIN to temporarily hide menu Press MENU for main menu Figure 5 12 Installation setup 1 menu 3 Roll the trackball vertically to select item and horizontally to select option Press the ENTER key Repeat sequence for each item Refer to the table on the next page for guidance 5 13 Table 5 1Installation setu
36. a 1 n 890 E OE 808888 EE ENS 0 8 2 25 L2NIO PIQNM 70 04 138 4 189 af NR 0 048 3 23 0 R 4 12275 13 204 231 0 100 Figure 1 1 Display unit Control Panel GAIN OFF P OFF PUSH A C SEA ST BY n T X AC SEA ECONOMY RAIN SCPUSH RANGE LJ BRILL 5 RIN ZOOM CENTE GUARD ALARM OFFSET ECHO TRAIL INDEX EBL 1 VRM EBL 2 VRM 2 ENTER MENU v POWER Turns power on Press together with STBY TX to turn power off STBY TX A ternates between stand by and transmit ECONOMY Lights when economy mode is on MODE Selects mode among north up course up head up and true motion NAV Turns navigation data on off RANGE Selects range BRILL Adjusts display brilliance ZOOM Doubles size of area between your vessel and cursor loca tion ECHO TRAIL Displays target movement in afterglow INDEX Turns index lines on off EBLi EBL2 Tums corresponding EBL on off ENTER TRGT PLT Registers settings on menu displays cursor L L position and cursor range bearing al ternately outputs cursor position to external equip ment GAIN HM OFF Control Adjusts sensitivity of radar receiver Switch Temporarily erases
37. an be reduced through careful reduction of the sensitivity or proper adjustment of the A C SEA Main lobe True Echo Spurious Target Side lobe Scanner Side lobe Echo Figure 2 5 Side lobe echoes Blind and shadow sectors Funnels stacks masts or derricks in the path of antenna may reduce the intensity of the radar beam If the angle subtended at the scanner is more than a few degrees a blind sector may be produced Within the blind sector small targets at close range may not be detected while larger targets at much greater ranges may be detected See Figure 2 6 Vessel taller than wharf Wharf Mast etc in path of radar beam Blind Sector no echo Blind sector size depends on target size and range Figure 2 6 Blind and shadow sectors Indirect echoes 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 2 7 illustrates the effect of an indirect echo Indirect echoes may be recognized as follows they usually occur in a shadow sector they appear on the bearing of the obstruction but at the range of the legitimate contact when plotted their movements are usually abnormal and their shapes may indicate the
38. and display program no Tx hours and radar on hours These menus are for use by service technicians They cannot be accessed during normal operation 3 Nav Data cont 4 Mode amp Function Select EBL reference for relative or true true bearing requires NMEA heading input For N type radar EBL reference is 6 Self Check 7 Installation Setup 1 and 2 menus 1 12 Menu operation Press the MENU key to display the main menu 2 Operate the trackball to select a menu for example the Back lighU Brilliance menu As you move the highlighted cursor down through the menu each menu number initially shown in white on green inverses to green on white This shows the associated menu is available for selection Further menu se lection guidance appears at the bottom of the menu window 3 Press the ENTER key Figure 1 7 shows the Backlight Bril liance menu BACKLIGHT BRILLIANCE MENU 1 Select item and option by trackball Panel Heading Mark Other Marks Characters Echo Trails Press GAIN to temporarily hide menu Press MENU for main menu Figure 1 7 Backlight brilliance menu 4 Roll the trackball vertically to select sub menu 5 Roll the trackball horizontally to select option Current set tings are shown in inverse video 6 Press the MENU key twice to close the menu
39. ays HU and the MODE key is inoperative it emits several beeps when pressed Head up display without azimuth stabilization in which the line necting the center with the top of the display indicates own ship s heading The target pips are painted at their measured distances and in their directions relative to own ship s heading The short line on the bearing scale is the north mark indicating the compass north Failure of the gyro will remove the north mark and the gyro indication shows Course up azimuth stabilized display in which a line connecting the center with the top of the display follows own ship s heading Target pips are painted at their measured distances and in their directions relative to a preset course of own ship maintained UP in relation to the display This mode is useful to avoid smearing of picture during course change North up Target pips are painted at their measured distances and in their true compass directions from own ship north being maintained Up of the screen The heading mark moves according to the ori entation of own ship s heading If the gyrocompass fails the presentation mode changes to the head up mode and the north mark disappears True motion Own ship and other moving objects move in accordance with their true courses and speeds fixed targets such as a land mass appear as stationary echoes When own ship reaches a point 7546 radius of t
40. ccssessssccssessssvstsesssssecersesscerseres 1 6 Selecting Presentation 1 8 Adjusting Display Brilliance 0 cccscssssssessscssesscsresceessssesssesssssassesensassateaesecececesnsses 1 9 Erasing the Heading Mark cccccccsssssssssscscssssssssessssessssssesssceccssarscaesessacseveeserssacenes 1 9 Tuning the Receiver SEEN 1 10 Menut ce seensenceersssessssenaseconcssacensassssaccseseeestresectecssssesccesstccseeecssesecssesenaeeers 1 11 Measuring Range NEM 1 14 Measuring Bearing RRRRRRRRRRMMMEMMMMMMMMMMMM 1 15 Collision Assessment by the Offset 2 2 446 0 1 17 Measuring Range and Bearing Between Two Targets 222022421 2 1 18 Suppressing Precipitation Returns 4 1 19 Suppressing Radar Interference 066 enne enean then ties tn ae 1 20 Enlarging an Area of Interest 1 21 Shifting the Picture Off Center esses 1 22 Guard Alarm RMMEEMMEMMMMMM 1 23 Trailing Target Movement Echo Trail 1 26 Displaying Navigation ee eee eese esee eene 1 28 Outputting Cursor Position to External Equipment eese 1 29 Magnifying Long Range Echoes E
41. cho Stretch 1 29 PEMEEEEMMMMMMMMM 1 29 Index 1 31 Displaying Cursor Range and Bearing Cursor Position 1 31 Display Indications 1 32 2 Performance and Interpretation The Radar Wave and Radar 2 1 Target Properties and Radar Wave Reflection 2 2 2 2 Range Resolution eee ee ee 2 3 Bearing Resolution elec ee eee ee 2 4 False e eTo RM 2 4 3 Maintenance Program 3 2 Replacing the Fuse 2 2 REM 3 3 Location of Parts 2 0 RR 3 3 4 Troubleshooting M Precautions RM 4 Troubleshooting Table esee entere raa 4 2 Transmitting With Scanner Rotation Suspended ees 4 3 Installation Precautions 5 1 Scanner Unit Installation 5 2 Display Unit Installation cc scssssesssssssssescscssecsssssssneessessasesesssenearsesaeseseseseeassesesecs 5 8 COMMECTIONS MM 5 10 Nav Data Input Ou
42. dar as you do with your own eyes However under normal atmospheric conditions the radar horizon is 696 greater than the optical hori zon Therefore if the target does not rise above the horizon the radar beam cannot be reflected from the target The distance to the horizon from the scanner under normal con ditions is calculated by the following formula Rmax 2 2 x Vh2 Where Rmax Radar horizon mile h1 Antenna height meters h2 Target height meters Figure 2 1 Radar horizon Target Properties and Radar Wave Reflection Generally larger targets can be seen on the radar display at greater ranges provided line of sight exists between the scanner and target However a large target with poor reflecting properties may not be detected as easily as a smaller target with better re flecting properties For example you might expect a lighthouse to be a good radar target because of its size In actuality the return echo is weak since the conical shape diffuses most of the radiated energy ship whose hull is made of conducting materials such as steel will retum a relatively strong echo On the other hand hulls made from wood or fiberglass return much weaker echoes Vertical surfaces such as a cliff are good targets provided they face the radar Conversely horizontal and smooth surfaces such as mudbanks sandy beaches and gently sloping hills make poor targets because they disperse rather than reflect most
43. el up to the scanner unit varies depending largely on the length of signal cable Dur ing this period the display unit should wait before starting the sweep When the display unit is not adjusted correctly the ech oes from a straight local object for example a harbor wall or straight pier will not M straight edges namely they will be seen as pushed out or pulled in near the picture cen ter See Figure 5 14 The range of objects will also be incor rectly shown 5 15 1 Correct 2 Target pulled inward 3 Target pushed outward Figure 5 14 Examples of improper and correct sweep timings 1 Transmit on the shortest range and confirm that the GAIN and A C SEA controls are properly adjusted 2 Visually select a target which forms right angles harbor wall straight pier 3 Press the MENU key if the menu is not displayed 4 Operate the trackball to select 2 Adjust Sweep Timing and then press the ENTER key 5 Operate the trackball to straighten target selected at step 2 and then press the ENTER key If measurement of blind sector or entry of area of not transmis sion is not necessary this concludes adjustment Turn off the power to finish Measuring Blind and Shadow Sectors 5 16 In some shadow sectors there may not be sufficient intensity to obtain an echo from very small targets even at close range al though a large vessel may be detected at a much greater range in
44. enter or zoom is turned on during echo trailing trailing is restarted Canceling echo trailing Press the ECHO TRAIL key What occurs during trailing Fixed time trailing 1 When the elapsed time clock counts up to the trailing time selected the elapsed time display freezes 2 The oldest portions of trails are erased so only the latest trail equal in length to the trailing time selected is shown 3 Trailing continues For example the one minute trailing time is selected When the elapsed time clock counts up to 60 seconds the elapsed time display freezes at 60 all but the latest one minute of trails are erased and then trailing continues Continuous trailing The maximum continuous trailing time is 99 minutes and 59 seconds When the elapsed time clock counts up to that time the elapsed time display is reset to zero and trailing begins again Adjusting brilliance of afterglow The brilliance of the afterglow can be set for high or low on the Backlight Brilliance menu 1 27 Displaying Navigation Data 1 28 Navigation Navigation data can be displayed at the screen bottom if this radar receives navigation input in NMEA 0183 format Naviga tion data include position in latitude and longitude or Loran C time differences one can be selected on the Data menu range bearing and time to go TTG to both waypoint selected on external navaid and the cursor speed and course I
45. eyboard may be faulty check SPU Board Transmitting With Scanner Rotation Suspended 1 2 3 4 5 6 Turn off the power While pressing and holding down the GAIN control hold at least three seconds press the POWER key Press the MENU key Operate tbe trackball to select 7 Installation Setup 1 and then press the MENU key Operate the trackball to select 4 Ant on Tx and Stop Press the MENU key twice to close the menu 41301 on CRT POWER Board POWER Board PTU 9093 CRT Board See figure below for parts location N Photo No 3165 VR402 V SIZE VR201 H POSITION VR403 V LINEARITY VR202 H HOLD VR4O1 V HOLD VR205 SUB BRIGHTNESS VR204 BRIGHTNESS L204 SIZE CRT Board Figure 4 1 Display unit cover removed top view and location of parts on the CRT Board find SPU Board SPU 9096 N Photo No 3164 POWER SUPPLY Board PTU 8190 MD Board MD 8100 J812 J811 N Photo No 3168 Figure 4 3 Transceiver module bottom view cover removed Circulator HY801 RC 4356 Magnetron 801 0801 5241 RU 8014 IF Amplifier Case N Photo No 3170 Figure 4 4 Transceiver module Scanner Motor B801 RM 8367 Reed Switch S801 RS 1 N Photo No 3167 Figure 4 5 Scanner unit cover opened 5 Installation Installation Precautions HIGH VOLTAGE Stil alive at OFF Discharge before servicing Turn off radar befo
46. f the navigation input includes destination data waypoint posi tion is denoted on the radar display by a dashed ring To turn navigation data on or off Press the NAV key Notes on navigation data NO DATA appears when no navigation data is received or wrong navaid is selected on the menu TTG data is displayed by asterisks when there is no waypoint data lt gt T 2 Waypoint Mark Data Range bearing and time to go to waypoint 0 23 8 Q 100NM Speed and time to go to cursor location Figure 1 20 Typical navigation data display Cursor Position to External Equipment Press and holding down the ENTER key about two seconds Magnifying Long Range Echoes Echo Stretch Watchman Normally the reflected echoes from long range targets appear on the display as weaker and smaller blips even though they are compensated by the radar s internal circuitry The echo stretch function magnifies these small blips in all ranges Two types of echo stretch are available ES1 which stretches echoes in bear ing direction and ES2 which stretches them in both range and bearing directions Turning the echo stretch on or off Press RAIN control Each press changes the echo stretch function in the sequence of ES1 ES2 and OFF ES1 ES2 ap pears at the top right hand corner of the display when echo stretch is on
47. gt BFF Measuring bearing by EBL 1 Press the EBL1 or EBL2 key 2 Operate the trackball to bisect the target with the EBL 3 Check the EBL readout at the bottom left hand corner of the display to find the bearing to the target 6 0 NM 20 Target Cursor shorter dash EBL2 Cursor Bearing Ca BES TRIES Figure 1 10 How to measure bearing by EBL and cursor Erasing active EBL Press and hold down the corresponding EBL key about two sec onds Displaying true or relative bearing The bearing readout for the EBL and the cursor can be displayed in relative or true bearing true bearing requires heading sensor input through the Mode amp Function menu For the N type radar the EBL reference is fixed at true for head up mode and relative for other modes Tips for measuring bearing Bearing measurements of smaller targets are more accurate the center of larger target pips is not as easily identified Bearings of stationary or slower moving targets are more curate than bearings of faster moving targets To minimize bearing errors keep echoes in the outer half of the picture by changing the range scale angular difference becomes difficult to resolve as a target approaches the center of the display Collision Assessment by the Offset The origin of the EBL can be placed anywhere with the trackball to measure range and bearing between any two targets as well
48. he radar display the sweep origin is automatically flipped reset to 5096 radius opposite on the extension of the heading marker passing through the display center If the gyrocompass fails the mode is changed to head up And if speed data fails the mode is changed to north up Own ship moves in accordance with ship s heading data but NMEA course data when it is being fed Adjusting Display Brilliance The BRILL key adjusts the brilliance of the display in sixteen levels including off Each time the key is pressed the newly se lected brilliance appears momentarily at the top of the display for your confirmation Erasing the Heading Mark Menu The heading mark continuously appears on the display and shows your vessel s heading When this mark or the menu obscures a target echo you can temporarily erase them by pressing and hold ing down the GAIN control Release the control to re display the heading mark and menu Tuning the Receiver 1 10 The radar receiver can be tuned automatically or manually and the default tuning method is automatic In automatic tuning the radar is automatically tuned everytime the radar is switched to Tx and the indication TUNING appears during tuning The tuning bar at the top right hand corner of the display shows tuning condition Generally the longer the tuning bar the better the tuning condition however the length of the bar changes with number of radar echoes range and other
49. ings and pulse repetition rate for optimal detection capability in short to long ranges You can select which ranges and pulselength for 1 5 and 3 mile ranges to use through the Mode amp Function menu The range range ring interval and pulselength appear at the top left hand corner of the display Procedure Press the RANGE key Each time the range is changed the newly selected range appears momentarily at the center of the display for your confirmation Tips for selecting range Whennavigating in or around crowded harbors select a short range to watch for possible collision situations If you select a lower range while on open water increase the range occasionally to watch for vessels that may be heading your Way 1 5 Adjusting Receiver Sensitivity The GAIN control adjusts the sensitivity of the receiver It works in precisely the same manner as the volume control of a broad cast receiver amplifying the signals received Procedure The proper setting is such that the background noise is just vis ible on the screen Adjust the sensitivity on the highest range the background noise is clearer on that range 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 be tween desired echoes and the background noise on the display 1 Transmit on long range 2 Adjust the
50. ir work is best left to a qualified technician ADANGER To the service technician HIGH VOLTAGE There are many high tension points in this radar system Take Still alive at OFF Discharge before Special care when approaching the following parts servicing Power supply circuit display unit CRT circuit display unit Modulator circuit and magnetron transceiver unit Motor drive circuit DANGER Turn off the radar before servicing the antenna Turn off radar before servicing scanner Wear safely belt Troubleshooting Table This section provides a troubleshooting table for use by both the user and the service technician Table 4 1 Troubleshooting table you pressed the control panel check fuse Measure input voltage the POWER 4065 not light battery may have between 1 and 2 key to tum discharged terminals of 11301 on the on the radar check FIL Board POWER Board check POWER Board Voltage should be check illumination lamps 12V set 10 2V to 20 3V DC 24V 32V set 20 4V to 41 6 DC See Figure 4 1 for location of POWER Board check CRT heater If lit CRT 15 normal On the CRT Board adjust CONTRAST pot VR101 and BRIGHTNESS pot VR204 On the CRT Board adjust V HOLD pot VR401 and H HOLD pot VR202 check CRT check CRT voltage check CRT Board nothing appears on the display pane
51. itivity For the bandwidth of 12 MHz the length is 45 meters approximately and for the bandwidth of 3 MHz usually on the 6 mile range or larger 12 meters approximately 9500 MHz 8200 MHz Radar receiver bandwidth To show the SART marks only on the radar display detune the radar receiver by turning the TUNE control out of best tuning condition This erases or weakens all normal radar echoes but the SART marks are not erased because the SART response signal scans over all frequencies in the 9 GHz band When the radar approaches the SART in operation the SART marks will enlarge to large arcs blurring a large part of the screen Reduce the sensitivity and adjust the sea clutter control of the radar Table of Contents Foreword EM HMM AE iii Specifications EE DER 1 Operational Overview Control Panel M REEEEMMMMMMMMMMMMMXRBPh8 1 2 Turning the Radar On and Off 1 3 Transmitting Stand by RRRRRRRRREMMMMMMMMMMMMMMMM 1 4 ECONOMY Mode 1 4 Navigation Data Display During 1 4 Selecting Range RRRRRMEMMENMMMNMMMMMMMM 1 5 Adjusting Receiver Sensitivity csssssssssssccescescsssessatserscsecescsssessssteascaceessnasscerersens 1 6 Suppressing Sea Returns A C SEA control ccccccs
52. l lights picture 1 not synchronized check CRT Board but scanner does not rotate If you pressed the STBY TX key after On the Installation Setup 1 menu confirm that Ant on Tx is set to ROTATE check scanner drive gears check scanner motor power circuit check scanner motor 801 targets appear sensitivity indications and with both markers do A C RAIN and A C neither indications nor markers appear noise and targets do SEA off the sweep is not synchronized with scanner rotation sensitivity is poor you l there is no pressed a response key neither noise nor check AMP Board check multicore cable between scanner and display for damage check SPU Board check SPU Board check trigger line of signal cable for short measure magnetron current voltage check modulator circuit Measure magnetron voltage as follows 1 Transmit on max range with scanner rotation suspended See procedure on next page 2 Measure voltage at test point TP854 4 and 86 Board in scanner Voltage should be 7 5 V 0 1 V Replace magnetron if voltage is not within that range check bearing pulse generator circuit in scanner check SPU Board measure magnetron voltage as prescribed above MIC may be out of tune k
53. mperature Scanner Unit 25 C to 70 Display Unit 15 C to 55 Humidity Relative humidity 95 or less at 40 27 8 POWER SUPPLY 10 2 to 41 6 VDC 52W 28W in economy mode or 100V 110V 115V 220V 230V AC 50 60 Hz 1g rectifier required Panel N30 DISTANCE Compass Compass EQUIPMENT LISTS Complete set Twe remas XNI2A RSB 0066 000 085 872 Select one Scanner Unit XN13A RSB 0066 000 085 873 See installation Installation Materials CP03 13001 materials on next page for details Accessories FP03 05300 000 085 767 03 10200 000 085 692 Accessories Hood Assy FP03 02910 008 223 520 FP03 04310 008 411 810 Cap Filter 03 02920 008 224 760 Vii Installation materials Name Signal Cable Assy Signal Cable Signal Cable Assy Signal Cable Assy Power Cable Assy Seal Washer Hex Bolt Hex Nut Flat Washer Spring Washer Slotted Pin G type Packing Spare parts Optional equipment Name Rectifier External Buzzer Heading Data Cable Assembly Cable Assembly EMI Filter Dust Cover Hood w Lens viii RU 3423 000 030 443 MEME OP03 21 3 000 030 097 1 MJ A6SPF0009 100 000 125 236 MJ A6SPF0011 050 000 132 244 Sm MJ A6SPF0007 100 000 125 237
54. nce is approximately 1 0 meters for the standard com pass and approximately 0 8 meters for the steering compass The display unit should be oriented so that you can view the screen while facing towards the bow This will make determi nation of your position easier The mounting location must be strong enough to support the display unit under vibration conditions normally encountered on the vessel If necessary reinforce the mounting location Make sure you allow enough clearance to get to the connec tors behind the unit Make sure you leave at least a foot or so of service loop of cables behind the unit so that it can be pulled forward for servicing or easy removal of the connec tors M10 Bolts 99 Coach Screws gt 2 pes 3P Figure 5 8 Tabletop mounting Bulkhead or overhead mounting 1 Referring to Figure 5 9 change the location of the fixing plate mounting base bottom plate and cover 5 09 Coach Screw M10 Hex Bolt Fixing Plate Mounting Base jy MB x 40 Hex Bolts 2 pcs q Cap 2 pcs 97 M8 x 16 Hex Bolt 4 pcs M3 x 6 Pan Head Screw 4 pcs DISPLAY UNIT M4 x 10 Cosmetic Screw 6 pcs Cover Figure 5 9 Display unit bulkhead or overhead mounting Connections The figure on the next page shows location of connectors on the rear of the display unit Several types of cables with connec tors for connection of external equipment a
55. nct target echoes Horizontal Beamwidth Direction of scanner rotation Target eL o Horizontal Beamwidth Direction of scanner rotation Figure 2 3 Bearing resolution 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 Multiple echoes Multiple echoes occur when a short range strong echo is re ceived from a ship bridge or breakwater second a third or more echoes may be observed on the display at double triple or other multiples of the actual range of the target as shown in Fig ure 2 4 Multiple echoes can be reduced and often removed by decreasing the sensitivity or properly adjusting the A C SEA True Echo LL e _ 11 4 LI Own Ship Target Multiple Echo Figure 2 4 Multiple echoes Side lobe echoes Every time the scanner rotates some radiation escapes on each side of the beam This radiation is called side lobes If a target exists where it can be detected by the side lobes as well as the main lobe the side lobe echoes may be represented on both sides of the true echo at the same range as shown in Figure 2 5 Side lobes show usually only at short ranges and from strong targets They c
56. nd 2 are the same while the menu is displayed 5 Echo Trails 2 P L amp Int Noise 1 Pulselength Adjust brilliance of echo trails Select pulselength for 1 5 and 3 mile ranges 2 Int Reject 3 Noise Reject Select level of interference rejection Select level of noise rejection 3 Nav Data Navigator Select source of navigation data 2 Waypoint 3 Pos Disp Mode Turn waypoint display on off Display position in lat long or Loran TD mh 4 Depth Unit Select depth unit for meter feet or fathom 5 Temp Unit Select unit of water temperature measurement for or F 1 STBY Display Select function at stand by Display ST BY or navigation data or go into economy mode 2 Watchman Turn watchman on off Tx interval is available in 5 10 or 20 minutes 3 Alarm Mode Select condition which triggers guard alarm in target enters guard zone or out target exits guard zone 4 VRM Unit Select unit of measurement for VRM and cursor for nm km or sm VRM unit cannot be selected on N type radar unit is fixed for nm 5 EBL Ref relative for HU and true on other presentation modes Select useable ranges AUTO MANUAL Select automatic or manua tuning To tune manually 1 Select MANUAL by trackball 2 Press the ENTER key 3 While pressing and holding down the GAIN control operate the trackball to tune 4 Press the ENTER key Test controls ROM
57. ner when the zoom function is on To turn off zoom press the key again QD Set cursor where desired 2 Press ZOOM to double range Figure 1 15 Zoom function NOTE 1 The zoom function is inoperative when the display is shifted NOTE 2 Ifthe cursor is not positioned within the current range when the ZOOM key is pressed several beeps are emitted and the outermost range ring blinks twice even if the range rings are off Reposition the cursor and press the key again 1 21 shifting the Picture Center 1 22 Your vessel s position be shifted to view ahead behind your vessel without changing the range or size of targets For the N type radar the amount of shift is maximum 75 of range Operate the trackball to set cursor where desired and then press the OFF CENTER key OFF CENTER appears at the top right hand corner of the display when the picture is shifted To turn off the off center function press the key again Set cursor where desired 2 Press OFF CENTER Vessel s position shifts to cursor location Figure 1 16 Shifting the picture 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 audible alarm sounds and the offend ing target blinks to call the operator s attention Selection of guard zone type The guard alarm can be set to sound when a target either enter
58. nsitive Therefore turn the control fully counterclockwise off when its function is not required 1 19 Suppressing Radar Interference 1 20 Radar interference may occur when near another marine 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 1 14 illustrates interference in the form of curved spokes Interference effects are distinguishable from normal echoes because they do not appear in the same place on successive rotations of the scanner Figure 1 14 Radar interference To suppress radar interference 1 Press the MENU key to display the menu 2 Operate the trackball to select 2 P L amp Int Noise Rej 3 Press the ENTER key 4 Operate the trackball to select 2 Int Reject 5 Operate the trackball to select level of interference rejection and level selected appear at bottom right hand corner of the display 6 Press the MENU key twice to close the menu 7041 vi Enlarging an Area of Interest Zoom The zoom feature allows you to double the size of the area be tween your vessel and any location within the current range to take a closer look at an area of interest without changing the range Select location with the cursor and then press the ZOOM key ZOOM blinking appears at the top right hand cor
59. o the RTB Board inside the scanner housing Mate the 15 and 9 way plugs with jacks J812 and 1611 on the transceiver module respectively Connect the 7 way plug to Jack J853 on the PTU Board Secure the cable between the Board and 7701 with the cable tie as shown in Figure 5 7 6 The black wire of the cable is the ground wire Fasten it to the chassis of the transceiver module with the ground screw shown in Figure 5 7 7 Close the scanner housing cover Display Unit Installation Tabletop mounting 1 Loosen the two M8 x 40 bolts at the front of the dis play unit Remove the fix ing plate 2 Using the fixing plate as a template mark screw loca tions in the tabletop Drill four holes of 12 mm diam eter in the tabletop 3 Secure the fixing plate to the tabletop with M10 bolts nuts and washers 4 Lay the display unit on the Cap 7 fixing plate Secure it with 2 pcs the two 8 x 40 bolts loos ened in step 1 Cover the Fixing bolts with the two cosmetic caps supplied Siting considerations The display unit can be mounted on a tabletop a bulkhead or on the overhead Install it where it can be viewed and oper ated conveniently but where it is protected from being sprayed or immersed in salt or fresh water Compass safe distance The magnetic compass may be af fected if the display unit is placed too close to it because of the magnetic fields generated in the radar The compass safe dista
60. of functions all contained in a rugged plastic case controls respond immediately to the operator s command and each time a key is pressed the corresponding change can be seen on the screen Daylight viewing radar specially designed for small craft and sailing yachts Traditional FURUNO reliability and quality in a compact ra dar Precision 1 2 meter slotted waveguide antenna capable of withstanding 100 knot wind velocity High definition 12 raster scan display Eight levels of target quantization for high target definition On screen alphanumeric readout of all operational informa tion Guard zone alarm watches for targets entering or exiting a guard zone Operates on 12V 24V or 32V DC power supply and con sumes only 52 watts The CRT can be turned off automatically during stand by 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 NMEA 0183 format 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 NMEA 0183 format Target latitude and longitude position can be output to exter nal equipment Transmission can be prevented in a certain area Ask you ser viceman about this feature QMS B Specifications SCANNER UNIT Radiator Polarization Antenna Rotation
61. onochrome CRT effective display area more than 180 mm Range Ring Interval No of Rings os Tos Tes 5 8 6 gt spes je os wr r3 eo eoe positis lese bo Range Resolution Better than 20 m Bearing Resolution 12 within 1 92 within 1 2 Minimum Range Better than 25 m Bearing Accuracy Within 1 Range Ring 0 9 of range or 8 m whichever is the greater VRM Accuracy 0 9 of range or 8 m whichever is the greater Markers Heading Mark Bearing Scale Range Rings Variable Range Marker VRM1 VRM2 Electronic Bearing Line EBLI EBL2 Tuning Bar Cursor Parallel Cursor Alarm Zone Waypoint Mark navigation input required North Mark heading sensor input required Alphanumeric Indications Range Range Ring Interval Pulselength SP MP LP Dis play Mode HU CU NU Interference Rejection IR1 IR2 IR3 Variable Range Marker VRM1 VRM2 Elec tronic Bearing Line EBL1 EBL2 Automatic A C SEA AUTO Stand by ST BY Radar Alarm G IN G OUT G ACKN Echo Stretch ES1 ES2 Cursor Range Bearing or L L Position Echo Trailing TRAIL Trailing Time Trail ing Elapsed Time Navigation Data navigation input re quired Heading HDG heading sensor input required Interference Rejector Built in Output Data TLL target data and RSD NMEA 0183 format ENVIRONMENTAL CONDITIONS Ambient Te
62. onsumption in the economy mode is 28W Navigation Data Display During Stand by Navigation data received from an external navaid can be dis played during stand by Navigation input required You can turn the navigation data display on or off through the Data menu Figure 1 3 shows a typical navigation data display during stand by 7 marh b SPEED Speed m wetter 15 234 n m Trip distance since power Depth m 17 39 Water temperature TO Waypoint bearing Heading Course Time to go to TO Waypoint Bearing to TO Waypoint Range to TO Waypoint QwrT TT 12 34 Z O B M ANG amp 2 34 42 2 LON 138 24 1 386378 1 TO 50096 4 SN 2E Ship s position in latitude and longitude and Loran TDs Cross Track Error Mark di shows direction and amount of error 1 9 0 5 1 Figure 1 3 Typical navigation data display during stand by NOTE 1 Availability of a particular display item depends on incoming data NOTE 2 When Range to Waypoint becomes 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 XTE starts blinking Selecting a Range The range selected automatically determines the range ring in terval the number of range r
63. orm or the deck See the scanner outline draw ing on page D 2 Detach the scanner housing cover from the scanner housing by loosening four fixing bolts The scanner housing cover fitted with the transceiver module can be stored in a conve nient place until the wiring to the scanner unit is accom plished Place the scanner housing on the chosen position and orient it as shown in Figure 5 1 A c Ship s Bow y gt Ship s Bow A CORRECT B WRONG Figure 5 1 Orienting the scanner unit 4 Fasten scanner housing to mounting location a Coat washer and nuts with silicone sealant b Set seal washers to M12 60 hex bolts with the larger diameter of the washers under the bolt heads C Insert bolts and seal washers from inside the scanner hous ing so they will not touch the transceiver module d Fasten the scanner housing to the mounting location with flat washers spring washers and hex nuts as shown in Figure 5 2 Fasten by turning the nut not the bolt to prevent damage to seal washer Coat exposed parts of nuts and washers as shown in Fig ure 5 2 Hex Bolt 12 x 60 Seal Washer Platform Scanner Housing Silicone Sealant Flat Washer Spring Washer Hex Nut Figure 5 2 Mounting the scanner housing Connections Only the multicore cable runs from the display unit to the scan ner unit Make the hole for passing the cable through the bulk head or deck at least 20 mm
64. p 1 menu description 1 1 Turn key beep response on off 2 Alm Sensor Lvl Select level of echo intensity which triggers guard alarm low medium or high 3 Hdg Sensor Select source of heading data magnetic compass MAG or gyrocompass GYRO 4 Ant on Tx Select STOP to halt antenna rotation on transmission 5 Ant Height The STC curve changes with respect to antenna height above the waterline Enter antenna height above the waterline to optimize the STC curve LOW less than 3 meters MED 3 to 6 meters HIGH more than 6 meters 6 Operation Mode Select radar operation mode master or slave 7 Instaliation Setup 2 Select to access Installation Setup 2 menu This concludes operation on the Installation Setup 1 menu Leave the menu open to align heading adjust sweep timing etc on the Installation Setup 2 menu Aligning Heading 5 14 You have mounted the scanner unit facing straight ahead in the direction of the bow Therefore a small but conspicuous target dead ahead visually should appear on the heading mark zero degrees In practice you will probably observe some small error on the display because of the difficulty in achieving accurate initial positioning of the scanner unit The following adjustment will compensate for this error 1 Identify a suitable target for example ship or buoy at a range between 0 125 to 0 25 nautical miles p
65. place the out side edge of VRM1 on the inside edge of target Check the readout to find the range between target and target B EBL VRM 50h 45 0 R 450 R 1 2 3 EBL VRM EBL VRM EBL VRM 45 0 R gH 2 0NM 8 9 EINK 4 5 1 8 1 Bearing Range Figure 1 12 Measuring the range and bearing between two targets by using the offset EBL 1 18 Suppressing Precipitation Returns 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 1 13 shows the appear ance of rain clutter on the display How to suppress rain clutter When only a slight amount of clutter is visible on the dis play raise the A C SEA control setting slightly to distinguish targets from the clutter Inheavy storms or partial clutter adjust the A C RAIN con trol This control splits up these unwanted echoes into a speck led pattern making recognition of solid targets easier Appearance of rain clutter A C RAIN adjusted rain clutter suppressed Figure 1 13 Effect of AIC RAIN control Other uses of the A C RAIN In addition to reducing clutter the A C RAIN control can be used in fine weather to clarify the picture when navigating in con fined waters However with the circuit activated the receiver is less se
66. portant 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 prop erly tightened A maintenance program should be established and should at least include the items listed in Table 3 1 Table 3 1 Maintenance program item Scanner unit fixing bolts Radiator cleanliness Antenna connectors CRT anode and approach Check for tightness and Replace corroded bolts corrosion Apply coat of anti corrosive sealant to new bolts Foreign material salt oil etc on the radiator will cause a considerable drop in radar performance Clean the radiator with a freshwater moistened cloth The only recommended cleaning agent is alcohol Open the scanner unit and visually check all connectors for proper seating and corrosion The CRT will in time DO NOT use chemical accumulate a coating of dust cleaners to clean any part of which tends to dim the the display unit They may picture Wipe the CRT remove paint and markings lightly with a soft cloth High tension on the CRT attracts dust and moist dust will cause poor insulation Have a qualified service technician clean the CRT anode and approach See Figure 3 2 1 year Connectors on rear Check for proper seating See Figure 3 3 panel of display unit and corrosion Replacing the Fuse The
67. re optionally avail able See the optional equipment list on page viii for details Scanner connection Connect the multicore cable from the scanner unit to connector DJ 1 on the rear of the display unit Power connection This radar is designed for 12 24 or 32 volt battery systems No modification is required except change of fuse A piece of gear of this quality deserves to have a circuit breaker dedicated to it alone The size of the wire feeding power to the unit should be no less than AWG 14 2 0 mm power cable comes with the radar connect it to the power connector on the rear of the display unit Ground connection Run heavy ground wire from the grounding terminal at the rear of the panel of the display unit to the nearest grounding point on the boat Consult with a qualified electrician if you are uncertain of where the grounding points on your vessel are Gyrocompass or heading sensor connection If an synchro or DC step type gyrocompass is installed on the vessel the true bearing of ship s heading of the cursor and of the EBL may be displayed on the radar display gyro cable with connector and an AD Converter AD 100 are optionally supplied Remove the HDG jack cap on the rear panel to expose the HDG jack Mate the connector with this jack The C 2000 heading sensor can be connected instead of a gyro compass NOTE Gyrocompass or heading sensor will be selected on the Installation Setup 1 menu
68. re servicing scanner Wear safety balt ELECTRICAL SHOCK HAZARD cathode ray tube in the display unit uses a high tension of several thousand volts Unqualified personnel should not open the display unit and the transceiver module in the scanner unit Wear a safety belt Wear a safety belt when working on the scanner unit Scanner Unit Installation Siting considerations The scanner unit is generally installed either on top of the wheelhouse or on the radar mast on an appropriate platform It should be placed where there is a good all round view with as far as possible no part of the ship s superstructure or rig ging intercepting the scanning beam Any obstruction will cause shadow and blind sectors A mast for instance with a diameter considerably less than the width of the scanner will cause only a small blind sector but a horizontal spreader or crosstrees in the same horizontal plane as the scanner unit would be a much more serious obstruction you would need to place the scanner unit well above or below it It 1 rarely possible to place the scanner unit where a com pletely clear view in all direction is available Thus you should determine the angular width and relative bearing of any shadow sectors for their influence on the radar at the first opportunity after fitting The method of determining shadow and blind sectors is shown later in this chapter The scanner unit should be mounted as high as possible on
69. referably near the heading mark To lessen error keep echoes in the outer half of the picture by changing the range Also be sure the zoom and off center functions are off 2 Operate the trackball to select 7 Installation Setup 2 on the menu display and then press the ENTER key INSTALLATION SETUP 2 Select item and option by trackball 1 Align Heading 2 Adjust Sweep Timing 3 On Hours 000001 5H 4 Tx Hours 000000 3H 5 Dead Sector 000 000 Press to temporarily hide menu Press MENU for inst setup 1 Figure 5 13 Installation setup 2 menu 3 Operate the trackball to select 1 Align Heading and then press the ENTER key EBL appears on the display 4 Operate the trackball to bisect the target selected at step 1 with EBL1 and then press the ENTER key 5 Asafinaltest move the boat towards a small buoy and con firm that the buoy shows up dead ahead on the radar when it is visually dead ahead Adjusting Sweep Timing The radar measures the time required for a transmitted echo to travel to the target and return to the source The received echo appears on the display based on this time Thus at the instant the transmitter is fired the sweep should start from the center of the display sometimes called sweep origin A trigger pulse generated in the display unit goes to the scanner unit through the signal cable to trigger the transmitter magne tron The time taken by the signal to trav
70. rkers WER Function at stand by can be Key selected through the menu After 2 min and 30 sec 3 Figure 1 2 Display unit showing warmup sequence Turning off the radar Press POWER and STBY TX keys together Transmitting Stand by Economy Mode Transmitting After the power is turned on and the magnetron has warmed up ST BY Stand By appears at the screen center In stand by the radar is available for use at anytime but no radar waves are being transmitted Press the STBY TX key to transmit When the radar is transmit ting any echoes from targets appear on the display This radar displays echoes in eight intensity levels according to echo strength Each time the radar is powered it begins operation with last used settings for echo stretch menu display mode tuning method automatic or manual range display brilliance echo trail pic ture off center EBL VRM A C SEA automatic or manual and guard alarm Stand by 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 ST BY or navi gation data or goes into the economy mode depending on menu setting More on menu operation later The CRT can be set to automatically turn itself off through the Mode amp Function menu when in stand by to reduce power consumption This feature is called the economy mode Power c
71. s away from the equipment Magnetic fields will distort the picture and can cause equipment malfunction Be sure the unit is well away from equipment which gives 01 magnetic fields speaker power transformer etc Locating a Ship or Survival Craft in Distress SART SART background The SART is required on vessels of 300 GT and above by the 1974 SOLAS Convention as amended in 1988 GMDSS Performance standard is specified in IMO Resolution A 697 17 SART activating conditions The SART should operate correctly when interrogated at a distance of up to at least five miles bya navigational radar complying with resolutions A 477 XII and A 422 VID and 936 with an antenna height of 15 meters It should also operate correctly when interrogated at a distance of up to 30 miles by an airborne radar with at least 10 kW peak output power at a height of 3 000 feet How SART works Upon receiving a radar signal from a rescue party the SART automatically transmits a series of twelve frequency sweeps at a frequency between 9200 0 60 MHz and 9500 MHz 0 60 MHz The radar will represent twelve SART marks during one sweep cycle on the screen See the figure below Screen When SART is distant Screen B When SART is close Radar antenna beamwidth Position of SART SART pulsewidth Sweep time S95 100 us The length of a SART mark depends on the radar s receiver bandwidth and sens
72. s or exits the guard zone You can select which type of guard alarm you want through the Mode amp Function menu In alarm The alarm sounds on targets entering the guard zone appears at the top right hand corner when the In alarm 1 15 Se lected Qut alarm The alarm sounds on targets exiting the guard zone G OUT appears at the top right hand corner when the Out alarm is se lected This alarm is not available on the N type radar DASHED LINE no alarm SOLID LINE alarm sounds np Pull 2 H H H Fa 5 a Ff D E lt Guard Z x Zone E M anant HEEL IN ALARM OUT ALARM Figure 1 17 In and out alarms To select guard zone type 1 Press the MENU key and then select amp Function by operating the trackball and pressing the ENTER key 2 Select 3 Alarm Mode and In alarm on target entering zone or Out alarm on target exiting zone by operating the trackball 3 Press the ENTER key 4 Press the MENU key twice to close the menu 1 23 1 24 Setting guard zone 1 Mentally create the guard zone you want to set 2 Operate the trackball to set the cursor on point A or B Press the GUARD ALARM key G IN G OUT with asterisk blinking appears at the top right hand corner of the display See Figure 1 18 2
73. to attempt the operation in anything other than very smooth water with little wind Another method is to observe the shadow sector against a background of sea clutter Any shadows will show as dark sectors in the clutter See Figure 5 15 Note that a shadow cannot be fairly estimated in heavy clutter as echoes from either side of the sector may be spread into it and give an illusion that objects in the sector are being observed Nor can it be satisfactorily determined in confined waters be cause of the probability of indirect false or multiple echoes be ing produced from nearby building or other vessels Shadow caused by mast Figure 5 15 Appearance of a shadow sector on the display Blind Sector Figure 5 16 Sample blind and shadow sectors Preventing Transmission in an Area 5 18 When the antenna is installed at a close distance in front of the wheel house and this presents a rf radiation hazard the radar should be set to not transmit within this area Some authorities require this This feature can also be used to prevent transmis sion in a blind or shadow sector The maximum sector is 270 Entering area of no transmission 1 Display the Installation Setup 2 menu 2 Operate the trackball to select 5 Dead Sector and press the ENTER key 3 While monitoring the display operate the trackball to enter start of dead sector Press the ENTER key 4 Operate the trackball to enter end of dead sector
74. tput 5 12 Checking the Installation 5 12 Adjustments on the Installation Setup 1 Menu eseese 5 12 Aligning Heading 5 14 Adjusting Sweep Timing 5 15 Measuring Blind and Shadow Sectors 5 16 Preventing Transmission in an 22 5 18 Adjusting Magnetron Heater Voltage 5 19 List of Outline Drawings amp Schematic Diagrams D 0 Ph P Foreword FURUNO Electric Company thanks you for purchasing the FR 7111 Marine Radar We are confident you will discover why the FURUNO name has become synonymous with quality and reli ability For over 40 years FURUNO Electric Company has enjoyed an enviable reputation for quality and reliability throughout the world This dedication to excellence is furthered by our exten sive global network of agents and dealers Your radar is designed and constructed to meet the rigorous de mands of the marine environment However no machine can perform its intended function unless properly installed and main tained Please carefully read and follow the operation and main tenance procedures set forth in this manual We would appreciate feedback from you the end user about whether we are achieving our purposes Thank you for considering and purchasing FURUNO Features The FR 7111 has a large variety
75. y are not direct echoes Target Heading Mark True Echo Direct Path Scanner Indirect Path Obstruction Indirect Echo mast funnel etc Target Heading Mark Direct Path True Echo ing Indirect Path Indirect Echo Indirect Echo 22 Figure 2 7 Indirect echoes 3 Maintenance Precautions HIGH VOLTAGE Still alive at OFF Discharge before servicing gt DANGER Tum off radar before servicing f scanner Wear safety This chapter tells you how to keep your radar in good working order Before reviewing this chapter please read the safety infor mation which follows ELECTRICAL SHOCK HAZARD This equipment uses high voltage electricity which can endan ger human life At several places in the unit there are high volt ages sufficient to kill anyone coming in direct contact with them While the equipment has been designed with consideration for the operator s safety precautions must always be exercised when reaching inside the equipment for the purpose of maintenance or service For this reason only qualified personnel totally fa miliar with electrical circuits and service manual should work inside the display unit or scanner unit Turn off the radar before servicing scanner unit Turn off the radar before servicing the scanner unit Maintenance Program Period 3to6 months 6 months to 1 year Regular maintenance is im

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