Furuno CSH-7 Radar Detector User Manual
Contents
1. Bearing and Range Markers Bearing marker 2 Range marker Range and Bearing Marker Data ROLL BOOOL The bearing marker bisects the trackball marker location when the R B key is pressed to monitor fish echoes with audible sound Furthermore the radius of the range marker is at the trackball marker location These markers may be erased by placing the trackball marker near the own ship marker and pressing the R B key The slant range to the range marker and the bearing of the bearing marker are displayed Range Rings The range rings are inscribed at intervals of 1 4 of the range in use Range ring data is also provided every two range rings The range ring interval can be changed from 1 4 to 1 2 through the menu Range Data Shows the range scale set with the RANGE control ROOOL Tilt Data The tilt angle set with the TILT lever is displayed in 1 steps between T Qj and 55j Gain Gain setting is displayed in increments of 0 5 between 0 and 10 Setting Change When the controls in the table below are changed new setting appears Data in large characters at the top of the screen for five seconds Control Display RANGE R TILT T P GAIN GL 2 2 Optional Markers and Data Various markers and data are available with connection of the INTERFACE Board and appropriate external equipment Optional markers and dat2. Range and bearing data of the intersection of the two markers are dislayed at the bottom of the screen To turn off the range and bearing markers move the trackball mark near the own ship position and press the R B key sa ae R Shifts screen center to cursor location Figure 1 2 Control panel description Turning the Power On Off Power on Press the power switch at the lower left corner of the display unit to turn the power on off When the display unit is turned on it checks itself for proper operation This test is described in Chapter 8 Power off Press the switch to retract the transducer Wait until the lamp above the switch lights and then press the power switch to turn off the system Note The transducer is automatically retracted into the tank even if the power switch is pressed before retracting the transducer However make it a habit to retract the transducer before turning off the power 1 2 Adjusting Screen Brilliance Control Panel Backlighting The BRILL control adjusts screen brilliance and the DIMMER control adjusts control panel backlighting Lowering the Transducer Press the switch The lamp above the switch blinks and lights when the transducer is fully lowered A CAUTION Do not exceed speed noted in the speci fications when operating the equipment or lowering or raising the transducer The transducer may become damaged Do not press the switch during
3. AGC works only on seabed reflections Do not set it too high weak echoes may be missed Pulselength The pulselength control determines the length of the transmis sion pulse emitted into the water While a longer pulse is advan tageous for long range sounding it has the disadvantage of being poor in discrimination of targets that is ability to separate sev eral closely located targets When searching bottom fish there fore it is useful to shorten the pulselength in order to separate fish echoes from seabed reflections Decrease the PULSELENGTH setting on the Scan menu to shorten the pulselength For search of surface and midwater fish in which seabed reflections are not so strong use the longest pulselength 10 Suppressing Seabed and Sea Surface Reflections in Shallow Waters In shallow fishing grounds with hard or rocky bottom seabed reflections often interfere with wanted fish echoes and they can not be eliminated sufficiently with the aforementioned TVG and AGC especially when the TILT is set to a larger angle in order to track fish schools approaching within 400 m In such cases try to reduce the output power with OUTPUT in the Scan menu without turning down the GAIN The picture becomes clearer when output power is reduced rather than when the GAIN is decreased as illustrated below WRONG i E Fish echo Fish echo TVG and AGC weakened adjusted with OUTPUT kept high CORRECT METHOD Fish
4. Bearing marker Range marker Range rings Course line marker North marker Tidal current marker Electronic bearing scale Scan data range tilt angle gain Trackball marker data slant range horizontal range depth bearing Event marker data horizontal range and depth and bearing at time of entry Bearing and range marker data bearing range Setting data New gain range or tilt setting appears in larger characters for five seconds Nav data speed course depth water tempera ture Own ship data position in L L or TDs Tidal current data speed direction and set depth for three layers Meters feet fathoms passi braza Interference rejector video processing noise limiter digital data markers course line with erasure unretracted transducer alarm Requires Interface Module CSH 7050 option and appro priate sensor 9 1 Range TX cycle pulselength Range range display Pulselength TX cycle Audio Search Searching method Audio output Audio frequency Transmitter Unit Transmitter section Receiver section Tx frequency 9 2 Maximum display range m Bange m Off center OFF Off center ON 85 110 135 100 130 160 150 195 240 200 260 320 250 325 400 300 390 480 350 455 560 400 520 640 450 585 720 500 650 800 600 780 960 800 1040 1280 1 Ranges shown for off center on are maximum 2 Fish school may not be detected depending on its nat
5. KP synchronization on off RANGE MARKER Selects range marker length from 1 4 of range or 1 2 of range BEARING SCALE Turns electronic bearing scale on off CURRENT MARK Turns the current tide mark on off COURSE MARK Selects length of the course line plot from 10 times or 5 times the range in use HEADING INDI Selects heading indication 32 azimuth or true bearing CURRENT INDI Selects current tide indication 32 azimuth true bearing 180 or 360 EVENT INDI Selects event indication 32 azimuth or true bearing 180 or 360 MARK INDI Selects mark indication 180 or 360 POSITION DATA Displays position in latitude and longitude or LOP Line Of Position Figure 3 3 Menu 2 description 3 5 System menu description SYSTEM MENU RANGE SW U D GAIN SW L R HEADING ADJ 0 UNIT METERS FEET FATHOMS PA BRA SHIP S SPD BR Weer cl NAV LOG PULSE 200 400 CI BAUD RATE E 2400 1200 NAV FORMAT CA Eass NE NAVBAUDRATE 2400 1200 NAV DATA U sc DEC DR gt LA ALL MENU SELECT een UNLOCK SUB TEXT INDI U oon LANGUAGE E e ESPANOL DANSK SELF TEST SINGLE PANEL COLOR GRAY CONTI SIO ECHO 1 ECHO 2 DEFAULTS EXECUTE Requires INTERFACE Board Locked setting Item Description HEADING ADJ Compensates for flange in hull unit alignment error The picture rotates with RANGE switch operation Res
6. gyrocompass connection It rotates with own ship s movement Course Line Marker Ro With gyrocompass or speed log connection own ship s course line is plotted by a solid line Course line length is selectable from 5 to 10 times the range in use Course line can be erased through the menu Tidal Current 5 Marker With current indicator connection the tidal current marker shows the speed and direction of three tide layers numbered 1 through 3 The tide speed is shown by vector length However no vectors develop if the tide speed is 0 1 knots or less Tidal current markers can be erased Tidal Current Data T Own Ship Data o In the normal mode plus text tide speed and direction for three tide layers appear in the text area The method for displaying current direction can be selected through the menu Own ship speed S Heading C Depth D and Water temp erature T can be displayed on the text area Requires appropriate sensors North Marker A The north marker is displayed with gyrocompass connection 2 5 MENU OVERVIEW The menu system consists of four menus Scan menu Menu 1 Menu 2 and System The Scan menu can be opened while trans mitting and contains items which the user will often change during the course of operation Menu 1 similar to
7. lowering of the transducer and do not press the switch during raising of the transducer The equipment may become damaged Selecting a Display Range Operate the RANGE control to select a display range The range selected appears at the top center of the screen Setting the Tilt Angle The tilt angle shows the direction to which the sound wave is emitted When the sound wave is emitted horizontally the tilt angle is said to be zero degrees and when emitted vertically 90 degrees To set a tilt angle operate the TILT lever Watch the tilt angle indication at the top right corner on the screen The tilt angle can be set in one degree steps from 0 to 55 degrees Finding a proper tilt angle is important when searching for fish Below are tips for selecting tilt angle 1 3 1 4 Seabed echo and tilt angle Case 1 Tilt angle 30 to 40 degrees This tilt angle will display the entire seabed since it is captured by the full width of the beam Case 2 Tilt angle 10 to 20 degrees This tilt angle will only display half the seabed since it is only captured by the lower half of the beam Case 3 Tilt angle 0 to 10 degrees This tilt angle may or may not capture the seabed since the re turning echo is weak How to discriminate fish echoes from the seabed The figure below illustrates how two fish schools a and D are displayed on the screen using three different tilt angles Case 1 Tilt angle 30 to 40 degrees F
8. standard setting NOISE LIM Rejects noise displayed over the entire screen in light blue or blue Position 3 is the usual setting VP Adjusts the after image of the echoes for proper period echoes are stretched in the radial direction Set to 0 when its function is not required Table 3 1 Scan menu description con t Item Description IR Rejects random noise and interference caused by other echo sounders or sonars MARK ERASE Erases all own ship markers or course line HOR BEAM ANGL Selects horizontal beam angle Select wide for general use narrrow for better bearing discrimination RES COLOR CURVE Sets the balance between weak and strong echoes LINEAR varies output proportionally with input actual echo strength Select a higher setting to better emphasize weak echoes weak echoes are displayed in stronger echo colors as the setting goes higher The standard setting is LINEAR COLOR EMPHASIS Sets the proportion of red in the color display the higher the setting the greater the proportion of echoes displayed in red FUNC1 PROG Selects program to use with the F1 key FUNC2 PROG Selects program to use with the F2 key USER PROG Enables programing of USER1 and USER2 programs Menu 1 Menu 2 System Menu Operation 3 3 Displaying menu 1 menu 2 system menu 1 Press the TX switch to blink the lamp transmitter off state above it if it is not already bli
9. the Scan menu Menu 2 and System menus can be opened with the trans mitter turned off Menu 2 and the System menus contain items which once set do not require frequent adjustment Scan Menu Operation Displaying the scan menu 1 Press the TX switch to light the lamp transmitter on state above it if it is not already lit 2 Press the MENU key The first five items of the Scan menu appear The figure below shows the entire menu SCAN MENU RANGE SW U D GAIN SW L R DEGAUSS EXECUTE AUTO DEGAUSS Oa TIMER DISPLAY MODE NORM TEXT TX OUTPUT 10 PULSELENGTH 10 TX CYCLE 10 TVG NEAR 10 TVG FAR 10 AGC 10 NOISE LIM 10 0 0 MARK ERASE COURSE SHIP HOR BEAM ANGL WIDE NARROW RESCOLCURVE LINEAR 1 3 COLOR EMPHASIS 1 LOW 2 4 HIGH FUNC1 PROG USERI SETUP1 SETUP2 SETUP3 FUNC2 PROG USER2 SETUP1 SETUP2 SETUP3 USER PROG USERI USER2 Requires INTERFACE Board Locked setting in red To change select item adjust GAIN control to display YES and press the TX key Selected item appears in green setting may now be changed Figure 3 1 Scan menu 3 Operate the RANGE control to scroll the menu and select item The selected item is highlighted in green and current setting in white 4 Operate the GAIN control to change setting 5 Press the MENU key to register selections and close the menu Note Gain or range cannot be changed while the Scan menu is displayed Scan men
10. the next page for instructions 8 1 Hand crank POSSIBILITY OF INJURY 1 If breaker hull unit trips do the following POWER ON OFF LED Green DOWN command LED Red k I Breaker 1 Turn off power swich on hull unit 2 Wait 60 sec after breaker has tripped 3 Press breaker 2 Turn off hull unit before using hand crank Cable gland O Breaker ON OFF state a Zan Breaker Bottom view bed OFF How to use the hand crank 1 Turn off the POWER switch on the hull unit 2 Remove gear cover 3 Attach hand crank to shaft gear or motor gear a When crank is attached to shaft gear b When crank is attached to motor gear Requires greater force but less turns Requires less force but more turns Motor gear Hand crank Tighten screws N Tighten screw Use screw from Use screw from cover Shaft gear cover Shaft moves 600 mm Shaft moves 600 mm per 120 turns of crank per 210 turns of crank Figure 8 1 How to use the hand crank Diagnostic Tests A CAUTION Raise the transducer before conducting the diagnostic tests In the diagnostic tests the MENU key raises the transducer Thus personal injury can result if the key is operated while someone is near the transducer This unit has eight diagnostic test which check it for proper op eration These tests are mainly for use by service technicians however the user may execute the
11. LFUIRWIINI OPERATOR S MANUAL COLOR SCANNING SONAR MODEL CSH 7 p FURUNO ELECTRIC CO LTD NISHINOMIYA JAPAN FURUNO ELECTRIC CO LTD 9 52 Ashihara cho Nishinomiya Japan 662 Telephone 0798 65 2111 Telefax 0798 65 4200 PUB No OME 13020 DAMI CSH 7 Your Local Agent Dealer FIRST EDITION MAY 1997 A SAFETY INSTRUCTIONS A WARNING Do not open the equipment Hazardous voltage which can cause electrical shock burn or serious injury exists inside the equipment Only qualified personnel should work inside the equipment Do not disassemble or modify the equipment Fire electrical shock or serious injury can result Turn off the power immediately if water leaks into the equipment or the equip ment is emitting smoke or fire Continued use of the equipment can cause fire or electrical shock Do not place liquid filled containers on the top of the equipment Fire or electrical shock can result if a liquid spills into the equipment Do not operate the equipment with wet hands Electrical shock can result Keep heater away from equipment Heat can alter equipment shape and melt the power cord which can cause fire or electrical shock A CAUTION Use the proper fuse Use of a wrong fuse can result in fire or permanent equipment damage Do not use the equipment for other than its intended purpose Personal injury can result if the equipment is used as a chai
12. NO oor scanne sonar CSH 7 OFF R mee CENTER ON CJ 1 OFF BRILL DIMMER AUDIO oS o ak BRILL control POWER switch DIMMER control AUDIO control Trackball Control panel Figure 1 1 Display unit Remote controller 1 1 Display Unit Control Panel Description Raises lowers the transducer respectively Lamp above a key blinks While the transducer is moving and lights when it stops Turns transmitter on off freezes the display The lamp above the switch lights when the transmitter is turned on and flickers when off Selects a picture display range Also functions to select items on menu screens Note that this control turns endlessly in both directions Adjusts receiver sensitivity Adjust for clear presentation of fish echoes Also functions to change settings on menu screens Tilts the sounding beam between 0 and 55 The current angle always appears on the screen Opens closes the menu Function keys execute assigned program when activated The lamp above a key lights when function is activated Inscribes deletes an event marker Draws straight line called bearing marker from own ship position toward the trackball marker and simultaneously draws a circle range marker with a radius being the distance between the own ship marker and trackball marker
13. Narrow tilt angle al Only half of i LA 9 vertical beam width captures the seabed B Flat seabed Tilt angle 20 or more Seabed is displayed narrower and in stronger colors when compared to A C Sloping seabed Tilt angle 20 or more Shallow bottom is displayed in a strong color and with a short tail Seabed Figure 6 1 Seabed echoes 6 1 Fish Schools A fish school appears as a mass of echoes on the screen The color of the mass shows the density of fish schools on the sonar beam To find distribution and center point of a fish school try several different tilt angles A Sea surface fish Tilt angle 5 to 10 Seabed echo not displayed because of narrow tilt angle Sea surface reflections are present Fish school Sea surface reflections B Midwater bottom fish Tilt angle 30 or more Fish echo which appears before seabed can be detected Seabed Fish school Large midwater fish school is present Tilt angle 0 to 20 Fish echo which appears together with or after seabed can be detected Fish school Seabed Figure 6 2 Fish schools Sea Surface Reflections Wake To reduce sea surface reflections set the tilt angle to 5 or higher so the upper edge of the sonar beam does not hit the sea surface or adjust TVG When a narrow tilt angle is used sea surface reflections cover a large area as illustrated below Sea surface Tilt angl
14. Normally set the control somewhere between positions 3 and 7 Gain low Gain proper Gain high Figure 1 6 Gain settings and resulting picture 1 7 MARKERS AND DATA Standard Markers and Data Heading data Requires INTERFACE Board and gyrocompass Trackball marker data a H Slant range ee 3 Range Horizontal range D D Tilt Depth J pee paenan SO Da True bearing en Ms i Gain Trackball T Z emer marker Bearing marker Heading marker Range marker Own ship TT Aa marker Range ring Bearing of bearing marker Unit of depth Range to measurement range marker Figure 2 1 Standard markers and data Table 2 1 Standard markers and data description Marker Data Description Own Ship Marker A Marks position on the screen Direction of arrow is heading Trackball The trackball marker selects location for markers and own ship s Marker position The trackball moves the marker over the entire screen Trackball Data Trackball data F S Slant range Horizontal range 4 J Depth B j B Bearing Bearing is shown in 360 or 180j indication system relative to ship s heading In the latter case B is indicated as follows B P on the port side B P on the starboard side
15. a SPECIFICATIONS FOREWORD A Word to CSH 7 Owners Congratulations on your choice of the FURUNO CSH 7 Color Scanning Sonar We are confident you will see why the FURUNO name has become synonymous with quality and reliability For over 40 years FURUNO Electric Company has enjoyed an enviable reputation for qual ity marine electronics equipment This dedication to excellence is furthered by our exten sive global network of agents and dealers This equipment is designed and constructed to meet the rigorous demands of the marine environment However no machine can perform its intended function unless operated and maintained properly Please carefully read and follow the recommended procedures for op eration and maintenance We would appreciate hearing from you the end user about whether we are achieving our purposes Thank you for considering and purchasing FURUNO equipment Features The FURUNO CSH 7 Color Scanning Sonar is a full circle multibeam electronic scanning sonar which detects and instantaneously displays fish schools and underwater conditions in 16 colors on a 10 non glare high resolution CRT screen Its ease of operation versatility and compact size make it the perfect match for any class of fishing vessel The main features of the CSH 7 are e Compact size permits installation on smaller fishing boats e Vivid 16 color display provides intuitive recognition of seabed and concentration distri bution and v
16. a in the normal mode Heading indication Trackball marker data Trackball marker Latest event marker Electronic bearing scale Past Tidal event current marker marker Course line Latest Own event ship marker event data marker Figure 2 2 Optional markers and data in the normal mode 2 3 Optional markers and data in the normal plus text mode Heading indication Latest event marker Past event marker Latest event marker data 0 0 34 13 02N 135 16 39E Position Nav NWW C1 1 1 315 data D 474 C2 06 2s Tidal current 17 0 C3 1 2 64 data Figure 2 3 Optional markers and data in the normal plus text mode 2 4 Latest Event Marker Data Table 2 2 Optional markers and data description Description The position data of the latest event marker that is horizontal range gt current depth 4 and bearing shows the latest event marker s original depth and remains unchanged regardless of ship s movement or tilt angle When the event marker is erased the above data disappears from the screen To erase an event maker place the trackball maker on the event marker and press the EVENT key Own Ship Event Marker You can plot ten own ship event markers on the course line This mar ker can be erased Electronic Bearing Scale Q The electronic bearing scale is available with
17. dually become bluish as the NOISE LIM setting is raised Usually setting 3 or 4 is suit able Rejecting interference with TX cycle When other sonars operate nearby at the same transmission in terval as that of own ship s sonar an interference ring caused by other sonars is displayed To erase the interference ring from the screen reduce the TX CYCLE setting on the Scan menu Interference TX CYCLE High TX CYCLE Lowered Figure 4 3 How TX cycle works Note When the sonar is used in a shallow water with the range set between 100 m and 200 m and the TX CYCLE at 10 sea bed reflections may appear on the screen Reduce the TX CYCLE setting to 7 or 8 to reject them Selecting horizontal beamwidth If you wish to have better bearing discrimination ability to dis tinguish two closely located targets at the same range and differ ent bearings for fish schools and also wish to examine the contour of seabed select HOR BEAM ANGL to NARROW on the Scan menu 4 5 ADVANCED OPERATION Measuring the Range and Bearing to a Target Operate the trackball to place the trackball marker 4 on the target you want to measure the range and bearing The range and bearing are displayed at the top left corner on the screen Trackball marker Slant range x t Horizontal range l Depth i B Bearing Figure 5 1 Location of range and bearing indications Note The bearing is shown in either 360 o
18. e indication Tx 16 Rx 19 Sea surface reflections Figure 6 3 Sea surface reflections A wake produced by own ship or another ship can be a strong reflecting object when a narrow tilt angle is used 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 Br PRN NO SOP Own ship Own ship s screw noise SS P Wake produced by other ship Own ship s wake Own ship s produced when screw noise own ship turned Figure 6 4 Wake appearance on the display 6 3 False Echo by Sidelobe Sidelobe An ultrasonic wave is emitted only in the direction set by the TILT lever however there are some emissions outside the main beam These are called sidelobes The ennergy 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 Sidelobe echo Sidelobe echo The seabed echo detected by sidelobe appears at a certain tilt angle when the sidelobe points vertically Figure 6 5 Sidelobe echoes Noise and Interference 6 4 Interference from a sonar on board another ship appears on the screen as shown in A below This interference can be suppressed by cha
19. e When more than ten of either marker is entered the el dest corresponding marker is erased to make room for the latest Note that this function requires a gyrocompass navigator for own ship event marker and the INTERFACE Board Entering an event marker own ship event marker 1 Place the trackball marker on the location desired for an event marker For own ship event marker place the trackball marker at own ship marker at screen center 2 Press the EVENT key The latest event marker appears at the cursor location and event marker data horizontal distance present depth depth when marker was plotted and bearing is displayed at the lower left side of the screen Horizontal range Present depth Depth when marker plotted Bearing Figure 5 4 Latest event marker data Erasing all own ship event markers All own ship event markers can be erased as follows 1 Press the MENU key to display the SCAN menu 2 Select MARK ERASE 3 select SHIP 4 Press the MENU key Erasing an event marker 1 Place the trackball marker on the event marker 2 Press the EVENT key 5 5 INTERPRETING THE DISPLAY Seabed Echoes When the tilt angle is widened the seabed echo illustrated be low will appear on the display When the tilt is narrowed the seabed trace becomes wider and weaker By observing the sea bed condition on the display the skipper can prevent net dam age A Flat seabed Tilt angle 10 to 15
20. e transducer face those from nearer targets are generally stronger when their reflecting properties are nearly equal The sonar operator will be quite inconvenienced if these echoes are directly displayed on the screen since he can not judge the actual size of the target from the size of echoes dis played on the screen To overcome this inconvenience the TVG function is incorporated It compensates for propagation loss of sound in water amplification of echoes on short range is sup pressed and gradually increased as range increases so that simi lar targets are displayed in the similar intensities irrespective of the ranges to them The CSH 7 has two TVG functions NEAR and FAR and they mainly compensate for propagation loss on short and long ranges respectively centered at the ranges shown below The higher the TVG setting the greater the amplification of echoes Figure 4 1 Principle of TVG The TVG is also used to suppress unwanted echoes and noise which appear in a certain range area on the screen such as sea surface reflections and cruising noise To set TVG properly do the following How to adjust TVG 1 Press the MENU key to display the Scan menu 2 Set both TVG NEAR and TVG FAR to 5 These are the standard settings and you can maintain them in most cases 3 When sea surface reflections or plankton displayed in weak colors disturb the picture decrease TVG NEAR by 1 or 2 to eliminate it 4 Locate a f
21. echo OUTPUT decreased with GAIN kept constant Figure 4 2 How to suppress seabed and sea surface reflections in shallow waters 4 3 Rejecting Sonar Interference and Noise 4 4 While observing the sonar picture you may encounter occasional or intermittent noise and interference These are mostly caused by on board electronic equipment engine or propeller noise or electrical noise from other sonars being operated nearby Identifying noise source To eliminate noise effectively you should first identify the noise source as follows 1 Turn off the TX switch and operate all on board equipment one by one while observing the picture 2 Run the boat at various speeds to check if the noise is speed dependent If neither of the above two steps has effect on the picture adjust the IR Interference Rejector and NOISE LIM Noise Limiter on the Scan menu as follows Rejecting noise with IR on the scan menu This control is similar to the interference rejector on echo sound ers and radars It is effective for rejecting random noise and sea surface reflections in rough sea conditions Set it so that noise is just eliminated Do not use an unnecessarily high setting since it may also reject small wanted echoes Rejecting noise with NOISE LIM on the scan menu Weak unwanted reflections colored light blue or green are dis played when water is contaminated or plankton layers exist or due to ship s noise These echoes gra
22. esults of continuous test SIO test This text checks transceiver unit input and output SIO TEST MAIN SIO1 OK I F SIO NAV NG lt _ For service technicians SIO CI NG special test connector required to check NG appears when no test connector is connected PRESS MENU 2 or 3 SECONDS TO STOP SELFCHECK Figure 8 7 Results of SIO test Echo 1 test This test checks the echo processing circuits in the display unit for proper operation DISPLAY ECHO TEST 240 R 400 T 10 wE s N wo D PRESS MENU 2 or 3 SECONDS TO STOP SELFCHECKI R29 B 358 Figure 8 8 Echo 1 test display Echo 2 test This test checks echo processing circuits in the display unit and transceiver unit TRX ECHO TEST PRESS MENU 2 or 3 SECONDS TO STOP SELFCHECK Figure 8 9 Echo 2 test display Note Appearance of above test pattern may vary slightly depending on the frequency or internal settings 8 7 SPECIFICATIONS Model Display Display Display color Display mode Display resolution Markers indications Data Units of measurement Standard features CSH 7 xx 55 55 kHz 70 70 kHz PPI display on 10 non glare high resolution CRT 16 colors according to echo strength Normal Normal plus text 512 x 384 dot Own ship marker Heading marker Trackball marker Own ship event marker Event marker Unretracted transducer indication
23. ight hitting a mirror at a narrow incident angle it propagates away and the sea surface reflections become negligible However if the sea is not calm enough they will become domi nant and interfere with observation of wanted echoes To mini mize these sea surface reflections and to search surface fish schools effectively the tilt angle is usually set between 5 and 6 degrees so the upper portion of the beam becomes almost paral lel with the sea surface When the sea is rough it is often set to a little larger angle Surface Tilt angle 0 Beam width Tx 16 Rx 19 Tilt angle 5 6 Beam width Tx 16 Rx 19 Figure 1 4 Tilt angle and sea surface reflections 1 5 Suitable tilt angle The figure below illustrates the relationship among tilt angle depth and detection range Refer to it to find out the suitable tilt angle for a given depth detection range Tilt angle and beam coverage lt 7 EE CRE 7 yyy EPR TA 80 160 d ee w ydaq Figure 1 5 Tilt angle and beam coverage 1 6 Adjusting the Gain The GAIN control adjusts receiver sensitivity gain Adjust it so fish echoes are clearly displayed with minimal noise on the screen Too high a setting not only displays excess noise and makes it difficult to discriminate wanted echoes but also causes seabed echoes to be painted in strong colors resulting in echoes being masked by seabed reflections
24. ion 1 Move the trackball marker to the position where the own ship mark is to be moved 2 Press the OFF CENTER key 3 To cancel the off center function and shift own ship marker back to the center of the screen press the OFF CENTER key again 5 2 Function Keys F1 F2 Function keys F1 and F2 work like the auto dialing feature on a telephone instantly calling out desired settings to perform spe cially assigned functions These keys provide optimum sonar settings for a specific purpose with a single key operation Each function key can be assigned a combination of particular sonar settings which will be most suited to a specific objective for example detection of a fish school Five programs are avail able two user programs User 1 2 and three task specific pro grams Setup 1 2 3 The default settings of these programs are shown in the table below Note that the Setup programs can not be changed Table 5 1 Default programs Program Setting Item Setup 3 User 1 2 gach seool Wreck eet LORE Tange TX OUTPUT 10 8 10 10 PULSELENGTH 2 8 2 10 TX CYCLE 10 10 10 10 TVG NEAR 3 5 3 3 TVG FAR 7 6 7 8 AGC 3 1 3 2 NOISE LIM 5 3 5 4 IR 1 2 1 1 VP 1 1 1 1 HOR BEAM ANGLE NARROW NARROW NARROW NARROW RES COLOR CURVE LINEAR 1 LINEAR 1 COL EMPHASIS 4 3 4 3 5 3 5 4 Programming user programs 1 6 7 Press the TX switch to blink the lamp ab
25. ish school is obscured by the seabed Case 2 Tilt angle 10 to 20 degrees Fish school is located above the seabed midwater Case 3 Tilt angle 0 to 10 degrees Fish school is located close to the seabed Seabed Fi school Figure 1 3 Fish echo and tilt angle Points to consider e Normally a vertically distributed fish school is a better sonar target than the seabed because it reflects the transmitted pulse back toward the transducer e Incase 3 both fish schools and 6 are presented Gener ally speaking however midwater fish schools tend to be larger than bottom fish schools and they are often displayed near the seabed on the display e It is difficult to detect bottom fish when they are not distrib uted vertically Tilt angle for surface fish Sound emitted from the sonar transducer forms a circle shaped beam with a width in the vertical directions vertical beam width of approximately 16 degrees for Tx and 19 degrees for Rx The tilt angle is indicated by the angle between the center line of the beam and the horizontal plane Then if the tilt angle is set to 0 degrees the center line is parallel with the sea surface and one half of the emitted sound goes upward toward the sea surface This causes one half of the emitted sound to be reflected toward the transducer and displayed on the screen as sea surface reflec tions When the sea is calm since the sound is reflected just like a l
26. ish school on a long range setting which is ap proaching own ship Adjust the tilt to keep the fish school in the center of the sonar beam namely fish school is displayed in strongest colors possible Confirm that the fish echo is displayed in the same color as it approaches If the color sud denly changes to weaker colors as the fish enters FAR and NEAR areas the TVG is improperly set Adjust the TVG If this again produces sea surface reflections and noise try to remove them with AGC and NOISE LIM on the Scan menu 5 Press the MENU key to close the menu Displaying Surface Fish Clearly When you are searching for surface fish with the tilt set to a narrow angle sea surface reflections may disturb or mask wanted fish echoes In this case in addition to the TVG adjustment de scribed earlier set the AGC between positions 0 and 3 on the Scan menu Suppressing Seabed Tail 4 2 As noted earlier fish schools echoes located near the seabed are sometimes difficult to detect because you have to discrimi nate them in the seabed reflections The AGC and PULSELENGTH in the Scan menu if used properly decrease the tail of seabed reflections making it easier to discriminate bottom fish AGC The AGC functions to automatically reduce the receiver gain only against strong echoes such as the seabed or a large fish school Since weak echoes remain unaffected a small fish school becomes easier to detect Adjust it so that the
27. m to identify possibly defec tive components Starting quitting diagnostic tests 1 Press the MENU key 2 Operate the GAIN control to select the System menu 3 Operate the RANGE control to select SELF TEST 4 Operate the GAIN control to select a test 5 Press the TX switch to start the test 6 To exit a test press the MENU key for several seconds Note After the SINGLE test is completed control is returned to the System menu Diagnostic tests description Single test This test checks the MAIN Board in the display unit and the transceiver unit for proper operation one time after which nor mal operation is restored After the test is completed the results of each device checked are indicated as OK or NG No Good to the right of the device checked SINGLE TEST Program no of display unit MAIN 105 0557 0 ROM OK appears and ROM RAM RAM OK m and password are checked PW OK TRX 105 0569 000 J pf Program no of transceiver OK unit and ROM and RAM are RAM SOR a checked VF 105 0267 Oxx ROM TOK e Last two digits change with program no ROM RAM check results are shown as OK or NG No Good Check results circum scribed with dashed lines appear when interface module is used Figure 8 2 Results of single test 8 3 Note When the transducer is fully lowered pressing the MENU key at the diagnostic test raises the transducer Panel test This test checks the c
28. nd Data nn nn da Aa ia a A aii 2 1 Optional Markers and Data ena ee anna ae aa an aa anna nanas aan aaaaaan 2 3 MENU OVERVIEW Scan Menu Operation gas ena AAA e A AAA AA NA 3 1 Menu 1 Menu 2 System Menu Operation ee ena ane anna n aaa naaa nanas aaaaan 3 4 FINE TUNING THE PICTURE Eliminating Unwanted Feeble ECHOES nn nn a AAA AAA AB A A A 4 1 Displaying Surface Fish Clearly mean nennen ane aan ane aan a ana nana aaaana 4 2 Suppressin sg Seabed Talk nn AAA a E A A A A 4 2 Suppressing Seabed and Sea Surface Reflections in Shallow Waters aa 4 3 Rejecting Sonar Interference and Noise s s5scisscecsccaswcenscacscazucscsdardcansnoitarstanicenicignierscasncacetaanies 4 4 ADVANCED OPERATION Measuring the Range and Bearing to a Target rmai 5 1 Detecting Fish Schools Aurally nn Sana an KAA ana ERR 5 1 Relocating Fish School for Easy Observation wp aiwencsinimasinitonunventiiennnisinbsteameaaunctienwiin 5 2 Function Keys FT P2 Se Anna nana nan A a a Aan dann 5 3 Event Markers Own Ship Event Markers ane aa anna aaaaaan 5 5 INTERPRETING THE DISPLAY False Echo by Sidelobe Noise and Interference ea MAINTENANCE Display Unit Maintenance Hull Unit Maintenance aa TROUBLESHOOTING When the Transducer Cannot be Retracted Diagnostic Tests aa
29. nging the TX CYCLE setting in the Scan menu Interfer ence from electrical equipment on board own ship appears as shown in B below Noise from marine life appears on the dis play as shown in C Electrical interference and marine life noise can be suppressed with IR on the Scan menu la a N ba ks J A Interference from B Electrical C Marine life noise other sonar interference Figure 6 6 Noise and interference MAINTENANCE A WARNING Do not work inside the equipment unless totally familiar with electrical circuits Hazardous voltage which can cause electrical shock burn or serious injury exists inside the equipment Display Unit Maintenance Handle the equipment with care te he is Damage can cause corrosion Clean the screen and filter Keep heater away from the regularly Cover the equipment equipment when it is not in use rr An anti static spray may be used Heat can damage the to clean the screen Do not use DISPLAY UNIT equipment Allow sufficient chemical based cleaners they can ventilation remove paint and markings Figure 7 1 Display unit maintenance Keep magnets and cassette tapes away from the display unit Magnets or magnetic material can can distort the picture 7 1 Hull Unit Maintenance A CAUTION The zinc block near the transducer must be replaced yearly The junction between the transducer and main shaft may corrode which can res
30. nking 2 Press the MENU key The last used menu among Menu 1 Menu 2 and System appears The menu below is Menu 1 MENU 1 RANGE SW U D GAIN SW L R MENU MODE MENU 1 MENU 2 SYSTEM DISPLAY MODE NORM TEXT TX OUTPUT PULSELENGTH TX CYCLE TVG NEAR TVG FAR AGC NOISE LIM VP IR HOR BEAM ANGL WIDE NARROW RES COLOR CURVE LINEAR 2 3 COL EMPHASIS 1 LOW 2 4 HIGH FUNC1 PROG USER1 SETUP1 SETUP SETUP3 FUNC2 PROG USER2 SETUP1 SETUP2 SETUP3 USER PROG USER1 USER2 DEGAUSS EXEC AUTO DEGAUSS OFF TIMER Requires INTERFACE Board Locked setting Figure 3 2 Menu 1 3 Operate the RANGE control to select item The selected item is highlighted in green and current setting in white 4 Operate the GAIN control to change setting Note Items in red are locked 5 Press the MENU key to register selections and close the menu Menu 1 description 3 4 This menu contains the same items as the Scan menu See page 3 2 for description Menu 2 description MENU 2 RANGE SW U D GAIN SW L R MENU MODE MENU 1 MAUR SYSTEM EXT KP SYNC ON RANGEMARKER M 1 2r OFF BEARINGSCALE XRD oFF CURRENT MARK M OFF COURSE MARK E sR OFF HEADING INDI AZI TRUE CURRENT INDI AZi TRUE 180 EVENT INDI AZI TRUE 180 MARK INDI BE 360 POSITIONDATA ID 1 Requires INTERFACE Board Locked setting Item Description EXT KP SYNC Turns external
31. olume of fish schools e Markers and indications keep the operator abreast of fishing conditions e Remote controller option provides for armchair control of gain range and tilt functions e New gain range or tilt setting appears in large characters whenever corresponding con trol is adjusted e Function keys automatically setup the equipment to perform specific task e High power MOS FET transmitter ensures reliable operation under any condition System Configuration DISPLAY UNIT NAVIGATOR ee CSH 7010 CURRENT INDICATOR GYROCOMPASS SPEED LOG REMOTE CONTROLLER CSH 7040 TRANSCEIVER UNIT CSH 7020 RECTIFIER RU 3424 Option 100 115 VAC Ship s Mains 200 230 VAC 24 VDC 1 50 60 Hz HULL UNIT Interface Module CSH 7050 option required to connect external equipment 600 mm stroke CSH 7030 400 mm stroke CSH 7031 OPERATIONAL OVERVIEW Equipment Overview All operations of the CSH 7 are carried out through the display unit and the remote controller option The uncluttered straight forward control panel of the display unit provides intuitive op eration If you change a control setting you will see the associated reaction on the display almost immediately The handy remote controller provides armchair control of range gain and tilt functions ie FURU
32. olution is to the nearest degree UNIT Selects unit of depth measurement meters feet fathoms or passi braza SHIP S SPD BR Selects source of ship s speed bearing input log gyrocompass current indicator or navigator LOG PULSE Selects specifications of speed log connected 200 or 400 pulses mile Consult the operator s manual of the speed log CI BAUD RATE Selects current indicator baud rate 4800 2400 or 1200 baud Consult the operator s manual of the current indicator NAV FORMAT NAV BAUD RATE Selects format of connected navigator CIF NMEA0183 or NMEA0182 Consult the operator s manual of the navigator Select current indicator baud rate 4800 2400 or 1200 baud Consult the operator s manual of the navigator NAV DATA Selects source of position data GPS LC Loran C DC Decca DR Dead Reckoning LA Loran A or AUTO AUTO selects position data with the highest priority GPS has the highest priority MENU SELECT Locks unlocks settings SUB TEXT INDI For use by technicians LANGUAGE Selects language to use SELF TEST Selects a self test DEFAULTS Resets to default settings by pressing the TX key Figure 3 4 SYSTEM Menu description FINE TUNING THE PICTURE Eliminating Unwanted Feeble Echoes Echoes from targets such as seabed and fish return to the trans ducer in order of distance to them and when we compare their intensities at th
33. ontrol panel for proper operation PANEL TEST 000 00 mn 0 00 0 0 0 0 0 000 X 0 000 Y 0 PRESS MENU 2 or 3 SECONDS TO STOP SELFCHECK For Remote Controller Option Press each control one by one Corresponding figure changes if control is normal Figure 8 3 Results of panel test Color test The color test checks for proper display of all colors COLOR TEST WH RED GRN PRESS MENU 2 or 3 SECONDS TO STOP SELFCHECK Figure 8 4 Color test display Gray test This test checks for proper display of monochrome characters and markers Concentric rings and a monochrome test bar are displayed GRAY TEST RE PRESS MENU 2 or 3SECONDS TO STOP SELFCHECK Figure 8 5 Gray test display Conti test This test continuously checks the display and transceiver units In addition to the devices checked in the single test the DROM and DRAM are also checked CONTI TEST MAIN 105 0557 Oxx ROM OK RAM OK PW OK DRAM OK DPRAM OK TRX 105 0569 0xx ROM OK RAM OK DROM OK VF 105 0267 0xx ROM 0K RAM OK DPRAM OKi GYRO OK LOG OK PRESS MENU 2 or 3SECONDS TO STOP SELFCHECK Figure 8 6 R
34. ove it if it is not already blinking Press the MENU key and select Menu 1 Using the RANGE and GAIN controls set menu options as desired Operate the RANGE control to select USER PROG Operate the GAIN control to select USER1 for F1 key or USER2 for F2 key Press the TX key to register the settings Press the MENU key to register settings and close the menu Note When you change the contents of USER 1 or USER 2 do the next procedure Selecting program to use Selecting program to use 1 Press the F1 or F2 key to light the lamp above it Zi Press the TX switch to blink the lamp above it if it is not already blinking Press the MENU key and select Menu 1 Operate the RANGE control to select FUNC1 PROG or FUNC2 PROG slected at step 1 Operate the GAIN control to select program to use USER1 or USER2 SETUP1 SETUP2 or SETUP3 6 Press the TX key to register the setting 7 Press the MENU key to close the menu Enabling disabling a program Press the F1 or F2 key to light the lamp above it to enable pro gram Press key again to disable Event Markers Own Ship Event Markers The event marker denotes important items on the display such as a fish school and the own ship event marker marks own ship position Ten event markers and ten own ship event markers may be entered The CSH 7 denotes the latest event marker as and other event markers as The own ship event marker is a tri angl
35. r 180 indication system relative to the ship s heading In the latter case B is indicated as follows BOI O L P on the port side BL C C S on the starboard side The 360 or 180 indication system can be selected on Menu 2 Detecting Fish Schools Aurally Occasionally you will be preoccupied with other tasks and un able to concentrate on watching the sonar picture In such cases you can use the audio function to aurally monitor fish echoes through the built in speaker 1 Operate the trackball to move the trackball marker to the direction you want to monitor through the speaker 2 Press the R B key The bearing marker will appear in the direction of the trackball mark and echoes in that direction are monitored through the speaker Adjust the volume with the AUDIO control on the front panel 3 To turn off the audio function erase the bearing marker by placing the trackball marker near own ship marker and press ing the R B key Trackball marker Bearing marker Figure 5 2 Area monitored in audio function sample Relocating Fish School for Easy Observation When a fish school is located near the edge of the screen and inconvenient for observation use the off center function to re locate the fish school to the desired place on the screen Fish echo x e Fish gt S echo OFF CENTER key turned on Own Trackball ship marker Figure 5 3 Off center funct
36. r or stepping stool for example Do not place objects on the top of the equipment The equipment can overheat or personal injury can result if the object falls Do not exceed speed noted in the speci fications when operating the equipment or lowering or raising the transducer The transducer may become damaged The zinc block attached near the transducer must be replaced yearly The junction between the transducer and main shaft may corrode which can result in loss of the transducer or water leakage inside the ship POSSIBILITY OF INJURY 1 If breaker hull unit trips do the following 1 Turn off power swich on hull unit 2 Wait 60 sec after breaker has tripped 3 Press breaker 2 Turn off hull unit before using hand crank TABLE OF CONTENTS FOREWORD A Word to CSH IWS sengau A An AAA ieee A A v PG AINE S tooniseen AA A A aS v System Conn ourat 0 eena Reet e a e E E E EES vi OPERATIONAL OVERVIEW Equipment CW CIVIC Wy a ASA a E AA Eae 1 1 Display Unit Control Panel Description en ee ana en naa naaa nanas 1 2 Tuming the Power On Off 2nd nn ann ann An AAA an nn AAA 1 2 Adjusting Screen Brilliance Control Panel Backlighting aaa 1 3 Lowering the Transducer ann nn Baa Baa AA AA an A A 1 3 Selecting 2 Display Rang Onn nn ee ae e e AE BABA 1 3 pete the Wilt Angle nn nn nn A na Bn e AAA A AAA 1 3 Adjusine Gan en AA E E A nn 1 7 MARKERS AND DATA Standard Markets a
37. u description Table 3 1 Scan menu description Item Description DEGAUSS Enables degaussing of the screen by pressing the TX key on the menu screen AUTO DEGAUSS Selects how to automatically degauss the screen TIMER degausses the screen every three minutes and GYRO degausses the screen whenever the ship turns approximately 45 DISPLAY MODE Selects a picture display mode NORM Displays the soner picture on entire screen TEXT Displays soner picture on upper 9 10 of screen and text on bottom 1 10 Text includes position speed course depth and tidal current TX OUTPUT Sets output power in eleven steps 0 is minimum 10 maximum Set to 10 for normal use and use a lower power when sea surface reflections or seabed echo obscures fish schools in short range and shallow water operations Note that the output power changes 10 seconds after the setting is changed PULSELENGTH Sets a transmission pulselength in eleven settings 0 is minimum and 10 maximum TX CYCLE Sets transmission repetition rate in eleven settings 1 for longest and 10 shortest TVG NEAR Controls receiver sensitivity at short and long ranges TVG FAR respectively FAR Over 100 m position 5 is the standard setting NEAR Within 100 m position 5 is the standard setting AGC Suppresses echo tail of strong targets such as the seabed for easy recognition of fish schools adjacent to the bottom Position 1 or 2 is the
38. ult in loss of the transducer or water leakage inside the ship Apply MOLYTONE grease 2 every six months Raise transducer and coat main shaft with DAPHAECOROAEX 2 every six months Dry dock ship and clean transducer face yearly Apply single coat of MARINE STAR 20 Mod Red N anti foulant to transducer face to keep HULL UNIT marine life off the transducer Figure 7 2 Hull unit maintenance 7 2 TROUBLESHOOTING A WARNING Do not work inside the equipment unless totally familiar with electrical circuits Hazardous voltage which can cause electrical shock burn or serious injury exists inside the equipment When the Transducer Cannot be Retracted When the transducer cannot be completely retracted within 35 seconds after pressing XDCR NOT RETRACTED blinks at the screen center and the alarm sounds If this occurs do the following Le gt gt 2 The power switch cannot be turned off because the trans ducer cannot be retracted Turn off the main breaker for the transceiver unit to stop operation Confirm that the net is not entwined around the transducer Confirm that the breaker inside the hull unit is on Check the mains fuse in the transceiver unit Apply the power again Check if the transducer is retracted in the tank If it is not the main shaft may be bent Cut off the power again and manually raise the transducer up to the highest position possible by the hand crank See
39. ure or sea conditions even if it is located within the display range in use 0 5 to 10 msec interlocked with range eleven settings 0 2 sec to 4 0 sec interlocked with range eleven settings can be synchronized with external keying pulse Echoes in the direction of the bearing marker are audibly monitored with built in loudspeaker 2 W 1 kHz High power MOS FET amplifier Low noise superheterodyne continuously scanning beam forming GAIN TVG near far AGC 55 kHz or 70 kHz Tilt Angle Tilt beam angle Hull Unit 0 to 55 continuously variable CSH 7030 CSH 7031 Transducer travel 600 mm 400 mm Raising time 25 SEC 20 sec Lowering time 20 sec 14 sec Driving system Remote electric control Allowable ship s speed 18 knots max 16 kts during raise lower operation Power Supply Power Consumption Color Display unit 24 VDC 160 W average maximum 280 W ship s speed 16 knots raising transducer 100 VAC operation with optional rectifier Panel N 3 0 Newtone No 5 Cover 2 5GY 5 1 5 Transceiver unit hull unit Munsell 2 5G 7 2 Newtone No 5 Environmental Conditions Temperature Humidity 0 C to 50 C Less than 85 9 3
Download Pdf Manuals
Related Search