Furuno FG-11/200 MARK-3 User's Manual
Contents
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3. 3 4 4 Replacement of Recording Paper This is performed as follows 1 Release the recorder unit lock and pull 6 Insert end of the paper into the slot of the panel towards you the paper take up reel and wind the 2 Turn the rotating disc anti clockwise by paper two or three turns hand until the stylus is clear of the paper 7 Set the paper take up reel over the holder 3 Rotate the paper winding knob clock 8 Reset the tension roller wise to completely roll the paper out of 9 Reset the reel holding screws tightly and the machine See Fig 4 4 lock the recorder unit 4 Loosen the two screws which hold the spools 5 Set the new paper roll over the holder and pull out the paper as shown in Fig 4 5 2 Se Paper Winding Knob Tension Roller Paper Take up Reel Fig 4 5 4 5 Replacement of Batteries Dry cells Batteries will normally have to be replaced after about ten hours operation After opening the cover of the battery case located on the right side pull out the used batteries eight new batteries should be inserted into the battery case taking care of polarity 4 6 Replacement of Transducer The model FG 200 MARK S operates with a transducer of nominal frequency of 200 KHz The transducer is made of barium titanate and it is hard to get all the transducers exactly defined to 200KHz There isa slight variation in working frequency from transducer to transdu
4. cap nut about two turns with a spanner Apply jute paint or putty on threads of the pipe before tightening the nuts External Battery 12VDC Remove inside dry cells when external battery 15 used Transducer See left for plug connection Fig 2 1 ee xi QE j T orc INSTALLATION ru METHOD 28 8 112 OS 2 MIO x 300 61 42 um ENS gt 55 tae s fal AL 5 ERA qiu EUN 1 amp Fx IE i M RS TN ol mr ege me us HULL PLATE x n 4 dod s o 4 NOTE 1 THE 6 iS THE RISING ANGLE 2 THE LENGTH H MUST BE ADJUSTED 96 MORE THAN 140MM 5 THE LENGTH OF THE FASTENING BOLT 5 600 900 WILL BE DECIDED PROPERLY FROM KEEL EI T ERU dud Pr PN 12 WASHER jBsP EE 11 WASHER FOR HULL BsP Fo Le 1 EK 858 MAKER SUPPLY 1 1 IHRU HULL PIPE 3 _ 555 m F 6 WOODEN STAND PINE 2 DOCKYARD SUPPLY FASTENING BOLT 59527 2 MAKER SUPPLY 4 LID FOR BOLT 3 LEVELLING BLOCK QE EASING 0 0 sd LLL L TRANSDUCER 508 66 BaTiOs pod ___ _________ 15 jMATERIAL QTY NOTE ___ Scale TITLE 50KHz TRANSDUCER Dae INSTALLATION FOR C Checked EXTERIOR WOODEN HULL 0077 I DWG No DFE 2017 oes ELA MER Fig 2 2 HULL PLATE 30 m 2 SM 61 2 N Mice 600 900 FROM KEEL 55
5. 0512 242 80 FG 200 MARKA 0 22 44 66 88 or 0 72 144 216 288 0 20 40 60 80FA FG 200 B MARK3 0 40 80 120 160 M 0 120 240 360 480 RECORDING PAPER Dry Electrosensitive Paper P 10 100mm 4 x 15 Meters Effective Width 90mm POWER SUPPLY DC 12V external batteries or built in 8 pieces of dry cells continuously 10 hours Power Consumption 2W approx Built in power supply adaptor available for operation from main input of DC 24V TRANSDUCER ________ LFG 11M3 FG 200 Material Barium Titanate Vibrator Cable Length Type Frequency Beam width 3dB CIRCUITRY Fully silicon transistorized White Line Facilities Output Power 10 Watts Pulselength 1 5 millisec FG 11 M 3 1 0 millisec FG 200M 3 INDICATION Neon Flashing and Graphical or Neon Flashing only DIMENSIONS AND WEIGHT 8 x 12 554 10 Ibs 204 x 298 x 147 mm 4 8kg COMPLETE SET Indicator 1 unit Transducer 1 pc Spare Parts 1 set STANDARD SPARE PARTS Recording paper P 10 4 pcs Recording stylus with holder 1 pc Recording stylus 5 BES Fuse 1A 1 pc Pilot lamp mm CHAPTER 1 PRINCIPLE An echo sounder uses ultrasonic waves to determine the depth to targets such as schools of fish and the seabed he delay time between the transmitted pulse and reception of its echo serves to determine the depth
6. 5 4 N a 2 o ES 3 22 4 P Fig 2 4 2OOKHz TRANSDUCER INSTALLATION FOR EXTERIOR WOODEN HULL Fig 2 3 Dwg 20325 1 To ola 4 i t NOTE THE 15 THE RISING ANGLE THE HULL PLATE CABTYRE CABLE RUBBER MAKER SUPPLY 7 LEVELING BLOCK WOOD 6 WOODEN STAND PINE 1 COCKYARD SUPPLY 5 PACKING RUBBER 4jWASHER JBsPi O r 3 FASTENING NUT 1 MAKER SUPPLY P CASNG __ _ ZOOKHa TRANSDUCER BaTiOs be NO NAME MATERIAL QT Y NOTE PIPE 1 56 FORWARD DIRECTION FIXING BRACKET gt FOR TRANSDUCER TRANSDUCER Fig 2 4 Transducer Side Board Installation DC24V 12V Power Adaptor For operation from external DC24V supply the DC24V 12V power adaptor is avail able to provide regulated DC 12V to the equipment from mains of DC22V to 28V How to install the Adaptor 1 Take the battery case out of the cabinet then disconnect the orange and white lead wires from the case Wooden pect o Through hob pipe Noy beo iae de nfi a Plast Fig 2 5 FRP Transducer Tank Interior Installation 2 Remove the red and white lead wires from the power cable connector 3 Connect the orange lead wire to point O and the white lead wire to point U A Fix t
7. Cleaning of Recorder Unit 4 2 Adjustment of Zero Line As dry electrosensitive paper is used in this If the position of zero line recorded on the set some carbon powder will pile up in the paper shifts from reading of scale as inner mechanism The interior should be shown in Fig 4 1 it be reset by the cleaned every week to avoid carbon build zero line adjuster Loosen the lock screw up and possible malfunction The recorder and move the zero line adjuster right or left can be cleaned with the plastic front panel so that the zero line coincides with the 0 swung forward The front panel is secured point of scale See Fig 4 2 by a ball catch which will release when the As the stylus wears down it will lose contact finger grip is pulled with the paper Proper operation can be restored by pulling the wire thru the tube so that contact is maintained a Zero line positioned b Zero line positioned above 0 of scale below O of scale Fig 4 1a Fig 4 1b Paper reel 7 screws a Zero line adjuster with lock screw Fig 4 2 4 3 How to renew the recording stylus Fig 4 3 shows the location of the recording worn and become shortened correct it by stylus The coiled stylus is fed to the paper withdrawing its end about 10 mm If the through small tube When the stylus has stylus is worn out replace the whole stylus Recording stylus Stylus Stand Stylus Lever ES Fig 4
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9. FURUNO Publication No OM E2213 0J OPERATOR S MANUAL ECHO SOUNDER FG 11 200 MARK 3 FURUNO ELECTRIC LTD NISHINOMIYA JAPAN July 1978 7807500 PRINTED IN JAPAN 5 SPECIFICATIONS Sa 2 Chapter 1 PRINCIPLE Ro bete 3 Chapter 2 4 Chapter OPERATING INSTRUCTION 7 Chapter 4 21 11 Cleaning of Recorder Unit 11 Adjustment of Zero Line 11 How to renew the recording stylus 1 12 Replacement of Recording Paper 12 Replacement of Batteries Dry cells 14 Replacement of Transducer 14 Chapter 5 TROUBLE SHOOTING 15 SCHEMATIC DIAGRAM 17 SPECIFICATIONS FG MARK 3 SERIES DEPTH RANGES TYPE DEPTH RANGES PAPER ADVANCE mm min SOUNDING RATE PPM FG 11 A 0 40 80 120 160 FA MARK 3 0 75 150 225 300 11 8 0 80 160 240 320 FA MARK 3 0 150 300 450 600
10. and other wiring before the fuse is renewed 1 Bad recording stylus neon flash normal 2 Bad contact between the carbon brush and the collector boss 3 Bad amplifier 2 Defective motor or associated circuit Irregular zero line oscillation circuit 1 Noise caused by other electric machine in the boat 2 Bad transducer 3 a maximum gain 1 Low supply voltage 1 Check reed switch and Bad installation or wiring During normal operation little noise appears with 1 Press the Marker Switch and check the contact condition of the recording stylus If the stylus is worn away pull it out 2 Clean the carbon brush and the collector boss completely 3 Repair or replace printed board 1 Check to see whether the rated supply voltage is applied 2 If the number of revolutions decreases and the power con sumption increases replace the motor 1 Replace if defective 2 If the osciilation circuit is faulty no zero line appears Repair or replace the printed circuit board 1 Noise coming from other electric machines is mainly caused by rotating machines such as generators or motors Identify the noisy motor by switching the motors off one at a time Take necessary steps to suppress noise from this motor Trouble Noise continued Remedy Poor sensitivity Readout Error 2 Noise caused by a bad trans
11. cer The shipped echo sounder is properly combined with the transducer and no adjustment is required during the initial installation Upon combining new transducer adjust ment is needed in the recorder unit on the following transformers T108A Local oscillator transformer Oscillator transformer T203bE T R transformer Adjustment is made by properly turning the core of respective transformers When scope and test instruments are available refer to the Service Manual Publication No SM 30595 f the testing instruments are not available take an approximate tuning To increase the working frequency of the transformers turn the core anticlockwise observing the re cording condition To decrease the working frequency turn the core clockwise In both cases the adjustment will and should be within one full turn of the core 14 CHAPTER 5 TROUBLE SHOOTING Trouble Cause Not working 1 Wrong battery polarity at all 2 Defective battery 3 Fuse blown out No recording Pilot lamp lit but motor not rotating ETE T Remedy 1 Check whether the power cable is connected correctly 2 Check the source voltage If sudden voltage drop appears when the source switch is turned on the batteries are defective Replace them with new ones 3 If a fuse is burnt out on account of over current there may be some defect in the set Check the tran sistor Tr105 polarity of battery
12. ducer will appear when its cable becomes defective after lengthy use this case a decrease of sensitivity will be encountered 3 Press transducer cable away from electrical wiring to reduce chance of mutual induction 1 Frequency deviation of the amplifier or the oscillator circuit 2 Low supply voltage 3 Bad transudcer 4 Broken transformers 1101 through T109 1 Incorrect gear motor 2 Incorrect scale and or flasher dial 16 1 If the center frequency of amplifier deviates readjust it and check to see if the rated gain is obtained Adjustment of transmission frequency is accomplished by observing the Lissajous figure Connect the transducer taps 2 and 3 to the vertical input of an oscilloscope and a standard signal generator to the horizontal of same Adjust T201E G and T202A B so that the circular waveform is obtained on the 2 Check the supply voltage to see whether it is within allowance 10 5 15V 3 Replace the transducer 4 Check the transformers and replace them if necessary 1 Check the sounding rate referring to the specifications Replace the gearbox or readout scales if necessary 2 Replace the scale and dial GL 2IiH12373 ONNYNSA 09 2 S Wvgovia 5 2 Q35123H 9 taf Tid BY ti pov 1 04 PUERO 2 3HVN 11 94 NI 0250 LON 72 210 M 11 94 403 349 S3S3HIN3HVd NI 002
13. ec tion of schools of fish close to the seabed The white line circuit consists of the white line amplifier detector and pulse amplifier The signal taken from RF amplifier output is amplified by the white line amplifier and is then detected The pulse amplifier magnifies only those signals larger than the pre set level Therefore when a strong signal such as from the seabed 15 applied the white line output is obtained and fed back to the I F amplifier with reverse phase The amplification of the IF amplifier is reduced and the seabed contour is shown as a thin black line underneath this line is an un recorded area and then the bottom trail Any fish near or on the bottom echo will appear above the thin black line which distinguishes the fish from the bottom Gain Control Transmitter Power Amp Trap Circuit Colpitts Oscllator Multivibrator Local Oscillator Balanced Modulator White Line Circuit I F Amp Reed Switch Trigger Recording Paper Seabed Neon Indicator Dirving Motor Main Input 12V Dry cells or Battery Fig 1 1 E Driver _ Power Amp 1 24V 12V Power Adapter 1 DC 24V Block Diagram for FG 11 200 MARK 3 CHAPTER 2 INSTALLATION Recorder Unit The recorder unit can be fixed in any
14. fference in signal levels Schools of fish close to the seabed can be easily observed by proper setting of the white line control Fig 3 4a The hard seabed provides a wider area of receiver blocking by the white line circuit as in Fig 3 4b Part A and B Fig 3 4b 5 Surface noise Noise appearing near the surface 15 caused by the wake of another boat or aeration Similar noise sometimes appears when a olankton layer or water temperature dif ference thermocline exists 4 Interference gt 7 Effect of rolling and pitching If the vessel rolls and pitches on rough sea the normal sea trace becomes a zigzag sawtooth recording Fig 3 6a 10 6 Induction and interference Noise caused by the induction frorn other electric circuits er interference from other echo sounders may sometimes appear on the recording paper These interferences are recorded on the paper as shown in Fig 3 5 and can be reduced by decreasing the amoli fier gain Induction TEET 8 Effect by sidelobes When the shape of the seabed is steep a ghost image 15 caused by the sidelobe of the beam but this should not cause confu sion as It is lighter than the actual seabed trace Fig 3 68 The effect of the sidelobes also appears on a flat seabed as in Fig 3 6b seabed TA ACA Nei yh aye A dE NND Cu Effect by Sidelobes Fig 3 6b CHAPTER 4 MAINTENANCE 4 1
15. he adaptor with two screws at the place where the battery case had been set 5 Connect the red and white wires of adaptor to and terminals on the power cable connector individually Use the tead wires previously connected to the hattery case Power Cable Connector DC24V Input Fig 2 6 Power Adaptor 6 CHAPTER 3 OPERATING INSTRUCTIONS the controls used in normal operation are arranged the front panel as shown in Fig 3 1 Front Panel 21 Readout Scale Lock i Gain a La White Line I Source amp Control Control Depth Range Switch Fig 3 1 Front View of FG 11 200 Mark 3 1 Source and depth range switch Turn the switch clockwise from off to the desired position There are 4 40 80 Light Trap Flasher Dial x Voltmeter 15 150 150 275 80 160 150 300 40 80 120 240 160 240 240 320 300 450 450 600 44 66 144 216 90 120 Flasher Dial Adjuster ___ Battery Case llumination Switch 66 88 Marker Switch depth ranges with respect to each model and subtype as below fathoms meters 216 288 120 160 240 360 360 480 feet fathoms meters feet 2 Gain control Adjust the Gain Control to obtain a clear cut recording on the paper The sensitivity of the amplifier is varied by turning this k
16. nob Decrease the sensi tivity slightly if much surface noise appears 3 White line control The echo trace of the seabed can be discriminated by a thin black line over a white belt so that fish close to it or in contact with it may be clearly identified 4 Voltmeter This meter indicates the supply voltage Dry cells should be replaced when the meter reads in the red 5 Marker switch When the switch is depressed a dense black line appears on the recording paper Use this function when you want to check the contact condition of the recording stylus or to make reference marking Stylus Lever Recorder Stop Lever 6 Illumination switch If illumination is necessary turn the switch In order to conserve the dry cells leave this switch in the off position until needed 7 Flasher Dial adjuster he neon tube flashes when the trans mitting pulse is emitted and the echo is received Turn the flasher dial adjuster so that the range number in use appears in the small window on the circular dial 8 Independent neon flashing indication with recorder mechanism stopped When no graphical indication 15 required neon flashing can be independently carried out by swinging the plastic front panel forward and sliding the recorder stop lever below the recording plate inside the unit to the left The recording paper will stop running Lift the stylus off the paper by turning the stylus lever as shown bel
17. ow Fig 3 2 Recorder with the front panel opened io Observation of Recordings Seabed Line Fishes White Line Second Echo Third Echo Fig 3 3 Typical Recording 1 Zero line The zero line appears at the upper edge of the recording paper when the depth range switch is set to range 1 and it does not appear when the range switch 15 at the other settings The line shows the position of the radiation surface of the transducer Adjust ment of this line zero set is explained in chapter 4 2 2 Echoes from Schools of Fish The fish echo is usually weaker than the echo of the seabed and the size of the school of fish is ascertained from the den sity of the recording The Gain Control must be adjusted carefully in order to dis criminate between fish and noise 3 Indication of seabed The strongest echo is received from the seabed Under the shallow depth sounding Fish School OFF W L ON gl Fig 3 4a the second or third echo may appear at recurring intervals The intensity of the seabed echo can be used to determine the type of bottom harder the bottom the wider the bottom trace 4 White Line Recordings White line operation is used to discriminate between the seabed and schools of fish close to the seabed Generally the echo from the seabed is very strong compared with echoes from fish The white line circuit is operated by the di
18. place convenient for operation Fix the mounting bracket on a table with 2 woodscrews or bolts and nuts The recorder unit must be connected to the transducer and power supply Power Supply The recorder can be operated from a built in 8 size D dry cell batteries b external 12VDC battery Remove dry cells from the recorder unit c DC24V if a power adaptor is fitted in recorder Transducer The transducer is usually installed on the hull bottom after cutting a small hole in the hull plate Refer to Fig 2 2 and 2 3 For portable operation the transducer may be clamped on the ship s sideboard as NB Eas Ae 2 BLACK TO 1 WHITE TO 3 shown in Fig 2 4 In FRP boat where cutting a hole is riot preferable the trans ducer may be fitted inside the huii see Fig 2 5 In this case sounding capacility is sacrificed Precautions for transducer installation 1 Select a place as far from engine and generator as possible 2 Install the transducer within 900mm 3ft from the keel 3 ship the mid ship position is usually place for the transducer 4 To minimize effect from aerated water praper projection 15 required however within line of the keel s lowest point 5 When tightening the through hull pipe too much pressure may damage the transducer cable Screw tn the lock nut and cap nut by hand then screw in the
19. to the target For instance if the delay time is one second the depth will be found to be 750m 2 500 feet Since the echo received is not strong enough to make recordings by itself it is magnified through the amplifier circuits in order to produce an electrical mark on the paper When the main switch is turned on the magnet located on the driving arm Is revolved by the driving motor and each reed switch on the disc is closed to trigger the transmitter circuit through the mono stable multivibrator There are four reed switches selected by the range switch The transmitter circuit is active while each reed switch is ON and the ultrasonic pulses are emitted into the water Closing of the selected reed switch makes the monostable multivibrator operate and RF energy 15 generated This RF energy after amplifica tion is fed to the transducer and 15 converted into ultrasonic pulses A trap circuit is inserted in the receiver input circuit This circuit disconnects the amplifier circuit during transmission of pulses and connects it during reception of echo signals The ultrasonic pulses are emitted ina specific direction determined by the beam width of the transducer The pulses are reflected by the underwater object and the echoes are received by the same transducer The signals received are changed into electric energy and are then magnified by the amplifier and recorded on the paper The white line circuit facilitates the det
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