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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.

Fish echo

Fish echo
weakened

Fish echo

WRONG
METHOD

CORRECT
METHOD

OUTPUT decreased
with GAIN kept
constant

TVG and AGC
adjusted with
OUTPUT kept high

Figure 3-2 How to suppress seabed and sea surface
reflections in shallow waters

Rejecting Sonar Interference and Noise

While observing the sonar picture, you may encounter occa-
sional 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:

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Содержание CSH-53

Страница 1: ...COLOR SCANNING SONAR MODEL CSH 53 Back ...

Страница 2: ...8 65 2111 Fax Fax 0798 65 4200 0798 65 4200 FIRST EDITION FIRST EDITION JUL JUL 1997 1997 Printed in Japan Printed in Japan All rights reserved All rights reserved E E MAR MAR 03 2005 03 2005 Pub No Pub No OME 13070 OME 13070 00080807301 00080807301 00080807301 00080807301 DAMI DAMI CSH 53 CSH 53 0 0 0 8 0 8 0 7 3 0 1 0 0 0 8 0 8 0 7 3 0 1 OME13070E00 OME13070E00 OME13070E00 OME13070E00 O M E 1 3 ...

Страница 3: ...sult 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 chair 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...

Страница 4: ...g a Display Mode 2 2 Selecting a Display Range 2 3 Setting the Tilt Angle 2 3 Adjusting the Gain 2 7 Measuring Range and Bearing to a Target 2 7 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 MARKS AND DATA Marks Data and Display Mode 4 1 Perma...

Страница 5: ... 7 11 The Event Mark 7 12 True Motion Display 7 14 Plotting Net Location Mark 7 15 Observing Net Behavior 7 16 Reducing Sea Surface Reflections 7 17 Boosting Tx Power 7 17 PORT STARBOARD HORIZONTAL SLICE DISPLAYS Port Starboard display 8 1 Horizontal slice display 8 2 SAVING REPLAYING PICTURE Initializing Memory Cards 9 1 Saving the Picture 9 2 Transferring Echo Data from Internal Memory to Memory...

Страница 6: ...iption 13 2 Interface Unit CS 120A Self Test 13 5 INPUT DATA SELECTION Selection of Data at Interface Unit CS 120A 14 1 Setting Distances Between Net Sonde Transmitters 14 2 MAINTENANCE Display Unit Maintenance 15 1 Hull Unit Maintenance 15 2 Replacement of Fuse Memory Card Battery 15 3 MENU TREE A 1 SPECIFICATIONS SP 1 INDEX IN 1 ...

Страница 7: ...oses Thank you for considering and purchasing FURUNO equipment Features The FURUNO CSH 53 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 15 non glare high resolution CRT screen Also the CSH 53 has two types of models a model with display unit and a model with processor uni...

Страница 8: ... 120A VI 1100A FNZ JOINT BOX CS 170 TRANSMITTER UNIT CSH 551 SHIP S MAINS 100 VAC 1φ 50 60 Hz 110 115 220 230 VAC 1φ 50 60 Hz SPEED LOG NAVIGATOR CURRENT INDICATOR COLOR VIDEO SOUNDER AD CONVERTER ECHO SOUNDER COLOR VIDEO SOUNDER NET SONDE SHIP S MAINS 100 VAC 1φ 50 60 Hz or PROCESSOR UNIT CSH 535 INTERFACE UNIT HULL UNIT w RECEIVER UNIT CSH 552 CSH 5508 800 mm stroke CSH 5512 1200 mm stroke ...

Страница 9: ...MATE 1 NETCOURSE FISH OFF CENT TX 1 2 3 4 FUNCTION 5 RANGE GAIN SHOOT MEMO RECALL AUTO AUTO BOOST TILT TRAIN SCANDEPTH NARROW Selects which display unit to control in multiple display unit installation Raises lowers the transducer Raises transducer Mid protrusion Full protrusion Press to enter mark shown on key or shift screen center Selects display range Adjusts receiver sensivity Not used Each p...

Страница 10: ... t s y 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...

Страница 11: ...s external sensor R B Provides range and bearing data from own ship to a target Select target with trackball and then press the R B key A line connects between own ship mark and trackball mark to measure bearing TILT Changes the tilt angle of the sounding beam between 5 and 60 AUTO TILT Automatically tilts the sounding beam up and down in 2 steps within the tilt angle selected by the WIDTH key The...

Страница 12: ...eturns 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 replay and press ...

Страница 13: ...nd TX TVG Q TX Figure 1 4 Sub panel 2 Note The sub panel 2 for the processor unit is arranged vertically Sub panel 2 control description Item Main Item Main Sub Setting Range Description Normal Setting NEAR 0 9 Adjusts receiver gain within 100 m 5 MEDIUM 0 9 Adjusts receiver gain between 100 m and 400 m 5 TVG FAR 0 9 Adjusts receiver gain beyond 400 m 5 CYCLE 0 9 Sets Tx cycle 9 is normal setting ...

Страница 14: ...r the setting the longer the afterglow remains 0 ES ES1 Net 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 wa...

Страница 15: ... e s l a m r o n e h t s i 2 2 1 O T U A N A C S F F O N O F F O N O L B E g n i n n a c s f f o n o s n r u 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 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...

Страница 16: ...ays net shooting mark Saves picture to memory card Sharpens width of Tx beam Replays a stored picture Varies the tilt angle of the sounding beam between 5 and 60 Automatically tillts sounding beam in 2 steps within tilt angle selected by WIDTH key Changes weight in vertical direction at Tx Not used Adjusts receiver sensivity Selects display range Press to enter mark shown on key or shift screen ce...

Страница 17: ...s are on the lower part of the main panel Lowering the Transducer Press d or d switch 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 trans ducer 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...

Страница 18: ...t 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 can be conn...

Страница 19: ...right corner on the screen The tilt angle can be set in one degree steps from 5 upward to 60 downward Finding a proper tilt angle is important when searching for fish Below are tips for selecting tilt angle 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 degree...

Страница 20: ...se 1 Case 2 Case 3 Fish school a Seabed Fish school b Case 3 Case 1 Case 2 Fish school a Fish school a Seabed Seabed Figure 2 1 Fish echo and tilt angle Points to consider Normally a vertically distributed fish school is a better sonar target than the seabed because it reflects the transmitted pulse back toward the transducer In case 3 both fish schools a and b are presented Gener ally speaking ho...

Страница 21: ...d displayed on the screen as sea surface reflec tions When the sea is calm since the sound is reflected just like a light 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 se...

Страница 22: ...er to it to find out the suitable tilt angle for a given depth detection range 100 200 200 400 300 600 400 800 Range m 0 5 10 15 20 40 40 80 60 120 80 160 100 200 200 400 Vertical width of sonar beam 15 26 m 100 m 100 m 300 m 78 m 200 m Depth m 52 m Tilt angle and beam coverage Figure 2 3 Tilt angle and beam coverage ...

Страница 23: ... the control somewhere between positions 3 and 7 Gain low Gain proper Gain high Figure 2 4 Gain settings and resulting picture 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 5 Location of range and bearing indicatio...

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Страница 25: ...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 53 has three TVG functions NEAR MEDIUM and FAR and they mainly compensate for propagation loss on short middle and long ranges respectively centered at the ranges shown be...

Страница 26: ...yed in the same color as it approaches If the color suddenly changes to weaker colors as the fish enters MEDIUM and NEAR areas the TVG is improperly set Adjust the TVG If this again produces sea surface reflections and noise try to re move them with AGC and NL controls Note If the above procedure does not produce satisfactory re sults the TVG curve can be changed on the SYSTEM menu The 15 log sett...

Страница 27: ...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...

Страница 28: ...e becomes clearer when output power is reduced rather than when the GAIN is decreased as illustrated below Fish echo Fish echo weakened Fish echo WRONG METHOD CORRECT METHOD OUTPUT decreased with GAIN kept constant TVG and AGC adjusted with OUTPUT kept high Figure 3 2 How to suppress seabed and sea surface reflections in shallow waters Rejecting Sonar Interference and Noise While observing the son...

Страница 29: ...ise is just eliminated Do not use an unnecessarily high setting since it may also reject small wanted echoes Changing Tx cycle data setting window TVG 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 CYCLE on the data setting win...

Страница 30: ... 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 reflections raising the setting causes them to become bluish to background color Normally a setting of 3 or 4 is suffi cient ...

Страница 31: ...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 ...

Страница 32: ...data appearing in the normal display mode w text Figure 4 3 Marks and data appearing in the echo sounder display mode Normal display mode w text Echo sounder combination display Requires external sensor Requires external sensor ...

Страница 33: ...case B is indicated as follows on the port side on the starboard side The tilt angle appears below the range The tilt angle can be changed in 1 steps within the range of 5 to 60 In target lock and automatic tilt control the instantaneous tilt angle appears in parentheses Accordingly both are equal when target lock is on In automatic tilt the upper indication shows the tilt angle set by the TILT le...

Страница 34: ...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 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 angle When ...

Страница 35: ... 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 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 follows the movement of the target lock mark This data appears when the bea...

Страница 36: ...o 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 display Net Sonde ...

Страница 37: ...ode automatically 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 ech...

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Страница 39: ...s and hold down until the buzzer sounds All LEDs light while keys are held down 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 Press END key to close menu CARD UTILITY DATA DISPLAY CURRENT VEC CARD ECHO D...

Страница 40: ...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 op tion 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 Men...

Страница 41: ...dow ES Window Turns those marks on off ES Window selects display 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 MARK DSP 2 Ship s Track Net Movement...

Страница 42: ... 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 y r o m e m o t n e e r c s e l o h w d r a c y r o m e m d r a c 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...

Страница 43: ...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 g n i t t e s d r a d n a t S g o l 0 3 e l b a l i a v a o s l a g n i t t e s g o l 0 4 d n a g o l 5 3 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 u r 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 y a l p s i d m o r f R 6 1 d n a R 3 1 b u s n e p o n o ...

Страница 44: ...D 0 6 3 g n i r a e b s s a p m o c 2 3 n i r e k r a m e u r t 0 8 1 g n i r a e b 0 6 3 r o g n i r a e b e v i t a l e r e v i t a l e r g n i r a e b 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 ...

Страница 45: ...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 h t d i W e c i l S H r e p p u g n o l a s e o h c e g n i l p m a s r o f h t d i w t c e l e S e c i l s l a t n o z i r o h n i r e k r a m e g n a r f o f l a h e h t r e d i ...

Страница 46: ... o t m e t i t c e l e s t s r i F l e h t s s e r p n 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...

Страница 47: ... a h c o t t n a w u o y t n e m g e s r o l o c e h t r o s k r a m f o r o 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...

Страница 48: ...a s r e t t i m s n a r t e d n o s t e n f o r e b m u n r e t n E r e h 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 r e t n E 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 r e t n E 0 0 1 n i s r e t e m 0 0 0 1 o t 0 0 1 s ...

Страница 49: ...i m s n a r t e z i n o r h c n y s o t G A U G N A L T I N U E h t p e D t u o d a e r h t p e d f o t i n u 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 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 e s o o h C t i e h n e r h a f r o e ...

Страница 50: ...N S E e l a c S o i d u A S E f o e d i s t f e l r o t h g i r n o e l a c s h t p e d s y a l p s i D y a l p s i d r e d n u o s o h c e t s u j d A t f a r D S E o h c e n o h t p e d e u r t d a e r o t t f a r d s p i h s s t e S y a l p s i d r e d n u o s t c e l e S 2 S E t r o p 2 S E o t d e t c e n n o c t n e m p i u q 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 ...

Страница 51: ...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 ...

Страница 52: ...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...

Страница 53: ...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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Страница 55: ...t 4 y r e v e 0 0 4 0 0 3 s n o i s s i m s n a r t 2 y r e v e 0 0 6 0 0 5 8 0 0 8 6 2 1 6 1 0 0 0 1 4 8 2 1 0 0 2 1 n a h t e r o m 2 4 6 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 How to fin...

Страница 56: ... 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...

Страница 57: ... 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...

Страница 58: ... 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 ...

Страница 59: ...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 ...

Страница 60: ...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...

Страница 61: ...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...

Страница 62: ...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...

Страница 63: ...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 ...

Страница 64: ...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...

Страница 65: ... 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...

Страница 66: ...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...

Страница 67: ...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 ...

Страница 68: ...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...

Страница 69: ...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...

Страница 70: ...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...

Страница 71: ...or example searching small fish Note that it is also useful to increase the setting when observing bottom condi tions since the picture is more detailed Boosting Tx Power When the NARROW key is turned on sea surface reflections are suppressed but small fish echoes are also suppressed In this case the boost feature may be useful Press the BOOST key to light the lamp above it Tx power in creases and...

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Страница 73: ... 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 53 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 ...

Страница 74: ...ark 120 Fixed Latest Picture D Figure 8 2 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 in width and centered on the bearing mark appears on the display Echoes within the marker appear in the window at the bottom of the display scrolling leftward 2 Plac...

Страница 75: ... s e e d i s n i o h c E k r a m d n a y e k O M E M g n i t t e s u n e m y r o m e m l a n r e t n I a t a d g n i t o o 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 ini tialized formatted 1 Press the MENU key to display the user menu 2 Select the CARD UTILITY menu 3 Select Initialize It takes more than tw...

Страница 76: ...It takes about two minutes to save a whole screen to a memory card During this time 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 s...

Страница 77: ...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...

Страница 78: ...for replay of echo inside estimate 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 k...

Страница 79: ...d 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 on the USER menu w Current Vec 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 Tracki...

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Страница 81: ...e skipper can prevent net dam age A Flat seabed Tilt angle 10 to 15 B Flat seabed Tilt angle 20 or more C Sloping seabed Tilt angle 20 or more Seabed Shallow bottom is displayed in a strong color and with a short tail Seabed is displayed narrower and in stronger colors when compared to A Narrow tilt angle Only half of vertical beam width captures the seabed The deeper seabed echo is displayed in a...

Страница 82: ...urface fish Tilt angle 5 to 10 B Midwater bottom fish Tilt angle 30 or more Fish echo which appears before seabed can be detected Tilt angle 0 to 20 Fish echo which appears together with or after seabed can be detected Seabed Fish school Sea surface reflections Fish school Seabed echo not displayed because of narrow tilt angle Sea surface reflections are present Fish school Large midwater fish sch...

Страница 83: ... 15 Figure 11 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 beyond the wake Own ship Other ship Wake produced b...

Страница 84: ...elobe appears at a certain tilt angle when the sidelobe points vertically Figure 11 5 Sidelobe echoes Noise and Interference Interference from a sonar on board 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 bel...

Страница 85: ...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...

Страница 86: ...12 2 Reset Switch Breaker RAISE LOWER CONTROL BOX HULL UNIT TEST NORMAL switch h h Photo No 1744 Photo No 1479 Figure 12 1 Raise Lower Control Box of the Hull Unit ...

Страница 87: ...circuits Hazardous voltage which will cause death 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 2 Press arrow keys to select SELF TEST INIT SET MENU SELF TEST Select item with keys and press MENU key Single Continuous Panel Execute Execute Execute Color Gray SIO Execute Execute Execute Figure 13 1 Se...

Страница 88: ...OM OK RAM OK 105 0352 1xx ROM OK RAM OK 105 0415 1xx ROM OK RAM OK 105 0351 1xx 105 0445 1xx 105 0381 1xx RX1 1X1 RX2 1X2 105 0226 001 ROM OK RAM OK ROM OK RAM OK ROM OK RAM OK ROM OK RAM OK Figure 13 2 Single test Continuous test The devices of the display unit are checked continuously CONTI TEST DCON DRAW DUAL ES SLICE PSIO PIF ROM RAM DROM DPRAM P W EEPROM REACT ROM RAM VRAM DPRAM CLT ROM RAM D...

Страница 89: ...o escape from the test reset the power PANEL TEST X Y Figure 13 4 Panel test Color test This test checks for proper display color To escape from the test reset the power COLOR TEST Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q QQ Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q QQ Q Q Q Q Q QQ Q Q Q Q Q Q Q Q Q QQ QQ Q Q Q Q Q Q QQ Q Figure 13 5 C...

Страница 90: ...power GRAY TEST Q Q Figure 13 6 Gray test SIO test This test checks for proper communication between the display unit and transmitter 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 13 7 SIO test ...

Страница 91: ...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 13 8 Interface unit CS 120A cover opened ...

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Страница 93: ...kts set the GPS forrnat to DR Note however that the heading direction becomes erratic if the ship s speed is less than 0 2 kts Note 2 Use this setting when both DR and current indicator are available Normally DR data has highest priority and is switched to current indicator data if the DR data is absent for more than 61 seconds The heading data for the bearing scale is always provided from the cur...

Страница 94: ...transmitters 2 and 3 in meters Figure 14 2 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...

Страница 95: ...play 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 distort the picture An anti static spray may be used to clean the screen Do not use chemical based cleaners the...

Страница 96: ...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 15 2 Hull Unit Maintenance ...

Страница 97: ...holder Circuit board in display unit Circuit board in transmitter unit Turn screw on fuse holder Replace fuse If fuse blows again call for service Contact a FURUNO agent or dealer Contact a FUNURO agent or dealer FGAO 10A AC125V FGMA 1A 2A 3A AC125V FGBO A 2A AC125V F 7165 10A AC250V Processor Unit Fuse holder Turn screw on fuse holder Replace fuse If fuse blows again call for service FGBO A 5A AC...

Страница 98: ...s Data may be lost if the battery is not replaced within that period 1 Slide the release leftward with your thumbnail 2 Pull out the battery case then remove the battery 3 Insert new battery in case plus side up 4 Insert the battery case 5 Slide the release rightward to lock the battery case Release Plus side up Battery case How to replace the battery in the memory card ...

Страница 99: ...ent 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 PRT STBD H Slice ON OFF 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 S...

Страница 100: ...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 ...

Страница 101: ...ute Execute Execute SELF TEST Single 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 Feet Fathom Passi UNIT LANGUAGE Depth Dis...

Страница 102: ...ormal Large Largest Setting range 1 to 15 Setting range 1 to 10 TGT Mark Fish Setting range 1 to 10 TARGET LOCK Tracking Method Track Echo Color Tracking Factor Disable TGT Lock S L 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 1 Event Mark 2 Ship s Track MK S L S L 5R 10R 20R 40R Range Rings MARK SIZE 2 Own Ship Mark Net Shoot Mark Estima...

Страница 103: ...ults HIST DISPLAY H Slice Width 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 1 2 4 8 Setting range 0 180 ...

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Страница 105: ...0 8 0 8 2 1 8 6 0 9 9 0 v v 0 0 6 0 0 6 0 0 6 9 0 9 4 1 1 8 0 1 1 1 1 v v 0 0 8 0 0 8 0 0 8 2 1 0 2 9 1 8 0 1 5 1 5 1 v v 0 0 0 1 0 0 0 1 0 0 0 6 1 0 4 3 2 4 3 1 9 1 0 2 v v 0 0 2 1 0 0 2 1 0 0 2 9 1 0 7 7 2 1 6 1 9 1 0 2 v v 0 0 6 1 0 0 6 1 0 0 6 5 2 0 2 6 3 4 1 2 9 1 0 2 v v 0 0 0 2 0 0 0 2 0 0 0 2 3 0 8 4 4 8 6 2 9 1 0 2 v 0 0 0 3 0 0 0 3 0 0 0 8 4 0 9 6 6 0 0 4 0 2 7 5 NOTE 1 Transmission cycl...

Страница 106: ...al plus echo sounder e Audio combination f Port starboard combination g 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 5 Alphanumeric Data Sonar picture range tilt angle gain Trackball mark data slant range hor...

Страница 107: ...mm 800 mm 1200 mm Raising Time 16 sec 22 sec Lowering Time 15 sec 20 sec Driving System Remote electric control Allowable ship s speed 18 knots 15 knots during raise lower operation 4 POWER CONSUMPTION 100 VAC 50 60 Hz 1 Ø 500 VA on average 1 kVA max 110 115 120 200 210 220 230 240 VAC operation available with stepdown transformer PT 400 for display unit 5 ENVIRONMENTAL CONDITION 1 Temperature 0 C...

Страница 108: ...rd 9 1 Memory Card Initialization 9 1 Menu Tree A 1 N Nav Data 4 6 Net Behavior 7 16 Net Location Mark 7 15 Net Shooting Mark 9 4 Net Sonde Data 4 6 Net Sonde Mark 9 4 Net Sonde Transmitter 14 2 Noise 11 4 Noise Limiter NL 3 6 Normal Display Mode 4 1 Normal Display Mode w text 4 2 North Mark 4 4 O Overvoltage Warning 12 1 P Port starboard Display 8 1 Pulselength 3 3 R Range and Bearing 12 7 Range ...

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