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Furuno FR-7010D User's Manual

1. Relative pearing Relative inar Ing T True bearing T True bearing Fig 27 Bearing Measurement with Cross Hair and EBL ensure accurate bearing measurement keep in mind the following points 1 Bearing measurements of sinaller targets pips are more accurate the center of larger target pips is not as essily identified 2 Bearings of stationary or slower moving targets are more accurate than bearings of faster moving targets 3 To minimize errors of bearing you should generally keep echoes in the outer half of the picture by changing the range scale angular difference becomes difficult to resolve a target approaches the center of the CRT 32 REDUCING OR ELIMINATING INTERFERENCE Basically there three types of interference which hinder radar reception sea clutter due to echoes off waves mentioned earlier precipitation clutter and interference from other shipborne radars operating nearby and on the same frequency band This radar can eliminate or reduce these types of interference Precipitation Interference and or RAIN ETC The vertical beamwidth of the scanner is designed to see surface targets even when the ship is roling However this design also has its disadvan tages rain storms snow or hail are detected in the same manner as normal targets Precipitation clutter is easily recognizable by its wool like appearance on sereen see Fig 28 When this type of interference ob
2. and f press v O j Se 1 9 Move cross hair to point C D Asterisk Asterisk Guard zone fixed disappears blinks EN UU Press e again x MM M 4 3 Fig 30 Setting Guard Zone USING THE CURSOR This unit incorporates an electronic parallel cursor The parallel cursor is comprised of a series of lines parallel to the line inscribed through the Screen center and it is used for maintaining a constant distance between own ship and a coastline or a partner ship Press the touchpad to display the cursor Roll the trackball to the right or left and the cursor rotates clockwise or counterclockwise To erase the cursor press and hold the touchpad for two to three seconds Note 1 The range selected automatically determines the number of parallel cursors Note 2 To control other functions with the trackball while the cursor is displayed press the touchpad again 36 SHIFTING THE DISPLAY The own ship s position can be shifted to any position within the range in use See Fig 31 1 The primary advantage of the shifted off center display is that for any particular range setting the view ahead behind or on the sides of own ship can be extended without changing the range in use Procedure Valid Sereen Area 1 Place the cross hair on the L L position to where you want to shift your own ship s po
3. 2 V dd AYJd ININNL N38 ON SNINOL pm 8 vas 2 NIVA 2 V 6 28 NO s re yon t AVN OL Er WA Hy 7 VNEX W z gt 1NJTYAINDI LX 01140 256LL 310N 22 00 S A tool _ 2H09 0S Ot 9 8 2 Lj JVAOEC 022 00L 00L W OH fama CFIHOLOK HA 8 151 DNISV38 NU 9LII9M313510 m VIII9M31951 Nya X I x gH au eyr 08 V 4 tax w ML mt s ri NI AU s gt k 310N E 310N L 0 gated ani Vi GO fit SNIVW S diHS 11020 NOV Zaye L__ I INOITdO 8313112938 9 I gt IHA Bo gt gt 1 B INOLLdO CERLE Ob 90 02 S AA 20 00 20 WOE XVAHACZIZ ILZ LINN H3NNV3S WOL LEG9 MY te ypa LINN 14610 dg Me Bt FURUNO 4 gt 12 k gt ANT 12V 6 gt 40V 4 gt 12V 8 gt TXK 9 gt TXIP i 10 33V L2 SHP 032 SHP 012 PTU 7875 PTU 7875A 034S ti 3 3300 V 746 V r Lo CR3 MA654 TLP521 1Y HP 2 gg SN8S 500 U2 D R5 27 T1 RT 7846 1 R4 0 33 1 or 39k 56k 2SK736 1 220 7 7 C 220 50
4. For Scanner 000 864 131 Unit Mounting 000 864 261 Remarks Remarks FGBO 10 125VAC 000 549 065 100 105 600 1 For bulkhead or overhead mount 2 03 038 1033 Q ty Remarks External Buzzer 0P03 21 000 030 097 Power Cable VV S 2 0x2C 000 104 818 1 4 Dust Cover 03 038 9001 000 801 826 For display unit Rectifier 5 NMEA Cable 2250021 000 109 517 Connector fitted 5m 22S0022 000 109 506 Connector fitted 8m 6 Gyro Cable H Antenna Bracket X Band MIC RU 8014 000 115 556 RF amp built jn For sallboat PRINCIPLE OF OPERATION The term RADAR is an acronym meaning RAdio Detection And Ranging Although the basic principles of radar were developed during World War II primarily by seientists in Great Britain and the United States the use of echoes as an aid to navigation is not a new development Before the invention of radar when running in fog near a rugged shoreline ships would sound short blast on their whistles fire a shot or strike time between the origination of the sound and the returning of the echo indicated how far the ship was from the cliffs or the shore The direction from which the echo was heard indiested the relative bearing of the
5. 10 FIXING HOLES Weight 8kg Fig 6 Scanner Unit Outline Drawing 4 After making sure that the vent tube is in the correct position fix the radome base to the mounting surface with the four M10 x 25 hex bolts flat and spring washers supplied as the installation materials Optional Antenna Bracket Installation For Sailboat Wiring and Final Preparation of Scanner Unit 5 Run the interconnection cable from the display unit to the seanner unit A Setting Up Antenna Bracket A hole of at least 20mm 3 4 dia must be drilled through the deck or bulkhead for cable entry After the cable is passed through the hole a sealing compound should be applied to this hole for waterproofing In order to minimize the chance of picking up electrical interference avoid where possible routing the interconnection cable near other onboard electrical equipment Also avoid running the cable in parallel with power cables Remove the cable clamping plate by loosening four M4 screws and two gaskets at the radome base See Fig T 7 Pass the cable through the hole at the bottom of the radome base Three plugs are provided on the end of the interconnection cable for connection inside the scanner unit B Fixing Radome To Platform Pd Fig 7 Cable Connection and Grounding 8 Secure the cable with the cable clamping plate and gaskets Ground the shield and vinyl cables by using one of the fixing serews for the cable clamping plate a
6. A as a dotted line B as a dashed line Fig 50 Ramark Signal Appearance 50 MAINTENANCE GENERAL Satisfactory operation of the radar depends in large measure on periodic maintenance as outlined below CAUTION DISCONNECT POWER BEFORE PERFORMING ANY MAINTENANCE PROCEDURES 1 Keep the equipment as free as possible from dirt dust and water splashes 2 Inspect whether the screws securing the components are properly tightened 3 Inspect the connection at the rear panel SCANNER UNIT Radome Wipe the surface of the radome with a clean soft cloth Check that there is no dirt or caked salt on the surface A heavy deposit of dirt or caked salt on the painted surface of the upper radome will cause a considerable drop in radar performance Do not use chemical cleaners except for alcohol Check for cracks or deterioration of the rubber packing and replace it if necessary Do not paint the surface of the radome Mounting Check that the radome base and the radome cover fixing bolts are secured tightly DISPLAY UNIT Cleaning the sereen The face of the cathode ray tube will in time accumulate a coating of dust which tends to dim the picture Clean lightly with soft cloth flannel or cotton moistened with alcohol or cleaning fluid if desired Do not use excess pressure you may seratoh the surface Fuse replacement To protect the equipment from serious damage a 10A fuse is provided on the rear panel The fu
7. Valid Screen Area Note If the cross hair is placed beyond the valid sereen area namely the range use when the touchpad is pressed successive beep tones are generated and the outermost fixed range ring flickers twice even if the fixed range rings are turned off telling you that the eross hair should be placed within the range in use 2 3 Press the touchpad again to cancel ZOOM ities this funetion The zoom function can also 1622109 on be cancelled by pressing the touchpad changing the range screen center D 3 Fig 33 Zoom Function 38 PLOTTING This function plots the movement of other ships relative to your own ship on the sereen Press the touchpad and plotting of moving targets takes place at intervals of 15 seconds indicator PLOT and the time elapsed after starting the plot operation are displayed at the upper right hand side of the sereen counting up to 99 minutes and 59 seconds If the touchpad is pressed again within 10 seconds the plotting interval changes to 30 seconds and 30S is displayed at the same place Further pressing it successively within 10 seconds changes the plotting interval in the following sequence 1M 3M 6M no display 305 Indicator on the sereen Press the touchpad again after 10 seconds passed and the plot function is canceled and the normal radar picture is restored if the 5 touchpad is pressed during this ope
8. factors such distortion from beamwidth and pulselength make identification of specific features difficult However the following may serve as an aid to identification 1 High steep rocky and barren landmasses provide good reflecting surfaces 2 Low vegetation covered lands make poor radar targets 3 Submerged objects do not produce echoes 4 Mud flats marshes sandspits and smooth clear beaches make poor targets because they have almost no area that can reflect energy back to the radar 5 Smooth water surfaces such as lagoons and inland lakes appear as blank areas on the display smooth water surfaces return no energy 6 Although you might expect an object as large as a lighthouse to be a good radar target in actuality the return echo is weak since the conical shape diffuses most of the radiated energy SHIP TARGETS A bright steady clearly defined image appearing on the display is in all likelihood the target pip of a steel ship There are several clues which can aid you in identification of a ship Check your navigational position to overrule the possibility of land Land and precipitation echoes are much more massive in appearance whereas the target pips of ships are relatively small The rate of movement can eliminate the possibility that the pip is an aircraft A target pip may brighten and become dim due to changes in aspect etc In most cases however a pip will fade from the display only when the range be
9. the fixed range ring interval this value appears at the second top left corner of the and judge the distance of the echo from the inner edge of the nearest ring For example the 12nm range scale has six fixed range rings each at a 2nm interval Therefore if a target is positioned close to the 5th ring from the center of the display the range to the target would be 10nm To obtain a more accurate reading of the distance to a target the cross hair or the VRM and the cross hair should be used Now try measuring the range of the same target pip with the cross hair and the VRM in this order Using the trackball locate the intersection of the cross hair on the inside edge of the pip Now you ean read the range at the first lower center of the screen Next press the touchpad The VRM is presented on the screen as a dashed ring so as to distinguish it from the fixed range rings and its range is shown at the lower right hand side of the screen The range unit measured by the cross hair and or the V RM ean be changed between NM nautical mile and KM kilometer by pressing the LL touchpad while holding down the touchpad The range to the cross hair varies with trackball operation while the V RM and its indieator remain on the sereen until the VRM is reset Range in Use Fixed Range Ring Interval Fixed Range Rings Target Pip Fig 25 Range Measurement with Fixed Range Hings Target Pip Variable Range Cross Hair Ma
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11. 2 Ambtent Temperature 3 Humidity POWER SUPPLY amp POWER CONSUMPTION 10 2VDC 40 0VDC 50W Vibration Freq Better than 29m 0 9 or 8m whichever is the greater 0 9 or 8m whichever is the greater Heading Mark Bearing Scale Range Ring VRM EBL Tuning Bar Cursor Alarm Zone Cross Hair WP Mark Option Range Range Ring Interval EBL VRM Interference Rejection IR ST BY Rain Clutter Rejection FTC Echo Stretch ES Radar Alarm GUARD Plotting Interval Timer Bearing Range to Cross Hair ZOOM GYRO Option Nav Data Option Built in Total Amplitude 1 to 12 5 Hz 12 5 to 25 Hz 25 to 50 Hz Scanner Unit 25 C to 70 C Display Unit 15 C to 55 C Relative humidity 95 or less at 40 C 100 110 220 230VAC 50 60Hz 12 rectifier required COMPASS SAFE DISTANCE Display Unit Scanner Unit Standard Compass Steering Compass 0 6 m COMPLETE SET um pue eee 2 Display Unit RDP 079 S 000 088 611 12 5 kg 3 Installation CP03 06400 000 083 066 1 set w 10m Sig Materials _ Cable Assy Spare Parts SP03 05300 000 080 915 INSTALLATION MATERIALS Type Code No Remarks HS16P 2 000 503 281 1 For Power 10m Signal Cable Assy 50 5 008 239 060 Select one Connectors 008 239 070 fitted 15m 603 239 080
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14. YZ Y LOWYYLHSW 1023 2021 1 1SYH1N02 2 9 dy 244 099 aG 21 a 04 940251 pou 1013 cou 05 1019 L 030L 69 69 1 0 1010 F z 6980L 23 XI y022 9001 CH t L1 2 0391A 094 06 06V n 940251 zota M0L 5 cory Q Cy lg T 012 mom REMARKS 1 gt Vccl 5V 3 gt X 8 gt Xt EUA FTF814 292 Ib TRACKBALL C3327 K03 A FURUNO ELECTRIC CO LTD Fr amp MATERIAL QTY TITLE DWG NO t kg SCALE WEIGHT R 01 02 DN6851 THIRD ANGLE PROJECTION SEP ra FF ED 7 89 CHECKED A 7 APPROVED 70100 70400 71000 MODEL 1830 1930 1940 15 O2 2iHL2313 ONNYNA 0 0M 6LCC ONSMQ 22220 MMV 909 068L 13004 M4 0 88544 41 000 00 0 94 096 066L 09 130001 9 I mE E 086 13004 1 0 5 2654 3 00L0L 94 OESL 0SLI 0EL 13004 076 1300 L09 7300W K E 00102 54 n r 2 dildi ldWV di vee ose 8 8 0501 4 A0S Jd000L W 8544 41 UE 3S M3HLO 0910M 5531 0 S3IHN3H NI IINYLINONI ONY WE COL 3n 13004 SOVYV4 MI ONVLIDVdV2 A9 L SWHO NI 31MV15I538 ux 8 amp 06 L 1300 HAUL dfl amp AC 9 OIX TT WONXPSEA 09 L T3004 00104784 ONY OESL OELE TACOW
15. a navigation chart A radar cannot see through a mountain in the path between your boat and the harbor nor can it see a small boat directly behind a large ship since both the mountain and the larger vessel effectively shield the radar from the desired target To aid you in target identification the echoes appearing on the display are quantized in four levels according to their intensity The brightest intensity echoes are probably from steel ships or piers or other good targets Poor targets for example wooden boats appear in the weakest intensities The ability to interpret a radar picture comes through practice and Practice should be done during clear weather in daytime since you can compare the picture with what you actually see around you Go to an area you are familiar with and compare the way coastlines buoys and other targets are displayed on the screen and the way they are drawn on a navigation chart To observe the movement of an echo in relation to your position try running your boat at various speeds and headings LAND TARGETS Landmasses are readily recognizable because of the generally steady brilliance of the relatively large areas painted on the display Knowledge of the ship s navigational position will also tell you where land should be On relative motion displays this radar landmasses move in directions and at rates opposite and equal to the actual motion of your own ship Various 43
16. against the mast or mounting and is free of interference from running rigging 5 Check that the cable gland or entry on the deck is waterproof if provided 6 The power connections to the battery are of correct polarity 7 Check that the plugs at tbe rear of the display are inserted correctly and are secure 8 Carry out the following adjustment after the above checks 10111 11 u 15 Now is the time to turn on the unit and carry out the necessary tuning and presetting adjustments INITIAL PROCEDURES 1 Press the touchpad on the display unit and the control panel will _Hght up In approximately 2 minutes and 30 seconds the message ST BY will appear at center of the screen While this warmup is in process pry off the VR panel on the front panel of the display unit See Fig 19 This will expose the potentiometers for post installation adjustments Push in the front panel TUNE control and release it to bring it out Set the control to 12 o clock the GAIN control at 2 o clock and the A C RAIN A C SEA controls at fully counterelock wise 2 When the sereen indicates ST BY press the touchpad The radar will start transmitting on the 3 mile range and you will probably see a number of targets around you even though the gain tuning and other adjustments have yet to be optimized Press the G4 touchpad three times so that the radar is on the 24 mile range Bring up the GAIN control until a small amount of nois
17. and vertical respectively CRT FILTER Board FIL 7876 POWER SUPPLY Board PTU 7875 N Photo No 2522 Fig 51 Display Unit Top View 59 IMP JMP1 and JMP3 are open SPU Processor Board D SPU 7880 Photo No 2620 Fig 52 Display Unit Side View Heading Mark Key C 5801 Magnetron V801 MIC MD Board Wl IF Amp Board N Photo No 2574 LI I IL I I Scanner Motor Fig 53 Scanner Unit Inside View 56 SCHEMATIC DIAGRAMS Title INTERCONNECTION DIAGRAM 3327 01 DISPLAY UNIT C3327 K01 PTU 7875 POWER SUPPLY C3319 K02 ADJ 8147 PRESET CONT POT ASSY ADJ 8147 C3327 04 5 TRACKBALL FUA FTF814 C3327 K03 MG 1252SFR IF AMPLIFIER TF 7758 C3328 K05 3319 05 C3319 K07 OUTLINE DRAWINGS Title Type Dwg No Page 1 RADAR DISPLAY UNIT RDP 079 C3327 601 D 1 nm RADAR SCANNER UNIT RSB 0034 C3319 006 D 2 5 0 G11 OD DINLDATa ONNYNA O LOmM LZEED 00102 43 00 0 95 LINA AV ldSIG gt 0 50 25 L H S Jn ESELI 6 1 jyuoos zo Of SNIVW SdlHS ot EC In 05 3101 SEL 9184 18 1 256 5 I e 05 41 25612 05 4102 561710 VOL L5CL gt b gt 282 X ad lt
18. and a jack may be seen Mate the connector with this jack Fabrication of the other end of the cable and connection to the A D Converter are given in the Operator s Manual for AD 10S Publication No 4280 External Navigational Receiver Connection Option If your navigation receiver has NMEA 0183 or FURUNO CIF format the own ship s position in latitude longitude ship s speed and the range bearing to waypoint may be sent to this radar and be seen in the bottom text area An NMEA eable fabricated with a connector is optionally supplied Remove the NMEA connector cap on the rear panel and a jack for NMEA 0183 may be seen Mate the connector with this jack Fabrication of the other end of the connection cable should be left to a competent service technician because it is difficult to find the point to be connected For service technician J1352 1 2 No connection 31352 3 RD Hot 41352 4 RD Cold CHECKING THE INSTALLATION After completing the installation it is a good idea to recheck to ensure that all the steps of the installation were accomplished in accordance with the instructions Use the following check list Table 1 Installation Cheek List b i on Check Items 1 The vent tube on the radome base is on the side of the stern direction correctly 2 Four radome base fixing bolts are fully tightened 3 The connection eable is waterproof at the radome base 4 The cable is securely retained
19. movement of ship B is approximately 66 5 whereas the operator aboard ship B will determine that the relative movement of ship A is approximately 238 These figures were obtained using a maneuvering board B Bears 105 Dist 5 6 nm A Bears 285 Dist 5 6 nm B Bears 135 Dist 3 9 nm A Bears 315 B Bears 179 Dist 3 9 nm Dist 4 1 nm Bears 0019 Dist 4 1 Fig 48 Relative Motion vs True Motion Assessing the Risk The moment an echo appears on the sereen its range and relative bearing should be measured and its true or magnetic bearing noted This is best done on a chart or plot Collision risk can be assessed by carefully watch ing the true or magnetic bearing of an approaching vessel If the bearing of the target does not appreciably change a possibility of collision may exist You should take proper action in accordance with the Regulations for Preventing Collisions at Sea 49 AIDS NAVIGATION Various aids have been developed to aid the navigator in identifying radar targets RADAR BEACONS Radar beacons are transmitters operating in the marine frequency band which produce distinctive indications on the radar displays of ships within range of these beacons There are two classes of beacons racon and ramark Racon is an omnidirectional transmitter which emits a distinctive signal when triggered by the pulse from a ship s radar Both range and bearing to the target can be ex
20. with the information tabulated below We apologize for the inconvenience Items to be added Type _ Code Q ty Remarks 10A 125 000 104 815 2 for 12VDC ship s mains 2 Fue 25 000 112 785 2 for 24 32VDC ship s mains Type Code No Q ty Remarks 1 Fuse FGBO 10A 125VAC 000 549 065 FGBO A 5A 125VAC 000 549 064 for l2Vdc mains for 24 32Vdc mains Fuse replacement To protect the equipment from serious damage a 10A for 12Vde mains or 5A tor 24 32Vdc mains fuse is provided on the rear panel The fuse protects apainst overvoltage reverse polarity of the ship s mains or internal fault of the equipment If the fuse has blown first find the problem before replacing it with a new one A fuse rated for more than 10A or 5 must not be used since it may cause serious damage to the equipment OVER FUSING WILL VOID WARRANTY Fuse Exchange For 24 32VDC Power Supplies The display unit is shipped with a 10A fuse F1351 fitted in the fuse holder on the rear panel This fuse is for use with 12VDC power supply For 24VDC or 32VDC power supplies please exchange the fuse with the 5A fuse supplied CHECKING THE INSTALLATION C 8 Check that fuse F1351 on the rear panel is 10A for 12Vdc or SA for 24 32V dc Pertinent pages M1830 FR M1930 7010 7040 0 7 SPECIFICATIONS PRINCIPLE OF OPERATION INS
21. yourself beside the vietim s head and pinch his nose by your thumb and forefinger to prevent air leakage Insert the thumb of your other hand between the vietim s teeth and lift his chin up Then place the arm the one closing the victim s nose on the victim s forehead and press the head down so that the victim s head is given a maximum backward tilt with the chin prominent and the neck bent back Seal _ the victim s mouth with your mouth and N blow therein about half of the deeply AE inhaled sie every tine After exhaling TN turn your head to watch for a chest Lem aka ss P NN contraction whilst inhaling deeply in NN MN 1 readiness for the next blowing Repest the gt nee movements faster for the first 1 to 2 minutes and 12 times per minute thereafter RADIATION HAZARD Radiation emitted from the scanner van be harmful particularly to the eyes To avoid harmful radiation ensure the radar is set to either ST BY or OFF before beginning work on the scanner Under no circumstances should you look directly into the scanner from s distance of less than 2 feet when the radar is in operation A WORD TO FURUNO FR 7010D OWNERS Congratulations on your choice of the FURUNO FR 7010D Radar We are confident that you will enjoy many years of trouble free operation with this fine piece of equipment For over 40 years FURUNO Electric Company has enjoyed enviable reputation for quality and reliability t
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23. 2 5 kg reinforce the mounting place if necessary Make sure you allow enough clearance to get to the connectors behind the unit 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 connectors The recommended clearances for servicing ease are given on page D 1 Tabletop Mounting 1 Remove two M8x40 bolts fixing the display unit to the mounting cradle 2 Drill four mounting holes 12mm dia through the tabletop 3 Secure the mounting cradle to the tabletop by using M10 bolts nuts and washers 9mm radius coach screws may be substituted for the M10 bolts 4 Place the display unit on the mounting cradle and secure them at the front of the display unit with two bolts removed at step 1 M10 Bolt or 69 Coach Screw 8 40 Hex Bolts 2 pcs Mounting Cradle Fig 9 Tabletop Mounting 12 Bulkhead Overhead Mounting 1 Take the top cover off by loosening six M4X10 cosmetic screws 2 Loosen two M8x40 hex bolts at the front of the display unit and the mounting cradle comes free Secure the mounting cradle to the bulkhead overhead 3 After disconnecting flying connector P J1354 loosen four M6x16 hex bolts and separate the ramp base with the bottom plate from the display unit 4 Loosen four M3x6 serews to separate the bottom plate from the ramp base J Loosen the lock nut for the SCANNER switch on the ramp base and tu
24. 4 DISTANCE 5 221A amp ERE STANDARD eit T STEERING ATP OT FR 7010D FR 7010D 7040D 7100D MODEL 1730 1830 NAME MATERIAL 9 LV DWG REMARKS an JAM as f d APPROVED 7 AKANO L 3 Zg rh 71 JAN SP R RADAR SCANNER UNIT ap RS 2 APPROVED 7 THIRD ANGLE PROJECTION TITLE L 4 1 amp 87RBBAL ST m a AZ SALTO to 05272 RADAR DISPLAY UNIT 125 _ 9927 001 SINUM g E 8 3319 006 FURUNO ELECTRIC CO LTD FURUNO ELECTRIC CO LTD DRAWN OR a
25. 750 other Than M1750 1304 C1305 1 50 25 94 1302 ALL RESISTANCE IN OHMS 0 25W CAPACITANCE IN MICRO FARADS UNLESS NOTED OTHERWISE 2 BSH RH RESISTOR FOR ADJUSTMENT tn gt lt Ln T D IC I4304 4 50 un n 2 m m B N N T KU FROM FIL PCB MODEL 1730 1750 1760 FR 7010D 7040D i NOTE 1 4260 025W X J 7 79WuF MODEL 1830 1930 1940 M REMARKS TF 4 yf N 088 O 07107 0 gt APPROVED 7 TITLE im PTU 7875 RB gm POWER SUPPLY CHECKED Y ndm 3319 02 FURUNO ELECTRIC LTD VR401 2k R1 8 2k 2 gt TUNING R2 15k 42 VR601 5k gt A C RAIN l 3 VR602 5 1 2 R3 82k gt A C SEA gt GAIN TUNING IND gt TUNING PEAK CM a J23 Re CR 94 I i SLP 384H 51 A 2 x3 V 3 gt 42V VRS 10k 2 3 TO LED PCB LED R1 gt IND gt GND BEF TRIG 5 gt 12V gt 33V BUZZER gt HD1 y HD2 gt HD3 HD4 gt gt ADJ TRIG 1 2 3 L 5 gt 6 7 8 9 TO SPU J54 SPU3 R J545 O ADJ 8147 NOTE 1 amp ER EiESLOS RIS 025 X 7 gt 7 gt gt 79 IL ALL RESISTANCE IN OHMS 0 25W CAPACITANCE IN FARA
26. Bod 9 A OR P BOB B POR B S P OB POB o5 OPERATIONAL OVERVIEW THE FRONT PANEL TURNING THE UNIT ON AND OFF SETTING UP MEASURING RANGE AND BEARING REDUCING OR ELIMINATING INTERFERENCE BETTER DISTINCTION OF ECHOES SETTING DELETING THE ALARM USING THE CURSOR SHIFTING THE DISPLAY 200 FUNCTION PLOTTING DISPLAYING DATA OPTION APPLICATION FACTORS AFFECTING MINIMUM RANGE FACTORS AFFECTING MAXIMUM RANGE INTERPRETING THE DISPLAY POSITION FIXING WITH RADAR COLLISION AVOIDANCE AIDS TO NAVIGATION MAINTENANCE GENERAL SCANNER UNIT DISPLAY UNIT w BOR OB P BOB WV B POS 4 OR O4 Wo 4 k bo ho B 9 B 5 4 bom ho bod k ek o BOR P 9 oBo amp OR eee COP 3 9 o 8o 9 oO BOW OR b b w 9 9 WV 9 o 9 4 oW 4 FOR S TROUBLESHOOTING BASIC TROUBLESHOOTING MORE EXTENSIVE TROUBLESHOOTING CHECKING THE MAGNETRON SCHEMATIC DIAGRAMS OUTLINE DRAWINGS ww Bog Rob d bo 9 A 5 5 amp A B 3 BOR X POP BOW OR 9 9 POR Pob POR 4 Bo P B O8 AO B 24 to 40 24 26 26 30 33 34 34 36 37 38 39 40 4j to 50 41 41 43 47 49 50 51 51 51 51 52 to 56 FEATURES The FR 7010D has a large variety of functions all contained in
27. DS UNLESS NOTED OTHERWISE FR 7010D 7040D 7100D MATERIAL Q TY REMARKS tf Z t v 3 AR Time ADJ 8147 PRESET CONTROLS WR Ya A FE AR V0L 8148 POT ASSY Bo C3327 K04 A FURUNO ELECTRIC CO LTD O2 214193713 000 784 8 404 82660 m mw 0070 54 LIE 00012 04 AV1dSIG LHO Uu 2 22 I 14 5C90C 9 anid I APA Z uerbo 045543 DESO USOT Jo DEVE RD 9 pete oui pense ax SPONA i 2 310N L X3 1H91u8 hj 1X3 1H9188 ZX3 1H9188 NSEISTHLNS 10221 006 20vAM 009 3115 602 8V3MLX 21 CD Zoro D 204279 X66 4 4 9 Zo Z 883 001 I MT 200 EFT Az i 7 01 omi tr torgz ii 1 zx oztea C 0 02 a 0 lt Ott 0 9 0022 gird 2i 1H9 48 8ns GOZAN uns rss 0 6 3 X00 V02 1 od 62235 1 Q Q qx wino X099 X9 l OZ n 1 V225 8228 HO cts MOH 0N9 AM v Mert i 6224 AZL 93 0 282906119 50 aet 8076
28. G ALIGNMENT 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 degree 7 In practice you will probably observe some small error the display for most installations because of the difficulty in achieving accurate initial positioning of the scanner unit The following adjustment will compensate for this error If you don t know how to do it well it s best you leave this part to a competent service technician Remember that the top radome fixing bolts remain untightened They should now be secured if the following alignment is not necessary 15 1 Identify a suitable target e g ship or buoy at a range between 1 8 to 1 4 miles preferably located on or around the heading mark To minimize errors of bearing you should generally keep echoes in the outer half of the picture by changing the range scale HIP 5 109 149 gt BEANING ON RADAR BEARING ON CHART Fig 13 Relative Bearing Alignment When the relative bearing of a target measured on the radar sereen does not agree with that measured on the navigation chart 2 Move the cross hair with the trackball so that the intersection of the cross hair bisects the center of the target and press the touchpad 3 Read the EBL bearing at the bottom left on the screen 4 Find the relative bearing to the target from the ship s
29. No OM E3327 0C L OPERATOR S MANUAL MARINE RADAR FR 7010D FURUNO ELECTRIC LTD NISHINOMIYA JAPAN 900310T 9003 yoha PRINTED iN JAPAN WARMING AGAINST HIGH TENSION The operation of this equipment involves the use of high voltage which endangers human life Although the design of the equipment has been made in due consideration of measures to insure the operator s safety adequate precaution must be exercised when reaching inside the equipment for the purpose of maintenance and service Do not change a component or inspect the equipment with the voliage applied residual charge may exist some capacitors with the equipment turned off Always short all supply lines to the chassis with an insulated serewdriver or a similar tool prior to touching the circuit FIRST AID IN CASE OF ELECTRIC SHOCK When a victim struck by electricity is found first switch off the equipment via the main switch on the equipment or the ship s distribution board If this is not possible protect yourself with dry insulating material a wooden plate or rod cloth your belt etc and pull the victim clear of electricity the victim is not breathing himself apply artificial respiration according to the Method of Artificial Respiration Do not give halfway Perseverance and continual efforts are important in artificial respiration METHOD OF ARTIFICIAL RESPIRATION Lay the victim on his back Position
30. OVERVIEW THE FRONT PANEL This radar is basically very easy to operate If you change a control setting you will see the associated reaction almost immediately on the screen Most touchpads carry abbreviated names to show their functions The same nomenclature appears on the sereen for confirmation Examine the display unit You will notice that most controls except for the SCANNER switch are on the right hand side and the CRT display screen is on the left hand side The SCANNER switch is provided on the ramp base to turn on off the scanner radiator This switch is usually left ON except for field servicing When turning it off the radar stops transmitting and the message ST BY standby appears on the screen The TUNE RAIN A C SEA and GAIN controls are grouped together because they control the radar receiver prevent accidental alteration of the settings all controls in this group may be locked by pushing in the control When readjustment is necessary push and release the control to bring it out again The and touchpads turn on off power and transmission The touchpads change the range scale in use 2 2 8 8 FR or MI touchpads are mostly on off controls Adjusting the brightness of the CRT reducing radar interference and temporarily erasing the heading mark are some of the functions of this group of touchpads The touchpads used
31. TALLATION GENERAL MOUNTING CONSIDERATIONS DETAILED INSTRUCTIONS SCANNER UNIT INSTALLATION DISPLAY UNIT INSTALLATION CHECKING THE INSTALLATION INITIAL PROCEDURES RELATIVE BEARING ALIGNMENT SWEEP TIMING ADJUSTMENT PRESET GAIN ADJUSTMENT TUNING amp TUNING INDICATOR SENSITIVITY ADJUSTMENT PANEL ILLUMINATION ADJUSTMENT A C SEA ADJUSTMENT A C RAIN ADJUSTMENT MAGNETRON HEATER VOLTAGE ADJUSTMENT MEASUREMENT OF BLIND SHADOW SECTORS CONTENTS w ee B VOR 9 POW POR P o4 4 gt 4 i 9 9 G8 OA 9 Po PROP amp 4 k a OR 9 9 Bo B TW BON B B BOR 9 X P B 9 Y VW P Oh 9 P o4 9 b gt 5 oW BO bo BOB k B 9 POR 9 B B POP OS Wo b 9 9 w oW b o4 b B b b BB amp BOR a BOB BOB B oS B oH 9 POP 9 P 9 BOR OB 9 nu Po S P B P P 9 V bow P 4 5 ob 9 8 ROB WOB B P BOB V 9 BOW OR ROB SOR PON B 9 o Ph 4 4 9 P oh OB BO t it k a Kok OB B od RO ere BOR BOB 4 o 9 4d b sak qaqaq B BOB BOR 9 m 9 b 9 b 4 a wa ko aa sa bo A oh B A O9 9 BA ROG P B amp BOB BOW S o9 9 a Bob a k ok 6 9 B B BB P h 9 n ROU POR OR ROB BOR 8 P pee
32. a rugged plastic case All controls respond immediately to the operator s command and each time a touchpad is depressed 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 lightweight and low cost radar Newly designed compact and lightweight radome antenna with precision 94em center fed radiator High definition 12 raster scan display 4 levels of target quantization for high target definition without problems associated with single level quantization systems On screen alpha numeric readout of all operational information 8 ranges from 0 25 to 24 nm 3 pulselengths and pulse repetition rates automatically selected for optimum short range to long range performance Guard zone alarm for use as an anti collision aid provided as standard feature EBL Electronic Bearing Line VRM Variable Range Marker Guard Alarm x2 Zoom Shift Cursor and the cross hair are controlled by a trackball Operates on 10 2 to 40 0VDC power supply and consumes only 50W Protection against reverse polarity and excessive voltage provided Ship s position in latitude longitude ship s speed and range bearing to a waypoint optionally shown in the bottom text area from external navigator having NMEA 0183 or FURUNO CIF output format iii SPECIFICATIONS OF FR 7010D SCANNER UNIT 1 Radiator Sl
33. aring of the target with the EBL noting the exact direction of the ship s heading when doing so Next make allowance for compass deviation true or magnetic and find the true bearing of the target unless the gyrocompass is connected Sweep out the range to the target with the compass on the chart and plot the true bearing of the target The point of intersection is your approximate position Fig 46 illustrates the correct method of position fixing using a range and bearing to a point of land 0149 Course 340 Magnetic Magnetic Fig 46 Position Fixing Using Range and Bearing to a Point of Land By Two Bearings Generally fixes obtained from radar bearing are less accurate than those obtained from intersecting range ares The accuracy of fixing by this method is greater when the center bearings of small isolated radar conspicuous objects can be observed Similar to position fixing using range and bearing this method affords a quick means for initially determining approximate position The position should then be checked against other means to confirm reliability Position fixing using two bearings is determined by measuring the relative bearings for the two targets and then determining their true bearings Plot the two bearings on the chart the point of intersection of the two bearings is your approximate position Fig 47 illustrates the correct method of position fixing using two bearings Fig 47 Position Fixing Using Two B
34. ars are displayed MEASURING RANGE AND BEARING In the basic radar system your ship is in the center of the screen and any target received is displayed in a map like projection throughout 360 This allows the bearing and range from your boat to a target appearing on the screen to be measured Range is measured with the fixed range rings rough estimate the cross hair accurate and easy but temporary method or the Variable Range Marker VRM accurate and continuous indication of its range Bearing is measured with the cross hair on the Electronic Bearing Line EBL continuous indication of its bearing If you want to know momentarily the range and the bearing to a target pip you may use the cross hair with the trackball To know and indicate the data continuously press the 6 touchpads after operating the trackball the data mentioned above are displayed at the lower part of the screen The EBL and or VRM are erased from the screen by pressing and holding the and or touchpads for two to three seconds 30 Range Measurement or To obtain a rough measurement of the range to a target pip the fixed range rings are used The fixed range rings are the solid rings appearing on the CRT These rings are activated deactivated by pressing the touchpad The range to a target using the fixed range rings is determined by counting the number of rings between the center of the CRT and the target Check
35. ater spray will most assuredly cause damage to the sensitive components inside Keep these factors in mind when planning the installation of the display unit Many owners will undoubtedly use this radar on small boats The display unit may be mounted inside an enclosed cabinet Corrosion can occur especially on the rear connectors exposed to salt spray unless these are taped and thoroughly sealed with putty compounds made especially for this purpose Most small boats are equipped with such an enclosed cabinet and most have clear doors so that equipment may be seen behind them The display unit consumes only a moderate amount of power so there is no need for forced air ventilation However it is necessary to provide adequate space behind and around the display unit to allow some circulation of cooling air and to provide convenient access to the rear connectors Even though the picture is quite legible even in bright sunlight it is a good idea to keep the display unit out of direct sunlight or at least shaded because of heat that can build up inside the cabinet DETAILED INSTRUCTIONS SCANNER UNIT INSTALLATION The scanner unit is completely watertight when installed correctly 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 rigging intercepting the scanning beam Any obstructions will cause shadow and blind sectors A mast for instance with a diameter considerably le
36. ath taking care not to nick the shielding Eme 2 3 Lead wires mesh and slide the mesh back Power cable _ Inner sheath VV 5 2 0x2C shielding mesh or 14 2 Strip off 10mm of the inner sheath and remove about 3mm of the insulation from both ends of the lead wires 3 Slide connector s housing over the cable 4 Solder the lead wires to the connector taking note of the polarity i e 1 and 2 5 Assemble the connector and tighten two set screws 6 Fold back the shielding mesh and clamp the connector over top of it 7 Wrap the mesh with vinyl tape Wrap with vinyl tape Ground Connection Fig 11 Power Connector Assy Run heavy duty ground wire from the grounding terminal at the rear panel of the display unit to the nearest grounding point on the boat Follow the drawing below for detailed wiring information Power Connector NMEA connector Display Unit Scanner Unit Black White Va Power Cable pane Ground Terminal mm Fig 12 Detailed Wiring Diagram 14 Gyrocompass Connection Option If an AC synchro or DC step type gyrocompass is installed on your boat the true bearing of your ship s heading of the cross hair and of the EBL Electronic Bearing Line may be seen on the radar display A gyro cable fabricated with a connector and an A D Converter AD 105 are optionally supplied Remove the gyro connector cap on the rear panel
37. bow visually using a pelorus 5 Compare the bearing measured in step 3 and 4 above and calculate the direction and magnitude of the bearing error If the error is within 5 adjust rotary code switch 51 HEAD clockwise rotation shifts the picture CW Fig 19 H the error is more than 5 set 51 to 0 and then adjust the position of heading mark key S801 20 located inside the scanner unit 7 Remove the radome and slightly loosen the two screws which secure the heading mark key mounting plate If the screws are loosened excessively fine adjustment will be more difficult 8 Adjust the position of the heading mark key moving to the aft or fore direction if the bearing A is greater or smaller than respectively 9 Adjust at the display unit as in step 5 10 After adjustment tighten the heading mark key fixing screws securely 11 Install the radome on the radome base assembly being careful of its direction The narrower recessed part should face the bow direction See Fig 8 12 Tighten the radome fixing bolts securely 13 As a final test move the boat towards a small buoy and ensure that the buoy shows up dead ahead on the radar when it is visually dead ahead 17 SWEEP TIMING ADJUSTMENT This adjustment is carried out to ensure proper radar performance especially on short ranges The radar measures the time required for a transmitted echo travel to the target and return to the source a
38. comes too great ECHO SIZE As the radar beam rotates the painting of the pip on the display begins as soon as the leading edge of the radar beam strikes the target and continues until the trailing edge of the beam is rotated beyond the target Thus a target cannot appear less wide than the beamwidth As the beam widens with distance from the scanner so also will the widths of targets vary on the display Fig 39 illustrates the relationship between beamwidth and the appearance of a target pip Short Range Target Long Range Target Fig 39 Beamwidth vs Target Appearance 44 FALSE ECHOES Occasionally false echoes appear on the sereen at positions where there is no target some cases the effects oan be reduced or eliminated operator should familiarize himself with the appearance and effects of these false echoes so as not to confuse them with echoes from legitimate contacts Multiple Echoes Large Own Object Multiple echoes occur when a Ship short range strong echo is received from a ship bridge or breakwater A second a third or more echoes may be True observed on the display at Echo double triple or other multiples of the actual range 90 False of the target as shown in Echoes Fig 40 Multiple reflection echoes be reduced and often removed by decreasing the gain or properly adjusting the A C SEA Fig 40 Multiple Echoes Side Lobe Echoes Every time the scanner rotat
39. cur in a shadow sector 2 they appear on the bearing of the obstruction but at the range of the legitimate contact 3 when False plotted their movements are Echo usually abnormal and 4 their shapes may indicate that they are not direct echoes Target Own Ship Fig 43 Indirect Echoes RADAR PICTURE AND CORRESPONDING CHART Under normal conditions a picture which is very similar to a chart can be obtained on the radar display The radar picture and corresponding chart shown in Fig 44 are from the Kada Inland Sea south of Osaka Bay in Southwestern Japan Fig 44 Navigation Chart and Corresponding Radar Picture 46 POSITION FIXING WITH RADAR Position fixing with radar can be accurate and easy once you become familiar with the different methods The three most common methods will be discussed in this section Take a compass and a navigation chart to try to fix your position while reviewing this section By Radar Range The simultaneous measurement of the ranges to two or more fixed objects is normally the most accurate method of obtaining a fix with radar alone Preferably at least three ranges should be used However the use of more than three range arcs may introduce excessive error because of the time lag between measurements 1 you will be moving you take successive measurements When obtaining a fix it is best to measure the most rapidly changing range last because of a smaller time lag in the
40. d Range in Use Note 1 NM GYRO 15 Tuning Bar Fixed Range Ring interference Interval Rejeetor C ross Hair Heading Mark Note 1 This distance is from the own ship s position to the outermost position of 909 or 270 Note 2 The tenths of 8 degree place shows only 0 2 3 5 1 or 8 2 28 315 1 R Distance to Cross iair Bearing to Cross Hair Fig 22 Loestion of Display Sereen Indicators 26 The solid radial line at 09 is the heading mark heading mark is always on the sereen and indicates the ship s heading You may temporarily erase the mark by holding down the touchpad The nearly invisible line rotating radially around the screen is called the sweep The sweep rotates synchronously with the scanner so at any given time the direction in which the scanner is pointing is known With every rotation echoes appear on the sweep as brighter spots of light thus presenting a complete picture of the surrounding area Placing the radar in standby helps extend component life Therefore when the radar will not be used for an extended period of time but you want_to keep it in a state of readiness set it to ST BY mode by pressing the touchpad again Range Selection 2 The range selected automatically determines the fixed range ring interval the number of fixed range rings pulselength and pulse repetition for optimal detection in both short and long ran
41. d P LA P LB 14 11 lt 1 GROUND NOTET WEIGHT 12V 12V GROUND 12V 42V TRIGGER MOTORI HD MARKER BANDWIDTH BANDWIDTH TUNING IND TUNING PEAK GROUND R MONITOR VIDEO SIG TUNING 12 lt 13 lt 2 lt 2 lt 3 lt lt 9 lt 10 lt HRB 19 e a 8 4 MODEL 1730 FR 7010D MODEL 1830 APPROVED DJ1 21 01 4 lt DJ1 8 DJ1 45 DJ1 12 DJ1 DJ1 14 DJ1 16 DJ1 18 DJ1 DJ4 13 DJ1 22 FURUNO l RF2 2 RF CHASSIS 6 lt 8 lt lt 1 lt BEARING PULSE DISPLAY UNIT CHECKED AR FURUNO FURUNO D 2 2 3 R 5 TAI H N n x uj 8 a 3 5 g u 55 lt E ER n g2 R 5 ESE E 5 BIS amp oo Pol eJ ua SCANNER BASE PLATE PLATFORM NOTE 1 B VENT TUBE Kiktji 7 MAKE A HOLE OF 20mm ON PLATFORM 920 oT BE BITH L mp SHIP S BOW K 8 2 II 6 g Ti o gt thw 25 7 7 AW AO 2 u SY y 25 CABLE ENTRY N e Qo L e xx TET ca mg H x ay j 7X 80 ET ERE 10 FIXING HOLES axe om ae gt lt r co NOTE 1 VENT TUBE IS FITTED AT FACTORY lt 25 Kdk Ti 7iup mE x IL gt NOTE 2 COMPASS 5
42. distance 3 1m 10 17 feet standard compass and 1 75m 5 74 feet steering compass should be also observed If the distance is not enough deviation of the magnetie compass will result a sailboat the scanner unit is normally mounted up on the mast antenna bracket may be optionally supplied to mount it with ease See page 10 power boats it is usually installed on a framework above the flying bridge However in many cases the unit be installed directly on the top of the wheelhouse near the ship s centerline When this radar is to be installed on larger vessels take care to consider the following points 1 The interconnection cable is run between the scanner unit and the display unit If additional interconnection cable is required for a particular installation an unbroken length of cable must be used i e no splices allowed and maximum length of the interconnection cable is 30 meters On a sailboat where it will be necessary to step the mast for maintenance junction box may be installed at the base of the mast under the floorboards The junction box must be watertight and the wire breakout must be kept as short as possible 2 Deposits and fumes from a funnel or other exhaust vents can adversely affect the performance of the antenna since hot gases may warp the radome The seanner unit must not be mounted in a position where it may be subjected to temperatures in excess of 70 C 158 F The figure be
43. e appears the sereen At this point unless the tuning just happens to be at the optimum point slowly adjust the coarse TUNE control accessible through the VR panel watching the sereen for radar targets See Fig 19 You must patiently adjust this coarse tuning control in very small increments allowing the sweep to go around completely in order to observe the effect of a single small change in its setting When you are finished optimizing the coarse tuning control behind the VR panel verify that the fine TUNE control on the front panel peaks up for maximum radar echoes at 12 o clock or at least close to that point gt Adjust the GAIN control on the front panel for a little background noise showing on the sereen and then hit the touchpad several times to bring you down to the 0 25 mile range Without disturbing the front panel GAIN control adjust the A C SEA control until nearby radar targets are clearly shown on the screen Too much A C SEA action will eliminate small targets and too little A C SEA action will cause the screen to be so full of targets and noise that it is hard to determine which target is which as compared to visual sightings Note that adjusting the GAIN and A C SEA controls in this manner GAIN at long range A C SEA at short range will equalize the picture at all ranges and you will not have to jockey back and forth with the GAIN control especially when you change range scales RELATIVE BEARIN
44. earings 48 COLLISION AVOIDANCE Collisions at sea sometimes occur because the radar picture doesn t match the information provided by the eye in clear weather and because of the misunderstanding of relative motion In a relative motion display your ship is represented by the spot of light fixed at the center of the screen whatever the speed of your own ship With both your own ship and the target in motion the successive pips of the target do not indicate the actual or true movement of the target If own ship is in motion the pips of fixed objects such as landmasses move on the display at a rate equal to and in a direction opposite to the motion of own ship Only when your ship is stopped or motionless do target pips move on the display in accordance with their true motion Fig 48 illustrates the relative and true motion of a target contacted by radar In Fig 48 ship A at geographic position Al on true course of 001 at 14 knots initially observes ship B on the PPI at bearing 179 at 4 1 nm The bearing and distance to the ship changes as ship A proceeds from position 1 to The changes in the position of ship relative ship are illustrated in the successive PPI presentations corresponding to the geographic positions of ships A and B Likewise ship B at geographic position Bl on true course 25 at 21 knots initially observes ship A on bearing 001 at 4 1 nm The radar operator aboard ship A will determine that relative
45. es some radiation escapes on each side of the beam called side lobes If a target exists where it can be detected by the side lobes as well as the main lobe the side echoes may be represented on both sides of the true echo at the same range as shown in Fig 41 Side lobes show usually only on short ranges and from strong targets They can be reduced through eareful reduction of the gain or proper adjustment of the A C SEA eontrol True Echo False Echoes Fig 41 Side Lobe Echoes Blind and Shadow Sectors Funneis stacks masts or derricks in the path of antenna may reduce the inten sity of the radar beam If the angle subtended at the scanner is more than 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 Fig 42 Eze sector Fig 42 Blind and Shadow Sector 45 Indirect Echoes Indirect echoes may be returned from either a passing ship or returned from True reflecting surface on your own Echo ship for example stack both cases the echo will return from a legitimate contact to the antenna by the same indirect path The echo will appear on the bearing of the reflected surface but at the Same range the direct echo Fig 43 illustrates the effect of an indirect echo Indirect echoes may be recognized as follows 1 they usually oc
46. 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 because of the probability of indirect false or multiple echoes being produced from nearby buildings or other vessels Fig 17 Appearance of a Shadow Sector on Shadow caused by mast the Display Screen The result of the above measurement should be recorded on a blind shadow sector diagram Fig 18 B is an example of a shadow sector diagram for the scanner unit sited as in Fig 18 A The blind shadow sector diagram should be fixed near the display unit Scanner 270 Shadow Sector 1809 Shadow Sector Diagram for Scanner sited as in left figure Blind Sector A Shadows caused by objections Fig 18 21 Sweep Timing Adj Heading Adj VR6 TIMING 1 HEAD Tune Adj VR1 TUNE lune Peak Adj VR8 PEAK Tune Ind Adj VR IND A C RAIN Adj VR2 RAIN SEA Adj Panel Illumi Adi VR3 A C SEA VR5 DIM Gain Adj VR4 GAIN Potentiometer Compartment PRESET Board ADJ 8147 2 e VR Panel Pry off the VR panel here with smali screwdriver H Photo No 2619 Fig 19 Display Unit with VR Panel Removed 22 Potentiometer V R801 Heading Mark Key 5801 Heading Mark Key Mounting Plate M Photo 2574 MD Board Test Point TP803 Fig 20 Seanner Unit 23 OPERATIONAL
47. g mark is not displayed The message NO HD blinks at the upper left hand side of the screen when heading pulse is not received Defective heading mark key 5801 Defective SPU board SPU 7880 CHECKING THE MAGNETRON Measuring the Magnetron Current The life of the magnetron largely depends on how many hours it is used Fewer target echoes appear on the screen when the magnetron gets old To determine magnetron suitability use the following procedure to measure the magnetron eurrent l 2 c2 If Turn off the SCANNER switch to temporarily stop antenna rotation Connect a multimeter set to 10VDC range to pin 5 and 6 of TP803 on the MD 7818 modulator board See Fig 53 Pull out jumper JMP2 on the SPU 7880 processor board and operate the radar for transmission on 0 25nm range See Fig 52 Confirm that the magnetron current voltage is 0 5 to 1 2Vde The magnetron current is measured as a voltage Change the range setting to 24 nm and confirm that the voltage is 0 9 to 1 1Vde the voltage is far out of the range specified above the magnetron may be faulty Never forget to put back jumper JMP2 after checking 94 D i B Ver Sync Adj eflection Board VR202 1Hi HOLD Hor Syne Adj VRAO01 V HOLD Fuse L201 2A Brightness Adj VR204 BRIGHT Contrast Adj VRIOI CONTI Note Since the CRT is turned 909 the indications V and H correspond to horizontal
48. gain is too high or low adjust it again Procedure 1 Set the controls z J max range GAIN fully CW max RAIN and A C SEA fully CCW min Q off f off off and 6 on 2 Set VR4 at the position where a little background noise appears on the screen See Fig 19 for the location of 3 that the noise increases when the circuit is not activated touchpad off 18 TUNING amp TUNING INDICATOR SENSITIVITY ADJUSTMENT Tuning and its indicator sensitivity are preadjusted at the factory However if the best tuning condition is not obtained with the TUNE control set at its mid travel execute the following procedure Procedure 1 Transmit the radar on maximum range long range with the TUNE control set at its mid travel and wait about 10 minutes for magnetron oscillation to stabilize 2 Adjust potentiometer VR1 TUNE Fig 19 located behind the VR panel of the display unit so that a comparatively weak long range echo is discerned with maximum definition 3 Adjust potentiometer VR8 PEAK Fig 19 for the maximum number of tuning bars 4 If all the tuning bars light up turn potentiometer VR7 IND CCW so that about four bars light up and then adjust VR8 PEAK as in step 5 Adjust VR IND so that the fifth tuning bar lights up PANEL ILLUMINATION ADJUSTMENT The illumination of the touchpad panel can be adjusted to suit your needs by adj
49. ges see the table below Most ranges are either half or twice their neighbor for easy identification of targets when changing the range The present range and its ring interval are displayed at the top left corner of the CRT The range chosen varies depending on circumstances When navigating in or around crowded harbors it is best to select a range between 0 5 and 1 5nm 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 Remember that the maximum range a radar can see is dependent on many factors Factors affecting maximum range are discussed in the Application section There are eight ranges available 0 25 0 5 0 75 1 5 3 6 12 and 24nm To select a range press the or 2 touchpad depending on whether you want to select a higher range or a lower range It is possible to increment or decrement the range setting automatically by holding down the or 9 touchpad Table 2 Range Setting and Corresponding Fixed Range Ring Interval and Number of Fixed Range Rings Pee ew er enl es es a 4 Interval nm No of Fixed Renge Ringe 5 3 3 jejejeje 27 Setting the Control gt The GAIN control is used to adjust the sensitivity of the receiver and thus the strength of echoes as they appear on the screen It is adjusted so that a speckled noise background is jus
50. hroughout the world This dedication to excellence is furthered by our extensive global network of agents and dealers The FR 7010D is just one of the many Furuno developments in the field of radar The compact lightweight but rugged unit is easy to install and operate and is suitable for use on a wide variety of vessels This unit is designed and constructed to give the user many years of trouble free operation However to obtain optimum performance from this unit you should carefully read and follow the recommended procedures for installation operation and maintenance No machine can perform to the utmost of its ability unless it is installed and maintained properly We would appreciate feedback from you the end user about whether we are achieving our purposes Thank you for considering and purchasing Furuno equipment CAUTION No one navigational aid should be relied upon exclusively for the safety of vessel and crew The navigator has the responsibility to check all aids available to confirm his position Electronic aids are not a substitute for basic navigational principles and common sense TO USERS OF FURUNO RADARS MODEL 1730 1760 1830 1930 FR 7010D 7040D Two 5 fuses have been added to the spare parts from the production in September 1990 These fuses are for use with 24VDC or 32VDC power supplies The two 10 fuses for 12VDC power supply To show this addition in your manual please updata it
51. illing holes take care that the holes are parallel with the fore and aft line In very hot and humid climates moisture may condense inside the radome causing corrosion To prevent this the vent tube is fitted This tube is designed to allow the radome to breathe while not allowing entry of water from outside into the radome Therefore make sure the tube is kept free of foreign materials and is not pinched or kinked The vent tube extends downward by 27mm 1 1 from the radome base Ensure the vent tube extends downward before installing the radome See Fig 6 3 Now install the radome base on the platform having 5 10mm 1 5 2 5 in thickness Find the vent tube on the radome base Next position the radome base so that the vent tube faces the stern direction This alignment should be earried out as accurately as possible N RADOME BASE ASSY Z Z 5 10mm CABLE ENTRY 4 SW PLATFORM 4 612 HOLES i STERN 0 25 HEX BOLT Note Do not apply excessive 427 HOLE FOR CABLE ENTRY torque to fix the bolts Use 160m 990 HOLE FOR VENT TUBE a 15cm long wrench 6 3 Fixing torque 200 250kgcem N PLATFORM s 5V LOCALLY 4 Fig 5 Installing the Scanner Unit 6610 275 27 SCANNER BASE PLATE PLATFORH VENT TUBE MAKE A HOLE OF e20mm ON PLATFORM VENT TUBE IS FITTED AT FACTORY SHIP S BOW 25 CABLE ENTRY 4
52. is moved 4 Press the touchpad again asterisk disappears indicating the guard zone is completely actuated See Fig 30 4 3 Any ships landmasses etc coming into the guard zone will trigger the audible alarm telling the operator to proceed with caution If the audible alarm sounds it can be silenced with the touchpad When this is done the indicator GUARD is displayed in inverse video but the guard zone remains on the screen 6 Press the touchpad again to restore the audible alarm 7 cancel both the guard zone and the audible alarm press and hold the touchpad for two to three seconds Note 1 When UP RANGE indication appears instead of GUARD indication at the upper right hand side of the screen select a higher range to display the guard zone on the screen Note 2 A target 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 environment the operator is required to properly adjust the A C SEA anti elutter sea AC RAIN anti clutter rain and GAIN to ensure that target echoes within the guard zone are not overlocked by the alarm system 35 Guard zone you Asterisk want to set blinks m GUARD a 74 7 1 t UM 1 1 lt gt D i B DI J EE Move cross hair to point or
53. low shows typical scanner unit placement Fig 2 Typical Scanner Unit Placement Seanner Unit Preparation After deciding the location of the scanner unit preparation of the seanner unit is necessary Use the following procedure 1 Open the radome package carefully Remove the four M10 bolts together with spring and flat washers on the bottom of the radome base assembly These bolts spring and flat washers may be discarded but do not use the bolts in step 4 LULU JL ZULU RADOME eee EU w RADOME BASE 5 ASSY M10 BOLT Fig 3 Preparing the Radome Base for Mounting 2 Unbolt the four fixing bolts used to hold the white radome oover to the blue radome base and carefully lift the radome up Remove the antenna stoppers This will release the antenna from its shipping preparation position and allow it to rotate freely OPPER FIXING BOLT 4 pes gt Fig 4 Removing the Radome Cover Scanner Unit Mounting The mounting surface must be parallel with the ship s waterline and provided with six holes whose dimensions are shown in Fig 5 Four 12mm 1 2 holes for fixing one 27mm 1 17 hole for the cable entry and 20mm 3 4 hole for the vent tube There is a vent tube on the base of the scanner unit which should face the stern direction The unit is adjusted so that a target echo returned from the bow direction will be shown on the 0 Heading Marker position on the sereen When dr
54. n clutter in heavy rain Eliminates or reduces interference caused by other nearby operating radars 21 Front Panel Adjusts the brightness of the CRT Controls Activates releases the echo stretch function which stretches echoes lengthwise for better distinction Plots cancels the relative movement of all targets to own ship Displays erases navigation data own ship s position and speed and waypoint s bearing and range This function is effective only when optional navigation equipment is connected Shifts resets the own ship s position to any position Magnifies resets the area between own ship and an arbitrary location by two times Changes range unit for VRM and ecross hair between NM and KM Press this with holding down 5 touchpad Displays erases the cursor Displays erases the guard zone Silences actuates the audible alarm Displays erases the Electronic Bearing Line Selects true relative bearing readout provided that a gyrocompass is connected Displays erases the Variable Range Marker Trackball Moves the cross hair on the radar screen 25 TORNING THE UNIT AND OFF After having confirmed that the SCANNER switch is turned on press the touchpad and power is applied to all circuits of the radar system The touchpad panel will light up the antenna will begin to rotate but no targets appear on the CRT This is because the magnetron needs approximately 2 min and 30 sec to warm
55. nce effects are easily distinguished from normal echoes because they do not appear in the same place on successive rotations of the scanner 33 This type of interference is reduced by activating the Interference Rejector circuit Press the touehpad to activate the circuit and you will see the indicator IR appears at the upper right hand side of the sereen Press the touchpad again to switeh off the circuit when no interference exists otherwise weaker targets may be missed Note that the IR circuit is defaulted to on when turning on the power A radar interferenee B IR Cireuit ON IR eireuit OFF interference reduced Fig 29 Radar Interference BETTER DISTINCTION OF ECHOES As a general rule of thumb the reflected echoes from long distance targets are displayed on the sereen as weaker and smaller blips even though they are compensated by the radar s internal circuitry The touchpad is provided to magnify small blips in middle and long ranges i e 1 5 to 24 mile ranges Now press the touchpad The indicator ES appears at the upper right hand side of the screen and the echoes are doubled lengthwise Note that this function is inactive on the 0 25 0 5 and 0 75 mile ranges the ES indieator is shown in inverse video to your attention Press the touehpad again to turn off this function SETTING DELETING THE ALARM The alarm function allows the operator to set the desired range 0 to maximum range and bea
56. nd confirm that background 212 7 suppressed noise rain clutter is effectively suppressed the range of 0 to 3 Y 12 nm min or 0 to 20 nm a qu MAGNETRON HEATER VOLTAGE ADJUSTMENT Magnetron heater voltage is formed at the MD board of the scanner unit and preadjusted at the factory Therefore no adjustment is required even though the cable length between the display unit and the seanner unit is changed Execute the following procedure to confirm Procedure 1 Suspend the antenna rotation by turning off the SCANNER switch 2 Connect a multimeter set to 10VDC range between 4 and 6 of test point TP803 on the MD board See Fig 20 3 Confirm that the multimeter shows 7 5V 0 1V If not adjust potentiometer VR801 Fig 20 on the MD board MEASUREMENT OF BLIND SHADOW SECTORS In some shadow sectors it should be remembered that there may not be sufficient intensity to obtain an echo from very small targets even at close range despite the fact that a large vessel may be detected at a much greater range in non shadowed sectors For these reasons the angular width and relative bearing of any shadow sectors should be determined This section describes how to do this In the case of a new vessel this should be done during sea trials In other ships it should be done at the first opportunity after fitting a new radar set It should be realized that even a small shadow sec
57. nd for the IF amp chassis See Fig 7 9 Mate the two plugs 9 and 4 ways to the MD board Remove the lid of the IF board and mate the plug 14 ways referring to Fig 7 10 Put the radome on the radome ZA BOW base assembly taking note of that the narrower recessed NARROW part should face in the direction of the bow Fig 8 22 q gt 10 25 8 Radome Cover Placement 11 Tighten the radome fixing bolts temporarily because it may have to be opened again for adjustment after installation 10 11 DISPLAY UNIT INSTALLATION Locate the display unit in a position where it can be viewed and operated conveniently but where there is no danger of salt or fresh water spray or immersion Compass Safe Distance The magnetic compass may be affected if the display unit is placed too close because of fields generated in the radar The compass safe distance approximately 0 8m 2 63feet standard compass and approximately 0 6m 1 37feet steering compass must not be disregarded The orientation of the display unit should be so that the radar screen is viewed while the operator is facing in the direction of the bow This makes determination of your position much easier The mount can be installed either on a tabletop on a bulkhead or on a overhead The mounting dimensions for this unit are shown on page D 1 You can use the mounting cradle itself as template for marking the mounting bolt holes Since the unit weights 1
58. nd the received echo is displayed on the CRT based on this time Thus at the instant the transmitter is fired the Sweep should start from the center of the CRI sometimes called sweep origin A trigger pulse generated in the display unit is sent to the scanner unit through the interconnection cable to trigger the transmitter magnetron The time taken by the signal to travel up to the scanner unit varies depending largely on the length of interconnection cable During this period the display unit should wait before starting the sweep When the display unit is not adjusted correctly the echoes from a straight local object e g a harbor wall straight pier etc will not appear with straight edges they will be seen as pushed out or pulled in near the picture center The range of objects will also be incorrectly shown Therefore the following adjustment should be carried out after installation Procedure 1 Set the unit at 0 25 nm range and adjust the GAIN and A C SEA controls properly 2 Visually select a straight object e g a harbor wall straight pier etc 3 Adjust the TIMING potentiometer VR6 Fig 19 so that a straight object will appear straight with no pushing or pulling near the pieture center A improper B proper C improper pulling inward pushing outward Fig i4 Sweep Timing Adjustment PRESET GAIN ADJUSTMENT Preset gain is preadjusted at the factory llowever if the receiver
59. nimum range set by the pulselength and recovery time Re covery time is the time required for the receiver to recover to half sensitivity after the end of a transmitted pulse so it can receive a return echo Proper adjustment of the A C SEA control may alleviate some of the problem Vertical Beamwidth The ability to see targets very close to the boat is decreased if the antenna is mounted too high off the water since the bottom of the vertical beam of the scanner cuts off nearby targets Fig 37 illustrates the effects of scanner mounted too high off the water SS Blind zone Fig 37 Effects of a Scanner Mounted too High off the Water FACTORS AFFECTING MAXIMUM RANGE It is nearly impossible to state that a radar has a maximum range The max imum range a radar will see is dependent on many factors not just the 41 range marked on the screen Not only does the sensitivity of the receiver and power of the transmitter but also the height above the water of both the scanner and target the size shape and composition of the target and atmospheric conditions contribute to increase or decrease the maximum detectable range Radar Horizon Radar is by its very nature essentially a line of sight phenomenon That means that you have just about the same range to the horizon with a radar as you do with your own eyes However under normal atmospheric conditions the radar horizon is 6 greater than the optical horiz
60. ol clockwise until clutter has disappeared to leeward but a little is still visible windward Fig 24 illustrates how to adjust the A C SEA control A Sea Clutter A C SEA control OFF B A C SEA properly adjusted Fig 24 Adjusting the A C SEA A common mistake is too over adjust the control so that all the clutter is removed By rotating the control fully clockwise you will see how dangerous this may be a dark zone is created near the center of the screen This dark zone can be dangerous targets may be missed especially if the gain has not been properly adjusted Always leave a little clutter visible on the screen this ensures weak echoes will not be suppressed no clutter is visible on the screen leave the control in the fully counterclockwise position As mentioned before in the procedure to set up the GAIN and A C SEA when the radar is first initialized after installation the GAIN is normally set to the point where there is a trace of noise speckles showing on the sereen on the 12 or 24 mile range and then the A C SEA is adjusted on the 0 25 mile range scale so that close in targets in a harbor situation are clearly seen This equalizes the GAIN and A C SEA characteristics for all ranges short and long In moderate conditions on the open sea where there are no definite targets to be seen on the shorter ranges you should still adjust the GAIN on the 12 or 24 mile range for some noise speckles on the CRT and then go d
61. on Therefore if the target does not rise above the horizon the radar beam cannot be reflected from the target Just as you can see a low to the water speedboat only up relatively close to your boat the radar can see a target high off the water farther than it can see an object which is close to the water Further the higher the antenna is mounted over the water the farther it is capable of seeing other targets However a possible negative effect with mounting the antenna too high off the water is that due to the finite vertical beamwidth of the scanner the amount of sea clutter due to reflections from nearby waves is increased to a greater distance from the boat Thus it is not at all uncommon to see a 3000 foot high mountain 50 miles away provided the radar has a 50nm detection capability while at the same time being only able to see a small power boat 3 or 4 miles away See Fig 38 The distance to the horizon from the scanner under normal conditions is calculated by the following formula Rmax 2 2 x hl h2 Where Rmax Radar horizon mile hl Antenna height meters h2 Target height meters For example to find the distance to the horizon in Fig 38 if the antenna height is 8 meters 26 feet and the target height is 15 2 meters 50 feet the maximum range is when the cliff begins to appear on the radar Rmax 2 2 8 15 2 14 8 miles Fig 38 Radar Horizon 42 Target Properties a general
62. or rotates too fast slow If a bearing pulse is not sent from the scanner unit NO BP indication blinks at the upper left hand side of the screen at ST BY mode Jammed scanner rotating mechanism Defective scanner motor B801 Defective motor control circuit on MP board 8070 3 Picture synchronization is abnormal Defective SPU board SPU 7880 Deflection board of CRT assembly Adjust potentiometers VR401 V HOLD and VR202 H HOLD for horizontal and vertical synchronization respectively 4 Sweep rotation is not synchronized with antenna rotation Defective scanner motor B801 Defective MD board MD 7918 Defective SPU board SPU 7880 5 Marks and legends appear but no echo nor noise appear Discontinuity or shortcircuit of video signal coaxial cable Defective SPU board SPU 7880 Defective IF board 1L 7758 53 6 Poor sensitivity Deteriorated magnetron V801 Refer to CHECKING THE MAGNETRON below Detuned MIC U801 1 Noise appears but no echo Defective MD board MD 7918 Defective IF board IF 7758 Magnetron heater voltage not applied Refer to MAGNETRON HEATER VOLTAGE ADJUSTMENT on page 20 Defective magnetron V801 Refer to CHECKING THE MAGNETRON below 8 Best tuning is not obtained at mid travel of TUNE control 9 Frequency deviation of the magnetron Refer to TUNING amp TUNING INDICATOR SENSITIVITY ADJUSTMENT on page 19 Headin
63. otted Waveguide Array housed in radome 2 Radiator Length 54cm 3 Horizontal Beamwidth 49 4 Vertical Beamwidth 25 5 Sidelobe Attenuation Withim 20 of mainlobe 18dB or less Outside 20 of mainlobe 23dB or less 6 Polarization Horizontal 7 Antenna Rotation 24 r p m nominal TRANSCEIVER MODULE contained in radome 1 Transmitting Tube Magnetron 9M302 E3513 9410MHz 30MHz PON 3 Peak Output Power 3kW nominal 2 Frequency amp Modulation 4 Pulselength amp Pulse Repetition Rate Range nm 1 5 3 Approx 2100Hz Approx 1200Hz Pulselength 0 08us Short 0 3 5 Mid 0 25 0 5 0 75 6 12 24 600Hz Pulse Repetition Rate 0 8 5 Long 5 Modulator FET Switching Method I F 60MHz 7 Tuning Manual 8 Receiver Front End MIC Microwave IC 9 Bandwidth 7MHz short mid pulses 3MHz long pulse 10 Duplexer Circulator with diode limiter DISPLAY UNIT 1 Indication System 2 Picture Tube Raster scan Daylight display 12 inch rectangular CRT 3 Range nm 0 5 0 75 4 Range Ring Interval nm poet pe 5 Meter of Rings eee ee 6 Bearing Resolution 4 5 Better than 1 7 Bearing Accuracy 8 Minimum Range 9 Range Ring Accuracy 10 VRM Accuracy 11 Mark Indication 12 Numeral Character Indication 13 Interference Rejector ENVIRONMENT CONDITION 1 Vibration
64. own to the 0 5 or 0 75 mile range to adjust the A C SEA until a bit of sea clutter is observed close to the boat 29 Adjusting the Brightness of the The touehpad is used to adjust the brightness of the CRT As a general rule of thumb choose brighter setting for daytime use and lower setting for nighttime operation However note that with too little brilliance the display becomes difficult to see and excessive brilliance decreases the life of the CRT There are four levels of illumination dim medium medium bright and bright Each time the touchpad is pressed the level will change in the above sequence status of this touchpad defaults to medium bright when turning on the system Tune Control Adjustment oo This control tunes the receiver to the exact frequency of the transmitter For the first 30 minutes of operation the tuning should be checked periodically to ensure that the radar is operating properly Readjustment after the first 30 minutes is normally not required The tuning is made by moving the control slowly through the limits of its travel to find the position where a comparatively weak long range echo is discerned on the sereen with maximum definition The tuning condition can be monitored by observing the tuning bar at the top right corner of the CRT The best tuning position is usually found at a point close to where the control is advanced 50 of its travel and the greatest number of tuning b
65. r rotation after initial transmission of the radar pulse is extremely small The range and bearing of a target is displayed on what is called a Plan Position Indicator or PPI This display is essentially a polar diagram with the transmitting ship s position at the center Images of target echoes sometimes called a pip are received and displayed at their relative bearings and at their distance from the PPI center With a continuous display of the images of targets the motion of the transmitting ship is also displayed Target Pip PPI 7 e LLLA T Sig nal Ee ho S ign Fig l How Radar Works INSTALLATION As was pointed out the Introduction to this manual this machine do its intended functions only if it is installed properly GENERAL MOUNTING CONSIDERATIONS This radar consists of two units the Display Unit and the Scanner Unit The seanner unit has been designed to withstand all the rigors of the marine environment and if installed properly is thoroughly waterproof A domed type of scanner unit where the scanner mechanism is enclosed in a thermoplastic resin dome ensures that halyards and other rigging won t get tangled up in the rotating scanner The display unit is carefully constructed to be able to withstand the humidity and corrosive atmosphere common in a pilothouse but it is not designed to be used outside directly exposed to the environment Salt w
66. radar plot from the ship s actual position For greater accuracy the objects selected should provide arcs with angles of cut as close to 90 as possible Small isolated radar conspicuous fixed objects whose associated range ares intersect at angles approaching 90 provide the most reliable and accurate position fixes Objects at longer ranges are less accurate for position fixing because they may be below the radar horizon and because the width of the radar beam increases with range To fix your position first measure the range to two or more prominent navigational marks which you can identify on the chart The method for measuring range is found on page 31 Next with the compass sweep out the ranges from the charted positions The point of intersection of the ares is your estimated position The method of position fixing when using radar range is illustrated in Fig 45 Fig 45 Position Fixing Using Radar Ranges By Range and Bearing to a Point of a Land The advantage of position fixing by range and bearing to a point of land is the speed with which fix be obtained A distinct disadvantage however is that this method is based upon only two intersecting position lines a bearing line and range obtained from two points of land If possible the object used should be smali isolated and identified with reasonable certainty To fix your position using range and radar bearing 47 first measure the relative be
67. ration the present plot is erased and plotting is restarted with the newly selected range Plotting Interval 30S 1M 3M or 6M seasoo PLOT 0 40 wamzcO PLOT 305 0 21 15 sec plotting interval Other plotting interval Fig 33 Indicators on Plotting Collision Course To ascertain another ship as a hazardous target place the EBL on it If the extension of its latest tracks is on the EBL it can be a hazar dous one In Fig 34 ship A can be on collision course and ship B will pass clear to starboard EBL Fig 34 Plotting 39 DISPLAYING DATA OPTION H an external Loran C navigator having NMEA 0183 output format is connected LL data 1 own ship s position in latitude and longitude WP stands for waypoint data i e bearing and range to a waypoint selected on the nav aid and SPD data i e own ship s speed are displayed at the lower part of the screen by pressing the w touchpad If a gyrocompass is also connected a waypoint mark is drawn as a dashed ring and a dashed line is drawn from the own ship s position to the waypoint mark Press the touchpad again to cancel the navigation data display 12 YRO 15 5 r Waypoint Mark without WP No Line to Waypoint Bearing to Waypoint M Magnetic bearing T True bearing LL L L Data 24 25 095 IN tude 135919 22 n Ship s Speed Long i tude 5 95 n 45 0 R Range to Waypoint Fig 34 Nav Data on the Sereen No
68. ring 0 to 360 for a guard zone Should ships islands landmasses etc come into the guard zone an alarm will be generated The alarm is very effective as an anti collision aid when using an autopilot or navigating in narrow channels Although the alarm is useful as an anti collision aid it does not relieve the operator of the responsibility to watch out for possible collision situations The alarm should not be used as a primary means to detect possible collision situations Now the procedure to set the alarms 34 Procedure Before setting the alarm ensure the gain is set properly because the audible alarm is triggered when third or forth level quantization echoes come into the guard zone 1 Mentally create the guard zone you want to display on screen See 30 1 2 Designate the upper lower left edge of the guard zone with the cross hair Press the touchpad and the indicator GUARD asterisk blinking appears at the upper right hand side of the screen asterisk indicates the guard zone is partially set but the alarm function has been actuated See Fig 30 2 3 Rolling the trackball clockwise designate the lower upper right edge of the guard zone The guard zone fan shaped now appears on the display screen See Fig 30 3 Note The cross hair may be moved counterclockwise to create a 360 guard zone area doughnut shaped appearance in which case the guard zone is contracted as the cross hair
69. rker VRM Range to Cross Hair VRM Indicator Range to VRM Fig 26 Hange Measurement with Cross Hair and V RM 3l Measurement 9 To measure the bearing of a target pip you can use either the cross hair or the EBL plus cross hair Move the cross hair with the trackball so that the intersection of the cross hair bisects the center of the target Now you can read the bearing at the second lower center of the screen Next press the touchpad The EBL is presented on the screen as a dashed radial line so as to distinguish it from the heading mark and its bearing is shown at the lower left hand side of the screen The bearing measured by the cross hair and or the EBL can be changed between relative bearings abbreviated R and true bearings abbreviated T by pressing the touchpad if a gyrocompass is connected to this radar Relative bearings are relative to the bow of the vessel And true bearings are relative to the True North If a gyrocompass is connected the indicator GYRO and its bearing i e your ship s bearing are always shown at the top of the sereen The bearing to the cross hair varies with trackball operation while the EBL and its indicator remain on the screen until the EBL is reset GYRO Indicator Gyro Bearing MI 15 mmm Cross Hair Target Pip Eleetronie Bearing Line EBL EBL Indieator T Bearing of EBL 5 098 CC oer Bearing of Cross Hain
70. rn the switch upside down Secure the lock nut Attach the label supplied as spare parts to the ramp base 6 Refix the bottom plate to the ramp base 7 Connect the flying connector and fix the ramp base to the top of the display unit with four M6x16 hex bolts removed in step 3 8 Fix the top cover to the bottom of the display unit 9 Fix the unit to the mounting erodi cradle DE P 9 Coach Screws S Mounting Cradle M6x16 hex bolt 4 pcs M8x40 hex bolt Ramp Base 2 pes w d Label SS SCANNER switch Bottom Plate Flying connector P J1354 M3x6 Screw 4 pes Display Unit 44x10 screw 6 pes Cover Fig 10 Overhead Mounting 13 Now comes the wiring part The only wiring necessary is for power connection and the interconnection cable Antenna Connection The interconnection cable from the seanner unit is connected to the back of the display unit Power Connection This radar is designed for 12 24 or 32 volt battery systems No internal wiring changes are needed for input voltages from 10 2 to 40 0Vde 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 0mm square Refer to the figure below for assembly of the power connector supplied as the installation materials i Sheath 1 Strip off 35mm of the vinyl she
71. rule of thumb 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 reflecting properties Since one of the main funetions of radar is to detect other ships the com position of a target ships hull affects the detection range ship whose hull is made of conducting materials such a steel return relatively strong echoes 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 Inversely horizontal and smooth surfaces such as mudbanks sandy beaches gently sloping hills make poor targets because they disperse rather than reflect most of the energy 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 This type of arrangement is used on some radar buoys to increase their detection range INTERPRETING THE DISPLAY In the previous section some of the characteristics and limitations of radar were discussed Now its time to take a look at what you can expect to see on the radar screen What shows up on the screen isn t likely to match exactly what is seen on
72. s Is the antenna plug loose 3 Low sensitivity Is the GAIN setting too low Is the A C SEA setting too high the FTC set to ON Is the BRILL set too low Is the receiver detuned Coarse TUNE setting wrong Is the radome dirty x X X X 4 Heavy noise Is the unit grounded 5 Sweep not rotating Is the SCANNER switch turned Is the antenna plug loose Is the 4 way connector 4802 inside the radome loose MORE EXTENSIVE TROUBLESHOOTING Any replacement of defective parts except for fuse should be carried out by a qualified serviceman The most common troubles you may experience and their possible causes are listed below 52 WARNING AGAINST HIGH TENSION At several places in the unit there are high voltages enough to kill anyone coming into direct contact with them Do not change components or inspect the equipment with the voltage applied A residual charge may exist in some capacitors with the equipment turned off Always short all supply lines to the chassis with an insulated screwdriver or a similar tool prior to touching the circuit Typical Problems Its Causes See to pages 55 and 56 for the parts location 1 Nothing appears on CRT CRT assembly Check if the CRT heater lights up or not If not check fuse F201 2A If it is normal adjust potentiometers VR101 CONT1 and VR204 BRIGHT on the Deflection board Defective SPU board SPU 7880 2 Seanner does not rotate
73. s to clear up the picture This should be done earefully otherwise weak targets may be missed Echoes from ships inside a squall or storm may be obscured if the gain is at its normal setting since the clutter may have masked but not completely echoes from the targets In all cases the gain should be returned to its original position after any temporary reduction is no longer required 28 Adjusting the A C SEA Control 69 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 lower the seanner above the water the further the clutter will extend Sea clutter appears on the screen as a large number of small echoes whieh might affect radar performance see Fig 24A The action of the A C SEA is to reduce the amplification of echoes at short ranges where clutter is the greatest and progressively increase amplification as the range increases so that amplification will be normal at those ranges where sea clutter is not experienced The control is only effective up to a maximum of about 4 miles The proper setting of the A C SEA is such that the clutter is broken up into small dots and small targets become distinguishable If the control is not sufficiently advanced other targets will be hidden in the clutter while if it is set too high sea clutter and targets will both disappear from the screen As a general rule of thumb turn the contr
74. scures a large area of the screen you may use the eg control and or the touchpad to eliminate or reduce the interference The FTC Fast Time Constant circuit works by splitting up these unwanted echoes into speckled pattern making recognition of solid targets easier When only a slight amount of clutter is visible on the screen turn the control elockwise to distinguish target from the clutter heavy storms or partial clutter press the touchpad FTC appears st the upper right hand side of the screen and then adjust the control to reduce the clutter In addition to reducing clutter the touchpad may be used in fine weather to clarify the picture namely to distinguish targets when navigating in confined waters However with the circuit activated the receiver is less sensitive weaker echoes may be missed circuit is switched off by pressing the touchpad again irr Indicator A rain squall FTC circuit ON FTC OFF interference reduced Fig 28 Precipitation Interference Radar Interference Radar interference may occur when in the vicinity of another shipborne radar operating in the same frequency band It usually is seen on the display screen as a large number of bright dots either scattered at random or in the form of dotted lines extending from the center or the edge to the edge or the center of the display screen Fig 29 illustrates interference the form of curved spokes Interfere
75. se protects against overvoltage reverse polarity of the ship s mains or internal fault of the equipment If the fuse has blown first find the problem before replacing it with new one fuse rated for more than 10A must not be used since it may cause serious damage to the equipment OVER FUSING WILL VOID WARRANTY 51 TROUBLESHOOTING In this section troubleshooting is arranged in two parts one for the user and the other for the service shop Basie troubleshooting for user includes simple tests of the equipment which the user can handle such as operation installation and visual checks The More extensive troubleshooting is considerably more complicated and must be done by a qualified technician If something appears wrong with your unit check the equipment referring to the Basic troubleshooting In case the trouble is not found after performing these checks and the unit still appears to be faulty call your electronics technician for service BASIC TROUBLESHOOTING In most cases when the unit fails to operate properly the cause is very simple Before calling for service or sending out the unit for repairs check the following 1 Nothing appears on screen Check that the front panel is illuminated If not check the following Is the battery dead Is the fuse blown Supply voltage is normal Corrosion on battery terminals Poor contact of power cable 2 No echo but numerical and character indicator
76. shore Today the method of determining the distance to a target is much more accurate because of pulse modulated radar Pulse modulated radar determines the distance to the target by calculating the time difference between the transmission of a radar signal and the reception of the reflected echo It is a known fact that radar waves travel at a nearly constant speed of 162 000 nautical miles per second Therefore the time required for a transmitted signal to travel to the target and return as an echo to the source is a measure of the distance to the target Note that the echo makes a complete round trip but only half the time of travel is needed to determine the one way distance to the target This radar automatically takes this into account in making the range calculation The bearing to a target found by the radar is determined by the direction in which the radar scanner antenna is pointing when it emits an electronic pulse and then receives a returning echo Each time the scanner rotates pulses are transmitted in the full 360 circle each pulse at a slightly different bearing from the previous one Therefore if we know the direction in which the signal is sent out we know the direction from which the echo must return Note that the speed of the radar waves out to the target and back again as echoes is extremely fast compared to the speed of rotation of the antenna By the time radar echoes have returned to the scanner the amount of scanne
77. sition See Fig 31 2 2 Press the touchpad and the own ship s position is off centered See Fig 31 3 Note If the cross hair is placed beyond 1 the valid screen area namely the range in use when the touchpad is pressed successive beep tones are generated and the outermost fixed range ring flickers twice even if the fixed range rings are turned off telling you that the eross hair should be placed within the range in use 3 Press the touchpad again to cancel this function 3 Fig 31 Shifting the Display 37 ZOOM FUNCTION The area between own ship and an arbitrary location be doubled with the zoom function This function lets you take a closer look at an area of interest without changing the range in use Note that this function is not available when the shift function is on If you attempt to activate it when the shift function is on successive beep tones are generated informing you of unacceptable key entry Procedure 1 Roll the trackball and move the cross hair STO near the target See Fig 32 1 and 2 EN 2 Press the touchpad to activate the mark t zoom funetion own ship will shift to an opposite position to the cross hair in reference to the screen center thereby Cross Hair producing a doubled screen size for the same range between the own ship the eross hair See Fig 32 3 The message 1 flashes at the top left hand side of the screen
78. ss than the width of the scanner will cause only a small blind sector but a horizontal spreader or erosstrees in the same horizontal plane as the scanner unit would be a much more serious obstruction and the scanner unit would need to be placed well below or above it It is rarely possible to place the scanner unit where a completely clear view in all directions can be obtained Thus the angular width and relative bearing of any shadow sectors should be determined 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 section The scanner unit should be generally mounted as high as possible on the boat to ensure best performance at the maximum range But this is perhaps not as important as might be supposed for a small boat For example increasing the height from 10 feet to 13 feet off the water won t net very much if you are looking for another boat which also only rises 10 feet off the water Doing so would increase the range capability from 7 7 nautical miles to 8 3 nautical miles an inerease that may not be worth the serviceability problems involved in mounting the seanner higher on the boat In addition if your boat is equipped with a radio direction finder its antenna should not be positioned in close proximity to the scanner unit since the DF would be adversely affected separation of more than 2 meters is recommended The compass safe
79. t visible on the CRT To become acquainted with the way the GAIN control works try rotating it between its fully counterclockwise and clockwise position as you observe the display properly set the gain one of the higher ranges 12nm or 24nm should be used the speckled noise background is more apparent on these ranges As you slowly turn the GAIN control clockwise you should be able to see the speckled background appear when the position of the control is between 2 and 3 o clock If you set up for too little gain weak echoes may be missed If you turn the GAIN control too far clockwise yielding too much speckled noise background strong targets may be missed because of the poor contrast between desired echoes and the background noise on the display Fig 23 illustrates examples of gain settings which are too high proper and too low A too high B proper C too low Fig 23 Setting the Gain Control In certain circumstances it is useful to slightly reduce the gain to improve range resolution clear up the picture or reduce clutter caused by rain or Snow 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 radially With reduction in the gain setting the echoes may be made to appear as separate pips on the display screen When sailing or cruising in crowded regions a slight reduction in gain often help
80. te When the output format of an external navigator is not NMEA 0183 but FURUNO CIF format it is necessary to connect a jumper wire to JMP4 on PROCESSOR board SPU 7880 When CIF format is used bearing measurement method Magnetic or True for bearing to waypoint data is not displayed see figure above JMP4 PROCESSOR board 520 7880 Fig 35 Location of JMP4 N Photo No 2620 40 APPLICATION As an aid to navigation radar can be a very valuable tool No other navigation aid can give you the ability to spot vessels coming at you in the fog or tell 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 section covers the characteristics and limitations of radar picture interpretation position fixing with radar and aids to navigation FACTORS AFFECTING MINIMUM RANGE Targets disappearing from the screen when at close ranges can be dangerous For this reason detection of targets at short ranges is very important Minimum range is determined primarily by transmitter pulselength The shorter the transmission time the sooner the return echoes can be received and their distance measured This radar automatically determines the pulselength for both short and long ranges for optimal detection of targets at short as well as long range Sea Return Sea clutter echoes received from waves may hamper detection of targets beyond the mi
81. tor may hide another vessel if she is on a collision course The bearing will remain constant in the shadow area and the approach of the other vessel may remain undetected until it is too late to avoid a dangerous situation 20 Two methods of determining the angular width of a shadow sector are 1 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 a buoy with a reflector as this target is too powerful 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 to 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 revolution In any case an average of several observations of each shadow sector should be taken It is a waste of time to attempt the operation in anything other than very smooth water with little wind 2 Another method is to observe the shadow sector against a background of sea clutter Any shadows show as dark sectors in the clutter See Fig 17 Note that a shadow cannot be fairly estimated in heavy clutter as echoes
82. tracted from the signal Because the beacon s signal travels at the same time as the echo arriving the ship s range to the target can be determined Since the signal will be received only when the scanner is pointing directly at the beacon bearing is shown as well as the range and the vessel s position is thus determined The range and bearing of the racon signal is measured in exactly the same manner as a normal target pip The racon signal appears on the display as either a radial line originating at a point just beyond the radar beacon or as a Morse code signal displayed radially from just beyond the beacon See Fig 49 Note that with the FTC or IR circuit switched on the racon marker line may partially disappear A Coded Racon Signal B Racon Signal Fig 49 Racon Signal Appearance Ramark A similar type of beacon is known as a ramark It transmits continuously on a frequency constantly varying so as to sweep through the entire radar band The ramark signal appears as a radial line from the center of the CRT The radial line may be a continuous narrow line a series of dashes a series of dots or a series of dots and dashes Fig 50 illustrates the appearance of a ramark signal as a dotted line and as a dashed line Although the ramark flash shows only the bearing to the beacon if the ramark is mounted on the coast and this can be also seen on the screen a fix can be obtained from the ramark x M dd A j N 7
83. up before the radar can be operated The time remaining for warm up of the magnetron is displayed at the center of the CRT from 2 29 to 0 01 Press both the and touchpads at the same time to turn the system off SETTING UP After power is applied and the magnetron has warmed up the message ST BY Standby will appear at center of the display screen indicating the radar is ready to transmit However no targets will appear on the screen until the radar is put into transmit by pressing the touchpad TX is short for transmit ST BY the radar is available for use at anytime the scanner is rotating but no radar waves are being transmitted Press the touchpad to begin transmission the display screen will light up and the status of the indicators on the display screen will default to the following ON and all other indicators OFF Fig 22 shows the location of the indicators Additionally the screen brilliance will be medium bright and the heading mark the eross hair the distance bearing to the cross hair and the tuning bar are displayed The ship s heading is also displayed if a gyrocompass is connected When the radar is transmitting any echoes from targets are displayed on the CRT At this time you may want to take a closer look at the display screen Every one degree on the ring is marked by a short dashed line and every ten degrees by longer dashed line Ship s Heading Note 2 if gyro eonneete
84. usting the DIM potentiometer VR5 located behind the VR panel of the display unit See Fig 19 for the location of VR5 A C SEA ADJUSTMENT A C SEA is preadjusted at the factory However if the following conditions are not satisfied with the A C SEA control adjust potentiometer VR3 A C SEA located behind the VR panel of the display unit Fig 19 Procedure 1 Transmit the radar on 12 mile range and adjust the TUNE control 2 Set the controls 2 off EJ off off A C SEA fully CCW min A C RAIN fully CCW min 3 Adjust the GAIN control on the front panel so that a small amount of background noise appears on the screen 4 Turn the A C SEA control fully CW and confirm that no background noise appears in the range of 0 to 3 nm min or 0 to 6 nm max 3 to 6 mile Noise suppressed 19 A C RAIN ADJUSTMENT A C RAIN is preadjusted at the factory However if the following conditions are not satisfied with the A C RAIN control adjust potentiometer VR2 RAIN located behind the VR panel of the display unit Fig 19 Procedure 1 Transmit the radar on 24 mile range and adjust the TUNE control 2 Set the controls A C RAIN fully CW max A C SEA fully CCW min 0 off off off on 3 Adjust the GAIN control so that a small amount of background noise rain clutter appears on the screen 19 to 20 mile 4 Turn control fully E Rain clutter CW a
85. with the trackball The trackball whose motion is followed by the cross hair is used to set an off center position set an expansion area rotate the cursor set a guard zone and measure a target s range and bearing The function of these touchpads can be turned off by pressing and holding a corresponding touchpad for two to three seconds To familiarize yourself with the controls of your unit turn it on presuming that it has already been installed and try operating some of the controls as you review this section The controls described in Turning the Unit On and Off and Setting Up appear in the order they should be operated when turning on the radar 24 i 35 19 T T sage ICC B HAV 35 5 3 2 9B ia F This control keeps the receiver tuned to the transmitter Used to reduce precipitation clutter in drizzle A C RAIN stands for anti clutter rain Used to suppress sea clutter caused by waves A C SEA stands for anti clutter sea Adjusts the sensitivity of the receiver Turns on the system Press this and touchpads simultaneously to turn off the system 21 Sets the radar to either transmit or standby rd wi I T _ Selects the range and touchpads select a higher and lower range respectively 25 Temporarily erases the heading mark Displays erases the fixed range rings Mainly used to suppress precipitatio

Furuno FR-7010D User's Manual

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