Furuno MODEL CSH-73 Operator'S Manual Download Page 24 | Manualshive

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3-4

Suppressing Seabed and Sea Surface Reflections in
Shallow Waters

Data setting window: TVG•TX, OUTPUT

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 controls, 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 by adjusting the OUTPUT
control instead of turning down the gain. The picture becomes
clearer when output power is reduced rather than when the GAIN
is decreased as illustrated below.

TVG and AGC
adjusted with
OUTPUT kept high

OUTPUT decreased
with GAIN kept
constant

WRONG
METHOD

CORRECT
METHOD

Fish echo

Fish echo

Seabed echo

False seabed echo
Surface echo

Figure 3-3 How to suppress seabed and sea surface reflections
in shallow waters

Rejecting Sonar Interference and Noise

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.

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Summary of Contents for MODEL CSH-73

Page 1: ...COLOR SCANNING SONAR MODEL CSH 73 ...

Page 2: ...8 65 4200 FIRST EDITION FIRST EDITION OCT OCT 1997 1997 Printed in Japan Printed in Japan All rights reserved All rights reserved C C APR APR 05 2002 05 2002 PUB No PUB No OME 13080 OME 13080 00080806200 00080806200 00080806200 00080806200 DAMI DAMI CSH 73 CSH 73 0 0 0 8 0 8 0 6 2 0 0 0 0 0 8 0 8 0 6 2 0 0 OME13080C00 OME13080C00 OME13080C00 OME13080C00 O M E 1 3 0 8 0 C 0 0 O M E 1 3 0 8 0 C 0 0 ...

Page 3: ...ft may corrode which can result in loss of the transducer or water leakage inside the ship 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...

Page 4: ...e Transducer 2 1 Selecting a Display Mode 2 2 Selecting a Display Range 2 3 Setting the Tilt Angle 2 3 Adjusting the Gain 2 4 Measuring Range and Bearing to a Target 2 4 FINE TUNING THE PICTURE Eliminating Unwanted Feeble Echoes 3 1 Suppressing Seabed Tail 3 3 Suppressing Seabed and Sea Surface Reflections in Shallow Waters 3 4 Rejecting Sonar Interference and Noise 3 4 Adjusting Beamwidth 3 7 MAR...

Page 5: ...11 The Event Mark 7 12 True Motion Display 7 14 Plotting Net Location Mark 7 15 Setting Distances Between Net Sonde Transmitters 7 16 Observing Net Behavior 7 17 Port Starboard Horizontal Slice Displays 7 18 Turning Marks Data On Off 7 20 SAVING REPLAYING PICTURE Initializing Memory Cards 8 1 Saving the Picture 8 2 Transferring Echo Data from Internal Memory to Memory Card 8 2 Saving Net Shooting ...

Page 6: ... Interface Unit CS 120A Self Test 11 5 MAINTENANCE Display Unit Maintenance 12 1 Hull Unit Maintenance 12 2 SPECIAL MENU DESCRIPTION SYSTEM Menu Description 13 1 DATA SET Menu Description 13 4 INIT SET TEST Menu Description 13 7 MENU TREE A 1 SPECIFICATIONS SP 1 INDEX IN 1 ...

Page 7: ... 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 73 Color Scanning Sonar is a half circle multibeam electronic scan ning sonar which detects and instantaneously displays fish schools and underwater condi tions in 16 colors on a 15 non glare high resolution CRT screen The main features of the...

Page 8: ...FNZ JOINT BOX CS 170 TRANSCEIVER UNIT CSH 710 SHIP S MAINS 100 VAC 1φ 50 60 Hz HULL UNIT CSH 71080 800 mm stroke CSH 71120 1200 mm stroke including POWER SUPPLY UNIT CSH 720 SHIP S MAINS 100 110 220 VAC 1φ 50 60 Hz 110 115 220 230 VAC 1φ 50 60 Hz SPEED LOG NAVIGATOR CURRENT INDICATOR COLOR VIDEO SOUNDER AD CONVERTER E S INTERFACE UNIT ECHO SOUNDER COLOR VIDEO SOUNDER NET SONDE SHIP S MAINS 100 VAC...

Page 9: ...E FISH ESTI MATE1 EVENT2 TARGET LOCK OFF CENT ESTI MATE2 DIM CONT BRILL AUDIO POWER TRANSDUCER PUSH OPEN SUB PANEL 1 MAIN PANEL SUB PANEL 2 TRAIN 1 2 3 DISPSELECT DATA d c d EVENT TGTLOCK ESTIMATE 1 NETCOURSE FISH OFF CENT TX 1 2 3 4 FUNCTION 5 RANGE GAIN SHOOT MEMO TGT SLICE RECALL AUTO AUTO BOOST TILT TRAIN SCANDEPTH REMOTE CONTROL BOX Figure 1 1 Display unit and remote control box ...

Page 10: ... s e h t n o s n r u T N O f f o d e n r u t s i 1 l e n a p b u s n i y e k X T e h t n e h w s k n i l b d n a r e c u d s n a r t e h t g n i t c a r t e r r e t f a s s e r P m e t s y s e h t f f o s n r u T F F O R E C U D S N A R T s e d i v o r p y e k w o r r a n w o d l l a m s e h T r e c u d s n a r t e h t r e w o l d n a e s i a R P U e h T n o i s u r t o r p l l u f y e k w o r r a...

Page 11: ...eam between 0 and 90 AUTO TILT WIDTH Automatically tilts the sounding beam up and down in 2 steps within the tilt angle selected by the WIDTH key The lamp above the key lights when automatic tilt is on NET COURSE Marks location of net TARGET LOCK Tracks a fish school EVENT Inscribe event mark on the display to find horizontal range depth and bearing to a target Note that the EVENT key can function...

Page 12: ...nu operation and returns control to the sonar picture When in a sub menu it returns to previous sub menu HELP Provides operating information for current menu cd Select items on menus CARD REPLAY Replays card stored control and menu settings COLOR Changes display color among four choices NET REPLAY Replays internally stored net shooting data To replay press key to light lamp above it select item to...

Page 13: ...X This example shows settings of TVG and TX Figure 1 4 Sub panel 2 Sub panel 2 control description Main Item Item Setting Range Description Normal Setting Main Sub TVG TX TVG NEAR 0 9 Adjusts receiver gain within 100 m 5 MEDIUM 0 9 Adjusts receiver gain between 100 m and 400 m 5 FAR 0 9 Adjusts receiver gain beyond 400 m 5 TRANS MIT CYCLE 0 9 Sets Tx cycle 9 is normal setting fastest 0 synchro niz...

Page 14: ...t Recorder RANGE DN RNG 16 Pos Sets depth range of echo sounder picture Sets range of net recorder downward sounding 160 m GAIN 0 10 Adjusts receive sensitivity 5 SHIFT UP RNG 0 1000 m Sets display start depth of echo sounder picture Sets range of net recorder upward sounding 0 m ES1 Net Recorder NL 0 10 Rejects blue dots caused by dirty water on entire screen 0 COLOR 0 9 Eliminates echoes display...

Page 15: ...T r o t c e s o i d u a s n a c s h c i h w F F O H T D I W 0 1 0 2 0 4 0 6 g n i n n a c s c i t a m o t u a s e s o o h C g n o m a h t d i w 0 1 0 2 0 4 d n a 0 6 0 1 O I D U A M L A H S I F M R A L A F F O N O F F O N O f f o n o m r a l a h s i f s n r u T F F O L E V E L 5 1 0 h s i f h c i h w t a l e v e l o h c e s t e S 5 1 0 s r e b m u N s d n u o s m r a l a n o i t a t n e s e r p 6 ...

Page 16: ...ooting mark Saves picture to memory card Not used Replays a stored picture Varies the tilt angle of the sounding beam between 0 and 90 Automatically tillts sounding beam in 2 steps within sector selected by WIDTH key Not used Adjust receiver sensivity Selects display range Press to enter mark shown on key or shift screen center aises lowers the transducer Raises transducer Mid protrusion Full prot...

Page 17: ...Lowering the Transducer Press d full or d mid key The lamp above the key blinks during lowering of the transducer and lights when the transducer is completely lowered In normal use fully lower the transducer The transducer extends 1200 mm below the ship s hull providing stable and cavitation free soundings If the transducer may become entangled in the net after shooting the net for example partial...

Page 18: ...ext window at the screen bottom by turning on DATA DISPLAY in the user menu Normal scanning picture appears on the upper 5 8 of the screen and the signal fed from the echo sounder on the lower 3 8 This mode is suitable for judging fish school concentration When two echo sounders are connected each pressing of the E S key alternately selects echo sounder 1 or echo sounder 2 Note that a net recorder...

Page 19: ... proper tilt angle is important when searching for fish The beam of the half circle scanning sonar is fan shaped as in A below and it swings up and down according to the setting of the TILT lever If you look at the angle between the horizontal plane sea surface and several points on the beam it can be seen that the angle is maximum in the center of the beam q and becomes smaller as it goes toward ...

Page 20: ...the control somewhere between positions 3 and 7 Gain low Gain proper Gain high Figure 2 2 Gain settings and resulting pictures Measuring Range and Bearing to a Target Operate the trackball to place the trackball mark on the target you want to measure the range and bearing The range and bear ing appear at the upper left corner on the screen ª ª ª B Figure 2 3 Location of range and bearing indicatio...

Page 21: ...d 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...

Page 22: ...inus key 5 Locate fish school on a long range setting about 800 meters which is approaching own ship 6 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 suddenly changes to weaker colors as the fish enters MEDIUM and NEAR ar eas ...

Page 23: ...l to shorten the pulselength in order to separate fish echoes from seabed reflections Decrease the PULSELENGTH setting to shorten the pulselength For search of surface and midwater fish in which seabed reflections are not so strong use the longest pulselength 10 2AGC data setting window SIGNAL SIGNAL PROCESS While it is ideal to suppress seabed echoes with the AGC con trol alone there are some fis...

Page 24: ...instead of turning down the gain The picture becomes clearer when output power is reduced rather than when the GAIN is decreased as illustrated below TVG and AGC adjusted with OUTPUT kept high OUTPUT decreased with GAIN kept constant WRONG METHOD CORRECT METHOD Fish echo Fish echo Seabed echo False seabed echo Surface echo Figure 3 3 How to suppress seabed and sea surface reflections in shallow wa...

Page 25: ...t one of the following Interference rejector data setting window SIGNAL SIGNAL PROCESS 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 Changing T...

Page 26: ...ing window SONR BEAM SONAR If interference cannot be suppressed by the interference rejector IR or Tx cycle change the setting of F SHFT from 1 to 2 Noise limiter data setting window SIGNAL SIGNAL PROCESS Weak unwanted reflections colored light blue or green appear when the water is dirty plankton layers exists or due to ship s noise The noise limiter NL can reduce the effects of these unwanted re...

Page 27: ...on the data setting window Table 3 1 Beamwidth adjustment menus Menu Application HOR Set to 0 for normal use The higher the setting the narrower the beam This control may be used together with the AGC and NL controls to suppress sea surface reflections and seabed echoes ...

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Page 29: ...4 1 MARKS AND DATA Marks Data and Display Mode Normal display mode Figure 4 1 Marks and data appearing in the normal display mode ...

Page 30: ...gure 4 2 Marks and data appearing in the normal display mode w text Figure 4 3 Marks and data appearing in the echo sounder conbination display mode Normal display mode w text Echo sounder combination display ...

Page 31: ...ntheses Accordingly both are equal when target lock is on In automatic tilt the upper indication shows the tilt angle set by the TILT lever and the lower indication the instantaneous tilt angle at which the sonar actually works The train angle data shows the direction of sonar beam center set with the TRAIN lever Trackball Data B Trackball data Slant range Horizontal range Depth B Bearing Bearing ...

Page 32: ...n for off center display sets location for mark input The trackball or arrow keys on the remote control box controls this mark Erasable Marks and Data Mark Data Description Latest Event Mark Data B The position data of the latest event mark that is horizontal range current depth and bearing shows the latest event mark s original depth and remains unchanged regardless of ship s movement or tilt ang...

Page 33: ...from the fish speed mark to the latest fish marker is shown by distance course C and speed S at the lower right corner of the screen Range and Bearing Mark Data B R These marks are used for monitoring echoes through the loudspeaker and also for displaying horizontal slice picture If the target lock function is on the bearing marks follow the movement of the target lock mark This data appears when ...

Page 34: ...owever that no tidal current mark appears if the tidal current speed is less than 0 2 kts Current direction can be shown as to or from by selecting CURRENT VEC Current Flow Dir on the USER menu In the normal mode with text speed direction and depth of the current are shown for three layers C1 C2 C3 In the echo sounder and history modes only the speed appears C1 C2 C3 on the echo sounder or history...

Page 35: ...omatically changes to ship s speed dependent advance rate from the moment the SHOOT key is pressed provided there is speed log input The E S picture advance range data shows the distance between the right and left edges of the echo sounder picture window in the ship s speed dependent advance Since the net length plus wire length set on the DATA SET menu is used as this distance data the echograms ...

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Page 37: ...All LEDs light while keys are held down The SYSTEM menu DATA SET menu and INIT SET TEST menu are for use by service technicians See page 16 1 for de tails USER Menu Operation The menu operating procedure is the same for all types of menus Below is the basic menu operating procedure for the USER menu 1 Press the MENU key to open the USER menu USER MENU Select item with dc keys and press MENU key Pr...

Page 38: ...IST Window DSP Fish Histogram AUDIO ON PRT STBD OFF H Slice HIST DSP GRPH Figure 5 2 HIST DSP GRPH menu 4 Operate the up and down arrow keys in sub panel 1 to select menu item and the right and left arrow keys to select option 5 Press the END key to close the menu Press the key again to display picture Note The HELP key provides menu operating information Menu screen location and display mode Menu...

Page 39: ... 2 Fish Mark On Track Data Text Window ES Window Turns those marks on off ES Window selects tidal current data or net sonde data which are displayed on the ES combination display while shooting the net MARK DSP 1 Range Bearing Heading Mark Range Rings Bearing Scale Auto Scan Width Auto Train Width Turns those marks on off Note that turning off Range Bearing mark also turns off the data display MAR...

Page 40: ...s a n o i t c e r i d t n e r r u c l a d i t s y a l p s i d E R U T C I P E V A S d o h t e M e v a S s e o h c e e v a s o t w o h s t c e l e S o t n e e r c s e l o h w n o a t a d d n a s e o h c e s e v a S e l o h W d r a c y r o m e m o t k r a m e t a m i t s e e d i s n i s e o h c e s e v a S K M t s E y r o m e m l a n r e t n i n e e r c s e l o h w n o a t a d d n a s e o h c e s e ...

Page 41: ...ain display mode TX ON OFF USER menu SYSTEM menu DATASET menus and data setting win dow The function keys are useful for quickly setting up the so nar for a specific purpose such as seabed detection Programming the Function Keys 1 Tune the sonar as desired 2 Press the MENU key 3 Select the FUNCTION KEYmenu and press the MENU key FUNCTION KEY Execute Register USER MENU Figure 6 1 FUNCTION KEY menu ...

Page 42: ...on Key Press function key F1 F3 desired Function Key Fine Tuning The function key fine tuning keys let you fine tune the items shown in the table on the next page when a function key is active Note Register function keys beforehand to use this function 1 Press desired function key The lamp above the function key pressed lights 2 Press the or key as appropriate the key to lower the setting to de em...

Page 43: ...ss END key to return to main menu List Execute Save Execute Delete Execute Initialize Execute Figure 6 2 CARD UTILITY menu 3 Select Save and press the MENU key Note If the card has not been initialized initialize the card by selecting Initialize and then save Replaying Function Key Settings from a Memory Card Press the CARD REPLAY key on sub panel 1 Note When function key settings are replayed fro...

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Page 45: ...y 6 transmissions every 4 transmissions every 2 transmissions For example when the RANGE control TILTlever and WIDTH key are set to 800 m 8 and width 1 respectively the tilt angle varies at every transmission as follows 8 8 10 10 12 12 14 14 12 12 10 10 8 8 6 6 4 4 2 2 4 4 6 6 8 8 Figure 7 1 Tilt angle setting Table 7 2 Automatic scan range at menu setting NARROW of OTHER sub menu in the INIT SET ...

Page 46: ... the trackball mark on fish school you want to track 2 Press the TARGET LOCK key to light the lamp above it The target lock mark appears on the fish school and tracking begins Depth 60 60 A B C D Figure 7 2 Target lock mark and target lock data Note 1 Range offset is applied to both shipís movement and fish school movement on the screen Tilt angle is not offset Note 2 When the target goes out of t...

Page 47: ... Open the sub panel 2 2 Select DELETE MK 3 Press the key for DELETE MARK FISH Choosing target lock mode Two types of target lock are available target mark and fish Target mark Tracks the target lock mark changing range and tilt angle according to ship s movement The fish school itself is not tracked Fish tracking Tracks fish schoolís horizontal movement chang ing range and tilt to track movement D...

Page 48: ... greater than 60 degrees the lamp above the TARGET LOCK key flashes to call your attention Note 2 Target lock position and data are calculated according to tilt angle Note 3 The bearing mark moves to the target lock mark loca tion when target lock becomes active Bearing to the target lock mark is shown Note 4 Target lock is temporarily disabled when the distance to the tracked fish school is less ...

Page 49: ...et lock Fish Track Window Set distance at which to trace fish school track Fish Spd Update 15 sec 30 sec 45 sec 60 sec Choose update interval for fish speed readout Setting Target LK Window Normal Large Largest Choose size of target track window not shown 10m Auto Select item with keys and press MENU key Press END key to close menu Setting range 1 to 10 Setting range 1 to 15 Setting range 2 to 20 ...

Page 50: ...l set here is tracked Fish Speed Limit Sets fish speed at which target lock is cancelled Fish Track Window Set distance at which to track fish schoolís track when it exits the tracking window Fish Speed Update Selects update interval of fish speed readout 5 10 20 or 30 sec onds Target Lock Window Sets size of target lock window The window itself is not show on the display NORMAL 32 x 32 LARGE 64 x...

Page 51: ...chool is approaching and lowers when the school is going away 1 Operate the trackball to place the trackball mark to the direc tion you want to monitor through the speaker 2 Press the R B key The bearing mark appears on the display Echoes in a 30 60 90 180 or 330 sector centering the bearing mark are monitored through the speaker You can adjust speaker volume with the AUDIO control 3 To change cov...

Page 52: ...s the key of the ZONE item 3 Operate the trackball to place the trackball mark on the start ing point of the alarm zone 4 Press the key 5 Rotate trackball clockwise to select the end point The dis play paints a fan shaped alarm zone 6 Press the key Starting point End point Alarm zone Figure 7 6 How to set the fish alarm zone Note There must be at least three degrees difference between the starting...

Page 53: ...e you want to relocate the own ship mark 2 Press the OFF CENT key 3 To move the own ship mark back to the screen center press the OFF CENT key again Own ship mark Place trackball mark here for example Press the OFF CENT key Fish school Own ship mark moves to trackball mark position Figure 7 7 How to relocate fish schools ...

Page 54: ...l Relative vol ume is shown by a figure between 0 and 100 below the es timate mark When inside the mark is filled with reddish brown volume figure is 100 2 Operate the trackball to place the trackball mark on another fish school and press the ESTIMATE 2 key 3 Compare estimate figures for each fish school 4 To turn off the estimate marks press their respective keys Estimate mark 2 Estimate mark 2 d...

Page 55: ... ap pears on the target and the 2nd latest fish mark appears on the location selected at step 1 At the bottom left corner of the screen the distance between the two fish marks and fish school course and speed appear 4 If you want to delete fish marks and fish speed marks open data setting window select DELETE MK and then press the FISH key Latest fish mark Latest fish mark Fish movement Figure 7 9...

Page 56: ...o a location some distance from current position This function requires speed and heading inputs There are two types of event marks event mark 1 and event mark 2 10 of each type of mark can be displayed The unit marks the latest one by for event mark 1 and by for event mark 2 Older event marks are displayed by a cross plus event number event mark 1 or an inverted Y with event number event mark 2 W...

Page 57: ...e from direction of mark Bottom left hand corner of screen Figure 7 11 Event mark description Plotting an event mark on the display is equivalent to dropping a buoy with an anchoring chain that extends from surface to bot tom The buoy is fixed at its present geographical location but the marker on the display moves to a point where present beam plane intersects the anchor chain of the buoy as the ...

Page 58: ...e fixed and own ship and fish echoes move on the display in accordance with their true courses and speeds Thus you can observe own ship and fish echo movement with respect to the seabed Open the data setting window and select SONR BEAM Set UP TM in the SONAR menu to TM This function requires speed and heading inputs Although the true motion mode is available for use in all modes use in the combina...

Page 59: ...key The net location mark is de picted by dotted ring with a diameter equivalent to that of your purse seine net being centered on the trackball mark Trackball mark Net location mark Figure 7 13 Net location mark 3 To adjust the location of net location mark move the trackball mark 4 When the location is finalized press the NET COURSE key again The dotted ring is replaced by solid ring and the lam...

Page 60: ...ers 2 and 3 in meters R1 R0 R2 Figure 7 14 How to measure distances between transmitters How to set net sonde transmitter distances 1 Press the MENU key while pressing and holding down d The DATA SET menu appears DATA SET MENU NET SONDE NET SONDE XMTR Select item with dc keys and press MENU key Press END key to close menu 3 0m 0m 0m 0m 0m Qty Distance 0 1 2 9 10 t Setting range 0 to 10 s t Setting...

Page 61: ...he net shooting mark appears at the own ship mark and also at the right edge of the echo sounder picture Afterwards whenever a net sonde transmitter on the net is thrown into water a net sonde mark appears on own ship mark and moves with ship movement The depths of net sonde transmitter units are digitally displayed at the lower left of the screen after the receiving transducer is placed into wate...

Page 62: ... on the SYSTEM menu and displays them on the lower 1 3 of the screen If the bearing width is set to 90 degrees for example the CSH 73 displays echoes in both port and starboard directions The picture is scrolled vertically to downward Port Starboard Sampling Angle Display Sector Picture Advance Direction Port Direction Starboard Direction Port starboard sampling angle can be set between 0 and 180 ...

Page 63: ...120 Fixed Latest Picture D Figure 7 18 Horizontal slice display 1 In the normal display place the trackball mark on the echo you want to see displayed in the horizontal display then press the R B key The horizontal slice marker 120 δεγρεεσ in width and cen tered on the bearing mark appears on the display Echoes within the marker appear in the window at the bottom of the display scrolling leftward ...

Page 64: ...lected one by one Each press of or deletes 1 5 of overall length of track Turning marks on off through the user menu The following marks can be turned on off thru the USER menu Event Mark 1 Event Mark 2 Fish Mark On Track Data Text Window ES Window Range Bearing Heading Mark Range Rings Bearing Scale Auto Scan Width Auto Train Width Ship s Track Net Movement Plot Fish MK Connect Fish Tracking MK F...

Page 65: ... h s t e N y e k T O O H S y r o m e m l a n r e t n I Initializing Memory Cards Before you save information to a memory card it must be initial ized formatted 1 Press the MENU key to display the USER menu 2 Select the CARD UTILITY menu 3 Select Initialize It takes more than two minutes to initialize a memory card 4 Press the END key a few times to display the user menu The memory card stores 256k...

Page 66: ... takes about two minutes to save a whole screen to a memory card During this time the normal picture is displayed but the unit accepts no key input Transferring Echo Data from Internal Memory to Memory Card 1 Press the MENU key to display the USER menu 2 Press arrow keys to select CARD ECHO DAT 3 The display shows all inside estimate mark pictures stored in the internal memory Using the arrow keys...

Page 67: ...o memory card 1 Press the MENU key 2 Press arrow keys to select CARD NET DATA and press the MENU key 3 If desired according to on screen instructions select fish species to be added to net shooting data as a comment and then press the MENU key 4 If desired enter fish quantity estimate by a selecting number with up or down arrow key b selecting place with right or left arrow key c registering value...

Page 68: ...ate mark is internal memory saved picture followed by memory card contents Net shooting data 1 Press the NET REPLAY key on sub panel 1 2 At the screen bottom comments are listed Select the item to replay 3 After viewing the data press the NET REPLAY key again to escape Deleting Memory Card Contents You can delete unnecessary data from a memory card 1 Press the MENU key to display the USER menu 2 S...

Page 69: ...a thick line which realistically shows the bottom contour When the tilt angle is decreased the seabed trace becomes wider and weaker By observing the seabed condition on the screen you may prevent the net from being damaged by a reef or a shipweck Tilt 90 Tilt 60 Sea surface reflections Seabed Sea surface reflections Seabed Sea surface reflections This distance shows the depth of the water Seabed ...

Page 70: ... tilt angles From the left figure the operator can know the horizontal distribution of the fish school and from the right figure the vertical distribution Width Horizontal distribution Tilt Sector Center Range 20 0 400m Thickness Vertical distribution Depth Distance Tilt Sector Center Range 90 300 400m Surface Fish School Tilt 5 Seabed Sea surface reflections Bottom Fish School Tilt 40 Seabed Fish...

Page 71: ... area as illustrated below Sea surface Reflections Figure 9 3 Sea surface reflections Wake 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 beyon...

Page 72: ... Reflections Main lobe Sidelobe Figure 9 5 Sidelobe echoes Noise and Interference Interference from a sonar on another ship appears on the screen as shown in A below This interference can be suppressed by changing the CYCLE setting in TVG TX on the data setting window Interference from electrical equipment on board own ship appears as shown in B below Noise from marine life ap pears on the display...

Page 73: ...occurs do the following 1 The power cannot be turned off because the transducer can not be retracted Turn off the main breaker for the display and power supply units to stop operation 2 Confirm that the net is not tangled in the transducer 3 Confirm that the breaker inside the raise lower control box mounted on the hull unit is on 4 Remove the cover of the raise lower control box Push the Red rese...

Page 74: ...10 2 Breaker Power Supply Unit F Photo No 1580 Hull Unit Main Shaft Hand Crank Figure 10 1 How to manually raise the transducer ...

Page 75: ...or serious injury exists inside the equipment DANGER Opening the Self Test Menu 1 Turn on the power while pressing and holding down the MENU key The INIT SET TEST menu appears 2 Press arrow keys to select SELF TEST followed by the MENU key INIT SET MENU SELF TEST Select item with dc keys and press MENU key Single Continuous Panel Execute Execute Execute Color Gray SIO Execute Execute Execute Figur...

Page 76: ... 105 0353 1xx ROM OK RAM OK 105 0352 1xx ROM OK RAM OK 105 0415 1xx ROM OK RAM OK BATTERY OK 105 0351 1xx 105 0445 1xx RX1 1X1 RX2 1X2 105 0343 002 ROM OK RAM OK ROM OK RAM OK ROM OK RAM OK ROM OK RAM OK CONTI TEST DCON DRAW DUAL ES SLICE PSIO PIF 105 0350 1xx ROM RAM DROM DPRAM DR DPRAM DU DPRAM PS P W EEPROM REACT 105 0366 1xx ROM RAM DROM VRAM DPRAM DC CLT 105 0381 1xx ROM RAM VRAM DPRAM DPRAM ...

Page 77: ... Y Figure 11 4 Panel test Color test This test checks for proper display color To escape from the test reset the power COLOR TEST Q S Q S Q R S T Q S Q S R T Q S Q S Q R S T Q S R T R T Q S Q S Q R S T T T S T S T T S S S T Q S Q R S T Q S Q S R T Q S Q S Q R S T Q Q R Q Q R Q Q Q R Q S Q R S T Q S Q S R T Q S Q S Q R S T S S T S S T S S S T R T R T Q R S T R T Q RS T Q S R R Q R R Q R Q R T R T Q...

Page 78: ...power GRAY TEST S S Figure 11 6 Gray test SIO test This test checks for proper communication between the display unit and transceiver unit and requires a jumper plug To escape from the test reset the power SIO TEST DRAW IF PISO PIF SIO SIO SIO1 SIO2 SIO1 NG NG OK NG OK Figure 11 7 SIO test ...

Page 79: ...st The results of the check appear on the digital display beside the DIP switch 3 Turn the DIP switch off after completion of the test 6 7 8 6 7 8 Turn 6 on Digital display If the readout shows 0 the unit is functioning properly If it is not working properly any of the following nine numerals or six alphabets appear Figure 11 8 Interface unit CS 120A cover opened ...

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Page 81: ...ay unit Handle the equipment with care Damage can cause corrosion DISPLAY UNIT Clean the screen and filter regularly Cover the equipment when it is not in use Heat can damage the equipment Allow sufficient ventilation Keep heater away from the equipment Magnets or magnetic material can can distort the picture An anti static spray may be used to clean the screen Do not use chemical based cleaners t...

Page 82: ...oulant to transducer face to keep marine life off the transducer Raise transducer and coat main shaft with DAPHAECOROAEX 2 every six months CAUTION The zinc block 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 Figure 12 2 Hull unit maintenance ...

Page 83: ... n o i t a g a p o r p r o f e t a s n e p m o c g n i t t e s l a m r o n e h t s i g o l 0 3 r e h t r a f r o m 0 0 1 m o t t o b l l a m s g n i h c r a e s r o f e l b a t i u S g o l 5 2 e n i l t s a o c r a e n r o r e t a w w o l l a h s n i h s i f P S D M T e g n a R y a l p s i D M T n o i t o m e r u t e h t n i e g n a r y a l p s i d a s t c e l e S R 6 1 r o R 3 1 m o r f y a l p s...

Page 84: ... u r t 0 6 3 r o g n i r a e b e v i t a l e r g n i r a e b e v i t a l e r Y A L P S I D A T A D g n i t t e S l o r t n o C d n a r a n o S n o i t a r e p o l a m r o n r o f F F O p e e K y l n o e s u y r o t c a f r o f e r a s n o i t p o k c o L T G T a t a D w o d n i W t x e T t a y a l p s i d o t a t a d r o s n e s l a n r e t x e s e s o o h C a t a d e l b a l i a v a l l a s e d i...

Page 85: ... n a v d a e v a h o t P K d n a t e n g n i t o o h s e l i h w n o i s s i m s n a r t h t i w d e z i n o r h c n y s e r u t c i P c e R t e N e d o m y a l p s i d e r u t c i p r e d r o c e r t e n t c e l e S g n i d n u o s n w o d r o n w o d p u Y A L P S I D T S I H e l p m a S D B T S T R P g n i l p m a s r o f w o b s p i h s m o r f e l g n a s t e S y a l p s i d D B T S T R P n i...

Page 86: ...e h t d n a u n e m b u s E V R U C y e k U N E M 4 o n s r o l o c t a d e g n a h c e b n a c e v r u c r o l o C 2 w o r r a n w o d r o p u s s e r P 5 1 d n a 3 1 1 1 8 o t t n a w u o y o n r o l o c n o r o s r u c t e s o t s y e k e v r u c e g n a h c e g n a h c o t s y e k w o r r a t f e l r o t h g i r e h t s s e r P 3 e u l a v r o l o c e t a n i m r e t o t y e k U N E M e h t s ...

Page 87: ... l o c e h t g n i g n a h c e r a u o y y a l p s i d o t y e k P L E H e h t s s e r p u n e m s r o l o c r i e h t g n i g n a h c r o f s e n i l e d i u g o t s y e k w o r r a n w o d r o p u e h t s s e r P 3 n a c u o Y 0 0 1 d n a 0 n e e w t e b e u l a v e g n a h c r e t s a f t e g o t s y e k e h t n w o d d l o h d n a s s e r p e g n a h c r e h t o e g n a h c o t 3 d n a 2 s p e...

Page 88: ...t o h c a e n e e w t e b s e c n a t s i d r i e h t h t g n e L t e N o t 0 0 5 s i e g n a r g n i t t e s e h T h t g n e l t e n s t e S s p e t s r e t e m 0 0 1 n i s r e t e m 0 0 0 3 h t g n e L e r i W t e n d n a p i h s n w o n e e w t e b h t g n e l e r i w s t e S 0 0 1 n i s r e t e m 0 0 0 1 o t 0 0 1 s i e g n a r g n i t t e s e h T s p e t s r e t e m h t d i W t e N 0 0 1 o t ...

Page 89: ... e r h t p e d f o t i n u s e s o o h C t o o h S r o f t s i D r o f t u o d a e r n u r e c n a t s i d f o t i n u s e s o o h C i s s a p r o s m o h t a f t e e f s r e t e m t e n g n i t o o h s e r u t a r e p m e T t u o d a e r e r u t a r e p m e t r e t a w f o t i n u s e s o o h C t i e h n e r h a f r o e d a r g i t n e c e g a u g n a L h s i l g n E u n e m n i d e s u e g a u g...

Page 90: ...e s t c e l e S r e d r o c e r t e n r o r e d n u o s o h c e e g n a R c e R t e N r e t t i m s n a r t r e d r o c e r t e n f o e g n a r g n i d n u o s s t e S t i n u S T L U A F E D s t l u a f e D s g n i t t e s t l u a f e d s e r o t s e R s l l a c e R m a r g o r P e s u e r u t u f r o f d e v r e s e R S R E H T O Y E K T N E V E o t s n o i t c n u f y e k T N E V E e h T T N E ...

Page 91: ...Current Flow Dir Hist Window Dsp Fish Histogram Save Method Register Save Save List Save Delete Initialize ON OFF ON OFF ON OFF Depth Temp OFF ON OFF Current Sonde ON OFF ON OFF ON OFF ON OFF ON OFF ON OFF ON OFF ON OFF ON OFF ON OFF ON OFF Audio H Slice ON OFF ON OFF ON OFF From To Whole Est MK QK Save Execute Execute Execute Execute Execute Execute Execute CURRENT VEC HIST DSP GRPH SAVE PICTURE ...

Page 92: ...te CHANGE COLOR DATA SET MENU Sonar 1 Sonar 2 Echo Sounder Marks Menu Execute Execute NET SHOOT PLAN Net Diameter Tilt Interlock COLOR CURVE Sonar 1 Sonar 2 Echo Sounder 1 Echo Sounder 2 Net Width Execute Qty plus distances Setting range 0 200 m NET SONDE Net Sonde XMTR Net Length Wire Length NET PLOT CORR Layer 1 Layer 2 Layer 3 Setting range 0 100 ...

Page 93: ...gle Continuous Panel Color Setting range 0 10 m ES Net Rec Left Right Setting range 80 640 m ES NET REC ES Audio Scale ES Draft Adjust ES 2 Select Net Rec Range Execute Execute DEFAULTS Defaults Program Recall 2400 4800 bps BAUD RATE I F CS 120 Aux Port 1 Aux Port 2 Aux Port 3 2400 4800 bps 2400 4800 bps 2400 4800 bps Meter UNIT LANGUAGE Depth Dist for Shoot Water Temp Language Mile Meter Feet C F...

Page 94: ...1 to 15 kt Setting range 1 to 10 TGT Mark Fish Auto Setting range 1 to 10 m TARGET LOCK Tracking Method Fish Speed Limit Tracking Factor Fish Track Window S L S L S L S L Fish Mark Own Ship Pos MK S L S L MARK SIZE 1 Trackball Mark Target Lock Mark Event Mark Event Mark Ship s Track MK S L S L 5R 10R 20R 40R Range Rings MARK SIZE 2 Own Ship Mark Net Shoot Mark Estimate Mark Current Vector 32 x 32 ...

Page 95: ...ults HIST DISPLAY PRT STBD Sample Net Shoot Mark Target Lock ON OFF ON OFF ON OFF ON OFF ON OFF ON OFF INTERLOCK Tilt Range Event Mark Fish Mark SYSTEM MENU Continued from previous page Setting range 0 180 H Slice Width 1 2 3 4 ...

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Page 97: ... 0 5 0 0 5 0 0 0 8 0 8 2 1 8 6 0 0 1 0 1 0 0 6 0 0 6 0 0 6 9 0 9 4 1 1 8 0 2 1 2 1 0 0 8 0 0 8 0 0 8 2 1 0 2 9 1 8 0 1 5 1 5 1 0 0 0 1 0 0 0 1 0 0 0 6 1 0 4 3 2 4 3 1 0 2 0 2 0 0 2 1 0 0 2 1 0 0 2 9 1 0 7 7 2 1 6 1 5 2 5 2 0 0 6 1 0 0 6 1 0 0 6 5 2 0 2 6 3 4 1 2 0 3 0 3 0 0 0 2 0 0 0 2 0 0 0 2 3 0 8 4 4 8 6 2 0 4 0 4 NOTE 1 Transmission cycle is selectable in 10 steps 2 External keying pulse can b...

Page 98: ...mal plus echo sounder d Audio combination e Horizontal slice combination 4 Display Marks Own ship mark heading mark range rings range bearing mark trackball mark event mark net shooting mark fish mark estimate mark bearing scale north mark ship s track current mark net sonde mark target luck mark 5 Alphanumeric Data Sonar picture range tilt angle gain Trackball mark data slant range horizontal ran...

Page 99: ...m m 0 0 2 1 m m 0 0 8 e m i T g n i s i a R l e v a r t m m 0 0 8 r o f c e s 6 1 l e v a r t m m 0 0 2 1 r o f c e s 5 2 e m i T g n i r e w o L l e v a r t m m 0 0 8 r o f c e s 5 1 l e v a r t m m 0 0 2 1 r o f c e s 4 2 m e t s y S g n i v i r D l o r t n o c c i r t c e l e e t o m e R s p i h s e l b a w o l l A d e e p s n o i t a r e p o r e w o l e s i a r g n i r u d s b o n k 5 1 s b o ...

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Page 101: ... Main Panel 1 2 Marks and Data 4 1 Mark data on off 7 20 Memory Card 8 1 Memory Card Initialization 8 1 Menu Tree A 1 N Nav Data 4 6 Net Behavior 7 17 Net Location Mark 7 15 Net Sonde Data 4 6 Net Sonde Mark 8 4 Net Sonde Transmitter 7 16 Noise 9 4 Normal Display Mode 4 1 Normal Display Mode w text 4 2 North Mark 4 4 Noise Limiter NL 3 6 O Overvoltage Warning 10 1 P Port Starboard Display 7 18 Pul...

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