User manual FURUNO DC-2000 OPERATORS MANUAL

[. . . ] A heater can melt the equipment's power cord, which can cause fire or electrical shock. The fuse in the hull and transceiver units protect them from overvoltage, equipment fault and reverse polarity of the ship's mains. Wait until the transducer switch [] lights steadily and then turn off the power. WARNING Keep heater away from equipment. i CAUTION Do not exceed 20 knots when operating the equipment and do not exceed 15 knots when lowering or raising the transducer. Use of the equipment as a stepping stool, for example, may result in personal injury or equipment damage. [. . . ] As the wake appears as a thick continuous line, it can be easily distinguished from a fish school. A wake contains many air bubbles which attenuate ultrasonic energy, making it difficult to sound beyond the wake. Other ship Own ship Own ship's screw noise Wake produced by other ship Own ship's screw noise Own ship's wake (produced when own ship turned) Figure 2-24 Wake 2-26 Sidelobe echo (false echo) An ultrasonic wave is emitted only in the direction set by the [TILT] control, however there are some emissions outside the main beam. The energy of the sidelobe is fairly weak but when the water is comparatively shallow and the bottom is rocky and hard, strong signals are detected by the sidelobe. These are represented on the display as a false echo as shown below. Mainlobe echo Sidelobe Sidelobe echo Mainlobe The bottom echo detected by sidelobe appears at a certain tilt angle when the sidelobe points vertically. Also, poor soundome projection may result in a similar false echo. Figure 2-25 Sidelobe echoes Noise and interference When the fishing ground is crowded with many fishing boats, the sonar is subject to interference from ultrasonic equipment (echo sounder or sonar) on other boats as well as those on own ship. For instance, interference from the sonar operated on other boats will show itself on the display as in (A) in the figure below. This interference can be suppressed by changing the Tx rate on the COMN menu. Noise from marine life shows itself on the displays as in (B) in the figure below. This type of noise can be suppressed with the interference rejector on the COMN menu. (A) Inteference from other sonars (yours or other's) (B) Interference from marine life Figure 2-26 Noise and interference 2-27 2. 14. 3 Combination display examples Horizontal/history display Press the key to display the horizontal/history display. Tilt angle Cursor position data 17 14 B148° + Own ship marker Range Tilt angle indicator R 40 m T 40° 25 30 Interference rej. ON Target lock indicator Transducer status indicator Position in latitude*, longitude* Course*, speed* 34° 12. 213' W CSE 357° SPD 9. 9 kt Fish echo Bottom echo Cursor * Requires appropriate sensor input. Horizontal Display HIstory Display Figure 2-27 Horizontal/history display The horizontal display appears in the main window; the history display in the sub window. -90° PORT STBD +90° Color "a" on the color bar Color "a" When the bottom is flat the horizontal display inscribes the bottom as a true circle, and the strata display inscribes the color of point "a". The color of this position on the color bar is the color of point "a" on the strata display. Figure 2-30 Flat bottom and strata display 2-31 Projection in fore direction and strata display Color "b" on the color bar is displayed here. -90° PORT STBD +90° Color "a" on the color bar Color "b" Color "a" Figure 2-31 Projection in fore direction and strata display Depth becoming shallower gradually in fore direction and strata display Color "c" -90° PORT Color "b" STBD +90° Color "a" Color "a" Color "c" Color "b" Figure 2-32 Depth becoming shallower gradually in fore direction and strata display Depth becoming deeper gradually in fore direction and strata display a -90° bc d cb Color "a" +90° bd ac Figure 2-33 Depth becoming deeper gradually in fore direction and strata display 2-32 3. Set scanning sector. The figure below shows the typical vertical fan mode operating sequence. 8. Adjust gain. XDR GAIN SECTOR TRAIN RANGE TILT MAIN POWER SUB FULL HALF FAST SCAN BRILL TARGET MENU R/B EVENT DISPLAY MODE CUSTOM MODE 2. Adjust screen brilliance. Figure 3-1 Control panel 3-1 3. 2 Typical Vertical Fan Mode Display Bearing indicator (Shows training direction. ) FORE Own ship PORT STARBOARD Training indicator Vertical range Horizontal range Transducer status indicator Filled arrow: Respective action completed Blinking arrow: Action in progress Heading* Horizontal range scale AFT Interference rejector ON Cursor position data +6 145 60 Fish echo Cursor Horizontal range Bottom echo Depth FORE 340° AFT R 60 m 100 m 60 34° 12. 213' W CSE SPD DEP 357° 9. 9 kt Position in latitude*, longitude* Course*, speed* 35 m 12. 3°C 11. 0° 2. 0 kt Depth 20 TMP CUR Water temperature* Tide direction*, tide speed* Gain setting TVG level, distance settings Color bar 56 Horizontal marker 100 GAIN 5. 3 TVG LEVEL 4. 0 DISTANCE 200 m COLOR Sector center indicator Event marker Vertical range scale Horizontal range marker * Requires appropriate sensor. Figure 3-2 Typical vertical fan mode display 3-2 3. 3 Selecting the Range The [RANGE] control selects the detection (display) range, in 15 settings. Select the range according to either the fish species being searched or the depth desired. Each time the control is operated the newly selected range briefly appears in large characters at the screen top. Range is permanently displayed at the top right-hand corner of the screen. Normally the range is set so that the bottom is traced at the lower part of the screen (like an echo sounder). Surface RANGE m Bottom Figure 3-3 Range concept Default vertical fan mode range settings Unit Meters Feet 1 10 30 2 20 60 3 30 90 4 40 120 5 60 150 6 80 200 7 100 250 8 120 300 9 160 400 10 200 500 11 250 600 12 300 800 13 400 1000 14 500 1500 15 600 2000 Note 1: Unit of range measurement may be selected for meters, feet, fathoms, passi/braza or Hiro (Japanese) with UNIT on the SYSTEM SETTING 1 menu. For details see page 5-14. 3-3 3. 4 Selecting Train Center The [TRAIN] control determines the bearing of the vertical fan beam, from 0° to 180°. [. . . ] COLOR, TRACK) PRESET menu (Default setting) CUSTOM1 (MODE: HORIZONTAL EXPANSION, SECTOR: 240°, TRAIN: 0°, RANGE (m): 250*, TILT: 30° SPEED: FAST ) CUSTOM2 (MODE: HORIZONTAL , SECTOR: 360°, TRAIN: 0°, RANGE (m): 250*, TILT: 30° SPEED: FAST ) CUSTOM3 (MODE: VERTICAL, SECTOR: 180°, TRAIN: 90°, RANGE (m): 120*, TILT: 90° SPEED: FAST ) (CONTINUED ON NEXT PAGE) * - For 60 kHz transducer. Default range depends on transducer. M-1 [MENU] key SYSTEM menu SYSTEM SETTING (See next page. ) RANGE-SONAR MODE (all default ranges) 60 kHz (min. range: m, 600; ft, 2000; fa, p/b, hiro, 400) RANGE-VER MODE (all default ranges) m: 10, 20, 30, 40, 60, 80, 100, 120, 160, 200, 250, 300, 400, 500, 600 ft: 30, 60, 90, 120, 150, 200, 250, 300, 400, 500, 600, 800, 1000, 1500, 2000 fa, P/B: 10, 20, 30, 40, 50, 60, 80, 100, 120, 140, 160, 200, 250, 300, 400 Hiro: 10, 20, 30, 40, 50, 60, 80, 100, 120, 140, 160, 200, 250, 300, 400 RANGE-E/S MODE (all default ranges) m: 10, 20, 30, 40, 60, 80, 100, 120, 160, 200, 250, 300, 400, 500, 600 ft: 30, 60, 90, 120, 150, 200, 250, 300, 400, 500, 600, 800, 1000, 1500, 2000 fa, P/B: 10, 20, 30, 40, 50, 60, 80, 100, 120, 140, 160, 200, 250, 300, 400 Hiro: 10, 20, 30, 40, 50, 60, 80, 100, 120, 140, 160, 200, 250, 300, 400 COLOR PALETTE (Adjusts color of echoes, text and background. ) LANGUAGE (ENGLISH, JAPANESE) SYSTEM BACKUP (NO, YES) LOAD BACKUP DATA (NO, YES) HEADING OFFSET (-30° - +30°, 0) ADJ MOTION SENSOR (ROLL ANGLE: -10° - +10°, 0; PITCH ANGLE: -10° - +10°, 0) TX FREQ ADJUST (60 kHz: 57 - 63 kHz, 60 kHz; 88 kHz: 83 - 93 kHz, 88 kHz; 150 kHz:142 - 158 kHz; 150 kHz; 180 kHz: 171 - 189 kHz, 180 kHz; 240 kHz: 228 - 252 kHz, 252 kHz) TEST (Checks equipment for proper operation. ) TEST PATTERN (Displays series of test patterns. ) DEMO MODE (OFF, ON) DEFAULT (NO, YES) (CONTINUED ON NEXT PAGE) M-2 SYSTEM SETTING 1 SHIP'S POSITION (L/L, LOP) CURRENT DATA (OFF, FLOW FROM, FLOW TO) HEADING INDICATION (TRUE, AZ) NORTH MARK (OFF, ON) CSE DATA (NAV, GYRO) NAV DATA (GPS, LoranC, LoranA, DR, DECCA, OTHERS) TVG CORRECTION (OFF, 1/2, 1/1) UNIT (m, ft, fa, HIRO, P/B) TEMP (°C, °F) EVENT MARK INFO (OFF, ON) CUSTOM KEY (PRESET KEY, SHORT-CUT KEY) STABILIZER (OFF, ON) RED STRESS FUNC (OFF, ON) ETA MARK (OFF, 10sec, 30sec, 1min, 3min, 6min) SYSTEM SETTING 2 AUTO RETRACTION (OFF, ON(5-15 kts)) SPEED ALARM/MESSAGE (OFF, ON) SOUNDOME SER. NO. (~999, 1000~) DEFAULT SETTING (NO, YES) M-3 SPECIFICATIONS OF 10. 4 INCH COLOR SEARCHLIGHT SONAR DC-2000 1 1. 1 1. 2 1. 3 1. 4 GENERAL Display System Transmit Frequency Output Power Range (factory setting) Range Detection Range (m) [H: horizontal mode, V: vertical fan mode] 10. 4 inch Color LCD 60, 88 or 150 kHz selected 0. 8 kW (60 kHz) to 1. 2 kW (150 kHz) 60 kHz H 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 10 20 40 80 120 160 200 250 300 400 500 600 800 1200 1600 V 10 20 30 40 60 80 100 120 160 200 250 300 400 500 600 88 kHz H 10 20 40 80 120 160 200 250 300 400 500 600 800 1000 1200 V 10 20 30 40 60 80 100 120 160 200 250 300 400 500 600 150 kHz H 10 20 40 60 80 120 160 200 250 300 400 500 600 800 1000 V 10 20 30 40 60 80 100 120 160 200 250 300 400 500 600 2 2. 1 2. 2 DISPLAY/ CONTROL UNIT Display Picture Color 10. 4 inch color LCD, 640 x 480 dots Echo: 16 or 8 colors Back-ground: 3 colors selected (user setting available) 2. 3 2. 4 2. 5 2. 6 Display Mode Combination Display Horizontal (Normal/Expanded), Vertical fan, Echo sounder Plotter, Vertical fan, Strata, History Alphanumerical Indication Range, Sensitivity, TVG, Tilt angle, Interference rejection External Data Indication L/L, Depth, Bearing, Ship's speed/Water current vector, Track, Water temperature (External IEC-61162 data required) 2. 7 2. 8 Marker Indication Unit Bearing/Distance to Waypoint Meter, feet, fathom, P/B SP - 1 E1316S01G 2. 9 Audio Monitor 2 W output (4 ohms), Freq. 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