Page 3 - iiiiiiiiiiiii; SAFETY INSTRUCTIONS; ELECTRICAL SHOCK HAZARD; Do not open the equipment.; WARNING; Keep heater away from equipment.
iiiiiiiiiiiii i SAFETY INSTRUCTIONS WARNING WARNING ELECTRICAL SHOCK HAZARD Do not open the equipment. Only qualified personnelshould work inside theequipment. Immediately turn off the power at theswitchboard if water leaks into theequipment or something is dropped inthe equipment. Continued use of ...
Page 4 - ii; CAUTION
ii CAUTION CAUTION Do not exceed 18 knots when operatingthe equipment and do not exceed 16knots when lowering or raising thetransducer. The transducer may become damaged. The zinc block attached near the transducer must be replaced yearly. The junction between the transducer andmain shaft may corrod...
Page 5 - iii; TABLE OF CONTENTS
iii TABLE OF CONTENTS 1. FOREWORD _________________________________________ 1 2. SYSTEM CONFIGURATION _____________________________ 2 3. CONTROLS _________________________________________ 3 Operating Controls ..............................................................................................
Page 6 - iv; CHARACTERISTICS OF THE ULTRASONIC WAVE IN
iv 9. WARNING __________________________________________ 30 Overvoltage Warning ..................................................................................................... 30Unretracted Transducer Warning ................................................................................... 3...
Page 8 - SYSTEM CONFIGURATION; System Configuration
Page 9 - Operating Controls
3 3. CONTROLS Operating Controls The CSH-5 MARK-2 provides intuitive operation. If you change acontrol setting you will see the associated reaction on the screen al-most immediately. All operations are carried out from the main paneland the control box. The front panel incorporates mainly controlswh...
Page 11 - Control Box Panel
5 Control Box Panel GAIN RANGE TRANSDUCER AUTO TILT SECTOR SCAN F1 EVENT R/B OFF- CENTER F2 EVENT DELETE MENU TX TILT - + - + TRANSDUCER retracts and lower the transducer. The lamp above the switch flickers while the transducer is moving and lights when stopped. TX turns on the transmitter, freeze t...
Page 13 - Menu Screen; il; Recalling Scan Menu; MENU; Changing Setting; RANGE
7 Menu Screen The CSH-5 MARK-2 employs four menu screens; menu-l, menu-2and system menu. Of the four menus, the menu-2 and system menucontain preset items which do not require setting alteration if they areonce set at installation. See page 32 for further details. The menu-lcontains items to be set ...
Page 14 - Turning Off Scan Menu; To turn off the scan menu, press the; List of Scan Menu Items; Contents of Scan Menu
8 Turning Off Scan Menu To turn off the scan menu, press the MENU key. Note: Settings for the items shown in red are locked. To unlock the settings, call up the system menu. See page 33. List of Scan Menu Items HUE : 1 2 3 4 TX OUTPUT : 8 PLUSELENGTH : 7 TX CYCLE : 10 TVG NEAR : 6 TVG FAR : 7 AUTO S...
Page 16 - General; Basic Operating Procedure; CONTROL SETTINGS; Turning the Power On/Off; Power On; Press the
10 4. BASIC OPERATION General This section provides information necessary for basic operation ofthe CSH-5 MARK-2, from turning the power on and off to detectingand tracking fish schools. The basic operating procedure is shownbelow. Basic Operating Procedure 2 / 7 Lower/raise transducer. Location for...
Page 17 - Power Off; Lowering the Transducer; Selecting a Display Range
11 Power Off Press the TRANSDUCER “ ” switch on the control box. Wait until the lamp above the switch lights, and then press the POWER “ OFF ” switch. Note that the transducer automatically retracts into the tankeven if the POWER “ OFF ” switch is pressed without raising the transducer (by pressing ...
Page 18 - Seabed Echo vs Tilt Angle
12 Seabed Echo vs Tilt Angle Case 1: Tilt Angle 30 to 40 degrees A wide tilt angle will display the entire seabed since it is captured bythe full width of the beam. Case 2: Tilt Angle 10 to 20 degrees A narrow tilt angle will display only half the seabed since it is cap-tured by only the lower half ...
Page 19 - Points to Consider; • In case 3, both fish schools; Tilt Angle for Surface Fish; Suitable Tilt Angle
13 Points to Consider • As a general rule of thumb, a vertically distributed fish school is a better sonar target than the seabed, since it reflects the transmittedpulse back toward to the source. • In case 3, both fish schools a and b are presented. Generally speaking, however, midwater fish school...
Page 20 - ilt angle vs. Beam Coverage; Depth; ertical Width of Sonar Beam
14 TIL T ANGLE T ilt angle vs. Beam Coverage 20 (40) 40 (80) 60 (120) 80 (160) 100 (200) 200 (400) Depth m 100 (200) 200 (400) 300 (600) 400 (800) Range m 0 ° 5 ° 10 ° 15 ° 13 ° 23m 100m 46m 200m 68m 300m V ertical Width of Sonar Beam
Page 21 - Adjusting the Gain
15 Adjusting the Gain The gain should be adjusted to see fish echoes clearly with minimalnoise on the screen. Too high a setting not only causes excessivenoise on the screen and makes it difficult to discriminate wanted fishechoes but also causes seabed echoes to be painted in strong colors,resultin...
Page 22 - FINE TUNING THE PICTURE; TVG Setting Procedure
16 5. FINE TUNING THE PICTURE General In the previous chapter basic operation of the sonar was presented.This chapter describes the procedures for fine tuning the sonar pic-ture. Eliminating Unwanted Feeble Echoes Echoes from targets such as seabed and fish return to the transducerin order of distan...
Page 23 - AGC Control
17 3. Locate a fish school on a long range setting which is approaching own ship. Note that the tilt should be kept adjusted so that the fishschool is always placed in the center of the sonar beam, i.e., sothat the fish school is displayed in strongest colors possible. Checkthat the fish echo is dis...
Page 24 - Rejecting Sonar Interference and Noise; Identifying Noise Source; switch on the control box and operate all on board
18 Suppressing Seabed and Sea Surface Reflections inShallow Fishing Grounds In shallow fishing grounds with hard or rocky bottom, seabed reflec-tions often interfere with wanted fish echoes and they can not beeliminated sufficiently with the aforementioned TVG and AGC con- trols, especially when the...
Page 25 - Rejecting Noise with IR Control; IR; Rejecting Noise with NOISE LIM Control; NOISE LIM; Rejecting Interference with TX Cycle; Selecting Horizontal Beamwidth; and different bearings.; Selecting Vertical Beamwidth
19 Rejecting Noise with IR Control This control is similar to the interference rejector on echo soundersand radars. It is effective for rejecting random noise and sea surfacereflections in rough sea conditions. Set the IR control to positions “1” thru “3” so that noise is just eliminated. Do not use...
Page 26 - ADVANCED OPERATION; To measure the range and bearing to a target, use the trackball.; Procedure; Operate the trackball to place the trackball mark “; Detecting Fish Schools Aurally
20 6. ADVANCED OPERATION General It this section, how to use the CSH-5 MARK-2 effectively in actualfishing operations is presented. Measuring Range and Bearing to a Target To measure the range and bearing to a target, use the trackball. Procedure 1. Operate the trackball to place the trackball mark ...
Page 27 - AUDIO; To cover a certain area, press the; SECTOR SCAN; Relocating Fish School for Easy Observation
21 Procedure 1. Move the trackball mark “ ” to the direction you want to moni- tor through the speaker, by operating the trackball. 2. Press the R/B key. The bearing marker will appear in the direction of the trackball mark and echoes in that direction are monitoredthrough the speaker. Adjust the vo...
Page 28 - Finding Fish School Center; Call up the scan menu, select the menu item “AUTO TLT WDTH”; Default setting; These keys are preset at factory for one key operation as follows
22 2. Press the OFF-CENTER key on the front panel. 3. To move the own ship mark back to the center of the screen, press the OFF-CENTER key again. Finding Fish School Center When you want to find the center depth of a fish school, use the autotilt function which automatically scans the tilt angle wit...
Page 29 - Registering Procedure; Recalling Procedure
23 Registering Procedure 1. Press the MENU key. 2. Rotate the RANGE control to select FUNC KEY PROG. 3. Rotate the GAIN control to select FUNC1 or FUNC2. 4. Press the TX key. Each time the TX key is pressed, the current settings in the scan menu and E/S menu are recorded. When FACTORY is selected, t...
Page 30 - Marks
24 7. MARK AND DATA This chapter describes the marks and data which appear on the dis-play screen. TRACKBALL MARK DATA Slant Range Horizontal Range Depth True Bearing TRACKBALL MARK HEADING MARK OWN SHIP MARK RANGETILTAUTO TILTGAIN BEARING MARKRANGE MARK RANGE RING BEARING OF BEARING MARK RANGE TO R...
Page 31 - Data
25 g n i R e g n a R n i e g n a r e h t f o 4 / 1 f o s l a v r e t n i t a d e t t o l p e r a s g n i r e g n a r e h T . s g n i r e g n a r o w t y r e v e d e d i v o r p o s l a e r a a t a d g n i r e g n a R . e s u e h t f o 2 / 1 o t 4 / 1 m o r f d e r e t l a e b n a c l a v r e t n i g...
Page 32 - INTERPRETING THE DISPLAY
26 8. INTERPRETING THE DISPLAY General This section provides information necessary for interpreting the display. Interpreting the Display Seabed When the tilt angle is changed, the seabed echo illustrated below willappear on the screen. When the tilt angle is decreased, the seabedtrace becomes wider...
Page 34 - Sea Surface Reflections; To reduce the sea surface reflections, set the tilt angle to 5; Wake
28 Sea Surface Reflections To reduce the sea surface reflections, set the tilt angle to 5 ° or more so that the upper edge of the sonar beam may not hit sea surface, oradjust TVG functions. When the sonar is used with a narrow tilt angle,the sea surface reflections cover large area (up to 300 m to 4...
Page 35 - False Echo by Sidelobe
29 False Echo by Sidelobe In the preceding chapters, it was explained that an ultrasonic wave isemitted only in the direction set by the TILT lever, but, in practice,there are some emissions outside the main beam that are called“sidelobes”. Energy of the sidelobe is fairly weak but when the sonaris ...
Page 36 - Overvoltage Warning; POWER; Unretracted Transducer Warning; TRANSDUCER
30 9. WARNING Overvoltage Warning If the supply voltage rises about 20% to over the rated value, theovervoltage detection circuit is actuated. The following warning flick-ers at the center of the screen and an alarm sounds. OVERVOLTAGE! If this occurs, retract the transducer, turn the POWER off and ...
Page 38 - Procedure to Change Menu Settings; Turn off the transmitter with the
32 10. MENU General The CSH-5 MARK-2 employs three menu screens, menu-1 menu-2,and system menu, to preset infrequently used functions. Changing Menu Settings Procedure to Change Menu Settings 1. Turn off the transmitter with the TX key; LED flickers. 2. Press the MENU key. The menu-1 appears. 3. To ...
Page 39 - System Menu; The figure below shows the system menu.
33 Menu-2 The figure below shows menu-2. ** MENU 2 ** EXT KP OFF ON RANGE MARKER 1/4R 1/2R OFF MARK INDI ± 180 ° 360 ° MENU MODE : MENU-1 MENU-2 SYSTEM U N E M G N I N A E M E D O M U N E M . u n e m m e t s y s . 2 - u n e m . l - u n e m : u n e m a s t c e l e S g n i y e K l a n r e T X E e s l ...
Page 41 - Specifications; Numeric Information; Event Mark Data
35 11. INTERFACE MODULE CSH-5060 Specifications The CSH-5060 Interface Module permits connection of external equip-ment (navigational equipment, current indicator, echo sounder, netsonde, gyrocompass, log, etc.) to display various data on the CSH-5MARK-2. 1. Display Mode (a) Normal(b) Normal + Text(...
Page 42 - Operation; Event Mark and Own Ship Mark; EVENT; EVENT; Plotting; When using the target (lock) mode the auto tilt and sector
36 Operation The functions of the Interface Module are accessed from the MENUscreen except the Event mark and North mark*. * —Gyrocompass required. 1. Event Mark and Own Ship Mark Plotting (1) Move the cursor to the location where you want to plot the event mark. (2) Press the EVENT key. The cursor ...
Page 43 - Erasing Weak Noise; Select DELETE COLOR with the RANGE control.
37 TARGET LOCK FUNCTION θ 1 θ 2 D The target lock function allows continuous tracking at a present depth "D". That is, the tilt angle changes automatically from " θ 1" to " θ 2" as the ship approaches the fish. 3. Erasing Weak Noise Unknown weak noise appearing over the entir...
Page 44 - Suppressing Effects of Pitching and Rolling; Operate the trackball to place the trackball mark on the bearing; Note: The entire picture is not compensated in the full-circle scan-
38 4. Suppressing Effects of Pitching and Rolling The Motion Sensor MS-100 (option) compensates for the effects ofpitching and rolling to provide stable sonar pictures. You may enableit as follows: 1. Press the [MENU] key to display the SCAN menu. 2. Use the RANGE control to select RANGE/BEARING. 3....
Page 45 - Note: The starting point may be selected at the outside or inside of
39 5. Detecting Fish Echoes in Specific Area (Fish Alarm) The fish alarm alerts you to fish echoes in an area you select. Anyfish echoes entering the area will trigger the audio alarm. The fishecho level which triggers the alarm may be selected from the scanmenu. 1. Press the [MENU] key to open the ...
Page 46 - Recalling; The gain and range of the sonar picture can not be changed; Exit from Menu Screen
40 6. Fish Alarm On/Off, Fish Alarm Sensitivity The audio alarm for the fish alarm can be enabled/disabled and thefish alarm sensitivity can be selected from the scan menu. 1. Press the [MENU] key to open the SCAN menu. 2. Use the RANGE control to select FISH ALARM. 3. Use the GAIN control to select...
Page 47 - Menu Screen Indications
41 8. Menu Description The CSH-5 MARK-2 employs three menu screens, MENU-1, MENU-2 and SYSTEM Menu, to preset infrequently used functions. Duringnormal operation (transducer lowered, transmitter ON), the SCANMenu appears on the screen. This lets you adjust settings while ob-serving the sonar picture...
Page 48 - SYSTEM MENU
42 MENU-2 ** MENU-2 ** ( RANGE SW : U/D GAIN SW : L/R ) EXT KP SYNC : OFF ON RANGE MARKER : 1/4R 1/2R OFF BEARING SCALE : ON OFF CURRENT MARK : ON OFF COURSE MARK : 10R 5R OFF HEADING INDI : 32-AZI TRUE CURRENT INDI : 32-AZI TRUE ± 180 ° 360 ° EVENT INDI : 32-AZI TRUE ± 180 ° 360 ° MARK INDI : ± 180...
Page 50 - Contents of Menu Items; Item
44 10. Contents of Menu Items This section describes the menu items available with the addition ofthe CSH-5060 and external equipment. MENU-1 (SCAN, E/S Menu) Scan menu Item MENU MODE DISPLAY MODE Contents Selects a menu; MENU-1, MENU-2 or SYSTEM Menu. Selects a picture display mode among the four b...
Page 53 - Indications
47 Indications 1. Normal Mode (NORM) 4 2 5 1 6 6 3 1 2 3 Electronic Bearing Scale Mark Indication (Bearing) Course Mark 4 5 6 Heading Indication Current Mark Own Ship’s Mark
Page 55 - Normal + Echo Sounder
49 3. Echo Sounder Combination Mode (COMBI 1) Normal + Echo Sounder 16 Color Bar SonarPicture EchoSounderPicture
Page 57 - Marks and Data; New Marks and Data
51 Marks and Data This section explains the Marks and Data available from the equip-ment interfaced. Pages 24 to 25 show the location of these Marks andData. The position data of the latest event mark, i.e., horizontal range ( → ), present depth ( ↓ ) and bearing. ( ) shows the latest event mark ori...
Page 58 - Event Mark Position Output
52 Event Mark Position Output Connected to a navigator, the CSH-5 MARK-2 can output event markposition data to external equipment when the [EVENT] key is oper-ated. The data sentence output is "SSTLL" (NMEA, IEC-1162 for-mat).
Page 60 - UNIT DIAGNOSTIC TESTS; To exit from the self-test screen, press the MENU key for a few; Description of Unit-diagnostic Tests; Single Test
54 13. UNIT DIAGNOSTIC TESTS This unit has eight built-in diagnostic tests which check it for properperformance. Although the tests are designed primarily for use by theservice technician, they can also be executed by the user to identifydefective components. However, never attempt to check inside t...
Page 61 - Conti Test; Panel Test; SIO Test
55 Conti Test This is a continuous test of the Display and Transceiver Units. Addi-tionally checked devices are DROM and DRAM. CONTI TEST MAIN 105-0541-XXX 105-0542-XXX ROM = OK RAM = OK P.W = OK DROM = OK DRAM = OK DPRAM = OK TRX 105- ∗∗∗∗ -XXX 105- ∗∗∗∗ -XXX ROM = OK RAM = OK DROM = OK I/F 105-026...
Page 62 - Color Test; The color test checks for proper display of all colors.
56 Color Test The color test checks for proper display of all colors. COLOR TEST PRESS [MENU] 2 or 3 SECONDS TO STOP SELFCHECK 16 Color display WHT RED GRN Echo-1 Test The echo-1 test checks echo processing circuits in the display unit forproper operation. DISPLAY ECHO TEST PRESS [MENU] 2 or 3 SECON...
Page 63 - Gray Test
57 Gray Test The gray test checks for proper display of monochrome charactersand markers. Concentric rings and a monochrome test bar are dis-played. PRESS [MENU] 2 or 3 SECONDS TO STOP SELFCHECK GRAY TEST ............ Echo-2 Test The echo-2 test checks echo processing circuits in the transceiverand ...
Page 64 - Sound Velocity
58 14. CHARACTERISTICS OF THE ULTRASONIC WAVE IN WATER The purpose of this chapter is to provide an overview of the charac-teristics of the ultrasonic wave in water. Sound Velocity It is generally known that an ultrasonic wave travels 1500 meters persecond in sea water, but in practice, some amount ...
Page 65 - Absorption and Attenuation; reflection, refraction and diffusion in water.
59 Research in the waters throughout the world has revealed that there isa difference of approximately 100 m/s between the areas where thevelocity is maximum and minimum Generally, the velocity increases as follows, provided that salinitydensity is constant: • 3 m/s for every 1 degree rise of water ...
Page 66 - Refraction; In other words, the ultrasonic wave refracts toward colder water.
60 Refraction An ultrasonic wave transmitted in water does not travel straight but ismore or less refracted. This refraction is caused by the variation ofpropagation velocity in water. If the velocity decreases (temperaturedecreases) with depth, the top part of the wave front moves fasterthan its bo...
Page 67 - Adverse Effect of Air Bubbles
61 The drawing below shows how temperature variation affects soundpropagation with respect to different emitting directions (tilt angles). Beams tilted five and ten degrees bend upward at 400 m and 600 mpoints respectively. Beams tilted down more than 15 degrees travelin almost straight lines. Betwe...
Page 68 - Reflection at Seabed and Fish School
62 The product of the density (P) and the velocity (C) is called intrinsicacoustic impedance and in the boundary between two media whichhas extremely different C from each other, most of the acoustic poweris reflected and only a small portion penetrates. (In the boundary be-tween water and air, the ...
Page 70 - SPECIFICATIONS; Numeric information; R a n g e s s h o w n f o r o f f - c e n t e r “ o n ” a re m a x i m u m .
SP-1 SPECIFICATIONS 1. Display PPI display on 14" non-glare, high resolution color CRT 2. Display Color 16 colors according to echo strength 3. Numeric information Scanning Data (Range, Tilt angle, Gain) Trackball Mark Data (Slant range, Horizontal range,Depth, Bearing) Range/Bearing Mark Data (...
Page 72 - INDEX
Index-1 INDEX A Absorption 59AGC control 17Air bubbles 61Attenuation 59AUDIO control 21AUTO TILT key 6 C Color test 56Conti test 55Control box panel 5 D Data description 25DEMAG button 3Diagnostics color test 56conti test 55echo-1 test 56echo-2 test 57gray test 57panel test 55single test 54SIO test ...
