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3-3

Suppressing Seabed Tail

AGC (data setting window: SIGNAL, SIGNAL
PROCESS)

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 AGC works only
on seabed reflections. Do not set it too high; weak echoes may
be missed.

Pulselength (data setting window: TVG•TX, PL)

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 to shorten the pulselength. For search
of surface and midwater fish in which seabed reflections are not
so strong, use the longest pulselength “9”.

2AGC (data setting window: SIGNAL, SIGNAL
PROCESS)

While it is ideal to suppress seabed echoes with the AGC con-
trol alone there are some fishing grounds where this is not pos-
sible. (The high power sonar has the advantage of long-range
detection but this can also be a disadvantage, since weaker ech-
oes may be hidden in strong, unwanted echoes such as the sea-
bed.)

If you cannot suppress seabed echoes or sea surface reflections
by the AGC control alone, use the 2AGC control. Normally a
setting of 2 or 3 is suitable. For especially strong echoes, use a
setting of 4 or 5.

AR, -4 to -1: Adjusts horizontal beamwidth.

2AGC function is fixed at “3”.

0:

2AGC function is off.

1 to 5:

Larger the number, the greater the effect of
2AGC.

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Содержание CSH-23F

Страница 1: ...COLOR SCANNING SONAR MODEL CSH 23F 24F ...

Страница 2: ...4200 FIRST EDITION FIRST EDITION NOV NOV 1997 1997 Printed in Japan Printed in Japan All rights reserved All rights reserved F F APR APR 05 2002 05 2002 PUB No PUB No OME 13050 OME 13050 00080818600 00080818600 00080818600 00080818600 DAMI DAMI CSH 23F 24F CSH 23F 24F 0 0 0 8 0 8 1 8 6 0 0 0 0 0 8 0 8 1 8 6 0 0 OME13050F00 OME13050F00 OME13050F00 OME13050F00 O M E 1 3 0 5 0 F 0 0 O M E 1 3 0 5 0 F...

Страница 3: ...if the equipment is emitting smoke or fire Continued use of the equipment can cause fire or electrical shock Contact a FURUNO agent for service Make sure no rain or water splash leaks into the equipment Fire or electrical shock can result if water leaks in the equipment Do not open the equipment Hazardous voltage which can cause electrical shock exists inside the equipment Only qualified personnel...

Страница 4: ...nsducer or water leakage inside the ship Do not use the equipment for other than its intended purpose Use of the equipment as a stepping stool for example may result in personal injury or equipment damage Replace the monitor when the picture becomes difficult to see The average life of the monitor is about 10 years Replace it when the picture be comes difficult to see to protect vision A warning l...

Страница 5: ...de 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 Adjusting Beamwidth 3 6 MARKS AND DATA Marks Data and Display Mode...

Страница 6: ...Display 7 14 Plotting Net Location Mark 7 15 Observing Net Behavior 7 16 Target Slice Display 7 17 VERTICAL SCANNING DISPLAY Using Vertical Scanning Display 8 1 Application to Bonito and Tuna Fishing 8 2 PORT STARBOARD HORIZONTAL SLICE DISPLAYS Port Starboard Display 9 1 Horizontal Slice Display 9 2 MEMORY CARD OPERATIONS Initializing Memory Cards 10 1 Saving the Picture 10 2 Transferring Echo Dat...

Страница 7: ...u 14 1 Self Test Description 14 2 Interface Unit CS 120A Self Test 14 5 INPUT DATA SELECTION Selection of Data at Interface Unit CS 120A 15 1 Setting Distances Between Net Sonde Transmitters 15 2 MAINTENANCE Display Unit Maintenance 16 1 Hull Unit Maintenance 16 2 MENU TREE A 1 SPECIFICATIONS SP 1 INDEX IN 1 ...

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Страница 9: ...considering and purchasing FURUNO equipment Features The CSH 23F 24F is a full circle multibeam electronic color scanning sonar which detects and displays fish schools on a 15 21 inch non glare high resolution color CRT The main features of the CSH 23F 24F are Vivid 16 color color echo strength dependent display for improved recognition of sea bed fish school concentration distribution and volume ...

Страница 10: ...JOINT BOX CS 170 TRANSMITTER UNIT CSH 310 RECEIVER UNIT CSH 220A SHIP S MAINS 100 VAC 1φ 50 60 Hz CSH 21080 800 mm stroke CSH 21120 1200 mm stroke CSH 21160 1600 mm stroke 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 POWER SUPPLY UNIT CSH 380B SHIP S MAINS 100 110 2...

Страница 11: ...H TILT SCAN DEPTH DIM CONT BRILL AUDIO NET COURSE TARGET LOCK EVENT1 EVENT2 ESTI MATE1 ESTI MATE2 FISH OFF CENT MAIN PANEL SUB PANEL 1 PUSH OPEN VERT SCAN 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 VERT SCAN TILT TRAIN SCANDEPTH REMOTE CONTROL BOX Figure 1 1 Display unit and remote control box ...

Страница 12: ...T m e 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 ...

Страница 13: ...elect target with trackball and then press the R B key A line connects between own ship mark and trackball mark to show bearing to target 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 lamp above the key lights when automatic tilt is on WIDTH Sets tilt width...

Страница 14: ... control to the sonar picture When in a sub menu it returns control 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 pres...

Страница 15: ...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...

Страница 16: ... e r w o l g r e t f a e h t r e g n o l 0 S E 1 S E t e N r e d r o c e R E G N A R G N R N D 6 1 s o P o h c e f o e g n a r h t p e d s t e S f o e g n a r s t e S e r u t c i p r e d n u o s d r a w n w o d r e d r o c e r t e n g n i d n u o s m 0 6 1 N I A G 0 1 0 y t i v i t i s n e s e v i e c e r s t s u j d A 5 T F I H S G N R P U 0 m 0 0 0 1 o h c e f o h t p e d t r a t s y a l p s i d...

Страница 17: ...D I W 0 1 2 6 1 4 0 2 6 W O R R A N 4 1 6 2 8 3 2 0 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 ...

Страница 18: ...shooting mark Saves picture to memory card Present a four or five angle view of echo inside estimate mark Light switch to start Varies the tilt angle of the sounding beam between 5 and 60 Automatically tillts sounding beam in 2 steps within tilt angle selected by the WIDTH key Not used Not used Adjusts receiver sensitivity Selects display range Press to enter mark shown on key or shift screen cent...

Страница 19: ...nel Lowering the Transducer Press d or d switch The lamp above the switch blinks during lowering of the trans ducer and lights when the transducer is completely lowered In normal use fully lower the transducer The transducer ex tends 1200 mm below the ship s hull pro viding stable and cavitation free soundings If the transducer may become entangled in the net after shooting the net for example par...

Страница 20: ...ow 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 can be ...

Страница 21: ...tion at the top right corner on the screen The tilt angle can be set in one degree steps from 5 upward to 60 downward degrees Finding a proper tilt angle is important when searching for fish 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 angl...

Страница 22: ...bed Case 1 Case 2 Case 3 Fish school a b Case 3 Case 1 Case 2 Fish school a Fish school a Seabed 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 however ...

Страница 23: ...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 24: ...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 25: ... 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...

Страница 26: ...2 8 ...

Страница 27: ... 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 23F 24F 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 below The higher the TVG setting the...

Страница 28: ... If the color suddenly changes to weaker colors as the fish enters MEDIUM and NEAR ar eas the TVG is improperly set Adjust the TVG If this again produces sea surface reflections and noise try to remove 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 30 log setting is normal The 25 log setting is us...

Страница 29: ...ul 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 9 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 30: ...ure 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 Reduce OUTPUT 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 sona...

Страница 31: ...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 32: ...background color Normally a setting of 3 or 4 is suffi cient Adjusting Beamwidth Beamwidth can be adjusted at SONR BEAM BEAM 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 Note...

Страница 33: ...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 34: ...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 combination display mode Normal display mode w text Echo sounder combination display ...

Страница 35: ...s 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 lever and the lower indication the instantaneous tilt angle at which the sonar actually works Trackball Mark Data B Trackball mark data Slant range Horizontal range Depth B Bearing Bearing is shown in 360 or 180 indication system relative...

Страница 36: ...tion 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 ...

Страница 37: ...movement from the fish speed mark to the latest fish mark 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 appear...

Страница 38: ...rrent 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 normalmode with text speed direction and depth of the current are shown for three layers C1 C2 C3 In the echo sounder combination and history modes only the speed appears C1 C2 C3 on the echo sounder combination or history...

Страница 39: ...n mode 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 ...

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Страница 41: ...d ON together Press 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 CURRE...

Страница 42: ...indow 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 scre...

Страница 43: ... s k r a m e s o h t s n r u T e r a h c i h w a t a d e d n o s t e n r o a t a d t n e r r u c l a d i t e l i h w y a l p s i d n o i t a n i b m o c S E e h t n o d e y a l p s i d t e n e h t g n i t o o h s 1 P S D K R A M g n i r a e B e g n a R k r a M g n i d a e H s g n i R e g n a R e l a c S g n i r a e B h t d i W n a c S o t u A f f o g n i n r u t t a h t e t o N f f o n o s k r a m...

Страница 44: ...k r a m e s o h t s n r u T m o r F r o o T 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 ...

Страница 45: ... 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 g n i t t e s d r a d n a t S g o l 0 3 n i g n i h c r a e s e c n a t s i d g n o l r o f t c e l e S g o l 5 3 y c n e u q e r f g n i d n u o s w o l n i a g e g n a r g n o l n e h w g n i t t e s s i h t e s U g o l 0 4 d e r i u q e r s i g o l 5...

Страница 46: ...p s i 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 g n i r a e b 0 8 1 g n i r a e b e 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 ...

Страница 47: ...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 s 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 s 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 w e ...

Страница 48: ...C n o e g n a h c 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 y e k e v r u c e g n a h c e g n a h c o t 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 ...

Страница 49: ...g n 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 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 y e k e h t n w o d d ...

Страница 50: ...d n 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 s t e S 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 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 ...

Страница 51: ... 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 n a...

Страница 52: ... 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 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...

Страница 53: ...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 54: ...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 55: ...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 57: ...r e v e 0 0 2 0 5 1 s n o i s s i m s n a r 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 ...

Страница 58: ... 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 59: ... 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 60: ... 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 61: ...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 62: ...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 63: ...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 64: ...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 65: ...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 66: ...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 67: ... 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 68: ...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 69: ...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 70: ...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 71: ...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 72: ...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 73: ...h c e f o y a l p s i d h p a r g r a B r o f n o i t u b i r t s i d l e v e l l a n g i s k r a m e t a m i t s e e d i s n i s e o h c e h s i f g n i t a m i t s e r o f l u f e s u e b o t d e t c e p x E y a m s c i t s i r e t c a r a h c h p a r g r a b e c n i s s e i c e p s s e i c e p s h s i f h t i w t n e r e f f i d e b 3 t a k r a m e t a m i t s e e d i s n i s e o h c E h t p e ...

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Страница 75: ... ing that the vertical scanning function is ON 2 Press theTILT SCAN lever to set a scan ning depth Your selection appears at the upper right hand corner of the display like D120M Select a scanning depth which does not display the seabed so you won t hide any echoes in the seabed When the seabed is hard and rocky it may appear even if may appear even if the scanning depth is set shallower than the ...

Страница 76: ...a formidable task considering their high speed and penchant for leaping and diving The CSH 23F 24F however with its wide vertical scanning beam makes this task easier Searching Neither the naked eye nor binoculars can continually track fish schools which make lightning quick runs between the surface and midwater A sonar however provides a continuous view of several hundred meters of sea area aroun...

Страница 77: ...underwater conditions so you can always know where a fish school is For tracking the schools which leap and dive often the vertical scanning mode is especially effective Figure 8 4 Tracking Approaching The sonar lets you view fish school movement continuously thus you can approach a school confident of a good catch While a flock of birds hovering over the sea surface is usu ally a good indication ...

Страница 78: ...8 4 Catching While the sonar operator monitors the sonar for other fish schools the crew can scatter bait and water to attract fish to the boat Figure 8 6 Catching ...

Страница 79: ... 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 23F 24F 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 18...

Страница 80: ...ark 120 Fixed Latest Picture D Figure 9 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 81: ...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 bytes of data This is equivalent to about two picture screens or about 20 pictures of echoes in side the estimate mark The following data are automatically saved as system data when the memory card is initialized panel setting function key setti...

Страница 82: ...key to display the USER menu 2 Select SAVE PICTURE 3 Select item to save Whole Saves whole picture to memory card Est MK Saves echo inside the estimate mark to internal memory About 20 pictures can be saved QK Save Saves whole screen to the internal memory One picture can be saved 4 Press the END key to close the USER menu 5 Press the MEMO key on the main panel It takes about two minutes to save a...

Страница 83: ...to 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 valu...

Страница 84: ... 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 Sele...

Страница 85: ...elected 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 through 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 MARK DSP 1 DATA DISPLAY User Menu Display Item Ship s Track Net Movement Plot ...

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Страница 87: ...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 88: ...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 89: ... 15 Figure 12 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 90: ...sidelobe appears at a certain tilt angle when the sidelobe points vertically Figure 12 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 ...

Страница 91: ...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 92: ...13 2 Reset Button Main Shaft Hull Unit Hand Crank Raise Lower Control Box Breaker Figure 13 1 How to manually raise the transducer ...

Страница 93: ...iceable parts inside Refer any repair work to a qualified technician WARNING 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 dc keys and press MENU key Single Continuous Panel Execute Execute Execute Color Gray SIO Execute Execute Execute Figure 14 1 SELF test menu 3 Press up...

Страница 94: ... OK RAM OK 105 0382 1xx ROM OK RAM OK 105 0353 1xx ROM OK RAM OK 105 0352 1xx ROM OK RAM OK 105 0415 1xx ROM OK RAM OK 105 0351 1xx 105 0576 1xx 105 0381 1xx RX1 1X1 RX2 1X2 105 0226 1xx ROM OK RAM OK ROM OK RAM OK ROM OK RAM OK ROM OK RAM OK Note Above program numbers are for CSH 23F Figure 14 2 Single test Figure 14 3 Continuous test CONTI TEST DCON DRAW DUAL ES SLICE PSIO PIF ROM RAM DROM DPRAM...

Страница 95: ...To escape from the test reset the power 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 14 5 Color test PANEL TEST X Y Figure 14 4 ...

Страница 96: ...power 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 GRAY TEST Q Q Figure 14 7 SIO test Figure 14 6 Gray test SIO TEST DRAW IF PISO PIF SIO SIO SIO1 SIO2 SIO1 OK OK OK OK OK ...

Страница 97: ...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 14 8 Interface unit CS 120A cover opened ...

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Страница 99: ...kts set the GPS format 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 curr...

Страница 100: ...en transmitters 2 and 3 in meters Figure 15 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 Sett...

Страница 101: ...t 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 they can remove paint and ma...

Страница 102: ... Mod Red N anti foulant 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 ...

Страница 103: ... Current Sonde ON OFF ON OFF ON OFF ON OFF ON OFF Execute Execute Execute Execute Execute Execute Execute MARK DSP 1 FUNCTION KEY CARD NET DATA CARD ECHO DAT CARD UTILITY DATA DISPLAY USER MENU Ship s Track Net Movement Plot Fish MK Connect Fish Tracking MK Fish Track Plot Current Flow Dir Hist Window Dsp Fish Histogram Save Method ON OFF ON OFF ON OFF ON OFF ON OFF Audio PRT STBD H Slice ON OFF O...

Страница 104: ...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 105: ...el 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 Dist for Shoot Water Temp Language Mile Meter Feet C F...

Страница 106: ...Large Largest Setting range 1 to 10 Setting range 1 to 15 kts TGT Mark Fish Auto Setting range 1 to 10 m TARGET LOCK Tracking Method Track Echo Color Fish Speed Limit 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 Estimate Mark Cur...

Страница 107: ...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 3 4 Setting range 0 180 ...

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Страница 109: ... 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 0 0 0 3 0 0 0 3 0 0 0 8 4 0 9 6 6 0 0 4 0 5 7 5 0 0 0 4 0 0 0 4 0 0 0 4 6 0 6 8 8 0 3 5 0 5 6 7 0 0 0 5 0 0 0 5 0 0 0 0 8 0 8 8 0 1 8 6 6 0 5 6 7 NOTE 1 Transmission c...

Страница 110: ... center c Echo sounder combination normal plus echo sounder d Audio combination e Port starboard combination f Horizontal slice combination g Target slice h True motion 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 lock mark 5 Alph...

Страница 111: ...age warning unretracted transducer warning remote control External sensor required 3 HULL UNIT l e v a r T m m 0 0 2 1 l e v a r T m m 0 0 6 1 l e v a r T R C D X m m 0 0 2 1 m m 0 0 8 m m 0 0 2 1 m m 0 0 6 1 e m i T g n i s i a R l e v a r t m m 0 0 2 1 r o f c e s 2 2 l e v a r t m m 0 0 6 1 r o f c e s 8 2 e m i T g n i r e w o L l e v a r t m m 0 0 2 1 r o f c e s 0 2 l e v a r t m m 0 0 6 1 r...

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Страница 113: ...rd Initialization 10 1 Menu Tree A 1 N Nav Data 4 6 Net Behavior 7 16 Net Location Mark 7 15 Net Shooting Mark 10 4 Net Sonde Data 4 6 Net Sonde Mark 10 4 Net Sonde Transmitter 15 2 Noise 12 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 13 1 P Port starboard Display 9 1 Pulselength 3 3 R RANGE and Bearing 2 7 Range Ring 4 5 Rejec...

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