Furuno 1932 MARK-2 Radar Detector User Manual
Contents
1. ELECT NTR dus 2 north marker if ONTRO EBL1 EBL2 EBL3 EBL4 TLL Outputs target position data Control Reduces sea clutter HM OF Switch SEA AIC AUTO Automatically reduces sea and Long press Shifts your vessel s O position to cursor location 2 Brief press Doubles size of F1 BRILL Adjusts display brilliance area between your vessel and location selected by cursor STBY Control IX Reduces rain clutter F2 Switch Displaces the EBL origin Sets radar in stand by transmits radar pulse Turns power on off Lights when the economy mode is on Default switch function Figure 2 1 Control panel 2 1 2 2 Turning the Radar On Off Press the POWER key to turn the radar on or off The control panel lights and a timer displays the time remaining for warm up of the mag netron the device which produces radar pulses counting down from 1 30 to 0 01 2 3 Transmitting After the power is turned on and the magne tron has warmed up STBY Stand By ap pears at the screen center This means the radar is now fully operational Press the STBY TX key to transmit When transmitting any echoes from targets appear on the display This radar displays echoes in eight tones of green according to echo strength SPEED Speed 10 5 2 4 Stand by When you won t be using2. OPERATOR S MANUAL MARINE RADAR MODEL 1932 MARK 2 1942 MARK 2 FURUNO ELECTRIC LTD NISHINOMIYA JAPAN A SAFETY INSTRUCTIONS A DANGER Stay away from transmitting scanner The radar scanner emits microwave radiation which can be harmful to the human body particularly the eyes Never look directly into the scanner radiator from a distance of less than 1 m when the radar is in operation Radio Frequency Radiation Hazard The radar scanner emits electromagnetic radio frequency RF energy which can be harmful particularly to your eyes Never look directly into the scanner aperture from a close distance while the radar is in operation or expose yourself to the transmitting scanner at a close distance Distances at which RF radiation levels of 100 and 10 W m exist are given in the table below Note If the scanner unit is installed at a close distance in front of the wheel house your administration may require halt of transmission within a certain sector of scanner revolution This is possible Ask your FURUNO representative or dealer to provide this feature MODEL Radiator Distance to Distance to type 100 W m point 10 W m2 point 1932 MK 2 XN10A Worst case 0 10 m Worst case 1 70 1942 MK 2 XN12A Nil Worst case 1 20 m A WARNING A CAUTION ELECTRICAL SHOCK HAZARD Do not use the equipment for other than Do not open the equipment its intended purpose Only qualified personnel Us
3. For assessment see Statement of Opinion N 00214120 AA 01 of 18 April 2005 issued by Telefication bv The Netherlands Testreports KTL 98323220 of 8 October 1998 and KTL 98323222 of 1 October 1998 issued by KTL Certification The Netherlands Test reports K03 17 173 03 17 174 and K03 17 175 of 5 January 2004 prepared by Furuno Electric Co Ltd On behalf of Furuno Electric Co Ltd Hiroaki Komatsu Nishinomiya City Japan Manager April 20 2005 International Rules and Regulations FURUNO ELECTRIC CO LTD EF U R U N O 9 52 Ashihara Cho Nishinomiya City 662 8580 Hyogo Japan Tel 81 798 65 2111 Fax 81 798 65 4200 Pub NO DOC 797 Declaration of Conformity C 4 0560 We FURUNO ELECTRIC CO LTD Manufacturer 9 52 Ashihara Cho Nishinomiya City 662 8580 Hyogo Japan Address declare under our sole responsibility that the product Marine radar Type Model 1942 MARK 2 Model name serial number is in conformity with the essential requirements as described in the Directive 1999 5 EC of the European Parliament and of the Council of 9 March 1999 on radio equipment and telecommunications terminal equipment R amp TTE Directive and satisfies all of the following rules technical standards and recommendations applicable to the product IEC 60936 1 Amendment 1 Annex D 2002 06 EN 60945 1997 01 IEC 60945 Third edition 1996 11 ITU Radio Regulations Appendix S
4. 2 1942 2 Display Unit Scanner Unit Standard 1 1 m Steering 0 8 m Standard 1 0 m Steering 0 8 m Standard 0 75 m Steering 0 6 m Standard 1 1 m Steering 0 8 m SP 3 Index A Acquisition eee 6 4 2 2 4 ACQ ENTER 6 2 A C RAIN 2 4 A C SEA control 2 3 Auto 6 2 B Bearing measurement 2 6 Blind sectors eene 4 4 cite tete tees 2 3 3 8 BRILL 2 42 2 3 C Course 3 1 alarm 6 6 D Dead 3 8 EBO 2 6 EChO Stretch yii iaa e 3 2 ECHO tall I 3 2 Economy mode 2 2 F Function controls F1 F2 3 8 5 1 G Gain Controles u a a aa 2 3 Guard alarm 3 4 Guard alarm sensitivity 3 5 Guard key sss 3 4 3 5 Guard zone esses 3 4 H Head Up emer 3 1 Heading
5. 4 Check the EBL readout at the bottom left hand corner of the display to find the bear ing to the target 5 To anchor the EBL press the EBL VRM CONTROL key To erase the EBL and its readout press and hold down the EBL VRM CONTROL key about two seconds 6 0 NM 2 0 Target Cursor EBL1 EBL2 Cursor EBL bearing EBL1 bearing 40 0 R EBL1 bearing 435 0 40 0 R 4 0 NM Figure 2 8 How to measure bearing by EBL and cursor Note The bearing readout for the EBL andthe cursor can be displayed in relatiive or true bearing true bearing requires heading sen sor input For north up and course up dis play modes the bearing reference is always true For details see the next chapter Tips for measuring bearing e Bearing measurements of smaller targets are more accurate the center of larger target pips is not as easily identified e Bearings of stationary or slower moving targets are more accurate than bearings of faster moving targets e To minimize bearing errors keep echoes in the outer half of the picture by chang ing the range scale angular difference becomes difficult to resolve as a target approaches the center of the display 2 13 Using the Offset EBL The offset EBL provides two functions pre dict collision course of a radar target and mea sure the range and the bearing between two targets Predicting collision course 1 Operate the omnipad to place the
6. Cursor Range Bearing or L L Position Echo Tailing TRAIL Trailing Time Trailing Elapsed Time Navigation Data navigation input required Heading HDC heading sensor input required NMEA0183 Ver 1 5 2 0 current loop GGA gt RMC gt SRMA gt GLL accept GLL in NMEA Version 1 5 only RMC gt RMA gt VTG gt VHW HDT gt HDG gt HDM gt VHW gt VHW HDM gt HDG gt HDT gt VHW gt VHW RMC gt RMA gt VTG VTG gt RMC gt RMA RMB gt BWC gt BWR RMA gt GLC gt GTD DPT gt DBT gt DBK gt DBS SP 2 Water temperature Time Cross track error 7 Output Data MTW gt MDA ZDA RMB gt XTE gt APB 1 calculate by magnetic drift 0183 Version1 5 2 0 RS 422 TLL target data and RSD 5 ENVIRONMENTAL CONDITION 1 Ambient Temperature 2 Relative Humidity 3 Waterproofing Scanner Unit 25 C to 70 C Display Unit 15 C to 55 C 95 or less at 40 C Scanner Unit IPX6 Display Unit IPX4 6 POWER SUPPLY amp POWER CONSUMPTION 1 Power Supply 2 Voltage and Current 3 Power Consumption 7 DIMENSIONS AND MASS 8 COATING COLOR 1 Display Unit 2 Scanner Unit 12 32 VDC 10 8 to 41 6 VDC 24rpm 12 VDC 7 8A 24VDC 3 9A 32VDC 2 9A 100 kt 48rpm 12 VDC 8 8A 24VDC 4 4A 32VDC 3 3A 70 kt 24rpm 70 W to 90 W 100 kt 48rpm 85 W to 105 W 70 kt See the Outline Drawings Panel N3 0 Chassis 2 5GY5 1 5 N9 5 9 COMPASS SAFE DISTANCE 1 M1932M2 Display Unit Scanner Unit
7. Range Bearing Range and bearing from own ship to the last plotted or selected target position with suffix T True or M Magnetic For true bearings suffix T is used in case of gyrocompass input and suf fix M is used in case of magnetic compass input COURSE SPEED Course Speed Course and speed are displayed for the last plotted or selected target with suffix T True or Magnetic For true bearings suffix is used in case of gyrocompass input and suffix is used in case of magnetic compass input CPA Closest Point of Approach is the closest range a target will approach to own ship Do not mix it with the operator preset CPA alarm limit TCPA The time to CPA measured with present speeds of own ship and the targets Both CPA and TCPA are automatically cal culated When a target ship has passed clear of own ship the CPA is displayed and the TCPA appears as TCPA is counted up to 99 9 min and beyond this it is indicated as TCPA gt 99 9 min 6 5 Mode and Length of Vectors True or relative vector vector mode Target vectors are displayed relative to own ships reading Relative or with reference to North True Own ship does not have a vec tor in relative mode Vector length From the ARP 10 MENU Vector Length can be set to 30 seconds 1 3 6 15 or 30 min utes and the selected vector time is indicated on the screen The vector tip shows an estimated position
8. To tune manually 1 Select Manu by the omnipad 2 Press the ENTER key to enable manual tuning 3 While pressing and holding down the GAIN control operate the omnipad to obtain best tuning condition observing the tuning indicator bar 1 0 11 9V Press the ENTER key MANUAL appears at the top right hand corner when manual tuning is in effect Disp Data Select the down sourse to display Selects data to display Nav ARP or All both Nav and ARP WPT Mark Selects On to display the waypoint marker EBL Ref Selects EBL reference for relative or true VRM Unit Selects distance unit of VRM and cursor for nm km or sm Watchman Turns watchman on set rest period or off STBY Disp Select the display to use at stand by display STBY or navigation data or go into the economy mode Guard Mode Select condition which triggers guard alarm targets entering guard zone In target exiting guard zone out Own Position Select position display format L L on Loarn TD Cursor Posi Display the cursor data in range bearing or lat long Alm Sense LV Select minimam echo strength which triggers guard alarm Dead Sector Select On to display the dead sector Range Select ranges to use Self Test Test keys ROM and RAM checks antenna rotation speed and displays program no Installation Setup Displays to the installation setup menu Note
9. 2 5 l Indirect echoes 4 1 Interference ee 3 3 L Lost target alarm 6 7 M Magnetron airaa a 5 3 5 1 Multiple Echoes 4 1 Men i66 ec ed etos V N Navigation data 2 2 3 6 NOISE eerta einen 3 8 North 2 2000 2 5 North 3 2 OTHERS menu 3 7 OffCenlel 2 7 Offset EBD iet ea 2 6 P POWER 2 2 Presentation mode 3 1 Power 2 2 44222 2 2 Program No 5 3 Pulsewidth 042222 2 3 3 4 Pulselength sss 2 3 R Range key essen 2 3 Range 2 5 Range rings ii 2 5 S SARI eiue 4 2 SELECT CHANCEL key 6 2 Self Test keyboard RAM ROM 5 3 2 3 Shadow Sectors 4 2 Side lobe 4 1 Stand By etc cere 2 2 ST BY TX key sse 2 2 System co
10. 2 to 3 Y Change brill from 3 to max M Change brill from max to Off Figure 3 2 Messages for RINGS menu 4 Press the MENU key to close the menu 3 2 Selecting the Presentation Mode With heading sensor connection this radar provides four presentation modes head up course up north up and true motion 1 Press the MENU key 2 Operate the omnipad to select MODE 3 Press the ACQ ENTER key The display and the display mode indication at the top left hand corner of the display change in the sequence of HU heading up CU course up NU north up and TM true motion when the ACQ ENTER key is pressed If there is no heading sensor con nection the display mode is always HU 4 Press the MENU key to close the menu Note The radar begins operation with last selected display mode except course up whenever the unit is turned on Note how ever that head up is selected when course up was the last used mode Head up The picture is oriented so the heading marker is at the top of the display This mode is use ful for navigation in congested waters Course up The course up mode shows ship s heading by the heading marker at the top of the dis play To get heading desired steer vessel in direction desired and then show CU at the top left hand corner of the display 3 1 North up North is at the top of the display and the head ing marker moves with ship s heading This mode
11. 4 Echo Trail You can show the movement of all radar tar gets relative to your vessel in afterglow This function is useful for alerting you to possible collision situations Starting echo trail 1 Press the MENU key to open the menu 2 Select ECHO TRAIL by the omnipad 3 Select ACTIVATE by pressing the ACQ ENTER key Figure 3 4 How the echo trail feature works TRAIL the echo trail time selected on OTHERS MENU and elapsed time appear at the top right hand corner of the display Then afterglow starts extending from all tar gets Note Trails are restarted when range or mode is changed or zoom or offcenter is turned on Fixed time trail 1 When the elapsed time clock counts up to the trail time selected the elapsed time display freezes 2 The oldest portions of trails are erased so only the latest trail equal in length to the trail time selected is shown 3 Trail continues For example the one minute trail time is se lected When the elapsed time clock counts up to 60 seconds the elapsed time display freezes at 60 but the latest one minute of trail are erased and then trail continuous Continuous trail The maximum continuous trail time is 99 min utes and 59 seconds When the elapsed time clock counts up to that time the elapsed time display is reset to zero and trail begins again Cancelling echo trail Select OFF deactivate at ECHO TRAIL on th
12. ENTER key 4 Press the MENU key to close the menu Setting a guard zone 1 Mentally create the guard zone you want to set Figure 3 8 shows an example 2 Operate the omnipad to set the cursor on point A or B Press the GUARD key G or G OUT with asterisk blink ing appears at the top right hand corner of the display See Figure 3 8 2 The asterisk indicates the guard zone is par tially set 3 Operate the omnipad to set the cursor on point C or D See Figure 3 8 3 4 Press the GUARD key The asterisk dis appears See Figure 3 8 4 Asterisk blinking Guard zone to set Drag cursor here 1 Mentally create the guard zone to set 2 Drag cursor to top left corner of zone and press GUARD Y G IN Drag cursor here 3 Drag cursor to bottom right corner of zone and press GUARD 4 Guard zone completed Figure 3 8 How to set the guard zone Silencing the audible alarm Any radar targets violating the guard zone will trigger the audible alarm You can silence the audible alarm by pressing the GUARD key When this is done G ACKN replaces G IN This means the alarm is acknowl edged Press the key again to reactivate the alarm You may select minimum echo stregth which triggers the guard alarm This can be done at 20 Alm Sence Lv on the OTHER MENU Cancelling the guard zone and guard alarm Press and hold down the GUA
13. Equivalent to NMEA 0183 Option pie Local Supply Display Unit RDP 118 Auto Plotter ARP 10 24 rpm only MODEL 1932 MARK 2 XN10A RSB 0070 064 24 rpm XN10A RSB 0073 064 48 rpm MODEL 1942 MARK 2 XN12A RSB 0070 059 24 rpm XN12A RSB 0073 059 48 rpm Remote Display FMD 811 10A 12 32 VDC External Alarm Buzzer OP03 21 RU 3423 115 230 VAC Note Even though the display unit meets waterproof standard IPX 5 the connection of ex ternal buzzer and or remote display can affect waterproofness Watertight integrity cannot be guaranteed When these modification has been done the display unit should not be mounted where exposed viii 1 PRINCIPLE OF OPERATION 1 1 What is Radar The term RADAR is an acronym meaning Radio Detection And Ranging Although the basic principles of radar were developed dur ing World War Il echoes as an aid to naviga tion is not a new development 1 2 How Ships Determined Position Before Radar Before the invention of radar when running in fog near a rugged shoreline ships would sound a short blast on their whistles fire a shot or strike a bell The 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 indicated the rela tive bearing of the shore 1 3 How Radar Determines Range Ra
14. Every time the scanner rotates some radia tion 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 lobe echoes may be represented on both sides of the true echo at the same range as shown in Figure 4 2 Side lobes show usually only at short ranges and from strong targets They can be reduced through careful reduction of the sensitivity or proper adjustment of the A C SEA Main lobe True echo Side lobe Sprious target Antenna Figure 4 2 Side lobe echoes 4 1 4 3 Indirect Echoes Indirect echoes may be returned from either a passing ship or returned from a reflecting surface on your own ship for example a stack In both cases the echo will return from a legitimate contact to the scanner by the same indirect path The echo will appear on the same bearing of the reflected surface but at the same range as the direct echo Figure 4 3 illustrates the effect of an indirect echo Indirect echoes may be recognized as fol lows they usually occur in a shadow sector they appear on the bearing of the obstruc tion but at the range of the legitimate con tact when plotted their movements are usu ally abnormal and their shapes may indicate they are not di rect echoes Direct E Target Obstruction Scanner mast funnel etc Target True Indirect Indirect echo echo Heading
15. Level 1 and 2 are same brilliance while the menu is displayed The brilliance changes after the menu is erased 3 7 3 11 Function Controls The function controls F1 and F2 work like the auto dialing feature of a telephone auto matically executing the function assigned to them The function can be turned off by press ing appropriate function control again Default settings F1 Shift brief press or Zoom long press F2 Ring brilliance How to register menu items 1 Press the MENU key 2 Press A C SEA F1 or A C RAIN F2 to open the function menu SETTING FOR F1 KNOB Sel by omnipad amp press ENT SHIFT EBL SHIFT ZOOM OFFSET ZOOM DISP ECHO MODE DATA BING TRAIL INT NOISE ECHO REJECT REJ LENGTH STRTCH WATCH SECTOR MAN TRAIL TRAIL ON O TIME TONE ALARM DEAD LEVEL GUARD IN OUT PANEL MARK BRILL CHARA VRM NAV UNIT TALKER MARK VECTOR VECTOR LENGTH REF OWN CUSOR POSITN POSITN HIS COLLI AUTO SION ACQ NO FNCTN Figure 3 11 Function menu 3 Select function desired 4 Press the ACQ ENTER key 5 Press the MENU key to close the menu 3 8 3 12 Suppressing Noise Electrical noise can be suppressed by turn ing on 8 NOISE REJ on the OTHERS menu 3 13 Adjusting Brilliance of Markers 2 Mark Brill on the OTHER menu adjusts the brilli
16. On 4 Press the ACQ ENTER key 5 Press the MENU key to close the menu Terminating Tracking of Targets When the Auto Plotter has acquired 10 tar gets no more acquisition occurs unless tar gets are lost Should this happen cancel tracking of individual targets or all targets by the procedure described below Individual targets Place the cursor on a target which you do not want to be tracked any longer by operat ing the omnipad and press and hold down the SELECT CANCEL key All targets All targets can be canceled from ARP 10 MENU at a time 1 Open the ARP 10 MENU 2 Select 2 All Cancel 3 Press the ACQ ENTER key 6 4 Displaying Target Data The Auto Plotter calculates motion trends range bearing course speed CPA and TCPA of all targets under tracking at the ARP Data area To turn ARP data on 1 Press the MENU key 2 Select DISP DATA Press the ACQ ENTER key to select the message for ARP or NAV or ARP 4 Press the ACQ ENTER key 5 Press the MENU key to close the menu A CAUTION At the speed under 5 kts the target data is displayed with a delay because of filtration Place the cursor on a wanted target and press the SELECT CANCEL key Data on the se lected target is displayed at the bottom of the screen The symbol of the selected target gets twice as large as the normal circle The data includes the following RNG BRG
17. The navigator has the responsibility to check all aids available to confirm position Electronic aids are not a substitute for basic navigational principles and common sense This auto plotter automatically tracks an automatically or manually acquired radar target and calculates its course and speed indicating them by a vector Since the data generated by the auto plotter are based on what radar targets are selected the radar must always be optimally tuned for use with the auto plotter to ensure required targets will not be lost or unwanted targets such as sea returns and noise will not be acquired and tracked A target does not always mean a land mass reef ships or other surface vessels but can imply returns from sea surface and clutter As the level of clutter changes with environment the operator should properly adjust the A C SEA A C RAIN and GAIN controls to be sure target echoes are not eliminated from the radar screen A CAUTION The plotting accuracy and response of this auto plotter meets IMO standards Tracking accuracy is affected by the following Tracking accuracy is affected by course change One to two minutes is required to restore vectors to full accuracy after an abrupt course change The actual amount depends on gyrocompass specifications The amount of tracking delay is inversely proportional to the relative speed of the target Delay is on the order of 15 30 seconds for high relative speed
18. To view the target you can temporarily erase the heading marker and north marker by pressing and holding down the GAIN HM OFF control Release the control to re display the mark ers 44 Heading marker X North marker Figure 2 5 Heading marker and north marker 2 11 Measuring the Range You can measure the range to a target three ways by the range rings by the cursor and by the VRM Variable Range Marker Measuring range by range rings Count the number of rings between the cen ter of the display and the target Check the range ring interval and judge the distance of the echo from the inner edge of the nearest ring Measuring range by cursor Operate the omnipad to place the cursor in tersection on the inside edge of the target echo The range to the target as well as the bearing appears at the bottom of the display Measuring range by VRM 1 Press the EBL VRM SELECT key to cir cumscribe a VRM readout at the bottom right hand corner Each press of the key selects the readout of EBL1 EBL2 VRM1 or VRM2 in that order Figure 2 6 Display bottom showing location of EBL and VRM readouts 2 Press the EBL VRM CONTROL key to enable control of the VRM by the omnipad 3 Operate the omnipad to place the outside edge of the VRM on the inside edge of the target The omnipad must be oper ated within five seconds after pressing the EBL VRM CONTROL key otherwise
19. cursor on the center of the target 2 Press the EBL VRM SELECT key to choose the EBL 1 readout and then press the EBL VRM CONTROL key 3 Press the MENU key select EBL OFF SET from the menu and then press the ACQ ENTER key 4 Press the EBL VRM CONTROL key 5 Oparate the omnipad so EBL1 passes through the center of the target If the target tracks along the EBL towards the center of the display your vessel s position the target may be on a collision course To cancel the offset EBL select EBL OFF SET from the menu and press the ACQ ENTER key 6 0 NM EBL1 origin initial position of target Target moved here EBL VRM EBL1 70 0 R 6 0 NM VRM1 bearing range Figure 2 9 Predicting collision course by using the offset EBL Measuring range and bearing between two targets The procedure which follows shows how to measure the range and bearing between tar get A and target B in Figure 2 10 1 Operate the omnipad to place EBL1 s ori gin cursor on the center of target A 2 Press the EBL VRM SELECT key to choose the EBL1 readout and then press the EBL VRM CONTROL key 3 Press the MENU key select EBL OFF SET from the menu and then press the ACQ ENTER key EBL1 s origin shifts to cursor location 4 Press the EBL VRM CONTROL key 5 Operate the omnipad to bisect target B with EBL1 Check the EBL1 readout to find
20. of the target after the selected vector time elapses It can be valuable to extend the vec tor length to evaluate the risk of collision with any target 6 6 Past Position Display The Auto Plotter displays equally time spaced dots maximum five dots marking the past positions of any targets being tracked If a target changes its speed the spacing will be uneven If it changes course its plotted course will not be a straight line in TM mode To turn past position display an or off do the following 1 Open the ARP 10 menu 2 Select History 3 Select plot enterval among 15 30 sec onds 1 2 3 or 6 minutes Select OFF to erose the past position display 4 Press the ACQ ENTER key 5 Press the MENU key 6 6 6 7 Operational Warnings There are two main situations which cause the ARP 10 to trigger visual and audible alarms CPA TCPA alarm Lost target alarm CPA TCPA alarm A CAUTION The CPA TCPA alarm feature should never be relied upon as a sole means for detecting the risk of collision The navigator is not relieved of the responsibility to keep visual lookout for avoiding collisions whether or not the radar or other plotting aid is in use Visual and audible alarm are generated when the predicted CPA and TCPA of any target become less than their preset limits The au dible alarm continues for 10 seconds The ARP 10 continuously monitors the pre dicted range at the Closest Point of Appr
21. range in creases so amplification will be normal at those ranges where there is no sea clutter Adjusting the A C SEA control The proper setting of the A C SEA should be such that the clutter is broken up into small dots and small targets become distinguish able If the control is set too low targets will be hidden in the clutter while if it is set too high both sea clutter and targets will disappear from the display In most cases adjust the control until clutter has disappeared to lee ward but a little is still visible windward 1 Confirm that the sensitivity is properly ad justed and then transmit on short range 2 Adjust the A C SEA control so small tar gets are distinguishable but some clutter remains on the display Sea clutter at display center Figure 2 3 How to adjust the A C SEA control A C SEA control adjusted sea clutter suppressed Tip for adjusting the A C SEA A common mistake is to over adjust the cir cuit so all the clutter is removed As an ex ample set up for maximum A C SEA You will see how the center of the display becomes dark This dark zone can be dangerous tar gets may be missed especially if the sensi tivity is not properly adjusted Always leave a little clutter visible on the display to be sure weak echoes will not be suppressed If there is no clutter visible on the display turn off the circuit N CAUTION Turn off the A C SEA control when its us
22. the VRM cannot be operated 4 Check the VRM readout at the bottom right hand corner of the display to find the range to the target 5 To anchor the VRM press the EBL VRM CONTROL key To erase the VRM press and hold down the EBL VRM CONTROL key about two sec onds Range 6 0 NM Range ring 20 interval Target Cursor VRM1 VRM range 4 0 NM 3 0 NM VRM2 range 4 0 NM Cursor range Figure 2 7 Measuring range by the cursor range rings and VRM Note You can display the range readout of the VRM and cursor in nautical miles stat ute miles or kilometers For details see the next chapter 2 5 2 12 Measuring the Bearing There are two ways to measure the bearing to a target by the cursor and by the EBL Electronic Bearing Line Measuring bearing by cursor Operate the omnipad to bisect the target with the cursor intersection The bearing to the target appears at the bottom of the display Measuring bearing by EBL 1 Press the EBL VRM SELECT key to cir cumscribe an EBL readout at the bottom left hand corner Each press of the key selects the readout of EBL1 EBL2 VRM1 or VRM2 in that order 2 Press the EBL VRM CONTROL key to enable control of the EBL by the omnipad 3 Operate the omnipad to bisect the target with the EBL The omnipad must be op erated within five seconds after pressing the EBL VRM CONTROL key otherwise the EBL cannot be operated
23. the radar for an extended period but you want to keep it ina state of readiness place it in stand by by pressing the STBY TX key The display shows STBY navigation data or goes into the economy mode depending on menu set ting More on menu operation later Economy mode The CRT can be set to automatically turn it self off when in stand by to reduce power consumption This feature is called the economy mode Power consumption in the economy mode is 28 W When the economy mode is on the lamp next to the POWER key lights Navigation data display during stand by If a navigation aid inputs navigation data to this radar in IEC 61162 format navigation data can be displayed during stand by You can turn the navigation data display on off through the menu Figure 2 2 shows a typi cal navigation data display during stand by TRIP Loe SS 000 3 nn Trip distance since power on DEPTH Depth 125 m TEMPERATURE 17 3 0 4 Temperature TO Waypoint bearing CRS 180 0 Heading Time to go to fx Course TTG 01 08 45 0 M 12 0NM OWN SHIP WPT TO Waypoint gt BRG N RNG Bearing to TO Waypoint LAT Range to TO Waypoint Ju A LON 135 00 00E 30 00 00N Ship s position in latitude and longitude and Loran 36378 1 59096 4 0 3NM TDs XTE Cross Track Error Mark shows d
24. 000 FE DATA2 0000 Program No 0359222 XX XX ROM OK RAM OK EEPROM OK Hours in use 000006 9H Tx hours 000001 1H OK Press MENU for OTHERS menu XX Program Version No Figure 5 1 Self test screen 4 The ROM and RAM are automatically checked If NG No Good appears to the right of ROM or RAM indication contact your dealer for advice ARP 10 TEST results appear only when optional ARP 10 board is mounted 5 To check the keyboard Press any key except the omnipad ACQ and power keys Its corresponding location on the display lights in black if the key is operating properly 6 Press the ACQ key to check the display circuit The following pattern should appear Figure 5 2 Test pattern Press the MENU key to show the brilliance adjustment menu 8 To escape from the selftest press the MENU key N 5 5 Life Expectancy of Magnetron The following table shows the life expectancy of the magnetrons Table 5 3 Life expectancy of magnetrons Model Type Code no Life expectancy 1932 M2 E3571 000 146 867 2 000 3 000 MG4004 000 150 837 POV S Including MAF1421B 000 147 385 stand by 1942 M2 MAF1422B 000 146 871 MG4006 000 150 838 This page is intentionally left blank 6 OPERATION OF ARP 10 OPTION A WARNING No one navigational aid should be relied upon for the safety of vessel and crew
25. 2 nm as the spacing between the SART responses is about 0 6 nm 1125 m to distinguish the SART 2 Turn off the automatic clutter suppression 3 Turn off the Interference Rejector General remarks on receiving SART Radar range scale When looking for a SART it is preferable to use either the 6 or 12 nautical mile range scale This is because the total displayed length of the SART response of 12 or 24 dots may extend approximately 9 5 nautical miles beyond the position of the SART and it is necessary to see a number of response dots to distinguish the SART from other re sponses SART range errors When responses from only the 12 low fre quency sweeps are visible when the SART is at a range greater than about 1 nm the position at which the first dot is displayed may be as mush as 0 64 nm beyond the true po sition of the SART When the range closes so that the fast sweep responses are seen also the first of these will be no more than 150 meters beyond the true position 4 3 This page is intentionally left blank 5 MAINTENANCE amp TROUBLESHOOTING This chapter tells you how to keep your ra dar in good working order Before reviewing this chapter please read the safety informa tion which follows A DANGER Turn off the power before performing any maintenance or troubleshooting procedure Hazardous voltages can shock burn or cause death Only qualified personnel totally famillier with electrical circu
26. 3 Table 2 ITU R Recommendations M 1177 3 SM 1539 SM 1541 and SM 329 9 KSR 142 Annex 1 1985 10 title and or number and date of issue of the standard s or other normative document s For assessment see Statement of Opinion N 00214123 AA 01 of 18 April 2005 issued by Telefication bv The Netherlands Test KTL 98323221 of 1 October 1998 issued KTL Certification The Netherlands Test reports K03 17 176 and K03 17 177 of 5 January 2004 prepared by Furuno Electric Co Ltd On behalf of Furuno Electric Co Ltd Hiroaki Komatsu Nishinomiya City Japan Manager April 20 2005 International Rules and Regulations Place and date of issue FURUNO ELECTRIC CO LTD 9 52 Ashihara cho Nishinomiya 662 8580 JAPAN Telephone 0798 65 2111 Fax 0798 65 4200 Pub No OME 34620 DAMI MODEL1932 1942MARK 2 ESF Elemental Chlorine Free The paper used in this manual is elemental chlorine free FURUNO Authorized Distributor Dealer FIRST EDITION AUG 1998 JAN 19 2006 00080835401 OME34620D60
27. 30 60 seconds for low relative speed Display accuracy is affected by the following Echo intensity Radar transmission pulsewidth Radar bearing error Gyrocompass error Course change own ship or target This ARPA board is not available with 42 rpm radar NOTICE Heading data required for plotting function 6 1 6 1 General The Auto Plotter ARP 10 is an optional cir cuit board which is accommodated in the dis play unit of this radar 24 rpm only radars It requires heading data to function The Auto Plotter permits manual or automatic acquisition and automatic tracking of up to 10 radar targets An internal microprocessor calculates target data such as speed and course and displays the results in alphanu meric data and by vector To ensure the reli ability of the displayed target data the radar must be properly adjusted for minimum sea returns and noise Principal specifications Acquisition and tracking Acquisition of up to 10 targets between 0 2 and 16 nm Automatic tracking of up to 10 acquired targets between 0 1 and 16 nm Vectors Vector length 30s 1 3 6 15 30 min Orientation True velocity or relative ve locity Past positions 5 past positions at intervals of 15 30 s 1 2 3 6 min Visual and audible alarms against targets violating CPA TCPA limits Visual alarm against lost targets Alarm Target discrimination A target measuring about 800 m or more in the radi
28. 7 8 T TRUE VECTOR RANGE 5 36NM SPEED 12 5KT Auto Plotter 15 MIN CPA 2NM TCPA 1235 Data Area Figure 6 2 ARPA display 6 3 6 3 Acquiring Targets Manual acquisition Follow the steps below to manually acquire a target Up to 10 targets can be manually acquired 1 Place the cursor on a target of inter est by operating the omnipad 2 Press the ACQ ENTER key The plot symbol changes its shape accord ing to the status as below A vector appears in about one minute after acquisition indicat ing the target s motion trend If the target is consistently detected for three minutes the plot symbol changes to a solid mark If ac quisition fails the target symbol blinks and disappears shortly thereafter __ SQUARE dotted Immediately after acquisition Plot symbol shown in broken lines 2 SQUARE dotted with a vector One minute after acquisition Vector still un reliable of CIRCLE Solid with a vector 3 minutes after acquisition Plot symbol changes to a solid circle indicating the stable tracking condition LARGE CIRCLE The plot symbol of a target under tracking becomes twice as large as the normal sym bol when the target is selected for data read ing Note 1 The target to be acquired should be within 0 2 to 16 nm from own ship and not obscured by sea or rain clutter for success ful acquisition Note 2 When you want to acquire 11th tar get cancel tracking of the one of less im
29. ENU OTHER MENU Defaut settings Display All Cancel Vector ref Vector Length History CPA SET TCPA SET AUTO ACQ Options 1 Panel Dimmer 1 2 3 4 2 Mark Brill 1 2 3 4 3 HD Mark 1 2 3 4 4 Characters 1 2 3 4 5 Trail Tone Single Multi 6 Int Reject Off 1 2 3 7 Pulselength Short Long 8 Noise Reject Off On 9 Trail Time 15S 30S 1M 3M 6M 15M 30M Cont 10 Tune Auto Manu 11 Disp Data Off Nav ARP All 12 WPT Mark Off On 13 EBL Ref Rel True 14 VRM Unit am km sm 15 Watchman Off 5M 10M 20M 16 STBY DISP Norm Econo Nav 17 Guard Mode In Out 18 Own Position L L TD 19 Cursor Posi B R L L 20 Alm Sense LV Low Mid High 21 Dead Sector Off On 22 Range 1 8 1 4 1 2 3 4 1 1 5 36 48 1932 M2 2 3 4 6 8 12 16 24 36 48 64 1942 M2 23 Self Test 24 Installation Setup 1 Nav Talker All GPS LC 2 Depth Unit m fa ft 3 Temp Unit jC jF 4 Hdg Sensor Magnet Gyro 5 Key Beep Off On 6 Scan Stop Rotate Stop 7 Dead Sector 8 Tune Video Adjustment 9 Heading Alignment 10 Sweep Timing Adjustment 11 MBS Adjustment 12 Ant Height Low Mid High 13 STC Curve Sharp Std Gntl 14 Mode Master Slave 15 Hours in Use 16 TX Hours vi TABLE OF CONTENTS BY INDICATION MARKER Echo trail elapsed time P 3 3 Heading requires heading da
30. RD key until the guard zone disappears Notes on the guard alarm e The alarm is a useful anti collision aid but does not relieve the operator of the re sponsibility to also keep a visual lookout for possible collision situations e When the radar range is less than one half of the guard zone range the guard zone disappears and G IN or G OUT appears in inverse video If this happens raise range to re display the guard zone A target echo does not always mean 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 should properly adjust the A C SEA A C RAIN and GAIN to be sure the alarm sys tem does not overlook target echoes 3 8 Watchman The watchman function periodically transmits the radar for one minute to check for targets in a guard zone If it finds change in the zone from the previous transmission it transmits the radar continuously This feature is useful when you do not need the radar s function continuously but want to be alerted to radar targets in a specific area Tx Stby Tx Stby j i imin 5 100 1min 5 100 20 min 20 min Watchman starts Figure 3 9 How watchman works How watchman works When the time selected for the watchman rest period has elapsed the radar automatically transmits for one minute to check the condi tion inside the guard zone If
31. al or circum ferential direction is regarded as a landmass and not acquired or tracked Echoes smaller than about 800 m are regarded as true tar gets Keys used for auto plotter The ARP 10 uses the following touchpad keys Given below is a brief description of these keys 6 2 MENU opens closes the main menu SELECT CANCEL A long press terminates plotting of the target selected with the cursor and a brief press displays the data of the target selected with the cursor ACQ ENTER Acquires the target selected with the cursor 6 2 ARP 10 MENU Operation The ARP 10 MENU contains the following items Display Turns on off the plot symbols past positions and target data All Cancel Cancels the tracking of all targets Vector Ref Selects relative or true vectors To select your choice open the ARP 10 menu Select 3 Vector Ref to Relative or Ture and then press the ACQ ENTER key Vector Length Selects vector time History Selects past position plot interval CPA Set Selects CPA alarm limit When a target is predicted to come within this limit an audible alarm sounds and at the same time the corresponding target symbol changes to a blinking triangle Note If the preset CPA limit is set at OFF a target which is on collision course will not produce an alarm TCPA Set Selects TCPA alarm limit Auto ACQ Turns on off Auto Acquisition Area Activating the auto plotter To activate the Auto Plot
32. ance of markers other than the head ing marker 3 14 Outputting Target Position Radar target position data can be output toa navaid in IEC 61162 format Select the radar target with the cursor and then press and hold down the TLL key to output the data This function requires position data and head ing signal 3 15 Dead Sector When the scanner is installed at a close dis tance in front of the wheelhouse the radar should be set not to transmit within that area to prevent microwave hazard Ask your FURUNO representative ordealer to provide this feature 4 FALSE ECHOES Occasionally false echoes appear on the screen at positions where there is no target In some cases the effects can be reduced or eliminated The operator should familiarize himself or herself with the appearance and effects of these false echoes so as not to confuse them with echoes from legitimate contacts 4 1 Multiple Echoes Multiple echoes occur when a short range strong echo is received from a ship bridge or breakwater second a third or more ech oes may be observed on the display at double triple or other multiples of the actual range of the target as shown in Figure 4 1 Multiple reflection echoes can be reduced and often removed by decreasing the sensi tivity or properly adjusting the A C SEA True echo Own ship Multiple echo Figure 4 1 Multiple echoes 4 2 Side lobe Echoes
33. at an area of interest 1 Select location with the cursor 2 Press and hold down the F1 A C SEA control about two seconds if its function is set for ZOOM default setting or se lect ZOOM from the menu Zoom appears at the top right corner when the ZOOM function is on Cursor Place cursor 2 Press F1 to zoom where desired Figure 2 12 Zoom function Note Zoom is cancelled when range or pre sentation mode is changed Cancelling zoom Press the F1 A C SEA control again 2 8 3 MENU OPERATION 3 1 Basic Menu Operation The menu mostly contains less often used functions which once preset do not require regular adjustment To open or close the menu press the MENU key You can select items and options from the menu with the omnipad The complete menu appears on page v 1 Press the MENU key to display the main menu Sel by omnipad amp press ENT SHIFT ZOOM EBL OFFSET MODE DISP ECHO DATA STRTCH Change brill OTHER from 3 to max MENU Figure 3 1 Main menu 2 Press the omnipad to select item For example select RINGS A message ap pears at the bottom of the menu window 3 Press the ACQ ENTER key to select set ting Each time this key is pressed the message changes For the RINGS menu the message sequence is as shown below Y Change brill from Off to 1 Y Change brill from 1 to 2 Y Change brill from
34. by a dashed ring with a line extending from it to the screen center appears This marker can be turned on off the OTHER MENU To turn navigation data on or off 1 Press the MENU key 2 Select DISP DATA 3 Press the ACQ ENTER key 4 Press the ACQ ENTER key to select the navigation display 5 Press the MENU key to close the menu ITO HDG 23451 TRAIL maas oP Hy OUT ty ZOOM AG Mn ty QN EBL NETT VRM 345 618 0 048NM 23 0 P 113518 0142 0100 OWN SHIP CURSOR WAYPOINT 341 56 12N 341 29 98N 0 09 NM 135 34 56E 136 35 77E 50 01 SPD 35 0KT TTG 01 00 TTG 00 20 Navigation Data Figure 3 10 Typical navigation data display E Waypoint Marker 3 10 OTHER MENU Description The table below summarizes the OTHER menu Table 3 2 OTHER MENU Description Item Description 1 Panel Dimmer Selects level of panel backlight Mark Brill Selects brilliance of VRM EBL cursor guard zone and WP marker HD Mark Selects brilliance of heading marker Characters Selects brilliance of characters Trail Tone Selects brilliance of echo trails Int Reject Selects level of interference rejection Pulselength Selects pulselength for 1 5 and 3 mile ranges Noise Reject Selects On to reject noise Trail Time Selects the echo trail time Tune Selects automatic or manual tuning
35. dar determines the distance to the target by calculating the time difference between the transmission of a radar signal and the recep tion 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 dis tance 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 automati cally takes this into account in making the range calculation 1 4 How Radar Determines Bearing The bearing to a target found by the radar is determined by the direction in which the ra dar scanner is pointing when it emits an elec tronic pulse and then receives a returning echo Each time the scanner rotates pulses are transmitted in the full 360 degree circle each pulse at a slightly different bearing from the previous one Therefore if one knows the direction in which the signal is sent out one knows the direction from which the echo must return 1 5 Radar Wave Speed and Scanner Rotation Speed 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 ro tation of the scanner By the time radar ech oes have returned to the scanner the amount of scanner rotation after initial tra
36. detects a loss of a tracked target the target symbol becomes a flashing diamond This page is intentionally left blank SPECIFICATIONS OF MARINE RADAR MODEL 1932 1942 MARK 2 1 GENERAL 1 Indication System 2 Range Pulselength PL amp Pulse Repetition Rate PRR PPI Daylight display raster scan 8 tones in monochrome Range nautical miles PL prr 0125 025 os oss r 1s 2 s a e s oe se as se 0 08 ps me h0 b jw tt 08 us 550 Hz on 48 nm range or more Maximum Range MODEL 1932 M2 48 nm MODEL 1942 M2 64 nm 3 Range Resolution 20m 4 Bearing Discrimination 1 99 5 Minimum Range 25 m 0 25 NM range 6 Bearing Accuracy Within 19 7 Bearing Resolution 49 8 Range Ring Accuracy 0 9 of range or 8 m whichever is the greater 2 SCANNER UNIT 1 Radiator Slotted waveguide array 2 Polarization Horizontal 3 Antenna Rotation Speed 24 rpm or 48 rpm nominal 4 Radiator Length 1932 2 100 cm XN10A 1942 2 120 cm XN12A 5 Horizontal Beamwidth 1932 2 2 4 1942 2 1 9 6 Vertical Beamwidth 1932 2 27 1942 2 22 7 Sidelobe Attenuation Within 320 of main lobe less than 24 dB 3 TRANSCEIVER MODULE Outside 320 of main lobe less than 30 dB 1 Frequency 9410 MHz 230MHZz X band 2 Modulation PON 3 Peak Output Power 1932 2 4 kW nominal M1942M2 6 kW nominal 4 Modulator FET Switching M
37. e is not required the control can erase weak targets 2 9 Adjusting the A C RAIN Control reducing rain clutter The vertical beamwidth of the scanner is de signed to see surface targets even when the ship is rolling However by this design the scanner will also detect rain clutter rain snow hail etc in the same manner as nor mal targets Figure 2 4 shows the appear ance of rain clutter on the display Adjusting A C RAIN When rain clutter masks echoes adjust the A C RAIN control This control splits up these unwanted echoes into a speckled pat tern making recognition of solid targets easier Appearance of rain clutter A C RAIN control adjusted rain clutter suppressed Figure 2 4 Effect of A C RAIN Note In addition to reducing clutter the A C RAIN control can be used in fine weather to clarify the picture when navigating in confined waters However with the circuit activated the receiver is less sensitive Therefore turn off the circuit when its function is not required Automatic adjustments of A C SEA and A C RAIN Push the A C AUTO key A C AUTO ap pears at the bottom left hand corner of the display when the A C AUTO circuit is on You can fine tune by adjusting the A C SEA A C RAIN and GAIN controls 2 10 Erasing the Heading Marker North Marker The heading marker or north marker avail able with gyrocompass connection may oc casionally mask a target
38. e menu Changing trail attributes Trail gradation and trail time can be selected on the OTHERS menu Table 3 1 Trail attributes Item in OTHERS menu Description Trails can be shown in single or multiple gradations Multiple paints trails getting thinner with time just like the afterglow on an analog PPI radar Multiple Single Trail time can be set for 15 sec 30 sec 1 min 3 min 6 min 15 min 30 min or continuous Trail Time 3 5 Suppressing Radar Interference Radar interference may occur when near an other shipborne radar operating in the same frequency band as your radar Its on screen appearance is many bright dots either scat tered at random or in the form of dotted lines extending from the center to the edge of the display Figure 3 5 illustrates interference in the form of curved spokes Interference ef fects are distinguishable from normal echoes because they do not appear in the same place on successive rotations of the scanner Figure 3 5 Radar interference Four levels of interference are available in cluding off IR1 IR2 and OFF IR3 pro vides the highest level of rejection 1 Press the MENU key 2 Select OTHERS MENU and press the ACQ ENTER key OTHERS Select item by omnipad and press ENTER key El Pane Dimmer 1 2 3 2 Mark Brill 1 2 3 3 HD Mark 1 2 3 4 Characters 1 2 3 5 Trail Tone Multi 6 Int Reject Off 2 3 7 Pulselength Sh
39. e of the equipment as a stepping stool should work inside the for example can result in personal injury equipment or equipment damage Turn off the radar power No one navigation device should ever be switch before servicing the solely replied upon for the navigation of scanner unit Post a warn a vessel ing sign near the switch indicating it should not be Always confirm position against all available turned on while the scanner aids to navigation for safety of vessel and unit is being serviced crew Prevent the potential risk of being struck by the rotating scanner and exposure to RF radiation hazard Two warning labels are attached to the display unit and scanner unit Do not remove these labels Do not disassemble or modify the If labels are peeling off or are illegible contact equipment a FURUNO agent or dealer r Vs Display Unit gt WARNING N Fire electrical shock or serious injury can Name Warning Label 1 zs a electrical shock do md result ae remove rovar No user serviceable Turn off the power immediately if water leaks into the equipment or the equip NIE ment is emitting smoke or fire Scanner Unit gt Continued use of the equipment can cause Name Radiation Warning WARNING fire or electrical shock Label personnel should wort inside scanner 03 142 3201 0 Code 100 266 890 A Use the proper fuse Fuse rating is shown on the equipment Use of a
40. eceiver Sensitivity 2 3 54 ANM URDU 5 2 2 8 Adjusting the A C SEA Control SON OST reducing sea clutter 2 3 pro PIE EAD Ob Magne Onis es xi 2 9 Adjusting the A C RAIN Control 6 OPERATION OF ARP 10 reducing rain clutter 2 4 2 10 Erasing the Heading Marker OPTION North Marker 2 5 6 1 General gene eR 6 2 2 11 Measuring the Range 2 5 6 2 ARP 10 MENU Operation 6 2 2 12 Measuring the Bearing 2 6 6 3 Acquiring Targets 6 4 2 13 Using the Offset EBL 2 6 6 4 Displaying Target Data 6 5 2 14 Offcentering the Picture 2 7 6 5 Mode and Length of Vectors 6 6 ZNO 2 8 6 6 Past Position Display 6 6 6 7 Operational Warnings 6 6 3 MENU OPERATION 3 1 Basic Menu Operation 3 1 SPECIFICATIONS SP 1 3 2 Selecting the Presentation Mode 3 1 INDEX ect consent IN 1 3 3 Magnifying Long Range Echoes echo rein E 255 RITE 3 2 Declaration of Conformity 3 4 Echo Trall eoe he ret 3 2 MENU TREE MENU KEY RINGS Off 1 2 3 max EBL OFFSET Off On SHIFT Off On ZOOM Off On MODE HU CU NU TM DISP DATA ECHO TRAIL Off On ECHO STRTCH Off ES1 ES2 ARP 10 M
41. er the BRILL key is pressed 2 7 Adjusting Receiver Sensitivity The GAIN control adjusts the sensitivity of the receiver It works in precisely the same manner as the volume control of a broadcast receiver amplifying the signals received The proper setting is such that the back ground noise is just visible on the screen If you set up for too little sensitivity weak ech oes may be missed On the other hand ex cessive sensitivity yields too much background noise strong targets may be missed because of the poor contrast between desired echoes and the background noise on the display To adjust receiver sensitivity transmit on long range and adjust the GAIN control so back ground noise is just visible on the screen 2 8 Adjusting the A C SEA Control reducing sea clutter Echoes from waves can be troublesome cov ering the central part of the display with ran dom signals known as sea clutter The higher the waves and the higher the scan ner above the water the further the clutter will extend Sea clutter appears on the dis play as many small echoes which might af fect radar performance See the left hand figure in Figure 2 3 When sea clutter masks the picture adjust the A C SEA control to reduce the clutter How the A C SEA control works The A C SEA control reduces the amplifi cation of echoes at short ranges where clut ter is the greatest and progressively increases amplification as the
42. er we are achieving our purposes Thank you for considering and purchasing FURUNO equipment Features Your radar has a large variety of functions all contained in a remarkably small cabinet The main features of the MODEL 1932 1942 MARK 2 are e Traditional FURUNO reliability and qual ity ina compact lightweight and low cost radar Durable brushless scanner motor e On screen alphanumeric readout of all op erational information e Standard features include EBL Electronic Bearing Line VRM Variable Range Marker Guard Alarm Display Off Cen ter and Echo Trail e Watchman feature periodically transmits the radar to check for radar targets which may be entering the alarm zone e Ship s position in latitude and longitude and Loran C Time Differences range and bearing to a waypoint and ship s speed heading course can be shown in the bot tom text area Requires a navigation aid which can output such data in IEC 61162 format Zoom feature provided Optional Auto Plotter ARP 10 acquires and automatically tracks 5 targets plus 5 targets manually or 10 targets manually TABLE OF CONTENTS FOREWORD 2 5 eeeeruree lii 3 5 Suppressing Radar Interference 3 3 3 6 Selecting Pulsewidth 3 4 MENU TREE 4 3 7 Guard aeos 3 4 TABLE OF CONTENTS BY 3 8 Walchifialibcs eodd cor alien beet 3 5 INDICATION MARKER vi 3 9 D
43. et the desired range and bearing for a guard zone When ships islands landmasses etc violate the guard zone an audible alarm sounds and the offending target blinks to call the operator s attention N CAUTION The guard alarm is a useful anti collision aid but does not relieve the operator of the responsibility to also keep a visual lookout for possible collision situations The alarm should never be used as the sole means for detecting possible collision situations Selection of guard zone type The guard alarm can be set to sound when a target either enters or exits the guard zone You can select which type of guard alarm you want through the menu In alarm The alarm sounds on targets entering the guard zone G IN appears at the top right hand corner when the In alarm is selected Out alarm The alarm sounds on targets exiting the guard zone OUT appears at the top right hand corner when the Out alarm is selected Dashed line noalam E i 1 s 1 E JI i 7 gt lt 2 Me ge Guard IN ALARM OUT ALARM Figure 3 7 In and Out alarms Selecting guard zone type 1 Press the MENU key select OTHERS MENU and then press the ACQ EN TER key 2 Select 17 Guard Mode and In alarm on target entering zone or Out alarm on target exiting zone by operating the omnipad 3 Press the ACQ
44. ethod 5 Intermediate Frequency 60 MHz 6 Tuning Automatic or manual 7 Receiver Front End MIC Microwave IC SP 1 8 Bandwidth 9 Duplexer 4 DISPLAY UNIT 1 Indication System 2 Picture Tube Tx pulselength 0 08 us and 0 3 us 25 MHz Tx pulselength 0 8 us 3 MHz Circulator with diode limiter PPI Daylight display raster scan 8 tones in monochrome 10 inch rectangular monochrome CRT effective display area more than 150 mm 3 Range Range Interval Number of Rings 1 0125 025 o s 075 1 1 5 2 3 4 6 s 2 16 24 se as 64 Ring Interval NM 00625 01250125 025 o25 so 1 12 2 3 4 6 12112116 Maximum Range 4 Markers 5 Alphanumeric Indications 6 Input Data Own ship s position Speed Heading True Heading Magnetic Course True Course Magnetic Waypoint Range Bearing Loran time difference Water depth MODEL 1932 M2 48 nm MODEL 1942 M2 64 nm Heading Line Bearing Scale Range Rings Variable Range Marker VRM1 VRM2 Electronic Bearing Line EBL1 EBL2 Tuning Bar Cursor Parallel Cursor Alarm Zone Waypoint Mark navigation input required North Mark heading sensor input required Range Range Ring Interval Pulselength SP MP LP Display Mode HU CU NU TM Interference Rejection IR 1 IR2 IR3 VRM 1 2 EBL 1 2 Automatic A C SEA A C AUTO Stand by ST B Y Radar Alarm G IN G OUT G ACKN Echo Stretch ES1 ES2
45. he radar display thus a line of 12 dots equally spaced by about 0 64 nautical miles will be shown When the range to the SART is reduced to about 1 nm the radar display may show also the 12 responses generated during the fast sweeps These additional dot responses which also are equally spaced by 0 64 nm will be interspersed with the original line of 12 dots They will appear slightly weaker and smaler than the original dots Screen A When SART Screen B When SART is distant i is close Lines of 12 dots are displayed in concentric arcs Radar antenna beamwidth 24 NM aN Echo of SART 1 5NM SART Position of SART Own ship s position Own ship s position SART mark length SART Radar receiver A bandwidth A Low speed sweep signal Sweep start High speed sweep signal Figure 4 5 SART display Echo of Position of Showing SART marks on the radar display To show the SART marks only on the radar display detune the radar receiver manualy This erases or weakens all normal radar ech oes but the SART marks are not erased be cause the SART response signal scans over all frequencies in the 9 GHz band When the radar approaches the SART in operation the SART marks will enlarge to large arcs blur ring a large part of the screen Reduce the sensitivity and adjust the sea clutter control of the radar Summary to detect SART response 1 Use range scale of 6 or 1
46. irection and amount of error Figure 2 2 Typical navigation data display during stand by 2 2 Note1 Availability of a particular display item depends on incoming data Note2 When Range to Waypoint reaches 0 1 nm the WPT marker jumps to dead ahead even though a difference may exist between heading and BRG to WPT Note3 When cross track error exceeds 1 nm on either side the XTE mark starts blinking 2 5 Selecting the Range The range selected automatically determines the range ring interval the number of range rings pulselength and pulse repetition rate for optimal detection capability in short to long ranges You can select which ranges and pulselength for 1 5 and 3 mile ranges to use through the menu The range range ring interval and pulselength appear at the top left hand cor ner of the display To select a range Press the RANGE key The range and range ring interval appear at the top left cor ner of the display Tips for selecting the range e When navigating in or around crowded harbors select a short range to watch for possible collision situations f you select a lower range while on open water increase the range occasionally to watch for vessels that may be heading your way 2 6 Adjusting Picture Brilliance The BRILL key adjusts the brilliance of the radar picture in sixteen levels The current level momentarily appears on the screen whenev
47. is useful for determining ship s posi tion and as a navigation monitor on a nauti cal chart The picture is stabilized against yaw of vessel thereby reducing smear of target echoes True motion True motion displays own ship and moving objects in their true motion 3 3 Magnifying Long Range Echoes echo stretch Normally the reflected echoes from long range targets appear on the display as weaker and smaller blips even though they are compensated by the radar s internal cir cuitry The echo stretch function magnifies these small blips in all ranges Two types of echo stretch are available ES1 which stretches echoes in bearing direction and ES2 which stretches them in both range and bearing directions To turn the echo stretch on or off 1 Press the MENU key to open the menu 2 Select ES 3 Each press of the ACQ ENTER key changes the echo stretch function status in the sequence of ES1 ES2 and OFF ES1 or ES2 appears at the top right hand corner of the display when echo stretch is on Bearing direction Bearing direction Range direction Echo stretch 2 Echo stretch 1 Figure 3 3 Echo stretch 3 2 Note1 This function magnifies not only tar gets but also sea clutter and radar interfer ence For this reason be sure the sea clutter and radar interference are sufficiently sup pressed before activating the echo stretch Note2 ES2 is not available on short range 3
48. isplaying Navigation Data 3 6 3 10 OTHER MENU Description 3 7 SYSTEM CONFIGURATION vii A p 3 8 3 12 Suppressing Noise 3 8 1 PRINCIPLE OF OPERATION 3 13 Adjusting Brilliance of Markers 3 8 1 1 What is 1 1 3 14 Outputting Target Position 3 8 1 2 How Ships Determined Position 3 15 Dead Sector oe cese s 3 8 Before Radar esee 1 1 1 3 How Radar Determines Range 1 1 4 FALSE ECHOES 1 4 How Radar Determines Bearing 1 1 4 1 Multiple 4 1 1 5 Radar Wave Speed and Scannner 4 2 Side lobe Echoes 4 1 Rotation 1 1 d p WM EO 1 6 The Radar Display 1 1 4 3 Indirect Echoes 4 2 e qa AT S 4 4 Blind and Shadow Sectors 4 2 2 BASIC OPERATION 4 5 SART Search and Rescue Transponder 4 3 2 1 Control Description 2 1 2 2 Turning the Radar On Off 2 2 5 MAINTENANCE amp TROUBLE 2 3 Transmiltifig 2 2 SHOOTING 2 4 Stand by lebe ie 2 2 5 1 Preventive Maintenance n 5 1 2 5 Selecting the al 5 2 Replacing the Fuse 5 1 2 6 Adjusting Picture Brilliance 2 3 5 3 Troubleshooting 5 2 2 7 Adjusting R
49. its should work inside the units RF RADIATION HAZARD The radar scanner emits high frequency radio radiation which can be harmful particularly to your eyes Never look directly into the scanner from a distance of less than two feet when the radar is in operation as you could injure the cornea of your eyes Always make sure the radar is set to stand by or is turned off before starting work on the scanner unit 5 1 Preventive Maintenance Regular maintenance is important for good performance Always keep the equipment as free as possible from dirt dust and water splashes Make sure all screws securing the components are properly tightened A maintenance program should be estab lished and should at least include the items listed in Table 5 1 5 2 Replacing the Fuse The fuse in the power cable protects the equipment against reverse polarity of ship s mains overcurrent and equipment fault If the fuse blows find the cause before replac ing it Never use an incorrect fuse serious damage to the equipment may result and void the warranty 12V 10A fuse 24 32V 5A fuse A CAUTION Use the proper fuse Use of a wrong fuse can result in equipment damage Table 5 1 Hecommended maintenance program Period Item Check point Remarks 3to 6 Exposed Check for corroded or loosened Sealing compound may be used months nuts and nuts and bolts If necessary instead of paint Apply a small bolts on c
50. lean and repaint them thickly amount of grease between nuts scanner unit Replace them if heavily and bolts for easy removal in corroded future Scanner Check for dirt and cracks on Do not use plastic solvent radiator radiator surface Thick dirt should acetone for cleaning If you be wiped off with soft cloth need to remove ice from scanner dampened with fresh water If a unit use a wooden hammer or crack is found apply a slight plastic head hammer Crack on amount of sealing compound or the unit may cause water adhesive as a temporary ingress causing serious remedy then call for repair damages to internal circuits 6 months Display unit Check for tight connection and If corroded contact your dealer to 1 year connectors corrosion for replacement 5 1 5 3 Troubleshooting Table 5 2 contains simple troubleshooting procedures which you can follow to try to re store normal operation If you cannot restore normal operation do not attempt to check inside any unit of the radar system Any re pair work is best left to a qualified technician Table 5 2 Troubleshooting table If you pressed the POWER key to turn on the radar But the control panel does not light nothing appears on the display or display contrast is poor Then try adjusting the control panel back lighting on the OTHERS menu battery may have discharged check fuse in power cable try adjusting the bril
51. liance characters are distorted request service the radar has warmed up and you pressed the STBY TX key to transmit the scanner does not rotate the problem may be in scanner unit Request service characters and indications are abnormal have a qualified technician check the set you have adjusted the gain with A C RAIN and A C SEA off neither noise nor targets appear indications and markers do check signal cable for damage neither indications nor markers appear noise and targets do check signal cable for damage the sweep radial line sweeping around the display is not synchronized with scanner rotation the problem may be in the scanner unit Request service there is no change in sensitivity request service a key is pressed nothing happens key may be faulty Request service 5 2 5 4 Self Test The self test facility checks the keyboard ROM and RAM for proper operation 1 Press the MENU key 2 Select OTHER MENU 3 Select 23 Self Test and press the ACQ ENTER key The following display appears Self Test Key tset Press each key and check on screen indication ARP 10 TEST i ROM 18990871xx IRAM SPEED NAVO OKT COURSE OK 167 6 TRIGGER NG 0003 SCAN TIME 0854 MAN ACQ AUTO ACQ FE DATA1 0
52. marker Indirect Indirect echo echo Figure 4 3 Indirect echoes 4 2 4 4 Blind and Shadow Sectors Funnels stacks masts or derricks in the path of antenna may reduce the intensity of the radar beam If the angle subtended at the antenna is more than a few degrees a blind sector may be produced Within the blind sector small targets at close range may not be detected while larger targets at much greater ranges may be detected See Figure 4 4 Yessel taller Mast etc in th J TS path of radar What beam Whar Blind sector f echo Size of blind sector depends on target sie and range Figure 4 4 Blind and shadow sectors 4 5 SART Search and Rescue Transponder A Search and Rescue Transponder SART may be triggered by any X Band 3 cm ra dar within a range of approximately 8 n miles Each radar pulse received causes it to trans mit a response which is swept repetitively across the complete radar frequency band When interrogated it first sweeps rapidly 0 4 S through the band before beginning a rela tively slow sweep 7 5 es through the band back to the starting frequency This process is repeated for a total of twelve complete cycles At some point in each sweep the SART frequency will match that of the inter rogating radar and be within the pass band of the radar receiver If the SART is within range the frequency match during each of the 12 slow sweeps will produce a response on t
53. nfiguration vii T TEAK CY iacit ent 3 8 e tttm 3 3 3 3 Transmitting raient 2 2 Troubleshooting 5 3 V Vector length 6 6 Vector mode 6 6 CT 2 5 3 5 2 2 8 IN 1 Pub NO DOC 796 Declaration of Conformity C 0560 We FURUNO ELECTRIC CO LTD Manufacturer 9 52 Ashihara Cho Nishinomiya City 662 8580 Hyogo Japan Address declare under our sole responsibility that the product Marine radar Type Model 1932 MARK 2 Model name serial number is in conformity with the essential requirements as described in the Directive 1999 5 EC of the European Parliament and of the Council of 9 March 1999 on radio equipment and telecommunications terminal equipment R amp TTE Directive and satisfies all of the following rules technical standards and recommendations applicable to the product IEC 60936 1 Amendment 1 Annex D 2002 06 EN 60945 1997 01 IEC 60945 Third edition 1996 1 1 ITU Radio Regulations Appendix S3 Table 2 ITU R Recommendations M 1177 3 SM 1539 SM 1541 and SM 329 9 KSR 142 Annex 1 1985 10 title and or number and date of issue of the standard s or other normative document s
54. nsmission of the radar pulse is extremely small 1 6 The Radar Display The range and bearing of a target is displayed on what is called a Plan Position Indicator PPI This display is essentially a polar dia gram with the transmitting ship s position at the center Images of target echoes are re ceived and displayed at their relative bear ings 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 1 1 1 2 Targets Heading marker Range and bearing of a target relative to own ship are readable on the PPI Own ship radar in center A Bird s eye view of situation B Radar picture of A Figure 1 1 How radar works 2 BASIC OPERATION 2 1 Control Description Requires Auto Plotter ARP 10 Brief press Displays the data of target selected with the cursor Long press Terminates plotting of the target selected with the cursor Omnipad Shifts cursor VRM and EBL selects items and options on menu 1 Acquires the target selected with the ominipad Requires SELECT Auto Plotter ARP 10 Opens closes menus CANCEL ENTER 2 Registers selection on menus Selects MENU Sets guard zone area EBL1 EBL2 VRM1 VRM2 Control RANGE Selects radar range Adjusts sensitivity M ve Switch Temporarily erases heading
55. oach CPA and predicted time to CPA TCPA of each tracked target to own ship When the predicted CPA of any target be comes smaller than a preset CPA alarm range and its predicted TCPA less than a preset TCPA alarm limit the ARP 10 releases an audible alarm In addition the target plot sym bol changes to a triangle and flashes together with its vector The flashing of the triangle plot symbol and vector remain on the screen un til the dangerous situation is no longer present or you intentionally terminate tracking of the target by using the SELECT CANCEL key Provided that this feature is used correctly it will help prevent the risk of collision by alert ing you to threatening targets It is important that GAIN A C SEA A C RAIN and other radar controls are properly adjusted and the Auto Plotter is set up so that it can track tar gets effectively CPA TCPA alarm ranges must be set up prop erly taking into consideration the size ton nage speed turning performance and other characteristics of own ship Follow the steps shown below to set the CPA TCPA alarm ranges 1 Open the ARP 10 MENU 2 On the CPA Set line select a CPA limit desired Off 0 5 1 2 3 5 6 nm 3 Press the ACQ ENTER key 4 On the TCPA Set line select a TCPA limit desired 30s 1 2 3 4 5 6 12M 5 Press the ACQ ENTER key 6 Press the MENU key to close the menu Lost target alarm When the system
56. ort Long 8 Noise Reject On 9 Trail Time 15S 30S 1M 3M 6M 15M 30M Cont 10 Tune Manu 11 Disp Data Off Nav ARP All 12 WPT Mark 13 EBL Ref True 14 VRM Unit km sm 15 Watchman 5M 10M 20M 16 STBY Disp Out TD L L 17 Guard Mode 18 Own Position 19 Cursor Posi will will Rel Econo Nav 20 Alm Sense LV Mid Hig 21 Dead Sector On 22 Range 1 oa 2 4n 8 16 Kae 23 Self Test 24 Installation Setup Max range 1932M2 48 1942 2 64 Figure 3 6 OTHERS menu 3 3 3 Select 6 Int Reject 4 Select level desired by operating the omnipad 5 Press the ACQ ENTER key 6 Press the MENU key to close the menu IR1 IR2 or IR3 appears at the bottom right corner on the display when the interference rejection circuit is turned on 3 6 Selecting Pulsewidth Pulsewidth is the time in microseconds nec essary to transmit a single radar pulse The longer the pulsewidth the greater the direc tion range capability however range accu racy and range resolution are reduced Pulsewidth can be selected to short or long on the 1 5 and 3 nautical mile ranges 1 Press the MENU key 2 Select OTHER MENU and press the ACQ ENTER key 3 Select 7 Pulselength 4 Select Short or Long by pressing the omnipad 5 Press the ACQ ENTER key to select 6 Press the MENU key to close the menu 3 7 Guard Alarm The guard alarm allows the operator to s
57. por tant targets 6 4 Note 3 When the auto acquisition mode Auto ACQ is on up to five targets can be acquired For details see next section titled Automatic Acquisition A CAUTION When a tracked target nears another tracked target the targets may be swapped When two targets come close to each other one of the two can become a lost target Should this happen reacquisition of the lost target is required after the two targets have separated Automatic acquisition The Auto Plotter ARP 10 can acquire up to five targets automatically by setting the Auto Acquisition area predefined in the system If Auto ACQ is selected after more than five tar gets have been manually acquired only the remaining capacity of targets can be auto matically acquired For example when seven targets are acquired manually and then the Auto ACQ is switched on only three targets can be acquired automatically When five targets have been automatically ac quired AUTO TARGET FULL message appears at top left corner on the display Setting auto acquisition area Auto acquisition area is predefined between 2 0 and 2 5 nm in range and 45 on either side of the heading marker in bearing If a target come into this area it is acquired au tomatically Figure 6 3 Auto acquisition area Follow the steps shown below to activate the auto acquisition area 1 Open the ARP 10 MENU 2 Select 8 Auto ACQ 3 Select
58. ta Heading marker P 2 5 Tuning indicator P 3 7 Echo trail time P 3 3 Guard Zone P 3 4 Zoom P 2 8 i HDG 284 5 TRAIL LO Range P 2 3 125NM eps 25 38 30M Echo Stretch P 3 2 enm Range ring interval P 2 3 0625 I fw SOM Pulselength P 2 3 SP MN 1 Display mode P 3 1 HU d y y QFFCENTER Off center P 2 7 S 2 AT 7 2 5 2 6 s E NC i rd Pd N 5 i D 7 N Guard zone area P 3 5 5 4 7 oe 2 628 3 r EBL1 P 2 6 VRM1 P 2 5 4 i Range ring P 2 3 2 5 3 2 2 5 z 2 Z Pi i 2 N d 7 ES s 2 AE 2 Ss P s 7 4 North marker 2 5 2 He M uy NT AIC AUTO P 2 4 AUTO ny NU m b P EBL 0 EBL1 bearing 2 6 345 6 R EBL2 bearing P 2 6 23 0 R CBE ae 0 100NM Cursor bearing P 2 6 Cursor range P 2 5 vii Interference rejector P 3 3 i VRM1 range 2 5 VRM2 range P 2 5 SYSTEM CONFIGURATION Scanner Unit 1 FURUNO Navigation device IEC 61162 In Out IEC 61162 I Video Sounder PH Ceu pe bec See Integrated Heading Sensor PG 1000 12 VDC 24 32 VDC 5A
59. ter follow the steps shown below 1 Adjust the GAIN A C SEA and A C RAIN controls for proper radar picture 2 Press the MENU key to open the main menu 3 Select ARP 10 MENU 4 Press the ACQ ENTER key to display the ARP menu Select On Select the menu item 1 Display Press the ACQ ENTER key O dam Press the MENU key to close the menu ARP MENU Select item by omnipad and press ENTER key Display Off 2 All Cancel 3 Vector Ref Rel 4 Vector Length 30S IM 3M 6M 15M 5 History Sj l 155 30S 1M 2M 3M 6M 6 CPA Set 0 5 1nm 2nm 3nm 5 nm 6nm 7 TCPA Set qe 1M 2M 3M 4M 5M 6M 12M 8 Auto ACQ On Figure 6 1 ARP Menu Mark Lost Target Deactivating the auto plotter To deactivate the Auto Plotter 1 Open the ARP 10 MENU Select Off ue dq Target under auto tracking but not selected for cursor data reading HDG 8 NM H 0 SN SN S S SM N 2 AUTOTARGET y Target Full 1 sr 7 TRAIL 234 5 eee LT 7 Select the 1 Display Press the ACQ ENTER key Press the MENU key to close the menu Target selected for data reading Auto Acquisition Area Threatening target AUTO A Aem EBL 345 6 R 0 048 Aog 18 amp 5 R 0 142NM 9 048NM BEARING 42 5 T COURSE 28
60. the bearing between target A and target B 6 Press the EBL VRM SELECT key to choose the VRM1 readout Operate the omnipad to place the outside edge of VRM1 on the inside edge of target Check the VRM1 readout to find the range between target A and target B 7 Tocancel the offset EBL select EBL OFF SET from the menu and then press the ACQ ENTER key Offset EBL EBL1 EBL1 VRM1 See VRM EBL1 70 0 4 5 NM VRM1 bearing range Figure 2 10 Measuring the range and bearing between two targets by using the offset EBL 2 14 Offcentering the Picture Your vessel s position can be offcentered to 7596 of the range in use to view the situation around your vessel without changing the range or size of targets 1 Pressthe omnipad to set the cursor where desired 2 Pressthe F1 A C SEA control if its func tion is set for SHIFT default setting or select SHIFT from the menu OFFCENTER appears at the top right corner of the display when the picture is offcentered LA Cursor 2 Press F1 to offcenter display CD Pleace cursor where desired Figure 2 11 Offcentering the picture Cancelling offcentered picture Press the F1 A C SEA control if function is SHIFT 2 15 Zoom The zoom feature allows you to double the size of the area between your vessel and any location within the current range to take a closer look
61. there is no change the radar goes into stand by WATCHMAN appears during stand by If there is change the radar sounds the audible alarm cancels the watchman function and transmits continuously 3 5 Turning on watchman 1 Create a guard zone usually 360 de grees with the guard alarm function Press the MENU key Select OTHERS MENU Press the ACQ ENTER key Select 15 Watchman O de dum Operate the omnipad to select watchman rest period 5 minutes 10 minutes or 20 minutes 7 Press the ACQ ENTER key 8 Press the MENU key to close the menu WATCHMAN appears at the top of the screen the radar transmits for one minute to check for targets inside the guard zone and then the CRT shuts off and the radar goes into stand by Cancelling watchman Go into the OTHERS menu and set 15 Watchman for OFF Note 1 Watchman can be used without a guard zone Note 2 The alarm sounds just before the ra dar starts or stops transmitting 3 9 Displaying Navigation Data Navigation data can be displayed at the screen bottom if this radar receives naviga tion input in IEC 61162 format Navigation data includes e Position in latitude and longitude or Lo ran C time differences e Range bearing and time to go to both waypoint selected on the navigator and the cursor e Speed 3 6 If the navigation input includes destination data the waypoint marker shown
62. wrong fuse can result in equipment damage Keep heater away from equipment Heat can alter equipment shape and melt the power cord which can cause fire or electrical shock COMPLIANCE WITH R amp TTE DIRECTIVE 1999 5 EC This radar complies with the R amp TTE Directive 1999 5 EC In accordance with Article 6 3 of this directive FURUNO intends to put this radar on the market of the following countries in EU as well other markets Austria Belgium Cyprus Denmark Estonia Finland France Germany Greece Hungary Ireland Italy Latvia Lithuania Malta Poland Portugal Slovenia Spain Sweden The Netherlands United Kingdom Iceland Norway FOREWORD Congratulations on your choice of the FURUNO MODEL 1932 1942 MARK 2 Ma rine Radar We are confident you will see why the FURUNO name has become synony mous with quality and reliability For over 50 years FURUNO Electric Com pany has enjoyed an enviable reputation for innovative and dependable marine electron ics equipment This dedication to excellence is furthered by our extensive global network of agents and dealers Your radar is designed and constructed to meet the rigorous demands of the marine en vironment However no machine can per form its intended function unless properly installed and maintained Please carefully read and follow the recommended proce dures for operation and maintenance We would appreciate hearing from you the end user about wheth
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