User manual FURUNO CH-270 OPERATORS MANUAL

[. . . ] Back COLOR LCD SEARCHLIGHT SONAR CH-270 Your Local Agent/Dealer 9-52 Ashihara-cho, Nishinomiya 662-8580, JAPAN Telephone : Fax : 0798-65-2111 0798-65-4200 All rights reserved. Printed in Japan FIRST EDITION : JUN. OME-13220 ( YOSH ) CH-270 *00014699501* *00014699501* *00014699501* *OME13220B20* *OME13220B20* *OME13220B20* SAFETY INSTRUCTIONS WARNING ELECTRICAL SHOCK HAZARD Do not open the equipment. Only qualified personnel should work inside the equipment. Immediately turn off the power at the switchboard if water leaks into the equipment or something is dropped in the equipment. [. . . ] 25 and 13 steps are available, respectively. Use the [SECTOR] control to adjust width of each color. Weakest color Use the [RANGE] control to move the location of the weakest echo color. Note: TILT, TRAIN, FULL/HALF, FAST SCAN, R/B, EVENT, TARGET, CUSTOM MODE controls may only be operated from the main window. When you attempt to operate them from the sub window the message "SELECT MAIN WINDOW. " appears for about four seconds. Flat bottom and strata display Each layer on the strata display is equal to one train on the horizontal display. -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. Flat bottom and strata display 2-33 2. HORIZONTAL MODE 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" Projection in fore direction and strata display Depth gradually becoming shallower in fore direction and strata display Color "c" -90° PORT Color "b" STBD +90° Color "a" Color "b" Color "d" Color "a" Color "a" Color "c" Depth gradually becoming shallower in fore direction and strata display Depth gradually becoming deeper in fore direction and strata display a -90° Color "b" Color "d" bc d cb Color "a" +90° Color "a" Color "c" Depth gradually becoming deeper in fore direction and strata display 2-34 3. VERTICAL SCAN MODE 3. 1 Operational Overview 6. Set scanning sector. The figure below shows the typical vertical scan mode operating sequence. 8. Adjust gain. XDR GAIN SECTOR TRAIN RANGE TILT MAIN POWER FULL HALF FAST SCAN BRILL TARGET MENU SUB R/B EVENT DISPLAY MODE CUSTOM MODE 2. Select appropriate vertical scan mode. 10. Measure range and bearing to target with cursor. 7(b). Adjust screen brilliance. Control unit 3-1 3. VERTICAL SCAN MODE 3. 2 3. 2. 1 Displaying Vertical Scan Mode Display Typical vertical scan mode display key to show the vertical scan mode display. Press the Bearing indicator (Shows training direction. ) FORE Own ship PORT Bow STARBOARD AFT Training indicator (Trained at 190°) Vertical range Horizontal range Transducer status indicator Filled arrow: Respective action completed Blinking arrow: Action in progress Heading* Cursor position data Horizontal range scale +6 145 60 Fish echo Cursor Horizontal range Bottom echo Depth 24 FORE 340° AFT R 60 m 100 m 60 34° 12. 213' W CSE SPD DEP TMP CUR 357° 9. 9 kt Position in latitude and longitude* Course*, speed* Interference rejector ON 35 m 12. 3°C 11. 0° 2. 0 kt Depth Water temperature* Tide direction*, tide speed* Gain setting TVG level, distance settings Color bar 63 Range marker 100 GAIN 5. 3 TVG LEVEL 4. 0 DISTANCE 200 m COLOR Sector center indicator Event marker Sweep indicator (Shows tilt angle in vertical scan mode. ) Vertical range scale Horizontal range marker * Requires appropriate sensor. Typical vertical scan mode display 3-2 3. VERTICAL SCAN MODE 3. 2. 2 How the vertical scan picture is painted The sounding beam is emitted and the information (target echoes) obtained by the reflected echo appears in the corresponding sector as it appears on the horizontal mode. The difference is that the training is performed only in vertical direction. It forms a sounding area of a half-circle (like a slice of watermelon) to observe a vertical section of underwater conditions. Note: The tilt mechanism has a 90° range of movement. To paint the full 180° area, therefore, the transducer is first trained through the left half (90-180°) of the area followed by the right half (0-90°). Approximately two seconds are required to rotate the transducer in the opposite direction before it begins training through the right or left half. Sounding Beam (1) Bearing of the sounding beam 0° BOW 180° 180° 0° Sector center 90°. Display range 24°. Screen Display (1) Bearing of the sounding beam Tilting direction (2) Sector center (3) Display area (2) Sector center, (3) Display area Select the bearing of the sounding beam (1) by [TRAIN] control, the sounding sector center (2) by the [TILT] control and the display area (3) by the [SECTOR] control. How the vertical scan mode picture is painted 3-3 3. [. . . ] 2-6 vertical scan mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-8 Track deleting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2 on/off . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-9 range preset. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ]