Furuno CSH-5L/CSH-8L manual Advanced Sonar Operation, Tracking a Fish School target lock

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3.ADVANCED SONAR OPERATION

3.1Tracking a Fish School (target lock)

Target lock, which requires speed and heading inputs, automatically tracks a fixed location (such as a reef) so that you won’t lose sight of it on the display screen.

1.On the sonar display, operate the trackball to place the trackball mark on the location you want to track.

2.Press the [TARGET LOCK] key.

The target lock mark appears () on the echo selected and the bearing mark bisects the echo. Horizontal range, depth and bearing to the target appear at the bottom right hand corner of the sonar display. Note that target lock is automatically cancelled when the echo moves 1.5 times the range in use.

Target Lock Mark

Target lock bearing mark

Target Lock Data

650 (Horizontal range from own ship to target)

153 (Depth of target)

BNNE (Relative bearing to target*)

* Relative bearing format may be selected with OTHER MARKS on the MARKS menu.

**Any value which exceeds 9999 is displayed with four asterisks (****).

Target lock mark and target lock data

3.To cancel target lock and erase the target lock mark and bearing mark, press the [TARGET LOCK] key again.

Note 1: If automatic tilt is active it is automatically cancelled. It is resumed once target lock is disabled.

Note 2: Target lock feature is cancelled when the position selected is more than 1.5 times the range.

3-1

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Contents Color Scanning Sonar 00080940402 Safety Instructions Turn off the hull unit before using the hand crank Table of Contents Marks and Data Index Foreword FeaturesWord to the Owner of the CSH-5L/CSH-8L System configuration of CSH-5L System ConfigurationVii Viii System configuration of CSH-8LControl Unit Operational OverviewControl unit Remote controller Remote Controller optionTurning on the power Basic Operating ProcedureLowering the transducer Sonar menu TransmittingSystem menu Adjusting backlighting of control unitMode description Description Display Choosing a display modeNorm COMBI-1Sonar display Normal mode display sonar displayCOMBI-1 display sonar display + audio display COMBI-1 display sonar display + audio displayCOMBI-2 display sonar display + echosounder display Choosing the display rangeCOMBI-2 display sonar display + echosounder display Detection rangeRetracting the transducer, turning off the power Adjusting the gainExamples of proper and improper gain Automatic tilt on/off Setting the Tilt AngleTilt range Range m ±2-10 ±4-14 ±6-20 ±10-26 Range and tilt angleAuto tilt concept Bottom and tilt angle How to discriminate fish echoes from the bottomCase 1 Tilt angle 30 to 40 degrees Case 2 Tilt angle 10 to 20 degreesTilt angle for surface fish Points to considerTilt angle and surface fish example CSH-5L Suitable tilt angle Finding Range and Bearing to a TargetDepth, detection range and tilt angle Location of trackball dataSonar Menu Overview Operating procedureDescription of sonar menu Sonar menu descriptionDescription Ref. Description of sonar menu con’t from previous This page intentionally left blank Eliminating Unwanted Echoes Fine Tuning the Sonar PictureHow TVG works Suppressing Bottom Tail Displaying Surface Fish Clearly1 AGC 3 2ND AGC Pulse lengthHow to adjust TX output Identifying noise source Rejecting Sonar Interference and NoiseRejecting noise with the interference rejector Rejecting noise with the noise limiterInterference rings Rejecting interference with TX cycleDeleting Weak Echoes Choosing BeamwidthEcho Averaging Horizontal beamwidthThis page intentionally left blank Tracking a Fish School target lock Advanced Sonar OperationTarget lock mark and target lock data Target lock and tilt angle Detecting Fish Schools Aurally Fish alarm zone Fish AlarmFish alarm zones Entering a fish mark Measuring Fish School SpeedFish mark and fish mark data Relocating Fish School for Easy Observation How to use the off-center functionDeleting individual fish marks Event Mark, Own Ship Position Mark How to use the event markEvent mark Entering an event markDeleting an event mark Entering an own ship position markEvent marks Track Collectively Deleting MarksShip Operating the function keys Function Keys F1-F4Programming for fishing ground or target fish Erase Marks dialog boxUseful programs main items only Programming specific functionTX Output Pulse Length TX Cycle TVG Near TVG FAR HOR Beamwidth Color Curve ResponseFunction key assignment confirmation screen Confirming function key programHow the stabilizer works Suppressing Effects of Pitching and Rolling StabilizerStabilizer mark Advanced Sonar Operation Choosing the Range Echosounder ModeDisplay range and shift concept Sounder menu Adjusting the GainMeasuring Depth Picture Advance SpeedMeasuring depth Suppressing Low Level Noise Suppressing InterferenceInterference ClutterWeak echoes Erasing Weak EchoesSounder menu description Other Items on the Sounder MenuCurve DraftMarks and Data on the Normal Display Marks and DataMarks and data on the normal display Points to North Heading Mark Description of marks and data on the normal displayMarks and Data Press the R/B key. Own ship position and trackball mark are Marks and data on the echosounder and audio displays Marks and Data on the Echosounder and Audio DisplaysOn the System menu Bottom Echo Interpreting the DisplayBottom echoes Fish echoes Fish SchoolWake Sea Surface ReflectionsSea surface reflections WakeNoise and Interference False Echo by SidelobeSidelobe echo Noise and interferenceMarks Menu Marks and System MenusMarks menu Marks menu description System menu Description of System menu System MenuDimmer Disp SelectDescription of System menu con’t from previous General Maintenance MAINTENANCE, TroubleshootingCleaning the Equipment Hull unit maintenance points Hull Unit MaintenanceLubrication points, zinc plate Hull unit Manually raising the transducerHand crank Fan Replacement Fuse ReplacementUnit Fuse Type Code No Type Code NoSymptom Check, Remedy TroubleshootingMessage Meaning, Remedy Overvoltage Error MessagesTransducer not retracted High speedChoosing a diagnostic test Diagnostic TestsSingle test, Continuous test Description of diagnostic testsContinuous test example CSH-5L, 55 kHz transducer Panel test Panel testWhite RED Green Blue Color testColor test Pattern testSIO test SIO testEcho tests Echo testsSpecifications of Color Scanning Sonar CSH-5L/8L Hull Unit Interface This page is intentionally left blank Sonar menu Menu TreeSounder menu AP-1System menu Marks menuAP-2 IN-1 Index

CSH-5L/CSH-8L specifications

Furuno CSH-5L and CSH-8L are advanced marine radar systems known for their cutting-edge technology and user-friendly interfaces. Designed primarily for maritime applications, these radar units cater to a wide range of vessels, from commercial ships to fishing boats. The primary distinguishing feature of the CSH-5L and CSH-8L radar systems lies in their ability to provide high-resolution images and precise detection of targets, ensuring navigational safety and operational efficiency on the water.

One of the standout technologies incorporated into both models is the pulse compression technique. This feature significantly enhances target resolution and minimizes blind spots, allowing the radar to detect smaller objects at greater distances. With the CSH-5L and CSH-8L's powerful signal processing capabilities, users can expect exceptional performance even in challenging weather conditions, ensuring reliable operation during storms or fog.

The CSH-5L model operates at a frequency range of 5 GHz, while the CSH-8L uses an 8 GHz frequency. Both radars are equipped with a rotating antenna that provides a wide coverage range, allowing for efficient monitoring of the surrounding marine environment. Their high sensitivity and low noise levels enhance target detection, making them particularly useful for locating small fishing vessels or buoys.

Another important characteristic of the Furuno CSH-5L and CSH-8L is their user-friendly interfaces. Both models feature intuitive controls, allowing operators to adjust settings easily and access critical information quickly. The displays are designed for clarity, enabling users to distinguish between targets and navigate effectively.

Additionally, the radar systems include advanced features such as automatic target tracking and target acquisition capabilities. This functionality allows users to monitor multiple targets simultaneously, providing essential situational awareness for safe navigation. The CSH-5L and CSH-8L also support integration with other onboard systems, including ECDIS (Electronic Chart Display and Information System), which enhances the overall effectiveness of maritime navigation.

In summary, the Furuno CSH-5L and CSH-8L radar systems represent the forefront of marine radar technology, offering exceptional detection capabilities, user-friendly controls, and robust integration options. Their advanced features ensure that mariners can navigate confidently, making them a vital asset for anyone operating in the marine environment.
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