Furunoメーカー1761 MARK-3の使用説明書/サービス説明書
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C 9- 52, Ashi har a- cho, N i shi nom i y a, Japan T el ephone: 0798- 65-21 1 1 T el ef ax: 0798-65- 4200 Y our Local Agent / D eal er A ll r i g ht s reser ved. PU B . N o. O M E-34810 M O D E L 1761 M AR K - 3 ( YO S H ) FI R S T E D I T I O N : A U G .
i SAFETY INSTRUCTIONS DANGER Radio Frequency Radiation Hazard The radar antenna emits electromagnetic radio frequency (RF) energy which can be harmful, particularly to your eyes. Never look directly into the antenna aperture from a close distance while the radar is in operation or expose yourself to the transmitting antenna at a close distance.
ii DANGER Before turning on the radar make sure no one is near the scanner unit. Prevent the potential risk of someone begin struck by the rotating antenna and exposure to RF radiation hazard. WARNING Do not open the equipment. Improper handling can result in electrical shock.
iii Congratulations on your choice of the FURUNO MODEL 1761 MARK-3 Marine Ra- dar . We are confident you will see why the FURUNO name has become synonymous 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.
iv T ABLE OF CONTENTS FOREWORD .............................. iii MENU TREE ............................... v T ABLE OF CONTENTS BY INDICA TION, MARKER ............. vi SYSTEM CONFIGURA TION ..... vii 1. PRINCIPLE OF OPERA TION 1.1 What is Radar? ....
v MENU TREE 1. ECHO STRETCH (ON, OFF) 2. I. REJECT (OFF, ON) 3. PANEL DIMMER (0, 1, 2, 3, 4) 4. PLOT INTVL (CONT, 30S, 1M, 3M, 6M) 5. PLOT BRILL (LOW, @ HIGH) 6. RANGE (NM) set with (RING) (1/4, 1/2, 3/4, 1, 1.5, 2, 3, 4, 6, 8, 12, 16, 24, 48) 7. WATCHMAN (OFF, 5M, 10M, 20M) 8.
vi T ABLE OF CONTENTS BY INDICA TION, MARKER MAG 115.0 ¡ SHIFT 12 NM 3.0 NM PLOT 3M FTC IR GUARD VRM 2.62 NM 315.1 R ¡ 9.05 NM EBL 45.6 R ¡ 18:25 ES * WATCHMAN Tuning indicator (P.2-11) Echo stretch (P.2-8) Guard alarm (P.3-4) FTC (P.2-4) EBL (P.2-6) Range ring (P.
vii SYSTEM CONFIGURA TION *Equivalent to NMEA 0183 Option RDP-099 Navigation device IEC 61162* (In/Out) Gyro- compass Gyro Converter AD-100 12/24/32 VDC Rectifier RU-3423 115/230 VAC External Alarm Bu.
1-1 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 W ar II, echoes as an aid to naviga- tion is not a new development.
1-2 A B C D Own ship (radar) D A B C Heading marker Targets Own ship in center (A) Bird's eye view of situation (B) Radar picture of (A) Range and bearing of a target, relative to own ship, are readable on the PPI.
2-1 2. OPERA TION 2.1 Control Description POWER BRILL SHIFT ZOOM RING EBL VRM MENU RANGE OFF ECONOMY STBY T X GAIN PUSH/HM OFF A/C SEA A/C RAIN T urns power on. Press together with [STBY/TX] key to turn power off. Alternates between stand-by and transmit.
2-2 2.2 T urning the Radar On/Off After confirming there are no crew near the scanner unit, press the [POWER] key to turn on the power . The front panel will light up. The magnetron takes about two minutes and thirty seconds to warm up before the radar can be oper- ated.
2-3 echoes and the background noise on the dis- play . T o adjust receiver sensitivity , transmit on long range, and adjust the [GAIN] control so back- ground noise is just visible on the screen.
2-4 2.9 Adjusting the A/C RAIN Control (reducing rain clutter) The vertical beamwidth of the antenna is de- signed to see surface targets even when the ship is rolling. However , by this design the unit will also detect rain clutter (rain, snow , hail, etc.
2-5 2.13 Select the Cursor Data Display When connecting with NA V (IEC61 162 for- mat) and gyro converter (IEC61 162 or AD- 10 format), this radar can show the cursor position by Latitude/longitude at bottom of screen. Each time pressing [HM OFF] key , the data will change from Range/Bearing to Latitude/ longitude and vice versa.
2-6 2. Position the EBL so it bisects the target by operating the trackball. 3. Press the [EBL] key again to fix the EBL to the position. 4. Check the bearing readout to find the bearing of the target. T o erase the EBL, press and hold down the [EBL] key for about three seconds.
2-7 2. Press the [SHIFT/ZOOM] key . The indi- cation “ZOOM” appears and brinks. 3. T o turn of f the zoom, press the [SHIFT/ ZOOM] key again, or change the range. Cursor Place cursor where desired. Display magnifies. Press the [SHIFT/ZOOM] key. Display shifts.
2-8 2.19 Echo Stretch Normally , the reflected echoes from long dis- tance targets appear on the screen as weaker and smaller blips even through they are com- pensated by the radar ’s internal circuitry . The Echo Stretch function magnifies these small blips.
2-9 2.22 Selecting Ranges This radar has 14 ranges, some which you may not require. Y ou can select or deselect ranges as follows. 1. Press the [MENU] key to open the menu. 2 . Operate the trackball to select “6. RANGE”. 3. Press the [RANGE] key to place the un- derline under the range you want to se- lect or deselect.
2-10 Note 2: A target echo does not always mean a landmass, reef, ships or surface objects but can imply returns from sea surface or pre- cipitation. As the level of these returns varies with environm.
2-11 1. Determine the guard zone (usually 360 degrees) with the guard alarm function. 2. Press the [MENU] key to open the menu. 3 . Operate the trackball to select “7. W A TCHMAN” . 4. Press the [RANGE] key to select a trans- mission interval. 5 .
2-12 If the output format is FURUNO CIF a jumper wire must be connected to “JUP1” on the SPU Board in the display unit. Note that for CIF format the bearing measurement method (Magnetic or T rue) does not appear for bear- ing to waypoint data. Figure 2-15 Navigation Data on the Screen MAG 115.
3-1 3. F ALSE ECHOES 3.2 Side-lobe Echoes 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 t.
3-2 3.3 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.
3-3 3.5 SART (Search and Rescue T ransponder) A Search and Rescue T ransponder (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.
4-1 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. Turn off the power before performing any maintenance or troubleshooting procedure. DANGER Hazardous voltages can shock, burn or cause death.
4-2 4.3 T roubleshooting T able 4-2 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.
4-3 4.4 Life Expectancy of Magnetron The following table shows the life expectancy of the magnetrons. T able 4-3 Life expectancy of magnetrons e p y T n o r t e n g a M.
SP - 1 E3481S01B SPECIFI CA T I ONS OF MA RINE RADA R MO DEL 1761 M ARK-3 1. GENERAL 1.1. I ndication Sy stem PPI Dayli ght displ ay, raster scan, 8 tones i n monochr ome 1.2. Range, Pul selength ( PL) & Pulse R epetiti on Rate (PR R) Range (naut i cal m i l es) PL PRR 0.
SP - 2 E3481S01B 4. DI SPL AY UNIT 4.1. I ndication Sy stem PPI Dayli ght displ ay, raster scan, 8 tones i n monochr ome 4.2. Pict ure Tube 7 inch r ectangular monochr ome C RT Eff ecti ve displ ay area m ore than 100 m m 4.3. Range, R ange Inter val, Num ber of Rings Range (N M ) 0.
SP - 3 E3481S01B 7. COATING COL O R 7.1. Di splay U nit Panel: N 3.0, Chassis : 2.5GY5/1.5 7.2. Antenna Unit N9.5 8. CO MPASS SAFE DIST ANCE 8.1. Di splay Uni t Standard: 0.
IN-1 Index A A/C RAIN control .................................... 2-4 A/C SEA control .................................... 2-3 B Bearing measurement ............................. 2-5 Blind sectors ............................................ 3-2 Brilliance .
デバイスFuruno 1761 MARK-3の購入後に（又は購入する前であっても）重要なポイントは、説明書をよく読むことです。その単純な理由はいくつかあります：
Furuno 1761 MARK-3をまだ購入していないなら、この製品の基本情報を理解する良い機会です。まずは上にある説明書の最初のページをご覧ください。そこにはFuruno 1761 MARK-3の技術情報の概要が記載されているはずです。デバイスがあなたのニーズを満たすかどうかは、ここで確認しましょう。Furuno 1761 MARK-3の取扱説明書の次のページをよく読むことにより、製品の全機能やその取り扱いに関する情報を知ることができます。Furuno 1761 MARK-3で得られた情報は、きっとあなたの購入の決断を手助けしてくれることでしょう。
Furuno 1761 MARK-3を既にお持ちだが、まだ読んでいない場合は、上記の理由によりそれを行うべきです。そうすることにより機能を適切に使用しているか、又はFuruno 1761 MARK-3の不適切な取り扱いによりその寿命を短くする危険を犯していないかどうかを知ることができます。
ですが、ユーザガイドが果たす重要な役割の一つは、Furuno 1761 MARK-3に関する問題の解決を支援することです。そこにはほとんどの場合、トラブルシューティング、すなわちFuruno 1761 MARK-3デバイスで最もよく起こりうる故障・不良とそれらの対処法についてのアドバイスを見つけることができるはずです。たとえ問題を解決できなかった場合でも、説明書にはカスタマー・サービスセンター又は最寄りのサービスセンターへの問い合わせ先等、次の対処法についての指示があるはずです。
